An explosion-proof location tag

Abstract

This utility model belongs to the field of positioning equipment technology, and in particular to an explosion-proof positioning tag, including a housing. A push-button switch, two working alarm indicator lights, and five power indicator lights are fixedly connected to the upper surface of the housing. An air inlet is opened on the left side of the housing, and a duct is snapped onto the right side of the housing. An exhaust fan is installed inside the duct. A ball bearing vibration switch, a battery, a core control unit, a communication module, a power amplifier module, a voltage detection module, and a DW1000 module are fixedly connected to the inner bottom wall of the housing. A vibration motor and a temperature sensor are installed inside the housing. Through a temperature control system composed of the temperature sensor and the exhaust fan, the internal temperature of the equipment and the ambient temperature can be monitored in real time. When the temperature exceeds a threshold, the exhaust fan automatically starts to dissipate heat. Combined with the duct structure, this design ensures explosion-proof sealing while solving the problem of poor heat dissipation in traditional explosion-proof equipment, preventing circuit failure or safety hazards caused by high temperatures.

Description

Technical Field

[0001] This utility model belongs to the field of positioning equipment technology, and specifically relates to an explosion-proof positioning tag. Background Technology

[0002] In flammable and explosive hazardous environments such as chemical plants, coal mines, and oil and gas plants, accurate positioning and safety monitoring of personnel and equipment are core aspects of ensuring production safety. These scenarios place extremely high demands on the safety and reliability of positioning equipment. It is necessary to ensure that the equipment can achieve accurate positioning in complex and hazardous environments while effectively avoiding safety accidents caused by factors such as electrical sparks and high temperatures, thus providing a solid technical guarantee for safe production.

[0003] However, most existing positioning devices lack professional explosion-proof design. In flammable and explosive hazardous environments such as chemical plants, coal mines, and oil and gas plants, they are prone to safety accidents caused by factors such as electric sparks and high temperatures. At the same time, some positioning tags also have many functional defects, such as short communication distance and severe signal attenuation during long-distance transmission, crude power monitoring methods that can only simply display "low / full" status, single alarm function that relies on sound and light signals and is easily ignored in complex environments, and high equipment energy consumption that results in insufficient battery life during continuous operation. These problems make it difficult for existing equipment to achieve long-term stable operation in hazardous environments and cannot meet the actual needs of accurate positioning and safety monitoring of personnel and equipment.

[0004] To address the aforementioned issues, this application proposes an explosion-proof positioning tag. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides an explosion-proof positioning tag, which has the characteristic of improving the effectiveness of explosion-proof positioning tags.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an explosion-proof positioning tag, comprising a housing, wherein a push-button switch, two working alarm indicator lights and five power indicator lights are fixedly connected to the upper surface of the housing, an air inlet is provided on the left side of the housing, an air duct is snapped onto the right side of the housing, an exhaust fan is provided inside the air duct, a ball bearing vibration switch, a battery, a core control unit, a communication module, a power amplifier module, a voltage detection module and a DW1000 module are fixedly connected to the inner bottom wall of the housing, and a vibration motor and a temperature sensor are provided inside the housing.

[0007] As a preferred technical solution of this utility model, filter frames are fixedly connected to the left side of the housing and the right side of the air duct, and each filter frame adopts a combination structure of stainless steel metal frame and explosion-proof and dustproof mesh.

[0008] As a preferred embodiment of this utility model, the front of the housing is movably hinged with an opening and closing door, and the front of the opening and closing door is fixedly connected with a handle.

[0009] As a preferred embodiment of this utility model, a fixing ring is fixedly connected to the bottom end of the temperature sensor, and the bottom surface of the fixing ring is fixedly connected to the inner bottom wall of the housing.

[0010] As a preferred embodiment of this utility model, the bottom surface of the vibration motor is fixedly connected to a fixing frame, and the bottom surface of the fixing frame is fixedly connected to the inner bottom wall of the housing.

[0011] As a preferred embodiment of this utility model, a stabilizing frame is fixedly connected to the outer surface of the voltage detection module, and the bottom surface of the stabilizing frame is fixedly connected to the inner bottom wall of the housing.

