CN106427858B - Automobile anti-suffocation security system - Google Patents
Automobile anti-suffocation security system Download PDFInfo
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- CN106427858B CN106427858B CN201610942976.XA CN201610942976A CN106427858B CN 106427858 B CN106427858 B CN 106427858B CN 201610942976 A CN201610942976 A CN 201610942976A CN 106427858 B CN106427858 B CN 106427858B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
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Abstract
The invention discloses a kind of automobile anti-suffocation security systems, belong to automobile safety system technical field.Technical scheme of the present invention main points are：Automobile anti-suffocation security system, including car body, vehicle window, interior ceiling, interior chassis and interior control panel, it is respectively equipped with the first pyroelectric infrared sensor and the second pyroelectric infrared sensor on the car body inner wall of front and back vehicle window bottom, carbon monoxide transducer is equipped in the middle part of interior ceiling, interior control panel is equipped with reset key, and control circuit is housed through circuit board on interior chassis.Structure of the invention novel and unique, advantages of simple, securely and reliably, it is easy to operate, can in automatic detection vehicle whether someone, and at the same time the interior carbonomonoxide concentration of detection, in the car someone and carbonomonoxide concentration it is exceeded in the case of the power windows of automobile can be made to land automatically.Using effect is good, is the innovation on automotive safety.
Description
Technical field
The invention belongs to automobile safety system technical fields, and in particular to a kind of automobile anti-suffocation security system.
Background technology
Automobile is that today's society is the most frequently used, most common, most convenient trip tool, while to people and society caused by hinder
Evil is also maximum in all vehicles, and as car ownership rapidly increases, transportation system is increasingly sophisticated, then
In addition regional destabilizing factor and international terrorist activity aggravation, carry automotive safety in terms of national security, socio-economic security
Higher actual requirement is gone out.In recent years, China is in the perception of driving bad border, dangerous driving behavior identification and monitoring abnormal state
It is had made great progress in terms of the research and development of the key technologies such as early warning, has formd part core technology, had accumulated a large amount of achievements
And data, the research of advanced safety vehicle technology also become the core technology of automotive safety technology.Automobile works in engine
When, if fuel oil incomplete combustion, it just will produce the carbon monoxide of high concentration.Automobile in motion, since air passes through air-conditioning
Equipment generates convection current, so the concentration of interior carbon monoxide is very low, but when car stagnation of movement and heating（Cold air）Continue to open, vehicle
Window closes again when, the carbon monoxide of engine discharge will be built up and concentration increases.It is slept so open air-conditioning in automobile
Feel just at prodigious security risk.Therefore, the improvement and innovation of automobile this respect are problems to be solved.
Invention content
To overcome defect of the existing technology the present invention provides a kind of automobile anti-suffocation security system, can effectively keep away
Exempt to open the generation of air-conditioning sleep apneic events in automobile bodies.
The present invention adopts the following technical scheme that solve above-mentioned technical problem, automobile anti-suffocation security system, including car body,
Vehicle window, interior ceiling, interior chassis and interior control panel, it is characterised in that：On the car body inner wall of front and back vehicle window bottom respectively
Carbon monoxide is equipped with equipped with the first pyroelectric infrared sensor and the second pyroelectric infrared sensor, in the middle part of interior ceiling to sense
Device, interior control panel are equipped with reset key, and control circuit is housed through circuit board on interior chassis；
The control circuit includes the first rpyroelectric infrared signal amplification circuit, the second rpyroelectric infrared signal amplification electricity
Road, carbon monoxide transducer circuit, reset circuit, power circuit, clock circuit, power windows circuit and AT89C51 microcontrollers,
The wherein ports a of the first rpyroelectric infrared signal amplification circuit and the ports b of the second rpyroelectric infrared signal amplification circuit difference
It is connected with the ports P1.0 of AT89C51 microcontrollers and the ports P1.1, the ports i of carbon monoxide transducer circuit and AT89C51 are mono-
The ports P1.2 of piece machine are connected, and the ports c of power circuit are connected with the ports VCC of AT89C51 microcontrollers, the ends d of reset circuit
Mouthful be connected with the ports RST of AT89C51 microcontrollers, the ports e and the ports f of clock circuit respectively with AT89C51 microcontrollers
The ports XTAL1 are connected with the ports XTAL2, the ports g and the ports h of power windows the circuit P2.1 with AT89C51 microcontrollers respectively
Port is connected with the ports P2.0；
