Driving board detection device

Abstract

The utility model discloses a driver board detection device which converts 220V alternating current input by a power input port into direct current through a power conversion module and supplies the direct current to a driving signal generation module, an oscilloscope, a control power output port and a test power output port. A control power supply output port and a driving signal output port are respectively connected with a control power supply interface and a driving signal interface of a to-be-tested driving board, during testing, a testing power supply output port is connected with a P terminal and an N terminal of the driving board, and a driving signal generation module generates a trigger signal to drive the driving board to work. And the oscilloscope is connected with the driving board to display the actual working state of the driving circuit on the driving board, so as to determine whether the driving circuit fails or not and realize the off-line detection of the driving board.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage frequency conversion technology, and in particular to a driver board detection device. Background Technology

[0002] Low-voltage frequency converters are widely used in industrial production activities. Their general structure consists of a control unit, an interface module, a power supply board, and a drive board.

[0003] In a conventional inverter structure, the drive board is typically an integrated circuit board installed inside the inverter and controlled by the control unit within the complete inverter system. The drive board cannot function independently of the inverter system. Therefore, this dependence on the inverter system significantly hinders offline inspection, troubleshooting, and repair of the drive board, greatly reducing work efficiency. Utility Model Content

[0004] In view of the above problems, this application is made in order to provide a driver board detection device that overcomes or at least partially solves the above problems.

[0005] A driver board detection device is provided, comprising:

[0006] Power input port;

[0007] The power conversion module has its input terminal electrically connected to the power input port;

[0008] The control power output port is electrically connected to the output terminal of the power conversion module;

[0009] The input terminal of the drive signal generation module is electrically connected to the output terminal of the power conversion module.

[0010] N drive signal output ports are electrically connected to the output terminal of the drive signal generation module, where N is a positive integer greater than or equal to 1;

[0011] M test power output ports are electrically connected to the output of the power conversion module, where M is a positive integer greater than or equal to 1;

[0012] The oscilloscope's power interface is connected to the output of the power conversion module.

[0013] Optionally, the power conversion module includes:

[0014] The first AC-to-DC module has its input terminal electrically connected to the power input port and its output terminal electrically connected to the first DC power supply circuit.

[0015] The first DC-to-DC module has its input terminal connected in parallel with the control power output port in the first DC power supply circuit, and its output terminal electrically connected to the first DC power supply sub-circuit. The M test power output ports are located in the first DC power supply sub-circuit.

[0016] Optional, also includes:

[0017] The second DC-to-DC module has its input terminal connected in parallel with the control power output port of the first DC power supply circuit, and its output terminal connected to the second DC power supply sub-circuit.

[0018] The drive signal generation module includes:

[0019] A pulse signal generator is provided in parallel with the control power output port in the first DC power supply circuit;

[0020] A pulse signal amplifier is disposed in the second DC power supply sub-circuit, with its input terminal electrically connected to the output terminal of the pulse signal generator and its output terminal electrically connected to the N drive signal output ports.

[0021] Optional, also includes:

[0022] N electro-optical modules are provided, each of which is correspondingly located at one of the drive signal output ports and electrically connected to the output of the pulse signal amplifier.

[0023] Optional, also includes:

[0024] N optical-to-electric modules, each of which is configured in a corresponding manner at one of the drive signal output ports;

[0025] The third DC-to-DC module has its input terminal connected in parallel with the control power output port in the first DC power circuit, and its output terminal electrically connected to the third DC power sub-circuit.

[0026] N indicator light modules are connected in parallel in the third DC power supply sub-circuit, and each indicator light module is electrically connected to one of the photoelectric conversion modules.

[0027] Optionally, each of the N indicator light modules specifically includes a first indicator light and a relay; the coil of the relay is connected in series with the corresponding photoelectric conversion module in the same power supply circuit, and the contacts of the relay are connected in series with the first indicator light.

[0028] Optionally, it also includes a changeover switch, the stationary contact of which is electrically connected to the negative terminal of the output of the pulse signal amplifier; each of the N electro-optical modules specifically includes a first light-emitting diode and a second light-emitting diode, the positive terminals of the first light-emitting diode and the second light-emitting diode being electrically connected to the positive terminal of the output of the pulse signal amplifier; the negative terminal of the first light-emitting diode is electrically connected to the first moving contact of the changeover switch, and the negative terminal of the second light-emitting diode is electrically connected to the second moving contact of the changeover switch.

