CN205531925U - Air circumstance information acquisition control system in car based on OBD - Google Patents
Air circumstance information acquisition control system in car based on OBD Download PDFInfo
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- CN205531925U CN205531925U CN201620100932.8U CN201620100932U CN205531925U CN 205531925 U CN205531925 U CN 205531925U CN 201620100932 U CN201620100932 U CN 201620100932U CN 205531925 U CN205531925 U CN 205531925U
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Abstract
The utility model provides an air circumstance information acquisition control system in car based on OBD, including CAN transceiver module, OBD master control analysis module, gas detection module, a weighing sensor and a temperature sensor, a bluetooth modul, wireless safety control module, including wireless transmitter among the wireless safety control module, still including installing the wireless receiver in the door, machine controller, door window motor and car window lift mechanism, gas detection module and temperature sensor contents of the harmful gas and in -car temperature send data conversion and compare to OBD master control analysis module and with the standard value, when one or multinomial data during not at the standard value within range, open the door window, simultaneously send gaseous data and temperature data to driver's cell -phone and hold, in order to remind the driver, the utility model discloses the effectual car OBD function of having utilized makes the interior air circumstance of car keep within the scope of standard value to have the function to driver's notice and suggestion, have good effect.
Description
Technical field
This utility model belongs to automobile and controls diagnostic device field, relates to a kind of in-vehicle air environment information acquisition control system based on OBD and collection control method.
Background technology
OBD is the abbreviation of On-Board Diagnostics (onboard diagnostic system), it is integrated in engine management system, the diagnostic system of monitoring exhaust emissions component working state, OBD system improves engine efficiency by effective engine management and Trouble Report timely and reduces the vehicle exhaust pollution to air.Each the automobile meeting discharge standard has OBD interface, and this interface is referred to as general standard diagnostic adapter, is called for short DLC.DLC has the plug of 16 pins, can be that the device on this interface is powered；The normal mounting position of DLC is below driver's side instrument board.
Along with people are continuously increased the time in car, in-car air quality problem has obtained people and has more and more paid close attention to.In-car air quality not only affects health, also relevant with safe driving.According to detection, the concentration of narmful substance in the automobile of more than 70% all exceeds standard, especially some low and middle-grade automobiles, and exceeding standard rate is up to more than 90%.In-vehicle exposure thing specifically includes that carbon monoxide (CO), volatile organic matter (TVOC) and inhalable granule (PM2.5).The VOC gases such as especially new car in-car air quality problem is the most prominent, formaldehyde, benzene, toluene exceed standard seriously, and car owner is neglectful in taking precautions, and carbon monoxide poisoning can endanger car owner's life security especially.This problem is badly in need of causing the attention of people and having been resolved.
In automobile is parked in garage, when engine idle does not stops working, insufficient due to fuel combustion, easily produce the toxic and harmfuls such as carbon monoxide.
Current environmental monitoring system functional coverage face is wider, highly professional, generally face professional's application, there is the shortcomings such as volume is big, price is high, installation wiring is difficult, operation is complicated, ease for use is poor, and on the market without ripe in-car air quality detection device, it is impossible to automobile is carried out the detection of real-time in-car air quality (including volatile organic matter).
OBD can read automobile ECU (Electronic Control Unit in real time, electronic control unit, also known as car running computer) and the dynamic data of MCU (microcontroller), monitor the various information such as automobile rotational speed, mileage, engine temperature, instantaneous oil consumption, automobile fault code.The fault code indications being not only automobile provided due to automobile-mounted diagnosis interface, also include the substantial amounts of sensor status information of automotive interior and aware circuit status information, be the window of automobile engine dynamical system, clutch transmission system, chassis system, bodywork system and in-vehicle network system and automobile external interactive information.In the driving process of vehicle, a lot of status data can be produced, these vehicle status data include the data such as engine operating state, fuel system, rotating speed, travel speed, temperature, vehicle turbulent conditions, the information of vehicles utilizing OBD to collect can be analyzed the driving model of driver and obtain vehicle traveling information, and is supplied to the suggestion that driver is optimal.
