CN203623649U - Automatic early warning system for vehicles - Google Patents
Automatic early warning system for vehicles Download PDFInfo
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- CN203623649U CN203623649U CN201320577119.6U CN201320577119U CN203623649U CN 203623649 U CN203623649 U CN 203623649U CN 201320577119 U CN201320577119 U CN 201320577119U CN 203623649 U CN203623649 U CN 203623649U
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Abstract
The utility model discloses an automatic early warning system for vehicles. The automatic early warning system is characterized by comprising a vehicle distance monitoring unit, a judging unit and a braking unit; the vehicle distance monitoring unit is used for monitoring the distance between a vehicle and a vehicle ahead in real time; the judging unit connected with the vehicle distance monitoring unit judges whether or not to start the braking unit according to distance data sent by the vehicle distance monitoring unit; the braking unit, namely an eddy current retarder, automatically reduces speed of the vehicle according to signals sent by the judging unit.
Description
Technical field
The utility model relates to a kind of automatic early-warning system for vehicle, relates in particular to the system of a kind of automatic early-warning braking.
Background technology
In Vehicle Driving Cycle process, need chaufeur to rely on individual driving experience and skill, the vehicle that judgement is driven at any time and the spacing of surrounding vehicles.In fact, due to the problem such as easily occur driver fatigue in Vehicle Driving Cycle process, divert one's attention, cause chaufeur fail to judge in time following distance and knock into the back, the traffic accident such as collision.
The autobrake system using in prior art, when spacing detector measure in real time the speed of a motor vehicle or with the distance of front vehicles after, detector sends an electric signal to an actr, actr is carried out this electric signal by oil pump or air pump, carry out a mechanical action to the brake facing of automobile, replace the chaufeur brake facing that tramps with one's feet.
The defect of prior art is, first, the response time of actr is long, and speed of response is slow, and actr internal circuit converts the electrical signal to the quality time that the mechanical action of oil pump or air pump consumes and causes the braking distance of vehicle to be greater than safety distance; The second, extra actr cost is installed in vehicle high, causes this autobrake system in luxury car, to carry out, be difficult to use on the commuter vehicle such as school bus, bus higher to safety performance requirement.
Utility model content
In order to overcome the defect existing in prior art, the utility model provides a kind of automatic early-warning system and method for vehicle, can automatic decision spacing and start a brake equipment, avoid knocking into the back and the generation of collision case.
In order to realize above-mentioned utility model object, the utility model discloses a kind of automatic early-warning system for vehicle, comprising: a spacing monitoring means, the distance for this car of Real-Time Monitoring with front vehicles; One judging unit, this judging unit is connected with this spacing monitoring means, and the range data sending according to this spacing monitoring means judges whether to start brake unit; One brake unit, the signal sending according to this judging unit, reduces this car speed of a motor vehicle automatically, and this brake unit is a current vortex retarder.
Further, this spacing monitoring means comprises a radar transmitter and receiving device.
Further, this spacing monitoring means comprises an image acquisition units, a lane detection unit, a car plate detecting unit and a treater.
Further, this spacing monitoring means comprises a satellite navigation module and a controller.
Further, this spacing monitoring means comprises RFID radio-frequency module and a controller.
The utility model discloses a kind of automatic early warning method for vehicle simultaneously, comprise: gather an image, judge in this image whether have vehicle, detect the distance of this vehicle, start a brake unit according to the distance of this vehicle, this brake unit is a current vortex retarder.
Further, this judges before whether having vehicle step in this image and also comprises: judge in this image, whether there is lane mark.
Compared with prior art, experience, ability that the automatic early-warning system and method that the utility model is used does not need to rely on chaufeur judge spacing and the speed of a motor vehicle, can also automatically slow down the speed of a motor vehicle according to the driving situation of this car and the driving situation real-time judge of vehicle around.Avoid too fast the knocking into the back and collision case of occurring of the speed of a motor vehicle being caused because of driver personal reason (as fatigue driving, dial mobile phone).
Moreover, current vortex retarder is used as brake unit, when judging unit sends after braking instruction, do not need to convert electrical signals to after a mechanical action and carry out brake, directly utilize this current vortex retarder to produce a lock torque.Therefore, saved valuable response time.
Accompanying drawing explanation
Can describe in detail and appended graphic being further understood by following utility model about advantage of the present utility model and spirit.
