CN105150845A - Vehicle-mounted ethyl alcohol detection control system based on conditioning amplifying circuit - Google Patents
Vehicle-mounted ethyl alcohol detection control system based on conditioning amplifying circuit Download PDFInfo
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- CN105150845A CN105150845A CN201510548609.7A CN201510548609A CN105150845A CN 105150845 A CN105150845 A CN 105150845A CN 201510548609 A CN201510548609 A CN 201510548609A CN 105150845 A CN105150845 A CN 105150845A
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Abstract
The invention discloses a vehicle-mounted ethyl alcohol detection control system based on a conditioning amplifying circuit. The vehicle-mounted ethyl alcohol detection control system comprises an ethyl alcohol sensor, the conditioning amplifying circuit, a filter circuit, an analog-digital conversion module, a microcontroller module, an ignition control device, a display module, a button setting module, a monitoring reset module, a sound-light alarm module, a JTAG interface module, a power supply module and a voltage change circuit. According to the vehicle-mounted ethyl alcohol detection control system, as the ethanol sensor with the ultrahigh sensitivity, a single-chip microcomputer with ultra-low power consumption and an alcohol concentration automatic detecting method are adopted, a driver can be prevented from getting out of detection, and whether the driver is in drunken driving or not can be judged.
Description
Technical field
The present invention relates to a kind of alcohol concentration detecting device, particularly relate to a kind of vehicle-mounted alcohol detecting and controlling system based on conditioning amplifying circuit, belong to alcohol concentration prosecution field.
Background technology
At present, drive when intoxicated and easily traffic accident occurs, in order to reduce or stop this phenomenon, normally adopt expiration alcohol tester to carry out Site Detection to navigating mate, to determine whether navigating mate drinks.At present, on market, police alcohol tester is of a great variety, powerful, highly sensitive, but because it is not arranged on automotive interior, can only be implemented by traffic police personnel, therefore can not fundamentally stop to drive when intoxicated, event of driving when intoxicated still happens occasionally.
Drunk driving after drinking, not only endangers oneself and the security of the lives and property of household, meanwhile, also compromises public safety, received much concern over the past two years.Chinese Criminal Law, to drunken driving, according to seriousness of the case, gives relevant punishment.On road, operating motor vehicles chases competing sailing, and plot is severe, or on road drink-driving self-propelled vehicle, place's detention, and fining.There is preceding article behavior, form other crimes simultaneously, to determine a crime punishment according to the heavier regulation of punishment.However, still someone despises law, when particularly drinking a little, thinks that driving there is no big harm, can not cause serious consequence.
A kind of car-mounted device and method of measurement being applicable to a kind of alcoholic strength of monitoring driver's drunk driving situation that such as application number is " 201210375742.3 ", the method is simple, and can driver be reminded and tracing and monitoring, the better generation reducing drunk driving of people unit of enforcing the law can be helped.The present invention is a kind of vehicle-mounted alcohol test system, is placed in driving compartment in car.Its alcohol detecting device is made up of ultra-high sensitive alcohol detector, comprehensive detection district, dial plate detection zone, signal alarm district.This all vehicle-mounted detection apparatus about alcoholic strength and method of measurement, utilize ultra-high sensitive sensing equipment, alcohol content in detecting air, and be translated into voltage, the no thoroughness showing with gauge panel and indicator lamp, annunciator, not only compensate for the local of current expiration detector, detect when taking out, alleviate the burden of law enfrocement official, and allow the spontaneous detection of chaufeur, once drunk driving is reported to the police at once, considerably increase the safety of highway communication.
And for example application number is a kind of vehicle-mounted alcohol test system of " 201210521377.2 ", method and automobile, this system comprises alcohol concentration sensor, for measuring the air alcohol concentration of its installed position and changing this alcohol concentration into electric signal and send to main control module; Temperature sensor, for measuring the temperature of air in car and being converted into electric signal and sending to main control module; Rang sensor, is converted into electric signal sends to main control module for the distance measured between alcohol concentration sensor and driver head; Whether main control module, exceed standard for the electric signal determination chaufeur alcohol sent according to alcohol concentration sensor, temperature sensor and rang sensor, exports control signal to action executing module; And action executing module, for performing corresponding actions according to control signal.Effectively drunk driving be can prevent by this system and method, intellectuality and the safety of automobile improve.
