CN2201665Y

CN2201665Y - Wine and smoke detecting auto-switch for motor-vehicle

Info

Publication number: CN2201665Y
Application number: CN 94212026
Authority: CN
Inventors: 陈显明
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-05-13
Filing date: 1994-05-13
Publication date: 1995-06-21
Anticipated expiration: 2004-05-13

Abstract

The utility model relates to a wine and smoke detecting auto-switch for a motor vehicle, comprising a voltage stabilizing power supply (1), a sensor circuit (2), an operational amplifier circuit (3), a delay circuit (4) and an alarm circuit (5). The power supply of 12V is supplied for the sensor circuit (2), the operational amplifier circuit (3), the delay circuit (4) and the alarm circuit (5) with stable voltage through the voltage stabilizing power supply (1), wine and smoke signal is sent to the operational amplifier circuit (3) by the sensor circuit (2) and then is connected with the alarm circuit (5) through the delay circuit (4), and the alarm circuit (5) sends alarm signal to an alarm (BL) and cuts off the ignition circuit of the motor vehicle. The utility model is directly installed on the ignition circuit of an automobile, and the wine and smoke detecting auto-switch for the motor vehicle can avoid drivers' driving behaviors against traffic regulation, comprising drunk driving or smoking when driving.

Description

Wine and smoke detecting auto-switch for motor-vehicle

The utility model relates to a kind of motor vehicle safety pilot instrument.

Motor vehicle operator driving a car under the influence of alcohol or when driving smoking to take sb's mind off sth be the one of the main reasons that causes pernicious traffic hazard to take place.The existing instrument of checking whether the driver drinks in the prior art, but this instrument uses the motoring offence that can not stop human pilot fully when mainly being checked vehicles by the traffic patrol police.

The purpose of this utility model be carry a kind of can to driving a car under the influence of alcohol or the driver when driving smoking give the alarm and cut off the motor vehicle safety pilot instrument of vehicle ignition circuit.

The utility model is by stabilized voltage supply (1), sensor circuit (2), discharge circuit (3), delay circuit (4) and warning circuit (5) are formed, the 4th of the ic chip 4 of the supply delay circuit (4) of 12V power supply after ic chip 2 voltage stabilizings of stabilized voltage supply (1), the 4th of the ic chip 5 of 8 pin and warning circuit (5), 8 pin, the 1st of the alcohol sensor (QM) of the electric current confession sensor circuit (2) after ic chip 1 voltage stabilizing of stabilized voltage supply (1), the 4th pin of the ic chip 3 of 3 pin and discharge circuit (3), the 2nd pin of alcohol sensor (QM) is connected to current-limiting resistance R1, the 4th pin connecting resistance R2 and R3 of alcohol sensor (QM), give the 3rd pin of the ic chip 3 of discharge circuit (3) for after resistance R 2 dividing potential drops sampling voltage, the triode (BG) of discharge circuit (3) connect delay circuit (4) ic chip 4 the 2nd, 6 pin, the 4th of the ic chip 5 of normal battle of (K2) circuit taking alarm (5) of the relay (J) of delay circuit (4), 8 pin, the 3rd pin of ic chip 5 connects the 4th of ic chip 6,8 pin, the 3rd pin device taking alarm (BL) of IC6.

Advantage of the present utility model is: 1, the utlity model has and report to the police and the dual-use function of stapling machine motor vehicle firing circuit, smoking causes the generation of the traffic hazard that reason such as driver distraction causes in the time of can avoiding the driver to driving a car under the influence of alcohol and drive; 2, because adopted ic chip 1 and IC2, so the utility model can directly insert automobile storage battery as stabilized voltage supply; 3, newly except that alcohol sensor (QM), other is common components, so cost is lower in this practicality, makes easily.

Accompanying drawing is the utility model circuit diagram.

