CN101706144A - Method for judging communication failures of indoor unit and outdoor unit of varied-frequency air conditioner - Google Patents
Method for judging communication failures of indoor unit and outdoor unit of varied-frequency air conditioner Download PDFInfo
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- CN101706144A CN101706144A CN200910154137A CN200910154137A CN101706144A CN 101706144 A CN101706144 A CN 101706144A CN 200910154137 A CN200910154137 A CN 200910154137A CN 200910154137 A CN200910154137 A CN 200910154137A CN 101706144 A CN101706144 A CN 101706144A
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Abstract
The invention relates to a method for judging communication failures of an indoor unit and an outdoor unit of a varied-frequency air conditioner, comprising the following steps of: (1) setting an indoor unit control chip on an indoor unit control panel to send a communication signal and setting the control chip on the indoor unit control panel to be capable of receiving the communication signal sent by the control chip; (2) connecting a zero line of the indoor unit control panel and a signal line in short circuit; (3) after undergoing a set detection time t, detecting whether the indoor unit control chip can normally receive the communication signal or not, if so, judging that the indoor unit has no communication failure, and the failure happens to an outdoor unit controller, otherwise, judging that the indoor unit has a failure; and (4) disconnecting the zero line of the indoor unit control panel and the signal line, after the failure is eliminated, recovering the varied-frequency air conditioner to normally communicate. The method can be used for judging whether the communication failure of the variable speed controller happens to the indoor unit or the outdoor unit without externally connecting any test equipment.
Description
Technical field:
The present invention relates to the transducer air conditioning field, specifically is a kind of decision method of communication failures of indoor unit and outdoor unit of varied-frequency air conditioner.
Background technology:
When transducer air conditioning normally moves, the information transmission and the control of interior machine and outer machine is to adopt the mode of communicating by letter to realize, and the mode that realizes communication is to adopt the method for electric current loop to realize mostly, information transmission between indoor set and the off-premises station is finished by communication unit with exchanging all, therefore, the accuracy rate of communication and real-time play a part very important for the service behaviour of whole air-conditioning system.
For the signal that guarantees communication unit receives, the high-accuracy of transmission, in various telecommunication circuits comparatively commonly used relatively at present, the inside and outside machine communication of transducer air conditioning is the asynchronous half-duplex communication of adopting based on UART, during actual the use, constitute electric current loop by increasing a holding wire and zero line, use the current drives mode to carry out data and transmit.And carry out the signal lotus root at two ends by photoelectric coupling circuit and control panel and close, form inside and outside machine telecommunication circuit, thereby increase antijamming capability and prolong communication distance,, also need the troubleshooting on the software and repeat operation such as transmission in order to realize reliable communication.
In the prior art, when communication failure appears in transducer air conditioning, transducer air conditioning itself can not judge that interior machine fault still is outer machine fault, must external special testing equipment could judge it is the fault of machine in the transducer air conditioning or the fault of the outer machine of transducer air conditioning, and the interior machine of transducer air conditioning and outer machine generally separate, so the control panel of outer machine and interior machine all need be removed during maintenance, maintenance is inconvenience very.
Summary of the invention:
The technical problem to be solved in the present invention is, overcome existing technological deficiency, providing a kind of does not need external any testing equipment can judge that the communication failure of transducer air conditioning is the decision method of the interior machine fault or the communication failures of indoor unit and outdoor unit of varied-frequency air conditioner of outer machine fault.
Technical solution of the present invention is, a kind of decision method of communication failures of indoor unit and outdoor unit of varied-frequency air conditioner is provided, and it may further comprise the steps:
(1): when communication failure appearred in transducer air conditioning, the interior machine control chip in setting on the machine control panel sent signal of communication, and the control chip on the machine control panel can receive the signal of communication that self is sent by control chip in setting;
(2): with the zero line and the holding wire short circuit of interior machine control panel;
(3): through detection time of a setting after the t, can the machine control chip receive signal of communication normally in detecting, if interior machine control chip can receive signal of communication normally, machine does not have communication failure in then judging, be outer machine controller communication failure, the machine controller communications status is indicated code normally in showing on the display screen of machine control panel in the transducer air conditioning, if interior machine control chip can not receive signal of communication normally, communication failure appears in machine in then judging, the indication code of machine communications status fault in showing on the display screen of machine control panel in the transducer air conditioning;
(4): the zero line and the holding wire of interior machine control panel are disconnected, and after fault was eliminated, transducer air conditioning recovered proper communication.
