CN201795922U - Automobile air conditioner failure detector - Google Patents
Automobile air conditioner failure detector Download PDFInfo
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- CN201795922U CN201795922U CN2010201767889U CN201020176788U CN201795922U CN 201795922 U CN201795922 U CN 201795922U CN 2010201767889 U CN2010201767889 U CN 2010201767889U CN 201020176788 U CN201020176788 U CN 201020176788U CN 201795922 U CN201795922 U CN 201795922U
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Abstract
The utility model provides an automobile air conditioner failure detector, which comprises a microprocessor, a signal conversion circuit, a temperature sensing circuit, a pressure sensing circuit, a humidity sensing circuit, an input and output device and a power management device. The signal conversion circuit is connected with the microprocessor, the temperature sensing circuit, the pressure sensing circuit and the humidity sensing circuit are connected with the signal conversion circuit, the input and output device is connected with the microprocessor, the power management device is connected with the microprocessor, and the temperature sensing circuit, the pressure sensing circuit and the humidity sensing circuit transmit analog signals to the signal conversion circuit for conversion to obtain digital signals to be transmitted to the microprocessor. The automobile air conditioner failure detector with the technical scheme can measure temperatures at the position of all components of an air conditioning system, environmental temperature and humidity, temperature at an air outlet and high and low pressure, and can rapidly and accurately determine failure of the air conditioning system.
Description
Technical field
The utility model relates to air conditioning for automobiles maintenance field, particularly a kind of air conditioning for automobiles fault locator.
Background technology
In the air conditioning for automobiles maintenance industry, detect and judge that the air conditioning for automobiles fault adopts pointer refrigerant tensimeter to carry out at present.
But this kind detects determination methods following shortcoming is arranged: the high-low pressure fast interface place that can only be connected on automotive air-conditioning system soon in succession by the manometric high-low pressure of refrigerant, by starting air-conditioning system, the high-low pressure pressure of observing system, the maintenance personal can only rely on service experience to judge the fault of the existence of air conditioning for automobiles, and this judgement can only be judged a kind of fault of air conditioning for automobiles.Can't accurately judge other common and uncommon failure and special.Unnecessary parts can only constantly be dismantled or change to the fault that can't accurately judge.Caused some normal parts to be replaced like this, it is many more to have caused air conditioning for automobiles to repair fault more, has not only increased maintenance cost, and has caused the waste of resource.
In addition,, can only judge what of refrigerant, can not judge whether refrigeration oil is sufficient, can only provide the reference of annotating not too accurately for the filling refrigerant like this by tensimeter.And the refrigeration oil of can't annotating accurately, though the refrigerant in the air-conditioning system is sufficient, the refrigeration oil of compressor is also extremely important, air-conditioning system is moved under the state of no oil or oil starvation, can aggravate the damage of system compresses machine.
Therefore, in carrying out the utility model creation process, the inventor finds that there are the following problems at least in the prior art: prior art adopts pointer refrigerant tensimeter to detect the air conditioning for automobiles fault, can only judge the fault of the refrigerant pressure of air conditioning for automobiles, can't accurately judge other faults.
The utility model content
In view of this, the utility model embodiment has proposed a kind of air conditioning for automobiles fault locator, can detect fast the various faults of air-conditioning system and accurately judgement.
For solving the problems of the technologies described above, the purpose of the utility model embodiment is achieved through the following technical solutions:
The utility model provides a kind of air conditioning for automobiles fault locator, comprise microprocessor, the signaling conversion circuit that links to each other with microprocessor, the temperature sensing circuit that links to each other with signaling conversion circuit, pressure sensor circuit, humidity sensor circuit, input-output device that links to each other with microprocessor and the power supply management device that links to each other with microprocessor, described temperature sensing circuit, pressure sensor circuit, humidity sensor circuit send to signaling conversion circuit with simulating signal and are converted to digital signal, and send to microprocessor.
The air conditioning for automobiles fault locator that the utility model provides, can measure temperature, environment temperature and humidity, air outlet temperature, the high-low pressure pressure at each parts place of air-conditioning system, therefore can judge the fault of air-conditioning system fast and accurately, and keep in repair according to information.
Description of drawings
Fig. 1 is the circuit theory diagrams of the utility model air conditioning for automobiles fault locator.
Embodiment
The utility model embodiment provides a kind of air conditioning for automobiles fault locator.
Described air conditioning for automobiles fault locator comprises microprocessor, the signaling conversion circuit that links to each other with microprocessor, the temperature sensing circuit that links to each other with signaling conversion circuit, pressure sensor circuit, humidity sensor circuit, input-output device that links to each other with microprocessor and the power supply management device that links to each other with microprocessor, described temperature sensing circuit, pressure sensor circuit, humidity sensor circuit send to signaling conversion circuit with simulating signal and are converted to digital signal, and send to microprocessor.
For making the technical solution of the utility model clearer, below with reference to accompanying drawing and enumerate embodiment, the utility model is further described.
See also Fig. 1, be the circuit theory diagrams of the utility model air conditioning for automobiles fault locator.
