CN106504468A - In-car HCL, CO and Smoke Detection wireless alarm system and implementation method - Google Patents
In-car HCL, CO and Smoke Detection wireless alarm system and implementation method Download PDFInfo
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- CN106504468A CN106504468A CN201610972775.4A CN201610972775A CN106504468A CN 106504468 A CN106504468 A CN 106504468A CN 201610972775 A CN201610972775 A CN 201610972775A CN 106504468 A CN106504468 A CN 106504468A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B19/00—Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
- G08B17/117—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means by using a detection device for specific gases, e.g. combustion products, produced by the fire
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
- G08B21/14—Toxic gas alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Human Computer Interaction (AREA)
- Mechanical Engineering (AREA)
- Alarm Systems (AREA)
Abstract
The present invention relates to a kind of in-car HCL, CO and Smoke Detection wireless alarm system and implementation method.Including the HCL, CO, smoke detector alarms and HCL, CO, the Smoke Detection receptor that are separately positioned in housing, HCL, CO, smoke detector alarms are arranged in the car, HCL, CO, Smoke Detection receptor are carried with by driver or car owner, and HCL, CO, Smoke Detection receptor are realized wirelessly being connected with HCL, CO, Smoke Detection receptor；The early warning and monitoring to the harmful gass such as HCL, CO and smog in vehicle drive room is can achieve, the very first time finds dangerous matter sources, and it is dangerous with vehicle spontaneous combustion to inform that occupant is in peril of one's life, and takes counter-measure in time.
Description
Technical field
The present invention relates to a kind of electronic equipment of automotive safety, more particularly to a kind of in-car HCL, CO and Smoke Detection are wireless
Warning system and implementation method.
Background technology
By《JB/T8139-1999 road vehicle low-voltage cables》Can detect, wiring harness for vehicles insulation main material is poly-
Vinyl chloride, when wire harness excessively stream or overheated reaches uniform temperature（240℃）When, polrvinyl chloride is decomposed and produces substantial amounts of HCL gas
Body, is not only able to accelerate the decomposition of wire harness aging, also harmful.
CO gases are that a kind of toxicity is high, the gas that fatality rate is high, and which is when concentration reaches 0.04ppm in atmosphere
Causing death.The source of the possible CO of automotive interior mostlys come from vehicle exhaust, especially poor in relative closure, air flow property
Place, do not stop working turn on the aircondition outer circulation when, easily by the CO suctions compartment in tail gas, the accumulative speed of in-car CO is carried rapidly
Height, in car steering room, the asphyxiant accident of personnel happens occasionally, and its main cause is that electromotor is in idling operation, personnel
Long-time is indoor in closed driving, drives interior CO contents and has exceeded the concentration received by normal person, causes personnel
The even dead accident of asphyxia.Additionally, a large amount of toxic gas, personnel in a lot of fire cases can be produced when vehicle occurs spontaneous combustion
Injures and deaths are caused due to CO gassings.Therefore fire is found at the burning initial stage and reported to the police, can reduce to a great extent
Casualties and property loss.CO gases are a kind of inflammable and explosive toxic gas, and a small amount of CO can give people body and cause to hinder
Evil.As its colorless and odorless is difficult to be found and perceives, so that poisoning and explosive incident happen occasionally.
However, for the alarm of HCL, CO and smog these hazardous gases, simply power application and mining industry etc. are few at present
Several rows industry.
Not for HCL, CO and the device of smog integration Concentration Testing in existing vehicle cab, once in-car
HCL or CO or smog are exceeded（Because fire is produced）, not only cannot very first time unusual circumstance carry out fire alarm, electrically
The toxic gas that circuit thermal decomposition is produced are even more the life security for jeopardizing occupant.Both at home and abroad for vehicle security against fire early warning
Mechanism is not also paid attention to completely, and most of car enterprise is in space state for the monitoring of in-car toxic gas.
Content of the invention
In view of the situation of prior art, present invention offer a kind of in-car HCL, CO and Smoke Detection wireless alarm system and reality
Existing method, realizes that the early warning and monitoring to the harmful gass such as HCL, CO and smog in vehicle drive room, the very first time find dangerous matter sources,
Inform that occupant is in peril of one's life dangerous with vehicle spontaneous combustion.
