CN202267735U - Detecting device of variable-frequency compressor driving plate - Google Patents
Detecting device of variable-frequency compressor driving plate Download PDFInfo
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- CN202267735U CN202267735U CN2011204057000U CN201120405700U CN202267735U CN 202267735 U CN202267735 U CN 202267735U CN 2011204057000 U CN2011204057000 U CN 2011204057000U CN 201120405700 U CN201120405700 U CN 201120405700U CN 202267735 U CN202267735 U CN 202267735U
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Abstract
The utility model relates to a detecting device of a variable-frequency compressor driving plate, adopts a detection method by utilizing weak current to detect a strong current circuit together with an automatic judgment method. Due to the adoption of the detection method, damage of the detected driving plate can be effectively avoided, and each functional circuit can be qualitatively detected and quantitatively tested without artificial judgment so as to remarkably improve the detection accuracy and the detection efficiency. The detecting device of the variable-frequency compressor driving plate is externally connected with a driving plate to be detected, and at least two circuits of direct-current stabilizing power supplies which are isolated from each other are provided; and the detecting device comprises a detecting plate having microcontroller unit (MCU), wherein a direct-current stabilizing power supply, a display plate, a direct-current voltage meter and an alternative-current voltage meter are arranged on the periphery of the detecting plate, and the detecting plate is provided with a relay for executing the time sequence control. The detecting plate adopts two circuits of independent +15V weak-current power supplies which are isolated to each other to detect an intelligent power module (IPM) and an insulated gate bipolar transistor (IGBT) functional circuits on the driving plate to be detected.
Description
Technical field
The utility model relates to a kind of pick-up unit that is applied to refrigerating plant frequency-changeable compressor drive plate, belongs to the electrical equipment control technical field.
Background technology
The existing refrigerating plant that belongs to family expenses or commercial appliance like air conditioner or refrigerator, takes frequency conversion control technique to reach the purpose of economize on electricity, raising refrigerating efficiency at large.
Detection method to the frequency-changeable compressor drive plate has a lot; But mainly adopt the detecting pattern of external compressor; It is the actual connection one compressor model machine of drive plate; That takes is still the forceful electric power detection mode, and under the actual user mode and the environment of signal and communication between the compressor and control, testing result still needs manual work to judge with the analog-driven plate.
In present forceful electric power testing process,,, when internal components pin accident is communicated with or is operatively connected mistake, all very easily cause drive plate to be detected breakdown such as adopting 220V or 310 driving voltages if misoperation directly will cause the damage of drive plate to be detected.Perhaps, when external compressor is damaged, also be prone to cause the damage of drive plate to be detected.
And what is more important, above-mentioned existing detection method is the pattern of transplanting running state of air conditioner, only can judge whether qualified the making qualitatively of drive plate, and can not make quantitative judgement, promptly whether qualified each module performance of drive plate is can't deeply judge.Even it is really qualified to show that qualified drive plate also is not necessarily.
In view of this, the special present patent application that proposes.
The utility model content
The pick-up unit of the described frequency-changeable compressor drive plate of the utility model, its purpose of design are to solve the problem that above-mentioned prior art exists and the detection method of taking weak electricity measuring forceful electric power circuit and being aided with automatic judgement.This method realizes avoiding effectively damage that drive plate to be detected is caused, can detect qualitatively and quantitative test each functional circuit, need not to carry out manual work judgement, in the hope of improving detection accuracy and efficient significantly.
For realizing above-mentioned purpose of design, the pick-up unit of described frequency-changeable compressor drive plate, its external drive plate to be detected also provides at least 2 tunnel D.C. regulated power supplies of isolating each other;
Pick-up unit comprises having the check-out console of MCU, is equipped with D.C. regulated power supply, display board, D.C. voltmeter, A.C. voltmeter in the check-out console periphery, and check-out console is provided with the relay that carries out sequential control.
Wherein, that described check-out console adopts is 2 the tunnel that independently provide, isolate each other+15V light current power supply, to detect IPM and the IGBT functional circuit on the drive plate to be detected.
The MCU periphery of check-out console disposes, communication that is connected with drive plate to be detected and control signal transmission interface.
As stated, the pick-up unit of the utility model frequency-changeable compressor drive plate has the following advantages:
1,, can realize a kind of automatic decision procedure, and can avoid damage that drive plate to be detected is caused effectively with weak electricity measuring forceful electric power circuit.
2, the real realization detected and quantitative test each functional circuit qualitatively, need not to carry out manual work and judges, can improve detection accuracy and efficient significantly.
Description of drawings
Combine following accompanying drawing that the utility model is done further explanation and explanation at present.