The first rpyroelectric infrared signal amplification circuit includes operational amplifier U11, operational amplifier U12, operation
1 foot of amplifier U13 and operational amplifier U14, the first pyroelectric infrared sensor PIR1 distinguish one end and the electricity of connecting resistance R1
Hold one end of C6, the other end ground connection of capacitance C6, one end of the other end difference connecting resistance R10 of resistance R1 and power supply VCC, resistance
The other end of R10 connects one end of the inverting input and resistance R9 of operational amplifier U14 respectively, and the other end of resistance R9 connects respectively
The in-phase input end of one end of R8, one end and operational amplifier U12 of capacitance C4, the other end difference connecting resistance R7's of resistance R8
The in-phase input end of one end and operational amplifier U13, the 1 foot ground connection of operational amplifier U14,2 feet of operational amplifier U14 connect electricity
The in-phase input end in source, operational amplifier U14 connects one end of capacitance C3 and one end of R11, the output of operational amplifier U14 respectively
The other end of the anode of terminating diode D2, resistance R11 connects the other end of capacitance C3, operation amplifier respectively by potentiometer PR1
The reverse phase of one end of the inverting input and capacitance C5 of device U12, the output termination operational amplifier U13 of operational amplifier U12 is defeated
Enter end, the other end of capacitance C5 meets the output end of operational amplifier U11, one end of capacitance C2 and resistance R5 respectively by resistance R6
One end, one end of one end and capacitance C1 of the positive input difference connecting resistance R3 of operational amplifier U11, operational amplifier
One end of the other end of the inverting input difference connecting resistance R5 of U11, the other end and potentiometer PR2 of capacitance C2, potentiometer PR2
Connect the other end of 2 feet of the first pyroelectric infrared sensor PIR1, the other end and resistance R3 of resistance R2 respectively through resistance R4, the
3 feet of one pyroelectric infrared sensor PIR1, the other end and electricity of the other end of resistance R2, the other end of capacitance C1, capacitance C4
The other end earth of R7 is hindered, the anode and operational amplifier U14 of the output terminating diode D1 of operational amplifier U13 are just
The cathode of phase input terminal, diode D1 meets the cathode of diode D2, one end of resistance R12 and the ports output a, resistance R12 respectively
The other end ground connection；
The second rpyroelectric infrared signal amplification circuit includes operational amplifier U21, operational amplifier U22, operation
1 foot of amplifier U23 and operational amplifier U24, the second pyroelectric infrared sensor PIR2 distinguish one end and the electricity of connecting resistance R13
Hold one end of C7, the other end ground connection of capacitance C7, one end of the other end difference connecting resistance R22 of resistance R13 and power supply VCC, electricity
The other end of resistance R22 connects one end of the inverting input and resistance R21 of operational amplifier U24, the other end point of resistance R21 respectively
The in-phase input end of one end of R20, one end and operational amplifier U22 of capacitance C11 is not connect, and the other end of resistance R20 connects respectively
The in-phase input end of one end and operational amplifier U23 of resistance R19, the 1 foot ground connection of operational amplifier U24, operational amplifier U24
2 feet connect power supply, the in-phase input end of operational amplifier U24 connects one end of capacitance C10 and one end of R23, operation amplifier respectively
The anode of the output terminating diode D4 of device U24, the other end of resistance R23 meet the another of capacitance C10 respectively by potentiometer PR4
It holds, one end of the inverting input of operational amplifier U22 and capacitance C9, the output of operational amplifier U22 terminates operational amplifier
The other end of the inverting input of U23, capacitance C9 meets the output end of operational amplifier U21, capacitance C12 respectively by resistance R18
One end and resistance R17 one end, one end of the positive input difference connecting resistance R15 of operational amplifier U21 and capacitance C8's
One end, the other end of the inverting input difference connecting resistance R17 of operational amplifier U21, the other end and potentiometer of capacitance C12
One end of PR3, potentiometer PR3 connect respectively through resistance R16 2 feet of the second pyroelectric infrared sensor PIR2, resistance R14 it is another
End and resistance R15 the other end, 3 feet of the second pyroelectric infrared sensor PIR2, the other end of resistance R14, capacitance C8 it is another
The other end earth of one end, the other end of capacitance C11 and resistance R19, the output terminating diode D3 of operational amplifier U23
Anode and operational amplifier U24 normal phase input end, the cathode of diode D3 meets the cathode of diode D4, resistance R24 respectively
One end and output b ports, the other end ground connection of resistance R24；
The power circuit include power transformer T1, three terminal regulator LM7805CT, rectification circuit, filter circuit,
Regulator circuit and secondary filtering circuit, 3 feet of three terminal regulator LM7805CT connect respectively one end of capacitance C15, capacitance C16 one
End and power supply, 1 foot of three terminal regulator LM7805CT meet one end of capacitance C13, one end of capacitance C14, diode D5 respectively