For achieving the above object, the technical scheme for being adopted is the present invention：A kind of in-car HCL, CO and Smoke Detection are wireless
Warning system, it is characterised in that：Including the HCL, CO, smoke detector alarms and HCL, CO, the smog that are separately positioned in housing
Detection receptor, HCL, CO, smoke detector alarms are arranged in the car, and HCL, CO, Smoke Detection receptor are by driver or car
Master carries with, and HCL, CO, Smoke Detection receptor are realized wirelessly being connected with HCL, CO, Smoke Detection receptor；
The HCL, CO, smoke detector alarms, including CO sensor U4, Smoke Sensor U3, HCL sensor periphery circuit,
12V turns 5V power module N2, wireless communication module U2, single-chip microcomputer N4；The single-chip microcomputer N4 is passed with CO sensor U4, smog respectively
Sensor U3, HCL sensor periphery circuit, wireless communication module U2 connections, 12V turn 5V power modules N2 for respectively CO sensors
U4, Smoke Sensor U3, HCL sensor periphery circuit provide power supply, and 12V turns 5V power modules N2 and turns 3.3V power supplys turn by 5V
Change circuit power supply is provided for single-chip microcomputer N4, wireless communication module U2；
In-car HCL, CO, Smoke Detection receptor, fill including wireless communication module U5, single-chip microcomputer N6, lithium battery BT2, lithium battery
Circuit, power circuit, clock circuit, LCD display circuit, key circuit, buzzer B1, buzzer B2,
The single-chip microcomputer N6 respectively with wireless communication module U5, clock circuit, LCD display circuit, key circuit, buzzer B1,
Buzzer B2 connect, the lithium battery charging circuit by lithium battery BT2 respectively with power circuit, buzzer B1, buzzer B2
Connection, power circuit are connected with wireless communication module U5.
A kind of in-car HCL, CO and the implementation method of smog wireless alarm system, it is characterised in that：To be arranged in housing
HCL, CO, smoke detector alarms in the compartment, sensor probe is partially exposed at outside housing, will be arranged in housing
HCL, CO, Smoke Detection receptor carried with by driver or car owner；
, with single-chip microcomputer N4 as core, the A/D converter inside single-chip microcomputer N4 is from CO sensings for HCL, CO, smoke detector alarms
Device U4, the analogue signal of the gas concentration of Smoke Sensor U3, HCL sensor U1 are converted to digital signal, are sent to single-chip microcomputer N4
Arithmetic operation unit, with set alarm door limit value be compared, if the concentration value of above-mentioned harmful gass beyond set
Above sensing data by the communication protocol packing for setting, is sent to wireless communication module U2 by the upper limit, single-chip microcomputer N4, and then control is sent out
Wireless communication module U2, wireless communication module U2 receive the firing order from single-chip microcomputer N4, the biography that single-chip microcomputer N4 is sent
To on transmitting carrier wave, the antenna ANT1 connect by wireless communication module U2 is launched the modulation of sensor packing data, single-chip microcomputer
N4 timings by sensor dormancy, wake up so as to reducing Overall Power Consumption；
When there is alarm equipment alarm, the radiofrequency signal that the wireless communication module U5 in HCL, CO, Smoke Detection receptor is received
Level is higher than its receiving sensitivity, you can normally receive alarm signal, and wireless communication module U5 reports to the police being modulated with of receiving
Information Radio Frequency signal is demodulated, and is obtained the relevant CO sensors U4 by the communication protocol packing for setting, Smoke Sensor U3, HCL and is passed
The data of sensor U1 gas concentrations, send single-chip microcomputer N6, single-chip microcomputer N6 to control the LCD display of LCD display circuit, show in real time
The concentration data of CO, smog and HCL, simultaneously drives buzzer warning, if CO and smokescope exceed sets concentration, drives
Buzzer B1 reports to the police, if HCL concentration exceedes sets concentration, drives buzzer B2 to report to the police, makes driver or car owner timely
The in-car danger situation of solution, is taken measures rapidly；
System design has real time clock circuit, when occurring to report to the police, integration when system can store warning time of origin and report to the police
The concentration data of sensor；
User of service can pass through the button and LCD display of key circuit and consult real-time CO, smog, HCL concentration datas, arrange
High alarm setting, checks history warning message；
Lithium battery charging circuit charges for system power supply lithium battery BT2, possesses charging and indicates and anti-overcharge function；HCL, CO, cigarette
Mist detection receptor once charges and can use 4 to 5 days.
The invention has the beneficial effects as follows：Using electrochemistry CLE-1431 sensor, design is applied to in-car, can realize HCL
Online monitoring alarm function, produces the monitoring of gas HCL, can timely and effectively find vapour during by insulating to wire harness and thermally decompose
Car drives the disaster hidden-trouble of house line's beam, and can just report to the police when wire harness is just thermally decomposed, and carries back and informs driving
The failure of personnel's vehicle harness, it is to avoid dangerous, can not only prevent wire harness further aging on fire, prevention vehicle fire, also to people
Body plays a protective role.
Based on digital CO sensors, design is applied to in-car, and the warning function of energy real-time implementation CO on-line monitoring is prevented
Personnel's poisoning and the generation of explosive incident.When drive interior CO concentration over-standards when and alarm, prompting occupant, can subtract
The generation of few suffocation accident.
Vehicle incidents of spontaneous combustion happens occasionally, and is much that fire early stage has a large amount of smog and produces, based on number from the beginning of glowing
Word formula Smoke Sensor, design are applied to in-car, and the warning function of energy real-time implementation smog on-line monitoring, as driving interior CO
During concentration over-standard and alarm, occupant is reminded, the generation of suffocation accident can be reduced.
Using digital CO sensors more ripe at present, coordinate smoke alarm, report to the police during by self-burning of vehicle
Accuracy rate further lifted, formed a set of than more complete vehicle fire safety pre-warning system.
