CN104228763A - Anti-theft device for automobile and control method thereof - Google Patents

Abstract

The invention discloses an automobile anti-theft device, which is characterized in that it includes a power supply module, a human body induction module, a controller, a camera, a network transceiver module, a first relay and a controller, and the human body induction module is arranged in the cab of the automobile, so that The human body sensing module transmits the human body sensing signal to the controller, the power supply module supplies power to the controller, the controller sends the control signal to the first relay, and the power supply module supplies the camera and the network transceiver module through the first relay power supply, the controller sends the control signal to the camera, and the camera is connected to the network transceiver module. In the present invention, a controller is used to control whether the first relay supplies power to the camera, thereby saving standby energy consumption.

Description

Automobile anti-theft device and control method for automobile anti-theft device

technical field

The invention relates to an automobile anti-theft device and a control method of the automobile anti-theft device, belonging to the field of anti-theft safety supervision products and methods.

Background technique

With the rapid development of the economy, cars have become an important means of transportation for human beings and their number is increasing. However, the development of modern technology also makes the occurrence of car theft incidents more and more frequent. This brings great instability to the society. At present, the general car alarm mostly uses the car's own horn to send an alarm sound or utilizes the horn as a signal source. Once someone collides with the car, it will send a loud and harsh alarm sound, but there are several obvious defects in it: the one is noise pollution, Especially at night, because of false alarms, the residents around the car are disturbed, which seriously affects the physical and mental health of the residents; the second is that false alarms often occur, especially in thunderstorm weather, and it is not easy to determine which car is the alarm, disturbing Third, the alarm effect is not good, and car thieves can cut off the horn power supply quickly, so that the vehicle cannot report to the police.

Contents of the invention

Purpose of the invention: The purpose of the present invention is to provide an anti-theft alarm device with accurate and timely alarm, good alarm effect, and energy saving in standby mode. Furthermore, it also provides a device that can prevent car thieves from cutting off the power supply of the buzzer, so that the buzzer alarm The anti-theft alarm that can continuously deter car theft, and further, control methods for these two anti-theft alarms are also provided.

Technical solution: A solution of the automobile anti-theft device of the present invention is that it includes a power supply module, a human body sensing module, a controller, a camera, a network transceiver module, and a first relay. The human body sensing module transmits the human body sensing signal to the controller, the power supply module supplies power to the controller, the controller sends the control signal to the first relay, and the power supply module supplies the camera and the network transceiver module through the first relay. power supply, the controller sends the control signal to the camera, and the camera is connected to the network transceiver module.

Further, the network transceiver module is a GSM wireless transceiver module, and the camera is an infrared camera.

Further, it also includes a capacitor and a buzzer, and after the buzzer and capacitor are connected in parallel, they are also powered by the power supply module through the first relay.

Further, it also includes a vehicle locking module, and the vehicle locking module is connected with the controller.

Further, the human body sensing module is arranged at the steering wheel of the car cab.

Further, the voltage, internal resistance, and capacitor capacitance of the power supply module are matched with the volt-ampere characteristics of the buzzer, so that the buzzer starts to buzz within 0.5 to 10 seconds after the first relay is powered, and the capacitor After fully charged, it can keep the buzzer beeping for more than 20 seconds.

Another solution of the present invention further includes a second relay, the second relay is controlled by the controller, and the capacitor is first connected in series with the second relay and then connected in parallel with the buzzer.

Further, it is characterized in that the electrodes of the first capacitor, the second relay and the buzzer are connected by welding, and the first capacitor, the second relay and the buzzer are fixed by welding.

The present invention also includes a control method for a vehicle anti-theft device, the controller runs the following steps:

1) Detect the induction signal of the human body induction module;

2) If the induction signal is not detected, return to step 1), if the induction signal is detected, continue;

3) sending a closed control signal to the first relay;

4) Send a shooting signal to the camera, and read the photo file sent by the camera;

5) Read the pre-stored mobile phone number, send an order to the network transceiver module to send a multimedia message to the number, and send the photo file to the network transceiver module.

The present invention also includes the control method for the car anti-theft device of another kind of scheme, and the controller runs the following steps:

1) Detect the induction signal of the human body induction module;

2) If the induction signal is not detected, return to step 1), if the induction signal is detected, continue;

3) sending a closing control signal to the first relay and the second relay;

4) Send a shooting signal to the camera, and read the photo file sent by the camera;

5) Read the pre-stored mobile phone number, send an order to the network transceiver module to send a multimedia message to the number, and send the photo file to the network transceiver module.

Compared with the prior art, the present invention has the beneficial effects that: in the present invention, a controller is used to control whether the first relay supplies power to the camera, thereby saving standby energy consumption; The alarm rate is set in parallel with the capacitor and the buzzer, so that there is a delay in the alarm, and the voltage at both ends of the buzzer rises gradually, which avoids the noise pollution that may be caused by the buzzer suddenly working at the maximum power. At the same time, even if the power supply of the alarm device Cut off by the car thief, the electric energy stored in the capacitor can still drive the buzzer to alarm, thereby deterring the car thief. Further, by welding the capacitor and the buzzer and welding the electrodes to prevent the car thief from In order to prevent the destruction of the buzzer, another solution of the present invention adopts the second relay to specially design the position of the capacitor, so that when the car thief cuts off the power supply before stealing the car, the capacitor is used as the driving power of the controller and as the buzzer. The driving power of the buzzer makes the entire alarm device maintain the alarm function for a period of time even if the power supply module is damaged as a whole.

