Mining intrinsic safety type vehicle-mounted display screen terminal

Abstract

The utility model relates to the technical field of mining vehicle-mounted terminals, in particular to a mining intrinsic safety type vehicle-mounted display screen terminal, which comprises a screen shell seat, an anti-explosion touch screen and a terminal rear cover, and the inside of the front surface of the screen shell seat is fixedly connected with the periphery of the anti-explosion touch screen. The back surface of the screen shell seat is movably connected with the front surface of the terminal rear cover, the middle part of the lower surface of the terminal rear cover is movably connected with a wire inlet area, and a power signal cable is arranged in the wire inlet area; according to the mining intrinsic safety type vehicle-mounted terminal, the 7-inch liquid crystal display screen, the touch screen, the signal output isolation module and the ARM central processing unit module are installed in the space between the screen shell base and the terminal rear cover in a compact structure mode, the structural design size is further reduced, the mining intrinsic safety type vehicle-mounted terminal has the anti-explosion, dustproof and waterproof performance, and the mining intrinsic safety type vehicle-mounted terminal can be used in the severe environment under a mine, and is convenient to use. And the effects of compact structure, small size, light weight and low cost are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mining vehicle-mounted terminals, in particular to a mining intrinsically safe vehicle-mounted display screen terminal. Background Art

[0002] The vehicle terminal is a device installed in the vehicle with data processing and communication functions, which is used for vehicle management, information transmission and human-computer interaction. Usually, the vehicle terminal includes a display screen, a processor, a communication module and a circuit module. The intrinsically safe vehicle terminal for mining needs to have a special design of explosion-proof, impact-resistant, dust-proof and waterproof to ensure safe and reliable operation in explosive and harsh mining environments, so as to adapt to normal operation in harsh environments with extreme temperatures, high humidity and strong electromagnetic interference. However, most of the vehicle terminals currently lack explosion-proof and dust-proof capabilities, and cannot effectively deal with dust and humidity in the mining environment, which will lead to equipment failure and vehicle safety accidents. In addition, the structural design of the mining vehicle terminal is not compact enough, which will lead to large size and heavy weight, bringing difficulties to installation and use.

[0003] For example, application number CN202223005112.5 discloses a mine intrinsically safe vehicle-mounted terminal, including a protective box, a support rod, a sliding block, a spring, a connecting rod, a mounting plate, a fixed sleeve, a fixed block, a mine intrinsically safe terminal body, a display screen, an operation panel, a speaker, a connecting line, a microphone, a movable door, a snap groove, abutment strip, a lock and a fixing bolt structure. The mounting plate is pressed down to the outside of the movable connecting rod so that the sliding block squeezes the spring to buffer the mine intrinsically safe terminal body, which is used to provide good protection for the mine intrinsically safe terminal body. However, a box protection terminal is designed outside the mine intrinsically safe terminal body, which has the defects of complex structure, not compact design, large size and difficulty in vehicle installation; application number CN202121852371 .4 discloses a mining intrinsically safe vehicle-mounted terminal, including a terminal, a display mechanism, a display interface, a display screen, a network communication mechanism, a 4G module, a WIFI antenna, a 4G antenna, a UWB precise positioning mechanism, a UWB positioning module, a UWB antenna, a voice exchange mechanism, a voice exchange interface, a spring connecting line, a microphone, a button, a transmitter, a speaker, a power supply mechanism, a power supply interface, a WAN / LAN interface, an intrinsically safe power supply, a DSP chip and an alarm button structure. By integrating mobile communication technology, intercom technology, voice exchange technology, broadcasting technology and precise positioning technology in the intrinsically safe vehicle-mounted terminal, it is used in the mining industry to increase the construction safety performance of workers. However, it has the defects of high manufacturing cost and easy communication interruption caused by electromagnetic radiation interference in the mine.

