CN201777186U - Automobile dangerous-driving prevention device - Google Patents
Automobile dangerous-driving prevention device Download PDFInfo
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- CN201777186U CN201777186U CN2010205129919U CN201020512991U CN201777186U CN 201777186 U CN201777186 U CN 201777186U CN 2010205129919 U CN2010205129919 U CN 2010205129919U CN 201020512991 U CN201020512991 U CN 201020512991U CN 201777186 U CN201777186 U CN 201777186U
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Abstract
The utility model relates to an automobile dangerous-driving prevention device. The device is characterized in that the device can identify various dangerous automobile driving actions by simultaneously adopting an accelerator sensor and an alcohol sensor to obtain automobile data in real time, effectively reduces false alarm rate by adopting the means of accumulating dangerous coefficient for dangerous driving degree statistic, gives alarm and prevents dangerous driving by means of voice, LCD display and short message and telephone functions of a GSM module, requires no modification of an automobile and is more humanized in prevention mode. The automobile dangerous-driving prevention device has the advantages of simple structure, convenience in installation, strengthened functions, effective prevention of dangerous driving, more humanized prevention mode and convenience for market popularization.
Description
Technical field
The utility model relates to a kind of automobile intelligent electronic device, especially a kind of dangerous driving prevention device for automobiles.
Background technology
According to statistics, by in March, 2010 China's vehicle guaranteeding organic quantity nearly 1.92 hundred million, national vehicle driver has 2.05 hundred million approximately, automobile has entered our life as a kind of usual consumables, be many facilities that our trip comes.Yet according to Ministry of Public Security statistics, 2008,265204 of road traffic accidents took place in the whole nation altogether, caused 73484 people's death, 304919 people injured, 10.1 hundred million yuan of direct property loss.
And it is reported that the reason that causes a traffic accident is artificial factor mostly since some awareness of safety thin, ignore road traffic laws and regulations, usually accidentally lead to tragedy.
At present, known dangerous driving prevention device has many shortcomings, as function singleness, the not hommization of mode etc. that needs street rod, be difficult to avoid to fake (can opening by the people who does not drink as the alcohol lock) and stop dangerous driving.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of dangerous driving prevention device is provided, and by analyzing multiple dangerous driving action, improves the accuracy of judging dangerous driving.
The technical scheme that provides according to the utility model, described dangerous driving prevention device for automobiles comprises: microcontroller, described microcontroller is connected with acceleration pick-up, and connects alcohol sensor by AD converter, and described microcontroller also is connected with gsm module, read-out and loud speaker; Described microcontroller is by the collection to sensing data, identification comprises drunken driving, the dangerous dangerous play of quickening, quickening turning, improper sudden stop and car accident, by each dangerous play being carried out the danger coefficient assessment, obtain total danger coefficient of driving, and whether will use gsm module to stop driver driving according to dangerous play type and total danger coefficient decision.
Described gsm module is connected by wireless network with the setting mobile phone terminal.Be used for sending note, or accept dialing of particular hand plane No., be used for conversing with the driver to the particular hand plane No..When total danger coefficient surpasses predetermined threshold value, then gsm module sends the caution note to the particular hand plane No. of prior setting, described caution note reminds specific people to call back to stop the driver to continue driving, and after described specific people called back, gsm module was connected hands-free phone automatically.
Described microcontroller can adopt micro controller system.Microcontroller passes through I
2Total wire joint acceleration pick-up of C and AD converter.
It is according to average acceleration and acceleration peak value in the accelerator that hazard recognition quickens, it is according to the average acceleration in the accelerator forward or backward and the horizontal average acceleration of accelerator that identification quicken to be turned, discerning improper sudden stop is according to acceleration/accel aviation value and acceleration peak value in the brake process, and the identification car accident is that the take off data according to acceleration pick-up reaches or exceeds maximum measurement range.
Total danger coefficient is dangerous quicken, quicken turning, improper sudden stop and car accident danger coefficient sum separately.The identification drunken driving is to surpass preset value according to the average alcohol concentration of alcohol sensor in Preset Time above threshold value and total danger coefficient.
