CN101041332A - Method and device for detecting and alarming of noxious gas inside automobile - Google Patents
Method and device for detecting and alarming of noxious gas inside automobile Download PDFInfo
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- CN101041332A CN101041332A CN 200610065684 CN200610065684A CN101041332A CN 101041332 A CN101041332 A CN 101041332A CN 200610065684 CN200610065684 CN 200610065684 CN 200610065684 A CN200610065684 A CN 200610065684A CN 101041332 A CN101041332 A CN 101041332A
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Abstract
The invention relates to an inspecting and alarming device for poisonous gas in automobile, comprising gate circuit of delay switch for inspecting if the time when automobile is in idle speed and motion state achieves the setting value. When the time achieves the setting value the signal is emitted and the inspecting circuit is opened. CO sensor is set in the inspecting circuit to collect the concentration signal of CO and transform the signal into voltage signal, which is amplified subsequently. When amplified voltage signal achieves the setting value alarm is started while three signals are outputted. One signal output is used to control car window to open; another signal output is used to control engine to close and the residual signal output is used to open anti-theft alarming device. By adopting the method of opening inspection circuit automatically, the device prolong the using time of sensor greatly while the problem that in the original technology only alarm can be started and the source of poisonous gas can not be cut is conquered. The safety is increased. It is provided with simple structure, strong practicability. It is widely applied in various automobiles.
Description
Technical field
The present invention relates to a kind of noxious gas warning device, particularly relate to a kind of alarm method and device that detects noxious gas inside automobile.
Background technology
In recent years; on TV, medium such as newspaper and network are common causes poisoning even dead report relevant for turning on the aircondition for a long time because of sleep or other reason in the airtight compartment; incident is mainly in the summer, two seasons of winter; mainly be that car owner or passenger are when opening air-conditioning (heating or cooling) rest in car; consequent carbonic oxide can't be discharged in this narrow and small and relative sealed space in the compartment; thereby cause carbon monoxide hazard; because the poisoner can lose consciousness, thereby can cause death usually.China all take place every year a large amount of in car carbon monoxide hazard cause dead accident.
According to test, when automobile normally moved, engine speed generally changeed at per minute 1500-3000, did not generally have excessive carbonic oxide in the waste gas of being discharged this moment.But when the automobile stagnation of movement and when opening air-conditioning, driving engine is in the idling idling conditions, and tend to produce the waste gas that contains a large amount of carbonic oxides because burning is insufficient this moment; Be in operation simultaneously, throttle is excessive, when rotating speed surpasses per minute 3000 commentaries on classics, oil has surpassed normal 1: 12.5 with the ratio of air, the very high waste gas of carbon-monoxide concentration also can appear containing in the many little airs of oil, and the inside and outside air of car this moment is difficult to convection current because of closing vehicle window, owing to the automobile stagnation of movement, air can not produce convection current by conditioning unit simultaneously.The carbonic oxide that automotive engine is discharged accumulates in the car gradually, adds that the occupant breathes oxygen consumption, and the time one is long, will lose consciousness because of the hypertoxic gas that sucks this colorless and odorless, and it is dead to poison unconsciously.
Air conditioning for automobiles Cheng Xia, two season of winter killer attract great attention, for preventing carbon monoxide hazard, the doctor appeals to open air-conditioning for a long time under the automobile suspended state, even also will often turn down glass port when running car, makes the car inner air and outer air produce convection current.Yet driver in the compartment in heat or severe winter or passenger often ignore this point, or in order to scheme the fast of a period of time this are turned a deaf ear to, and have caused tragedy to take place again and again.
The toxicity of carbonic oxide mainly is hematological system and the nervous system that acts on human body, and the people contacts the carbonic oxide of low concentration for a long time, can cause dizziness, headache; When concentration reached 0.1% in the air, the people will occur that cherry-red appears in areflexia, gatism, facial color flush, lip, symptoms such as purple plague purpura appear in skin; When concentration reaches 0.32%, stopped therein 2～3 hours, will cause death.
