A detection device and detection apparatus

Abstract

The utility model discloses a detection device and detection equipment. Detection device includes power module, first detection module, second detection module and detection switch module, and power module includes energy storage unit, first power output unit, second power output unit and third power output unit, and first power output unit is configured as the alternating voltage of output at least one voltage value, and second power output unit outputs the direct current voltage of at least one voltage value, and third power output unit is configured as the current of output at least one current value, and first detection module is configured to detect the first actual voltage output by first power output unit, the second actual voltage output by second power output unit and the actual current output by third power output unit, and second detection module is configured to detect the parameter information of the measured device, and the parameter information at least includes ground resistance, loop resistance and leakage current. The utility model's scheme improves the efficiency of the measured device detection.

Description

Technical Field

[0001] This utility model relates to the field of detection technology, and in particular to a detection device and detection equipment. Background Technology

[0002] A switchgear is an electrical device. External power lines first enter the main control switch inside the cabinet, then proceed to the branch control switches, with each branch circuit configured according to its needs. The main function of a switchgear is to open, close, control, and protect electrical equipment during the power generation, transmission, distribution, and energy conversion processes of a power system.

[0003] Currently, the commissioning and testing equipment for medium and low voltage switchgear is relatively independent, mainly consisting of withstand voltage testing equipment and grounding resistance testing equipment. It is not possible to perform multi-parameter testing on switchgear. When multi-parameter testing of switchgear is required, multiple testing devices are needed, making the commissioning process cumbersome and inefficient. Utility Model Content

[0004] This invention provides a testing device and equipment to solve the problem of low efficiency in existing switchgear testing equipment.

[0005] According to one aspect of the present invention, a detection device is provided, the detection device comprising:

[0006] A power module includes an energy storage unit, a first power output unit, a second power output unit, and a third power output unit. The first power output unit, the second power output unit, and the third power output unit are all connected between the energy storage unit and the device under test (DUT). The first power output unit is configured to output an AC voltage of at least one voltage value to the DUT based on an initial voltage output by the energy storage unit. The second power output unit is configured to output a DC voltage of at least one voltage value to the DUT based on the initial voltage. The third power output unit is configured to output a current of at least one current value to the DUT based on the initial voltage.

[0007] A first detection module is connected to the first power output unit, the second power output unit and the third power output unit. The first detection module is configured to detect the first actual voltage output by the first power output unit, the second actual voltage output by the second power output unit and the actual current output by the third power output unit.

[0008] A second detection module and a detection switch module are provided. The detection switch module is connected between the energy storage unit and the second detection module. The second detection module is configured to detect the parameter information of the device under test when the detection switch module is closed. The parameter information includes at least grounding resistance, loop resistance and leakage current.

[0009] Optionally, the second detection module includes at least a grounding resistance tester, a loop resistance tester, and a withstand voltage tester;

[0010] The first end of the detection switch module is connected to the energy storage unit;

[0011] The grounding resistance tester, the loop resistance tester, and the withstand voltage tester are respectively connected to the second terminal of the detection switch module; the grounding resistance tester is configured to detect the grounding resistance of the device under test, the loop resistance tester is configured to detect the loop resistance of the device under test, and the withstand voltage tester is configured to detect the leakage current of the device under test.

[0012] Optionally, the power module further includes an inverter and a first switching unit;

[0013] The first side of the inverter is connected to the energy storage unit, and the second side of the inverter is connected to the first side of the first switching unit. The second side of the first switching unit is connected to the first power output unit, the second power output unit, the third power output unit, and the detection switch module, respectively. The inverter is configured to convert the output voltage of the energy storage unit into the initial voltage, which includes at least one phase voltage.

[0014] Optionally, the second side of the first switching unit includes a first output terminal, a second output terminal, a third output terminal, and a fourth output terminal, and the initial voltage includes a three-phase voltage;

[0015] The first power output unit includes a first switching subunit. A first terminal of the first switching subunit is connected to any one of the first output terminal, the second output terminal, and the third output terminal. A second terminal of the first switching subunit is connected to the fourth output terminal. The third and fourth terminals of the first switching subunit are connected to the device under test. The first switching subunit is configured to transmit any phase voltage of the initial voltage output by the inverter to the device under test when the first switching subunit is closed.

[0016] The first power output unit further includes a second switching subunit and a first voltage conversion subunit. The first terminal of the second switching subunit is connected to any one of the first output terminal, the second output terminal, and the third output terminal. The second terminal of the second switching subunit is connected to the fourth output terminal. The third and fourth terminals of the second switching subunit are connected to the first voltage conversion subunit. The first voltage conversion subunit is connected to the device under test. The first voltage conversion subunit is configured to convert any phase voltage of the initial voltage into a first AC voltage output when the second switching subunit is closed.

[0017] The first power output unit further includes a first button, a first relay, a first voltage regulator, and a third switch subunit;

[0018] The first end of the first button is connected to any one of the first output terminal, the second output terminal, and the third output terminal; the second end of the first button is connected to the first end of the first coil in the first relay; the second end of the first coil is connected to the fourth output terminal; the first end of the first switch in the first relay is connected to the first end of the first button; and the second end of the first switch is connected to the first end of the first coil.

[0019] In the first relay, the first terminal of the second switch is connected to any one of the first output terminal, the second output terminal, and the third output terminal; the second terminal of the second switch is connected to the first terminal of the first voltage regulator; the third terminal of the second switch is connected to the fourth output terminal; the fourth terminal of the second switch is connected to the second terminal of the first voltage regulator; the third terminal of the first voltage regulator is connected to the first terminal of the third switch subunit; the second terminal of the first voltage regulator is connected to the second terminal of the third switch subunit; the third terminal and the fourth terminal of the third switch subunit are connected to the device under test; the first relay is configured such that when the first coil is energized, the first switch and the second switch are closed; the first voltage regulator is configured such that when the second switch is closed, it converts any phase voltage of the initial voltage output by the inverter into a second AC voltage output of at least one current value.

[0020] The first power output unit further includes a fourth switch subunit. The first terminal of the fourth switch subunit is connected to the first output terminal, the second terminal of the fourth switch subunit is connected to the second output terminal, the third terminal of the fourth switch subunit is connected to the third output terminal, the fourth terminal of the fourth switch subunit is connected to the fourth output terminal, and the fifth, sixth, seventh, and eighth terminals of the fourth switch subunit are connected to the device under test. The fourth switch subunit is configured to transmit the three-phase voltage of the initial voltage to the device under test when the fourth switch subunit is closed.

[0021] The first power output unit further includes a fifth switching subunit and a second voltage conversion subunit. The first terminal of the fifth switching subunit is connected to the first output terminal, the second terminal of the fifth switching subunit is connected to the second output terminal, the third terminal of the fifth switching subunit is connected to the third output terminal, the fourth terminal of the fifth switching subunit is connected to the fourth output terminal, and the fifth, sixth, seventh, and eighth terminals of the fifth switching subunit are connected to the second voltage conversion subunit. The second voltage conversion subunit is connected to the device under test. The second voltage conversion subunit is configured to convert the three-phase voltage of the initial voltage into a third AC voltage output when the fifth switching subunit is closed.

[0022] The first power output unit also includes a second button, a second relay, a second voltage regulator, and a sixth switch subunit;

[0023] The first end of the second button is connected to any one of the first output terminal, the second output terminal, and the third output terminal; the second end of the second button is connected to the first end of the second coil in the second relay; the second end of the second coil is connected to the fourth output terminal; the first end of the third switch in the second relay is connected to the first end of the second button; and the second end of the third switch is connected to the first end of the second coil.

[0024] In the second relay, the first terminal of the fourth switch is connected to the first output terminal, the second terminal of the fourth switch is connected to the second output terminal, the third terminal of the fourth switch is connected to the third output terminal, the fourth terminal of the fourth switch is connected to the first terminal of the second voltage regulator, the fifth terminal of the fourth switch is connected to the second terminal of the second voltage regulator, the sixth terminal of the fourth switch is connected to the third terminal of the second voltage regulator, the fourth terminal of the second voltage regulator is connected to the fourth output terminal, the fifth terminal of the second voltage regulator is connected to the first terminal of the sixth switch subunit, and the sixth terminal of the second voltage regulator is connected to the second terminal of the sixth switch subunit. The seventh terminal of the voltage regulator is connected to the third terminal of the sixth switch subunit, the fourth terminal of the sixth switch subunit is connected to the fourth output terminal, and the fifth, sixth, seventh, and eighth terminals of the sixth switch subunit are connected to the device under test. The second relay is configured such that when the second button is pressed, the second coil is energized, and the third and fourth switches are closed. The second voltage regulator is configured such that when the fourth switch is closed, it converts the three-phase voltage of the initial voltage into a fourth AC voltage output of at least one voltage value.

[0025] Optionally, the first power output unit further includes a first voltage regulating subunit, which includes a first voltage regulating button, a first voltage regulating relay, a second voltage regulating button, a second voltage regulating relay, and a first voltage regulating motor;

[0026] The first end of the first voltage regulating button is connected to the second power output unit, the second end of the first voltage regulating button is connected to the first end of the first voltage regulating coil of the first voltage regulating relay, and the second end of the first voltage regulating coil is connected to the second power output unit;

[0027] The first voltage regulating switch of the first voltage regulating relay is connected between the first power supply terminal and the first power supply terminal of the first voltage regulating motor, and the second voltage regulating switch of the first voltage regulating relay is connected between the second power supply terminal and the second power supply terminal of the first voltage regulating motor; the first voltage regulating relay is configured to close the first voltage regulating switch and the second voltage regulating switch when the first voltage regulating button is pressed, and the first voltage regulating motor is configured to rotate in a first direction when the first voltage regulating switch and the second voltage regulating switch are closed;

[0028] The first end of the second voltage regulating button is connected to the second power output unit, the second end of the second voltage regulating button is connected to the first end of the second voltage regulating coil of the second voltage regulating relay, and the second end of the second voltage regulating coil is connected to the second power output unit;

[0029] The third voltage regulating switch of the second voltage regulating relay is connected between the first power supply terminal and the second power supply terminal, and the fourth voltage regulating switch of the second voltage regulating relay is connected between the second power supply terminal and the first power supply terminal; the second voltage regulating relay is configured such that when the second voltage regulating button is pressed, the third voltage regulating switch and the fourth voltage regulating switch are closed, and the first voltage regulating motor is configured to rotate in a second direction when the third voltage regulating switch and the fourth voltage regulating switch are closed; wherein, the first direction is clockwise and the second direction is counterclockwise, or, the first direction is counterclockwise and the second direction is clockwise;

[0030] The first voltage regulating subunit also includes a third voltage regulating button, a third voltage regulating relay, a fourth voltage regulating button, a fourth voltage regulating relay, and a second voltage regulating motor;

[0031] The first end of the third voltage regulating button is connected to the second power output unit, the second end of the third voltage regulating button is connected to the first end of the third voltage regulating coil of the third voltage regulating relay, and the second end of the third voltage regulating coil is connected to the second power output unit.

[0032] The fifth voltage regulating switch of the third voltage regulating relay is connected between the first power supply terminal and the third power supply terminal of the second voltage regulating motor, and the sixth voltage regulating switch of the third voltage regulating relay is connected between the second power supply terminal and the fourth power supply terminal of the second voltage regulating motor; the third voltage regulating relay is configured such that when the third voltage regulating button is pressed, the fifth voltage regulating switch and the sixth voltage regulating switch are closed, and the second voltage regulating motor is configured to rotate in the first direction when the fifth voltage regulating switch and the sixth voltage regulating switch are closed;

[0033] The first end of the fourth voltage regulating button is connected to the second power output unit, the second end of the fourth voltage regulating button is connected to the first end of the fourth voltage regulating coil of the fourth voltage regulating relay, and the second end of the fourth voltage regulating coil is connected to the second power output unit.

[0034] The seventh voltage regulating switch of the fourth voltage regulating relay is connected between the first power supply terminal and the fourth power supply terminal, and the eighth voltage regulating switch of the fourth voltage regulating relay is connected between the second power supply terminal and the third power supply terminal; the fourth voltage regulating relay is configured such that when the fourth voltage regulating button is pressed, the seventh voltage regulating switch and the eighth voltage regulating switch are closed, and the second voltage regulating motor is configured to rotate in a second direction when the seventh voltage regulating switch and the eighth voltage regulating switch are closed; wherein, the first direction is clockwise and the second direction is counterclockwise, or, the first direction is counterclockwise and the second direction is clockwise.