The decision method of a kind of communication failures of indoor unit and outdoor unit of varied-frequency air conditioner of the present invention compared with prior art has following significant advantage and beneficial effect:
All testing processes and detection method all can realize in the control panel of transducer air conditioning, do not need to increase any hardware cost, and when air-conditioner normally moves, can set this communication failure detection subprogram and not come into operation, and save the resource of single-chip microcomputer.And, this kind method had both been saved special-purpose checkout equipment, do not influence simultaneously the demonstration of normal failure code, where can both be when not having special-purpose checkout equipment no matter make air-conditioning, judge easily communication failures of indoor unit and outdoor unit appear in machine controller or machine controller outside, improve the speed that detects, made things convenient for maintenance.
Description of drawings:
Fig. 1 is the indoor set controller telecommunication circuit circuit diagram of a kind of transducer air conditioning of being suitable for of the present invention;
Fig. 2 is the outdoor controller telecommunication circuit circuit diagram of a kind of transducer air conditioning of being suitable for of the present invention;
Fig. 3 is the flow chart of the decision method of a kind of communication failures of indoor unit and outdoor unit of varied-frequency air conditioner of the present invention;
Fig. 4 is the program flow diagram that the decision method of a kind of communication failures of indoor unit and outdoor unit of varied-frequency air conditioner of the present invention is used for transducer air conditioning.
The specific embodiment:
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments:
As shown in Figure 1, convertible frequency air-conditioner air conditioner indoor machine controller telecommunication circuit mainly is by optocoupler, resistance, and electric capacity, diode, compositions such as PTC thermistance element, wherein optocoupler is isolated signal by opto-electronic conversion, reduces the interference in the signal transmission.Zener diode ZD1 is stabilized in 24V to voltage, and resistance R 2, R10, R11, R14 about 5mA, form electric current loop communication to current stabilization.Terminal Si, So connect RX, the TX port of indoor controller single-chip microcomputer respectively, are responsible for the reception and the transmission of indoor controller signal respectively.Communication mode adopts the UART communication protocol of standard.Holding wire terminal S1 is connected with zero terminal N2 with the holding wire terminal S2 of off-premises station respectively with zero terminal N1.As shown in Figure 2, frequency-change air conditioner outdoor machine controller telecommunication circuit mainly is made up of optocoupler, electric capacity, resistance, PTC thermistor etc.Two optocouplers that adopt model TLP521 isolate out interference on the communication line to signal of communication through opto-electronic conversion.Terminal Si, So connect RX, the TX port of outdoor controller single-chip microcomputer respectively, are responsible for the reception and the transmission of indoor controller signal respectively; Holding wire terminal S2 is connected with zero terminal N1 with the holding wire terminal S1 of indoor set respectively with zero terminal N2, inside and outside machine is by the complete communication loop of connecting to form of these terminals, to finish communication, the telecommunication circuit of the inside and outside machine controller of above transducer air conditioning is a prior art.
Fig. 4 is applied to the specific procedure flow chart of transducer air conditioning for method therefor of the present invention; as shown in the figure: when transducer air conditioning start operate as normal; inside and outside machine telecommunication circuit is started working; the indoor and outdoor machine control chip begins to receive and dispatch data; and the temperature that collects according to indoor and outdoor machine; electric current; data such as voltage and protection; select the state of air-conditioner operation, communication timer T_ERR starts working simultaneously, and whenever completes successfully once communication; communication timer T_ERR will be the time data zero clearing; communication is normal, then can not report fault, the transducer air conditioning operate as normal.
