A waterproof live-line detection device and method based on non-contact induction technology

Abstract

The application belongs to the technical field of electricity measurement, and particularly relates to a waterproof live wire detection device and method based on non-contact induction technology. The design of the extension arm enables the main induction coil to be flexibly adjusted in position. Through the driving motor and the synchronous transmission belt system, the swing angle of the extension arm can be accurately controlled, so that the main induction coil is always in the best position during the detection process, and the stability and accuracy of the detection are improved. In addition to the main induction coil and the auxiliary coil, the paddle surface of the device is also provided with a conductive coating. Through high-speed rotation cutting of the magnetic field, the magnetic field strength around the electric wire can be detected. This multi-level and multi-functional detection mode enables the device not only to detect the electric field, but also to judge the existence of the current through the magnetic field strength, greatly expanding the application range and function of the device.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electric measurement, and particularly relates to a waterproof live wire detection device and method based on non-contact induction technology. BACKGROUND

[0002] The existing live wire detection device mainly relies on handheld or fixed induction equipment. These devices have multiple shortcomings in actual application. The handheld device needs to be operated by the detection personnel at close range, has the risk of electric shock, and has a limited detection range, making it difficult to use in high altitude, narrow space or water immersion environment. Although the fixed device can provide certain safety protection, its detection position is fixed, and it has poor flexibility, and cannot adapt to complex and variable field environments. In the prior art, the induction coil is usually fixed at one position, and the detection range is limited, and the position cannot be flexibly adjusted. SUMMARY

[0003] The purpose of the present application is to provide a waterproof live wire detection device and method based on non-contact induction technology to at least solve one of the problems in the prior art.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0005] A waterproof live wire detection device based on non-contact induction technology, comprising a support frame, four parallelly arranged hoisting rods are fixedly installed on the support frame, a landing gear is fixed to the bottom end of each hoisting rod, a stable mounting frame is fixed between adjacent two hoisting rods, an auxiliary coil is arranged at the middle part of the support frame, a T-shaped frame is fixedly arranged on each stable mounting frame, an extension arm is movably installed on the T-shaped frame, a support pipe is fixed to the end of the extension arm away from the T-shaped frame, and a main induction coil is arranged around the support pipe.

[0006] Preferably, four machine arms are fixedly arranged on the support frame in a detachable manner, a brushless motor is fixed on each machine arm, and a paddle is fixed to the output shaft of the brushless motor.

[0007] Preferably, a first reinforcing plate and a second reinforcing plate are fixedly installed on the T-shaped frame, a top line reel and a bottom line reel are rotatably installed between the opposite surfaces of the first reinforcing plate and the second reinforcing plate, a top pulley and a bottom pulley are rotatably installed on the first reinforcing plate, the top pulley and the top line reel are fixedly and synchronously rotated through a rotating shaft, the bottom pulley and the bottom line reel are fixedly and synchronously rotated through a rotating shaft, and the bottom pulley and the top pulley are transmissionally connected through a synchronous transmission belt.

[0008] Preferably, a pull rope is wound on the top line reel and the bottom line reel, the directions in which the pull ropes are wound on the top line reel and the bottom line reel are opposite, and one end of each of the pull ropes wound on the top line reel and the bottom line reel is fixed to the extension arm.

[0009] Preferably, a limiting disc is fixed on the second reinforcing plate, and an oscillating block is rotatably installed in the limiting disc and synchronously rotates with the bottom reel through a rotating shaft.

[0010] Preferably, an obtuse-angle groove is formed in the oscillating block, two extrusion limiting columns are symmetrically lapped in the obtuse-angle groove, an elastic rubber ring is arranged between the two extrusion limiting columns, the two extrusion limiting columns are driven to contact with the inner wall of the limiting disc, the extrusion limiting columns are in sliding frictional engagement with the limiting disc, and a driving rod is lapped and arranged on the opposite faces of the two extrusion limiting columns, and a gap is formed between the driving rod and the obtuse-angle groove.