The anode of the cathode of cathode and diode D6, diode D5 connects the cathode of diode D8 and connects diode respectively by coil T1
D6 anode and diode D7 cathode, the anode of diode D8, the anode of diode D7, capacitance C13 the other end, capacitance
The other end earth of the other end of C14,2 feet of three terminal regulator LM7805CT, the other end of capacitance C15 and capacitance C16；
The carbon monoxide transducer circuit includes operational amplifier OP07, and the 3 of CO gas sensor GS-A1
Foot is grounded, and one end of the 2 foot connecting resistance R25 of CO gas sensor GS-A1, the other end of resistance R25 connects power supply respectively
The 1 of CO gas sensor GS-A1 is connect respectively by potentiometer PR6 with the other end of one end of resistance R26, resistance R26
The other end of one end of foot, the inverting input of operational amplifier OP07 and potentiometer PR8, potentiometer PR8 divides by resistance R28
The output end of operational amplifier OP07, one end of capacitance C18 and the ports output i, the homophase input of operational amplifier OP07 are not connect
End is grounded respectively by resistance R27 and one end of capacitance C17, and the other end of capacitance C17 connects 2 feet of operational amplifier OP07 respectively
And power supply, 1 foot of operational amplifier OP07 connect the left end of potentiometer PR5, the upper end of potentiometer PR5 connects power supply respectively and operation is put
4 feet of big device OP07, the right end of potentiometer PR5 connect 3 feet of operational amplifier OP07, and the 4 of CO gas sensor GS-A1
Foot connects power supply by potentiometer PR7；
The reset circuit includes reset key S1, and 2 feet of reset key S1 connect one end of power supply VCC and capacitance C19 respectively,
1 foot of reset key S1 connects the other end of capacitance C19, one end of resistance R29 and the ports output d, another termination of resistance R29 respectively
Output end GND；
The clock circuit includes external quartz oscillator X, and one end of external quartz oscillator X connects respectively
One end of capacitance C20 and the ports output e, the other end of external quartz oscillator X connect one end and the output of capacitance C21 respectively
The ports f, the other end of capacitance C20 and the other end earth of capacitance C21；
The power windows circuit includes two input nand gate NAND1, two input nand gate NAND2, NOT gate NOT1, non-
Door NOT2, NOT gate NOT3, NOT gate NOT4, relay RL1, relay RL2 and motor M, the ports input g connect the input of NOT gate NOT1
End, the output end of NOT gate NOT1 connect anode, the relay of the first input end of two input nand gate NAND1, diode D10 respectively
The output end of the input terminal of one end and NOT gate NOT4 of RL1 coils, two input nand gate NAND1 connects power supply by diode D9,
The output end of the-the second input termination NOT gate NOT3 of two input nand gate NAND1, it is defeated that the input terminal of NOT gate NOT3 connects two respectively
Enter the anode of the first input end of NAND gate NAND2, the output end and diode D11 of NOT gate NOT2, the output end of NOT gate NOT4
The second input terminal of two input nand gate NAND2 is connect, the output end of two input nand gate NAND2 is meeting diode D12 just respectively
One end of pole and relay RL2 coils, the other end of relay RL2 coils and the cathode of diode D12 connect power supply, relay
A termination power of RL2, one end of another termination motor M of relay RL2, one end of another relay termination RL1 of motor M,
The other end of relay RL1 connects power supply by resistance R30, and the other end of relay RL1 coils connects power supply and diode D10 respectively
Cathode, input h ports connect the input terminal of NOT gate NOT2, and the output end of NOT gate NOT2 meets the input terminal of NOT gate NOT3, two respectively
The anode of the first input end and diode D11 of input nand gate NAND2, the cathode of diode D11 connect power supply.
Whether structure of the invention novel and unique, advantages of simple is securely and reliably, easy to operate, can be to have in automatic detection vehicle
People, and at the same time the interior carbonomonoxide concentration of detection, in the car someone and carbonomonoxide concentration it is exceeded in the case of can make
The power windows of automobile is landed automatically.Using effect is good, is the innovation on automotive safety.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the circuit connection diagram of the first rpyroelectric infrared signal amplification circuit in the present invention；
Fig. 3 is the circuit connection diagram of the second rpyroelectric infrared signal amplification circuit in the present invention；
Fig. 4 is the circuit connection diagram of power circuit in the present invention；
Fig. 5 is the circuit connection diagram of carbon monoxide transducer circuit in the present invention；
Fig. 6 is the circuit connection diagram of reset circuit in the present invention；
Fig. 7 is the circuit connection diagram of clock circuit in the present invention；
Fig. 8 is the circuit connection diagram of power windows circuit in the present invention；
Fig. 9 is the pin schematic diagram of AT89C51 microcontrollers in the present invention.
In figure：1, vehicle window, 2, interior chassis, 3, interior ceiling, 4, control circuit, PIR1, the first rpyroelectric infrared sensing
Device, PIR2, the second pyroelectric infrared sensor, GS-A1, carbon monoxide transducer, SWA, reset key.
