Testing tool for PCBA (Printed Circuit Board Assembly) of brushless DC motor

Abstract

The embodiment of the utility model discloses a DC brushless motor PCBA test tool comprising a test board and a Hall detection board, the Hall detection board is integrated with a Hall detection circuit and a Hall interface, and the Hall detection circuit is electrically connected with the Hall interface. A main control chip circuit, a power supply circuit, a rotary encoder, a speed regulation terminal, a nixie tube and a reading interface correspondingly connected with the Hall interface are integrated on the test board, the speed regulation terminal is used for connecting the direct current brushless motor PCBA, and the main control chip circuit is electrically connected with the power supply circuit, the rotary encoder, the speed regulation terminal, the nixie tube and the reading interface. According to the utility model, the problems of manual operation time sequence and fatigue can be solved, and the test efficiency can be greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to direct current brushless motor PCBA test technical field especially relates to a kind of testing tool of direct current brushless motor PCBA. BACKGROUND

[0002] The existing direct current brushless motor PCBA test is mostly tested manually, and the motor operating condition is observed by human eye, and the result is judged subjectively by human. Fatigue misjudgment occurs by human judgment, and the test efficiency is low. INVENTION CONTENTS

[0003] The technical problem to be solved by the embodiment of the utility model is to provide a testing tool of direct current brushless motor PCBA to improve test efficiency.

[0004] To solve the above technical problem, the utility model embodiment proposes a kind of testing tool of direct current brushless motor PCBA, including test plate and hall detection plate, hall detection plate is integrated with Hall detection circuit and hall interface, Hall detection circuit and hall interface are electrically connected, test plate is integrated with main control chip circuit, power supply circuit, rotary encoder, speed regulating terminal, nixie tube and the reading interface corresponding to the connection of hall interface, speed regulating terminal is used to connect direct current brushless motor PCBA, main control chip circuit and power supply circuit, rotary encoder, speed regulating terminal, nixie tube and reading interface are electrically connected.

[0005] Further, the speed regulating terminal includes analog speed regulating terminal, PWM speed regulating terminal and CLOCK speed regulating terminal.

[0006] Further, test plate is also integrated with the LED circuit that is electrically connected with main control chip circuit, and the LED circuit includes 3 groups of LED lamp for showing VSP signal, CLK frequency signal, PWM duty cycle signal output state respectively.

[0007] Further, test plate is also integrated with the key circuit that is electrically connected with main control chip circuit.

[0008] Further, test plate is also integrated with the buzzer that is electrically connected with main control chip circuit.

[0009] Further, the test plate and hall detection plate have multiple groups.

[0010] The utility model has the advantages that the utility model can solve the timing problem of human operation, fatigue problem, and greatly improve test efficiency. DRAWINGS

[0011] Figure 1 It is the structure block diagram of the testing tool of direct current brushless motor PCBA of an embodiment of the utility model.

[0012] Figure 2 is a structure block diagram of a test tool of a direct-current brushless motor PCBA according to another embodiment of the utility model.

[0013] Figure 3 is a circuit diagram of a Hall detection board according to an embodiment of the utility model.

[0014] Figure 4 is a circuit diagram of a main control chip circuit according to an embodiment of the utility model.

[0015] Figure 5 is a circuit diagram of a speed regulating terminal and a reading interface according to an embodiment of the utility model.

[0016] Figure 6 is a circuit diagram of a power supply circuit according to an embodiment of the utility model.

[0017] Figure 7 is a circuit diagram of a rotary encoder according to an embodiment of the utility model.

[0018] Figure 8 is a circuit diagram of an LED circuit according to an embodiment of the utility model.

[0019] Figure 9 is a circuit diagram of a buzzer according to an embodiment of the utility model.

[0020] Figure 10 is a circuit diagram of a key circuit according to an embodiment of the utility model.

[0021] Figure 11 is a circuit diagram of a digital tube according to an embodiment of the utility model. DETAILED DESCRIPTION

[0022] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict, and the utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0023] In the embodiments of the utility model, if there is a directional indication (such as up, down, left, right, front, back, etc.), it is only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), if the specific posture changes, the directional indication also changes accordingly.

[0024] In addition, in the utility model, if the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features.

[0025] Please refer to Figures 1-11The utility model discloses a test tool of DC brushless motor PCBA includes test board and hall detection board.

[0026] The hall detection board is integrated with a hall detection circuit and a hall interface. The hall detection circuit and the hall interface are electrically connected. In a specific implementation, the hall detection board is mounted on a motor rotor. In addition, the hall detection board of the utility model can also use a rotating speed tester, image recognition, a photoelectric detection switch and other devices that can identify the operating state of the motor to achieve the same function. The hall detection board reads the operating state of the motor and transmits the result information to the test board.

