CN110687364B - Fault detection tool for variable-frequency air conditioner - Google Patents
Fault detection tool for variable-frequency air conditioner Download PDFInfo
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Abstract
The utility model provides a frequency conversion air conditioner fault detection frock includes: powering on the air conditioner; the detection tool detects and determines one of the indoor unit and the outdoor unit as a main device and the other one as a slave device; if the detection tool receives command data sent by the master device, the command data are forwarded to the slave device, and if response data fed back by the slave device are not received within a first effective preset value, the communication fault of the slave device is judged; if the received response data fed back from the equipment is within the first effective preset value, judging that the communication is normal; and if the detection tool does not receive the command data sent by the master equipment, sending test data to the slave equipment, and if response data fed back by the slave equipment are received within a second effective preset value, determining that the master equipment has a communication fault. The invention has the advantages of good universality and high intelligent degree.
Description
Technical Field
The invention relates to the technical field of air conditioning equipment, in particular to a fault detection tool for a variable frequency air conditioner.
Background
The communication fault of the variable frequency air conditioner is a common circuit fault, when a communication circuit part has a fault, various control instructions of the air conditioner cannot be transmitted, and various functions of the air conditioner cannot be normally completed. The direct embodiment of the communication circuit fault comprises the following steps: the whole air conditioner cannot be started, the outdoor unit does not work, and the whole air conditioner is protected when the air conditioner is started. In the prior art, the inverter air conditioner generally has a fault code display, and once a communication circuit has a fault, the air conditioner can display a corresponding fault code. However, in actual maintenance, it is not easy to directly find out a specific failure point by simply relying on a failure code, and when a code indicating a communication failure occurs in the air conditioner is displayed, it can be determined that the communication circuit is abnormal only in a general manner. Maintenance personnel confirm concrete fault point through detection circuitry parameter or change the standby circuit board that has similar communication interface, have not only increased the maintenance cost, and maintenance efficiency is also lower.
Disclosure of Invention
The invention provides a fault detection tool for a variable frequency air conditioner, and aims to solve the problems of high overhaul cost and low efficiency when communication faults are determined in the prior art.
The utility model provides a frequency conversion air conditioner fault detection frock, includes:
the first fault diagnosis module comprises a first communication state detection unit and a first communication unit, wherein the first communication state detection unit is used for judging the communication state of the master device according to a clock signal and command data, and the first communication unit is used for outputting test data to the slave device according to the communication state of the master device; and a second fault diagnosis module including a second communication state detection unit and a second communication unit, wherein the second communication unit is used for inputting response data; the second communication state detection unit is used for judging the communication state of the slave device according to the clock signal and the response data.
The communication device further comprises a display module, and the display module receives and displays the master equipment fault signal output by the first communication state detection unit or the slave equipment fault signal output by the second communication state detection unit.
Further, the first fault diagnosis module further comprises a first clock, and a first effective preset value is stored in the first clock; when the timing duration of the first clock is less than or equal to a first effective preset value, if the first communication state detection unit judges that command data are received, the first communication unit outputs the received command data to slave equipment as test data, and the first communication state detection unit generates a normal signal of the master equipment; if the first communication state detection unit judges that the command data is not received, the first communication unit generates test data and outputs the test data to the slave equipment, and the first communication state detection unit generates a master equipment fault signal and outputs the master equipment fault signal to the display module.
Further, the second fault diagnosis module further comprises a second clock, and a second effective preset value is stored in the second clock; when the timing duration of the second clock is less than or equal to a second effective preset value, if the second communication state detection unit judges that response data input through the second communication unit is received, the second communication state detection unit generates a normal signal of the slave device; and if the second communication state detection unit judges that the response data is not received, the second communication state detection unit generates a slave equipment fault signal and outputs the slave equipment fault signal to the display module.
Further, the first communication unit outputs the test data to the slave device a plurality of times at a fixed cycle, and if the second communication state detection unit receives the response data input through the second communication unit, the first communication unit stops outputting the test data to the slave device.
The system further comprises a third fault diagnosis module, wherein a sensor parameter threshold is stored in the third fault diagnosis module, the third fault diagnosis module extracts a sensor real-time parameter in the command data and/or the response data, compares the sensor real-time parameter with the sensor parameter threshold, and outputs a sensor fault signal if the sensor real-time parameter exceeds the sensor parameter threshold.