Specific implementation mode
In conjunction with attached drawing detailed description of the present invention particular content.Automobile anti-suffocation security system, including car body, vehicle window, vehicle
Interior ceiling, interior chassis and interior control panel are respectively equipped with the first rpyroelectric infrared on the car body inner wall of front and back vehicle window bottom
Sensor and the second pyroelectric infrared sensor, interior ceiling middle part are equipped with carbon monoxide transducer, are set on interior control panel
There is a reset key, control circuit is housed through circuit board on interior chassis；
The control circuit includes the first rpyroelectric infrared signal amplification circuit, the second rpyroelectric infrared signal amplification electricity
Road, carbon monoxide transducer circuit, reset circuit, power circuit, clock circuit, power windows circuit and AT89C51 microcontrollers,
The wherein ports a of the first rpyroelectric infrared signal amplification circuit and the ports b of the second rpyroelectric infrared signal amplification circuit difference
It is connected with the ports P1.0 of AT89C51 microcontrollers and the ports P1.1, the ports i of carbon monoxide transducer circuit and AT89C51 are mono-
The ports P1.2 of piece machine are connected, and the ports c of power circuit are connected with the ports VCC of AT89C51 microcontrollers, the ends d of reset circuit
Mouthful be connected with the ports RST of AT89C51 microcontrollers, the ports e and the ports f of clock circuit respectively with AT89C51 microcontrollers
The ports XTAL1 are connected with the ports XTAL2, the ports g and the ports h of power windows the circuit P2.1 with AT89C51 microcontrollers respectively
Port is connected with the ports P2.0；
The first rpyroelectric infrared signal amplification circuit includes operational amplifier U11, operational amplifier U12, operation
1 foot of amplifier U13 and operational amplifier U14, the first pyroelectric infrared sensor PIR1 distinguish one end and the electricity of connecting resistance R1
Hold one end of C6, the other end ground connection of capacitance C6, one end of the other end difference connecting resistance R10 of resistance R1 and power supply VCC, resistance
The other end of R10 connects one end of the inverting input and resistance R9 of operational amplifier U14 respectively, and the other end of resistance R9 connects respectively
The in-phase input end of one end of R8, one end and operational amplifier U12 of capacitance C4, the other end difference connecting resistance R7's of resistance R8
The in-phase input end of one end and operational amplifier U13, the 1 foot ground connection of operational amplifier U14,2 feet of operational amplifier U14 connect electricity
The in-phase input end in source, operational amplifier U14 connects one end of capacitance C3 and one end of R11, the output of operational amplifier U14 respectively
The other end of the anode of terminating diode D2, resistance R11 connects the other end of capacitance C3, operation amplifier respectively by potentiometer PR1
The reverse phase of one end of the inverting input and capacitance C5 of device U12, the output termination operational amplifier U13 of operational amplifier U12 is defeated
Enter end, the other end of capacitance C5 meets the output end of operational amplifier U11, one end of capacitance C2 and resistance R5 respectively by resistance R6
One end, one end of one end and capacitance C1 of the positive input difference connecting resistance R3 of operational amplifier U11, operational amplifier
One end of the other end of the inverting input difference connecting resistance R5 of U11, the other end and potentiometer PR2 of capacitance C2, potentiometer PR2
Connect the other end of 2 feet of the first pyroelectric infrared sensor PIR1, the other end and resistance R3 of resistance R2 respectively through resistance R4, the
3 feet of one pyroelectric infrared sensor PIR1, the other end and electricity of the other end of resistance R2, the other end of capacitance C1, capacitance C4
The other end earth of R7 is hindered, the anode and operational amplifier U14 of the output terminating diode D1 of operational amplifier U13 are just
The cathode of phase input terminal, diode D1 meets the cathode of diode D2, one end of resistance R12 and the ports output a, resistance R12 respectively
The other end ground connection；
The second rpyroelectric infrared signal amplification circuit includes operational amplifier U21, operational amplifier U22, operation
1 foot of amplifier U23 and operational amplifier U24, the second pyroelectric infrared sensor PIR2 distinguish one end and the electricity of connecting resistance R13
Hold one end of C7, the other end ground connection of capacitance C7, one end of the other end difference connecting resistance R22 of resistance R13 and power supply VCC, electricity
The other end of resistance R22 connects one end of the inverting input and resistance R21 of operational amplifier U24, the other end point of resistance R21 respectively
The in-phase input end of one end of R20, one end and operational amplifier U22 of capacitance C11 is not connect, and the other end of resistance R20 connects respectively
The in-phase input end of one end and operational amplifier U23 of resistance R19, the 1 foot ground connection of operational amplifier U24, operational amplifier U24
2 feet connect power supply, the in-phase input end of operational amplifier U24 connects one end of capacitance C10 and one end of R23, operation amplifier respectively
The anode of the output terminating diode D4 of device U24, the other end of resistance R23 meet the another of capacitance C10 respectively by potentiometer PR4
It holds, one end of the inverting input of operational amplifier U22 and capacitance C9, the output of operational amplifier U22 terminates operational amplifier
The other end of the inverting input of U23, capacitance C9 meets the output end of operational amplifier U21, capacitance C12 respectively by resistance R18
One end and resistance R17 one end, one end of the positive input difference connecting resistance R15 of operational amplifier U21 and capacitance C8's
One end, the other end of the inverting input difference connecting resistance R17 of operational amplifier U21, the other end and potentiometer of capacitance C12
One end of PR3, potentiometer PR3 connect respectively through resistance R16 2 feet of the second pyroelectric infrared sensor PIR2, resistance R14 it is another
End and resistance R15 the other end, 3 feet of the second pyroelectric infrared sensor PIR2, the other end of resistance R14, capacitance C8 it is another
The other end earth of one end, the other end of capacitance C11 and resistance R19, the output terminating diode D3 of operational amplifier U23
Anode and operational amplifier U24 normal phase input end, the cathode of diode D3 meets the cathode of diode D4, resistance R24 respectively
One end and output b ports, the other end ground connection of resistance R24；
The power circuit include power transformer T1, three terminal regulator LM7805CT, rectification circuit, filter circuit,