Description of drawings

Fig. 1 is the circuit diagram of a kind of embodiment among the present invention;

Fig. 2 is a circuit diagram of another embodiment of the present invention.

Detailed ways

The technical solutions of the present invention will be described in detail below, but the protection scope of the present invention is not limited to the embodiments.

Example 1:

As shown in Figure 1, it is a schematic diagram of the circuit setting of Embodiment 1 of the present invention, wherein the connection between the controller 3 and the relay 6 is not shown, and wherein the power supply module 1 is directly connected to the input end of the human body sensing module 2 and the controller 3, when After the whole anti-theft device is fortified, after the human body sensing module 2 senses the car thief in the cab, the signal is transmitted to the controller, and the controller sends a control signal to close the first relay 6, so that the camera 4, the network transceiver module 5, the buzzer 9 and the power supply terminal of the capacitor 8 are powered on, and the capacitor 8 begins to charge immediately, so that the voltage at both ends of the buzzer 9 is lower than the operating voltage, and the buzzer 9 does not start until the capacitor 8 is charged until the voltage at both ends is greater than the operating voltage. work, and the alarm volume of the buzzer 9 gradually increases as the voltage increases, so there will be no sudden alarm and disturbing phenomenon.

And the controller 3 sends a shooting signal to the camera 4 after closing the first relay 6, and reads the photo file that the camera 4 takes, sends an order to the network transceiver module 5 to send a multimedia message to the prestored phone number, and sends the photo to the network transceiver module 5. The file is transmitted to the network transceiver module 5, and then the network transceiver module 5 executes the serial port command received, and sends a multimedia message to the mobile phone number, thereby realizing the effect of alarming.

The network transceiver module 5 used in this embodiment is a MINI900V6.1 SIM900 module produced by Guilin Chuangda Electronic Technology Co., Ltd., and the controller 3 is a 2MB SPI FLASH with external expansion produced by Guangzhou Xingyi Electronic Technology Co., Ltd. The STM32F103ZET6 open source development board of the module, the camera 4 is the OV7670 camera module produced by Guangzhou Xingyi Electronic Technology Co., Ltd., and the human body sensing module 2 is the TAD-758 human body sensing switch module produced by Shenzhen Tuoanda Electronics Co., Ltd. The first relay 6 is a bistable relay.

The algorithm flow of the controller 3 is:

1) detecting the sensing signal of the human body sensing module 2;

2) If the induction signal is not detected, return to step 1), if the induction signal is detected, continue;

3) Send a closed control signal to the first relay 6, and send a locking signal to the vehicle locking module 10;

4) Send a shooting signal to the camera 4, and read the photo file sent by the camera 4;

5) Read the pre-stored mobile phone number, send an order to the network transceiver module 5 to send a multimedia message to the number, and send the photo file to the network transceiver module 5.

Example 2:

As shown in Figure 2, it is a schematic diagram of the circuit setting of Embodiment 2 of the present invention, wherein the connection of the controller 3 to the first relay 6 and the second relay 11 is not shown, wherein the power supply module 1 is directly connected to the human body induction module 2 and the control The input terminal of device 3, when the entire anti-theft device is set up, the human body induction module 2 senses the car thief in the cab, and transmits the signal to the controller, and the controller sends a control signal to close the first relay 6 and the second relay 11, The camera 4, the network transceiver module 5, and the buzzer 9 power supply terminals are powered on, and the capacitor 8 is charged under the voltage of the power supply module 1 all the time, so even if the power supply module 1 is destroyed, the capacitor 8 can still temporarily provide the working place of the entire anti-theft device. required power.

It is easy to think that setting the first relay 6 and the second relay 11 is superfluous when looking at the circuit diagram 2 only from the perspective of the circuit, and think that the I circuit is actually equivalent to a capacitor 8 that stores energy in parallel on the power supply module 1 as the power supply module 1. The backup power supply after the power supply module 1 is destroyed. However, from the point of view of actual use, after such an equivalent, setting the power supply module 1 and the capacitor 8 together will cause car thieves to discover the capacitor 8 while destroying the outer leads of the power supply module 1, and connect the capacitor 8 with the power supply module 1. And the lead wire that draws out after putting on record is directly cut off and causes the unfavorable situation that can't report to the police. The solution of this embodiment makes the capacitor 8 close to the buzzer 8 by arranging the first relay 6 and the second relay 11, and further adopts welding connection and fixing to firmly fix the buzzer 9, the second relay 11 and the buzzer 8. The capacitor 8 makes the three components form a buzzer alarm module that maintains an alarm function for a period of time when the peripheral circuits are all destroyed, so that the buzzer is difficult to be destroyed by car thieves, thereby deterring car thieves.