As shown in the figure: the utility model is made up of stabilized voltage supply (1), sensor circuit (2), discharge circuit (3), delay circuit (4), warning circuit parts such as (5).The 12V power supply after ic chip 2 voltage stabilizings of stabilized voltage supply (1), supply with delay circuit (4) ic chip 4 the 4th, the 4th of the ic chip 5 of 8 pin and warning circuit (5), 8 pin, the 1st of the alcohol sensor (QM) of the electric current confession sensor circuit (2) after ic chip 1 voltage stabilizing, the 4th pin of the ic chip 3 of 3 pin and discharge circuit (3), the 2nd pin of alcohol sensor (QM) meets current-limiting resistance R1, the 4th pin connecting resistance R2 and R3 of alcohol sensor (QM), give the 3rd pin of the ic chip 3 of discharge circuit (3) for after resistance R 2 dividing potential drops sampling voltage, the triode (BG) of discharge circuit (3) connect delay circuit (4) ic chip 4 the 2nd, 6 pin, the 4th of the ic chip 5 of normal battle of (K2) circuit taking alarm (5) of the relay (J) of delay circuit (4), 8 pin, the 3rd pin of ic chip 5 connects the 4th of ic chip 6,8 pin, the 3rd pin device taking alarm (BL) of ic chip 6.

Aforesaid ic chip 1 is the AN7806 integrated package, and ic chip 2 is the AN7812 integrated package, and IC3 is the LM124 integrated package, and IC4, IC5, IC6 are the KA555 integrated package; The electrode resistance of alcohol sensor (QM) is 40K ohm--700K ohm; Resistance R 1 is the current-limiting resistance of alcohol sensor (QM), and after resistance R 1 current limliting, the electric current of alcohol sensor (QM) is between 125mA--150mA; The 1st pin of alcohol sensor (QM) is connected to adjustable resistance R4; The ic chip 3 of discharge circuit (3) is made up of A, B, C three parts, its the 1st pin is connected to diode (D1), capacitor C 5, be connected to resistance R 8 between the 1st pin and the 5th pin, the 10th pin is connected to resistance R 6 and R9, the 9th pin is connected to resistance R 7 and capacitor C 6, the resistance value of resistance R 7 is 1M ohm, and capacitor C 6 is 33uF; The 2nd pin of the ic chip 4 of delay circuit (4) is connected to electric capacity (C7), and the 3rd pin is connected to diode (D2), and the 6th pin is connected to resistance (R11).The resistance of resistance R 11 is 3M ohm, and capacitor C 7 is 2000uF; The input of ic chip 1, output terminal are connected to filter capacitor C1 and C2 respectively, and the input of ic chip 2, output terminal are connected to filter capacitor C3 and C4 respectively.

Principle of work to each ingredient of the present utility model further specifies as follows below:

Stabilized voltage supply (1) comprises two ic chips 1 and IC2, the effect of IC2 is to prevent the big electric current and the high pressure of motor car engine output, IC2 adopts the AN7812 integrated package, the 4th, 8 pin of the 4th, 8 pin of the ic chip 4 of the voltage confession delay circuit (4) after the IC2 voltage stabilizing and the ic chip 5 of warning circuit (5).IC1 adopts the AN7806 integrated package, after the input of 12V power supply, by the 4th pin of the ic chip 3 of the 1st pin, the 3rd pin and the discharge circuit (3) of confession alcohol sensor (QM) after the IC1 voltage stabilizing.Alcohol sensor (QM) the 2nd pin is connected to current-limiting resistance R1, resistance R 1 is limited to the electric current of alcohol sensor (QM) between the 125mA1-50mA, the 4th pin connecting resistance R2 of alcohol sensor (QM), connecting resistance R3 again, provide a sampling voltage after resistance R 2 dividing potential drops and give the 3rd pin of the ic chip 3 of discharge circuit (3), the electrode resistance Rs of alcohol sensor (QM) in pure air is 40K ohm--700K ohm, response time t1＜10 second, release time t2＜30 seconds, so when energized, the voltage of alcohol sensor (QM) the 4th pin raises, and becomes stable state after 180 seconds, and the 4th pin voltage of alcohol sensor during stable state (QM) is lower, in the steady-state process, alcohol sensor (QM) receives wine, during the flue gas body, the 4th pin voltage uprises, the principle of work and the characteristic of Here it is alcohol sensor itself.