Summary of the invention
Technical matters to be solved by this invention provides a kind of vehicle-mounted alcohol detecting and controlling system based on conditioning amplifying circuit for the deficiency of background technology.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
A kind of vehicle-mounted alcohol detecting and controlling system based on conditioning amplifying circuit, comprise alcohol sensor, conditioning amplifying circuit, filter circuit, analog-to-digital conversion module, micro controller module, ignition control device, display module, button setting module, monitoring and reset module, sound and light alarm module, jtag interface module, supply module and voltage conversion circuit, described alcohol sensor is successively by conditioning amplifying circuit, filter circuit, analog-to-digital conversion module connects micro controller module, described ignition control device, display module, button setting module, monitoring and reset module, sound and light alarm module, jtag interface model calling is on the corresponding port of micro controller module, described supply module connects micro controller module by voltage conversion circuit,
Described conditioning amplifying circuit comprises and comprises LNA, power splitter, the first filter, the second filter, the first amplifier, the second amplifier, synthesizer, the 3rd amplifier and the 3rd filter, wherein, the mouth of LNA connects the input end of power splitter, and the mouth of power splitter connects the input end of first and second filter respectively, the mouth of first and second filter described connects the input end of synthesizer respectively via first and second amplifier, the mouth of this synthesizer connects the input end of the 3rd filter via the 3rd amplifier;
Wherein, alcohol sensor, for Real-time Collection chaufeur ambient environment alcohol concentration parameter;
Conditioning amplifying circuit, for carrying out amplification process to the alcohol concentration parameter gathered;
Filter circuit, for carrying out filtering process by amplifying the alcohol concentration parameter after processing;
Analog-to-digital conversion module, for the alcohol concentration Parameter Switch after filtering process is become electric signal, and then transfers to micro controller module;
Micro controller module, for the electric signal of reception and setting alcohol concentration threshold value being contrasted, if exceed setting alcohol concentration threshold value, then being closed ignition control device and being given the alarm by sound and light alarm module simultaneously;
Display module, for showing chaufeur ambient environment alcohol concentration in real time;
Button setting module, for presetting alcohol concentration threshold value.
As the further preferred version of a kind of vehicle-mounted alcohol detecting and controlling system based on conditioning amplifying circuit of the present invention, described alcohol sensor adopts side heating semiconductor-type alcohol gas-sensitive element MQ3.
As the further preferred version of a kind of vehicle-mounted alcohol detecting and controlling system based on conditioning amplifying circuit of the present invention, the chip model of described analog-to-digital conversion module is MSP430FG4619IPZ.
As the further preferred version of a kind of vehicle-mounted alcohol detecting and controlling system based on conditioning amplifying circuit of the present invention, the chip model of described micro controller module is MSP430FG4619.
As the further preferred version of a kind of vehicle-mounted alcohol detecting and controlling system based on conditioning amplifying circuit of the present invention, described display module is LCD display.
The present invention adopts above technical scheme compared with prior art, has following technique effect:
1, the present invention adopts hypersensitivity alcohol sensor, super low power consuming single chip processor system, the method for automatic detection alcohol concentration, can prevent navigating mate from escaping and detect, to judge whether chaufeur drivings a car under the influence of alcohol; Can according to the alcohol content detected whether exceed standard control igniter for automobile open or close, if exceeded standard, then navigating mate cannot start automobile, has therefore fundamentally stopped the appearance of driving when intoxicated;
2, to have cost performance high in the present invention, and intelligence degree is high, working stability failure-free advantage.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
As shown in Figure 1, a kind of vehicle-mounted alcohol detecting and controlling system based on conditioning amplifying circuit, comprise alcohol sensor, conditioning amplifying circuit, filter circuit, analog-to-digital conversion module, micro controller module, ignition control device, display module, button setting module, monitoring and reset module, sound and light alarm module, jtag interface module, supply module and voltage conversion circuit, described alcohol sensor is successively by conditioning amplifying circuit, filter circuit, analog-to-digital conversion module connects micro controller module, described ignition control device, display module, button setting module, monitoring and reset module, sound and light alarm module, jtag interface model calling is on the corresponding port of micro controller module, described supply module connects micro controller module by voltage conversion circuit,
Described conditioning amplifying circuit comprises and comprises LNA, power splitter, the first filter, the second filter, the first amplifier, the second amplifier, synthesizer, the 3rd amplifier and the 3rd filter, wherein, the mouth of LNA connects the input end of power splitter, and the mouth of power splitter connects the input end of first and second filter respectively, the mouth of first and second filter described connects the input end of synthesizer respectively via first and second amplifier, the mouth of this synthesizer connects the input end of the 3rd filter via the 3rd amplifier;
Wherein, alcohol sensor, for Real-time Collection chaufeur ambient environment alcohol concentration parameter;
Conditioning amplifying circuit, for carrying out amplification process to the alcohol concentration parameter gathered;
Filter circuit, for carrying out filtering process by amplifying the alcohol concentration parameter after processing;
Analog-to-digital conversion module, for the alcohol concentration Parameter Switch after filtering process is become electric signal, and then transfers to micro controller module;
Micro controller module, for the electric signal of reception and setting alcohol concentration threshold value being contrasted, if exceed setting alcohol concentration threshold value, then being closed ignition control device and being given the alarm by sound and light alarm module simultaneously;
Display module, for showing chaufeur ambient environment alcohol concentration in real time;
Button setting module, for presetting alcohol concentration threshold value.
