Detection device and electronic equipment

Abstract

The embodiment of the invention provides a detection device and electronic equipment, which are applied to a three-phase motor and comprise an excitation device, a power supply device and a control device, the excitation device comprises a plurality of winding assemblies; the power supply device is connected with the excitation device and is used for supplying power to the winding assembly, so that the winding assembly generates a rotating magnetic field; the excitation device is used for generating induced voltage on a stator winding of the three-phase motor through the rotating magnetic field; and the control device is used for sampling the induced voltage of the stator winding of the three-phase motor and detecting the wiring state of the stator winding of the three-phase motor according to the induced voltage. According to the detection device provided by the invention, a complex mechanical structure is not needed, and a rotating magnetic field can be generated through an electromagnetic induction principle, so that the to-be-detected stator generates induced voltage. And the control device analyzes the induced voltage, so that the wiring state of the to-be-detected stator can be quickly detected.

Description

Technical Field

[0001] The present disclosure relates to the field of motor production and manufacturing, and in particular to a detection device and an electronic device. Background Art

[0002] In the field of three-phase motor manufacturing, the traditional stator winding wiring process relies on manual operation, which has the risk of phase sequence misconnection or winding error. If such errors are not detected in the early stage, they need to be fully disassembled and repaired after the subsequent assembly is completed, resulting in significant cost losses. On the one hand, the existing conventional parameter detection method for static parameters such as winding resistance and inductance cannot effectively identify winding wiring problems by only measuring conventional parameters such as resistance and inductance; on the other hand, the detection scheme based on back electromotive force requires the installation of a permanent magnet rotor and a power drive device inside the stator to be measured, and the magnetic field cuts the stator winding to generate an induced voltage through mechanical rotation, and then relies on manual oscilloscope analysis. This method not only requires additional mechanical structure and energy consumption, increases equipment complexity and production cost, but also requires manual judgment, which is inefficient and difficult to meet the continuous detection requirements of automated production lines. In summary, it is urgent to develop an efficient and mechanical motion-free automated detection method to achieve rapid determination of the quality of stator winding wiring to adapt to the modern intelligent manufacturing system. Summary of the invention

[0003] The embodiments of the present disclosure provide a detection device and an electronic device to solve the shortcomings of existing winding detection devices, such as complex structure, low efficiency, and the need for manual judgment.

[0004] Based on the above problems, in a first aspect, an embodiment of the present disclosure provides a detection device, which is applied to a three-phase motor, comprising: an excitation device, a power supply device and a control device; the excitation device comprises a plurality of winding components; The power supply device is connected to the excitation device and is used to supply power to the winding assembly so that the winding assembly generates a rotating magnetic field; The excitation device is used to generate an induced voltage on the stator winding of the three-phase motor through the rotating magnetic field; The control device is used to sample the induced voltage of the stator winding of the three-phase motor and detect the connection state of the stator winding of the three-phase motor according to the induced voltage.

[0005] In combination with the first aspect, in a possible implementation manner, the excitation device further includes: an iron core; The iron core is composed of a plurality of magnetically conductive laminated bodies stacked together to concentrate the magnetic field generated by the winding assembly; the winding assembly is evenly arranged on the outer edge of the iron core; and the number of pole pairs of the winding assembly is determined according to the stator winding of the three-phase motor.

[0006] In combination with the first aspect, in a possible implementation manner, the excitation device further includes: a positioning device; The positioning device is used to position the central axis of the excitation device at a coaxial position with the central axis of the stator of the three-phase motor, and includes: a support shaft and / or an insulating ring; The central part of the iron core adopts a hollow structure, and the support shaft is arranged in the hollow structure; the insulating ring is arranged outside the iron core; A plurality of slot-shaped structures are arranged circumferentially on the outer edge of the iron core, and the winding components are embedded in the slot-shaped structures.

[0007] In combination with the first aspect, in a possible implementation manner, the control device includes: a sampling module and a main control module; The sampling module is connected to the stator winding of the three-phase motor, and is used to sample the induced voltage of the stator winding of the three-phase motor, and obtain a sampling signal according to the induced voltage; The main control module is connected to the sampling module and is used to determine the amplitude and phase of the sampling signal; according to the amplitude and phase of the sampling signal, a detection result representing the connection state of the stator winding of the three-phase motor is obtained.

[0008] In combination with the first aspect, in a possible implementation manner, the sampling module includes: a first voltage drop circuit, a second voltage drop circuit, a first amplifier circuit, and a second amplifier circuit; The first voltage drop circuit is connected to the first amplifier circuit and is used to divide the voltage of the first stator winding of the three-phase motor relative to the voltage of the third stator winding of the three-phase motor to obtain a first divided voltage signal; The second voltage drop circuit is connected to the second amplifier circuit and is used to divide the voltage of the second stator winding of the three-phase motor relative to the third stator winding of the three-phase motor to obtain a second divided voltage signal; The first amplifier circuit is connected to the main control module, and is used to amplify the first voltage-divided signal to obtain a first sampling signal, and output the first sampling signal to the main control module; The second amplifier circuit is connected to the main control module, and is used for amplifying the second voltage-divided signal to obtain a second sampling signal, and outputting the second sampling signal to the main control module.

[0009] In combination with the first aspect, in a possible implementation manner, the first voltage drop circuit includes: a first resistor, a second resistor, a third resistor, a fourth resistor and a first capacitor; One end of the first resistor is connected to the first stator winding of the three-phase motor, and the other end of the first resistor is connected to one end of the second resistor; the other end of the second resistor is connected to one end of the third resistor; the other end of the third resistor is respectively connected to one end of the fourth resistor, one end of the first capacitor and the first amplifier circuit; the other end of the fourth resistor is grounded and respectively connected to the third stator winding of the three-phase motor and the other end of the first capacitor; The first voltage drop circuit determines a voltage division ratio of the first voltage drop circuit by a ratio of resistance values ​​of the first resistor, the second resistor, the third resistor and the fourth resistor; the first capacitor is used to filter out interference in the first voltage division signal; The second voltage drop circuit includes: a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor and a second capacitor; One end of the fifth resistor is connected to the second stator winding of the three-phase motor, and the other end of the fifth resistor is connected to one end of the sixth resistor; the other end of the sixth resistor is connected to one end of the seventh resistor; the other end of the seventh resistor is respectively connected to one end of the eighth resistor, one end of the second capacitor and the second amplifier circuit; the other end of the eighth resistor is grounded and respectively connected to the third stator winding of the three-phase motor and the other end of the second capacitor; The second voltage drop circuit determines a voltage division ratio of the second voltage drop circuit according to a ratio of resistance values ​​of the fifth resistor, the sixth resistor, the seventh resistor and the eighth resistor; and the second capacitor is used to filter out interference in the second voltage division signal.

