Electrostatic sensor and static eliminating device

Abstract

The invention relates to an electrostatic sensor and an electrostatic elimination device, in particular to the technical field of electrostatic detection, by arranging a shell, a PCBA board and an electrostatic detection mechanism, when the electrostatic sensor is used, an installation space is formed in the shell, an installation opening communicated with the installation space is formed in the shell, and the PCBA board is installed in the installation space; the PCBA board is provided with the mounting port, the mounting hole is formed in the position, corresponding to the mounting port, of the PCBA board, the electrostatic detection mechanism is mounted in the mounting hole, the electrostatic detection mechanism is arranged towards the mounting port, a modular structure is adopted for mounting, the assembly complexity of discrete components can be reduced, and the assembly efficiency is improved. The complexity of the whole structure is simplified, a hole matching installation mode is adopted, the installation space can be reduced, and the miniaturization function of the electrostatic sensor is ensured.

Description

Technical Field

[0001] This invention relates to the field of electrostatic detection technology, and in particular to an electrostatic sensor and an electrostatic elimination device. Background Technology

[0002] With the rapid development of the Internet of Things and wearable devices, electrostatic sensor technology is being used more and more widely in smart wearable devices. As an important sensing element, electrostatic sensors can realize the real-time detection and monitoring of static electricity in the human body or environment.

[0003] Currently, electrostatic sensors typically employ discrete component assembly for electrostatic detection. A typical electrostatic sensor includes multiple components such as independent detection electrodes, a signal processing circuit board, and an external protective housing. The detection electrodes are responsible for sensing electrostatic signals, while the signal processing circuit amplifies, filters, and converts the acquired electrostatic signals, ultimately outputting a recognizable digital signal. In existing technologies, the electrostatic detection mechanism and the circuit board are usually electrically connected via wires or plugs, requiring a significant amount of installation space to accommodate the various independent components.

[0004] However, in the current technology for electrostatic detection, the traditional electrostatic sensors used adopt a discrete component assembly method, which results in a complex overall structure. The connection method between components increases the assembly difficulty and failure risk, while occupying a large installation space, making it difficult to meet the miniaturization requirements of electrostatic sensors. Summary of the Invention

[0005] The main objective of this invention is to propose an electrostatic sensor and an electrostatic elimination device, which aims to solve the technical problem that the traditional electrostatic sensors used in electrostatic detection adopt a discrete component assembly method, resulting in a complex overall structure. The connection method between components increases the assembly difficulty and failure risk, while occupying a large installation space, making it difficult to meet the technical requirements of miniaturization of electrostatic sensors.

[0006] To achieve the above objectives, in a first aspect, the present invention provides an electrostatic sensor comprising: The outer casing has an installation space formed inside it, and an installation opening communicating with the installation space is formed on the casing wall. A PCBA board, wherein the PCBA board is mounted within the mounting space, one side of the PCBA board faces the mounting opening, and mounting holes are formed on the PCBA board corresponding to the mounting opening; and... An electrostatic discharge (ESD) detection mechanism is installed in the mounting hole and faces the mounting opening. The ESD detection mechanism is electrically connected to the PCBA board to detect static electricity.

[0007] In one embodiment, the electrostatic detection mechanism includes: A light guide element, wherein the light guide element is disposed at the mounting port; and, An electrostatic discharge (ESD) detection component is installed in the mounting hole and oriented towards the mounting opening. The ESD detection component is electrically connected to the PCBA board to detect static electricity.

[0008] In one embodiment, the electrostatic detection component includes: A motor mounting component is installed on the side of the PCBA board away from the mounting opening, and the motor mounting component is configured corresponding to the mounting hole; A drive motor, mounted on the motor mounting bracket, electrically connected to the PCBA board, passing through the mounting hole, with its output shaft facing the mounting opening; and... An electrostatic sensor is mounted on the output shaft of the drive motor, and the electrostatic sensor is positioned close to the mounting port. The drive motor can drive the electrostatic sensor to rotate so that the electrostatic sensor can detect static electricity.

[0009] In one embodiment, the housing includes a first housing and a second housing, the first housing and the second housing being interlocked to form the mounting space, and the mounting opening being formed on the first housing.

