Engineering vehicle night anti-theft alarm device based on Internet of Things technology

Abstract

The invention relates to an engineering vehicle night anti-theft alarm device based on the Internet of Things technology, which is applied to the anti-theft field, the device senses the oil level change through a floating ball and other structures to judge whether an oil product is stolen or not, and when the oil product is sensed to be stolen, damaged particles are automatically released, so that the oil product is dyed and mixed with particles in the extraction process, and the oil product is prevented from being stolen. The oil products cannot be reused after being polluted, an oil stealing and reselling chain is thoroughly cut off, the rigid countering effect that the oil products are useless after being stolen is formed, the occurrence probability of oil product stealing events is fundamentally reduced, oil product safety is effectively improved, and through the arrangement of a storage shell and the like, damaged particles are broken due to high-speed shearing or extrusion after being pumped into an oil stealing pump to release pollution liquid and abrasive particles, and the oil stealing and reselling efficiency is improved. According to the oil well pump anti-theft device, long-term purity of oil products of an engineering vehicle is guaranteed, a theft path is accurately struck, the oil well pump of a thief can be damaged by filling the pollution liquid with the damage particles, the double effects of immediate punishment and continuous damage are achieved, and the occurrence probability of oil product theft events is further reduced.

Description

Technical Field

[0001] The present invention relates to an anti-theft alarm device, in particular to an Internet of Things technology-based nighttime anti-theft alarm device for engineering vehicles applied in the field of anti-theft. Background Art

[0002] When construction vehicles are parked at construction sites, roadsides or remote construction areas at night, they often become high-risk targets for oil theft due to lack of supervision.

[0003] Chinese patent application publication number CN114333195A discloses an anti-theft alarm. By using a vibration sensor, a patch pressure sensor, a camera and a pyroelectric infrared sensor in conjunction with each other, the anti-theft effect and the accuracy of the anti-theft alarm are improved, and remote alarms are combined with on-site alarms, so that users can learn about vehicle theft information in a timely manner even if they are not around the vehicle.

[0004] Chinese patent application with publication number CN106314133A discloses a truck fuel tank anti-theft alarm, which plays an anti-theft role by operating the alarm device and emitting an alarm sound.

[0005] The existing alarm system is only used to warn people, especially in remote areas. Thieves often ignore the alarm device and continue to steal, which is unable to reduce theft in essence. Summary of the Invention

[0006] To solve the above problems, the present invention provides an anti-theft alarm device for engineering vehicles at night based on the Internet of Things technology, comprising an anti-theft fuel tank, the anti-theft fuel tank comprising a sensing unit, a driving unit, a mobile terminal, an Internet of Things communication unit, and a destruction unit, wherein the sensing unit and the driving unit are electrically connected, and the driving unit and the destruction unit are both electrically connected to the mobile terminal via the Internet of Things communication unit; The destroying unit includes a mounting plate, which is fixedly connected to the inner wall of the anti-theft oil tank, and the side wall of the mounting plate is fixedly connected with an active tube and a passive tube, and the inside of the active tube and the passive tube are respectively slidably connected with a driving piston and a linkage piston, and the top of the driving piston is fixedly connected with a connecting rod, and the top of the connecting rod is fixedly connected with a rack, and the side wall of the mounting plate is rotatably connected with a rotating shaft, which is located on the upper side of the active tube, and one end of the rotating shaft is fixedly connected with a gear and a rotating rod, and one end of the rotating rod is fixedly connected with a floating ball, and the bottom ends of the active tube and the passive tube are both connected with a head cover, and the head cover is fixedly connected to the mounting plate A disc is provided between the two head covers, and a plurality of through holes are opened in the middle of the disc. A bellows is fixedly connected between the head cover and the disc, and a push-pull rod is fixedly connected to the bottom end of the disc. The side wall of the mounting plate is fixedly connected to a storage frame, and the storage frame is located at the lower side of the disc. One end of the push-pull rod is fixedly connected to a sealing cover matching the storage frame. Destructive particles are filled between the storage frame and the sealing cover. The interior of the float and the passive tube is filled with transmission fluid. The side walls of the storage frame and the sealing cover are respectively fixedly connected with a tension sensor and an elastic rope, and one end of the elastic rope is fixedly connected to the tension sensor.