[0010] In combination with the first aspect, in a possible implementation manner, the first amplifying circuit includes: a first amplifier, a ninth resistor, a tenth resistor, and a third capacitor; The positive input end of the first amplifier is connected to the first voltage drop circuit; the reverse input end of the first amplifier is grounded via a ninth resistor, and connected to the output end of the first amplifier via a tenth resistor; the two ends of the third capacitor are respectively connected to the reverse input end of the first amplifier and the output end of the first amplifier; the output end of the first amplifier is connected to the main control module; The first amplifier circuit determines the amplification factor of the first amplifier according to the ratio of the resistance values ​​of the ninth resistor and the tenth resistor; the third capacitor is used to filter out noise in the first sampling signal; The second amplifying circuit comprises: a second amplifier, an eleventh resistor, a twelfth resistor and a fourth capacitor; The positive input end of the second amplifier is connected to the second voltage drop circuit; the reverse input end of the second amplifier is grounded via an eleventh resistor, and is connected to the output end of the second amplifier via a twelfth resistor; the two ends of the fourth capacitor are respectively connected to the reverse input end of the second amplifier and the output end of the second amplifier; the output end of the second amplifier is connected to the main control module; The second amplifier circuit determines the amplification factor of the second amplifier according to the ratio of the resistance values ​​of the eleventh resistor and the twelfth resistor; and the fourth capacitor is used to filter out noise in the second sampling signal.

[0011] In combination with the first aspect, in a possible implementation manner, the main control module includes: a control chip; The control chip is connected to the first amplifying circuit and the second amplifying circuit respectively; The control chip is used to determine the waveform data of the fundamental wave and harmonic wave of the induced voltage of the stator winding of the three-phase motor according to the first sampling signal and the second sampling signal; and determine the connection state of the stator winding of the three-phase motor according to the waveform data by comparing with predetermined calibration data.

[0012] In combination with the first aspect, in a possible implementation manner, the main control module further includes a power supply control circuit; The power supply control circuit is connected to the control chip and the power supply device respectively; and is used to control the on and off of the power supply device according to the control signal sent by the control chip; The power supply control circuit comprises: a thirteenth resistor, a diode and a triode; One end of the thirteenth resistor is connected to the control chip, and the other end is connected to the base of the transistor; the collector of the transistor is connected to the power supply device and the positive electrode of the diode respectively, and the emitter of the transistor is grounded; the cathode of the diode is connected to the control device power supply and the power supply device respectively; The control signal is input into the base of the transistor via the thirteenth resistor to control the on / off state of the transistor, and the on / off state of the power supply device is controlled through the on / off state of the transistor; When the control signal is at a high level, the transistor is turned on and the power supply device is turned on; When the control signal is at a low level, the transistor is turned off and the power supply device is turned off.

[0013] In combination with the first aspect, in a possible implementation manner, the power supply device includes: an electric control device and a transformer; The transformer is connected to the excitation device through the electronic control device, and is used to transform the three-phase alternating current input to the transformer and output it to the excitation device; The electric control device is connected to the control device and is used to control the on-off of the circuit between the transformer and the excitation device according to the control signal of the control device.

[0014] In combination with the first aspect, in a possible implementation manner, the control device is further configured to obtain the calibration data in the following manner: sampling the induced voltages of a plurality of stator windings whose connection states are determined; Acquire waveform data of fundamental wave and harmonic wave of the induced voltage of the stator winding; For each waveform data, the average value and standard deviation of each harmonic amplitude and fundamental phase difference are determined respectively; The average value and the standard deviation are stored in the control chip as calibration data.

[0015] In combination with the first aspect, in a possible implementation manner, the detection device further includes: a display module and a communication module; The display module is connected to the control device and is used to display the wiring status; The communication module is connected to the control device and is used to transmit the wiring status to the host computer.

[0016] A second aspect of an embodiment of the present disclosure provides an electronic device, including: a detection device as described in any one of the first aspects.

[0017] The beneficial effects of the embodiments of the present disclosure include: A detection device and electronic device provided by the embodiments of the present disclosure are applied to three-phase motors, and include: an excitation device, a power supply device and a control device; the excitation device includes a plurality of winding assemblies; the power supply device is connected to the excitation device, and is used to supply power to the winding assemblies so that the winding assemblies generate a rotating magnetic field; the excitation device is used to generate an induced voltage on the stator winding of the three-phase motor through the rotating magnetic field; the control device is used to sample the induced voltage of the stator winding of the three-phase motor, and detect the connection state of the stator winding of the three-phase motor according to the induced voltage. The detection device provided by the present disclosure does not require a complex mechanical structure, and can generate a rotating magnetic field through the principle of electromagnetic induction, so that the stator to be measured generates an induced voltage. The connection state of the stator to be measured can be quickly detected by analyzing the induced voltage by the control device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a detection device provided in an embodiment of the present disclosure; Figure 2A front view and a side view of the excitation device provided in an embodiment of the present disclosure; Figure 3 A schematic diagram of the structure of a control device provided in an embodiment of the present disclosure; Figure 4 A schematic diagram of the structure of a sampling module provided in an embodiment of the present disclosure; Figure 5a A schematic diagram of the structure of a first voltage drop circuit provided in an embodiment of the present disclosure; Figure 5b A schematic diagram of the structure of a second voltage drop circuit provided in an embodiment of the present disclosure; Figure 6a A schematic diagram of the structure of a first amplifying circuit provided in an embodiment of the present disclosure; Figure 6b A schematic diagram of the structure of a second amplifier circuit provided in an embodiment of the present disclosure; Figure 7 A schematic diagram of the structure of a main control module provided in an embodiment of the present disclosure; Figure 8 A schematic diagram of a control chip and external circuit provided in an embodiment of the present disclosure; Fig. 9 A schematic diagram of the structure of a power supply control circuit provided in an embodiment of the present disclosure; Fig.10 A schematic diagram of the structure of a power supply device provided in an embodiment of the present disclosure; Fig.11 A flow chart of a detection method provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0019] The embodiments of the present disclosure provide a detection device and an electronic device. The preferred embodiments of the present disclosure are described below in conjunction with the drawings of the specification. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure. In addition, the embodiments in the present application and the features in the embodiments can be combined with each other if there is no conflict.