Medium and long distance is realized using SX1278 wireless modules, the real-time Data Transmission mode without communication expense, for alarm
Warning message transmission is carried out and between receptor.
In a word, the early warning and monitoring to the harmful gass such as HCL, CO and smog in vehicle drive room can achieve, and the very first time is sent out
Existing dangerous matter sources, and it is dangerous with vehicle spontaneous combustion to inform that occupant is in peril of one's life, and takes counter-measure in time.
Description of the drawings
Fig. 1 is the circuit connection block diagram of the present invention；
Fig. 2 is the circuit connection block diagram of HCL of the present invention, CO, smoke detector alarms；
Fig. 3 is the circuit connection block diagram of HCL of the present invention, CO, Smoke Detection receptor；
Fig. 4 is the circuit theory diagrams of HCL of the present invention, CO, smoke detector alarms；
Fig. 5 is HCL of the present invention, CO, the circuit theory diagrams of Smoke Detection receptor.
Specific embodiment
As shown in Figure 1, 2, 3, in-car HCL, CO and Smoke Detection wireless alarm system, including being separately positioned in housing
HCL, CO, smoke detector alarms and HCL, CO, Smoke Detection receptor, HCL, CO, smoke detector alarms are arranged on car
Interior, HCL, CO, Smoke Detection receptor are carried with by driver or car owner, HCL, CO, Smoke Detection receptor and HCL, CO,
Wireless connection realized by Smoke Detection receptor.
HCL, CO, smoke detector alarms, including CO sensor U4, Smoke Sensor U3, HCL sensor periphery circuit,
12V turns 5V power module N2, wireless communication module U2, single-chip microcomputer N4；The single-chip microcomputer N4 is passed with CO sensor U4, smog respectively
Sensor U3, HCL sensor periphery circuit, wireless communication module U2 connection, 12V turn 5V power modules N2 for respectively with CO sensors
U4, Smoke Sensor U3, HCL sensor periphery circuit provide power supply, and 12V turns 5V power modules N2 and turns 3.3V power supplys turn by 5V
Change circuit power supply is provided for single-chip microcomputer N4, wireless communication module U2.
In-car HCL, CO, Smoke Detection receptor, including wireless communication module U5, single-chip microcomputer N6, lithium battery BT2, lithium electricity
Pond charging circuit, power circuit, clock circuit, LCD display circuit, key circuit, buzzer B1, buzzer B2.
Single-chip microcomputer N6 respectively with wireless communication module U5, clock circuit, LCD display circuit, key circuit, buzzer B1,
Buzzer B2 connect, the lithium battery charging circuit by lithium battery BT2 respectively with power circuit, buzzer B1, buzzer B2
Connection, power circuit are connected with wireless communication module U5.
As shown in figure 4, the physical circuit of HCL, CO, smoke detector alarms is connected as：12V turns the 3 of 5V power module N2
Foot, 4 feet are in parallel with electric capacity C8, C9, and 3 feet are grounded, and 4 feet provide power supply VCC, and the input pin IN of power conversion chip N3 connects power supply
VCC, output pin OU connect electric capacity C10, one end of electric capacity C11 respectively and provide 3.3V power supplys, electric capacity C10, the other end of electric capacity C11
And the grounding leg GND of power conversion chip N3 is grounded respectively.
3 feet of single-chip microcomputer N4,4 feet are in parallel with crystal G1, and one end of crystal G1 is grounded by electric capacity C6, and crystal G1's is another
End is grounded by electric capacity C7, and 31 feet of single-chip microcomputer N4 are grounded by resistance R10, and 12 feet are grounded, and CO sensors U4 and smog are sensed
4 feet of device U3 connect 1 foot of power supply VCC, CO sensors U4 and Smoke Sensor U3 respectively and are grounded respectively, and the 3 of Smoke Sensor U3
Foot distinguishes one end of connecting resistance R11 and 26 feet of single-chip microcomputer N4 by resistance R12, and the other end of resistance R11 connects single-chip microcomputer N4's
27 feet, 3 feet of CO sensor U4 distinguish one end of connecting resistance R14 and 21 feet of single-chip microcomputer N4 by resistance R13, resistance R14's
The other end connects 19 feet of single-chip microcomputer N4.
1 foot of wireless communication module U2 connects 13 feet of single-chip microcomputer N4, and 2 feet connect 5 feet and resistor chain UN1 of single-chip microcomputer N4 respectively
16 feet, 3 feet connect 15 feet of 14 feet and resistor chain UN1 of single-chip microcomputer N4 respectively, and 4 feet connect 15 feet and resistance of single-chip microcomputer N4 respectively
14 feet of row UN1,5 feet connect 13 feet of 16 feet and resistor chain UN1 of single-chip microcomputer N4 respectively, and 6 feet connect 12 feet of single-chip microcomputer N4 respectively
And 12 feet of resistor chain UN1,8 feet connect 11 feet of 25 feet and resistor chain UN1 of single-chip microcomputer N4 respectively, and 9 feet meet single-chip microcomputer N4 respectively
24 feet and resistor chain UN1 10 feet, 10 feet connect 9 feet of 23 feet and resistor chain UN1 of single-chip microcomputer N4 respectively, and 11 feet connect single-chip microcomputer
11 feet of N4,1 foot of 12 feet difference connecting resistance row UN1,2 feet, 3 feet, 4 feet, 5 feet, 6 feet, 7 feet, 8 feet and 3.3V power supplys, 13 feet,
14 feet, 15 feet, 16 feet are grounded respectively, and 17 feet meet antenna ANT1.