When telecommunication circuit breaks down, communication timer T_ERR data can not be cleared, when communication timer T_ERR accumulated time reaches communication failure T detection time (setting T=90s in this example) of setting, then can report communication failures of indoor unit and outdoor unit, and on interior machine display screen, showing " E5 " failure code, inside and outside machine quits work.It more than is the universal control method of transducer air conditioning.
The inventive method is carried out as shown in Figure 3 and Figure 4 according to the following steps at this moment:
Step (1): when communication failure appearred in transducer air conditioning, the interior machine control chip in setting on the machine control panel sent signal of communication, and the control chip on the machine control panel can receive the signal of communication that self is sent by control chip in setting.
Its specific embodiment is illustrated in figure 4 as: communication failure detects subprogram and starts working, interior machine communication pattern switches to the full-duplex communication state, when sending signal, interior machine chip also can wait for received signal, receiving byte counter count and time of reception timer T_count starts working simultaneously, when holding wire S1 in not having short circuit on the machine control panel and zero line N1, interior machine does not receive the information that self sends, receiving byte counter still is zero, timer count down to the detection time of setting behind the 10s, judges that whether the numerical value that receives byte counter is greater than 50 byte datas.If be not more than then zero clearing counter and timer, and restart counting and timing, show communication failures of indoor unit and outdoor unit " E5 " wait received signal simultaneously.
Step (2): holding wire S1 and zero line N1 in the short circuit on the machine control panel.
Step (3): through detection time of a setting after the t, can the machine control chip receive signal of communication normally in detecting, if interior machine control chip can receive signal of communication normally, machine does not have communication failure in then judging, be outer machine controller communication failure, the machine controller communications status is indicated code normally in showing on the display screen of machine control panel in the transducer air conditioning, if interior machine control chip can not receive signal of communication normally, communication failure appears in machine in then judging, the indication code of machine communications status fault in showing on the display screen of machine control panel in the transducer air conditioning.
As shown in Figure 4, set t=10s detection time in this example, behind time timer T_count 〉=10s, if the byte number that counter receives still is not more than 50 bytes, then interior machine control panel display screen shows failure code " E5 ", and machine controller fault in being judged as, while time timer T_count, receive byte counter count zero clearing, restart counting, behind time timer T_count 〉=10s, if the byte number that counter receives is greater than 50 bytes, code " 5E " was indicated in machine communication normally in then interior machine control panel display screen showed, machine controller is normal in being judged as, outer machine controller fault, while time timer T_count, receive byte counter count zero clearing, restart counting.
Step (4): if interior machine controller fault, machine controller in then keeping in repair, if interior machine controller is normal, then keep in repair outer machine controller, cut-off signal line S1 and zero line N1 terminal, behind the interior machine controller or outer machine controller of the maintenance failure of cutting off the electricity supply, energising again after the installation, it is normal that the start fault is eliminated communication, and transducer air conditioning recovers normal operation.
Claims (1)
1. the decision method of a communication failures of indoor unit and outdoor unit of varied-frequency air conditioner is characterized in that, it may further comprise the steps:
(1): when communication failure appearred in transducer air conditioning, the interior machine control chip in setting on the machine control panel sent signal of communication, and the control chip on the machine control panel can receive the signal of communication that self is sent by control chip in setting;
(2): with the zero line and the holding wire short circuit of interior machine control panel;
(3): through detection time of a setting after the t, can the machine control chip receive signal of communication normally in detecting, if interior machine control chip can receive signal of communication normally, machine does not have communication failure in then judging, be outer machine controller communication failure, the machine controller communications status is indicated code normally in showing on the display screen of machine control panel in the transducer air conditioning, if interior machine control chip can not receive signal of communication normally, communication failure appears in machine in then judging, the indication code of machine communications status fault in showing on the display screen of machine control panel in the transducer air conditioning;
(4): the zero line and the holding wire of interior machine control panel are disconnected, and after fault was eliminated, transducer air conditioning recovered proper communication.