[0020] The present disclosure provides a detection device, which is applied to a three-phase motor. Figure 1 As shown, it includes: an excitation device 1, a power supply device 2 and a control device 3; the excitation device 1 includes a plurality of winding components 11; The power supply device 2 is connected to the excitation device 1 and is used to supply power to the winding assembly 11 so that the winding assembly 11 generates a rotating magnetic field; An excitation device 1, for generating an induced voltage on a stator winding of a three-phase motor through a rotating magnetic field; The control device 3 is used to sample the induced voltage of the stator winding of the three-phase motor and detect the connection state of the stator winding of the three-phase motor according to the induced voltage.

[0021] In the disclosed embodiment, the three-phase motor includes a three-phase stator winding, each phase of the stator winding includes at least one coil, and the coils in each phase of the stator winding are connected in series.

[0022] The excitation device 1 can be an electromagnetic induction generating device, and the excitation device 1 includes a plurality of winding components 11, each of which includes at least one coil, and the coils in each winding component 11 are connected in series. Each winding component 11 is respectively connected to one phase of the three-phase alternating current output by the power supply device 2. Each winding component 11 will generate an alternating magnetic field after being energized, and the magnetic fields of all winding components 11 will be vectorially superimposed in space. Due to the 120° phase difference between the currents of the three-phase alternating current, the magnetic field intensity of each winding component 11 will change periodically over time, but the change of each winding component 11 is not synchronized. For uniformly distributed winding components 11, after the magnetic field vectors of each winding component 11 are superimposed, a magnetic field with constant intensity and continuously rotating direction will be formed, and the magnetic field rotation period is the same as the period of the three-phase alternating current.

[0023] The excitation device 1 cuts the stator winding of the three-phase motor (i.e., the stator to be measured) by generating a rotating magnetic field, thereby generating an induced voltage on the stator winding of the three-phase motor. The control device 3 can sample the induced voltage on the stator winding and determine the phase and frequency of the voltage on each stator winding. The connection state of each stator winding is determined based on the comparison of the phase and frequency with the predetermined standard phase and frequency. The connection state can specify whether the phase sequence of the sub-winding is correct and whether the winding is defective (for example, the internal connection of the winding is wrong and the number of windings is insufficient, etc.).

[0024] Compared with the method in the related art that uses power drive to make the magnetic field cut the stator coil, the detection device provided by the present invention can generate a stable rotating magnetic field through electromagnetic induction without the need for complex mechanical devices; and through a preset automatic judgment method, it realizes automated detection, avoiding the inefficient and inaccurate defects of manual detection methods.

[0025] In another embodiment provided by the present disclosure, Figure 2 As shown, the excitation device 1 further includes: an iron core 12; The core 12 is composed of a plurality of magnetically conductive laminated bodies stacked together to concentrate the magnetic field generated by the winding assembly 11 ; the winding assembly 11 is evenly arranged on the outer edge of the core 12 ; the number of pole pairs of the winding assembly 11 is determined according to the stator winding of the three-phase motor.

[0026] In the disclosed embodiment, Figure 2The left side view is the main view of the excitation device. The iron core 12 can be made of a laminated material with high magnetic permeability (for example, silicon steel sheets), which can provide a low-impedance closed path for the magnetic field generated by the winding assembly 11, so that the magnetic flux lines generated by the winding assembly 11 after power is turned on can efficiently pass through the iron core 12, reduce the divergence of the magnetic field, improve equipment efficiency, and reduce energy loss.

[0027] The iron core 12 may also serve as a fixing structure of the winding assembly 11 to provide mechanical support for the winding assembly 11 and prevent the coil of the winding assembly 11 from loosening or deforming.

[0028] The number of pole pairs refers to the number of pairs of north poles (N poles) and south poles (S poles) in a magnetic field. For example, a magnetic field with four magnetic poles (two N poles and two S poles) has a pole pair number of 2. The number of pole pairs of a three-phase motor stator can be determined based on the number of coils in each phase of the stator winding, the spatial distribution between the coils, and the connection method. The number of pole pairs of the excitation device can be the same as the number of pole pairs of the stator to be measured, and the number of pole pairs of the excitation device is also determined based on the number of coils in each winding assembly 11, the spatial distribution between the coils, and the connection method.

[0029] In another embodiment provided by the present disclosure, Figure 2 As shown, the excitation device 1 further includes: a positioning device; The positioning device is used to position the central axis of the excitation device 1 at a coaxial position with the central axis of the stator of the three-phase motor, and includes: a support shaft 13 and / or an insulating ring 14; The center part of the iron core 12 adopts a hollow structure, and the support shaft 13 is arranged in the hollow structure; the insulating ring 14 is arranged outside the iron core 12; A plurality of slot-shaped structures 15 are arranged circumferentially on the outer edge of the iron core 12 , and the winding assembly 11 is embedded in the slot-shaped structures 15 .

[0030] In the disclosed embodiment, Figure 2 The right side view is a side view of the excitation device. The positioning device can be used to position the central axis of the excitation device 1 and the central axis of the stator of the three-phase motor in a coaxial position, so that the magnetic flux lines generated by the excitation device 1 can evenly cut the stator winding of the three-phase motor. Thereby, the excitation device 1 can generate the same electromotive force (i.e., generate the same induced voltage) for the stator winding of the same type of three-phase motor, thereby improving the accuracy of detection. Among them, the support shaft 13 can be a hard metal shaft, and the insulating ring 14 can be an insulating material layer wrapped around the iron core.

[0031] The outer edge of the core 12 may be provided with a slot-like structure 15 for arranging the winding assembly 11. The opening of the slot-like structure 15 may be as small as possible, or may be sealed with a magnetic slot wedge. The number of the slot-like structures 15 may be the same as the stator winding of the three-phase motor to be tested, and the connection method of the winding assembly 11 arranged in the slot may also be the same as the stator winding of the three-phase motor, or a symmetrical three-phase winding having the same number of pole pairs as the stator winding of the three-phase motor may be used.

