CN109696628A - Fault detection tooling and fault detection method for compressor of air conditioner - Google Patents
Fault detection tooling and fault detection method for compressor of air conditioner Download PDFInfo
- Publication number
- CN109696628A CN109696628A CN201811476934.7A CN201811476934A CN109696628A CN 109696628 A CN109696628 A CN 109696628A CN 201811476934 A CN201811476934 A CN 201811476934A CN 109696628 A CN109696628 A CN 109696628A
- Authority
- CN
- China
- Prior art keywords
- compressor
- detection
- module
- fault detection
- current
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Air Conditioning Control Device (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The present invention provides a kind of fault detection toolings for compressor of air conditioner, it is characterized in that, the fault detection tooling includes: detection module, it is connected to the compressor of air conditioner, including current/voltage value detection module, current/voltage waveform detection module and resistance value detection module, for obtaining detection data；Main control module is connected to the detection module, for the diagnosis of design data and detection data progress compressor fault in conjunction with air-conditioning and compressor, and the detection data and diagnostic result is exported；Data input/output module is connected to the main control module, for reading the design data of air-conditioning and compressor, and exports detection data and diagnostic result.Fault detection tooling integral compressor machine winding resistance measurement of the present invention for compressor of air conditioner, current/voltage detect, current/voltage waveforms detection function, and electrical parameter can be detected in compressor operation, realizes live detection.
Description
Technical field
The present invention relates to compressor of air conditioner fault detection technique field, in particular to a kind of failure for compressor of air conditioner
Detecting tool and fault detection method.
Background technique
The detection of current compressor of air conditioner has difficulties, when the air conditioner for being installed on user room breaks down, by
It is difficult to detect in compressor fault, maintenance personal often tests and analyzes without careful, just directly replaces compressor, causes sometimes
Good compressor directly is replaced, and causes to waste.Since currently without dedicated compressor detecting tool, maintenance personal is logical
Often need to carry the equipment such as resistance measuring instrument, current/voltage value measuring instrument, oscillograph, it is very inconvenient, and existing detection mode
It needs compressor of air conditioner to shut down detection, and needs to compressor input test signal to be detected.
Summary of the invention
In view of this, the present invention is directed to propose a kind of fault detection tooling for compressor of air conditioner, to realize compressor
Online fault detection.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of fault detection tooling for compressor of air conditioner, the fault detection tooling include:
Detection module is connected to the compressor of air conditioner, including the inspection of current/voltage value detection module, current/voltage waveform
Module and resistance value detection module are surveyed, for obtaining detection data；
Main control module is connected to the detection module, for the design data and the detection in conjunction with air-conditioning and compressor
Data carry out the diagnosis of compressor fault, and the detection data and diagnostic result are exported；
Data input/output module is connected to the main control module, for reading the design data of air-conditioning and compressor,
And export detection data and diagnostic result.
Further, in the detection module, the resistance value detection module is surveyed for compressor electric motor winding resistance
Amount, wherein the resistance value is for judging compressor electric motor winding with the presence or absence of short circuit or open circuit；
Detection of the current/voltage value detection module for electric current and/or voltage value on compressor electric motor winding, wherein described
Electric current and/or voltage value leak inside compressor with the presence or absence of impurity or cylinder for judging.
Current/voltage waveform detection module is used for the detection of compressor electric motor winding current and/or voltage waveform, wherein institute
Electric current and/or voltage waveform are stated for judging air conditioner control circuit with the presence or absence of abnormal.
Further, the data input/output module includes serial communication module, wireless network communication module or bluetooth
At least one of communication module.
Further, the fault detection tooling further includes data memory module, and the data memory module is used for inspection
The data and diagnostic result of survey are stored；Or
The fault detection tooling connects peripheral data storage unit by the data input/output module.
Further, the fault detection tooling further includes display function module, for the detection data and diagnosis
As a result it is shown；Alternatively,
The fault detection tooling further includes display communication interface, for connecting external display, is shown to result
Show.
Further, the fault detection tooling further includes power supply circuit, and the power supply circuit connects power supply, and is connected to
The detection module, air-conditioner controller and compressor of air conditioner are used for the detection module, air-conditioner controller and compressor of air conditioner
Power supply.