[0007] As a further improvement of the present application, a sliding rod is fixedly connected between the bottom ends of the two head covers, and the sliding rod passes through the push-pull rod and is slidably connected thereto.

[0008] As a further improvement of the present application, the destruction particle includes a storage shell and a contamination liquid.

[0009] As a further improvement of the present application, the storage shell is composed of a protective layer and a leak-proof layer, and the contaminated liquid is composed of a colorant and grinding balls.

[0010] As another improvement of the present application, the protective layer is set to be one of polyimide or polycarbonate, and the leak-proof layer is set to be one of polyurethane or polylactic acid.

[0011] As another improved supplement of the present application, the colorant is set to be one of oil-soluble alkaline blue, oil-soluble methylene blue, or oil-soluble gentian violet.

[0012] As another improved supplement of the present application, the grinding balls are configured as one of aluminum oxide particles, corundum, or sodium silicate glass microbeads.

[0013] As another improvement of the present application, the anti-theft fuel tank also includes an air anti-theft module, which is electrically connected to the destruction unit. The air anti-theft module includes an upper frame, and an air pump is fixedly connected to the interior of the upper frame. The two ends of the air pump are respectively fixedly connected to an air suction pipe and an exhaust pipe.

[0014] As another improvement of the present application, the bottom end of the anti-theft oil tank is fixedly connected to multiple bottom pipes, the outer wall of the bottom pipe is fixedly connected to multiple branch pipes, one end of the branch pipe is fixedly connected to a nozzle, and the outer wall of the branch pipe is fixedly connected to a check valve.

[0015] As another improvement of the present application, the driving unit includes a warning light and a buzzer, and the sensing unit includes an infrared sensing module and a vibration sensing module.

[0016] In summary, this device uses structures such as a float to sense oil level changes to determine whether the oil has been stolen. When it senses that the oil has been stolen, it automatically releases destructive particles, causing the oil to be dyed and mixed with particulate matter during the extraction process. The contaminated oil cannot be reused, completely cutting off the chain of oil theft and resale, forming a rigid counter-measure effect that theft is useless, fundamentally reducing the probability of oil theft and effectively improving oil safety.

[0017] Through settings such as storage shells, the damaged particles only release contaminated liquid and abrasive particles due to high-speed shearing or extrusion after being pumped into the oil theft pump. This not only ensures the long-term purity of engineering vehicle oil, but also accurately combats theft routes.

[0018] Through the setting of contaminated liquid, etc., the contaminated liquid uses high-contrast dyes such as oil-soluble alkaline blue, methylene blue, and gentian violet. The color difference of the oil is obvious after contamination, and it is difficult to restore it to its original state by dilution and filtration. It has strong identifiability and irreversibility, effectively preventing thieves from reselling or using it for their own benefit.

[0019] By filling the contaminated liquid with destructive particles, the high-speed operation of the oil pump can cause wear, blockage or impact damage to the core parts such as the impeller and sleeve, and even induce cavitation, resulting in reduced pump efficiency, severe heating or direct failure. It has the dual effects of immediate punishment and continuous damage, further reducing the probability of oil theft.

[0020] By setting up the air anti-theft module, the air pump can be started when the oil tank level drops rapidly, and the gas can be injected into the oil through the bottom nozzle, forming a continuous bubble disturbance. The oil pump of the oil thief will inhale a large amount of air, resulting in reduced oil extraction efficiency and increased cavitation, which will further damage the oil extraction equipment. This structure strengthens the mechanical destruction effect, forms a physical blockage, and once again reduces the probability of oil theft.