[0035] Optionally, the second power output unit includes at least one first DC subunit, at least one second DC subunit, at least one third DC subunit, and at least one fourth DC subunit;

[0036] The first DC subunit includes a first DC switch and a first voltage conversion circuit. A first terminal of the first DC switch is connected to any one of the first output terminal, the second output terminal, and the third output terminal. A second terminal of the first DC switch is connected to the fourth output terminal. The third and fourth terminals of the first DC switch are connected to the first voltage conversion circuit, which is connected to the device under test. The first voltage conversion circuit is configured to convert any phase voltage of the initial voltage into a first DC voltage output when the first DC switch is closed. The first DC voltage output by different first DC subunits has different values.

[0037] The second DC subunit includes a second voltage conversion circuit, a first terminal of which is connected to any one of the first output terminal, the second output terminal, and the third output terminal, and a second terminal of which is connected to the fourth output terminal. The second voltage conversion circuit is configured to convert any phase voltage of the initial voltage into a second DC voltage output.

[0038] The third DC subunit includes a second DC switch, a third voltage conversion circuit, and a knob;

[0039] The first terminal of the second DC switch is connected to any one of the first output terminal, the second output terminal, and the third output terminal; the second terminal of the second DC switch is connected to the fourth output terminal; and the third and fourth terminals of the second DC switch are connected to the third voltage conversion circuit. The third voltage conversion circuit is configured to convert any phase voltage of the initial voltage into a third DC voltage.

[0040] The knob is connected between the third voltage conversion circuit and the device under test, and the knob is used to adjust the voltage value of the third DC voltage;

[0041] The fourth DC subunit includes a third DC switch and a rectifier circuit;

[0042] The first terminal of the third DC switch is connected to the third terminal of the first voltage regulator, the second terminal of the third DC switch is connected to the second terminal of the first voltage regulator, and the third and fourth terminals of the third DC switch are connected to the rectifier circuit.

[0043] The rectifier circuit is connected to the device under test, and the rectifier circuit is configured to convert the second AC voltage output by the first voltage regulator into a fourth DC voltage of at least one voltage value when the third DC switch is closed based on the corresponding second enable signal.

[0044] Optionally, the second side of the first switching unit includes a first output terminal, a second output terminal, a third output terminal, and a fourth output terminal, and the initial voltage includes a three-phase voltage;

[0045] The third power output unit includes a third button, a third relay, a third voltage regulator, and a current switch;

[0046] The first end of the third button is connected to any one of the first output terminal, the second output terminal, and the third output terminal; the second end of the third button is connected to the first end of the third coil in the third relay; the second end of the third coil is connected to the fourth output terminal; the first end of the fifth switch in the third relay is connected to the first end of the third button; and the second end of the fifth switch is connected to the first end of the third coil.

[0047] In the third relay, the first terminal of the sixth switch is connected to the first output terminal, the second terminal of the sixth switch is connected to the second output terminal, the third terminal of the sixth switch is connected to the third output terminal, the fourth terminal of the sixth switch is connected to the first terminal of the third voltage regulator, the fifth terminal of the sixth switch is connected to the second terminal of the third voltage regulator, the sixth terminal of the sixth switch is connected to the third terminal of the third voltage regulator, the fourth terminal of the third voltage regulator is connected to the fourth output terminal, the fifth terminal of the third voltage regulator is connected to the first terminal of the current switch, the sixth terminal of the third voltage regulator is connected to the second terminal of the current switch, the seventh terminal of the third voltage regulator is connected to the third terminal of the current switch, the fourth terminal of the current switch is connected to the fourth output terminal, and the fifth, sixth, seventh, and eighth terminals of the current switch are connected to the device under test. The third relay is configured such that when the third button is pressed, the third coil is energized, and the fifth and sixth switches are closed. The third voltage regulator is configured such that when the sixth switch is closed, it converts the three-phase voltage into a current output of at least one current value.

[0048] Optionally, the detection device further includes a processor, and the first detection module includes: at least one first voltmeter, at least one second voltmeter, and at least one ammeter;

[0049] The first voltmeter is connected to the first power output unit and the processor respectively. The first voltmeter is configured to detect the first actual voltage output by the first power output unit and transmit it to the processor.

[0050] The second voltmeter is connected to the second power output unit and the processor respectively. The second voltmeter is configured to detect the second actual voltage output by the second power output unit and transmit it to the processor.

[0051] The ammeter is connected to the third power output unit and the processor respectively. The ammeter is configured to detect the actual current output by the third power output unit and transmit the actual current to the processor.

[0052] Optionally, the detection device further includes a printer;

[0053] The printer is connected to the second detection module and is configured to print parameter information of the device under test.

[0054] According to another aspect of the present invention, a detection device is provided, the detection device comprising the detection apparatus described in any embodiment of the present invention.

[0055] The technical solution of this utility model embodiment includes a power module with an energy storage unit, enabling the energy storage unit to provide power to the detection device, thus facilitating the movement of the detection device. The power module includes a first power output unit, a second power output unit, and a third power output unit. The first power output unit can output at least one AC voltage value, the second power output unit can output at least one DC voltage value, and the third power output unit can output at least one current value, allowing the detection device to output multiple power sources to meet the power supply requirements of the device under test (DUT). Furthermore, the first detection module can detect the first actual voltage output by the first power output unit, i.e., detect the circuit connecting the DUT to the first power output unit. Based on the first actual voltage, it can determine whether the circuit connecting the DUT to the first power output unit is abnormal. Similarly, the first detection module can detect the second actual voltage output by the second power output unit, thereby detecting whether the circuit connecting the DUT to the second power output unit is abnormal. The first detection module can also detect the actual current output by the third power output unit, thereby detecting whether the circuit connecting the DUT to the third power output unit is abnormal. In this way, multiple circuits of the device under test (DUT) can be tested, and corresponding power can be output according to the needs of the DUT, thereby achieving multiple tests on the DUT. The second detection module can detect the grounding resistance, loop resistance, and leakage current of the DUT. Thus, multi-parameter detection of the DUT can be achieved. That is, the detection device in this embodiment can perform multiple tests on the DUT, integrating multiple detection functions, eliminating the need for frequent changes in detection equipment to test the DUT, and improving detection efficiency.

[0056] It should be understood that the description in this section is not intended to identify key or essential features of embodiments of the present invention, nor is it configured to limit the scope of the present invention. Other features of the present invention will become readily apparent from the following description. Attached Figure Description

[0057] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0058] Figure 1 This is a schematic diagram of the circuit structure of a detection device provided in an embodiment of the present invention;

[0059] Figure 2 This is a schematic diagram of the circuit structure of another detection device provided in an embodiment of the present invention;

[0060] Figure 3This is a schematic diagram of the circuit structure of another detection device provided in this embodiment of the utility model;

[0061] Figure 4 This is a schematic diagram of the circuit structure of a first voltage regulating subunit provided in an embodiment of the present invention;

[0062] Figure 5 This is a schematic diagram of the circuit structure of another detection device provided in this embodiment of the utility model;

[0063] Figure 6 This is a schematic diagram of the circuit structure of another detection device provided in this embodiment of the utility model;

[0064] Figure 7 This is a schematic diagram of the circuit structure of a second voltage regulating subunit provided in an embodiment of the present invention;

[0065] Figure 8 This is a schematic diagram of the circuit structure of a first detection module provided in an embodiment of the present invention;

[0066] Figure 9 This is a schematic diagram of the circuit structure of a zero-position indicator module provided in an embodiment of this utility model;

[0067] Figure 10 This is a schematic diagram of the structure of a testing device provided in an embodiment of this utility model. Detailed Implementation

[0068] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0069] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are configured to distinguish similar objects and are not necessarily configured to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0070] This utility model provides a detection device that can detect switch cabinets, i.e., power distribution cabinets, as well as other electrical equipment, without limitation.

[0071] Figure 1 This is a circuit structure diagram of a detection device provided in an embodiment of the present invention, for reference. Figure 1 The detection device includes:

[0072] The power module 100 includes an energy storage unit 110, a first power output unit 120, a second power output unit 130, and a third power output unit 140. The first power output unit 120, the second power output unit 130, and the third power output unit 140 are all connected between the energy storage unit 110 and the device under test 2. The first power output unit 120 is configured to output an AC voltage of at least one voltage value to the device under test 2 based on the initial voltage output by the energy storage unit 110. The second power output unit 130 is configured to output a DC voltage of at least one voltage value to the device under test 2 based on the initial voltage. The third power output unit 140 is configured to output a current of at least one current value to the device under test 2 based on the initial voltage.

[0073] The first detection module 200 is connected to the first power output unit 120, the second power output unit 130 and the third power output unit 140. The first detection module 200 is configured to detect the first actual voltage output by the first power output unit 120, the second actual voltage output by the second power output unit 130 and the actual current output by the third power output unit 140.

[0074] The second detection module 300 and the detection switch module 400 are connected between the energy storage unit 110 and the second detection module 300. The second detection module 300 is configured to detect the parameter information of the device under test 2 when the detection switch module is closed; wherein, the parameter information includes at least the grounding resistance, the loop resistance and the leakage current.

[0075] The energy storage unit 110 may include an energy storage battery. The first power output unit 120 may include at least one AC voltage output circuit, with different AC voltage values ​​output by different AC voltage output circuits, allowing the first power output unit 120 to output at least one AC voltage value. At least a portion of the AC voltage output circuits may include AC voltage output switches, so that by closing the corresponding AC voltage output switch according to voltage requirements, the corresponding AC voltage output circuit can output the required AC voltage. Similarly, the second power output unit 130 may include at least one DC voltage output circuit, with different DC voltage values ​​output by different DC voltage output circuits, allowing the second power output unit 130 to output at least one DC voltage value. At least a portion of the DC voltage output circuits may include DC voltage output switches, so that by closing the corresponding DC voltage output switch according to voltage requirements, the corresponding DC voltage output circuit can output the required DC voltage. Similarly, the third power output unit 140 may include at least one current output circuit, with different current values ​​output by different current output circuits, allowing the third power output unit 140 to output at least one current value. At least a portion of the current output circuits may include current output switches, so that according to current demand, by closing the corresponding current output switch, the corresponding current output circuit can output the required current. The third power output unit 140 may also include only one current output circuit. The current output circuit may include a voltage regulator. By adjusting the output voltage of the voltage regulator, the output current of the current output circuit can be adjusted to achieve the output of at least one current value.

[0076] The device under test (DUT) 2 can be a switch cabinet, i.e., a power distribution cabinet. The first power output unit 120 may include at least two output interfaces, which can be connected to the DUT 2. The second power output unit 130 may also include at least two output interfaces, which are connected to the DUT 2. Similarly, the third power output unit 140 may include at least two output interfaces, which are connected to the DUT 2.

[0077] The first detection module 200 may include at least one current detection device and at least two voltage detection devices to detect the first actual voltage output by the first power output unit 120, the second actual voltage output by the second power output unit 130, and the actual current output by the third power output unit 140, thereby realizing the power-on test of the device under test 2. The current detection device may be an ammeter, multimeter, or current transformer, etc., and is not limited thereto. The voltage detection device may be a voltmeter, multimeter, etc., and is not limited thereto.

[0078] The second detection module 300 may include multiple detectors to enable the detection of multiple parameters of the device under test 2. The detection switch module 400 may include a double-pole double-throw switch. When it is necessary to use the second detection module 300 to detect the parameter information of the device under test 2, the detection switch module 400 can be closed to energize the second detection module 300 and thus detect the parameter information of the device under test 2.

[0079] Specifically, when the energy storage unit 110 outputs an initial voltage, the first power output unit 120 can output an AC voltage of at least one voltage value based on the initial voltage. The first detection module 200 detects the first actual voltage output by the first power output unit 120 and compares it with the corresponding target voltage of the first power output unit 120. If the first actual voltage deviates significantly from the corresponding target voltage, it can be determined that the circuit of the device under test 2 may be abnormal, thus allowing for further inspection. The target voltage is the voltage that the first power output unit 120 should output. For example, if the initial voltage is a three-phase voltage (e.g., 380V), and one AC output circuit of the first power output unit 120 is connected to the three-phase voltage of the initial voltage, it should output the target voltage of 380V. If the first actual voltage is close to or equal to 380V, it indicates that the circuit of the device under test 2 connected to that AC output circuit is normal. If the first actual voltage deviates significantly from 380V, it indicates that the circuit of the device under test 2 connected to that AC output circuit is abnormal. This allows for the detection of the circuit of the device under test 2. The first power output unit 120 can output AC voltages of various values ​​to meet the testing requirements of various circuits of the device under test 2, and realize the testing of various circuits of the device under test 2.

