Control panel test tool

Abstract

The utility model discloses a control panel test tool which comprises a power supply, a single-chip microcomputer, a key circuit, a voltage test circuit, an indicating lamp circuit, an alarm circuit, a drive circuit and a current acquisition circuit. According to the utility model, the control panel detection tool is connected with a power supply and a load resistor, and the detected controller is connected with the tool. A to-be-tested control panel is placed in the test tool, the tool table is pressed down, and the power supply is automatically powered on for test detection. The single-chip microcomputer judges whether the control panel to be tested is qualified according to voltage and level feedback values, the LED and the buzzer are used for displaying test results after the test is finished, if the test is poor, the buzzer is continuously buzzed by turning on a red light, and the buzzer is buzzed by turning on a green light after the test is finished, so that the efficiency is improved, and the cost is reduced.

Description

Technical Field

[0001] This application relates to the field of control board testing. Specifically, it relates to a control board testing tooling. Background Art

[0002] Currently, the production test process of controllers is quite cumbersome, involving numerous steps and complex operations. Human factors play an important role in this process, but this also increases the possibility of errors and mistakes. The passing standards of controllers entirely rely on the subjective judgment of workers, and this judgment method is often subjective, which may lead to a relatively high proportion of missed inspections.

[0003] In the prior art during the testing process, workers need to make judgments based on their own experience and skills, without an objective standard to measure. Moreover, most of the testing processes are one-to-one product tests, and this method requires a large amount of manpower and time.

[0004] Workers also need to manually perform the operations of connecting and disconnecting wires, and this operation process has low efficiency and high labor costs.

[0005] On some control boards to be tested, there are motors (such as the control board in the main unit, and sometimes the motor fans of the graphics card, etc. are integrated. In this case, the motor needs to be driven for the testing of the board). Traditional testing tooling cannot meet the testing under the drive of the motor, and there are few testing items. Currently, there is no suitable testing tooling for multi-dimensional data testing. Utility Model Content

[0006] The main purpose of this application is to provide a control board testing tooling to solve the problems in the prior art during the testing process, where workers need to make judgments based on their own experience and skills, without an objective standard to measure. Moreover, most of the testing processes are one-to-one product tests, and this method requires a large amount of manpower and time. Workers also need to manually perform the operations of connecting and disconnecting wires, and this operation process has low efficiency and high labor costs.

[0007] To achieve the above objective, this application provides the following technology: A control board testing tooling, the tooling includes a power supply, a single-chip microcomputer, a key circuit, a voltage testing circuit, an indicator light circuit, an alarm circuit, a driving circuit, and a current acquisition circuit;

[0008] The power supply is connected to the single-chip microcomputer circuit and is used to supply power to the single-chip microcomputer; the key circuit is connected to the single-chip microcomputer circuit and is used to control the on / off of the voltage test circuit; the voltage test circuit is connected to the single-chip microcomputer circuit and is used to test whether the voltage of the control board to be tested is within the allowable deviation range; the indicator light circuit is connected to the single-chip microcomputer circuit and is used to indicate whether the voltage of the control board to be tested is within the allowable deviation range; the alarm circuit is connected to the single-chip microcomputer circuit and is used to indicate whether the voltage of the control board to be tested is within the allowable deviation range; the drive circuit is connected to the single-chip microcomputer circuit and is used to drive the output voltage of the 6 MOS transistors of the control board to be tested, drive the motor, and enter the test; the current acquisition circuit is connected to the single-chip microcomputer circuit and is used to simulate the operation of the control board to be tested under high power and large current.

[0009] As an optional embodiment of the present invention, optionally, the power supply includes diode D1, diode D2, diode D3, diode D16, voltage regulator diode D10, voltage regulator diode D4, resistor R9, resistor R10, resistor R11, resistor R12, resistor R15, resistor R28, capacitor C9, capacitor C10, capacitor C11, capacitor C17, capacitor C20, capacitor C12, capacitor C13, capacitor C26, capacitor C22, capacitor C23, capacitor C24, capacitor C25, capacitor C19, transformer U1, voltage regulator U2, and inductor L1;

[0010] Among them, the input end of the diode D1 is connected to the positive pole of the power supply. The output end of the diode D1 is connected to one end of the resistor R9 and one end of the resistor R10. The other end of the resistor R9 and the other end of the resistor R10 are both connected to the input end of the capacitor C20, one end of the capacitor C17 is connected to the 5th pin of the transformer U1. The output end of the capacitor C20 and the other end of the capacitor C17 are both grounded. The 4th pin of the transformer U1 is connected to one end of the resistor R12, one end of the resistor R11 and one end of the capacitor C12. The 3rd pin of the transformer U1 is connected to one end of the capacitor C11. The other end of the capacitor C11 is connected to the 1st pin, 2nd pin, 6th pin, 7th pin of the transformer U1, the other end of the resistor R12, one end of the capacitor C10, one end of the inductor L1 and the output end of the diode D2. The input end of the diode D2 is grounded. The other end of the resistor R11 and the other end of the capacitor C12 are both connected to the other end of the capacitor C10 and the output end of the diode D3. The input end of the diode D3 is connected to one end of the resistor R15, the output end of the voltage regulator diode D10, one end of the capacitor C13, one end of the capacitor C26, the input end of the capacitor C9 and the other end of the inductor L1. The other end of the capacitor C13, the other end of the capacitor C26 and the output end of the capacitor C9 are all grounded. The other end of the resistor R15 is connected to one end of the capacitor C24, one end of the capacitor C22, the input end of the capacitor C23 and the 1st pin of the voltage regulator U2. The input end of the voltage regulator diode D10 is connected to the other end of the capacitor C24, the other end of the capacitor C22, the output end of the capacitor C23, the 2nd pin of the voltage regulator U2, the input end of the voltage regulator diode D4, the output end of the capacitor C19, one end of the capacitor C25 and one end of the resistor R28. The 3rd pin of the voltage regulator U2 is connected to the output end of the voltage regulator diode D4, the input end of the capacitor C19, the other end of the capacitor C25, the other end of the resistor R28 and the input end of the diode D16. The output end of the diode D16 is connected to the single-chip microcomputer.

