High-voltage insulation shielding cover with hardness self-adaptive adjustment

Abstract

The invention discloses a hardness self-adaptive adjustment high-voltage insulation shielding cover which comprises a composite insulation cover body, the composite insulation cover body sequentially comprises an outer insulation layer, a middle magnetorheological elastomer interlayer and an inner attaching layer from outside to inside, and a miniature electric field sensor is embedded in the surface of the outer insulation layer and used for monitoring the intensity of a surrounding electric field in real time; the flexible electromagnetic coil is embedded in the middle magnetorheological elastomer interlayer; the intelligent induction energy storage module is integrated in a lightweight waterproof box at the top of the composite insulation cover body and comprises a magnetic field controller, a micro super capacitor, an electric field signal processor and a pressure signal converter, and the magnetic field controller is connected with the flexible electromagnetic coil through a wire; through the three-layer structure design of the composite insulation cover body and corresponding material selection, double guarantee of insulation protection and self-adaptive fitting is realized.

Description

Technical Field

[0001] This invention relates to the field of high-voltage insulating shielding technology, and specifically to a high-voltage insulating shielding with adaptive soft and hard adjustment. Background Technology

[0002] High-voltage insulating shields are key protective equipment for ensuring the safety of personnel and equipment in high-voltage power operations. They are widely used in line maintenance, equipment upkeep, and other scenarios. Their core function is to isolate high-voltage components from the surrounding environment and avoid the risk of electric shock.

[0003] However, existing high-voltage insulation shields still have many technical shortcomings: most products adopt a fixed hardness design ([1] Zhang Weidong, Li Tao, Sun Yucheng, et al. Research and application of rigid insulation shields [J]. Science and Technology Innovation Herald, 2019, 16(10): 79-80.), and the rigid structure is difficult to fit tightly with irregularly shaped high-voltage wires, connectors and other components, which easily forms insulation gaps and reduces the reliability of protection; the flexible structure (Xie Bowei, Jin Mohui, Yang Zhou, et al. Study on mechanical properties and model parameters of 3D printed TPU materials [J]. Journal of Engineering Design, 2023, 30(04): 419-428.) has good fit, but its anti-collision ability is weak during transportation and operation, and it cannot resist the deformation risk under strong electric field environment. Meanwhile, existing protective shields have limited functionality, providing only basic insulation and lacking the ability to monitor the electric field strength of the working environment in real time, thus failing to provide timely warnings of potential safety hazards caused by abnormally high electric field levels. Even some products that incorporate sensing components, such as the patent application (publication number CN216646618U) entitled "A Non-Contact Insulation Shielding Monitoring Device," do not achieve linkage between detection data and protective functions, making it difficult to quickly adjust the protective state in the face of sudden situations such as loosening of the seal or impact. Furthermore, traditional protective shields have uneven static electricity discharge effects, and static electricity accumulated during high-voltage operations can easily affect the stability of the protection. These problems all restrict the safety and efficiency of high-voltage power operations. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention aims to provide a high-voltage insulation shield with adaptive hardness adjustment, which realizes dynamic adjustment of working environment monitoring and protection status, adaptive adjustment of shield hardness, and improves the reliability of insulation protection under complex working conditions.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A high-voltage insulating shield with adaptive hardness and softness adjustment includes a composite insulating shield body. From the outside to the inside, the composite insulating shield body comprises an outer insulating layer, a middle magnetorheological elastomer interlayer, and an inner bonding layer. A micro electric field sensor is embedded on the surface of the outer insulating layer for real-time monitoring of the surrounding electric field strength. A flexible electromagnetic coil is embedded inside the middle magnetorheological elastomer interlayer and is wrapped with an insulating shielding layer. The flexible electromagnetic coil provides an adjustable magnetic field for the middle magnetorheological elastomer interlayer. An intelligent inductive energy storage module is integrated into a lightweight waterproof box on top of the composite insulating shield body. The intelligent inductive energy storage module includes a magnetic field controller, a micro supercapacitor, an electric field signal processor, and a pressure signal converter. The magnetic field controller is connected to the flexible electromagnetic coil via wires and outputs an adjustable current to change the magnetic field strength of the electromagnetic coil.

