CN104766445A - Vehicle-mounted early warning, warning and distress system - Google Patents

Vehicle-mounted early warning, warning and distress system Download PDF

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Publication number
CN104766445A
CN104766445A CN201510198120.1A CN201510198120A CN104766445A CN 104766445 A CN104766445 A CN 104766445A CN 201510198120 A CN201510198120 A CN 201510198120A CN 104766445 A CN104766445 A CN 104766445A
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vehicle
warning
control unit
micro
acceleration
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王志良
张佳伟
蔺云雷
何小鹏
油晓峰
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University of Science and Technology Beijing USTB
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University of Science and Technology Beijing USTB
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Abstract

The invention belongs to the technical field of traffic safety, in particular to a vehicle-mounted early warning, warning and distress system. The system comprises multiple vehicle-mounted single units which are arranged on different vehicles, each vehicle-mounted single unit comprises a micro control unit, an acceleration sensor module, a wireless communication module, a GPS module, a GSM communication module, an indicator light and a buzzer, and the acceleration sensor modules, the wireless communication modules, the GPS modules, the GSM communication modules, the indicator lights and the buzzers are connected to the micro control units. According to the vehicle-mounted early warning, warning and distress system, the occurrence of a traffic accident can be judged rapidly, warning is conducted on other vehicles which are located in a 300-meter radius of a traffic accident vehicle, vehicle owners are reminded to be on the alert and slow down, and the occurrence of secondary accidents is avoided; the function of sending a distress signal after the traffic accident is achieved, and when the accident occurs in a sparsely populated section, injuries and deaths of wounded personnel who are not rescued in time can be effectively prevented.

