Detection circuit of contact switch and wire stripping equipment

Abstract

The invention discloses a detection circuit of a contact switch and wire stripping equipment. The detection circuit of the touch switch comprises a power supply control module, an isolation power supply module, a main control module and a detection module, the isolation power supply module is electrically connected with the power supply control module and the detection module. The detection module is electrically connected with the first contact and the second contact. The main control module is electrically connected with the power supply control module and the detection module respectively; and the main control module is used for outputting a starting signal to the power supply control module, receiving a detection signal output by the detection module and determining the connection state of the first contact and the second contact according to the detection signal. The detection circuit is formed by the power supply control module, the isolation power supply module, the main control module, the detection module, the first contact and the second contact, the connection state of the first contact and the second contact is judged, the feed amount in the wire stripping process is further increased, and the wire stripping effect is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of wire stripping, and in particular to a detection circuit of a contact switch and a wire stripping device. Background Art

[0002] In the existing live distribution network operations, such as live access to drainage lines and branch line leads, it is necessary to strip the insulation layer of the wire during the operation. The current methods include manual stripping and automatic stripping by intelligent devices. During the automatic stripping process of the intelligent device, it is necessary to intelligently identify whether the insulation of the wire has been stripped cleanly. One of the existing identification methods is to manually preset the stripping depth, and the stripping tool automatically stops feeding after reaching the preset stripping depth; since there will be errors in the production and processing of the wire insulation, the thickness of the insulation varies, and setting a fixed value for the feed amount will easily cut the wire or fail to completely strip it clean. One method is to illuminate the wire with a color sensor, and identify whether the wire insulation has been stripped by identifying the color difference between the wire insulation and the aluminum wire core, so as to determine whether to stop feeding. Since it is identified by optical signals, it often causes large identification errors under strong outdoor light or the difference in the illumination angle between the sensor and the wire. Summary of the invention

[0003] The present invention provides a detection circuit of a contact switch and a wire stripping device, which utilizes the detection circuit to accurately determine the wire stripping state, so as to accurately control the feed amount and ensure the wire stripping effect.

[0004] In a first aspect, the present invention provides a detection circuit of a contact switch, the contact switch comprising a first contact and a second contact, including: a power control module, an isolation power module, a main control module and a detection module;

[0005] The isolated power supply module is electrically connected to the power supply control module and the detection module respectively;

[0006] The detection module is electrically connected to the first contact and the second contact respectively;

[0007] The main control module is electrically connected to the power control module and the detection module respectively;

[0008] The main control module is used to output a start signal to the power control module and receive a detection signal output by the detection module, and determine a connection state between the first contact and the second contact according to the detection signal.

[0009] Optionally, the power control module includes a first switch circuit and a second switch circuit;

[0010] The first end of the first switch circuit is electrically connected to the main control module; the second end of the first switch circuit is electrically connected to the first end of the second switch circuit;

[0011] The second end of the second switch circuit is electrically connected to the first voltage source; the third end of the second switch circuit is electrically connected to the input end of the isolation power supply module.

[0012] Optionally, the first switch circuit includes a first transistor, and the second switch circuit includes a second transistor;

[0013] The first electrode of the first transistor is electrically connected to the main control module; the second electrode of the first transistor is grounded; the third electrode of the first transistor is electrically connected to the first electrode of the second transistor;

[0014] The second electrode of the second transistor is electrically connected to the first voltage source; and the third electrode of the second transistor is electrically connected to the input end of the isolation power supply module.

[0015] Optionally, the detection module includes an optical coupling chip;

[0016] The optical coupling chip includes a light emitting diode and a light detector;

[0017] The anode of the light emitting diode is electrically connected to the first output terminal of the isolated power supply module; the cathode of the light emitting diode is electrically connected to the second contact;

[0018] The output end of the light detector is electrically connected to the main control module.

[0019] Optionally, the detection module further includes a first resistor and a second resistor;

[0020] The first end of the first resistor is electrically connected to the output end of the light detector, the second end of the first resistor is electrically connected to the first end of the second resistor and the main control module respectively, and the second end of the second resistor is grounded.

