Substation kiosk high-voltage chamber operation safety prevention and control device

Abstract

The utility model belongs to the field of electric power safety equipment, particularly relates to an operation safety prevention and control device for a high-voltage chamber of a substation kiosk, and aims to solve the problems that illegal processes cannot be identified and cooperative prevention and control are lacked. The system comprises a central control host, a personnel positioning module, an equipment state sensing module, an environment monitoring module and a directional intervention module. The personnel positioning module monitors the position and action of an operator through a positioning unit and a posture sensing unit which are arranged in the safety helmet; the equipment state sensing module obtains equipment operation information through the cabinet door state detection unit and the operation handle pressure sensing unit; the environment monitoring module adopts an infrared thermal sensing unit and a visible light monitoring unit which are arranged at the wall corner of the high-voltage chamber to collect environment data. The output end of each sensing module is connected with the multi-channel input end of the central control host, after the risk is analyzed and processed, the directional intervention module is driven by the control signal output end to conduct accurate and safe intervention, and multi-dimensional intelligent prevention and control of the operation process are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of power safety equipment, and specifically relates to a safety control device for high-voltage room operations in a substation. Background Technology

[0002] With the development of smart grids, high-voltage indoor maintenance work in substations faces increasingly complex safety risks. Currently, mainstream safety protection systems have the following main technical limitations:

[0003] Existing technologies rely on mechanical interlocks or electronic locks to prevent accidental entry into live compartments, but lack effective monitoring of the use of circuit breaker operating handles. Personnel can operate the handle directly after opening the cabinet door, and there is no mechanism to detect whether the timing of the operation is compliant. Excessive force applied to the handle may cause mechanical damage, but existing key operations lack force feedback functions. The access control sensors and handle actions are not logically related, making it impossible to identify the illegal process of "operating before verifying power". Furthermore, different systems operate independently and lack coordinated prevention and control.

[0004] Based on this, this utility model proposes a safety control device for high-voltage room operations in substations. Utility Model Content

[0005] To address the aforementioned problems in existing technologies, namely their inability to identify violations and the lack of coordinated prevention and control, this utility model provides a safety prevention and control device for high-voltage room operations in substations, comprising:

[0006] Central control host;

[0007] The personnel positioning module includes a positioning unit and an attitude sensing unit built into the safety helmet;

[0008] The equipment status sensing module includes a cabinet door status detection unit and an operating handle pressure sensing unit;

[0009] The environmental monitoring module includes an infrared thermal sensing unit and a visible light monitoring unit deployed in the high-pressure chamber;

[0010] The directional intervention module includes an adjustable laser alarm unit and a directional acoustic warning unit installed on the top of the high-voltage cabinet;

[0011] The outputs of the personnel positioning module, equipment status sensing module, and environmental monitoring module are respectively connected to the multi-channel input of the central control host.

[0012] The drive end of the directional intervention module is connected to the control signal output end of the central control host.

[0013] Furthermore, the positioning unit of the personnel positioning module forms an integrated encapsulation structure with the rear liner of the safety helmet. The outer surface of the positioning unit is flush with the inner wall of the safety helmet, and the positioning antenna of the positioning unit is exposed on the liner surface.

[0014] Furthermore, the pressure sensing unit of the operating handle is embedded in the handle grip portion.

[0015] Furthermore, the adjustable laser alarm unit includes a laser source and a rotatable optical reflector assembly, the reflector assembly being driven by a stepper motor to adjust the laser projection angle.

[0016] Furthermore, the infrared thermal sensing unit and the visible light monitoring unit are mounted on a gimbal device, which is equipped with a linkage mechanism for synchronously adjusting the pitch angle of the two units.

[0017] Furthermore, the central control host housing is provided with parallel-arranged heat dissipation fins, and the bottom surface of the central control host is provided with a dustproof ventilation grille.

[0018] Furthermore, the directional acoustic warning unit adopts a parametric array speaker structure.

[0019] Furthermore, the cabinet door status detection unit adopts a redundant magnetic sensing component, which includes two independent magnetic induction elements arranged parallel to the edge of the cabinet door.

[0020] Furthermore, the device also includes a self-test feedback module, whose input terminal is connected to the working status output terminal of each functional module, and whose fault signal output terminal is connected to the alarm input terminal of the central control host.

