CN112484314A - General communication interface for gas heating water heater - Google Patents
General communication interface for gas heating water heater Download PDFInfo
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- CN112484314A CN112484314A CN202011442323.8A CN202011442323A CN112484314A CN 112484314 A CN112484314 A CN 112484314A CN 202011442323 A CN202011442323 A CN 202011442323A CN 112484314 A CN112484314 A CN 112484314A
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- Prior art keywords
- control board
- communication interface
- water heater
- heating water
- universal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
Abstract
The invention discloses a general communication interface of a gas heating water heater, which is characterized by comprising a TTL UART hardware interface, a main control board and a communication interface, wherein the TTL UART hardware interface is adopted and is powered by the main control board; a universal modbus protocol framework and an RTU message type are adopted, address point location parameters are definitely disclosed, and a user can freely select required functions and data according to a protocol. The invention is specially used for data transmission with communication equipment, opens the function of the gas heating water heater while not disclosing the communication protocol between the main controller of a manufacturer and the key display controller, is convenient for the gas heating water heater to be connected to an intelligent home platform and the intelligent home platform to effectively monitor the gas heating water heater.
Description
Technical Field
The invention relates to the technical field of gas appliances, in particular to a universal communication interface of a gas heating water heater.
Background
With the rise and popularization of smart homes, a gas heating water heater (hereinafter referred to as a wall-mounted heater) is used as a heat source product for heating in northern households, and is necessary to have an open communication interface, so that the gas heating water heater is conveniently connected to a smart home platform, and data transmission and interconnection control of other household devices are realized. Part hanging stove uses the wifi module as the interface, inserts the network platform of third party like mijia etc. and realizes simple domestic appliance interconnection control. The network platform is limited by a third party and can only be used on a specified network platform; and the selection range of other linkage equipment by the user is limited. Due to the fact that manufacturers are reluctant to disclose technical secrets such as communication protocols and the like and the limitation of network platforms, the system is limited in open function, functions are solidified, use is limited, and personalized requirements of users and control requirements of smart homes cannot be met.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provide a general communication interface of a gas heating water heater, which is convenient for the gas heating water heater to be connected to an intelligent home platform and effectively monitors the gas heating water heater by the intelligent home platform.
The invention adopts the following technical scheme to realize the purpose: a general communication interface of a gas heating water heater is characterized by comprising a TTL UART hardware interface and a main control board for supplying power; a universal modbus protocol framework and an RTU message type are adopted, address point location parameters are definitely disclosed, functions and data of the wall-mounted boiler are opened to the maximum extent, and a user can freely select the required functions and data according to a protocol.
As a further explanation of the above scheme, the UART hardware interface is converted into a general EIA-485 hardware interface by connecting a TTL to 485 module.
Furthermore, the main control board is provided with an MCU1 and a power supply module, and the main control board MCU1 is responsible for acquiring data of each sensor and controlling each execution element; the universal communication interface is arranged on a key display control board, the key display control board adopts a double-serial-port MCU2, the serial port of the main control board MCU1 is connected with the serial port 1 of the key display control board MCU2, and the two-way communication is realized between the two; the universal communication interface is connected with the serial port 2 of the key display control board MCU2 and is connected with the power module on the main control board, and the universal communication interface is in two-way communication with external communication equipment, performs data transmission and provides power for the external communication equipment.
Furthermore, the universal communication interface is a four-pin interface, and the interface pin sequence is specified to be a +5V power pin, a data sending pin, a command receiving pin and a GND grounding pin.
Further, the address point location parameter table of the protocol comprises data names, register numbers, data types, data descriptions and readable and writable conditions, wherein the data names comprise on-off, fan, water pump, heating set temperature, heating water outlet temperature, bathroom set temperature, bathroom water outlet temperature, environment temperature, gas quantity, running time and heating return difference temperature parameters; the readable and writable data comprises startup and shutdown, heating set temperature and heating return difference temperature of bathroom set temperature, and the rest parameters are read-only data.
Further, the protocol specifies the baud rate and byte format of the communication.
