CN203450088U - Automobile antitheft warning device - Google Patents

Abstract

The utility model discloses an automobile anti-theft alarm device, which comprises a remote controller and an anti-theft device body installed on the automobile. The remote controller is equipped with an infrared signal sending device, and the anti-theft device body includes a single-chip microcomputer, an infrared signal receiving module, a fingerprint Identification module, induction module, automobile circuit control module, automobile oil circuit control module, wheel lock control mechanism, alarm. The automobile anti-theft alarm device of the utility model uses a remote controller or a fingerprint to control whether the automobile anti-theft alarm device works. In the working state of the car anti-theft alarm device, when the sensing module senses that someone is prying the door, the engine compartment cover and the trunk cover, it will send a signal to the single-chip microcomputer, and the single-chip microcomputer controls the start of the alarm, and the alarm sounds and starts at the same time. The car circuit control module and the car oil circuit control module make it impossible for car thieves to drive the car away, and at the same time control the activation of the wheel locking control mechanism to lock the rear wheels so that the car cannot be towed away.

Description

Car anti-theft alarm device

technical field

The utility model relates to an anti-theft device, in particular to an automobile anti-theft alarm device.

Background technique

With the widespread popularization of cars, there are more and more car anti-theft incidents. Car anti-theft device is a device installed on the car to increase the difficulty of car theft and prolong the time of car theft. It is the protector of the car. By matching the anti-theft device with the car circuit, it can prevent the vehicle from being stolen, violated, protect the car and realize various functions of the anti-theft device. With the advancement of science and technology, in order to deal with the escalating means of car theft, people have developed various types of anti-theft devices with different structures. The current anti-theft devices can be divided into four categories according to their structures: mechanical type, chip type, and electronic type. and networked.

Existing car anti-theft devices usually use the impact and vibration monitoring of the car body to carry out anti-theft early warning. The commonly used devices are mostly magnetic effect sensors. Error, its frequency response is unstable, will cause the follow-up signal processing circuit and microcontroller interface circuit to be more complex, resulting in a lower reliability of the system alarm and a higher false alarm rate. Some cars use pressure sensors for anti-theft alarms. When using this alarm, if someone accidentally touches it or presses it in other ways, the alarm will sound, which will easily cause a lot of noise and affect people's living environment. And most anti-theft devices are to control the starting circuit of the engine so that the engine cannot work. But also can take the mode of trailer to steal under the situation that engine can't start. the

Utility model content

The technical problem to be solved by the utility model is to provide a high-safety car anti-theft alarm device for the above-mentioned deficiencies in the prior art.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: an automobile anti-theft alarm device, including a remote controller and an anti-theft device body installed on the automobile, the remote controller is equipped with an infrared signal sending device, and the anti-theft device The main body includes a single-chip microcomputer, an infrared signal receiving module, a fingerprint identification module, a sensing module, an automobile circuit control module, an automobile oil circuit control module, a wheel lock control mechanism, and an alarm. The infrared signal receiving module receives the signal sent by the infrared signal sending device And be connected with the first input terminal of single-chip microcomputer, described fingerprint recognition module, sensing module are connected with other input terminals of single-chip microcomputer respectively, the output terminal of single-chip microcomputer is respectively connected with automobile circuit control module, automobile oil circuit control module, wheel lock control mechanism and The alarm is connected.

As a preferred technical solution of the present invention, the sensing module includes trigger buttons arranged on the vehicle door, the engine compartment cover and the trunk cover.

As a preferred technical solution of the present invention, the wheel locking control mechanism includes a motor, a worm gear, an oil cylinder and a three-way joint, the motor is connected to the worm gear shaft, and the piston in the oil cylinder is fixedly connected to the worm gear. The bottom of the oil cylinder is fixedly connected with a joint of the tee, and a return spring is installed between the piston and the bottom of the oil cylinder.

The automobile anti-theft alarm device of the present utility model mainly utilizes the remote controller to control whether the automobile anti-theft alarm device works at ordinary times, and can also use fingerprints to control the opening and closing of the automobile anti-theft alarm device when there is no remote controller or the remote controller is lost. In the working state of the car anti-theft alarm device, when the sensing module senses that someone is prying the door, the engine compartment cover and the trunk cover, it will send a signal to the single-chip microcomputer, and the single-chip microcomputer controls the start of the alarm, and the alarm sounds. The car circuit control module disconnects the car circuit, and controls the car oil circuit control module to disconnect the car oil circuit, so that the car thief cannot drive away. At the same time, the single-chip microcomputer also controls the wheel lock control mechanism to start and lock the rear wheels. Make the car can not be towed away, to ensure the safety of the car.