The mode of the relevant control window lifting mentioned in presently relevant OBD patent is to be controlled by automotive interior CAN network, and is accomplished by cracking relevant genuine OBD code by this automobile kind mode.Because of different cars, the instruction rising window is different.Genuine privately owned OBD agreement is difficult to crack, and internal control is complicated, is unfavorable for that vehicle window is controlled and acquisition to information of vehicles by layman.So we need a hardware system to obtain information of vehicles, such as crack reading vehicle door status, mileage, boot, car light, automatic headlight, wiper etc., comparatively speaking, the most flourishing automobile ECU, the data obtained are the most, also forgive all data item that the automobiles such as speed rotating speed are supported simultaneously.This patent book refer to a kind of wireless security and control device, analyzed by OBD, the mode of controlled in wireless, provide a kind of mode for solving this problem.
Utility model content
For solving the deficiencies in the prior art, the purpose of this utility model is to provide a kind of vehicle interior temperature and toxic and harmful content of both can having monitored to open vehicle window to ensure that vehicle interior temperature and toxic and harmful are less than standard value, information of vehicles and detection information are sent the in-vehicle air environment information acquisition control system based on OBD to driver's mobile phone terminal, and collection control method simultaneously.
In order to realize above-mentioned target, this utility model adopts the following technical scheme that:
nullIn-vehicle air environment information acquisition control system based on OBD，Including CAN transceiver module、Module is analyzed in OBD master control、Gas detection module、Temperature sensor、Bluetooth module，It is characterized in that，Also include wireless security control module，12V Vehicular direct-current power supply is connected with OBD interface，OBD interface is by 12V Vehicular direct-current plant-grid connection CAN transceiver module，The input that the serial ports outfan of CAN transceiver module analyzes module with OBD master control is connected，OBD master control analyze module main control chip input respectively with gas detection module、The outfan of temperature sensor connects，OBD master control analyze module main control chip outfan respectively with bluetooth module、The input of the wireless transmitter in wireless security control module connects，Wireless security control module also includes the wireless receiver being arranged in car door、Electric machine controller、Car window electric machine and window regulator device，Wireless transmitter and wireless receiver carry out radio communication，The outfan of wireless receiver is connected with the electric signal input end of electric machine controller，The power input of electric machine controller is connected with 12V Vehicular direct-current power supply by external wire，The outfan of electric machine controller is connected with the input of Car window electric machine，The output shaft of Car window electric machine is connected with the window regulator device controlling window lifting in car door.
Further technical scheme includes:
OBD master control is analyzed module and is included voltage stabilizing chip, main control chip, reset chip, plug-in Flash chip and three-axis sensor chip, the 12V Vehicular direct-current power conversion of access is the voltage being output as 5V by CAN transceiver module, the 5V voltage of output is connected with voltage stabilizing chip, 5V photovoltaic conversion is the voltage being output as 3.3V by voltage stabilizing chip, the voltage of 3.3V is connected with main control chip, reset chip, plug-in Flash chip, the power input of three-axis sensor chip respectively, and main control chip is connected with reset chip, plug-in Flash chip, three-axis sensor chip respectively.
Compared with prior art the beneficial effects of the utility model are:
This utility model adds wireless security control module, by external wire, this module is directly connected to 12V Vehicular direct-current power supply, when in car, carbon monoxide, formaldehyde, the gas content of benzene,toluene,xylene and vehicle interior temperature exceed standard, OBD master control is analyzed module and is controlled the Car window electric machine rotating forward of this inside modules, window regulator device is driven to be fallen by vehicle window, avoid the complex steps cracking the CAN protocol opening vehicle window inside car, it is achieved be automatically adjusted the purpose of environment inside car.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings this utility model is further described:
Fig. 1 is the population structure schematic diagram of in-vehicle air environment information acquisition control system based on OBD described in the utility model.
Fig. 2 is the structural representation of the OBD master control analysis module of in-vehicle air environment information acquisition control system based on OBD described in the utility model.
Fig. 3 is the structural representation of the wireless security control module of in-vehicle air environment information acquisition control system based on OBD described in the utility model.
Fig. 4 is the flow chart of in-vehicle air environment information gathering control method based on OBD described in the utility model.
In figure: 1.12V Vehicular direct-current power supply, 2.OBD interface, 3.CAN transceiver module, module is analyzed in 4.OBD master control, 5. gas detection module, 6. temperature sensor, 7. bluetooth module, 8. mobile phone, 9. wireless security control module, 10. voltage stabilizing chip, 11. main control chips, 12. reset chips, 13. plug-in FLASH chip, 14. three-axis sensor chips, 15. wireless transmitters, 16. wireless receivers, 17. electric machine controllers, 18. Car window electric machines, 19. window regulator devices.