[0011] As an alternative embodiment of the present invention, optionally, the key circuit includes a resistor R59, a resistor R60, a resistor R61, a capacitor C31, a capacitor C32, a capacitor C33, an interface J6, an interface J7, a switch KEY1, a switch KEY2 and a switch KEY3;

[0012] One end of the resistor R59, one end of the resistor R60 and one end of the resistor R61 are connected to a power supply. The other end of the resistor R59 is connected to one end of the capacitor C31 and the pin 1 of the interface J6. The other end of the resistor R60 is connected to one end of the capacitor C32 and the pin 2 of the interface J6. The other end of the resistor R61 is connected to one end of the capacitor C33 and the pin 3 of the interface J6. The other ends of the capacitor C31, the capacitor C32 and the capacitor C33 are connected to the pin 4 of the interface J6 and grounded. The pin 5 of the interface J6 is connected to the power supply. The pin 5 of the interface J7 is connected to the power supply. The switch KEY3 is connected to the pins 3 and 4 of the interface J7. The switch KEY2 is connected to the pins 3 and 2 of the interface J7. The switch KEY1 is connected to the pins 2 and 1 of the interface J7.

[0013] As an optional embodiment of the present invention, optionally, the voltage test circuit includes a first voltage test circuit, a second voltage test circuit and a third voltage test circuit;

[0014] The first voltage test circuit includes a resistor R24, a resistor R25 and a capacitor C8. One end of the resistor R24 is connected to the first test point of the control board to be tested. The other end of the resistor R24 is connected to one end of the resistor R25, one end of the capacitor C8 and the single-chip microcomputer. The other ends of the resistor R25 and the capacitor C8 are grounded;

[0015] The second voltage test circuit includes a resistor R29, a resistor R30 and a capacitor C29. One end of the resistor R29 is connected to the second test point of the control board to be tested. The other end of the resistor R29 is connected to one end of the resistor R30, one end of the capacitor C29 and the single-chip microcomputer. The other ends of the resistor R30 and the capacitor C29 are grounded;

[0016] The third voltage test circuit includes a resistor R22, a resistor R23 and a capacitor C6. One end of the resistor R22 is connected to the third test point of the control board to be tested. The other end of the resistor R22 is connected to one end of the resistor R23, one end of the capacitor C6 and the single-chip microcomputer. The other ends of the resistor R23 and the capacitor C6 are grounded.

[0017] As an optional embodiment of the present invention, optionally, the indicator light circuit includes a first normal indicator circuit, a normal operation indicator circuit, a second normal indicator circuit and a fault indicator circuit;

[0018] The first normal indicator circuit includes a resistor R17 and a light-emitting diode D6. One end of the resistor R17 is connected to the single-chip microcomputer. The other end of the resistor R17 is connected to the input end of the light-emitting diode D6. The output end of the light-emitting diode D6 is grounded;

[0019] The normal operation indication circuit includes resistor R18 and light-emitting diode D7; one end of resistor R18 is connected to the single-chip microcomputer, the other end of resistor R18 is connected to the input end of light-emitting diode D7, and the output end of light-emitting diode D7 is grounded;

[0020] The normal indication circuit includes resistor R19 and light-emitting diode D8; one end of resistor R19 is connected to the single-chip microcomputer, the other end of resistor R19 is connected to the input end of light-emitting diode D8, and the output end of light-emitting diode D8 is grounded;

[0021] The fault indication circuit includes resistor R20 and light-emitting diode D9; one end of resistor R20 is connected to the single-chip microcomputer, the other end of resistor R20 is connected to the input end of light-emitting diode D9, and the output end of light-emitting diode D9 is grounded.

[0022] As an optional embodiment of the present invention, optionally, the alarm circuit includes resistor R41, resistor R42, resistor R43, capacitor C28, triode Q10 and buzzer LS1;

[0023] One end of resistor R43 is connected to the power supply, the other end of resistor R43 is connected to pin 1 of buzzer LS1 and the input end of capacitor C28, the output end of capacitor C28 is grounded, pin 2 of buzzer LS1 is connected to the collector of triode Q10, the base of triode Q10 is connected to one end of resistor R41 and one end of resistor R42, the other end of resistor R41 is connected to the single-chip microcomputer, and the other end of resistor R42 and the emitter of triode Q10 are both grounded.

[0024] As an optional embodiment of the present invention, optionally, the drive circuit includes MOS transistors Q1, Q2, Q3, Q4, Q5, Q6, Q7, resistor R4, resistor R2, resistor R27, resistor R6, resistor R3, resistor R5, resistor R7, resistor R13, resistor R14, resistor R8, resistor R33, resistor R1, resistor R26, resistor R31, resistor R32, capacitor C2, capacitor C21, capacitor C18, relay K1 and relay K2;