Fig. 1 is the pick-up unit structured flowchart of said frequency-changeable compressor drive plate;
Fig. 2 is the synoptic diagram that detects power circuit;
Fig. 3 is the synoptic diagram that detects telecommunication circuit;
Fig. 4 is the synoptic diagram that detects PFC alternating voltage circuit;
Fig. 5 is the synoptic diagram of detection power diode, rectification silicon bridge and bus DC voltage sample circuit;
Fig. 6 is the synoptic diagram that detects IGBT driving circuit, PFC current sampling circuit;
Fig. 7 is the synoptic diagram of detection power diode component;
Fig. 8 detects the IGBT of IPM and the synoptic diagram of driving circuit;
Fig. 9 is the synoptic diagram that detects the U phase current testing circuit of IPM;
Figure 10 is the synoptic diagram that detects the V phase current testing circuit of IPM.
Embodiment
Described pick-up unit comprises having the check-out console of MCU, is equipped with D.C. regulated power supply, display board, D.C. voltmeter, A.C. voltmeter in the check-out console periphery, and check-out console is provided with the relay that carries out sequential control.
That described check-out console adopts is 2 the tunnel that independently provide, isolate each other+15V light current power supply, to detect IPM and the IGBT functional circuit on the drive plate to be detected.
The MCU periphery of check-out console disposes, communication that is connected with drive plate to be detected and control signal transmission interface.
As above the pick-up unit of content is to be core with the check-out console, and the periphery is equipped with D.C. regulated power supply, function button, needle-bar etc.Wherein,
Display board is the output interface that check-out console detects data, through communicating by letter of check-out console and drive plate to be detected, can realize automatic detection.During non-fault, the detection meeting is undertaken by the detection steps in sequence of setting, otherwise will stop to detect, and hummer yowls, and reports out concrete fault at display interface.
Particularly, the used power supply of check-out console adopts external independent stabilized voltage supply, with the reliability that guarantees to detect;
Check-out console mainly links to each other with drive plate to be detected through the mode of thimble, is aided with the mode of plug wire;
Utilize the sequential control of relay on the check-out console, realize the independent detection of each functional circuit of drive plate to be detected;
Check-out console and the mode of drive plate to be detected through communicating by letter are passed to check-out console with the data of drive plate computing to be detected, and check-out console MCU compares data and the numerical value that presets, determine whether correctly, thus the detection by quantitative of realization functional circuit; Owing to judge by MCU and judge automatically, improved the automatization level and the accuracy that detect, greatly reduce the influence of human error factor.
Check-out console adopts the light current of 2 tunnel isolation+15V to detect forceful electric power circuit such as IPM and IGBT, avoids the damage of testing process to device.
The power supply of check-out console independently provides, and adopts linear transformer, and secondary output supplies the uses such as MCU, driver, hummer of check-out console behind rectifying and wave-filtering.The interface of the peripheral configuration of the MCU of check-out console and drive plate, can realize and drive plate to be detected between communication and control.
The circuit design of display board is to be provided by check-out console, drives 32 charactrons through chip, in order to show the output data of check-out console; Drive hummer through triode simultaneously, carry out fault alarm.
Can be provided with 6 charactrons on the display board, displaying contents is respectively: 1st, 2 for detecting step, and the 3rd, 4,5 be that data presentation position, the 6th are fault verification position (0:OK; 1:NG):
When manual work was judged, trace routine stopped, and needed manual work to touch the button and got into next step, otherwise wait for always;
When MCU judged automatically, if non-fault, last position of charactron showed 0, then from being advanced into next step detection; If fault is arranged, last position of charactron shows 1, and then hummer yowls, and stops trace routine, simultaneously the switching off load power supply.
To shown in Figure 10, the detection method of said frequency-changeable compressor drive plate is like Fig. 2:
Drive plate to be detected external one is equipped with the pick-up unit of at least 2 tunnel D.C. regulated power supplies of isolating each other, thereby realizes the mode of weak electricity measuring forceful electric power circuit;
Described pick-up unit comprises having the check-out console of MCU, is equipped with D.C. regulated power supply, display board, D.C. voltmeter, A.C. voltmeter in the check-out console periphery, and check-out console and drive plate to be detected carry out signal communication and power supply is provided;
Utilize the relay on the check-out console to carry out sequential control, with relatively independent ground, step by step each functional circuit on the drive plate to be detected is detected;
The data transfer of each functional circuit computing of drive plate to be detected is to check-out console, and whether the MCU of check-out console compares data and the numerical value that presets, normal with each functional circuit of confirming drive plate to be detected.
Wherein, when detecting power supply, check-out console external voltage table also directly shows.
During the measuring ability pilot lamp, check-out console provides power supply to show with energising to indicator light cycle.
When detecting telecommunication circuit, check-out console and drive plate direct communication to be detected, the MCU judgement information of check-out console is sent and the integrality of passing back.
