CN102116833B - Simulation test tool for direct current motor and method thereof - Google Patents
Simulation test tool for direct current motor and method thereof Download PDFInfo
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- CN102116833B CN102116833B CN 200910312587 CN200910312587A CN102116833B CN 102116833 B CN102116833 B CN 102116833B CN 200910312587 CN200910312587 CN 200910312587 CN 200910312587 A CN200910312587 A CN 200910312587A CN 102116833 B CN102116833 B CN 102116833B
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- 238000004088 simulation Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000012360 testing method Methods 0.000 title abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 35
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 238000004378 air conditioning Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
The invention relates to a simulation test tool for a direct current motor and a method thereof. The simulation test tool including a PWM (Pulse Width Modulation) pulse conversion circuit is adopted to convert a Vsp voltage signal debugged and outputted by a master control board into the rotating speed value of the direct current motor to be displayed, so that a driving circuit of a direct current fan in the mater control board is detected on the premise that a direct current motor real object is not used. The simulation test tool comprises an input interface, a power supply conversion circuit, a direct current bus voltage detection circuit, a power supply circuit, a PWM (Pulse Width Modulation) pulse conversion circuit, a tool CPU (Central Processing Unit) and a display circuit, wherein the power supply conversion circuit is used for leading in the voltage of a direct current bus from the input interface and controlling a level signal; the direct current bus voltage detection circuit is connected with the power supply conversion circuit to detect the voltage of the direct current bus; the power supply circuit is connected with the power supply conversion circuit to transmit the level signal converted into 5V into the tool CPU (Central Processing Unit); the PWM pulse conversion circuit is used for leading in the Vsp voltage signal of the master control board of an air conditioner from the input interface and transmitting the Vsp voltage signal to the tool CPU (Central Processing Unit); the tool CPU (Central Processing Unit) is used for converting the Vsp voltage signal into AD value and transmitting the AD value and the corresponding rotating speed value of the direct current motor into the display circuit.
Description
Technical field
The present invention is a kind of DC motor simulation detection fixture and method thereof that is applied to transducer air conditioning, replaces the direct current generator material object by simulation detection fixture specifically master control borad is detected, and belongs to the air conditioning and refrigeration field of engineering technology.
Background technology
Along with the widespread use of family expenses or commerical frequency variable air conditioner, the dc brushless motor that is used for driving off-premises station condenser fan becomes the parts that comparatively generally adopt.Based on the variable frequency control principle, the rotating speed of setting randomly and control direct current generator according to refrigerating capacity load and environment temperature is one of critical technical parameter.
The rotating speed of direct current generator is directly controlled by the off-premises station master control borad, and detecting the dc fan driving circuit is the online main project that detects of master control borad.In the Assembling production run of existing transducer air conditioning, adopt at large direct current generator in kind for the master control borad detection that includes the dc fan driving circuit, be about to master control borad and be connected to simulate air conditioner operation actual conditions with direct current generator.
The quantity of batch producing master control borad is larger, dock, changing, removes repeatedly dc fan on the streamline between a plurality of load frocks, more easily causes dc fan itself to be damaged and has influence on accuracy and the authenticity of detection data.
In addition, adopt the direct current generator material object to detect the raising that not only can cause testing cost, and testing process is loaded down with trivial details, the detection efficiency that is unfavorable for improving master control borad integral body.
Summary of the invention
DC motor simulation detection fixture of the present invention and method thereof, its purpose is to address the above problem and adopts
With the simulation detection fixture that includes the pwm pulse change-over circuit, convert the Vsp voltage signal of master control borad debugging output to the dc motor speed value and show, thereby under the prerequisite of not using the direct current generator material object, realization is for the detection of dc fan driving circuit in the master control borad, testing process is direct, quick, testing cost is lower, and accuracy is higher.
Another goal of the invention is, to replace direct current generator in kind to detect frock, and it is lower to detect the frock manufacturing cost, and is difficult for damaged, lower for the testing cost of master control borad, more be applicable to production line of batch in testing process.