Existing carbonic oxide warning device (application number: 89220885.6) by sensor, form, and begins to report to the police when carbon-monoxide concentration surpasses setting value when sensor detects by warning circuit and warning.Carbonic oxide warning device (the patent No.: CN87209935U) of delaying time in addition, a kind of sensor, power supply, time-delay comparator circuit, memory circuit and warning of comprising is provided, the sensor of this warning device is with the signal input warning circuit that receives, when surpassing setting value, carbon-monoxide concentration begins to report to the police, this warning device also provides a kind of delay function to avoid interference, promptly have only carbon-monoxide concentration to surpass setting value and reach certain hour and just report to the police, the flase alarm of having avoided having once in a while flue dust to pass through etc.
Carbon monoxide transducer commonly used all adopts the electrochemistry principle of work, promptly add the chemical substance of electrolysis the inside behind the power supply, the chemical substance of this electrolysis is very responsive to carbonic oxide, can convert the CO gas of variable concentrations in the air to electric signal, offers the gas detection warning device.This sensor power consumption is little, volume is little, measurement is accurate, be quick on the draw, the range of linearity is wide, and has advantages such as strong interference immunity, good airproof performance, reliable operation, thereby is widely adopted.
Above-mentioned carbonic oxide warning device is all imported warning circuit with the signal of sensor acquisition, promptly send sound and light alarm after surpassing concentration, though certain warning effect is arranged, yet user vehicle is remained in some problems: situation did not kill engine in 1, warning had at car, though caused having alarm sound but not cut off the source of poison gas, and this moment usually the passenger poisoned usually and lose consciousness or go into a coma, be difficult to alarm sound is responded.2, warning fails to open vehicle window, and owing to air does not still circulate, thereby carbon-monoxide concentration is still very high in the car, can continue to jeopardize occupant's health.3, the period of service of sensor is shorter because sensor need open always, thereby in the life-span of sensor, (be generally 900 hours) period of service can be shorter, generally about half a year,, therefore obviously increase cost because sensor is more valuable.Gasoline combustion is abundant because automobile is in the cruising process, substantially do not produce carbonic oxide, and, therefore almost do not have this moment carbonic oxide to produce in the car at this moment because the air that travels of automobile can also produce convection current by conditioning unit, need not open open alarm circuit.4, warning circuit generally adopts the 9V battery, needs the frequent battery of changing, and causes trouble to the user.The Zhou Weizhong in Guangdong Province is the carbonic oxide warning device (patent No.: CN2707566Y) in the car of invention in 2003, the function of opening vehicle window and killing engine is provided, but still do not solve problem such as weak point and frequent replacing battery of sensor period of service, thereby cost is considerably high, and need frequent battery and the sensor changed, be of limited application.
Summary of the invention
The objective of the invention is to overcome the shortcoming of existing carbonic oxide warning device, thereby a kind of 12V direct supply that uses automobile is provided, avoided frequently opening the problem that the warning device casing is changed battery; And can be according to the carbonic oxide warning device of automobile operating state self-opening warning, only in automobile stagnation of movement and normal working of engine, be that automobile is in driving engine ability open detection circuit when idling dallies and surpass certain hour, so just avoided opening under provisional parking (wait traffic lights, taxicar passenger etc.) the up and down situation detection noxious gas inside automobile of testing circuit, the method of reporting to the police simultaneously, and provide a kind of easy to use, what volume was little can detect noxious gas inside automobile, the device of reporting to the police simultaneously.
The object of the present invention is achieved like this:
A kind of device that is used for the detection and the warning of noxious gas inside automobile provided by the invention as shown in Figure 1, comprises carbon monoxide transducer 2, power supply 5, loud speaker 12; It is characterized in that: also comprise a time-delay switch gate circuit 1, described time-delay switch gate circuit 1 is used to detect automobile and whether is in the idling idling conditions, and whether the time of idling idling conditions reaches schedule time 5-30 minute, when reaching the schedule time, send the signal of start detection circuit 3, and open detection circuit 3; Power supply 5 is given time-delay switch gate circuit 1 and testing circuit 3 power supplies; With
One testing circuit 3, described carbon monoxide transducer 2 partly is electrically connected with the signal source of described testing circuit 3; Described testing circuit 3 comprises light-emitting diode 11 and loud speaker 12, the signal input testing circuit 3 of the carbon monoxide gas concentration that carbon monoxide transducer 2 is gathered, after aerotron by testing circuit 3 converts voltage signal to, amplify through computing, and compare with the carbon-monoxide concentration alarm threshold value, when the voltage signal after amplifying reached threshold value, light-emitting diode 11 began flicker, loud speaker 12 begins to pipe, simultaneously described testing circuit 3 outputs three road signals; And
One output control circuit 4, three road signals of described output control circuit 4 receiving test circuits 3 outputs, pass through 3 electric switches of output control circuit 4 respectively, one road signal output is used to control vehicle window 8 and opens, one road signal output is used to control driving engine 9 closes, and one road signal output is used to open antitheft alarm system 10.
