CN101852471B - Method for loading power to bus by air conditioning controller and controller - Google Patents
Method for loading power to bus by air conditioning controller and controller Download PDFInfo
- Publication number
- CN101852471B CN101852471B CN200910106285A CN200910106285A CN101852471B CN 101852471 B CN101852471 B CN 101852471B CN 200910106285 A CN200910106285 A CN 200910106285A CN 200910106285 A CN200910106285 A CN 200910106285A CN 101852471 B CN101852471 B CN 101852471B
- Authority
- CN
- China
- Prior art keywords
- bus
- controller
- power supply
- chip microcomputer
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to a method for loading power to a bus by an air conditioning controller. The method comprises the following steps that: a) a voltage detection module detects the voltage of the bus and transmits a detection signal to a singlechip; b) the singlechip judges whether the power has been loaded on the bus or not according to the detection signal of the voltage detection module; and if so, the singlechip returns to the step a), and otherwise, the singlechip controls a power loading module to load the power to the bus; and c) an over-current detection module detects the current of the bus and transmits the detection signal to the singlechip; and d) the singlechip judges whether over-current exists on the bus or not according to the detection signal of the over-current detection module; and if so, the singlechip controls the power loading module to cut off the loading of power to the bus by the controller and returns to the step a). The invention also discloses a controller and a supplementary controller. By using the method and the controller, an air conditioning system has the advantages of high fault tolerance, easy installation and low installation cost.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly, relate to a kind of method and controller of loading power to bus by air conditioning controller.
Background technology
At present VRV/VRF (Varied Refrigerant Volume/Variable Refrigerant Flow, variable refrigerant flow) advantages such as air-conditioning system is comfortable because of having, energy-saving and environmental protection, control are flexible are more and more by people's acceptance with like.This system is similar to the split-type air conditioner unit on system architecture; Single refrigeration system is general to adopt an off-premises station to connect one group of indoor set (generally can reach the 16-19 platform), or many off-premises stations more indoor set (generally can reach the 20-48 platform) that is connected in parallel is formed a bigger air-conditioning system.In practical application, can also a plurality of refrigeration systems be formed bigger air-conditioner control system (a common air-conditioner control system can comprise 128 indoor sets and 10 groups of off-premises stations at most) through self controlling the network interconnection together.In these systems, the multi computer communication technology is the assurance of the normal operation of system.
As depicted in figs. 1 and 2; In the existing technology, RS-485 is the most frequently used multi computer communication technology, adopts the combination of balance driver and differential receiver; Electrical characteristic is: the A in Fig. 1 promptly thinks logical one than the high 200mV of B, and A promptly thinks logical zero than the low 200mV of B.Therefore advantages such as RS-485 has transmission range long (can reach 1200 meters), and noise immunity is good are widely used.Electrical characteristic by RS-485 can know that the connection of RS-485 has polarity, that is to say that the A terminals of the 1# controller in Fig. 1 can only link to each other with the A terminals of 2# controller, and the B terminals of 1# controller can only link to each other with the B terminals of 2# controller.In case these two lines have connect instead, whole network just possibly paralysed, and installation requirement is very high, and fault-tolerance is relatively poor.In addition, in air-conditioning system, also have some additional controllers need receive on the communication bus, the power consumption of these additional controllers is little, if use independent power module, its cost can increase greatly, therefore can only be from power taking on the bus.Therefore and RS-485 can not provide controller required voltage, can only add two power lines again, and these two power lines also have polarity, has increased the workload and the installation cost of installation personnel so again.
Summary of the invention
The technical problem that the present invention will solve is to using the existing fault-tolerance of RS-485 relatively poor in existing air-conditioning system; The more high relatively defective of installation cost; A kind of means of communication and controller of air-conditioning system are provided, and it is better to have fault-tolerance, the advantage that easy mounting and installation cost are low.
For realizing above-mentioned purpose, the embodiment of the invention provides following technical scheme: a kind of method of loading power to bus by air conditioning controller, said controller comprise single-chip microcomputer, voltage detection unit, over-current detection unit and power supply loading unit, comprise the steps:
A) voltage of voltage detection unit testbus, and detection signal sent to single-chip microcomputer;
B) single-chip microcomputer is according to the detection signal of voltage detection unit, and whether judge has had power supply to load, if do not have, then controlling the power supply loading unit is this controller loading power on bus on the bus; If have, then return step a);
C) electric current of over-current detection unit testbus, and detection signal sent to single-chip microcomputer;
D) single-chip microcomputer is according to the detection signal of over-current detection unit, judges whether overcurrent of bus; If then control the power supply loading unit and break off of the power supply loading of this controller to bus., and return step a).