For achieving the above object, described DC motor simulation detection fixture mainly includes:
Input interface is used for connecting the air conditioner master control borad that includes direct current motor drive circuit;
Power-switching circuit is from DC bus-bar voltage and the control level signal of input interface introducing air conditioner master control borad;
Direct current bus voltage detecting circuit connects power-switching circuit to detect DC bus-bar voltage;
The simulation detection fixture power circuit connects power-switching circuit and is delivered to frock CPU with the level signal that will be converted to 5V;
The pwm pulse change-over circuit is introduced the Vsp voltage signal of air conditioner master control borad and is delivered to frock CPU from input interface;
Frock CPU converts the AD value to for the Vsp voltage signal, and the AD value is delivered to display circuit with corresponding dc motor speed value; And, display circuit.
Such as above-mentioned basic scheme, identical with detection direct current generator material object is that master control borad is according to the dc fan of setting
Wind rating is by the debugging of PWM dutycycle and output Vsp voltage signal.
Different from detection direct current generator material object is, can be with the stable level signal that converts to after the Vsp voltage signal dividing potential drop below the 5V by the pwm pulse change-over circuit in the simulation detection fixture, convert thereof into the AD value that can directly be converted into dc motor speed by frock CPU, judge based on observable demonstration result whether direct current generator is up to standard.
Because above-mentioned simulation detection fixture is more simple in structure than the direct current generator, the connection between the circuit module is difficult for damaged, therefore can directly improve accuracy of detection and shorten test period, effectively reduces testing cost simultaneously.
For further improving the test closed-loop control of described simulation detection fixture, can take following innovative approach:
Described DC motor simulation detection fixture also includes a Fg who connects described frock CPU and input interface
The tacho-pulse feedback circuit of feedback signal terminal.
The tacho-pulse feedback circuit is uploaded to air conditioner master control borad according to the pulse signal that the dc motor speed value corresponding with the AD value converts to through the Fg of input interface feedback signal terminal with frock CPU.
Based on the design and use of above-mentioned DC motor simulation detection fixture structure, the present invention has also realized a kind of direct current generator analog detecting method.Particularly,
DC motor simulation detection fixture is connected air conditioner master control borad to be detected, whether frock CPU converts the dc motor speed value to and is delivered to display circuit according to the Vsp voltage signal from the input of air conditioner master control borad, up to standard to judge the direct current motor drive circuit in the air conditioner master control borad.
Described detection method includes following performing step:
(1) connects the air conditioner master control borad and carry out power-up initializing, introduce DC bus-bar voltage and 15V control level signal from input interface;
Whether (2) detect the DC bus-bar voltage of inputting is DC310V ± 10V,
If DC bus-bar voltage is then up to standard, carry out next step;
If not up to standard, then directly stop detecting and the feedback alarm signal;
(3) the pwm pulse change-over circuit is introduced the Vsp voltage signal of air conditioner master control borad and is delivered to frock CPU from input interface;
(4) frock CPU connects the AD value of Vsp voltage signal conversion and the dc motor speed value corresponding with the AD value Vsp magnitude of voltage and is delivered in the lump display circuit;
(5) in 1 week of blade rotary of the corresponding direct current generators of 12 pulses of setting, frock CPU converts pulse signal to and is uploaded to the air conditioner master control borad by input interface according to the AD value;
(6) corresponding data that shows according to display circuit judges whether an air conditioner master control borad that connects and detect is up to standard.
In sum, the advantage that has of DC motor simulation detection fixture of the present invention and method thereof is:
Adopt the Vsp voltage signal that simulation detection fixture receives and the conversion process master control borad is debugged, can substitute and finish the testing of direct current generator material object, assurance is higher to the accuracy in detection of dc fan driving circuit in the master control borad, testing process is direct, quick, and various detection data are intuitively readable.
To replace direct current generator in kind to detect frock, and the frock cost is lower and be conducive to reduce testing cost.
