CN104766442A - Drunk driving warning device - Google Patents
Drunk driving warning device Download PDFInfo
- Publication number
- CN104766442A CN104766442A CN201510189201.5A CN201510189201A CN104766442A CN 104766442 A CN104766442 A CN 104766442A CN 201510189201 A CN201510189201 A CN 201510189201A CN 104766442 A CN104766442 A CN 104766442A
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- circuit
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- alcohol gas
- drunk driving
- electronic switch
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
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- Chemical Kinetics & Catalysis (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Electrochemistry (AREA)
- Immunology (AREA)
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention provides a drunk driving warning device. The drunk driving warning device is characterized by comprising a 12-V direct-current power source, a 5-V voltage stabilizing circuit, an alcohol gas detecting circuit, an emitter follower and a sounding device control circuit, wherein in the alcohol gas detecting circuit, the type of an alcohol gas sensitive sensor IC1 is CM900, and the type of a high-speed electronic switch in the sounding device control circuit is TWH8778. At present, the number of traffic accidents caused by drunk driving accounts for a large ratio of the sum of traffic accidents; although drunk driving is quite dangerous and traffic safety codes strictly prohibit drunk driving, drunk driving continues despite prohibition. By the adoption of the drunk driving warning device, whether a driver drinks alcohol or not can be automatically detected in a vehicle, if the driver drinks alcohol, the drunk driving warning device gives out a loud warning source to remind the driver not to drive and remind people in the same vehicle to discourage the drinker from driving, and therefore personal safety is guaranteed.
Description
Technical field
The invention belongs to electronic technology and vehicle electric field, is to drive when intoxicated alarm device about one.
Background technology
At present, to drive when intoxicated caused traffic hazard in China, accounted for the sizable ratio of traffic hazard sum.In order to prevent driving when intoxicated of driver, on road, traffic police takes alcohol tester to detect the gas that driver breathes out usually, content alcohol in if the gas that driver breathes out being detected, traffic police is how many according to alcohol content, reminds driver by taking respectively or processes by provisionally suspending the different modes such as driving license.Therefore, this mode can form a kind of deterrence to drunk driving behavior to a certain extent, can reach minimizing driver's wine-drinking to a certain extent and drives and cause the object of traffic accident.
Very dangerous although drive when intoxicated, traffic safety code is strictly forbidden, this type of thing is more than through prohibiting repeatly.Whether alarm device of driving when intoxicated of the present invention can automatically detect motorist and drink in car, as: detect that motorist drinks, namely alarm device of driving when intoxicated sends strong alarm call, motorist is reminded to cut and can not drive, also remind people in the same car person to try to stop alcohol user not drive, to guarantee personal safety.
Below describe in detail alarm device of driving when intoxicated of the present invention necessity involved in implementation process, guardian technique content.
Summary of the invention
Goal of the invention and beneficial effect: at present, to drive when intoxicated caused traffic hazard in China, accounted for the sizable ratio of traffic hazard sum.In order to prevent driving when intoxicated of driver, on road, traffic police takes alcohol tester to detect the gas that driver breathes out usually.Very dangerous although drive when intoxicated, traffic safety code is strictly forbidden, this type of thing is more than through prohibiting repeatly.Whether alarm device of driving when intoxicated of the present invention can automatically detect motorist and drink in car, as: detect that motorist drinks, namely alarm device of driving when intoxicated sends strong alarm call, motorist is reminded to cut and can not drive, also remind people in the same car person to try to stop alcohol user not drive, to guarantee personal safety.
Circuit working principle: alarm device of driving when intoxicated is made up of alcohol gas sensor IC1, emitter follower, electronic switch and information ring circuit.Alcohol user is when close to this device, the alcohol gas that alcohol gas sensor IC1 experiences in surrounding environment divides the period of the day from 11 p.m. to 1 a.m, its output end voltage rises immediately, NPN transistor VT1 emitter-base bandgap grading output voltage also synchronously rises, when this voltage reaches the conducting of high speed electronic switch IC2, carry source of sound buzzer HA energising sounding.Operating voltage due to alcohol gas sensor IC1 is 5V, therefore must using automobile 12V direct supply operating voltage as alcohol gas sensor IC1 and NPN transistor VT1 after resistance R4 step-down, voltage stabilizing diode DW voltage stabilizing obtain 5V voltage.
