Make control over gsm channel. GSM module for remote control. Unit control options

At present, a lot of all sorts of devices controlled by the GSM (Global System for Mobile Communication) standard are already being produced industrially - a digital standard for mobile communications or a mobile phone that is now familiar to everyone. These are various control cabinets for industrial equipment, or even just individual sockets, as shown in Figure 1.

The design looks like a regular adapter that plugs into a wall outlet. The load can be switched on by calling or sending sms via mobile phone. Manual control is also possible using two buttons located on the front panel. The power switched by such sockets, depending on the model, is in the range of 1 - 5 kW, which allows you to turn on almost any load.

Multi-channel sockets are also produced, like a computer “bast shoes”, which allow you to independently control the operation of several loads. Such devices are one of the, and therefore, their price is quite high: if you search on the Internet, then prices range from 1000 to 3500 or more rubles.

Picture 1. Remote module sms management

For example, a socket with a remote control via sms (can be controlled by 5 users) with a built-in temperature sensor. With the help of a sensor, the socket can automatically turn off and turn off household appliances in accordance with the ambient temperature:

Figure 2. Socket outlet with remote control sms

Even more expensive than individual sockets are industrial modules. As an example, Figure 2 shows an offer from an online store for the sale of a DTMF control module.

Figure 3

It was from this drawing that the abbreviation DTMF, which is still incomprehensible, appeared on the surface. Let's see what it is below.

DTMF signals

In old phones, dialing was done by rotating the disk: the dialer spring was wound up with a finger for the required number of digits, the disk was spinning back, closing the contact, and clicks were heard in the handset. Such a set was called impulse. Pulse dialing was also used in modern push-button telephones.

Currently, the so-called tone dialing is used. Try to dial a number on a landline phone - sounds of different tonalities are heard in the handset. It listens to DTMF signals, - Dual-Tone Multi-Frequency, - two-tone multi-frequency signal. Figure 4 shows a table that forms the numbers and some characters transmitted when dialing a number.

Figure 4

For example, the number "1" corresponds to a combination of frequencies 697 and 1209 Hz, and the number "9" corresponds to 852 and 1477 Hz. Frequencies are chosen in such a way that when transmitted together, they do not form harmonics. To decrypt tonal bursts, there are specialized microcircuits - decoders, for example IL9270N, HM9270, MT8870. They are just different companies. They may even differ in the number of pins, or, as now in a foreign manner, pins (from the English pin), but they perform the same functions.

In addition to these specialized decoders, DTMF signals can be decoded on digital computers using the Herzel algorithm. Naturally, these signals can also be decoded using microcontrollers or, as they are sometimes called, embedded computers.

In addition to dialing a DTMF telephone number, the technology is widely used in smart home systems, alarm and burglar alarms. DTMF tags are also used in commercial broadcasting.

The DTMF system was developed back in 1961, but reached Russia only in the nineties of the last century. At first, tone dialing was provided as a paid service, and even then not everywhere, since tone dialing is possible only at modern digital telephone exchanges. In general, antediluvian relay stations are still in operation in many places, which allow you to use only pulse dialing.

And now, try to do this experiment: call on a cell phone, well, at least to your work colleague, because you are in the same room all day. After he picks up the phone, press any numbers on your phone: DTMF signals will be heard in the speaker of his phone in the form of short musical sounds. (According to the laws of physics, sounds that have a certain frequency are called musical). For example, the noise on the street cannot be considered a musical sound.

The same sounds are also present in the speaker of the telephone headset: the matter is small - just plug the DTMF decoder into the headset jack and here you are, the finished control device. In some cases, the number of managed loads is just one, and it is required to turn it on or off at any time.

Homemade remote devicestelephone control

A few words about the operation of the scheme. The basis of the device is a polarized relay. As can be seen from the diagram, it has two coils connected in such a way that when voltage is applied to one coil, the relay armature is attracted to one core, and remains in this position even if there is no longer voltage on the coil - there is a magnet inside the relay.

In order to snap the armature into the opposite position, it is required to apply voltage, at least a pulse of sufficient duration and amplitude, to another coil. The armature will remain in the attracted state, even when the supply voltage is removed. Isn't it very reminiscent?

The device is powered from the mains, through a half-wave rectifier D1, R1, R2, C1. Capacitor C1 produces a voltage of about 24V. Of course, this is done in violation of all safety rules, but the author assures that if you don’t get too impudent and don’t go where you don’t need to, then ... Well, in general, everything will work out!

The phone must have a vibrating alert: it is to its contacts that the optocoupler relay IC1 will be connected, in the diagram it is the resistor R4 and the output of the optocoupler 1. The polarity of the connection is indicated in the figure. When connected to the phone, the polarity of the voltage on the vibrating alert should be checked using a multimeter or an LED with a resistor.