[0025] Among them, the drain of MOS transistor Q1 is connected to the positive power supply, one end of resistor R27, the drain of MOS transistor Q3, one end of capacitor C21, and the drain of MOS transistor Q5. The gate of MOS transistor Q1 is connected to the single-chip microcomputer and one end of resistor R2. The other end of resistor R2 is connected to the source of MOS transistor Q1 and the drain of MOS transistor Q2. The gate of MOS transistor Q2 is connected to the single-chip microcomputer and one end of resistor R3. The other end of resistor R3 is connected to the source of MOS transistor Q2, the other end of resistor R27, one end of resistor R5, one end of resistor R7, the source of MOS transistor Q4, the source of MOS transistor Q6, the output end of capacitor C18, one end of resistor R14, the source of MOS transistor Q7, one end of capacitor C2, one end of resistor R8, one end of resistor R31, and one end of resistor R1. The gate of MOS transistor Q3 is connected to the single-chip microcomputer and one end of resistor R4. The other end of resistor R4 is connected to the source of MOS transistor Q3 and the drain of MOS transistor Q4. The gate of MOS transistor Q4 is connected to the single-chip microcomputer and the other end of resistor R5. The gate of MOS transistor Q5 is connected to the single-chip microcomputer and one end of resistor R6. The other end of resistor R6 is connected to the source of MOS transistor Q5 and the drain of MOS transistor Q6. The gate of MOS transistor Q6 is connected to the single-chip microcomputer and the other end of resistor R7. The gate of MOS transistor Q7 is connected to the other end of resistor R14 and one end of resistor R13. The other end of resistor R13 is connected to the voltage test circuit. The other end of capacitor C2 is connected to the other end of resistor R8 and the 3rd pin of relay K2. Resistor R33 is connected to the 5th pin of relay K1. The 7th pin of relay K1 is grounded. The other end of resistor R31 is connected to one end of resistor R32. The other end of resistor R32 is connected to the 2nd pin of relay K1. The other end of resistor R1 is connected to one end of resistor R26. The other end of resistor R26 is connected to the 4th pin of relay K1.

[0026] As an optional embodiment of the present invention, optionally, the current acquisition circuit includes resistor R72, resistor R63, resistor R56, resistor R61, resistor R79, resistor R82, resistor R78, resistor R87, resistor R88, resistor R86, resistor R81, capacitor C10, capacitor C34, capacitor C8, capacitor C27, capacitor C36, capacitor C37, diode D17, amplifier U3B, and amplifier U4B;

[0027] One end of the resistor R72 is connected to the power supply, and the other end of the resistor R72 is connected to the single-chip microcomputer, one end of the capacitor C10, and the pin 2 of the amplifier U3B. The other end of the capacitor C10 is grounded. The pin 5 of the U3B is connected to one end of the capacitor C27, the input end of the diode D17, one end of the resistor R79, one end of the capacitor C8, one end of the resistor R63, one end of the resistor R56, and one end of the resistor R61. The other ends of the capacitor C27, the capacitor C8, and the resistor R61 are grounded. The output end of the diode D17 is connected to the power supply. The other end of the resistor R63 is connected to one end of the capacitor C34 and the pin 4 of the amplifier U3B. The other end of the capacitor C34 is grounded. The other end of the resistor R79 is connected to one end of the resistor R82. The other end of the resistor R82 is connected to one end of the resistor R78, one end of the capacitor C36, and the pin 5 of the amplifier U4B. The other end of the resistor R78 is connected to the positive pole of the power supply. The other end of the capacitor C36 is grounded. The pin 6 of the amplifier U4B is connected to one end of the resistor R87 and one end of the resistor R88. The other end of the resistor R87 is grounded. The other end of the resistor R88 is connected to one end of the resistor R86. The other end of the resistor R86 is connected to the pin 7 of the amplifier U4B and one end of the resistor R81. The other end of the resistor R81 is connected to one end of the capacitor C37 and the single-chip microcomputer. The other end of the capacitor C37 is grounded.

[0028] Compared with the prior art, the present application can bring the following technical effects: The control board testing tooling of the present utility model is connected to the power supply, the load resistor, and the controller under test is connected to the tooling. The control board to be tested is placed in the testing tooling, the tooling table is pressed down, and the power supply is automatically powered on for testing. The single-chip microcomputer judges whether the control board to be tested is qualified according to the voltage and level feedback values. After the test is completed, the test results are displayed by the LED and the buzzer. If the test is bad, the red light is on and the buzzer sounds continuously. If the test passes, the green light is on and the buzzer sounds once. The test is completed. By the present utility model, the efficiency is improved and the cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings constituting a part of the present application are used to provide a further understanding of the present application, making other features, objectives, and advantages of the present application more obvious. The schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0030] Figure 1 is a schematic structural diagram of a control board testing tooling of the present utility model;

[0031] Figure 2 is a schematic power supply structure diagram of a control board testing tooling of the present utility model;

[0032] Figure 3 is a schematic key circuit structure diagram of a control board testing tooling of the present utility model;

[0033] Figure 4 It is a schematic diagram of the voltage test circuit structure of a control board test tooling of the present utility model;

[0034] Figure 5 It is a schematic diagram of the indicator light circuit structure of a control board test tooling of the present utility model;

[0035] Figure 6 It is a schematic diagram of the alarm circuit structure of a control board test tooling of the present utility model;

[0036] Figure 7 It is a schematic diagram of the drive circuit structure of a control board test tooling of the present utility model;

[0037] Figure 8 It is a schematic diagram of the current acquisition circuit structure of a control board test tooling of the present utility model;

[0038] Figure 9 It is a schematic diagram of the single-chip microcomputer structure of a control board test tooling of the present utility model. Specific implementation manners

[0039] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to describe the embodiments of this application here. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0041] In this application, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0042] Moreover, in addition to being used to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances.

[0043] In addition, the meaning of the term "plurality" should be two or more.

[0044] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will describe this application in detail with reference to the drawings and in combination with the embodiments.

[0045] In this embodiment, there is no requirement for the models of each electronic component, as long as it can work according to the circuit and principle of this application. The functions of each module can be understood in combination with the drawings of this embodiment.