Described air conditioning for automobiles fault locator comprises a microprocessor 10, a plurality of signaling conversion circuits 20 that link to each other with microprocessor 10, the input-output device 30 that links to each other with microprocessor 10, the data-carrier store 40 that links to each other with microprocessor 10 and voltage detecting equipment 50 that links to each other with microprocessor 10 and power supply management device 60.
Described input-output device 30 comprises by key inputting device and liquid crystal drive and LCD, the user can carry out various work by operate little processing 10 by key inputting device, the duty by the current microprocessor 10 of liquid crystal display displays and fault detect result or the like.
Described power supply management device 60 provides operating voltage for microprocessor 10.
The input voltage of described voltage detecting equipment 50 is 9V, and whether the voltage that is used to detect microprocessor is stable.Described data-carrier store 40 is used for storing the various data of little processing.
Described signaling conversion circuit 20 is temperature sensing circuit 70 in parallel, pressure sensor circuit 80, humidity sensor circuit 90 respectively.
Described pressure sensor circuit 80 comprises high pressure sensor and low pressure sensor, and the output terminal of described high pressure sensor and low pressure sensor links to each other with described signaling conversion circuit 20 respectively.
Described temperature sensing circuit 70 comprises high pressure temperature sensor and low pressure temperature sensor, and the output terminal of described high pressure, low pressure temperature sensor links to each other with described signaling conversion circuit 20.Described temperature sensing circuit 70 also comprises non-be environment temperature sensor and air-conditioner air outlet temperature sensor, and the output terminal of described temperature sensor links to each other with signaling conversion circuit 20.
Described humidity sensor circuit 90 comprises humidity sensor, and the output terminal of described humidity sensor links to each other with signaling conversion circuit 20.
In the present embodiment, described signaling conversion circuit 20 has three, and each signaling conversion circuit includes sample circuit, amplifier and the AD converter of series connection.Each sample circuit will be exported to AD converter, become digital signal to send to microprocessor 10 analog-signal transitions by AD converter more respectively from sensing circuit, the signal input amplifier that the humidity sensor circuit is gathered, the signal that will be amplified by amplifier again in the temperature sensing voltage.
After microprocessor receives the digital signal that sends over from AD converter, analyze, obtain temperature, environment temperature and humidity, air outlet temperature, the high-low pressure pressure at each parts place, adopt temperature-humidity-pressure curve, judge the fault of air-conditioning system accurately, and by relevant maintenance position and the method for maintaining of LCD prompting.And failure message can be printed so that provide reference for the client.
The concrete course of work of described air-conditioning fault locator is as follows:
The high-low pressure temperature sensor is clamped inflow point in the air-conditioning condenser 10.2cm scope and the exit in the condenser 10.2cm scope place respectively, the air-conditioner air outlet temperature sensor is placed in the air outlet of air conditioning for automobiles, the environment temperature and humidity sensor is placed in the environment, when engine on started air-conditioning system after five minutes, the detection key of input equipment pushes button, control microprocessor 10 is analyzed the digital signal that receives, judge the guilty culprit of air-conditioning system, and at the screen display failure message and the repair prompt of LCD.The preservation key of input equipment of pushing button can be preserved failure message.
If the infrared lamp and the infrared ray printer of air-conditioning are connected, the printing key print fault information of the input equipment that can also push button.
Described failure message can comprise following information:
First kind failure message: the temperature difference of prompting condenser inlet outlet is too big.
Corresponding prompting repair message is: A. hangs down coolant charging; The contaminated refrigerant of B: noncondensable gas; (restriction) (condenser and gas outlet) stopped up in the circulation of C system.
The second class failure message: the temperature difference of condenser inlet outlet is too little.
Corresponding prompting repair message is: 2A checks whether coolant charging is too much; 2B sees condenser, and fin is crooked or fragment arranged; 2C checks whether fragment is arranged between heating radiator and the condenser; Whether normally 2D detects refrigerating fan operation; 2E detects whether restricted thing of compressor exhaust pipe; Whether too much oil is arranged in the 2F detection system; Whether 2G detects engine-operated temperature overheating; 2H detects reservoir or whether exsiccator has obstruction.
The 3rd class failure message: the temperature between environment temperature and the air-conditioner air outlet is not in allowed limits
Corresponding prompting repair message: 3A checks the filling of refrigerant; 3B checks whether mix refrigerant; 3C checks that hot combination gates do not shut; 3D inspection heat control valve (HCV) is not shut; 3E checks the valve fault of recycle; 3F checks that the page or leaf sheet of the fan of evaporator has fragment; Whether added excessive oil in the 3G check system; Whether overheated 3H check engine operation temperature; 3I detects temperature control cycling switch/pressure cycling switch; 3J checks the sealing gasket of evaporator; 3K checks the leakage of the O shape circle of blast tube.
The 4th class failure message: environment temperature/air-conditioner air outlet temperature and condenser out temperature difference all are lower than standard value.If show this information at the LCD of this instrument, significant trouble has taken place in possible accessory.Change accessory and air-conditioning system is carried out major tune-up with regard to needs like this.The possible cause that occurs from second class and the 3rd class earlier sets about to detect.
The 5th class failure message: ambient air temperature is lower than 22.8 degree.