[0029] Optional, also includes:

[0030] The fourth DC-to-DC module has its input terminal connected in parallel with the control power output port in the first DC power circuit, and its output terminal connected to the fourth DC power sub-circuit.

[0031] The second indicator light is located in the fourth DC power supply sub-circuit.

[0032] Optional, also includes:

[0033] The second AC-to-DC module has its input terminal electrically connected to the power input port and its output terminal electrically connected to the second DC power supply circuit. The power interface of the oscilloscope is electrically connected to the second DC power supply circuit.

[0034] Optionally, N is 3 and M is 3.

[0035] The technical solution provided in this application has at least the following technical effects or advantages:

[0036] This application discloses a driver board testing device. The device converts 220V AC power input from the power input port into DC power via a power conversion module and supplies it to a drive signal generation module, an oscilloscope, a control power output port, and a test power output port. In use, the control power output port and drive signal output port are connected to the control power interface and drive signal interface of the driver board under test, respectively. During testing, the test power output port is connected to the P and N terminals of the driver board. The drive signal generation module generates a trigger signal to drive the driver board. The oscilloscope is then connected to the driver board to display the actual operating status of the drive circuit on the board, thereby determining whether it is faulty and achieving offline testing of the driver board.

[0037] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0038] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0039] Figure 1 This is a wireframe diagram of the driver board detection device in an embodiment of this application;

[0040] Figure 2 This is a structural diagram of the driver board detection device in an embodiment of this application;

[0041] Figure 3 This is a diagram showing the internal structure of the driver board testing device in an embodiment of this application;

[0042] Figure 4 This is a schematic diagram illustrating the application of the driver board testing device in the embodiments of this application. Detailed Implementation

[0043] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings.

[0044] The accompanying drawings illustrate various structural schematics according to embodiments of this application. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0045] To better understand the above technical solutions, the following will describe the above technical solutions in detail with reference to specific implementation methods. It should be understood that the embodiments of this disclosure and the specific features in the embodiments are detailed descriptions of the technical solutions of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0046] Low-voltage frequency converters are widely used in industrial production activities. Their general structure consists of a control unit, an interface module, a power supply board, and a driver board. The driver board is mainly responsible for supplying power to the drive circuit, receiving trigger pulses to drive the IGBTs, and providing feedback on the operating status of the drive circuit.

[0047] In a conventional inverter structure, the drive board is typically an integrated circuit board installed inside the inverter. It is controlled and started by the control unit within the complete inverter system; a standalone drive board cannot function independently of the inverter system. This dependence of the drive board on the inverter system significantly hinders offline equipment inspection, fault handling, and drive board repair, greatly reducing work efficiency.

[0048] In view of this, this application provides a driver board detection device, please refer to... Figure 1 , Figure 1 This is a wireframe diagram of a driver board detection device in an embodiment of this application. The driver board detection device 100 includes:

[0049] Power input port 101 is used to connect to a 220V AC power supply. Power input port 101 can be a triangular connector.

[0050] The power conversion module 102 has its input terminal electrically connected to the power input port 101;

[0051] The control power output port 103 is electrically connected to the output terminal of the power conversion module 102;

[0052] The input terminal of the drive signal generation module 104 is electrically connected to the output terminal of the power conversion module 102.

[0053] N drive signal output ports 105 are electrically connected to the output terminal of the drive signal generation module 104, where N is a positive integer greater than or equal to 1;

[0054] M test power output ports 106 are electrically connected to the output terminal of the power conversion module 102, where M is a positive integer greater than or equal to 1;

[0055] Oscilloscope 107, the power interface of oscilloscope 107 is connected to the output terminal of power conversion module 102.

[0056] When testing the inverter driver board, connect the power input port 101 to a 220V AC current source, connect the control power output port 103 to the control circuit interface of the inverter driver board, and connect the test power output port 106 to the P terminal, N terminal, or U-phase terminal, V-phase terminal, and W-phase terminal of the inverter driver board. The trigger signal generated by the drive signal generation module 104 drives the inverter driver board to operate. Connecting the oscilloscope 107 to the inverter driver board via signal lines displays the actual operating status of the drive circuit on the inverter driver board, thereby determining whether it is faulty and realizing offline testing of the inverter driver board.

[0057] For example, for testing using an IGBT three-phase drive circuit and a frequency converter drive board, the oscilloscope 107 is applied to the collector / emitter of the IGBT on the frequency converter drive board via test leads. After a trigger signal and control power are given, the oscilloscope screen will display the trigger waveform corresponding to the trigger signal. For a three-phase drive circuit, three-phase trigger pulses can be output simultaneously. The oscilloscope 107 can perform multi-channel multi-phase simultaneous display for status comparison.