[0021] By connecting the sensing unit to the driving unit and the destroying unit through the IoT communication module and connecting them to the mobile terminal, users can remotely obtain the status of the fuel tank, including whether there is abnormal approach, whether it is being stolen, and whether the fuel destruction mechanism is triggered. This enhances information transparency and remote response capabilities, and facilitates safety management at night or in remote scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a connection structure diagram of the Internet of Things communication unit in the first and second embodiments of this application; Figure 2 This is a three-dimensional cross-sectional view of the anti-theft fuel tank in the first and second embodiments of this application. Figure 3This is a three-dimensional diagram of the active pipe in the first and second embodiments of the present application; Figure 4 This is a three-dimensional cross-sectional view of the active pipe in the first and second embodiments of the present application; Figure 5 This is a three-dimensional cross-sectional view of the storage frame in the first and second embodiments of the present application; Figure 6 This is a front cross-sectional view of a particle destruction portion in the second embodiment of the present application; Figure 7 This is a front cross-sectional view of the storage shell in the second embodiment of the present application.

[0023] Description of the numbers in the figure: 1. Anti-theft fuel tank; 2. Mounting plate; 201. Active pipe; 202. Passive pipe; 203. Drive piston; 204. Linkage piston; 205. Connecting rod; 206. Rack; 207. Rotating shaft; 208. Gear; 209. Rotating rod; 210. Float; 211. Head cover; 212. Disc; 213. Through hole; 214. Bellows; 215. Push-pull rod; 216. Storage frame ; 217, sealing cover; 218, tension sensor; 219, elastic rope; 220, slide rod; 3, storage shell; 301, protective layer; 302, leak-proof layer; 4, contaminated liquid; 401, color agent; 402, grinding balls; 5, upper frame; 501, air pump; 502, exhaust pipe; 503, exhaust pipe; 504, bottom pipe; 505, branch pipe; 506, nozzle; 507, check valve. DETAILED DESCRIPTION

[0024] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0025] The first implementation method: Figure 1-Figure 5 The present invention shows a nighttime anti-theft alarm device for engineering vehicles based on the Internet of Things technology, including an anti-theft fuel tank 1. The anti-theft fuel tank 1 includes a sensing unit, a driving unit, a mobile terminal, an Internet of Things communication unit, and a destruction unit. The sensing unit and the driving unit are electrically connected, and the driving unit and the destruction unit are both electrically connected to the mobile terminal via the Internet of Things communication unit. The destroying unit includes a mounting plate 2, which is fixedly connected to the inner wall of the anti-theft oil tank 1, and the side wall of the mounting plate 2 is fixedly connected with an active tube 201 and a passive tube 202, and the insides of the active tube 201 and the passive tube 202 are respectively slidably connected with a driving piston 203 and a linkage piston 204, and the top of the driving piston 203 is fixedly connected with a connecting rod 205, and the top of the connecting rod 205 is fixedly connected with a rack 206, and the side wall of the mounting plate 2 is rotatably connected with a rotating shaft 207, which is located on the upper side of the active tube 201, and one end of the rotating shaft 207 is fixedly connected with a gear 208 and a rotating rod 209, and one end of the rotating rod 209 is fixedly connected with a floating ball 210, and the bottom ends of the active tube 201 and the passive tube 202 are both connected with a head cover 211, and the head cover 211 is fixedly connected to the mounting plate 2. A disc 212 is provided between the head covers 211, and a plurality of through holes 213 are opened in the middle of the disc 212. A bellows 214 is fixedly connected between the head covers 211 and the disc 212. A push-pull rod 215 is fixedly connected to the bottom end of the disc 212. A storage frame 216 is fixedly connected to the side wall of the mounting plate 2. The storage frame 216 is located at the lower side of the disc 212. One end of the push-pull rod 215 is fixedly connected to a sealing cover 217 matching the storage frame 216. Destructive particles are filled between the storage frame 216 and the sealing cover 217. The interior of the float 210 and the passive tube 202 is filled with transmission fluid. The side walls of the storage frame 216 and the sealing cover 217 are respectively fixedly connected with a tension sensor 218 and an elastic rope 219. One end of the elastic rope 219 is fixedly connected to the tension sensor 218.

