CN2210127Y - Multi-function electronic lock for automobile - Google Patents

Abstract

The utility model provides a multi-function electronic lock for automobiles, which belongs to the theft-proof device for automobiles. The utility model is mainly composed of an electronic key, a discrimination circuit, a block circuit, a control circuit, a delaying auto-stop circuit, a destruction-proof switch, a current supply, an alarming horn, etc. The electronic key is a miniature plug with a resistor; the block circuit can avoid of test unlocking; an ignition system and a main fuel path can be controlled to cut off or to start. When a driver suffers from hijacking, the automobile can extinguish in a few minutes; when someone destroys the circuits, and the utility model instantly sends out alarm. The multi-function electronic lock can be expanded into a wireless alarm mode. The utility model has simple structure, convenient installation and use, multiple functions and low cost.

Description

Multi-function electronic lock for automobile

The utility model relates to the anti-theft multifunctional electronic lock of a kind of automobile, belongs to anti-theft device for vehicle.

Be used for the existing a lot of reports of electronic lock of automobile burglar now, use seldom but really can popularize in an all-round way.The subject matter of prior art existence at present is that electronic lock or other anti-joyride device are installed trouble, and the driver uses inconvenience, and function singleness and cost are high.

The purpose of this programme is to propose simple, easy to use, the multi-functional good confidentiality of a kind of installation, Automobile Electronie Lock cheaply, in the hope of solving the generation of the stolen or case such as be robbed of automobile.

This programme is achieved in that it mainly is made up of electron key 1, discriminator circuit 3, control circuit 5, time-delay automatic stopping circuit 6.Wherein discriminator circuit 3 is bound voltage comparators, and electron key 1 is a sample resistance R of discriminator circuit 3 input voltages ₀It and resistor R ₁, potential device W ₁Form input voltage U after the dividing potential drop _ABe added to the input end of discriminator circuit 3; Integrated transporting discharging A ₂, A ₁With resistance R ₂, R ₃, potential device W ₂The upper and lower limit voltage comparator of forming discriminator circuit 3, A ₂Comparative voltage U ₂Greater than A ₁Comparative voltage U ₁, have only as input voltage U _AAt ［ U ₂, U ₁When scope is interior, discriminator circuit 3 output U _BJust be low level, otherwise U _BBe high level.Control circuit 5 is by amplifier A ₄, aerotron BG ₂With master relay J ₁Form the output of discriminator circuit 3 and A ₄Positive input link to each other, work as U _BA during for low level ₃Be output as low level, aerotron BG ₂Forward bias value and conducting, master relay J ₁Must be electric, its contact is connected starter motor M respectively, high-tension coil loop and fire-retardant oil circuit, and disconnect alarming horn 12, but make automobile be in normal starting state.When not inserting electron key 1 or inserting off-square resistance 10, master relay J ₁Do not work, automobile can't starting ignition.Open automobile key switch 13 if any the people, because J _1-1Closure, alarming horn 12 will send the sound.

Time-delay automatic stopping circuit 6 is for establishing when holding when automobile catastrophe, during automobile is exercised, when taking place to rob car, is serially connected with power supply and the button switch AN between the automatic stopping circuit of delaying time as long as the driver clicks ₁, relay J then ₂Must be electric, its contact J _2-1(power supply is through R in closed self-insurance ₈To cond C ₂C is worked as in charging ₂DW conducting when last voltage surpasses the breakdown reverse voltage of stabilivolt DW, aerotron BG ₃Conducting, relay J ₃Get electric power supply and the J of being serially connected with ₁Between long-armed contact J _3-1Disconnect master relay J ₁Dead electricity stops automobile, and being in can't starting state.Loudspeaker 12 send alarm sound simultaneously.Suitably select R ₈, C ₂Etc. the voltage stabilizing value may command delay time of size and DW, have an opportunity to be out of danger to protect the driver, and automobile is rested in the suitable distance.Click button switch AN ₂The automatic stop state is removed.

In order to prevent that the someone from attempting to replace electron key and exploratory unblanking with potential device, this programme is provided with lockout circuit 4, and it is by operational amplifier A ₃Form voltage comparator, its comparative voltage U ₃By resistance R ₄, R ₅Dividing potential drop and getting, and U ₃Must be greater than U ₂, input voltage UA imports from positive input, when not inserting electron key, and U _ANear power line voltage.U _A＞U ₃, this moment A ₃Be output as high level, aerotron BG ₁Instead end partially, do not influence normal use; When having inserted an off-square resistance or a potential device, U _BBe high level, as U this moment _A＜U ₂Or＜U ₁, because U _BBe high level, A ₃Be output as low level, aerotron BG ₁The positively biased conducting, U _BPass through BG ₁, D ₁, R ₆Fast to cond C ₁Charging; In case potential device is transferred to U _ABe in ［ U ₂, U ₁In the scope.Discriminator circuit 3 output low levels, but because aerotron BG ₁End cond C ₁Voltage will pass through R ₆, D ₂Still make U _BMaintain high level, make master relay J ₁Can not work.This section is held time and is depended mainly on R ₇C ₁Time constant.R ₇" R ₆, time constant can reach tens of minutes, so just makes the exploratory possibility of unblanking almost not have.

In order to prevent that the someone from attempting to open the automobile protecgulum and destroying circuit, this programme has been installed a micro-switch WK on the automobile protecgulum, and when the people stealthily opened protecgulum, WK connected, and was connected to the relay J at exit skirt two ends ₄Must be electric, J _4-1Closed self-insurance, J _4-2Connect the power supply of emitter 10 and work, send the signalisation driver to receiver 11, alarming horn 12 sends the sound simultaneously.