[0011] Preferably, a driving turntable is rotatably installed on the side face of the oscillating block, a buckle cover is fixedly installed on the limiting disc and is in rotational engagement with the driving turntable, a driving motor is fixedly installed on the buckle cover and is in fixed engagement with the driving turntable, and the two driving rods are fixed on the driving turntable.

[0012] Preferably, the device further comprises three NPN triodes, the base of the first NPN triode is connected with the emitter of the second NPN triode, the base of the second NPN triode is connected with the emitter of the third NPN triode, and the base of the third NPN triode is connected with the auxiliary coil and / or the main induction coil.

[0013] Preferably, the collectors of the second NPN triode and the third NPN triode are connected with the positive electrode of a 9V DC power supply, the positive electrode of the 9V DC power supply is also connected with the collector of the first NPN triode, and a constant resistor R1 and a constant resistor R2 are arranged in series in the connection path, the positive electrode end of the constant resistor R2 is connected with the base of the fourth NPN triode, and the negative electrode end of the constant resistor R2 is connected with the emitter of the fourth NPN triode, for providing a positive bias trigger voltage for the fourth NPN triode.

[0014] Preferably, the collector of the fourth NPN triode is connected with the positive electrode of a 12V DC power supply, an alarm is arranged in series in the connection path, the emitter of the first NPN triode is connected with the negative electrode of the 9V DC power supply, and the emitter of the fourth NPN triode is connected with the negative electrode of the 12V DC power supply.

[0015] An operation method of the waterproof electric charge detection device, comprising the following steps:

[0016] According to the space to be detected and the specific position to be detected, the driving motor is driven to drive the driving turntable to rotate; the driving turntable drives the driving rods to rotate, the driving rods drive the oscillating block to rotate through the obtuse-angle groove; the oscillating block drives the bottom reel and the bottom reel to rotate, and then drives the top reel and the top reel to rotate through the synchronous transmission belt, so as to adjust the position of the main induction coil.

[0017] When the main induction coil and / or close to the electric field, the induced current is generated; the induced current flows through the series NPN triode amplification, flows into the negative pole of 9V power supply; at the same time, the voltage of the fixed resistance R2 in the collector direction of the first NPN triode is raised; when the potential difference of the fixed resistance R2 is greater than the positive bias trigger conduction voltage of the fourth NPN triode base and emitter, the collector and emitter of the fourth NPN triode are turned on, and the alarm works.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] (1) The design of the extension arm of the present application enables the main induction coil to be flexibly adjusted in position. By driving the motor and the synchronous transmission belt system, the swing angle of the extension arm can be accurately controlled, thereby ensuring that the main induction coil is always in the optimal position during detection, improving the stability and accuracy of detection.

[0020] (2) In addition to the main induction coil and the auxiliary coil, the paddle surface of the device is also provided with a conductive coating, which can detect the magnetic field strength around the electric wire by high-speed rotation cutting magnetic field. This multi-level and multi-functional detection method enables the device not only to detect the electric field, but also to judge the existence of current through the magnetic field strength, greatly expanding the application range and function of the device;

[0021] (3) The present application adopts modular design, and each component such as the T-shaped frame, the extension arm and the brushless motor can be easily disassembled and replaced. Different numbers of T-shaped frames can be installed on the stable mounting frame according to needs, providing high flexibility and adaptability. In addition, the structure design of the whole device is simple and clear, easy to maintain and maintain, reducing the failure rate and maintenance cost that may be encountered during use. BRIEF DESCRIPTION OF DRAWINGS

[0022] The drawings accompanying the specification of this application serve to provide further understanding of the present application, and the illustrative embodiments of the present application and their descriptions serve to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0023] Figure 1 is a schematic diagram of the overall structure of the present application;

[0024] Figure 2 is a T-shaped frame installation position diagram of the present application;

[0025] Figure 3 is a schematic diagram of the structure of the synchronous transmission belt of the present application;

[0026] Figure 4 is a schematic diagram of the support pipe structure of the present application;

[0027] Figure 5Structure schematic diagram of the invention at the buckle cover;

[0028] Figure 6 Structure schematic diagram of the invention at the buckle cover; Figure 5 Structure schematic diagram of the invention at the buckle cover;

[0029] Figure 7 Structure schematic diagram of the invention at the buckle cover;

[0030] Figure 8 Structure schematic diagram of the invention at the buckle cover;

[0031] Figure 9 Structure schematic diagram of the invention at the buckle cover.