[0058] In some alternative implementations, such as Figure 2 As shown, the power conversion module 102 includes:

[0059] The first AC-to-DC module 201 has its input terminal electrically connected to the power input port 101 and its output terminal electrically connected to the first DC power supply circuit. The control power output port 103 is electrically connected to the first DC power supply circuit.

[0060] The first AC-to-DC module 201 can be an AC 220V to DC 24V module, which is used to convert the 220V AC power input from the power input port 101 into 24V DC power to form the power supply of the first DC power supply circuit, so as to control the power output port 103 to output 24V drive current to the driver board under test.

[0061] The first DC-to-DC module 202 has its input terminal connected in parallel with the control power output port 103 in the first DC power supply circuit, and its output terminal electrically connected to the first DC power supply sub-circuit. The M test power output ports 106 are located in the first DC power supply sub-circuit.

[0062] The first DC-to-DC module 202 can be a DC 24V to DC 12V module, used to convert 24V DC power to 12V DC power to form the power supply of the first DC power supply sub-circuit.

[0063] In some alternative implementations, it remains as follows Figure 2 As shown, the power conversion module 102 also includes:

[0064] The second DC-to-DC module 203 has its input terminal connected in parallel with the control power output port 103 to the first DC power supply circuit, and its output terminal connected to the second DC power supply sub-circuit.

[0065] The second DC-to-DC module 203 can be a DC 24V to DC 5V module, used to convert 24V DC power to 5V DC power to form the power supply of the second DC power supply sub-circuit.

[0066] The drive signal generation module 104 includes:

[0067] A pulse signal generator 204 is connected in parallel with the control power output port 103 in the first DC power supply circuit. The pulse signal generator 204 is used to convert 24V DC power into a pulse signal with a set duty cycle.

[0068] A pulse signal amplifier 205 is disposed in the second DC power supply sub-circuit. Its input terminal is electrically connected to the output terminal of the pulse signal generator 204, and its output terminal is electrically connected to the N drive signal output ports 105. The pulse signal amplifier 205 is used to amplify the pulse signal output by the pulse signal generator 204, and the drive signal output ports 105 are used to output the amplified pulse signal to the drive board under test to drive the drive circuit on the drive board.

[0069] The drive signal generation module 104 generates a PWM signal with adjustable frequency and duty cycle through the pulse signal generator 204. The signal is then amplified by the pulse amplifier circuit in the pulse signal amplifier 205 and the drive signal output port 105 to generate a trigger signal that can be recognized by the inverter drive circuit, thereby driving the inverter drive board to work.

[0070] The drive signal output port 105 can adopt an optoelectronic interface; however, in some optional implementations, it remains as follows: Figure 2 As shown, the drive board detection device 100 further includes:

[0071] N electro-optical conversion modules 206 are provided one-to-one with a drive signal output port 105 and electrically connected to the output terminal of the pulse signal amplifier 205.

[0072] The pulse signal is amplified and sent to the electro-optical module 206 to form a drive signal source for the driver board. Some driver boards have a photoelectric interface for their drive signal. The electro-optical module 206 converts the pulse electrical signal into an optical signal and outputs it to the photoelectric interface of the driver board through the drive signal output port 105, thereby driving the drive circuit on the driver board. The electro-optical module 206 can be a light-emitting diode or other components that can convert electrical signals into optical signals, which will not be elaborated here.

[0073] In some optional implementations, N is 3 and M is 3. This corresponds to the triggering and detection of the three-phase drive circuit of the drive circuit on the corresponding drive board.

[0074] In some alternative implementations, it remains as follows Figure 2 As shown, the power conversion module 102 further includes a third DC-to-DC module 207, whose input terminal is connected in parallel with the control power output port 103 in the first DC power circuit, and whose output terminal is electrically connected to the third DC power sub-circuit.

[0075] The third DC-to-DC module 207 can be a DC 24V to DC 2.2V module, used to convert 24V DC power to 2.2V direct power as the power source for the third DC power supply sub-circuit.

[0076] The drive board detection device 100 also includes:

[0077] N photoelectric conversion modules 208 are provided one-to-one with one of the drive signal output ports 105.

