CN111381145A - Servo driver board functional test device - Google Patents
Servo driver board functional test device Download PDFInfo
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- CN111381145A CN111381145A CN201811608545.5A CN201811608545A CN111381145A CN 111381145 A CN111381145 A CN 111381145A CN 201811608545 A CN201811608545 A CN 201811608545A CN 111381145 A CN111381145 A CN 111381145A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2832—Specific tests of electronic circuits not provided for elsewhere
- G01R31/2834—Automated test systems [ATE]; using microprocessors or computers
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- Control Of Electric Motors In General (AREA)
Abstract
The invention relates to a function testing device for a servo driver driving plate, which comprises a single chip microcomputer, a power supply and bus voltage detection circuit, an alarm detection circuit, a control circuit, a current and PWM output detection circuit, an interface unit and a liquid crystal screen, wherein the interface unit is connected with the servo driver driving plate, the single chip microcomputer is used for detecting whether bus voltage signals and switching power supply signals exceed the limit, detecting whether IPM and an over-temperature alarm circuit can report warning information or not, controlling a relay to enable an MOS (metal oxide semiconductor) tube to be discharged or not, outputting six PWM signals to the driving plate to enable a motor to operate according to U-phase and W-phase current signals of the motor of the driving plate, and controlling the liquid crystal screen to display the detection values in. The testing device can be automatically carried out, the whole function test of one driving plate can be completed only by connecting a testing personnel with a testing system and simply operating, the production efficiency and the testing reliability are greatly improved, the testing safety is improved, and the testing device has very strong practical application value.
Description
Technical Field
The invention relates to a function test of a servo driver board, in particular to an automatic test device for batch products, which improves the production efficiency and the test reliability.
Background
Due to uncontrollable property in the process of processing products, various functional problems of the products are caused. The increase of the number of mass production also increases the test difficulty and the working strength of production personnel. If the product is not completely tested and sold to the customer, this can severely increase the product's rework rate and reduce brand public praise. If the testing method is not efficient enough, the testing personnel can be in a mess under the condition of requiring a construction period, so that the problems of not fine testing, not active work and the like are caused. If no test device is available, a tester can easily stick a test pen to pins of a device to cause short circuit when testing a driving plate by using a lead or a multimeter, and the device can be seriously ignited and exploded to cause danger.
Disclosure of Invention
In view of the above-mentioned deficiencies in the prior art, the present invention aims to provide an automatic test device for batch products, which improves the production efficiency and increases the test reliability.
The technical scheme adopted by the invention for realizing the purpose is as follows: a servo driver drive board function testing device comprises a single chip microcomputer, a peripheral circuit, an interface unit and a liquid crystal display screen; the interface unit is connected with the servo driver driving board, the single chip microcomputer detects signals of the servo driver driving board collected by the peripheral circuit and outputs control signals to the driving board, and the liquid crystal screen displays the collected signals and fault states in real time.
The interface unit is a plug interface or a needle plate interface.
The peripheral circuit includes: the device comprises a power supply and bus voltage detection circuit, an alarm detection circuit, a control circuit and a current and PWM output detection circuit;
the power supply and bus voltage detection circuit respectively collects bus voltage signals and switching power supply signals of the driving plate to GPIO ports of the single chip microcomputer; the alarm detection circuit is used for collecting IPM and over-temperature alarm signals of the drive board; the control circuit is used for collecting voltage signals of a discharge MOS tube of the drive plate; and the current and PWM output detection circuit is used for acquiring motor signals of the drive plate.
The power supply and bus voltage detection circuit comprises two branches: one path of the circuit consists of a transformer and an operational amplification circuit and is used for collecting bus voltage signals of the driving plate; one path of the power supply circuit consists of a voltage dividing resistor and an operational amplifier circuit and is used for collecting a switching power supply signal.
The alarm detection circuit includes: the GPIO port of the singlechip outputs high/low level signals, the high/low level signals are led to the IPM of the drive plate through the needle plate interface of the interface unit and input over-temperature alarm, and the feedback signals output by alarm are led back to the GPIO port of the singlechip through the needle plate interface.
The control circuit includes: the GPIO port of the single chip microcomputer outputs a voltage signal to the relay, the relay is connected with the grid electrode of the discharge MOS tube of the driving plate, the relay controls the discharge MOS tube to work, the source electrode of the MOS tube is connected with the buzzer, and the drain electrode of the MOS tube is grounded.
The current and PWM output detection circuit comprises two branches formed by an operational amplifier circuit and a PWM output circuit, collects U-phase and W-phase current signals of a motor of the drive board, converts the U-phase and W-phase current signals into voltage values required by the single chip microcomputer, is connected to two ADC paths of the single chip microcomputer, and outputs six PWM signals to the drive board.
The power supply and bus voltage detection circuit, the control circuit and the current and PWM output detection circuit are connected with the drive board through plug interfaces.