[0021] Furthermore, each module is connected to the central control host via a shielded cable bundle, the outer layer of which is provided with an electromagnetic shielding braided mesh and a bending-resistant protective sleeve.

[0022] The beneficial effects of this utility model are:

[0023] Achieving closed-loop monitoring of the entire high-voltage operation process: By integrating personnel positioning, equipment status sensing (cabinet doors, operating handles), and environmental monitoring modules, a collaborative sensing network has been constructed. The central control host can correlate personnel location, cabinet door opening and closing status, and handle operation actions in real time, thereby automatically identifying and intervening in key violations such as "operating the handle without verifying power," filling the gap in existing technology for monitoring the compliance of operational sequences.

[0024] Introducing force feedback enhances equipment protection: A pressure sensor unit integrated into the handle monitors operating force in real time. If abnormal force exceeding the safety threshold is detected, the system immediately triggers an alarm. This effectively prevents damage to mechanical parts due to improper operation, extends equipment lifespan, and improves operational safety.

[0025] Strengthening multi-dimensional collaborative prevention and control capabilities: Breaking down information silos between traditional independent systems. The central control host integrates multi-source heterogeneous data such as personnel behavior (location, posture), equipment status (door opening and closing, handle pressure), and environmental information (thermal imaging, visible light images) to form a comprehensive judgment basis. This upgrades security prevention and control from passive protection at a single link to an active and collaborative protection system that runs through the entire operation chain.

[0026] Achieving precise and targeted intervention to enhance warning effectiveness: The innovative directional intervention module (adjustable laser and directional sound waves) can accurately locate the position of personnel violating regulations and issue an alarm based on instructions from the central host. This highly targeted and low-interference warning method not only significantly improves the transmission efficiency and recognition of warning information, but also significantly reduces the probability of personnel ignoring risks, while avoiding unnecessary interference with other staff in the vicinity.

[0027] Enhancing the overall intelligent level of safety management in high-voltage rooms: Through comprehensive perception and intelligent analysis of the status of people, equipment, and environment, as well as real-time and precise intervention in violations, this device significantly improves the risk identification capability, early warning response speed, and overall safety defense level of complex maintenance operations in substation high-voltage rooms, providing reliable technical support for intelligent operation and maintenance of the power grid. Attached Figure Description

[0028] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0029] Figure 1 This is a structural connection diagram of a safety control device for high-voltage room operations in a substation, according to this utility model. Detailed Implementation

[0030] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] like Figure 1 As shown, this utility model provides a safety control device for high-voltage room operations in a substation, comprising:

[0033] Central control host;

[0034] The personnel positioning module includes a positioning unit and an attitude sensing unit built into the safety helmet;

[0035] The equipment status sensing module includes a cabinet door status detection unit and an operating handle pressure sensing unit;

[0036] The environmental monitoring module includes an infrared thermal sensing unit and a visible light monitoring unit deployed in the high-pressure chamber;

[0037] The directional intervention module includes an adjustable laser alarm unit and a directional acoustic warning unit installed on the top of the high-voltage cabinet;

[0038] The outputs of the personnel positioning module, equipment status sensing module, and environmental monitoring module are respectively connected to the multi-channel input of the central control host.

[0039] The drive end of the directional intervention module is connected to the control signal output end of the central control host.

[0040] After the device is started, the environmental monitoring module is the first to operate. Infrared thermal sensing units deployed in the corners of the high-pressure room continuously scan the temperature distribution of the indoor equipment, capturing potential overheating anomalies; the visible light monitoring unit simultaneously captures environmental images to help identify unauthorized personnel intrusions or other environmental anomalies. This data is aggregated to the central control host to establish an initial environmental safety baseline and delineate safe operating areas.

[0041] The equipment status sensing module monitors key operational points of the equipment in real time. The cabinet door status detection unit (typically using magnetic induction or limit switch sensors) continuously reports the opening and closing status of each high-voltage cabinet door to the central host. The operating handle pressure sensing unit is built into the operating handle of the high-voltage circuit breaker or into the mechanical transmission mechanism, precisely measuring the force applied to the handle by the operator. Any slight operational movement (pressure > 0) will activate this sensing unit, uploading the pressure data in real time.