[0032] In another embodiment provided by the present disclosure, Figure 3 As shown, the control device 3 includes: a sampling module 31 and a main control module 32; The sampling module 31 is connected to the stator winding of the three-phase motor, and is used to sample the induced voltage of the stator winding of the three-phase motor, and obtain a sampling signal according to the induced voltage; The main control module 32 is connected to the sampling module 31 and is used to determine the amplitude and phase of the sampling signal; according to the amplitude and phase of the sampling signal, a detection result representing the connection state of the stator winding of the three-phase motor is obtained.

[0033] In the disclosed embodiment, the control device 3 includes: a sampling module 31 and a main control module 32. The sampling module 31 is connected to the stator winding of the three-phase motor, samples the induced voltage generated in each stator winding, and converts the induced voltage into a sampling signal after voltage reduction, filtering, amplification, etc. The main control module 32 can analyze the amplitude and phase of the input sampling signal and compare it with a predetermined reference value, so as to determine whether the stator winding of the detected three-phase motor meets the requirements.

[0034] In another embodiment provided by the present disclosure, Figure 4 As shown, the sampling module 31 includes: a first voltage drop circuit 311, a second voltage drop circuit 312, a first amplifier circuit 313 and a second amplifier circuit 314; The first voltage drop circuit 311 is connected to the first amplifier circuit 313, and is used to divide the voltage of the first stator winding of the three-phase motor relative to the voltage of the third stator winding of the three-phase motor to obtain a first divided voltage signal; The second voltage drop circuit 312 is connected to the second amplifier circuit 314, and is used to divide the voltage of the second stator winding of the three-phase motor relative to the voltage of the third stator winding of the three-phase motor to obtain a second divided voltage signal; The first amplifier circuit 313 is connected to the main control module 32, and is used to amplify the first voltage-divided signal to obtain a first sampling signal, and output the first sampling signal to the main control module 32; The second amplifier circuit 314 is connected to the main control module 32 , and is used for amplifying the second voltage-divided signal to obtain a second sampling signal, and outputting the second sampling signal to the main control module 32 .

[0035] In the disclosed embodiment, one phase of the stator winding in the three-phase motor can be selected as the reference potential, and the phase of the stator winding is connected to the ground terminal of the main control circuit, and the voltage division of the other two phases of the stator winding relative to the phase winding is determined respectively. The stator winding selected as the reference potential is the third stator winding, and the other two phases of the stator winding are the first stator winding and the second stator winding. By grounding the third stator winding as the reference potential, the first stator winding and the second stator winding can both use the potential of the third stator winding as a reference, avoiding the interference of the potential difference caused by different reference potentials and improving the accuracy of sampling.

[0036] After the connected stator winding is divided and filtered by the voltage drop circuit, a first divided voltage signal and a second divided voltage signal can be obtained respectively. The amplifier circuit can amplify the divided voltage signal at a certain ratio by the operational amplifier to obtain a sampling signal to adapt to the effective dynamic range of the main control module 32 and avoid signal distortion.

[0037] In another embodiment provided by the present disclosure, Figure 5a As shown, the first voltage drop circuit 311 includes: a first resistor 3111, a second resistor 3112, a third resistor 3113, a fourth resistor 3114 and a first capacitor 3115; One end of the first resistor 3111 is connected to the first stator winding of the three-phase motor, and the other end of the first resistor 3111 is connected to one end of the second resistor 3112; the other end of the second resistor 3112 is connected to one end of the third resistor 3113; the other end of the third resistor 3113 is respectively connected to one end of the fourth resistor 3114, one end of the first capacitor 3115 and the first amplifier circuit 313; the other end of the fourth resistor 3114 is grounded and respectively connected to the third stator winding of the three-phase motor and the other end of the first capacitor 3115; The first voltage drop circuit 311 determines the voltage division ratio of the first voltage drop circuit 311 through the ratio of the resistance values ​​of the first resistor 3111, the second resistor 3112, the third resistor 3113 and the fourth resistor 3114; the first capacitor 3115 is used to filter out interference in the first voltage division signal; like Figure 5b As shown, the second voltage drop circuit 312 includes: a fifth resistor 3121, a sixth resistor 3122, a seventh resistor 3123, an eighth resistor 3124 and a second capacitor 3125; One end of the fifth resistor 3121 is connected to the second stator winding of the three-phase motor, and the other end of the fifth resistor 3121 is connected to one end of the sixth resistor 3122; the other end of the sixth resistor 3122 is connected to one end of the seventh resistor 3123; the other end of the seventh resistor 3123 is respectively connected to one end of the eighth resistor 3124, one end of the second capacitor 3125, and the second amplifier circuit 314; the other end of the eighth resistor 3124 is grounded and respectively connected to the third stator winding of the three-phase motor and the other end of the second capacitor 3125; The second voltage drop circuit 312 determines the voltage division ratio of the second voltage drop circuit 312 according to the ratio of the resistance values ​​of the fifth resistor 3121, the sixth resistor 3122, the seventh resistor 3123 and the eighth resistor 3124; the second capacitor 3125 is used to filter out interference in the second voltage division signal.

[0038] In the embodiment of the present disclosure, the first voltage drop circuit 311 and the second voltage drop circuit 312 can adopt the same structure, and are respectively used for the voltage division of the first stator winding and the second stator winding compared with the third stator winding. The voltage division ratio of the two voltage drop circuits is the same, which is determined according to the ratio of the resistors in the voltage division circuit. Taking the first voltage drop circuit 311 as an example, its voltage division ratio ,in, is the resistance value of the first resistor 3111; is the resistance value of the second resistor 3112, is the resistance value of the third resistor 3113, is the resistance value of the fourth resistor 3114. In a possible application, The resistance value can be , , , The value can be adjusted according to the required voltage divider ratio, and the rated power can be selected as or power resistance, but it is necessary to ensure that the voltage across the fourth resistor 3114 is The output voltage of the first voltage drop circuit 311 is about ,in, is the potential difference between the first stator winding and the third stator winding.

[0039] Similarly, the voltage division ratio of the second voltage drop circuit 312 is ,in, is the resistance value of the first resistor 3111; is the resistance value of the second resistor 3112, is the resistance value of the third resistor 3113, is the resistance value of the fourth resistor 3114. The output voltage of the second voltage drop circuit 312 ,in, is the potential difference between the second stator winding and the third stator winding.