The single chip microcomputer is used for detecting whether bus voltage signals and switching power supply signals exceed limits, detecting whether the IPM and the over-temperature alarm circuit can report warning information or not, controlling the relay to enable the MOS tube to be released or not, outputting six paths of PWM signals to the drive plate to enable the motor to operate according to U-phase and W-phase current signals of the motor of the drive plate, and controlling the liquid crystal screen to display the detection values in real time and display fault alarm information when a fault occurs.
The single chip microcomputer is connected with the liquid crystal screen through a serial port.
The invention has the following beneficial effects and advantages:
the testing device of the invention can automatically carry out the test, and can complete the whole function test of one driving plate only by connecting a tester with the testing system and carrying out simple operation, thereby greatly improving the production efficiency and the testing reliability. Meanwhile, a tester does not need to excessively approach the driving plate, a test pen or a lead is not needed to test the contact, danger is avoided, and the method has a very strong practical application value.
Drawings
FIG. 1 is a schematic diagram of a servo driver board function testing device according to the present invention;
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, a device for testing the function of a drive board of a servo driver comprises a single chip microcomputer and a peripheral circuit thereof for detection and control; an interface plug is used for leading out signals on the driving plate; some signals which are inconvenient to be led out by using the plug are led out by using a needle plate; and the liquid crystal screen is used for displaying various acquired information and fault states. Power and bus voltage detection circuitry: the bus part firstly reduces the voltage through a transformer on a driving board to be tested, then the voltage of the bus is reduced to be within a range of-5-0V through resistance voltage division, and then the voltage is reduced to be within a range of 0-3V through an operational amplification circuit on a testing board and is directly sent to an AD sampling unit of the singlechip. The output voltage of the switch power supply on the drive board is mainly to lead each voltage signal to the test board through the needle board and the plug interface, and the voltages of different ground planes are isolated from the ground of the single chip microcomputer through the isolation optocoupler. Then the voltage is reduced to 0-3V through a resistance voltage division and operation circuit and is connected to an ADC of the single chip microcomputer. And through the processing of an internal program of the single chip microcomputer, if the voltage is normal within a specified range, the liquid crystal display screen does not give alarm information within the range. The alarm detection circuit: the high or low level is output by GPIO of the single chip microcomputer and is led to the IPM and the over-temperature alarm input part of the drive plate through the pin plate plug interface, the alarm output signal is led back to the GPIO of the single chip microcomputer through the pin plate interface, and whether the alarm circuit of the drive plate can work normally is judged according to the level. The control circuit: the relay is controlled to output a voltage which can enable the discharging MOS tube to be switched on through the GPIO. The source electrode of the MOS tube is connected with a buzzer and a divider resistor which replace a discharge resistor, and the drain electrode is grounded. If the click sound of the relay and the buzz sound of the buzzer are heard successively, the fact that the leakage circuit can work normally is represented. Current and PWM output detection circuit: the U-phase and W-phase current detection of the motor is converted into the voltage value required by the single chip microcomputer through the operation circuit, and the voltage value is connected to two ADC paths of the single chip microcomputer to control six PWM outputs. If the motor normally operates, the motor passes, otherwise, the liquid crystal screen gives alarm information.
The specific working process is as follows: after the test board is connected with the drive board, a key is pressed to start a test program, and the single chip microcomputer tests functions of all modules of the drive board in a certain sequence. Firstly, whether each voltage is normal is tested, if not, the alarm is given immediately, the power supply of the driving board is cut off, and the alarm information is displayed on the liquid crystal screen. And then testing whether the IPM and the over-temperature alarm circuit can report the alarm information. And then whether the control circuit can normally control the relay and the MOS tube is judged. And finally, testing whether the current detection and PWM output circuit can enable the motor to normally operate. The program stops after the test is completed.
The circuit comprises a single chip microcomputer, a peripheral interface circuit of the single chip microcomputer comprises three ADC circuits, and the circuit is used for monitoring whether each voltage of a driving plate and the phase current of a motor are normal or not. The GPIO is used for controlling the on-off of the switch and the change of the alarm level. Six PWM output signals are included to control the operation of the motor. The device comprises a serial interface for communicating with a liquid crystal screen, and can display a voltage value and alarm information on the screen in real time. Some arithmetic circuits are included to convert the voltage signal.
The core chip of the system adopts STM32F103RCT6 single chip microcomputer of ST company, ADC has higher precision, sufficient GPIO and higher turnover frequency, PWM is controllable and has complementary function, communication interface is abundant, and all control detection and communication functions are realized.
The computing circuit adopts TL082 of TI company, has the characteristics of single-double power supply, wide voltage input, high common-mode rejection ratio, slew rate and the like, and can accurately convert detected voltage signals into signals which can be received by a single chip.
Claims (10)
1. A servo driver board function testing device is characterized by comprising a single chip microcomputer, a peripheral circuit, an interface unit and a liquid crystal display screen; the interface unit is connected with the servo driver driving board, the single chip microcomputer detects signals of the servo driver driving board collected by the peripheral circuit and outputs control signals to the driving board, and the liquid crystal screen displays the collected signals and fault states in real time.
