CN102842244B - A kind of vehicle early warning collision avoidance system and method - Google Patents
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Abstract
The invention discloses a kind of vehicle early warning collision avoidance system and method, this device comprises: GPS unit, information transmit-receive control module, communication unit, prewarning unit, wherein, locating information for collecting the locating information of this car, and is sent to information transmit-receive control module by GPS unit; The information of this car of information transmit-receive control module continuous reception, the information externally sending this car is continued by communication unit, and the information of other car of continuous reception, and the information of the information of this car and other car is carried out contrast judge, anti-collision warning signal is sent to prewarning unit.This vehicle early warning collision avoidance system can make driver when individual human visual system is subject to misty rain weather, dust and sand weather, barrier obstruction vehicle front, still can accurately judge attached vehicle condition around.Information communication between vehicle is provided, is conducive to driver and accurately makes driving judgement in a short period of time, save and deal with emergencies and dangerous situations the time, thus the safety coefficient of driving can be improved, during crisis situations, play the effect of protection life.
Description
Technical field
The invention belongs to vehicle networked control field, be specifically related to a kind of vehicle early warning collision avoidance system and method.
Background technology
The reason causing traffic hazard to occur has a variety of, roughly can divide into factor of natural environment and pure human factor.Wherein, factor of natural environment is difficult to change, if if human factor can be prevented effectively in advance, traffic hazard occurrence probability is actually and can effectively reduces.
Low visibility is the one of the main reasons of traffic hazard always, and dense fog or heavy rain weather all can cause visibility to reduce rapidly, have a strong impact on the sight line of driver, are the formidable enemies of traffic safety.Have a dense fog, have a strong impact on traffic safety, because vehicle can not normally travel, also can cause the traffic hazard of vehicle rear-end collision, a chain of collision.The driving of foggy weather has many points for attention to comprise: the windshield of automobile, headlight, taillight are wanted wiped clean, whether other security setting such as braking are safe and effective, maintain safe distance, foggy weather driving will be observed traffic rules and regulations and speed limit travels, and cannot step on the gas or sweep away slope etc.Expert advice: visibility is less than 200 meters when being greater than 100 meters, and speed per hour must not more than 60 kilometers; Visibility is less than 100 meters when being greater than 50 meters, and speed per hour must not more than 40 kilometers; Visibility is within 30 meters, and speed per hour should control below 20 kilometers; When visibility is at about 10 meters, speed per hour should control below 5 kilometers; Do not use high beam, Fog-proof light, taillight, side-marker lamp and dipped headlights be used, utilize light to improve visibility, see front vehicles and pedestrian clearly, also allow others easily see oneself; Honk more; Try not to overtake other vehicles; Take your time brake etc.Factor of natural environment is that we cannot change, although artificial mode above of passing through can reduce the impact that dense fog causes traffic safety, is not also effectively mode.Particularly for situation about happening suddenly in foggy weather emergency brake etc., front vehicle cannot be braked in time at all or be taked the mode of braking of being correlated with.
Summary of the invention
The present invention is so the technical matters solved is for above shortcomings in prior art; a kind of vehicle early warning collision avoidance system and method are provided; this vehicle early warning collision avoidance system is in driving procedure during low visibility; by information communication between vehicle; be conducive to driver and accurately make driving judgement in a short period of time; saving is dealt with emergencies and dangerous situations the time, thus can improve the safety coefficient of driving, plays the effect of protection life during crisis situations.
The invention provides a kind of vehicle early warning collision avoidance system, comprising: GPS unit, information transmit-receive control module, communication unit, prewarning unit, wherein,
Locating information for collecting the locating information of this car, and is sent to described information transmit-receive control module by GPS unit;
Information transmit-receive control module is used for the information of this car of continuous reception, continue the information externally sending this car, and the information of other car of continuous reception, and the information of the information of this car and other car is carried out contrast judge, anti-collision warning signal is sent to described prewarning unit; Wherein, the information of this car comprises the locating information of this car, and the information of other car comprises the locating information of other car;
Communication unit carries out transmission and the exchange of information for the information transmit-receive control module of this car and the information transmit-receive control module of other car;
The anti-collision warning signal that prewarning unit sends for the information transmit-receive control module receiving this car, and make early warning.
Preferably, described locating information comprises: one or more of travel speed, travel direction or positional information.
Preferably, described vehicle early warning collision avoidance system also comprises: collecting unit, for gathering the status information of this car, and the status information of this car is sent to described information transmit-receive control module;
The information that described information transmit-receive control module continues this car externally sent also comprises the status information of this car, and the information of other car of continuous reception also comprises the status information of other car.