[0040] The first capacitor 3115 and the second capacitor 3125 in the first voltage drop circuit 311 and the second voltage drop circuit 312 are respectively used to filter out high-frequency interference signals in the circuits to prevent the interference signals from being input into the amplifying circuit.

[0041] In another embodiment provided by the present disclosure, Figure 6a As shown, the first amplifier circuit 313 includes: a first amplifier 3131, a ninth resistor 3132, a tenth resistor 3133 and a third capacitor 3134; The positive input end of the first amplifier 3131 is connected to the first voltage drop circuit 311; the negative input end of the first amplifier 3131 is grounded via the ninth resistor 3132, and is connected to the output end of the first amplifier 3131 via the tenth resistor 3133; the two ends of the third capacitor 3134 are respectively connected to the negative input end of the first amplifier 3131 and the output end of the first amplifier 3131; the output end of the first amplifier 3131 is connected to the main control module 32; The first amplifier circuit 313 determines the amplification factor of the first amplifier 3131 according to the ratio of the resistance values ​​of the ninth resistor 3132 and the tenth resistor 3133; the third capacitor 3134 is used to filter out noise in the first sampling signal; The second amplifier circuit 314 includes: a second amplifier 3141, an eleventh resistor 3142, a twelfth resistor 3143 and a fourth capacitor 3144; The positive input terminal of the second amplifier 3141 is connected to the second voltage drop circuit; the reverse input terminal of the second amplifier 3141 is grounded via the eleventh resistor 3142, and is connected to the output terminal of the second amplifier 3141 via the twelfth resistor 3143; the two ends of the fourth capacitor 3144 are respectively connected to the reverse input terminal of the second amplifier 3141 and the output terminal of the second amplifier 3141; the output terminal of the second amplifier 3141 is connected to the main control module 32; The second amplifier circuit 314 determines the amplification factor of the second amplifier 3141 according to the resistance ratio of the eleventh resistor 3142 and the twelfth resistor 3143 ; the fourth capacitor 3144 is used to filter out noise in the second sampling signal.

[0042] In the embodiment of the present disclosure, the first amplifier circuit 313 and the second amplifier circuit 314 can adopt the same structure, and are respectively used to amplify the corresponding voltage-divided signals to obtain corresponding sampling signals. Taking the first amplifier circuit 313 as an example, the first voltage-divided signal is input to the positive input terminal of the first amplifier 3131, and after being amplified by the first amplifier 3131, it is output as the first sampling signal through the output terminal of the first amplifier 3131. The amplification factor of the first amplifier circuit 313 is It can be determined according to the resistance values ​​of the ninth resistor 3132 and the tenth resistor 3133, that is, .in, is the resistance value of the ninth resistor 3132; is the resistance value of the tenth resistor 3133. The resistance value of the ninth resistor 3132 is The resistance of the tenth resistor 3133 is For example, we can get , that is, the amplification factor of the first amplifier circuit 313 for the input first voltage-divided signal is 3 times.

[0043] Similarly, the amplification factor of the second amplifier circuit 314 is ,in, is the resistance value of the eleventh resistor 3142; is the resistance value of the twelfth resistor 3143 .

[0044] In practical applications, the first amplifier circuit 313 and the second amplifier circuit 314 may use the same amplification factor.

[0045] In another embodiment provided by the present disclosure, Figure 7 As shown, the main control module 32 includes: a control chip 321; The control chip 321 is connected to the first amplifier circuit 313 and the second amplifier circuit 314 respectively; The control chip 321 is used to determine the waveform data of the fundamental and harmonic waves of the induced voltage of the stator winding of the three-phase motor according to the first sampling signal and the second sampling signal; and determine the connection state of the stator winding of the three-phase motor according to the waveform data by comparing it with the predetermined calibration data.

[0046] In the embodiment of the present disclosure, the waveform data may include: frequency, amplitude and phase.

[0047] The control chip 321 may be a microprocessor having analog-to-digital conversion function, calculation function, communication function, display interface, input-output interface and storage function. Figure 8 The control chip and external circuit shown are examples for illustration only and are not limiting. The external circuit may include: a reset circuit for restoring the chip to its initial state; a debug interface circuit for writing programs to the control chip and monitoring chip operation; a clock circuit for providing a clock reference for the system using a crystal oscillator, etc.

[0048] The analog-to-digital conversion interface of the control chip 321 is connected to the first amplifying circuit 313 and the second amplifying circuit 314 to convert the input first sampling signal and the second sampling signal into digital signals. Through the digital signal processing library of the microprocessor, the function is called to analyze the first sampling signal and the second sampling signal, so as to obtain the waveform frequency, amplitude and phase of the corresponding signal.

[0049] Here, the discrete Fourier transform function is used as an example to illustrate the waveform amplitude and phase analysis process of the signal.

[0050] First, determine the sampling rate and the number of sampling points respectively. You can set the microprocessor's sampling rate as high as possible, for example, This allows the high-order harmonics to be sampled as accurately as possible, ensuring that they are not aliased, improving accuracy, and using high sampling rates to smooth waveforms and reduce quantization errors. For the number of sampling points, a value that matches the fundamental frequency can be selected to avoid spectrum leakage; a larger number of sampling points can be selected without exceeding the microprocessor's computing power limit to provide high-precision analysis. The sampling resolution can be obtained based on the sampling rate and the number of sampling points. ,in, is the sampling rate, is the number of sampling points.

[0051] The sampling signal is sampled at equal intervals according to the sampling resolution, and the length is The discrete sequence . Further sampling of the following formula (1) Perform discrete Fourier transform to obtain a frequency domain complex sequence , each in the frequency domain Represents the signal at frequency The components at the position include amplitude and phase information.

[0052] , (1) According to the frequency domain complex sequence, the amplitude of the corresponding signal can be determined , Phase .

[0053] Since the induced voltage on the stator winding is excited by the rotating magnetic field of the excitation device, and the rotating magnetic field is generated by three-phase alternating current, the fundamental frequency of the sampling signal should be the same as the frequency of the three-phase alternating current under ideal conditions. If high-order harmonics appear in the sampling signal, it means that there are defects in the stator winding.