[0042] The personnel positioning module functions through the safety helmet worn by the operator. The helmet's built-in positioning unit (such as a UWB, Bluetooth AoA, or RFID positioning chip) continuously tracks the operator's precise three-dimensional position within the high-pressure chamber (accuracy up to 0.5 meters). A posture sensing unit (such as a six-axis IMU sensor) within the same helmet senses real-time changes in the operator's head posture (head up, head down, turning), helping to determine whether the operator is facing the equipment.

[0043] The positioning unit of the personnel positioning module and the rear liner of the safety helmet form an integrated encapsulation structure. The outer shell surface of the positioning unit is flush with the inner wall of the safety helmet, and the positioning antenna of the positioning unit is exposed on the liner surface.

[0044] Specifically, the positioning unit employs embedded packaging technology, deeply integrated with the helmet's rear liner structure. In practice, the mounting slot for the positioning unit is pre-set during the helmet's injection molding stage. This slot is located on the inner wall of the rear liner (corresponding to the wearer's occipital bone), and its dimensions precisely match the contour of the positioning unit's outer shell, ensuring that the unit's shell is completely flush with the inner surface of the helmet after embedding, without any protrusions or depressions. The positioning unit's miniature positioning antenna (such as a UWB or RFID antenna) is designed as an independent module, passing through a pre-reserved waterproof perforation in the liner, allowing its radiating surface to be directly exposed to the outer surface of the liner, while the antenna base remains sealed and fixed inside the outer shell. The exposed antenna portion is encapsulated in high-temperature resistant and corrosion-resistant polycarbonate material, with a thickness controlled within 0.5mm, and its surface smoothly transitions to the outer wall of the helmet, avoiding any impact on the overall structural strength and wearing comfort of the helmet.

[0045] The exposed antenna design significantly improves signal transmission efficiency. The antenna radiating surface is in direct contact with the helmet's external environment, effectively avoiding signal loss caused by the plastic casing of traditional built-in antennas. Simultaneously, the antenna base is connected to the positioning unit's main circuit board via a flexible coaxial cable. The cable is embedded in the wiring groove within the liner and secured with epoxy resin, preventing damage from pulling and shielding against electromagnetic interference. The outer shell is made of aluminum alloy, providing both electromagnetic shielding and heat dissipation. Thermal grease is filled inside to conduct heat generated during circuit operation to the helmet body for dissipation.

[0046] The exposed antenna surface is covered with a transparent scratch-resistant coating (Mohs hardness ≥ 6) and has passed IP67 dustproof and waterproof certification. A silicone sealing ring is used between the positioning unit shell and the helmet slot to ensure that sweat or rainwater cannot penetrate the electronic components. The overall structure has passed the GB 2811-2019 national standard impact resistance test for safety helmets: when the safety helmet is subjected to a 5kg steel hammer falling freely from a height of 1m, the positioning unit shell shows no deformation or displacement, and the exposed antenna structure shows no breakage. Continuous vibration test (frequency 10-500Hz, acceleration 50m / s²) has also been passed. 2 Afterwards, all components were connected securely.

[0047] The central control host is the decision-making hub of the system, seamlessly integrating all real-time data from the three modules mentioned above through multiple input channels. When a high-voltage switchgear door is opened, the host immediately initiates multiple verifications: first, it retrieves personnel location information to confirm the identity of the person opening the door and their real-time distance from the switchgear; simultaneously, the host obtains the current energized status of that high-voltage switchgear compartment in the power monitoring system through an interface (such as Modbus or IEC 61850 protocol). If the host determines that the compartment is energized and the personnel are too close, it immediately classifies it as a serious violation of "accidentally entering a energized compartment."

[0048] With the cabinet door open, pressure monitoring of the operating handle is crucial. Once the central host detects applied force (pressure > 0) on the operating handle via the pressure sensing unit, it immediately checks the voltage verification status of that interval. The key collaborative logic here is that the host needs to compare whether the system received a valid "voltage verified" signal for that interval when the handle action occurred (this signal may come from the electronic tag feedback of the smart voltage detector or be manually confirmed by the operator on a dedicated terminal). If no corresponding voltage verification signal is detected, the host determines that a fatal violation of the "operation before voltage verification" process has occurred. In addition, the host continuously monitors the handle pressure value. If the applied force exceeds a preset safety mechanical threshold (e.g., 500N, which can be set according to different devices), it will determine that there is a risk of damage to the equipment due to violent operation, and will also trigger an alarm.

