Intrinsic safety type static elimination device with surface voltage detection function

Abstract

The invention belongs to the technical field of electrostatic protection, and particularly relates to an intrinsic safety type electrostatic elimination device with a surface voltage detection function, which comprises a cabinet main body, and is characterized in that the cabinet main body is provided with a flow panel, an electrostatic monitoring module, an electrostatic elimination module, an electrostatic grounding clamp, an explosion-proof switch and a grounding wire; a control module, a wireless communication module and a power supply module are integrated in the cabinet body. According to the intrinsic safety type static electricity elimination device with the surface voltage detection function, the capacitive induction sensor is combined with the ultrasonic ranging module and the human body induction sensor, non-contact static electricity real-time monitoring within the range of 2 m is achieved, the measurement frequency reaches 5 times per second, and static electricity changes of the human body, equipment and the environment can be accurately captured; the alarm threshold value can be adjusted, the requirements of different dangerous places are met, the problem that an existing device is passively eliminated at a time and has no real-time monitoring function is solved, conversion from passive response to active early warning is achieved, and electrostatic danger is prevented in advance.

Description

Technical Field

[0001] This invention relates to the field of electrostatic protection technology, specifically to an intrinsically safe electrostatic eliminator with surface voltage detection function. Background Technology

[0002] In the petrochemical and chemical industries, static electricity is a significant hidden danger that can lead to explosive accidents. Static electricity consists of stationary electric charges. When the same type of charge accumulates on the surface of an object, if the charge accumulates to a certain level, it may cause electrostatic discharge, igniting surrounding flammable gases or vapors and causing serious accidents.

[0003] Currently, electrostatic discharge (ESD) prevention measures in hazardous locations mainly include using anti-static clothing and shoes, and releasing static electricity before work using a human body electrostatic discharge alarm. However, these measures have significant shortcomings: Lack of detection methods: It is impossible to effectively detect whether anti-static clothing is qualified or ineffective, and there are also no clear requirements or testing for other clothing materials worn by workers, posing potential ESD hazards; Insufficient real-time monitoring: Existing ESD discharge equipment is mostly a single-time passive elimination method, unable to monitor subsequent static electricity accumulation in real time, and unable to promptly detect the risk of exceeding ESD limits; Lack of proactive warning: The equipment only provides a warning during ESD discharge, lacking proactive warning functions, and cannot prevent ESD hazards in advance. Therefore, this paper proposes an intrinsically safe ESD elimination device with surface voltage detection function. Summary of the Invention

[0004] The main objective of this invention is to provide an intrinsically safe electrostatic eliminator with surface voltage detection function, which can solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention proposes an intrinsically safe electrostatic eliminator with surface voltage detection function, comprising a cabinet body, wherein the cabinet body is provided with a process panel, an electrostatic monitoring module, an electrostatic eliminator module, an electrostatic grounding clamp, an explosion-proof switch and a grounding wire, and the cabinet body integrates a control module, a wireless communication module and a power supply module; The electrostatic monitoring module includes a protective shell, a capacitive sensing sensor, a display screen, an ultrasonic ranging module, buttons, and a human body sensor. The capacitive sensing sensor, ultrasonic ranging module, and human body sensor are all mounted on the protective shell. The capacitive sensing sensor is used to monitor the electrostatic voltage within a 2m vertical distance centered on it, with a measurement range of 0.5~9.99kV. The ultrasonic ranging module is used to detect the distance between the target and the sensor, with a measurement range satisfying a 120° horizontal and 60° vertical spatial envelope. The human body sensor is used to detect when a person approaches. The digital display unit is used to display the electrostatic voltage value and equipment status. The electrostatic elimination module includes a mounting base, a status light, an electrostatic discharge touch ball, and a grounding detection unit. The electrostatic discharge touch ball is made of a sub-conductor material, and the grounding detection unit is used to monitor the grounding resistance to ensure that the grounding resistance is <60Ω. The control module includes an MCU control chip, an alarm unit, and a storage unit. The MCU control chip is electrically connected to the electrostatic monitoring module, the electrostatic elimination module, the wireless communication module, and the power supply module. The alarm unit includes a status indicator light and a voice speaker, which are used to issue audible and visual alarms and voice prompts when the electrostatic discharge exceeds the limit. The storage unit is used to record the equipment operation status, electrostatic monitoring data, and alarm information.