[0006] The main body of the composite insulating cover is a ring that cooperates with the conductor. An opening is provided on the ring, and the lower lip of the cover at the opening is a wave-shaped locking clamp with two clamps to form a lower lip locking device.

[0007] The outer side of the composite insulating cover is provided with head fixing ribs and tail fixing ribs.

[0008] The outer insulating layer is a nano-ceramic reinforced silicone rubber insulating layer.

[0009] The middle layer magnetorheological elastomer interlayer is made of silicone rubber matrix mixed with carbonyl iron powder particles. The middle layer magnetorheological elastomer interlayer is flexible when there is no magnetic field and gradually hardens when the magnetic field strength increases.

[0010] The inner bonding layer is a conductive polymer flexible bonding layer with conductive textures on the surface, which has both bonding properties and static electricity discharge function. The edge is equipped with a pressure sensor array to detect the bonding degree between the composite insulating cover and the component.

[0011] The micro supercapacitor is connected to the conductive texture of the inner bonding layer through conductive contacts. The conductive texture is distributed in a grid pattern and is connected to the micro supercapacitor at multiple points through multiple conductive contacts.

[0012] The electric field signal processor is electrically connected to the miniature electric field sensor of the outer insulating layer, and the pressure signal converter is electrically connected to the pressure sensing array of the inner bonding layer.

[0013] The lightweight waterproof box has a built-in miniature alarm that emits an audible and visual alarm, and the alarm frequency is set differently depending on the degree of abnormality.

[0014] The magnetic field controller achieves bidirectional signal interaction with the electric field signal processor through an electrical signal transmission line. The magnetic field controller is connected to the pressure signal converter through a shielded signal cable. The magnetic field controller is also connected to the miniature supercapacitor through a conductive line with overload protection, sending discharge and charging control commands to it.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) This invention achieves dual protection of insulation and adaptive bonding through a three-layer structure design of a composite insulating cover, including a nano-ceramic reinforced silicone rubber outer insulating layer, a middle magnetorheological elastomer interlayer, and a conductive polymer inner bonding layer. The outer insulating layer enhances high voltage resistance and mechanical stability with the help of nano-ceramic particles. The inner bonding layer eliminates bonding gaps and discharges static electricity through a grid-like conductive texture and pressure sensing array. The middle magnetorheological elastomer interlayer maintains flexible bonding when there is no magnetic field and can harden to resist impact under the action of a magnetic field. This solves the problems of poor bonding or weak deformation resistance of traditional fixed-hardness shields and improves the reliability of insulation protection under complex working conditions.

[0016] (2) This invention achieves dynamic adjustment of the working environment monitoring and protection status through the linkage of intelligent induction energy storage module with micro electric field sensor and pressure sensor array. The micro electric field sensor captures changes in electric field intensity in real time, and the pressure sensor array accurately detects the bonding pressure. After the data is analyzed by the processor, the magnetic field controller changes the magnetic field intensity by adjusting the current of the flexible electromagnetic coil, thereby controlling the hardness of the middle magnetorheological elastomer interlayer. At the same time, the micro supercapacitor forms an electrostatic shielding layer. This closed-loop mechanism of detection, analysis and adjustment solves the shortcomings of existing products that are single in function and lack linkage protection, and can respond to sudden situations such as abnormal electric field and loose bonding in a timely manner, reducing safety hazards.

[0017] (3) Through the synergistic effect of structural design, intelligent monitoring and dynamic adjustment, the present invention further optimizes the comprehensive performance of high voltage insulation protection. The high voltage resistance of the outer insulation layer provides a safe basis for monitoring and adjustment. The pressure detection of the inner bonding layer provides data support for precise adjustment. The hardness adaptive adjustment of the middle magnetorheological elastomer interlayer ensures the tightness of the bonding and the impact resistance. Combined with the sound and light alarm function of the lightweight waterproof box, a comprehensive protection system is formed. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the composite insulating cover structure according to an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the internal structure of the lightweight waterproof box according to an embodiment of the present invention.