[0049] Once the host computer detects any violation (whether it's unauthorized entry into a live compartment, failure to verify voltage, or violent operation), the directional intervention module is immediately activated. The host computer first calculates the precise location and facing direction of the violating personnel based on their positioning and posture data. Then, the control signal output drives the adjustable laser alarm unit located on top of the target high-voltage cabinet. The host computer sends a command containing precise angle parameters (pitch angle, horizontal angle) to control the laser emitter to rotate and project in a directional manner, generating a bright, continuously flashing (e.g., 2Hz frequency) red laser spot on the ground approximately 1 meter in front of the violating personnel's feet, forming a conspicuous visual warning line. Simultaneously, a directional acoustic warning unit located at the same position or near the cabinet top is also activated. The host computer calculates the optimal acoustic focusing direction based on the coordinates of the same location and controls the acoustic transducer array to emit a high-volume (typically above 90dB), highly directional warning voice message (e.g., "Warning! The compartment has not been verified for voltage; please stop operation immediately!"). This concentrated sound beam energy covers the target personnel area, effectively conveying the alarm information while minimizing interference to other personnel not violating the rules.

[0050] All alarm actions are recorded in real time, including timestamps, specific violation types, target location coordinates, and intervention measures taken (such as laser alarm activation and sound wave broadcast content). These are graphically displayed on the control panel at the high-voltage room entrance, indicating the alarm location and cause for management personnel to view. Alarm cancellation follows strict logic: only when personnel leave the danger zone based on alarm information, the cabinet door is closed again, or the system subsequently receives compliant voltage testing and grounding signals, will the central host issue a release command to deactivate directional interventions (such as turning off the laser and stopping the sound wave broadcast) and reset the operating handle pressure sensor unit to standby mode. All critical data throughout the operation (operation time accurate to milliseconds, continuous pressure change curves of the operating handle, cabinet door status changes, voltage testing signal records, and alarm logs) are encrypted and stored in the host's built-in memory or external storage devices, supporting post-event traceability audits by time, personnel, or equipment, providing complete evidence for accident analysis, process optimization, and operational assessment. The entire process embodies a complete intelligent safety control closed loop of perception-analysis-judgment-intervention-recording-closure.

[0051] In this embodiment, the pressure sensing unit of the operating handle is embedded in the handle grip. Specifically, the pressure sensing unit adopts a thin piezoresistive sensor array, which can be directly attached to the frequently touched area of ​​the operating handle.

[0052] In addition to being directly attached to the frequently touched areas of the control handle, a rectangular groove approximately 1.8 mm deep can be machined into the grip surface of the control handle. The groove is typically 80 mm long x 25 mm wide, with a rigid insulating substrate made of epoxy resin at the bottom. A piezoresistive sensor array—consisting of 32 parallel 5 mm x 5 mm miniature piezoresistive units arranged in a serpentine topology to achieve full pressure coverage—is tightly attached to this substrate, with the spacing between the sensor units controlled to an accuracy of 2 mm. A 0.3 mm thick elastic silicone protective layer covers the sensor surface. After precision injection molding to fill the groove, the outer surface of the sensor module is completely flush with the original contour of the handle, making the internal structural differences imperceptible to the operator.

[0053] To ensure the anti-interference capability of signal transmission, a 0.1 mm thick copper foil electromagnetic shielding layer is specially added between the sensor array and the insulating substrate. The grounding wire of the shielding layer is directly connected to the metal substrate of the handle, which can effectively suppress strong electric field interference of up to 10 kV / m. The sensor array can be wirelessly connected to the central host, or wired connection can be achieved through the wiring layout. This is within the capabilities of those skilled in the art, and the wiring layout here will not be described in detail.

[0054] The attitude sensing unit selected in this embodiment

[0055] The adjustable laser alarm unit in this embodiment includes a laser source and a rotatable optical reflector group. The reflector group is driven by a stepper motor to adjust the laser projection angle.