[0080] Similarly, when the energy storage unit 110 outputs an initial voltage, the second power output unit 130 can output a DC voltage of at least one voltage value according to the initial voltage. The second actual voltage output by the second power output unit 130 can be detected by the first detection module 200. The second actual voltage can be compared with the target voltage of the corresponding second power output unit 130. When the deviation between the second actual voltage and the corresponding target voltage is large, it can be determined that the circuit of the corresponding device under test 2 may be abnormal, so as to carry out further repairs.

[0081] Similarly, when the energy storage unit 110 outputs an initial voltage, the third power output unit 140 can output at least one current value based on the initial voltage. The first detection module 200 detects the actual current output by the third power output unit 140 and compares it with the target current of the corresponding third power output unit 140. If the actual current deviates significantly from the target current, it can be determined that the circuit of the corresponding device under test 2 may be abnormal, thus requiring further inspection. For example, if the target current that the third power output unit 140 should output is calculated to be 5A based on the output resistance in the third power output unit 140, and the actual current is close to or equal to 5A, it indicates that the circuit of the corresponding device under test 2 is not abnormal. If the actual current is greater than 5A, it indicates that the circuit of the corresponding device under test 2 may be abnormal and requires further inspection.

[0082] Specifically, after the AC voltage, DC voltage, and current tests are completed, the outputs of all the first power output units 120, the second power output unit 130, and the third power output unit 140 can be turned off, and the detection switch module 400 can be closed, energizing the second detection module 300. The second detection module 300 can then detect the parameter information of the device under test (DUT) 2, such as the grounding resistance, loop resistance, and leakage current. The leakage current refers to the leakage current of the DUT 2's circuitry obtained during withstand voltage testing. Applying voltage to the circuitry of the DUT 2 and obtaining the leakage current indicates that the insulation strength of the DUT 2's circuitry is high. If the leakage current is very small, for example, close to 0, it indicates that the insulation strength of the DUT 2's circuitry is high.

[0083] In this way, the detection device of this embodiment can integrate multiple tests on the device under test 2, and realize the detection of grounding resistance, loop resistance and leakage current of the device under test 2. This eliminates the need to frequently change the detection equipment when testing the device under test 2, thereby improving the detection efficiency.

[0084] Furthermore, by detecting the first actual voltage, the second actual voltage, and the actual current, overvoltage, overcurrent, and short circuit monitoring can be performed, and the test process can be monitored in real time. In the event of overvoltage, overcurrent, or short circuit, an alert message can be issued to facilitate timely shutdown of the detection device, i.e., stop the output of the power module 100, thereby achieving the effect of protecting the detection device and the device under test 2, and realizing intelligent protection.

[0085] By configuring the power module 100 to include a first power output unit 120, a second power output unit 130, and a third power output unit 140, a modular power supply design is achieved, which facilitates flexible design of hardware structures and interfaces for AC and DC voltages.

[0086] It should be noted that the power module 100 can output a DC voltage of one voltage value, a DC voltage of one voltage value, or a current of one current value to the device under test 2 at a time. The output order can be selected according to the requirements, and no limitation is made here.

[0087] The technical solution of this embodiment, by setting the power module to include an energy storage unit, allows the energy storage unit to provide power to the detection device, making the detection device easy to move. The power module includes a first power output unit, a second power output unit, and a third power output unit. The first power output unit can output at least one AC voltage value, the second power output unit can output at least one DC voltage value, and the third power output unit can output at least one current value, enabling the detection device to output multiple power sources to meet the power supply requirements of the device under test (DUT). Furthermore, the first detection module can detect the first actual voltage output by the first power output unit, i.e., detect the circuit of the DUT connected to the first power output unit. Based on the first actual voltage, it can determine whether the circuit connecting the DUT to the first power output unit is abnormal. Similarly, the first detection module can detect the second actual voltage output by the second power output unit, thereby detecting whether the circuit connecting the DUT to the second power output unit is abnormal. The first detection module can also detect the actual current output by the third power output unit, thereby detecting whether the circuit connecting the DUT to the third power output unit is abnormal. In this way, multiple circuits of the DUT can be detected, and corresponding power can be output according to the needs of the DUT, thus achieving multiple detection methods for the DUT. The second detection module can detect the grounding resistance, loop resistance, and leakage current of the device under test (DUT). This enables multi-parameter detection of the DUT, meaning the detection device in this embodiment can perform various tests on the DUT, integrating multiple detection functions. It eliminates the need for frequent changes in testing equipment, thus improving detection efficiency.

[0088] Based on the above technical solutions, Figure 2 This is a circuit structure diagram of another detection device provided in an embodiment of the present invention. Optionally, refer to... Figure 2 The second detection module 300 includes at least a grounding resistance tester 310, a loop resistance tester 320, and a withstand voltage tester 330;

[0089] The first end of the detection switch module 400 is connected to the energy storage unit 110;

[0090] The grounding resistance tester 310, the loop resistance tester 320, and the withstand voltage tester 330 are respectively connected to the second terminal of the detection switch module 400; the grounding resistance tester 310 is configured to detect the grounding resistance of the device under test 2, the loop resistance tester 320 is configured to detect the loop resistance of the device under test 2, and the withstand voltage tester 330 is configured to detect the leakage current of the device under test 2.

[0091] Specifically, after the detection switch module 400 is closed, the grounding resistance tester 310, the loop resistance tester 320, and the withstand voltage tester 330 are energized. According to the testing requirements of the device under test (DUT) 2, the start switches of the grounding resistance tester 310, the loop resistance tester 320, and the withstand voltage tester 330 are pressed sequentially to test the grounding resistance, loop resistance, and leakage current of the DUT 2 in sequence. By setting the second detection module 300 to include at least the grounding resistance tester 310, the loop resistance tester 320, and the withstand voltage tester 330, multi-parameter testing of the DUT 2 can be performed, which helps to improve the testing efficiency of the DUT 2.

[0092] Based on the above technical solutions, Figure 3 This is a circuit structure diagram of another detection device provided in an embodiment of the present invention. Optionally, refer to... Figure 3 The power module 100 also includes an inverter 150 and a first switching unit 160;

[0093] The first side of the inverter 150 is connected to the energy storage unit 110, and the second side of the inverter 150 is connected to the first side of the first switching unit 160. The second side of the first switching unit 160 is connected to the first power output unit 120, the second power output unit 130, the third power output unit 140, and the detection switch module 400, respectively. The inverter 150 is configured to convert the output voltage of the energy storage unit 110 into an initial voltage, which includes at least one phase voltage.

[0094] The inverter 150 can convert the DC voltage output by the energy storage unit 110 into an initial voltage, i.e., an AC voltage, which may include at least one phase voltage. Figure 3 The illustration shows a case where the initial voltage is a three-phase voltage, but it is not limiting. The first switching unit 160 may include a power switch 161, which may be a multi-pole multi-throw switch. The second side of the inverter 150 is connected to the first side of the power switch 161. The second side of the power switch 161 is connected to the first power output unit 120, the second power output unit 130, the third power output unit 140, and the detection switch module 400, respectively. After closing the power switch 161, the initial voltage output by the inverter 150 can be output to the first power output unit 120, the second power output unit 130, and the third power output unit 140, etc.

[0095] Specifically, the energy storage unit 110 is connected to the first power output unit 120, the second power output unit 130, and the third power output unit 140 through the inverter 150 and the power switch 161 in the first switching unit 160. When the first switching unit 160 is closed (i.e., the power switch 161 in the first switching unit 160), it can supply power to the first power output unit 120, the second power output unit 130, and the third power output unit 140.

[0096] Based on the above technical solutions, optionally, refer to Figure 3 The second side of the first switching unit includes a first output terminal A3, a second output terminal B3, a third output terminal C3 and a fourth output terminal N3, and the initial voltage includes three-phase voltage;

[0097] The first power output unit 120 includes a first switch subunit 121. The first terminal of the first switch subunit 121 is connected to any one of the first output terminal A3, the second output terminal B3, and the third output terminal C3. The second terminal of the first switch subunit 121 is connected to the fourth output terminal N3. The third and fourth terminals of the first switch subunit 121 are connected to the device under test 2. The first switch subunit 121 is configured to transmit any phase voltage of the initial voltage output by the inverter 150 to the device under test 2 when the first switch subunit 121 is closed.

[0098] The first power output unit 120 further includes a second switching subunit 122 and a first voltage conversion subunit 123. The first terminal of the second switching subunit 122 is connected to any one of the first output terminal A3, the second output terminal B3 and the third output terminal C3. The second terminal of the second switching subunit 122 is connected to the fourth output terminal N3. The third terminal and the fourth terminal of the second switching subunit 122 are connected to the first voltage conversion subunit 123. The first voltage conversion subunit 123 is connected to the device under test 2. The first voltage conversion subunit 123 is configured to convert any phase voltage of the initial voltage into a first AC voltage output when the second switching subunit 122 is closed.

[0099] The first power output unit 120 also includes a first button AQ1, a first relay, a first voltage regulator TY1, and a third switch subunit 124;

[0100] The first end of the first button AQ1 is connected to any one of the first output terminal A3, the second output terminal B3, and the third output terminal C3. The second end of the first button AQ1 is connected to the first end of the first coil KM11 in the first relay. The second end of the first coil KM11 is connected to the fourth output terminal N3. The first end of the first switch KM12 in the first relay is connected to the first end of the first button AQ1. The second end of the first switch KM12 is connected to the first end of the first coil KM11.

[0101] The first terminal of the second switch KM13 in the first relay is connected to any one of the first output terminal A3, the second output terminal B3, and the third output terminal C3. The second terminal of the second switch KM13 is connected to the first terminal of the first voltage regulator TY1. The third terminal of the second switch KM13 is connected to the fourth output terminal. The fourth terminal of the second switch KM13 is connected to the second terminal of the first voltage regulator TY1. The third terminal of the first voltage regulator TY1 is connected to the first terminal of the third switch subunit 124. The second terminal of the first voltage regulator TY1 is connected to the second terminal of the third switch subunit 124. The third terminal E3 and the fourth terminal E4 of the third switch subunit 124 are connected to the device under test 2. The first relay is configured such that when the first coil KM11 is energized, the first switch KM12 and the second switch KM13 are closed. The first voltage regulator TY1 is configured such that when the second switch KM13 is closed, it converts any phase voltage of the initial voltage output by the inverter 150 into a second AC voltage output with at least one current value.

[0102] The first power output unit 120 also includes a fourth switch subunit 125. The first end of the fourth switch subunit 125 is connected to the first output terminal A3, the second end of the fourth switch subunit 125 is connected to the second output terminal B3, the third end of the fourth switch subunit 125 is connected to the third output terminal C3, the fourth end of the fourth switch subunit 125 is connected to the fourth output terminal N3, and the fifth, sixth, seventh and eighth ends of the fourth switch subunit 125 are connected to the device under test 2. The fourth switch subunit 125 is configured to transmit the three-phase voltage of the initial voltage to the device under test 2 when the fourth switch subunit 125 is closed.

[0103] The first power output unit 120 also includes a fifth switch subunit 126 and a second voltage conversion subunit 127. The first terminal of the fifth switch subunit 126 is connected to the first output terminal A3, the second terminal of the fifth switch subunit 126 is connected to the second output terminal B3, the third terminal of the fifth switch subunit 126 is connected to the third output terminal C3, the fourth terminal of the fifth switch subunit 126 is connected to the fourth output terminal N3, and the fifth, sixth, seventh and eighth terminals of the fifth switch subunit 126 are connected to the second voltage conversion subunit 127. The second voltage conversion subunit 127 is connected to the device under test. The second voltage conversion subunit 127 is configured to convert the three-phase voltage of the initial voltage into a third AC voltage output when the fifth switch subunit 126 is closed.

[0104] The first power output unit 120 also includes a second button AQ2, a second relay, a second voltage regulator TY2, and a sixth switch subunit 128;

[0105] The first end of the second button AQ2 is connected to any one of the first output terminal A3, the second output terminal B3, and the third output terminal C3. The second end of the second button AQ2 is connected to the first end of the second coil KM21 in the second relay. The second end of the second coil KM21 is connected to the fourth output terminal N3. The first end of the third switch KM22 in the second relay is connected to the first end of the second button AQ2. The second end of the third switch KM22 is connected to the first end of the second coil KM21.

