CN103675542B - Automatic detection system of electric changeover valve of refrigerator - Google Patents
Automatic detection system of electric changeover valve of refrigerator Download PDFInfo
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- CN103675542B CN103675542B CN201310649053.1A CN201310649053A CN103675542B CN 103675542 B CN103675542 B CN 103675542B CN 201310649053 A CN201310649053 A CN 201310649053A CN 103675542 B CN103675542 B CN 103675542B
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- refrigerator
- mcu
- switching valve
- dynamoelectric switching
- detection circuit
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Abstract
The present invention proposes a kind of Automatic detection system of electric changeover valve of refrigerator, it is characterised in that, comprise MCU, driving amplifier, power supply, detection circuit; Described power supply is connected with driving amplifier, MCU; Described detection circuit input end is connected with the output port of dynamoelectric switching valve, and output terminal is connected with MCU. The present invention and traditional detection mode ratio, have easy to operate, can detect the working order of refrigerator dynamoelectric switching valve fast, and be displayed on the information display screen of MCU by its detected result, and convenient operation personnel intuitively check current dynamoelectric switching valve whether normal operation.
Description
Technical field
The present invention relates to system testing field, particularly relate to a kind of automatic detection field of refrigerator dynamoelectric switching valve.
Background technology
The method of traditional detection refrigerator dynamoelectric switching valve is to applying dynamoelectric switching valve normal running conditions, at its input terminus injecting compressed air, output terminal hand goes whether induction electric switching valve output port has pressurized air to flow out, such detection mode efficiency is low, can not judge dynamoelectric switching valve whether normal operation fast and intuitively accurately.
Summary of the invention
For solving the problem, the present invention provides a kind of Automatic detection system of electric changeover valve of refrigerator, it is characterised in that, comprise MCU, driving amplifier, power supply, detection circuit; Described power supply is connected with driving amplifier, MCU; Described detection circuit input end is connected with the output port of dynamoelectric switching valve, and output terminal is connected with MCU; Wherein
Described MCU is for generation of the waveform of control refrigerator dynamoelectric switching valve normal operation, and gathers the status information of refrigerator dynamoelectric switching valve output port, and the state collected and the steering order sent is compared;
The waveform that described driving amplifier is used for being produced by MCU is applied to refrigerator dynamoelectric switching valve after carrying out drive amplification;
Described detection circuit be for by the state transfer of refrigerator dynamoelectric switching valve output port to MCU.
Further, each output port correspondence of described dynamoelectric switching valve connects a detection circuit.
Further, described detection circuit is made up of one-way cylinder and dry-reed tube, and described one-way cylinder is connected to the output port of refrigerator dynamoelectric switching valve, and dry-reed tube is arranged on one-way cylinder cylinder body, on the position that when being in one-way cylinder ejection, piston is corresponding, dry-reed tube two ends are wired to MCU.
Further, when one-way cylinder ejects, one-way cylinder piston motion closes conducting to dry-reed tube installed position, dry-reed tube two electrodes, and when one-way cylinder is retracted, cylinder piston leaves dry-reed tube installed position, and dry-reed tube two electrodes disconnect.
Further, the one-way cylinder input port of dynamoelectric switching valve output port in the detection circuit of tracheae access correspondence.
Further, also comprise the information display screen being connected with MCU.
The useful effect of the present invention is:
The present invention and traditional detection mode ratio, have easy to operate, can detect the working order of refrigerator dynamoelectric switching valve fast, and be displayed on the information display screen of MCU by its detected result, and convenient operation personnel intuitively check current dynamoelectric switching valve whether normal operation.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of the present invention.
Embodiment
Automatic detection system of electric changeover valve of refrigerator of the present invention, purpose of design be for fast, accurately, easily detect refrigerator dynamoelectric switching valve working order.
Automatic detection system of electric changeover valve of refrigerator is made up of MCU, power supply, driving amplifier, detection circuit.
MCU primary responsibility in Automatic detection system of electric changeover valve of refrigerator produces the waveform of control refrigerator dynamoelectric switching valve normal operation, exports to after driving amplifier carries out drive amplification, is applied to refrigerator dynamoelectric switching valve so that it is work by steering order; It is responsible for gathering the status information of dry-reed tube on refrigerator dynamoelectric switching valve output port; It is responsible for comparing the state collected and the steering order sent, if consistent with expection control, then dynamoelectric switching valve normal operation, otherwise break down, and the result of judgement is displayed on information display screen.
