CN1502502A - Prealarm method for preventing car overtaking collision and signal system thereof - Google Patents
Prealarm method for preventing car overtaking collision and signal system thereof Download PDFInfo
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- CN1502502A CN1502502A CNA031040896A CN03104089A CN1502502A CN 1502502 A CN1502502 A CN 1502502A CN A031040896 A CNA031040896 A CN A031040896A CN 03104089 A CN03104089 A CN 03104089A CN 1502502 A CN1502502 A CN 1502502A
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Abstract
Along the road line a series of ground signal receiving-transmitting stations is set according to a certain spacing distance, and a wireless network can be used as basis, on the vehicle a receiver-transmitter interacted with ground signal receiving-transmitting station is mounted. The ground signal receiving-transmitting station can transfer the received signal given out by vehicle being in certain distance range into the rear ground signal receiving-transmitting station by adopting wire mode, then said signal can be radio-transmitted by using the frequency which can be received by another set vehicle, at the moment, the rear vehicle going into the set range can receive the front vehicle warning prompt signal, so that it can effectively prevent the rear vehicle from colliding with tail of front vehicle.
Description
Technical field
The present invention relates to the safety traffic field, relate in particular to a kind of method for early warning and signal system thereof that prevents rear-end collision.
Background technology
On express highway, in case have a dense fog or night because of being subjected to the normal rear-end collision accident that causes of visual field restriction, the measure of taking at present is at automobile tail Fog-proof light to be installed, but this measure can not prevent to knock into the back effectively, tens of fender benders take place sometimes unexpectedly, therefore, have much room for improvement.
Summary of the invention
The objective of the invention is to propose a kind of method for early warning and early warning signaling system thereof that prevents rear-end collision,, prevent automobile generation rear-end collision to overcome the deficiencies in the prior art.
The present invention is based on wireless network, and automobile and ground signal transmitting-receiving station are interactive, and the method transmitted backward of the wired shielding of ground signal transmitting-receiving station realizes in addition.
The present invention prevents the method for early warning of rear-end collision, it is characterized in that highway is provided with a series of ground signal transmitting-receiving stations along the line at a certain distance, based on wireless network, transceiver with the interaction of ground signal transmitting-receiving station is set on automobile, the signal that the ground signal transmitting-receiving station sends automobile in the certain distance scope that receives is launched with the receivable frequency wireless of the automobile of another setting with the ground signal transmitting-receiving station that wired mode is transferred to setpoint distance backward, at this moment, enter in the rear automobile of this setpoint distance and promptly send the early warning signal that there is car in the place ahead.
Wired method of transmission backward can be adopted as the code division multiple access method between the described ground signal transmitting-receiving station; Can be the transmission of code division multiple access Walsh code system: the wire joint of educating at each ground signal transmitting-receiving station partly be provided with walsh code generator, correlation receiver and synchronization check device, the number of delivering a letter is via a signal wire transmits down, then the station with stand between be single line and be connected, Walsh code system maximum can be distributed 64 * 64 of addresses, can establish a plurality of address areas if need.
The present invention prevents the early warning signaling system of rear-end collision, it is characterized in that highway is provided with a series of ground signal transmitting-receiving stations along the line at a certain distance, and the signal transceiver of setting transmission range scope and frequency and the interaction of ground signal transmitting-receiving station is housed on automobile; Be provided with signal transceiver and frequency converter in each ground signal transmitting-receiving station with the vehicle signal interaction, the signal that fwd ground signal transmitting-receiving station sends the automobile that receives is passed to the back ground signal transmitting-receiving station of setpoint distance through the transmission line back kick, and frequency conversion is launched for the receivable frequency wireless of automobile of another setting.
Apparatus for receiving and transmitting radio signal is housed on the automobile, and the emission radius of its transmitting frequency f1 covers a ground signal transmitting-receiving station at least; And the emission radius of the transmitting frequency f2 of ground signal transmitting-receiving station is as the criterion not influence former front automobile, and in a single day the automobile of back enters this radio wave coverage area, will receive the f2 signal, and this signal transition that will receive immediately is the early warning signal.