Regulator circuit and secondary filtering circuit, 3 feet of three terminal regulator LM7805CT connect respectively one end of capacitance C15, capacitance C16 one
End and power supply, 1 foot of three terminal regulator LM7805CT meet one end of capacitance C13, one end of capacitance C14, diode D5 respectively
The anode of the cathode of cathode and diode D6, diode D5 connects the cathode of diode D8 and connects diode respectively by coil T1
D6 anode and diode D7 cathode, the anode of diode D8, the anode of diode D7, capacitance C13 the other end, capacitance
The other end earth of the other end of C14,2 feet of three terminal regulator LM7805CT, the other end of capacitance C15 and capacitance C16；
The carbon monoxide transducer circuit includes operational amplifier OP07, and the 3 of CO gas sensor GS-A1
Foot is grounded, and one end of the 2 foot connecting resistance R25 of CO gas sensor GS-A1, the other end of resistance R25 connects power supply respectively
The 1 of CO gas sensor GS-A1 is connect respectively by potentiometer PR6 with the other end of one end of resistance R26, resistance R26
The other end of one end of foot, the inverting input of operational amplifier OP07 and potentiometer PR8, potentiometer PR8 divides by resistance R28
The output end of operational amplifier OP07, one end of capacitance C18 and the ports output i, the homophase input of operational amplifier OP07 are not connect
End is grounded respectively by resistance R27 and one end of capacitance C17, and the other end of capacitance C17 connects 2 feet of operational amplifier OP07 respectively
And power supply, 1 foot of operational amplifier OP07 connect the left end of potentiometer PR5, the upper end of potentiometer PR5 connects power supply respectively and operation is put
4 feet of big device OP07, the right end of potentiometer PR5 connect 3 feet of operational amplifier OP07, and the 4 of CO gas sensor GS-A1
Foot connects power supply by potentiometer PR7；
The reset circuit includes reset key S1, and 2 feet of reset key S1 connect one end of power supply VCC and capacitance C19 respectively,
1 foot of reset key S1 connects the other end of capacitance C19, one end of resistance R29 and the ports output d, another termination of resistance R29 respectively
Output end GND；
The clock circuit includes external quartz oscillator X, and one end of external quartz oscillator X connects respectively
One end of capacitance C20 and the ports output e, the other end of external quartz oscillator X connect one end and the output of capacitance C21 respectively
The ports f, the other end of capacitance C20 and the other end earth of capacitance C21；
The power windows circuit includes two input nand gate NAND1, two input nand gate NAND2, NOT gate NOT1, non-
Door NOT2, NOT gate NOT3, NOT gate NOT4, relay RL1, relay RL2 and motor M, the ports input g connect the input of NOT gate NOT1
End（1）, the output end of NOT gate NOT1（2）Connect respectively the first input end of two input nand gate NAND1, the anode of diode D10,
The input terminal of one end and NOT gate NOT4 of relay RL1 coils（7）, the output end of two input nand gate NAND1 is by diode
D9 connects power supply, the output end of the second input termination NOT gate NOT3 of two input nand gate NAND1（6）, the input terminal of NOT gate NOT3
（5）The first input end of two input nand gate NAND2, the output end of NOT gate NOT2 are connect respectively（4）With the anode of diode D11,
The output end of NOT gate NOT4（8）Connect the second input terminal of two input nand gate NAND2, the output end of two input nand gate NAND2
Connect anode and one end of relay RL2 coils of diode D12 respectively, the other ends of relay RL2 coils and diode D12's
Cathode connects power supply, a termination power of relay RL2, one end of another termination motor M of relay RL2, another termination of motor M
The other end of one end of relay RL1, relay RL1 connects power supply, the other end difference of relay RL1 coils by resistance R30
The cathode of power supply and diode D10 is connect, the ports input h connect the input terminal of NOT gate NOT2（3）, the output end of NOT gate NOT2（4）Point
The input terminal of NOT gate NOT3 is not connect（5）, two input nand gate NAND2 first input end and diode D11 anode, two poles
The cathode of pipe D11 connects power supply.
1 bottom of vehicle window is equipped with 2 pyroelectric infrared sensor PIR1, PIR 2, and detection range is respectively：PIR1：0-5
Rice, PIR2：0-5 meters.Gas sensing devices select high temperature CO gas sensor GS-A1, the sensor pair in the present invention
Carbon monoxide has very high sensitivity, and stability and moisture resistance are good, after adding activated carbon cover, can prevent the organic gas such as ethyl alcohol
Interference.Because CO gas is lighter than air, there are one CO gas to sense for installation on ceiling 3 in the car
Device, and should be mounted within the scope of the air source away from carbon monoxide, that is, 1.5 meters of air conditioning exhausting port radius.
Under normal operation, AT89C51 microcontrollers are by detecting tri- ports P1.0, P1.1, P1.2（It is respectively
AT89C51 microcontrollers the 1st, 2,3 pins）Level state determines to execute whether power windows is opened.If automobile front and rear row is all
Then PIR 1,2 two sensors of PIR are detected simultaneously by human infrared signal to someone of seat, under this pattern, if carbon monoxide contains
Measure exceeded, at this moment ports AT89C51 microcontrollers P1.0, P1.1, P1.2（I.e. respectively the 1st, 2, the 3 of AT89C51 microcontrollers are drawn
Foot）It is high level signal, at this time ports P2.1 of AT89C51 microcontrollers simultaneously（That is 22 pins of AT89C51 microcontrollers）Output
High level, the ports P2.0 of AT89C51 microcontrollers（That is 21 pins of AT89C51 microcontrollers）Low level is exported, RL1 and RL2 inhale
It closes motor right end voltage and is higher than left end voltage, motor reversal, that is, power windows is opened；If someone's heel row that automobile front row is sat does not have
Then 1 sensors of PIR detect human infrared signal to people, and under this pattern, if carbon monoxide content is exceeded, at this moment AT89C51 is mono-
The ports piece machine P1.0, P1.2（I.e. be respectively AT89C51 microcontrollers the 1st, 3 pins）It is high level signal simultaneously, at this time
The ports P2.1 of AT89C51 microcontrollers（That is 22 pins of AT89C51 microcontrollers）High level is exported, AT89C51 microcontrollers
The ports P2.0（That is 21 pins of AT89C51 microcontrollers）Low level is exported, RL1 and RL2 are attracted motor right end voltage and are higher than left end
Voltage, motor reversal, that is, power windows are opened；2 sensors of PIR detect people if someone front row no one that automobile rear is sat
Body infrared signal, under this pattern, if carbon monoxide content is exceeded, at this moment ports AT89C51 microcontrollers P1.1, P1.2（Divide
Not Wei AT89C51 microcontrollers the 2nd, 3 pins）It is high level signal, at this time ports P2.1 of AT89C51 microcontrollers simultaneously（I.e.