The C feet of the HCL sensor U1 of HCL sensor periphery circuits connect one end of electric capacity C2 and the output of chip N1A respectively
Hold 1 foot, R feet connect one end of the other end and resistance R4 of electric capacity C2 by resistance R3, the one of another termination capacitor C4 of resistance R4
End and 3 foot of in-phase input end of chip N1A, one end of the other end difference connecting resistance R7 of electric capacity C4 and chip N1A's is anti-phase defeated
Enter 2 feet of end, 3 feet of another termination variable resistance RP 1 of resistance R7, the 1 foot ground connection of variable resistance RP 1,2 feet pass through resistance R2
3.3V power supplys are connect, 4 foot of power end of chip N1A connects one end of power supply VCC and electric capacity C1, the other end ground connection of electric capacity C1, chip
11 foot of the earth terminal ground connection of N1A, the S feet of HCL sensor U1 distinguish connecting resistance R5, one end of resistance R1, resistance by resistance R9
5 foot of in-phase input end of one end of another termination capacitor C3 of R5 and chip N1B, another chip termination N1B's of electric capacity C3 are anti-
6 foot of phase input and one end of resistance R8,2 feet of another termination variable resistance RP 1 of resistance R8, another termination of resistance R1
The 20 of 7 foot of outfan of chip N1B and one end of resistance R6, one end of another termination capacitor C5 of resistance R6 and single-chip microcomputer N4
Foot, the other end ground connection of electric capacity C5.
The model of HCL sensor U1：CLE-1431, the model of wireless communication module U2：SX1278, smog are sensed
The model of device U3：The model of MQ-2, CO sensor U4：MQ-7, the model of single-chip microcomputer N4：STC12C5616AD.
As shown in figure 5, HCL, CO, the physical circuit of Smoke Detection receptor are connected as：The input pin IN of chip N5 connects electricity
Source VCC, output pin OU connect electric capacity C12, one end of electric capacity C13 respectively and provide 3.3V power supplys, electric capacity C12, electric capacity C13 another
The grounding leg GND of end and power conversion chip N5 is grounded respectively.
The input pin IN of chip N7 meets power supply VCC, and output pin OU connects electric capacity C14, one end of electric capacity C15 respectively and provides
3.3V power supplys, the grounding leg GND of electric capacity C14, the other end of electric capacity C15 and power conversion chip N7 are grounded respectively.
One end of the 1 foot connecting resistance R19 of the lithium battery managing chip N9 of lithium battery charging circuit and the negative pole of lithium battery BT2
And be grounded, the other end of 2 foot connecting resistance R19,3 feet connect the positive pole of lithium battery BT2, and 3 feet, 8 feet distinguish sending and receiving optical diode VD3's
Positive pole, electric capacity C20 positive poles, 1 foot of interface XS1, negative pole of 7 feet by resistance R18 sending and receiving optical diode VD3, lithium battery are managed
6 feet of chip N9, electric capacity C20 negative poles, 3 feet of interface XS1 are grounded respectively.
18 feet of single-chip microcomputer N6,19 feet are in parallel with crystal G2, and one end of crystal G2 is grounded by electric capacity C16, crystal G2's
The other end is grounded by electric capacity C18, and 9 feet of single-chip microcomputer N6 are grounded by resistance R16,35 feet of single-chip microcomputer N6,36 feet, 37 feet,
Correspondingly 7 feet of LCD display circuit, 6 feet, 5 feet, 4 feet, 3 feet connect respectively for 38 feet, 39 feet, the 2 feet ground connection of LCD display circuit, and 1
Foot connects the 3.3V power supplys of chip N5.
1 foot of clock circuit N8 meets power supply VCC, and 2 feet, 3 feet are in parallel with crystal G3, and one end of crystal G3 passes through electric capacity C17
Ground connection, the other end of crystal G3 is grounded by electric capacity C19, and 5 feet connect 14 feet of single-chip microcomputer N6, and 6 feet connect 15 feet of single-chip microcomputer N6, and 7
Foot connects 39 feet of single-chip microcomputer N6, and 8 feet connect the 4 feet ground connection of battery BT1 positive poles, BT1 negative poles and clock circuit N8.
5 feet of key circuit resistor chain UN2,6 feet, 7 feet, 8 feet meet power supply VCC, and 1 foot, 2 feet, 3 feet, 4 feet difference are right successively
28 feet of single-chip microcomputer N6,32 feet, 33 feet, 24 feet should be connect to be connected, 1 foot of resistor chain UN2 is grounded by button S1, and 2 feet pass through
Button S2 is grounded, and 3 feet are grounded by button S3, and 4 feet are grounded by button S4.