The minimum ambient air temperature value of air-conditioning diagnostic equipment operation is 22.8 degree, in fact spends or higher the time, need carry out performance test usually 23.9 when ambient air temperature.Improve ambient air temperature and then row test.
Therefore, compared with prior art, the air conditioning for automobiles fault locator that the utility model provides, can measure temperature, environment temperature and humidity, air outlet temperature, the high-low pressure pressure at each parts place of air-conditioning system, therefore can judge the fault of air-conditioning system fast and accurately, and keep in repair according to information.
More than air conditioning for automobiles fault locator that the utility model embodiment is provided be described in detail, used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used to help to understand the technical scheme that the utility model discloses; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (5)
1. air conditioning for automobiles fault locator, it is characterized in that, comprise microprocessor, the signaling conversion circuit that links to each other with microprocessor, the temperature sensing circuit that links to each other with signaling conversion circuit, pressure sensor circuit, humidity sensor circuit, input-output device that links to each other with microprocessor and the power supply management device that links to each other with microprocessor, described temperature sensing circuit, pressure sensor circuit, humidity sensor circuit send to signaling conversion circuit with simulating signal and are converted to digital signal, and send to microprocessor.
2. air conditioning for automobiles fault locator according to claim 1, it is characterized in that, described signaling conversion circuit comprises sample circuit, amplifier and the converter of series connection, and sample circuit will be exported to AD converter, become digital signal to send to microprocessor analog-signal transitions by AD converter again from sensing circuit, the signal input amplifier that the humidity sensor circuit is gathered, the signal that will be amplified by amplifier again in the temperature sensing voltage.
3. air conditioning for automobiles fault locator according to claim 1 is characterized in that described pressure sensor circuit comprises high pressure sensor and low pressure sensor, and the output terminal of described high pressure sensor and low pressure sensor links to each other with described signaling conversion circuit respectively.
4. air conditioning for automobiles fault locator according to claim 1, it is characterized in that, described temperature sensing circuit comprises high pressure temperature sensor and low pressure temperature sensor, the output terminal of described high pressure, low pressure temperature sensor links to each other with described signaling conversion circuit, described temperature sensing circuit also comprises non-be environment temperature sensor and air-conditioner air outlet temperature sensor, and the output terminal of described temperature sensor links to each other with signaling conversion circuit.
5. air conditioning for automobiles fault locator according to claim 1 is characterized in that, described humidity sensor circuit comprises humidity sensor, and the output terminal of described humidity sensor links to each other with signaling conversion circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201767889U CN201795922U (en) | 2010-04-05 | 2010-04-05 | Automobile air conditioner failure detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201767889U CN201795922U (en) | 2010-04-05 | 2010-04-05 | Automobile air conditioner failure detector |
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| Publication Number | Publication Date |
|---|---|
| CN201795922U true CN201795922U (en) | 2011-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201767889U Expired - Fee Related CN201795922U (en) | 2010-04-05 | 2010-04-05 | Automobile air conditioner failure detector |
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| CN (1) | CN201795922U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893521A (en) * | 2010-04-05 | 2010-11-24 | 玉环朗讯铜业有限公司 | Automotive air conditioner fault detector and fault detecting method |
| CN102620389A (en) * | 2012-04-26 | 2012-08-01 | 江苏阿尔特空调实业有限责任公司 | Intelligent management and control system for failure of automotive air conditioning |
| CN103424271A (en) * | 2013-08-24 | 2013-12-04 | 中国北车集团大同电力机车有限责任公司 | Driver air conditioner test bed system |
| CN107102662A (en) * | 2017-06-20 | 2017-08-29 | 佛山职业技术学院 | A kind of air conditioning for automobiles flow and System Controlled by Measuring Pressure based on WiFi technology |
-
2010
- 2010-04-05 CN CN2010201767889U patent/CN201795922U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893521A (en) * | 2010-04-05 | 2010-11-24 | 玉环朗讯铜业有限公司 | Automotive air conditioner fault detector and fault detecting method |
| CN102620389A (en) * | 2012-04-26 | 2012-08-01 | 江苏阿尔特空调实业有限责任公司 | Intelligent management and control system for failure of automotive air conditioning |
| CN103424271A (en) * | 2013-08-24 | 2013-12-04 | 中国北车集团大同电力机车有限责任公司 | Driver air conditioner test bed system |
| CN107102662A (en) * | 2017-06-20 | 2017-08-29 | 佛山职业技术学院 | A kind of air conditioning for automobiles flow and System Controlled by Measuring Pressure based on WiFi technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: TAIZHOU LANGXUN MACHINERY CO., LTD. Free format text: FORMER NAME: YUHUAN LANGXUN COPPER INDUSTRY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 317600 valve industrial zone (Yuhuan County), Taizhou, Zhejiang, China (Long Xi) Patentee after: Taizhou Langxun Machinery Co., Ltd. Address before: 317600 valve industrial zone (Yuhuan County), Taizhou, Zhejiang, China (Long Xi) Patentee before: Yuhuan Langxun Brass Industry Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20170405 |
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| CF01 | Termination of patent right due to non-payment of annual fee |