22 pins of AT89C51 microcontrollers）Export high level, the ports P2.0 of AT89C51 microcontrollers（That is the 21 of AT89C51 microcontrollers
Pin）Low level is exported, RL1 and RL2 are attracted motor right end voltage and are higher than left end voltage, and motor reversal, that is, power windows is opened；
2 two groups of PIR 1, PIR pyroelectric infrared sensors, general pyroelectricity are red in rpyroelectric infrared signal amplification circuit
Sensitivity of the outer sensor in spectral region is relatively flat, so Fresnel Lenses is housed in sensor probe front,
To improve sensitivity and the anti-interference ability of detection.Pyroelectric infrared sensor PIR 1, PR1, PR2 and the device being attached thereto
Infrared detection and amplifying circuit are constituted, amplifying circuit can be adjusted to rpyroelectric infrared signal by adjusting the value of PR1, PR2
Gain amplifier and attenuation degree to input signal, to adjust the detection range of this group of detection circuit；Rpyroelectric infrared senses
Device PIR 2, PR3, PR4 and the device that is attached thereto constitute infrared detection and amplifying circuit, can by adjusting the value of PR3, PR4
To adjust gain amplifier of the amplifying circuit to rpyroelectric infrared signal and the attenuation degree to input signal, to adjust group detection
The detection range of circuit.
In power circuit, using LM7805CT three terminal regulators, its high, at low cost, small, reliability ratio with performance
The features such as higher.The output voltage of vehicle power supply is 12V, and 12V voltages are converted into AC low-tension after transformer, then again
Rectification and filtering are carried out by bridge rectifier and filter capacitor, then AC low-tension is entered a fixed three-terminal voltage-stabilizing
The GND and IN of device LM7805CT forms unstable DC voltage, using voltage-stablizer LM7805CT voltage stabilizings and electricity at this both ends
Hold C15 filtering, will output end generate voltage stabilization, higher+5 V DC voltages of ratio of precision, this regulated power supply to for
Microcontroller is powered.
GS-A1 sensors, GS series sensors is used mainly to have high sensitivity, power consumption in carbon monoxide transducer circuit
Low, the strong of output signal, selectivity is good, very sensitive to detected gas, and to interference gas, then sensitivity is very low, has
High temperature resistance, anti-high wet performance, element are free of any noble metal catalyst, have the characteristics that anti-poisoning and anti-saturation performance.
Circuit has the normal work that several factors influence circuit, may circuit be entered when operation
The state of endless loop is unable to normal control, and just needing this when to press reset key SAW makes circuit reset restart to execute
Program, to make its microcontroller various functions reset.
Embodiment above describes the basic principles and main features and advantage of the present invention, and the technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe the originals of the present invention
Reason, under the range for not departing from the principle of the invention, various changes and improvements may be made to the invention, these changes and improvements are each fallen within
In the scope of protection of the invention.