[0006] Preferably, the wireless communication module is used to enable networking of multiple devices and data interaction with a remote monitoring platform, and supports 485 communication or switch signal output.

[0007] Preferably, the power supply module includes a power conversion unit and a safety barrier, wherein the power conversion unit converts an external 220VAC or 24VDC power supply into the device's operating voltage.

[0008] Preferably, the electrostatic monitoring module measures at a frequency of 5 times per second, and the alarm threshold can be adjusted via a setting button, with an adjustment range of 0.5~2.0kV. When the capacitive sensing sensor detects that the electrostatic voltage exceeds the alarm threshold, and the ultrasonic ranging module and the human body sensing sensor confirm that the target is within the monitoring range, the control module triggers the alarm unit to operate.

[0009] Preferably, the working logic of the alarm unit is as follows: when the static electricity exceeds the standard, the indicator light is constantly red and the voice speaker announces "Static electricity detected, please touch to eliminate it"; if the person touches the static electricity release ball to eliminate the static electricity within 10 seconds, the indicator light turns green and the voice announces "You are safe from static electricity", and the information "Static electricity exceeded the standard and has been released" is uploaded through the wireless communication module; if the static electricity is not eliminated within 10 seconds, the alarm automatically stops and the wireless communication module uploads the information "Static electricity exceeded the standard and has not been released".

[0010] Preferably, the static electricity elimination module further includes a humidity sensor, which is used to detect the ambient humidity. When the humidity is ≥95% and condensation is present or rain is detected, the control module controls the device to enter the rain sleep mode. At this time, the static electricity detection function and the human body induction function are turned off, and the indicator light flashes green on the left and red on the right. When the static electricity release touch ball is touched, the indicator light flashes once and a voice prompt indicates the current mode. The device automatically returns to standby mode 10 minutes after the rain stops or can be manually de-slept by setting a button.

[0011] Preferably, the wireless communication module supports networking of multiple devices. After networking, the working status, electrostatic monitoring data and alarm records of each device can be viewed in real time through a remote monitoring platform. The remote monitoring platform is equipped with "Human Electrostatic Monitoring and Release Management System" software, which has data display, storage, query and audible and visual alarm prompts.

[0012] Preferably, the operation logic of the setting button includes alarm threshold adjustment, signal output mode, volume adjustment, and voice playback content selection.

[0013] Preferably, the bottom of the cabinet body is provided with a grounding terminal, which is connected to the grounding network through a grounding wire. The grounding wire is connected by two M10 bolts in a staggered manner. The bottom of the cabinet body is also provided with mounting holes for ground fixing installation by expansion bolts.

[0014] Preferably, the power conversion unit and safety barrier of the power supply module are independently packaged, the non-intrinsically safe terminals and intrinsically safe terminals are arranged separately, and the external power input and signal output are realized through different interfaces to avoid signal interference.

[0015] This invention provides an intrinsically safe electrostatic eliminator with surface voltage detection function. It has the following advantages: (1) The intrinsically safe electrostatic eliminator with surface voltage detection function uses a capacitive sensing sensor combined with an ultrasonic ranging module and a human body sensing sensor to achieve non-contact real-time electrostatic monitoring within a 2m range. The measurement frequency reaches 5 times / second, which can accurately capture the electrostatic changes of the human body, equipment and environment. The alarm threshold is adjustable to adapt to the needs of different dangerous places, solve the problem of existing equipment "single passive elimination without real-time monitoring", realize the transformation from "passive response" to "active early warning", and prevent electrostatic hazards in advance.