Description

A kind of vehicle-mounted early warning, warning and distress system
Technical field
The invention belongs to traffic safety technology field, be specifically related to a kind of vehicle-mounted early warning, warning and distress system.
Background technology
According to statistics, China's automobile pollution is less than the whole world 2%, but the average annual toll on traffic of China is about 100,000 people, accounts for 20% of global traffic death by accident sum.
For many years, because China's automobile pollution increases swift and violent, so annual toll on traffic always constantly creates new peak.According to the statistical figure of the Ministry of Public Security, 2002, China ten thousand car death toll was 13.7 people; And according to Nissan Motor technician introduction, this numeral is more than 10 times of Japan.At present, China's vehicle guaranteeding organic quantity reaches 2.64 hundred million, wherein 1.54 hundred million, automobile; Vehicle driver breaks through 300,000,000 people, and wherein motorist is more than 2.46 hundred million people.According to hygiene department's statistics, the death toll caused because of traffic hazard by 2012 has reached 160,000 people.
Chinese transportation death tolls remains high, and reason is numerous.The participant of " 2005 automotive safety forum " discusses and thinks its main cause: one is domestic chaotic current situation of traffic, and be often abroad car to car impact, the probability of people is little, and domestic be often that car is thrusted into, the probability of people is much bigger; Two be state one skilled in the art, driver traffic safety consciousness generally thinner, voluntary observance traffic rules few; Three is that many home-made machine motor-cars exist gap with foreign vehicle in security performance; Four is that domestic a lot of driver does not form correct driving habits, does not have grasp accident that the correct method of operating in front and back occurs; Five is that domestic road-based infrastructure also has certain gap with developed country in design planning.
Also a few money is had to be applied to car collision avoidance System in the market, such as: the bodyguard that drives, Mobileye intelligent travelling crane early warning system etc.; Some high-end cars are also provided with collision avoidance system, as Volvo, benz etc.The principle of these systems is: utilize vehicle-mounted camera or mobile phone camera to obtain the image of front truck in driving conditions, and by the spacing of certain Algorithm Analysis Image estimation and preceding vehicle, the size according to spacing is warned driver further.
But these collision avoidance systems are all early warning before occurring based on traffic accident and warning, for the product that traffic accident early warning after the occurrence of the traffic accident and collision avoidance system are not similar at present.Native system can not only produce the safety coefficient that is weighed traffic safety situation before traffic accident occurs, for prompting, alerting drivers, and achieve after the occurrence of the traffic accident, can warn the vehicle of traffic accident periphery in time, prevent the generation of second accident, simultaneously to 120, programmed emergency etc. implements to call for help in time, prevent in meagrely-populated section because rescuing the injures and deaths brought not in time.
Summary of the invention
The invention provides a kind of vehicle-mounted early warning, warning and distress system key technical problem to be solved is, change traditional only occur based on traffic accident before alarm function, and the traffic accident warning before and after occurring for traffic accident and emergency function problem to be solved.
A kind of vehicle-mounted early warning, warning and distress system, described system comprises multiple vehicle-mounted monomer be separately positioned in different vehicle, described each vehicle-mounted monomer includes micro-control unit, acceleration sensor module, wireless communication module, GPS module, GSM communication module, pilot lamp and hummer, and described acceleration sensor module, wireless communication module, GPS module, GSM communication module, pilot lamp and hummer are all connected on described micro-control unit.
Further, it is characterized in that, described micro-control unit is STM32F103RCT6 micro-control unit.
Further, described acceleration sensor module is ADXL345 acceleration sensor module.
Further, described wireless communication module is 433MHz wireless communication module.
Further, described GPS module is NEO-6M GPS module.
Further, described GSM communication module is SIM900A GSM communication module.
A kind of vehicle-mounted warning system, apply above-mentioned system, comprise the following steps:
A) by ADXL345 acceleration sensor module, the three-dimensional acceleration in vehicle travel process is measured in real time, and three-dimensional acceleration information is transferred to micro-control unit;
B) when getting into an accident, micro-control unit is processed the three-dimensional acceleration information that acceleration module is measured by detection algorithm, judge whether vehicle gets into an accident, detection algorithm is: the threshold value setting acceleration, described threshold value is 10g, described g is acceleration of gravity, when the value that acceleration collects exceedes threshold value, thinks that this motor vehicle there occurs collision accident;
C) micro-control unit sends instruction to wireless communication module, and wireless communication module is immediately to the caution signal being equipped with the vehicle transmit band verification of described vehicle-mounted monomer in circumference 500 meters;
D) after the wireless communication module in the vehicle-mounted monomer on normal driving vehicle receives unknown signaling, micro-control unit carries out verification to this signal and judges, after receiving traffic accident caution signal, the flicker of micro-control unit controls warning lamp and buzzer warning, have traffic accident to occur to remind in time around the driver in normal driving vehicle.