[0046] A control board test tooling, the tooling includes a power supply, a single-chip microcomputer, a key circuit, a voltage test circuit, an indicator light circuit, an alarm circuit, a drive circuit and a current acquisition circuit;

[0047] As Figure 1 shown, the power supply is circuit-connected to the single-chip microcomputer and is used to supply power to the single-chip microcomputer; the key circuit is circuit-connected to the single-chip microcomputer and is used to control the on / off of the voltage test circuit; the voltage test circuit is circuit-connected to the single-chip microcomputer and is used to test whether the voltage of the control board to be tested is within the allowable deviation range; the indicator light circuit is circuit-connected to the single-chip microcomputer and is used to indicate whether the voltage of the control board to be tested is within the allowable deviation range; the alarm circuit is circuit-connected to the single-chip microcomputer and is used to indicate whether the voltage of the control board to be tested is within the allowable deviation range; the drive circuit is circuit-connected to the single-chip microcomputer and is used to drive the output voltage of the 6 MOS tubes of the control board to be tested, drive the motor and enter the test; the current acquisition circuit is circuit-connected to the single-chip microcomputer and is used to simulate the operation of the control board to be tested under high power and large current.

[0048] During use, connect the control board detection tooling to the power supply, load resistor, and the controller under test to the tooling. Place the control board to be tested into the test tooling, press down the tooling table, and the power supply will automatically power on for testing (power-on controlled by the single-chip microcomputer). The single-chip microcomputer determines whether the control board to be tested is qualified based on the voltage and level feedback values. After the test is completed, the test results are displayed using an LED (indicator light circuit) and a buzzer. If the test is defective, the red light will be on and the buzzer will sound continuously. If the test passes, the green light will be on and the buzzer will sound once. The test is over. The efficiency is improved and the cost is reduced by this utility model. As Figure 9 shown, the single-chip microcomputer is the core of the detection, detecting the voltage, signal level, and giving an alarm indication of whether the test passes. If the voltage test fails, the corresponding voltage red light will be on and the buzzer will sound continuously. If the voltage test passes, the corresponding voltage green light will be on and the buzzer will beep once to indicate that the test passes.

[0049] As an optional embodiment of the present utility model, optionally, the power supply includes diode D1, diode D2, diode D3, diode D16, voltage regulator diode D10, voltage regulator diode D4, resistor R9, resistor R10, resistor R11, resistor R12, resistor R15, resistor R28, capacitor C9, capacitor C10, capacitor C11, capacitor C17, capacitor C20, capacitor C12, capacitor C13, capacitor C26, capacitor C22, capacitor C23, capacitor C24, capacitor C25, capacitor C19, transformer U1, voltage regulator U2, and inductor L1;

[0050] Among them, the input end of the diode D1 is connected to the positive pole of the power supply. The output end of the diode D1 is connected to one end of the resistor R9 and one end of the resistor R10. The other end of the resistor R9 and the other end of the resistor R10 are both connected to the input end of the capacitor C20, one end of the capacitor C17 is connected to the 5th pin of the transformer U1. The output end of the capacitor C20 and the other end of the capacitor C17 are both grounded. The 4th pin of the transformer U1 is connected to one end of the resistor R12, one end of the resistor R11 and one end of the capacitor C12. The 3rd pin of the transformer U1 is connected to one end of the capacitor C11. The other end of the capacitor C11 is connected to the 1st pin, 2nd pin, 6th pin, 7th pin of the transformer U1, the other end of the resistor R12, one end of the capacitor C10, one end of the inductor L1 and the output end of the diode D2. The input end of the diode D2 is grounded. The other end of the resistor R11 and the other end of the capacitor C12 are both connected to the other end of the capacitor C10 and the output end of the diode D3. The input end of the diode D3 is connected to one end of the resistor R15, the output end of the voltage regulator diode D10, one end of the capacitor C13, one end of the capacitor C26, the input end of the capacitor C9 and the other end of the inductor L1. The other end of the capacitor C13, the other end of the capacitor C26 and the output end of the capacitor C9 are all grounded. The other end of the resistor R15 is connected to one end of the capacitor C24, one end of the capacitor C22, the input end of the capacitor C23 and the 1st pin of the voltage regulator U2. The input end of the voltage regulator diode D10 is connected to the other end of the capacitor C24, the other end of the capacitor C22, the output end of the capacitor C23, the 2nd pin of the voltage regulator U2, the input end of the voltage regulator diode D4, the output end of the capacitor C19, one end of the capacitor C25 and one end of the resistor R28. The 3rd pin of the voltage regulator U2 is connected to the output end of the voltage regulator diode D4, the input end of the capacitor C19, the other end of the capacitor C25, the other end of the resistor R28 and the input end of the diode D16. The output end of the diode D16 is connected to the single-chip microcomputer.

[0051] As Figure 2 shown, the power supply is bucked from DC input to 12V, and then linearly bucked from 12V to 5V. The 12V power supply drives two relays and a buzzer, and the 5V power supply supplies power to the single-chip microcomputer and related detections, as well as indicator lights and other related control circuits.

[0052] As an optional embodiment of the present invention, optionally, the key circuit includes a resistor R59, a resistor R60, a resistor R61, a capacitor C31, a capacitor C32, a capacitor C33, an interface J6, an interface J7, a switch KEY1, a switch KEY2 and a switch KEY3;

[0053] Among them, one end of the resistor R59, one end of the resistor R60, and one end of the resistor R61 are connected to the power supply. The other end of the resistor R59 is connected to one end of the capacitor C31 and the 1st pin of the interface J6. The other end of the resistor R60 is connected to one end of the capacitor C32 and the 2nd pin of the interface J6. The other end of the resistor R61 is connected to one end of the capacitor C33 and the 3rd pin of the interface J6. The other ends of the capacitor C31, the capacitor C32, and the capacitor C33 are connected to the 4th pin of the interface J6 and grounded. The 5th pin of the interface J6 is connected to the power supply; the 5th pin of the interface J7 is connected to the power supply. The switch KEY3 is connected to the 3rd pin and the 4th pin of the interface J7. The switch KEY2 is connected to the 3rd pin and the 2nd pin of the interface J7. The switch KEY1 is connected to the 2nd pin and the 1st pin of the interface J7.

[0054] As Figure 3 shown, the key circuit consists of 3 keys. Pressing the test key starts the test of the control board to be tested. Additionally, the keys can be disabled in the software, and the test starts immediately after power-on to improve the test efficiency.

