CN103675542A - Automatic detection system of electric changeover valve of refrigerator - Google Patents
Automatic detection system of electric changeover valve of refrigerator Download PDFInfo
- Publication number
- CN103675542A CN103675542A CN201310649053.1A CN201310649053A CN103675542A CN 103675542 A CN103675542 A CN 103675542A CN 201310649053 A CN201310649053 A CN 201310649053A CN 103675542 A CN103675542 A CN 103675542A
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- switching valve
- refrigerator
- dynamoelectric switching
- mcu
- tongue tube
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- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention provides an automatic detection system of an electric changeover valve of a refrigerator. The automatic detection system is characterized by comprising a MCU, a driving amplifier, a power supply and a detection circuit. The power supply is connected with the driving amplifier and the MCU. The input end of the detection circuit is connected with an output port of the electric changeover valve, and the output end of the detection circuit is connected with the MCU. Compared with traditional detection modes, the automatic detection system is convenient to operate and can quickly detect a working state of the electric changeover valve of the refrigerator and display a detection result on an information display screen of the MCU, and an operator can intuitively check whether the electric changeover valve normally works or not.
Description
Technical field
The present invention relates to system testing field, relate in particular to the automatic detection field of a kind 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 end injecting compressed air, whether output terminal goes induction electric transfer valve output port to have pressurized air to flow out with hand, detection mode efficiency is low like this, can not judge accurately whether dynamoelectric switching valve normally works fast He intuitively.
Summary of the invention
For addressing the above problem, the invention provides a kind of refrigerator dynamoelectric switching valve automatic checkout system, it is characterized in that, comprise MCU, driving amplifier, power supply, testing circuit; Described power supply is connected with driving amplifier, MCU; Described testing 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 controlling the normal work of refrigerator dynamoelectric switching valve, and gathers the status information of refrigerator dynamoelectric switching valve output port, and the state collecting and the steering order of sending are compared;
Described driving amplifier carries out, after drive amplification, imposing on refrigerator dynamoelectric switching valve for the waveform that MCU is produced;
Described state detection circuit be for by the state transfer of refrigerator dynamoelectric switching valve output port to MCU.
Further, a state detection circuit of the corresponding connection of each output port of described dynamoelectric switching valve.
Further, described state detection circuit is comprised of one-way cylinder and tongue tube, and described one-way cylinder is connected to the output port of refrigerator dynamoelectric switching valve, and tongue tube is arranged on one-way cylinder cylinder body, on the position that piston is corresponding when one-way cylinder ejects, tongue tube two ends are wired to MCU.
Further, when one-way cylinder ejects, one-way cylinder piston movement is to tongue tube installed position, the closed conducting of two electrodes of tongue tube, and when one-way cylinder is retracted, cylinder piston leaves tongue tube installed position, two electrodes disconnections of tongue tube.
Further, dynamoelectric switching valve output port accesses the one-way cylinder input port in corresponding testing circuit with tracheae.
Further, also comprise the information display screen being connected with MCU.
Beneficial effect of the present invention is:
The present invention and traditional detection mode ratio, have easy to operately, can detect rapidly the duty of refrigerator dynamoelectric switching valve, and its testing result is presented on the information display screen of MCU, and convenient operation personnel intuitively check whether current dynamoelectric switching valve normally works.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present invention.
Embodiment
Refrigerator dynamoelectric switching valve automatic checkout system of the present invention, purpose of design is for detecting fast, accurately, easily the duty of refrigerator dynamoelectric switching valve.
Refrigerator dynamoelectric switching valve automatic checkout system is comprised of MCU, power supply, driving amplifier, state detection circuit.
MCU in refrigerator dynamoelectric switching valve automatic checkout system is mainly responsible for producing the waveform of controlling the normal work of refrigerator dynamoelectric switching valve, exports to driving amplifier and carries out, after drive amplification, imposing on refrigerator dynamoelectric switching valve, makes it by steering order work; Be responsible for gathering the status information of tongue tube on refrigerator dynamoelectric switching valve output port; Be responsible for the state collecting and the steering order of sending to compare, if consistent with expection control, dynamoelectric switching valve is normally worked, otherwise breaks down, and the result of judgement is presented on information display screen.