[0032] In the figure: 101-support frame; 102-assistant coil; 103-arm; 104-brushless motor; 105-paddle; 106-hoisting rod; 107-stable mounting frame; 108-landing gear; 109-T-shaped frame; 110-first reinforcing plate; 111-bottom pulley; 112-top pulley; 113-synchronous transmission belt; 114-top reel; 115-bottom reel; 116-second reinforcing plate; 117-extension arm; 118-guy rope; 119-support pipe; 120-main induction coil; 121-limiting disc; 122-driving turntable; 123-buckle cover; 124-driving motor; 125-oscillating block; 126-obtuse angle groove; 127-extrusion limiting column; 128-poking rod; 129-elastic rubber ring. DETAILED DESCRIPTION

[0033] The application will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0034] The following detailed description is exemplary and is intended to provide further details of the present application. Unless otherwise specified, all technical terms used in the present application have the same meanings as those generally understood by those skilled in the art. The terms used in the present application are only for the purpose of describing the specific embodiments and are not intended to limit the exemplary embodiments according to the present application.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0036] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and do not connote or imply relative importance or a number of the indicated technical features. Thus, features with "first", "second", "third" designations can include one or more of the features explicitly or implicitly. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more. In the description of the present application, it should be noted that unless otherwise explicitly stated and limited, the terms "mounting", "connecting", "connection" should be interpreted broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] The technical solutions of the present application will be further illustrated below in combination with the accompanying drawings Figures 1-9 The technical solutions of the present application will be further illustrated below in combination with the accompanying drawings

[0038] The present application provides a kind of waterproof belt electric detection device based on non-contact induction technology, including support frame 101, four parallelly arranged hanger rods 106 are fixedly installed on support frame 101, the bottom end of each hanger rod 106 is fixed with landing gear 108, two adjacent hanger rods 106 are fixed with stable mounting frame 107, the middle part of support frame 101 is equipped with auxiliary coil 102, each stable mounting frame 107 can be fixed with T-shaped frame 109 with ease of disassembly, T-shaped frame 109 is movably installed with extension arm 117, one end of extension arm 117 away from T-shaped frame 109 is fixed with support tube 119, main induction coil 120 is arranged around on support tube 119, wherein main induction coil 120 and auxiliary coil 102 can detect whether there is electric field around.

[0039] Four machine arms 103 are fixed on support frame 101 in a manner convenient to disassemble, each machine arm 103 is fixed with brushless motor 104, and the output shaft of brushless motor 104 is fixed with paddle 105.

[0040] First reinforcing plate 110 and second reinforcing plate 116 are fixedly installed on T-shaped frame 109, top reel 114 and bottom reel 115 are rotatably installed between opposite surfaces of first reinforcing plate 110 and second reinforcing plate 116, wherein top pulley 112 and bottom pulley 111 are also rotatably installed on first reinforcing plate 110, wherein top pulley 112 and top reel 114 are fixedly and synchronously rotated by rotating shaft, bottom pulley 111 and bottom reel 115 are fixedly and synchronously rotated by rotating shaft, and bottom pulley 111 and top pulley 112 are drivingly connected by synchronous transmission belt 113.

[0041] The pull cable 118 is wound on the top line reel 114 and the bottom line reel 115, the directions of winding the pull cable 118 on the top line reel 114 and the bottom line reel 115 are opposite, and one end of the pull cable 118 wound on the top line reel 114 and the bottom line reel 115 is fixed with the extension arm 117.

[0042] The second reinforcing plate 116 is fixed with a limiting disc 121, the limiting disc 121 is rotatably installed with a swing block 125, and the swing block 125 is fixedly and synchronously rotated with the bottom line reel 115 through a rotating shaft.