[0078] When the drive circuit on the driver board is operating normally, it will send a status signal back to the photoelectric interface. This status signal is output in the form of an optical signal. The optical-to-electric module 208 is used to receive the status optical signal output by the photoelectric interface of the driver board and convert it into an electrical signal in order to determine whether the driver board is working properly.

[0079] N indicator light modules 209 are connected in parallel in the third DC power supply subcircuit, and each indicator light module 209 is electrically connected to one of the photoelectric conversion modules 208. When an indicator light module 209 receives a signal from the photoelectric conversion module 208, it lights up to indicate whether the driver board's drive circuit is working properly.

[0080] In some alternative implementations, such as Figure 3 As shown, each of the N indicator light modules 209 specifically includes a first indicator light 2091 and a relay 2092; the coil of the relay 2092 is connected in series with the corresponding photoelectric conversion module 208 in the same power circuit, and the contacts of the relay 2092 are connected in series with the first indicator light 2091.

[0081] When the photoelectric module 208 generates an electrical signal based on the status light signal output from the photoelectric interface of the driver board, the power supply circuit of the coil of the corresponding relay 2092 is turned on, the contact corresponding to the coil of the relay 2092 is closed, the third DC power supply sub-circuit is turned on, so that the corresponding first indicator light 2091 is energized and lit. The operator judges whether the driving circuit of the driver board is working properly based on the lighting status of the first indicator light 2091.

[0082] The indicator lights change color according to the operating status of the drive circuit. Based on the waveform and indicator light information, the performance of the drive board can be quickly determined, facilitating equipment maintenance and circuit repair, resulting in high work efficiency. For example, the indicator light shows green for normal drive circuit status, and red for abnormal drive circuit status. Other blue indicator lights indicate the output status of the test power supply, control power supply, and upper / lower bridge test pulse signals, respectively.

[0083] In some alternative implementations, it remains as follows Figure 2 As shown, the driver board detection device 100 also includes a changeover switch 210, the stationary contact of which is electrically connected to the negative terminal of the output of the pulse signal amplifier 205; each of the N electro-optical modules 206 specifically includes a first light-emitting diode and a second light-emitting diode, the positive terminals of the first light-emitting diode and the second light-emitting diode are respectively electrically connected to the positive terminal of the output of the pulse signal amplifier 205; the negative terminal of the first light-emitting diode is electrically connected to the first moving contact of the changeover switch 210, and the negative terminal of the second light-emitting diode is electrically connected to the second moving contact of the changeover switch 210.

[0084] The driver board's driving circuit is divided into an upper bridge and a lower bridge. The photoelectric interface of the driver board simultaneously houses a photodiode corresponding to the upper bridge circuit and a first photodiode corresponding to the lower bridge circuit. The photodiode corresponding to the upper bridge circuit senses the light emitted by the first LED, generating an electrical signal that is applied to the upper bridge circuit. If the upper bridge circuit is working normally, it feeds back a status signal, and the corresponding first indicator light 2091 illuminates. The photodiode corresponding to the lower bridge circuit senses the light emitted by the second LED, generating an electrical signal that is applied to the lower bridge circuit. If the lower bridge circuit is working normally, it feeds back a status signal, and the corresponding first indicator light 2091 illuminates.

[0085] For example, the IGBT drive circuit of the inverter drive board includes upper and lower bridge circuits and a lower bridge circuit, with corresponding upper bridge interface and lower bridge interface. The drive signal output port 105 includes an output interface corresponding to the upper bridge interface and an output interface corresponding to the lower bridge interface. The upper and lower bridge trigger pulses of the drive circuit are switched by the changeover switch 210, and the upper and lower bridge trigger status of the drive circuit is displayed by the indicator light to detect the upper bridge interface and the lower bridge interface of the inverter drive board respectively.

[0086] Understandably, when the moving contact of the changeover switch 210 is connected to the negative terminal of the first LED, the circuit containing the first LED is turned on. At this time, the illumination status of the corresponding first indicator light 2091 indicates whether the upper bridge circuit is functioning correctly. Similarly, when the moving contact of the changeover switch 210 is connected to the negative terminal of the second LED, the circuit containing the second LED is turned on. At this time, the illumination status of the corresponding first indicator light 2091 indicates whether the lower bridge circuit is functioning correctly.

[0087] In some alternative implementations, it remains as follows Figure 2 As shown, the power conversion module 102 also includes:

[0088] The fourth DC-to-DC module 211 has its input terminal connected in parallel with the control power output port 103 in the first DC power circuit, and its output terminal connected to the fourth DC power sub-circuit.