[0055] As an optional embodiment of the present invention, optionally, the voltage test circuit includes a first voltage test circuit, a second voltage test circuit, and a third voltage test circuit;

[0056] The first voltage test circuit includes a resistor R24, a resistor R25, and a capacitor C8; one end of the resistor R24 is connected to the first test point of the control board to be tested. The other end of the resistor R24 is connected to one end of the resistor R25, one end of the capacitor C8, and the single-chip microcomputer. The other ends of the resistor R25 and the capacitor C8 are grounded;

[0057] The second voltage test circuit includes a resistor R29, a resistor R30, and a capacitor C29; one end of the resistor R29 is connected to the second test point of the control board to be tested. The other end of the resistor R29 is connected to one end of the resistor R30, one end of the capacitor C29, and the single-chip microcomputer. The other ends of the resistor R30 and the capacitor C29 are grounded;

[0058] The third voltage test circuit includes a resistor R22, a resistor R23, and a capacitor C6; one end of the resistor R22 is connected to the third test point of the control board to be tested. The other end of the resistor R22 is connected to one end of the resistor R23, one end of the capacitor C6, and the single-chip microcomputer. The other ends of the resistor R23 and the capacitor C6 are grounded.

[0059] As Figure 4 shown, the voltage test circuit tests the 5V and 15V voltages on the control board to be tested through the test points. When the single-chip microcomputer detects that the voltage is within the allowable deviation range, it lights up the indicator light and beeps the buzzer once, indicating that the voltage test is normal.

[0060] As an alternative embodiment of the present utility model, optionally, the indicator light circuit includes a first normal indication circuit, a normal operation indication circuit, a second normal indication circuit, and a fault indication circuit;

[0061] The first normal indication circuit includes a resistor R17 and a light-emitting diode D6; one end of the resistor R17 is connected to the single-chip microcomputer, the other end of the resistor R17 is connected to the input end of the light-emitting diode D6, and the output end of the light-emitting diode D6 is grounded;

[0062] The normal operation indication circuit includes a resistor R18 and a light-emitting diode D7; one end of the resistor R18 is connected to the single-chip microcomputer, the other end of the resistor R18 is connected to the input end of the light-emitting diode D7, and the output end of the light-emitting diode D7 is grounded;

[0063] The normal indication circuit includes a resistor R19 and a light-emitting diode D8; one end of the resistor R19 is connected to the single-chip microcomputer, the other end of the resistor R19 is connected to the input end of the light-emitting diode D8, and the output end of the light-emitting diode D8 is grounded;

[0064] The fault indication circuit includes a resistor R20 and a light-emitting diode D9; one end of the resistor R20 is connected to the single-chip microcomputer, the other end of the resistor R20 is connected to the input end of the light-emitting diode D9, and the output end of the light-emitting diode D9 is grounded.

[0065] As Figure 5 shown, in the first normal indication circuit, when the control board under test is in a normal operation state, the first normal indication circuit will indicate the normal state. In the normal operation indication circuit, when the control board under test is operating normally, the normal operation indication circuit will indicate the normal operation state. In the second normal indication circuit, when the control board under test is in a normal operation state, the second normal indication circuit will indicate the normal state. In the fault indication circuit, when the control board under test fails, the fault indication circuit will indicate the fault state.

[0066] As an alternative embodiment of the present utility model, optionally, the alarm circuit includes a resistor R41, a resistor R42, a resistor R43, a capacitor C28, a triode Q10, and a buzzer LS1;

[0067] One end of the resistor R43 is connected to the power supply, the other end of the resistor R43 is connected to the pin 1 of the buzzer LS1 and the input end of the capacitor C28, the output end of the capacitor C28 is grounded, the pin 2 of the buzzer LS1 is connected to the collector of the triode Q10, the base of the triode Q10 is connected to one end of the resistor R41 and one end of the resistor R42, the other end of the resistor R41 is connected to the single-chip microcomputer, and the other end of the resistor R42 and the emitter of the triode Q10 are both grounded.

[0068] As Figure 6As shown, when the single-chip microcomputer detects through the voltage test circuit that the voltage is within the allowable deviation range, it lights up the indicator light and makes the buzzer in the alarm circuit sound once, indicating that the voltage test is normal.

[0069] As Figure 8 shown, as an alternative embodiment of the present utility model, optionally, the drive circuit includes MOS transistor Q1, MOS transistor Q2, MOS transistor Q3, MOS transistor Q4, MOS transistor Q5, MOS transistor Q6, MOS transistor Q7, resistor R4, resistor R2, resistor R27, resistor R6, resistor R3, resistor R5, resistor R7, resistor R13, resistor R14, resistor R8, resistor R33, resistor R1, resistor R26, resistor R31, resistor R32, capacitor C2, capacitor C21, capacitor C18, relay K1 and relay K2;