In above-mentioned technical scheme, described time-delay switch gate circuit 1 for buy on the market with door, NAND gate, the perhaps gate circuit of forming by general-duty and door, NAND gate, for example: 74F3037,74F3038,74F3137,74F379A etc.
In above-mentioned technical scheme, described testing circuit 3 is set to 100ppmm for carbonic oxide warning concentration, and its integrated chip model is 74F3037.
In above-mentioned technical scheme, described power supply 5 is general 12V direct supplys in the car.
A kind of method that is used for the detection and the warning of noxious gas inside automobile provided by the invention comprises:
1. when at first setting the automotive engine normal operation, export a high level signal or low level signal as normal working of engine signal 7; When speed is zero when the automobile stagnation of movement, export a high level signal or low level signal as automobile stagnation of movement signal 6; The normal operation signal of exporting during normal working of engine 7, the automobile stagnation of movement signal of exporting during with the automobile stagnation of movement 6 must be high level signal simultaneously or be low level signal simultaneously;
2. by the interior time-delay switch gate circuit of installing of automobile, detect automobile and whether be in the idling idling conditions, and the time value that preestablishes an idling idling conditions is between 5-30 minute, promptly send the signal that arrives idling race time value, when auto idle speed idle running reaches setting value, send the signal of open detection circuit 3;
3. the open detection circuit 3, this moment, carbon monoxide transducer 2 was started working, after converting voltage signal to, amplifies the carbon monoxide gas concentration signal that carbon monoxide transducer 2 is gathered, the carbon monoxide gas concentration signal that collects is strong more, voltage signal after the amplification is high more, in amplification voltage signal constantly and the carbon-monoxide concentration alarm threshold value compare, when the voltage signal after amplifying reaches alarm threshold value, light-emitting diode 11 begins flicker, loud speaker 12 begins to pipe, export three road signals simultaneously and promptly open vehicle window signal 8, cut-off command 9, open burglar alarm signal 10, be respectively applied for and open vehicle window, kill engine and open the anti-theft alarm signal.
Preceence of the present invention:
Because in traditional carbonic oxide warning device, because sensor need be opened always, thereby in the life-span of sensor, (be generally 900 hours) period of service can be shorter, generally about half a year, because sensor is more valuable, therefore often changing obviously to increase cost, and it is inconvenient, the warning device that the present invention's employing provides can be automatically according to travel conditions opening and closing testing circuit, in automobile normal running and parking kill engine the back all can the SELF CL testing circuit, only under the situation behind auto idle speed idle running (automobile stagnation of movement and engine running) certain hour, open, so just avoided provisional parking (to wait traffic lights, taxicar is passenger etc. up and down) open testing circuit under the situation, owing to do not have power supply on the sensor behind the shutdown detecting circuit, do not influence sensor life-time, thereby increased life-span of sensor greatly, and generally can reach more than 3 years, reach as high as 8-10.
In traditional warning circuit, because the needs of chip operation, the general universal battery that adopts 9V,, thereby be under the normally open (in the running car, automotive engine close back etc.) all unnecessary warning circuit of opening because in most of the cases owing to do not adopt automatic switching circuit, therefore traditional warning circuit has not only increased consumption of current, wasted the energy, and need frequently take annunciator apart and change battery, brought inconvenience to the user; And warning device provided by the invention uses general 12V direct supply in the automobile, so avoided frequently opening the problem that the warning device casing is changed battery, and the present invention can judge whether to open warning circuit according to actual conditions automatically, only after being in idling idle running certain hour, opens by automobile, consumption of current is minimum, generally only be ten milliwatt magnitudes, littler about ten thousand times than automobile lamp (tens of watts even hectowatt approximately) consumption of current, thereby do not influence automobile electrical fully, and it is easy to use, volume is little, can be widely used in all kinds of automobiles.