[0021] Optionally, the detection module further includes a high voltage protection circuit;

[0022] The high voltage protection circuit is electrically connected to the second contact and the cathode of the light emitting diode respectively.

[0023] Optionally, the high voltage protection circuit comprises a first diode, a second diode and a third diode connected in series in sequence;

[0024] The first end of the first diode is electrically connected to the second end of the light emitting diode; the second end of the third diode is electrically connected to the second contact.

[0025] Optionally, the detection module further includes a third resistor and a first capacitor;

[0026] A first end of the third resistor is electrically connected to the first contact, a second end of the third resistor is electrically connected to a first end of the first capacitor, and a second end of the first capacitor is electrically connected to the first contact.

[0027] Optionally, the detection module further includes a fourth resistor and a second capacitor;

[0028] The fourth resistor and the second capacitor are arranged in parallel;

[0029] The first end of the fourth resistor is electrically connected to the first output end and the second voltage source of the isolation power supply module respectively; the second end of the fourth resistor is grounded.

[0030] In a second aspect, the present invention provides a wire stripping device, comprising a detection circuit of the contact switch described in any one of the first aspects;

[0031] The wire stripping device further includes a conductive cutter, a conductive probe and a wire core; the conductive probe is the first contact, and the wire core is the second contact; or, the conductive probe is the second contact, and the wire core is the first contact.

[0032] The technical solution of the embodiment of the present invention provides a detection circuit of a contact switch, the contact switch includes a first contact and a second contact, and the detection circuit of the contact switch includes: a power control module, an isolation power module, a main control module and a detection module; the isolation power module is electrically connected to the power control module and the detection module respectively; the detection module is electrically connected to the first contact and the second contact respectively; the main control module is electrically connected to the power control module and the detection module respectively; the main control module is used to output a start signal to the power control module and receive a detection signal output by the detection module, and determine the connection state of the first contact and the second contact according to the detection signal. The detection circuit is formed by the power control module, the isolation power module, the main control module and the detection module, and the connection state of the first contact and the second contact is judged, and then the feed amount during the wire stripping process is determined to ensure the wire stripping effect.

[0033] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 A schematic diagram of the structure of a detection circuit of a contact switch provided by an embodiment of the present invention;

[0036] Figure 2 A schematic structural diagram of another detection circuit of a contact switch provided by an embodiment of the present invention;

[0037] Figure 3 A schematic structural diagram of a wire stripping device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0039] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0040] Figure 1 A schematic diagram of a detection circuit of a contact switch provided by an embodiment of the present invention, Figure 2 A schematic diagram of the structure of another detection circuit of a contact switch provided by an embodiment of the present invention is shown in FIG. Figure 1 and Figure 2As shown, the contact switch includes a first contact K1 and a second contact K2, and the detection circuit of the contact switch includes: a power control module 101, an isolation power module U9, a main control module 102 and a detection module 103; the isolation power module U9 is electrically connected to the power control module 101 and the detection module 103 respectively; the detection module 103 is electrically connected to the first contact K1 and the second contact K2 respectively; the main control module 102 is electrically connected to the power control module 101 and the detection module 103 respectively; the main control module 102 is used to output a start signal to the power control module 101 and receive a detection signal output by the detection module 103, and determine the connectivity status of the first contact K1 and the second contact K2 according to the detection signal.