When the vibration is triggered, the output transistor opens inside the optocoupler (pins 5 and 6). Capacitor C4 is charged from the power supply through the right winding of the relay and the open transistor of the optocoupler. The armature of the relay switches to the left coil, and with contact K1.2 it turns on, and with contact K1.1 it prepares the left coil for the next switching.

Capacitor C4 is discharged through resistor R3 for about five minutes, during which time the status of the device will not be changed from the phone. With all the obvious simplicity, the device has one significant drawback: the ability to get an exotic polarized relay, and even the right passport, is now practically zero. Even the author of the scheme himself writes about this in his description.

Another simple control device is shown in Figure 5.

Figure 5.

Made on a specialized chip - signal decoder DTMFMT8870. The purpose of this device in the author's performance is to remotely turn on and restart the computer. The device works as follows. After you have called this number, dial 1 or 2 after picking up the handset, which corresponds to turning on the computer "POWER" or rebooting "RESET".

The circuit is powered directly from the cell phone, the output transistors of the optocouplers are connected in parallel with the corresponding computer buttons. PC817 optocouplers are widely used in switching power supplies, from computers to mobile phone chargers.

The device is connected to the headset jack, to the speaker outputs, on which, as described above, DTMF signals appear. The main problem with this scheme, when repeated, is that the phone, when a headset is connected, must auto-pick up the handset. But not all phones have this option.

Figure 6.

The circuit is implemented in hardware, i.e. does not contain microcontrollers that require software, all the logic of operation is achieved through the circuit itself.

The phone call is received by a microphone, amplified to the desired level by an amplifier, as a result of which a relay is activated, the contacts of which are connected to the "Answer" button (hook up). After this relay trips, a time delay of about 7 seconds starts. If during this time you have time to press the necessary keys, then the DTMF signal will be sent to the DA1 decoder, the output signals of which through the DD3 decoder through the relay can connect - disconnect up to 12 loads.

After 7 seconds, the “Hang up” relay will work (its contacts are connected to the “hang up” button), for subsequent control, one more call will be required. Thus, it turns out that the phone will simply be wrapped with wires: wires from the relay to the buttons, and even the DTMF signal output from the headset jack.

A simpler scheme, meaning by the number of parts, is shown in Figure 7.

Figure 7. Scheme of the load control device by phone (click on the picture to enlarge)

This is where the phone with auto-hookup is used with a headset connected, so you don’t need to solder to the buttons, you just need to connect the headset jack. This circuit provides control of 8 loads, the control commands are shown in the description of the circuit.

But these schemes are not at all those that were called the most complex and serious at the beginning of the article. There are those who use an embedded SIM300D GSM module instead of an old cell phone. Its price is 4200 rubles, although it has already been discontinued. It is in this module that the SIM card is inserted.

For more information on how to independently assemble and program a remote control device in the author's development, read here:

Step-by-step instructions on how to independently assemble and configure a load control device on a mobile phone -

GSM CONTROL AND MONITORING DEVICE

This device is designed for various control and monitoring functions using the GSM channel. For example, it can be used to control various loads, as a security system, temperature measurement in controlled areas, etc.

Functionally, the device consists of a microcontroller, a signal decoder DTMF, built-in GSM module SIM300D, pulse power supply(4.3V / 2A) and electromagnetic relays for load control.

There are 4 channels for controlling loads up to 2 kW (230V / 10A), five inputs that can be programmed for various functions. It is possible to connect a backup power source, for example, a battery Casil 1270. Four LEDs, which are placed directly on the printed circuit board, are designed to control the activity of the SIM300D module, the presence of a cellular network, the programming and connection mode, and the identification of a DTMF signal.

The option of connecting various loads and sensors to the control and monitoring device is shown in fig. one

Rice. one

The schematic diagram of the device can be downloaded from the link at the end of this article. The basis of the device is a microcontroller 16F876A. This controller has a built-in hardware USART, through which the GSM SIM300D module is controlled. The microcontroller has an external quartz resonator with a frequency of 4 MHz. The R9C5 circuit is designed to reset the microcontroller at the initial power-up moment. Transistor switches (and, accordingly, relays) are controlled through port B0-B3. The inputs of the device are implemented through the port A0-A3.

According to port pins C0-C4 a four-bit code is received from the DTMF decoder MT8870. The four-digit code is directly transmitted along lines C0-C3, and a strobe pulse is transmitted along line C4. It appears on the STD output of the decoder at the moment the DTMF signal is recognized. The identification duration is set by the R4C4 MT8870 circuit. Frequency clocking is carried out by an external quartz resonator with a frequency of 3.5795 MHz. The input signal is applied to pin 2 from the SIM300D module through the isolating circuit R1C3. Through the capacitor C12 from the output 28 of the microcontroller, the confirmation signals of the executed commands are sent to the microphone input of the GSM SIM300D module. Through pin 16 and key VT5, the GSM module is launched. The Program button is designed to enter the service functions programming mode (password, number of calls, etc.)

