CN104658290A - Processing unit, system and method for suggesting crossroad driving - Google Patents
Processing unit, system and method for suggesting crossroad driving Download PDFInfo
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- CN104658290A CN104658290A CN201310585200.3A CN201310585200A CN104658290A CN 104658290 A CN104658290 A CN 104658290A CN 201310585200 A CN201310585200 A CN 201310585200A CN 104658290 A CN104658290 A CN 104658290A
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Abstract
The invention discloses a processing unit for suggesting crossroad driving. The processing unit comprises a crossroad information receiving module and a driving suggest generation module, wherein the crossroad information receiving module is used for receiving the traffic signal information of one or more crossroads before a vehicle as well as the driving distance information, related to the crossroads, of the vehicle; the driving suggest generation module is used for generating a driving suggest, to be provided to the driver of the vehicle, about how to pass the crossroads based on the information provided by the crossroad information receiving module. The invention further discloses a corresponding crossroad driving suggesting system and method.
Description
Technical field
The application relates to provides based on junction ahead traffic signal information processing unit, the system and method for driving suggestion to driver.
Background technology
In some traffic signals, signal lamp excess time (such as countdown form) is instructed to.But, traffic lights instruction excess time is not had at all crossings.Further, even if crossing has indicate this excess time, but because vehicle distances crossing also has a segment distance, so driver likely can only see signal lamp, and signal lamp excess time can not be seen.If do not know the signal lamp excess time of junction ahead, driver is often difficult to the traveling strategy before determining crossing.In addition, for some driver, even if see signal lamp excess time, being also difficult to decision with which kind of speed should travel towards crossing shape.
Such as, recurrent, vehicle is apart from a bit of distance in crossing, and driver sees that this crossroad traffic signal lamp is green, and thus driver attempts to accelerate so that through this crossing during green light.But the moment traffic lights arriving this crossing at vehicle may change yellow or redness into.Driver steps on suddenly brake with stop vehicle this moment, or determines to accelerate across this crossing, and this is breakneck and may causes accident.In addition, along with unexpected brake, with taking advantage of personnel also can come to harm.
Sometimes also can occur, driver have time enough signal lamp for time green through crossing, but driver do not know when it will change redness into, therefore may hesitate and slow down, this may disturb traffic.
In view of the above problems, when in the face of junction ahead, the suggestion about driving strategy is provided to be worth expecting to driver.
Summary of the invention
The application aims to provide provides the scheme of driving suggestion based on junction ahead traffic signal information to driver.
For this purpose, the application provides a kind of processing unit driving suggestion for crossing in one, comprise: intersection information receiver module, it is configured to receive the traffic lights information at least one crossing of vehicle front and the information of the vehicle operating range relevant to crossing; And drive suggestion generation module, it is configured to produce based on the information from intersection information receiver module will be supplied to vehicle driver about how to be advised by the driving at crossing.
In a kind of embodiments possible of described processing unit, described driving advises that generation module determines traffic signal light condition and the switching time at least one crossing described based on the information from information receiving module, and based on the target drive speed (that is, likely calculating the target drive speed relevant with multiple crossing, front) that the traffic signal light condition at least one crossing described is relevant with being at least crossing, first, front with switching time and the vehicle operating range relevant to crossing being the calculating of described vehicle.
In a kind of embodiments possible of described processing unit, if the target drive speed calculated allows top speed higher than first crossing, front, described driving suggestion comprises alerting driver and can not pass crossing, first, front during current green light or during being close to green light after current red light; Further, if the target drive speed calculated be equal to or less than first crossing, front allow top speed, described driving suggestion comprises suggestion drive speed.
In a kind of embodiments possible of described processing unit, described processing unit also comprises enforcement module, for when the target drive speed calculated higher than first crossing, front allow top speed forbid that vehicle performs driver and attempts to rush across the operation of crossing, first, front and accelerating vehicle, or force vehicle deceleration.