[0089] The fourth DC-to-DC module 211 is a 24V DC to 3.3V DC module, which is used to convert 24V DC power to 3.3V DC power as the power source for the fourth DC power supply sub-circuit.

[0090] The drive board detection device 100 also includes:

[0091] The second indicator light 212 is located in the fourth DC power supply sub-circuit. The second indicator light 212 is used to indicate whether the driver board detection device 100 is working properly.

[0092] In some alternative implementations, it remains as follows Figure 2 As shown, the power conversion module 102 also includes:

[0093] The second AC-to-DC module 213 has its input terminal electrically connected to the power input port 101 and its output terminal electrically connected to the second DC power supply circuit. The power interface of the oscilloscope 107 is electrically connected to the second DC power supply circuit.

[0094] The second AC-to-DC module 213 can be a DC 220V to DC 5V module, used to convert 220V AC power into 5V DC power to form the power supply of the second DC power supply circuit to power the oscilloscope 107.

[0095] The driver board testing device 100 provided in this embodiment of the application further includes a housing, a power input port 101, a control power output port 103, a drive signal output port 105, a test power output port 106, an oscilloscope 107 signal interface, an oscilloscope screen, an indicator light module 209, and a selector switch 210, all disposed within the housing. Figure 3 As shown. The casing is made entirely of plastic. The required safety grounding wire is connected to the equipment's grounding busbar via quick connectors and alligator clips to prevent electric shock and improve operational safety.

[0096] Connect the device to an AC 220V power supply via quick connector 1 (pin-shaped) to turn the power supply on or off. Figure 3 As shown, the 1A fuse protection device circuit is connected to the AC220 / DC24 power conversion module to output DC2.2V, DC3.3V, DC5V, and DC24V power to drive the indicator light module 209, the second indicator light 212, the pulse signal amplifier 205, the electro-optical module 206, and the pulse signal generator 204, respectively.

[0097] like Figure 4As shown, a PWM signal with adjustable frequency and duty cycle is generated by a pulse signal generator 204. The pulse signal is then fed to the electro-optical conversion module 206 in the U-phase drive circuit photoelectric interface 7, V-phase drive circuit photoelectric interface 8, and W-phase drive circuit photoelectric interface 9 via a pulse signal amplifier 205, forming the drive board control signal source. Figure 3 The switch 23 shown in the figure switches the upper and lower bridge trigger pulses of the drive circuit, and the upper and lower bridge trigger status of the drive circuit is displayed by the upper bridge trigger status indicator 22 and the lower bridge trigger status indicator 24.

[0098] The oscilloscope screen 3 and the U-phase drive circuit indicator 4, V-phase drive circuit indicator 5, and W-phase drive circuit indicator 6 (i.e., ...) are used to measure the oscilloscope screen. Figure 2 The first indicator light (2091) reads and displays the actual working status of the drive circuit of the inverter drive board, and can simultaneously observe and compare the trigger status of the three-phase drive circuit.

[0099] The oscilloscope 107 can be configured with one to three detection channels, and the three detection channels correspond to... Figure 3 The three detection channel interfaces 11, 12, and 13 on the middle housing are used for, for example Figure 4 As shown, the oscilloscope 107 is connected to the inverter driver board via signal lines to display the operating status of the drive circuit. The oscilloscope 107 can also be set... Figure 3 The USB interface 2 shown is used to read waveform screenshots from the oscilloscope module and to charge it.

[0100] pass Figure 3 The test power supply positive interface 16, test power supply negative interface 17, and test power supply ground interface 18 shown output test power positive, test power supply negative, and system ground, respectively. The on / off status of the test power supply is displayed and controlled by the on / off indicator light 14 and the test power switch 15. The control power supply of the drive board is output through the control power interface 21, and the on / off status of the inverter drive board control power supply is displayed and controlled by the control power indicator light 19 and the control power switch 20.

[0101] The drive board testing device provided in this application embodiment is used to perform offline testing on inverter drive boards, and has the following beneficial effects:

[0102] 1. It can independently provide the drive power and test power for the frequency converter drive board, avoiding signal interference from other auxiliary devices.

[0103] 2. The device allows for free switching of the upper and lower bridge circuit triggering functions of the three-phase drive, offering simple, flexible, and convenient operation. The three-phase drive circuit simultaneously triggers multiple channels for waveform comparison, and the indicator lights change color according to the drive circuit's operating status. Based on the waveform and indicator light information, the drive board performance can be quickly determined, facilitating equipment maintenance and circuit repair, resulting in high work efficiency.