[0004] Therefore, the above two utility model patents both disclose intrinsically safe vehicle-mounted terminals for mining, but in terms of design structure, there are incompatibilities in performance, structure and cost, which lead to problems. Utility Model Content

[0005] The utility model aims to provide a mining intrinsically safe vehicle-mounted display screen terminal to solve the technical problems mentioned in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model discloses a mining intrinsically safe vehicle-mounted display terminal, comprising a screen shell seat, an explosion-proof touch screen and a terminal back cover, wherein the interior of the front side of the screen shell seat is fixedly connected to the four sides of the explosion-proof touch screen, the back side of the screen shell seat is movably connected to the front side of the terminal back cover, the middle part of the lower surface of the terminal back cover is movably connected with an incoming line area, a power signal cable is arranged inside the incoming line area, screws are arranged around the mutually connected sides of the screen shell seat and the terminal back cover, an ARM central processing unit module is arranged inside the screen shell seat and the terminal back cover, a liquid crystal screen signal interface is fixedly connected to the upper surface of the ARM central processing unit module, a signal output isolation module is arranged on the side of the ARM central processing unit module, connection holes are opened around the ARM central processing unit module, and an expansion interface is arranged at the bottom of the back side of the ARM central processing unit module.

[0007] Optionally, the structure of the screen shell seat includes a front outer shell, screw grooves are opened on all four sides of the back side of the front outer shell, a sealing gasket is opened in the middle of the back side of the front outer shell, an LCD inner screen is arranged inside the sealing gasket and on the back side of the explosion-proof touch screen, an insulating mounting plate is arranged on the back side of the LCD inner screen and inside the sealing gasket, insulating plate mounting countersunk holes are fixedly connected on all four sides of the back side of the insulating mounting plate, and the ARM central processing unit module is fixed to the insulating mounting plate by screws.

[0008] Optionally, the structure of the terminal back cover includes a rear outer shell, wherein installation and fixing screw holes are provided on all four sides of the front of the rear outer shell, a countersunk hole groove is provided inside the front of the rear outer shell, a sealing gasket compression rib is provided in the middle of the front of the rear outer shell, a wire feed groove is provided in the middle of the front of the rear outer shell and directly below the installation and fixing screw holes, and a wire pressing plate is provided directly above the wire feed groove and inside the front of the rear outer shell.

[0009] Optionally, the structure of the incoming line area includes an incoming line pressure plate, both ends of the surface of the incoming line pressure plate are provided with slots, the middle of the surface of the incoming line pressure plate is provided with an incoming line hole, and the incoming line pressure plate presses the incoming line sealing gasket onto the rear outer shell.

[0010] Optionally, the screen shell seat and the terminal back cover are made of the same material, both of which are anti-static ABS / PC materials, which are anti-static, chemical resistant, high temperature resistant, easy to form and process, and have good UV resistance and weather resistance. The screen shell seat and the terminal back cover are all surrounded by rounded corners, and the limited size is used to design a compact structure and standardized size; the rounded corners reduce the pressure concentration on the edge of the box, improve the pressure resistance, impact resistance, strength and aesthetics; the size of the LCD inner screen is seven inches, and the material of the insulating mounting plate is insulating bakelite, which has excellent insulation performance, high pressure resistance, heat resistance, moisture resistance, moisture resistance, corrosion resistance and plasticity. The ARM central processing unit module is installed on the insulating bakelite to isolate the circuit board and the external shell, thereby improving the stability and anti-interference ability of the ARM central processing unit module.

[0011] Optionally, the explosion-proof touch screen is made of tempered glass, which has higher strength, heat resistance and impact resistance; the protection level of the screen shell base and the terminal back cover is IP65, and the surface insulation resistance of the screen shell base and the terminal back cover is less than 1GΩ, and it has dustproof, waterproof, explosion-proof and anti-conductive functions.

[0012] Optionally, after the power signal cable passes through the cable entry hole of the cable entry pressure plate, epoxy resin glue is used to coat and bond the connection gap, which has the characteristics of high-strength bonding, strong chemical resistance and excellent heat resistance.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] In this mining intrinsically safe vehicle-mounted display terminal, the 7-inch LCD inner screen, explosion-proof touch screen, signal output isolation module and ARM central processing unit module are compactly installed in the space between the screen shell and the terminal back cover, further reducing the structural design size. It has explosion-proof, dust-proof and waterproof properties, and can be used in the harsh environment of mines, achieving the effects of compact structure, small size, light weight and low cost.