A kind of air-conditioner controller comprises:
Voltage detection unit is used for the voltage of testbus;
Single-chip microcomputer; Be used to send the UART data and give the HBS communication unit; Or receive the UART data that the HBS communication unit returns; And according to voltage detection signal that receives and current detection signal, send the power supply load signal and give the power supply loading unit, control power supply loading unit loads/unloads the power supply of bus;
The HBS communication unit is used for converting the UART data-signal that single-chip microcomputer sends into the HBS data-signal to bus, and will be converted into the UART data-signal from the HBS signal that bus receives and send to single-chip microcomputer;
Over-current detection unit is used for the electric current of testbus;
The power supply loading unit is used to receive the loading power data-signal of single-chip microcomputer, realizes the loading of bus power source/unload.
Said HBS communication unit is a twisted-pair feeder.
The power supply that said power supply loading unit loads is 8～40 volts a dc source.
A kind of air-conditioning additional controller comprises:
Single-chip microcomputer is used to receive the UART data-signal of HBS communication unit transmission and sends the UART data to the HBS communication unit;
The HBS communication unit is used for converting the UART data-signal that single-chip microcomputer sends into the HBS data-signal to bus, and will be converted into the UART data-signal from the HBS signal that bus receives and send to single-chip microcomputer;
Voltage conversion unit is used for the voltage transitions that obtains from bus is become the required operating voltage of said single-chip microcomputer.
Compare with the air-conditioning systems of the many communications of Traditional use RS-485, adopts air-conditioning power supply loading method described in the invention and the air-conditioning system of controller, have that fault-tolerance is better, the easy-on advantage, further also have a low advantage of installation cost.
Description of drawings
To combine accompanying drawing and embodiment that the present invention is described further below, in the accompanying drawing:
Fig. 1 is that available technology adopting RS-485 multi computer communication mode connects sketch map;
Fig. 2 be available technology adopting RS-485 communication master controller and additional controller with bus between be connected sketch map;
Fig. 3 is the schematic block circuit diagram of master controller provided by the invention;
Fig. 4 is the schematic block circuit diagram of additional controller provided by the invention;
Fig. 5 is the method flow diagram of a kind of controller provided by the invention to the bus loading power;
Fig. 6 be a kind of controller provided by the invention and additional controller with bus between be connected sketch map.
The specific embodiment
The embodiment of the invention provides a kind of controller, and is as shown in Figure 3, and said controller comprises single-chip microcomputer 301, HBS (Home Bus System, home bus system) communication module 302, power supply load-on module 303, voltage detection module 304 and over-current detection module 305.
In the embodiment of the invention; The data that said single-chip microcomputer 301 will send are delivered to the HBS communication module; Handle the communication data that the HBS communication module is received, and load/unload according to the power supply that the testing result of overvoltage detection module 304 and over-current detection module 305 is controlled power supply load-on module 303.
In the embodiment of the invention; The data transaction that said HBS communication module 302 sends over single-chip microcomputer 301 is to meet the signal of HBS standard to bus P1P2; And UART (Universal Asynchronous Receiver/Transmitter, the universal asynchronous reception/dispensing device) signal that will be converted into standard from the HBS signal that bus P1P2 receives supplies single-chip microcomputer 301 to handle.Need to prove that in the embodiment of the invention, what said HBS communication module 302 adopted is the subclass of HBS, has realized the control to air-conditioning system with a pair of twisted-pair feeder.
In the embodiment of the invention, said power supply loading unit 303 loads the dc source of 8～40V to bus P1P2.This power supply is with the power supply input as the additional controller that links to each other with bus.
In the embodiment of the invention, said voltage detection module 304 can be checked the voltage of bus P1P2, and testing result is delivered to single-chip microcomputer 301.
In the embodiment of the invention, said over-current detection module 305 is used for the electric current of testbus P1P2, and testing result is delivered to single-chip microcomputer 301, and single-chip microcomputer 301 is accomplished the loading of bus P1P2 power supply according to these detection signals and control logic.
Simultaneously, the embodiment of the invention also provides a kind of additional controller.
As shown in Figure 4, said additional controller comprises single-chip microcomputer 401, HBS communication module 402 and voltage transformation module 403.
Single-chip microcomputer 401 is used to receive the UART data-signal of HBS communication unit transmission and sends the UART data to the HBS communication unit;
In the embodiment of the invention, in order to practice thrift system's installation cost, the additional controller in the embodiment of the invention is directly gone up power taking from bus P1P2 and is pressed.