Furthermore, after the user selects the external communication equipment, the user is connected with a universal communication interface of the gas heating water heater, and the user analyzes the required data and compiles the control command according to the public protocol programming and establishes stable data transmission with the key display control board; the operating parameters of the gas heating water heater are transmitted to the key display control board by the main control board, and then are compiled and processed by the key display control board and sent to external communication equipment through a universal communication interface; the external communication equipment sends the command information to a key display control board of the gas heating water heater through a universal communication interface, and the command information is analyzed and processed by the key display control board and then sent to the main control board for execution.
The invention adopts the technical proposal to achieve the following beneficial effects:
the invention adopts a universal communication interface, which is convenient for the user to connect conveniently; a user can freely select an external communication device and an intelligent home platform, look up the operation parameters of the gas heating water heater and control the gas heating water heater according to a modbus protocol and an address point location parameter table, and meet the personal requirements of the user and the control requirements of the intelligent home; two sets of mutually independent communication protocols are adopted to realize the confidentiality and uniqueness of the communication protocol between the main controller of a manufacturer and the key display controller; the universal communication interface adopts a universal modbus protocol frame, so that the universality is improved, and the access difficulty is reduced.
Drawings
FIG. 1 is a schematic diagram of the system connection of the present invention;
fig. 2 is a schematic diagram of the system connection after the TTL module is converted to 485 module according to the present invention.
Description of reference numerals: the system comprises an S1 main control board, an S2 key display control board, an S3 TTL to 485 module, an S11 main control board MCU1 serial port, an S12 power supply module, an S21 key display control board MCU2 serial port 1, an S22 key display control board MCU2 serial port 2, an S23 key display control board MCU and a universal communication interface.
Detailed Description
The technical solution is described in detail with reference to specific embodiments below.
Example 1
As shown in FIG. 1, the invention includes adopting TTL UART hardware interface, and the main control board S1 supplies power; a universal modbus protocol framework and an RTU message type are adopted, address point location parameters are definitely disclosed, functions and data of the wall-mounted boiler are opened to the maximum extent, and a user can freely select the required functions and data according to a protocol. In the embodiment, a peripheral circuit of a main control board is electrically connected with each sensor and each executive element (such as a fan, a water pump and a fuel gas proportional valve) of the gas heating water heater, the main control board is provided with an MCU1 and a power supply module, and the MCU1 of the main control board is responsible for acquiring data of each sensor and controlling each executive element; the universal communication interface is arranged on a key display control board S2, the key display control board adopts a double-serial port MCU2, a main control board MCU1 serial port S11 is connected with a serial port 1S21 of a key display control board MCU2, and the two-way communication is realized between the two; the universal communication interface is connected with a serial port 2S22 of the key display control board MCU2 and is simultaneously connected with a power module S12 on the main control board, and the universal communication interface S23 is in two-way communication with external communication equipment, performs data transmission and provides power for the external communication equipment.
The address point location parameter table of the universal communication interface protocol comprises data names, register numbers, data types, data descriptions and readable and writable conditions, wherein the data names comprise parameters such as startup and shutdown, a fan, a water pump, heating set temperature, heating water outlet temperature, bathroom set temperature, bathroom water outlet temperature, environment temperature, gas quantity, operation time and heating return difference temperature. The readable and writable data comprises startup and shutdown, heating set temperature and bathroom set temperature heating return difference temperature, and the rest parameters are read-only data. The protocol also specifies the baud rate and byte format of the communication. The universal communication interface is a four-pin interface, and the specified interface pin sequence is defined as a +5V power pin, a data sending pin, a command receiving pin and a GND grounding pin.
After the user selects the external communication equipment, the universal communication interface is connected with the universal communication interface of the gas heating water heater. And the user analyzes the required data and compiles the control command according to the public protocol programming, and establishes stable data transmission with the key display control board.
The operating parameters of the gas heating water heater are transmitted to the key display control board by the main control board, and then are compiled and processed by the key display control board and sent to external communication equipment through a universal communication interface; the external communication equipment sends the command information to a key display control board of the gas heating water heater through a universal communication interface, and the command information is analyzed and processed by the key display control board and then sent to the main control board for execution.
Example 2
In this embodiment, as shown in fig. 2, when a communication device using an EIA-485 interface needs to be externally connected, a TTL 485 conversion module S3 may be connected between the general communication interface and the communication device to complete the matching of the externally connected communication device.