[0021] The diagram is labeled as follows: 1. Composite insulating cover; 101. Outer insulating layer; 102. Middle magnetorheological elastomer interlayer; 103. Inner bonding layer; 1031. Conductive texture; 1032. Pressure sensor array; 2. Miniature electric field sensor; 3. Flexible electromagnetic coil; 4. Intelligent inductive energy storage module; 401. Magnetic field controller; 402. Miniature supercapacitor; 403. Electric field signal processor; 404. Pressure signal converter; 5. Lightweight waterproof box; 6. Lower lip of the cover; 7. Head fixing rib; 8. Tail fixing rib. Detailed Implementation

[0022] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below in conjunction with embodiments and accompanying drawings. However, the present invention is not limited to the embodiments described in the text.

[0023] Reference Figure 1 A high-voltage insulation shield with adaptive soft and hard adjustment includes a composite insulation shield 1. The main body of the composite insulation shield 1 is a ring that fits with the conductor. An opening is opened on one side of the ring to facilitate the quick insertion of the conductor. The lower lip 6 of the shield at the opening is a wave-shaped locking clamp to form a lower lip locking device. A head fixing rib 7 and a tail fixing rib 8 are provided on the outside of the composite insulation shield 1. The wavy contact surfaces of the two clamping plates in the lower lip locking device can increase the frictional force of contact with the conductor surface. The movable side of the clamping plate is equipped with a buckle with reverse teeth, and the fixed side is equipped with a corresponding slot. The buckle has a certain elasticity, and the reverse tooth angle is designed for one-way locking. The operator pushes the movable side clamping plate with an insulated tool such as insulated pliers to make the buckle insert into the slot. The reverse teeth gradually bite together to achieve clamping. When clamped, it can be firmly fixed to the conductor by the elastic clamping force, effectively preventing the cover from shifting due to vibration and collision during operation. The head fixing rib 7 and tail fixing rib 8 of the shielding cover are easy for high-voltage live-line working robots or operators to clamp, press the shielding cover into the conductor for installation or remove it.

[0024] Reference Figure 1 , Figure 2 , Figure 3 The composite insulating cover 1 comprises, from the outside to the inside, an outer insulating layer 101, a middle magnetorheological elastomer interlayer 102, and an inner bonding layer 103. A miniature electric field sensor 2 is embedded on the surface of the outer insulation layer 101 for real-time monitoring of the surrounding electric field strength. The outer insulation layer 101 is a nano-ceramic reinforced silicone rubber insulation layer. By uniformly dispersing nano-sized ceramic particles in the silicone rubber matrix, it retains the excellent flexibility, aging resistance and high and low temperature resistance of silicone rubber, and at the same time, it greatly improves the high voltage resistance of the outer insulation layer 101 by taking advantage of the high insulation strength and mechanical stability of nano-ceramics. It can effectively resist the electric field breakdown and corona corrosion problems commonly encountered in high voltage power operations, and is suitable for the insulation protection needs of long-term outdoor and complex working conditions.

[0025] The sensor probe of the miniature electric field sensor 2 is flush with the surface of the outer insulating layer 101, which avoids interference from the protruding structure on the operation and can capture electric field intensity data in different areas around the cover in all directions. The miniature electric field sensor 2 is electrically connected to the electric field signal processor 403 in the intelligent sensing energy storage module 4 through built-in wires, and can transmit electric field data to the processor in real time for filtering, amplification and analysis.

[0026] The flexible electromagnetic coil 3 is embedded inside the middle magnetorheological elastomer interlayer 102. The flexible electromagnetic coil 3 is wrapped with an insulating shielding layer. The flexible electromagnetic coil 3 is used to provide an adjustable magnetic field for the middle magnetorheological elastomer interlayer 102. The middle magnetorheological elastomer interlayer 102 is made of silicone rubber matrix mixed with carbonyl iron powder particles. The middle magnetorheological elastomer interlayer 102 is flexible when there is no magnetic field and gradually hardens when the magnetic field strength increases.

[0027] The miniature electric field sensor 2 is wrapped with a permalloy shielding layer with a thickness of 0.5-1mm. The insulating shielding layer of the flexible electromagnetic coil 3 adopts a double-layer structure with an inner polyimide film and an outer copper mesh shielding layer. The minimum distance between the sensor and the coil is ≥10mm to avoid magnetic field interference with detection accuracy.

