CN101916495A - Vehicle DAS (Driver Assistant System) and method - Google Patents
Vehicle DAS (Driver Assistant System) and method Download PDFInfo
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- CN101916495A CN101916495A CN 201010257260 CN201010257260A CN101916495A CN 101916495 A CN101916495 A CN 101916495A CN 201010257260 CN201010257260 CN 201010257260 CN 201010257260 A CN201010257260 A CN 201010257260A CN 101916495 A CN101916495 A CN 101916495A
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Abstract
The invention relates to vehicle DAS (Driver Assistant System) and method. The system comprises a vehicle-borne terminal and a monitoring platform. The method comprises the following steps of: firstly, periodically acquiring the latitude and longitude information of a vehicle with the vehicle-borne terminal according to the configuration of the monitoring platform and sending the latitude and longitude information of the vehicle to the monitoring platform by the vehicle terminal; then, calculating to acquire the continuous driving time of the vehicle and/or the offset distance of an offset preset line of the vehicle according to the latitude and longitude information of the vehicle by the monitoring platform and/or searching to acquire a parking lot spot for a driver to rest and sending an early warning command to the vehicle-borne terminal when early warning conditions are triggered by the vehicle; and finally, reminding the driver of fatigue driving in a voice or word mode and/or informing the driver of the parking lot address by the vehicle-borne terminal after receiving the early warning command of the monitoring platform. The invention not only can remind the driver of fatigue driving, but also can actively search a parking lot for the driver to rest, therefore the invention can be applied to the field of traffic systems.
Description
Technical field
The present invention relates to intelligent transportation system, relate in particular to vehicle drive assisting method.
Background technology
Along with economic level improves day by day, the use of automobile more and more widely, yet when being convenient for people to go on a journey, the traffic hazard that is produced is also more and more, is wherein caused by fatigue driving greatly.
Phenomenons such as fatigue driving is human highway killer always, and the driver blurred vision can occur when tired, action is stiff, trick is swollen, energy is unconcentrated, slow in reacting if still drive reluctantly this moment, just probably cause the generation of traffic hazard.
Show according to investigations, account for about 20% of total traffic hazard because of the traffic hazard that fatigue driving took place at present, in especially big traffic hazard, accounted for 40% ratio especially, traffic hazard not only can cause the fortune loss, go back entail dangers to people life security when serious, therefore how taking precautions against fatigue driving has become an important topic that reduces the Modern Traffic accident rate.
Summary of the invention
The invention provides a kind of vehicle DAS (Driver Assistant System) and method, solved the dangerous problem that driver tired driving brought.
In first aspect, the invention provides a kind of vehicle assistant drive method, this vehicle comprises car-mounted terminal, and this car-mounted terminal carries out information interaction by wireless network and monitor supervision platform.This vehicle assistant drive method may further comprise the steps:
At first, this car-mounted terminal is according to the latitude and longitude information of vehicle under the GPS position location satellite obtains this car-mounted terminal regularly that is provided with of this monitor supervision platform, and this vehicle latitude and longitude information is sent to this monitor supervision platform; Then, this monitor supervision platform calculates this vehicle according to this vehicle latitude and longitude information and continues the driving time, and/or the offset distance of this vehicle shift Preset Line, and/or search the stop that obtains for driver's rest, and when triggering early-warning conditions, this vehicle sends the early warning order to this car-mounted terminal; At last, this car-mounted terminal is reminded driver tired driving with voice or written form, and/or is informed driver's stop address after the early warning order that receives from this monitor supervision platform, stops rest for the driver.
In second aspect, the invention provides a kind of vehicle DAS (Driver Assistant System), this system comprises car-mounted terminal and monitor supervision platform, and this car-mounted terminal and this monitor supervision platform are by wireless mode interactive information.
This car-mounted terminal is used for the latitude and longitude information of vehicle under the GPS position location satellite obtains this car-mounted terminal regularly, and this vehicle latitude and longitude information is sent to this monitor supervision platform; And this car-mounted terminal also is used to receive the early warning order from this monitor supervision platform, and reminds driver tired driving based on this early warning order, and/or informs driver's stop address, stops rest for the driver.
This monitor supervision platform is used to calculate this vehicle and continues the driving time, and/or the offset distance of this vehicle shift Preset Line, and/or searches the stop that obtains for driver's rest, and sends the early warning order to described car-mounted terminal when this vehicle triggers early-warning conditions.
The present invention is by analyzing the data that the long-distance vehicular terminal is uploaded, and judges whether fatigue driving of driver, and searches the stop of plain its rest of confession for the driver.Therefore, the present invention not only can remind the driver to be in fatigue driving state, but also can therefore further reduce the harm that driver tired driving brings for it searches nearest stop when driver tired driving.