[0016] (2) The intrinsically safe static eliminator with surface voltage detection function integrates sound and light alarm and voice prompt functions. When the static electricity exceeds the standard, the red light is always on and the voice broadcast is given. After successful elimination, the green light prompts and the voice confirms. There is a special alarm when there is a grounding fault. The information transmission is intuitive. The digital display unit displays the static voltage and equipment status in real time, and the staff can quickly obtain key information. The button operation logic is clear, supports parameter customization, adapts to the usage needs of different scenarios, and reduces the difficulty of operation.

[0017] (3) The intrinsically safe static eliminator with surface voltage detection function supports wireless networking of multiple devices. The working status, static data and alarm records of each device can be viewed in real time through the remote monitoring platform. It has data storage, query and report generation functions; abnormal situations are uploaded in real time, which facilitates remote monitoring and timely handling by management personnel, reduces the cost of manual inspection, and improves the level of information technology in safety management.

[0018] (4) The intrinsically safe electrostatic eliminator with surface voltage detection function integrates a humidity sensor to achieve a rain sleep mode and avoid false triggering in high humidity environment; the ranging module works in conjunction with the human body induction sensor to ensure accurate monitoring range; the grounding detection unit monitors the grounding status in real time to improve equipment stability; the equipment has an operating temperature range of -40~+50℃ and humidity <95% without condensation, making it suitable for various harsh environments such as oil depots and gas stations, with a wide range of applications. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the electrostatic monitoring module structure of the present invention; Figure 3 This is a schematic diagram of the static elimination module structure of the present invention; Figure 4 This is a flowchart of the electrostatic monitoring and alarm process of the present invention; Figure 5 This is a schematic diagram illustrating the electrostatic monitoring and elimination principle of the present invention.

[0021] Explanation of icon numbers: 1. Cabinet body; 2. Process panel; 3. Static electricity monitoring module; 4. Static electricity elimination module; 5. Static electricity grounding clamp; 6. Explosion-proof switch; 7. Grounding wire; 31. Protective shell; 32. Capacitive sensing sensor; 33. Display screen; 34. Status indicator light; 35. Ultrasonic ranging module; 36. Button; 37. Human body sensor; 38. Voice speaker; 41. Mounting base; 42. Status light; 43. Static discharge touch ball; 44. Humidity sensor.

[0022] 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

[0023] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figures 1-5 This invention proposes an intrinsically safe static electricity elimination device with surface voltage detection function, comprising a cabinet body 1. The cabinet body 1 is equipped with a process panel 2, a static electricity monitoring module 3, a static electricity elimination module 4, a static electricity grounding clamp 5, an explosion-proof switch 6, and a grounding wire 7. The cabinet body 1 integrates a control module, a wireless communication module, and a power supply module. The process panel 2 indicates the equipment operation steps (e.g., "grounding → turn on the explosion-proof switch → eliminate static electricity") to guide the staff to operate in a standardized manner. The static electricity monitoring module 3 captures environmental and human static electricity in real time and transmits the data to the control module. After analyzing the data, the control module drives the static electricity elimination module 4 to perform a release action or trigger an alarm. The static electricity grounding clamp 5 is used to connect equipment such as oil tankers and oil pipelines to achieve static electricity grounding of the equipment. The explosion-proof switch 6 controls the power supply of the equipment to avoid potential circuit hazards during dangerous operations. The grounding wire 7 ensures a reliable connection between the cabinet body and the grounding network, forming a complete static electricity release path. The wireless communication module enables remote data transmission, and the power supply module provides intrinsically safe power to each module, ensuring electrical safety in explosive environments.