[0026] When refueling the anti-theft oil tank 1, the float 210 floats up under the action of buoyancy. When the float 210 floats up, it drives the gear 208 to rotate clockwise through the rotating shaft 207. After the gear 208 rotates clockwise, it drives the driving piston 203 to move downward through the rack 206 and the connecting rod 205. When the driving piston 203 moves downward, it pushes the transmission fluid through the through hole 213 to move into the interior of the passive tube 202. When the transmission fluid passes through the through hole 213, it drives the disc 212 to move rightward. When the disc 212 moves to the right, it contacts the storage frame 216, and does not release the destructive particles outward.

[0027] On the contrary, in the daily use of the engineering vehicle, the oil in the anti-theft oil tank 1 slowly decreases, and the float 210 also slowly decreases. After the float 210 decreases, it drives the driving piston 203 to move upward. At this time, the transmission fluid in the passive tube 202 is transmitted to the inside of the active tube 201 through the through hole 213. The flow rate of the transmission fluid is slow, and it cannot push the disc 212 to move to the left, nor will it release the destructive particles in the storage frame 216 to the outside.

[0028] However, when someone steals the oil in the anti-theft oil tank 1, the oil level in the anti-theft oil tank 1 drops rapidly, causing the float 210 to drop rapidly as well, increasing the flow rate of the transmission fluid in the passive tube 202 through the through hole 213, driving the disc 212 to move leftward. After the disc 212 moves leftward, it drives the sealing cover 217 away from the storage frame 216, mixing the destructive particles with the oil. After the mixture, the oil in the tank is destroyed, making it impossible for the thief to use the stolen oil.

[0029] When the sealing cover 217 moves in a direction away from the storage frame 216, the tension applied to the tension sensor 218 increases, indicating that someone is stealing the oil, so that the anti-theft oil tank can be identified by the destruction unit.

[0030] The above arrangement can make the oil stolen by thieves have no use value, and can play a better anti-theft effect on the oil in the long run.

[0031] The sensing unit is used to identify whether there is anyone approaching the fuel tank. When someone approaches the anti-theft fuel tank within 2 meters and stays for more than ten seconds, the driving away unit is triggered, and the driving away unit emits sound and light to drive away.

[0032] The destroyer unit can send information about whether the anti-theft fuel tank is being stolen and the operation information of the driving unit to the mobile terminal through the Internet of Things communication unit, and the user can obtain the status of the anti-theft fuel tank in real time through the mobile terminal.

[0033] The driving unit includes a warning light and a buzzer, and the sensing unit includes an infrared sensing module and a vibration sensing module.

[0034] Second implementation method: Figure 1-Figure 7 A nighttime anti-theft alarm device for engineering vehicles based on Internet of Things technology is shown. Unlike the first embodiment, a sliding rod 220 is fixedly connected between the bottom ends of the two head covers 211. The sliding rod 220 passes through the push-pull rod 215 and is slidably connected thereto. Through the above arrangement, the sliding rod 220 can guide the movement of the push-pull rod 215, thereby improving the stability of the movement of the sealing cover 217.

[0035] The destructive particles include a storage shell 3 and a contaminated liquid 4. Thieves usually use an oil pump to commit theft. The storage shell 3 is wrapped around the outside of the contaminated liquid 4, which can prevent the contaminated liquid 4 from contaminating the anti-theft oil tank 1. When the destructive particles connect the oil and are sucked into the oil pump, the storage shell 3 ruptures inside the pump body and releases the contaminated liquid 4. Through the above arrangement, the contaminated liquid 4 can be prevented from contaminating the anti-theft oil tank 1, and instead targets the thief's oil tank, thereby preserving one's own oil and making the oil thief pay the price.