[0056] The laser source is a 635nm red semiconductor laser. After the divergence angle is compressed to 0.5mrad by a collimating lens group, the light source is incident on the core optical reflector group. The reflector group consists of two silver-plated plane mirrors arranged orthogonally: the horizontal axis reflector has a diameter of 50mm and is driven by stepper motor A to rotate horizontally (0-360° continuously controllable); the pitch axis reflector has a diameter of 35mm and is driven by stepper motor B to pitch vertically (-30° to +90° adjustable). The mirror group support is made of low-inertia carbon fiber and the drive shaft is supported by miniature ball bearings.

[0057] The stepper motor is a two-phase hybrid type, driving the mirror shaft through a 1:64 planetary gear reducer. The central control host calculates the three-dimensional geometric relationship between the target personnel's position coordinates and the laser unit's mounting point, and then calculates the required horizontal angle θ and pitch angle φ in real time.

[0058] The host converts the angle value into a motor control pulse sequence (4096 steps / revolution closed-loop control), which is then sent to the motor driver via an RS-485 bus. Position feedback is provided by a rotary encoder (1024 PPR resolution) mounted at the end of the drive shaft, forming a PID closed-loop control system to ensure that the laser beam pointing error is ≤ ±0.1°.

[0059] Once the central host detects a violation, it immediately calculates the three-dimensional coordinates of the ground projection point P, located 1 meter in front of the target person. The host then drives the reflector assembly to rotate to the target angles θ and φ, and the laser beam, after being reflected by the two mirrors, precisely points to point P. Simultaneously, the laser is controlled to complete 7 brightness gradients (0→100%→0 cycle) within 500ms, creating a strong visual flashing warning (frequency 2Hz).

[0060] If the person in violation moves (speed ≤ 2m / s), the host updates the coordinates and fine-tunes the angle of the mirror group every 200ms. The laser spot continuously follows the person's footsteps and dynamically shifts, with a maximum tracking delay of < 300ms.

[0061] In another embodiment, the laser alarm unit can also directly select a laser projector from the prior art to project a warning light spot onto at-risk personnel. The warning light spot includes:

[0062] The red circular no-entry zone pattern indicates that personnel are entering the electrified area.

[0063] A flashing yellow exclamation mark pattern indicates an untested operating handle.

[0064] In this embodiment, the infrared thermal sensing unit and the visible light monitoring unit are mounted on a gimbal device, and the gimbal device is equipped with a linkage mechanism for synchronously adjusting the pitch angle of the two units:

[0065] The infrared thermal sensing unit (FLIR Tau2 core) and the visible light camera (1 / 2.7" CMOS) are arranged side by side with an optical axis spacing of 40mm. They are mounted on a mounting plate, and a single-axis worm gear reduction mechanism is set on the back of the mounting plate, which is driven by a stepper motor to synchronously adjust the pitch angle.

[0066] The central control host sends pitch angle commands via RS-485 bus, which drive the stepper motor to rotate the worm gear, and after deceleration, drive the mounting plate to tilt at a uniform angle.

[0067] In this embodiment, the central control host housing is provided with parallel heat dissipation fins, and the bottom surface of the central control host is provided with a dustproof ventilation grille. The heat dissipation fins and the dustproof ventilation grille are existing technologies and will not be described in detail here. They can also be replaced with any existing technology structure that can achieve heat dissipation and dust prevention.

[0068] In this embodiment, the cabinet door status detection unit adopts a redundant magnetic sensing component, which includes two independent magnetic induction elements arranged parallel to the edge of the cabinet door.

[0069] In this embodiment, two independent magnetic sensing elements are two samarium cobalt magnets (10×5×3mm) embedded symmetrically on the lower edge of the cabinet door (metal material), with a spacing of 200mm. Correspondingly, two independent reed switch sensors (contact capacity DC24V / 0.5A) are installed parallel to each other on the door frame, precisely aligned with the magnets. When the cabinet door is closed, the distance between the two magnets and the reed switches is ≤2mm, triggering a synchronous output of the level signal to the central control host. The host performs a "dual-channel AND logic" check: it is only considered valid when both signals are low (door closed) or both are high (door open); if the two signal levels conflict, a sensor fault alarm is triggered. The component surface is covered with a 0.5mm thick 304 stainless steel shielding shell to withstand strong electromagnetic interference.