In a kind of embodiments possible of described processing unit, when the target drive speed calculated higher than first crossing, front allow top speed, described driving suggestion generation module calculates vehicle and can during which follow-up green light, drive through crossing, first, front and advise drive speed accordingly.
In a kind of embodiments possible of described processing unit, described suggestion drive speed is the minimum speed of vehicle by first crossing, front, or from described minimum speed to the velocity range of allowing top speed at first crossing, front.
In a kind of embodiments possible of described processing unit, at least one crossing described comprises the multiple crossing of vehicle front, and described driving suggestion generation module calculates the optimum drive speed that vehicle drives through each crossing successively.
In a kind of embodiments possible of described processing unit, described driving advises that generation module determines traffic signal light condition and the switching time at least one crossing described based on the information from information receiving module, and based on traffic signal light condition and switching time and the vehicle operating range relevant to crossing at least one crossing described, calculate with the current travel speed of vehicle, can during current green light or during being close to green light after current red light in pass crossing.
The application another aspect provides a kind of crossing at it and drives suggesting system for wearing, and comprising: information acquisition unit, it is configured to the traffic lights information at least one crossing, collection vehicle front and the information of the vehicle operating range relevant to crossing; Foregoing processing unit, itself and described information acquisition unit communication, and be configured to produce the driving suggestion that will be supplied to vehicle driver based on the information from described information acquisition unit; And indicating member, itself and described processing unit communication, and be configured to export to driver the driving suggestion produced by described processing unit.
Drive at described crossing in a kind of embodiments possible of suggesting system for wearing, described information acquisition unit comprises distance meter, and it is configured to measure the distance between described vehicle and described crossing.
Drive at described crossing in a kind of embodiments possible of suggesting system for wearing, described information acquisition unit comprises vehicle number word map, wherein stores the switching time of the traffic lights at crossing.
Drive at described crossing in a kind of embodiments possible of suggesting system for wearing, described information acquisition unit comprises video camera, and it is configured to the image of the traffic lights catching crossing place.
Drive in a kind of embodiments possible of suggesting system for wearing at described crossing, described crossing is driven suggesting system for wearing and is integrated in Vehicular navigation system.
The application another aspect provides a kind of crossing utilizing foregoing crossing to drive suggesting system for wearing enforcement at it and drives suggesting method, comprises the following steps: utilize the traffic lights information at least one crossing, described information acquisition unit collection vehicle front and the information of the vehicle operating range relevant to crossing; Utilize described processing unit to produce based on the information collected and will be supplied to vehicle driver about how to be advised by the driving at crossing; And utilize described indicating member to export described driving suggestion to driver.
According to the application, drive suggestion and be automatically provided to driver, the drive safety therefore at crossing place can be greatly improved, and vehicle pass-through fluency improves.
Accompanying drawing explanation
The detailed description of reading below by referring to accompanying drawing can understand the application further, in the accompanying drawings:
Fig. 1 is the schematic block diagram of the crossing driving suggesting system for wearing of the application; And
Fig. 2 shows the process flow diagram of the crossing driving suggesting method of a kind of embodiment of the application.
Fig. 3 shows the process flow diagram of the crossing driving suggesting method of the another kind of embodiment of the application.
Fig. 4 shows the process flow diagram of the crossing driving suggesting method of another embodiment of the application.
Embodiment
Suggesting system for wearing is driven and method will be described at this according to the crossing of the preferred implementation of the application.
As previously mentioned, when driver vehicle is in time having the crossing of traffic lights, may be difficult to determine how to pass this crossing, speed-raising is still slowed down.For this reason, the application provides a kind of automatically suggestion with regard to it at the driving strategy in front, crossing to driver.
As shown in Figure 1, drive suggesting system for wearing according to the crossing of the preferred implementation of the application, it can be integrated in Vehicular navigation system, mainly comprises processing unit 1, and all with information acquisition unit 2 and the indicating member 3 of processing unit 1 communication.