Description of drawings
Below with reference to accompanying drawings specific embodiments of the present invention is described in detail, in the accompanying drawings:
Fig. 1 is the vehicle DAS (Driver Assistant System) block diagram of one embodiment of the invention;
Fig. 2 is the vehicle assistant drive process flow diagram of one embodiment of the invention.
Embodiment
Fig. 1 is the vehicle DAS (Driver Assistant System) block diagram of one embodiment of the invention, and this vehicle backup system comprises monitor supervision platform 110 and car-mounted terminal 120.
Car-mounted terminal 120 is GPS car-mounted terminals, comprises information of vehicles acquisition module 121, alarm module 122 and prompting rest module 123.
Information of vehicles acquisition module 121 is used for the latitude and longitude information of vehicle under the GPS position location satellite obtains this car-mounted terminal 120 regularly, and this latitude and longitude information is sent to monitor supervision platform 110 wirelessly.
Prompting rest module 123 when driving fatigue appears in the driver, based on the stop that monitor supervision platform 110 searches, the prompting driver stop address nearest, and the prompting driver rest of getting off apart from this vehicle.Present embodiment indication stop is the stop place of having a rest for the driver, as highway rest service area etc.
Need to prove that alarm module 122, prompting rest module 123 also can adopt form realization prompting functions such as literal.In addition, alarm module 122 and prompting rest module 123 also can adopt same module, are that fatigue driving or prompting driver to stop have a rest by same module with different speech form prompting drivers as it.
Monitor supervision platform 110 comprises Registering modules 111, module 112 is set, fatigue driving detection module 113, stop search module 114 and database 115.
Registering modules 111 is used to register car-mounted terminal 120 affiliated vehicles.The correlation parameter that module 112 is used to dispose car-mounted terminal 120 is set, comprises the frequency, vehicle ' circuit of configuration fatigue driving parameter, car-mounted terminal image data etc.Fatigue driving detection module 113 is used to detect the driver and whether is in fatigue driving state, comprise the time, the route degrees of offset of steering vehicle, the speed of a motor vehicle size that detect the continuous steering vehicle of driver, and when detecting the driver and be in fatigue driving state, send the early warning order to car-mounted terminal 120 with wireless mode.Stop search module 114 adopts shortest path first to obtain from the nearest stop of vehicle, and this information is sent to car-mounted terminal 120 wirelessly.Database 115 is used to store parameter, intermediate data, result of calculation of setting etc.
Fig. 2 is the vehicle assistant drive process flow diagram of one embodiment of the invention.
In step 210, by vehicle under the monitor supervision platform 110 registration car-mounted terminals 120, so that this car-mounted terminal 120 can pass through the wireless mode interactive information with monitor supervision platform 110.
In step 220, by monitor supervision platform 110 correlation parameter of this car-mounted terminal 120 after the registration is set, comprise frequency, fatigue driving parameter and vehicle ' circuit that the car-mounted terminal image data is set.
Particularly, the frequency of car-mounted terminal image data is the frequency that car-mounted terminal is gathered vehicle latitude and longitude information under it, and promptly car-mounted terminal is gathered the once latitude and longitude information of this vehicle in how long.
The fatigue driving parameter is the duration of the continuous steering vehicle of driver, is fatigue driving in 3 hours as continuous driving.
In addition, because vehicles such as coach, post office delivery car, supermarket delivery car often vehicle line are fixed, therefore can the vehicle ' circuit be set by monitor supervision platform 110, whether depart from the route or travel by vehicle that presets in the process of moving so that judge vehicle.
In step 230, car-mounted terminal 120 is according to the latitude and longitude information of vehicles under the GPS position location satellite obtains this car-mounted terminal 120 regularly that is provided with of monitor supervision platform 110, and this vehicle latitude and longitude information is sent to monitor supervision platform 110.
The following stated step 241,242,243 does not have the sequencing relation, that is to say that present embodiment does not limit step 241,242,243 execution sequences.
In step 241, the vehicle latitude and longitude information that monitor supervision platform 110 receives from car-mounted terminal 120, and judge state of motion of vehicle according to the situation of change of this vehicle longitude and latitude, and then obtain this vehicle and drive the time continuously, if the driving time has surpassed the fatigue driving parameter that is provided with by monitor supervision platform 110 (as the fatigue driving parameter has been 3 hours this vehicle continuously, this vehicle is driven continuously above 3 hours), then monitor supervision platform 110 sends the early warning order to car-mounted terminal 120.