2. A servo driver board function testing apparatus as claimed in claim 1 wherein said interface unit is a plug interface or a pin plate interface.
3. A servo driver board function test apparatus according to claim 1, wherein said peripheral circuit comprises: the device comprises a power supply and bus voltage detection circuit, an alarm detection circuit, a control circuit and a current and PWM output detection circuit;
the power supply and bus voltage detection circuit respectively collects bus voltage signals and switching power supply signals of the driving plate to GPIO ports of the single chip microcomputer; the alarm detection circuit is used for collecting IPM and over-temperature alarm signals of the drive board; the control circuit is used for collecting voltage signals of a discharge MOS tube of the drive plate; and the current and PWM output detection circuit is used for acquiring motor signals of the drive plate.
4. A servo driver board function test apparatus as claimed in claim 3 wherein said power and bus voltage detection circuit comprises two branches: one path of the circuit consists of a transformer and an operational amplification circuit and is used for collecting bus voltage signals of the driving plate; one path of the power supply circuit consists of a voltage dividing resistor and an operational amplifier circuit and is used for collecting a switching power supply signal.
5. A servo driver board function test apparatus as defined in claim 3 wherein said alarm detection circuit comprises: the GPIO port of the singlechip outputs high/low level signals, the high/low level signals are led to the IPM of the drive plate through the needle plate interface of the interface unit and input over-temperature alarm, and the feedback signals output by alarm are led back to the GPIO port of the singlechip through the needle plate interface.
6. A servo driver board function testing apparatus according to claim 3, wherein said control circuit comprises: the GPIO port of the single chip microcomputer outputs a voltage signal to the relay, the relay is connected with the grid electrode of the discharge MOS tube of the driving plate, the relay controls the discharge MOS tube to work, the source electrode of the MOS tube is connected with the buzzer, and the drain electrode of the MOS tube is grounded.
7. The servo driver drive board function test device according to claim 3, wherein the current and PWM output detection circuit comprises two branches formed by an operational amplifier circuit and a PWM output circuit, collects U-phase and W-phase current signals of a motor of the drive board and converts the signals into voltage values required by a single chip microcomputer, is connected to two ADC of the single chip microcomputer, and outputs six PWM signals to the drive board.
8. The servo driver board function test apparatus as recited in claim 3, wherein said power and bus voltage detection circuit, control circuit, current and PWM output detection circuit are connected to the driver board through a plug interface.
9. The servo driver drive board function test device of claim 3, wherein the single chip microcomputer is used for detecting whether bus voltage signals and switching power supply signals exceed limits, detecting whether IPM and an over-temperature alarm circuit can report warning information or not, controlling a relay to enable an MOS (metal oxide semiconductor) tube to be released or not, outputting six paths of PWM (pulse-width modulation) signals to the drive board to enable a motor to operate according to U-phase and W-phase current signals of the motor of the drive board, and controlling a liquid crystal screen to display the detection values in real time and display fault alarm information when a fault occurs.
10. The device for testing the function of the driving board of the servo driver as claimed in any one of claims 1 to 9, wherein the single chip microcomputer is connected with the liquid crystal screen through a serial port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811608545.5A CN111381145A (en) | 2018-12-27 | 2018-12-27 | Servo driver board functional test device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811608545.5A CN111381145A (en) | 2018-12-27 | 2018-12-27 | Servo driver board functional test device |
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| CN111381145A true CN111381145A (en) | 2020-07-07 |
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| CN201811608545.5A Pending CN111381145A (en) | 2018-12-27 | 2018-12-27 | Servo driver board functional test device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113960983A (en) * | 2021-10-26 | 2022-01-21 | 上海新纪元机器人有限公司 | Data storage method and system of servo driving device and servo driving device |
| CN114089025A (en) * | 2020-08-25 | 2022-02-25 | 广东博智林机器人有限公司 | Detection device and drive system |
| CN114509700A (en) * | 2022-01-14 | 2022-05-17 | 苏州浪潮智能科技有限公司 | Device and method for testing CRPS power supply of server |
| CN117666446A (en) * | 2024-01-30 | 2024-03-08 | 湖南高至科技有限公司 | Servo control driver test system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114089025A (en) * | 2020-08-25 | 2022-02-25 | 广东博智林机器人有限公司 | Detection device and drive system |
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| CN117666446B (en) * | 2024-01-30 | 2024-04-19 | 湖南高至科技有限公司 | Servo control driver test system |
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Address after: Nanping Road in Dongling District of Shenyang city of Liaoning Province, No. 110168 16-2 Applicant after: Shenyang Zhongke CNC Technology Co.,Ltd. Address before: Nanping Road in Dongling District of Shenyang city of Liaoning Province, No. 110168 16-2 Applicant before: Shenyang Golding Nc Intelligence Tech.co.,ltd. |
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Application publication date: 20200707 |