[0043] The swing block 125 is provided with an obtuse angle groove 126, two extrusion limiting columns 127 are symmetrically overlapped in the obtuse angle groove 126, an elastic rubber ring 129 is arranged between the two extrusion limiting columns 127, the two extrusion limiting columns 127 are driven to contact with the inner wall of the limiting disc 121, the extrusion limiting column 127 is in sliding frictional cooperation with the limiting disc 121, and the opposite surfaces of the two extrusion limiting columns 127 are both overlapped with a driving rod 128, and a gap exists between the driving rod 128 and the obtuse angle groove 126.

[0044] The side surface of the swing block 125 is rotatably installed with a driving turntable 122, the limiting disc 121 is fixedly installed with a buckle cover 123, the buckle cover 123 is rotatably cooperated with the driving turntable 122, the buckle cover 123 is fixedly installed with a driving motor 124, the output shaft of the driving motor 124 is fixedly cooperated with the driving turntable 122, and the two driving rods 128 are fixed on the driving turntable 122.

[0045] The three NPN triodes are further included, the base of the first NPN triode is connected with the emitter of the second NPN triode, the base of the second NPN triode is connected with the emitter of the third NPN triode, and the base of the third NPN triode is connected with the auxiliary coil 102 and / or the main induction coil 120. The collectors of the second NPN triode and the third NPN triode are both connected with the positive electrode of a 9V direct current power supply, and the positive electrode of the 9V direct current power supply is also connected with the collector of the first NPN triode, and a constant resistance R1 and a constant resistance R2 are arranged in series in the connection path; the positive electrode end of the constant resistance R2 is connected with the base of the fourth NPN triode, and the negative electrode end of the constant resistance R2 is connected with the emitter of the fourth NPN triode, for providing a positive bias trigger voltage for the fourth NPN triode. The collector of the fourth NPN triode is connected with the positive electrode of a 12V direct current power supply, and an alarm is arranged in series in the connection path, the emitter of the first NPN triode is connected with the negative electrode of the 9V direct current power supply, and the emitter of the fourth NPN triode is connected with the negative electrode of the 12V direct current power supply.

[0046] According to the actual situation, a proper number of T-shaped frames 109 are selected and installed on the stable mounting frame 107, and the brushless motor 104 is started. The output shaft of the brushless motor 104 drives the paddle 105 to rotate (the rotation speed of the four brushless motors 104 needs to be controlled by the flight control, and the battery can also be installed on the stable mounting frame 107). Through the speed matching of the four paddles 105, the main induction coil 120 is moved to the place where the charged object needs to be detected. It should be noted that the auxiliary coil 102 is generally not used, and only the main induction coil 120 is needed, so in order to reduce the overall weight, the auxiliary coil 102 can be removed. The auxiliary coil 102 has the same function as the main induction coil 120, and its main purpose is to extend the arm 117 in actual operation, which cannot enter the small space to be measured.