[0010] In one embodiment, the first housing is further provided with first holes spaced apart from the mounting opening, and a button is installed in the first hole. The button contacts the PCBA board and can start and stop the drive motor.

[0011] In one embodiment, the first housing is further provided with second holes spaced apart from the first hole and the mounting opening, and the PCBA board is provided with a charging plug at the position corresponding to the second hole, the charging plug being able to extend out of the mounting space from the second hole.

[0012] In one embodiment, the first housing is further provided with a third hole that is spaced apart from the first hole, the second hole and the mounting opening. The PCBA board is also provided with a lantern head connector at the position corresponding to the third hole, and the lantern head connector can extend out of the mounting space from the third hole.

[0013] In one embodiment, a metal fixing plate is also installed on the side of the second housing opposite to the mounting space. The metal fixing plate has a mounting groove for installing an external binding strap.

[0014] In one embodiment, a protective cover is also provided on the mounting port.

[0015] Based on the same technical concept, in a second aspect, the present invention also proposes an electrostatic elimination device, including the electrostatic sensor described in the first aspect.

[0016] The technical solution of this invention, by setting up a housing, a PCBA board, and an electrostatic detection mechanism, allows for the installation of the PCBA board within the housing. An installation port communicating with the installation space is formed on the housing. The PCBA board is then installed within the installation space, and a mounting hole is formed on the PCBA board corresponding to the mounting port. The electrostatic detection mechanism is then installed in the mounting hole, facing the mounting port. This modular structure reduces the assembly complexity of discrete components and simplifies the overall structure. The hole-and-hole mounting method further reduces the installation space required, ensuring the miniaturization of the electrostatic sensor. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the electrostatic sensor provided by the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of an electrostatic sensor in an explosion state, as shown in the example. Figure 3 for Figure 1 A schematic diagram of the side structure of an example electrostatic sensor; Figure 4 for Figure 1 Another structural schematic diagram of the electrostatic sensor shown in the example.

[0019] Explanation of icon numbers: 100. Housing; 110. Installation space; 200. PCBA board; 210. Mounting hole; 300. Electrostatic detection mechanism; 310. Light guide; 320. Electrostatic detection assembly; 321. Motor mounting component; 322. Drive motor; 323. Electrostatic sensor; 120. First housing; 130. Second housing; 140. Button; 150. Charging plug; 160. Lantern head connector; 400. Metal mounting plate; 500. Protective cover.

[0020] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0023] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0024] In existing technologies, electrostatic sensors typically employ discrete component assembly, resulting in a complex overall structure and a large installation space requirement. Traditional solutions connect the detection electrodes, signal processing circuitry, and protective housing via wires, leading to a large number of components and complex assembly, which fails to meet the miniaturization and integration requirements of smart wearable devices. For example, in compact devices such as smart bracelets, discrete structures cannot effectively utilize internal space, increasing product size, while the wire connection method increases the risk of failure.

[0025] This invention proposes an electrostatic sensor and an electrostatic elimination device.

[0026] Please see Figures 1 to 4For ease of understanding, this electrostatic sensor 323 includes a housing 100, a PCBA board 200, and an electrostatic detection mechanism 300. An installation space 110 is formed within the housing 100, and an installation opening communicating with the installation space 110 is formed on the housing wall of the housing 100. The PCBA board 200 is installed within the installation space 110, with one side of the PCBA board 200 facing the installation opening. A mounting hole 210 is formed on the PCBA board 200 corresponding to the position of the installation opening. The electrostatic detection mechanism 300 is installed in the mounting hole 210, and the electrostatic detection mechanism 300 faces the installation opening. The electrostatic detection mechanism 300 is electrically connected to the PCBA board 200 to detect electrostatic discharge.

[0027] Specifically, the housing 100 is formed into a closed structure through injection molding, with the mounting port located at a specific position on the housing wall for electrostatic discharge (ESD) detection. The PCBA board 200 is fixed inside the housing 100 with screws, and its mounting hole 210 is coaxially aligned with the mounting port of the housing 100. After the ESD detection mechanism 300 is embedded in the mounting hole 210, its sensing end extends to the vicinity of the mounting port to directly receive external ESD signals. Signal transmission is achieved through contact connections on the PCBA board 200, eliminating the need for traditional wire connections. The internal space of the housing 100 is completely filled by the PCBA board 200 and the detection mechanism, forming a compact three-dimensional layout.