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| CN200910154137A CN101706144A (en) | 2009-11-05 | 2009-11-05 | Method for judging communication failures of indoor unit and outdoor unit of varied-frequency air conditioner |
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| CN200910154137A CN101706144A (en) | 2009-11-05 | 2009-11-05 | Method for judging communication failures of indoor unit and outdoor unit of varied-frequency air conditioner |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102281083A (en) * | 2011-07-27 | 2011-12-14 | 江苏浩峰汽车附件有限公司 | Current-loop communication circuit for photovoltaic system |
| CN102748832A (en) * | 2012-06-07 | 2012-10-24 | 宁波奥克斯电气有限公司 | Air conditioning fault detection method |
| CN103104961A (en) * | 2013-01-30 | 2013-05-15 | 广东美的制冷设备有限公司 | Communication failure detection method and detection device |
| CN104390306A (en) * | 2014-10-24 | 2015-03-04 | 珠海格力电器股份有限公司 | Air conditioner communication system, air conditioner communication method and air conditioner |
| CN105319452A (en) * | 2014-07-08 | 2016-02-10 | 中国移动通信集团浙江有限公司 | Air conditioner power supply state alarm detection method and device |
| CN106152415A (en) * | 2016-08-05 | 2016-11-23 | 珠海格力电器股份有限公司 | The fault determination method of air conditioning system connection wiring and device |
| CN106322662A (en) * | 2016-08-24 | 2017-01-11 | 青岛海尔空调电子有限公司 | Wireless communication system and method for air conditioner indoor units and air conditioner outdoor unit |
| CN108006891A (en) * | 2017-11-27 | 2018-05-08 | 珠海格力电器股份有限公司 | Air conditioner fault reminding method and device |
| CN108088045A (en) * | 2017-12-18 | 2018-05-29 | 广东美的制冷设备有限公司 | Switching method, air conditioner and the readable storage medium storing program for executing of air conditioner communication mode |
| CN109140684A (en) * | 2018-08-21 | 2019-01-04 | 珠海格力电器股份有限公司 | Air-conditioning and its communication fault detection method, device and storage medium |
| CN110687428A (en) * | 2018-07-06 | 2020-01-14 | 青岛海尔空调器有限总公司 | Frequency conversion air conditioner fault detection frock with wireless function |
| CN110687364A (en) * | 2018-07-06 | 2020-01-14 | 青岛海尔空调器有限总公司 | Fault detection tool for variable-frequency air conditioner |
| CN111156650A (en) * | 2020-01-10 | 2020-05-15 | 珠海格力电器股份有限公司 | Air conditioning unit and communication fault detection method thereof |
| CN112013506A (en) * | 2019-05-31 | 2020-12-01 | 青岛海尔空调电子有限公司 | Communication detection method and device and air conditioner |
| CN113820588A (en) * | 2021-09-02 | 2021-12-21 | 格力电器（武汉）有限公司 | Detection method for integration of display and communication interface of air conditioner control mainboard |
| CN115111702A (en) * | 2022-06-21 | 2022-09-27 | 北京小米移动软件有限公司 | Control method and device of after-sale controller, storage medium and chip |
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2009
- 2009-11-05 CN CN200910154137A patent/CN101706144A/en active Pending
Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102281083A (en) * | 2011-07-27 | 2011-12-14 | 江苏浩峰汽车附件有限公司 | Current-loop communication circuit for photovoltaic system |
| CN102748832A (en) * | 2012-06-07 | 2012-10-24 | 宁波奥克斯电气有限公司 | Air conditioning fault detection method |
| CN102748832B (en) * | 2012-06-07 | 2014-09-17 | 宁波奥克斯电气有限公司 | Air conditioning fault detection method |
| CN103104961A (en) * | 2013-01-30 | 2013-05-15 | 广东美的制冷设备有限公司 | Communication failure detection method and detection device |
| CN105319452A (en) * | 2014-07-08 | 2016-02-10 | 中国移动通信集团浙江有限公司 | Air conditioner power supply state alarm detection method and device |