[0041] Among them, the power control module 101 is electrically connected to the main control module 102, and the main control module 102 can be a main control chip with the functions of signal output, reception, processing and control. When the wire stripping device performs wire stripping, the output terminal GD_PWR of the main control module 102 will output a start signal to the power control module 101, so that the detection circuit of the contact switch starts the detection function, and the power control module 101 controls the power output to avoid energy loss and reduce the total circuit power consumption in the wire stripping device. The isolation power module U9 is connected to the power control module 101 and the detection module 103 respectively, and the isolation power module U9 plays a high-voltage isolation role to avoid damage to the main control module 102 due to the live high voltage, ensure the normal operation of the high-voltage line when it is live, and improve safety. The input end of the isolation power module U9 is electrically connected to the power control module 101, the first output end of the isolation power module U9 is electrically connected to the detection module 103, the second output end of the isolation power module U9 is electrically connected to the first contact K1 through the detection module 103, and the ground end of the isolation power module U9 is grounded. The detection module 103 is also connected to the first contact K1 and the second contact K2 in the contact switch. The contact switch is set in the wire stripping process of the wire stripping device. The conductive probe is the first contact K1 and the wire core is the second contact K2; or the conductive probe is the second contact K2. When the first contact K1 and the second contact K2 are not in contact, the detection module 103 is in a non-conductive state, and the detection module 103 will not output a detection signal to the detection signal receiving port GD_SW of the main control module 102. The main control module 102 believes that the wire stripping has not touched the wire core at this time, and the conductive cutter remains in a working state. When the first contact K1 and the second contact K2 are in contact, the detection module 103 is in a conducting state, the detection module 103 will output a detection signal, and the main control module 102 is also electrically connected to the detection module 103. The main control module 102 receives the detection signal, and the main control module 102 believes that the first contact K1 and the second contact K2 are in a connected state at this time, and believes that the wire stripping has been completed. At this time, the main control module 102 is also connected to the feed motor that controls the conductive tool. The main control module 102 controls the feed motor to stop working, and the conductive tool stops working, thereby improving the recognition accuracy and ensuring the accuracy of the wire stripping.

[0042] The embodiment of the present invention sets a power control module, an isolated power module, a main control module and a detection module, so that the power control module, the isolated power module, the main control module, the detection module, the first contact and the second contact constitute a detection module 103, and the main control module is used to output a start signal to the power control module and receive a detection signal output by the detection module, and determine the connection state of the first contact and the second contact according to the detection signal. By judging the connection state of the first contact and the second contact, the feed amount during the wire stripping process is determined to ensure the wire stripping effect.

[0043] Optional, reference Figure 1 and Figure 2 The power control module 101 includes a first switch circuit 1011 and a second switch circuit 1012; the first end of the first switch circuit 1011 is electrically connected to the main control module 102; the second end of the first switch circuit 1011 is electrically connected to the first end of the second switch circuit 1012; the second end of the second switch circuit 1012 is electrically connected to the first voltage source VCC; the third end of the second switch circuit 1012 is electrically connected to the input end of the isolation power supply module U9.

[0044] Among them, a first switch circuit 1011 and a second switch circuit 1012 are set in the power control module 101, and the first switch circuit 1011 and the second switch circuit 1012 are electrically connected. The first switch circuit 1011 receives the start signal output by the main control chip, the first switch circuit 1011 is turned on, and then the second switch circuit 1012 is turned on, the second switch circuit 1012 is electrically connected to the first voltage source VCC, after the second switch circuit 1012 is turned on, the first voltage source VCC is connected and output to the input end of the isolated power supply module U9 through the second switch circuit 1012, so that the isolated power supply module U9 is in a working state.

[0045] Specifically, refer to Figure 1 and Figure 2 , the first switch circuit 1011 includes a first transistor Q3, and the second switch circuit 1012 includes a second transistor Q2; the first electrode of the first transistor Q3 is electrically connected to the main control module 102; the second electrode of the first transistor Q3 is grounded; the third electrode of the first transistor Q3 is electrically connected to the first electrode of the second transistor Q2; the second electrode of the second transistor Q2 is electrically connected to the first voltage source VCC; the third electrode of the second transistor Q2 is electrically connected to the input end of the isolation power supply module U9. Exemplarily, the first transistor Q3 can be an NPN-type triode, and the second transistor Q2 can be a P-type MOS transistor. The first electrode of the first transistor Q3 is the base, the second electrode of the first transistor Q3 is the emitter, the third electrode of the first transistor Q3 is the collector, the first electrode of the second transistor Q2 is the gate, the second electrode of the second transistor Q2 is the source, and the third electrode of the second transistor Q2 is the drain. When the main control chip outputs a start signal value to the first pole of the first transistor Q3, the start signal can be a high-level signal, the first transistor Q3 is turned on, and the gate of the second transistor Q2 is grounded, and the second transistor Q2 is turned on, so that the voltage signal output by the first voltage source VCC is transmitted to the input end of the isolation power module U9, so that the isolation power module U9 is in working state. The voltage signal output by the first voltage source VCC can be 12.6V. A current limiting resistor R15 located between the main control module 102 and the first transistor Q3 can also be provided in the power control module 101, and the resistance value of the current limiting resistor R15 can be selected according to the start signal of the main control module 102, the maximum output current and the type of the first transistor Q3.