Preferably, described status information comprises: one or several in the on off state of car speed, break condition, the on off state turning to situation, reversing situation, wiper on off state, Fog-proof light, high beam.
Preferably, described prewarning unit is display unit, for showing early warning information.
Preferably, described prewarning unit is audible alarm unit, for sending alarm voice prompting.
Preferably, described information transmit-receive control module adopts MCU(Micro ControlUnit, micro-control unit) controller.
Preferably, described communication unit adopts DSRC(Dedicated Short RangeCommunications, Dedicated Short Range Communications, technology) module.
The invention provides a kind of vehicle early warning avoiding collision, comprising:
(1) use GPS unit to collect the locating information of this car, and locating information is sent to information transmit-receive control module;
(2) information of this car of information transmit-receive control module continuous reception is used, and continue the information externally sending this car, the information of other car of continuous reception simultaneously, and the information of the information of this car and other car is carried out contrast judge, and collision alarm is sent to prewarning unit
Wherein, the transmission of carrying out information of the information transmit-receive control module of this car and the information transmit-receive control module of other car is realized by communication unit with exchanging.
Preferably, described locating information comprises: one or more of travel speed, travel direction or positional information.
This vehicle early warning collision avoidance system can make driver when individual human visual system is subject to misty rain weather, dust and sand weather, barrier obstruction vehicle front, still can accurately judge attached vehicle condition around.For vehicle is when scorch, road conditions are complicated; information communication between vehicle is provided, is conducive to driver and accurately makes driving judgement in a short period of time, save dealing with emergencies and dangerous situations the time in driving procedure; thus the safety coefficient of driving can be improved, serve the effect of protection life during crisis situations.
Accompanying drawing explanation
Fig. 1 is the vehicle early warning collision avoidance system figure of the two cars in the embodiment of the present invention 1;
Fig. 2 is the vehicle early warning collision avoidance system control flow chart in the embodiment of the present invention 1.
Embodiment
For making those skilled in the art understand technical scheme of the present invention better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Embodiment 1
The present embodiment provides a kind of vehicle early warning collision avoidance system, as illustrated in fig. 1 and 2, comprising: GPS unit, information transmit-receive control module, communication unit, prewarning unit, wherein,
Locating information for collecting the locating information of this car, and is sent to information transmit-receive control module by GPS unit;
Information transmit-receive control module is used for the information of this car of continuous reception, continues the information externally sending this car, and the information of other car of continuous reception, and the information of the information of this car and other car is carried out contrast judges, anti-collision warning signal is sent to prewarning unit; Wherein, the information of this car comprises the locating information of this car, and the information of other car comprises the locating information of other car;
Communication unit carries out transmission and the exchange of information for the information transmit-receive control module of this car and the information transmit-receive control module of other car; Preferably, described communication unit adopts DSRC module, realizes the information communication between vehicle by communication unit;
The anti-collision warning signal that prewarning unit sends for the information transmit-receive control module receiving this car, and make early warning.
This vehicle early warning collision avoidance system can make driver when individual human visual system is subject to misty rain weather, dust and sand weather, barrier obstruction vehicle front, still can accurately judge attached vehicle condition around.For vehicle is when scorch, road conditions are complicated; information communication between vehicle is provided, is conducive to driver and accurately makes driving judgement in a short period of time, save dealing with emergencies and dangerous situations the time in driving procedure; thus the safety coefficient of driving can be improved, serve the effect of protection life during crisis situations.
Preferably, described locating information comprises: one or more of travel speed, travel direction or positional information.Information transmit-receive control module is packaged into the locating information of this car the vehicle that a packet sends to surrounding by communication unit, also receives the information packet of the locating information of surrounding vehicles simultaneously.The locating information of the locating information of this vehicle and other vehicle is carried out contrast COMPREHENSIVE CALCULATING by information transmit-receive control module, the relative distance between this car with other car, relative travel speed, relatively travel direction can be preset, and according to reaction time of driver, judge hazardous collision driving condition, make hazardous collision early warning at any time, anti-collision warning signal is sent to prewarning unit.
Preferably, vehicle early warning collision avoidance system also comprises: collecting unit, for gathering the status information of this car, and the status information of this car is sent to information transmit-receive control module;
The information that described information transmit-receive control module continues this car externally sent also comprises the status information of this car, and the information of other car of continuous reception also comprises the status information of other car.
Preferably, described status information comprises: one or several in the on off state of car speed, break condition, the on off state turning to situation, reversing situation, wiper on off state, Fog-proof light, high beam.This car information that such information transmit-receive control module is collected comprises: the status information of this car that the locating information of this car that GPS unit is collected and collecting unit are collected, by communication unit, this car information is sent to the vehicle of surrounding with the form of packet, simultaneous communications unit receives and comprises the status information of surrounding vehicles and the packet of locating information.Preferably, other vehicle has the vehicle early warning collision avoidance system the same with this car, as shown in Figure 1, A car and B car are two cars with the same vehicle early warning collision avoidance system, and vehicle early warning collision avoidance system comprises: GPS unit, information transmit-receive control module, communication unit, prewarning unit, collecting unit.A car and B car realize the communication between car car by communication unit, thus realize transmission and the exchange of information between car car.
Collecting unit collects the switching-state information of wiper on off state, Fog-proof light, and these information are sent to information transmit-receive control module, when wiper is opened or Fog-proof light unlatching, information transmit-receive control module judges that present weather conditions are rainy day or greasy weather inclement weather, controls to open GPS unit; When wiper cuts out or Fog-proof light cut out, information transmit-receive control module judges that present weather conditions are non-rainy day or non-greasy weather inclement weather, controls to close GPS unit, certainly, even if under non-misty rain sky inclement weather conditions, also can a direct-open GPS unit.Driver to the reaction time of emergency case at about 0.6 second, therefore need within 1 second, to warn driver in advance, under misty rain weather condition, driver generally can travel with lower 40 ~ 60 meters or lower speed, the distance of moving vehicle per second is between 10 ~ 18 meters, therefore described communication module, with the status information of his car of the frequency reception of 1 hertz and the status information that this car occurs, to guarantee under early warning accurately prerequisite, makes driver have enough reaction time and braking distance.
The status information of this car and the status information of other car contrast by information transmit-receive control module, such as car speed, break condition, turn to situation, reversing situation, and driver accurately can know the situation of surrounding vehicles.Because surrounding vehicles is numerous, information transmit-receive control module can set out the scope of the status information of other car gathering transmitting-receiving control module comparative selection in advance, i.e. early warning range.Preferably, the relative distance of this car of determining of the positional information of the positional information of this car that this car GPS unit that information transmit-receive control module can be received by communication module is collected and other car that the GPS unit of other car is collected and other car, presets a relative distance value as the scope of status information of other car gathering transmitting-receiving control module comparative selection.Such information transmit-receive control module can contrast the status information of the status information and this vehicle that meet pre-conditioned vehicle of surrounding simultaneously, and in conjunction with the locating information that GPS unit sends, judge in this early warning range, whether have such as following situation: closely brake in front, path conflict vehicle etc., and send anticollision early warning signal in time, driver can be strengthened predictable to what collide, strive for pre-warning time, alleviate the burden of driver, reduce traffic hazard, thus huge economic loss can be avoided.
Preferably, the relative distance value that information transmit-receive control module presets this car and other vehicles is as the scope of status information gathering other car receiving and dispatching control module comparative selection in the scope of about 200 meters, more preferably, presetting this car with the relative distance value of other vehicles is in the scope of about 150 meters, and the status information of these cars and locating information state are followed the tracks of, once have emergency condition such as to brake, turn to, move backward, slow down, information transmit-receive control module can send anti-collision warning signal at any time to prewarning unit.Preferably, described information transmit-receive control module adopts MCU controller.Preferably, described prewarning unit is display unit, for showing described early warning information, such as: front truck brakes, asks suitable slow down; Or left direction has car near this car, please note dodging by slow down; Or right direction has car near this car, please note dodging by slow down.Preferably, described prewarning unit is audible alarm unit, for sending alarm voice prompting.
Embodiment 2
The present embodiment provides a kind of vehicle early warning avoiding collision, comprising:
(1) use GPS unit to collect the locating information of this car, and locating information is sent to information transmit-receive control module.
(2) information of this car of information transmit-receive control module continuous reception is used, and continue the information externally sending this car, the information of other car of continuous reception simultaneously, and the information of the information of this car and other car is carried out contrast judge, and collision alarm is sent to prewarning unit
Wherein, the transmission of carrying out information of the information transmit-receive control module of this car and the information transmit-receive control module of other car is realized by communication unit with exchanging.
Preferably, the locating information of this car that described GPS unit is collected comprises: one or more of travel speed, travel direction or positional information.
This vehicle early warning avoiding collision can make driver when individual human visual system is subject to misty rain weather, dust and sand weather, barrier obstruction vehicle front, still can accurately judge attached vehicle condition around.For vehicle is when scorch, road conditions are complicated; information communication between vehicle is provided, is conducive to driver and accurately makes driving judgement in a short period of time, save dealing with emergencies and dangerous situations the time in driving procedure; thus the safety coefficient of driving can be improved, serve the effect of protection life during crisis situations.
Be understandable that, the illustrative embodiments that above embodiment is only used to principle of the present invention is described and adopts, but the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (10)
1. a vehicle early warning collision avoidance system, is characterized in that, comprising: GPS unit, information transmit-receive control module, communication unit, prewarning unit and collecting unit, wherein,
Locating information for collecting the locating information of this car, and is sent to described information transmit-receive control module by GPS unit;
The status information of this car for gathering the status information of this car, and is sent to described information transmit-receive control module by collecting unit, and described status information comprises the switching-state information of wiper on off state and Fog-proof light;
Information transmit-receive control module is used for the information of this car of continuous reception, continue the information externally sending this car, and the information of other car of continuous reception, and the information of the information of this car and other car is carried out contrast judge, anti-collision warning signal is sent to described prewarning unit; Wherein, the information of this car comprises the locating information of this car, and the information of other car comprises the locating information of other car;
Communication unit carries out transmission and the exchange of information for the information transmit-receive control module of this car and the information transmit-receive control module of other car;
The anti-collision warning signal that prewarning unit sends for the information transmit-receive control module receiving this car, and make early warning;
Wherein, the wiper on off state sent according to collecting unit when information transmit-receive control module and the switching-state information of Fog-proof light, judge present weather conditions be the rainy day or the greasy weather time, the information transmit-receive control module of this car and the information transmit-receive control module of other car are carried out transmission and the exchange of information by instruction communication unit with the frequency of 1 hertz.
2. vehicle early warning collision avoidance system according to claim 1, is characterized in that, described locating information comprises: one or more of travel speed, travel direction or positional information.
3. vehicle early warning collision avoidance system according to claim 1, it is characterized in that, the information that described information transmit-receive control module continues this car externally sent also comprises the status information of this car, and the information of other car of continuous reception also comprises the status information of other car.
4. vehicle early warning collision avoidance system according to claim 3, is characterized in that, described status information also comprises: car speed, break condition, turn in the on off state of situation, reversing situation, high beam one or several.
5. vehicle early warning collision avoidance system according to claim 1, is characterized in that, described prewarning unit is display unit, for showing early warning information.
6. vehicle early warning collision avoidance system according to claim 1, is characterized in that, described prewarning unit is audible alarm unit, for sending alarm voice prompting.
7. vehicle early warning collision avoidance system according to claim 1, is characterized in that, described information transmit-receive control module adopts MCU controller.
8. vehicle early warning collision avoidance system according to claim 1, is characterized in that, described communication unit adopts DSRC module.
9. a vehicle early warning avoiding collision, is characterized in that, comprising:
(1) use GPS unit to collect the locating information of this car, and locating information is sent to information transmit-receive control module; Use collecting unit to gather the status information of this car, and the status information of this car is sent to described information transmit-receive control module, described status information comprises the switching-state information of wiper on off state and Fog-proof light;
(2) information of this car of information transmit-receive control module continuous reception is used, and continue the information externally sending this car, the information of other car of continuous reception simultaneously, and the information of the information of this car and other car is carried out contrast judge, and collision alarm is sent to prewarning unit
Wherein, the transmission that the information transmit-receive control module of this car and the information transmit-receive control module of other car carry out information is realized by communication unit with exchange, the wiper on off state sent according to collecting unit when information transmit-receive control module and the switching-state information of Fog-proof light, judge present weather conditions be the rainy day or the greasy weather time, the information transmit-receive control module of this car and the information transmit-receive control module of other car are carried out transmission and the exchange of information by instruction communication unit with the frequency of 1 hertz.
10. vehicle early warning avoiding collision according to claim 9, is characterized in that, described locating information comprises: one or more of travel speed, travel direction or positional information.
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| CN102542845A (en) * | 2011-12-23 | 2012-07-04 | 奇瑞汽车股份有限公司 | Lane changing early warning system and method based on GPS (global positioning system) positioning and vehicle-vehicle communication technology |
| CN102616235A (en) * | 2012-04-09 | 2012-08-01 | 北京航空航天大学 | Cooperative anti-collision device based on vehicle-vehicle communication and anti-collision method |
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