[0028] The middle magnetorheological elastomer interlayer 102 uses highly elastic silicone rubber as the matrix. Micron-sized carbonyl iron powder particles are uniformly dispersed through a mixing process, with the particle size controlled to 5-20 μm, forming a stable elastic composite material structure. The volume percentage of the carbonyl iron powder particles is preferably 30%-40%, ensuring uniform particle distribution within the silicone rubber matrix without significant agglomeration, thus avoiding impact on the overall flexibility of the interlayer. It also guarantees high sensitivity of the particles to external magnetic fields, providing a sufficient magnetostrictive basis for subsequent hardness adjustment. The middle magnetorheological elastomer interlayer 102 is tightly bonded to the outer insulating layer 101 and the inner bonding layer 103. An internally embedded flexible electromagnetic coil 3 can directly apply an adjustable magnetic field to the interlayer. When the magnetic field strength changes, the carbonyl iron powder particles within the interlayer will align oriented according to the magnetic field direction, thereby altering the intermolecular forces of the silicone rubber matrix and achieving continuous and reversible adjustment of the interlayer hardness from flexible to rigid.

[0029] The inner bonding layer 103 is made of a highly flexible conductive polymer material. This material uses polyimide as a base and composite carbon nanotubes as conductive fillers, possessing excellent flexibility and elastic recovery capabilities, allowing it to tightly adhere to the surfaces of irregular components such as high-voltage wires and connectors, eliminating bonding gaps. It also has stable conductivity, providing a reliable channel for static electricity discharge. The inner surface of the inner bonding layer 103 is laser-engraved with a grid-like conductive texture 1031, with the texture spacing controlled at 2-3 mm, forming a uniformly distributed conductive network. This ensures that static electricity can be quickly and uniformly discharged through the texture, avoiding localized static accumulation that could affect insulation performance. Furthermore, the texture is connected to the micro supercapacitor 402 at multiple conductive contacts. Simultaneously, pressure sensor arrays 1032 are arranged at intervals along the circumference of the inner bonding layer 103, with 8-12 pressure sensor arrays evenly distributed along the circumference of the inner bonding layer 103. Each sensor unit uses a thin-film pressure chip with a thickness of only 0.1-0.2mm. It is attached to the contact interface between the inner bonding layer 103 and the component, which does not affect the tightness of the bonding and can collect bonding pressure data of different areas in real time, and transmit the data to the pressure signal converter 404 for processing.

[0030] The intelligent sensing energy storage module 4 is integrated into the lightweight waterproof box 5 on the top of the composite insulating cover 1. It includes a magnetic field controller 401, a micro supercapacitor 402, an electric field signal processor 403, and a pressure signal converter 404. The pressure signal converter 404 is electrically connected to the pressure sensing array 1032 of the inner bonding layer 103.

[0031] The magnetic field controller 401 achieves bidirectional signal interaction with the electric field signal processor 403 through an electrical signal transmission line. The magnetic field controller 401 is connected to the pressure signal converter 404 through a shielded signal cable. The magnetic field controller 401 is also connected to the micro supercapacitor 402 through a conductive line with overload protection, and can send discharge and charge control commands to it. The micro supercapacitor 402 has an energy storage capacity of 500-800mAh and a discharge rate of ≥2A / s, which can meet the instantaneous power requirements of the maximum 5A output current of the magnetic field controller 401, while providing a stable current of 0.1-0.3A for the electrostatic shielding layer.

[0032] The magnetic field controller 401 is connected to the flexible electromagnetic coils 3 in each area via wires. It can output an adjustable current to change the magnetic field strength of the electromagnetic coils. The output end of the magnetic field controller 401 is connected one-to-one with the flexible electromagnetic coils 3 embedded in the interlayer via multiple sets of highly insulated wires. The outer layer of the wires is wrapped with a high-voltage resistant silicone rubber insulating sleeve to meet the insulation requirements of high-voltage working environments. The wire length is precisely matched with the coil layout path to avoid redundant wires affecting the flexibility of the interlayer or the uniformity of the magnetic field. The magnetic field controller 401 has a built-in high-precision current adjustment module, which can output an adjustable current of 0-5A according to actual needs, with a current adjustment accuracy of 0.01A. By changing the current, the magnetic field strength generated by the flexible electromagnetic coils 3 is precisely controlled, thereby realizing the continuous and controllable adjustment of the hardness of the middle magnetorheological elastomer interlayer 102 from flexible to rigid.