[0054] It should be noted that defects in stator windings are not the only cause of high-order harmonics. Nonlinear magnetic circuits (for example, core saturation, hysteresis, and eddy current effects), nonlinear power supplies (for example, power supplies containing harmonics), and external interference (for example, electromagnetic coupling, radio frequency interference, etc.) can also cause high-order harmonics. Therefore, it is necessary to use the stator windings of three-phase motors that have been tested and confirmed to be correctly wired, and use the detection data of these three-phase motors as calibration data for the same type of three-phase motors. Select representative harmonics as the main analysis object, and determine whether the stator windings of the three-phase motor being tested are correctly wired by comparing with the calibration data.

[0055] In one possible implementation, the fundamental wave, the 5th, 7th, 11th and 13th harmonics can be selected. , you need to target , , , and Harmonics under frequency are taken as the main analysis objects.

[0056] In another embodiment provided by the present disclosure, Figure 7 As shown, the main control module 32 also includes a power supply control circuit 322; The power supply control circuit 322 is connected to the control chip 321 and the power supply device respectively; it is used to control the on and off of the power supply device according to the control signal sent by the control chip 321; like Fig. 9 As shown, the power supply control circuit 322 includes: a thirteenth resistor 3221, a diode 3222 and a transistor 3223; One end of the thirteenth resistor 3221 is connected to the control chip, and the other end is connected to the base of the transistor 3223; the collector of the transistor 3223 is connected to the power supply device 2 and the positive electrode of the diode 3222 respectively, and the emitter of the transistor 3223 is grounded; the cathode of the diode 3222 is connected to the control device power supply and the power supply device 2 respectively; The control signal is input into the base of the transistor 3223 via the thirteenth resistor 3221 to control the on / off state of the transistor 3223, and the on / off state of the power supply device 2 is controlled by the on / off state of the transistor 3223; When the control signal is at a high level, the transistor 3223 is turned on, and the power supply device 2 is turned on; When the control signal is at a low level, the transistor 3223 is turned off and the power supply device 2 is turned off.

[0057] In the disclosed embodiment, the power supply control circuit 322 can control the on and off of the power supply device 2 according to the control signal of the control chip. One end of the thirteenth resistor 3221 can be connected to the general input and output (I / O) port of the control chip, and the other end is connected to the base of the transistor 3223, which serves as a current limiting resistor to limit the base current and protect the transistor. The diode 3222 is reversely connected in parallel with the power supply device 2 and can be used as a freewheeling diode 3222. When the power supply device 2 is powered off, the reverse electromotive force generated by the power supply device 2 can be discharged through the diode 3222 to prevent instantaneous high voltage from damaging circuit components.

[0058] The control signal output by the I / O port of the control chip can output a high level or a low level. When the I / O port outputs a high level, the collector and emitter of the transistor 3223 are connected, so that the power supply device 2 is turned on. When the I / O port outputs a low level, the collector and emitter of the transistor 3223 are disconnected, so that the power supply device 2 is turned off.

[0059] In another embodiment provided by the present disclosure, Fig.10 As shown, the power supply device 2 includes: an electric control device 21 and a transformer 22; The transformer 22 is connected to the excitation device 1 through the electric control device 21, and is used to transform the three-phase AC power input to the transformer 22 and output it to the excitation device 1; The electric control device 21 is connected to the control device 3 and is used to control the on / off of the circuit between the transformer 22 and the excitation device 1 according to the control signal of the control device 3 .

[0060] In the embodiment of the present disclosure, the power supply device 2 is used to provide three-phase AC power to the excitation device 1, and the power required by the excitation device 1 can be relatively small. The power of the transformer 22 for supplying power to the excitation device 1 can be selected This is just an example and is not limiting.

[0061] Transformer 22 can be an isolation transformer or an autotransformer, etc. The transformation ratio of transformer 22 can be determined according to the induced voltage of the stator winding. Here, a method for determining the transformation ratio of an autotransformer is provided as an example. The winding assembly of the excitation device 1 is powered by an autotransformer, and the transformation ratio of the autotransformer is adjusted from small to large, so that the voltage input to the excitation device 1 increases continuously, and further causes the rotating magnetic field generated by the excitation device 1 to increase, and the induced voltage on the stator winding will also increase continuously. The induced voltage on the stator winding is measured until the amplitude of the induced voltage reaches more than 10% of the rated voltage of the three-phase motor. The output voltage of the autotransformer at this time is determined as the output voltage of the autotransformer during the subsequent detection of the stator winding of this type of three-phase motor, thereby determining the transformation ratio of transformer 22.

[0062] In this embodiment, the electric control device 21 can be a relay. In the power supply device 2, the electric control device 21 plays the role of controlling the on and off of the circuit. The electric control device 21 can be connected in reverse parallel with the diode in the power supply control circuit in the control device 3 and controlled by the power supply control circuit. When it is necessary to start testing the three-phase motor, the control chip outputs a high-level control signal to control the relay to close, so that the power supply device 2 is turned on and power is supplied to the excitation device 1; when the detection is stopped, the control chip outputs a low-level control signal to control the relay to release and the power supply device 2 is disconnected.

[0063] In another embodiment provided by the present disclosure, the control device is further configured to obtain calibration data in the following manner: sampling the induced voltages of a plurality of stator windings whose connection states are determined; Acquire waveform data of fundamental wave and harmonic wave of induced voltage of stator winding; For each waveform data, the average value and standard deviation of each harmonic amplitude and fundamental phase difference are determined respectively; The mean value and standard deviation are stored in the control chip as calibration data.

[0064] In the disclosed embodiment, a plurality of tested and qualified stators of the same type may be obtained in advance and used as standard products. In order to make the calibration data as reliable as possible, as many standard products as possible may be obtained. In practical applications, at least 20 standard products may be selected.

[0065] Furthermore, the amplitude of each harmonic of the induced voltage of the stator winding of all standard products and the fundamental phase difference are obtained. After all data sampling is completed, these data are statistically analyzed to obtain the average value and standard deviation of each harmonic amplitude and fundamental phase difference as the calibration data for the formal test, which is used for subsequent testing of other stators of the same type. For the same model of stator, the calibration data can be obtained only once.

[0066] These calibration data can be stored in the storage space of the control chip, where the storage space can be a flash memory. It can also be stored in a separate storage device in the circuit, where the storage device can be a non-volatile memory such as an electrically erasable programmable read-only memory (EEPROM).