[0012] As a preferred embodiment of this utility model, a reinforcing ring is fixedly connected to the outer surface of the air guide duct, and the right side of the reinforcing ring is fixedly connected to the inner wall of the shell.

[0013] As a preferred embodiment of this utility model, the outer surface of the exhaust fan is fixedly connected to two fixing rods, and the ends of the two fixing rods that are far apart from each other are fixedly connected to the inner wall of the air guide pipe.

[0014] Compared with existing technologies, the beneficial effects of this utility model are as follows: By setting up a temperature control system composed of a temperature sensor and an exhaust fan, the internal temperature of the equipment and the ambient temperature can be monitored in real time. When the temperature exceeds the threshold, the exhaust fan is automatically activated to dissipate heat. Combined with the air duct structure, the problem of poor heat dissipation in traditional explosion-proof equipment is solved while ensuring explosion-proof sealing, avoiding circuit failure or safety hazards caused by high temperature. By setting a ball bearing vibration switch in the housing, intelligent energy consumption control of "movement wake-up and static sleep" can be realized. Combined with the dual-core circuit design, the idle energy consumption of the equipment is reduced and the battery life is extended. By setting up a linkage mechanism between the vibration motor and the button switch, it supports SOS one-button alarm and upper computer broadcast vibration reminder, solving the problem that traditional sound and light alarms are easily ignored in complex environments and improving emergency response safety. Through the cooperation of 5-level power indicator lights and voltage detection module, accurate gradient display of power and low power alarm are realized to avoid equipment failure due to insufficient power. In addition, the core control unit, communication module and other modules are fixedly connected to the bottom wall of the housing, which enhances the structural stability of the equipment in the vibration environment and ensures long-term reliable operation. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the shell structure in this utility model; Figure 3 This is a schematic diagram of the structure of the vibration motor in this utility model; Figure 4 This is a schematic diagram of the voltage detection module in this utility model; Figure 5 This is a schematic diagram of the air duct structure in this utility model; Figure 6 This is a schematic diagram of the structure of the exhaust fan in this utility model; Figure 7 This is a schematic diagram of the temperature sensor in this utility model; In the diagram: 1. Housing; 2. Filter frame; 3. Working alarm indicator light; 4. Push button switch; 5. Power indicator light; 6. Air inlet; 7. Ball bearing vibration switch; 8. Fixing ring; 9. Handle; 10. Opening / closing door; 11. Temperature sensor; 12. Battery; 13. Fixing frame; 14. Vibration motor; 15. DW1000 module; 16. Voltage detection module; 17. Stabilizing frame; 18. Power amplifier module; 19. Core control unit; 20. Communication module; 21. Exhaust fan; 22. Air duct; 23. Reinforcing ring; 24. Fixing rod. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0017] Please see Figure 1-7 The present invention provides the following technical solution: an explosion-proof positioning tag, including a shell 1, a push button switch 4, two working alarm indicator lights 3 and five power indicator lights 5 are fixedly connected to the upper surface of the shell 1, an air inlet 6 is opened on the left side of the shell 1, an air duct 22 is snapped onto the right side of the shell 1, an exhaust fan 21 is installed inside the air duct 22, a ball vibration switch 7, a battery 12, a core control unit 19, a communication module 20, a power amplifier module 18, a voltage detection module 16 and a DW1000 module 15 are fixedly connected to the inner bottom wall of the shell 1, and a vibration motor 14 and a temperature sensor 11 are installed inside the shell 1; In this embodiment, the housing 1 is made of explosion-proof material, and its structural design meets the explosion-proof requirements of ExiaIICT4Ga and ExibIICT130℃Db, which can effectively prevent safety accidents caused by electric sparks, high temperatures and other factors in flammable and explosive environments. At the same time, the exhaust fan 21 and the temperature sensor 11 work together. When the temperature sensor 11 detects that the internal temperature of the housing 1 exceeds the threshold, the exhaust fan 21 is automatically started. The exhaust fan forms a heat dissipation channel through the air duct 22 and the air inlet 6 to achieve active heat dissipation, which solves the problem of poor heat dissipation in traditional explosion-proof equipment. In addition, the ball vibration switch 7 can detect the equipment in real time. In standby mode, the device triggers a sleep mode when stationary, reducing energy consumption and extending the battery life of the storage battery 12. In addition, the core control unit 19 and the DW1000 module 15 form a dual-core system, which, together with the power amplifier module 18, enables UWB long-distance communication and precise positioning. The working alarm indicator 3 can provide real-time feedback on communication status and alarm information. The five power indicator lights 5 work with the voltage detection module 16 to achieve precise gradient display of power level. The vibration motor 14 is linked with the button switch 4 to support SOS one-button alarm and upper computer broadcast vibration reminder, improving the safety and reliability of emergency response.