When detecting PFC module alternating voltage, drive plate to be detected inserts L, the N line of 220V alternating current respectively, and controls break-make by the relay of check-out console;
After connecting A.C. voltmeter and showing, by the MCU sample voltage value of drive plate to be detected and pass the MCU of check-out console back, the MCU of check-out console judges that ac voltage is whether in 5% error range.
When detection power diode, rectification silicon bridge and bus DC voltage; The L1 of drive plate to be detected, L2 end insert lead respectively and control break-make by the relay of check-out console; Import 310V DC voltage and external voltage table to show; The MCU of drive plate to be detected samples automatically and calculates corresponding dc voltage value, and the result of calculation communication is passed the MCU of check-out console back to judge whether in 5% error range.
When detecting the IGBT driving circuit with the PFC current sampling circuit, the L2 of drive plate to be detected end be connected to PFC+the 15V power end, drive plate Nin end to be detected is connected to the earth terminal of PFC, and controls break-make by the relay of check-out console;
The MCU of drive plate to be detected drives the IGBT conducting and detects Iac pin voltage, and the actual current value communication that is calculated to be is passed the MCU of check-out console back to judge whether in 5% error range of setting value;
The MCU of drive plate to be detected drives IGBT and closes and detect Iac pin voltage, and the actual current value communication that is calculated to be is passed the MCU of check-out console back to judge whether this current value is 0.
During the detection power diode, PFC+the 15V power end connects the power diode negative electrode of drive plate to be detected, and the earth terminal of PFC connects the Nin end of drive plate to be detected, and by the relay control break-make of check-out console;
The MCU of drive plate to be detected drives the IGBT conducting and detects Iac pin voltage, and the actual current value communication that is calculated to be is passed the MCU of check-out console back to judge whether this current value is 0.
When detecting 6 road IGBT and the driving circuit of IPM, IPM+the 15V power end is connected to the P end of drive plate to be detected, and the earth terminal of IPM is connected to the N end of drive plate to be detected, and by the relay control break-make of check-out console;
Between the U of P end and IGBT, V, the W terminal, between U, V, W terminal and the N end, the LED that inserts optocoupler respectively holds and controls break-make by the relay of check-out console;
When last bridge was opened, the luminotron of U, V, W-N optocoupler brightened, and correspondingly the MCU pin is received low level signal; The luminotron of P-U, V, W optocoupler does not work, and correspondingly the MCU pin is received high level signal;
When last bridge turn-offed, the luminotron of U, V, W-N optocoupler did not work, and correspondingly the MCU pin is received high level signal; The luminotron of P-U, V, W optocoupler brightens, and correspondingly the MCU pin is received low level signal.
With U is that example describes as follows mutually,
1. the U that drive plate MCU to be detected drives IPM goes up that bridge is closed, bridge conducting under the U, confirms that U goes up the bridge respective pin and whether receives low level, and other pin is received high level, and communication passes check-out console MCU back, and detection method is that MCU judges automatically;
2. the U that drive plate MCU to be detected drives IPM goes up under bridge conducting, the U bridge and closes, and confirms whether the bridge respective pin receives low level under the U, and other pin is received high level, and communication passes check-out console MCU back, and detection method is that MCU judges automatically;
3. the V that drive plate MCU to be detected drives IPM goes up that bridge is closed, bridge conducting under the V, confirms that V goes up the bridge respective pin and whether receives low level, and other pin is received high level, and communication passes check-out console MCU back, and detection method is that MCU judges automatically;
4. the V that drive plate MCU to be detected drives IPM goes up under bridge conducting, the V bridge and closes, and confirms whether the bridge respective pin receives low level under the V, and other pin is received high level, and communication passes check-out console MCU back, and detection method is that MCU judges automatically;
5. the W that drive plate MCU to be detected drives IPM goes up that bridge is closed, bridge conducting under the W, confirms that W goes up the bridge respective pin and whether receives low level, and other pin is received high level, and communication passes check-out console MCU back, and detection method is that MCU judges automatically;
6. the W that drive plate MCU to be detected drives IPM goes up under bridge conducting, the W bridge and closes, and confirms whether the bridge respective pin receives low level under the W, and other pin is received high level, and communication passes check-out console MCU back,, detection method is that MCU judges automatically;
When detecting the U phase current testing circuit of IPM, IPM+the 15V power end connects and connects the P end of drive plate to be detected behind the current-limiting resistance 3R/300W, and IPM earth terminal GND is connected to the N end of drive plate to be detected, and by the relay control break-make of check-out console;
Drive plate MCU to be detected drives U Shang Qiao, the bridge conducting down of IPM; Drive plate MCU to be detected detects the Ushunt pin voltage and is calculated to be actual current value automatically; The MCU of check-out console is passed in communication back; The MCU of check-out console confirms this current value whether in 5% error range of setting value, and detection method is that MCU judges automatically.