Detailed description of the invention
With detailed description of the invention, this utility model is described in further details below in conjunction with the accompanying drawings.
The concrete structure of in-vehicle air environment information acquisition control system based on OBD described in the utility model is as follows:
nullIncluding CAN transceiver module 3，Module 4 is analyzed in OBD master control，Gas detection module 5，Temperature sensor 6，Bluetooth module 7，Also include wireless security control module 9，12V Vehicular direct-current power supply 1 is connected with OBD interface 2，12V Vehicular direct-current power supply 1 is accessed CAN transceiver module 3 by OBD interface 2，The input that the serial ports outfan of CAN transceiver module 3 analyzes module 4 with OBD master control is connected，OBD master control analyze module 4 main control chip 11 input respectively with gas detection module 5、The outfan of temperature sensor 6 connects，OBD master control analyze module 4 main control chip 11 outfan respectively with bluetooth module 7、The input of the wireless transmitter 15 in wireless security control module 9 connects，Wireless security control module 9 also includes the wireless receiver 16 being arranged in car door、Electric machine controller 17、Car window electric machine 18 and window regulator device 19，Wireless transmitter 15 and wireless receiver 16 carry out radio communication，The outfan of wireless receiver 16 is connected with the electric signal input end of electric machine controller 17，The power input of electric machine controller 17 is connected with 12V Vehicular direct-current power supply 1 by external wire，The outfan of electric machine controller 17 is connected with the input of Car window electric machine 18，The output shaft of Car window electric machine 18 is connected with the window regulator device 19 controlling window lifting in car door.
OBD master control is analyzed module 4 and is included voltage stabilizing chip 10, main control chip 11, reset chip 12, plug-in Flash chip 13 and three-axis sensor chip 14, the 12V Vehicular direct-current power supply 1 of access is converted into the voltage being output as 5V by CAN transceiver module 3, the 5V voltage of output is connected with voltage stabilizing chip 10, 5V photovoltaic conversion is the voltage being output as 3.3V by voltage stabilizing chip 10, the voltage of 3.3V respectively with main control chip 11, reset chip 12, plug-in Flash chip 13, the power input of three-axis sensor chip 14 connects, main control chip 11 respectively with reset chip 12, plug-in Flash chip 13, three-axis sensor chip (14) connects.
The toxic and harmful content such as gas detection module 5 selects IAQ5000, predominantly detects carbon monoxide in car, formaldehyde, benzene, toluene, dimethylbenzene, and the main control chip 11 analyzing module 4 with OBD master control is connected.
AD590 is selected in temperature sensor 6, the most suitable in order to detect vehicle interior temperature.And the main control chip 11 analyzing module 4 with OBD master control is connected.
Bluetooth module 7 selects NRF51822, the communication being mainly responsible between equipment and mobile phone, and the content of communication includes that information of vehicles, temperature and gas exceed standard early warning.The main connected mode of bluetooth module 7 is that the main control chip (11) of the Bluetooth chip based on NRF51822 chip and OBD master control analysis module 4 connects through the realization of J3 interface.The TX1 of RX with J3 on bluetooth module 7 is connected, and the RX1 on TX with J3 is connected.TX1 with RX1 on J3 is connected with 68PA9 and 69PA10 on main control chip 11 respectively simultaneously.
OBD master control is analyzed module 4 and is included voltage stabilizing chip 10, main control chip 11, reset chip 12, plug-in Flash chip 13, three-axis sensor chip 14.
Each chip model and between concrete annexation as follows:
Voltage stabilizing chip 10 selects NCP1117ST33T3: access the 3VIN pin of voltage stabilizing chip 10 from the 5.0V voltage of CAN transceiver module 3 output, and it is output as, from the conversion of 2Vout pin, the main control chip 11 that 3.3V voltage is supplied to circuit, reset chip 12, plug-in Flash chip 13, three-axis sensor chip 14.1 pin ADJ ground connection.
Main control chip 11 uses STM3F103VBT6.The signal processing that main control chip 11 is mainly responsible between each chip, with mutual, coordinated chip operation, is controlled bluetooth module and wireless security control module, it is ensured that whole plank can normally co-ordination simultaneously.Main control chip 11 is from 50VDD_1, and 75VDD_2,100VDD_3,28VDD_4,11VDD_5,22VDD_A access the 3.3V voltage from voltage stabilizing chip 10 output, each pin respectively with plug-in reset chip 12, plug-in Flash chip 13, three-axis sensor chip 14 connects.49VSS_1,74VSS_2,99VSS_3,27VSS_4,10VSS_5,19VSS_A ground connection.