Described detection circuit is made up of one-way cylinder and dry-reed tube. One-way cylinder is connected to the output port of refrigerator dynamoelectric switching valve, and dry-reed tube is mounted in cylinder block, and on the position that when cylinder ejects, piston is corresponding, dry-reed tube two ends are wired to MCU. Described circuit working principle is: when cylinder ejects, cylinder piston motion closes conducting to dry-reed tube installed position, dry-reed tube two electrodes, and when cylinders retract, cylinder piston leaves dry-reed tube installed position, and dry-reed tube two electrodes disconnect. The conducting of dry-reed tube and disconnection two states deliver to MCU by wire.
Detecting circuit in Automatic detection system of electric changeover valve of refrigerator is that the output port quantity according to switching valve is determined, it is possible to carry out expanding and reducing. Taking four as the dynamoelectric switching valve of threeway, for example, the present invention is described in detail below.
This dynamoelectric switching valve is 48 impulsive switched valves, and input port A, output port B, C, D form. Its control rule is that AB leads to when inputting 0 pulse, and AC, AD turn off, and when inputting 16 pulse, AC leads to, and AB, AD turn off, and when inputting 32 pulse, AD leads to, and AB, AC turn off, and when inputting 48 pulse, AB, AC, AD turn off. The working process of Automatic detection system of electric changeover valve of refrigerator is set forth below by detailed operation.
The first step, is linked into the control port of dynamoelectric switching valve by automatic checkout system drive output, it is noted that control line sequence to be connected correctly.
2nd step, accesses pressurized air the input port A of refrigerator dynamoelectric switching valve, provides to give the cylinder on dynamoelectric switching valve output port and drives power.
3rd step, by the cylinder input port of dynamoelectric switching valve output port B in tracheae detection circuit for access 1.
4th step, by the cylinder input port of dynamoelectric switching valve output port C in tracheae detection circuit for access 2.
5th step, by the cylinder input port of dynamoelectric switching valve output port D in tracheae detection circuit for access 3.
After above step, automatic checkout system has been connected with tested dynamoelectric switching valve; Introduce below and how automatically to detect.
Detection AB working condition, when the MCU of automatic checkout system sends 0 pulse signal, dynamoelectric switching valve is controlled by driving circuit, the now AB conducting of dynamoelectric switching valve, owing to pressurized air leads to B by A end, cylinder in detection circuit 1 is ejected, and dry-reed tube closes conducting, and its closed state is sent to MCU; And AC, AD turn off, the cylinder in its detection circuit 2 and 3 is in the state of pushing back, and their dry-reed tube is in disconnection state, and it disconnects status information also can be sent to MCU; According to the judgment rule that MCU is arranged, when exporting 0 pulse, detection circuit 1 passes closed state back, and detection circuit 2 and detection circuit 3 pass disconnection state back. The state that automatic checkout system is detected is compared with the judgment rule of setting, if unanimously, then dynamoelectric switching valve AB is working properly, otherwise is considered as fault.
Detection AC working condition, when the MCU of automatic checkout system sends 16 pulse signals, dynamoelectric switching valve is controlled by driving circuit, the now AC conducting of dynamoelectric switching valve, owing to pressurized air leads to C by A end, cylinder in detection circuit 2 is ejected, and dry-reed tube closes conducting, and its closed state is sent to MCU; And AB, AD turn off, the cylinder in its detection circuit 1 and 3 is in the state of pushing back, and their dry-reed tube is in disconnection state, and it disconnects status information also can be sent to MCU; According to the judgment rule that MCU is arranged, when exporting 16 pulse, detection circuit 2 passes closed state back, and detection circuit 1 and detection circuit 3 pass disconnection state back. The state that automatic checkout system is detected is compared with the judgment rule of setting, if unanimously, then dynamoelectric switching valve AC is working properly, otherwise is considered as fault.
Detection AD working condition, when the MCU of automatic checkout system sends 32 pulse signals, dynamoelectric switching valve is controlled by driving circuit, the now AD conducting of dynamoelectric switching valve, owing to pressurized air leads to D by A end, cylinder in detection circuit 3 is ejected, and dry-reed tube closes conducting, and its closed state is sent to MCU; And AB, AC turn off, the cylinder in its detection circuit 1 and 2 is in the state of pushing back, and their dry-reed tube is in disconnection state, and it disconnects status information also can be sent to MCU; According to the judgment rule that MCU is arranged, when exporting 32 pulse, detection circuit 3 passes closed state back, and detection circuit 1 and detection circuit 2 pass disconnection state back. The state that automatic checkout system is detected is compared with the judgment rule of setting, if unanimously, then dynamoelectric switching valve AD is working properly, otherwise is considered as fault.
Detection AB, AC, AD working condition, 48 pulse signals are sent at the MCU of automatic checkout system, dynamoelectric switching valve is controlled by driving circuit, now AB, AC, AD of dynamoelectric switching valve turn off, cylinder in its detection circuit 1,2,3 is in the state of pushing back, their dry-reed tube is in disconnection state, and it disconnects status information and is sent to MCU; According to the judgment rule that MCU is arranged, when exporting 48 pulse, detection circuit 1,2,3 passes disconnection state back. The state that automatic checkout system is detected is compared with the judgment rule of setting, if unanimously, then dynamoelectric switching valve AB, AC, AD is working properly, otherwise is considered as fault.
