EP0244447A1 - Warning system for rear end vehicle collisions - Google Patents
Warning system for rear end vehicle collisionsInfo
- Publication number
- EP0244447A1 EP0244447A1 EP86906236A EP86906236A EP0244447A1 EP 0244447 A1 EP0244447 A1 EP 0244447A1 EP 86906236 A EP86906236 A EP 86906236A EP 86906236 A EP86906236 A EP 86906236A EP 0244447 A1 EP0244447 A1 EP 0244447A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vehicle
- distance
- warning system
- rear end
- approach
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q5/00—Arrangement or adaptation of acoustic signal devices
- B60Q5/005—Arrangement or adaptation of acoustic signal devices automatically actuated
- B60Q5/006—Arrangement or adaptation of acoustic signal devices automatically actuated indicating risk of collision between vehicles or with pedestrians
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/50—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking
- B60Q1/525—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking automatically indicating risk of collision between vehicles in traffic or with pedestrians, e.g. after risk assessment using the vehicle sensor data
- B60Q1/535—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking automatically indicating risk of collision between vehicles in traffic or with pedestrians, e.g. after risk assessment using the vehicle sensor data to prevent rear-end collisions, e.g. by indicating safety distance at the rear of the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
- B60Q9/008—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling for anti-collision purposes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2013/932—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles using own vehicle data, e.g. ground speed, steering wheel direction
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2013/9322—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles using additional data, e.g. driver condition, road state or weather data
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2013/9325—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles for inter-vehicle distance regulation, e.g. navigating in platoons
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2013/9327—Sensor installation details
- G01S2013/93272—Sensor installation details in the back of the vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/024—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using polarisation effects
- G01S7/025—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using polarisation effects involving the transmission of linearly polarised waves
Definitions
- the present invention relates to a warning system for rear end vehicle collisions.
- Such systems are often intended to be coupled to an automatic breaking system or an automatic air bag activator or the like, with the possible ultimate objective of an automated highway.
- the major problem with headway warning systems is that of radar returns from unwanted ta>rgets, such as signs and sign posts, overhead bridges, metal debris on the road and the like. The unwanted returns lead to false alarms and to failed detections.
- the problem stems from the fact that most targets, even where stationary, appear to be approaching the vehicle.
- the aim of the present invention is to reduce the incidence of rear end vehicle collisions and hence the occurance of whiplash and neck injuries caused thereby. Rear end collisions have been found to be the most frequent type of inter vehicle collision.
- the main reason for the frequent occurance of such collisions is that following vehicles tend to allow an insufficient safety distance to a leading vehicle.
- the driver of the following vehicle adopts a safety distance that feels safe based on his or her experience with the vehicle and the predominate weather conditions.
- the adopted distance may not be sufficiently safe and a rear end collision may occur with the leading vehicle.
- the present invention provides a warning system for rear end vehicle collisions to provide a warning to a driver of a following vehicle and/or a leading vehicle that the following vehicle is likely to collide with the leading vehicle unless evasive action is taken by one or both of the drivers.
- a warning system for rear end vehicle collisions characterised in that it comprises a ranging mean arranged to be attached to the rear of a vehicle and disposed to determine the distance to a following vehicle, a signal processor configured to determine a safe distance of approach for the following vehicle and an alarm means to be activated when the distance of approach of the following vehicle is not outside the safe distance determined by the signal processor.
- a vehicle characterised in that it comprises a front, a rear, a ground engaging steering wheel and a warning system for rear end vehicle collisions comprising a ranging means attached to the rear of the vehicle and disposed to determine the distance to a following vehicle, a signal processor configured to determine a safe distance of approach for the following vehicle and an alarm means to be activated when the distance of approach of the following vehicle is not outside the safe distance determined by the signal processor.
- Figure 2 is a schematic representation of a vehicle comprising the warning system of Figure 1 and shown in use.