The detection frock is difficult for damaged, and testing process is simple and practical, more is applicable to the production line of batch of air conditioner master control borad.
Description of drawings
Now the present invention is described further by reference to the accompanying drawings
Fig. 1 is the circuit theory diagrams of described simulation detection fixture;
Fig. 2 is the circuit module synoptic diagram of described simulation detection fixture;
Embodiment
Embodiment 1, and as depicted in figs. 1 and 2, the DC motor simulation detection fixture that is applicable to transducer air conditioning is main
Include:
Input interface is used for connecting the air conditioner master control borad that includes direct current motor drive circuit, has DC bus-bar voltage DC310V end, GND earth terminal, 15V control level end, Vsp voltage signal receiving end and Fg feedback signal output terminal;
Power-switching circuit is from DC bus-bar voltage and the control level signal of input interface introducing air conditioner master control borad;
Direct current bus voltage detecting circuit connects power-switching circuit to detect DC bus-bar voltage, when bus voltage value exceeds the scope of DC310V ± 10V, stops detecting and the feedback alarm signal;
The simulation detection fixture power circuit connects power-switching circuit and is delivered to frock CPU with the level signal that will be converted to 5V;
The pwm pulse change-over circuit is introduced the Vsp voltage signal of air conditioner master control borad and is delivered to frock CPU from input interface;
Frock CPU converts the AD value to for the Vsp voltage signal, and the AD value is delivered to display circuit with corresponding dc motor speed value;
Display circuit, in order to showing the Vsp voltage signal, the AD value that is converted to by frock CPU and the dc motor speed value corresponding with the AD value;
The tacho-pulse feedback circuit, the Fg feedback signal terminal of connecting tooling CPU and input interface, the pulse signal so that the frock CPU basis dc motor speed value corresponding with the AD value converted to is uploaded to the air conditioner master control borad through the Fg of input interface feedback signal terminal.
Based on the simulation detection fixture in the present embodiment, for the testing process of the air conditioner master control borad that includes direct current motor drive circuit be:
(1) connects the air conditioner master control borad and carry out power-up initializing, introduce DC bus-bar voltage and 15V control level signal from input interface;
Whether (2) detect the DC bus-bar voltage of inputting is DC310V ± 10V,
If DC bus-bar voltage is then up to standard, carry out next step;
If not up to standard, then directly stop detecting and the feedback alarm signal;
(3) the air conditioner master control borad is regulated the PWM dutycycle according to the dc fan rated speed, with debugging and output Vsp voltage signal;
The pwm pulse change-over circuit is introduced the Vsp voltage signal and is delivered to frock CPU from input interface;
(4) frock CPU connects the AD value of Vsp voltage signal conversion and the dc motor speed value corresponding with the AD value Vsp magnitude of voltage and is delivered in the lump display circuit;
(5) set 1 week of blade rotary of the corresponding direct current generators of 12 pulses, frock CPU converts the pulse signal of corresponding ratio quantity to according to the AD value, and is uploaded to the air conditioner master control borad by input interface;
(6) corresponding data that shows according to display circuit judges whether an air conditioner master control borad that connects and detect is up to standard.
Claims (2)
1. DC motor simulation detection fixture is characterized in that: include following circuit module,
Input interface is used for connecting the air conditioner master control borad that includes direct current motor drive circuit;
Power-switching circuit is from DC bus-bar voltage and the control level signal of input interface introducing air conditioner master control borad;
Direct current bus voltage detecting circuit connects power-switching circuit to detect DC bus-bar voltage;
The simulation detection fixture power circuit connects power-switching circuit and is delivered to the level signal that will be converted to 5V
Frock CPU;
The pwm pulse change-over circuit is introduced the Vsp voltage signal of air conditioner master control borad and is delivered to from input interface
Frock CPU;
Frock CPU converts the AD value to for the Vsp voltage signal, and the AD value is delivered to display circuit with corresponding dc motor speed value;
Display circuit, and,
The tacho-pulse feedback circuit connects the Fg feedback signal terminal of described frock CPU and input interface, with frock
CPU is uploaded to the air conditioner master control borad according to the pulse signal that the dc motor speed value corresponding with the AD value converts to through the Fg of input interface feedback signal terminal.