[0047] According to the space to be measured and the specific position to be measured, the swing of the extension arm 117 is appropriately adjusted, so that the main induction coil 120 can be closer to the measurement point. Specifically, by controlling the rotation of the output shaft of the driving motor 124, the output shaft of the driving motor 124 drives the driving turntable 122 to rotate, the driving turntable 122 drives the toggle lever 128 to rotate, the rotation of the toggle lever 128 drives the swing block 125 to rotate through the obtuse angle groove 126 (because the toggle lever 128 is in the obtuse angle groove 126), the rotation of the swing block 125 drives the bottom pulley 111 to rotate (including the bottom reel 115), then the top pulley 112 is driven to rotate through the synchronous transmission belt 113, the top pulley 112 drives the top reel 114 to rotate, at this time the top reel 114 and the bottom reel 115 will rotate synchronously, because the directions of the pull ropes 118 wound on the top reel 114 and the bottom reel 115 are opposite, and the top reel 114 and the bottom reel 115 rotate in the same direction, therefore if the pull rope 118 on the top reel 114 is in the state of paying out, the pull rope 118 on the bottom reel 115 is in the state of taking up, through the pulling of the two pull ropes 118 on the extension arm 117, the extension arm 117 is swung on the T-shaped frame 109, thereby adjusting the position of the main induction coil 120. The extension arm 117 will drive the top reel 114 and the bottom reel 115 to rotate through the pull ropes 118 under the action of vibration or gravity, at this time in order to prevent the top reel 114 and the bottom reel 115 from rotating without the driving of the driving motor 124, it is necessary to prevent the swing block 125 from rotating, if the obtuse angle groove 126 rotates, the swing block 125 will rotate and drive the internal extrusion limiting column 127 to move, because the two extrusion limiting columns 127 are symmetrically arranged, therefore no matter which direction the obtuse angle groove 126 rotates, one of the extrusion limiting columns 127 will always move towards the direction of the corresponding toggle lever 128 under the friction force of the limiting disc 121, at this time the space between the limiting disc 121 and the obtuse angle groove 126 in this direction is reduced, at this time the limiting disc 121 and the obtuse angle groove 126 will extrude the extrusion limiting column 127, thereby the extrusion limiting column 127 is stuck between the limiting disc 121 and the obtuse angle groove 126, therefore the obtuse angle groove 126 and the swing block 125 cannot rotate, but when the toggle lever 128 acts as the driving part, the extrusion limiting column 127 in the stuck state will be pushed to the direction close to the elastic rubber ring 129, at this time the limiting disc 121 and the obtuse angle groove 126 no longer extrude the extrusion limiting column 127, and the other extrusion limiting column 127 will also move towards the direction of the elastic rubber ring 129 under the friction force of the limiting disc 121, therefore it will not be stuck. Therefore the driving motor 124 does not need to be always in the starting state to maintain the swing angle of the extension arm 117, thereby the position of the main induction coil 120 is more stable.

[0048] When the main induction coil 120 and / or the auxiliary coil 102 is close to the electric field, an induced current will be generated on the main induction coil 120 and / or the auxiliary coil 102, and since the main induction coil 120 and / or the auxiliary coil 102 is connected to the base of the third NPN transistor, and because the collector of the third NPN transistor has a voltage of 9V, the emitter of the third NPN transistor will amplify the current at this time. Since the NPN transistors are connected in series, the three series-connected NPN transistors will amplify the current at the emitter of the previous NPN transistor, until the current at the emitter of the first NPN transistor flows into the negative pole of the 9V power supply. At the same time, the voltage across the fixed resistor R2 in the direction of the collector of the first NPN transistor will increase, so the greater the induced current at the auxiliary coil 102 and / or the main induction coil 120, the greater the potential difference between the two points of the fixed resistor R2. When the potential difference between the two points of the fixed resistor R2 (so the fixed resistor R1 and the fixed resistor R2 are connected in series to act as a voltage divider to reduce the voltage across the fixed resistor R2. Generally, a positive bias voltage of 0.7V provided by the base of the NPN transistor can make the collector and emitter of the NPN transistor conductive) is greater than the positive bias trigger on voltage of the base and emitter of the fourth NPN transistor, the collector and emitter of the fourth NPN transistor are turned on, and the alarm works.

[0049] In addition, the surface of the paddle 105 is provided with two conductive coatings with different conductive resistivities, and one end of the two conductive coatings is electrically connected (that is, the two parallel conductive coating lines form a U shape). At this time, when the paddle 105 rotates at high speed, the two conductive coating coils will cut the magnetic field (especially around the electric wire, the electric wire is buried in the ground, and there will be a magnetic field around it). Since the rotational speed of the paddle 105 is known, the strength of the magnetic field can be known by measuring the voltage across the two ends of the two conductive coatings that are not connected together, and whether there is a current around can be determined.

[0050] In an optional embodiment, a waterproof live wire detection device based on non-contact induction technology, the operation method comprises:

[0051] I. Device preparation

[0052] Start the brushless motor 104, control the rotational speed of the four brushless motors 104 through the flight control, make the paddle 105 rotate, and thus make the whole device fly. Through the speed matching of the four paddles 105, the flight direction and height of the device are adjusted, and the main induction coil 120 is moved to the place where the live object needs to be detected.