[0025] In an embodiment of the present invention, the electrostatic monitoring module 3 includes a protective shell 31, a capacitive sensing sensor 32, a display screen 33, an ultrasonic ranging module 35, a button 36, and a human body sensor 37. The capacitive sensing sensor 32, the ultrasonic ranging module 35, and the human body sensor 37 are all mounted on the protective shell 31. The capacitive sensing sensor monitors the electrostatic voltage within a 2m vertical distance centered on it, with a measurement range of 0.5~9.99kV. The ultrasonic ranging module detects the distance between the target and the sensor, with a measurement range satisfying a 120° horizontal and 60° vertical spatial envelope. The human body sensor detects approaching personnel. The digital display unit displays the electrostatic voltage value and equipment status. The electrostatic elimination module 4 includes a mounting base 41, a status light 42, an electrostatic release touch ball 43, and a grounding detection unit. The electrostatic release touch ball 43... 3. Using a sub-conductive material, the grounding detection unit monitors the grounding resistance, ensuring it is <60Ω. The MCU control chip is electrically connected to the electrostatic monitoring module 3, the electrostatic elimination module 4, the wireless communication module, and the power supply module. The alarm unit includes a status indicator light 34 and a voice speaker 38, which issue audible and visual alarms and voice prompts when electrostatic discharge exceeds the limit. The storage unit records the equipment's operating status, electrostatic monitoring data, and alarm information. By using a capacitive sensing sensor 32 combined with an ultrasonic ranging module 35 and a human body sensing sensor 37, non-contact real-time electrostatic monitoring is achieved within a 2m range, with a measurement frequency of up to 5 times / second. This accurately captures changes in electrostatic discharge from the human body, equipment, and environment, solving the problem of existing equipment's "single passive elimination without real-time monitoring," and realizing a shift from "passive response" to "active early warning," thus preventing electrostatic hazards in advance.

[0026] Furthermore, the wireless communication module is used to enable networking of multiple devices and data interaction with a remote monitoring platform, supporting 485 communication or switch signal output. The power supply module includes a power conversion unit and a safety barrier. The power conversion unit converts external 220VAC or 24VDC power into the device's operating voltage. Furthermore, the electrostatic monitoring module 3 measures at a frequency of 5 times / second, and the alarm threshold can be adjusted via the setting button 36, with an adjustment range of 0.5~2.0kV. When the capacitive sensing sensor 32 detects that the electrostatic voltage exceeds the alarm threshold, and the ultrasonic ranging module 35 and the human body sensing sensor 37 confirm that the target is within the monitoring range, the control module triggers the alarm unit to work. The wireless communication module adopts Mesh networking technology, and a single master device can connect 10~20 slave devices to form a monitoring network covering the area. When the device is working normally, the wireless module sends regular data to the platform every 30 seconds. When the electrostatic discharge exceeds the standard or there is a grounding fault, alarm information is uploaded in real time, supporting 485 communication or switch signals. The power conversion unit of the power supply module converts the external 220VAC / 24VDC wide-range voltage into the intrinsically safe 12V / 5V voltage required by the device. The safety barrier, through current limiting and voltage limiting design, limits the energy at the power supply end to the intrinsically safe parameter range, ensuring that even if there is a circuit failure, the released energy cannot ignite an explosive mixture.

[0027] Furthermore, the alarm unit's operating logic is as follows: When static electricity exceeds the limit, the indicator light remains red, and the voice speaker announces, "Static electricity detected, please touch to eliminate it." If the person touches the static discharge ball within 10 seconds to eliminate static electricity, the indicator light turns green, the voice announces, "You are safe from static electricity," and the "Static electricity exceeded the limit and has been discharged" information is uploaded via the wireless communication module. If the static electricity is not eliminated within 10 seconds, the alarm automatically stops, the wireless communication module uploads the "Static electricity exceeded the limit and has not been discharged" information, and after the alarm is triggered, the control module starts a 10-second countdown, monitoring the touch signal of the static discharge ball 43 and the capacitance sensor 32 in real time. The system monitors voltage changes. If a person touches the electrostatic discharge ball 43 within 10 seconds, the subconductor material slowly releases static electricity. When the voltage drops below the threshold, the control module determines "successful elimination," immediately switches the indicator light to green, broadcasts confirmation information, records the elimination time and the voltage difference before and after, and uploads "exceeded standard and released" data to the platform via the wireless module. If there is no touch within 10 seconds or the voltage still exceeds the standard after touch, the control module automatically stops the alarm (to avoid continuous alarms disturbing residents), stores the "exceeded standard not eliminated" record, and simultaneously uploads it to the platform to trigger a remote early warning, reminding management personnel to intervene and verify.