[0015] The mine-use intrinsically safe vehicle-mounted display terminal integrates Ethernet communication interface, Bluetooth wireless communication interface, and USB communication interface. The video stream of the vehicle-mounted road safety monitoring camera can be transmitted to the vehicle-mounted display screen via Ethernet for real-time display. At the same time, Ethernet transmits real-time positioning data, and the vehicle-mounted display screen displays the underground map in real time. The vehicle-mounted display screen and the Bluetooth intercom are wirelessly connected via Bluetooth to provide real-time voice prompts to the driver with driving assistance information, and at the same time realize two-way communication between vehicles and between the ground dispatch room and vehicles. The vehicle-mounted display screen and the anti-fatigue analysis camera are connected via a USB cable. The anti-fatigue analysis camera transmits the driver's behavior and facial data to the vehicle-mounted display screen in real time. The vehicle-mounted display screen central processor module can perform AI intelligent analysis, monitor the driver's driving status in real time, and avoid fatigue driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the front structure of the mining intrinsically safe vehicle-mounted display terminal of the utility model.

[0017] Figure 2 It is a schematic diagram of the back structure of the mining intrinsically safe vehicle-mounted display terminal of the utility model.

[0018] Figure 3 It is the main side view of the explosion structure of the mining intrinsically safe vehicle-mounted display terminal of the utility model.

[0019] Figure 4 It is a back view of the explosion structure of the mining intrinsically safe vehicle-mounted display terminal of the utility model.

[0020] The accompanying drawings are marked as follows: 1. screen shell seat; 101. front outer shell; 102. screw groove; 103. sealing gasket; 104. insulating mounting plate; 105. insulating plate mounting countersunk hole; 106. LCD inner screen; 2. explosion-proof touch screen; 3. terminal back cover; 301. rear outer shell; 302. mounting fixing screw hole; 303. countersunk hole groove; 304. sealing gasket compression rib; 305. wire entry groove; 306. wire pressing plate; 4. wire entry area; 401. wire entry pressure plate; 402. slot hole; 403. wire entry hole; 404. wire entry sealing gasket; 5. power signal cable; 6. screws; 7. LCD screen signal interface; 8. signal output isolation module; 9. ARM central processing unit module; 10. connection hole; 11. expansion interface. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is described in detail below through specific embodiments.

[0022] Reference Figure 1-4As shown, the utility model discloses a mine-used intrinsically safe vehicle-mounted display terminal structure, comprising a screen shell seat 1, an explosion-proof touch screen 2 and a terminal back cover 3, and the interior of the front of the screen shell seat 1 is fixedly connected to the explosion-proof touch screen 2 on all sides, the back of the screen shell seat 1 is movably connected to the front of the terminal back cover 3, the middle of the lower surface of the terminal back cover 3 is movably connected with an incoming line area 4, a power signal cable 5 is arranged inside the incoming line area 4, screws 6 are arranged around the screen shell seat 1 and the terminal back cover 3 where they are connected to each other, an ARM central processing unit module 9 is arranged inside the screen shell seat 1 and the terminal back cover 3, a liquid crystal screen signal interface 7 is fixedly connected to the upper surface of the ARM central processing unit module 9, a signal output isolation module 8 is arranged on the side of the ARM central processing unit module 9, connection holes 10 are opened around the ARM central processing unit module 9, and an expansion interface 11 is arranged at the bottom of the back of the ARM central processing unit module 9.

[0023] Preferably, the structure of the screen shell seat 1 includes a front outer shell 101, screw grooves 102 are opened on all sides of the back side of the front outer shell 101, a sealing gasket 103 is opened in the middle of the back side of the front outer shell 101, an LCD inner screen 106 is arranged inside the sealing gasket 103 and on the back side of the explosion-proof touch screen 2, an insulating mounting plate 104 is arranged on the back side of the LCD inner screen 106 and inside the sealing gasket 103, and insulating plate mounting countersunk holes 105 are fixedly connected on all sides of the back side of the insulating mounting plate 104.

[0024] Preferably, the structure of the terminal back cover 3 includes a rear outer shell 301, and installation and fixing screw holes 302 are opened on all four sides of the front of the rear outer shell 301, a countersunk hole groove 303 is arranged inside the front of the rear outer shell 301, and a sealing gasket compression rib 304 is arranged in the middle of the front of the rear outer shell 301. A wire entry groove 305 is arranged in the middle of the front of the rear outer shell 301 and directly below the installation and fixing screw holes 303, and a wire pressing plate 306 is arranged directly above the wire entry groove 305 and inside the front of the rear outer shell 301. The pressing plate 306 is used to fix the cables to prevent them from loosening.