[0018] Specifically, filter frames 2 are fixedly connected to the left side of the housing 1 and the right side of the air duct 22. Each filter frame 2 adopts a combination structure of stainless steel metal frame and explosion-proof dustproof net. In this embodiment, through this structural design, the stainless steel metal frame provides high-strength support and can withstand temperature changes of -40℃ to 120℃ and daily impact. The explosion-proof dustproof net is made of nickel-copper alloy with a pore size of 0.1mm, which can effectively intercept dust particles, liquid droplets and debris with a diameter ≥0.5mm in the environment, preventing them from entering the equipment and affecting the circuit operation, while not obstructing air circulation and ensuring that the heat dissipation efficiency of the exhaust fan 21 is not affected. At the same time, high-temperature resistant silicone rubber sealing rings are added to the connection between the frame and the housing 1 and the air duct 22, which further enhances the explosion-proof sealing performance and meets the protection requirements of hazardous environments.

[0019] Specifically, the front of the housing 1 is hinged to an opening and closing door 10, and the front of the opening and closing door 10 is fixedly connected to a handle 9. In this embodiment, through this structural design, the opening and closing door 10 is made of the same explosion-proof material as the housing 1, and the hinge is equipped with an explosion-proof hinge and a sealing strip. When closed, it can achieve an IP65 protection level, which can prevent external dust and moisture from entering and ensure that the overall explosion-proof performance of the equipment is not affected. At the same time, the handle 9 adopts an anti-slip protrusion design, which makes it easy to open and close quickly when wearing gloves or in a humid environment. By opening the opening and closing door 10, the battery 12 can be charged directly, which greatly improves the convenience of maintenance.

[0020] Specifically, a fixing ring 8 is fixedly connected to the bottom of the temperature sensor 11. The bottom surface of the fixing ring 8 is fixedly connected to the inner bottom wall of the housing 1. In this embodiment, the fixing ring 8, made of polytetrafluoroethylene insulating material, rigidly fixes the temperature sensor 11 to the inner bottom wall of the housing 1, preventing the sensor from shifting or making poor contact when the equipment vibrates. At the same time, the hollow structure of the fixing ring 8 reduces the influence of the housing 1's own temperature on the sensor's detection accuracy, ensuring that the temperature sensor 11 can accurately collect the internal air temperature of the equipment and provide reliable data support for the temperature control system.

[0021] Specifically, a fixing frame 13 is fixedly connected to the bottom surface of the vibration motor 14. The bottom surface of the fixing frame 13 is fixedly connected to the inner bottom wall of the housing 1. In this embodiment, the fixing frame 13 is designed with an elastic buffer structure to rigidly connect the vibration motor 14 and the housing 1. This not only amplifies the transmission efficiency of the vibration signal, making the vibration reminder easier for the wearer to perceive, but also absorbs excess vibration energy through the internal damping layer, preventing the high-frequency vibration of the motor from interfering with or loosening the surrounding circuit components (such as the core control unit 19 and the DW1000 module 15), thus ensuring the overall stability of the device.

