CN202608725U - Automobile anti-theft system based on multiple sensors - Google Patents

Abstract

The utility model discloses an automobile anti-theft system based on multiple sensors, which comprises a micro-controller module, a human-computer interaction module connected with the micro-controller module, a power supply module for supplying power to each power consumption module in the system, and the micro-controller module The input terminal is connected with a microwave motion sensor used to detect whether the car is moving, a Hall sensor used to detect the state of the car tires, an acceleration sensor used to detect the state of the car engine and an infrared sensor used to detect whether someone has entered the car. The output terminal of the microcontroller module is connected with an audible and visual alarm circuit module for sending out an audible and visual alarm signal when the car is stolen, a wireless communication module for sending an alarm message to the owner's mobile phone, and a circuit module for turning on or off the car ignition circuit. switch circuit module. The utility model has the advantages of simple structure, reasonable design, high alarm accuracy rate, low environmental noise, unrestricted alarm distance, timely prevention of car theft, strong practicability, and convenient popularization and application.

Description

Automobile anti-theft system based on multi-sensor

technical field

The utility model relates to the technical field of automobile anti-theft, in particular to an automobile anti-theft system based on multiple sensors.

Background technique

With the continuous improvement of people's living standards, cars have become an indispensable part of people's lives. Since the world's first Model T Ford was stolen, car theft has become one of the most common crimes in cities today. The number of cars has increased, and the number of stolen vehicles has also increased year by year, which has brought great instability to the society. Worrying about theft of vehicles has become a problem that plagues every car owner. Moreover, due to the temptation of huge amounts of money and the development of science and technology, criminals are using more and more theft methods. At present, car anti-theft devices are also many, but most of them are simple in structure and not powerful enough in function. At present, the mainstream car anti-theft devices on the market can be divided into four categories: mechanical anti-theft devices, electronic anti-theft devices, chip anti-theft devices and network anti-theft devices according to their structures and functions. Yet these car anti-theft technologies all have certain shortcoming, mainly show in two aspects: the one, the false alarm rate of the alarm remains high, and most of the alarms are all voice alarms, so that the alarm sound becomes environmental noise; The 2nd, alarm distance is limited, lacks effective control to stolen vehicle after reporting to the police.

Utility model content

The technical problem to be solved by the utility model is to provide a car anti-theft system based on multiple sensors, which has a simple structure, reasonable design, high alarm accuracy rate, low environmental noise, and unlimited alarm distance. , can prevent the car from being stolen in time, has various alarm modes, strong practicability, and is convenient for popularization and application.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a car anti-theft system based on multi-sensors, which is characterized in that it includes a microcontroller module, a human-computer interaction module connected with the microcontroller module and a system The power supply module powered by each power module in the micro-controller module is connected with a microwave motion sensor for detecting whether the automobile has moved, a hall sensor for detecting the state of the automobile tire, and a hall sensor for detecting the state of the automobile engine. The acceleration sensor and the infrared sensor used to detect whether someone enters the car, the output terminal of the microcontroller module is connected with a sound and light alarm circuit module for sending a sound and light alarm signal when the car is stolen, and is used to report to the owner's mobile phone A wireless communication module for sending alarm messages and a switch circuit module for turning on or off the ignition circuit of the car.

The above-mentioned car anti-theft system based on multiple sensors is characterized in that: the microcontroller module is a single-chip microcomputer S3C44B0X.

The above multi-sensor based car anti-theft system is characterized in that: the microwave motion sensor is an Agilis microwave motion sensor HB100.

The above multi-sensor based car anti-theft system is characterized in that: the Hall sensor is a chip A3210E.

The above multi-sensor based car anti-theft system is characterized in that: the acceleration sensor is a chip ADXL202E.

The above multi-sensor based car anti-theft system is characterized in that: the infrared sensor is a passive dual-sensitive element pyroelectric infrared sensor RE200B.

The above-mentioned multi-sensor based car anti-theft system is characterized in that: the wireless communication module is a Siemens TC35 wireless communication module.

The above multi-sensor based car anti-theft system is characterized in that: the human-computer interaction module is a touch-type liquid crystal display.

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

1. The utility model has the advantages of simple structure, reasonable design and convenient realization.

2. The utility model collects four aspects of data through infrared sensors, Hall sensors, microwave motion sensors and acceleration sensors. Due to the differences and complementarities of various sensors, the data can be effectively fused and analyzed, with high alarm accuracy and low environmental noise. , greatly reducing the car theft rate.

2. The utility model alarms through the wireless communication module and the mobile phone of the car owner. As long as there is a mobile phone signal, the alarm information can be received, and the alarm distance is not limited.

3. The utility model cuts off the ignition circuit of the automobile through the switch circuit module, so that illegal personnel cannot start the automobile, thereby effectively controlling the vehicle and preventing the automobile from being stolen in time.

4. The utility model can work in real time after opening, which ensures the safety of the car when the owner is not in the car.

5. The utility model has various alarm modes, which are simple and efficient, and have a high degree of intelligence.

6. The utility model has strong practicability and is convenient for popularization and application.

To sum up, the utility model has the advantages of simple structure, reasonable design, high alarm accuracy rate, low environmental noise, unrestricted alarm distance, timely avoiding car theft, various alarm modes, strong practicability, and easy popularization and application.

The technical solutions of the present utility model will be further described in detail through the drawings and embodiments below.

Description of drawings

Fig. 1 is the block diagram of circuit principle of the utility model.