[0106] In the second relay, the first terminal of the fourth switch KM23 is connected to the first output terminal A3; the second terminal of the fourth switch KM23 is connected to the second output terminal B3; the third terminal of the fourth switch KM23 is connected to the third output terminal C3; the fourth terminal of the fourth switch KM23 is connected to the first terminal of the second voltage regulator TY2; the fifth terminal of the fourth switch KM23 is connected to the second terminal of the second voltage regulator TY2; the sixth terminal of the fourth switch KM23 is connected to the third terminal of the second voltage regulator TY2; the fourth terminal of the second voltage regulator TY2 is connected to the fourth output terminal N3; the fifth terminal of the second voltage regulator TY2 is connected to the first terminal of the sixth switch subunit 128; and the sixth terminal of the second voltage regulator TY2 is connected to the second terminal of the sixth switch subunit 128. The seventh terminal of the second voltage regulator TY2 is connected to the third terminal of the sixth switch subunit 128. The fourth terminal of the sixth switch subunit 128 is connected to the fourth output terminal N3. The fifth terminal E5, the sixth terminal E6, the seventh terminal E7, and the eighth terminal E8 of the sixth switch subunit 128 are connected to the device under test 2. The second relay is configured such that when the second button AQ2 is pressed, the second coil KM21 is energized, and the third switch KM22 and the fourth switch KM23 are closed. The second voltage regulator TY2 is configured such that when the fourth switch KM23 is closed, it converts the three-phase voltage of the initial voltage into a fourth AC voltage output of at least one voltage value.

[0107] The first output terminal A3, the second output terminal B3, and the third output terminal C3 are connected to the live wire, and the fourth output terminal N3 is connected to the neutral wire. The first switch subunit 121 may include a double-pole double-throw switch, for example, with an initial three-phase voltage of 380V and a single-phase voltage of 220V. When it is necessary to test the circuit of the device under test 2 connected to 220V, the first switch subunit 121 can be closed to output any phase voltage of the initial voltage to the device under test 2, that is, to output a single-phase voltage to the device under test 2. The first detection module 200 can be connected to the third and fourth terminals of the first switch subunit 121. When the first switch subunit 121 is closed, it can detect the first actual voltage output by the first switch subunit 121 to the device under test 2. By comparing the first actual voltage with the voltage value of the single-phase voltage of the initial voltage, it can be determined whether the circuit of the device under test 2 connected to the first switch subunit 121 is abnormal. After completing the test of the circuit connecting the device under test 2 to the first switch subunit 121, the first switch subunit 121 can be disconnected.

[0108] The second switching subunit 122 may include a double-pole double-throw switch, and the first voltage conversion subunit 123 may include a boost circuit or a buck circuit, thereby converting the initial single-phase voltage into a first AC voltage output. For example, the first voltage conversion subunit 123 may include a buck voltage; for example, if the initial three-phase voltage is 380V and the single-phase voltage is 220V, the first voltage conversion subunit 123 converts the 220V voltage into a 24V AC voltage output. When it is necessary to test the circuit of the device under test 2 connected to 24V, the second switching subunit 122 can be closed to output a 24V AC voltage to the device under test 2. The first detection module 200 can be connected to the first voltage conversion subunit 123. When the second switching subunit 122 is closed, it can detect the first actual voltage output by the first voltage conversion subunit 123 to the device under test 2. By comparing the first actual voltage with the first AC voltage, it can determine whether the circuit of the device under test 2 connected to the first voltage conversion subunit 123 is abnormal. After completing the test of the circuit connecting the device under test 2 to the first voltage conversion subunit 123, the second switch subunit 122 can be disconnected.

[0109] Specifically, after pressing the first button AQ1, the first coil KM11 of the first relay is energized, causing the first switch KM12 of the first relay to close. The first end of the first switch KM12 is connected to the first end of the first button AQ1, and the second end of the first switch KM12 is connected to the first end of the first coil KM11, thus forming a self-locking mechanism to ensure that the first coil KM11 is energized. When the first coil KM11 is energized, the second switch KM13 of the first relay closes. After closing the third switch subunit 124, the first voltage regulator TY1 is energized. The first voltage regulator TY1 converts the single-phase voltage (any phase voltage of the initial voltage) and outputs a second AC voltage. By adjusting the first voltage regulator TY1 (for example, adjusting the number of coil turns connected to the circuit of the first voltage regulator TY1), the voltage value of the second AC voltage output by the first voltage regulator TY1 can be adjusted to achieve the output of at least one second AC voltage value. For example, the second AC voltage can be a voltage value between 0-250V, which facilitates the testing of multiple circuits of the device under test 2, thereby improving the testing efficiency. The third switch subunit 124 may include a double-pole double-throw switch. It should be noted that the third switch subunit 124 can be connected to the interface of the device under test (DUT) 2 via a pluggable interface. After adjusting the voltage output of the first voltage regulator TY1, the interface connected to the DUT 2 can be changed to achieve testing of different circuits. The first detection module 200 can be connected to the third and fourth terminals of the third switch subunit 124. When the third switch subunit 124 is closed, it can detect the first actual voltage output from the third switch subunit 124 to the DUT 2. By comparing the first actual voltage with the second AC voltage, it can determine whether the circuit of the DUT 2 connected to the third switch subunit 124 is abnormal. After completing the test of the circuit of the DUT 2 connected to the third switch subunit 124, the third switch subunit 124 can be disconnected.

[0110] Optionally, refer to Figure 3 The first relay may also include a first closing indicator light D1, which is connected in parallel with the first coil KM11, so that when the first switch KM12 is closed, the first closing indicator light D1 illuminates to indicate the status of the first relay.

[0111] Optionally, refer to Figure 3 The first relay may further include a first normally closed switch KM14 and a first trip indicator light D2, which are connected in series between the first output terminal A3 and the fourth output terminal N3. When the first coil KM11 is not energized, the first normally closed switch KM14 is closed, and the first trip indicator light D2 illuminates, indicating the status of the first relay. When the first coil KM11 is energized, the first normally closed switch KM14 is open, and the first trip indicator light D2 does not illuminate.

[0112] The fourth switch subunit 125 may include a multi-pole multi-throw switch. For example, if the initial three-phase voltage is 380V, and the circuit connected to the device under test (DUT) 2 needs to be tested at 380V, the fourth switch subunit 125 can be closed, causing it to output the initial three-phase voltage to the DUT 2. The first detection module 200 can be connected to the fifth, sixth, seventh, and eighth terminals of the fourth switch subunit 125. When the fourth switch subunit 125 is closed, it can detect the first actual voltage output to the DUT 2. By comparing the first actual voltage with the initial three-phase voltage, it can determine whether the circuit connected to the fourth switch subunit 125 is abnormal. After completing the test of the circuit connected to the fourth switch subunit 125, the fourth switch subunit 125 can be disconnected.

[0113] The fifth switching subunit 126 may include a multi-pole multi-throw switch, and the second voltage conversion subunit 127 may include a boost circuit or a buck circuit to convert the initial three-phase voltage into a third AC voltage output. For example, the second voltage conversion subunit 127 may include a buck circuit. For instance, if the initial three-phase voltage is 380V, the second voltage conversion subunit 127 converts the 380V voltage into a 110V AC voltage output. When it is necessary to test the circuit of the device under test 2 connected to 110V, the second switching subunit 122 can be closed to output a 110V AC voltage to the device under test 2. The first detection module 200 can be connected to the second voltage conversion subunit 127. When the fifth switching subunit 126 is closed, it can detect the first actual voltage output by the second voltage conversion subunit 127 to the device under test 2. By comparing the first actual voltage with the third AC voltage value, it can determine whether the circuit of the device under test 2 connected to the second voltage conversion subunit 127 is abnormal. After completing the test of the circuit connecting the device under test 2 to the second voltage conversion subunit 127, the fifth switch subunit 126 can be disconnected.

[0114] The sixth switch subunit 128 may include a multi-pole multi-throw switch. After pressing the second button AQ2, the second coil KM21 of the second relay is energized, causing the third switch KM22 of the second relay to close. The first terminal of the third switch KM22 is connected to the first terminal of the second button AQ2, and the second terminal of the third switch KM22 is connected to the first terminal of the second coil KM21, thus forming a self-locking mechanism to ensure that the second coil KM21 is energized. When the second coil KM21 is energized, the fourth switch KM23 of the second relay closes. After closing the sixth switch subunit 128, the second voltage regulator TY2 is energized. The second voltage regulator TY2 converts the three-phase voltage of the initial voltage to output a fourth AC voltage. By adjusting the second voltage regulator TY2 (e.g., adjusting the number of coil turns connected to the circuit), the voltage value of the fourth AC voltage output by the second voltage regulator TY2 can be adjusted, achieving the output of at least one fourth AC voltage value. For example, the fourth AC voltage can be a voltage value between 0-690V, facilitating the testing of multiple circuits of the device under test 2, thereby improving testing efficiency. The sixth switch subunit 128 may include a multi-pole multi-throw switch. It should be noted that the sixth switch subunit 128 can be connected to the interface of the device under test (DUT) 2 via a pluggable interface. After adjusting the voltage output of the second voltage regulator TY2, the interface connected to the DUT 2 can be changed to achieve testing of different circuits. The first detection module 200 can be connected to the fifth, sixth, seventh, and eighth terminals of the sixth switch subunit 128. When the sixth switch subunit 128 is closed, it can detect the first actual voltage output from the sixth switch subunit 128 to the DUT 2. By comparing the first actual voltage with the fourth AC voltage, it can determine whether the circuit of the DUT 2 connected to the sixth switch subunit 128 is abnormal. After completing the test of the circuit of the DUT 2 connected to the sixth switch subunit 128, the sixth switch subunit 128 can be disconnected.

[0115] Optionally, refer to Figure 3 The second relay may also include a second closing indicator light D3, which is connected in parallel with the second coil KM21, so that when the third switch KM22 is closed, the second closing indicator light D3 lights up to indicate the status of the second relay.

[0116] Optionally, refer to Figure 3The second relay may further include a second normally closed switch KM24 and a second trip indicator light D4, which are connected in series between the first output terminal A3 and the fourth output terminal N3. When the second coil KM21 is not energized, the second normally closed switch KM24 is closed, and the second trip indicator light D4 illuminates, indicating the status of the second relay. When the second coil KM21 is energized, the second normally closed switch KM24 is open, and the second trip indicator light D4 does not illuminate.

[0117] Based on the above technical solutions, Figure 4 This is a circuit structure diagram of a first voltage regulating subunit provided in an embodiment of the present invention. Optionally, refer to... Figure 4 The first power output unit 120 also includes a first voltage regulating subunit 129, which includes a first voltage regulating button SQ1, a first voltage regulating relay, a second voltage regulating button SQ2, a second voltage regulating relay, and a first voltage regulating motor M1.

[0118] The first end of the first voltage regulating button SQ1 is connected to the second power output unit 130, the second end of the first voltage regulating button SQ1 is connected to the first end of the first voltage regulating coil ZJ41 of the first voltage regulating relay, and the second end of the first voltage regulating coil ZJ41 is connected to the second power output unit 130.

[0119] The first voltage regulating switch ZJ42 of the first voltage regulating relay is connected between the first power supply terminal A+ and the first power supply terminal of the first voltage regulating motor, and the second voltage regulating switch ZJ43 of the first voltage regulating relay is connected between the second power supply terminal COMA and the second power supply terminal of the first voltage regulating motor M1; the first voltage regulating relay is configured such that when the first voltage regulating button SQ1 is pressed, the first voltage regulating switch ZJ42 and the second voltage regulating switch ZJ43 are closed, and the first voltage regulating motor M1 is configured to rotate in the first direction when the first voltage regulating switch ZJ42 and the second voltage regulating switch ZJ43 are closed;

[0120] The first end of the second voltage regulating button SQ2 is connected to the second power output unit 130, the second end of the second voltage regulating button SQ2 is connected to the first end of the second voltage regulating coil ZJ51 of the second voltage regulating relay, and the second end of the second voltage regulating coil ZJ51 is connected to the second power output unit 130.

