CN210487920U - Water pump PCBA's detection device that rolls off production line - Google Patents
Water pump PCBA's detection device that rolls off production line Download PDFInfo
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- CN210487920U CN210487920U CN202020447150.8U CN202020447150U CN210487920U CN 210487920 U CN210487920 U CN 210487920U CN 202020447150 U CN202020447150 U CN 202020447150U CN 210487920 U CN210487920 U CN 210487920U
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Abstract
The utility model discloses a water pump PCBA's detection device that rolls off production line belongs to automatic detection technology field, including water pump relay module, signal processor, transposition relay module, current sensor, host computer and power, the PCB that has solved water pump controller rolls off production line and detects the technical problem, the utility model discloses can switch 4 different water pumps simultaneously and participate in the test, can simulate the operating condition of difference in the water pump 4, the test result is accurate, has saved test flow and test time, the utility model discloses can be effectively timely give the host computer with the test result feedback, very big simplification testers' operation flow, improved production efficiency.
Description
Technical Field
The utility model belongs to the technical field of the automatic detection, in particular to water pump PCBA's detection device that rolls off production line.
Background
After the water pump controller is pasted and before the water pump controller is welded to a water pump body, whether the controller has functional faults or not needs to be detected, and if yes, which place of the pasting link is needed to be checked. Therefore, the water pump controller offline detection table needs to be manufactured, whether the controller has functional faults or not is detected, and whether the chip of the PCBA (namely the controller) is abnormal or not needs to be detected after the PCB of the water pump controller is pasted. It is therefore necessary to make a corresponding test stand to verify that the PCBA is functioning properly.
The PCB input/output interface of the water pump controller comprises a three-phase interface U/V/W, a 12V power supply positive/negative line, a PWM IN, a PWM OUT and a LIN, wherein the three-phase interface U/V/W is used for being connected with a three-phase U/V/W of the motor;
12v power positive/negative lines for supplying power;
the PWM IN is a speed regulation control PWM signal access end;
the PWM OUT is a feedback PWM signal output end;
LIN is LIN communication terminal.
The main functional items as the functions of the water pump comprise: current, voltage, rotation speed and input and output PWM; the main detected conditions include: normal working condition, no load, locked rotor, overcurrent and reverse connection of the positive electrode and the negative electrode of the power supply.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a water pump PCBA's detection device that rolls off production line has solved water pump control ware's PCB and has rolled off production line detection's technical problem.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a water pump PCBA offline detection device comprises a water pump relay module, a signal processor, a reverse connection relay module, a current sensor, an upper computer and a power supply, wherein a plurality of test water pumps are electrically connected with the water pump relay module;
the water pump relay module is provided with a three-phase interface U/V/W which is connected with the three-phase power access interface;
the reverse relay module is provided with a power supply positive end, a power supply negative end and an LIN signal end, the current sensor is also connected in series between the power supply negative end and the reverse relay module, the power supply positive end is electrically connected with the power supply positive interface, the power supply negative end is electrically connected with the power supply negative interface, and the LIN signal end is electrically connected with the LIN interface;
the PWM input interface, the PWM feedback interface and the LIN interface are all electrically connected with a signal processor;
the upper computer is communicated with the signal processor;
the power supply is connected with the reverse relay module;
the water pump relay module is used for selecting one of the test water pumps to be electrically connected with the water pump driving interface of the tested circuit board;
the three-phase power access interface is correspondingly connected with a three-phase power interface of a motor of the test water pump through a water pump driving interface;
the reverse connection relay module is used for switching the positive electrode and the negative electrode of the power supply to be reversely or positively connected with the power supply positive interface and the power supply negative interface of the circuit board to be tested.
Preferably, the signal processor is an ARM controller and a peripheral circuit thereof, and the model of the ARM controller is S3C44B 0X.
Preferably, the upper computer is communicated with the signal processor through a serial port bus, and the upper computer is a computer with a serial port.
Preferably, the current sensor is a current transformer, and the current sensor is connected with an AD input end of the signal processor.
Preferably, the test water pump comprises 4 water pumps which are respectively used for testing a normal working state, an idle load state, a locked rotor state and an overcurrent state.
A water pump PCBA's detection device that rolls off production line, the technical problem of the PCB that has solved water pump controller detection that rolls off production line, the utility model discloses can switch 4 different water pumps simultaneously and participate in the test, can simulate different operating condition in the water pump 4, the test result is accurate, has saved test flow and test time, the utility model discloses can be effectively timely give the host computer with the test result feedback, very big simplification testing personnel's operation flow, improved production efficiency.
Drawings
FIG. 1 is a schematic diagram of the system connection of the present invention;
fig. 2 is a schematic diagram of the interface connection of the circuit board under test according to the present invention.