The 3rd pin of the integrated package of discharge circuit (3) is by after resistance R 2 dividing potential drops, obtain a sampling voltage, when the moment of energized, the 3rd pin voltage increases, this situation has the 3rd pin greater than the 2nd pin, cause A group output high level (the 1st pin), so just produce relay (J) misoperation and stopped driving and warning, in order to address this problem, C group by ic chip 3 is construed as limiting delay circuit, and the length of its restriction delay time depends on capacitor C 6, resistance R 7, the optimum value that provides in the utility model are that resistance R 7 is 1M ohm, C6 is 33uF, and the restriction delay time is 33 seconds.In the moment of energising, the 10th pin voltage of IC3 is greater than the 9th pin, IC3 the 8th pin is a high level, the 2nd pin voltage that so just makes IC3 is greater than the 3rd pin, and the 1st pin is a low level, and diode (D1) ends, ic chip 3 the 5th pin is a low level, the 6th pin is a high level, and the 7th pin is a low level, and triode (BG) base stage is ended because of not importing.Illustrate that when diode (D1) conducting having wine flue gas body to force IC3 the 1st pin is noble potential (approximating supply voltage E), capacitor C 5 very charging quickly to the 5th pin voltage of IC3 equals the 1st pin, equal supply voltage E, greater than the 6th pin, equal resistance R 9 and multiply by supply voltage E divided by resistance R 9+R6, at this moment the 7th pin is a high level, triode (BG) conducting and start delay circuit (4).When capacitor C 6 voltages when R7 charges to IC3 the 9th pin greater than the 10th pin, the 8th pin is a low level, the normal level when IC3 the 2nd pin becomes stable state, IC3 the 2nd, 3 each level of pin restore the normal relations.During stable state, after resistance R 4 is adjusted to intermediate value, IC3 the 7th pin equals 0 during this period of time, be low level, multiply by supply voltage E divided by resistance R 5+R4, under the situation of smokeless fume body but IC3 the 2nd pin equals resistance R 5, regulate resistance R 2 again, make IC3 the 3rd pin be slightly less than the 2nd pin, when adjusting sensitivity, can regulate R2 and R4 by wine flue gas body.

Delay circuit (4) adopts startup formula delay circuit, its ic chip 4(KA555) constituting monostable finishes, after the circuit energized, time-delay enters stable state, the voltage of timing capacitor C7 is higher than supply voltage E, at this moment for this equivalent trigger of IC4, when two inputs all are high level (R=1, S=1), output (being IC4 the 3rd pin) is low level, not adhesive of relay (J), after the driver drinks, to drive during smoking, the detected gas of alcohol sensor (QM) makes the 3rd pin of the ic chip 3 of discharge circuit (3), the 7th pin current potential raises and forces triode (BG) conducting, capacitor C 7 is discharged to zero potential immediately, at this moment the input that the equivalence of IC4 triggers becomes low level, and (be R=0, S=0), output terminal the 3rd pin of IC4 output high level (promptly, V0=1), relay (J) adhesive, normally closed point (K1) disconnects, and automobile ignition switch cuts off the power supply and can't drive, normal make war (K2) meets the 4th of IC5,8 pin are closed and alarm is reported to the police immediately, inform the driver.If any long cigarette, fume body, time-delay will continue to prolong, at this moment power supply charges to capacitor C 7 by resistance R 11, surely begin temporarily, when the voltage on the capacitor C 7 be raised to supply voltage 2/3 the time, what ic chip 4 equivalences triggered is input as high level (promptly, R=1, S=1), so output switching activity becomes low level, IC4 the 3rd pin voltage equals zero, relay (J) discharges normally closed point (K1), and normal make war (K2) disconnects, and automobile can cruising, alarm (BL) does not stop because of there being electricity, can travel to inform the driver.Delay time equals the long-pending of resistance R 11 and capacitor C 7, and optimum value of the present utility model is set at R11 and equals 3M ohm, and capacitor C 7 equals 2000uF, and delay time is 6000 seconds.

Warning circuit (5) is made up of two ic chips 5 and IC6, they all constitute the reaction type astable circuit separately, when energized, voltage on the capacitor C 9 is zero, but to this equivalent trigger of IC5, is input as low level (promptly, R=0, S=0), be output as high level (being V0=1), the voltage on the capacitor C 9 rises to 2/3 o'clock greater than supply voltage, the equivalence trigger be input as high level (promptly, R=1, S=1), output switching activity be low level (promptly, V0=0), when the voltage of capacitor C 9 drop to gradually be low to moderate supply voltage 2/3 the time, be entered as low level (that is R=0,, S=0), output is turned into high level again, and (that is, V0=1), the generation chimes of doom goes round and begins again like this.The output of ic chip 5 the 3rd pin connects the 4th, 8 pin of ic chip 6, and IC6 is all the same with principle, circuit, the working method of IC5.