The receiving device of ground signal transmitting-receiving station is by wired, back kick is defeated by the feedways back setpoint distance, several ground signal transmitting-receiving stations of interval, the receivable frequency of automobile that this signal is become another setting is gone out with radio wave transmission, and its emission radius is as the criterion with the radio receiver that does not influence on the front automobile; Native system is provided with two kinds of frequencies of wireless receiving and dispatching for this reason, if the transmitting frequency on each automobile is f1, its receive frequency is f2, and the receive frequency of each ground signal transmitting-receiving station is f1, its transmitting frequency is f2, the ground signal transmit receive unit is to receive with frequency f 1, and the feedway of receiving by transmission line in the ground signal transmitting-receiving station of back is outwards launched with the f2 frequency wireless.
Handle capable of being combined being installed in the same ground signal transmitting-receiving station of signal receiving/transmission device of uplink and downlink respectively with different separately frequencies.For making the signal transmitting and receiving mutually noninterfere of uplink and downlink, transmit receive units are overlapped in two of ground signal transmitting-receiving station setting, and its frequency should be different.Trigger-type frequency conversion switch all is housed on each automobile; When highway one side of travelling at different directions, must automobile on signal receiving/transmission device be set to the correspondent frequency set with this side ground signal transmitting-receiving station.
Usually,, the emission of the signal on the automobile radius 5-50m can be arranged on, generally 20m can be set to the three-line pavement according to the surface width of road of highway; The signal emission radius of ground signal transmitting-receiving station can be arranged on 10-200m, generally can be set to 100m.
Do not connect each other between the signal transceiver on each automobile, radio contact does not take place between the ground signal transmitting-receiving station yet, only limit transmitting/receiving wireless signal between vehicle signal transceiver and the ground signal transmitting-receiving station, be provided with two frequency f 1 and f2 for this reason, be to work like this between them: have the automobile of certain distance travelling in the same way as two front and back, the fwd automobile is launched the f1 frequency, ground signal transmitting-receiving station near on its road surface, place has at least one to receive the f1 frequency, pass through transmission line, back kick is defeated by the feedway of that ground signal transmitting-receiving station of setpoint distance, change the receivable frequency f 2 of automobile of setting into, go out with radio wave transmission, the overlay area that in a single day automobile of back enters this radiowave will receive the signal of f2 frequency, promptly knowing in the certain distance scope of front has automobile, and the automobile of back has the early warning indication immediately.
The emission radius of the radiowave on the automobile exceeds with the receiving device that covers at least one ground signal transmitting-receiving station, and not exceed three for excellent; And this signal that is received by certain signal transmitting and receiving station, ground is through transmission backward, frequency conversion, the radius of the radiowave of the ground signal transmitting-receiving station emission by the back again, exceeds with the radio system of the front automobile that do not cover this signal emitting-source.
The wired method of transmission backward of ground signal transmitting-receiving station of the present invention, also available known technology walsh code division multiple access technology, all ground signal transmitting-receiving stations are only connected with a signal wire (SW), the existing book of this technology is published, referring to CDMA (code division multiple access) mobile communication technology, Sun Lixin, Xing Ningxia, Beijing: People's Telecon Publishing House, 1996.
Be provided with in partly in the wired connection of each ground signal transmitting-receiving station in the present invention and comprise the walsh code generator, correlation receiver and synchronization check device are linked to be a signal wire (SW) with it, then the station with stand between be single line and be connected.Walsh code system maximum can be distributed 64 * 64 of addresses, can establish a plurality of address areas if need.
The use of walsh code is very important synchronously, therefore will add the synchronization check device, makes the synchronizing that transmits and receives at each station, prevents error code.
The present invention can prevent rear-end collision by actv., has improved running safety.
Description of drawings
Fig. 1 is the wireless and wired general illustration that prevents the early warning signaling system of rear-end collision.
Fig. 2 is the scheme drawing that prevents device and outside line in the early warning signaling system ground signal transmitting-receiving station station of rear-end collision.
Fig. 3 is a ground signal transmitting-receiving station one-way road apparatus structure scheme drawing.