[0025] Preferably, the structure of the incoming line area 4 includes an incoming line pressure plate 401, both ends of the surface of the incoming line pressure plate 401 are provided with slots 402, the middle of the surface of the incoming line pressure plate 401 is provided with an incoming line hole 403, and the incoming line pressure plate 401 presses the incoming line sealing gasket 404 on the rear outer shell 301.

[0026] Preferably, the screen housing seat 1 and the terminal back cover 3 are made of the same material, both of which are anti-static ABS / PC materials, which are used to prevent electrostatic interference and protect sensitive equipment of the internal circuit when used in mines, and have the characteristics of anti-static, chemical resistance, high temperature resistance, easy molding and processing, good UV resistance, flame retardancy and weather resistance; the size of the screen housing seat 1 and the terminal back cover 3 is seven inches, and the four sides of the screen housing seat 1 and the terminal back cover 3 are rounded, and the limited size is used to design a compact and small structure and standardized size; the rounded corners reduce the pressure concentration on the edge of the box, and improve the pressure resistance, impact resistance, strength and durability; the insulating mounting plate 104 is made of insulating bakelite, which has excellent insulation performance, high pressure resistance, heat resistance, moisture resistance, moisture resistance, corrosion resistance and plasticity, and is used to provide insulation protection for the power system inside the screen housing seat 1 and the terminal back cover 3, prevent current leakage and short circuit, and ensure the safe and reliable operation of the electrical system; the ARM central processor module 9 is installed on the insulating bakelite to isolate the circuit board and the external shell, thereby improving the stability and anti-interference ability of the ARM central processor module 9.

[0027] Preferably, the explosion-proof touch screen 2 is made of tempered glass, which has higher strength, heat resistance and impact resistance, and is used to withstand large external force impact without breaking. The insulating plate mounting countersunk hole 105 is made of nitrile rubber, which has good oil resistance, wear resistance, weather resistance and oxidation resistance, and is used for sealing; the expansion interface 11 is made of 304 stainless steel, which has high strength and good corrosion resistance, and is used to withstand certain loads and pressures, providing corrosion resistance, high strength and beautiful functions; the protection level of the screen shell seat 1 and the terminal back cover 3 is IP65, and the surface insulation resistance of the screen shell seat 1 and the terminal back cover 3 is less than 1GΩ, with dustproof, waterproof, explosion-proof and anti-conductive functions, used to prevent dust, water droplets and foreign matter from entering, and easy to clean, prevent dust, water droplets and debris from invading the interior of the equipment, avoid equipment quality and safety issues, and can provide a longer service life and more reliable performance, reducing failures and repairs.

[0028] Preferably, after the power signal cable 5 passes through the wire entry hole 403 of the wire entry pressure plate 401, epoxy resin glue is used to coat and bond the connection gap. It has the characteristics of high-strength bonding, strong chemical resistance and excellent heat resistance. It is used to increase the bonding area between the power signal cable 5 and the wire entry area 4, improve the bonding strength and durability, so as to ensure the stability and reliability of the connection, and prevent moisture, dust and debris from entering, avoid damage and corrosion, and extend the service life of the connector. The wire entry hole 403 of the wire entry pressure plate 401 can be processed and adapted according to different wire diameters, so that the display screen is suitable for connection expansion of different wire diameters, while ensuring sealing.

[0029] Working principle: First, screw 6 is used to pass through the installation screw hole 302 and the screw groove 102 to align the sealing gasket 103 and the sealing gasket compression rib 304. The insulating mounting plate 104 is fixed to the front screen housing seat by screws, and the ARM central processing unit module 9 is fixed to the insulating mounting plate 104 by screws. The screen housing seat 1 and the terminal back cover 3 are closely connected. The staff installs the mining intrinsically safe vehicle-mounted display terminal in the mine car cab, and inserts the power signal cable 5 connected to the inlet hole 403 in the inlet pressure plate 401, and connects it to the inlet groove 305 on the rear outer shell 301 through the slot 402 on the inlet pressure plate 401, and is limited to the pressure plate 306. The driver can observe the liquid crystal inner screen 106 inside the sealing gasket 103 from the explosion-proof touch screen 2 in the front outer shell 101, and the liquid crystal inner screen 106 is circuit-connected to the ARM central processing unit module 9, and the system image information is displayed under the action of the liquid crystal screen signal interface 7, the signal output isolation module 8 and the expansion interface 11;

[0030] Among them, the expansion interface 11 includes an Ethernet communication interface, a Bluetooth wireless communication interface, and a USB communication interface, which are used for information transmission and interaction; the signal output isolation module 8 is used to ensure that the signal output meets the intrinsic safety requirements, so that the internal circuit system can withstand a 500V voltage loaded between the power input and the signal output.

