CN206579598U - A kind of vehicle part burglar alarm - Google Patents

Abstract

The utility model discloses an anti-theft alarm for vehicle parts, which comprises an independent power supply, a control switch, a control unit, a radar induction switch, a power amplifier and an alarm connected in series through wires in sequence. The acceleration sensor, the single chip microcomputer and the switch trigger circuit, the input terminal of the single chip microcomputer is connected with the acceleration sensor, the output terminal of the single chip microcomputer is connected with the switch trigger circuit, and the switch trigger circuit is connected in series between the control switch and the radar sensor switch. The utility model is applied to large-scale vehicles, and is used to monitor exposed batteries, fuel tanks and other components. When a theft accident occurs, it can send an alarm in time; The anti-theft function is only activated when the vehicle is moving, that is, when there is no one on the vehicle, which effectively avoids false triggering during driving and can effectively reduce energy consumption.

Description

Anti-theft alarm for vehicle parts

technical field

The utility model relates to the technical field of automobiles, in particular to an anti-theft alarm for vehicle parts.

Background technique

At present, the main components such as batteries and fuel tanks of large trucks are mostly installed on the frame under the body of the truck, and most of them are exposed to the air. The batteries, fuel tanks and the frame are simply fixed. A lock is installed, which is also a lock with a relatively simple structure. For this reason, during the parking process of the vehicle, truck batteries are often stolen and oil is stolen, making the vehicle unusable, and it is necessary to buy a new battery or go to a gas station. Refueling is not only a waste of money, but also a waste of time, which is very troublesome.

Chinese patent CN201520755799 discloses a radar-inductive battery anti-theft alarm device for solar street lights. Its principle is to include a battery, a radar sensing module and an alarm module. The radar sensing module senses whether someone is approaching, and then sends out an alarm. If this principle is directly applied to the vehicle to monitor the exposed battery and mailbox of the vehicle, there must be the following problems: since the vehicle does not need to be monitored during driving, it is only used to monitor the stopped vehicle, so when the vehicle is running Among them, in order to prevent normal pedestrians from approaching, the alarm can only be prevented by manually turning off the power supply. Once forgotten, the alarm will be issued frequently, which is inconvenient; and it also increases unnecessary energy consumption.

Contents of the invention

The technical problem to be solved by the utility model is to provide an anti-theft alarm for vehicle parts, which can automatically activate the anti-theft function according to the driving state of the vehicle, avoid false triggering during driving, and reduce power consumption.

In order to solve the problems of the technologies described above, the technical solutions adopted by the utility model are as follows.

An anti-theft alarm for vehicle parts, including an independent power supply, a control switch, a control unit, a radar sensor switch, a power amplifier and an alarm connected in series through wires, the control unit includes an acceleration sensor for detecting the running state of the vehicle, a single-chip microcomputer and a switch trigger circuit, the input end of the single chip microcomputer is connected to the acceleration sensor, the output end of the single chip microcomputer is connected to the switch trigger circuit, and the switch trigger circuit is connected in series between the control switch and the radar sensor switch.

In the above-mentioned anti-theft alarm for vehicle parts, the main device of the switch trigger circuit is a triode, and the base of the triode is connected to the output terminal of the single-chip microcomputer.

Due to the adoption of the above technical solutions, the technical progress achieved by the utility model is as follows.

The utility model is applied to large-scale vehicles to monitor exposed parts such as batteries and fuel tanks. When a theft accident occurs, an alarm can be issued in time; in addition, the utility model can also automatically identify the driving state of the vehicle, and only The anti-theft function is only activated when the vehicle is stationary for a long time, that is, when there is no one on the vehicle, which effectively avoids the occurrence of false triggering during driving and can effectively reduce energy consumption.

Description of drawings

Fig. 1 is the electrical structural diagram of the present utility model;

Fig. 2 is an electrical schematic diagram of the control unit of the present invention.

Among them: 1. Independent power supply, 2. Control switch, 3. Control unit, 31. Acceleration sensor, 32. Single-chip microcomputer, 33. Switch trigger circuit, 4. Radar sensor switch, 5. Power amplifier, 6. Alarm.

detailed description

The utility model will be further described in detail below in conjunction with specific embodiments.