A kind of vehicle-mounted distress system, apply above-mentioned system, comprise the following steps:
A) by ADXL345 acceleration sensor module, the three-dimensional acceleration in vehicle travel process is measured in real time, and three-dimensional acceleration information is transferred to micro-control unit;
B) when getting into an accident, micro-control unit is processed the three-dimensional acceleration information that acceleration module is measured by detection algorithm, judge whether vehicle gets into an accident, detection algorithm is: the threshold value setting acceleration, when the value that acceleration collects exceedes threshold value, described threshold value is 10g, and described g is acceleration of gravity, thinks that this motor vehicle there occurs collision accident;
C) micro-control unit obtains the geographical position coordinates value of the place where the accident occurred that GPS module collects, and sends communication instruction and coordinate data to communication module;
D) communication module to receive after communication instruction and data edit package voluntarily and, containing the emergency note of place where the accident occurred coordinate figure, sends to the contact person of setting in advance.
A kind of vehicle-mounted early warning system, apply above-mentioned system, comprise the following steps:
A) select acceleration, speed as input feature vector, select 100 neurons as hidden layer, a neuron, as output layer, forms three layers of neuroid of a 2-100-1 like this, for predicting driving danger or safety;
B) then use BP algorithm in Matlab development environment to 3000 sample training, obtain optimum model parameter;
C) then by this model programming realization in micro-control unit, by sensor acquisition speed, accekeration, produce a safety coefficient, coefficient is more high safer, and when coefficient step-down to a certain extent time, can send alarming sound remind driver slow down.
The beneficial effect that the present invention is compared to the prior art had is:
(1) the present invention is by judging the generation of traffic accident fast with the vehicle acceleration travelled in way;
(2) the present invention is directed to the traffic accident accident occurred to make a response, make warning to other vehicles in having an area of 300 meters around accident vehicle, remind car owner to enhance your vigilance, slow down, avoids the generation of second accident;
(3) the invention provides the function of automatic transmission distress signal after the occurrence of the traffic accident, can when effectively Accident prevention occur in meagrely-populated section, the wounded are because rescuing the injures and deaths brought not in time;
(4) the present invention uses the BP neural network algorithm in machine learning to produce the coefficient of a measurement traffic safety situation, and owing to being the principle of Corpus--based Method, compare with commending system or artificially arrange, this coefficient is more accurate.
Accompanying drawing explanation
Fig. 1 is the structural representation of the vehicle-mounted monomer of the present invention;
Fig. 2 is one-piece construction schematic diagram of the present invention;
Fig. 3 is the workflow diagram of the vehicle-mounted monomer transmitting terminal of the present invention;
Fig. 4 is the workflow diagram of the vehicle-mounted monomer receiving end of the present invention;
Number in the figure: 1-micro-control unit; 2-acceleration sensor module; 3-GPS module; 4-wireless communication module; 5-GSM communication module; 6-pilot lamp; 7-hummer.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is explained in further detail.Should be appreciated that specific embodiment described herein only for explaining the present invention, being not intended to limit the present invention.
On the contrary, the present invention is contained any by the substituting of making on marrow of the present invention and scope of defining of claim, amendment, equivalent method and scheme.Further, in order to make the public have a better understanding to the present invention, in hereafter details of the present invention being described, detailedly describe some specific detail sections.
As shown in Figure 1, the invention provides a kind of vehicle-mounted early warning, warning and distress system, comprise multiple vehicle-mounted monomer be separately positioned in different vehicle, described each vehicle-mounted monomer includes micro-control unit 1, acceleration sensor module 2, wireless communication module 4, GPS module 3, GSM communication module 5, pilot lamp 6 and hummer 7, and described acceleration sensor module 2, wireless communication module 4, GPS module 3, GSM communication module 5, pilot lamp 6 and hummer 7 are all connected on described micro-control unit 1;
Wherein, described micro-control unit 1 is specially STM32F103RCT6 micro-control unit, the running of STM32F103RCT6 micro-control unit controls whole system, described acceleration sensor module 2 is specially ADXL345 acceleration sensor module, acceleration information in ADXL345 acceleration sensor module collection vehicle driving process, and there is feedback threshold; Vehicle is when getting into an accident, and acceleration information can meet and exceed feedback threshold; Described wireless communication module 4 is specially 433MHz wireless communication module, and after traffic accident occurs, 433MHz wireless communication module is used for sending and receiving traffic accident caution signal; Described GPS module 3 is specially NEO-6M GPS module, and NEO-6M GPS module is used for positioning, and the locating information of acquisition is sent to STM32F103RCT6 micro-control unit; Described GSM communication module 5 is specially SIM900A GSM communication module, SIM900A GSM communication module is used for the emergency note to specifying contact method or contact person to send the coordinate information after with NEO-6M GPS module location, to realize timely calling function after the occurrence of the traffic accident.