[0036] The storage shell 3 is composed of a protective layer 301 and a leak-proof layer 302, and the contaminated liquid 4 is composed of a colorant 401 and grinding balls 402. The protective layer 301 is stable for a long time in the anti-theft oil tank, does not leak, and does not dissolve. It is broken by shearing, squeezing, and high-speed rotation during the operation of the oil pump. The leak-proof layer 302 can wrap the colorant, and the colorant 401 can pollute the oil. The grinding balls 402 can cause cavitation in the oil pump, making the thief's oil pump unstable. The grinding balls 402 can rub and wear the impeller and sealing surface, causing physical damage to the pump, a sharp drop in efficiency, severe heat generation, increased noise, and failure in a short period of time.

[0037] The protective layer 301 is configured to be made of polyimide or polycarbonate, and the anti-leakage layer 302 is configured to be made of polyurethane or polylactic acid.

[0038] Polyimide is an engineering plastic with extremely high comprehensive performance, featuring excellent heat resistance (long-term resistance to 260°C), antioxidant properties, and corrosion resistance to nearly all organic solvents (such as gasoline and diesel). It can remain stable in oil for long periods without softening or cracking, making it particularly suitable for anti-theft fuel tank protection applications in harsh environments. As a capsule shell, it ensures no leakage or degradation during storage, improving system safety and making it suitable as the outer layer material for high-end capsules.

[0039] Polycarbonate is a transparent engineering plastic that combines high strength with moderate brittleness. It can withstand oil environments (gasoline, diesel) for long periods of time without swelling or deformation. It has good processability, allowing the design of thin-walled structures and directional weaknesses. It can be impacted or sheared and ruptured after entering the oil pump, releasing internal pollutants. Its controllable rupture characteristics make it very suitable for use as the shell of actively triggered anti-theft capsules, achieving the dual goals of "steady-state existence plus rupture within the pump."

[0040] Polyurethane material has good flexibility, adhesion and oil resistance. Structurally, it can be used as the inner shell or sealing layer of the capsule to prevent the contents from leaking out and maintain the integrity of the internal structure. It can also be used to control the buoyancy of the capsule or coat the filler so that the pollutants can be stably released and fully diffused after rupture. As an auxiliary packaging or intermediate buffer material, polyurethane can effectively improve the compatibility and release efficiency of the capsule in oil products.

[0041] Polylactic acid is a biodegradable material derived from plant starch. It has moderate hardness and brittleness, good stability in oil environments, sensitive rupture triggering, and little impact on the environment. Its controllable degradability and physical brittleness make it suitable for use in disposable protective devices. For example, it will rupture and automatically degrade when sheared in an oil pump. It is also suitable for batch low-cost manufacturing and can be used in non-recyclable anti-theft scenarios. As a disposable capsule shell, it is a green and environmentally friendly economic option.

[0042] The colorant 401 is set to be one of oil-soluble basic blue, oil-soluble methylene blue, or oil-soluble gentian violet.

[0043] Oil-soluble basic blue is a high-strength alkaline dye with extremely high tinting strength and oil-phase diffusibility. Even a small amount can dye an entire barrel of diesel or gasoline a distinct dark blue. It has good light resistance and stability, is not easily degraded or precipitated in oil, and is one of the preferred dyes for anti-theft pollution. Once contaminated, the oil cannot be removed by visual screening, and has a strong visual deterrent and irreversible destructive properties.

[0044] Methylene blue (methylene blue) is a classic oil-soluble dye that produces a dark blue or bluish-purple hue after dyeing. It diffuses rapidly in non-polar solvents such as gasoline and diesel and is stable to contamination. It has good chemical inertness, does not react with fuel, and is highly safe. It is suitable for use in capsule dyes that require long-term storage. It is an environmentally friendly, easy-to-use, and highly traceable dyeing ingredient.