[0121] The third voltage regulating switch ZJ52 of the second voltage regulating relay is connected between the first power supply terminal A+ and the second power supply terminal, and the fourth voltage regulating switch ZJ53 of the second voltage regulating relay is connected between the second power supply terminal COMA and the first power supply terminal. The second voltage regulating relay is configured such that when the second voltage regulating button SQ2 is pressed, the third voltage regulating switch ZJ52 and the fourth voltage regulating switch ZJ53 are closed, and the first voltage regulating motor M1 is configured to rotate in a second direction when the third voltage regulating switch ZJ52 and the fourth voltage regulating switch ZJ53 are closed; wherein, the first direction is clockwise and the second direction is counterclockwise, or the first direction is counterclockwise and the second direction is clockwise.

[0122] The first voltage regulating subunit 129 also includes a third voltage regulating button SQ3, a third voltage regulating relay, a fourth voltage regulating button SQ4, a fourth voltage regulating relay, and a second voltage regulating motor M2;

[0123] The first end of the third voltage regulating button SQ3 is connected to the second power output unit 130, the second end of the third voltage regulating button SQ3 is connected to the first end of the third voltage regulating coil ZJ61 of the third voltage regulating relay, and the second end of the third voltage regulating coil ZJ61 is connected to the second power output unit 130.

[0124] The fifth voltage regulating switch ZJ62 of the third voltage regulating relay is connected between the first power supply terminal A+ and the third power supply terminal of the second voltage regulating motor M2, and the sixth voltage regulating switch ZJ63 of the third voltage regulating relay is connected between the second power supply terminal COMA and the fourth power supply terminal of the second voltage regulating motor M2; the third voltage regulating relay is configured such that when the third voltage regulating button SQ3 is pressed, the fifth voltage regulating switch ZJ62 and the sixth voltage regulating switch ZJ63 are closed, and the second voltage regulating motor M2 is configured to rotate in the first direction when the fifth voltage regulating switch ZJ62 and the sixth voltage regulating switch ZJ63 are closed;

[0125] The first end of the fourth voltage regulating button SQ4 is connected to the second power output unit 130, the second end of the fourth voltage regulating button SQ4 is connected to the first end of the fourth voltage regulating coil ZJ71 of the fourth voltage regulating relay, and the second end of the fourth voltage regulating coil ZJ71 is connected to the second power output unit 130.

[0126] The seventh voltage regulating switch ZJ72 of the fourth voltage regulating relay is connected between the first power supply terminal A+ and the fourth power supply terminal, and the eighth voltage regulating switch ZJ73 of the fourth voltage regulating relay is connected between the second power supply terminal COMA and the third power supply terminal. The fourth voltage regulating relay is configured such that when the fourth voltage regulating button SQ4 is pressed, the seventh voltage regulating switch ZJ72 and the eighth voltage regulating switch ZJ73 are closed, and the second voltage regulating motor M2 is configured to rotate in a second direction when the seventh voltage regulating switch ZJ72 and the eighth voltage regulating switch ZJ73 are closed; wherein, the first direction is clockwise and the second direction is counterclockwise, or the first direction is counterclockwise and the second direction is clockwise.

[0127] The first direction is clockwise, and the second direction is counterclockwise, or vice versa; that is, the first direction is forward rotation of the motor (first voltage regulating motor M1 and second voltage regulating voltage M2), and the second direction is reverse rotation of the motor (first voltage regulating motor M1 and second voltage regulating voltage M2), or the first direction is reverse rotation of the motor, and the second direction is forward rotation of the motor. No limitation is imposed here. For example, the first power supply terminal A+ and the second power supply terminal COMA can be connected to the second power output unit 130. For example, the first terminal of the first voltage regulating button SQ1 can also be connected to the first power supply terminal A+, and the second terminal of the first voltage regulating coil ZJ41 can also be connected to the second power supply terminal COMA. The first power supply terminal of the first voltage regulating motor M1 is a positive power supply terminal, and the second power supply terminal is a negative power supply terminal, or vice versa. The third power supply terminal of the second voltage regulating motor M2 is a positive power supply terminal, and the fourth power supply terminal is a negative power supply terminal, or vice versa. No limitation is imposed here.

[0128] Specifically, after pressing the first button AQ1, the first coil KM11 of the first relay is energized, causing the first switch KM12 of the first relay to close and the second switch KM13 of the first relay to close. At this time, either the first voltage regulating button SQ1 or the second voltage regulating button SQ2 can be pressed. After pressing the first voltage regulating button SQ1, the first voltage regulating coil ZJ41 is energized, and the first voltage regulating switch ZJ42 and the second voltage regulating switch ZJ43 are closed. The first voltage regulating motor M1 rotates in the first direction, driving the main shaft on the first voltage regulator TY1 to rotate, thereby adjusting the number of turns of the coil connected to the circuit by the first voltage regulator TY1, thus adjusting the output voltage of the first voltage regulator TY1. After pressing the second voltage regulating button SQ2, the second voltage regulating coil ZJ51 is energized, and the third voltage regulating switch ZJ52 and the fourth voltage regulating switch ZJ53 are closed. The first voltage regulating motor M1 rotates in the second direction, driving the main shaft on the first voltage regulator TY1 to rotate, thereby adjusting the number of turns of the coil connected to the circuit by the first voltage regulator TY1, thus adjusting the output voltage of the first voltage regulator TY1. For example, when the first voltage-regulating motor M1 rotates in the first direction, the number of turns of the coil connected to the circuit by the first voltage regulator TY1 is reduced; when the first voltage-regulating motor M1 rotates in the second direction, the number of turns of the coil connected to the circuit by the first voltage regulator TY1 is increased. Alternatively, when the first voltage-regulating motor M1 rotates in the first direction, the number of turns of the coil connected to the circuit by the first voltage regulator TY1 is increased; when the first voltage-regulating motor M1 rotates in the second direction, the number of turns of the coil connected to the circuit by the first voltage regulator TY1 is reduced. In this way, the output voltage of the first voltage regulator TY1 is adjusted. Then, by closing the third switch subunit 124, the second AC voltage output by the first voltage regulator TY1 can be transmitted to the device under test 2.

[0129] After pressing the second button AQ2, the second coil KM21 of the second relay is energized, causing the third switch KM22 and the fourth switch KM23 of the second relay to close. By pressing the third voltage adjustment button SQ3 or the fourth voltage adjustment button SQ4, the voltage output of the second voltage regulator TY2 can be adjusted. The specific adjustment process is the same as that of the first voltage regulator TY1, and will not be described again here. Then, closing the sixth switch subunit 128 allows the fourth AC voltage to be output to the device under test 2.

[0130] Optionally, refer to Figure 4 The first voltage regulating subunit 129 also includes a first rotation indicator D5, a second rotation indicator D6, a third rotation indicator D7, and an eighth rotation indicator D8;

[0131] The first rotation indicator D5 is connected in parallel with the first voltage regulating coil ZJ41, the second rotation indicator D6 is connected in parallel with the second voltage regulating coil ZJ51, the third rotation indicator D7 is connected in parallel with the third voltage regulating coil ZJ61, and the fourth rotation indicator D8 is connected in parallel with the fourth voltage regulating coil ZJ71.

[0132] Thus, when the first voltage regulating coil ZJ41 is energized, the first rotation indicator D5 illuminates, indicating the rotation direction of the first voltage regulating motor M1. When the second voltage regulating coil ZJ51 is energized, the second rotation indicator D6 illuminates, indicating the rotation direction of the second voltage regulating motor M1. The first rotation indicator D5 and the second rotation indicator D6 emit different colors; for example, the first rotation indicator D5 emits yellow, and the second rotation indicator D6 emits blue, thereby distinguishing the different rotation directions of the first voltage regulating motor M1. The working principle of the third rotation indicator D7 and the fourth rotation indicator D8 is similar and will not be described in detail here.

[0133] Based on the above technical solutions, Figure 5 This is a circuit structure diagram of another detection device provided in an embodiment of the present invention. Optionally, refer to... Figure 5 The second power output unit 130 includes at least one first DC subunit 131, at least one second DC subunit 132, at least one third DC subunit 133 and at least one fourth DC subunit 134;

[0134] The first DC subunit 131 includes a first DC switch Q1 and a first voltage conversion circuit U1. The first terminal of the first DC switch Q1 is connected to any one of the first output terminal A3, the second output terminal B3, and the third output terminal C3. The second terminal of the first DC switch Q1 is connected to the fourth output terminal N3. The third and fourth terminals of the first DC switch Q1 are connected to the first voltage conversion circuit U1, which is connected to the device under test 2. The first voltage conversion circuit U1 is configured to convert any phase voltage of the initial voltage into a first DC voltage output when the first DC switch Q1 is closed. The voltage values ​​of the first DC voltage output by different first DC subunits 131 are different.

[0135] The second DC subunit 132 includes a second voltage conversion circuit U2. The first terminal of the second voltage conversion circuit U2 is connected to any one of the first output terminal A3, the second output terminal B3 and the third output terminal C3. The second terminal of the second voltage conversion circuit U2 is connected to the fourth output terminal N3. The second voltage conversion circuit U2 is configured to convert any phase voltage of the initial voltage into a second DC voltage output.

[0136] The third DC subunit 133 includes a second DC switch Q2, a third voltage conversion circuit U3, and a knob K1;

[0137] The first terminal of the second DC switch Q2 is connected to any one of the first output terminal A3, the second output terminal B3, and the third output terminal C3; the second terminal of the second DC switch Q2 is connected to the fourth output terminal N3; and the third terminal and the fourth terminal of the second DC switch Q2 are connected to the third voltage conversion circuit U3. The third voltage conversion circuit U3 is configured to convert any phase voltage of the initial voltage into a third DC voltage.

[0138] Knob K1 is connected between the third voltage conversion circuit U3 and the device under test 2. Knob K1 is used to adjust the voltage value of the third DC voltage.

[0139] The fourth DC subunit 134 includes a third DC switch Q3 and a rectifier circuit KB;

[0140] The first terminal of the third DC switch Q3 is connected to the third terminal E1 of the first voltage regulator TY1, the second terminal of the third DC switch Q3 is connected to the second terminal E2 of the first voltage regulator TY1, and the third and fourth terminals of the third DC switch Q3 are connected to the rectifier circuit KB1.

[0141] The rectifier circuit KB1 is connected to the device under test 2. The rectifier circuit KB1 is configured to convert the second AC voltage output by the first voltage regulator TY1 into a fourth DC voltage of at least one voltage value when the third DC switch Q3 is closed based on the corresponding second enable signal.

[0142] The first DC switch Q1 can be a double-pole double-throw switch, and the first voltage conversion circuit U1 can include a rectifier circuit to convert the AC power output from the inverter 150 into DC power output, thereby enabling the second power output unit 130 to output DC voltage. The DC voltage output by the first voltage conversion circuit U1 in different first DC sub-units 131 varies, allowing for the detection of multiple circuits of the device under test 2. For example, the second power output unit 130 includes four first DC sub-units 131, which can output DC voltages of 12V, 24V, 110V, and 220V respectively, but this is not limited. The first detection module 200 can be connected to the first voltage conversion circuit U1. When the first DC switch Q1 is closed, it can detect the second actual voltage output by the first voltage conversion circuit U1 to the device under test 2. By comparing the second actual voltage with the first DC voltage output by the first voltage conversion circuit U1, it can determine whether the circuit of the device under test 2 connected to the first voltage conversion circuit U1 is abnormal. After completing the test of the circuit connecting the device under test 2 to the first voltage conversion circuit U1, the first DC switch Q1 can be disconnected.

[0143] The second voltage conversion circuit U2 may include a rectifier circuit, which can convert the AC power output by the inverter 150 into a second DC voltage output, for example, output to the first power supply terminal A+ and the second power supply terminal COMA connected to the first voltage regulating motor M1 and the second voltage regulating motor M2, to supply power to the first voltage regulating motor M1 and the second voltage regulating motor M2.

[0144] The second DC switch Q2 can be a double-pole double-throw switch, and the third voltage conversion circuit U3 can include a rectifier circuit. A knob K1 can be connected to the output resistor of the third voltage conversion circuit U3, allowing adjustment of the output voltage of the third voltage conversion circuit U3 by rotating K1. For example, it can achieve a voltage output between 0-10V. The first detection module 200 can be connected to the third voltage conversion circuit U3. When the second DC switch Q2 is closed, it can detect the second actual voltage output from the third voltage conversion circuit U3 to the device under test 2. By comparing the second actual voltage with the third DC voltage output from the third voltage conversion circuit U3, it can determine whether the circuit connecting the device under test 2 to the third voltage conversion circuit U3 is abnormal. After completing the test of the circuit connecting the device under test 2 to the third voltage conversion circuit U3, the second DC switch Q2 can be disconnected.