Realize vehicle towards periphery and send the principle of work of warning message:
(1) hardware system is formed with STM32F103RCT6 micro-control unit, ADXL345 acceleration sensor module, 433MHz wireless communication module, pilot lamp and hummer.ADXL345 acceleration sensor module is connected with STM32F103RCT6 micro-control unit in IIC mode; 433MHz wireless communication module is connected with STM32F103RCT6 micro-control unit by serial ports; Pilot lamp is connected with STM32F103RCT6 micro-control unit by I/O mouth with hummer;
(2) by ADXL345 acceleration sensor module, the three-dimensional acceleration in vehicle travel process is measured in real time, and three-dimensional acceleration information is transferred to STM32F103RCT6 micro-control unit;
(3) when getting into an accident, STM32F103RCT6 micro-control unit is processed the three-dimensional acceleration information that ADXL345 acceleration module is measured by detection algorithm, judge whether vehicle gets into an accident, detection algorithm refers to: the threshold value setting acceleration, described threshold value is 10g, described g is acceleration of gravity, when the value that acceleration collects exceedes threshold value, thinks that this motor vehicle there occurs collision accident;
(4) STM32F103RCT6 micro-control unit sends instruction to 433MHz wireless communication module, and 433MHz wireless communication module is immediately to the caution signal that the vehicle transmit band of this vehicle-mounted monomer of equipment in circumference 500 meters verifies;
(5) after the 433MHz wireless communication module in the onboard system on normal driving vehicle receives unknown signaling, STM32F103RCT6 micro-control unit carries out verification to this signal and judges, after being judged to be traffic accident caution signal, the flicker of STM32F103RCT6 micro-control unit controls warning lamp and buzzer warning, traffic accident is had to occur to remind in time around the driver in normal driving vehicle, answer slow down, take care, namely realize traffic accident warning function.
Realize the principle of work of calling for help in time:
(1) hardware system is formed with STM32F103RCT6 micro-control unit, ADXL345 acceleration sensor module, NEO-6M GPS module and SIM900A GSM communication module.ADXL345 acceleration sensor module is connected with STM32F103RCT6 micro-control unit in IIC mode; NEO-6M GPS module is connected with STM32F103RCT6 micro-control unit by serial ports 2; SIM900A GSM communication module is connected with STM32F103RCT6 micro-control unit by serial ports 3;
(2) by ADXL345 acceleration sensor module, the three-dimensional acceleration in vehicle travel process is measured in real time, and three-dimensional acceleration information is transferred to STM32F103RCT6 micro-control unit;
(3) when getting into an accident, STM32F103RCT6 micro-control unit is processed the three-dimensional acceleration information that ADXL345 acceleration module is measured by detection algorithm, judge whether vehicle gets into an accident, detection algorithm refers to: the threshold value setting acceleration, when the value that acceleration collects exceedes threshold value, think that this motor vehicle there occurs collision accident;
(4) the place where the accident occurred coordinate figure of STM32F103RCT6 micro-control unit and collection NEO-6M GPS module location, and send communication instruction and coordinate data to SIM900A GSM communication module;
(5) SIM900A GSM communication module to receive after communication instruction and data module edit package voluntarily and, containing the emergency note of place where the accident occurred coordinate figure, sends to the contact person of setting in advance, namely realize calling function.
Realize the principle of work of early warning:
(1) select acceleration, speed as input feature vector, select 100 neurons as hidden layer, a neuron, as output layer, forms three layers of neuroid of a 2-100-1 like this, for predicting driving danger or safety;
(2) then use BP algorithm to 3000 sample training in Matlab development environment, the accuracy rate that after having trained, this model is predicted in 500 test sample books reaches 87.24%.
(3) then by this model programming realization in STM32F103RCT6, by sensor acquisition speed, accekeration, then a safety coefficient can just be produced.Coefficient is more high safer, and when coefficient step-down to a certain extent time, can send alarming sound remind driver slow down.
The common BP neural network algorithm of prior art has a common limitation: easily converge to local minimum.And in order to global minimum can be converged to, if local minimum and global minimum are close to little to impact in addition, if far short of what is expected, then directly cause the significantly decline of final accuracy rate.And to cause local minimum key factor to be neural network be manual construction, design how many layers, it is all artificially fixed that hidden layer arranges how many neuron numbers, such as devise the three-layer neural network of 10-100-4, middle hidden layer is provided with 100 neurons, but sometimes solve certain class problem do not need 100 so many, may 50 just much of that.In this case, many neurons are wastes, also may have a negative impact, and such as multiple neuron produces and done identical work, and this repetition just likely causes converging to local minimum.For this reason, the present invention constructs openness restriction on the basis of original BP algorithm, and model can be forced to use less neuron number to express input feature vector at the hidden layer of centre.For model above, although there are 100 neurons in middle layer, after adding openness restriction, the actual neuron number being in state of activation may shorten to 50, and remaining 50 are in holddown.The situation of local minimum can be eliminated like this, thus the accuracy rate that lift scheme is final.