[0067] In another embodiment provided by the present disclosure, Figure 3 As shown, the detection device also includes: a display module 4 and a communication module 5; The display module 4 is connected to the control device and is used to display the wiring status; The communication module 5 is connected to the control device and is used to transmit the wiring status to the host computer.

[0068] In the disclosed embodiment, the detection device may also be provided with a display module 4, which may include a display interface circuit and a display screen. The display screen may be a light emitting diode (LED) or a liquid crystal display (LCD). The display module 4 may connect the display screen to the display interface of the control chip through the display interface circuit, so that the display screen displays the corresponding wiring status of the corresponding stator. The communication module 5 may be an RS485 communication interface circuit, and the communication module 5 may be connected to the communication interface of the control chip to transmit the wiring status to the host computer.

[0069] Here we provide Fig.11 As shown, a detection method including a calibration process and a detection process is used as an example.

[0070] When a certain type of stator needs to be tested, it can be determined first whether the testing device has stored calibration data of the same type as the stator to be tested. If the calibration data already exists, the testing process is entered; if not, the calibration process is entered.

[0071] After entering the calibration process, you can perform the following steps: S1101. Determine the quantity of standard products.

[0072] S1102, setting up a detection device. Putting the excitation device into the stator to ensure that the center line is coaxial. Connecting the voltage drop circuit in the sampling module to the corresponding phase in the stator according to the wiring method provided in the present disclosure.

[0073] S1103, sampling harmonic data. The control device controls the power supply device to close, so that the excitation device is powered and an induced voltage is generated on the stator winding; the sampling module obtains a sampling signal according to the induced voltage, and outputs the sampling signal to the control chip, which analyzes the corresponding waveform data for the harmonics of the preset frequency.

[0074] S1104, determine whether sampling is completed. Determine whether sampling is completed based on the determined number of standard products and the number of waveform data sampled. If sampling is completed, proceed to the next step to determine the average value and standard deviation based on all waveform data; if sampling is not completed, return to the above step 2, set the excitation device to the new standard product, and connect the sampling module to the new standard product.

[0075] S1105, obtaining calibration data. The corresponding average value and standard deviation can be determined according to all waveform data, and the obtained average value and standard deviation are the calibration data of this type of stator.

[0076] S1106. Store calibration data.

[0077] After entering the detection process, you can perform the following steps: S1107, read calibration data.

[0078] S1108, setting up a detection device: Setting up an excitation device in the stator to be measured, and connecting a sampling module to the stator winding.

[0079] S1109. Sample harmonic data.

[0080] S1110, data comparison. Compare the waveform data obtained by this sampling with the calibration data, and analyze the difference between the amplitude of each harmonic and the amplitude in the calibration data. If the deviation range of the difference and the standard deviation of the amplitude in the calibration data is within a preset range, the amplitude data of the harmonic is considered qualified.

[0081] In the same way, it is also possible to determine whether the phase data of each harmonic is qualified. In a possible implementation, the range of 6 times the calibration data can be set to be the qualified range.

[0082] Furthermore, the phase sequence of the stator winding can be determined to be correct based on the positive and negative signs of the phase data. That is, when the phase of the stator being measured is consistent with the phase of the calibration data, it means that the phase sequence of the stator being measured is correct, otherwise the phase sequence is wrong.

[0083] S1111, output results. The wiring status obtained through data comparison is output to the display module and the host computer respectively, so as to facilitate the subsequent processing of the measured sub-element according to the wiring status.

[0084] The present disclosure also provides an electronic device, including: a detection device as provided in any one of the above embodiments.

[0085] Through the description of the above implementation methods, those skilled in the art can clearly understand that the embodiments of the present disclosure can be implemented by hardware, or by means of software plus a necessary general hardware platform. Based on such an understanding, the technical solution of the embodiments of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present disclosure.

[0086] Those skilled in the art will appreciate that the accompanying drawings are merely schematic diagrams of a preferred embodiment, and the modules or processes in the accompanying drawings are not necessarily required for implementing the present disclosure.

[0087] Those skilled in the art can understand that the modules in the device in the embodiment can be distributed in the device in the embodiment according to the description of the embodiment, or can be changed accordingly and located in one or more devices different from the present embodiment. The modules in the above embodiment can be combined into one module, or can be further divided into multiple sub-modules.

[0088] The serial numbers of the above-mentioned embodiments of the present disclosure are only for description and do not represent the advantages or disadvantages of the embodiments.

[0089] Obviously, those skilled in the art can make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is also intended to include these modifications and variations.

Claims

1. A detection device, characterized in that: Applicable to a three-phase motor, comprising: an excitation device, a power supply device and a control device; the excitation device comprises a plurality of winding components; The power supply device is connected to the excitation device and is used to supply power to the winding assembly so that the winding assembly generates a rotating magnetic field; The excitation device is used to generate an induced voltage on the stator winding of the three-phase motor through the rotating magnetic field; The control device is used to sample the induced voltage of the stator winding of the three-phase motor and detect the connection state of the stator winding of the three-phase motor according to the induced voltage.

2. The device according to claim 1, characterized in that The excitation device further includes: an iron core; The iron core is composed of a plurality of magnetically conductive laminated bodies stacked together to concentrate the magnetic field generated by the winding assembly; the winding assembly is evenly arranged on the outer edge of the iron core; and the number of pole pairs of the winding assembly is determined according to the stator winding of the three-phase motor.

3. The device according to claim 2, characterized in that The excitation device further comprises: a positioning device; The positioning device is used to position the central axis of the excitation device at a coaxial position with the central axis of the stator of the three-phase motor, and includes: a support shaft and / or an insulating ring; The central part of the iron core adopts a hollow structure, and the support shaft is arranged in the hollow structure; the insulating ring is arranged outside the iron core; A plurality of slot-shaped structures are arranged circumferentially on the outer edge of the iron core, and the winding components are embedded in the slot-shaped structures.

4. The device according to claim 1, characterized in that The control device comprises: a sampling module and a main control module; The sampling module is connected to the stator winding of the three-phase motor, and is used to sample the induced voltage of the stator winding of the three-phase motor, and obtain a sampling signal according to the induced voltage; The main control module is connected to the sampling module and is used to determine the amplitude and phase of the sampling signal; according to the amplitude and phase of the sampling signal, a detection result representing the connection state of the stator winding of the three-phase motor is obtained.