[0145] The third DC switch Q3 can be a double-pole double-throw switch. The first terminal of Q3 is connected to the third terminal E1 of the first voltage regulator TY1, and the second terminal is connected to the second terminal E2 of TY1. It can share the first voltage regulator TY1 with the first power output unit 120, thus reducing the number of components. The rectifier circuit KB converts the AC voltage output from the first voltage regulator TY1 into a DC voltage output to the device under test (DUT) 2. For example, it can output a DC voltage between 0-250V to DUT 2. The first detection module 200 can be connected to the rectifier circuit KB. When the third DC switch Q3 is closed, it can detect the second actual voltage output from the rectifier circuit KB to DUT 2. By comparing the second actual voltage with the fourth DC voltage output from the rectifier circuit KB, it can determine whether the circuit connecting DUT 2 to the rectifier circuit KB is abnormal. After completing the test of the circuit connecting DUT 2 to the rectifier circuit KB, the third DC switch Q3 can be disconnected.

[0146] Based on the above technical solutions, Figure 6 This is a circuit structure diagram of another detection device provided in an embodiment of the present invention. Optionally, refer to... Figure 6 The second side of the first switching unit includes a first output terminal A3, a second output terminal B3, a third output terminal C3 and a fourth output terminal N3, and the initial voltage includes a three-phase voltage; the third power output unit 140 includes a third button AQ3, a third relay, a third voltage regulator TY3 and a current switch 141;

[0147] The first end of the third button AQ3 is connected to any one of the first output terminal A3, the second output terminal B3, and the third output terminal C3. The second end of the third button AQ3 is connected to the first end of the third coil KM31 in the third relay. The second end of the third coil KM31 is connected to the fourth output terminal N3. The first end of the fifth switch KM32 in the third relay is connected to the first end of the third button AQ3. The second end of the fifth switch KM32 is connected to the first end of the third coil KM31.

[0148] In the third relay, the first terminal of the sixth switch KM33 is connected to the first output terminal A3; the second terminal of the sixth switch KM33 is connected to the second output terminal B3; the third terminal of the sixth switch KM33 is connected to the third output terminal C3; the fourth terminal of the sixth switch KM33 is connected to the first terminal of the third voltage regulator TY3; the fifth terminal of the sixth switch KM33 is connected to the second terminal of the third voltage regulator TY3; the sixth terminal of the sixth switch KM33 is connected to the third terminal of the third voltage regulator TY3; the fourth terminal of the third voltage regulator TY3 is connected to the fourth output terminal N3; the fifth terminal of the third voltage regulator TY3 is connected to the first terminal of the current switch 141; and the sixth terminal of the third voltage regulator TY3... The third voltage regulator TY3 is connected to the second terminal of the current switch 141, the seventh terminal of the third voltage regulator TY3 is connected to the third terminal of the current switch 141, the fourth terminal of the current switch 141 is connected to the fourth output terminal N3, and the fifth, sixth, seventh, and eighth terminals of the current switch 141 are connected to the device under test 2. The third relay is configured to energize the third coil KM31 and close the fifth switch KM32 and the sixth switch KM33 when the third button AQ3 is pressed. The third voltage regulator TY3 is configured to convert the three-phase voltage into a current output of at least one current value when the sixth switch KM33 is closed.

[0149] Among them, the current switch 141 can be a multi-pole multi-throw switch, and the sixth switch KM33 can be a multi-pole multi-throw switch.

[0150] Specifically, after pressing the third button AQ3, the third coil KM31 of the third relay is energized, causing the fifth switch KM32 of the third relay to close. The first end of the fifth switch KM32 is connected to the first end of the third button AQ3, and the second end of the fifth switch KM32 is connected to the first end of the third coil KM31, thus forming a self-locking mechanism to ensure that the third coil KM31 is energized. When the third coil KM31 is energized, the sixth switch KM33 of the third relay closes. After closing the current switch 141, the third voltage regulator TY3 is energized. The third voltage regulator TY3 converts the three-phase voltage of the initial voltage, adjusts the output voltage, and thus adjusts the output current value. By adjusting the third voltage regulator TY3 (for example, adjusting the number of coil turns connected to the circuit of the third voltage regulator TY3), the voltage value of the output voltage of the third voltage regulator TY3 can be adjusted, thereby adjusting the output current value, realizing the output of at least one current value, such as a current value between 0-5A, which facilitates the testing of multiple circuits of the device under test 2, thereby improving the testing efficiency. It should be noted that the current switch 141 can be connected to the interface of the device under test 2 via a pluggable interface. After adjusting the voltage value output by the third voltage regulator TY3, i.e., adjusting the output current value, the interface connected to the device under test 2 can be changed to achieve testing of different circuits. The first detection module 200 can be connected to the fifth, sixth, seventh, and eighth terminals of the current switch 141. When the current switch 141 is closed, the actual current output from the current switch 141 to the device under test 2 can be detected. By comparing the actual current with the current value output by the current switch 141, it can be determined whether the circuit of the device under test 2 connected to the current switch 141 is abnormal. After completing the test of the circuit of the device under test 2 connected to the current switch 141, the current switch 141 can be disconnected.

[0151] Optionally, refer to Figure 6 The third relay may also include a third closing indicator light D9, which is connected in parallel with the third coil KM31, so that when the fifth switch KM32 is closed, the third closing indicator light D9 lights up to indicate the status of the third relay.

[0152] Optionally, refer to Figure 3 The third relay may also include a third normally closed switch KM34 and a third trip indicator light D10, which are connected in series between the first output terminal A3 and the fourth output terminal N3. When the third coil KM31 is not energized, the third normally closed switch KM34 is closed, and the third trip indicator light D10 illuminates, indicating the status of the third relay. When the third coil KM31 is energized, the third normally closed switch KM34 is open, and the third trip indicator light D10 does not illuminate.

[0153] After completing the detection of the first actual voltage, the second actual voltage, and the actual current, all switches in the first power output unit 120, the second power output unit 130, and the third power output unit 140 can be disconnected, and then the detection switch module 400 can be closed to power the second detection module 300, so that the second detection module 300 can detect the parameter information of the device under test 2.

[0154] Figure 7 This is a circuit structure diagram of a second voltage regulating subunit provided in an embodiment of the present invention. Optionally, refer to... Figure 7 The third power output unit 140 also includes a second voltage regulating subunit 142, which includes a fifth voltage regulating button SQ5, a fifth voltage regulating relay, a sixth voltage regulating button SQ6, a sixth voltage regulating relay, and a third voltage regulating motor M3.

[0155] The first end of the fifth voltage regulating button SQ5 is connected to the second power output unit 130, the second end of the fifth voltage regulating button SQ5 is connected to the first end of the fifth voltage regulating coil ZJ81 of the fifth voltage regulating relay, and the second end of the fifth voltage regulating coil ZJ81 is connected to the second power output unit 130.

[0156] The ninth voltage regulating switch ZJ82 of the fifth voltage regulating relay is connected between the first power supply terminal A+ and the fifth power supply terminal of the third voltage regulating motor M3, and the tenth voltage regulating switch ZJ83 of the fifth voltage regulating relay is connected between the second power supply terminal COMA and the sixth power supply terminal of the third voltage regulating motor M3; the fifth voltage regulating relay is configured such that when the fifth voltage regulating button SQ5 is pressed, the ninth voltage regulating switch ZJ82 and the tenth voltage regulating switch ZJ83 are closed, and the third voltage regulating motor M3 is configured to rotate in the first direction when the ninth voltage regulating switch ZJ82 and the tenth voltage regulating switch ZJ83 are closed;

[0157] The first end of the sixth voltage regulating button SQ6 is connected to the second power output unit 130, the second end of the sixth voltage regulating button SQ6 is connected to the first end of the sixth voltage regulating coil ZJ91 of the sixth voltage regulating relay, and the second end of the sixth voltage regulating coil ZJ91 is connected to the second power output unit 130.

[0158] The eleventh voltage regulating switch ZJ92 of the sixth voltage regulating relay is connected between the first power supply terminal A+ and the sixth power supply terminal, and the twelfth voltage regulating switch ZJ93 of the sixth voltage regulating relay is connected between the second power supply terminal COMA and the fifth power supply terminal; the sixth voltage regulating relay is configured such that when the sixth voltage regulating button SQ6 is pressed, the eleventh voltage regulating switch ZJ92 and the twelfth voltage regulating switch ZJ93 are closed, and the third voltage regulating motor M3 is configured to rotate in the second direction when the eleventh voltage regulating switch ZJ92 and the twelfth voltage regulating switch ZJ93 are closed.

[0159] The fifth power supply terminal of the third voltage regulating motor M3 is a positive power supply terminal, and the sixth power supply terminal is a negative power supply terminal, or the fifth power supply terminal is a negative power supply terminal and the sixth power supply terminal is a positive power supply terminal; no limitation is made here.

[0160] The principle by which the third voltage regulating motor M3 adjusts the third voltage regulator TY3 is the same as the principle by which the first voltage regulating motor M1 adjusts the first voltage regulator TY1, and will not be repeated here.

[0161] Optionally, refer to Figure 6 The power module 100 also includes a power switch 170. The first terminal A0, the second terminal B0, the third terminal C0, and the fourth terminal N0 of the power switch 170 are connected to an external power source. The fifth terminal A1, the sixth terminal B1, the seventh terminal C1, and the eighth terminal N1 of the power switch 170 are connected to the energy storage unit 110. Thus, when it is necessary to charge the energy storage unit 110, the power switch 170 can be closed, allowing the external power source to charge the energy storage unit 110 through the power switch 170.

[0162] Figure 8 This is a circuit structure diagram of a first detection module provided in an embodiment of the present invention. Optionally, refer to... Figure 8 The detection device also includes a processor, and the first detection module 200 includes: at least one first voltmeter 210, at least one second voltmeter 220 and at least one ammeter 230;

[0163] The first voltmeter 210 is connected to the first power output unit 120 and the processor respectively. The first voltmeter 210 is configured to detect the first actual voltage output by the first power output unit 120 and transmit it to the processor.

[0164] The second voltmeter 220 is connected to the second power output unit 130 and the processor respectively. The second voltmeter 220 is configured to detect the actual voltage output by the second power output unit 130 and transmit it to the processor.

[0165] The ammeter 230 is connected to the third power output unit 140 and the processor respectively. The ammeter 230 is configured to detect the actual current output by the third power output unit 140 and transmit the actual current to the processor.

[0166] The processor can be a microcontroller, a field-programmable gate array (FPGA), or a programmable logic controller (PLC), etc., and is not limited thereto. The first voltmeter 210, the second voltmeter 220, and the ammeter 230 can be communicatively connected to the processor, for example, using RS485 communication.

[0167] The first power supply terminal of the first voltmeter 210 can be connected to any one of the first output terminal A3, the second output terminal B3, or the third output terminal C3. The second power supply terminal of the first voltmeter 210 can be connected to the fourth output terminal N3 to power the first voltmeter 210. The detection terminal of the first voltmeter 210 is connected to the first power output unit 120. Similarly, the first power supply terminal of the second voltmeter 220 can be connected to any one of the first output terminal A3, the second output terminal B3, or the third output terminal C3. The second power supply terminal of the second voltmeter 220 can be connected to the fourth output terminal N3 to power the second voltmeter 220. The detection terminal of the second voltmeter 220 is connected to the second power output unit 130. Likewise, the first power supply terminal of the ammeter 230 can be connected to any one of the first output terminal A3, the second output terminal B3, or the third output terminal C3. The second power supply terminal of the ammeter 230 can be connected to the fourth output terminal N3 to power the ammeter 230. The detection terminal of the ammeter 230 is connected to the third power output unit 140.