Alarm output circuit audion VT1, the emitter stage of audion VT2 connect power supply VCC, audion VT1 colelctor electrodes respectively
The other end ground connection of diode VD1 negative pole, one end of buzzer B1, diode VD1 positive pole and buzzer B1, audion are connect respectively
VT1 base stages connect 21 feet of single-chip microcomputer N6 by resistance R15, and audion VT2 colelctor electrodes connect diode VD2 negative poles, buzzer respectively
The other end ground connection of one end of B2, diode VD2 positive poles and buzzer B2, audion VT2 base stages connect single-chip microcomputer by resistance R17
27 feet of N6.
The model of wireless communication module U5：SX1278, the model of single-chip microcomputer N6：8051 or 8031.
A kind of in-car HCL, CO and the implementation method of smog wireless alarm system, by the HCL being arranged in housing, CO, cigarette
In compartment, sensor probe is partially exposed at outside housing mist detection alarm, by the HCL being arranged in housing, CO, cigarette
Mist detection receptor is carried with by driver or car owner.
, with single-chip microcomputer N4 as core, the A/D converter inside single-chip microcomputer N4 is from CO for HCL, CO, smoke detector alarms
Sensor U4, the analogue signal of the gas concentration of Smoke Sensor U3, HCL sensor U1 are converted to digital signal, are sent to monolithic
The arithmetic operation unit of machine N4, is compared with the alarm door limit value for setting, if the concentration value of above-mentioned harmful gass exceeds set
Above sensing data by the communication protocol packing for setting, is sent to wireless communication module U2, then by the fixed upper limit, single-chip microcomputer N4
Wireless communication module U2 is sent out in control, and wireless communication module U2 receives the firing order from single-chip microcomputer N4, single-chip microcomputer N4 is sent
The modulation of sensor packing data on transmitting carrier wave, the antenna ANT1 connect by wireless communication module U2 is launched, single
Piece machine N4 timings by sensor dormancy, wake up so as to reducing Overall Power Consumption；
12V turns 5V power modules N2 and vehicle power is converted to 5V voltages, gives CO sensor U4, Smoke Sensor U3, HCL all the way
Sensor periphery circuit is powered；Another road turns 3.3V power-switching circuits through 5V and supplies to single-chip microcomputer N4 and wireless communication module U2
Electricity.
When there is alarm equipment alarm, HCL, CO, Smoke Detection receptor within the specific limits such as according to away from 3 kilometers of alarm with
Interior, and without seriously blocking, the level of RF signals that the wireless communication module U5 in HCL, CO, Smoke Detection receptor is received is high
In its receiving sensitivity, you can normally receive alarm signal, wireless communication module U5 penetrates the warning message that is modulated with for receiving
Frequency demodulated signal, obtains relevant CO sensors U4, Smoke Sensor U3, HCL sensor U1 by the communication protocol packing for setting
The data of gas concentration, send single-chip microcomputer N6, single-chip microcomputer N6 to control the LCD display of LCD display circuit, show real-time CO, smog
With the concentration data of HCL, buzzer warning is simultaneously driven, if CO and smokescope exceed sets concentration, drive buzzer
B1 reports to the police, if HCL concentration exceedes sets concentration, drives buzzer B2 to report to the police, makes driver or car owner understand in-car in time
Danger situation, take measures rapidly.
System design has real time clock circuit, when occurring to report to the police, one when system can store warning time of origin and report to the police
The concentration data of body sensor.
User of service can pass through the button and LCD display of key circuit and consult real-time CO, smog, HCL concentration datas,
High alarm setting is set, checks history warning message.
Lithium battery charging circuit charges for system power supply lithium battery BT2, possesses charging and indicates and anti-overcharge function；HCL、
CO, Smoke Detection receptor once charge and can use 4 to 5 days.
AS1360-3.3 power circuits by lithium battery BT2 voltage conversions be 3.3V voltages to single-chip microcomputer N6, radio communication mold
Block U5, clock circuit, LCD display circuit are powered, while providing pull-up level to key circuit.
When having a certain amount of CO, smog or HCL in railway carriage, when reaching high alarm setting, warning message is passed through by alarm
Wireless module passes to receptor, CO in the buzzer of receptor and alarm lamp prompting car owner or driver compartment, smog or
HCL concentration over-standards.
1）CO sensor U4
Major parameter is as follows：
（1）Heating voltage：5±0.2V（AC•DC）
（2）Operating current：140mA
（3）Detectable concentration scope：10-1000ppm
（4）Response time：≤1S（Preheating 3-5 minutes）
（5）Element power consumption：≤0.7W.
The sensor assembly is very high to CO detection sensitivities, long service life, and stability is high, and size is compact, low in energy consumption,
Under the control of single-chip microcomputer, regular dormancy awakening realizes the real time on-line monitoring to CO contents in environment.
2）Smoke Sensor U3
Major parameter is as follows：
（1）Heating voltage：5±0.2V（AC•DC）
（2）Operating current：180mA
（3）Detectable concentration scope：30-10000ppm
（4）Response time：≤20S（Preheating 3-5 minutes）
（5）Element power consumption：≤0.9W.