[0046] The power control module 101 may also be provided with a resistor R10 located between the third electrode of the first transistor Q3 and the first electrode of the second transistor Q2 and a resistor R5 located between the first voltage source VCC and the first electrode of the second transistor Q2, which can ensure the conduction effect of the first transistor Q3 and the second transistor Q2. The power control module 101 is also provided with a capacitor C6, which plays a certain filtering role.

[0047] Optional, reference Figure 1 and Figure 2 The detection module 103 includes an optocoupler chip U7; the optocoupler chip U7 includes a light-emitting diode 10 and a light detector 11; the anode of the light-emitting diode 10 is electrically connected to the first output end of the isolation power supply module U9; the cathode of the light-emitting diode 10 is electrically connected to the second contact K2; the output end of the light detector 11 is electrically connected to the main control module 102.

[0048] Among them, when the isolated power supply module U9 is in a working state, the first output end of the isolated power supply module U9 is electrically connected to the anode of the light-emitting diode 10, and the cathode of the light-emitting diode 10 is electrically connected to the second contact K2. When the first contact K1 contacts the second contact K2, the first contact K1, the second output end of the isolated power supply module U9, the first output end of the isolated power supply module U9, the anode of the light-emitting diode 10, the cathode of the light-emitting diode 10 and the second contact K2 are in a conductive state, and the light-emitting diode 10 lights up and emits a light signal, so that the light detector 11 receives the light signal, and then the output end of the light detector 11 produces a corresponding electrical signal change, and the drain of the upper MOS tube in the light detector 11 is connected to the first voltage source VCC, and the upper MOS tube is turned on, and the voltage signal output by the first voltage source VCC is output to the main control module 102. The voltage signal at this time is a detection signal, which can be received by the main control module 102. The main control module 102 recognizes that the first contact K1 and the second contact K2 are in a connected state according to the detection signal, and controls the conductive tool to stop working.

[0049] Optional, reference Figure 1 and Figure 2 The detection module 103 also includes a first resistor R4 and a second resistor R23; the first end of the first resistor R4 is electrically connected to the output end of the light detector 11, the second end of the first resistor R4 is electrically connected to the first end of the second resistor R23 and the main control module 102, and the second end of the second resistor R23 is grounded.

[0050] Among them, the detection module 103 also includes a first resistor R4 and a second resistor R23, the first resistor R4 and the second resistor R23 form a voltage divider circuit, the first end of the first resistor R4 is connected to the output end of the light detector 11, the second end of the first resistor R4 and the first end of the second resistor R23 are both connected to the main control module 102, and the voltage of the detection signal is adjusted by the first resistor R4 and the second resistor R23, so that the main control chip can accurately identify the detection signal, and then accurately judge the connection state of the first contact K1 and the second contact K2. The second end of the second resistor R23 is grounded, and the second resistor R23 can also act as a pull-down resistor, so that when the first contact K1 and the second contact K2 are in a non-contact state, it plays a pull-down state to ensure the stability of the detection signal receiving port GD_SW in the main control module 102.

[0051] Optional, reference Figure 1 and Figure 2 The detection module 103 further includes a high-voltage protection circuit 1031; the high-voltage protection circuit 1031 is electrically connected to the second contact K2 and the cathode of the light-emitting diode 10. By providing the high-voltage protection circuit 1031, the high-voltage protection circuit 1031 can prevent reverse breakdown, and avoid that when the first contact K1 and the second contact K2 are in contact, the high voltage on the hanging wire is transmitted to the optical coupling chip U7 through the first contact K1 and the second contact K2, causing damage to the optical coupling chip U7.