Further, fault detection tooling includes power supply interface, is powered by external power supply, wherein
The power supply interface includes voltage conversion device, for alternating current to be converted into the DC operation electricity of the fault detection
Pressure；Alternatively,
The external power supply is the power supply module of air-conditioner controller, and the power supply interface is for being connected to the airconditioning control
The power supply module of device.
Compared with the existing technology, the fault detection tooling of the present invention for compressor of air conditioner has the advantage that
Fault detection tooling integral compressor machine winding resistance measurement of the present invention for compressor of air conditioner
Function, current/voltage detection function, current/voltage waveforms detection function, can be realized Compressor Fault Diagnosis, can press
Contracting machine detects electrical parameter when operating, realize live detection function.
Another object of the present invention is to propose a kind of fault detection method for compressor of air conditioner, to realize compressor
Online fault detection.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of fault detection method for compressor of air conditioner, it is described to be used for using foregoing fault detection tooling
The fault detection method of compressor of air conditioner includes:
The resistance value of machine winding when S1, detection compressor operation, if resistance value is more many times larger than normal value or is unlimited
Greatly, then determine that compressor electric motor is burnt, winding open circuit；If resistance value is smaller than normal value or is zero, determine compressor electric motor around
Group short circuit；
The current value of machine winding when S2, detection inner compressor operating, or detect voltage value and obtain current value, if motor
The current value of winding becomes larger, then determines that there are impurity inside compressor, cause torque to become larger；If the current value of machine winding becomes
It is small, then determine that compresser cylinder has leakage；
S3, detection inner compressor operating when machine winding current waveform and/or voltage waveform, if current waveform and/or
Voltage waveform is abnormal, then determines air conditioner control circuit exception.
Further, it before the step S1, further comprises the steps of:
S0, the machine winding of the compressor under operating condition and fault detection tooling are electrically connected.
The fault detection method for compressor of air conditioner and the above-mentioned fault detection tooling phase for compressor of air conditioner
Identical for advantage possessed by the prior art, details are not described herein.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the interface diagram described in the embodiment of the present invention for the fault detection tooling of compressor of air conditioner；
Fig. 2 is the structural schematic diagram described in the embodiment of the present invention for the fault detection tooling of compressor of air conditioner.
Fig. 3 is the structural schematic diagram described in another embodiment of the present invention for the fault detection tooling of compressor of air conditioner.
Fig. 4 is the flow chart described in the embodiment of the present invention for the fault detection method of compressor of air conditioner.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
In an exemplary embodiment of the present invention, a kind of fault detection tooling for compressor of air conditioner is provided.
Fig. 2 is interface diagram of the embodiment of the present invention for the fault detection tooling of compressor of air conditioner, as shown in Figure 1, of the invention
Compressor detecting tool has two connecting lines, and one connect with air-conditioner controller, and one connect with compressor of air conditioner, thus
Obtain the electrical parameter of compressor of air conditioner operation.It is, moreover, an optional that having electric power connection line, power to tooling；If with one or
Dry data-interface can exchange data with external equipment.
Fig. 2 is structural schematic diagram of the embodiment of the present invention for the fault detection tooling of compressor of air conditioner.As shown in Fig. 2,
The present embodiment for compressor of air conditioner fault detection tooling include: detection module, main control module, data input/output module,
Data memory module, display function module and power supply circuit.
The detection module is connected to the main control module, and the main control module connection data memory module, data input/
Output module and display function module, the power supply circuit connects power supply, and powers to the detection module, meanwhile, the confession
Circuit is also connected to air-conditioner controller and compressor of air conditioner, for being powered to air-conditioner controller and compressor of air conditioner.
Wherein detection module includes: current/voltage value detection module, current/voltage waveform detection module and resistance value inspection
Module is surveyed, is respectively used to detection compressor current/voltage value, current/voltage waveform and machine winding resistance value, and data are defeated
Enter main control module.
The main control module has data processing, computing function, can be from data memory module and data input/output mould
Block reads the design data of air-conditioning and compressor, and combines detection data to carry out the diagnosis of basic fault, and by data and diagnosis
As a result data memory module, data input/output module and display function module are output to.