The specific embodiment
Embodiment 1
Referring to Fig. 1, Fig. 2, wherein 1,2,3 is three continuous ground signal transmitting-receiving stations, the 4,5, the 6th, and the ground signal transmitting-receiving station after several all has signal input, output line as shown by arrows in each station at interval.7 is the indication source of early warning on the panel in the automobile among the figure, and 8 is the front automobile on the working direction, and 9 is the rear automobile; The apparatus for receiving and transmitting radio signal 10 that is equipped with on the front automobile, the emission radius of its transmitting frequency f1 exceeds with the receiving device that covers at least one ground signal transmitting-receiving station, and not exceed three for excellent, shown in left-hand broken line among the figure; The receiving device of ground signal transmitting-receiving station 1 backward passes to the at interval input end of that ground signal transmitting-receiving station 4 of several stations, setpoint distance through wired with signal with the car in front signal that receives; Each ground signal transmitting-receiving station all connects successively backward with identical distance, sees Fig. 1.The feedway of ground signal transmitting-receiving station 4 with the automobile receivable frequency f 2 of this signal frequency conversion for setting, is gone out with radio wave transmission, and the emission radius does not receive with this front automobile and exceeds.After the rear automobile that enters this setting emission radius receives signal f2, promptly send the early warning signal that there is car in the place ahead.Therefore can make the back car know that the front certain distance has car.
Can will control respectively in the same ground signal transmitting-receiving station of two cover ground signal transmitting-receiving station aggregate erections on being located at highway intermediate isolating band of uplink and downlink; In order to make uplink not be subjected to mutual interference mutually with the downlink automobile, a upper and lower line cover signal transmitting and receiving frequency separately has nothing in common with each other, and uplink is if represent that with frequency f 1 and f2 downlink is then represented with frequency f 3 and f4, seen Fig. 2.Trigger-type frequency conversion switch all is housed on each automobile; When highway one side of travelling, must be set to the correspondent frequency of setting with this side ground signal transmitting-receiving station at the signal receiving/transmission device on this side highway entrance automobile at different directions.Can realize by the converter plant that is provided with in this side highway entrance.
The wireless receiving frequency of ground signal transmitting-receiving station is f1 among Fig. 3, and transmitting frequency is f2, and wireless portion and former scheme do not have change.Therefore only go out the work one-way road.Emphasis is at the station and aspect the wire transmission between standing.11 is the walsh code generator among the figure, and 12 is correlation receiver; 13 is the synchronization check device, for making emission, receiving synchronously.
Walsh code is in use very important synchronously, is here to be added with the synchronization check device to make its synchronizing, can also use carrier wave certainly or overcome between line and delay time, and establishes between station and the station to be the integral multiple of walsh code cycle.
Embodiment 2
On the insulation strip in the middle of the highway, for surface width of road D the ground signal transmitting-receiving station is set by spacing distance; Each ground signal transmitting-receiving station is provided with two cover transmit receive units, and upper and lower line is a cover separately, and two cover frequencies have nothing in common with each other, and uplink is if represent that with frequency f 1 and f2 downlink is then represented with frequency f 3 and f4.
It is f1 that automobile is provided with transmitting frequency, the emission radius be D1 (wireless signal transmitter of D＜D1≤2D), receive frequency f2 is made as the signal receiver that can receive Fa, Fb or Fc, and the early warning signal telltale; The early warning signal telltale can be phonetic alarm or literal telltale.
The signal f1 that each ground signal transmitting-receiving station sends automobile in the certain distance scope D1 that receives converts 2 or 3 different frequency Fa to, Fb or Fc, adopt the walsh code division multiple access technology, only be transferred to the different early warning radius Da that sets respectively to the opposite sense of vehicle traveling direction respectively with a transmission line, Db or Dc are (for example: be made as 200 meters respectively, 100 meters or 50 meters) add a ground signal transmitting-receiving station spacing distance (for example: D is made as and has a lot of social connections 10 meters): Da+D, Db+D, the ground signal transmitting-receiving station at Dc+D place, each corresponding ground signal transmitting-receiving station respectively with the different frequency signals of each conversion with each early warning radius Da that sets respectively, Db or Dc go out for emission radius wireless transmission.
Its early warning signal telltale promptly was made warning in the mode that voice suggestion or literal show: " note when the automobile of back sailed the frequency signal coverage of the setting early warning radius that a certain ground signal transmitting-receiving station sent into! The place ahead Da (200 meters), Db (100 meters) or Dc (50 meters) have located car! "
Claims (7)
1, a kind of method for early warning that prevents rear-end collision, it is characterized in that highway is provided with a series of ground signal transmitting-receiving stations along the line at a certain distance, based on wireless network, transceiver with the interaction of ground signal transmitting-receiving station is set on automobile, the signal that the ground signal transmitting-receiving station sends automobile in the certain distance scope that receives, be transferred to the ground signal transmitting-receiving station of setpoint distance backward in wired mode, frequency conversion is launched for the receivable frequency wireless of automobile of another setting, enters this moment in the rear automobile of setpoint distance and then sends the early warning signal that there is car in the place ahead.