The utility model has the advantages that: can detect airborne alcohol concentration and the automobile acceleration/accel of four direction all around simultaneously, and judge dangerous driving and determine danger coefficient with this; Need not to change automobile, the convenient installation; Adopt voice, the SMS prevention driver dangerous driving easily and effectively of gsm module; The dangerous driving of driver is warned, stoped to this device by devices such as LCD dot matrix screen, loud speaker, gsm modules simultaneously, need not automobile is changed, and conveniently installs on automobile.
Description of drawings
Fig. 1 is a circuit structure block diagram of the present utility model.
Fig. 2 is a main program flow chart of the present utility model.
Fig. 3 is data acquisition flow figure of the present utility model.
Fig. 4 is flow chart of data processing figure of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.As shown in Figure 1, the utility model comprises microcontroller, acceleration pick-up, alcohol sensor, AD converter, gsm module, power unit, lcd screen and loud speaker.Alcohol sensor is connected with AD converter, the AD converter that the voltage signal that in real time airborne alcohol concentration is caused passes to, and AD converter is analog signal conversion a digital signal.Acceleration pick-up obtains the automobile acceleration information of four direction all around in real time.AD converter and acceleration pick-up pass through I
2The C bus is articulated in micro controller I
2On the C interface, microcontroller passes through I
2The data of alcohol sensor and acceleration pick-up acquisition are read in the operation of C bus.Gsm module is connected on the microcontroller by a serial port and a 8-digit microcontroller I/O mouth, microcontroller is by the operation to this I/O mouth and serial port, make the operation that sends note and connect phone, gsm module is connecting microphone and loud speaker, is used for hand-free call.Lcd screen is the dot matrix screen, links to each other with microcontroller by the I/O mouth, can send to the information that will show on the screen by micro controller I/O mouth to show.Loud speaker is by linking to each other with microcontroller I/O mouth, by sending the pulse sound prompting driver of caution.Power unit comprises battery, voltage conversion unit and vehicle power connection lead, and battery is as backup power, and it is system's power supply that voltage conversion unit is converted to 5V with the vehicle power of 24V.
Be illustrated in figure 2 as the workflow diagram of system's main program, mainly finish the initialization and the Decision Control function of equipment.Carry out the initialization of software and hardware and data after system powers on, start timer and begin to enter major cycle then.The renewal of danger coefficient and dangerous play can constantly be carried out and finally realize to two timers at interval, by the analysis to dangerous play and total danger coefficient, comes the realization of control decision part in main program.When the dangerous acceleration of each appearance, when quickening curved or improper sudden stop, system can control LCD and loud speaker sends warning signal, can analyze current dangerous play coefficient simultaneously, be accumulated in total danger coefficient, simultaneously total danger coefficient can be removed the danger coefficient that the dangerous play before 10 minutes produces.When drunken driving appears, when collide action and current total danger coefficient surpass 10, system can control gsm module and send the caution note toward the phone number of setting, remind them phone stops the driver, and note current system time, if have the number of setting to dial in phone in 15 minutes after at this moment, system also can the auto-pickup hand-free call.The information such as time that the dangerous play system also can note dangerous play data and generation automatically appear simultaneously at every turn.
Be illustrated in figure 3 as the timing interrupt function of image data, adopt timer, finish the filtering of data and new data more every 0.1 second collection primary transducer data.After timer started, this function can every operation in 0.1 second once promptly carry out the primary acceleration sensor data acquisition every 0.1 second.Simultaneously a parameter is carried out technology, after this record full 50 gathered the alcohol sensor data one time, promptly gathered alcohol sensor data every 5 seconds.The data of gathering at first can be carried out a filtering, filter some clutters and make curve smoothing.Data can deposit in the array afterwards, and replace the oldest data in the former array.
Be illustrated in figure 4 as the timing interrupt function of data handing, adopt timer to handle a secondary data and feedback dangerous play type and dangerous play data every 0.5 second.This function can carry out one time data handing every 0.5 second after timer starts, and realizes the analysis to two kinds of sensing datas, and feeds back to dangerous play type and dangerous play data, is used to the control partly of making a strategic decision.