Description of drawings
Fig. 1 is the device composition scheme drawing that is used for the detection and the warning of noxious gas inside automobile of the present invention
Fig. 2 be the present invention detect and the device of reporting to the police in time-delay switch gate structure scheme drawing
Fig. 3 be the present invention detect and the device of reporting to the police in testing circuit and output control circuit structural representation
Fig. 4 be the present invention detect and the device of reporting to the police in the another kind of structural representation of time-delay switch gate circuit
The drawing explanation:
1-time-delay switch gate circuit; The 2-carbon monoxide transducer; The 3-testing circuit;
The 4-output control circuit; The 5-power supply; 6-automobile stagnation of movement signal;
7-normal working of engine signal; 8-opens the vehicle window signal;
The 9-cut-off command; 10-opens the burglar alarm signal;
11-light-emitting diode (LED); The 12-loud speaker;
The specific embodiment
Below in conjunction with drawings and Examples the present invention is described in detail:
Present embodiment is made a device that is used for the detection and the warning of noxious gas inside automobile of the present invention according to Fig. 1, and wherein time-delay switch gate circuit 1 is selected for use shown in Figure 2ly, and wherein resistance is 10M Ω, and electric capacity is 60 μ F, and then delay time is 10 minutes.
One time-delay switch gate circuit 1 is used to detect automobile and whether is in the idling idling conditions, and the time of idling idling conditions whether reach schedule time 5-30 minute, when reaching the schedule time, send the signal of start detection circuit 3, and open detection circuit 3; Power supply 5 is given time-delay switch gate circuit 1 and testing circuit 3 power supplies; With
One testing circuit 3 as shown in Figure 3, described carbon monoxide transducer 2 is as the signal source of testing circuit 3, promptly the mouth of carbon monoxide transducer 2 is electrically connected with the input end of testing circuit 3; Described testing circuit 3 comprises light-emitting diode 11 and loud speaker 12, and promptly the mouth of testing circuit 3 is electrically connected with light-emitting diode 11 and loud speaker 12 by resistance respectively, and wherein the 2 warning concentration of the carbon monoxide transducer in the testing circuit 3 are set to 100ppmm; Testing circuit 3 is that model is the integrated chip of 74F3037, after this integrated chip is opened by time-delay switch gate circuit 1, the faint current signal by carbon-monoxide concentration conversion that carbon monoxide transducer 2 will receive this moment amplifies by the operational amplifier A D711 among Fig. 3 (U2) and converts voltage signal to, after process operational amplifier A D711 (U3) amplifies, constantly with predefined alarm threshold value voltage 4V (by, variable resistance R3 among Fig. 3 carries out regulating voltage to 4V, this moment, corresponding carbonic oxide warning concentration was 100ppmm) compare, when the voltage after amplifying surpasses the 4V threshold value, amplifier U3 exports one road high level, make light-emitting diode 11 begin flicker (by the R8 dividing potential drop), loud speaker 12 begin to pipe (by the R9 dividing potential drop).Also export three road high level signals simultaneously to output control circuit 4.Output control circuit 4 comprises 3 tunnel output high level signal and its 3 electric switches that are electrically connected respectively, by opening of high level signal control electric switch, receive three road signals of testing circuit 3 outputs when output control circuit 4 after, pass through 3 electric switches of output control circuit 4 respectively, one road signal output is used to control vehicle window 8 and opens, even what connect vehicle window often opens electrical switch closes, open after making the car window switch energising, one road signal output is used to control driving engine 9 and closes, even the normally closed electric switch that connects on the driving engine electric plug disconnects, make on the electric plug and stop because of outage, thereby closed driving engine, one road signal output is used to open antitheft alarm system 10, though connect antitheft alarm system often open electrical switch closes, make antitheft alarm system begin to report to the police because of energising.