[0033] The flexible electromagnetic coil 3 adopts a spiral uniform embedding method, with the coil spacing controlled at 5-8mm. It is divided into 3-4 independent coil groups in the middle layer magnetorheological elastomer interlayer 102 according to the circumferential direction of the ring. Each coil group in the middle layer is connected to the magnetic field controller 401 by an independent wire to ensure uniform magnetic field coverage. The micro supercapacitor 402 is equipped with an inductive charging module, which obtains weak electrical energy from the high-voltage line through electromagnetic induction. The inductive charging module includes a transmitter module and a receiver module. Its core principle is the phenomenon of electromagnetic induction, that is, the alternating magnetic field generated by the transmitter coil induces the current in the receiver coil to realize contactless power transmission. The inductive charging module is a mature existing technology, so the components and control system are not described in detail here.

[0034] The lightweight waterproof box 5 has a built-in miniature alarm that emits an audible and visual alarm. The alarm frequency is set differently depending on the degree of abnormality. The miniature alarm is electrically connected to the magnetic field controller 401, which can send control signals to the miniature alarm. A transparent observation window can be opened at the location of the miniature alarm in the lightweight waterproof box 5 to facilitate the observation of the alarm status later.

[0035] The specific operation process of this invention is as follows: Based on the high-voltage conductor diameter in the range of 10-50mm, the wavy lower lip locking clamp at the opening of the composite insulation cover 1 is opened appropriately, the cover is aligned with the target high-voltage conductor from the opening and inserted, the position is adjusted so that the inner bonding layer 103 initially contacts the conductor surface, the lower lip locking clamp is clamped, and the cover is stabilized by the friction and elastic clamping force of the wavy contact surface. The head fixing rib 7 and the tail fixing rib 8 are used in conjunction with the live-line working robot or manual clamping and positioning.

[0036] Normal operating condition: After installation, the equipment starts up. The miniature electric field sensor 2 and the pressure sensor array 1032 work synchronously. When the electric field strength is ≤50kV / m and the bonding pressure is 0.1-0.3MPa, the magnetic field controller 401 outputs a current of 0-1A, the flexible electromagnetic coil 3 generates a magnetic field of 0-50mT, the middle layer magnetorheological elastomer interlayer 102 maintains a flexible state with a Shore hardness of 30-40 degrees, the miniature supercapacitor 402 stores energy normally, and the miniature alarm does not start.

[0037] Collision and impact scenario: When the pressure sensor array 1032 detects a pressure surge exceeding 0.3MPa, the signal is processed by the pressure signal converter 404 and transmitted to the magnetic field controller 401. The magnetic field controller 401 immediately outputs a 3-5A current, generating a 150-300mT magnetic field, hardening the interlayer to a Shore hardness D of 40-50 degrees. At the same time, the miniature supercapacitor 402 prioritizes power supply to the magnetic field controller 401, and after a delay of 0.05s, it powers the electrostatic shielding layer. The miniature alarm emits an audible and visual alarm at 1-3Hz according to the impact intensity.

[0038] Electric field anomaly scenario: When the miniature electric field sensor 2 detects a slight anomaly in electric field strength of 50-80kV / m, the magnetic field controller 401 outputs a current of 1-3A to generate a magnetic field of 50-150mT, and the interlayer hardness is adjusted to Shore A hardness of 60-80 degrees; when the electric field strength is >80kV / m and there is a severe anomaly, a current of 3-5A is output, the interlayer hardens to a rigid state, the miniature alarm emits a 3-5Hz audible and visual alarm, and the electrostatic shielding layer continues to work.

[0039] In cases of loosening: When the pressure sensor array 1032 detects a pressure of <0.1MPa, the signal is processed and transmitted to the magnetic field controller 401. The controller then reduces the current of the coil group in the corresponding area by 0-1A to maintain the hardness of the interlayer in that area at Shore A 30-40 degrees, thereby enhancing flexibility to fill the gap. The miniature alarm emits a 1Hz low-frequency audible and visual alarm to prompt the operator to check the fixation status.