[0070] Among them, the drain of MOS transistor Q1 is connected to the positive power supply, one end of resistor R27, the drain of MOS transistor Q3, one end of capacitor C21, and the drain of MOS transistor Q5. The gate of MOS transistor Q1 is connected to the single-chip microcomputer and one end of resistor R2. The other end of resistor R2 is connected to the source of MOS transistor Q1 and the drain of MOS transistor Q2. The gate of MOS transistor Q2 is connected to the single-chip microcomputer and one end of resistor R3. The other end of resistor R3 is connected to the source of MOS transistor Q2, the other end of resistor R27, one end of resistor R5, one end of resistor R7, the source of MOS transistor Q4, the source of MOS transistor Q6, the output end of capacitor C18, one end of resistor R14, the source of MOS transistor Q7, one end of capacitor C2, one end of resistor R8, one end of resistor R31, and one end of resistor R1. The gate of MOS transistor Q3 is connected to the single-chip microcomputer and one end of resistor R4. The other end of resistor R4 is connected to the source of MOS transistor Q3 and the drain of MOS transistor Q4. The gate of MOS transistor Q4 is connected to the single-chip microcomputer and the other end of resistor R5. The gate of MOS transistor Q5 is connected to the single-chip microcomputer and one end of resistor R6. The other end of resistor R6 is connected to the source of MOS transistor Q5 and the drain of MOS transistor Q6. The gate of MOS transistor Q6 is connected to the single-chip microcomputer and the other end of resistor R7. The gate of MOS transistor Q7 is connected to the other end of resistor R14 and one end of resistor R13. The other end of resistor R13 is connected to the voltage test circuit. The other end of capacitor C2 is connected to the other end of resistor R8 and the 3rd pin of relay K2. Resistor R33 is connected to the 5th pin of relay K1. The 7th pin of relay K1 is grounded. The other end of resistor R31 is connected to one end of resistor R32. The other end of resistor R32 is connected to the 2nd pin of relay K1. The other end of resistor R1 is connected to one end of resistor R26. The other end of resistor R26 is connected to the 4th pin of relay K1.

[0071] As Figure 7As shown, when the system is powered on, relay K2 does not work, relay K1 is energized, the control board under test drives the MOSFET, and EA, EB, and EC are connected to resistive loads. After the test passes, relay K1 is released, and relay K2 does not work. The contacts of pins 2-3 are connected to simulate 12.5A operation. After the microcontroller detects the voltage, relay K2 works. The contacts of pins 3-4 are connected to simulate 50A overcurrent. After the microcontroller detects the overcurrent signal, it indicates passing. The Current terminal is the current terminal, which is used to collect the current of the control board under test and feedback it to the microcontroller, and the microcontroller judges whether there is overcurrent or insufficiency.

[0072] As an optional embodiment of the present invention, optionally, the current acquisition circuit includes resistor R72, resistor R63, resistor R56, resistor R61, resistor R79, resistor R82, resistor R78, resistor R87, resistor R88, resistor R86, resistor R81, capacitor C10, capacitor C34, capacitor C8, capacitor C27, capacitor C36, capacitor C37, diode D17, amplifier U3B, and amplifier U4B;

[0073] Among them, one end of resistor R72 is connected to the power supply, the other end of resistor R72 is connected to the microcontroller, one end of capacitor C10, and pin 2 of amplifier U3B. The other end of capacitor C10 is grounded. Pin 5 of U3B is connected to one end of capacitor C27, the input end of diode D17, one end of resistor R79, one end of capacitor C8, one end of resistor R63, one end of resistor R56, and one end of resistor R61. The other ends of capacitor C27, capacitor C8, and resistor R61 are grounded. The output end of diode D17 is connected to the power supply. The other end of resistor R63 is connected to one end of capacitor C34 and pin 4 of amplifier U3B. The other end of capacitor C34 is grounded. The other end of resistor R79 is connected to one end of resistor R82. The other end of resistor R82 is connected to one end of resistor R78, one end of capacitor C36, and pin 5 of amplifier U4B. The other end of resistor R78 is connected to the positive power supply. The other end of capacitor C36 is grounded. Pin 6 of amplifier U4B is connected to one end of resistor R87 and one end of resistor R88. The other end of resistor R87 is grounded. The other end of resistor R88 is connected to one end of resistor R86. The other end of resistor R86 is connected to pin 7 of amplifier U4B and one end of resistor R81. The other end of resistor R81 is connected to one end of capacitor C37 and the microcontroller. The other end of capacitor C37 is grounded.

[0074] As Figure 7As shown, in the single-board test, the control board under test drives six MOS transistors through 6 PWM signals, and the output voltage drives the output voltages of the 6 MOS transistors of the control board under test to drive the motor and enter the test operation. Since the power output current capacity of the control board under test is limited, it cannot operate under high-power and high-current conditions. In addition, in order to simplify the test process and improve the test efficiency, the current simulation function is used to simulate the controller operating under high-power and high-current conditions, which can be achieved by simply switching the resistor and the starter. The working current point of the single-chip microcomputer: the working current is 12.5 A, and the protection point is 50 A current. The current acquisition circuit for simulating current testing of the control board under test includes 2 amplification circuits: one 25-fold current amplification circuit and one 50 A over-current detection circuit. The voltage across the two ends of the 2.5 mΩ resistor on another power board is detected. According to the resistor equivalent principle, when the detection circuit is connected to a 634 Ω resistor, the output of the operational amplifier is equivalent to the 12.5 A working state. When a 2.58 KΩ resistor is connected, the voltage at the input end of the comparator is equivalent to 50 A over-current. It is simulated by connecting 2 resistors in series, 180 Ω + 470 Ω (650 Ω), 1.2 KΩ + 1.5 KΩ (2.7 KΩ), and taking the larger value upwards.

[0075] Figure 9 It is the single-chip microcomputer STMS5903K3T6 adopted by this application.

[0076] For the connection of each circuit to the corresponding pins of the single-chip microcomputer, refer to each drawing of this application and the above embodiments for description.

[0077] The above are only the preferred embodiments of this application and are not used to limit this application. For those skilled in the art, various changes and modifications can be made to this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

1. A control board test tooling, characterized in that, The tooling includes a power supply, a single-chip microcomputer, a key circuit, a voltage test circuit, an indicator light circuit, an alarm circuit, a drive circuit, and a current acquisition circuit; The power supply is connected to the single-chip microcomputer circuit for supplying power to the single-chip microcomputer; the key circuit is connected to the single-chip microcomputer circuit for controlling the on / off of the voltage test circuit; the voltage test circuit is connected to the single-chip microcomputer circuit for testing whether the voltage of the control board to be tested is within the allowable deviation range; the indicator light circuit is connected to the single-chip microcomputer circuit for indicating whether the voltage of the control board to be tested is within the allowable deviation range; the alarm circuit is connected to the single-chip microcomputer circuit for indicating whether the voltage of the control board to be tested is within the allowable deviation range; the drive circuit is connected to the single-chip microcomputer circuit for driving the output voltage of the 6 MOS transistors of the control board to be tested, driving the motor, and entering the test; The current acquisition circuit is connected to the single-chip microcomputer circuit for simulating the operation of the control board to be tested under high power and large current.