[0052] Optional References Figure 1 and Figure 2 The high-voltage protection circuit 1031 includes a first diode D1, a second diode D2 and a third diode D4 connected in series in sequence; the first end of the first diode D1 is electrically connected to the second end of the light-emitting diode 10; the second end of the third diode D4 is electrically connected to the second contact K2.

[0053] Among them, the high-voltage protection circuit 1031 includes a first diode D1, a second diode D2 and a third diode D4 connected in series in sequence; the third diode D4 is located on the side close to the second contact K2, and the maximum reverse voltage of the third diode D4 can be set to be greater than the maximum reverse voltage of the first diode D1 and the second diode D2. For example, the maximum reverse voltage of the first diode D1 and the second diode D2 can be 1kV, and the maximum reverse voltage of the third diode D4 can be 8V. The first diode D1, the second diode D2 and the third diode D4 together constitute a 10kV anti-reverse breakdown high-voltage protection circuit 1031, which avoids the high voltage on the hanging wire being transmitted to the optocoupler chip U7 through the first contact K1 and the second contact K2 when the first contact K1 and the second contact K2 are in contact, causing damage to the optocoupler chip U7.

[0054] The detection module 103 is also provided with a resistor R9 located between the first diode D1 and the cathode of the light-emitting diode 10 and a resistor R14 located between the second output end of the isolation power module U9 and the first contact K1, which play a current limiting role for the light-emitting diode 10. The resistor R14 can also play a certain protective role for the isolation power module U9.

[0055] Optional, reference Figure 1 and Figure 2 The detection module 103 also includes a third resistor R16 and a first capacitor C9; the first end of the third resistor R16 is electrically connected to the first contact K1, the second end of the third resistor R16 is electrically connected to the first end of the first capacitor C9, and the second end of the first capacitor C9 is electrically connected to the first contact K1.

[0056] Among them, the detection module 103 is also provided with a third resistor R16 and a first capacitor C9 located between the first contact K1 and the second contact K2. The third resistor R16 and the first capacitor C9 constitute an absorption circuit. For example, when high voltage is introduced into the first contact K1, the voltage at the second contact K2 will also be raised through the absorption effect of the third resistor R16 and the first capacitor C9, so that the voltages at the first contact K1 and the second contact K2 are similar, and spark discharge will not be caused by insufficient gap.

[0057] Optional, reference Figure 1 and Figure 2 The detection module 103 also includes a fourth resistor R7 and a second capacitor C8; the fourth resistor R7 and the second capacitor C8 are arranged in parallel; the first end of the fourth resistor R7 is electrically connected to the first output end of the isolation power supply module U9 and the second voltage source VCC1 respectively; the second end of the fourth resistor R7 is grounded.

[0058] Among them, a fourth resistor R7 and a second capacitor C8 are also provided in the detection module 103. The fourth resistor R7 and the second capacitor C8 constitute a "false" load. The fourth resistor R7 is connected to the second voltage source VCC1. The resistance of the fourth resistor R7 is 12KΩ. The voltage value of the voltage signal output by the second voltage source OS is 12V. When the first contact K1 and the second contact K2 are in a non-contact state, the isolation power supply module U9 can continuously output at least 10mA current to stabilize the working state of the isolation power supply module U9.

[0059] Based on the same inventive concept, an embodiment of the present invention further provides a wire stripping device, Figure 3 A schematic diagram of the structure of a wire stripping device provided by an embodiment of the present invention is shown in FIG. Figure 3As shown, the wire stripping device is used to execute the detection circuit of the contact switch provided in any embodiment of the present invention, and can achieve the beneficial effects of the detection circuit of the contact switch provided in any embodiment of the present invention. The similarities can refer to the above description of the detection circuit of the contact switch provided in the embodiment of the present invention, which will not be repeated here.