[0168] Specifically, by setting the first voltmeter 210, the first actual voltage output by the first power output unit 120 can be detected and transmitted to the processor. The processor can compare the first actual voltage with the AC voltage of the first power output unit 120. When the deviation between the first actual voltage and the AC voltage of the first power output unit 120 is large, a prompt message is issued, thereby determining whether the circuit of the device under test 2 is abnormal. Furthermore, an overvoltage warning can be issued when the voltage is too high, thus timely cutting off the output of the first power output unit 120 to achieve overvoltage protection and realize intelligent protection. For example, as shown... Figure 8As shown, one of the first voltmeters 210(1) is connected to the third terminal E3 and the fourth terminal E4 of the third switch subunit 124 in the first power output unit 120. This allows the first actual voltage output by the first voltage regulator TY1 through the third switch subunit 124 to be detected when the third switch subunit 124 is closed. The first actual voltage is then compared with the second AC voltage of the first voltage regulator TY1 to determine whether the circuit of the device under test 2 is abnormal. The other first voltmeter 210(2) is connected to the fifth terminal E5, the sixth terminal E6, the seventh terminal E7, and the eighth terminal E8 of the sixth switch subunit 128 in the first power output unit 120. This allows the first actual voltage output by the sixth switch subunit 128 to be detected when the sixth switch subunit 128 is closed. The first actual voltage is then compared with the fourth AC voltage (target voltage) to determine whether the circuit of the device under test 2 is abnormal. The first voltmeter 210 can also be used to measure current, and this is not a limitation. Other first voltmeters 210 can also be used to detect the first actual voltage corresponding to AC voltage values ​​of other voltage values, and this is not a limitation.

[0169] Similarly, by setting the second voltmeter 220, the second actual voltage output by the second power output unit 130 can be detected. The processor compares the second actual voltage with the DC voltage of the second power output unit 130 to determine whether the circuit of the device under test 2 is abnormal and can provide an overvoltage warning. For example, as shown... Figure 8 As shown, one of the second voltmeters 220(1) is connected to the fifth output terminal E9 and the sixth output terminal E10 of the rectifier circuit KB, thereby detecting the second actual voltage output by the rectifier circuit KB. By comparing the second actual voltage with the fourth DC voltage (target voltage), it can be determined whether the circuit of the device under test 2 connected to the rectifier circuit KB is abnormal. The first terminal E11 and the second terminal E12 of the knob K1 are connected to the device under test 2. Another second voltmeter 220(2) is connected to the first terminal E11 and the second terminal E12 of the knob K1, thereby detecting the first actual voltage output by the knob K1. By comparing the second actual voltage with the third DC voltage (target voltage), it can be determined whether the circuit of the device under test 2 connected to the knob K1 is abnormal. Other second voltmeters 220 can also be used to detect the second actual voltage corresponding to other DC voltage values, which is not limited here.

[0170] Similarly, by setting ammeter 230, the actual current output by the third power output unit 140 can be detected. The processor compares the actual current with the current output by the third power output unit 140 to determine whether the circuit of the device under test 2 is abnormal, and can provide overcurrent and short-circuit warnings. Alternatively, the third power output unit 140 can be connected to the current transformer in the device under test 2, and the actual current detected by ammeter 230 can be compared with the current value detected by the current transformer to detect whether the current transformer in the device under test 2 is abnormal.

[0171] For example, such as Figure 8 As shown, one ammeter 230(1) is connected to the fifth terminal F1, the sixth terminal F2, and the seventh terminal F3 of the current switch 141 to detect the actual current output by the current switch 141. By comparing the actual current with the target current corresponding to the current switch 141, it can be determined whether the circuit of the device under test 2 connected to the current switch 141 is abnormal. Another ammeter 230(2) is connected to the first terminal E11 and the second terminal E12 of the knob K1 to detect the actual current output by the knob K1. By comparing the actual current with the target current corresponding to the knob K1, it can be determined whether the circuit of the device under test 2 connected to the knob K1 is abnormal. Other ammeters 230 can also be used to detect the actual current corresponding to other current values, which is not limited here.

[0172] Optionally, refer to Figure 8 The first detection module 200 also includes a third voltmeter 240, which is connected to the fifth terminal A1, sixth terminal B1, seventh terminal C1, and eighth terminal N1 of the power supply switch 170. The first power supply terminal of the third voltmeter 240 can be connected to any one of the first output terminal A3, second output terminal B3, or third output terminal C3, and the second power supply terminal of the third voltmeter 240 can be connected to the fourth output terminal N3. Thus, the third voltmeter 240 can detect the input voltage during charging of the energy storage unit 110. The third voltmeter 240 can also be connected to a processor to transmit the detected input voltage during charging of the energy storage unit 110 to the processor. Optionally, the detection device may also include a display screen, with the processor connected to the display screen, so that the display screen can display the input voltage during charging of the energy storage unit 110, the first actual voltage of the first power output unit 120, the second actual voltage of the second power output unit 130, and the actual current of the third power output unit 140.

[0173] Optionally, refer to Figure 2The testing device also includes a printer 500, which is connected to the second testing module 300. The printer 500 is configured to print the parameter information of the device under test (DUT) 2. This allows the parameter information detected by the second testing module 300 to be printed. The printer 500 can be a thermal printer, etc. The printer 500 may have wireless transmission capabilities, enabling data transmission to a host computer, etc., facilitating data integration. After the second testing module detects the parameter information of the DUT, but before the printer prints the parameter information, all parameter information can be integrated. For example, the processor in the testing device can connect to the second testing module 300 to acquire all parameter information, thereby integrating and storing all parameter information.

[0174] Optionally, refer to Figure 6 The first switching unit 160 also includes a trip coil 162 and an emergency stop button 163. The first end of the emergency stop button 163 is connected to any one of the first output terminal A3, the second output terminal B3, and the third output terminal C3. The second end of the emergency stop button 163 is connected to the first end of the trip coil 162, and the second end of the trip coil 162 is connected to the fourth output terminal N3. Thus, when an excessive first actual voltage, second actual voltage, or actual current is detected, or after the testing of the device under test 2 is completed, the emergency stop button 163 can be closed, energizing the trip coil 162, opening the power switch 161, and preventing the inverter 150 from outputting voltage.

[0175] Figure 9 This is a circuit structure diagram of a zero-position indicator module provided in an embodiment of the present invention. Optionally, refer to... Figure 9 , Figure 3 and Figure 6 The detection device may also include a zero-position indicator module 600, which includes a first limit switch S1, a fourth relay, a first zero-position indicator D11, a second limit switch S2, a fifth relay, a second zero-position indicator D12, a third limit switch S3, a sixth relay, and a third zero-position indicator D13. The first limit switch S1 is connected between the first output terminal A3 and the first terminal of the first zero-position coil ZJ11 of the fourth relay. The second terminal of the first zero-position coil ZJ11 is connected to the fourth output terminal N3. The first zero-position indicator D11 is connected in parallel with the first zero-position coil ZJ11. The first zero-position switch ZJ12 of the fourth relay is connected between the first output terminal A3 and the first terminal of the first button AQ1.

[0176] The second limit switch S2 is connected between the first output terminal A3 and the first terminal of the second zero position coil ZJ12 of the fifth relay. The second terminal of the second zero position coil ZJ12 is connected to the fourth output terminal N3. The second zero position indicator D12 is connected in parallel with the second zero position coil ZJ12. The second zero position switch ZJ22 of the fifth relay is connected between the first output terminal A3 and the first terminal of the second button AQ2.

[0177] The third limit switch S3 is connected between the first output terminal A3 and the first terminal of the third zero-position coil ZJ13 of the sixth relay. The second terminal of the third zero-position coil ZJ13 is connected to the fourth output terminal N3. The third zero-position indicator D13 is connected in parallel with the third zero-position coil ZJ13. The third zero-position switch ZJ32 of the sixth relay is connected between the first output terminal A3 and the first terminal of the third button AQ3.

[0178] Among them, the first zero-position switch ZJ12, the second zero-position switch ZJ22 and the third zero-position switch ZJ32 are normally closed switches.

[0179] Specifically, the first limit switch S1 is set at the lowest point where the main shaft of the first voltage regulator TY1 can descend. When the first voltage regulating motor M1 rotates, causing the main shaft of the first voltage regulator TY1 to descend to the lowest point, i.e., when the first voltage regulator TY1 has no coil connected to the circuit, the first limit switch S1 closes, the first zero-position coil ZJ11 is energized, the first zero-position switch ZJ12 opens, the first coil KM11 of the first voltage regulating relay is no longer energized, and the voltage regulation of the first voltage regulator TY1 is no longer performed, the output voltage is zero, and at the same time, the first zero-position indicator light D11 illuminates, indicating the zero-position voltage. Similarly, the second limit switch S2 and the third limit switch S3 have the same working principle and function as the first limit switch S1, the second zero-position switch ZJ22 and the third zero-position switch ZJ32 have the same working principle and function as the first zero-position switch ZJ12, and the second zero-position indicator light D12 and the third zero-position indicator light D13 have the same working principle and function as the first zero-position indicator light D11, which will not be described again here.

[0180] Optionally, the detection device may also include other indicator lights, such as output indicator lights for each AC voltage, output indicator lights for each DC voltage, and output indicator lights for current, which can indicate the power output status of the detection device.

[0181] This utility model embodiment also provides a detection device. Figure 10 This is a schematic diagram of the structure of a testing device provided in an embodiment of this utility model, for reference. Figure 10The testing device 1 includes the testing apparatus provided in any embodiment of this utility model. Therefore, the testing device 1 has the same beneficial effects as the testing apparatus provided in any embodiment of this utility model, and will not be described in detail here. The operating table of the testing device 1 can be equipped with a grounding resistance tester 310, a loop resistance tester 320, and a withstand voltage tester 330. The testing device 1 is internally equipped with an energy storage unit 110. The testing device 1 is also equipped with a first operating area L1, a second operating area L2, and a third operating area L3. The first operating area L1 can be equipped with a display screen in the testing apparatus, which can display the first actual voltage, the second actual voltage, and the actual current, etc. The display screen can be a touch screen for easy operation. The second operating area L2 can be equipped with a current switch 141, a first DC switch Q1, and a second DC switch Q2, etc. The third operating area L3 can be equipped with an emergency stop button 163, etc. The specific devices in each operating area can be set according to the usage requirements, and are not limited here.

[0182] It should be understood that the various forms of the process shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this utility model can be achieved, and this is not limited herein.

[0183] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A detection device, characterized in that, include: A power module includes an energy storage unit, a first power output unit, a second power output unit, and a third power output unit. The first power output unit, the second power output unit, and the third power output unit are all connected between the energy storage unit and the device under test (DUT). The first power output unit is configured to output an AC voltage of at least one voltage value to the DUT based on an initial voltage output by the energy storage unit. The second power output unit is configured to output a DC voltage of at least one voltage value to the DUT based on the initial voltage. The third power output unit is configured to output a current of at least one current value to the DUT based on the initial voltage. A first detection module is connected to the first power output unit, the second power output unit and the third power output unit. The first detection module is configured to detect the first actual voltage output by the first power output unit, the second actual voltage output by the second power output unit and the actual current output by the third power output unit. A second detection module and a detection switch module are provided. The detection switch module is connected between the energy storage unit and the second detection module. The second detection module is configured to detect the parameter information of the device under test when the detection switch module is closed. The parameter information includes at least grounding resistance, loop resistance and leakage current.

2. The detection device according to claim 1, characterized in that, The second detection module includes at least a grounding resistance tester, a loop resistance tester, and a withstand voltage tester; The first end of the detection switch module is connected to the energy storage unit; The grounding resistance tester, the loop resistance tester, and the withstand voltage tester are respectively connected to the second terminal of the detection switch module; the grounding resistance tester is configured to detect the grounding resistance of the device under test, the loop resistance tester is configured to detect the loop resistance of the device under test, and the withstand voltage tester is configured to detect the leakage current of the device under test.

3. The detection device according to claim 1, characterized in that, The power module also includes an inverter and a first switching unit; The first side of the inverter is connected to the energy storage unit, and the second side of the inverter is connected to the first side of the first switching unit. The second side of the first switching unit is connected to the first power output unit, the second power output unit, the third power output unit, and the detection switch module, respectively. The inverter is configured to convert the output voltage of the energy storage unit into the initial voltage, which includes at least one phase voltage.