The utility model is by the built-in acceleration pick-up alcohol sensor of device, obtain current acceleration/accel of automobile and indoor alcohol concentration in real time, by collection analysis and statistics to acceleration/accel, judge the dangerous play of automobile, and write down the danger coefficient of this dangerous play, alcohol concentration is then as an important parameter judging drunken driving, the decision-making part can be controlled alarm function according to dangerous play type and total danger coefficient after the hazard recognition action, send information warning or GSM transmission caution note as loud speaker, LCD, realize prevention dangerous driving.For example alcohol concentration is higher behind automobile starting, then reminds the driver carefully to drive by loud speaker and lcd screen; If within a certain period of time, dangerous play surpasses certain time or the danger coefficient accumulation surpasses certain value, then once more by LCD and loud speaker warning driver, and remind them the driver just please stop in dangerous driving for driver's transmission notes such as household (can import the people's that these can the active constraint driver phone number in the program in advance) by gsm module, this moment, the household can directly dial the number of this device, device can be connected hands-free phone automatically in effective time, allows them stop the driver to continue to drive by voice dialogue.
Native system is by collection and record to sensing data, and analyze acceleration information in 20 seconds and the alcohol sensor data in 1 minute, realization is discerned multiple dangerous play, comprising: drunken driving, dangerous acceleration, acceleration turning, improper sudden stop and car accident.Below provide a specific embodiment.
Adopt MXC62020M two axle acceleration sensors of U.S. new company and the MQ303A alcohol sensor of the suitable electronics scientific technology co of sky.The measurement range of MXC62020M for ± 2G(G is an acceleration due to gravity), resolution is 4096count, diaxon is output as 2048count when static.The recommendation measurement range of MQ303A is 20-1000ppm.By repeatedly measurement, analysis and the optimization on small passenger car, now can more accurately discern five kinds of dangerous plays, concrete RM is as follows:
1. drunken driving is meant that the driver drives a car after drinking, driver's breathing can be taken ethanol molecule out of during drunken driving, the alcohol concentration that causes the air in the car increases, and can cause the increase of dangerous play because the driver that causes of drinking is clouding of consciousness, reaction is slack-off etc. in addition.For accurate identification drunken driving, need to satisfy two conditions: the one, the average alcohol concentration in the car in the air 1 minute surpasses threshold value 200ppm, and simultaneously total dangerous play coefficient surpasses 5.The system that is judged as behind the drunken driving directly sends reminding short message and goes out.
2. dangerous acceleration is meant that in the accelerator of once shifting gears its average acceleration (aviation value of acceleration/accel in the gearshift accelerator) and acceleration peak value substantially exceed normal value, often appear in furious driving and the drunken driving.Its RM is: the average acceleration in accelerator surpasses threshold value 0.35G, and promptly average output surpasses 2406count, surpasses 0.4G with the peak value of brief acceleration, i.e. acceleration pick-up output peak value surpasses 2458count.The root acceleration peak value surpasses the amount of threshold value and determines its high, normal, basic three kinds of danger coefficient grades, when peak value during between 0.4G to 0.45G danger coefficient be recorded as 1, peak value coefficient when 0.45G to 0.5G is recorded as 2, coefficient was recorded as 3 when peak value surpassed 0.5G.
3. quickening turns is meant wide-angle steering wheel rotation under the situation of open the throttle wide, such as the open the throttle wide on the contrary that not only do not slow down when crossing bend, gets into an accident easily.Its recognition principle is: forward or in the accelerator backward, its average acceleration surpasses 0.2G, and promptly average output reaches 2253count, simultaneously laterally accelerator average acceleration surpass 0.5G, promptly average output reaches 2560count.Determine its danger coefficient according to its amount that surpasses the transverse acceleration threshold value, acceleration/accel danger coefficient between 0.4 to 0.6G the time is recorded as 1, and danger coefficient is 2 when 0.6G to 0.8G, is recorded as 3 when surpassing 0.8G.
