CN102184632A - Method for controlling automobile laser remote control gate lock - Google Patents

Abstract

The invention relates to a method for controlling an automobile laser remote control gate lock. The method comprises the steps of generating a remote control signal, receiving the signal, and decoding and determining the signal. A remote control signal device takes the laser as an information carrier wave so as to prevent an intruder from using other laser or different coded laser to interfere. The device combines a laser technology with a digital coding technology to generate cipher control with high secrecy and overcome the shortages that the traditional wireless remote control locking is easily interfered by different frequencies. Through the characteristics of height directional property, strong interference resistance and long emitting distance, and the like of the laser, the device can prevent the interference of the intruder.

Description

A control method for automobile laser remote control door lock

technical field

The invention belongs to the technical field of automobile supplies, and relates to a laser remote unlocking device for an automobile security system, which uses laser as an information carrier and can prevent intruders from interfering with lasers of other wavelengths or laser sources with different codes.

Background technique

At present, most cars use wireless remote control to unlock, adopt fixed code encryption technology, and output corresponding signals through the pairing state of password address bits between special encoding and decoding chips. This traditional encryption technology uses address bits to program different key quantities through different combinations of three-state encoding chips. The multi-bit address data password for transmission and reception is fixed by the manufacturer, and the security performance of the system is improved by the method of multi-group arrangement and combination of variables. Although most car remote control encryption technology adopts fixed code formula now, its secret key amount is limited, making secrecy very poor.

When there is a strong interference environment around or an intruder attempts to use the same frequency to enter the radio wave defense zone and aim at the wireless receiver, the encoding chip normally encodes, but the decoding chip cannot output accurate signals. The alarm system host just cannot generate an automatic alarm, so that the security of the wireless remote control system is insufficient, and the security system loses its due effect. There is huge hidden danger to the property safety of car owner like this, and the use of existing wireless control automobile door lock is extremely unsafe.

Contents of the invention

Today, with the continuous advancement of science and technology, the application range of laser remote control systems is also expanding, and has been applied to military communication systems. Aiming at the lack of safety of the existing wireless remote control car door locks, a laser remote control unlocking device is designed. This device using laser as an information carrier can overcome the shortcomings of the existing wireless remote control unlocking that is susceptible to interference, and at the same time utilizes single-chip digital coding technology , On the basis of improving the safety of the device itself, the car door lock is controlled by a high-precision laser remote control method, which greatly improves the anti-theft ability of the car.

The present invention is achieved through the following technical solutions:

The laser remote unlocking device is composed of a laser emitting device and a laser receiving device. The laser emitting device modulates the laser beam by constructing a single-chip encoder with digital coding, and outputs the signal to drive the laser to work, so as to realize the short-to-medium-distance transmission of digitally coded information using laser as the information carrier.

The laser receiving device includes a modulated laser receiver, which converts and amplifies the received laser signal into a photoelectric signal through an amplifier, and connects it with a single-chip decoder to compare the received data with the sent data. If the received data is positioned If the positioning is consistent, the correct command will be sent; if the positioning is inconsistent, the wrong command will be sent, so as to achieve the purpose of remote unlocking.

The present invention has the following advantages:

1. The use of laser light as the information carrier makes the invention have the characteristics of good directivity, strong anti-interference ability, and long transmission distance.

2. Digital coding is used to modulate the laser beam, and the discontinuity of the laser is used to increase the anti-interference ability of the device, improve the service life and reliability, reduce the cost of use, and use it safely and reliably.

3. The device has the characteristics of simple structure, small size, and easy to carry.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the laser remote control door lock of the present invention, which is also used as a summary drawing.

In Fig. 1: 1-laser emitting device, 2-single-chip computer encoder, 3-generated signal, 4-laser receiving device, 5-single-chip computer decoder.

Detailed ways:

The control method of the automobile laser remote control door lock of the present invention includes signal generation, signal reception and signal decoding confirmation.

The signal is generated by the laser emitting device (1), and the single-chip coder (2) that modulates the laser beam through the digital coding in the device. When the single-chip microcomputer is working, the driving circuit is connected with the output terminal of the laser, and the encoder emits the output signal (3) through the laser. Thus, signal generation is achieved.

The reception of the signal is through the modulated laser receiver (4), which converts the received laser signal into a photoelectric conversion signal that can be recognized by the single-chip microcomputer, connects the signal to the single-chip decoder (5), and compares the received and sent data. number of positions. If the positioning numbers are consistent, a correct command will be generated, and the car door lock can be opened or closed normally; if the positioning numbers are inconsistent, an incorrect command will be sent.

The present invention uses digital coding technology to improve the device itself to produce high-security password control; uses high-precision laser as the information carrier to overcome the disadvantage that wireless remote control is easily interfered by different frequencies, thereby preventing intruders from Interference greatly protects the owner's property safety.

Claims (4)

1. the control method of a vehicle laser remote control gate lock is characterized in that comprising the dispensing device of laser signal and the generation device of laser signal.

2. the described sender unit of claim 1 is characterized in that: the generation of signal is to be produced by laser beam emitting device, comes the single-chip microcomputer scrambler of modulating lasering beam by the numerical coding in the device.When single-chip microcomputer was worked, driving circuit was connected with the output terminal of laser instrument, and scrambler is launched output signal by laser instrument.

3. the described signal receiving device of claim 1, it is characterized in that: the reception of signal is by modulated laser pick-off, and the laser signal that receives is converted to and can by amplifier it be amplified with the photosignal of single-chip microcomputer identification.Signal is connected with the single-chip microcomputer demoder, relatively receives and send the location number of data.If the location number unanimity will produce right instructions, automobile door lock can normally be opened or close; If location number is inconsistent, will send false command.

4. according to right 2 described laser beam emitting devices, it is characterized in that: utilize laser as information carrier, have short transverse, antijamming capability is strong, transmitting range is long.

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