4. The detection device according to claim 3, characterized in that, The second side of the first switching unit includes a first output terminal, a second output terminal, a third output terminal, and a fourth output terminal, and the initial voltage includes a three-phase voltage; The first power output unit includes a first switching subunit. A first terminal of the first switching subunit is connected to any one of the first output terminal, the second output terminal, and the third output terminal. A second terminal of the first switching subunit is connected to the fourth output terminal. The third and fourth terminals of the first switching subunit are connected to the device under test. The first switching subunit is configured to transmit any phase voltage of the initial voltage output by the inverter to the device under test when the first switching subunit is closed. The first power output unit further includes a second switching subunit and a first voltage conversion subunit. The first terminal of the second switching subunit is connected to any one of the first output terminal, the second output terminal, and the third output terminal. The second terminal of the second switching subunit is connected to the fourth output terminal. The third and fourth terminals of the second switching subunit are connected to the first voltage conversion subunit. The first voltage conversion subunit is connected to the device under test. The first voltage conversion subunit is configured to convert any phase voltage of the initial voltage into a first AC voltage output when the second switching subunit is closed. The first power output unit further includes a first button, a first relay, a first voltage regulator, and a third switch subunit; The first end of the first button is connected to any one of the first output terminal, the second output terminal, and the third output terminal; the second end of the first button is connected to the first end of the first coil in the first relay; the second end of the first coil is connected to the fourth output terminal; the first end of the first switch in the first relay is connected to the first end of the first button; and the second end of the first switch is connected to the first end of the first coil. In the first relay, the first terminal of the second switch is connected to any one of the first output terminal, the second output terminal, and the third output terminal; the second terminal of the second switch is connected to the first terminal of the first voltage regulator; the third terminal of the second switch is connected to the fourth output terminal; the fourth terminal of the second switch is connected to the second terminal of the first voltage regulator; the third terminal of the first voltage regulator is connected to the first terminal of the third switch subunit; the second terminal of the first voltage regulator is connected to the second terminal of the third switch subunit; the third terminal and the fourth terminal of the third switch subunit are connected to the device under test; the first relay is configured such that when the first coil is energized, the first switch and the second switch are closed; the first voltage regulator is configured such that when the second switch is closed, it converts any phase voltage of the initial voltage output by the inverter into a second AC voltage output of at least one current value. The first power output unit further includes a fourth switch subunit. The first terminal of the fourth switch subunit is connected to the first output terminal, the second terminal of the fourth switch subunit is connected to the second output terminal, the third terminal of the fourth switch subunit is connected to the third output terminal, the fourth terminal of the fourth switch subunit is connected to the fourth output terminal, and the fifth, sixth, seventh, and eighth terminals of the fourth switch subunit are connected to the device under test. The fourth switch subunit is configured to transmit the three-phase voltage of the initial voltage to the device under test when the fourth switch subunit is closed. The first power output unit further includes a fifth switching subunit and a second voltage conversion subunit. The first terminal of the fifth switching subunit is connected to the first output terminal, the second terminal of the fifth switching subunit is connected to the second output terminal, the third terminal of the fifth switching subunit is connected to the third output terminal, the fourth terminal of the fifth switching subunit is connected to the fourth output terminal, and the fifth, sixth, seventh, and eighth terminals of the fifth switching subunit are connected to the second voltage conversion subunit. The second voltage conversion subunit is connected to the device under test. The second voltage conversion subunit is configured to convert the three-phase voltage of the initial voltage into a third AC voltage output when the fifth switching subunit is closed. The first power output unit also includes a second button, a second relay, a second voltage regulator, and a sixth switch subunit; The first end of the second button is connected to any one of the first output terminal, the second output terminal, and the third output terminal; the second end of the second button is connected to the first end of the second coil in the second relay; the second end of the second coil is connected to the fourth output terminal; the first end of the third switch in the second relay is connected to the first end of the second button; and the second end of the third switch is connected to the first end of the second coil. In the second relay, the first terminal of the fourth switch is connected to the first output terminal, the second terminal of the fourth switch is connected to the second output terminal, the third terminal of the fourth switch is connected to the third output terminal, the fourth terminal of the fourth switch is connected to the first terminal of the second voltage regulator, the fifth terminal of the fourth switch is connected to the second terminal of the second voltage regulator, the sixth terminal of the fourth switch is connected to the third terminal of the second voltage regulator, the fourth terminal of the second voltage regulator is connected to the fourth output terminal, the fifth terminal of the second voltage regulator is connected to the first terminal of the sixth switch subunit, and the sixth terminal of the second voltage regulator is connected to the second terminal of the sixth switch subunit. The seventh terminal of the voltage regulator is connected to the third terminal of the sixth switch subunit, the fourth terminal of the sixth switch subunit is connected to the fourth output terminal, and the fifth, sixth, seventh, and eighth terminals of the sixth switch subunit are connected to the device under test. The second relay is configured such that when the second button is pressed, the second coil is energized, and the third and fourth switches are closed. The second voltage regulator is configured such that when the fourth switch is closed, it converts the three-phase voltage of the initial voltage into a fourth AC voltage output of at least one voltage value.

5. The detection device according to claim 4, characterized in that, The first power output unit further includes a first voltage regulating subunit, which includes a first voltage regulating button, a first voltage regulating relay, a second voltage regulating button, a second voltage regulating relay, and a first voltage regulating motor. The first end of the first voltage regulating button is connected to the second power output unit, the second end of the first voltage regulating button is connected to the first end of the first voltage regulating coil of the first voltage regulating relay, and the second end of the first voltage regulating coil is connected to the second power output unit; The first voltage regulating switch of the first voltage regulating relay is connected between the first power supply terminal and the first power supply terminal of the first voltage regulating motor, and the second voltage regulating switch of the first voltage regulating relay is connected between the second power supply terminal and the second power supply terminal of the first voltage regulating motor; the first voltage regulating relay is configured to close the first voltage regulating switch and the second voltage regulating switch when the first voltage regulating button is pressed, and the first voltage regulating motor is configured to rotate in a first direction when the first voltage regulating switch and the second voltage regulating switch are closed; The first end of the second voltage regulating button is connected to the second power output unit, the second end of the second voltage regulating button is connected to the first end of the second voltage regulating coil of the second voltage regulating relay, and the second end of the second voltage regulating coil is connected to the second power output unit; The third voltage regulating switch of the second voltage regulating relay is connected between the first power supply terminal and the second power supply terminal, and the fourth voltage regulating switch of the second voltage regulating relay is connected between the second power supply terminal and the first power supply terminal; the second voltage regulating relay is configured such that when the second voltage regulating button is pressed, the third voltage regulating switch and the fourth voltage regulating switch are closed, and the first voltage regulating motor is configured to rotate in a second direction when the third voltage regulating switch and the fourth voltage regulating switch are closed; wherein, the first direction is clockwise and the second direction is counterclockwise, or, the first direction is counterclockwise and the second direction is clockwise; The first voltage regulating subunit also includes a third voltage regulating button, a third voltage regulating relay, a fourth voltage regulating button, a fourth voltage regulating relay, and a second voltage regulating motor; The first end of the third voltage regulating button is connected to the second power output unit, the second end of the third voltage regulating button is connected to the first end of the third voltage regulating coil of the third voltage regulating relay, and the second end of the third voltage regulating coil is connected to the second power output unit. The fifth voltage regulating switch of the third voltage regulating relay is connected between the first power supply terminal and the third power supply terminal of the second voltage regulating motor, and the sixth voltage regulating switch of the third voltage regulating relay is connected between the second power supply terminal and the fourth power supply terminal of the second voltage regulating motor; the third voltage regulating relay is configured such that when the third voltage regulating button is pressed, the fifth voltage regulating switch and the sixth voltage regulating switch are closed, and the second voltage regulating motor is configured to rotate in the first direction when the fifth voltage regulating switch and the sixth voltage regulating switch are closed; The first end of the fourth voltage regulating button is connected to the second power output unit, the second end of the fourth voltage regulating button is connected to the first end of the fourth voltage regulating coil of the fourth voltage regulating relay, and the second end of the fourth voltage regulating coil is connected to the second power output unit. The seventh voltage regulating switch of the fourth voltage regulating relay is connected between the first power supply terminal and the fourth power supply terminal, and the eighth voltage regulating switch of the fourth voltage regulating relay is connected between the second power supply terminal and the third power supply terminal; the fourth voltage regulating relay is configured such that when the fourth voltage regulating button is pressed, the seventh voltage regulating switch and the eighth voltage regulating switch are closed, and the second voltage regulating motor is configured to rotate in a second direction when the seventh voltage regulating switch and the eighth voltage regulating switch are closed; wherein, the first direction is clockwise and the second direction is counterclockwise, or, the first direction is counterclockwise and the second direction is clockwise.

6. The detection device according to claim 4, characterized in that, The second power output unit includes at least one first DC subunit, at least one second DC subunit, at least one third DC subunit, and at least one fourth DC subunit; The first DC subunit includes a first DC switch and a first voltage conversion circuit. A first terminal of the first DC switch is connected to any one of the first output terminal, the second output terminal, and the third output terminal. A second terminal of the first DC switch is connected to the fourth output terminal. The third and fourth terminals of the first DC switch are connected to the first voltage conversion circuit, which is connected to the device under test. The first voltage conversion circuit is configured to convert any phase voltage of the initial voltage into a first DC voltage output when the first DC switch is closed. The first DC voltage output by different first DC subunits has different values. The second DC subunit includes a second voltage conversion circuit, a first terminal of which is connected to any one of the first output terminal, the second output terminal, and the third output terminal, and a second terminal of which is connected to the fourth output terminal. The second voltage conversion circuit is configured to convert any phase voltage of the initial voltage into a second DC voltage output. The third DC subunit includes a second DC switch, a third voltage conversion circuit, and a knob; The first terminal of the second DC switch is connected to any one of the first output terminal, the second output terminal, and the third output terminal; the second terminal of the second DC switch is connected to the fourth output terminal; and the third and fourth terminals of the second DC switch are connected to the third voltage conversion circuit. The third voltage conversion circuit is configured to convert any phase voltage of the initial voltage into a third DC voltage. The knob is connected between the third voltage conversion circuit and the device under test, and the knob is used to adjust the voltage value of the third DC voltage; The fourth DC subunit includes a third DC switch and a rectifier circuit; The first terminal of the third DC switch is connected to the third terminal of the first voltage regulator, the second terminal of the third DC switch is connected to the second terminal of the first voltage regulator, and the third and fourth terminals of the third DC switch are connected to the rectifier circuit. The rectifier circuit is connected to the device under test, and the rectifier circuit is configured to convert the second AC voltage output by the first voltage regulator into a fourth DC voltage of at least one voltage value when the third DC switch is closed based on the corresponding second enable signal.

7. The detection device according to claim 3, characterized in that, The second side of the first switching unit includes a first output terminal, a second output terminal, a third output terminal, and a fourth output terminal, and the initial voltage includes a three-phase voltage; The third power output unit includes a third button, a third relay, a third voltage regulator, and a current switch; The first end of the third button is connected to any one of the first output terminal, the second output terminal, and the third output terminal; the second end of the third button is connected to the first end of the third coil in the third relay; the second end of the third coil is connected to the fourth output terminal; the first end of the fifth switch in the third relay is connected to the first end of the third button; and the second end of the fifth switch is connected to the first end of the third coil. In the third relay, the first terminal of the sixth switch is connected to the first output terminal, the second terminal of the sixth switch is connected to the second output terminal, the third terminal of the sixth switch is connected to the third output terminal, the fourth terminal of the sixth switch is connected to the first terminal of the third voltage regulator, the fifth terminal of the sixth switch is connected to the second terminal of the third voltage regulator, the sixth terminal of the sixth switch is connected to the third terminal of the third voltage regulator, the fourth terminal of the third voltage regulator is connected to the fourth output terminal, the fifth terminal of the third voltage regulator is connected to the first terminal of the current switch, the sixth terminal of the third voltage regulator is connected to the second terminal of the current switch, the seventh terminal of the third voltage regulator is connected to the third terminal of the current switch, the fourth terminal of the current switch is connected to the fourth output terminal, and the fifth, sixth, seventh, and eighth terminals of the current switch are connected to the device under test. The third relay is configured such that when the third button is pressed, the third coil is energized, and the fifth and sixth switches are closed. The third voltage regulator is configured such that when the sixth switch is closed, it converts the three-phase voltage into a current output of at least one current value.

8. The detection device according to claim 1, characterized in that, The detection device further includes a processor, and the first detection module includes: at least one first voltmeter, at least one second voltmeter, and at least one ammeter; The first voltmeter is connected to the first power output unit and the processor respectively. The first voltmeter is configured to detect the first actual voltage output by the first power output unit and transmit it to the processor. The second voltmeter is connected to the second power output unit and the processor respectively. The second voltmeter is configured to detect the second actual voltage output by the second power output unit and transmit it to the processor. The ammeter is connected to the third power output unit and the processor respectively. The ammeter is configured to detect the actual current output by the third power output unit and transmit the actual current to the processor.

9. The detection device according to claim 1, characterized in that, The detection device also includes a printer; The printer is connected to the second detection module and is configured to print parameter information of the device under test.

10. A testing device, characterized in that, include: The detection device according to any one of claims 1-9.

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