CN201882039U

CN201882039U - Automobile intelligent burglar alarming built-in lock

Info

Publication number: CN201882039U
Application number: CN2010206818389U
Authority: CN
Inventors: 李潮龙; 薛旺
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-12-27
Filing date: 2010-12-27
Publication date: 2011-06-29
Anticipated expiration: 2020-12-27

Abstract

The utility model discloses an automobile intelligent burglar alarming built-in lock which comprises a main machine and an auxiliary machine. The main machine comprises a main MCU (Micro Controlled Unit), a main emitter, a main encoder, a main receiver, a main decoder and a main electronic switch, and the auxiliary machine comprises an auxiliary MCU, an auxiliary emitter, an auxiliary encoder, an auxiliary receiver, an auxiliary decoder, an auxiliary electronic switch, a sleep switch and a battery. The main machine is installed inside an automobile and connected a with relevant circuit of the automobile, and is used in combination with the auxiliary machine, can be combined with an existing automobile anti-theft alarm device, can perform whistle and voice prompt till the circuit of an engine oil supply system or ignition system is locked, and has the effects of deterrence, prevention of burglary and alarm, so as to completely improve the automobile anti-theft alarm level. The automobile intelligent burglar alarming built-in lock has the advantages of simple structure, stable performance, economy and practicality and the like.

Description

A kind of automobile intelligent anti-theft alarm built-in lock

Technical field

The utility model belongs to vehicle lock, is specifically related to a kind of automobile intelligent anti-theft alarm built-in lock.

Background technology

The antitheft problem of automobile relates to ten million car owner's vital interests.MCP in present most of car alarm adopts the mode of energising standby in 24 hours, waits car owner's instruction at any time.But along with technological advance, the undesirable uses demoder or frequency spectrum analyzer at a distance, and the password through just cracking car alarm after a while reaches the theft purpose.So many car owner certain corners in automobile have added individual mechanical switch, are commonly called as " built-in lock ".Also be the secondary Car Burglar Alarm, the people who enters in the automobile only just can start automobile after opening " built-in lock " switch.This has improved the theftproof performance of automobile to a certain extent.The shortcoming hidden inadequately but " built-in lock " bothers is apparent.

The utility model content

The purpose of this utility model be to provide a kind of can with existing alarming device for automobile anti-theft coupling, simple in structure, dependable performance, economic, practical automobile intelligent anti-theft alarm built-in lock.

Realize that the technical scheme that the utility model purpose adopts is: automobile intelligent anti-theft alarm built-in lock is made up of main frame and secondary machine two parts; Described main frame comprises main MCU micro controller system, main projector, main encoder, main receptor, main decoder, main electronic switch, main projector is connected with main encoder, main receptor is connected with main decoder, and main MCU micro controller system is connected with main encoder, main decoder and main electronic switch respectively; Described secondary machine comprises secondary MCU micro controller system, secondary projector, secondary coder, companion receiver, secondary demoder, secondary electronic switch, sleep switch and battery, secondary projector is connected with secondary coder, companion receiver is connected with secondary demoder, secondary MCU micro controller system is connected with sleep switch with secondary coder, secondary demoder, secondary electronic switch respectively, is connected with battery between secondary electronic switch and the sleep switch.

Main frame of the present utility model is installed in automotive interior and is connected with the automobile interlock circuit, be used with secondary machine, can with existing alarming device for automobile anti-theft coupling, by blow a whistle, voice suggestion is until the circuit of locking engine oil or ignition system, play threaten, antitheft, the effect of reporting to the police, to reach comprehensive raising automobile anti-theft alarm level.The utlity model has simple in structure, dependable performance, advantage such as economic, practical.

Below in conjunction with drawings and Examples the utility model is described further.

Description of drawings

Fig. 1 is a main machine structure block diagram of the present utility model.

Fig. 2 is a secondary machine structured flowchart of the present utility model.

Fig. 3 is the circuit diagram of main electronic switch in the main frame of the present utility model, main MCU micro controller system.

Fig. 4 is the circuit diagram of secondary electronic switch in the secondary machine of the present utility model.