[0045] Oil-soluble gentian violet is a bright purple-red color with a highly recognizable stain. Only a trace amount is needed to cause a significant color change in the oil, which is extremely visually impactful. Its molecular structure is stable, and it is light-resistant, heat-resistant, and does not stratify in the oil. After contamination, it is difficult to restore to its original state through filtering or dilution. Because its color is very different from the normal color of fuel, it is particularly suitable for creating a highly warning and irreversible pollution effect.

[0046] The grinding balls 402 are configured to be one of aluminum oxide particles, corundum particles, or sodium silicate glass beads.

[0047] Alumina particles are a type of high-hardness, wear-resistant ceramic powder with a Mohs hardness of up to 9, second only to diamond. After entering the oil pump, these particles move at high speed in the pump body, which can aggravate the wear of the rotor, impeller and pump chamber wall, leading to a sharp drop in pump efficiency, heat, jamming and even scrapping. As a pump-destroying filler, it provides a long-term abrasive destruction mechanism with significant destructive power.

[0048] Carborundum is an ultra-hard granular material with silicon carbide as its main component. It has a hardness of up to 9.5 on the Mohs scale and is widely used in the grinding and cutting industries. When used in anti-theft capsules, it can form strong friction in the pump cavity, causing rapid wear and even etching of metal or plastic pump components. Compared with aluminum oxide, carborundum is more destructive and faster, and is suitable for high-intensity countermeasures.

[0049] Sodium silicate glass beads are hollow or solid, high-density brittle particles with strong inertial impact resistance and controllable fracture. When sucked into the oil pump along with the oil flow, these beads can collide with the pump impeller and the cavity, causing physical damage. At the same time, they shatter into tiny sharp glass slag, scratching the inner surface of the pump. They have both impact damage and secondary destructive capabilities.

[0050] The anti-theft oil tank 1 also includes an air anti-theft module, which is electrically connected to the destruction unit. The air anti-theft module includes an upper frame 5, an air pump 501 is fixedly connected to the interior of the upper frame 5, and the two ends of the air pump 501 are respectively fixedly connected to an air extraction pipe 502 and an exhaust pipe 503. The bottom end of the anti-theft oil tank 1 is fixedly connected to a plurality of bottom pipes 504, and the outer wall of the bottom pipe 504 is fixedly connected to a plurality of branch pipes 505, one end of the branch pipe 505 is fixedly connected to a nozzle 506, and the outer wall of the branch pipe 505 is fixedly connected to a check valve 507.

[0051] Through the above arrangement, when the destroyer unit senses that someone is stealing oil, it can start the air pump 501 to inflate the interior of the bottom pipe 504, and the gas is discharged into the oil through the nozzle 506. At this time, the thief's oil pump will inhale a large amount of gas, which can not only slow down the oil pumping speed, but also affect the thief's oil pump.