Claims (1)
1. automobile anti-suffocation security system, including car body, vehicle window, interior ceiling, interior chassis and interior control panel, feature
It is：The first pyroelectric infrared sensor and the second rpyroelectric infrared sensing are respectively equipped on the car body inner wall of front and back vehicle window bottom
Device, is equipped with carbon monoxide transducer in the middle part of interior ceiling, and interior control panel is equipped with reset key, through circuit on interior chassis
Plate is equipped with control circuit；
The control circuit include the first rpyroelectric infrared signal amplification circuit, the second rpyroelectric infrared signal amplification circuit,
Carbon monoxide transducer circuit, reset circuit, power circuit, clock circuit, power windows circuit and AT89C51 microcontrollers,
In the first rpyroelectric infrared signal amplification circuit the ports a and the second rpyroelectric infrared signal amplification circuit the ports b respectively with
The ports P1.0 of AT89C51 microcontrollers are connected with the ports P1.1, the ports i and the AT89C51 monolithics of carbon monoxide transducer circuit
The ports P1.2 of machine are connected, and the ports c of power circuit are connected with the ports VCC of AT89C51 microcontrollers, the ports d of reset circuit
It is connected with the ports RST of AT89C51 microcontrollers, the ports e and the ports f of the clock circuit XTAL1 with AT89C51 microcontrollers respectively
Port is connected with the ports XTAL2, the ports g and the ports h of power windows circuit respectively with the ports P2.1 of AT89C51 microcontrollers and
The ports P2.0 are connected；
The first rpyroelectric infrared signal amplification circuit includes operational amplifier U11, operational amplifier U12, operation amplifier
1 foot of device U13 and operational amplifier U14, the first pyroelectric infrared sensor PIR1 distinguish one end and the capacitance C6 of connecting resistance R1
One end, the other end ground connection of capacitance C6, one end of the other end difference connecting resistance R10 of resistance R1 and power supply VCC, resistance R10
The other end connect respectively operational amplifier U14 inverting input and resistance R9 one end, the other end of resistance R9 meets R8 respectively
One end, capacitance C4 one end and operational amplifier U12 in-phase input end, the one of the other end difference connecting resistance R7 of resistance R8
The in-phase input end at end and operational amplifier U13, the 1 foot ground connection of operational amplifier U14,2 feet of operational amplifier U14 connect electricity
The in-phase input end in source, operational amplifier U14 connects one end of capacitance C3 and one end of R11, the output of operational amplifier U14 respectively
The other end of the anode of terminating diode D2, resistance R11 connects the other end of capacitance C3, operation amplifier respectively by potentiometer PR1
The reverse phase of one end of the inverting input and capacitance C5 of device U12, the output termination operational amplifier U13 of operational amplifier U12 is defeated
Enter end, the other end of capacitance C5 meets the output end of operational amplifier U11, one end of capacitance C2 and resistance R5 respectively by resistance R6
One end, one end of one end and capacitance C1 of the positive input difference connecting resistance R3 of operational amplifier U11, operational amplifier
One end of the other end of the inverting input difference connecting resistance R5 of U11, the other end and potentiometer PR2 of capacitance C2, potentiometer PR2
Connect the other end of 2 feet of the first pyroelectric infrared sensor PIR1, the other end and resistance R3 of resistance R2 respectively through resistance R4, the
3 feet of one pyroelectric infrared sensor PIR1, the other end and electricity of the other end of resistance R2, the other end of capacitance C1, capacitance C4
The other end earth of R7 is hindered, the anode and operational amplifier U14 of the output terminating diode D1 of operational amplifier U13 are just
The cathode of phase input terminal, diode D1 meets the cathode of diode D2, one end of resistance R12 and the ports output a, resistance R12 respectively
The other end ground connection；
The second rpyroelectric infrared signal amplification circuit includes operational amplifier U21, operational amplifier U22, operation amplifier
1 foot of device U23 and operational amplifier U24, the second pyroelectric infrared sensor PIR2 distinguish one end and the capacitance C7 of connecting resistance R13
One end, the other end ground connection of capacitance C7, one end of the other end difference connecting resistance R22 of resistance R13 and power supply VCC, resistance R22
The other end connect respectively operational amplifier U24 inverting input and resistance R21 one end, the other end of resistance R21 connects respectively
The other end of the in-phase input end of one end of R20, one end and operational amplifier U22 of capacitance C11, resistance R20 distinguishes connecting resistance
The in-phase input end of one end and operational amplifier U23 of R19, the 1 foot ground connection of operational amplifier U24, the 2 of operational amplifier U24
Foot connects power supply, and the in-phase input end of operational amplifier U24 connects one end of capacitance C10 and one end of R23, operational amplifier respectively
The anode of the output terminating diode D4 of U24, the other end of resistance R23 meet the another of capacitance C10 respectively by potentiometer PR4
It holds, one end of the inverting input of operational amplifier U22 and capacitance C9, the output of operational amplifier U22 terminates operational amplifier
The other end of the inverting input of U23, capacitance C9 meets the output end of operational amplifier U21, capacitance C12 respectively by resistance R18
One end and resistance R17 one end, one end of the positive input difference connecting resistance R15 of operational amplifier U21 and capacitance C8's
One end, the other end of the inverting input difference connecting resistance R17 of operational amplifier U21, the other end and potentiometer of capacitance C12
One end of PR3, potentiometer PR3 connect respectively through resistance R16 2 feet of the second pyroelectric infrared sensor PIR2, resistance R14 it is another
End and resistance R15 the other end, 3 feet of the second pyroelectric infrared sensor PIR2, the other end of resistance R14, capacitance C8 it is another
The other end earth of one end, the other end of capacitance C11 and resistance R19, the output terminating diode D3 of operational amplifier U23