As shown in Figure 1, when the automobile stagnation of movement (when speed is zero), automobile stagnation of movement signal 6 is a high level signal; When normal working of engine, normal working of engine signal 7 is a high level signal; When time-delay switch gate circuit 1 detects automobile stagnation of movement signal 6, normal working of engine signal 7 picks up counting when being high level signal, when reaching 20 minutes, timing sends unblanking testing circuit 3, this moment, carbon monoxide transducer 2 was started working, amplify after converting the signal of gathering (carbon monoxide gas concentration) to voltage signal, the signal that collects (carbon monoxide gas concentration) is strong more, voltage signal after the amplification is high more, in amplification voltage signal constantly and the carbonic oxide alarm threshold value compare, when the voltage signal after amplifying reaches alarm threshold value, LED 11 begins flicker, loud speaker 12 begins to pipe, export three road signals simultaneously and promptly open vehicle window signal 8, cut-off command 9, open burglar alarm signal 10, be respectively applied for and open vehicle window, kill engine and open the anti-theft alarm signal.
Time-delay switch gate circuit 1, testing circuit 3 and LED 11, loud speaker 12 and output control signal all use power supply 5 driving of powering.
The device of embodiment 1 is installed in the automobile, the method that the device of Application Example 1 carries out the detection of noxious gas in the car and reports to the police simultaneously,
1. when at first setting the automotive engine normal operation, export a high level signal as normal working of engine signal 7; When speed is zero when the automobile stagnation of movement, export a high level signal as automobile stagnation of movement signal 6; The normal operation signal of exporting during normal working of engine 7, the automobile stagnation of movement signal of exporting during with the automobile stagnation of movement 6, they are high level signal simultaneously;
2. by the interior time-delay switch gate circuit of installing of automobile, detect automobile and whether be in the idling idling conditions, and the time value that preestablishes an idling idling conditions is between 10 minutes, promptly send the signal that arrives idling race time value, when auto idle speed idle running reaches setting value, send the signal of open detection circuit 3;
3. the open detection circuit 3, this moment, carbon monoxide transducer 2 was started working, after converting voltage signal to, amplifies the carbon monoxide gas concentration signal that carbon monoxide transducer 2 is gathered, the carbon monoxide gas concentration signal that collects is strong more, voltage signal after the amplification is high more, in amplification voltage signal constantly and the carbon-monoxide concentration alarm threshold value compare, when the voltage signal after amplifying reaches alarm threshold value, light-emitting diode 11 begins flicker, loud speaker 12 begins to pipe, simultaneously described testing circuit 3 outputs three road signals; A road of output control circuit 4 is output as to be opened vehicle window signal 8 and is used to control vehicle window and opens, the mouth that is the output signal 8 of output control circuit 4 is connected by the electric switch of lead with the control car window switch at automobile inside door grip or engage a gear place, opens electric switch by output signal this vehicle window is opened; The signal output of one tunnel cut-off command 9 is used for control and kills engine, and the electric switch below connection automotive engine key disconnects electric switch, thereby kills engine; One tunnel output of opening burglar alarm signal 10 is used to open antitheft alarm system, and the electric switch of the antitheft alarm system by being connected to the automatic clutch place closes this electric switch, thereby opens antitheft alarm system.
Present embodiment is selected time-delay switch gate circuit 1 shown in Figure 4 for use, and wherein resistance is 30M Ω, and electric capacity is 30 μ F, and then delay time is 15 minutes; Sensor 2 is selected commercially available carbon monoxide transducer (model KGA5) for use; Output control circuit 4 is three tunnel low level models, and voltage is-5V; Testing circuit 3 as shown in Figure 3, wherein carbonic oxide warning concentration is set to 150ppmm; Power supply 5 is a 12V direct supply in the automobile; LED 11 is commercially available red light semiconductor light-emitting diode; Loud speaker 12 is commercially available loud speaker.
When automobile stagnation of movement and normal working of engine (idling idle running) surpass 15 minutes, time-delay switch gate circuit 1 sends signal and opens testing circuit 3, this moment, sensor 2 and testing circuit 3 were started working, if the LED 11 of circuit began flicker when carbon monoxide gas concentration surpassed 150ppmm in the car, loud speaker 12 begins to pipe, export three road control signals simultaneously, open vehicle window respectively, kill engine and open burglar alarm.