Described state detection circuit is comprised of one-way cylinder and tongue tube.One-way cylinder is connected to the output port of refrigerator dynamoelectric switching valve, and tongue tube is mounted in cylinder block, and on the position that when cylinder ejects, piston is corresponding, tongue tube two ends are wired to MCU.Described circuit working principle is: when cylinder ejects, cylinder piston moves to tongue tube installed position, the closed conducting of two electrodes of tongue tube, and when cylinders retract, cylinder piston leaves tongue tube installed position, and two electrodes of tongue tube disconnect.The conducting of tongue tube and disconnection two states are delivered to MCU by wire.
In refrigerator dynamoelectric switching valve automatic checkout system, state detection circuit is determined according to the output port quantity of transfer valve, can expand and reduce.The present invention is described in detail as example to take four dynamoelectric switching valves that are threeway below.
This dynamoelectric switching valve is 48 impulsive switched valves, and input port A, output port B, C, D form.Its control law is, when input 0 pulse, AB is logical, and AC, AD turn-off, and when input 16 pulse, AC is logical, and AB, AD turn-off, and when input 32 pulse, AD is logical, and AB, AC turn-off, and when input 48 pulse, AB, AC, AD turn-off.Below by detailed operation, set forth the course of work of refrigerator dynamoelectric switching valve automatic checkout system.
The first step, is linked into automatic checkout system drive output the control port of dynamoelectric switching valve, notices that control line order will connect correctly.
Second step, the input port A of pressurized air access refrigerator dynamoelectric switching valve, driving power is provided to the cylinder on dynamoelectric switching valve output port.
The 3rd step, by the cylinder input port in tracheae detection circuit for access 1 for dynamoelectric switching valve output port B.
The 4th step, by the cylinder input port in tracheae detection circuit for access 2 for dynamoelectric switching valve output port C.
The 5th step, by the cylinder input port in tracheae detection circuit for access 3 for dynamoelectric switching valve output port D.
After above step, automatic checkout system has been connected with tested dynamoelectric switching valve; Introduce below and how automatically to detect.
Detect AB working condition, when the MCU of automatic checkout system sends 0 pulse signal, by driving circuit, control dynamoelectric switching valve, the now AB conducting of dynamoelectric switching valve, because pressurized air leads to B by A end, cylinder in testing circuit 1 is ejected, the closed conducting of tongue tube, its closure state is sent to MCU; And AC, AD turn-off, the cylinder in its testing circuit 2 and 3 is in pushing back state, and their tongue tube is in off-state, and its off-state information also can be sent to MCU; The judgment rule arranging according to MCU, during output 0 pulse, testing circuit 1 is passed closure state back, and testing circuit 2 and testing circuit 3 are passed off-state back.The state that automatic checkout system is detected is compared with the judgment rule of setting, if consistent, dynamoelectric switching valve AB is working properly, otherwise is considered as breaking down.
Detect AC working condition, when the MCU of automatic checkout system sends 16 pulse signals, by driving circuit, control dynamoelectric switching valve, the now AC conducting of dynamoelectric switching valve, because pressurized air leads to C by A end, cylinder in testing circuit 2 is ejected, the closed conducting of tongue tube, its closure state is sent to MCU; And AB, AD turn-off, the cylinder in its testing circuit 1 and 3 is in pushing back state, and their tongue tube is in off-state, and its off-state information also can be sent to MCU; The judgment rule arranging according to MCU, during output 16 pulse, testing circuit 2 is passed closure state back, and testing circuit 1 and testing circuit 3 are passed off-state back.The state that automatic checkout system is detected is compared with the judgment rule of setting, if consistent, dynamoelectric switching valve AC is working properly, otherwise is considered as breaking down.
Detect AD working condition, when the MCU of automatic checkout system sends 32 pulse signals, by driving circuit, control dynamoelectric switching valve, the now AD conducting of dynamoelectric switching valve, because pressurized air leads to D by A end, cylinder in testing circuit 3 is ejected, the closed conducting of tongue tube, its closure state is sent to MCU; And AB, AC turn-off, the cylinder in its testing circuit 1 and 2 is in pushing back state, and their tongue tube is in off-state, and its off-state information also can be sent to MCU; The judgment rule arranging according to MCU, during output 32 pulse, testing circuit 3 is passed closure state back, and testing circuit 1 and testing circuit 2 are passed off-state back.The state that automatic checkout system is detected is compared with the judgment rule of setting, if consistent, dynamoelectric switching valve AD is working properly, otherwise is considered as breaking down.