The data memory module is for storing the data and diagnostic result of detection；The data input/output
Module is for exporting data and diagnostic result, and data input/output module is also used to receive external data, and passes
Transport to main control module.Data input/output module can be connect by cable with external equipment, at this time one end connection of connecting line
The data-interface of fault detection tooling data input/output module, the other end connect external equipment.The fault detection tooling
It can be connected by wireless network, bluetooth and external equipment.
The display function module is used to carry out real-time display to data and diagnostic result, and maintenance personal can be directly from tooling
Upper reading compressor parameter, thus more accurate judgement fault type.
When compressor of air conditioner breaks down, usually there are following several situations:
1, compressor electric motor is burnt, winding open circuit, and resistance value is more many times larger than normal value or is infinity；
2, compressor electric motor winding short circuit, resistance value is smaller than normal value or is zero；
3, there are impurity inside compressor, and torque is caused to become larger, and current of electric becomes larger；
4, there is leakage in compresser cylinder, be unable to positive normal pressure contraction cryogen, current of electric becomes smaller；
5, air conditioner control circuit leads to compressor current Wave anomaly extremely.
Therefore, detecting tool integral compressor machine winding resistance measurement function of the invention, current/voltage detect function
Energy, current/voltage waveforms detection function realize Basic Troubleshooting function.
Specifically, the resistance value detection module in the detection module is for realizing resistance measurement function, for judging
Above-mentioned 1st kind of situation: if resistance value is more many times larger than normal value or is infinity, main control module judges that compressor electric motor is burnt
It ruins, winding open circuit；And the 2nd kind of situation: if resistance value is smaller than normal value or is zero, main control module judges compressor electric motor winding
Short circuit.
Current/voltage value detection module in the detection module is for realizing current/voltage value detection function, for sentencing
Break the above-mentioned 3rd, 4 kind of situation: if current of electric becomes larger, main control module judges that there are impurity inside compressor, cause torque to become
Greatly；If current of electric becomes smaller, main control module judges that compresser cylinder has leakage, is unable to positive normal pressure contraction cryogen.
Current/voltage waveform detection module in the detection module is used for for realizing current/voltage value detection function
Judge above-mentioned 5th kind of situation: if compressor current waveform has exception, main control module judges air conditioner control circuit exception.
In another exemplary embodiment of the invention, a kind of fault detection work for compressor of air conditioner is provided
Dress.Fig. 3 is structural schematic diagram of the another embodiment of the present invention for the fault detection tooling of compressor of air conditioner.As shown in figure 3, this
Fault detection tooling of the embodiment for compressor of air conditioner includes: detection module, main control module, data input/output module.
The detection module is connected to the main control module and compressor of air conditioner, and the main control module connection data input/
Output module.
Wherein detection module includes: current/voltage value detection module, current/voltage waveform detection module and resistance value inspection
Module is surveyed, is respectively used to detection compressor current/voltage value, current/voltage waveform and machine winding resistance value, and data are defeated
Enter main control module.
The main control module has data processing, computing function, can be from data memory module and data input/output mould
Block reads the design data of air-conditioning and compressor, and combines detection data to carry out the diagnosis of basic fault, and by data and diagnosis
As a result data memory module, data input/output module and display function module are output to.
The data input/output module may include serial communication module, wireless network communication module or Bluetooth communication
Module, such as USB transmission module or Zigbee module.In one embodiment, when carrying out compression machine testing, external data is deposited
Storage unit is carried out data transmission by the data input/output module with main control module.In other embodiments, the master control
Module can also be carried out data transmission and be shown with intelligent terminal by the data input/output module, further, the intelligence
Can terminal data storage function can also be provided, for detection data and diagnostic result store.The intelligent terminal packet
Include smart phone, tablet computer etc..
Still optionally further, the fault detection tooling can also include display communication interface, external aobvious for connecting
Show device, result is shown.
Still optionally further, the fault detection tooling has power supply interface, is powered by external power supply.It is real one
It applies in example, the external power supply is alternating current, and the power supply interface includes voltage conversion device, for alternating current to be converted into the event
Hinder the direct-current working volts of detection.In other embodiments, the external power supply is the power supply module of air-conditioner controller, the confession
Electrical interface is used to be connected to the power supply module of the air-conditioner controller.