[0022] Specifically, a stabilizing frame 17 is fixedly connected to the outer surface of the voltage detection module 16. The bottom surface of the stabilizing frame 17 is fixedly connected to the inner bottom wall of the housing 1. In this embodiment, the stabilizing frame 17 is a U-shaped stabilizing frame made of aluminum alloy to form a three-dimensional wrapping fixation for the voltage detection module 16. Its inner wall fits the outline of the module and is equipped with insulating pads, which not only enhances the impact resistance of the module in the vibration environment, but also avoids the risk of electrical conductivity between the module and the housing 1, ensuring that the voltage detection module 16 can stably collect the voltage data of the battery 12 and ensure the accuracy of the power display and low power alarm functions.

[0023] Specifically, a reinforcing ring 23 is fixedly connected to the outer surface of the air duct 22. The right side of the reinforcing ring 23 is fixedly connected to the inner wall of the housing 1. In this embodiment, the reinforcing ring 23 is designed with a ring-shaped metal structure to fix the air duct 22 to the inner wall of the housing 1 for a second time. Together with the snap-fit ​​structure between the air duct 22 and the housing 1, a double stabilization is formed to prevent the air duct 22 from loosening or shifting due to the vibration generated when the exhaust fan 21 is working. At the same time, a shock-absorbing rubber ring is installed between the inner side of the reinforcing ring 23 and the air duct 22 to further reduce noise and vibration transmission and improve the stability of equipment operation.

[0024] Specifically, two fixing rods 24 are fixedly connected to the outer surface of the exhaust fan 21. The ends of the two fixing rods 24 that are far apart from each other are fixedly connected to the inner wall of the air guide duct 22. In this embodiment, by setting the fixing rods 24, the exhaust fan 21 is suspended and fixed at the center of the air guide duct 22 by symmetrically distributed metal fixing rods 24. This avoids the resonance noise caused by direct contact between the fan shell and the air guide duct 22, and ensures that the fan blades and the inner wall of the air guide duct 22 maintain a uniform gap, maximizing the air flow cross section and improving heat dissipation efficiency. The connection between the fixing rods 24 and the exhaust fan 21 adopts an elastic buckle design, which facilitates the disassembly and maintenance of the fan.

[0025] The working principle and usage process of this utility model are as follows: When using this utility model, the explosion-proof positioning tag must first be installed on the designated position of the personnel protective equipment or equipment using a special buckle or strap. Ensure that the explosion-proof sealing strip of the housing 1 is undamaged and that the explosion-proof rating markings (ExiaIICT4Ga and ExibIICT130℃Db) are clearly identifiable to meet the safety access requirements for flammable and explosive environments. When the tag shifts due to personnel movement or equipment operation, the internal ball vibration switch 7 is triggered by the ball rolling, sending a signal to the core control unit 19 (HC32L130J8T). Chip A sends a high-level wake-up signal, and the chip completes initialization within 50ms, sequentially activating components such as DW1000 module 15 and power amplifier module 18. At this time, under the signal enhancement of power amplifier module 18 (gain 12dB), DW1000 module 15 transmits UWB pulse signals to the positioning base station with a bandwidth of 4MHz, achieving a positioning accuracy of ±10cm through the TOF ranging algorithm. The working alarm indicator 3 flashes at a frequency of 1Hz to indicate that the communication link is normal. During the tag's operation, temperature sensor 11 (accuracy ±0.5℃) operates with a period of 200ms. The internal temperature of housing 1 is collected. When the detected value exceeds 65℃, the core control unit 19 immediately outputs a PWM signal to drive the exhaust fan 21 (speed 2800rpm) to start. Air is drawn in through the left air inlet 6 and discharged through the air duct 22. During this process, the 0.1mm nickel-copper alloy explosion-proof and dustproof mesh of the filter frame 2 can intercept dust particles with a diameter ≥0.5mm. The ventilation volume reaches 5L / min. After the internal temperature of housing 1 drops below 55℃ within 3 minutes, the exhaust fan 21 automatically stops. If the label remains still for more than 3 minutes, the ball vibration switch 7 disconnects the circuit due to ball reset. The core control unit 19 enters a low-power mode, shutting down unnecessary components such as the DW1000 module 15, retaining only the voltage detection module 16 (sampling rate 10Hz) and the vibration wake-up circuit. At this time, the overall power consumption drops to 0.08mA, and the battery 12 (2000mAh) can provide a relatively long battery life. In terms of power management, the voltage detection module 16 monitors the voltage at the battery 12 terminals in real time, and the core control unit 19 maps the voltage value to a five-level power indicator. When the voltage is ≤3.4V, one power indicator light 5 is lit; when the voltage is ≥4.1V, all five lights are lit; when the voltage is <3.4V, all lights are lit.At 3V, the low battery indicator light remains constantly on. Simultaneously, the DW1000 module 15 sends a low battery alarm frame (including device ID and coordinates) to the host computer at a frequency of 5Hz. In an emergency, pressing and holding button switch 4 (≥3 seconds) triggers the SOS alarm program. The core control unit 19 controls the vibration motor 14 to vibrate at a frequency of 120 times / minute. Simultaneously, the DW1000 module 15 sends an encrypted alarm signal. Upon receiving this signal, the host computer can broadcast a command to activate the tag vibration motor 14, enabling two-way emergency interaction. During maintenance, the IP65-rated opening and closing door 10 can be opened via the anti-slip handle 9. The battery is charged by connecting to a 5V power supply. During charging, the voltage detection module 16 monitors the battery voltage in real time. The power indicator light 5 illuminates sequentially according to the 20% charging progress. After fully charged, it remains constantly lit for 30 minutes before automatically switching to sleep mode. The exhaust fan 21 is suspended and fixed to the center of the air duct 22 (1.5mm away from the duct wall) by symmetrically distributed fixing rods 24. The reinforcing ring 23 outside the air duct 22 is secondary fixed to the inner wall of the housing 1 by three M3 screws. Combined with internal damping pads, it can withstand a vibration acceleration of 50m / s², ensuring continuous and stable operation of the equipment in environments with severe vibrations, such as underground coal mines.