Detect AB, AC, AD working condition, at the MCU of automatic checkout system, send 48 pulse signals, by driving circuit, control dynamoelectric switching valve, now the AB of dynamoelectric switching valve, AC, AD turn-off, cylinder in its testing circuit 1,2,3 is in pushing back state, their tongue tube is in off-state, and its off-state information is sent to MCU; The judgment rule arranging according to MCU, during output 48 pulse, testing circuit 1,2,3 is passed off-state back.The state that automatic checkout system is detected is compared with the judgment rule of setting, if consistent, dynamoelectric switching valve AB, AC, AD are working properly, otherwise are considered as breaking down.
The testing circuit 1,2,3 of mentioning in more than setting forth can carry out as the case may be unconfined expansion and detect to meet the dynamoelectric switching valve of different demands.
Beneficial effect of the present invention is:
The present invention and traditional detection mode ratio, have easy to operately, can detect rapidly the duty of refrigerator dynamoelectric switching valve, and its testing result is presented on the information display screen of MCU, and convenient operation personnel intuitively check whether current dynamoelectric switching valve normally works.
Claims (6)
1. refrigerator dynamoelectric switching valve automatic checkout system, is characterized in that, comprises MCU, driving amplifier, power supply, testing circuit; Described power supply is connected with driving amplifier, MCU; Described testing 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 controlling the normal work of refrigerator dynamoelectric switching valve, and gathers the status information of refrigerator dynamoelectric switching valve output port, and the state collecting and the steering order of sending are compared;
Described driving amplifier carries out, after drive amplification, imposing on refrigerator dynamoelectric switching valve for the waveform that MCU is produced;
Described state detection circuit be for by the state transfer of refrigerator dynamoelectric switching valve output port to MCU.
2. refrigerator dynamoelectric switching valve automatic checkout system as claimed in claim 1, is characterized in that, a state detection circuit of the corresponding connection of each output port of described dynamoelectric switching valve.
3. refrigerator dynamoelectric switching valve automatic checkout system as claimed in claim 1 or 2, it is characterized in that, described state detection circuit is comprised of one-way cylinder and tongue tube, described one-way cylinder is connected to the output port of refrigerator dynamoelectric switching valve, tongue tube is arranged on one-way cylinder cylinder body, on the position that piston is corresponding when one-way cylinder ejects, tongue tube two ends are wired to MCU.
4. refrigerator dynamoelectric switching valve automatic checkout system as claimed in claim 3, it is characterized in that, when one-way cylinder ejects, one-way cylinder piston movement is to tongue tube installed position, the closed conducting of two electrodes of tongue tube, when one-way cylinder is retracted, cylinder piston leaves tongue tube installed position, and two electrodes of tongue tube disconnect.
5. refrigerator dynamoelectric switching valve automatic checkout system as claimed in claim 3, is characterized in that, dynamoelectric switching valve output port accesses the one-way cylinder input port in corresponding testing circuit with tracheae.
6. refrigerator dynamoelectric switching valve automatic checkout system as claimed in claim 3, is characterized in that, also comprises 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103675542A true CN103675542A (en) | 2014-03-26 |
| CN103675542B CN103675542B (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310649053.1A Active CN103675542B (en) | 2013-12-06 | 2013-12-06 | Automatic detection system of electric changeover valve of refrigerator |
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Cited By (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 | An electric switching valve detection device and method thereof |
Citations (4)
| 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 |
| JPH085173A (en) * | 1994-06-16 | 1996-01-12 | Daido Hoxan Inc | Pulse tube refrigerator |
| 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 |
-
2013
- 2013-12-06 CN CN201310649053.1A patent/CN103675542B/en active Active
Patent Citations (4)
| 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 |
| JPH085173A (en) * | 1994-06-16 | 1996-01-12 | Daido Hoxan Inc | Pulse tube refrigerator |
| 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 |
Cited By (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 | An electric switching valve detection device and method thereof |
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| CN103675542B (en) | 2016-06-01 |
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