4. improper sudden stop is meant that in brake, the aviation value of its acceleration/accel surpasses the value of normal braking, simultaneously should action in the peak value of acceleration/accel exhausted less than a preset threshold.Usually show in the dangerous drivings such as fatigue driving, drunken driving, joyride.Its identification mode is: the aviation value of its acceleration/accel is less than-0.6 G in brake process, the output aviation value that is acceleration pick-up is less than 1434count, its acceleration peak value is less than threshold value-0.85G simultaneously, i.e. acceleration pick-up output peak value is less than 1178count.The amount that is lower than threshold value according to its acceleration peak value is determined high, normal, basic three kinds of danger coefficients, when acceleration peak value between-0.9G during to-0.8G the record danger coefficient be 1, when peak value greatly between-1G during to-0.9G the record danger coefficient be 2, the record danger coefficient is 3 when peak value is lower than 1G.
5. car accident is meant the situation that automobile bumps with other object under steam, and its instantaneous acceleration can become very big when bumping.The mode of identification collision is 4096count for the maximum measurement range the 2G whether peak value of measuring its acceleration/accel reaches sensor.Can directly send reminding short message after this action takes place goes out.
The decision-making part of microcontroller: the radical function of decision-making part be under the prerequisite of identification maneuver, danger coefficient add up, and decide according to dangerous play type, total danger coefficient and to take which kind of prompting to move.Main implementation is as follows:
1. cause danger acceleration, quicken to turn, when improper brish acceleration and sudden stop, the danger coefficient of each action carried out record;
2. occur at every turn that dangerous play all can be sounded, the LCD display text carefully drives to remind the driver;
3. dangerous play data effective time is 10 minutes, and system can constantly deposit new dangerous play coefficient in, removes out-of-date dangerous play coefficient simultaneously, and calculates at present total danger coefficient;
4. when the action of collision and drunken driving takes place, directly send reminding short message;
5. judge whether danger coefficient reaches threshold value 10, if reach direct transmission reminding short message;
6. in the 15 minutes time after sending reminding short message, the phone that particular number is made is hands-free answering automatically.
Claims (4)
1. dangerous driving prevention device for automobiles comprises microcontroller, it is characterized in that: described microcontroller is connected with acceleration pick-up, and connects alcohol sensor by AD converter, and described microcontroller also is connected with gsm module, read-out and loud speaker.
2. dangerous driving prevention device for automobiles according to claim 1 is characterized in that described gsm module and sets mobile phone terminal and be connected by wireless network.
3. dangerous driving prevention device for automobiles according to claim 1 is characterized in that described microcontroller adopts micro controller system.
4. dangerous driving prevention device for automobiles according to claim 1 is characterized in that described microcontroller passes through I
2Total wire joint acceleration pick-up of C and AD converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205129919U CN201777186U (en) | 2010-08-31 | 2010-08-31 | Automobile dangerous-driving prevention device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205129919U CN201777186U (en) | 2010-08-31 | 2010-08-31 | Automobile dangerous-driving prevention device |
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| CN201777186U true CN201777186U (en) | 2011-03-30 |
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| CN2010205129919U Expired - Fee Related CN201777186U (en) | 2010-08-31 | 2010-08-31 | Automobile dangerous-driving prevention device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913339A (en) * | 2010-08-31 | 2010-12-15 | 江南大学 | Dangerous driving prevention device for automobiles |
| CN111114433A (en) * | 2020-01-10 | 2020-05-08 | 金龙联合汽车工业（苏州）有限公司 | Three-risk driving behavior monitoring and alarming system |
-
2010
- 2010-08-31 CN CN2010205129919U patent/CN201777186U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913339A (en) * | 2010-08-31 | 2010-12-15 | 江南大学 | Dangerous driving prevention device for automobiles |
| CN111114433A (en) * | 2020-01-10 | 2020-05-08 | 金龙联合汽车工业（苏州）有限公司 | Three-risk driving behavior monitoring and alarming system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110330 Termination date: 20130831 |