A time-delay switch gate circuit 1 is electrically connected with testing circuit 3, testing circuit 3 as shown in Figure 3, the mouth of testing circuit 3 is exported three road signals, be used to open 3 switches of output control circuit 4 the insides, be respectively applied for the automatic window of opening automobile, kill engine and open antitheft alarm system, signal source input end on the testing circuit 3 also is electrically connected with a carbon monoxide transducer 2, and its mouth is connected with loud speaker 12 with warning indicator lamp LED 11; Power supply 5 is a 12V direct supply in the automobile, gives time-delay switch gate circuit 1 and testing circuit 3 power supplies; Described time-delay switch gate circuit 1 is used to detect the time whether automobile be in idling idling conditions and idling idling conditions and whether reaches 10 minutes, when reaching 10 minutes, send signal, open detection circuit 3, testing circuit 3 comprises the signal of the carbon monoxide gas concentration that sensor 2 is gathered, after the aerotron of testing circuit 3 the insides converts voltage signal to, amplify through computing, and compare with the carbonic oxide alarm threshold value of setting (100ppmm), when the voltage signal after amplifying reaches alarm threshold value, LED 11 begins flicker, loud speaker 12 begins to pipe, simultaneously described testing circuit 3 outputs three road signals; One tunnel output of output control circuit 4 is used to control vehicle window 8 and opens, the mouth that is the output signal 8 of output control circuit 4 is connected by the electric switch of lead with the control car window switch at automobile inside door grip or engage a gear place, opens electric switch by output signal this vehicle window is opened; One road signal output is used to control driving engine 9 closes, and the electric switch below connection automotive engine key disconnects electric switch, thereby kills engine; One road signal output is used to open antitheft alarm system 10, and the electric switch of the antitheft alarm system by being connected to the automatic clutch place closes this electric switch, thereby opens antitheft alarm system.
Claims (6)
1. a device that is used for the detection and the warning of noxious gas inside automobile comprises carbon monoxide transducer (2), power supply (5), loud speaker (12); It is characterized in that: also comprise a time-delay switch gate circuit (1), a testing circuit (3) and an output control circuit (4); Described time-delay switch gate circuit (1) is used to detect automobile and whether is in the idling idling conditions, and whether the time of idling idling conditions reaches predetermined 5-30 minute time value, when reaching the schedule time, send the signal of start detection circuit (3), and open detection circuit (3);
3 road mouths of described testing circuit (3) are electrically connected described carbon monoxide transducer (2), light-emitting diode (11) and loud speaker (12) respectively; This testing circuit (3) comprises the signal of the carbon monoxide gas concentration that carbon monoxide transducer (2) is gathered, after aerotron by testing circuit (3) converts voltage signal to, amplify through computing, and compare with the carbon-monoxide concentration alarm threshold value, when the voltage signal after amplifying reaches threshold value, light-emitting diode (11) begins flicker, and loud speaker (12) begins to pipe, and testing circuit (3) is also exported three road signals simultaneously;
Three road signals of described output control circuit (4) receiving test circuit (3) output, pass through 3 electric switches of output control circuit (4) respectively, one road signal output is used to control vehicle window (8) and opens, one road signal output is used to control driving engine (9) closes, and one road signal output is used to open antitheft alarm system (10); Power supply (5) is given time-delay switch gate circuit (1) and testing circuit (3) power supply.
2. according to the described device that is used for the detection and the warning of noxious gas inside automobile of claim 1, it is characterized in that: described time-delay switch gate circuit (1) for buy on the market with door, NAND gate, the perhaps gate circuit of forming by general-duty and door, NAND gate.
3. according to the described device that is used for the detection and the warning of noxious gas inside automobile of claim 1, it is characterized in that: described power supply (5) is a general 12V direct supply in the car.
4. according to the described device that is used for the detection and the warning of noxious gas inside automobile of claim 1, it is characterized in that: it is the integrated chip of 74F3037 that described testing circuit (3) adopts model.
5. according to the described device that is used for the detection and the warning of noxious gas inside automobile of claim 1, it is characterized in that: the carbonic oxide warning concentration of described testing circuit (3) is set to 100ppmm.