The utility model is contained in alcohol sensor (QM) on the pilothouse bearing circle or before the bearing circle in use, and red line inserts positive source, and black line connects power cathode, and the input end that blue line connects automobile ignition switch can use.

Claims

1, a kind of motor vehicles wine cigarette detects automatic switch, it is characterized in that by stabilized voltage supply (1), sensor circuit (2), discharge circuit (3), delay circuit (4) and warning circuit (5) are formed, the 4th of the ic chip 4 of the voltage supply delay circuit (4) of 12V power supply after ic chip 2 voltage stabilizings of stabilized voltage supply (1), the 4th of the ic chip 5 of 8 pin and alarm circuit (5), 8 pin, the 1st of the alcohol sensor (QM) of the electric current confession sensor circuit (2) after ic chip 1 voltage stabilizing of stabilized voltage supply (1), the 4th pin of the ic chip 3 of 3 pin and discharge circuit (3), the 2nd pin of alcohol sensor (QM) is connected to current-limiting resistance R1, the 4th pin connecting resistance R2 and R3 of alcohol sensor (QM), give the 3rd pin of the ic chip 3 of discharge circuit (3) for after resistance R 2 dividing potential drops sampling voltage, the triode (BG) of discharge circuit (3) connect delay circuit (4) ic chip 4 the 2nd, 6 pin, the 4th of the ic chip 5 of normal battle of (K2) circuit taking alarm (5) of the relay (J) of delay circuit (4), 8 pin, the 3rd pin device taking alarm (BL) of IC6.

2, motor vehicles wine cigarette according to claim 1 detects automatic switch, it is characterized in that described ic chip 1 is the AN7806 integrated package, and ic chip 2 is the AN7812 integrated package.

3, motor vehicles wine cigarette according to claim 1 detects automatic switch, it is characterized in that the electrode resistance of the alcohol sensor (QM) of described sensor circuit is 40K ohm--700K ohm;

4, motor vehicles wine cigarette according to claim 1 detects automatic switch, it is characterized in that resistance R 1 is the current-limiting resistance of alcohol sensor (QM), and after resistance R 1 current limliting, the electric current of alcohol sensor (QM) is between 125mA--150mA.

5, motor vehicles wine cigarette according to claim 1 detects automatic switch, it is characterized in that response time t1＜10 second of alcohol sensor (QM), release time T2＜30 seconds.

6, motor vehicles wine cigarette according to claim 1 detects automatic switch, and the IC4 that it is characterized in that described delay circuit (4) is the KA555 integrated package.

7, motor vehicles wine cigarette according to claim 1 detects automatic switch, it is characterized in that two ic chips 5 of described warning circuit (5) and the integrated package that IC6 is KA555.

8, motor vehicles wine cigarette according to claim 1 detects automatic switch, it is characterized in that the 2nd pin of the ic chip 4 of described delay circuit (4) is connected to electric capacity (C7), and the 3rd pin is connected to diode (D2), and the 6th pin is connected to resistance (R11).

9, described according to Claim 8 motor vehicles wine cigarette detects automatic switch, and the resistance that it is characterized in that described resistance R 11 is 3M ohm, and capacitor C 7 is 2000uF.

10, detect automatic switch according to the described motor vehicles wine of claim 1 cigarette, the ic chip 3 that it is characterized in that described discharge circuit (3) is made up of A, B, C three parts, its the 1st pin is connected to diode (D1), electric capacity (C5), be connected to resistance R 8 between the 1st pin and the 5th pin, the 10th pin is connected to resistance R 6 and R9, the 9th pin resistance R 7 and capacitor C 6.

11, motor vehicles wine cigarette according to claim 10 detects automatic switch, and the resistance value that it is characterized in that described resistance R 7 is 1M ohm, and capacitor C 6 is 33uF.

12, motor vehicles wine cigarette according to claim 1 detects automatic switch, it is characterized in that the input of described ic chip 1, output terminal are connected to filter capacitor C1 and C2 respectively, and the input of ic chip 2, output terminal are connected to filter capacitor C3 and C4.

13, motor vehicles wine cigarette according to claim 1 detects automatic switch, it is characterized in that being connected to adjustable resistance R4 between the 3rd pin of ic chip 3 of the 1st pin of alcohol sensor (QM) of described sensor circuit (2) and discharge circuit (3).