[0027] The test board is integrated with a main control chip circuit, a power supply circuit, a rotary encoder, a speed regulating terminal, a digital tube and a reading interface corresponding to the hall interface. The speed regulating terminal is electrically connected to the power supply circuit. The speed regulating terminal is used to connect the DC brushless motor PCBA, and the power supply of the PCBA is supplied from the speed regulating terminal. The main control chip circuit is electrically connected to the power supply circuit, the rotary encoder, the speed regulating terminal, the digital tube and the reading interface. The encoder is used to set the program of the test board, and different motor test boards can be set with different parameters. After the setting is completed, the test board is powered on and directly automatically runs, and the worker does not need to operate the test board. The test board can set the parameters (the program part is prior art) according to the test steps required by the DC brushless motor PCBA, and sequentially output control signals to the PCBA board, so that the PCBA drives the motor to run according to the set state. The test board automatically judges whether the motor runs according to the set state by reading the motor state in real time. If correct, it is determined that the PCBA is normal, otherwise it is abnormal. The determination result can be displayed through sound or display. After setting the program according to the requirements of each project, the worker only needs to put the PCBA board on the customized tool, and after starting the test, the test result is displayed, and then the next board is tested.

[0028] As an embodiment, the speed regulating terminal includes an analog speed regulating terminal, a PWM speed regulating terminal and a CLOCK speed regulating terminal. Because the mainstream motor speed regulating signals at present have CLOCK, PWM and VSP, the utility model integrates three kinds of terminals, and different PCBA connects different terminals, so as to improve the test efficiency.

[0029] As an embodiment, the test board is further integrated with an LED circuit electrically connected to the main control chip circuit. The LED circuit includes three groups of LED lamps respectively used for displaying VSP signal, CLK frequency signal and PWM duty cycle signal output state.

[0030] As an embodiment, the test board is further integrated with a key circuit electrically connected to the main control chip circuit.

[0031] As an implementation mode, the test board is further integrated with a buzzer electrically connected with the master control chip circuit.

[0032] As an implementation mode, please refer to Figure 2 , the test board and the Hall detection board have multiple groups, and the power supply circuits of the multiple groups of test boards can be shared. The utility model can be infinitely expanded, for example, if the PCBA is a 12-puzzle board, it can be expanded to 12, and workers can directly test the entire puzzle board at a time, so the test efficiency is 12 times that of traditional manual testing.

[0033] The working principle of the utility model is as follows: the corresponding speed signal output by the master control chip circuit is transmitted to the PCBA through the speed regulating terminal, so that the PCBA operates according to the state set by the master control chip to drive the motor to work, the master control chip circuit reads the running state feedback of the motor through the Hall interface, and the master control chip circuit can judge whether the PCBA is working normally and display the result through the nixie tube, so as to realize that power-on, testing and completion are all realized by the master control chip circuit.

[0034] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalent scope.

Claims

1. A test fixture for a brushless DC motor PCBA, characterized in that, It includes a test board and a Hall effect detection board. The Hall effect detection board integrates a Hall effect detection circuit and a Hall effect interface, which are electrically connected. The test board integrates a main control chip circuit, a power supply circuit, a rotary encoder, a speed control terminal, a digital tube, and a reading interface corresponding to the Hall effect interface. The speed control terminal is used to connect to the DC brushless motor PCBA. The main control chip circuit, power supply circuit, rotary encoder, speed control terminal, digital tube, and reading interface are electrically connected.

2. The test fixture for a brushless DC motor PCBA as described in claim 1, characterized in that, The speed control terminals include analog speed control terminals, PWM speed control terminals, and CLOCK speed control terminals.

3. The test fixture for a brushless DC motor PCBA as described in claim 2, characterized in that, The test board also integrates an LED circuit that is electrically connected to the main control chip circuit. The LED circuit includes three groups of LEDs that are used to display the output status of the VSP signal, CLK frequency signal, and PWM duty cycle signal, respectively.

4. The test fixture for a brushless DC motor PCBA as described in claim 1, characterized in that, The test board also integrates a button circuit that is electrically connected to the main control chip circuit.

5. The test fixture for a brushless DC motor PCBA as described in claim 1, characterized in that, The test board also integrates a buzzer that is electrically connected to the main control chip circuit.

6. The test fixture for a brushless DC motor PCBA as described in claim 1, characterized in that, There are multiple sets of test boards and Hall effect detection boards.

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