Wherein, described alcohol sensor adopts side heating semiconductor-type alcohol gas-sensitive element MQ3, the chip model of described analog-to-digital conversion module is MSP430FG4619IPZ, and the chip model of described micro controller module is MSP430FG4619, and described display module is LCD display.
The present invention adopts hypersensitivity alcohol sensor, super low power consuming single chip processor system, the method for automatic detection alcohol concentration, can prevent navigating mate from escaping and detect, to judge whether chaufeur drivings a car under the influence of alcohol; Can according to the alcohol content detected whether exceed standard control igniter for automobile open or close, if exceeded standard, then navigating mate cannot start automobile, has therefore fundamentally stopped the appearance of driving when intoxicated; It is high that it has cost performance, and intelligence degree is high, working stability failure-free advantage; Electric power system of the present invention, converts the voltage needed for device to by voltage conversion circuit, and actv. has saved electric energy.
This system can be placed on automobile instrument panel position, and when driver's start a car, detection controller starts, and now driving engine is in locked state, and automobile cannot start.After alcohol sensor heating, detection controller detects the gas signal that alcohol sensor detects.Become specific proportionate relationship because alcohol content and alcohol sensor detect the rear voltage signal produced, thus can carry out the judgement of alcohol content according to voltage signal.The signal detected is after amplification and filtering, digital signal is converted to by analog-to-digital conversion module, carry out process by micro controller system to this signal to judge, suppose that alcohol content does not exceed standard, LCD display curtain display current alcohol concentration, normal indicator lamp lights simultaneously, and control relay is inoperative, and automobile starts thereupon; Otherwise then carry out sound and light alarm, control relay cuts off igniting installation's power source, and navigating mate cannot start automobile, fundamentally realizes control and drives when intoxicated.After automobile starting, controller enters low power consumpting state immediately, and only have alcohol concentration detection circuit to work, once drink in navigating mate driving procedure, controller returns to normal working immediately always.
Alcohol sensor adopts side heating semiconductor-type alcohol gas-sensitive element MQ3, it has very high sensitivity and good selectivity to alcohol vapour, and fast speed response recovers, long-term life-span and failure-free stability, investigative range is 10 ~ 1000ppm, is particularly useful for the detection of drunken driving personnel.
The high-accuracy amplifier MAX4238 that signal condition amplifying circuit prime adopts Maxim to produce realizes, and it has the bias current of 1pA, the bias voltage of 2 μ V, ultra-low temperature drift, good performance.The OP07C operation amplifier that rear class amplifies employing conventional realizes, and the switching capacity type pin-programmable integrated filter MAX266 that filtering chip adopts Maxim to produce realizes, and has the performance more excellent than common RC filter circuit.
The ADC that A/D changes and adopts MSP430FG4619IPZ carry 12, maximum rate is 200KSPS, its voltage reference can be chosen as internal reference or outside reference, save outside ADC chip, enormously simplify the design of hardware, the requirement of precision can be met simultaneously.
Those skilled in the art of the present technique are understandable that, unless otherwise defined, all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.Above embodiments of the present invention are explained in detail, but the present invention is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, makes a variety of changes under can also or else departing from the prerequisite of present inventive concept.