The specific embodiment

As shown in Figure 1 and Figure 2, automobile intelligent anti-theft alarm built-in lock is made up of main frame and secondary machine two parts; Wherein main frame (referring to Fig. 1) comprises main MCU micro controller system 3, main projector 1, main encoder 2, main receptor 6, main decoder 7, main electronic switch 4, main projector 1 is connected with main encoder 2, main receptor 6 is connected with main decoder 7, and main MCU micro controller system 3 is connected with main encoder 2, main decoder 7 and main electronic switch 4 respectively; Described secondary machine (referring to Fig. 2) comprises secondary MCU micro controller system 13, secondary projector 11, secondary coder 12, companion receiver 16, secondary demoder 17, secondary electronic switch 14, sleep switch 18 and button cell 15, secondary projector 11 is connected with secondary coder 12, companion receiver 16 is connected with secondary demoder 17, secondary MCU micro controller system 13 is connected with secondary coder 12, secondary demoder 17, secondary electronic switch 14 and sleep switch 18 respectively, is connected with button cell 15 between secondary electronic switch 14 and the sleep switch 18.

The circuit of main electronic switch, main MCU micro controller system is seen Fig. 3 in the utility model main frame, and main MCU micro controller system 3 is a decision circuit with main electronic switch 4.Here stress built-in lock stable operation in complex environment, at the automobile stagnation of movement with during travelling, can play important the circuit---electronic switch that prevents to crack the built-in lock password simultaneously.For preventing to crack the built-in lock password, except emission, outside the short and major and minor machine distance of time of reception was near, best bet was exactly to allow built-in lock energising work in 10 seconds when automobile just starts, all the other time outages, and circuit shown in Figure 3 can reach this purpose.When automobile was opened electric switch, power port powered on.The V3 base stage is because R1, and R2 is to its power supply and conducting is powered to MCU.After 10 seconds, sense cycle finishes, if MCU at this moment between in detect secondary machine and exist, from pulse of P1.7 output, this pulse makes silicon control V4 conducting.R2 provides the holding current of V4.The A point voltage drops to 0.6 volt, and transistor V3 ends, and stops to power to MCU.Stop to travel up to automobile, close electric switch, VCC port dead electricity, silicon control ends because of outage.For next start-up period is prepared.If when sense cycle finishes, built-in lock detects less than the machine of paying and exists.Then MCU does not export pulse, not conducting of silicon control V4, and transistor V3 continues the power supply to MCU, guarantees the execution of alert program such as siren, sound circuit.Close electric switch up to automobile, just begin following one-period.

Secondary electronic switch in the secondary machine of the utility model is seen Fig. 4, adopts little power consumption oscillating electron switch.Because small-sized secondary machine space is limited, can only use the power supply of 2032 MnZn button cells.In order to increase the period of service of secondary machine, secondary machine is designed to intermittent power supply.By electronic switch control, provide 0.5 second electric energy to secondary machine every 9 seconds batteries.And main frame start at every turn the back stream time be 10 seconds, so secondary machine is enough to receive the main frame search signal more than 1 in 9 seconds.And the check and correction and beam back corresponding answer signal, principle of work is seen Fig. 2.But electronic switch is continuous working, so its power consumption size just is directly connected to the period of service of secondary machine, circuit shown in Figure 4 can address this problem.The regeneration ring oscillator that secondary electronic switch is made up of pnp and npn pipe.At impulse duration, the equal conducting of two pipes, to C1, C2 charging, C2 approach :+VCC---V2 collector-emitter---V1 base-emitter---ground that charges.C1 the approach :+VCC that charges---V2 penetrates base---C1---V1 penetrates assembly---ground.Because C1, the C2 charging time constant is very little, so pulse width is very little, is about 0.5 second.This pulse width promptly is the electric time of battery to secondary machine confession.Behind the end-of-pulsing, C1, V1 is kept in the C2 discharge, and V2 ends.C2 approach :+VCC---R1---C2---R3---ground that discharges.The discharge approach of C1 :+VCC---R2---C1---R4---ground.Because R1, the R4 resistance is very big, so the complete machine power consumption is minimum, and discharge time constant is very big simultaneously, stops to secondary machine power-on time because this time constant is battery.So battery just provided 0.5 second minimum electric current to complete machine in per 10 seconds.And the power consumption of whole secondary electronic switching circuit own also has only 3 microamperes.