[0052] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A nighttime anti-theft alarm device for engineering vehicles based on Internet of Things technology, comprising an anti-theft fuel tank (1), characterized in that: The anti-theft oil tank (1) comprises a sensing unit, a driving unit, a mobile terminal, an Internet of Things communication unit, and a destruction unit, wherein the sensing unit and the driving unit are electrically connected, and the driving unit and the destruction unit are both electrically connected to the mobile terminal via the Internet of Things communication unit; The destruction unit comprises a mounting plate (2), the mounting plate (2) being fixedly connected to the inner wall of the anti-theft oil tank (1), the side wall of the mounting plate (2) being fixedly connected to an active tube (201) and a passive tube (202), the interiors of the active tube (201) and the passive tube (202) being slidably connected to a driving piston (203) and a linkage piston (204), the top end of the driving piston (203) being fixedly connected to a connecting rod (205), the top end of the connecting rod (205) being fixedly connected to a The rack (206) is rotatably connected to the side wall of the mounting plate (2) with a rotating shaft (207), the rotating shaft (207) is located on the upper side of the active tube (201), one end of the rotating shaft (207) is fixedly connected to a gear (208) and a rotating rod (209), one end of the rotating rod (209) is fixedly connected to a float (210), the bottom ends of the active tube (201) and the passive tube (202) are both connected to a head cover (211), and the head cover (211) is fixedly connected to the mounting plate (2). A disk (212) is provided between the two head covers (211), a plurality of through holes (213) are provided in the middle of the disk (212), a bellows (214) is fixedly connected between the head covers (211) and the disk (212), a push-pull rod (215) is fixedly connected to the bottom end of the disk (212), a storage frame (216) is fixedly connected to the side wall of the mounting plate (2), the storage frame (216) is located at the lower side of the disk (212), and the push-pull rod (215) is fixedly connected to the bottom end of the disk (212). 5) is fixedly connected to one end of a sealing cover (217) that matches the storage frame (216), the storage frame (216) and the sealing cover (217) are filled with destructive particles, the interior of the float (210) and the passive tube (202) are filled with transmission fluid, the side walls of the storage frame (216) and the sealing cover (217) are fixedly connected to a tension sensor (218) and an elastic rope (219), respectively, and one end of the elastic rope (219) is fixedly connected to the tension sensor (218).

2. The nighttime anti-theft alarm device for engineering vehicles based on Internet of Things technology according to claim 1 is characterized by: A sliding rod (220) is fixedly connected between the bottom ends of the two head covers (211), and the sliding rod (220) passes through the push-pull rod (215) and is slidably connected thereto.

3. The nighttime anti-theft alarm device for engineering vehicles based on Internet of Things technology according to claim 2 is characterized by: The destruction particle comprises a storage shell (3) and a contamination liquid (4).

4. The nighttime anti-theft alarm device for engineering vehicles based on Internet of Things technology according to claim 3 is characterized by: The storage shell (3) is composed of a protective layer (301) and a leak-proof layer (302), and the contaminated liquid (4) is composed of a colorant (401) and grinding balls (402).

5. The nighttime anti-theft alarm device for engineering vehicles based on Internet of Things technology according to claim 4 is characterized by: The protective layer (301) is configured to be one of polyimide and polycarbonate, and the leak-proof layer (302) is configured to be one of polyurethane and polylactic acid.

6. The nighttime anti-theft alarm device for engineering vehicles based on Internet of Things technology according to claim 4 is characterized by: The colorant (401) is set to be one of oil-soluble alkaline blue, oil-soluble methylene blue, or oil-soluble gentian violet.

7. The nighttime anti-theft alarm device for engineering vehicles based on Internet of Things technology according to claim 4 is characterized by: The grinding balls (402) are configured as one of aluminum oxide particles, corundum, or sodium silicate glass microbeads.

8. The nighttime anti-theft alarm device for engineering vehicles based on Internet of Things technology according to claim 1 is characterized by: The anti-theft oil tank (1) further comprises an air anti-theft module, which is electrically connected to the destruction unit. The air anti-theft module comprises an upper frame (5), an air pump (501) is fixedly connected to the interior of the upper frame (5), and an air extraction pipe (502) and an exhaust pipe (503) are fixedly connected to both ends of the air pump (501).

9. The nighttime anti-theft alarm device for engineering vehicles based on Internet of Things technology according to claim 8, characterized in that: The bottom end of the anti-theft oil tank (1) is fixedly connected to a plurality of bottom pipes (504), the outer wall of the bottom pipe (504) is fixedly connected to a plurality of branch pipes (505), one end of the branch pipe (505) is fixedly connected to a nozzle (506), and the outer wall of the branch pipe (505) is fixedly connected to a check valve (507).

10. The nighttime anti-theft alarm device for engineering vehicles based on Internet of Things technology according to claim 1, characterized in that: The driving unit includes a warning light and a buzzer, and the sensing unit includes an infrared sensing module and a vibration sensing module.

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