High speed electronic switch IC2 is high speed electronic switch integrated circuit TWH8778, and its 5th pin is for controlling pole, and control voltage is about 1.6V, by the break-make having, can not control follow-up load circuit power supply fast of control voltage.When the 5th pin of high speed electronic switch IC2 is without control voltage, high speed electronic switch IC2 turns off, its 1st, end between 2 pin.When the 5th pin of high speed electronic switch IC2 has control voltage, high speed electronic switch IC2 opens, its 1st, conducting between 2 pin, alcohol gas sensor IC1 output end voltage can raise along with the increase of alcohol gas concentration in environment.NPN transistor VT1 forms emitter follower, and to improve the output loading capability of alcohol gas sensor IC1, buffering subsequent control circuit is on the impact of alcohol gas sensor IC1.At ordinary times, alcohol gas sensor IC1 output end voltage is " 0 ", and NPN transistor VT1 ends, and it is also " 0 " that emitter follower exports, and subsequent conditioning circuit does not work.TWH8778 inside includes overvoltage, overcurrent and the protection circuit such as overheated, makes circuit working stable, reliable.
When high speed electronic switch IC2 the 2nd pin exports 12V, carry source of sound buzzer HA and obtain electric sounding.When high speed electronic switch IC2 the 2nd pin exports as 0V, carry source of sound buzzer HA and stop sounding, its sounding effect to be that buzzer is rung 1s, stops 0.5s, rings 1s again, stopped 0.5s again ...
Technical scheme: alarm device of driving when intoxicated, it comprises 12V direct supply, 5V mu balanced circuit, alcohol gas testing circuit, emitter follower and buzzer control circuit, it is characterized in that:
5V mu balanced circuit: it is made up of voltage stabilizing diode DW, electrochemical capacitor C1 and resistance R4, one end of circuit anode VCC connecting resistance R4, the negative pole of another termination voltage stabilizing diode DW of resistance R4 and the positive pole of electrochemical capacitor C1, the positive pole of voltage stabilizing diode DW and the negative pole connection circuit ground GND of electrochemical capacitor C1;
Alcohol gas testing circuit: the model that alcohol gas sensor IC1 selects is CM900, the vdd terminal of alcohol gas sensor IC1 connects the negative pole of voltage stabilizing diode DW, the VSS termination circuit ground GND of alcohol gas sensor IC1, the signal output part of alcohol gas sensor IC1 connects emitter follower;
Emitter follower: it is made up of resistance R1, NPN transistor VT1, resistance R2, resistance R3 and electric capacity C2, the base stage of NPN transistor VT1 connects the signal output part of alcohol gas sensor IC1 by resistance R1, the emitter of NPN transistor VT1 is by resistance R3 and electric capacity C2 connection circuit ground GND;
Buzzer control circuit: it is by high speed electronic switch IC2 and carry source of sound buzzer HA and form, the model that high speed electronic switch IC2 selects is TWH8778, the 1st pin connection circuit positive pole VCC of high speed electronic switch IC2,5th pin of high speed electronic switch IC2 connects the emitter of NPN transistor VT1, the 4th pin connection circuit ground GND of high speed electronic switch IC2,2nd pin of high speed electronic switch IC2 connects the positive pole carrying source of sound buzzer HA, carries the negative pole connection circuit ground GND of source of sound buzzer HA;
12V DC power anode connection circuit positive pole VCC, the negative pole of 12V direct supply is connected with circuit ground GND.
Accompanying drawing explanation
Accompanying drawing 1 is that routine circuit working schematic diagram executed by alarm device of driving when intoxicated provided by the invention.
Embodiment
According to drive when intoxicated alarm device circuit working schematic diagram and accompanying drawing explanation shown in accompanying drawing 1, and according to annexation between components and parts in each several part circuit described in summary of the invention, and components and parts technical parameter described in embodiment requires and circuit production main points are carried out enforcement and can be realized the present invention, is further described correlation technique of the present invention below in conjunction with embodiment.
The technical parameter of components and parts and selection requirement
IC1 is alcohol gas sensor, and the model selected is CM900;
IC2 is high speed electronic switch, and the model selected is TWH8778;
VT1 is NPN transistor, and the model selected is 2SC9013 or 2SC9014, requires β >=140;
DW is voltage stabilizing diode, the voltage stabilizing diode that use power is 1W, the requirement of voltage stabilizing value is 5V;
The resistance of resistance R1 is 10K Ω, and resistance R2 resistance is 5.1K Ω, and resistance R3 resistance is 5.1K Ω, and the resistance of resistance R4 is 1K Ω;
C1 is electrochemical capacitor, and use capacity is 470 μ F/25V; C2 is electric capacity, and use capacity is 0.1 μ F electric capacity of the dacron;
HA is for carrying source of sound buzzer, and suggestion selects the buzzer of interval sounding to increase alarming effect.