When the utility model uses, the main electronic switch 4 in the main frame is connected with automobile switch 5, the main MCU micro controller system 3 in the main frame is connected with the start button 8 of automotive engine, the annunciator 9 in stop working controller 10, the compartment respectively.Secondary machine is then carried by automobile driver.Main thought of the present utility model is the operation of abbreviation built-in lock, by the overall process of MCU and integrated circuit Control of Automobile intelligent alarm.The interaction mode that adopts FRID technology search sweep password between built-in lock main frame and the secondary machine is that the mode of mutual challenge and reply password is carried out, only automobile ability cruising under the situation of code data unanimity; Increased the difficulty of decryption greatly.

The built-in lock main frame can cut out warning function under the situation of automobile stagnation of movement and cruising, this is to be avoided the interference in the complex environment to be directed at the important measures that make mistakes, report by mistake and suffer illegal deciphering.

The main frame of automobile intelligent anti-theft alarm built-in lock can send near the secondary machine that carries with the car owner radiofrequency signal search of a series of codings in the 15 second time behind automobile starting, this does not influence the normal startup of automobile fully and travels, secondary machine is received after the information and the code data of setting is in advance compared, it is that another group coding that 0.5 second secondary machine carries is replied main frame that code data correctly then sends a width automatically, main frame receive after the information comparison once more correctly then buzzer phone ring three to show legal driving, automobile could continue the maintenance cruising.

If the automobile starting person do not have secondary machine or secondary machine carrier from main frame too far away or password comparison mal, these three kinds of situations all can be judged to be improper start a car by built-in lock, the automobile siren of can ringing was reported to the police 1 minute after 15 seconds, main frame can be with keep to the side the as early as possible safety warning of stopping of voice mode when siren was rung, automobile meeting auto shut down after about 20 seconds, automobile can't start once more in the alarm procedure, and this function is applied in and can allows the car owner leave hijacker's security alarm and prevent that a chain of traffic accident from the safety measure that people-oriented taking place again under the situation that automobile is held as a hostage.

The secondary machine of built-in lock also possesses the function of setting up defences and withdrawing a garrison, and its purpose is the convenient application of repairing etc. under the specific situation of sending as automobile.

Another important feature of built-in lock is the secondary electronic switch that secondary machine has adopted extremely low power dissipation, and this switch has taked intermission power supply method to extend working time.It is small and exquisite and the space is limited, can only use as similar 2032 MnZn button cells power supply, so the size of its power consumption just is directly connected to the period of service of secondary machine.

Several characteristics of the present utility model: 1, in the main frame main MCU single-chip microcomputer at the automobile stagnation of movement and the time outage of normally travelling do not work; Although master MCU single-chip microcomputer energising work during 2 automobile starting, working time short (10 seconds), pulse narrow (0.2 second); 3, major-minor machine communication distance is not long, only driver's cabin or near ability effective. These characteristics make undesirable's decoder or spectrum analyzer be difficult to capture that signal is decoded or frequency analysis.

Claims

1. an automobile intelligent anti-theft alarm built-in lock is characterized in that: be made up of main frame and secondary machine two parts; Described main frame comprises main MCU micro controller system, main projector, main encoder, main receptor, main decoder, main electronic switch, main projector is connected with main encoder, main receptor is connected with main decoder, and main MCU micro controller system is connected with main encoder, main decoder and main electronic switch respectively; Described secondary machine comprises secondary MCU micro controller system, secondary projector, secondary coder, companion receiver, secondary demoder, secondary electronic switch, sleep switch and battery, secondary projector is connected with secondary coder, companion receiver is connected with secondary demoder, secondary MCU micro controller system is connected with sleep switch with secondary coder, secondary demoder, secondary electronic switch respectively, is connected with battery between secondary electronic switch and the sleep switch.