[0053] According to the space to be tested and the specific location to be tested, the rotation of the output shaft of the driving motor 124 is controlled to drive the driving turntable 122 to rotate. The driving turntable 122 drives the toggle lever 128 to rotate, and the toggle lever 128 drives the swing block 125 to rotate through the obtuse angle groove 126. The rotation of the swing block 125 drives the bottom pulley 111 including the bottom reel 115 to rotate, and then drives the top pulley 112 including the top reel 114 to rotate through the synchronous transmission belt 113. Since the directions of the pull cord 118 wound on the top reel 114 and the bottom reel 115 are opposite, the rotation of the top reel 114 and the bottom reel 115 causes the pull cord 118 to pull the extension wall 117, so as to adjust the swing angle of the extension wall 117 on the T-shaped frame 109, and further adjust the position of the main induction coil 120.

[0054] When the main induction coil 120 and / or the auxiliary coil 102 are close to the electric field, they will generate an induced current. The induced current flows into the negative electrode of the 9V power supply after being amplified by the series-connected NPN triode. At the same time, the voltage across the fixed resistor R2 in the collector direction of the first NPN triode will rise. When the potential difference across R2 is greater than the positive bias trigger conduction voltage of the base and emitter of the fourth NPN triode, the collector and emitter of the fourth NPN triode are turned on, and the alarm works.

[0055] Additional function: magnetic field strength detection. When the paddle (105) rotates at high speed, the two conductive coatings on its surface will cut the magnetic field. Since the conductive resistivity of the two conductive coatings is different, the strength of the magnetic field can be judged by measuring the voltage across the two ends where the two conductive coatings are not connected together. Then, whether there is a current around can be judged according to the strength of the magnetic field.

[0056] After the detection is completed, the device returns to the starting point or the specified position through the flight control device. The brushless motor (104) is turned off, and the device is landed and recovered.

[0057] Please note that the above method is for reference only, and actual operation should be adjusted according to the specific device and site environment. At the same time, before operation, the operator should ensure that he has the corresponding qualifications and skills, and strictly follow the safety operation procedures. In the description of the specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0058] It is apparent that the application can be carried out by other embodiments that do not depart from the spirit or essential characteristics thereof. Thus, the embodiments disclosed in this specification are to be considered in all respects as illustrative and not restrictive, and all changes coming within the meaning and equivalency range of the application are intended to be embraced therein.