6. method that is used for the detection and the warning of noxious gas inside automobile comprises:
(1). when at first setting the automotive engine normal operation, export a high level signal or low level signal as normal working of engine signal (7); When speed is zero when the automobile stagnation of movement, export a high level signal or low level signal as automobile stagnation of movement signal (6); The normal operation signal of exporting during normal working of engine (7), the automobile stagnation of movement signal of exporting during with the automobile stagnation of movement (6) must be high level signal simultaneously or be low level signal simultaneously;
(2). by the time-delay switch gate circuit of installing in the automobile, detect automobile and whether be in the idling idling conditions, and the time value that preestablishes an idling idling conditions is between 5-30 minute, promptly send the signal that arrives idling race time value, when auto idle speed idle running reaches setting value, send the signal of open detection circuit (3);
(3). open detection circuit (3), carbon monoxide transducer this moment (2) is started working, after converting voltage signal to, amplifies the carbon monoxide gas concentration signal that carbon monoxide transducer (2) is gathered, in amplification voltage signal constantly and the carbon-monoxide concentration alarm threshold value compare, when the voltage signal after amplifying reaches alarm threshold value, light-emitting diode (11) begins flicker, loud speaker (12) begins to pipe, export three road signals (8), (9), (10) simultaneously, be respectively applied for and open vehicle window, kill engine and open the anti-theft alarm signal.
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| CN 200610065684 CN101041332A (en) | 2006-03-21 | 2006-03-21 | Method and device for detecting and alarming of noxious gas inside automobile |
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| CN102602349A (en) * | 2012-03-29 | 2012-07-25 | 吉林大学 | Carbon monoxide poisoning preventive control system for idling automobile |
| CN102662103A (en) * | 2012-05-11 | 2012-09-12 | 成都安可信电子股份有限公司 | Method for preventing false alarms of alarm device |
| CN102778544A (en) * | 2012-08-15 | 2012-11-14 | 李良杰 | Device for carrying out early warning on harmful gases in vehicles |
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| CN106568898A (en) * | 2016-10-26 | 2017-04-19 | 莫逢文 | Alarm control device used for preventing in-vehicle carbon monoxide poisoning, and application method thereof |
| CN111220778A (en) * | 2020-03-02 | 2020-06-02 | 北京市华云分析仪器研究所有限公司 | Signal processing circuit of carbon monoxide analyzer |
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| CN103021116A (en) * | 2011-09-20 | 2013-04-03 | 海信（山东）空调有限公司 | Fire alarm sensing circuit applied to air conditioner and method of fire alarm sensing circuit |
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| CN102602349A (en) * | 2012-03-29 | 2012-07-25 | 吉林大学 | Carbon monoxide poisoning preventive control system for idling automobile |
| CN102662103A (en) * | 2012-05-11 | 2012-09-12 | 成都安可信电子股份有限公司 | Method for preventing false alarms of alarm device |
| CN102778544A (en) * | 2012-08-15 | 2012-11-14 | 李良杰 | Device for carrying out early warning on harmful gases in vehicles |
| CN103729979A (en) * | 2012-10-16 | 2014-04-16 | 胡楚阳 | Switch warning indicator |
| CN103481822A (en) * | 2013-09-18 | 2014-01-01 | 浙江吉利控股集团有限公司 | Poisoning prevention control system against poisonous gas in vehicle and control method thereof |
| CN103481822B (en) * | 2013-09-18 | 2017-02-15 | 浙江吉利控股集团有限公司 | Poisoning prevention control system against poisonous gas in vehicle and control method thereof |
| CN103713115A (en) * | 2013-12-20 | 2014-04-09 | 重庆五洲龙新能源汽车有限公司 | Method and device for safely detecting get-on oil on electric car |
| CN105089419A (en) * | 2015-07-10 | 2015-11-25 | 北京光华纺织集团有限公司 | Intelligent vehicle window |
| CN105333571A (en) * | 2015-11-09 | 2016-02-17 | 广东美的制冷设备有限公司 | Air conditioner and humidity detection method and device used for air conditioner |
| CN106564445A (en) * | 2016-10-20 | 2017-04-19 | 深圳市三合信义科技发展有限公司 | Alarming method and device for automobile and automobile |
| CN106564445B (en) * | 2016-10-20 | 2019-03-26 | 深圳市三合信义科技发展有限公司 | A kind of alarming method of automobile, device and automobile |
| CN106568898A (en) * | 2016-10-26 | 2017-04-19 | 莫逢文 | Alarm control device used for preventing in-vehicle carbon monoxide poisoning, and application method thereof |
| CN111220778A (en) * | 2020-03-02 | 2020-06-02 | 北京市华云分析仪器研究所有限公司 | Signal processing circuit of carbon monoxide analyzer |
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