Claims (5)
1. the vehicle-mounted alcohol detecting and controlling system based on conditioning amplifying circuit, it is characterized in that: comprise alcohol sensor, conditioning amplifying circuit, filter circuit, analog-to-digital conversion module, micro controller module, ignition control device, display module, button setting module, monitoring and reset module, sound and light alarm module, jtag interface module, supply module and voltage conversion circuit, described alcohol sensor is successively by conditioning amplifying circuit, filter circuit, analog-to-digital conversion module connects micro controller module, described ignition control device, display module, button setting module, monitoring and reset module, sound and light alarm module, jtag interface model calling is on the corresponding port of micro controller module, described supply module connects micro controller module by voltage conversion circuit,
Described conditioning amplifying circuit comprises and comprises LNA, power splitter, the first filter, the second filter, the first amplifier, the second amplifier, synthesizer, the 3rd amplifier and the 3rd filter, wherein, the mouth of LNA connects the input end of power splitter, and the mouth of power splitter connects the input end of first and second filter respectively, the mouth of first and second filter described connects the input end of synthesizer respectively via first and second amplifier, the mouth of this synthesizer connects the input end of the 3rd filter via the 3rd amplifier;
Wherein, alcohol sensor, for Real-time Collection chaufeur ambient environment alcohol concentration parameter;
Conditioning amplifying circuit, for carrying out amplification process to the alcohol concentration parameter gathered;
Filter circuit, for carrying out filtering process by amplifying the alcohol concentration parameter after processing;
Analog-to-digital conversion module, for the alcohol concentration Parameter Switch after filtering process is become electric signal, and then transfers to micro controller module;
Micro controller module, for the electric signal of reception and setting alcohol concentration threshold value being contrasted, if exceed setting alcohol concentration threshold value, then being closed ignition control device and being given the alarm by sound and light alarm module simultaneously;
Display module, for showing chaufeur ambient environment alcohol concentration in real time;
Button setting module, for presetting alcohol concentration threshold value.
2. a kind of vehicle-mounted alcohol detecting and controlling system based on conditioning amplifying circuit according to claim 1, is characterized in that: described alcohol sensor adopts side heating semiconductor-type alcohol gas-sensitive element MQ3.
3. a kind of vehicle-mounted alcohol detecting and controlling system based on conditioning amplifying circuit according to claim 1, is characterized in that: the chip model of described analog-to-digital conversion module is MSP430FG4619IPZ.
4. a kind of vehicle-mounted alcohol detecting and controlling system based on conditioning amplifying circuit according to claim 1, is characterized in that: the chip model of described micro controller module is MSP430FG4619.
5. a kind of vehicle-mounted alcohol detecting and controlling system based on conditioning amplifying circuit according to claim 1, is characterized in that: described display module is LCD display.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510548609.7A CN105150845A (en) | 2015-08-31 | 2015-08-31 | Vehicle-mounted ethyl alcohol detection control system based on conditioning amplifying circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510548609.7A CN105150845A (en) | 2015-08-31 | 2015-08-31 | Vehicle-mounted ethyl alcohol detection control system based on conditioning amplifying circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105973968A (en) * | 2016-04-28 | 2016-09-28 | 无锡昊瑜节能环保设备有限公司 | Low-cost dissolved oxygen sensor based on amplifying circuit |
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| CN101364800A (en) * | 2008-09-26 | 2009-02-11 | 海芯科技(厦门)有限公司 | Low noise switch capacitor circuit having embedded amplifier |
| CN201532373U (en) * | 2009-10-28 | 2010-07-21 | 苏州新海宜通信科技股份有限公司 | Portable alcohol concentration detection and alarming system |
| US20120245763A1 (en) * | 2011-03-24 | 2012-09-27 | Toyota Jidosha Kabushiki Kaisha | Drunk driving prevention system and external server used for the same |
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- 2015-08-31 CN CN201510548609.7A patent/CN105150845A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| CN101364800A (en) * | 2008-09-26 | 2009-02-11 | 海芯科技(厦门)有限公司 | Low noise switch capacitor circuit having embedded amplifier |
| CN201532373U (en) * | 2009-10-28 | 2010-07-21 | 苏州新海宜通信科技股份有限公司 | Portable alcohol concentration detection and alarming system |
| US20120245763A1 (en) * | 2011-03-24 | 2012-09-27 | Toyota Jidosha Kabushiki Kaisha | Drunk driving prevention system and external server used for the same |
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| CN105973968A (en) * | 2016-04-28 | 2016-09-28 | 无锡昊瑜节能环保设备有限公司 | Low-cost dissolved oxygen sensor based on amplifying circuit |
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Application publication date: 20151216 |