Preferably, the sensor parameter thresholds include an indoor coil temperature threshold, an outdoor coil temperature threshold, and an outdoor ambient temperature threshold.
When the first communication state detection unit generates a master device fault signal, the driving module outputs a first driving instruction to the slave device, and the slave device receives the first driving instruction and controls the corresponding component to work; when the second communication state detection unit generates a slave device fault signal, the driving module outputs a second driving instruction to the master device, and the master device receives the second driving instruction and controls the corresponding component to work.
Further, the fault detection tool of the variable frequency air conditioner is connected in series between the indoor unit and the outdoor unit of the air conditioner.
According to the detection tool for the variable frequency air conditioner, when the air conditioner has a communication fault code, the fault point can be automatically judged through the first fault diagnosis module and the second fault diagnosis module respectively, and automatic detection is achieved. The method has the advantages of good universality and high intelligent degree.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a block diagram schematically illustrating a structure of a fault detection tool for an inverter air conditioner according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a block diagram schematically illustrating a structure of a fault detection tool for an inverter air conditioner according to a specific embodiment of the present invention. As shown in fig. 1, the fault detection tool 100 includes a first fault diagnosis module 101 and a second fault diagnosis module 102 which are independently provided. Specifically, the first fault diagnosis module 101 includes a first communication state detection unit 101-1 and a first communication unit 101-2. Wherein the first communication state detection unit 101-1 is configured to determine a communication state of the master device 104 according to the clock signal and the command data, and the first communication unit 101-2 is configured to output test data to the slave device 105 according to the communication state of the master device 104. The second fault diagnosis module 102 includes a second communication state detection unit 102-1 and a second communication unit 102-2. Wherein the second communication unit 102-2 is used for inputting response data, and the second communication state detection unit 102-1 is used for judging the communication state of the slave device 105 according to the clock signal and the response data. During communication, one of the indoor unit and the outdoor unit is a master device 104, and the other is a slave device 105.
Specifically, a single-channel half-duplex asynchronous serial communication mode is adopted between the first fault diagnosis module 101 and the master device 104, and a single-channel half-duplex asynchronous serial communication mode is also adopted between the second fault diagnosis module 102 and the slave device 105. The detection tool 100 is connected to the master device 104 through L, N, a ground wire and a communication wire, and is connected to the slave device 105 through L, N, a ground wire and a communication wire, namely, is connected in series between an indoor unit and an outdoor unit of an air conditioner. If the communication of the master device 104 is normal, in the detection period, the master device 104 and the detection tool 100 may transmit data signals through a data group composed of binary codes, and output command data to the detection tool 100. Preferably, the data set consists of 16 bytes, each byte consisting of a set of 8-bit binary codes. When communication is performed, the master device 104 first sends a byte representing the start identification code, then sequentially sends data information of 1 st to 16 th bytes, and finally sends a byte of the end identification code, thereby completing communication of command data. More specifically, at one end of the detection tool 100, if the first communication state detection unit 101-1 determines that there is an error in the received data set representing the command data or that the data set representing the command data is not received within the time range of the set clock signal, the first communication state detection unit 101-1 may determine that the communication state of the master device 104 is faulty. If the first communication state detection unit 101-1 determines that the correct data group representing the command data is received within the time range of the set clock signal, it can be determined that the communication state of the master 104 is normal.
After obtaining the communication status of the master device 104, the detection tool 100 further determines the communication status of the slave device 105. If the first communication state detection unit 101-1 determines that there is an error in the received data group representing the command data or that there is no reception of the data group representing the command data within the time range in which the clock signal is set, i.e., there is a failure in the communication state of the master device 104, the first communication unit 101-2 generates test data conforming to the command data format and outputs the test data to the slave device 105 in order to verify the communication state of the slave device 105. If the communication of the slave device 105 is normal, the slave device 105 feeds back the response data within a set time range after receiving the test data. The second communication unit 102-2 inputs the fed back response data into the detection tool 100, and the second communication state detection unit 102-1 determines whether the fed back response data is received within a set time range, and checks whether the fed back response data has errors. If the second communication state detection unit 102-1 determines that the fed-back response data is not received within the set time range or that the fed-back response data is verified to be erroneous, the second communication state detection unit 102-1 determines that the slave device 105 has a communication failure.