Information acquisition unit 2 is configured to the information gathered about the signal lamp state of the junction ahead that will be passed by vehicle and the spacing at switching time and vehicle and this crossing.
Information acquisition unit 2 can comprise the numerical map of Vehicular navigation system, at crossing, at least the data of traffic lights switching time at critical junction place be stored in this numerical map.This information is transferred into processing unit 1 in order to determine signal lamp state and switching time.
In addition, as above-mentioned employing numerical map scheme substitute or additional, information acquisition unit 2 can comprise video camera, for catching the image of the traffic lights at vehicle front crossing place.At some crossing place, signal lamp is shown by traffic signals switching time, and therefore video camera can catch shown signal lamp switching time in real time, and it will be transferred to this processing unit 1 for determining signal lamp state and switching time.In addition, the realtime graphic of the green light at vehicle front crossing place, amber light and red light, wherein comprise the information about signal lamp current state, switching time and interval, also can be captured in real time by this video camera, and the image captured is sent to this processing unit 1 for determining signal lamp state and switching time.
Say further, this information acquisition unit 2 also comprises distance meter, and it is configured to measure the distance between this vehicle and its upcoming traffic signal lamp.This distance meter can based on laser beam, based on microwave, based on image or any type that other is applicable to.Due to the advantage of long measuring distance and high measurement accuracy, based on laser beam and distance meter based on microwave be widely used in active safety systems of vehicles.In a kind of possible embodiment, this distance meter is formed by above-mentioned video camera.This information acquisition unit 2 sends information about this distance to processing unit 1.
Processing unit 1 comprises intersection information receiver module, it is configured to receive the information (comprising the traffic lights information at vehicle front crossing and the information etc. of the vehicle operating range relevant to crossing) from information acquisition unit 2, and drive suggestion generation module, it is configured to produce based on the information from intersection information receiver module will be supplied to vehicle driver about how to be advised by the driving at crossing.
Such as, first the driving suggestion generation module of processing unit 1 can calculate signal lamp state and switching time based on current time and the traffic lights be stored in numerical map switching time.
Comprise in the scheme of video camera at information acquisition unit 2, the driving suggestion generation module of processing unit 1 can use the image captured in real time by video camera, this image may comprise the information of switching time of traffic lights and interval or even shown signal lamp excess time, signal lamp state and the switching time of junction ahead can be determined thus, the especially excess time of current color signal lamp.
According to the further embodiments possible of the application, information acquisition unit 2 not only can determine signal lamp state and the switching time of junction ahead, can also determine signal lamp state and the switching time at one or more follow-up crossing.
On the other hand, the intersection information receiver module of processing unit 1 can receive the range information from distance meter, or receives the image information that may be used for calculating distance from video camera.
Based on the information that intersection information receiver module receives from information acquisition unit 2, the driving suggestion generation module determination signal lamp state of processing unit 1 and switching time and the distance that will travel, so as vehicle calculating can by the target drive speed at crossing during current green light or during being close to green light after current red light.
Specifically, the driving suggestion generation module of processing unit 1 according to the signal lamp state determined and can calculate current available driving time switching time.Such as, if the traffic lights of junction ahead current be green light, then current available driving time is current green light excess time; If the traffic lights of junction ahead are current is red light, then current available driving time is the duration being close to green light after red light adds current red light excess time.Based on current available driving time and the distance that will travel, the driving suggestion generation module of processing unit 1 can calculate by the target drive speed needed for crossing.
Then, processing unit 1 driving suggestion generation module by calculated target drive speed compared with the top speed of allowing.The top speed of allowing can limit based on the speed at road and crossing place, the safety condition at crossing place, vehicle capacity, traffic and other factors and determined.
Then, the driving of processing unit 1 suggestion generation module result based on the comparison produces command adapted thereto, and this instruction is sent to indicating member 3, so as the latter send embody this instruction be indicated to driver.
Specifically, if the target drive speed calculated is higher than the top speed of allowing, then given a warning to driver by indicating member 3, inform in it is during current green light or during being close to green light after current red light and can not pass this crossing, even if driver makes vehicle acceleration.So driver can determine slow down and vehicle will be stopped at crossing.As a kind of feasible program, processing unit 1 can comprise enforcement module, so that the acceleration forbidden vehicle execution driver to attempt to rush across crossing in the case and input, or forces vehicle deceleration.
On the other hand, if the target drive speed calculated is equal to or less than the top speed of allowing, then suggestion drive speed is indicated by indicating member 3 to driver.This instruction can with the form of video and/or audio.Suggestion drive speed can be confirmed as the minimum speed of vehicle through this crossing, or passes the velocity range of allowing top speed of minimum speed to first crossing, front at this crossing from vehicle.So, driver can be equal to or higher than this suggestion minimum speed or in this velocity range steering vehicle through this crossing.
According to the further embodiments possible of the application, when the target drive speed calculated is higher than the top speed of allowing, junction ahead can be driving through and advise drive speed accordingly during which green light after being close to green light after the driving suggestion generation module of processing unit 1 calculates current green light or current red light, and by indicating member 3 for driver offers suggestions instruction.
According to the further embodiments possible of the application, information acquisition unit 2 gathers signal lamp information switching time at multiple crossing, front, and the driving of processing unit 1 suggestion generation module calculates successively by the optimum drive speed at each crossing, front according to these information, with make vehicle can block by nothing as far as possible by each crossing, reduce unnecessary pause.
The crossing driving suggesting method can being driven suggesting system for wearing participation by above-mentioned crossing of a kind of embodiments possible according to the application is briefly described referring to Fig. 2.
In step sl, driving suggesting system for wearing in crossing starts its driving suggestion function.
Then, in step s 2, when vehicle is apart from first the crossing certain distance in front, the traffic signals signal lamp state at system acquisition first crossing, front and the information of switching time to determine current available driving time, and determine the distance that vehicle will travel.
Then, in step s3, system-computed is through the target drive speed needed for this crossing.
Then, in step s 4 which, system by the target drive speed that calculates compared with the top speed of allowing.
If the target drive speed calculated is higher than the top speed of allowing, so enter step S5, in this step S5, system gives a warning to driver, informs that it can not pass crossing in current available driving time.
Then, in step s 6, driver determines that in not during current green light or during being close to green light after current red light, steering vehicle is through crossing.As a kind of feasible program, the acceleration that the enforcement module in processing unit sends instruction and forbids vehicle execution driver to attempt to rush across crossing and input, or force vehicle deceleration.Then, step S2 is returned.
If in step s 4 which, the target drive speed calculated is equal to or less than the top speed of allowing, so enters step S7, and in this step S7, system provides drive speed to advise to driver.
Then, in step s 8, driver can determine with suggestion drive speed (be equal to or higher than advised minimum speed or in this velocity range) steering vehicle through crossing.Then, step S2 is returned.
The crossing driving suggesting method can being driven suggesting system for wearing participation by above-mentioned crossing of the another kind of embodiments possible according to the application is briefly described referring to Fig. 3.
Step S11-S15 in Fig. 3 illustrated embodiment is same or similar with the step S1-S5 in Fig. 2 respectively, here no longer repeated description.In the embodiment shown in fig. 3, only step S16-S18 is introduced.
Correspond to the step S5 shown in Fig. 1 in step S15() after step S16 in, crossing, first, front can be driving through during which green light after being close to green light after the current green light of system-computed or current red light, and calculate during this green light by the corresponding drive speed needed for crossing, first, front.
The step S7 shown in Fig. 1 is replaced in step S17() in, system provides the suggestion about being driving through crossing, first, front and corresponding drive speed during which green light to driver.
The step S8 shown in Fig. 1 is replaced in step S18() in, driver is driving through crossing, first, front with the drive speed of suggestion during that green light of suggestion.
The crossing driving suggesting method can being driven suggesting system for wearing participation by above-mentioned crossing of another embodiments possible according to the application is briefly described referring to Fig. 4.
In the step s 21, driving suggesting system for wearing in crossing starts its driving suggestion function.
Then, in step S22, when vehicle is apart from first the crossing certain distance in front, system obtains the traffic signals signal lamp state at each crossing, front and the information of switching time with the available driving time before determining crossing, first, front and between follow-up each crossing, and determine distance that vehicle will travel (vehicle to the distance at first crossing, front, and the distance between follow-up crossing).
Then, in step S23, system-computed is through the target drive speed needed for crossing, first, front.
Then, in step s 24 which, system by the target drive speed that calculates compared with the top speed of allowing.
If the target drive speed calculated is higher than the top speed of allowing, so enter step S25, in this step S25, system gives a warning to driver, informs that it can not pass crossing, first, front in current available driving time.
Then, in step S26, driver determines that in not during current green light or during being close to green light after current red light, steering vehicle is through crossing, first, front.As a kind of feasible program, the acceleration that the enforcement module in processing unit sends instruction and forbids vehicle execution driver to attempt to rush across crossing and input, or force vehicle deceleration.Then, step S22 is returned.
If the target drive speed calculated in step s 24 which is equal to or less than the top speed of allowing, so enter step S27, in this step S27, system-computed goes out to be driving through successively the best travel speed at each crossing, such as, in order to avoid running into red light.
Next, in step S28, system provides drive speed to advise to driver.
Then, in step S29, driver can determine with suggestion drive speed steering vehicle successively through each crossing.Then, step S22 is returned.
Concise and to the point description drives suggesting method (not shown) according to the crossing that can be participated in by above-mentioned crossing driving suggesting system for wearing of another embodiments possible of the application below.
In a first step, driving suggesting system for wearing in crossing starts its driving suggestion function.
Then, in the second step, when vehicle is apart from first the crossing certain distance in front, the traffic signals signal lamp state at system acquisition first crossing, front and the information of switching time to determine current available driving time, and determine the distance that vehicle will travel.
Then, in third step, system-computed with the current travel speed of vehicle, can during current green light or during being close to green light after current red light in through crossing.
If the result is negative, then give notice to driver, inform that driver can not pass crossing with current drive speed in current available driving time.
If result is yes, then give notice to driver, inform that it can pass crossing with current drive speed in current available driving time.
Alternatively, in third step, if the result is negative, namely system-computed goes out with the current travel speed of vehicle, can not during current green light or during being close to green light after current red light in through crossing, then carry out the step S3 to S8 of the embodiment shown in Fig. 2, or, carry out the step S13 to S18 of the embodiment shown in Fig. 3.
It may be noted that the embodiments possible of suggesting method is driven at the crossing in order to clearly explain the application, in the process flow diagram shown in Fig. 2-4, with the addition of the operation steps of driver, such as, step S6 in Fig. 2, the step S18 in S8, Fig. 3, the step S29 in Fig. 4.Be appreciated that these driver's operation stepss are not comprised in the crossing driving suggesting method of the application itself.
Also it may be noted that the step in each embodiment of above-described the application's method mutually can combine, replace.
Suggesting system for wearing and method are driven in crossing by means of the application, and the drive safety at crossing can be enhanced, and the traffic near crossing can become more smooth.
Although disclosed some particular implementation of the application, these embodiments are only presented in an illustrative manner, and do not mean that the application's scope of restriction.Appended claim and their equivalent way are intended to cover by all amendment fallen in the scope and spirit of the application, substitute and change.
Claims (14)
1. drive a processing unit for suggestion for crossing, comprising:
Intersection information receiver module, it is configured to receive the traffic lights information at least one crossing of vehicle front and the information of the vehicle operating range relevant to crossing; And
Drive suggestion generation module, it is configured to produce based on the information from intersection information receiver module will be supplied to vehicle driver about how to be advised by the driving at crossing.
2. processing unit as claimed in claim 1, wherein, describedly drive suggestion generation module determines at least one crossing described traffic signal light condition and switching time based on the information from information receiving module, and based at least one crossing described traffic signal light condition with switching time and the vehicle operating range relevant to crossing are that described vehicle calculates the target drive speed relevant with being at least crossing, first, front.
3. processing unit as claimed in claim 2, wherein, if the target drive speed calculated allows top speed higher than first crossing, front, described driving suggestion comprises alerting driver and can not pass crossing, first, front during current green light or during being close to green light after current red light; Further, if the target drive speed calculated be equal to or less than first crossing, front allow top speed, described driving suggestion comprises suggestion drive speed.
4. processing unit as claimed in claim 3, wherein, described processing unit also comprises enforcement module, for when the target drive speed calculated higher than first crossing, front allow top speed forbid that vehicle performs driver and attempts to rush across the operation of crossing, first, front and accelerating vehicle, or force vehicle deceleration.
5. processing unit as claimed in claim 3, wherein, when the target drive speed calculated higher than first crossing, front allow top speed, described driving suggestion generation module calculates vehicle and can during which follow-up green light, drive through crossing, first, front and advise drive speed accordingly.
6. the processing unit according to any one of claim 3 to 5, wherein, described suggestion drive speed is the minimum speed of vehicle by first crossing, front, or from described minimum speed to the velocity range of allowing top speed at first crossing, front.
7. the processing unit according to any one of claim 1 to 6, wherein, at least one crossing described comprises the multiple crossing of vehicle front, and described driving suggestion generation module calculates the optimum drive speed that vehicle drives through each crossing successively.
8. the processing unit according to any one of claim 1 to 6, wherein, described driving advises that generation module determines traffic signal light condition and the switching time at least one crossing described based on the information from information receiving module, and based on traffic signal light condition and switching time and the vehicle operating range relevant to crossing at least one crossing described, calculate with the current travel speed of vehicle, can during current green light or during being close to green light after current red light in pass crossing.
9. a suggesting system for wearing is driven at crossing, comprising:
Information acquisition unit, it is configured to the traffic lights information at least one crossing, collection vehicle front and the information of the vehicle operating range relevant to crossing;
Processing unit according to any one of claim 1 to 8, itself and described information acquisition unit communication, and be configured to produce the driving suggestion that will be supplied to vehicle driver based on the information from described information acquisition unit; And
Indicating member, itself and described processing unit communication, and be configured to export to driver the driving suggestion produced by described processing unit.
10. suggesting system for wearing is driven at crossing as claimed in claim 9, and wherein, described information acquisition unit comprises distance meter, and it is configured to measure the distance between described vehicle and described crossing.
Suggesting system for wearing is driven at 11. crossings as described in claim 9 or 10, and wherein, described information acquisition unit comprises vehicle number word map, wherein stores the switching time of the traffic lights at crossing.
Suggesting system for wearing is driven at 12. crossings according to any one of claim 9 to 11, and wherein, described information acquisition unit comprises video camera, and it is configured to the image of the traffic lights catching crossing place.
Suggesting system for wearing is driven at 13. crossings according to any one of claim 9 to 12, and wherein, described crossing is driven suggesting system for wearing and is integrated in Vehicular navigation system.
Suggesting method is driven at 14. 1 kinds of crossings utilizing the crossing according to any one of claim 9 to 13 to drive suggesting system for wearing enforcement, comprises the following steps:
Utilize the traffic lights information at least one crossing, described information acquisition unit collection vehicle front and the information of the vehicle operating range relevant to crossing;
Utilize described processing unit to produce based on the information collected and will be supplied to vehicle driver about how to be advised by the driving at crossing; And
Described indicating member is utilized to export described driving suggestion to driver.
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