Reset chip 12 selects IMP809SEUR-T: reset chip 12 to access 3.3V voltage from 3VCC pin, and 2RST pin exports, and is connected with the 14NRST on main control chip 11.1GND ground connection.
Plug-in Flash chip 13 selects W25Q32: plug-in Flash chip 13 is from 8Vcc pin, 7HOLD pin and 3WP pin access 3.3V voltage, and from 1CS pin, 2D0 pin, 6CLK pin and the output of 5DI pin, respectively with the 51PB12 pin on main control chip 11,53PB14 pin, 52PB13 pin and the output of 54PB15 pin.4GND pin ground connection.
Three-axis sensor chip 14 selects ADXL345: three-axis sensor chip 14 is from 1VDD pin, 12SDO pin and 6VS pin access 3.3V voltage, and export from 14SCL pin and 13SDA pin, it is connected with the 47PB10 pin on main control chip 9 and 48PB11 pin respectively.2GND, 4GND, 5GND, pin ground connection.
In-vehicle air environment information gathering control method based on OBD described in the utility model, step is as follows:
Step one: gas detection module 5 and temperature sensor 6 detect carbon monoxide in car, formaldehyde, the gas content of benzene,toluene,xylene and vehicle interior temperature, and the real time data of detection is converted to correspondingly sized analog electrical signal, send the main control chip 11 to OBD master control analysis module 4.
nullStep 2: OBD master control analyzes the main control chip 11 of module 4 after the analog electrical signal receiving gas detection module 5 and temperature sensor 6 transmission，It is converted into real time temperature data and gas data，Compare with the corresponding standard value set in main control chip 11 again，The data fluctuations amplitude collected when continuous 10 seconds carbon monoxide within 5 percent and described in step one、Formaldehyde、Benzene、Toluene、When one or more data in the gas content of dimethylbenzene and these data of vehicle interior temperature are not in standard value range，Main control chip 11 judges to need to start wireless security control module 9 and generate the signal of telecommunication to control motor rotating forward，The information that temperature data and gas data exceed standard is changed into the signal of telecommunication and is sent to driver's mobile phone terminal by bluetooth module 7 by the main control chip 11 of the analysis module of OBD master control simultaneously，To remind driver.
Main control chip (11) is after the data receiving temperature sensor and gas detection module transmission, real time temperature data and gas data is obtained after the ADC that processor itself is embedded carries out A/D conversion, temperature and gas data with standard compare again, the data fluctuations amplitude collected when continuous 10 seconds carbon monoxide within 5 percent and described in step one, formaldehyde, benzene, toluene, when one or more data in the gas content of dimethylbenzene and these data of vehicle interior temperature are not in standard value range, main control chip 11 judges to need to start wireless security control module 9 and generate the signal of telecommunication to control motor rotating forward.
The temperature mentioned in described step 2 and toxic and harmful content standard value follow National Standard of the People's Republic of China's Indoor Air Quality standards GB/T18883-2002 setting.Particularly as follows: temperature is in 22-28 DEG C under the conditions of summer air-conditioning, being in 16-24 DEG C in the winter time under heating condition, the little hourly value of carbon monoxide one is 10mg/m3, the little hourly value of formaldehyde one is 0.10mg/m3, the little hourly value of benzene one is 0.11mg/m3, the little hourly value of toluene one is 0.20mg/m3, the little hourly value of dimethylbenzene one is 0.20mg/m3。
Step 3: OBD master control is analyzed the main control chip 11 of module 4 and the signal of telecommunication is sent the wireless transmitter 15 to wireless security control module 9.
Step 4: wireless transmitter 15 converts electrical signals to wireless signal and is sent to wireless receiver 16, the wireless signal received is converted into the signal of telecommunication and is sent to electric machine controller 17 by wireless receiver 16.
Step 5: electric machine controller 17 receive the signal of telecommunication after start Car window electric machine 18 make its persistently rotate forward drive window regulator device 19 move, vehicle window is fallen.