2. direct current generator analog detecting method is characterized in that: include following performing step,
(1) connects the air conditioner master control borad and carry out power-up initializing, introduce DC bus-bar voltage and 15V from input interface
The control level signal;
Whether (2) detect the DC bus-bar voltage of inputting is DC310V ± 10V,
If DC bus-bar voltage is then up to standard, carry out next step;
If not up to standard, then directly stop detecting and the feedback alarm signal;
(3) the pwm pulse change-over circuit is introduced the Vsp voltage signal of air conditioner master control borad and is delivered to frock CPU from input interface;
(4) frock CPU connects the AD value of Vsp voltage signal conversion and the dc motor speed value corresponding with the AD value Vsp magnitude of voltage and is delivered in the lump display circuit;
(5) in 1 week of blade rotary of the corresponding direct current generators of 12 pulses of setting, frock CPU converts pulse signal to and is uploaded to the air conditioner master control borad by input interface according to the AD value;
(6) corresponding data that shows according to display circuit judges whether an air conditioner master control borad that connects and detect is up to standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910312587 CN102116833B (en) | 2009-12-30 | 2009-12-30 | Simulation test tool for direct current motor and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910312587 CN102116833B (en) | 2009-12-30 | 2009-12-30 | Simulation test tool for direct current motor and method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102116833A CN102116833A (en) | 2011-07-06 |
| CN102116833B true CN102116833B (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910312587 Expired - Fee Related CN102116833B (en) | 2009-12-30 | 2009-12-30 | Simulation test tool for direct current motor and method thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102789230B (en) * | 2012-08-13 | 2014-11-19 | 海信（山东）空调有限公司 | Method for automatically detecting air conditioner outdoor unit control panel |
| CN105024592B (en) * | 2014-04-25 | 2017-11-10 | 中山大洋电机股份有限公司 | A kind of BLDC electrical faults State Feedback Approach and application BLDC motors, air-conditioning system |
| CN111912085B (en) * | 2020-05-22 | 2023-10-27 | 海信空调有限公司 | Driving circuit and air conditioner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1848660A (en) * | 2006-04-21 | 2006-10-18 | 海信集团有限公司 | Method for testing and regulating fan rotating speed in alignment of air conditioner new products system |
| CN200990578Y (en) * | 2006-12-29 | 2007-12-12 | 青岛海信空调有限公司 | Air conditioner DC brushless electric machine automatic regulating speed and measuring speed controller |
| CN101135596A (en) * | 2007-09-29 | 2008-03-05 | 南京康龙威科技实业有限公司 | Measurement control method taking DC electric machine as force measuring device and realizing device thereof |
| CN201804090U (en) * | 2009-12-30 | 2011-04-20 | 海信（山东）空调有限公司 | DC motor simulation detection fixture |
-
2009
- 2009-12-30 CN CN 200910312587 patent/CN102116833B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1848660A (en) * | 2006-04-21 | 2006-10-18 | 海信集团有限公司 | Method for testing and regulating fan rotating speed in alignment of air conditioner new products system |
| CN200990578Y (en) * | 2006-12-29 | 2007-12-12 | 青岛海信空调有限公司 | Air conditioner DC brushless electric machine automatic regulating speed and measuring speed controller |
| CN101135596A (en) * | 2007-09-29 | 2008-03-05 | 南京康龙威科技实业有限公司 | Measurement control method taking DC electric machine as force measuring device and realizing device thereof |
| CN201804090U (en) * | 2009-12-30 | 2011-04-20 | 海信（山东）空调有限公司 | DC motor simulation detection fixture |
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| CN102116833A (en) | 2011-07-06 |
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