The detection circuit 1,2,3 mentioned in more than setting forth can carry out the dynamoelectric switching valve detection of unconfined expansion with satisfied different demand according to particular case.
The useful effect of the present invention is:
The present invention and traditional detection mode ratio, have easy to operate, can detect the working order of refrigerator dynamoelectric switching valve fast, and be displayed on the information display screen of MCU by its detected result, and convenient operation personnel intuitively check current dynamoelectric switching valve whether normal operation.
Claims (5)
1. Automatic detection system of electric changeover valve of refrigerator, it is characterised in that, comprise MCU, driving amplifier, power supply, detection circuit; Described power supply is connected with driving amplifier, MCU; Described detection circuit input end is connected with the output port of dynamoelectric switching valve, and output terminal is connected with MCU; Wherein
Described MCU is for generation of the waveform of control refrigerator dynamoelectric switching valve normal operation, and gathers the status information of refrigerator dynamoelectric switching valve output port, and the state collected and the steering order sent is compared;
The waveform that described driving amplifier is used for being produced by MCU is applied to refrigerator dynamoelectric switching valve after carrying out drive amplification;
Described detection circuit be for by the state transfer of refrigerator dynamoelectric switching valve output port to MCU; Described detection circuit is made up of one-way cylinder and dry-reed tube, described one-way cylinder is connected to the output port of refrigerator dynamoelectric switching valve, dry-reed tube is arranged on one-way cylinder cylinder body, and on the position that when being in one-way cylinder ejection, piston is corresponding, dry-reed tube two ends are wired to MCU.
2. Automatic detection system of electric changeover valve of refrigerator as claimed in claim 1, it is characterised in that, each output port correspondence of described dynamoelectric switching valve connects a detection circuit.
3. Automatic detection system of electric changeover valve of refrigerator as claimed in claim 1, it is characterized in that, when one-way cylinder ejects, one-way cylinder piston motion is to dry-reed tube installed position, dry-reed tube two electrodes close conducting, when one-way cylinder is retracted, cylinder piston leaves dry-reed tube installed position, and dry-reed tube two electrodes disconnect.
4. Automatic detection system of electric changeover valve of refrigerator as claimed in claim 1, it is characterised in that, the one-way cylinder input port of dynamoelectric switching valve output port in the detection circuit of tracheae access correspondence.
5. Automatic detection system of electric changeover valve of refrigerator as claimed in claim 1, it is characterised in that, also comprise the information display screen being connected with MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310649053.1A CN103675542B (en) | 2013-12-06 | 2013-12-06 | Automatic detection system of electric changeover valve of refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310649053.1A CN103675542B (en) | 2013-12-06 | 2013-12-06 | Automatic detection system of electric changeover valve of refrigerator |
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| Publication Number | Publication Date |
|---|---|
| CN103675542A CN103675542A (en) | 2014-03-26 |
| CN103675542B true CN103675542B (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310649053.1A Active CN103675542B (en) | 2013-12-06 | 2013-12-06 | Automatic detection system of electric changeover valve of refrigerator |
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| CN (1) | CN103675542B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113776800A (en) * | 2021-09-03 | 2021-12-10 | 长虹美菱股份有限公司 | Electric switching valve detection device and method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0619463A1 (en) * | 1993-04-08 | 1994-10-12 | General Electric Company | Sensor for pressure controlled switching valve for refrigeration system |
| CN201028095Y (en) * | 2007-04-30 | 2008-02-27 | 蒋庆 | Integrated electric switching valve |
| CN101187518A (en) * | 2007-12-14 | 2008-05-28 | 青岛澳柯玛股份有限公司 | Control device for switch electrical source driven stepping valve for refrigeration system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3604733B2 (en) * | 1994-06-16 | 2004-12-22 | エア・ウォーター株式会社 | Pulse tube refrigerator |
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2013
- 2013-12-06 CN CN201310649053.1A patent/CN103675542B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0619463A1 (en) * | 1993-04-08 | 1994-10-12 | General Electric Company | Sensor for pressure controlled switching valve for refrigeration system |
| CN201028095Y (en) * | 2007-04-30 | 2008-02-27 | 蒋庆 | Integrated electric switching valve |
| CN101187518A (en) * | 2007-12-14 | 2008-05-28 | 青岛澳柯玛股份有限公司 | Control device for switch electrical source driven stepping valve for refrigeration system |
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| CN103675542A (en) | 2014-03-26 |
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