2. The control board testing tooling according to claim 1, wherein, The power supply includes diode D1, diode D2, diode D3, diode D16, voltage regulator diode D10, voltage regulator diode D4, resistor R9, resistor R10, resistor R11, resistor R12, resistor R15, resistor R28, capacitor C9, capacitor C10, capacitor C11, capacitor C17, capacitor C20, capacitor C12, capacitor C13, capacitor C26, capacitor C22, capacitor C23, capacitor C24, capacitor C25, capacitor C19, transformer U1, voltage regulator U2, and inductor L1; Among them, the input end of the diode D1 is connected to the positive pole of the power supply. The output end of the diode D1 is connected to one end of the resistor R9 and one end of the resistor R10. The other end of the resistor R9 and the other end of the resistor R10 are both connected to the input end of the capacitor C20, one end of the capacitor C17, and the 5th pin of the transformer U1. The output end of the capacitor C20 and the other end of the capacitor C17 are both grounded. The 4th pin of the transformer U1 is connected to one end of the resistor R12, one end of the resistor R11, and one end of the capacitor C12. The 3rd pin of the transformer U1 is connected to one end of the capacitor C11. The other end of the capacitor C11 is connected to the 1st pin, 2nd pin, 6th pin, 7th pin of the transformer U1, the other end of the resistor R12, one end of the capacitor C10, one end of the inductor L1, and the output end of the diode D2. The input end of the diode D2 is grounded. The other end of the resistor R11 and the other end of the capacitor C12 are both connected to the other end of the capacitor C10 and the output end of the diode D3. The input end of the diode D3 is connected to one end of the resistor R15, the output end of the voltage regulator diode D10, one end of the capacitor C13, one end of the capacitor C26, the input end of the capacitor C9, and the other end of the inductor L1. The other end of the capacitor C13, the other end of the capacitor C26, and the output end of the capacitor C9 are all grounded. The other end of the resistor R15 is connected to one end of the capacitor C24, one end of the capacitor C22, the input end of the capacitor C23, and the 1st pin of the voltage regulator U2. The input end of the voltage regulator diode D10 is connected to the other end of the capacitor C24, the other end of the capacitor C22, the output end of the capacitor C23, the 2nd pin of the voltage regulator U2, the input end of the voltage regulator diode D4, the output end of the capacitor C19, one end of the capacitor C25, and one end of the resistor R28. The 3rd pin of the voltage regulator U2 is connected to the output end of the voltage regulator diode D4, the input end of the capacitor C19, the other end of the capacitor C25, the other end of the resistor R28, and the input end of the diode D16. The output end of the diode D16 is connected to the single-chip microcomputer.

3. The control board test tooling according to claim 2, wherein, The key circuit includes a resistor R59, a resistor R60, a resistor R61, a capacitor C31, a capacitor C32, a capacitor C33, an interface J6, an interface J7, a switch KEY1, a switch KEY2, and a switch KEY3. Among them, one end of the resistor R59, one end of the resistor R60, and one end of the resistor R61 are connected to the power supply. The other end of the resistor R59 is connected to one end of the capacitor C31 and the 1st pin of the interface J6. The other end of the resistor R60 is connected to one end of the capacitor C32 and the 2nd pin of the interface J6. The other end of the resistor R61 is connected to one end of the capacitor C33 and the 3rd pin of the interface J6. The other end of the capacitor C31, the other end of the capacitor C32, and the other end of the capacitor C33 are connected to the 4th pin of the interface J6 and are grounded. The 5th pin of the interface J6 is connected to the power supply; the 5th pin of the interface J7 is connected to the power supply. The switch KEY3 is connected to the 3rd pin and the 4th pin of the interface J7. The switch KEY2 is connected to the 3rd pin and the 2nd pin of the interface J7. The switch KEY1 is connected to the 2nd pin and the 1st pin of the interface J7.

4. The control board test tooling according to claim 1, wherein, The voltage test circuit includes a first voltage test circuit, a second voltage test circuit, and a third voltage test circuit; The first voltage test circuit includes a resistor R24, a resistor R25, and a capacitor C8; one end of the resistor R24 is connected to the first test point of the control board to be tested, the other end of the resistor R24 is connected to one end of the resistor R25, one end of the capacitor C8, and the single-chip microcomputer, and the other ends of the resistor R25 and the capacitor C8 are grounded; The second voltage test circuit includes a resistor R29, a resistor R30, and a capacitor C29; one end of the resistor R29 is connected to the second test point of the control board to be tested, the other end of the resistor R29 is connected to one end of the resistor R30, one end of the capacitor C29, and the single-chip microcomputer, and the other ends of the resistor R30 and the capacitor C29 are grounded; The third voltage test circuit includes a resistor R22, a resistor R23, and a capacitor C6; one end of the resistor R22 is connected to the third test point of the control board to be tested, the other end of the resistor R22 is connected to one end of the resistor R23, one end of the capacitor C6, and the single-chip microcomputer, and the other ends of the resistor R23 and the capacitor C6 are grounded.