The sensor assembly is very high to Smoke Detection sensitivity, long service life, and stability is high, and size is compact, in monolithic
Under the control of machine, regular dormancy awakening realizes the real time on-line monitoring to smog content in environment.
3）HCL sensor U1
（1）Range：0-50PPM 0-50PPM
（2）Peak load：100PPM 100PPM
（3）Sensitivity：0.3 ± 0.1uA/ppm
（4）Response time：(T90)≤70 seconds
（5）Resolution：1PPM
（6）The linearity：Linearly
（7）Baseline：(20 ℃) -0.2 ~ 1.0uA
（8）Baseline drift：Equivalent to 0 ~ 5 ppm
（9）Long-time stability：<2% signal value/the moon.
4）12V turns 5V power module N2
Vehicle power is based on 12V, so turning 5V power transfer modules from 12V.
Using the undersized single-row encapsulation of micropower, the module of wide input, in the case of 5V outputs, maximum current is reachable
200mA, adapts to design requirement completely.
5）SX1278 wireless communication modules
SX1278 wireless modules additionally use LoRa in addition to traditional GFSK modulation techniques（Remotely）Spread spectrum.The module tool
There are efficient receiving sensitivity and superpower interference free performance.
Alarm is installed in the car, it is contemplated that vehicle window and building wall by the effective line-of-sight transmission distance of the module up to 3 kilometers
Body, the stop of window, still can ensure that the warning that alarm signal can be carried for transmission to the car owner in being located at house or market connects
Receive device.
6）Single-chip microcomputer
Using low-power consumption, the STC12AD series monolithics with AD conversion function.
Single-chip microcomputer timing controlled CO, smog, the on/off of HCL sensor U1 simultaneously read CO, smog and HCL concentration letter
Breath, during generation concentration overload alarm, is sent to alarm receiver by SX1278 wireless modules.
Claims (3)
1. a kind of in-car HCL, CO and Smoke Detection wireless alarm system, it is characterised in that：Including being separately positioned in housing
HCL, CO, smoke detector alarms and HCL, CO, Smoke Detection receptor, HCL, CO, smoke detector alarms are arranged on car
Interior, HCL, CO, Smoke Detection receptor are carried with by driver or car owner, HCL, CO, Smoke Detection receptor and HCL, CO,
Wireless connection realized by Smoke Detection receptor；
The HCL, CO, smoke detector alarms, including CO sensor U4, Smoke Sensor U3, HCL sensor periphery circuit,
12V turns 5V power module N2, wireless communication module U2, single-chip microcomputer N4；The single-chip microcomputer N4 is passed with CO sensor U4, smog respectively
Sensor U3, HCL sensor periphery circuit, wireless communication module U2 connections, 12V turn 5V power modules N2 for respectively CO sensors
U4, Smoke Sensor U3, HCL sensor periphery circuit provide power supply, and 12V turns 5V power modules N2 and turns 3.3V power supplys turn by 5V
Change circuit power supply is provided for single-chip microcomputer N4, wireless communication module U2；
In-car HCL, CO, Smoke Detection receptor, fill including wireless communication module U5, single-chip microcomputer N6, lithium battery BT2, lithium battery
Circuit, power circuit, clock circuit, LCD display circuit, key circuit, buzzer B1, buzzer B2,
The single-chip microcomputer N6 respectively with wireless communication module U5, clock circuit, LCD display circuit, key circuit, buzzer B1,
Buzzer B2 connect, the lithium battery charging circuit by lithium battery BT2 respectively with power circuit, buzzer B1, buzzer B2
Connection, power circuit are connected with wireless communication module U5.