But this programme alternative use as without radio alarming the time, can be saved transmitter and receiver.Or only control startup, ignition system and do not control main fuel feed, installation workload is significantly reduced and cost-cutting.

The advantage of this programme is that electronic lock simple installation, wiring are few, only is connected with corresponding electronics master relay contact with four leads to get final product; Easy to use, with resistance R ₀Be installed in the Miniature plug, be inserted into socket CE and get final product, volume is very little, is easy to carry, and all the other operations are the same with usual manner, does not change driver's custom; Good confidentiality is by level up and down and the change resistance R that changes discriminator circuit ₁Resistance, R ₀Can obtain up to ten thousand kinds of different resistances and cooperate with it, with the confidentiality that improves electronic lock with reduce its repetition rate of coding; Multi-functional, this scheme antitheft except that having, anti-misfortune, blockade and the damage preventing alarm function, can be extended to the radio alarming function as required, be convenient to the state of remote measurement automobile, guarding portion can be cut off circuit or oil circuit arbitrarily; Cost is low, compares with existing same device, and the used electronic component of this programme is few, less demanding, cost reduces, and has good popularizing application prospect.

Fig. 1 is the composition block scheme of electronic lock;

Fig. 2 is the electrical schematic diagram of electronic lock;

Fig. 3 is plug or electron key scheme drawing;

Fig. 4 is electronic lock and automobile starting, ignition system, and alarming horn connects and tamper-proof switch is electrically connected scheme drawing;

Fig. 5 is the scheme drawing of electronic lock control main fuel feed.

Embodiment to this programme is further described below in conjunction with accompanying drawing:

Resistance R ₀Be contained in one the two core Miniature plug, become plug-type electronic key 1, among the socket CE in being inserted into input circuit 2, R ₀With R ₁, W ₁Dividing potential drop forms the input voltage U of discriminator circuit 3 _APresent embodiment adopts a slice LM324 class, four integrated operational amplifiers to constitute discriminator circuit 3, the voltage comparator in lockout circuit 4 and the control circuit 5.Input circuit 2, discriminator circuit 3, lockout circuit 4, control circuit 5 and time-delay automatic stopping circuit 6 place an airtight metal, and socket CE can be installed on the instrument face plate of operator's compartment or the side, and the disengage button AN in the time-delay automatic stopping circuit ₂, must be placed in a difficult place of being perceiveed by the people, to increase disguise, time-delay button AN ₁Preferably be installed in below the gauge panel, hidden and easily by the place of driver operation.

Master relay J ₁One group of open contact J _1-2Be serially connected between automobile key switch 13 and the starter motor M; One group of open contact J _1-2Be serially connected between automobile key switch 13 and the ignition system, be serially connected in high-tension coil B such as Fig. 4 ₁Primary winding and platinum contact 14 between; Another group open contact J _1-4Be serially connected in power supply E ₊And between the coil and ground of the electromagnetic valve 15 of control main fuel feed 16 break-makes.As shown in Figure 5; J ₁One group of normally closed contact J _1-1Be serially connected between automobile key switch 13 and the loudspeaker 12.

Micro-switch WK is installed on the automobile protecgulum inner face, makes it when the automobile protecgulum closes its contact open.

All answer fixation from operator's compartment to the wiring of driving engine, preferably place in the metal tube, to guarantee reliable operation.

Used power supply adopts automobile power source.

Claims (4)

1, a kind of multifunction automobile electronic is locked it and mainly is made up of power supply, electron key (1), discriminator circuit (3), lockout circuit (4), control circuit (5), time-delay automatic stopping circuit (6) and loudspeaker (12) etc., it is characterized in that:

1.1 discriminator circuit (3) is a upper and lower limit voltage comparator, electron key (1) is a sample resistance R of discriminator circuit (3) input voltage ₀The mouth of discriminator circuit (3) links to each other with the input end of control circuit (5);

1.2 control circuit (5) is mainly by voltage comparator A ₄, drive triode BG ₂With master relay J ₁Form J ₁Open contact be serially connected with between power supply or automobile key switch (13) and the starter motor M respectively, between power supply or automobile key switch (13) and the ignition system, J ₁Normally closed contact be serially connected with between automobile key switch (13) and the loudspeaker (12);

1.3 lockout circuit (4) is mainly by voltage comparator A ₃, switch triode BG ₁And charging and discharging circuit D ₁, R ₆, C ₁, R ₇And D ₂Form, its input is the voltage on the electron key (1), and one of discharge loop is connected on the input end of control circuit (5);

1.4 time-delay automatic stopping circuit (6) is mainly by charge circuit R ₈, C ₂Stabilivolt DW, switch triode BG ₃And relay J ₃Form button AN ₁Be connected between power supply and the time-delay automatic stopping circuit (6) relay J ₃One group of normally closed contact J _3-1Be serially connected with master relay J in power supply and the control circuit (5) ₁Between.

2, Automobile Electronie Lock as claimed in claim 1 is characterized in that on the preceding interior surface of automobile a micro-switch WK being installed, and it is serially connected between power supply and the loudspeaker.

3, Automobile Electronie Lock as claimed in claim 1 is characterized in that master relay J in the control circuit (5) ₁One group of open contact be serially connected with between the coil of electromagnetic valve (15) of power supply and control main fuel feed (16) break-make.

4, Automobile Electronie Lock as claimed in claim 1 is characterized in that at loudspeaker (12) two ends and is connected to relay J ₄, J ₄Open contact be serially connected on the power supply of emitter (10).

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