5. The device according to claim 4, characterized in that The sampling module comprises: a first voltage drop circuit, a second voltage drop circuit, a first amplifier circuit and a second amplifier circuit; The first voltage drop circuit is connected to the first amplifier circuit and is used to divide the voltage of the first stator winding of the three-phase motor relative to the voltage of the third stator winding of the three-phase motor to obtain a first divided voltage signal; The second voltage drop circuit is connected to the second amplifier circuit and is used to divide the voltage of the second stator winding of the three-phase motor relative to the third stator winding of the three-phase motor to obtain a second divided voltage signal; The first amplifier circuit is connected to the main control module, and is used to amplify the first voltage-divided signal to obtain a first sampling signal, and output the first sampling signal to the main control module; The second amplifier circuit is connected to the main control module, and is used for amplifying the second voltage-divided signal to obtain a second sampling signal, and outputting the second sampling signal to the main control module.

6. The device according to claim 5, characterized in that The first voltage drop circuit includes: a first resistor, a second resistor, a third resistor, a fourth resistor and a first capacitor; One end of the first resistor is connected to the first stator winding of the three-phase motor, and the other end of the first resistor is connected to one end of the second resistor; the other end of the second resistor is connected to one end of the third resistor; the other end of the third resistor is respectively connected to one end of the fourth resistor, one end of the first capacitor and the first amplifier circuit; the other end of the fourth resistor is grounded and respectively connected to the third stator winding of the three-phase motor and the other end of the first capacitor; The first voltage drop circuit determines a voltage division ratio of the first voltage drop circuit by a ratio of resistance values ​​of the first resistor, the second resistor, the third resistor and the fourth resistor; the first capacitor is used to filter out interference in the first voltage division signal; The second voltage drop circuit includes: a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor and a second capacitor; One end of the fifth resistor is connected to the second stator winding of the three-phase motor, and the other end of the fifth resistor is connected to one end of the sixth resistor; the other end of the sixth resistor is connected to one end of the seventh resistor; the other end of the seventh resistor is respectively connected to one end of the eighth resistor, one end of the second capacitor and the second amplifier circuit; the other end of the eighth resistor is grounded and respectively connected to the third stator winding of the three-phase motor and the other end of the second capacitor; The second voltage drop circuit determines a voltage division ratio of the second voltage drop circuit according to a ratio of resistance values ​​of the fifth resistor, the sixth resistor, the seventh resistor and the eighth resistor; and the second capacitor is used to filter out interference in the second voltage division signal.

7. The device according to claim 5, characterized in that The first amplifying circuit comprises: a first amplifier, a ninth resistor, a tenth resistor and a third capacitor; The positive input end of the first amplifier is connected to the first voltage drop circuit; the reverse input end of the first amplifier is grounded via a ninth resistor, and connected to the output end of the first amplifier via a tenth resistor; the two ends of the third capacitor are respectively connected to the reverse input end of the first amplifier and the output end of the first amplifier; the output end of the first amplifier is connected to the main control module; The first amplifier circuit determines the amplification factor of the first amplifier according to the ratio of the resistance values ​​of the ninth resistor and the tenth resistor; the third capacitor is used to filter out noise in the first sampling signal; The second amplifying circuit comprises: a second amplifier, an eleventh resistor, a twelfth resistor and a fourth capacitor; The positive input end of the second amplifier is connected to the second voltage drop circuit; the reverse input end of the second amplifier is grounded via an eleventh resistor, and is connected to the output end of the second amplifier via a twelfth resistor; the two ends of the fourth capacitor are respectively connected to the reverse input end of the second amplifier and the output end of the second amplifier; the output end of the second amplifier is connected to the main control module; The second amplifier circuit determines the amplification factor of the second amplifier according to the ratio of the resistance values ​​of the eleventh resistor and the twelfth resistor; and the fourth capacitor is used to filter out noise in the second sampling signal.

8. The device according to claim 5, characterized in that The main control module includes: a control chip; The control chip is connected to the first amplifying circuit and the second amplifying circuit respectively; The control chip is used to determine the waveform data of the fundamental wave and harmonic wave of the induced voltage of the stator winding of the three-phase motor according to the first sampling signal and the second sampling signal; and determine the connection state of the stator winding of the three-phase motor according to the waveform data by comparing with predetermined calibration data.

9. The device according to claim 8, characterized in that The main control module also includes a power supply control circuit; The power supply control circuit is connected to the control chip and the power supply device respectively; and is used to control the on and off of the power supply device according to the control signal sent by the control chip; The power supply control circuit comprises: a thirteenth resistor, a diode and a triode; One end of the thirteenth resistor is connected to the control chip, and the other end is connected to the base of the transistor; the collector of the transistor is connected to the power supply device and the positive electrode of the diode respectively, and the emitter of the transistor is grounded; the cathode of the diode is connected to the control device power supply and the power supply device respectively; The control signal is input into the base of the transistor via the thirteenth resistor to control the on / off state of the transistor, and the on / off state of the power supply device is controlled through the on / off state of the transistor; When the control signal is at a high level, the transistor is turned on and the power supply device is turned on; When the control signal is at a low level, the transistor is turned off and the power supply device is turned off.

10. The device according to claim 1, characterized in that The power supply device comprises: an electric control device and a transformer; The transformer is connected to the excitation device through the electronic control device, and is used to transform the three-phase alternating current input to the transformer and output it to the excitation device; The electric control device is connected to the control device and is used to control the on-off of the circuit between the transformer and the excitation device according to the control signal of the control device.

11. The device according to claim 8, characterized in that The control device is further used to obtain the calibration data in the following manner: sampling the induced voltages of a plurality of stator windings whose connection states are determined; Acquire waveform data of fundamental wave and harmonic wave of the induced voltage of the stator winding; For each waveform data, the average value and standard deviation of each harmonic amplitude and fundamental phase difference are determined respectively; The average value and the standard deviation are stored in the control chip as calibration data.

12. The device according to claim 1, characterized in that Also includes: Display module and communication module; The display module is connected to the control device and is used to display the wiring status; The communication module is connected to the control device and is used to transmit the wiring status to the host computer.

13. An electronic device, characterized in that: include: A detection device as claimed in any one of claims 1 to 12.

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