When detecting the V phase current testing circuit of IPM, IPM+the 15V power end connects and connects the P end of drive plate to be detected behind the current-limiting resistance 3R/300W, and the earth terminal GND of IPM is connected to the N end of drive plate to be detected, and by the relay control break-make of check-out console;
Drive plate MCU to be detected drives V Shang Qiao, the bridge conducting down of IPM; Drive plate MCU to be detected detects the Vshunt pin voltage and is calculated to be actual current value automatically; The MCU of check-out console is passed in communication back; The MCU of check-out console confirms this current value whether in 5% error range of setting value, and detection method is that MCU judges automatically.
The detection of above-mentioned each functional circuit all is to carry out ground in order automatically, can realize qualitative and quantitative detection to the frequency-changeable compressor drive plate through above-mentioned detection method, detects more precisely with reliable.
Claims (3)
1. the pick-up unit of a frequency-changeable compressor drive plate is characterized in that: the external drive plate to be detected of pick-up unit also provides at least 2 tunnel D.C. regulated power supplies of isolating each other;
Pick-up unit comprises having the check-out console of MCU, is equipped with D.C. regulated power supply, display board, D.C. voltmeter, A.C. voltmeter in the check-out console periphery, and check-out console is provided with the relay that carries out sequential control.
2. the pick-up unit of frequency-changeable compressor drive plate according to claim 1 is characterized in that: that described check-out console adopts is 2 the tunnel that independently provide, isolate each other+15V light current power supply, to detect IPM and the IGBT functional circuit on the drive plate to be detected.
3. the pick-up unit of frequency-changeable compressor drive plate according to claim 2 is characterized in that: the MCU periphery of check-out console disposes, communication that is connected with drive plate to be detected and control signal transmission interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204057000U CN202267735U (en) | 2011-10-22 | 2011-10-22 | Detecting device of variable-frequency compressor driving plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204057000U CN202267735U (en) | 2011-10-22 | 2011-10-22 | Detecting device of variable-frequency compressor driving plate |
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| CN202267735U true CN202267735U (en) | 2012-06-06 |
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| CN2011204057000U Expired - Fee Related CN202267735U (en) | 2011-10-22 | 2011-10-22 | Detecting device of variable-frequency compressor driving plate |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102789230A (en) * | 2012-08-13 | 2012-11-21 | 海信（山东）空调有限公司 | Method for automatically detecting air conditioner outdoor unit control panel |
| CN102798813A (en) * | 2012-08-28 | 2012-11-28 | 海信（山东）空调有限公司 | Method and device for detecting drive circuit of electromagnetic induction device |
| CN102809967A (en) * | 2012-08-13 | 2012-12-05 | 海信（山东）空调有限公司 | Automatic detection method for control panel of air-conditioning indoor unit |
| CN102901904A (en) * | 2012-10-16 | 2013-01-30 | 上海欣影电力科技发展有限公司 | Multifunctional intelligent detection device for circuit board |
| CN103064001A (en) * | 2011-10-22 | 2013-04-24 | 海信（山东）空调有限公司 | Detecting method and detecting device of driving board of inverter compressor |
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2011
- 2011-10-22 CN CN2011204057000U patent/CN202267735U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103064001A (en) * | 2011-10-22 | 2013-04-24 | 海信（山东）空调有限公司 | Detecting method and detecting device of driving board of inverter compressor |
| CN103064001B (en) * | 2011-10-22 | 2016-03-23 | 海信（山东）空调有限公司 | The detection method of variable-frequency compressor driving plate and pick-up unit thereof |
| CN102789230A (en) * | 2012-08-13 | 2012-11-21 | 海信（山东）空调有限公司 | Method for automatically detecting air conditioner outdoor unit control panel |
| CN102809967A (en) * | 2012-08-13 | 2012-12-05 | 海信（山东）空调有限公司 | Automatic detection method for control panel of air-conditioning indoor unit |
| CN102809967B (en) * | 2012-08-13 | 2014-11-26 | 海信（山东）空调有限公司 | Automatic detection method for control panel of air-conditioning indoor unit |
| CN102798813A (en) * | 2012-08-28 | 2012-11-28 | 海信（山东）空调有限公司 | Method and device for detecting drive circuit of electromagnetic induction device |
| CN102798813B (en) * | 2012-08-28 | 2015-01-21 | 海信（山东）空调有限公司 | Method and device for detecting drive circuit of electromagnetic induction device |
| CN102901904A (en) * | 2012-10-16 | 2013-01-30 | 上海欣影电力科技发展有限公司 | Multifunctional intelligent detection device for circuit board |
| CN102901904B (en) * | 2012-10-16 | 2015-10-07 | 上海欣影电力科技发展有限公司 | A kind of Multifunctional intelligent detection device for circuit board |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120606 Termination date: 20201022 |
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| CF01 | Termination of patent right due to non-payment of annual fee |