GSM module SIM300D included as standard. Zener diodes VD13-VD16 protect the SIM card inputs. The VD10 LED through the VT7 transistor key indicates the state of the GSM network, and VD11, controlled by the VT6 key, indicates the status of the SIM300D module.

Considering that all elements of the device - the DTMF decoder, the microcontroller and the SIM300D module are powered from the same power source, no matching elements are required. The only point is the decoupling of the USART module of the microcontroller from the SIM300D using two resistors R18 and R19.

The power supply is built according to a combined scheme - first, the input DC voltage is stabilized at 15V using a microcircuit LM7815. The R5R6 circuit is a divider that controls the presence of input voltage through pin 7 of the microcontroller. Diodes VD2 and VD4 do not allow additional discharge of the backup battery (which is connected in parallel with capacitor C6) through the stabilizer LM7815 and in addition, limit the voltage level to 13.2V. which is designed to power electromagnetic relays. Next, the voltage is supplied to a switching stabilizer built on a microcircuit LM2576. This microcircuit is an adjustable switching regulator, the value of the output voltage depends on the ratio of the resistances R21 and R22.

The entire logic of work is controlled by a program whose code is hardwired into the microcontroller. The functionality of the device can be changed by the corresponding firmware versions. Circuitry for new versions has changed slightly. Links to descriptions of each subsequent version are provided at the end of this page.

Description of version 1.0.

Control mode.

Dial the number of the SIM card installed in the device from a cellular or landline phone operating in tone dialing mode. After passing the programmed number of calls, a two-way connection will be established, the control LED will light up and the user must enter a four-digit password. If the password is entered incorrectly, the connection is terminated. If the input is correct, the user enters the load management mode. Buttons 1-4 select the appropriate load channel. Then, by pressing the “*” symbol, the selected load is turned on. To turn off, the desired channel is again selected and the “#” symbol is pressed. When channel 5 is selected, all loads are controlled simultaneously. After finishing work, you must double-click the "#" symbol. The connection is terminated and the device returns to its original state. After the connection is established, if the time interval between the issuance of DTMF commands by the user exceeds 1 minute, the connection is automatically disconnected and the device returns to its original state.

Programming mode.

Dial the number of the SIM card installed in the device from a cellular or landline phone operating in tone dialing mode. After passing the programmed number of calls, a two-way connection will be established and the control LED will light up. Enter the previously set password. If the password is entered incorrectly, the connection will be disconnected. If the password is entered correctly, the device enters the load control mode. To enter the programming mode from this mode, you must press and hold the PROG button for at least 3 seconds. After the LED flashes three times, release the button and enter a new four-digit password from the phone keypad. The entry of each digit is confirmed by a beep. The fifth digit determines the number of calls before "auto pickup" - i.e. device activation. After entering the number of calls, the device exits the programming mode and the connection is terminated.

By default, in the microcontroller firmware version 1.0, the service password is programmed - 1234, the number of calls is 3

Sound signaling of executed commands:

Programming Entry Confirmation - High Frequency Double Tone

Password prompt - high frequency triple tone

Password Verification - Triple High Tone

Password Invalid - Low Frequency Triple Tone

Correct channel selection (1-5) - high frequency single tone

Wrong channel selection - single low frequency tone

Load on - high frequency double tone

Load disconnected - low frequency double tone

End of work - low frequency triple tone

ATTENTION!Read about all the improvements and new versions of the GSM control and monitoring device here:

Final version. Added audio control mode and impulse load control.

New design of the device. Ability to work with any firmware 1.0 - 1.7.

Allows you to control the presence of voltage on the loads and manual control mode.

The possibilities of devices for remote control of heating every year (what's there every year - almost every month!) are becoming more and more perfect. Smartphone app developers try to make them easy to use and easy to understand even for untrained people. Briefly, we list only the main features of such systems that support:

• normal operation, when the set temperature is maintained throughout the house;
• zonal mode, when different rooms can have individual temperatures;
• prevention of defrosting of the heating system (freezing of pipes) in the cold season, when you are away from your country house or cottage;
• the possibility of early switching on the boiler, for example, you need to warm up a country house when you are going to visit it on weekends or holidays;
• always be aware of the operation of your autonomous heating and, if necessary, carry out its diagnostics;
• a temporary mode in which at different times during the day the house can maintain its own thermal regime with a significant reduction in material costs for fuel, for example, you can set the boiler to low power (respectively, to low fuel consumption), going to work or on business, and turn on normal mode before returning.

Remote heating control means that any of these modes, as well as specific room temperatures, are changed using mobile communications, or heating is controlled via the Internet.
This approach is part of the ideology of creating a “smart home”, which entails the further development of all engineering systems at home in order to ensure ease of use and create the most comfortable living conditions.