After the controller 3 closes the first relay 6 and the second relay 11, it sends a shooting signal to the camera 4, and reads the photo file taken by the camera 4, and sends an order to the network transceiver module 5 to send a multimedia message to the prestored phone number, And the photo file is sent to the network transceiver module 5, and then the network transceiver module 5 executes the received serial port command to send a multimedia message to the mobile phone number, thereby realizing the effect of reporting to the police.

The network transceiver module 5 used in this embodiment is a MINI900V6.1 SIM900 module produced by Guilin Chuangda Electronic Technology Co., Ltd., and the controller 3 is a 2MB SPI FLASH with external expansion produced by Guangzhou Xingyi Electronic Technology Co., Ltd. The STM32F103ZET6 open source development board of the module, the camera 4 is the OV7670 camera module produced by Guangzhou Xingyi Electronic Technology Co., Ltd., and the human body sensing module 2 is the TAD-758 human body sensing switch module produced by Shenzhen Tuoanda Electronics Co., Ltd. Both the first relay 6 and the second relay 11 are bistable relays.

The algorithm flow of the controller 3 is:

1) detecting the sensing signal of the human body sensing module 2;

2) If the induction signal is not detected, return to step 1), if the induction signal is detected, continue;

3) Send a closed control signal to the first relay 6 and the second relay 11, and send a locking signal to the vehicle locking module 10;

4) Send a shooting signal to the camera 4, and read the photo file sent by the camera 4;

5) Read the pre-stored mobile phone number, send an order to the network transceiver module 5 to send a multimedia message to the number, and send the photo file to the network transceiver module 5.

As stated above, while the invention has been shown and described with reference to certain preferred embodiments, this should not be construed as limiting the invention itself. Various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. an alarms and security systems for automobiles, it is characterized in that, comprise supply module (1), human body induction module (2), controller (3), camera (4), network transceiving module (5), first relay (6) and controller (3), described human body induction module (2) is arranged at automobile cab, human-induced signal is sent to controller (3) by described human body induction module (2), described supply module (1) is controller (3) power supply, control signal is sent to the first relay (6) by described controller (3), supply module (1) is camera (4) by the first relay (6), network transceiving module (5) is powered, control signal is sent to camera (4) by described controller (3), described camera (4) is connected to network transceiving module (5).

2. alarms and security systems for automobiles according to claim 1, is characterized in that, described network transceiving module (5) is gsm wireless transceiver module, and described camera (4) is infrared pick-up head.

3. alarms and security systems for automobiles according to claim 2, it is characterized in that, also comprise cond (8) and buzzer phone (9), to be powered by the first relay (6) by supply module (1) equally after described buzzer phone (9) and cond (8) are in parallel.

4. alarms and security systems for automobiles according to claim 3, is characterized in that, also comprises the locked module of automobile (10), and the locked module of described automobile (10) is connected with controller (3).

5. alarms and security systems for automobiles according to claim 4, is characterized in that, described human body induction module (2) is arranged at the bearing circle place of automobile cab.

6. alarms and security systems for automobiles according to claim 5, it is characterized in that, the voltage of described supply module (1), internal resistance, cond (8) electric capacity match with the EI characteristic of buzzer phone (9), make described buzzer phone (9) start buzzing in 0.5 ~ 10 second after the first relay (6) power supply, described cond (8) can maintain buzzer phone (9) buzzing more than 20 seconds after being full of electricity.

7. alarms and security systems for automobiles according to claim 6, it is characterized in that, also comprise the second relay (11), described second relay (11) is controlled by controller (3), and described cond (8) is in parallel with buzzer phone (9) again after first connecting with the second relay (11).

8. alarms and security systems for automobiles according to claim 7, it is characterized in that, be welded to connect between described first cond (8) and each electrode of the second relay (11) and buzzer phone (9), the first cond (8), be welded and fixed between the second relay (11) and buzzer phone (9).

9. the control method of alarms and security systems for automobiles according to claim 6, is characterized in that, described controller (3) runs following steps:

1) induced signal of human body induction module (2);

2) if induced signal do not detected, step 1 is got back to), if induced signal detected, continue;

3) send closed control signal to the first relay (6), send locked signal to the locked module of automobile (10);

4) send shooting signal to camera (4), and read the photo files that camera (4) transmits;

5) read the phone number prestored, send to network transceiving module (5) and send the order of multimedia message to this number, and described photo files is sent to network transceiving module (5).

10. the control method of alarms and security systems for automobiles according to claim 7 or 8, is characterized in that, described controller runs following steps:

1) induced signal of human body induction module (2);

2) if induced signal do not detected, step 1 is got back to), if induced signal detected, continue;

3) send closed control signal to the first relay (6) and the second relay (11), send locked signal to the locked module of automobile (10);

4) send shooting signal to camera (4), and read the photo files that camera (4) transmits;

5) read the phone number prestored, send to network transceiving module (5) and send the order of multimedia message to this number, and described photo files is sent to network transceiving module (5).