An anti-theft alarm for vehicle parts, its structure is shown in Figure 1, including an independent power supply 1, a control switch 2, a control unit 3, a radar sensor switch 4, a power amplifier 5 and an alarm 6, and the above-mentioned components are connected in series through wires in sequence , constitute the anti-theft alarm circuit.

The radar sensor switch is installed near the fuel tank and the body of the vehicle. The sensor angle of the radar sensor switch is 180*360 degrees, the front hemisphere, the sensor distance is 6-8 meters (adjustable), and the delay time is 18-25 seconds (adjustable). . The radar sensor switch uses the Doppler effect principle, adopts the most advanced planar antenna, intelligently detects the surrounding electromagnetic environment, and can automatically adjust the working state. After the sensor switch is turned on, it can use its adjustable delay function to continue alarming. During the delay period, if there is human activity, the switch will continue to be connected until the person leaves and the time is extended.

The control unit 3 includes an acceleration sensor 31, a single-chip microcomputer 32 and a switch trigger circuit 33, the input end of the single-chip microcomputer is connected to the acceleration sensor, the output end of the single-chip microcomputer is connected to the switch trigger circuit, and the switch trigger circuit is connected in series between the control switch 2 and the radar sensor switch 4. The acceleration sensor 31 is installed on the wheel hub of the automobile wheel or on the drive shaft to detect the running state of the vehicle and transmit the information to the single-chip microcomputer. The single-chip microcomputer analyzes and judges the signal. If it is determined that the vehicle is in a stopped state, the circuit is triggered by a switch Turn on the anti-theft alarm circuit; if it is determined that the vehicle is in a driving state, then disconnect the anti-theft alarm circuit to prevent false triggering.

In this embodiment, the main component of the switch trigger circuit is a triode, and the base of the triode is connected to the output terminal of the single-chip microcomputer. As shown in Figure 2, the collector of the triode is connected to one end of the control switch, and the emitter of the triode is connected to one end of the radar sensor switch. .

The control switch of the utility model is used for manually controlling the on and off of the anti-theft alarm circuit, and the radar induction switch is used for connecting the anti-theft alarm circuit when a person approaches the vehicle and steals, and the alarm sends out an alarm.

The alarm in the utility model can be a horn, and the horn is usually installed on the front of the car; the alarm can also be a remote alarm system, such as including a wireless transmission module and an intelligent terminal for data transmission through a wireless network, wherein the wireless transmission module is arranged on On the vehicle, it is used to send alarm information, and the smart terminal is a handheld terminal for the owner of the vehicle, so as to receive alarm information immediately.

The working principle of the utility model is as follows: 1) When the vehicle is stopped, the output signal of the acceleration sensor is zero, and the single-chip microcomputer controls the triode to be turned on. At this time, the control switch is also in the closed state, that is, the utility model is in the monitoring state; When stealing, the radar sensor switch is closed, the anti-theft alarm circuit is connected, and the alarm sends out an alarm; if no one approaches the vehicle, the radar sensor switch is turned on, and no alarm is given. 2) When the vehicle is running, the acceleration sensor outputs a high-level signal, and the single-chip microcomputer controls the triode to turn off. Even if the radar sensor switch senses someone approaching, the anti-theft alarm circuit cannot be connected, and no alarm will be issued, which can effectively avoid accidents when the vehicle is driven by someone. The occurrence of triggering phenomenon.

Claims (2)

1. a kind of vehicle part burglar alarm, it is characterised in that：Including the independent current source being sequentially connected in series by wire （1）, controlling switch（2）, control unit（3）, radar inductive switch（4）, power amplifier（5）And alarm（6）；The control Unit processed（3）Including the acceleration transducer for detecting travel condition of vehicle（31）, single-chip microcomputer（32）And switch triggering electricity Road（33）, the input connection acceleration transducer of single-chip microcomputer, the output end connecting valve triggers circuit of single-chip microcomputer, switch triggering Circuit is serially connected in controlling switch（2）With radar inductive switch（4）Between.

2. a kind of vehicle part burglar alarm according to claim 1, it is characterised in that：The switch triggering circuit Main devices are triode, and the base stage of triode connects the output end of single-chip microcomputer.