Further, monitor supervision platform 110 obtains this vehicle ' displacement according to current time vehicle latitude and longitude information and this vehicle latitude and longitude information of previous moment, and obtains this Vehicle Speed according to the surrounding time difference of this vehicle.Whether monitor supervision platform 110 can surpass the threshold speed of default by judging this Vehicle Speed, and then judge whether this vehicle exceeds the speed limit, when this overspeed of vehicle, monitor supervision platform 110 sends the early warning order to car-mounted terminal 120, drives over the speed limit with prompting driver vehicle.In addition, monitor supervision platform 110 also can judge whether the speed of a motor vehicle is stable by obtaining Vehicle Speed in real time, if speed of a motor vehicle shakiness then sends alarm command to car-mounted terminal 120.
In step 242, this vehicle latitude and longitude information that monitor supervision platform 110 collects according to car-mounted terminal 120, calculate the offset distance of this vehicle shift Preset Line, surpass under the offset distance threshold value situation of default, send the early warning order to car-mounted terminal 120 at this offset distance.
Particularly, monitor supervision platform 110 calculates the vertical range of this vehicle to Preset Line according to this vehicle latitude and longitude information, and this Preset Line is exactly the vehicle ' circuit that module 112 is set that is provided with by monitor supervision platform 110.When this vehicle to the vertical range of Preset Line during greater than the distance threshold of default, then this vehicle has departed from its predetermined vehicle line, and driver's fatigue driving probably is described, send the early warning order to car-mounted terminal 120 this moment.
In step 243, monitor supervision platform 110 calculates according to shortest path first and searches stop, and specific algorithm is as follows:
If the starting point of route or travel by vehicle is i, terminating point is j, and stop is k, and establishes total n stop k1, k2......kn from starting point i to terminating point j, and wherein, n is more than or equal to 0.
At first calculate from starting point i to terminating point j apart from d
I, j, and calculate from starting point i to stop k1 apart from d
I, k1And from stop k1 to terminating point j apart from d
K1, j
Judge d then
I, k1With d
K1, jSum and d
I, jBetween magnitude relationship, if d (i, k1)+d (k1, j)≤(i j), judges directly that then this stop k1 is current nearest stop to d; Otherwise continue to calculate from starting point i to another stop k2 apart from d
I, k2And from this stop k2 to terminating point j apart from d
K2, j
And then judgement d
I, k2With d
K2, jSum and d
I, jBetween magnitude relationship, if d (i, k2)+d (k2, j)≤(i j), judges directly that then this stop k2 is current nearest stop to d; Otherwise judge d
I, k1+ d
K1, jWith d
I, k2+ d
K2, jBetween magnitude relationship, and the stop k of the minimum value correspondence that judgement is obtained is as current nearest stop.
So continue, travel through all stop k1, k2......kn successively, so that find current nearest stop.
After finding current nearest stop, with the distance of this vehicle current location m between this current nearest stop is one side, and with this vehicle current location m to the distance between the terminating point j be another side, whether the angle that judgement is made up of these both sides surpasses an angle of 90 degrees, if surpass 90 degree, illustrate that then this vehicle has missed this current nearest stop.Then, the stop of the inferior minimum value correspondence that the above ergodic process is obtained is as current nearest stop, whether the angle of relatively forming between this vehicle current location m and this current nearest stop k, the terminating point j surpasses 90 degree again, thereby judges whether this current nearest stop is the required stop of this vehicle.So whether the angle of relatively forming between current location, current nearest stop, the terminating point repeatedly surpasses an angle of 90 degrees, up to finding the required stop of this vehicle.
In step 250, car-mounted terminal 120 is reminded driver's fatigue driving or its nearest stop address of prompting driver with voice or written form, so that the driver stops rest after the early warning that receives from monitor supervision platform 110.
Obviously, under the prerequisite that does not depart from true spirit of the present invention and scope, the present invention described here can have many variations.Therefore, the change that all it will be apparent to those skilled in the art that all should be included within the scope that these claims contain.The present invention's scope required for protection is only limited by described claims.
Claims (10)
1. vehicle assistant drive method, wherein, this vehicle comprises car-mounted terminal, and this car-mounted terminal carries out information interaction by wireless network and monitor supervision platform, it is characterized in that, comprising:
Step a, this car-mounted terminal be according to the latitude and longitude information of vehicle under the GPS position location satellite obtains this car-mounted terminal regularly that is provided with of described monitor supervision platform, and this vehicle latitude and longitude information is sent to this monitor supervision platform;
Step b, this monitor supervision platform calculates this vehicle according to this vehicle latitude and longitude information and continues the driving time, and/or the offset distance of this vehicle shift Preset Line, and/or search the stop that obtains for driver's rest, and when triggering early-warning conditions, this vehicle sends the early warning order to described car-mounted terminal;
Step c, this car-mounted terminal remind driver tired driving with voice or written form, and/or inform driver's stop address after the early warning order that receives from this monitor supervision platform, stop rest for the driver.