| CN104390306A (en) * | 2014-10-24 | 2015-03-04 | 珠海格力电器股份有限公司 | Air conditioner communication system, air conditioner communication method and air conditioner |
| CN106152415A (en) * | 2016-08-05 | 2016-11-23 | 珠海格力电器股份有限公司 | The fault determination method of air conditioning system connection wiring and device |
| CN106152415B (en) * | 2016-08-05 | 2018-12-11 | 珠海格力电器股份有限公司 | The fault determination method and device of air-conditioning system connection wiring |
| CN106322662A (en) * | 2016-08-24 | 2017-01-11 | 青岛海尔空调电子有限公司 | Wireless communication system and method for air conditioner indoor units and air conditioner outdoor unit |
| CN106322662B (en) * | 2016-08-24 | 2019-11-15 | 青岛海尔空调电子有限公司 | Machine wireless communication system and communication means inside and outside air-conditioning |
| CN108006891A (en) * | 2017-11-27 | 2018-05-08 | 珠海格力电器股份有限公司 | Air conditioner fault reminding method and device |
| CN108006891B (en) * | 2017-11-27 | 2019-12-31 | 珠海格力电器股份有限公司 | Air conditioner fault prompting method and device |
| CN108088045A (en) * | 2017-12-18 | 2018-05-29 | 广东美的制冷设备有限公司 | Switching method, air conditioner and the readable storage medium storing program for executing of air conditioner communication mode |
| CN108088045B (en) * | 2017-12-18 | 2020-06-23 | 广东美的制冷设备有限公司 | Air conditioner communication mode switching method, air conditioner and readable storage medium |
| CN110687428A (en) * | 2018-07-06 | 2020-01-14 | 青岛海尔空调器有限总公司 | Frequency conversion air conditioner fault detection frock with wireless function |
| CN110687364A (en) * | 2018-07-06 | 2020-01-14 | 青岛海尔空调器有限总公司 | Fault detection tool for variable-frequency air conditioner |
| CN110687364B (en) * | 2018-07-06 | 2022-01-25 | 青岛海尔空调器有限总公司 | Fault detection tool for variable-frequency air conditioner |
| CN110687428B (en) * | 2018-07-06 | 2022-01-21 | 青岛海尔空调器有限总公司 | Frequency conversion air conditioner fault detection frock with wireless function |
| CN109140684B (en) * | 2018-08-21 | 2020-08-25 | 珠海格力电器股份有限公司 | Air conditioner, communication fault detection method and device thereof and storage medium |
| CN109140684A (en) * | 2018-08-21 | 2019-01-04 | 珠海格力电器股份有限公司 | Air-conditioning and its communication fault detection method, device and storage medium |
| CN112013506A (en) * | 2019-05-31 | 2020-12-01 | 青岛海尔空调电子有限公司 | Communication detection method and device and air conditioner |
| US20220029860A1 (en) * | 2019-05-31 | 2022-01-27 | Qingdao Haier Air-Conditioning Electronic Co., Ltd. | Method and device for communication detection and air conditioner |
| EP3869115A4 (en) * | 2019-05-31 | 2022-03-02 | Qingdao Haier Air-Conditioning Electronic Co., Ltd | Method and device for communication detection, and air conditioner |
| US11611455B2 (en) | 2019-05-31 | 2023-03-21 | Qingdao Haier Air-Conditioning Electronic Co., Ltd. | Method and device for communication detection and air conditioner |
| CN111156650A (en) * | 2020-01-10 | 2020-05-15 | 珠海格力电器股份有限公司 | Air conditioning unit and communication fault detection method thereof |
| CN113820588A (en) * | 2021-09-02 | 2021-12-21 | 格力电器（武汉）有限公司 | Detection method for integration of display and communication interface of air conditioner control mainboard |
| CN113820588B (en) * | 2021-09-02 | 2024-05-10 | 格力电器（武汉）有限公司 | Integrated detection method for display and communication interface of air conditioner control main board |
| CN115111702A (en) * | 2022-06-21 | 2022-09-27 | 北京小米移动软件有限公司 | Control method and device of after-sale controller, storage medium and chip |
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