Which heating system can be controlled remotely?

In country houses and cottages, two-pipe systems with forced circulation of the coolant are currently most often used: the circulation pump pumps the coolant through the entire heating system, which, thanks to the distributor comb, can be supplied to each heater.
In such systems, as a rule, a safety block of the heating system is used to protect it from destruction in unforeseen situations, for example, in the event of an increase in pressure beyond the allowable one.
It is also necessary to have additional equipment to control the operation of the heating system: sensors, special valves and devices for adjusting the coolant flow, and it is also necessary to combine various devices into an information network

Weather-compensated heating control

To date, it is considered the most promising. In such systems, in addition to the room temperature sensor, an external air temperature meter is also used. In principle, a weather-dependent heating controller will work with one external sensor, but using two allows you to achieve more accurate mode maintenance and even implement self-adaptation of the system to specific temperature changes: if it gets colder outside, then the temperature of the coolant in the system rises in advance, if it is warmer - then decreases in advance. In addition to saving fuel, this reduces the inertia of the system, which increases its efficiency and also provides additional cost savings. One of the basic points of the weather-dependent heating control can use a temperature of plus twenty degrees - with it, the temperature of the coolant is taken equal to the ambient temperature, while the heating is actually turned off. It is also necessary to take into account the zonal temperature control, i.e. if, for example, a large number of people gathered in one of the rooms, due to which it became hotter, the system detects a local increase in temperature relative to that set by the weather heating controller, and makes a correction in this zone.
In general, serious battles flared up on the Internet about - is it worth using weather-dependent automation at all or is it money thrown to the wind? In short, the opinion of our specialists, confirmed, by the way, by the reviews of numerous customers, is unambiguous - yes, it is worth it, but not in all cases. And in what? Answer

Types of remote control heating systems

Currently, two systems are used for remote control of heating:

• using a set of equipment with an Internet gateway. The presence of a Wi-Fi router and the Internet in this case is mandatory.
• using a GSM heating control module. Requires a special GSM module with a SIM card from a mobile operator.

Remote control of the boiler room using mobile GSM

But what if there is no wired Internet in a country house? How can the heating be controlled in this case?

Yes, it's very simple - with the help of a special GSM module and, of course, a mobile phone. In fact, the GSM module acts as your personal assistant - you called him, gave him a command, for example, to pre-heat hotter by a certain time - and the whole family will come to a warm and comfortable house. Or vice versa, if you forgot in the morning, leaving for work, to reduce the power of the boiler is not a question, you can do it right from work, via the Internet or directly from your smartphone, while you are still getting to work.
The GSM module is a compact device with its own SIM card of any operator (it is important that it provides reliable signal reception in the area), which allows you to control the indoor climate from any phone (satellite, mobile or fixed line), tablet or PC.

The undisputed leader in the market of GSM thermostats is currently the Russian company MicroLine. The company produces a wide range of GSM modules for remote control of heating boilers, including multifunctional controllers that provide control of the most complex heating systems.
You can buy in the appropriate section on our website GSM heating control

Depending on the settings you have made, your phone will either receive short SMS notifications with various information and instructions for changing the heating boiler settings, or you will receive phone calls with various information about the operation of the heating system. A special mobile application is installed on the phone (there are versions for Android, iOs, and Windows Phone), which allows you to directly remotely control almost all parameters of the heating boiler.
The GSM heating control module is essentially a computer docked with external sensors and having the ability to change the operating modes of the heating system. Naturally, the module must be in the zone of reliable reception of mobile operators.

GSM heating control module can operate in several modes:

• automatic, when, based on signals from installed sensors, the controller maintains the specified modes according to the specified program;
• SMS heating control when the heating system is controlled by sending SMS. In this case, when new data arrives, for example, about the temperature in the room, the controller accepts them for execution and begins to automatically support them;
• warning, by sending alarm messages about the current state of the house (gas leak, break in the water supply system, etc.);
• remote control of other devices connected to the GSM module (watering, lighting, alarm, etc.).

GSM - heating control allows you to remotely:

• receive indoor temperature reports;
• receive notifications about the current state of heating equipment;
• change the operating mode of the system by raising or lowering the temperature, including separately in each room.

Heating control is not limited to these functions. In principle, any heating system can be turned into a remote one. To do this, it must have an automatic mode of operation, and a special GSM controller must be connected to it to control heating and communicate with the subscriber.

Is this not enough for you? Then look at the possibilities of multifunctional GSM controllers, for example: ZONT H-1000 or ZONT H-2000 The devices are complex, require professional knowledge during installation and configuration, so only highly qualified specialists are required for installation - contact our company, we have them!