[0028] Furthermore, the static elimination module also includes a humidity sensor 44, which is used to detect the ambient humidity. When the humidity is ≥95% and condensation is present or rain is detected, the control module controls the device to enter the rain sleep mode. At this time, the static detection function and the human body induction function are turned off, and the indicator light flashes green on the left and red on the right. When the static discharge touch ball 43 is touched, the indicator light flashes once and a voice prompt indicates the current mode. The device automatically returns to standby mode 10 minutes after the rain stops, or can be manually de-activated via the setting button 36 to avoid accidental triggering in high humidity environments.

[0029] Furthermore, the wireless communication module supports networking of multiple devices. After networking, the working status, electrostatic monitoring data and alarm records of each device can be viewed in real time through the remote monitoring platform. The remote monitoring platform is equipped with the "Human Electrostatic Monitoring and Release Management System" software, which has data display, storage, query and audible and visual alarm prompts. The operation logic of the 36 buttons includes alarm threshold adjustment, signal output mode, volume adjustment and voice playback content selection.

[0030] In addition, the bottom of the main body 1 of the cabinet is equipped with a grounding terminal, which is connected to the grounding network through the grounding wire 7. The grounding wire 7 is connected by two M10 bolts in a forked manner. The bottom of the main body 1 of the cabinet is also equipped with mounting holes for ground fixing installation by expansion bolts. The power conversion unit and safety barrier of the power supply module adopt an independent encapsulation design. Non-intrinsically safe terminals and intrinsically safe terminals are arranged separately. External power input and signal output are achieved through different interfaces to avoid signal interference. The main body 1 of the cabinet is equipped with a heat dissipation structure to ensure stable operation of the equipment within the operating temperature range of -40~+50℃.

[0031] It should be noted that the above electrical components are all existing technology products. Those skilled in the art should select, install, and complete the circuit debugging work according to the needs of use to ensure that all electrical appliances can work normally. The components are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. No specific restrictions are made here. The standard parts used in this application can all be purchased from the market. The specific connection methods of each part are all connected by conventional means such as riveting and welding that are mature in the prior art. The standard parts are all conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art.

[0032] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An intrinsically safe electrostatic eliminator with surface voltage detection function, comprising a cabinet body (1), characterized in that: The main body (1) of the cabinet is equipped with a process panel (2), an electrostatic monitoring module (3), an electrostatic elimination module (4), an electrostatic grounding clamp (5), an explosion-proof switch (6) and a grounding wire (7). The main body (1) of the cabinet integrates a control module, a wireless communication module and a power supply module. The electrostatic monitoring module (3) includes a protective shell (31), a capacitive sensing sensor (32), a display screen (33), an ultrasonic ranging module (35), a button (36), and a human body sensing sensor (37). The capacitive sensing sensor (32), the ultrasonic ranging module (35), and the human body sensing sensor (37) are all installed on the protective shell (31). The capacitive sensing sensor is used to monitor the electrostatic voltage within a vertical distance of 2m centered on it, with a measurement range of 0.5~9.99kV. The ultrasonic ranging module is used to detect the distance between the target and the sensor, with a measurement range that meets the spatial envelope of 120° horizontally and 60° vertically. The human body sensing sensor is used to identify people approaching. The digital display unit is used to display the electrostatic voltage value and the equipment status. The electrostatic elimination module (4) includes a mounting base (41), a status light (42), an electrostatic release touch ball (43), and a grounding detection unit. The electrostatic release touch ball (43) is made of a subconductor material, and the grounding detection unit is used to monitor the grounding resistance to ensure that the grounding resistance is <60Ω. The control module includes an MCU control chip, an alarm unit, and a storage unit. The MCU control chip is electrically connected to the electrostatic monitoring module (3), the electrostatic elimination module (4), the wireless communication module, and the power supply module, respectively. The alarm unit includes a status indicator light (34) and a voice speaker (38), which are used to issue audible and visual alarms and voice prompts when the electrostatic charge exceeds the limit. The storage unit is used to record the equipment operation status, electrostatic monitoring data, and alarm information.