In another exemplary embodiment of the invention, a kind of fault detection side for compressor of air conditioner is provided
Method.Fig. 4 is flow chart of the embodiment of the present invention for the fault detection method of compressor of air conditioner.As shown in figure 4, described for sky
Adjust compressor fault detection method include:
The resistance value of machine winding when S1, detection compressor operation, if resistance value is more many times larger than normal value or is unlimited
Greatly, then determine that compressor electric motor is burnt, winding open circuit；If resistance value is smaller than normal value or is zero, determine compressor electric motor around
Group short circuit；
The current value of machine winding when S2, detection inner compressor operating, or detect voltage value and obtain current value, if motor
The current value of winding becomes larger relative to the design reference value of compressor, then determines that there are impurity inside compressor, cause torque to become
Greatly；If the current value of machine winding becomes smaller relative to the design reference value of compressor, determine that compresser cylinder has leakage, no
It can positive normal pressure contraction cryogen；
S3, detection inner compressor operating when machine winding current waveform and/or voltage waveform, if current waveform and/or
Voltage waveform is abnormal, then determines air conditioner control circuit exception.
Before the step S1, further comprise the steps of:
S0, the machine winding of the compressor under operating condition and fault detection tooling are electrically connected.
In order to achieve the purpose that brief description, any technical characteristic for making same application is described all simultaneously in above-described embodiment
In this, without repeating identical narration.
Fault detection tooling and fault detection method for compressor of air conditioner of the invention, be integrated with compressor electric motor around
Group resistance measurement function, current/voltage detection function, current/voltage waveforms detection function basic fault detection function, maintenance
Personnel's energy direct-on-line obtains compressor parameter, more accurate judgement fault type.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of fault detection tooling for compressor of air conditioner, which is characterized in that the fault detection tooling includes:
Detection module is connected to the compressor of air conditioner, including current/voltage value detection module, current/voltage waveforms detection mould
Block and resistance value detection module, for obtaining detection data；
Main control module is connected to the detection module, for the design data and the detection data in conjunction with air-conditioning and compressor
The diagnosis of compressor fault is carried out, and the detection data and diagnostic result are exported；
Data input/output module is connected to the main control module, for reading the design data of air-conditioning and compressor, and it is defeated
Detection data and diagnostic result out.
2. fault detection tooling according to claim 1, which is characterized in that in the detection module, the resistance value inspection
It surveys module to measure for compressor electric motor winding resistance, wherein the resistance value is for judging whether compressor electric motor winding is deposited
In short circuit or open circuit；
Detection of the current/voltage value detection module for electric current and/or voltage value on compressor electric motor winding, wherein the electric current
And/or voltage value leaks inside compressor with the presence or absence of impurity or cylinder for judging.
Detection of the current/voltage waveform detection module for compressor electric motor winding current and/or voltage waveform, wherein the electricity
Stream and/or voltage waveform are for judging air conditioner control circuit with the presence or absence of abnormal.
3. fault detection tooling according to claim 2, which is characterized in that the data input/output module includes string
At least one of row communication module, wireless network communication module or bluetooth communication.
4. fault detection tooling according to claim 2, which is characterized in that
The fault detection tooling further includes data memory module, and the data memory module is used for data and diagnosis to detection
As a result it is stored；Or
The fault detection tooling connects peripheral data storage unit by the data input/output module.
5. fault detection tooling according to claim 2, which is characterized in that
The fault detection tooling further includes display function module, for showing to the detection data and diagnostic result；
Alternatively,
The fault detection tooling further includes display communication interface, for connecting external display, is shown to result.
6. fault detection tooling according to claim 2, which is characterized in that the fault detection tooling further includes power supply electricity
Road, the power supply circuit connects power supply, and is connected to the detection module, air-conditioner controller and compressor of air conditioner, is used for institute
State detection module, air-conditioner controller and compressor of air conditioner power supply.