2. in-car HCL, CO according to claim 1 and Smoke Detection wireless alarm system, it is characterised in that：Described
HCL, CO, the physical circuit of smoke detector alarms are connected as：
It is in parallel with electric capacity C8, C9 that 12V turns 3 feet of 5V power module N2,4 feet, and 3 feet are grounded, and 4 feet provide power supply VCC, Power convert
The input pin IN of chip N3 meets power supply VCC, and output pin OU connects electric capacity C10, one end of electric capacity C11 respectively and provides 3.3V power supplys,
The grounding leg GND of electric capacity C10, the other end of electric capacity C11 and power conversion chip N3 is grounded respectively；
3 feet of single-chip microcomputer N4,4 feet are in parallel with crystal G1, and one end of crystal G1 is grounded by electric capacity C6, and the other end of crystal G1 leads to
Electric capacity C7 ground connection is crossed, 31 feet of single-chip microcomputer N4 are grounded by resistance R10, and 12 feet are grounded, CO sensors U4 and Smoke Sensor U3
4 feet connect 1 foot of power supply VCC, CO sensors U4 and Smoke Sensor U3 respectively and be grounded respectively, 3 feet of Smoke Sensor U3 lead to
One end of resistance R12 difference connecting resistance R11 and 26 feet of single-chip microcomputer N4 are crossed, the other end of resistance R11 connects 27 feet of single-chip microcomputer N4,
3 feet of CO sensor U4 distinguish one end of connecting resistance R14 and 21 feet of single-chip microcomputer N4, the other end of resistance R14 by resistance R13
Connect 19 feet of single-chip microcomputer N4；
1 foot of wireless communication module U2 connects 13 feet of single-chip microcomputer N4, and 2 feet connect the 16 of 5 feet and resistor chain UN1 of single-chip microcomputer N4 respectively
Foot, 3 feet connect 15 feet of 14 feet and resistor chain UN1 of single-chip microcomputer N4 respectively, and 4 feet connect 15 feet and resistor chain of single-chip microcomputer N4 respectively
14 feet of UN1,5 feet connect 13 feet of 16 feet and resistor chain UN1 of single-chip microcomputer N4 respectively, 6 feet connect respectively 12 feet of single-chip microcomputer N4 and
12 feet of resistor chain UN1,8 feet connect 11 feet of 25 feet and resistor chain UN1 of single-chip microcomputer N4 respectively, and 9 feet connect single-chip microcomputer N4's respectively
24 feet and 10 feet of resistor chain UN1,10 feet connect 9 feet of 23 feet and resistor chain UN1 of single-chip microcomputer N4 respectively, and 11 feet meet single-chip microcomputer N4
11 feet, 12 feet difference connecting resistance row's 1 foot of UN1,2 feet, 3 feet, 4 feet, 5 feet, 6 feet, 7 feet, 8 feet and 3.3V power supplys, 13 feet, 14
Foot, 15 feet, 16 feet are grounded respectively, and 17 feet meet antenna ANT1；
The C feet of the HCL sensor U1 of HCL sensor periphery circuits connect one end of electric capacity C2 and the outfan 1 of chip N1A respectively
Foot, R feet connect one end of the other end and resistance R4 of electric capacity C2 by resistance R3, one end of another termination capacitor C4 of resistance R4 and
3 foot of in-phase input end of chip N1A, one end of the other end difference connecting resistance R7 of electric capacity C4 and the inverting input 2 of chip N1A
Foot, 3 feet of another termination variable resistance RP 1 of resistance R7, the 1 foot ground connection of variable resistance RP 1,2 feet are connect by resistance R2
3.3V power supplys, 4 foot of power end of chip N1A meet one end of power supply VCC and electric capacity C1, the other end ground connection of electric capacity C1, chip N1A
11 foot of earth terminal ground connection,
The S feet of HCL sensor U1 distinguish connecting resistance R5, one end of resistance R1, another termination capacitor of resistance R5 by resistance R9
5 foot of in-phase input end of one end of C3 and chip N1B, 6 foot of inverting input and resistance of another chip termination N1B of electric capacity C3
One end of R8,2 feet of another termination variable resistance RP 1 of resistance R8,7 foot of outfan of another chip termination N1B of resistance R1
And 20 feet of one end of resistance R6, one end of another termination capacitor C5 of resistance R6 and single-chip microcomputer N4, another termination of electric capacity C5
Ground；
The model of HCL sensor U1：CLE-1431, the model of wireless communication module U2：SX1278, Smoke Sensor U3
Model：The model of MQ-2, CO sensor U4：MQ-7, the model of single-chip microcomputer N4：STC12C5616AD；
The HCL, CO, the physical circuit of Smoke Detection receptor are connected as：The input pin IN of chip N5 meets power supply VCC, output
Foot OU connects electric capacity C12, one end of electric capacity C13 respectively and provides 3.3V power supplys, and electric capacity C12, the other end of electric capacity C13 and power supply turn
The grounding leg GND for changing chip N5 is grounded respectively；
The input pin IN of chip N7 meets power supply VCC, and output pin OU connects electric capacity C14, one end of electric capacity C15 respectively and provides 3.3V electricity
Source, the grounding leg GND of electric capacity C14, the other end of electric capacity C15 and power conversion chip N7 are grounded respectively；
One end of 1 foot connecting resistance R19 of the lithium battery managing chip N9 of lithium battery charging circuit and the negative pole of lithium battery BT2 simultaneously connect
Ground, the other end of 2 foot connecting resistance R19,3 feet connect the positive pole of lithium battery BT2, and 3 feet, 8 feet difference sending and receiving optical diode VD3 are just
Pole, electric capacity C20 positive poles, 1 foot of interface XS1, negative pole of 7 feet by resistance R18 sending and receiving optical diode VD3, lithium battery manage core
6 feet of piece N9, electric capacity C20 negative poles, 3 feet of interface XS1 are grounded respectively；
18 feet of single-chip microcomputer N6,19 feet are in parallel with crystal G2, and one end of crystal G2 is grounded by electric capacity C16, and crystal G2's is another