[0104] 3. The device uses AC220V power and a three-pin quick connector for the incoming line, and banana plug quick connector with alligator clips for the outgoing line. The quick connector is plug-and-play, making it easy to install, remove and fix.

[0105] 4. The device casing is made entirely of plastic, and the device's protective grounding uses a banana-head quick-connect interface with alligator clips to connect to the target equipment's protective grounding electrode, thus providing a safety function against electric shock.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0107] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of this application may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

Claims

1. A driver board detection device, characterized in that, include: Power input port; The power conversion module has its input terminal electrically connected to the power input port; The control power output port is electrically connected to the output terminal of the power conversion module; The input terminal of the drive signal generation module is electrically connected to the output terminal of the power conversion module. N drive signal output ports are electrically connected to the output terminal of the drive signal generation module, where N is a positive integer greater than or equal to 1; M test power output ports are electrically connected to the output of the power conversion module, where M is a positive integer greater than or equal to 1; The oscilloscope's power interface is connected to the output of the power conversion module.

2. The driver board detection device as described in claim 1, characterized in that, The power conversion module includes: The first AC-to-DC module has an input terminal electrically connected to the power input port and an output terminal electrically connected to the first DC power supply circuit. The control power output port is electrically connected to the first DC power supply circuit. The first DC-to-DC module has its input terminal connected in parallel with the control power output port in the first DC power supply circuit, and its output terminal electrically connected to the first DC power supply sub-circuit. The M test power output ports are located in the first DC power supply sub-circuit.

3. The driver board detection device as described in claim 2, characterized in that, The power conversion module further includes: The second DC-to-DC module has its input terminal connected in parallel with the control power output port of the first DC power supply circuit, and its output terminal connected to the second DC power supply sub-circuit. The drive signal generation module includes: A pulse signal generator is provided in parallel with the control power output port in the first DC power supply circuit; A pulse signal amplifier is disposed in the second DC power supply sub-circuit, with its input terminal electrically connected to the output terminal of the pulse signal generator and its output terminal electrically connected to the N drive signal output ports.

4. The driver board detection device as described in claim 3, characterized in that, Also includes: N electro-optical modules are provided, each of which is correspondingly located at one of the drive signal output ports and electrically connected to the output of the pulse signal amplifier.

5. The driver board detection device as described in claim 4, characterized in that, The power conversion module further includes: The third DC-to-DC module has its input terminal connected in parallel with the control power output port in the first DC power circuit, and its output terminal electrically connected to the third DC power sub-circuit. The driver board detection device further includes: N optical-to-electric modules, each of which is configured in a corresponding manner at one of the drive signal output ports; N indicator light modules are connected in parallel in the third DC power supply sub-circuit, and each indicator light module is electrically connected to one of the photoelectric conversion modules.

6. The driver board detection device as described in claim 5, characterized in that, Each of the N indicator light modules specifically includes a first indicator light and a relay; the coil of the relay is connected in series with the corresponding photoelectric conversion module in the same power circuit, and the contacts of the relay are connected in series with the first indicator light.

7. The driver board detection device as described in claim 4, characterized in that, It also includes a changeover switch, the stationary contact of which is electrically connected to the negative terminal of the output of the pulse signal amplifier; each of the N electro-optical modules specifically includes a first light-emitting diode and a second light-emitting diode, the positive terminals of the first and second light-emitting diodes being electrically connected to the positive terminal of the output of the pulse signal amplifier; the negative terminal of the first light-emitting diode is electrically connected to the first moving contact of the changeover switch, and the negative terminal of the second light-emitting diode is electrically connected to the second moving contact of the changeover switch.

8. The driver board detection device as described in claim 2, characterized in that, The power conversion module further includes: The fourth DC-to-DC module has its input terminal connected in parallel with the control power output port in the first DC power circuit, and its output terminal connected to the fourth DC power sub-circuit. The driver board detection device further includes: The second indicator light is located in the fourth DC power supply sub-circuit.

9. The driver board detection device as described in claim 2, characterized in that, The power conversion module further includes: The second AC-to-DC module has its input terminal electrically connected to the power input port and its output terminal electrically connected to the second DC power supply circuit. The power interface of the oscilloscope is electrically connected to the second DC power supply circuit.

10. The driver board detection device as described in claim 1, characterized in that, N is 3, and M is 3.

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