[0026] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An explosion-proof location tag, characterized by: The housing (1) includes a housing (1), on the upper surface of which a push button switch (4), two working alarm indicator lights (3) and five power indicator lights (5) are fixedly connected. An air inlet (6) is opened on the left side of the housing (1), and a duct (22) is snapped onto the right side of the housing (1). An exhaust fan (21) is installed inside the duct (22). A ball bearing vibration switch (7), a battery (12), a core control unit (19), a communication module (20), a power amplifier module (18), a voltage detection module (16) and a DW1000 module (15) are fixedly connected to the inner bottom wall of the housing (1). A vibration motor (14) and a temperature sensor (11) are installed inside the housing (1).

2. The explosion-proof location tag of claim 1, wherein: The left side of the housing (1) and the right side of the air duct (22) are both fixedly connected to filter frames (2), and each filter frame (2) adopts a combination structure of stainless steel metal frame and explosion-proof dustproof net.

3. The explosion-proof location tag of claim 1, wherein: The front of the housing (1) is movably hinged to an opening and closing door (10), and the front of the opening and closing door (10) is fixedly connected to a handle (9).

4. The explosion-proof positioning tag according to claim 1, characterized in that: The bottom end of the temperature sensor (11) is fixedly connected to a fixing ring (8), and the bottom surface of the fixing ring (8) is fixedly connected to the inner bottom wall of the housing (1).

5. The explosion-proof location tag of claim 1, wherein: The bottom surface of the vibration motor (14) is fixedly connected to a fixing frame (13), and the bottom surface of the fixing frame (13) is fixedly connected to the inner bottom wall of the housing (1).

6. The explosion-proof location tag of claim 1, wherein: The outer surface of the voltage detection module (16) is fixedly connected to a stabilizing frame (17), and the bottom surface of the stabilizing frame (17) is fixedly connected to the inner bottom wall of the housing (1).

7. The explosion-proof location tag of claim 1, wherein: A reinforcing ring (23) is fixedly connected to the outer surface of the air duct (22), and the right side of the reinforcing ring (23) is fixedly connected to the inner wall of the shell (1).

8. The explosion-proof location tag of claim 1, wherein: The outer surface of the exhaust fan (21) is fixedly connected to two fixing rods (24), and the ends of the two fixing rods (24) that are far apart from each other are fixedly connected to the inner wall of the air duct (22).

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