[0028] In this embodiment, by setting up a housing 100, a PCBA board 200, and an electrostatic detection mechanism 300, during use, an installation space 110 is formed inside the housing 100, and an installation port communicating with the installation space 110 is formed on the housing 100. The PCBA board 200 is installed in the installation space 110, and an installation hole 210 is formed on the PCBA board 200 at the position corresponding to the installation port. The electrostatic detection mechanism 300 is installed in the installation hole 210, and the electrostatic detection mechanism 300 is oriented towards the installation port. Thus, the present invention adopts a modular structure and is installed, which reduces the assembly complexity of discrete components and simplifies the complexity of the overall structure. By adopting a hole-fit installation method, the present invention can also reduce the installation space 110, ensuring the miniaturization of the electrostatic sensor 323.

[0029] In one embodiment, the electrostatic discharge (ESD) detection mechanism 300 includes a light guide 310 and an ESD detection component 320. The light guide 310 is disposed at the mounting port, and the ESD detection component 320 is mounted in the mounting hole 210 and is oriented toward the mounting port. The ESD detection component 320 is electrically connected to the PCBA board 200 to detect ESD.

[0030] Specifically, the light guide 310 is configured to cover the mounting port area, and its light-transmitting characteristics allow electrostatic signals from the external environment to be transmitted to the electrostatic detection component 320 through the mounting port. The electrostatic detection component 320 is fixed to the PCBA board 200 through the mounting hole 210, with its detection end facing the mounting port and maintaining a preset distance from the light guide 310, thereby forming a directional detection area. When an external electrostatic signal acts on the light guide 310, the electrostatic detection component 320 generates an electrical signal by inducing a change in the electric field, and performs signal conversion and output through the circuitry on the PCBA board 200. Thus, the synergistic effect of the light guide 310 and the electrostatic detection component 320 achieves directional acquisition and efficient transmission of electrostatic signals.

[0031] In this embodiment, by integrating the light guide 310 and the electrostatic detection component 320 into the mounting port and mounting hole 210, the number of components and assembly complexity are reduced, while the signal transmission path is optimized. The light guide 310 not only simplifies the external protection structure but also avoids the signal attenuation problem caused by environmental interference of discrete electrodes, while the integrated design of the electrostatic detection component 320 reduces the difficulty of circuit board layout.

[0032] The combination of the light guide 310 and the electrostatic detection component 320 achieves a compact layout, reducing the installation space requirement 110. At the same time, the directional detection mechanism improves the signal acquisition accuracy, making it suitable for smart wearable device scenarios with high requirements for size and reliability.

[0033] In one embodiment, the electrostatic detection assembly 320 includes a motor mounting member 321, a drive motor 322, and an electrostatic sensor 323. The motor mounting member 321 is mounted on the side of the PCBA board 200 away from the mounting opening and is positioned corresponding to the mounting hole 210. The drive motor 322 is mounted on the motor mounting member 321 and is electrically connected to the PCBA board 200. The drive motor 322 passes through the mounting hole 210 and its output shaft faces the mounting opening. The electrostatic sensor 323 is mounted on the output shaft of the drive motor 322 and is positioned close to the mounting opening. The drive motor 322 can drive the electrostatic sensor 323 to rotate so that the electrostatic sensor 323 can detect electrostatics.

[0034] Specifically, the motor mounting bracket 321 is fixed to the side of the PCBA board 200 away from the mounting opening, and its position corresponds to the mounting hole 210 to ensure that the axis of the drive motor 322 is aligned with the center of the mounting hole 210. The drive motor 322 is inserted into the mounting hole 210 and passes through the PCBA board 200, with its output shaft extending to the area near the mounting opening. The electrostatic sensor 323 is fixed to the end of the output shaft of the drive motor 322 by a threaded connection or snap-fit. When the drive motor 322 is powered on, it drives the electrostatic sensor 323 to perform a 360-degree rotation scan. The PCBA board 200 establishes an electrical connection with the drive motor 322 through wires or a flexible circuit board, and simultaneously receives the charge signal collected by the electrostatic sensor 323 and performs analog-to-digital conversion processing.