[0031] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the utility model should be included in the protection scope of the utility model.

Claims

1. A mining intrinsically safe vehicle-mounted display terminal, comprising a screen housing seat (1), an explosion-proof touch screen (2) and a terminal back cover (3), wherein the interior of the front side of the screen housing seat (1) is fixedly connected to the periphery of the explosion-proof touch screen (2), and the back side of the screen housing seat (1) is movably connected to the front side of the terminal back cover (3), characterized in that: The middle part of the lower surface of the terminal rear cover (3) is movably connected to an input line area (4), a power signal cable (5) is arranged inside the input line area (4), screws (6) are arranged around the screen housing seat (1) and the terminal rear cover (3) where they are connected to each other, an ARM central processing unit module (9) is arranged inside the screen housing seat (1) and the terminal rear cover (3), a liquid crystal screen signal interface (7) is fixedly connected to the upper surface of the ARM central processing unit module (9), a signal output isolation module (8) is arranged on the side of the ARM central processing unit module (9), connection holes (10) are opened around the ARM central processing unit module (9), and an expansion interface (11) is arranged at the bottom of the back of the ARM central processing unit module (9).

2. The mine-use intrinsically safe vehicle-mounted display terminal according to claim 1 is characterized in that: The structure of the screen housing seat (1) comprises a front outer shell (101), the back of the front outer shell (101) is provided with screw grooves (102) all around, a sealing gasket (103) is provided in the middle of the back of the front outer shell (101), a liquid crystal inner screen (106) is arranged inside the sealing gasket (103) and on the back of the explosion-proof touch screen (2), an insulating mounting plate (104) is arranged on the back of the liquid crystal inner screen (106) and inside the sealing gasket (103), an insulating plate mounting countersunk hole (105) is arranged on the back of the insulating mounting plate (104), and an ARM central processing unit module (9) is fixed to the insulating mounting plate (104) by screws.

3. The mine-use intrinsically safe vehicle-mounted display terminal according to claim 2 is characterized in that: The structure of the terminal rear cover (3) comprises a rear outer shell (301), the front of the rear outer shell (301) is provided with countersunk hole grooves (303) on all sides, the front of the rear outer shell (301) is provided with mounting screw holes (302), the middle of the front of the rear outer shell (301) is provided with a sealing gasket compression rib (304), a wire feed groove (305) is provided in the middle of the front of the rear outer shell (301) and directly below the mounting screw holes (302), and a wire pressing plate (306) is provided directly above the wire feed groove (305) and inside the front of the rear outer shell (301).

4. The mine-use intrinsically safe vehicle-mounted display terminal according to claim 3 is characterized in that: The structure of the incoming line area (4) comprises an incoming line pressure plate (401), both ends of the surface of the incoming line pressure plate (401) are provided with slot holes (402), the middle of the surface of the incoming line pressure plate (401) is provided with an incoming line hole (403), and the incoming line pressure plate (401) presses the incoming line sealing gasket (404) on the rear outer shell (301).

5. The mine-use intrinsically safe vehicle-mounted display terminal according to claim 4 is characterized in that: The screen housing seat (1) and the terminal back cover (3) are made of the same material, both of which are anti-static ABS / PC materials, and the screen housing seat (1) and the terminal back cover (3) have rounded corners; the size of the liquid crystal inner screen (106) is seven inches, and the material of the insulating mounting plate (104) is insulating bakelite.

6. The mine-use intrinsically safe vehicle-mounted display terminal according to claim 4 is characterized in that: The material of the explosion-proof touch screen (2) is tempered glass; the protection level of the screen housing base (1) and the terminal back cover (3) is IP65, and the surface insulation resistance of the screen housing base (1) and the terminal back cover (3) is less than 1 GΩ.

7. The mine-use intrinsically safe vehicle-mounted display terminal according to claim 4 is characterized in that: After the power signal cable (5) passes through the wire entry hole (403) of the wire entry pressure plate (401), epoxy resin glue is used to apply and bond the connection gap.

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