Fig. 1 is the structural representation of the related automatic early-warning system of the utility model;
Fig. 2 is one of specific embodiment of the related spacing monitoring means of the utility model;
Fig. 3 is another embodiment of the related spacing monitoring means of the utility model;
Fig. 4 is the diagram of circuit of the related automatic early warning method of the utility model.
The specific embodiment
Describe specific embodiment of the utility model in detail below in conjunction with accompanying drawing.
As shown in Figure 1, the structural representation of the automatic early-warning system for vehicle provided by the utility model.This automatic early-warning system comprises spacing monitoring means 100, the distance for this car of Real-Time Monitoring with front vehicles.Judging unit 200 is connected with this spacing monitoring means 100, and whether the real time data sending according to this spacing monitoring means 100 judges from the nearest vehicle of this car within the scope of the safe driving of this car.Brake unit 300 starts according to the judged result of judging unit 200, automatically stops this car.
In the first embodiment, spacing monitoring means 100 uses in prior art very ripe trailer-mounted radar commercial measurement spacing.Trailer-mounted radar utilization one feedway is initiatively launched infrared ray or super sonic, after running into object, infrared ray or super sonic can be reflected back corresponding infrared ray or super sonic, receiving device in radar receives infrared ray or the super sonic that object reflects, thereby is launched infrared ray or super sonic and received infrared ray or hypracoustic time gap or phase difference just can be determined the distance between object by calculating.Be less than or equal to a first default warning distance (as 10 meters) if spacing monitoring means 10 records real-time spacing, start immediately current vortex retarder.If recording real-time spacing, spacing monitoring means 10 is greater than the first warning distance (10 meters), be less than the second default warning distance (as 30 meters) simultaneously, and this spacing monitoring means monitors by the variation spacing of time and is reducing, and starts immediately current vortex retarder.
The second embodiment of spacing monitoring means is described below with reference to Fig. 2.The principle of the spacing monitoring means using in this second embodiment is image recognition technology.Image acquisition units 101 is one to be arranged at the camera on automobile, and this camera can Real-time Collection be positioned at the image of vehicle front traveling-position.This image acquisition units 101 is obtained after image, and whether detect front by lane detection unit 102 has vehicle and this parking stall in same track.The specific works step of lane detection unit 102 is: scanning is from the image data of image acquisition units 101, in this image data, select GTG value and change violent region, change from this GTG value that violent region, to choose GTG value high and have a part of elongated features, by high this GTG value and there is the paragraph width of elongated features and pre-stored standard vehicle diatom width value is compared, if comparison result meets a parameter, record the coordinate position of this lane mark on image data.Whether judge this parking stall is in which region of this lane mark, analyze in the same area whether have an obstacle, be a vehicle if having barrier judgment, if a vehicle starts car plate detecting unit 103.
Car plate detecting unit 103 detects this image data, determines the size of license plate image in this image.The method of determining the size of license plate image is to utilize the features such as the edge of car plate, grey scale change and color to detect.For example, adopt the method based on rim detection, first utilize edge detection operator, as Canny operator, Sobel Operator etc., the outline map of calculating car plate then utilizes two horizontal linears that vertical projection is overlapping of hough transform search in this outline map, finally near the horizontal linear obtaining, search for vertical line, thereby the license plate area in the image gathering is positioned.
Treater 101, according to the size of car plate, calculates spacing.
The third embodiment of spacing monitoring means is described below with reference to Fig. 3.The principle of the spacing monitoring means using in the 3rd embodiment is RFID and Satellite Navigation Technique.
This spacing monitoring means comprises a RFID radio-frequency module 202 and a satellite navigation module 203.Wherein RFID label 201 is installed on Ben Che and other vehicles, for sending radiofrequency signal.Be installed on RFID radio-frequency module 202 in spacing monitoring means and satellite navigation module 203 and orient exactly the distance of front vehicles and this car according to radiofrequency signal or gps signal.
If the information spinner latitude and longitude information that RF receiving and transmission module receives, system is carried out dynamic handling by the real-time latitude and longitude information to these information and Ben Che, can obtain the up-to-date spacing information in each moment.First pair warp and weft degree information is carried out formal definition.Definition latitude information north latitude is " just (+) ", and south latitude is " negative (-) "; Longitude information east longitude is " just (+) ", and west longitude is " negative (-) ".The about 40008km of girth of the earth.Mean latitude 1 is spent and is approximated greatly 111km.The latitude and longitude information precision that native system collects is 0.0001, and every ten thousand/unit represents that distance is approximately equal to 11.1m, can meet system accuracy demand.So, can obtain the model of generally finding range:
Wherein, E1 and E2 represent respectively the longitude information of this car and other vehicles, and W1 and W2 represent respectively the latitude information of this car and other vehicles, and a represents that 1 ° of longitude and latitude represents length, approximately 1.11 × 105m.For extraordinary circumstances, for example, in 180 ° of east longitudes and 180 ° of border region of west longitude, need convert and process at the computing degree of passing through that advances.The calculating of this car speed of a motor vehicle, can apply twice calculation of longitude & latitude that above-mentioned range finding model records this car and draw vehicle mobile distance in satellite navigation chip longitude and latitude scanning period T, thereby draw speed of a motor vehicle v.
Spacing monitoring means 100 obtains after a real-time spacing information, and judging unit 200 judges whether to start brake unit 300.In present embodiment, in judging unit 200, can pre-define three kinds of spacing situations, as safe distance between vehicles, without starting brake unit; Early warning spacing, starts a speech prompting device; Warning car distance, sends a control signal to brake unit, starts immediately brake unit.
The utility model also provides a kind of spacing automatic early warning method.As shown in Figure 4, Fig. 4 is the diagram of circuit of the related automatic early warning method of the utility model.
First gather an image 402, judge in this image whether have lane mark 403, if enter next step, if do not return to next image of 401 Resurveys.If there is lane mark in image, judge whether front has vehicle 403.This step may further include the track that judges vehicle place, whether with travel in this parking stall in same track or contiguous track.If there is no vehicle in image, return to next image of 401 Resurveys.If there is vehicle in front, detect the distance 404 of front vehicles.The method that detects vehicle distances can adopt above-mentioned image detection, RFID detection method, satellite navigation detection method etc.Detect after spacing, determine whether safe distance between vehicles 405.Safe distance between vehicles is returned to next image of 401 Resurveys if, and early warning spacing if, can start phonetic warning system, and warning car distance if starts brake system 406 immediately.
Described in this specification sheets is preferred embodiment of the present utility model, and above embodiment is only in order to the technical solution of the utility model to be described but not to restriction of the present utility model.All those skilled in the art comply with design of the present utility model by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should be within scope of the present utility model.
Claims (5)
1. for an automatic early-warning system for vehicle, it is characterized in that, comprising:
One spacing monitoring means, the distance for this car of Real-Time Monitoring with front vehicles;
One judging unit, described judging unit is connected with described spacing monitoring means, and the range data sending according to described spacing monitoring means judges whether to start brake unit;
One brake unit, the signal sending according to described judging unit, reduces this car speed of a motor vehicle automatically, and described brake unit is a current vortex retarder.
2. automatic early-warning system as claimed in claim 1, is characterized in that, described spacing monitoring means comprises a radar transmitter and receiving device.
3. automatic early-warning system as claimed in claim 1, is characterized in that, described spacing monitoring means comprises an image acquisition units, a lane detection unit, a car plate detecting unit and a treater.
4. automatic early-warning system as claimed in claim 1, is characterized in that, described spacing monitoring means comprises a satellite navigation module and a controller.
5. automatic early-warning system as claimed in claim 1, is characterized in that, described spacing monitoring means comprises RFID radio-frequency module and a controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320577119.6U CN203623649U (en) | 2013-09-17 | 2013-09-17 | Automatic early warning system for vehicles |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320577119.6U CN203623649U (en) | 2013-09-17 | 2013-09-17 | Automatic early warning system for vehicles |
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| CN203623649U true CN203623649U (en) | 2014-06-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104442756A (en) * | 2013-09-17 | 2015-03-25 | 泰乐玛汽车制动系统（上海）有限公司 | Automatic warning system and method for vehicles |
| CN105810012A (en) * | 2014-12-29 | 2016-07-27 | 中国移动通信集团公司 | Method and device of vehicle collision warning based on vehicle-borne terminal |
-
2013
- 2013-09-17 CN CN201320577119.6U patent/CN203623649U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104442756A (en) * | 2013-09-17 | 2015-03-25 | 泰乐玛汽车制动系统（上海）有限公司 | Automatic warning system and method for vehicles |
| CN105810012A (en) * | 2014-12-29 | 2016-07-27 | 中国移动通信集团公司 | Method and device of vehicle collision warning based on vehicle-borne terminal |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 |