2. The intrinsically safe electrostatic eliminator with surface voltage detection function according to claim 1, characterized in that: The wireless communication module is used to enable networking of multiple devices and data interaction with a remote monitoring platform, and supports 485 communication or switch signal output.

3. The intrinsically safe electrostatic eliminator with surface voltage detection function according to claim 1, characterized in that: The power supply module includes a power conversion unit and a safety barrier. The power conversion unit converts external 220VAC or 24VDC power into the device's operating voltage.

4. The intrinsically safe electrostatic eliminator with surface voltage detection function according to claim 1, characterized in that: The electrostatic monitoring module (3) measures at a frequency of 5 times per second. The alarm threshold can be adjusted by setting the button (36) with an adjustment range of 0.5~2.0kV. When the capacitive sensing sensor (32) detects that the electrostatic voltage exceeds the alarm threshold, and the ultrasonic ranging module (35) and the human body sensing sensor (37) confirm that the target is within the monitoring range, the control module triggers the alarm unit to work.

5. An intrinsically safe electrostatic eliminator with surface voltage detection function according to claim 1, characterized in that: The working logic of the alarm unit is as follows: when the static electricity exceeds the standard, the indicator light will remain red and the voice speaker will announce "Static electricity detected, please touch to eliminate it"; if the person touches the static electricity release ball to eliminate the static electricity within 10 seconds, the indicator light will turn green and the voice will announce "You are safe from static electricity", and the information "Static electricity exceeded the standard and has been released" will be uploaded through the wireless communication module. If the static electricity is not eliminated within 10 seconds, the alarm will automatically stop, and the wireless communication module will upload the information that "static electricity exceeds the limit and has not been released".

6. The intrinsically safe electrostatic eliminator with surface voltage detection function according to claim 1, characterized in that: The static elimination module also includes a humidity sensor (44), which is used to detect the ambient humidity. When the humidity is ≥95% and there is condensation or rain is detected, the control module controls the device to enter the rain sleep mode. At this time, the static detection function and the human body sensing function are turned off, and the indicator light flashes green on the left and red on the right. When the static discharge touch ball (43) is touched, the indicator light flashes once and a voice prompt indicates the current mode. The device automatically returns to standby mode 10 minutes after the rain stops or can be manually released from sleep mode by setting the button (36).

7. An intrinsically safe electrostatic eliminator with surface voltage detection function according to claim 1, characterized in that: The wireless communication module supports networking of multiple devices. After networking, the working status, electrostatic monitoring data and alarm records of each device can be viewed in real time through a remote monitoring platform. The remote monitoring platform is equipped with "Human Electrostatic Monitoring and Release Management System" software, which has data display, storage, query and audible and visual alarm prompts.

8. An intrinsically safe electrostatic eliminator with surface voltage detection function according to claim 1, characterized in that: The operation logic of the setting button (36) includes alarm threshold adjustment, signal output mode, volume adjustment and voice playback content selection.

9. An intrinsically safe electrostatic eliminator with surface voltage detection function according to claim 1, characterized in that: The bottom of the cabinet body (1) is provided with a grounding terminal, which is connected to the grounding network through a grounding wire (7). The grounding wire (7) is connected by two M10 bolts in a forked manner. The bottom of the cabinet body (1) is also provided with mounting holes for ground fixing installation through expansion bolts.

10. An intrinsically safe electrostatic eliminator with surface voltage detection function according to claim 1, characterized in that: The power conversion unit and safety barrier of the power supply module are independently packaged, and the non-intrinsically safe terminals and intrinsically safe terminals are arranged separately. External power input and signal output are achieved through different interfaces to avoid signal interference.

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