Detailed Description
The offline detection device for the water pump PCBA comprises a water pump relay module, a signal processor, a reverse connection relay module, a current sensor, an upper computer and a power supply, wherein a plurality of test water pumps are electrically connected with the water pump relay module, and a water pump driving interface, a three-phase power access interface, a power supply positive interface, a power supply negative interface, a PWM input interface, a PWM feedback interface and an LIN interface are arranged on a tested circuit board;
PCBA (Printed Circuit Board + Assembly) Circuit Board, water pump PCBA, namely the water pump control Circuit Board; PCB, i.e. Printed Circuit Board, empty Circuit Board.
The water pump relay module is provided with a three-phase interface U/V/W which is connected with the three-phase power access interface;
the reverse relay module is provided with a power supply positive end, a power supply negative end and an LIN signal end, the current sensor is also connected in series between the power supply negative end and the reverse relay module, the power supply positive end is electrically connected with the power supply positive interface, the power supply negative end is electrically connected with the power supply negative interface, and the LIN signal end is electrically connected with the LIN interface;
the PWM input interface, the PWM feedback interface and the LIN interface are all electrically connected with a signal processor;
the upper computer is communicated with the signal processor;
the power supply is connected with the reverse relay module;
the water pump relay module is used for selecting one of the test water pumps to be electrically connected with the water pump driving interface of the tested circuit board;
the three-phase power access interface is correspondingly connected with a three-phase power interface of a motor of the test water pump through a water pump driving interface;
the reverse connection relay module is used for switching the positive electrode and the negative electrode of the power supply to be reversely or positively connected with the power supply positive interface and the power supply negative interface of the circuit board to be tested.
Preferably, the signal processor is an ARM controller and a peripheral circuit thereof, and the model of the ARM controller is S3C44B 0X.
Preferably, the upper computer is communicated with the signal processor through a serial port bus, and the upper computer is a computer with a serial port.
Preferably, the current sensor is a current transformer, and the current sensor is connected with an AD input end of the signal processor.
Preferably, the test water pump comprises 4 water pumps which are respectively used for testing a normal working state, an idle load state, a locked rotor state and an overcurrent state.
Key variables of water pump offline detection are shown in table 1:
TABLE 1
To the detection of various operating modes, need want to be connected controller and different water pumps, for realizing this function, the utility model discloses a relay module is constituteed to a plurality of relays and is realized.
Because the water pump uses the three-phase motor, switch each time and all switch three-phase together, so the relay module only is used for switching between each water pump, namely, select the three-phase electric interface U/V/W of certain water pump to connect on the water pump drive interface of circuit board under test.
The detection to the positive negative pole reversal of power the utility model discloses a reversal relay module realizes, promptly, constitutes the reversal relay module through four relays, and four relays divide into two pairs, and a pair of positive connecing, the other end that is used for realizing the positive negative pole of power are used for realizing the reversal of positive negative pole of voltage.
The utility model discloses an ARM controller and peripheral circuit constitute signal processor, and its specific interface is as shown in table 2:
TABLE 2
The serial port communication is a UART interface of an ARM controller, LIN communication adopts tle7259 as an LIN bus module to realize LIN communication, the transmission of PWM signals is realized through an IO port of the ARM controller by a transmission speed-regulating PWM water supply pump controller, the reception of the PWM signals is realized through the IO port of the ARM controller by detecting input and output PWM signals, current and voltage detection is realized through an AD input end of the ARM controller, relay control is the drive control of the ARM controller on a water pump relay module and a reverse connection relay module, the drive control is realized through the IO port of the ARM controller, and the control of an indicator lamp is realized through the IO port of the ARM controller.
The utility model discloses can connect 4 test water pumps simultaneously to realize the connection switching between these 4 test water pumps and the circuit board tested, the user can self-define the operating condition of these 4 test water pumps, in this embodiment, define these 4 test water pumps as normal operating water pump, no-load operating water pump, locked-rotor water pump and overflow water pump respectively, the utility model discloses when testing circuit board tested, including test power supply prevent the function of reversing, test whether normal water pump work is normal, test whether no-load water pump work is normal, test whether locked-rotor water pump work is normal and test whether overflow water pump work is normal;
the test power supply reverse connection prevention function comprises the steps that a normal working water pump is selected through the water pump relay module to serve as a test water pump, the test water pump is connected to a water pump driving interface of a tested circuit board, then the reverse connection of the power supply on the tested circuit board is achieved through the reverse connection relay module, and whether the signal transmitted through the current sensor is qualified or not is judged: if the signal is 0, the signal is qualified; otherwise, the product is qualified.