Remote control of the boiler using a set of equipment with an Internet gateway

Now consider the option of remote control of heating, if the country house or cottage has the Internet and, of course, a Wi-Fi router (aka a router).
Everything is much simpler here - you can see the capabilities of the devices proposed below and forever forget about worries about the state of the heating system in your home.

Salus IT500 provides control and adjustment of operation parameters in a maximum of two heating zones, for example, in the 1st room on the first floor of the cottage and the shower room on the second floor.
The kit includes an actuator (boiler receiver), a 2-channel room thermostat (weekly boiler programmer, boiler control panel) and an Internet gateway connected to an Internet router (router).

Possibilities of controlling the heating system using a set of equipment with the Salus iT500 Internet gateway:

• control of heating only modes (boiler and, if necessary, pump);
• management of several heating zones;
• management of heating and hot water supply of a country house.
• maintenance of different temperatures in different rooms, schedule of temperature regimes by days, hours and minutes
• 6 preset heating modes on delivery
• hot water heating control, automatic control modes, including energy-saving and "holiday" mode.
• a unique system for connecting devices via the Internet, providing reliable connection and control of the heating system: smartphone (or personal computer) -> Internet server -> router (router) -> thermostat -> receiver -> boiler

All equipment is wireless and communicates with each other via a radio channel, i.e. no need for electrical wiring. The room thermostat for the heating boiler is programmed for daily, weekly or 5+2 operating modes. The thermostat screen and applications for remote heating control display the current state of the boiler, the current temperature and the set temperature. Schedule setting can be done from the thermostat panel, web browser or mobile app.
The thermostat has a modern design, is highly reliable and safe to use.
With the use of additional equipment Salus Controls, it is possible to control, including remote control, underfloor heating, gas and electric boilers, oil heating systems, as well as almost any other heating systems and devices.
Remote control does not require a dedicated external IP address, the whole system works perfectly on any mobile Internet (Yota, Megafon, Beeline, etc.), it is also possible to control from computers and mobile devices on Android and iOS operating systems.

What to do if there is no wired Internet in the house, and a Wi-Fi Internet thermostat has already been purchased?

Most likely in the country there is coverage of mobile operators, isn't it? So you have internet! Just buy a Wi-Fi router with a USB port and in addition to it a 3G or 4G modem. Install a SIM card of any mobile operator in the modem that provides a reliable signal in the area where your home is located. You insert the modem itself into the USB connector of the router and that's it - now you have the opportunity to control the heating of the dacha remotely!

If for someone the iT500 seems expensive, the company offers a more budget solution - an internet thermostat Salus RT310i
The thermostat has somewhat reduced capabilities compared to its "big brother", but it can be a worthy replacement due to the lower price of the kit. Externally, the RT310i looks more modest compared to the first-class high-tech design of the iT500, it lacks touch controls, but the models are almost identical in functionality. Except that while the iT 500 is capable of controlling 2 heating or cooling zones, the RT310i can only control one zone.

Missing the features of the iT500? No problem - Salus iT600 can do it all and more!

If you do not have enough iT500 functionality to control only two heating zones, then on our website a more functional one is presented multizone(there are wired and wireless versions) system Salus iT 600 Smart Home. Well, something, and its capabilities for remote control of heating (and not only!) Will be enough even for the most demanding consumer!

iT 600 Smart Home combines the ability to control underfloor heating, remote control of heating using thermostats, single switching at the “smart home system” level, temperature change in each room using a smartphone with Internet access, control and management of any electrical appliances in house, connecting sensors for opening windows and doors, and many other functionalities. The system was far ahead of not only its competitors in the field of remote heating control, but also set the trend in the field of automation and dispatching of engineering systems for many years to come!

For more information about the capabilities of the system, see the article:
Smart House. Heating control system SALUS iT600

Attention! The new line of Salus iT600 Smart Home products is already on sale!

Now you can not only remotely control heating, but also protect your home and control electrical appliances!

Now you have the opportunity buy Salus iT600 Smart Home- a new line of automation for the Smart Home!

This is the same complete system for remote control of heating via the Internet. iT600 plus additional features:

• using a universal internet gateway The Smart Home UGE600, which now supports up to 100 ZigBee wireless devices, replaces last year's Salus G30 gateway.
• control and management of various electrical appliances connected to Salus SPE600 smart sockets with the ability to account for consumed electricity
• connection and control of the security alarm using wireless sensors for opening doors or windows Salus OS600 Door Sensor
• managing your system just got easier, thanks to the new Salus Smart Home app for iOS and Android smartphones, whose interface and device registration have become much simpler and clearer!

All system components are wireless devices operating in the modern ZigBee home network standard, now you can create separate groups of devices that work in one bundle and which can be assigned individual tasks.

In the future, the company's engineers intend to expand the capabilities of the smart home control system, but now you can buy Salus iT600 Smart Home, starting with the essentials, and build your Smart Home at a very attractive price!