Compared with the prior art, the key display control board adopts the double serial port MCU, one serial port is connected with the universal communication interface and is specially used for data transmission with communication equipment, the function of the gas heating water heater is opened while the communication protocol between the main controller of a manufacturer and the key display controller is not disclosed, and the gas heating water heater is conveniently accessed to the intelligent home platform and the intelligent home platform can effectively monitor the gas heating water heater.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (7)
1. A general communication interface of a gas heating water heater is characterized by comprising a TTL UART hardware interface and a main control board for supplying power; a universal modbus protocol framework and an RTU message type are adopted, address point location parameters are definitely disclosed, and a user can freely select required functions and data according to a protocol.
2. The universal communication interface of the gas-fired heating water heater according to claim 1, wherein the UART hardware interface is converted into a universal EIA-485 hardware interface by connecting a TTL to 485 module.
3. The universal communication interface of the gas heating water heater according to claim 1, wherein the main control board is provided with an MCU1 and a power module, and the MCU1 is responsible for collecting data of each sensor and controlling each actuator; the universal communication interface is arranged on a key display control board, the key display control board adopts a double-serial-port MCU2, the serial port of the main control board MCU1 is connected with the serial port 1 of the key display control board MCU2, and the two-way communication is realized between the two; the universal communication interface is connected with the serial port 2 of the key display control board MCU2 and is connected with the power module on the main control board, and the universal communication interface is in two-way communication with external communication equipment, performs data transmission and provides power for the external communication equipment.
4. The gas heating water heater universal communication interface of claim 1, wherein the universal communication interface is a four-pin interface, and the interface pin sequence is specified as +5V power pin, data transmission pin, command receiving pin and GND grounding pin.
5. The universal communication interface of the gas-fired heating water heater according to claim 1, wherein the address point location parameter table of the protocol contains data names, register numbers, data types, data descriptions, readable and writable conditions, and the data names include on/off, fan, water pump, heating set temperature, heating outlet temperature, bathroom set temperature, bathroom outlet temperature, ambient temperature, gas amount, operation time, and heating return difference temperature parameters; the readable and writable data comprises startup and shutdown, heating set temperature and heating return difference temperature of bathroom set temperature, and the rest parameters are read-only data.
6. The gas-fired heating water heater universal communication interface according to claim 1 or 5, wherein the protocol specifies the baud rate and byte format of the communication.
7. The universal communication interface of the gas heating water heater according to claim 1, wherein after a user selects an external communication device, the universal communication interface is connected with the universal communication interface of the gas heating water heater, and the user can analyze the required data and compile the control command according to the public protocol programming and establish stable data transmission with the key display control board; the operating parameters of the gas heating water heater are transmitted to the key display control board by the main control board, and then are compiled and processed by the key display control board and sent to external communication equipment through a universal communication interface; the external communication equipment sends the command information to a key display control board of the gas heating water heater through a universal communication interface, and the command information is analyzed and processed by the key display control board and then sent to the main control board for execution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011442323.8A CN112484314B (en) | 2020-12-11 | 2020-12-11 | Universal communication interface for gas heating water heater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011442323.8A CN112484314B (en) | 2020-12-11 | 2020-12-11 | Universal communication interface for gas heating water heater |
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| CN112484314A true CN112484314A (en) | 2021-03-12 |
| CN112484314B CN112484314B (en) | 2023-09-19 |
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| CN202011442323.8A Active CN112484314B (en) | 2020-12-11 | 2020-12-11 | Universal communication interface for gas heating water heater |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004714A (en) * | 2010-12-10 | 2011-04-06 | 南京科远自动化集团股份有限公司 | General type serial bus communication device |
| CN105242601A (en) * | 2015-10-09 | 2016-01-13 | 贵州智达科技有限责任公司 | Multi-compatibility bidirectional communication protocol of serial port of electric warming oven |
-
2020
- 2020-12-11 CN CN202011442323.8A patent/CN112484314B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004714A (en) * | 2010-12-10 | 2011-04-06 | 南京科远自动化集团股份有限公司 | General type serial bus communication device |
| CN105242601A (en) * | 2015-10-09 | 2016-01-13 | 贵州智达科技有限责任公司 | Multi-compatibility bidirectional communication protocol of serial port of electric warming oven |
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| Publication number | Publication date |
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| CN112484314B (en) | 2023-09-19 |
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