Claims (9)

1. a vehicle-mounted early warning, warning and distress system, it is characterized in that, described system comprises multiple vehicle-mounted monomer be separately positioned in different vehicle, described each vehicle-mounted monomer includes micro-control unit, acceleration sensor module, wireless communication module, GPS module, GSM communication module, pilot lamp and hummer, and described acceleration sensor module, wireless communication module, GPS module, GSM communication module, pilot lamp and hummer are all connected on described micro-control unit.
2. the vehicle-mounted early warning of one according to claim 1, warning and distress system, is characterized in that, described micro-control unit is STM32F103RCT6 micro-control unit.
3. the vehicle-mounted early warning of one according to claim 1, warning and distress system, described acceleration sensor module is ADXL345 acceleration sensor module.
4. the vehicle-mounted early warning of one according to claim 1, warning and distress system, described wireless communication module is 433MHz wireless communication module.
5. the vehicle-mounted early warning of one according to claim 1, warning and distress system, described GPS module is NEO-6M GPS module.
6. the vehicle-mounted early warning of one according to claim 1, warning and distress system, described GSM communication module is SIM900A GSM communication module.
7. a vehicle-mounted warning system, the system that one of application the claims 1-6 is described, is characterized in that, comprise the following steps:
A) by ADXL345 acceleration sensor module, the three-dimensional acceleration in vehicle travel process is measured in real time, and three-dimensional acceleration information is transferred to micro-control unit;
B) when getting into an accident, micro-control unit is processed the three-dimensional acceleration information that acceleration module is measured by detection algorithm, judge whether vehicle gets into an accident, detection algorithm is: the threshold value setting acceleration, described threshold value is 10g, described g is acceleration of gravity, when the value that acceleration collects exceedes threshold value, thinks that this motor vehicle there occurs collision accident;
C) micro-control unit sends instruction to wireless communication module, and wireless communication module is immediately to the caution signal being equipped with the vehicle transmit band verification of described vehicle-mounted monomer in circumference 500 meters;
D) after the wireless communication module in the vehicle-mounted monomer on normal driving vehicle receives unknown signaling, micro-control unit carries out verification to this signal and judges, after receiving traffic accident caution signal, the flicker of micro-control unit controls warning lamp and buzzer warning, have traffic accident to occur to remind in time around the driver in normal driving vehicle.
8. a vehicle-mounted distress system, the system that one of application the claims 1-6 is described, is characterized in that, comprise the following steps:
A) by ADXL345 acceleration sensor module, the three-dimensional acceleration in vehicle travel process is measured in real time, and three-dimensional acceleration information is transferred to micro-control unit;
B) when getting into an accident, micro-control unit is processed the three-dimensional acceleration information that acceleration module is measured by detection algorithm, judge whether vehicle gets into an accident, detection algorithm is: the threshold value setting acceleration, when the value that acceleration collects exceedes threshold value, described threshold value is 10g, and described g is acceleration of gravity, thinks that this motor vehicle there occurs collision accident;
C) micro-control unit obtains the geographical position coordinates value of the place where the accident occurred that GPS module collects, and sends communication instruction and coordinate data to communication module;
D) communication module to receive after communication instruction and data edit package voluntarily and, containing the emergency note of place where the accident occurred coordinate figure, sends to the contact person of setting in advance.
9. a vehicle-mounted early warning system, the system that one of application the claims 1-6 is described, is characterized in that, comprise the following steps:
A) select acceleration, speed as input feature vector, select 100 neurons as hidden layer, a neuron, as output layer, forms three layers of neuroid of a 2-100-1 like this, for predicting driving danger or safety;
B) then use BP algorithm in Matlab development environment to 3000 sample training, obtain optimum model parameter;
C) then by this model programming realization in micro-control unit, by sensor acquisition speed, accekeration, a safety coefficient is produced, described safety coefficient is 0-100%, coefficient is more high safer, and when coefficient step-down to 60% time, can send alarming sound remind driver slow down.
CN201510198120.1A 2015-04-23 2015-04-23 Vehicle-mounted early warning, warning and distress system Pending CN104766445A (en)

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Cited By (9)

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CN105835774A (en) * 2016-06-08 2016-08-10 成都谷辘信息技术有限公司 Vehicle collision warning system based on GPS (Global Position System)
CN105922934A (en) * 2016-06-08 2016-09-07 成都谷辘信息技术有限公司 Vehicle anti-collision early-warning device based on GPS
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CN107215271A (en) * 2017-06-15 2017-09-29 赵珊 A kind of car collision avoidance System and method
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CN110572614A (en) * 2019-09-10 2019-12-13 深圳市艾赛泰克科技有限公司 Streaming media driving monitoring system
CN110745206A (en) * 2019-10-14 2020-02-04 深圳市班玛智行科技有限公司 Intelligent scooter capable of automatically calling for help in emergency and emergency calling for help method
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CN112396806A (en) * 2020-10-30 2021-02-23 深圳市有方科技股份有限公司 Vehicle-mounted terminal, early warning monitoring system and early warning monitoring method

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CN105946706A (en) * 2016-05-18 2016-09-21 胡达广 Wireless automobile warning device
CN105835774A (en) * 2016-06-08 2016-08-10 成都谷辘信息技术有限公司 Vehicle collision warning system based on GPS (Global Position System)
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CN111083667B (en) * 2019-12-31 2023-09-12 神龙汽车有限公司 Inter-vehicle network management system applied to automobile
CN112396806A (en) * 2020-10-30 2021-02-23 深圳市有方科技股份有限公司 Vehicle-mounted terminal, early warning monitoring system and early warning monitoring method

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Application publication date: 20150708