7. fault detection tooling according to claim 2, which is characterized in that fault detection tooling includes power supply interface, is led to
External power supply is crossed to be powered, wherein
The power supply interface includes voltage conversion device, for alternating current to be converted into the direct-current working volts of the fault detection；
Alternatively,
The external power supply is the power supply module of air-conditioner controller, and the power supply interface is for being connected to the air-conditioner controller
Power supply module.
8. a kind of fault detection method for compressor of air conditioner, using such as described in any item fault detections of claim 1-7
Tooling, which is characterized in that the fault detection method for compressor of air conditioner includes:
The resistance value of machine winding when detecting compressor operation is sentenced if resistance value is more many times larger than normal value or is infinity
The electromechanical machine burning of level pressure contracting is ruined, winding open circuit；If resistance value is smaller than normal value or is zero, compressor electric motor winding short circuit is determined；
The current value of machine winding when detecting inner compressor operating, or detect voltage value and obtain current value, if machine winding
Current value becomes larger, then determines that there are impurity inside compressor, cause torque to become larger；If the current value of machine winding becomes smaller, sentence
Determine compresser cylinder and there is leakage；
The current waveform and/or voltage waveform of machine winding when detecting inner compressor operating, if current waveform and/or voltage waveform
It is abnormal, then determine air conditioner control circuit exception.
9. fault detection method according to claim 8, which is characterized in that before carrying out compression machine testing, further include
Step:
The machine winding of compressor under operating condition and fault detection tooling are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811476934.7A CN109696628B (en) | 2018-12-04 | 2018-12-04 | Fault detection tool and fault detection method for air conditioner compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811476934.7A CN109696628B (en) | 2018-12-04 | 2018-12-04 | Fault detection tool and fault detection method for air conditioner compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109696628A true CN109696628A (en) | 2019-04-30 |
| CN109696628B CN109696628B (en) | 2022-09-30 |
Family
ID=66230413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811476934.7A Active CN109696628B (en) | 2018-12-04 | 2018-12-04 | Fault detection tool and fault detection method for air conditioner compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109696628B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987501A (en) * | 2019-12-18 | 2020-04-10 | 广东合立鼎峰科技有限公司 | Full-automatic online intelligent detection method for air conditioner |
| CN111765102A (en) * | 2020-05-26 | 2020-10-13 | 稳力(广东)科技有限公司 | Fault diagnosis and protection system of air compressor for fuel cell system |
| CN113324776A (en) * | 2021-04-25 | 2021-08-31 | 安徽嘉乐斯乐净化工程有限公司 | Detection device and detection method for air conditioning unit |
| CN113757093A (en) * | 2021-10-14 | 2021-12-07 | 中国海洋石油集团有限公司 | Fault diagnosis method for flash steam compressor unit |
| CN114076687A (en) * | 2020-08-18 | 2022-02-22 | 合肥通用制冷设备有限公司 | Air conditioner fault detection device and air conditioner fault detection equipment |
| CN116224154A (en) * | 2023-03-02 | 2023-06-06 | 湖南贝特新能源科技有限公司 | Short circuit detection tool and detection method for compressor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062458A (en) * | 2010-11-29 | 2011-05-18 | 青岛海信日立空调系统有限公司 | Method for carrying out fault judgment and shutdown control on air conditioning compressor |
| CN105971867A (en) * | 2016-05-04 | 2016-09-28 | 珠海格力电器股份有限公司 | Detection method and device for fault of compressor |
| CN106121980A (en) * | 2016-06-29 | 2016-11-16 | 珠海格力电器股份有限公司 | Determination method, device and the refrigeration system of a kind of compressor extent of deterioration |
| CN108088051A (en) * | 2017-12-01 | 2018-05-29 | 芜湖美智空调设备有限公司 | Fault detection method, air conditioner and the storage medium of cooler compressor |
-
2018