[0035] In this embodiment, by driving the electrostatic sensor 323 to rotate via the drive motor 322, omnidirectional detection coverage can be achieved within a limited space. In the prior art, discrete components need to be installed and fixed separately, while in this embodiment, the drive motor 322 and the electrostatic sensor 323 are integrated into the mounting hole 210 of the PCBA board 200, which significantly reduces the number of components and assembly complexity.

[0036] In one embodiment, the housing 100 includes a first housing 120 and a second housing 130, which are engaged with each other to form an installation space 110, and an installation opening is formed on the first housing 120.

[0037] Specifically, the first housing 120 and the second housing 130 are fastened together by an edge snap-fit ​​structure, forming a sealed mounting space 110 for accommodating the PCBA board 200. The mounting opening is located in the central area of ​​the surface of the first housing 120, allowing the electrostatic detection mechanism 300 to directly face the external object to be tested. During assembly, the PCBA board 200 can be first fixed inside the first housing 120, and then the second housing 130 can be snapped together vertically to complete the encapsulation. When it is necessary to maintain the internal components, the PCBA board 200 can be directly accessed by separating the two housings.

[0038] In this embodiment, the use of a split-shell design not only enables modular assembly but also allows for rapid disassembly and maintenance without compromising structural integrity. Furthermore, the snap-fit ​​connection between the two shells avoids the irreversible assembly problems caused by traditional welding or gluing processes. This allows the PCBA board 200 and the testing mechanism to be assembled independently, reducing the overall scrap rate caused by the failure of a single component during production. The snap-fit ​​connection further simplifies the assembly process of the housing 100, enabling the sensor to be repeatedly disassembled and reassembled while maintaining its airtightness.

[0039] In one embodiment, the first housing 120 is further provided with first holes spaced apart from the mounting opening. A button 140 is installed in the first hole. The button 140 contacts the PCBA board 200 and can start and stop the drive motor 322.

[0040] Specifically, button 140 is embedded in the first hole, and its bottom makes physical contact with the conductive area of ​​PCBA board 200. When button 140 is pressed, its internal contacts form a conductive circuit with PCBA board 200, thereby triggering a control signal. This signal is transmitted to drive motor 322 through the circuit of PCBA board 200 to realize the start or stop operation of the motor. The installation position of button 140 is spaced apart from the installation port to avoid spatial interference between the electrostatic detection mechanism 300 and button 140 when it is operating, and at the same time facilitates one-handed operation by the user.

[0041] In this embodiment, the button 140 is directly integrated into the first hole of the housing 100, and the signal is transmitted through physical contact. No additional wiring or connectors are required, which effectively reduces the number of parts and reduces assembly complexity.

[0042] In one embodiment, the first housing 120 is also provided with second holes that are spaced apart from the first hole and the mounting opening. The PCBA board 200 is provided with a charging plug 150 at the position corresponding to the second hole. The charging plug 150 can extend from the second hole to the mounting space 110.

[0043] Specifically, the charging plug 150 is directly integrated into a preset position on the PCBA board 200, which is aligned with the axis of the second hole. When the PCBA board 200 is installed inside the housing 100, the metal contact portion of the charging plug 150 extends outward through the second hole, forming an external charging interface. Because the second hole is spaced from the first hole at the button 140 mounting position and the mounting port of the detection mechanism, the working area of ​​the charging plug 150 is physically isolated from the button 140 operating area and the electrostatic detection area. Therefore, the charging plug 150 does not require an additional independent mounting structure; its power transmission lines can be directly connected through the internal wiring of the PCBA board 200, reducing the length of the wires and the number of interfaces.

[0044] In this embodiment, by integrating the charging plug 150 onto the PCBA board 200 and exposing the interface using a second hole, the charging function module and the main control circuit form an integrated structure. This not only eliminates the need for installation space 110 for a separate charging module but also avoids the problem of loose wiring caused by frequent plugging and unplugging of external interfaces. The design of directly exposing the charging plug 150 through the second hole achieves a compact layout of the circuit module while ensuring normal operation of the charging function, and reduces the risk of poor contact caused by separate interface installation. This embodiment is particularly suitable for applications in smart wearable devices that require both miniaturization and high reliability.

[0045] In one embodiment, the first housing 120 is also provided with a third hole that is spaced apart from the first hole, the second hole and the mounting opening. The PCBA board 200 is also equipped with a lantern head connector 160 at the position corresponding to the third hole. The lantern head connector 160 can extend from the third hole to the mounting space 110.

[0046] Specifically, the location of the third hole is spatially optimized to avoid overlapping with the first hole, the second hole, and the mounting opening, thus preventing any weakening of the structural strength of the housing 100. The mounting position of the lantern head connector 160 on the PCBA board 200 is aligned with the third hole, allowing the main body of the connector to extend outward through the hole while maintaining a seal with the housing. This structure allows external cables to be directly connected to the internal circuitry of the sensor via the lantern head connector 160, eliminating the need for an additional external interface module.

[0047] In this embodiment, by distributing the third hole at intervals with other functional holes and using the integrated installation method of the lantern head connector 160, the interface function is integrated while maintaining the integrity of the housing.

[0048] In one embodiment, a metal fixing plate 400 is also installed on the side of the second housing 130 away from the mounting space 110. The metal fixing plate 400 has a mounting groove, which can be used to install an external binding strap.

[0049] Specifically, a metal fixing plate 400 is provided on the outside of the second housing 130, forming a detachable connection with an external binding strap via a mounting groove. When it is necessary to fix the sensor to the wrist, arm, or other parts of the body, the binding strap can pass through the mounting groove and wrap around it for fixation. The metal fixing plate 400, as a rigid support structure, can distribute the tension of the binding strap and prevent the housing 100 from deforming due to uneven stress. The depth and width of the mounting groove can be adapted according to the thickness of the binding strap; for example, the groove depth can be designed to be 2-3 mm and the groove width can be designed to be 5-8 mm, ensuring that the binding strap will not accidentally come out after being embedded.

[0050] In this embodiment, the cooperation between the metal fixing plate 400 and the mounting groove not only enhances the mechanical strength of the binding structure but also enables quick replacement of the binding straps. For example, in sports scenarios, they can be replaced with more breathable braided straps, or in industrial scenarios, they can be replaced with anti-static straps. The rigid connection structure between the metal fixing plate 400 and the mounting groove ensures that the sensor remains stably attached during dynamic use, while reducing the complexity of the binding strap installation structure. For example, assembly can be completed without the need for additional screws or adhesives.

[0051] In one embodiment, a protective cover 500 is also provided on the mounting port.

[0052] Specifically, the protective cover 500 is fixed to the edge of the mounting opening via a snap-fit ​​mechanism, completely covering the mounting opening area. The pore density of the protective cover 500 is set to contain 50 to 200 through holes per square centimeter, ensuring that the electrostatic detection mechanism 300 can effectively contact the external environment while blocking dust particles and liquid splashes. A sealing ring, such as silicone, can be provided at the contact surface between the protective cover 500 and the outer shell 100 to form a secondary protection structure. When dust or moisture is present in the external environment, the protective cover 500 prevents contaminants from entering the installation space 110 through physical barrier, avoiding a decrease in detection accuracy of the electrostatic detection component 320 due to dust accumulation.

[0053] In some embodiments, the protective cover 500 can be designed as a detachable structure, for example, connected to the outer casing 100 via a rotary latch, facilitating regular cleaning and maintenance. The surface of the protective cover 500 can be treated with an antistatic coating, such as indium tin oxide, to prevent the accumulation of static charge that could interfere with test results. For high-humidity environments, a water-absorbing resin layer, such as sodium polyacrylate, can be added to the inside of the protective cover 500 to absorb any trace amounts of permeated moisture.

[0054] In this embodiment, by adding a protective cover 500 with a filtering function, the continuous working time of the sensor under complex working conditions is effectively extended while maintaining detection accuracy. Existing technologies typically employ a fully enclosed structure to achieve dust prevention, requiring additional detection windows and sealing components, leading to increased structural complexity. The protective cover 500 forms a physical barrier while maintaining detection functionality, reducing maintenance frequency and improving equipment reliability. This structure ensures electrostatic signal penetration while effectively isolating solid particles and liquid intrusion, making the sensor suitable for complex application scenarios such as industrial production and outdoor operations.

[0055] Based on the same technical concept, in a second aspect, the present invention also proposes an electrostatic elimination device, including the electrostatic sensor 323 of the first aspect.

[0056] Specifically, the static electricity elimination device uses a built-in static electricity sensor 323 to detect static electricity in the environment or on the surface of an object in real time. When a static electricity signal is detected, the elimination mechanism is triggered. For example, the light guide 310 in the static electricity sensor 323 guides the external static electricity signal to the static electricity detection component 320. The drive motor 322 drives the static electricity sensor 323 to rotate to expand the detection range. The detection signal is transmitted to the PCBA board 200 for processing, and then the elimination mechanism releases the neutralized charge based on the processing result.

[0057] In this embodiment, by integrating the electrostatic sensor 323 with the elimination mechanism, the number of components and connection complexity are reduced. At the same time, the detection efficiency is improved by utilizing the rotation detection mechanism, resulting in a more compact structure that is suitable for space-constrained smart wearable devices.

[0058] It can be further clarified that, in this embodiment, by setting a metal fixing plate 400 and setting an installation groove on the metal fixing plate 400, the installation groove can be connected to an external binding belt, thereby enabling the present invention to bind the electrostatic sensor to the worker's arm, thus enabling the sensor to achieve miniaturization.

[0059] The above description is merely an exemplary embodiment of the present invention and does not limit the scope of the present invention. Any equivalent structural transformations made based on the technical concept of the present invention and the contents of the specification and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the protection scope of the present invention.

Claims

1. An electrostatic sensor, characterized by The static electricity detection mechanism comprises: a light guide member arranged in the installation opening; and a static electricity detection assembly installed in the installation hole and arranged towards the installation opening, and electrically connected with the PCBA board to detect static electricity. The static electricity detection assembly comprises:

2. The electrostatic sensor of claim 1, wherein, a motor fixing member installed on the side of the PCBA board away from the installation opening, and arranged corresponding to the installation hole; a driving motor installed on the motor fixing member, electrically connected with the PCBA board, arranged in the installation hole, and having an output shaft arranged towards the installation opening; and a static electricity sensor installed on the output shaft of the driving motor, arranged close to the installation opening, and driven to rotate by the driving motor to detect static electricity.

3. The electrostatic sensor of claim 2, wherein, The housing comprises a first housing and a second housing, which are buckled to each other to form the installation space, and the installation opening is formed on the first housing. The first housing is further provided with a first hole spaced apart from the installation opening, and a key is installed in the first hole, which is in contact with the PCBA board and can start and stop the driving motor. The first housing is further provided with a second hole spaced apart from the first hole and the installation opening, and the PCBA board is provided with a charging plug corresponding to the position of the second hole, which can extend out of the installation space from the second hole. The first housing is further provided with a third hole spaced apart from the first hole, the second hole and the installation opening, and the PCBA board is further provided with a lantern head joint corresponding to the position of the third hole, which can extend out of the installation space from the third hole.

4. The electrostatic sensor of claim 3, wherein, The side of the second housing away from the installation space is further provided with a metal fixing plate, and the metal fixing plate is provided with an installation groove, which can install an external binding belt.

5. The electrostatic sensor of claim 4, wherein, The installation opening is further provided with a protective cover.

6. The electrostatic sensor of claim 5, wherein, The static electricity sensor comprises any one of claims 1-9.

7. The electrostatic sensor of claim 6, wherein, The static electricity sensor comprises any one of claims 1-9.

8. The electrostatic sensor of claim 4, wherein, ​ 9. The electrostatic sensor according to any one of claims 1 to 8, wherein ​ 10. An electrostatic elimination device, characterized by ​

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