Circuit production main points, circuit debugging and using method
Because the circuit structure of alarm device of driving when intoxicated is fairly simple, as long as the electronic devices and components performance generally selected is intact, and the components and parts annexation to specifications in accompanying drawing 1 is welded, physical connection line and welding quality are through carefully checking correctly, and circuit of the present invention only needs to debug simply and can normally work;
First, after device connects 12V direct supply, detect 5V mu balanced circuit correct; Then detect the sensitivity of alcohol gas testing circuit with alcohol gas, adjustment of sensitivity can by the size of adjusting resistance R1 resistance; Finally debug the validity of buzzer control circuit.
Circuit components layout of the present invention, circuit structure design, its shape and size etc. of outward appearance are not all gordian techniquies of the present invention; neither application claims protection technology contents; because not affecting specific implementation process of the present invention, therefore do not illustrate one by one in the description.
Claims (1)
1. drive when intoxicated an alarm device, it comprises 12V direct supply, 5V mu balanced circuit, alcohol gas testing circuit, emitter follower and buzzer control circuit, it is characterized in that:
Described 5V mu balanced circuit is made up of voltage stabilizing diode DW, electrochemical capacitor C1 and resistance R4, one end of circuit anode VCC connecting resistance R4, the DW negative pole of another termination voltage stabilizing diode of resistance R4 and the positive pole of electrochemical capacitor C1, the positive pole of voltage stabilizing diode DW and the negative pole connection circuit ground GND of electrochemical capacitor C1;
In described alcohol gas testing circuit, the model that alcohol gas sensor IC1 selects is CM900, the vdd terminal of alcohol gas sensor IC1 connects the negative pole of voltage stabilizing diode DW, the VSS termination circuit ground GND of alcohol gas sensor IC1, the signal output part of alcohol gas sensor IC1 connects emitter follower;
Described emitter follower is made up of resistance R1, NPN transistor VT1, resistance R2, resistance R3 and electric capacity C2, the base stage of NPN transistor VT1 connects the signal output part of alcohol gas sensor IC1 by resistance R1, the emitter of NPN transistor VT1 is by resistance R3 and electric capacity C2 connection circuit ground GND;
Described buzzer control circuit is by high speed electronic switch IC2 and carry source of sound buzzer HA and form, the model that high speed electronic switch IC2 selects is TWH8778, the 1st pin connection circuit positive pole VCC of high speed electronic switch IC2,5th pin of high speed electronic switch IC2 connects the emitter of NPN transistor VT1, the 4th pin connection circuit ground GND of high speed electronic switch IC2,2nd pin of high speed electronic switch IC2 connects the positive pole carrying source of sound buzzer HA, carries the negative pole connection circuit ground GND of source of sound buzzer HA;
Described 12V DC power anode connection circuit positive pole VCC, the negative pole of 12V direct supply is connected with circuit ground GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510189201.5A CN104766442A (en) | 2015-04-21 | 2015-04-21 | Drunk driving warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510189201.5A CN104766442A (en) | 2015-04-21 | 2015-04-21 | Drunk driving warning device |
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| Publication Number | Publication Date |
|---|---|
| CN104766442A true CN104766442A (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510189201.5A Pending CN104766442A (en) | 2015-04-21 | 2015-04-21 | Drunk driving warning device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201032551Y (en) * | 2007-01-01 | 2008-03-05 | 康素成 | Language alarm for preventing drive after drinking |
| CN201272249Y (en) * | 2008-09-01 | 2009-07-15 | 侯洋浩 | Drunk driving reminder |
| CN103927844A (en) * | 2014-03-27 | 2014-07-16 | 韦翔鹏 | Fire alarm circuit |
| CN204632049U (en) * | 2015-04-21 | 2015-09-09 | 吴建堂 | To drive when intoxicated alarm device |
-
2015
- 2015-04-21 CN CN201510189201.5A patent/CN104766442A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201032551Y (en) * | 2007-01-01 | 2008-03-05 | 康素成 | Language alarm for preventing drive after drinking |
| CN201272249Y (en) * | 2008-09-01 | 2009-07-15 | 侯洋浩 | Drunk driving reminder |
| CN103927844A (en) * | 2014-03-27 | 2014-07-16 | 韦翔鹏 | Fire alarm circuit |
| CN204632049U (en) * | 2015-04-21 | 2015-09-09 | 吴建堂 | To drive when intoxicated alarm device |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150708 |
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| WD01 | Invention patent application deemed withdrawn after publication |