Explanation of reference signs:

1—microcontroller module; 2—human-computer interaction module; 3—power supply module;

4—Microwave motion sensor; 5—Hall sensor; 6—Acceleration sensor;

7—infrared sensor; 8—sound and light alarm circuit module; 9—wireless communication module;

10—switch circuit module; 11—car owner’s mobile phone; 12—car ignition circuit.

Detailed ways

As shown in Figure 1, the utility model includes a microcontroller module 1, a human-computer interaction module 2 connected with the microcontroller module 1 and a power supply module 3 for supplying power to each power module in the system, the microcontroller module The input terminal of 1 is connected with a microwave motion sensor 4 used to detect whether the car has moved, a Hall sensor 5 used to detect the state of the car tires, an acceleration sensor 6 used to detect the state of the car engine, and a sensor used to detect whether someone has entered the car. The infrared sensor 7, the output terminal of the microcontroller module 1 is connected with the sound and light alarm circuit module 8 for sending the sound and light alarm signal when the car is stolen, and the wireless communication module 9 for sending the alarm note to the car owner's mobile phone 11 And a switch circuit module 10 for turning on or off the ignition circuit 12 of the vehicle.

As shown in FIG. 1 , in this embodiment, the microcontroller module 1 is a single-chip microcomputer S3C44B0X. The microwave motion sensor 4 is an Agilis microwave motion sensor HB100. The Hall sensor 5 is a chip A3210E. The acceleration sensor 6 is a chip ADXL202E. The infrared sensor 7 is a passive dual-sensitive element pyroelectric infrared sensor RE200B. The wireless communication module 9 is a Siemens TC35 wireless communication module. The human-computer interaction module 2 is a touch-type liquid crystal display screen.

The working principle and working process of the utility model are: when the car owner leaves the car, the car anti-theft system described in the utility model is opened by operating the human-computer interaction module 2, and the infrared sensor 7, the Hall sensor 5, the microwave movement sensor 4 and the acceleration sensor 6 enters the real-time working state, and the microcontroller module 1 regularly detects and analyzes the signals output by the infrared sensor 7, Hall sensor 5, microwave motion sensor 4 and acceleration sensor 6 in real time. Someone enters the interior of the car, the car moves, the tires of the car start to rotate, and the engine of the car starts to rotate. Therefore, the signals output by the infrared sensor 7, the Hall sensor 5, the microwave motion sensor 4 and the acceleration sensor 6 will change simultaneously. Now, microcontroller module 1 judges that illegal personnel are trying to steal the car, and microcontroller module 1 controls sound and light alarm circuit module 8 to send sound and light alarm signal. 11 sends an alarm message, and controls the switch circuit module 10 to disconnect the automobile ignition circuit 12 to ensure the safety of the vehicle, and informs the owner to rush back to the parking spot of the automobile in time. When the car owner enters the vehicle to drive, the car owner closes the car anti-theft system described in the utility model by operating the human-computer interaction module 2, so as to ensure that the utility model will not send a false alarm. In addition, only when the signals output by the infrared sensor 7, the Hall sensor 5, the microwave movement sensor 4 and the acceleration sensor 6 all change, the utility model will send out an alarm signal, which effectively reduces the false alarm rate. Reliability is improved, unnecessary panic is avoided, and noise pollution is reduced. By setting the wireless communication module 9 and the car owner's mobile phone 11 to alarm, as long as there is a mobile phone signal, the alarm information can be received, and the alarm distance is very far, which solves the defect and deficiency of the limited alarm distance of the alarm in the prior art. Through the setting of the switch circuit module 10, the car can be prevented from being stolen in time, which solves the defect and deficiency that the alarm device in the prior art lacks effective control of the stolen vehicle after alarming.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any simple modifications, changes and equivalent structural changes made to the above embodiments according to the technical essence of the present utility model still belong to Within the scope of protection of the technical solution of the utility model.

Claims (8)

1. A car anti-theft system based on multiple sensors, characterized in that it includes a microcontroller module (1), a human-computer interaction module (2) connected to the microcontroller module (1) and a power supply for each power consumption in the system The power supply module (3) for power supply of the module, the input terminal of the microcontroller module (1) is connected with a microwave motion sensor (4) for detecting whether the car has moved, a Hall sensor (5) for detecting the state of the car tire ), the acceleration sensor (6) used to detect the state of the car engine and the infrared sensor (7) used to detect whether someone has entered the car, the output terminal of the microcontroller module (1) is connected with a An audible and visual alarm circuit module (8) for sending out an audible and visual alarm signal, a wireless communication module (9) for sending an alarm message to the owner's mobile phone (11), and a switch circuit for turning on or off the car ignition circuit (12) module (10). 2. The car anti-theft system based on multiple sensors according to claim 1, characterized in that: the microcontroller module (1) is a single-chip microcomputer S3C44B0X. 3. The car anti-theft system based on multiple sensors according to claim 1, characterized in that: the microwave movement sensor (4) is an Agilis microwave movement sensor HB100. 4. The car anti-theft system based on multiple sensors according to claim 1, characterized in that: the Hall sensor (5) is a chip A3210E. 5. The car anti-theft system based on multiple sensors according to claim 1, characterized in that: the acceleration sensor (6) is a chip ADXL202E. 6. The car anti-theft system based on multiple sensors according to claim 1, characterized in that: the infrared sensor (7) is a passive dual-sensitivity pyroelectric infrared sensor RE200B. 7. The car anti-theft system based on multiple sensors according to claim 1, characterized in that: the wireless communication module (9) is a Siemens TC35 wireless communication module. 8. The car anti-theft system based on multi-sensors according to claim 1, characterized in that: the human-computer interaction module (2) is a touch-type liquid crystal display.

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