2, the method for early warning that prevents rear-end collision according to claim 1 is characterized in that wired method of transmission backward is the code division multiple access method between the described ground signal transmitting-receiving station.
3, the method for early warning that prevents rear-end collision according to claim 1, it is characterized in that wired method of transmission backward can be the transmission of code division multiple access Walsh code system between the described ground signal transmitting-receiving station: the wired connection at each ground signal transmitting-receiving station partly is provided with walsh code generator, correlation receiver and synchronization check device, the number of delivering a letter is via a signal wire transmits down, then the station with stand between be single line and be connected, Walsh code system maximum can be distributed 64 * 64 of addresses, can establish a plurality of address areas if need.
4, a kind of early warning signaling system that prevents rear-end collision is characterized in that highway is provided with a series of ground signal transmitting-receiving stations along the line at a certain distance, and the signal transceiver of setting transmission range scope and frequency and the interaction of ground signal transmitting-receiving station is housed on automobile; Be provided with signal transceiver and frequency converter in each ground signal transmitting-receiving station with the vehicle signal interaction, the signal that fwd ground signal transmitting-receiving station sends the automobile that receives is passed to the back ground signal transmitting-receiving station of setpoint distance by the transmission line back kick, and frequency conversion is launched for the receivable frequency wireless of automobile of another setting; This signal transition that signal receiver in the automobile of rear will receive is the early warning signal.
5, the early warning signaling system that prevents rear-end collision according to claim 4, the emission radius that it is characterized in that transmitting frequency f1 on the automobile covers a ground signal transmitting-receiving station at least, and the emission radius of the transmitting frequency f2 of ground signal transmitting-receiving station is as the criterion not influence former front automobile, in a single day the automobile of back enters this radio wave coverage area, will receive the f2 signal, on the automobile, send early warning signal immediately.
6, the early warning signaling system that prevents rear-end collision according to claim 4 is characterized in that being provided with in each ground signal transmitting-receiving station two covers and sets the mutually different transmit receive unit of frequency, is respectively uplink and downlink service.
7, the early warning signaling system that prevents rear-end collision according to claim 4 is characterized in that all being equipped with on each automobile trigger-type frequency conversion switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031040896A CN1502502A (en) | 2002-11-19 | 2003-02-24 | Prealarm method for preventing car overtaking collision and signal system thereof |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02138612.9 | 2002-11-19 | ||
| CN02138612 | 2002-11-19 | ||
| CNA031040896A CN1502502A (en) | 2002-11-19 | 2003-02-24 | Prealarm method for preventing car overtaking collision and signal system thereof |
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| Publication Number | Publication Date |
|---|---|
| CN1502502A true CN1502502A (en) | 2004-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031040896A Pending CN1502502A (en) | 2002-11-19 | 2003-02-24 | Prealarm method for preventing car overtaking collision and signal system thereof |
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| CN (1) | CN1502502A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102006104A (en) * | 2010-11-05 | 2011-04-06 | 青岛易特优电子有限公司 | Subway train-ground wireless transmission system |
| CN101763741B (en) * | 2009-12-28 | 2011-11-23 | 东北大学 | Method and device for early warning of vehicle rear-end accident on expressway |
| EP2423902A1 (en) | 2010-08-27 | 2012-02-29 | Scania CV AB (publ) | Safety system and method |
| WO2015096878A1 (en) * | 2013-12-24 | 2015-07-02 | Volvo Truck Corporation | Method and system for driver assistance for a vehicle |
-
2003
- 2003-02-24 CN CNA031040896A patent/CN1502502A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101763741B (en) * | 2009-12-28 | 2011-11-23 | 东北大学 | Method and device for early warning of vehicle rear-end accident on expressway |
| EP2423902A1 (en) | 2010-08-27 | 2012-02-29 | Scania CV AB (publ) | Safety system and method |
| CN102006104A (en) * | 2010-11-05 | 2011-04-06 | 青岛易特优电子有限公司 | Subway train-ground wireless transmission system |
| WO2015096878A1 (en) * | 2013-12-24 | 2015-07-02 | Volvo Truck Corporation | Method and system for driver assistance for a vehicle |
| US9889847B2 (en) | 2013-12-24 | 2018-02-13 | Volvo Truck Corporation | Method and system for driver assistance for a vehicle |
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