According to above-mentioned controller, the embodiment of the invention also provides a kind of method of loading power to bus by air conditioning controller, and is as shown in Figure 5, comprises the steps:
S501: the voltage of voltage detection unit testbus, and detection signal sent to single-chip microcomputer;
S502: single-chip microcomputer judges according to the detection signal of voltage detection unit whether power supply has been arranged on the bus, if not, then get into step S503; If then return step S501;
S503: control power supply loading unit makes this controller loading power on bus.
S504: the electric current of over-current detection unit testbus, and detection signal sent to single-chip microcomputer;
S505: single-chip microcomputer is according to the detection signal of over-current detection unit, judges whether overcurrent of bus; If then get into step S506;
S506: control power supply loading unit breaks off the power supply loading of this controller to bus, returns step S501.
Be example with Fig. 6 below, specify the method for embodiment of the invention controller loading power.
As shown in Figure 6, controller 1 adopts identical voltage to be connected with bus P1P2 between controller 2 and the controller 4.With controller 1, what controller 2 and controller 4 were different is that controller 3 adopts opposite voltage to be connected with bus P1P2.The opposite controller of wantonly one or two connection voltage can not be gone up loading power to bus P1P2 simultaneously.When going up, bus P1P2 exist the reverse controller that connects simultaneously when bus-powered; Over-current detection module to bus-powered controller detects bus P1P2 overcurrent; Promptly send over-current signal and give single-chip microcomputer; Said single-chip microcomputer sends signal and gives the power supply loading unit, and said power supply loading unit deenergization at once loads.
Compare with the air-conditioning system of the many communications of Traditional use RS-485, adopt the air-conditioning power supply loading method described in the invention and the air-conditioning system of controller, it is better to have fault-tolerance, the advantage that easy mounting and installation cost are low.
Though nonpolarity communication system according to the invention is to be example with the VRF air-conditioning system, it also can be applied to any one and drag in many air-conditioning systems, also can replace the RS-485 communications applications in any multi-computer communication.
Combine accompanying drawing that embodiments of the invention are described above; But the present invention is not limited to the above-mentioned specific embodiment, and the above-mentioned specific embodiment only is schematically, rather than restrictive; Those of ordinary skill in the art is under enlightenment of the present invention; Not breaking away under the scope situation that aim of the present invention and claim protect, also can make a lot of forms, these all belong to protection scope of the present invention.
Claims (4)
1. the method for a loading power to bus by air conditioning controller is characterized in that, said controller comprises single-chip microcomputer, voltage detection module, over-current detection module and power supply load-on module, comprises the steps:
A) voltage of voltage detection module testbus, and detection signal sent to single-chip microcomputer;
B) single-chip microcomputer is according to the detection signal of voltage detection module, and whether judge has had power supply to load, if do not have, then to control the power supply load-on module and make this controller loading power on bus on the bus; If have, then return step a);
C) electric current of over-current detection module testbus, and detection signal sent to single-chip microcomputer;
D) single-chip microcomputer is according to the detection signal of over-current detection module, judges whether overcurrent of bus; If, then control the power supply load-on module and break off of the power supply loading of this controller bus, return step a) then.
2. an air-conditioner controller is characterized in that, comprising:
Voltage detection module is used for the voltage of testbus;
Single-chip microcomputer; Be used to send the UART data and give the HBS communication unit; Or receive the UART data that the HBS communication unit returns; And according to voltage detection signal that receives and current detection signal, send the power supply load signal and give the power supply loading unit, control power supply loading unit loads/unloads the power supply of bus;
The HBS communication module is used for converting the UART data-signal that single-chip microcomputer sends into the HBS data-signal to bus, and will be converted into the UART data-signal from the HBS signal that bus receives and send to single-chip microcomputer;
The over-current detection module is used for the electric current of testbus;
The power supply load-on module is used to receive the loading power data-signal of single-chip microcomputer, realizes the loading of bus power source/unload.
3. air-conditioner controller according to claim 2 is characterized in that, the transmission medium of said HBS communication module is a twisted-pair feeder.