[0070] The device also includes a self-test feedback module, whose input is connected to the working status output of each functional module, and whose fault signal output is connected to the alarm input of the central control host.

[0071] The self-test feedback module has a built-in current sampling circuit that collects the power supply current of each functional module (positioning unit, pressure sensor, etc.) in real time, and verifies the integrity of the status data frame through CRC check.

[0072] The timed cyclic detection process is as follows: a handshake command is sent to each module every 5 seconds. If no response is received within 200ms or the current exceeds the limit (±15% of the rated value), the module is considered abnormal. The fault signal is output to the alarm input terminal of the central control host in the form of a dry contact, triggering a three-level alarm.

[0073] Level 1 Fault (Single Module Timeout): The host logs the information and continues operation.

[0074] Level 2 fault (critical module failure): Activate backup unit, audible and visual alarm.

[0075] Level 3 fault (multi-module failure): Freeze the system and disconnect the operating circuit.

[0076] The self-test feedback module visually displays the status of each unit via an LED array (red / yellow / green) and uploads the self-test report to the host via RS-485. All diagnostic data is stored encrypted and supports real-time access to historical fault records.

[0077] In this embodiment, each module is connected to the central control host via a shielded cable bundle. The outer layer of the cable bundle is provided with an electromagnetic shielding braided mesh and an anti-bending protective sleeve, which is existing technology and will not be described in detail.

[0078] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0079] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0080] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.

[0081] The technical solution of this utility model has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A safety control device for high-voltage room operations in a substation, characterized in that, include: Central control host; The personnel positioning module includes a positioning unit and an attitude sensing unit built into the safety helmet; The equipment status sensing module includes a cabinet door status detection unit and an operating handle pressure sensing unit; The environmental monitoring module includes an infrared thermal sensing unit and a visible light monitoring unit deployed in the high-pressure chamber; The directional intervention module includes an adjustable laser alarm unit and a directional acoustic warning unit installed on the top of the high-voltage cabinet; The outputs of the personnel positioning module, equipment status sensing module, and environmental monitoring module are respectively connected to the multi-channel input of the central control host. The drive end of the directional intervention module is connected to the control signal output end of the central control host.

2. The safety control device for high-voltage room operations in a substation as described in claim 1, characterized in that, The positioning unit of the personnel positioning module forms an integrated encapsulation structure with the rear liner of the safety helmet. The outer shell surface of the positioning unit is flush with the inner wall of the safety helmet, and the positioning antenna of the positioning unit is exposed on the liner surface.

3. The safety control device for high-voltage room operations in a substation as described in claim 1, characterized in that, The pressure sensing unit of the operating handle is embedded in the groove of the handle grip.

4. The safety control device for high-voltage room operations in a substation as described in claim 1, characterized in that, The adjustable laser alarm unit includes a laser source and a rotatable optical reflector group, the reflector group being driven by a stepper motor to adjust the laser projection angle.

5. A safety control device for high-voltage room operations in a substation as described in claim 1, characterized in that, The infrared thermal sensing unit and the visible light monitoring unit are mounted on a gimbal device, which is equipped with a linkage mechanism for synchronously adjusting the pitch angle of the two units.

6. The safety control device for high-voltage room operations in a substation as described in claim 1, characterized in that, The central control host casing is equipped with parallel heat dissipation fins, and the bottom surface of the central control host is equipped with a dustproof ventilation grille.

7. The safety control device for high-voltage room operations in a substation as described in claim 1, characterized in that, The directional acoustic warning unit adopts a parametric array speaker structure.

8. A safety control device for high-voltage room operations in a substation as described in claim 1, characterized in that, The cabinet door status detection unit uses a redundant magnetic sensing component, which includes two independent magnetic induction elements arranged in parallel on the edge of the cabinet door.

9. A safety control device for high-voltage room operations in a substation as described in claim 1, characterized in that, The device also includes a self-test feedback module, whose input is connected to the working status output of each functional module, and whose fault signal output is connected to the alarm input of the central control host.

10. A safety control device for high-voltage room operations in a substation as described in claim 1, characterized in that, Each module is connected to the central control host via a shielded cable bundle, the outer layer of which is provided with an electromagnetic shielding braided mesh and a bend-resistant protective sleeve.

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