Car window electric machine 18 used is vehicle-mounted conventional permanent magnet DC motor, can be selected for motor drive chip LB1948M of the forward and reverse driving of low saturation voltage comprising two-way.
As a example by LB1948M, explain that motor controller 17 controls the principle of Car window electric machine 18.
After the signal of telecommunication is passed to motor controller 17 by wireless receiver 16, when the input of IN1, IN2 input interface is low level, OUT1, OUT2 output is OFF, and now electric machine operation state is standby mode；When the input of IN1 input interface is high level, during IN2 input interface input low level, OUT1, OUT2 output is respectively high level low level, and now Car window electric machine 18 duty is forward operating；When the input of IN1, IN2 input interface is high level, OUT1, OUT2 output is high level, and now Car window electric machine 18 duty is braking mode；The signal i.e. low and high level received by electric machine controller 17 controls the kinestate of motor, it is achieved controls the startup of Car window electric machine 18, stops and braking.
Claims (2)
- null1. in-vehicle air environment information acquisition control system based on OBD，Including CAN transceiver module (3)、Module (4) is analyzed in OBD master control、Gas detection module (5)、Temperature sensor (6)、Bluetooth module (7)，It is characterized in that，Also include wireless security control module (9)，12V Vehicular direct-current power supply (1) is connected with OBD interface (2)，12V Vehicular direct-current power supply (1) is accessed CAN transceiver module (3) by OBD interface (2)，The input that the serial ports outfan of CAN transceiver module (3) analyzes module (4) with OBD master control is connected，OBD master control analyze module (4) main control chip (11) input respectively with gas detection module (5)、The outfan of temperature sensor (6) connects，OBD master control analyze module (4) main control chip (11) outfan respectively with bluetooth module (7)、The input of the wireless transmitter (15) in wireless security control module (9) connects，Wireless security control module (9) also includes the wireless receiver (16) being arranged in car door、Electric machine controller (17)、Car window electric machine (18) and window regulator device (19)，Wireless transmitter (15) and wireless receiver (16) carry out radio communication，The outfan of wireless receiver (16) is connected with the electric signal input end of electric machine controller (17)，The power input of electric machine controller (17) is connected with 12V Vehicular direct-current power supply (1) by external wire，The outfan of electric machine controller (17) is connected with the input of Car window electric machine (18)，The output shaft of Car window electric machine (18) is connected with the window regulator device (19) controlling window lifting in car door.
- nullIn-vehicle air environment information acquisition control system based on OBD the most according to claim 1，OBD master control is analyzed module (4) and is included voltage stabilizing chip (10)、Main control chip (11)、Reset chip (12)、Plug-in Flash chip (13) and three-axis sensor chip (14)，12V Vehicular direct-current power supply (1) accessed is converted into the voltage being output as 5V by CAN transceiver module (3)，The 5V voltage of output is connected with voltage stabilizing chip (10)，5V photovoltaic conversion is the voltage being output as 3.3V by voltage stabilizing chip (10)，The voltage of 3.3V respectively with main control chip (11)、Reset chip (12)、Plug-in Flash chip (13)、The power input of three-axis sensor chip (14) connects，Main control chip (11) respectively with reset chip (12)、Plug-in Flash chip (13)、Three-axis sensor chip (14) connects.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620100932.8U CN205531925U (en) | 2016-02-01 | 2016-02-01 | Air circumstance information acquisition control system in car based on OBD |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620100932.8U CN205531925U (en) | 2016-02-01 | 2016-02-01 | Air circumstance information acquisition control system in car based on OBD |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569489A (en) * | 2016-02-01 | 2016-05-11 | 吉林大学 | Intra-car air environment information acquisition control system and method based on on-board diagnostics (OBD) |
| CN107804262A (en) * | 2017-10-25 | 2018-03-16 | 奇瑞汽车股份有限公司 | Control method for vehicle, device and computer-readable recording medium |
-
2016
- 2016-02-01 CN CN201620100932.8U patent/CN205531925U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569489A (en) * | 2016-02-01 | 2016-05-11 | 吉林大学 | Intra-car air environment information acquisition control system and method based on on-board diagnostics (OBD) |
| CN107804262A (en) * | 2017-10-25 | 2018-03-16 | 奇瑞汽车股份有限公司 | Control method for vehicle, device and computer-readable recording medium |
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Granted publication date: 20160831 Termination date: 20180201 |
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| CF01 | Termination of patent right due to non-payment of annual fee |