2. a kind of vehicle assistant drive method as claimed in claim 1 is characterized in that, comprises before described step a:
Steps d is registered vehicle under this car-mounted terminal by described monitor supervision platform, so that this car-mounted terminal can carry out information interaction with this monitor supervision platform.
3. a kind of vehicle assistant drive method as claimed in claim 1 is characterized in that, comprises before described step a:
Step e is provided with one or more in the frequency, fatigue driving parameter, vehicle ' circuit of this car-mounted terminal image data by described monitor supervision platform.
4. a kind of vehicle assistant drive method as claimed in claim 1 is characterized in that described step b comprises:
Step f, this monitor supervision platform obtains this Vehicle Speed according to the vehicle latitude and longitude information that car-mounted terminal gets access to;
Step g, this monitor supervision platform judge that whether this Vehicle Speed surpasses the threshold speed of default, and then judge whether this vehicle exceeds the speed limit, and when this overspeed of vehicle, then this vehicle has triggered the early warning order;
Step h, this monitor supervision platform obtains Vehicle Speed in real time, and judges whether the speed of a motor vehicle is stable, if speed of a motor vehicle shakiness, then this vehicle has triggered the early warning order.
5. a kind of vehicle assistant drive method as claimed in claim 1 is characterized in that, the calculating of offset distance comprises among the described step b:
Step I, this monitor supervision platform calculates the vertical range of this vehicle to Preset Line according to this vehicle latitude and longitude information, when this vehicle to the vertical range of Preset Line during greater than distance threshold, then this vehicle has triggered the early warning order;
Wherein, described Preset Line is the vehicle ' circuit of being set by monitor supervision platform.
6. a kind of vehicle assistant drive method as claimed in claim 1 is characterized in that searching of stop comprises among the described step b:
Step j calculates each stop to Preset Line starting point distance (d
I, k) arrive this Preset Line terminating point distance (d with corresponding stop
K, j) sum (d
I, k+ d
K, j);
Step r, the size of each and the value that obtain of comparison step j successively, thereby obtain minimum and value and with this minimum and the corresponding stop of value, and with this stop as the current stop that supplies driver's rest.
7. a kind of vehicle assistant drive method as claimed in claim 6 is characterized in that, comprises before the step r after described step j:
Step p calculates the distance (d of the starting point of described Preset Line to terminating point
I, j);
Step q, determination step j obtains and value (d
I, k+ d
K, j) distance (d that obtains with step p
I, j) between magnitude relationship, when d (i, k)+d (k, j)≤(i in the time of j), judges that directly the corresponding stop of this k value is current stop of having a rest for the driver, and skips described step r d; Wherein, the k value is got n from 0, and n is the integer greater than 0.
8. as claim 6 or 7 described a kind of vehicle assistant drive methods, it is characterized in that, after finding current stop of having a rest, comprise for the driver:
Step s, is one side with described current stop to the distance between this vehicle current location, and be another side with the distance of this vehicle current location between the described terminating point, the size at angle is made of in judgement these both sides, and then judge whether this vehicle current location has surpassed described current stop, thereby determine whether this current stop is the required stop of driver.
9. a vehicle DAS (Driver Assistant System) comprises car-mounted terminal and monitor supervision platform, and this car-mounted terminal and this monitor supervision platform are by wireless mode interactive information;
Described car-mounted terminal is used for the latitude and longitude information of vehicle under the GPS position location satellite obtains this car-mounted terminal regularly, and this vehicle latitude and longitude information is sent to this monitor supervision platform; And this car-mounted terminal also is used to receive the early warning order from described monitor supervision platform, and reminds driver tired driving based on this early warning order, and/or informs driver's stop address, stops rest for the driver;
Described monitor supervision platform is used to calculate this vehicle and continues the driving time, and/or the offset distance of this vehicle shift Preset Line, and/or searches the stop that obtains for driver's rest, and sends the early warning order to described car-mounted terminal when this vehicle triggers early-warning conditions.
10. a kind of vehicle DAS (Driver Assistant System) as claimed in claim 9, it is characterized in that, described monitor supervision platform comprises module is set, and this is provided with the one or more of frequency that module is used for disposing fatigue driving parameter, car-mounted terminal image data, vehicle ' circuit.
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