5. The control board test tooling according to claim 1, characterized in that The indicator light circuit includes a first normal indicator circuit, a normal operation indicator circuit, a second normal indicator circuit, and a fault indicator circuit; The first normal indicator circuit includes a resistor R17 and a light-emitting diode D6; one end of the resistor R17 is connected to the single-chip microcomputer, the other end of the resistor R17 is connected to the input end of the light-emitting diode D6, and the output end of the light-emitting diode D6 is grounded; The normal operation indicator circuit includes a resistor R18 and a light-emitting diode D7; one end of the resistor R18 is connected to the single-chip microcomputer, the other end of the resistor R18 is connected to the input end of the light-emitting diode D7, and the output end of the light-emitting diode D7 is grounded; The normal indicator circuit includes a resistor R19 and a light-emitting diode D8; one end of the resistor R19 is connected to the single-chip microcomputer, the other end of the resistor R19 is connected to the input end of the light-emitting diode D8, and the output end of the light-emitting diode D8 is grounded; The fault indicator circuit includes a resistor R20 and a light-emitting diode D9; one end of the resistor R20 is connected to the single-chip microcomputer, the other end of the resistor R20 is connected to the input end of the light-emitting diode D9, and the output end of the light-emitting diode D9 is grounded.

6. The control board testing tooling according to claim 1, wherein, The alarm circuit includes a resistor R41, a resistor R42, a resistor R43, a capacitor C28, a triode Q10, and a buzzer LS1; One end of the resistor R43 is connected to the power supply, the other end of the resistor R43 is connected to the 1st pin of the buzzer LS1 and the input end of the capacitor C28, the output end of the capacitor C28 is grounded, the 2nd pin of the buzzer LS1 is connected to the collector of the triode Q10, the base of the triode Q10 is connected to one end of the resistor R41 and one end of the resistor R42, the other end of the resistor R41 is connected to the single-chip microcomputer, and the other ends of the resistor R42 and the emitter of the triode Q10 are both grounded.

7. The control board test tooling according to claim 1, characterized in that, The driving circuit includes MOS transistor Q1, MOS transistor Q2, MOS transistor Q3, MOS transistor Q4, MOS transistor Q5, MOS transistor Q6, MOS transistor Q7, resistor R4, resistor R2, resistor R27, resistor R6, resistor R3, resistor R5, resistor R7, resistor R13, resistor R14, resistor R8, resistor R33, resistor R1, resistor R26, resistor R31, resistor R32, capacitor C2, capacitor C21, capacitor C18, relay K1 and relay K2; Among them, the drain of MOS transistor Q1 is connected to the positive power supply, one end of resistor R27, the drain of MOS transistor Q3, one end of capacitor C21 and the drain of MOS transistor Q5. The gate of MOS transistor Q1 is connected to the single-chip microcomputer and one end of resistor R2. The other end of resistor R2 is connected to the source of MOS transistor Q1 and the drain of MOS transistor Q2. The gate of MOS transistor Q2 is connected to the single-chip microcomputer and one end of resistor R3. The other end of resistor R3 is connected to the source of MOS transistor Q2, the other end of resistor R27, one end of resistor R5, one end of resistor R7, the source of MOS transistor Q4, the source of MOS transistor Q6, the output end of capacitor C18, one end of resistor R14, the source of MOS transistor Q7, one end of capacitor C2, one end of resistor R8, one end of resistor R31 and one end of resistor R1. The gate of MOS transistor Q3 is connected to the single-chip microcomputer and one end of resistor R4. The other end of resistor R4 is connected to the source of MOS transistor Q3 and the drain of MOS transistor Q4. The gate of MOS transistor Q4 is connected to the single-chip microcomputer and the other end of resistor R5. The gate of MOS transistor Q5 is connected to the single-chip microcomputer and one end of resistor R6. The other end of resistor R6 is connected to the source of MOS transistor Q5 and the drain of MOS transistor Q6. The gate of MOS transistor Q6 is connected to the single-chip microcomputer and the other end of resistor R7. The gate of MOS transistor Q7 is connected to the other end of resistor R14 and one end of resistor R13. The other end of resistor R13 is connected to the voltage test circuit. The other end of capacitor C2 is connected to the other end of resistor R8 and the 3rd pin of relay K2. Resistor R33 is connected to the 5th pin of relay K1. The 7th pin of relay K1 is grounded. The other end of resistor R31 is connected to one end of resistor R32. The other end of resistor R32 is connected to the 2nd pin of relay K1. The other end of resistor R1 is connected to one end of resistor R26. The other end of resistor R26 is connected to the 4th pin of relay K1.

8. The control board testing tooling according to claim 1, characterized in that, The current acquisition circuit includes resistor R72, resistor R63, resistor R56, resistor R61, resistor R79, resistor R82, resistor R78, resistor R87, resistor R88, resistor R86, resistor R81, capacitor C10, capacitor C34, capacitor C8, capacitor C27, capacitor C36, capacitor C37, diode D17, amplifier U3B and amplifier U4B; Among them, one end of resistor R72 is connected to the power supply, and the other end of resistor R72 is connected to the microcontroller, one end of capacitor C10, and pin 2 of amplifier U3B. The other end of capacitor C10 is grounded. Pin 5 of U3B is connected to one end of capacitor C27, the input end of diode D17, one end of resistor R79, one end of capacitor C8, one end of resistor R63, one end of resistor R56, and one end of resistor R61. The other ends of capacitor C27, capacitor C8, and resistor R61 are grounded. The output end of diode D17 is connected to the power supply. The other end of resistor R63 is connected to one end of capacitor C34 and pin 4 of amplifier U3B. The other end of capacitor C34 is grounded. The other end of resistor R79 is connected to one end of resistor R82. The other end of resistor R82 is connected to one end of resistor R78, one end of capacitor C36, and pin 5 of amplifier U4B. The other end of resistor R78 is connected to the positive pole of the power supply. The other end of capacitor C36 is grounded. Pin 6 of amplifier U4B is connected to one end of resistor R87 and one end of resistor R88. The other end of resistor R87 is grounded. The other end of resistor R88 is connected to one end of resistor R86. The other end of resistor R86 is connected to pin 7 of amplifier U4B and one end of resistor R81. The other end of resistor R81 is connected to one end of capacitor C37 and the microcontroller. The other end of capacitor C37 is grounded.

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