And what about the owners of outdated heating systems?

Tech WiFi 8S can control the temperature in 8 rooms, each of which can have up to 6 thermal actuators!
In addition to controlling thermoelectric actuators, the controller can also control the boiler: when the set temperature is reached in all rooms, it will turn off the boiler using a “dry contact”.
Buy heating control system TECH WiFi-8S

Remote control of complex heating systems

The Polish company Tech Controllers, which produces a wide range of controllers with the possibility of remote control, is gaining an increasing share in this market segment.
By themselves, Tech controllers are multifunctional devices that are the main, basic part of the system, which can remotely control heating systems of almost any complexity using additional modules. There are a lot of possibilities, therefore, using an example, we will consider only the possibilities for remote control.

Tech Controllers Hardware Installation Example

In the photo for installation used:
1. Controller Tech ST-409n- a multifunctional device designed to control the central heating system, providing:
interaction with three wired room regulators
interaction with a wireless room thermostat
smooth control of three mixing valves
DHW pump control
return temperature protection
weather control and weekly programming
the ability to connect the ST-65 GSM module for remote control of heating from a GSM smartphone
the ability to connect the ST-505 module, which allows remote control of the boiler via the Internet.
Possibility to control two auxiliary valves with additional modules ST-61v4 or ST-431 N
Ability to control additional equipment, such as garage doors, lighting or sprinkler, etc.

Various Tech modules can be used for remote control, it all depends on the specific needs of the owner. For example:

What if the heating system is so individual that none of the above solutions can fully meet the needs of its owner to manage it?
There are no hopeless situations! Most often, the customer himself simply does not understand (and should not!) All the possibilities of modern remote control systems for heating. It is really difficult for an unprepared person to understand all this abundance of devices offered on the market, which are completely different from each other in terms of functionality, price, and, of course, quality. Yes, and installers, often, simply do not have an idea about the possibilities for controlling heating systems - their task is to mount the system, but how often you will run around the house (or to the boiler room) and turn various valves to ensure constant thermal comfort, they do not care . Our specialists more than once had to almost completely remake the "creations" of such craftsmen, and this, believe me, costs a lot of money. A miser pays twice... Contact us, we will consult for free, and if necessary, we will install a remote control system for heating, we will help with the selection of high-quality equipment at an affordable price.

The specialists of the company "Termogorod" Moscow will help you choose the right one, buy as well as install a remote heating control system, find an affordable solution. Feel free to ask any questions you may have, telephone consultation is absolutely free!
You will be satisfied cooperating with us!

The GSM-module allows you to remotely control any automation, receiving a signal from a telephone operating in the GSM range, and turning on / off the connected equipment. It is used to open swing and sliding gates, barriers in parking lots, parking lots, summer cottages and garage cooperatives, private houses, remote control of engineering systems for irrigation, lighting, heating, rebooting servers and routers.

This is how the owner opens the gate at the entrance to the territory

The GSM-module is most widely used as a reliable and low-cost controller for managing group access to an object, compatible with the popular automation of gates and barriers Doorhan and Came.

How the module works

In essence, a GSM module is a radio receiver with an installed sim card of any mobile operator and a controller for processing incoming and outgoing information. The module database contains the phone numbers of all users who have the right to access the closed area. Modern models support recording and storing up to 2000 numbers, more expensive modifications can process up to 10,000 numbers.

The principle of operation of the device is shown in the figure.

Schematic diagram of the device

When making a call, the controller checks the incoming number with the recorded data, and if it is in the memory, a command is given to open and actuate the barrier and sliding gate drive. If the number is not in the list, then the device simply hangs up the call without doing anything else. Similarly, the controller opens swing gates equipped with an electric lock and a Doorhan or Came drive.

There is no connection with the caller, or it is disconnected after a few seconds, due to which the cost of paying for cellular services is zero. If the data does not match, then the pass through the enclosing device is not provided. In some models, it is possible to disable identification, and the pass is carried out with any incoming call to the controller. The GSM module control unit is configured using SMS commands, a web interface, a program on a computer connected via a USB port, and an android application for smartphones.

Let's give an example of a gsm-module from Tor-House LLC. There are two models that differ in the number of user numbers and the set of functions. Photo modules in the figure below.

The technical characteristics of the modules are given in the table.

Pros and cons of gsm modules

• there is no need to purchase individual remote controls, key fobs or cards, and not all barrier control systems are “rubber” and are designed for a limited number of them;
• you can open a barrier or gate from any place included in the coverage network of a mobile operator, thanks to which it is not a problem to provide a pass for a friend to the territory, being out of reach - not a problem, + simplifying the work of the security service;
• control - using software or SMS commands, it is possible to add and remove numbers from the database, configure parameters such as admission by day of the week, time of day, entry ban in case of non-payment of mandatory fees, keeping a log of entries, etc .;
• the ability to install on automatic barriers and gates of any manufacturer;
• savings - the price of one gsm controller is approximately equal to the cost of three Came remotes, and with a large number of users, such automation of travel is much more profitable.