[0060] The wire stripping equipment also includes a conductive cutter, a conductive probe and a wire core; the conductive probe is the first contact, and the wire core is the second contact; or, the conductive probe is the second contact, and the wire core is the first contact. The conductive cutter is connected to the main control module via a feed motor, and its working process is to first clamp the insulated cable, and then the wire stripping conductive cutter head rotates around the cable. When the cable wire core is not stripped, the conductive cutter head rotates around the cable while feeding radially along the wire, and the entire wire stripping equipment moves forward axially, which is equivalent to the conductive cutter head making a spiral motion. When the conductive cutter head contacts the reverse wire core, when the detection circuit of the contact switch sends a detection signal to the main control module, the main control module can detect that the first contact and the second contact are in a connected state, thereby controlling the conductive cutter head to stop feeding; when the main control module fails to receive the detection signal, the conductive cutter maintains the feed amount and continues to rotate along the cable until the stripping length reaches the set threshold. The setting of the detection circuit of the contact switch effectively ensures the wire stripping accuracy of the wire stripping equipment.

[0061] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A detection circuit of a contact switch, the contact switch comprising a first contact and a second contact, characterized in that: include: Power control module, isolated power module, main control module and detection module; The isolated power supply module is electrically connected to the power supply control module and the detection module respectively; The detection module is electrically connected to the first contact and the second contact respectively; The main control module is electrically connected to the power control module and the detection module respectively; The main control module is used to output a start signal to the power control module and receive a detection signal output by the detection module, and determine a connection state between the first contact and the second contact according to the detection signal.

2. The detection circuit of the contact switch according to claim 1, characterized in that: The power control module includes a first switch circuit and a second switch circuit; The first end of the first switch circuit is electrically connected to the main control module; the second end of the first switch circuit is electrically connected to the first end of the second switch circuit; The second end of the second switch circuit is electrically connected to the first voltage source; the third end of the second switch circuit is electrically connected to the input end of the isolation power supply module.

3. The detection circuit of the contact switch according to claim 2, characterized in that: The first switch circuit includes a first transistor, and the second switch circuit includes a second transistor; The first electrode of the first transistor is electrically connected to the main control module; the second electrode of the first transistor is grounded; the third electrode of the first transistor is electrically connected to the first electrode of the second transistor; The second electrode of the second transistor is electrically connected to the first voltage source; and the third electrode of the second transistor is electrically connected to the input end of the isolation power supply module.

4. The detection circuit of the contact switch according to claim 1, characterized in that: The detection module includes an optical coupling chip; The optical coupling chip includes a light emitting diode and a light detector; The anode of the light emitting diode is electrically connected to the first output terminal of the isolated power supply module; the cathode of the light emitting diode is electrically connected to the second contact; The output end of the light detector is electrically connected to the main control module.

5. The detection circuit of the contact switch according to claim 4, characterized in that: The detection module also includes a first resistor and a second resistor; The first end of the first resistor is electrically connected to the output end of the light detector, the second end of the first resistor is electrically connected to the first end of the second resistor and the main control module respectively, and the second end of the second resistor is grounded.

6. The detection circuit of the contact switch according to claim 4, characterized in that: The detection module also includes a high voltage protection circuit; The high voltage protection circuit is electrically connected to the second contact and the cathode of the light emitting diode respectively.

7. The detection circuit of the contact switch according to claim 6, characterized in that: The high voltage protection circuit comprises a first diode, a second diode and a third diode connected in series in sequence; The first end of the first diode is electrically connected to the second end of the light emitting diode; the second end of the third diode is electrically connected to the second contact.

8. The detection circuit of the contact switch according to claim 1, characterized in that: The detection module also includes a third resistor and a first capacitor; A first end of the third resistor is electrically connected to the first contact, a second end of the third resistor is electrically connected to a first end of the first capacitor, and a second end of the first capacitor is electrically connected to the first contact.

9. The detection circuit of the contact switch according to claim 1, characterized in that: The detection module also includes a fourth resistor and a second capacitor; The fourth resistor and the second capacitor are arranged in parallel; The first end of the fourth resistor is electrically connected to the first output end and the second voltage source of the isolation power supply module respectively; the second end of the fourth resistor is grounded.

10. A wire stripping device, characterized in that: A detection circuit comprising a contact switch according to any one of claims 1 to 9; The wire stripping device further includes a conductive cutter, a conductive probe and a wire core; the conductive probe is the first contact, and the wire core is the second contact; or, the conductive probe is the second contact, and the wire core is the first contact.

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