CN2188505Y - Anti-theft and anti-driving after drinking controller for vehicle - Google Patents

Abstract

The utility model relates to an anti-theft and anti-driving after drinking controller for a vehicle, using a relay circuit controlled by a trigger and a gas-sensitive resistance to control the power supply of an ignition coil for the vehicle, using the gas-sensitive resistance to control the interlock switch of a relay through a differential circuit and a comparison circuit and using a trigger circuit connected with the ignition coil for the vehicle to control a loudspeaker and the interlock switch of the relay, the relay and the gas-sensitive resistance are connected in series to compose an anti-damage circuit, and therefore, the anti-theft and anti-driving after drinking controller for the vehicle effectively controls the ignition coil for the vehicle. The utility model can prevent the theft as well as prevent the driving after drinking, having anti-damage function, high integrity, few discrete component, high reliability, simple structure and low cost.

Description

Anti-theft and anti-driving after drinking controller for vehicle

The utility model is to use the anti-controller of drivining a car under the influence of alcohol of automobile burglar of the relay circuit Control of Automobile ignition coil power supply that is subjected to binary pair and gas sensing resistance control.

Along with increasing of self-propelled vehicle quantity, the case of theft self-propelled vehicle is more and more, not only brings very big economic loss, and brings many inconvenience to life.

And in the traffic accident of self-propelled vehicle, particularly automobile, very big some is all driven when intoxicated with the driver and is lost the ability of judging and handling emergency case very big relation is arranged.

The purpose of this utility model, be to design the anti-controller of drivining a car under the influence of alcohol of a kind of automobile burglar, when after the driver leaves automobile, having human desires to start automobile, provide audible alarm and power supply that can actv. point of cutoff fire coil immediately, and when the driver drivings a car under the influence of alcohol, power supply that also can actv. point of cutoff fire coil can't start self-propelled vehicle.

The utility model uses gas sensing resistance through difference channel and comparator circuit control relay interlock switch, trigger circuit control loudspeaker that use links to each other with automobile ignition coil and relay interlock switch, a relay is connected in series the tamper-proof circuit of formation with gas sensing resistance, thereby finishes effective control the automobile ignition coil power supply.

Principle of work of the present utility model is as follows:

1. antitheft, when the driver leaves car controller switches received antitheft position, promptly connect the power supply of trigger circuit, when starting automobile cut-in point fire coil, the people triggered trigger circuit, the alarm thereby the connection loud speaker is sounded, the power supply of cutin relay switch point of cutoff fire coil can't start automobile simultaneously;

2. anti-drivining a car under the influence of alcohol, when the driver pushes enable position with controller switches, being about to difference channel and comparator circuit connects, if the alcohol content in driver's breath is above standard, the gas sensing resistance resistance descends, the output of difference channel drives the power supply of comparator circuit cutin relay switch point of cutoff fire coil, and automobile can't be started;

3. tamper-proof, unsuccessful if the driver drivings a car under the influence of alcohol with gas sensing resistance destruction, the relay that then is connected in series outage with gas sensing resistance, its open contact disconnects the power supply of point of cutoff fire coil, and automobile can't be started.

The utlity model has following advantage:

1. can antitheftly can prevent again that the driver drivings a car under the influence of alcohol, a tractor serves several purposes, function is many;

2. circuit layout is ingenious, has the oneself and protects anti-tamper-proof function, can actv. prevents from that the driver from drivining a car under the influence of alcohol to cause the accident;

3. circuit level height, discrete component are few, the reliability height;

4. simple in structure, cost is low, is easy to manufacture.

Accompanying drawing is an embodiment of the present utility model.

Accompanying drawing 1 is schematic circuit diagram.

Among this embodiment, the T1 gas sensing resistance; J1, J2, J3 relay; IC1 mu balanced circuit 7806; IC2 trigger circuit 9561; IC3 comparator circuit 8751; The Y loud speaker; The L inductance; The B transformer; The power supply use that links to each other with automobile power source.

Embodiment below in conjunction with accompanying drawing is explained in detail the utility model.

(1). gas sensing resistance (T1) joins through the input end of difference channel and switch (K1-2) and comparator circuit (IC3), and relay (J2) is connected between comparator circuit (IC3) mouth and the power positive end;

(2). relay (J1) and gas sensing resistance (T1) are serially connected between power positive end and the negative terminal, the open contact (J1-1) and the relay (J3) of relay (J1) are serially connected between power positive end and the negative terminal, and the open contact (J3-1) of transformer (B) primary winding and relay (J3) and the normally closed contact (J2-1) of relay (J2) are serially connected between power positive end and the negative terminal;

(3). mu balanced circuit (IC1) is connected between power positive end and the negative terminal, switch (K1-1), trigger circuit (IC2), loud speaker (Y), electric capacity (C1), inductance (L) are serially connected between the mouth of mu balanced circuit (IC1) and comparator circuit (IC3), in running condition, transformer (B) output primary links to each other with automobile ignition coil with trigger circuit (IC2).

Claims (1)

1, the anti-controller of drivining a car under the influence of alcohol of automobile burglar is characterized in that:

(1). gas sensing resistance (T1) joins through the input end of difference channel and switch (K1-2) and comparator circuit (IC3), and relay (J2) is connected between comparator circuit (IC3) mouth and the power positive end;

(2). relay (J1) and gas sensing resistance (T1) are serially connected between power positive end and the negative terminal, the open contact (J1-1) and the relay (J3) of relay (J1) are serially connected between power positive end and the negative terminal, and the open contact (J3-1) of transformer (B) primary winding and relay (J3) and the normally closed contact (J2-1) of relay (J2) are serially connected between power positive end and the negative terminal;

(3). mu balanced circuit (IC1) is connected between power positive end and the negative terminal, switch (K1-1), trigger circuit (IC2), loud speaker (Y), electric capacity (C1), inductance (L) are serially connected between the mouth of mu balanced circuit (IC1) and comparator circuit (IC3), in running condition, transformer (B) output primary links to each other with automobile ignition coil with trigger circuit (IC2).

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