Claims

1. A waterproof and charged detection device based on non-contact sensing technology, characterized in that: It comprises a support frame (101), four parallel hanging rods (106) are fixedly mounted on the support frame (101), a landing gear (108) is fixed at the bottom end of each hanging rod (106), and a stable mounting frame (107) is fixed between two adjacent hanging rods (106); An auxiliary coil (102) is provided in the middle of the support frame (101); A T-shaped frame (109) is fixed on each stable mounting frame (107) so as to be easily disassembled, an extension arm (117) is movably mounted on the T-shaped frame (109), a support tube (119) is fixed to one end of the extension arm (117) away from the T-shaped frame (109), and a main induction coil (120) is arranged around the support tube (119); The main induction coil (120) and the auxiliary coil (102) are both capable of detecting whether there is an electric field in the surrounding area; A first reinforcing plate (110) and a second reinforcing plate (116) are fixedly mounted on the T-shaped frame (109), and a top wire drum (114) and a bottom wire drum (115) are rotatably mounted between opposite surfaces of the first reinforcing plate (110) and the second reinforcing plate (116), wherein a top pulley (112) and a bottom pulley (111) are also rotatably mounted on the first reinforcing plate (110), wherein the top pulley (112) and the top wire drum (114) are fixed and rotated synchronously via a rotating shaft, and the bottom pulley (111) and the bottom wire drum (115) are fixed and rotated synchronously via a rotating shaft, and the bottom pulley (111) and the top pulley (112) are connected to each other via a synchronous transmission belt (113); A pull rope (118) is wound around the top wire drum (114) and the bottom wire drum (115), and the directions of the pull ropes (118) wound around the top wire drum (114) and the bottom wire drum (115) are opposite, and one end of the pull ropes (118) wound around the top wire drum (114) and the bottom wire drum (115) is fixed to the extension arm (117); A limiting disk (121) is fixed on the second reinforcing plate (116), a swing block (125) is rotatably mounted inside the limiting disk (121), and the swing block (125) and the bottom wire drum (115) are fixed and rotate synchronously via a rotating shaft; An obtuse-angled groove (126) is provided on the swing block (125), and two extrusion limiting columns (127) are symmetrically overlapped in the obtuse-angled groove (126). An elastic rubber ring (129) is provided between the two extrusion limiting columns (127), driving the two extrusion limiting columns (127) to contact the inner wall of the limiting disk (121). The extrusion limiting columns (127) and the limiting disk (121) are slidingly frictionally engaged, and a toggle rod (128) is overlapped on the opposite back surfaces of the two extrusion limiting columns (127), and a gap is provided between the toggle rod (128) and the obtuse-angled groove (126); A driving turntable (122) is rotatably mounted on the side of the swing block (125), a buckle cover (123) is fixedly mounted on the limiting disk (121), the buckle cover (123) and the driving turntable (122) are rotationally matched, a driving motor (124) is fixedly mounted on the buckle cover (123), an output shaft of the driving motor (124) is fixedly matched with the driving turntable (122), and two toggle rods (128) are fixed on the driving turntable (122).

2. The waterproof and charged detection device based on non-contact induction technology according to claim 1 is characterized in that: Four arms (103) are fixed on the support frame (101) in a manner that is easy to disassemble. A brushless motor (104) is fixed on each arm (103), and a blade (105) is fixed on the output shaft of the brushless motor (104).

3. The waterproof and charged detection device based on non-contact sensing technology according to claim 1 is characterized in that: It also includes three NPN transistors, the base of the first NPN transistor is connected to the emitter of the second NPN transistor, the base of the second NPN transistor is connected to the emitter of the third NPN transistor, and the base of the third NPN transistor is connected to the auxiliary coil (102) and / or the main induction coil (120).

4. The waterproof and charged detection device based on non-contact induction technology according to claim 3 is characterized in that: The collectors of the second NPN transistor and the third NPN transistor are both connected to the positive pole of a 9V DC power supply. At the same time, the positive pole of the 9V DC power supply is also connected to the collector of the first NPN transistor, and a fixed resistor R1 and a fixed resistor R2 are arranged in series on the connection path; the positive end of the fixed resistor R2 is connected to the base of the fourth NPN transistor, and the negative end of the fixed resistor R2 is connected to the emitter of the fourth NPN transistor, which is used to provide a forward-biased trigger voltage to the fourth NPN transistor.

5. An operating method of the waterproof and charged detection device according to claim 4, characterized in that: The steps include: According to the space to be measured and the specific position to be measured, the driving turntable (122) is driven to rotate by the driving motor (124); the driving turntable (122) drives the toggle rod (128) to rotate, and the toggle rod (128) drives the swing block (125) to rotate through the obtuse angle groove (126); the swing block (125) drives the bottom pulley (111) and the bottom wire drum (115) to rotate, and then drives the top pulley (112) and the top wire drum (114) to rotate through the synchronous transmission belt (113), thereby adjusting the position of the main induction coil (120); When the main induction coil (120) and / or (the auxiliary coil 102) are close to the electric field, an induced current is generated; the induced current is amplified by the series-connected NPN transistors and flows into the negative electrode of the 9V power supply; at the same time, the voltage across the fixed resistor R2 in the collector direction of the first NPN transistor increases; when the potential difference across the fixed resistor R2 is greater than the forward-biased trigger turn-on voltage of the base and emitter of the fourth NPN transistor, the collector and emitter of the fourth NPN transistor are turned on, and the alarm works.

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