And a small fly in the ointment in a barrel of honey - it will be impossible to open a gate or a barrier with a dead phone battery or a zero balance, whether they are Doorhan or Came three times, but the same thing can happen if you, for example, have forgotten or lost the remote control.

Characteristics of popular models

Teltonika

A simple module that provides services to up to 500 clients. It is installed on swing gates, used to control barriers, sliding gates and other devices with electric drive.

Teltonika VRT012

Compatible with Doorhan automation, operating voltage - 12 V, equipped with a power supply for connection to a 220 V network. Works stably from -20 to + 40 ° C. The client list is set up via SMS or via a computer application.

doorhan

The controller stores up to 500 numbers in the database. Designed for installation both directly into the body of sliding gates and barriers with Doorhan automation, and outside. Operates at a temperature of -20 to +40°С, has its own housing for protection against external influences. Power supply 12-24 V.

Doorhan module

Parameters are configured by SMS commands or via a computer. The Doorhan module is compatible with other manufacturers' automations, there are only a small number of actuators that require additional adaptation. To find out about the possibility of installation, contact the specialists of the organization-seller.

ESIM 110/120

Provides access to the territory for up to 500 clients, an additional option - expansion up to 2000. In the improved version - ESIM 120, cloud management technology is implemented through the WEB interface and from a mobile application.

ESIM120 ELDES — GSM controller for opening gates and access doors

The controller is compatible with Doorhan sliding gate automation, is compact and can be built inside the drive system unit. Convenient logging, where you can set various parameters for entry permits individually for each client and see who and when drove in - a memory for 1000 events. Operating voltage 10-24 V, temperature range from -20 to +55°С.

Places of application

The modules are used to control any type of equipment with an electric drive:

• automatic gates, barriers;
• boilers;
• office doors (if there is an electric lock);
• alarms;
• cars;
• and other devices.

We are already familiar with devices such as GSM / MMS cameras (), GSM alarms () that send messages when a motion sensor is activated. These were the first devices using GSM-modules and their use began to expand.

GSM-modules are being actively implemented, they showed the greatest efficiency for control at the entrances to cottage settlements, large residential complexes, commercial facilities with a large number of staff or customers.

Let's say there are 5 houses in the residential complex "Berezka", 500 apartments are multiplied by 1500 rubles. (average key price). The HOA will have to collect 750,000 rubles from the residents. only for the purchase of keys.

It turns out a big economic benefit in comparison with the purchase of keys!

It will be easier to persuade homeowners to buy an automatic barrier when the amount of investment in equipment and installation is 2000-3000 rubles per apartment.

Compared to RFID tags, which can also be used as gate openers, RFID identification is somewhat different, the equipment kit is more expensive, but the range of application is wider.

In the next article, we will analyze the module from SmartAirkey - keyless access to the entrances and parking lots of apartment buildings.

Those homeowners who want to use a country house in the off-season and in winter, and periodically, are thinking about a remote GSM heating control system. The article provides connection diagrams and installation tips, prices for some devices on the Russian market are given.

Remote automatic control of the heating system of a country house can be part of the overall automation of engineering systems, security, fire safety, known as "Smart Home", or work independently, providing a given level of comfort for the arrival of the owners. The use of GSM modules allows you to start and control automatic processes using a mobile application installed on a cell phone.

The principle of operation of the GSM system

If you use the house from time to time, then the heating can work in the following modes:

• manual control - arrived, turned on, waited for the house to warm up, turned it off, left - low level of comfort, risk of freezing pipelines;
• automatic maintenance of the "idle" or "working" temperature regime - high heating costs, the risk of fire;
• turning on and maintaining the temperature regime from a remote source - in case of arrival or in an emergency (fire, freezing of pipelines) - a high level of comfort and safety, low energy costs.

The latter option seems to be the most optimal, although it requires preliminary adaptation of the heating system (including the boiler) and the acquisition, in fact, of the module itself.

The principle of operation of the system consists of an external influence on the GSM device, which gives commands to turn on the heating system in a given mode. The boiler is turned on, the work of climatic and system sensors is started, transmitting information to the controllers, which analyze it and issue commands to the actuators:

• opening, closing, regulation of pipeline fittings;
• increase, decrease in power or shutdown of the boiler;
• blocking of failed elements.

In turn, the system transmits data to the GSM module, which sends messages in the form of SMS to the command device (mobile phone, tablet, etc.): information about the room temperature, the coolant temperature, and emergency situations. Moreover, receiving messages depends on the capabilities of the module and the specified settings.