Anode and operational amplifier U24 normal phase input end, the cathode of diode D3 meets the cathode of diode D4, resistance R24 respectively
One end and output b ports, the other end ground connection of resistance R24；
The power circuit includes power transformer T1, three terminal regulator LM7805CT, rectification circuit, filter circuit, voltage stabilizing
Circuit and secondary filtering circuit, 3 feet of three terminal regulator LM7805CT connect respectively one end of capacitance C15, capacitance C16 one end and
Power supply, 1 foot of three terminal regulator LM7805CT connect respectively one end of capacitance C13, one end of capacitance C14, diode D5 cathode
The cathode of diode D8 is connect with the anode of the cathode of diode D6, diode D5 and connects diode D6's respectively by coil T1
The cathode of anode and diode D7, the anode of diode D8, the anode of diode D7, the other end of capacitance C13, capacitance C14
The other end earth of the other end, 2 feet of three terminal regulator LM7805CT, the other end of capacitance C15 and capacitance C16；
The carbon monoxide transducer circuit includes operational amplifier OP07, and 3 feet of CO gas sensor GS-A1 connect
Ground, one end of the 2 foot connecting resistance R25 of CO gas sensor GS-A1, the other end of resistance R25 connect power supply and electricity respectively
One end of R26 is hindered, the other end of resistance R26 connects 1 foot, the fortune of CO gas sensor GS-A1 by potentiometer PR6 respectively
One end of the inverting input and potentiometer PR8 of Amplifier OP07 is calculated, the other end of potentiometer PR8 connects respectively by resistance R28
The output end of operational amplifier OP07, one end of capacitance C18 and the ports output i, the in-phase input end warp of operational amplifier OP07
It crosses resistance R27 to be grounded respectively and one end of capacitance C17, the other end of capacitance C17 connects 2 feet and electricity of operational amplifier OP07 respectively
Source, 1 foot of operational amplifier OP07 connect the left end of potentiometer PR5, and the upper end of potentiometer PR5 connects power supply and operational amplifier respectively
The right end of 4 feet of OP07, potentiometer PR5 connects 3 feet of operational amplifier OP07, the 4 feet warp of CO gas sensor GS-A1
Overpotential device PR7 connects power supply；
The reset circuit includes reset key S1, and 2 feet of reset key S1 connect one end of power supply VCC and capacitance C19 respectively, is resetted
1 foot of key S1 connects the other end of capacitance C19, one end of resistance R29 and the ports output d, another termination output of resistance R29 respectively
Hold GND；
The clock circuit includes external quartz oscillator X, and one end of external quartz oscillator X connects capacitance respectively
The other end of one end and the ports output e of C20, external quartz oscillator X connects one end and the ends output f of capacitance C21 respectively
Mouthful, the other end of capacitance C20 and the other end earth of capacitance C21；
The power windows circuit includes two input nand gate NAND1, two input nand gate NAND2, NOT gate NOT1, NOT gate
NOT2, NOT gate NOT3, NOT gate NOT4, relay RL1, relay RL2 and motor M, the ports input g connect the input of NOT gate NOT1
End, the output end of NOT gate NOT1 connect anode, the relay of the first input end of two input nand gate NAND1, diode D10 respectively
The output end of the input terminal of one end and NOT gate NOT4 of RL1 coils, two input nand gate NAND1 connects power supply by diode D9,
The output end of the second input termination NOT gate NOT3 of two input nand gate NAND1, the input terminal of NOT gate NOT3 connect two inputs respectively
The anode of the first input end of NAND gate NAND2, the output end and diode D11 of NOT gate NOT2, the output termination of NOT gate NOT4
The output end of the second input terminal of two input nand gate NAND2, two input nand gate NAND2 connects the anode of diode D12 respectively
With one end of relay RL2 coils, the other end of relay RL2 coils and the cathode of diode D12 meet power supply, relay RL2
A termination power, one end of another termination motor M of relay RL2, one end of another relay termination RL1 of motor M, relay
The other end of device RL1 connects power supply by resistance R30, and the other ends of relay RL1 coils connects the negative of power supply and diode D10 respectively
Pole, the ports input h connect the input terminal of NOT gate NOT2, and the output end of NOT gate NOT2 connects the input terminal of NOT gate NOT3, two inputs respectively
The anode of the first input end and diode D11 of NAND gate NAND2, the cathode of diode D11 connect power supply.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610942976.XA CN106427858B (en) | 2016-10-26 | 2016-10-26 | Automobile anti-suffocation security system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610942976.XA CN106427858B (en) | 2016-10-26 | 2016-10-26 | Automobile anti-suffocation security system |
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| CN106427858B true CN106427858B (en) | 2018-07-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107097645B (en) * | 2017-05-27 | 2023-10-13 | 邢台学院 | Safety monitoring and controlling device for environment in automobile |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102602349A (en) * | 2012-03-29 | 2012-07-25 | 吉林大学 | Carbon monoxide poisoning preventive control system for idling automobile |
| CN203827562U (en) * | 2014-03-24 | 2014-09-10 | 南京信息工程大学 | Illumination energy saving controller |
| CN104458005A (en) * | 2014-11-29 | 2015-03-25 | 成都思茂科技有限公司 | High-sensitivity infrared detection system based on linear driving |
| CN205138644U (en) * | 2015-11-26 | 2016-04-06 | 常州工学院 | Infrared human induction detection circuit of electricity is released to heat |
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2016
- 2016-10-26 CN CN201610942976.XA patent/CN106427858B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102602349A (en) * | 2012-03-29 | 2012-07-25 | 吉林大学 | Carbon monoxide poisoning preventive control system for idling automobile |
| CN203827562U (en) * | 2014-03-24 | 2014-09-10 | 南京信息工程大学 | Illumination energy saving controller |
| CN104458005A (en) * | 2014-11-29 | 2015-03-25 | 成都思茂科技有限公司 | High-sensitivity infrared detection system based on linear driving |
| CN205138644U (en) * | 2015-11-26 | 2016-04-06 | 常州工学院 | Infrared human induction detection circuit of electricity is released to heat |
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