End be grounded by electric capacity C18,9 feet of single-chip microcomputer N6 are grounded by resistance R16,35 feet of single-chip microcomputer N6,36 feet, 37 feet, 38 feet,
Correspondingly 7 feet of LCD display circuit, 6 feet, 5 feet, 4 feet, 3 feet connect 39 feet respectively, and the 2 feet ground connection of LCD display circuit, 1 foot connect
The 3.3V power supplys of chip N5；
1 foot of clock circuit N8 meets power supply VCC, and 2 feet, 3 feet are in parallel with crystal G3, and one end of crystal G3 is grounded by electric capacity C17,
The other end of crystal G3 is grounded by electric capacity C19, and 5 feet connect 14 feet of single-chip microcomputer N6, and 6 feet connect 15 feet of single-chip microcomputer N6,7 foot orders
39 feet of piece machine N6,8 feet connect the 4 feet ground connection of battery BT1 positive poles, BT1 negative poles and clock circuit N8；
5 feet of key circuit resistor chain UN2,6 feet, 7 feet, 8 feet meet power supply VCC, and 1 foot, 2 feet, 3 feet, 4 feet are corresponding in turn to and connect
28 feet of single-chip microcomputer N6,32 feet, 33 feet, 24 feet are connected, and 1 foot of resistor chain UN2 is grounded by button S1, and 2 feet pass through button
S2 is grounded, and 3 feet are grounded by button S3, and 4 feet are grounded by button S4；
Alarm output circuit audion VT1, the emitter stage of audion VT2 meet power supply VCC respectively, and audion VT1 colelctor electrodes are distinguished
Meet the other end ground connection of diode VD1 negative poles, one end of buzzer B1, diode VD1 positive poles and buzzer B1, audion VT1
Base stage connects 21 feet of single-chip microcomputer N6 by resistance R15, and audion VT2 colelctor electrodes meet diode VD2 negative poles, buzzer B2 respectively
The other end ground connection of one end, diode VD2 positive poles and buzzer B2, audion VT2 base stages connect single-chip microcomputer N6's by resistance R17
27 feet；
The model of wireless communication module U5：SX1278, the model of single-chip microcomputer N6：8051 or 8031.
3. a kind of using in-car HCL, CO according to claim 1 and the implementation method of smog wireless alarm system, which is special
Levy and be：By the HCL being arranged in housing, CO, smoke detector alarms in compartment, sensor probe is partially exposed at
Outside housing, the HCL being arranged in housing, CO, Smoke Detection receptor are carried with by driver or car owner；
, with single-chip microcomputer N4 as core, the A/D converter inside single-chip microcomputer N4 is from CO sensings for HCL, CO, smoke detector alarms
Device U4, the analogue signal of the gas concentration of Smoke Sensor U3, HCL sensor U1 are converted to digital signal, are sent to single-chip microcomputer N4
Arithmetic operation unit, with set alarm door limit value be compared, if the concentration value of above-mentioned harmful gass beyond set
Above sensing data by the communication protocol packing for setting, is sent to wireless communication module U2 by the upper limit, single-chip microcomputer N4, and then control is sent out
Wireless communication module U2, wireless communication module U2 receive the firing order from single-chip microcomputer N4, the biography that single-chip microcomputer N4 is sent
To on transmitting carrier wave, the antenna ANT1 connect by wireless communication module U2 is launched the modulation of sensor packing data, single-chip microcomputer
N4 timings by sensor dormancy, wake up so as to reducing Overall Power Consumption；
When there is alarm equipment alarm, the radiofrequency signal that the wireless communication module U5 in HCL, CO, Smoke Detection receptor is received
Level is higher than its receiving sensitivity, you can normally receive alarm signal, and wireless communication module U5 reports to the police being modulated with of receiving
Information Radio Frequency signal is demodulated, and is obtained the relevant CO sensors U4 by the communication protocol packing for setting, Smoke Sensor U3, HCL and is passed
The data of sensor U1 gas concentrations, send single-chip microcomputer N6, single-chip microcomputer N6 to control the LCD display of LCD display circuit, show in real time
The concentration data of CO, smog and HCL, simultaneously drives buzzer warning, if CO and smokescope exceed sets concentration, drives
Buzzer B1 reports to the police, if HCL concentration exceedes sets concentration, drives buzzer B2 to report to the police, makes driver or car owner timely
The in-car danger situation of solution, is taken measures rapidly；
System design has real time clock circuit, when occurring to report to the police, integration when system can store warning time of origin and report to the police
The concentration data of sensor；
User of service can pass through the button and LCD display of key circuit and consult real-time CO, smog, HCL concentration datas, arrange
High alarm setting, checks history warning message；
Lithium battery charging circuit charges for system power supply lithium battery BT2, possesses charging and indicates and anti-overcharge function；HCL, CO, cigarette
Mist detection receptor once charges and can use 4 to 5 days.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610972775.4A CN106504468A (en) | 2016-10-27 | 2016-10-27 | In-car HCL, CO and Smoke Detection wireless alarm system and implementation method |
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| CN201610972775.4A CN106504468A (en) | 2016-10-27 | 2016-10-27 | In-car HCL, CO and Smoke Detection wireless alarm system and implementation method |
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Address after: 300381 Nankai District Jin Wei South Road, No. 110, Tianjin Applicant after: Tianjin Institute of Fire Protection, Ministry of Emergency Management Address before: 300381 Nankai District Jin Wei South Road, No. 110, Tianjin Applicant before: Tianjin Fire Fighting Inst., Ministry of Public Security |
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Application publication date: 20170315 |