- 2018-12-04 CN CN201811476934.7A patent/CN109696628B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062458A (en) * | 2010-11-29 | 2011-05-18 | 青岛海信日立空调系统有限公司 | Method for carrying out fault judgment and shutdown control on air conditioning compressor |
| CN105971867A (en) * | 2016-05-04 | 2016-09-28 | 珠海格力电器股份有限公司 | Detection method and device for fault of compressor |
| CN106121980A (en) * | 2016-06-29 | 2016-11-16 | 珠海格力电器股份有限公司 | Determination method, device and the refrigeration system of a kind of compressor extent of deterioration |
| CN108088051A (en) * | 2017-12-01 | 2018-05-29 | 芜湖美智空调设备有限公司 | Fault detection method, air conditioner and the storage medium of cooler compressor |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987501A (en) * | 2019-12-18 | 2020-04-10 | 广东合立鼎峰科技有限公司 | Full-automatic online intelligent detection method for air conditioner |
| CN110987501B (en) * | 2019-12-18 | 2021-09-10 | 广东合立鼎峰科技有限公司 | Full-automatic online intelligent detection method for air conditioner |
| CN111765102A (en) * | 2020-05-26 | 2020-10-13 | 稳力(广东)科技有限公司 | Fault diagnosis and protection system of air compressor for fuel cell system |
| CN111765102B (en) * | 2020-05-26 | 2021-04-30 | 稳力(广东)科技有限公司 | Fault diagnosis and protection system of air compressor for fuel cell system |
| CN114076687A (en) * | 2020-08-18 | 2022-02-22 | 合肥通用制冷设备有限公司 | Air conditioner fault detection device and air conditioner fault detection equipment |
| CN113324776A (en) * | 2021-04-25 | 2021-08-31 | 安徽嘉乐斯乐净化工程有限公司 | Detection device and detection method for air conditioning unit |
| CN113757093A (en) * | 2021-10-14 | 2021-12-07 | 中国海洋石油集团有限公司 | Fault diagnosis method for flash steam compressor unit |
| CN116224154A (en) * | 2023-03-02 | 2023-06-06 | 湖南贝特新能源科技有限公司 | Short circuit detection tool and detection method for compressor |
| CN116224154B (en) * | 2023-03-02 | 2023-12-05 | 湖南贝特新能源科技有限公司 | Short circuit detection tool and detection method for compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109696628B (en) | 2022-09-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109696628A (en) | Fault detection tooling and fault detection method for compressor of air conditioner | |
| CN111459138B (en) | Turnout fault testing system | |
| CN107942251A (en) | Current detection system, method and current detection device | |
| CN100474729C (en) | Real time monitoring system for static detection | |
| CN106199253A (en) | A kind of high voltage transducer power unit remote fault diagnosis method | |
| CN106249099B (en) | Voltage acquisition line open-circuit fault detection device and method and battery management system | |
| CN107294492A (en) | The fault detect alignment system of battery panel in a kind of large-sized photovoltaic array | |
| CN106199252A (en) | A kind of high voltage transducer power unit remote failure diagnosis system | |
| CN112526334A (en) | Method and device for detecting state of direct current power transmission and distribution isolating switch based on digital twin system | |
| CN108872852A (en) | A kind of wind-driven generator fault diagnosis system and method | |
| CN104135041A (en) | Diagnosis method and diagnosis equipment of battery cell | |
| CN109507632A (en) | A kind of monitoring system and monitoring method for electric energy meter detecting system | |
| CN205829450U (en) | A kind of high voltage transducer power unit and cascaded high-voltage frequency converter | |
| CN205941032U (en) | Air conditioner divides internal quick -witted commodity inspection system | |
| CN108152734A (en) | A kind of test system and test method for the maintenance of valve class | |
| CN106768018A (en) | Site installs the on-line monitoring and diagnostic system and method for second power equipment | |
| CN204882853U (en) | Electric energy meter pressure resistance test installation | |
| WO2024011801A1 (en) | Thyristor voltage monitoring board testing system and method | |
| CN214843978U (en) | Detection device | |
| CN210272192U (en) | Intelligent contactor | |
| CN213688949U (en) | Vacuum generator performance testing device | |
| CN108361020A (en) | Underground drill rig diagnosis protective device and method based on virtual instrument | |
| CN210181038U (en) | Simple engine oil quality detection device | |
| CN208588810U (en) | A kind of nuclear power station emergency diesel dynamo monitoring device and system | |
| CN107238783A (en) | A kind of transformer monitoring systems and monitoring method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |