CN103863329A - Monitoring device and monitoring method for safe driving level of driver - Google Patents
Monitoring device and monitoring method for safe driving level of driver Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/08—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to drivers or passengers
- B60W40/09—Driving style or behaviour
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/08—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to drivers or passengers
- B60W2040/0818—Inactivity or incapacity of driver
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2420/00—Indexing codes relating to the type of sensors based on the principle of their operation
- B60W2420/40—Photo, light or radio wave sensitive means, e.g. infrared sensors
- B60W2420/408—Radar; Laser, e.g. lidar
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Abstract
The invention belongs to the technical field of driving behaviors and discloses a monitoring device and a monitoring method for a safe driving level of a driver. The monitoring device for the safe driving level of the driver comprises a vehicle, a signal processor, six indication lamps, six radar sensors positioned outside the vehicle and a vehicle speed sensor for acquiring the real-time speed of the vehicle, wherein the six radar sensors are respectively and fixedly arranged at the right front part, the right rear part, a front-left part, a rear-left part, front-right part and the rear-right part of the vehicle; the arraying shape of the six indication lamps is kept consistent with that of the radar sensors; each indication lamp is a three-color LED (Light Emitting Diode) capable of displaying red, yellow and green colors; the input end of the signal processor is respectively and electrically connected with the output ends of the six radar sensors and the output end of the vehicle speed sensor; the output end of the signal processor is respectively and electrically connected with the six indication lamps.
Description
Technical field
The invention belongs to driving behavior monitoring technical field, particularly a kind of driver safety driving ability monitoring device and monitoring method thereof.
Background technology
To the assessment of steerman safe driving level, conventionally whether there is traffic accident as basic performance assessment criteria taking this steerman.But concerning evaluator, traffic accident is small probability event after all, and sample size is limited.With respect to traffic accident, traffic conflict with large sample, fast, quantitative evaluation on traffic safety situation and improve the feature of effect and differ from traditional casualty statistics evaluation method.Traffic conflict is in fact the manifestation of dangerous traffic behavior, and its development may cause accident to occur, also may be because the proper accident of avoiding of taking measures occurs, thereby there is certain similar content with conflicting in accident.Accident exists very similar form with the origin cause of formation of conflicting to the final stage of generating process, and both only difference are whether direct injurious consequences has occurred.Accident and the conflict model set up from people such as U.S. W.D.Glouz, all kinds of conflicts and accident of the same type have good correlationship, and this relation can be described by replacement coefficient, is defined as the probability that once conflict causes accident to occur.Statistical research result shows: the probability that once conflict causes accident to occur is 0.00001, i.e. the average generation that leads to the accident that conflicts for 10000 times.Accident has higher confidence level with the replacement coefficient conflicting, and can be used as independently Traffic safety evaluation method and uses.
Traditional driving behavior safe evaluation method, in the time that two steermans all do not have accident record, thinks that the safe driving level of these two steermans is the same, cannot assess exactly the driving ability of steerman.
Summary of the invention
The object of the invention is to propose a kind of driver safety driving ability monitoring device and monitoring method thereof.This driver safety driving ability monitoring device investment cost is few, be applicable to large-scale promotion, and this driver safety driving ability monitoring method has intellectuality, automation, without operation and the high feature of reliability.
For realizing above-mentioned technical purpose, the present invention adopts following technical scheme to be achieved.
Technical scheme one:
A kind of driver safety driving ability monitoring device, comprise vehicle, signal processor, 6 indicator lamps, be positioned at 6 radar sensors of outside vehicle, car speed sensor for collection vehicle real-time speed, described 6 radar sensors are separately fixed at dead ahead, dead aft, left front, left back, right front and the right abaft of vehicle; The spread geometry of the spread geometry of described 6 indicator lamps and 6 radar sensors is consistent; Described each indicator lamp is the three-color LED light that can show the green three kinds of colors of reddish yellow;
The input end of described signal processor is electrically connected respectively the mouth of described 6 radar sensors and the mouth of car speed sensor, and the mouth of described signal processor is electrically connected respectively 6 indicator lamps.
The feature of the technical program and further improvement are:
Described 6 radar sensors are for the corresponding periphery object information that is positioned at vehicle dead ahead, dead aft, left front, left back, right front and right abaft that gathers; Described 6 indicator lamps are positioned at the periphery object information of vehicle dead ahead, dead aft, left front, left back, right front and right abaft for corresponding reflection; Described signal processor is for receiving the detection data of 6 radar sensors and the detection data of car speed sensor, for according to the detection data that receive, controls in real time the luminance of each indicator lamp and draws the safe driving level of chaufeur.
In described 6 radar sensors, the radar sensor that is positioned at vehicle dead ahead is fixed on the bumper/spoiler of vehicle front, and towards vehicle dead ahead; The radar sensor that is positioned at vehicle dead aft is fixed on the bumper/spoiler of rear view of vehicle, and towards vehicle dead aft; The radar sensor that is positioned at vehicle left front is fixed on the below of vehicle left front car light, and towards vehicle left front; The radar sensor that is positioned at vehicle left back is fixed on the below of vehicle left back car light, and towards vehicle left back; The radar sensor that is positioned at vehicle right front is fixed on the below of vehicle right front car light, and towards vehicle right front; The radar sensor that is positioned at vehicle right abaft is fixed on the below of vehicle right abaft car light, and towards vehicle right abaft.
Described radar sensor is millimeter wave radar sensor; Described signal processor is ARM11 treater.
Described a kind of driver safety driving ability monitoring device, also comprises can, and described can is arranged on operator's saddle below or front passenger's seat below, and described signal processor is positioned at described can;
In described can, be provided with button, described button is electrically connected the input end of described signal processor.
Described a kind of driver safety driving ability monitoring device, also comprises the base for fixing 6 indicator lamps, and described base sticks on meter panel of motor vehicle.
Technical scheme two:
A kind of driver safety driving ability monitoring method, based on above-mentioned a kind of driver safety driving ability monitoring device, comprises the following steps:
S1: the real-time vehicle speed data of car speed sensor collection, and the real-time vehicle speed data gathering is sent to signal processor; Distance between relative angle between relative velocity between periphery object corresponding to each radar sensor Real-time Collection and this vehicle, corresponding periphery object and this vehicle and corresponding periphery object and this vehicle; Described periphery object is other vehicles or obstacle; The data of Real-time Collection are sent to signal processor by each radar sensor;
S2: in signal processor, while determining that according to following formula early warning when conflict conflicts with danger apart from T apart from T
b:
T=0.99+0.14v
0/φ
Wherein, v
0for the real-time speed of a motor vehicle,
for the adhesion value between tire and the road surface set;
The data that signal processor sends according to each radar sensor, while judge early warning conflict during apart from T, dangerous conflict apart from T
b, and corresponding real-time thing spacing between magnitude relationship; The real-time thing spacing of described correspondence refers to: the real-time distance between corresponding periphery object and this vehicle; If, apart from T, indicator lamp corresponding to signal processor control sends green glow when corresponding real-time thing spacing is greater than early warning conflict; When if corresponding real-time thing spacing is positioned at early warning conflict during apart from T and dangerous conflict apart from T
bbetween, signal processor sends gold-tinted energizing signal to corresponding indicator lamp, controls corresponding indicator lamp and sends gold-tinted; When if corresponding real-time thing spacing is less than dangerous conflict apart from T
b, signal processor sends ruddiness energizing signal to corresponding indicator lamp, controls corresponding indicator lamp and sends ruddiness;
S3: signal processor detects driver safety driving ability within the assessment phase, the assessment phase is set in advance in signal processor; Signal processor detects and comprises the following steps driver safety driving ability within the assessment phase: the real-time speed of signal processor vehicle when each indicator lamp sends the number of times of gold-tinted in Vehicle Driving Cycle distance, assessment phase in the assessment phase, in the assessment phase, arbitrary indicator lamp sends gold-tinted, determine the safe driving level of chaufeur.
The feature of the technical program and further improvement are:
In step S3, determine the safe driving level of chaufeur according to following formula:
Wherein, DSL is the horizontal score value of the safe driving of chaufeur within the assessment phase, d
mfor Vehicle Driving Cycle distance in the assessment phase, v
ithe real-time speed of vehicle while outwards exporting gold-tinted energizing signal the i time for signal processor in the assessment phase, i gets 1 to Y, and Y is the number of times that in the assessment phase, signal processor is outwards exported gold-tinted energizing signal; v
jthe real-time speed of vehicle while outwards exporting ruddiness energizing signal the j time for signal processor in the assessment phase, j gets 1 to R, and R is the number of times that in the assessment phase, signal processor is outwards exported ruddiness energizing signal; k
1for the early warning conflict coefficient of setting, k
2for the dangerous conflict coefficient of setting.
After step S3, signal processor, in the time of each outwards output gold-tinted energizing signal or ruddiness energizing signal, according to corresponding radar sensor position, judges conflict direction; Then according to the real time data from corresponding radar sensor of conflict direction and reception, the unsafe driving behavior of chaufeur is sorted out.
Beneficial effect of the present invention is: driver safety driving ability monitoring device of the present invention, and major part adopts radar sensor and signal processor, and investment cost is few, simplicity of design, reliability is high, and it is convenient to install.Driver safety driving ability monitoring method of the present invention, when its conflict, directly completed by radar sensor and signal processor apart from the collection of information and the analytical calculation of conflict hazard level, intelligent degree is high, the assessment to steerman safe driving level and unreasonable driving behavior to improve effect directly perceived, reliable.
Brief description of the drawings
Fig. 1 is the arrangement schematic diagram of the radar sensor of a kind of driver safety driving ability monitoring device of the present invention;
Fig. 2 is the schematic diagram that is electrically connected of the embodiment of the present invention;
Fig. 3 is that the indicator lamp of the embodiment of the present invention is arranged schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described:
A kind of driver safety driving ability monitoring device of the present invention, comprises vehicle, has 6 radar sensors in the external stability of vehicle; With reference to Fig. 1, it is the arrangement schematic diagram of the radar sensor of a kind of driver safety driving ability monitoring device of the present invention.These 6 radar sensors are separately fixed at dead ahead, dead aft, left front, left back, right front and the right abaft of vehicle, 6 radar sensors are for the corresponding periphery object information that is positioned at vehicle dead ahead, dead aft, left front, left back, right front and right abaft that gathers, and periphery object refers to be positioned at vehicle or the obstacle of this vehicle-surroundings.Radar sensor is because detection range is long, and resolution is high, and response time is fast, compatible with environment and penetrating capacity are strong, hardware price, with respect to advantages such as video system are low, is widely used in measuring object speed and sense of motion in field of traffic, is applicable to carrying out large-scale promotion use.
In above-mentioned 6 radar sensors, the radar sensor that is positioned at vehicle dead ahead is fixed on the bumper/spoiler of vehicle front, or is fixed on the side of vehicle front licence plate, is positioned at the radar sensor in vehicle dead ahead towards vehicle dead ahead; The radar sensor that is positioned at vehicle dead aft is fixed on the bumper/spoiler of rear view of vehicle, or is fixed on the side of rear view of vehicle licence plate, is positioned at the radar sensor in vehicle dead aft towards vehicle dead aft; The radar sensor that is positioned at vehicle left front is fixed on the below of vehicle left front car light, and towards vehicle left front; The radar sensor that is positioned at vehicle left back is fixed on the below of vehicle left back car light, and towards vehicle left back; The radar sensor that is positioned at vehicle right front is fixed on the below of vehicle right front car light, and towards vehicle right front; The radar sensor that is positioned at vehicle right abaft is fixed on the below of vehicle right abaft car light, and towards vehicle right abaft.Due in 6 radar sensors, there are 4 radar sensors to be positioned at four jiaos of vehicle, 2 radar sensors are positioned at dead ahead and the dead aft of vehicle, and therefore 6 radar sensors can be used for demarcating vehicle exterior contour.In conjunction with Fig. 1, as preferred a kind of mode, be positioned at vehicle four radar sensors of four jiaos towards being all 30 degree angles with vehicle y direction, the periphery object information of collection vehicle better.In the embodiment of the present invention, between radar sensor and vehicle, adopt bolt and wire loop to be fixed.
In the embodiment of the present invention, each radar sensor adopts millimeter wave radar sensor, and its concrete model is IPS-144.The detection range of the millimeter wave radar sensor of this model determines by beam width and receiver sensitivity, and its maximum detectable range is more than or equal to 150m, and resolution is 10mm, and directivity minimum is 2.0 °, and response time is 1ms.It,, to the strong adaptability under the mal-condition such as temperature, humidity, sensor be dirty, has stronger bite.In the embodiment of the present invention, in the transmission case of vehicle, be provided with the car speed sensor for gathering the real-time speed of a motor vehicle.
In the embodiment of the present invention, be also provided with signal processor and 6 signal lamps in vehicle, signal processor is encapsulated in can, and this can is arranged on operator's saddle or front passenger's seat below.With reference to Fig. 2, it is the schematic diagram that is electrically connected of the embodiment of the present invention.In above-mentioned can, be provided with three buttons, each button is electrically connected the input end of above-mentioned signal processor.Signal processor is electrically connected with outside electronic component by wire.The input end of above-mentioned signal processor is electrically connected respectively the mouth of above-mentioned 6 radar sensors and the mouth of car speed sensor, for example, signal processor is ARM11 treater, signal processor is by the mouth of vehicle-mounted CAN bus electrical connection car speed sensor, and signal transducer is electrically connected the mouth of above-mentioned 6 radar sensors by I/O interface.Signal processor is for receiving the real time running speed of vehicle and the data from radar sensor, for analyzing the safe driving level that draws chaufeur.
Above-mentioned each indicator lamp is the three-color LED light that can show the green three kinds of colors of reddish yellow, with reference to Fig. 3, for the indicator lamp of the embodiment of the present invention is arranged schematic diagram.Above-mentioned 6 indicator lamps are fixed on the top of a base, and above-mentioned base sticks on meter panel of motor vehicle.Within base can also be arranged on vision field of driver, in order to bring into play maximum effect, it need to be placed on the place that chaufeur is easily noticed, but it is too many to depart from chaufeur normal line of sight, otherwise chaufeur can feel to pay particular attention to the state of ability observation signal lamp, has influence on normal driving behavior.
The spread geometry of the spread geometry of above-mentioned 6 indicator lamps and 6 radar sensors is consistent, and each indicator lamp is used for the detection data of the radar sensor that reflects correspondence position.The mouth of above-mentioned signal processor is electrically connected respectively 6 indicator lamps, and signal processor, for according to the data that receive, is controlled corresponding indicator lamp and sent green glow, gold-tinted and ruddiness.Wherein, indicator lamp sends green glow and shows driving behavior safety, and indicator lamp sends gold-tinted and shows that steerman does not perceive danger in time, and indicator lamp sends ruddiness and shows that dangerous situation occurs but steerman is not taked hedging measure in time.
In the embodiment of the present invention, the mouth of signal processor is also electrically connected with acoustic control annunciator, and acoustic control annunciator presents as the base form of indicator lamp.
A kind of driver safety driving ability monitoring method of the present invention, based on above-mentioned driver safety driving ability monitoring device, comprises the following steps:
S1: the real-time vehicle speed data of car speed sensor collection, and the real-time vehicle speed data gathering is sent to signal processor; Distance between relative angle between relative velocity between periphery object corresponding to each radar sensor Real-time Collection and this vehicle, corresponding periphery object and this vehicle and corresponding periphery object and this vehicle; Above-mentioned periphery object is other vehicles or obstacle; The data of Real-time Collection are sent to signal processor by each radar sensor.
S2: distance when distance is conflicted with danger while determining early warning conflict.Be described as follows:
Early warning when conflict apart from be steerman from perception danger to stopping-down, the time that vehicle distances conflict point or collision point experience.When dangerous conflict, extremely stop completely apart from start to depress brake pedal for steerman, the time that vehicle distances conflict point or collision point experience.
In signal processor, while determining that according to following formula early warning when conflict conflicts with danger apart from T apart from T
b:
T=0.99+0.14v
0/φ
Wherein, v
0for the real-time speed of a motor vehicle,
for the adhesion value between tire and the road surface set;
In different weather situation, tire is different from the adhesion value on road surface, for this reason, needs to arrange the adhesion value of tire and road surface under different situations in signal processor.In embodiments of the present invention, corresponding fine day, rainy day, the ice and snow respectively of three buttons in can; Signal processor is electrically connected respectively this three buttons by different interfaces.Before Vehicle Driving Cycle, according to real-time weather condition, press one of them button, button is by interface corresponding to signal processor to signal processor transmitted signal, and signal processor arranges corresponding tire and the adhesion value on road surface according to the interface that receives signal.For example, during by fine day, the adhesion value on tire and road surface is made as 0.58, and when the rainy day, the adhesion value on tire and road surface is made as 0.41, and when ice and snow, the adhesion value on tire and road surface is made as 0.20.Except button, the embodiment of the present invention can also directly send by keyboard or touch-screen the adhesion value of tire and road surface under corresponding weather condition to signal processor.
The data that signal processor sends according to each radar sensor, while judge early warning conflict during apart from T, dangerous conflict apart from T
b, and corresponding real-time thing spacing between magnitude relationship; The real-time thing spacing of above-mentioned correspondence refers to: the real-time distance between corresponding periphery object and this vehicle; If, apart from T, indicator lamp corresponding to signal processor control sends green glow when corresponding real-time thing spacing is greater than early warning conflict; When if corresponding real-time thing spacing is positioned at early warning conflict during apart from T and dangerous conflict apart from T
bbetween, signal processor sends gold-tinted energizing signal to corresponding indicator lamp, controls corresponding indicator lamp and sends gold-tinted; When if corresponding real-time thing spacing is less than dangerous conflict apart from T
b, signal processor sends ruddiness energizing signal to corresponding indicator lamp, controls corresponding indicator lamp and sends ruddiness.Be illustrated below: if signal processor draws by the radar sensor judgement that is positioned at vehicle left front: while conflict apart from T and danger when the real-time thing spacing of vehicle left front (distance between periphery object and this car) is positioned at early warning and conflict apart from T
bbetween, in 6 indicator lamps of signal processor control, the indicator lamp in the upper left corner sends gold-tinted.If signal processor draws by the radar sensor judgement that is positioned at vehicle dead aft: when the real-time thing spacing in vehicle dead aft (distance between periphery object and this car) is less than danger and conflicts apart from T
bbetween, the indicator lamp under in 6 indicator lamps of signal processor control sends ruddiness.
S3: the safe driving level of determining chaufeur.Be described as follows:
The height of driver safety driving ability, be embodied in steerman in driving procedure, the quantity of being conflicted and conflicting, steerman is not recognized or is perceived corresponding danger, or taked irrational driving behavior, thereby the danger that causes vehicle to clash or to collide.The quantity that unit travelled distance is conflicted and conflicts is more, the order of severity higher (number of times of indicator lamp Yellow light-emitting low temperature, ruddiness) of conflict, when conflict, the speed of vehicle is faster, show that the probability that driving behavior causes the accident is higher, the damage sequence causing is more serious, assesses the safe driving level of steerman with this.
In the embodiment of the present invention, in the time need to determining the safe driving level of chaufeur, signal processor detects driver safety driving ability within the assessment phase, and the assessment phase is set in advance in signal processor.Signal processor detects and comprises the following steps driver safety driving ability within the assessment phase: the real-time speed of signal processor vehicle when each indicator lamp sends the number of times of gold-tinted in Vehicle Driving Cycle distance, assessment phase in the assessment phase, in the assessment phase, arbitrary indicator lamp sends gold-tinted, determine the safe driving level of chaufeur.For example, determine the safe driving level of chaufeur according to following formula:
Wherein, DSL is the horizontal score value of the safe driving of chaufeur within the assessment phase, d
mfor example, for Vehicle Driving Cycle distance (100 kilometers) in the assessment phase, v
ithe real-time speed of vehicle while outwards exporting gold-tinted energizing signal the i time for signal processor in the assessment phase, unit is m/s, and i gets 1 to Y, and Y is the number of times that in the assessment phase, signal processor is outwards exported gold-tinted energizing signal; v
jthe real-time speed of vehicle while outwards exporting ruddiness energizing signal the j time for signal processor in the assessment phase, unit is m/s, and j gets 1 to R, and R is the number of times that in the assessment phase, signal processor is outwards exported ruddiness energizing signal; k
1for example, for the early warning conflict coefficient (getting 3) of setting, k
2for example, for the dangerous conflict coefficient (getting 7) of setting.
S4: the classification analysis of unsafe driving behavior.Be described as follows:
Signal processor, in the time of each outwards output gold-tinted energizing signal or ruddiness energizing signal, according to corresponding radar sensor position, judges conflict direction; Then according to the real time data from corresponding radar sensor of conflict direction and reception, the unsafe driving behavior of chaufeur is sorted out.Table 1 has illustrated the classification situation of the unsafe driving behavior of chaufeur, in table 1, is: 1,2,3,4,5 and 6 by 6 radar sensor correspondence markings of the left front, dead ahead, right front, right abaft, dead aft and the left back that are fixed on vehicle.
Table 1
In sum, groundwork of the present invention is to demarcate the external profile of vehicle and gather vehicle and distance that periphery object is potential by being arranged on 6 radar sensors on vehicle, then by the data transmission gathering to signal processor.Signal processor utilizes handler, by identification obtain conflict from which direction and with set conflict time compare apart from (when early warning when conflict distance and dangerous conflict apart from), and provide corresponding signal and show.After driving task finishes, signal processor is according to number of times, the order of severity, conflict speed and the travelled distance of conflict, and the driving safety level of automatic evaluation steerman obtains score value, and analyzes unreasonable driving behavior and the improvement measure of steerman.
The present invention uses the method for traffic conflict to assess two steermans, even if there is not traffic accident in two people within a certain examination cycle, the quantity of traffic conflict and the order of severity of conflict that also can occur according to steerman, can assess the probability that steerman has an accident, the method can be assessed the difference of steerman safe driving level effectively, and can, according to the recurrent conflict source direction of steerman, targetedly the unreasonable driving behavior of steerman be continued to improve.
In the embodiment of the present invention, the time of distance conflict (distance when conflict) can be reacted the criticality of steerman apart from conflict or accident effectively.By when conflict when being divided into early warning conflict apart from (potential conflict danger occurs to the elapsed-time standards of conflict point) distance during with dangerous conflict (brake or turn to the elapsed-time standards of hedging behavior to conflict point).Every external profile of vehicle that enters for the moment in scope, all means that vehicle may suffer potential traffic conflict or accident.Radar sensor can effectively be realized the collection of the information such as the distance, speed, direction of vehicle and nearby vehicle and obstacle, thus distance while obtaining conflict.
It should be noted that, the present invention is different from automobile travel recorder and automobile black box, the digital electronic recording device for other status informations of Vehicle Speed, time, mileage and relevant Vehicle Driving Cycle are recorded, stored and can export by Interface realization data of automobile travel recorder and automobile black box, for auxiliary accident analysis after having an accident, belong to afterwards and control more.And content of the present invention more lays particular emphasis on prevention of accident and driving behavior safety assessment, be that the useful of automobile travel recorder and automobile black box function supplemented, have broad application prospects for improving the intellectuality of vehicle and the improvement of unsafe driving behavior.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (8)
1. a driver safety driving ability monitoring device, it is characterized in that, comprise vehicle, signal processor, 6 indicator lamps, be positioned at 6 radar sensors of outside vehicle, car speed sensor for collection vehicle real-time speed, described 6 radar sensors are separately fixed at dead ahead, dead aft, left front, left back, right front and the right abaft of vehicle; The spread geometry of the spread geometry of described 6 indicator lamps and 6 radar sensors is consistent; Described each indicator lamp is the three-color LED light that can show the green three kinds of colors of reddish yellow;
The input end of described signal processor is electrically connected respectively the mouth of described 6 radar sensors and the mouth of car speed sensor, and the mouth of described signal processor is electrically connected respectively 6 indicator lamps.
2. a kind of driver safety driving ability monitoring device as claimed in claim 1, is characterized in that, in described 6 radar sensors, the radar sensor that is positioned at vehicle dead ahead is fixed on the bumper/spoiler of vehicle front, and towards vehicle dead ahead; The radar sensor that is positioned at vehicle dead aft is fixed on the bumper/spoiler of rear view of vehicle, and towards vehicle dead aft; The radar sensor that is positioned at vehicle left front is fixed on the below of vehicle left front car light, and towards vehicle left front; The radar sensor that is positioned at vehicle left back is fixed on the below of vehicle left back car light, and towards vehicle left back; The radar sensor that is positioned at vehicle right front is fixed on the below of vehicle right front car light, and towards vehicle right front; The radar sensor that is positioned at vehicle right abaft is fixed on the below of vehicle right abaft car light, and towards vehicle right abaft.
3. a kind of driver safety driving ability monitoring device as claimed in claim 1, is characterized in that, described radar sensor is millimeter wave radar sensor; Described signal processor is ARM11 treater.
4. a kind of driver safety driving ability monitoring device as claimed in claim 1, is characterized in that, also comprises can, and described can is arranged on operator's saddle below or front passenger's seat below, and described signal processor is positioned at described can;
In described can, be provided with button, described button is electrically connected the input end of described signal processor.
5. a kind of driver safety driving ability monitoring device as claimed in claim 1, is characterized in that, also comprise the base for fixing 6 indicator lamps, described base sticks on meter panel of motor vehicle.
6. a driver safety driving ability monitoring method, based on a kind of driver safety driving ability monitoring device claimed in claim 1, is characterized in that, comprises the following steps:
S1: the real-time vehicle speed data of car speed sensor collection, and the real-time vehicle speed data gathering is sent to signal processor; Distance between relative angle between relative velocity between periphery object corresponding to each radar sensor Real-time Collection and this vehicle, corresponding periphery object and this vehicle and corresponding periphery object and this vehicle; Described periphery object is other vehicles or obstacle; The data of Real-time Collection are sent to signal processor by each radar sensor;
S2: in signal processor, while determining that according to following formula early warning when conflict conflicts with danger apart from T apart from T
b:
T=0.99+0.14v
0/φ
Wherein, v
0for the real-time speed of a motor vehicle,
for the adhesion value between tire and the road surface set;
The data that signal processor sends according to each radar sensor, while judge early warning conflict during apart from T, dangerous conflict apart from T
b, and corresponding real-time thing spacing between magnitude relationship; The real-time thing spacing of described correspondence refers to: the real-time distance between corresponding periphery object and this vehicle; If, apart from T, indicator lamp corresponding to signal processor control sends green glow when corresponding real-time thing spacing is greater than early warning conflict; When if corresponding real-time thing spacing is positioned at early warning conflict during apart from T and dangerous conflict apart from T
bbetween, signal processor sends gold-tinted energizing signal to corresponding indicator lamp, controls corresponding indicator lamp and sends gold-tinted; When if corresponding real-time thing spacing is less than dangerous conflict apart from T
b, signal processor sends ruddiness energizing signal to corresponding indicator lamp, controls corresponding indicator lamp and sends ruddiness;
S3: signal processor detects driver safety driving ability within the assessment phase, the assessment phase is set in advance in signal processor; Signal processor detects and comprises the following steps driver safety driving ability within the assessment phase: the real-time speed of signal processor vehicle when each indicator lamp sends the number of times of gold-tinted in Vehicle Driving Cycle distance, assessment phase in the assessment phase, in the assessment phase, arbitrary indicator lamp sends gold-tinted, determine the safe driving level of chaufeur.
7. a kind of driver safety driving ability monitoring method as claimed in claim 6, is characterized in that, in step S3, determines the safe driving level of chaufeur according to following formula:
Wherein, DSL is the horizontal score value of the safe driving of chaufeur within the assessment phase, d
mfor Vehicle Driving Cycle distance in the assessment phase, v
ithe real-time speed of vehicle while outwards exporting gold-tinted energizing signal the i time for signal processor in the assessment phase, i gets 1 to Y, and Y is the number of times that in the assessment phase, signal processor is outwards exported gold-tinted energizing signal; v
jthe real-time speed of vehicle while outwards exporting ruddiness energizing signal the j time for signal processor in the assessment phase, j gets 1 to R, and R is the number of times that in the assessment phase, signal processor is outwards exported ruddiness energizing signal; k
1for the early warning conflict coefficient of setting, k
2for the dangerous conflict coefficient of setting.
8. a kind of driver safety driving ability monitoring method as claimed in claim 6, it is characterized in that, after step S3, signal processor is in the time of each outwards output gold-tinted energizing signal or ruddiness energizing signal, according to corresponding radar sensor position, judgement conflict direction; Then according to the real time data from corresponding radar sensor of conflict direction and reception, the unsafe driving behavior of chaufeur is sorted out.
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| CN201410067315.8A CN103863329B (en) | 2014-02-26 | A kind of driver safety driving ability monitoring device and monitoring method thereof |
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| CN201410067315.8A CN103863329B (en) | 2014-02-26 | A kind of driver safety driving ability monitoring device and monitoring method thereof |
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