In order to improve the detection efficiency, if the first communication state detection unit 102-1 determines that the master device 104 is communicating normally, the first communication unit 101-2 stops generating the test data, and outputs the command data as the test data to the slave device 105. The second communication unit 102-2 inputs the feedback response data of the slave device 105, and the second communication state detection unit 102-2 determines the communication state of the slave device to determine whether the feedback response data is received within a set time range and whether an error exists in the response data.
By adopting the detection tool for the variable frequency air conditioner, provided by the embodiment of the invention, the communication fault of the air conditioner can be effectively detected, and the detection tool has the advantages of convenience and quickness in use and good use effect.
Preferably, the detection tool for the inverter air conditioner further comprises a display module 103. The display module 103 receives the master failure signal output by the first communication state detection unit 101-1 or the slave failure signal output by the second communication state detection unit 102-2, and displays the signals through a nixie tube.
To enable independent detection, a first clock is provided in the first fault diagnosis module 101-1. The first clock stores a first effective preset value. In the detection period, if the timing duration of the first clock is less than or equal to a first valid preset value and the first communication state detection unit 101-1 determines that command data meeting the format requirement is received, the first communication unit 101-2 outputs the received command data as test data to the slave device 105, and the first communication state detection unit 101-1 generates a master device communication normal signal. If the first communication state detection unit 101-1 determines that the command data is not received or the command data is incorrect, the first communication unit 101-2 generates the test data and outputs the test data to the slave device 105, and the first communication state detection unit 101-1 generates the master device failure signal and outputs the master device failure signal to the display module 103. Similarly, a second clock is further provided in the second fault diagnosis module 102, and a second valid preset value is stored in the second clock. When the timing duration of the second clock is less than or equal to the second valid preset value, if the second communication state detection unit 102-1 determines that the response data input through the second communication unit 102-2 is received and there is no error in the response data, the second communication state detection unit 102-1 generates a slave device normal signal. If the second communication state detection unit 102-1 determines that the response data is not received or the response data has an error, the second communication state detection unit 102-1 generates a slave device failure signal and outputs the slave device failure signal to the display module 103. Through the first clock and the second clock which are independently arranged, the first fault diagnosis module and the second fault diagnosis module can independently detect the communication faults of the master equipment and the slave equipment and rapidly send the detection results to the display module for displaying, and in the same detection period, maintenance personnel can carry out multi-round detection and verification, so that the detection efficiency and the detection precision are improved.
In the communication process, transient communication faults can be caused sometimes due to electronic noise, and the communication faults can be repaired by self after the electronic noise disappears, and no human intervention is needed. If the detection tool reports the communication fault, a certain degree of misjudgment can be caused. To avoid this, the first communication unit 101-2 preferably outputs test data to the slave device 105 a plurality of times in a fixed cycle. Once the second communication state detection unit 102-1 receives the response data to verify correctness, which is input through the second communication unit 102-2, the first communication unit 101-2 stops outputting the test data to the slave device 105. By adopting the mode, on one hand, the communication fault can be accurately judged through multiple times of detection, the misjudgment is avoided, on the other hand, the detection period can be shortened, and the detection efficiency is improved.
The command data comprises a plurality of bytes of data corresponding to machine types, operation modes, target compressor operation frequency, protection states, set temperature, fan rotating speed, environment temperature, coil pipe temperature and the like, and the response data comprises a plurality of bytes of data corresponding to machine types, actual compressor operation frequency, protection states, coil pipe temperature, environment temperature, circuit parameters and the like. In this way, during the communication process, the detection tool receiving the command data and the response data can also acquire the data of the bytes. Therefore, preferably, the inverter air conditioner fault detection tool disclosed in this embodiment further includes a third fault diagnosis module, and the third fault diagnosis module stores a sensor parameter threshold. During communication, the third fault diagnosis module extracts sensor real-time parameters in the command data and/or the response data and compares the sensor real-time parameters with sensor parameter thresholds. And if the real-time parameters of the sensors in the data set exceed the sensor parameter threshold values, the third fault diagnosis module outputs sensor fault signals and displays the sensor fault signals through the display module. The sensor parameter thresholds in the third fault diagnosis module preferably include an indoor coil temperature threshold, an outdoor coil temperature threshold, and an outdoor ambient temperature threshold. The probability of failure of these three temperature sensors is relatively high, limited by the mounting location. On the premise that the data processing capacity of the detection tool is improved, parameter thresholds of more groups of sensors can be set so as to monitor the hardware working state of the air conditioner.
A driving module is further arranged in the detection tool. When the first communication state detection unit 101-1 generates a master failure signal, the driving module outputs a first driving instruction to the slave device, and the slave device receives the first driving instruction and controls a component corresponding to the first driving instruction to work. For example, the driving module outputs a first driving instruction to a fan in the indoor unit or the outdoor unit, and the fan acts according to a specified wind speed after receiving the first driving instruction, that is, in a state of communication failure, the working state of a certain component in the air conditioner can be detected through the detection tool, so that the function of the detection tool is expanded. Similarly, when the second communication state detection unit 102-1 generates a slave device failure signal, the driving module outputs a second driving instruction to the master device, the master device receives the second instruction and controls the corresponding component to operate, and the second driving instruction may also control one of the components such as the fan and the display device to detect the operating state thereof.
By adopting the detection tool for the variable frequency air conditioner, when the air conditioner has a communication fault code, the fault point can be automatically judged by the first fault diagnosis module and the second fault diagnosis module respectively, so that automatic detection is realized. The method has the advantages of good universality and high intelligent degree.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides a frequency conversion air conditioner fault detection frock which characterized in that includes:
the first fault diagnosis module comprises a first communication state detection unit and a first communication unit, wherein the first communication state detection unit is used for judging the communication state of the master device according to a clock signal and command data, and the first communication unit is used for outputting test data to the slave device according to the communication state of the master device; the first fault diagnosis module further comprises a first clock, and a first effective preset value is stored in the first clock; when the timing duration of the first clock is less than or equal to a first effective preset value, if the first communication state detection unit judges that command data are received, the first communication unit outputs the received command data as test data to slave equipment for multiple times according to a fixed period, and the first communication state detection unit generates a normal signal of the master equipment; if the first communication state detection unit judges that the command data is not received, the first communication unit generates test data and outputs the test data to the slave equipment for multiple times according to a fixed period; and
the second fault diagnosis module comprises a second communication state detection unit and a second communication unit, wherein the second communication unit is used for inputting response data; the second communication state detection unit is used for judging the communication state of the slave device according to the clock signal and the response data; the second fault diagnosis module further comprises a second clock, and a second effective preset value is stored in the second clock; when the timing duration of the second clock is less than or equal to a second effective preset value, if the second communication state detection unit judges that response data input through the second communication unit is received, the first communication unit stops outputting test data to the slave equipment, and the second communication state detection unit generates a normal signal of the slave equipment; if the second communication state detection unit determines that the response data is not received, the second communication state detection unit generates a slave device failure signal.
2. The inverter air conditioner fault detection tool of claim 1, further comprising:
the display module receives and displays a master equipment fault signal output by the first communication state detection unit or a slave equipment fault signal output by the second communication state detection unit; if the first communication state detection unit judges that the command data is not received, the first communication state detection unit generates a main equipment fault signal and outputs the main equipment fault signal to the display module; and if the second communication state detection unit judges that the response data is not received, the second communication state detection unit outputs a slave equipment fault signal to the display module.
3. The inverter air conditioner fault detection tool of claim 1, wherein,
the system also comprises a third fault diagnosis module, wherein a sensor parameter threshold value is stored in the third fault diagnosis module, the third fault diagnosis module extracts a sensor real-time parameter in the command data and/or the response data, compares the sensor real-time parameter with the sensor parameter threshold value, and outputs a sensor fault signal if the sensor real-time parameter exceeds the sensor parameter threshold value.
4. The inverter air conditioner fault detection tool of claim 3, wherein,
the sensor parameter thresholds include an indoor coil temperature threshold, an outdoor coil temperature threshold, and an outdoor ambient temperature threshold.
5. The inverter air conditioner fault detection tool of claim 1, wherein,
the device further comprises a driving module, when the first communication state detection unit generates a master equipment fault signal, the driving module outputs a first driving instruction to the slave equipment, and the slave equipment receives the first driving instruction and controls the corresponding component to work; when the second communication state detection unit generates a slave device fault signal, the driving module outputs a second driving instruction to the master device, and the master device receives the second driving instruction and controls the corresponding component to work.
6. The inverter air conditioner fault detection tool of claim 1, wherein,
the fault detection tool of the variable frequency air conditioner is connected in series between an indoor unit and an outdoor unit of the air conditioner.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101706144A (en) * | 2009-11-05 | 2010-05-12 | 宁波奥克斯空调有限公司 | Method for judging communication failures of indoor unit and outdoor unit of varied-frequency air conditioner |
| 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 |
| CN104214902A (en) * | 2014-09-25 | 2014-12-17 | 中国扬子集团滁州扬子空调器有限公司 | Out-of-communication control method of outdoor unit of inverter air conditioner |
| CN104748300A (en) * | 2015-02-27 | 2015-07-01 | 青岛海尔空调器有限总公司 | Air conditioner fault auxiliary rapid diagnosis control method |
| CN105823168A (en) * | 2016-03-11 | 2016-08-03 | 广东美的暖通设备有限公司 | Protection method for communication module and air conditioner |
| CN105864964A (en) * | 2016-04-01 | 2016-08-17 | 广东美的暖通设备有限公司 | Fault handling method and device for air conditioner and air conditioner |
| CN106016582A (en) * | 2016-05-16 | 2016-10-12 | 珠海格力电器股份有限公司 | Air-conditioner fault self-examining method, tool and device |
| CN106288189A (en) * | 2016-08-17 | 2017-01-04 | 刘华英 | Air-conditioning fault detection method and device |
| CN106524392A (en) * | 2016-09-22 | 2017-03-22 | 深圳麦格米特电气股份有限公司 | Operation method of variable frequency air conditioner in communication failure of indoor and outdoor units |
| CN107741078A (en) * | 2017-09-28 | 2018-02-27 | 广东美的制冷设备有限公司 | Detection means and detection method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001344013A (en) * | 2000-06-05 | 2001-12-14 | Zexel Valeo Climate Control Corp | Diagnostic method for failure of on-vehicle equipment |
| CN200969148Y (en) * | 2006-09-30 | 2007-10-31 | 海信集团有限公司 | Indoor set of air-conditioner communication detecting apparatus |
| JP2009079811A (en) * | 2007-09-26 | 2009-04-16 | Sanyo Electric Co Ltd | Air conditioning system and indoor unit |
| CN105978755B (en) * | 2016-05-16 | 2019-06-11 | 珠海格力电器股份有限公司 | Air-conditioning communication failure detection device and method |
| CN108131777A (en) * | 2017-12-05 | 2018-06-08 | 广东美的制冷设备有限公司 | Air conditioner detection device |
-
2018
- 2018-07-06 CN CN201810737416.XA patent/CN110687364B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101706144A (en) * | 2009-11-05 | 2010-05-12 | 宁波奥克斯空调有限公司 | Method for judging communication failures of indoor unit and outdoor unit of varied-frequency air conditioner |
| 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 |
| CN104214902A (en) * | 2014-09-25 | 2014-12-17 | 中国扬子集团滁州扬子空调器有限公司 | Out-of-communication control method of outdoor unit of inverter air conditioner |
| CN104748300A (en) * | 2015-02-27 | 2015-07-01 | 青岛海尔空调器有限总公司 | Air conditioner fault auxiliary rapid diagnosis control method |
| CN105823168A (en) * | 2016-03-11 | 2016-08-03 | 广东美的暖通设备有限公司 | Protection method for communication module and air conditioner |
| CN105864964A (en) * | 2016-04-01 | 2016-08-17 | 广东美的暖通设备有限公司 | Fault handling method and device for air conditioner and air conditioner |
| CN106016582A (en) * | 2016-05-16 | 2016-10-12 | 珠海格力电器股份有限公司 | Air-conditioner fault self-examining method, tool and device |
| CN106288189A (en) * | 2016-08-17 | 2017-01-04 | 刘华英 | Air-conditioning fault detection method and device |
| CN106524392A (en) * | 2016-09-22 | 2017-03-22 | 深圳麦格米特电气股份有限公司 | Operation method of variable frequency air conditioner in communication failure of indoor and outdoor units |
| CN107741078A (en) * | 2017-09-28 | 2018-02-27 | 广东美的制冷设备有限公司 | Detection means and detection method |
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