4. according to claim 2 or 3 described air-conditioner controllers, it is characterized in that the power supply that said power supply load-on module loads is 8～40 volts a dc source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910106285A CN101852471B (en) | 2009-04-02 | 2009-04-02 | Method for loading power to bus by air conditioning controller and controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910106285A CN101852471B (en) | 2009-04-02 | 2009-04-02 | Method for loading power to bus by air conditioning controller and controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101852471A CN101852471A (en) | 2010-10-06 |
| CN101852471B true CN101852471B (en) | 2012-09-19 |
Family
ID=42804076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910106285A Expired - Fee Related CN101852471B (en) | 2009-04-02 | 2009-04-02 | Method for loading power to bus by air conditioning controller and controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101852471B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890210B (en) * | 2012-09-27 | 2015-05-13 | 青岛海信日立空调系统有限公司 | Fault detection device and method |
| CN108507118B (en) * | 2018-03-09 | 2020-08-14 | 珠海格力电器股份有限公司 | Power supply method and device of multi-split air conditioning system, external unit and internal unit |
| CN110285552B (en) * | 2019-07-01 | 2020-07-28 | 珠海格力电器股份有限公司 | Line controller power supply control circuit, air conditioner internal unit and air conditioning system |
| CN113507283B (en) * | 2021-07-02 | 2024-10-15 | 北京青鸟环宇消防系统软件服务有限公司 | Non-polar bus isolating switch |
| CN114963409B (en) * | 2022-06-15 | 2024-06-11 | 合肥美的暖通设备有限公司 | Communication power supply circuit, control method, device, storage medium and air conditioning equipment |
| CN119914982A (en) * | 2023-10-31 | 2025-05-02 | 青岛海尔智慧楼宇科技有限公司 | Air conditioning control system and method and air conditioner |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051806A (en) * | 2007-05-17 | 2007-10-10 | 同济大学 | Novel electric driving control system and method for vehicle air conditioner compressor |
| CN201166796Y (en) * | 2007-12-11 | 2008-12-17 | 株洲南车时代电气股份有限公司 | Universal controller of an air conditioner |
-
2009
- 2009-04-02 CN CN200910106285A patent/CN101852471B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051806A (en) * | 2007-05-17 | 2007-10-10 | 同济大学 | Novel electric driving control system and method for vehicle air conditioner compressor |
| CN201166796Y (en) * | 2007-12-11 | 2008-12-17 | 株洲南车时代电气股份有限公司 | Universal controller of an air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101852471A (en) | 2010-10-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101852471B (en) | Method for loading power to bus by air conditioning controller and controller | |
| EP2993421B1 (en) | Low-power consumption standby circuit device, air conditioner and control method for air conditioner | |
| CN103201980B (en) | Network in vehicle and the method for operating the network in vehicle | |
| US6956463B2 (en) | Method and apparatus for providing both power and communication over two wires between multiple low voltage AC devices | |
| US20160064938A1 (en) | Dynamically Configurable Power-Over-Ethernet Apparatus and Method | |
| US20070021094A1 (en) | Power over ethernet controller suitable for multiple modes | |
| CN102324952A (en) | Non-polar two-line system communication circuit | |
| CN205405129U (en) | Remote wakening system for vehicle control unit | |
| CN103162372B (en) | Air conditioner, RS485 bus system of air conditioner and bus system control method | |
| CN112751412B (en) | Communication power supply system | |
| CN201207647Y (en) | Two-wire system non-polarity master-slave type communication transceiver | |
| CN109323374B (en) | Air conditioner controller and control method | |
| CN103181116B (en) | Network and the method for operational network | |
| CN101179398A (en) | Mongline two-way communication circuit | |
| CN213186140U (en) | MBUS host computer transmitting circuit | |
| CN202547004U (en) | Air conditioner and RS485 bus system thereof | |
| CN106440220A (en) | Air conditioner standby circuit and air conditioner | |
| KR20090017009A (en) | Air conditioning system | |
| KR102126357B1 (en) | Indoor unit and air conditioner using the same | |
| CN214406244U (en) | Air conditioning system | |
| CN110529986B (en) | Dual-system communication topological structure and dual-system air conditioner | |
| CN103363616A (en) | Air conditioner and control method, control terminal and control system thereof | |
| CN206908614U (en) | CAN communication polarity control circuit and system and multi-connected air conditioning system | |
| CN202931654U (en) | Intelligent lighting control management system | |
| CN213817960U (en) | A LED display control card |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: AIRWELL AIR-CONDITIONING TECHNOLOGY (CHINA) CO., L Free format text: FORMER OWNER: AIRWELL AIR CONDITIONING (CHINA) CO., LTD. Effective date: 20111231 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518129 SHENZHEN, GUANGDONG PROVINCE TO: 215400 SUZHOU, JIANGSU PROVINCE |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20111231 Address after: 215400 Room 309, development building, 302 Zheng He West Road, Taicang, Jiangsu, Suzhou Applicant after: Airwell China Co., Ltd. Address before: 518129, No. five South Road, Bantian street, Longgang District, Guangdong, Shenzhen, 2 Applicant before: Airwell China Co., Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20160402 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |