CN203102612U - Anti-collision system for ensuring driving safety of automobile - Google Patents
Anti-collision system for ensuring driving safety of automobile Download PDFInfo
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- CN203102612U CN203102612U CN 201320152129 CN201320152129U CN203102612U CN 203102612 U CN203102612 U CN 203102612U CN 201320152129 CN201320152129 CN 201320152129 CN 201320152129 U CN201320152129 U CN 201320152129U CN 203102612 U CN203102612 U CN 203102612U
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Abstract
The utility model discloses an anti-collision system for ensuring the driving safety of an automobile. The anti-collision system comprises a microprocessor, an ultrasonic transmitter, a wireless transmitter and a wireless receiving device, wherein the ultrasonic transmitter is arranged on a fixed point or automobile and used for transmitting ultrasonic waves towards a rear automobile; the wireless transmitter is used for transmitting radio waves towards the rear automobile; the wireless receiving device is arranged in the front of the automobile; the wireless receiving device comprises a wireless receiver and a sound source locating device composed of an ultrasonic receiver, wherein the ultrasonic receiver and the wireless receiver are both connected with the microprocessor, and the alarm signal output end of the microprocessor is connected with an alarm device; the distance from the rear automobile to a front automobile or barrier is calculated according to the time difference between the received radio waves and ultrasonic waves for distance measurement, the measurement distance is longer, and the measurement precision is high; and the relative speed of the front automobile and the rear automobile is obtained through calculating the frequency of the ultrasonic waves for distance measurement according to the analysis for the Doppler effect, so that the driving safety is greatly improved.
Description
Technical field
The utility model relates to automobile safety system, especially a kind of running safety anticollision system that is used under the lower weather condition of visibility.
Background technology
Automobile pollution constantly increases at present, vehicle flowrate on the road is increasing, traffic hazard takes place frequently, especially at night relatively poor the or foggy weather of illuminating position, back car can not be judged the place ahead local traffic far away, back car often has little time reasons such as brake owing to the speed of a motor vehicle is too fast, cause traffic safety accident such as knock into the back.Though the range radar that is applied on the automobile has been arranged at present, it is according to the emission ultrasound wave, and then accepts the ultrasound wave that reflects, and the ultrasound wave loss that reflects is bigger, and it is limited to measure operating distance, and can't know relative velocity, and reliability is low.
Summary of the invention
At above-mentioned technical matters, the utility model provides a kind of reliability high running safety anticollision system.
To achieve these goals, the technical solution used in the present invention is as follows:
A kind of running safety anticollision system, it is characterized in that, comprise microprocessor and be installed in point of fixity or car on the car that is used for backward launch hyperacoustic ultrasonic transmitter, the wireless launcher of car emitting radio wave backward, be installed in the preceding radio receiver of car, described radio receiver comprises auditory localization device and the wireless receiver of being made up of ultrasonic receiver, this ultrasonic receiver all is connected with described microprocessor with wireless receiver, and the alarm signal output ends of this microprocessor is connected with warning device.
Also comprise the radio communication device that is used for wireless networking communication between vehicle, this radio communication device is connected with described microprocessor.
Described radio communication device can be radio communication devices such as wireless router.
Described auditory localization device comprises four ultrasonic receivers, these four ultrasonic receivers are distributed on the same facing perpendicular to the ground, each place, right angle of facing all is provided with a described ultrasonic receiver, in the center of facing described wireless receiver is installed, each ultrasonic receiver all equates to the distance of wireless receiver;
Also comprise GPS module and display, this GPS module is connected with described microprocessor respectively with display.
Good effect of the present utility model is:
On each car and point of fixity car all be installed simultaneously backward launch hyperacoustic ultrasonic transmitter, the wireless launcher of car emitting radio wave backward, this ultrasonic transmitter and wireless launcher be ultrasound wave of emission range finding simultaneously and range finding radiowave respectively, back car is according to receiving range finding radiowave and hyperacoustic mistiming of range finding, calculate distance apart from front truck or barrier, measuring distance is longer, the precision height.Back car also will obtain the relative velocity of front truck and back car according to Analysis of doppler effect by the frequency of ultrasonic of calculating range finding.When after the ultrasonic frequency that receives of car reducing, illustrate that front truck speed is faster than back vehicle speed, rear-end collision can not appear, do not point out warning.When after the ultrasonic frequency that receives of car increasing, illustrate that the back vehicle speed is faster than preceding vehicle speed, if if judge relatively near speed big or two cars less than safe distance according to measurement result, then prompting warning.If the ultrasonic frequency that receives does not change, illustrate that then the place ahead keeps identical speed with the rear.When near speed when equaling current vehicle speed, the place ahead be described for being fixing obstacle, when fixed distance barrier the time less than safe distance, the prompting warning.
System also is equipped with the radio communication device that is used for wireless networking communication between vehicle, this radio communication device can be to the automatic network-building each other of the vehicle in the certain limit, issuing time benchmark and information of vehicles, the phase mutual interference of avoiding different vehicle to transmit is because therefore the coding difference of each car can discern a plurality of targets in the place ahead, and surrounding vehicles can obtain the width of vehicle, information such as vehicle make things convenient for the driver of back car to judge, the generation that reduces or avoid traffic accident.
The number of ultrasonic receiver is a tetrad, these four ultrasonic receivers are distributed on the same facing perpendicular to the ground, each place, right angle of facing all is provided with a ultrasonic receiver, the mistiming that receives same sound-source signal according to different ultrasonic receivers calculates the position angle of front vehicles, cooperate simultaneously and go up the GPS module, determine the track that front vehicles is in, if with front vehicles not on same runway, security incident can not appear, even therefore the speed of a motor vehicle surpasses front truck and less than in the safe distance scope, does not also carry out alarm.
Description of drawings
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is face quaternary cross battle array positioning principle figure.
Embodiment
Below in conjunction with specific embodiment the utility model is described in further detail.
Embodiment 1:
As shown in Figure 1, a kind of running safety anticollision system, comprise that microprocessor 1 and the vehicle-mounted car that is used for backward launch hyperacoustic ultrasonic transmitter 2, the wireless launcher 3 of car emitting radio wave backward, be installed in the auditory localization device of forming by four ultrasonic receivers 4 before the car, wireless receiver 5, microprocessor 1 is connected with ultrasonic transmitter 2 by driver, microprocessor 1 also is connected with wireless launcher 3, ultrasonic receiver is connected with microprocessor 1 by the ultrasound wave amplifier, wireless receiver 5 is connected with microprocessor 1 by no line amplifier, and the alarm signal output ends of this microprocessor 1 is connected with the signal input part of warning device.
Car all is installed on each car simultaneously backward launches hyperacoustic ultrasonic transmitter 2, the wireless launcher 3 of car emitting radio wave backward, this ultrasonic transmitter 2 and wireless launcher 3 be ultrasound wave of emission range finding simultaneously and range finding radiowave respectively, back car ultrasonic receiver and wireless receiver 5 receive ultrasonic signal and the radio signal that the place ahead emission comes respectively, the aerial speed of radio signal is 300,000 kilometer per seconds, and the aerial transfer rate of ultrasonic signal has only 340 meter per seconds, therefore in this range finding is used, the transmission time of radio signal can ignore fully, microprocessor 1 is according to receiving range finding radiowave and hyperacoustic mistiming of range finding, can calculate distance apart from front truck or barrier, the ultrasonic energy loss is little, measuring distance is longer, the precision height.
The place that traffic hazard takes place easily for fixing barrier etc. on the corner of road and road is installed simultaneously backward car and is launched the hyperacoustic ultrasonic transmitter 2 and the wireless launcher 3 of car emitting radio wave backward, this makes front vehicle also can in time know the information of the place ahead barrier, and is careful by easily sending out the dangerous situation highway section.
Back car also will and calculate the frequency of ultrasonic of range finding according to Analysis of doppler effect.When after the ultrasonic frequency that receives of car compare with standard frequency and reducing, illustrate that front truck speed is faster than back vehicle speed, rear-end collision can not appear, do not point out warning.When after the ultrasonic frequency that receives of car compare with standard frequency and increasing, illustrate that the back vehicle speed is faster than preceding vehicle speed, if judge that according to measurement result two spacings are nearer, then prompting warning.If the ultrasonic frequency that receives is compared with standard frequency and do not changed, illustrate that then the place ahead keeps identical speed with the rear.When the back car equals current vehicle speed near the speed of front truck, illustrate that then the place ahead is the obstacle of fixing, when fixed distance barrier less than safe distance the time, prompting is reported to the police, thus the driver slow down and go slowly, drive with caution.
System also is equipped with the radio communication device that is used for wireless networking communication between vehicle, this radio communication device all is connected with microprocessor 1, this radio communication device can be to the automatic network-building each other of the vehicle in the certain limit before the car and behind the car, all mutual issuing time benchmark and information of vehicles or obstacle information between vehicle, the information of vehicles of each car all includes unique coding of representing this vehicle or obstacle information respectively, ultrasonic signal that is used to find range and radio signal by this unique encoding identification different vehicle or barrier transmission, the phase mutual interference of having avoided different vehicle and/or barrier place to transmit, because the coding difference of each car, therefore can discern a plurality of targets in the place ahead, and can obtain the width of vehicle by coding, information such as vehicle, make things convenient for the driver of back car to judge, the generation that reduces or avoid traffic accident.
Radio communication device is a wireless router, constitutes WLAN between the router, and communication mode can be wireless communication technologys such as wireless WIFI.
Position and relative velocity with front truck have been arranged, also need to determine the position of front truck, it is to adopt four ultrasonic receivers are set, these four ultrasonic receivers are distributed on the same facing perpendicular to the ground, each place, right angle of facing all is provided with a described ultrasonic receiver, in the center of facing described wireless receiver 5 is installed, each ultrasonic receiver all equates to the distance of wireless receiver 5; Also comprise GPS module and display, this GPS module is connected with microprocessor 1 respectively with display.
Each ultrasonic receiver all equates to the distance of wireless receiver 5, adopt planar four-element battle array algorithm, its principle is based on the geometry location method of time delay, be to utilize the mistiming (time delay) that receives same sound-source signal on each array element of ultrasonic receiver array, and geometric relationship is obtained the azimuth information of sound source.For the angle of pitch, position angle and the distance of measuring the three dimensions target, need three independently delay volumes, so need four ultrasonic receivers at least, as shown in Figure 2, provided a kind of geometric model of planar four-element cross battle array among the figure: the coordinate of four microphone array elements is respectively M1 (d/2,0,0), and M2 (0, d/2,0), M3 (d/2,0,0), M4 (0,-d/2,0), the coordinate of sound source S is (x, y, z), sound source is r to the distance of true origin, and the angle of pitch is θ, the position angle is that d is an array element distance.Suppose r〉〉 d, can suppose that then the signal that basic matrix receives is a plane wave.If with respect to M1, sound source arrives array element M2, M3, and the time delay of M4 is respectively τ 21, τ 31, τ 41, and sound source is to M2, M3, M4 is respectively d21, d31, d41 with path difference to M1.
Can obtain sound source S about (x, y, r by shifting onto
1) volume coordinate:
If c is the velocity of sound, path difference is expressed as:
According to this planar four-element battle array algorithm, organize the location of realizing by solving an equation, and when data processing, only need utilize microprocessor 1 to solve an equation and just can draw the tram coordinate of S fast spatial sound source.Cooperate the GPS module afterwards, it is on that the GPS module then can be judged front truck for what road, with reference to the national standard of automobile brake, and according to relative velocity, distance, the scope that set positions is reported to the police.
The mistiming that receives same sound-source signal according to different ultrasonic receivers calculates the orientation of front vehicles, cooperate simultaneously and go up the GPS module, determine the track that front vehicles is in, if with front vehicles not on same runway, security incident can not appear, even therefore the speed of a motor vehicle surpasses front truck and not in the safe distance scope, does not also carry out alarm.
Display is used for the road information situation and shows as human-computer interaction interface.
Embodiment 2:
Embodiment 1 can adopt identical many groups with ultrasonic receiver among the embodiment 2 with ultrasonic transmitter.Adopt the identical ultrasonic receivers of many groups, be certain angle between their planes, receive the place ahead from the ultrasound wave of different directions to position.Launch hyperacoustic ultrasonic transmitter backward a plurality of towards different directions also can be set, these a plurality of ultrasonic transmitters are simultaneously to the identical ultrasound wave of different directions emission, to solve the angle of coverage problem.
The foregoing description of the present utility model only is to be explanation the utility model example, and is not to be qualification to embodiment of the present utility model.For those of ordinary skill in the field; can also make other multi-form variation and changes on the basis of the above description; all embodiments are not given at this exhaustive, but everyly belong to the conspicuous variation that the technical solution of the utility model amplifies out or change the row that still are in protection domain of the present utility model.
Claims (4)
1. running safety anticollision system, it is characterized in that, comprise microprocessor (1) and be installed in point of fixity or car on the car that is used for backward launch hyperacoustic ultrasonic transmitter (2), the wireless launcher of car emitting radio wave (3) backward, be installed in the preceding radio receiver of car, described radio receiver comprises auditory localization device (4) and the wireless receiver of being made up of ultrasonic receiver (5), this ultrasonic receiver all is connected with described microprocessor (1) with wireless receiver (5), and the alarm signal output ends of this microprocessor (1) is connected with warning device.
2. running safety anticollision system according to claim 1 is characterized in that, also comprises the radio communication device that is used for automated wireless group-net communication between vehicle, and this radio communication device is connected with described microprocessor (1).
3. running safety anticollision system according to claim 2 is characterized in that, described radio communication device is a wireless router.
4. running safety anticollision system according to claim 1, it is characterized in that, described auditory localization device (4) comprises four ultrasonic receivers, these four ultrasonic receivers are distributed on the same facing perpendicular to the ground, each place, right angle of facing all is provided with a described ultrasonic receiver, described wireless receiver (5) is installed in the center of facing, and each ultrasonic receiver all equates to the distance of wireless receiver (5);
Also comprise GPS module and display, this GPS module is connected with described microprocessor (1) respectively with display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320152129 CN203102612U (en) | 2013-03-29 | 2013-03-29 | Anti-collision system for ensuring driving safety of automobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320152129 CN203102612U (en) | 2013-03-29 | 2013-03-29 | Anti-collision system for ensuring driving safety of automobile |
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| CN203102612U true CN203102612U (en) | 2013-07-31 |
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| CN 201320152129 Expired - Fee Related CN203102612U (en) | 2013-03-29 | 2013-03-29 | Anti-collision system for ensuring driving safety of automobile |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319549A (en) * | 2014-07-16 | 2016-02-10 | 南京纳联信息科技有限公司 | Method for accurately measuring vertical distance by ultrasonic waves based on single-transmission multi-reception |
| WO2017152865A1 (en) * | 2016-03-11 | 2017-09-14 | 歌尔股份有限公司 | Following method and device for unmanned aerial vehicle and wearable device |
| CN110533961A (en) * | 2019-09-19 | 2019-12-03 | 陈晓飞 | A kind of relative position detection device for automobile |
| CN110718094A (en) * | 2019-10-29 | 2020-01-21 | 北京汽车集团有限公司 | Collision early warning method, device and equipment |
| CN112793565A (en) * | 2021-01-06 | 2021-05-14 | 恒大新能源汽车投资控股集团有限公司 | Backward collision alarm system, method and device and vehicle |
| CN112991816A (en) * | 2019-12-13 | 2021-06-18 | 智博汽车科技(上海)有限公司 | Vehicle collision early warning method and device, storage medium and vehicle |
-
2013
- 2013-03-29 CN CN 201320152129 patent/CN203102612U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319549A (en) * | 2014-07-16 | 2016-02-10 | 南京纳联信息科技有限公司 | Method for accurately measuring vertical distance by ultrasonic waves based on single-transmission multi-reception |
| WO2017152865A1 (en) * | 2016-03-11 | 2017-09-14 | 歌尔股份有限公司 | Following method and device for unmanned aerial vehicle and wearable device |
| US10816640B2 (en) | 2016-03-11 | 2020-10-27 | Goertek Inc. | Following method and device for unmanned aerial vehicle and wearable device |
| CN110533961A (en) * | 2019-09-19 | 2019-12-03 | 陈晓飞 | A kind of relative position detection device for automobile |
| CN110718094A (en) * | 2019-10-29 | 2020-01-21 | 北京汽车集团有限公司 | Collision early warning method, device and equipment |
| CN112991816A (en) * | 2019-12-13 | 2021-06-18 | 智博汽车科技(上海)有限公司 | Vehicle collision early warning method and device, storage medium and vehicle |
| CN112991816B (en) * | 2019-12-13 | 2022-10-11 | 智博汽车科技(上海)有限公司 | Vehicle collision early warning method and device, storage medium and vehicle |
| CN112793565A (en) * | 2021-01-06 | 2021-05-14 | 恒大新能源汽车投资控股集团有限公司 | Backward collision alarm system, method and device and vehicle |
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Legal Events
| 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: 20130731 Termination date: 20180329 |