Description of drawings

Fig. 1 is a schematic diagram of the system structure of the anti-theft device body of the present invention.

Fig. 2 is a structural schematic diagram of the wheel locking control mechanism of the present invention.

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model will be further described.

Detailed ways

Example 1

Referring to Fig. 1, this automobile anti-theft alarm device comprises a remote controller and an anti-theft device body installed on the automobile, an infrared signal sending device is housed on the remote controller, and the anti-theft device body includes a single-chip microcomputer, an infrared signal receiving module, and a fingerprint identification module , an induction module, an automobile circuit control module, an automobile oil circuit control module, a wheel lock control mechanism, and an alarm, the infrared signal receiving module receives the signal sent by the infrared signal sending device and is connected with the first input terminal of the single-chip microcomputer, and the The fingerprint identification module and the sensing module are respectively connected with other input ends of the single-chip microcomputer, and the output ends of the single-chip microcomputer are respectively connected with the automobile circuit control module, the automobile oil circuit control module, the wheel lock control mechanism and the alarm. The sensing module includes trigger buttons located on the doors, bonnet and trunk lid. Referring to Fig. 2, the wheel lock control mechanism includes a motor 1, a worm gear 2, an oil cylinder 3 and a tee joint 6, the motor 1 is connected to the worm gear 2 shaft, and the piston 4 in the oil cylinder 3 is fixedly connected to the worm gear 2. The bottom 7 of the oil cylinder is fixedly installed with the 6 of the three-way joint, and a return spring 5 is installed between the piston 4 and the bottom 6 of the oil cylinder. The second joint 8 of the three-way joint is connected with the four-wheel brake cylinder. The third joint 9 of the through joint is connected together with the brake master cylinder of the automobile. The microcontroller adopts AT89S52.

The fingerprints of the car owner and other people are pre-registered in the single-chip microcomputer. The default mode is the mode that both the remote control and the fingerprint can be turned on. It can also be set to only the fingerprint, only the remote control, or both the remote control and the fingerprint. After locking the car, press the remote control, the infrared signal receiving module receives the signal emitted by the infrared signal sending device on the remote control, and then sends a signal to the single-chip microcomputer, the single-chip microcomputer controls the sensing module to be in an active state, when the sensing module senses someone prying the door , engine compartment cover and trunk lid, that is, send a signal to the single-chip microcomputer, the single-chip microcomputer controls and controls the alarm to start, and the alarm sounds an alarm. At the same time, the vehicle circuit control module is controlled to disconnect the vehicle circuit, and the vehicle oil circuit control module is controlled. At the same time, the single-chip microcomputer also controls the wheel lock control mechanism to start, and the motor 1 rotates and converts the rotational motion of the motor into the linear motion of the piston through the transmission device composed of a worm gear. The oil that pushes the oil cylinder enters the wheel cylinder of the car, locks the wheels of the car, and prevents the car from being towed away. the

Claims (3)

1. a car anti-theft alarm device, comprising remote controller and the anti-theft device body installed on the car, said remote controller is equipped with infrared signal transmitter, said anti-theft device body includes single-chip microcomputer, infrared signal receiving module, fingerprint recognition module, Induction module, automobile circuit control module, automobile oil circuit control module, wheel lock control mechanism, alarm, the infrared signal receiving module receives the signal sent by the infrared signal sending device and is connected with the first input terminal of the single-chip microcomputer, and the fingerprint The identification module and the sensing module are respectively connected with other input terminals of the single chip microcomputer, and the output terminals of the single chip microcomputer are respectively connected with the automobile circuit control module, the automobile oil circuit control module, the wheel lock control mechanism and the alarm. 2. The car anti-theft alarm device according to claim 1, characterized in that: said sensing module includes trigger buttons arranged on the car door, the engine compartment cover and the trunk cover. 3. The automobile anti-theft alarm device according to claim 1 or 2, characterized in that: the wheel lock control mechanism includes a motor, a worm gear, an oil cylinder and a tee, the motor is connected to the worm gear shaft, and the oil cylinder The internal piston is fixedly connected with the worm gear, the bottom of the oil cylinder is fixedly connected with a joint of the tee, and a return spring is installed between the piston and the bottom of the oil cylinder.

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