Basic elements of a GSM heating control system

All GSM-systems from different manufacturers operate using the same elements, differing only in the capabilities of the controller and the composition of the basic set. The standard kit may include:

• controller (GSM-module) - for a different number of inputs, expandable;
• remote temperature sensors (two or more, including an external one);
• leakage sensor (not in all models);
• master key (not in all models);
• panel - reader of electronic keys (not in all models);
• GSM antenna for signal amplification;
• network adapter - to connect to the network;
• battery (for a different battery life and not in all models);
• pads for connecting to the boiler (not in all models);
• bays of connecting wires.

Advice! The full size SIM card that plugs into the controller usually needs to be purchased separately. When buying a card, choose a telecom operator according to the principle of signal quality in the area of ​​\u200b\u200bthe house. Connect the ban on paid content (ads, polls), which clogs the information space and confuses the controller. Put some money on the card for guaranteed activation and call the SIM number from the phone you will control the system. The connection has been established.

When buying a separate GSM module with the ability to mount on a DIN rail, you can choose other devices yourself, guided by the electrical and electronic compatibility of the elements. With some experience in creating automated systems, you can assemble a system based on a suitable controller, for example, the domestic "ARIES".

When buying a set of a GSM heating control system, you can order its installation for an additional fee or install it yourself, using, first of all, the instructions for a specific set of equipment with a decoding of the purpose of the connection sockets, and secondly, general rules.

Assembling and testing the system:

1. The connecting wire is connected to the controller through the telephone jack.
2. On the other side of the wire, they connect a panel that reads the key (if there is one and if you intend to use it) and then through a system of wires with terminals - sensors (temperature, leaks).
3. Through the appropriate sockets, the controller is connected to the mains and to the battery (if it is not included in the set, it is better to buy and connect it as an emergency power supply to the controller in case of a power outage).
4. The antenna is connected to the controller through a special connector.
5. Insert a SIM card and, after giving a few minutes for recognition, activate the controller-phone connection by calling the card number.
6. Check the operation of the system even before installation at the installation sites. If everything is in order, proceed with the installation.

GSM module device: 1 — LAN contact; 2 - slots for SIM-cards; 3 - security and fire panel; 4 - power supply; 5 - battery

System installation:

1. Before installation, disconnect all wires and devices that were assembled for the above-described system performance test from the controller.
2. The controller is installed in a pre-selected location.
3. Next, you need to provide a connection to the controller of the boiler control system. I connect two wires (or one paired) to the controller relay with normally open contacts and extend it to a power plug specially designed for such switching, a connection block or a jumper made in the form of a loop of insulated wire, fixed with two screws. Before starting work, make sure that the device is disconnected from power sources.

1. When wiring, often you need a shorter length than given in the kit. This means that you can leave an unnecessary bay, or you will have to shorten the wire. It is best to shorten it and equip it with a terminal (compression) with special pliers for telephone wires, otherwise it will be difficult to do this and without a guarantee of quality. Terminals installed at opposite ends of a short wire must be installed relative to each other with a rotation of 180°.
2. When wiring wires to the installation site of temperature sensors, use cable ties and fix them on the walls openly or under the cover of decorative boxes. Thermal sensors, depending on the purpose, are mounted on the street (outdoor), in living rooms (room temperature), on the coolant supply pipe from the boiler (to control its operation).
3. Additional relays that are not used to control the boiler can be used for the water heater, boiler backup circuit or auxiliary heat generator, underfloor heating or anti-vandal sound alarm - as desired.

GSM heating control scheme: 1 - GSM control terminal; 2 - boiler; 3 - UPS; 4 - room temperature sensor; 5 - electric water heater; 6 - contactor; 7 - emergency temperature sensor; 8 - fire-fighting thermal sensor; 9 - leakage sensor; 10 - temperature sensor

1. It is desirable to connect equipment to the network through RCD, which protects it from power surges.
2. It is advisable to take care of an emergency power source.
3. The controller must be placed in a heated room with normal humidity, in an accessible place.
4. Update the software periodically.
5. Arrange duplication of SMS notifications on several phones.
6. Ask how self-installation affects warranty obligations.

Overview of offers on the market

The market offers GSM-systems for heating control of domestic and foreign manufacturers. Some are suitable for most modern boilers with the possibility of external control, others are designed for a specific type of heating equipment. The number of connected circuits varies from 1 to 12.

They also differ in prices. The cost of some controllers and sets of GSM systems (without installation) for September 2016 is shown in the table.

If you want to independently assemble a GSM control system, you need to determine the number of controlled zones and heat generating devices (heating, hot water, additional circuits), select wired or wireless thermostats, a controller, buy the appropriate wires with connectors, provide a shield for mounting the necessary elements. To control one electric convector in a small house, one GSM socket may be enough.