The testing whether the normal water pump works normally comprises the steps that the water pump relay module selects the normal working water pump as a testing water pump, the positive end of a power supply is connected to the positive interface of the power supply of the circuit board to be tested through the reverse connection relay module, the signal processor records signals transmitted by the LIN bus, and whether the voltage, the current and the rotating speed in the signals transmitted by the LIN bus reach preset target values or not is judged, so that whether the circuit board to be tested is qualified or not is judged.
And the step of testing whether the no-load water pump works normally comprises the step of selecting the no-load water pump as a test water pump and judging whether to feed back no-load faults or not through signals transmitted by the LIN bus.
And the step of testing whether the locked-rotor water pump works normally comprises the steps of selecting the locked-rotor water pump as a test water pump, comparing whether the voltage, the current and the rotating speed are consistent with target values through signals transmitted by the LIN bus, and judging whether the locked-rotor fault is fed back or not, thereby judging whether the tested circuit board is qualified or not.
And the step of testing whether the overcurrent water pump works normally comprises the steps of selecting the overcurrent water pump as a test water pump, comparing whether the voltage, the current and the rotating speed are consistent with target values through signals transmitted by the LIN bus, and feeding back whether the overcurrent fault occurs or not, so that whether the tested circuit board is qualified or not is judged.
A water pump PCBA's detection device that rolls off production line, the technical problem of the PCB that has solved water pump controller detection that rolls off production line, the utility model discloses can switch 4 different water pumps simultaneously and participate in the test, can simulate different operating condition in the water pump 4, the test result is accurate, has saved test flow and test time, the utility model discloses can be effectively timely give the host computer with the test result feedback, very big simplification testing personnel's operation flow, improved production efficiency.
Claims (5)
1. The utility model provides a water pump PCBA's detection device that rolls off production line which characterized in that: the device comprises a water pump relay module, a signal processor, a reverse connection relay module, a current sensor, an upper computer and a power supply, wherein a plurality of test water pumps are electrically connected with the water pump relay module;
the water pump relay module is provided with a three-phase interface U/V/W which is connected with the three-phase power access interface;
the reverse relay module is provided with a power supply positive end, a power supply negative end and an LIN signal end, the current sensor is also connected in series between the power supply negative end and the reverse relay module, the power supply positive end is electrically connected with the power supply positive interface, the power supply negative end is electrically connected with the power supply negative interface, and the LIN signal end is electrically connected with the LIN interface;
the PWM input interface, the PWM feedback interface and the LIN interface are all electrically connected with a signal processor;
the upper computer is communicated with the signal processor;
the power supply is connected with the reverse relay module;
the water pump relay module is used for selecting one of the test water pumps to be electrically connected with the water pump driving interface of the tested circuit board;
the three-phase power access interface is correspondingly connected with a three-phase power interface of a motor of the test water pump through a water pump driving interface;
the reverse connection relay module is used for switching the positive electrode and the negative electrode of the power supply to be reversely or positively connected with the power supply positive interface and the power supply negative interface of the circuit board to be tested.
2. An off-line detection device for a water pump PCBA as claimed in claim 1, wherein: the signal processor is an ARM controller and a peripheral circuit thereof, and the model of the ARM controller is S3C44B 0X.
3. An off-line detection device for a water pump PCBA as claimed in claim 1, wherein: the upper computer is communicated with the signal processor through a serial port bus, and is a computer with a serial port.
4. An off-line detection device for a water pump PCBA as claimed in claim 1, wherein: the current sensor is a current transformer and is connected with the AD input end of the signal processor.
5. An off-line detection device for a water pump PCBA as claimed in claim 1, wherein: the test water pump comprises 4 water pumps which are respectively used for testing a normal working state, an idle load state, a locked rotor state and an overcurrent state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020447150.8U CN210487920U (en) | 2020-03-31 | 2020-03-31 | Water pump PCBA's detection device that rolls off production line |
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| CN202020447150.8U CN210487920U (en) | 2020-03-31 | 2020-03-31 | Water pump PCBA's detection device that rolls off production line |
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| CN210487920U true CN210487920U (en) | 2020-05-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163452A (en) * | 2022-06-20 | 2022-10-11 | 深圳拓邦股份有限公司 | Method, device and equipment for detecting compressor without real object and readable storage medium |
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2020
- 2020-03-31 CN CN202020447150.8U patent/CN210487920U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163452A (en) * | 2022-06-20 | 2022-10-11 | 深圳拓邦股份有限公司 | Method, device and equipment for detecting compressor without real object and readable storage medium |
| CN115163452B (en) * | 2022-06-20 | 2024-02-09 | 深圳拓邦股份有限公司 | Method, device and equipment for detecting non-physical compressor and readable storage medium |
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