[0040] The present invention has been described by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A high-voltage insulating shield with adaptive soft and hard adjustment, characterized in that, include: The composite insulating cover (1) consists of an outer insulating layer (101), a middle magnetorheological elastomer interlayer (102), and an inner bonding layer (103) from the outside to the inside. A micro electric field sensor (2) is embedded on the surface of the outer insulating layer (101) for real-time monitoring of the surrounding electric field strength. The flexible electromagnetic coil (3) is embedded inside the middle layer magnetorheological elastomer interlayer (102). The flexible electromagnetic coil (3) is wrapped with an insulating shielding layer. The flexible electromagnetic coil (3) is used to provide an adjustable magnetic field for the middle layer magnetorheological elastomer interlayer (102). The middle layer magnetorheological elastomer interlayer (102) automatically adjusts its own hardness according to the adjustable magnetic field. The intelligent inductive energy storage module (4) is integrated into the lightweight waterproof box (5) on the top of the composite insulating cover (1). The intelligent inductive energy storage module (4) includes a magnetic field controller (401), a micro supercapacitor (402), an electric field signal processor (403), and a pressure signal converter (404). The magnetic field controller (401) is connected to the flexible electromagnetic coil (3) through a wire and outputs an adjustable current to change the magnetic field strength of the electromagnetic coil.

2. The high-voltage insulating shield with adaptive soft and hard adjustment according to claim 1, characterized in that: The main body of the composite insulating cover (1) is a ring that cooperates with the conductor. An opening is provided on the ring. The lower lip (6) of the cover at the opening is a wave-shaped locking clamp to form a lower lip locking device.

3. The high-voltage insulation shielding cover with adaptive soft and hard adjustment according to claim 1, characterized in that: The composite insulating cover (1) is provided with a head fixing rib (7) and a tail fixing rib (8) on the outside.

4. The high-voltage insulation shielding cover with adaptive soft and hard adjustment according to claim 1, characterized in that: The outer insulating layer (101) is a nano-ceramic reinforced silicone rubber insulating layer.

5. A high-voltage insulating shield with adaptive soft and hard adjustment according to claim 1, characterized in that: The middle layer magnetorheological elastomer interlayer (102) is made of silicone rubber matrix mixed with carbonyl iron powder particles. The middle layer magnetorheological elastomer interlayer (102) is flexible when there is no magnetic field and gradually hardens when the magnetic field strength increases.

6. A high-voltage insulating shield with adaptive soft and hard adjustment according to claim 1, characterized in that: The inner bonding layer (103) is a conductive polymer flexible bonding layer with conductive texture (1031) on the surface, which has both bonding properties and static electricity discharge function; the edge is provided with a pressure sensor array (1032) to detect the bonding degree between the composite insulating cover (1) and the component.

7. A high-voltage insulating shield with adaptive soft and hard adjustment according to claim 6, characterized in that: The micro supercapacitor (402) is connected to the conductive texture (1031) of the inner bonding layer (103) through conductive contacts. The conductive texture (1031) is distributed in a grid pattern and is connected to the micro supercapacitor (402) at multiple points through multiple conductive contacts.

8. A high-voltage insulating shield with adaptive soft and hard adjustment according to claim 6, characterized in that: The electric field signal processor (403) is electrically connected to the miniature electric field sensor (2) of the outer insulating layer (101), and the pressure signal converter (404) is electrically connected to the pressure sensing array (1032) of the inner bonding layer (103).

9. A high-voltage insulating shield with adaptive soft and hard adjustment according to claim 1, characterized in that: The lightweight waterproof box (5) has a built-in miniature alarm that emits an audible and visual alarm, and the alarm frequency is set differently depending on the degree of abnormality.

10. A high-voltage insulating shield with adaptive soft and hard adjustment according to claim 1, characterized in that: The magnetic field controller (401) achieves bidirectional signal interaction with the electric field signal processor (403) through an electrical signal transmission line. The magnetic field controller (401) is connected to the pressure signal converter (404) through a shielded signal cable. The magnetic field controller (401) is also connected to the micro supercapacitor (402) through a conductive line with overload protection, and sends discharge and charging control commands to it.

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