- FIG. 1 there is shown a warning system for rear end vehicle collisions 10 comprising a ranging means 12 having a transmitter antenna 14 and a receiver antenna
- the transmitter antenna 14 and the receiver antenna"16 may be formed as a single antenna.
- the antenna is of a relatively small construction so as to readily allow for installation in vehicles being compact cars.
- a Mills Cross Antenna could be used, thus achieving a composite beam width of 2°x2° with a
- V-shaped antenna V-shaped antenna
- 45° polorization may be used to reduce interference at the receiver antenna 16 from targets adjacent the target immediately following the vehicle A, such as for example, vehicles in adjacent lanes of traffic.
- the ranging means 12 comprises a steer means
- the ranging means 12 also comprises radar sensor 17 having a transmitter 18 connected to drive the transmitter antenna 14 and a receiver 20 connected to receive signal collected by the receiver antenna 16.
- the ranging means 12 may conveniently operate at microwave frequencies such as for example the K-band (17-25 GHz) or the Ku-band (25-40 GHz). Generally, use of higher frequencies is preferred in order to improve discrimination of the target and allow for use of smaller antenna. However, where the frequency is too high weather condititons may adversely affect there-Liabilityand accuracy of the ranging means 12.
- the ranging means 12 operate on a Doppler principle where the signal received by the receiver 20 is slightly frequency shifted from that which was transmitted. The frequency shift is then proportioned to the radial velocity of a target, relative to the transmitter 18, such as a following vehicle B, as shown in Figure 2.
- the warning system 10 also comprises a signal processor 22 having an output 24 to the transmitter 18 and an input 26 from the receiver 20.
- the signal processor 22 comprises an initiator (not shown) to periodically send an activating signal from the output 24 to the transmitter 18 to cause it to transmit a ranging signal.
- the signal processor 22 also comprises a frequency counter (not shown) connected to the input 26 and configured to determine the frequency shift which has been introduced into the received signal by the moving following vehicle B and hence the velocity of the vehicle B toward the vehicle A.
- the warning system 10 also comprises a vehicle status means 28 having an output 30 to the signal processor 22.
- the vehicle status means 28 comprises a vehicle speed measuring means to measure the speed of the vehicle A, an angle measurement means to measure the angle of a ground engaging steering wheel of the vehicle A and a brake sensor to sense application of brakes of the vehicle A.
- the angle measurement means is connected to the steer means to steer the beam produced by the transmitter antenna 14 to compensate for road curvatures.
- the signal processor comprises a range calculation means (not shown) configured to determine a safe distance and/or a safe speed of approach for the following vehicle B.
- the determination of the safe distance and/or safe speed of approach principally based on the measured velocity of the vehicles A & B and the estimated braking deceleration of which the vehicles A & B are capable.
- the determination of safe distance of approach and the instantaneous distances of approach may conveniently be expressed as follows:
- Vr actual velocity of vehicle B. b ⁇ - braking deceleration of vehicle A. b - braking deceleration of vehicle B.
- Vo-Vr relative velocity measured by the ranging means 12.
- the warning means 10 also comprises an adjustment means
- the adjustment means 32 is arranged to be adjusted by a driver of the vehicle A to compensate the determination of the safe distance of approach for prevailing road conditions such as weather and qualityof road and/or visibility and the estimated driver reaction time.
- the former is used to modify the estimated values of braking deceleration capable of the vehicles A & B.
- the latter is used to increase the value of safe distances by adding a term which is the product of the velocity (Vo) of the vehicle A and the reaction time (TR) of the driver of the vehicle A, namely TRVQ.
- the reaction time Tr is expected to be based on the experience and the age and the like of the driver.
- the warning means 10 may also comprise a range rate means configured to count beats produced by the.
- the range rate means thus determines the rate of charge of the distance to the following vehicle B and is used to determine a safe speed of approach thereof.
- the range rate means also serves to provide a check of the range determinations.
- the warning means 10 also comprises an alarm means 36 connected to an output 38 of the signal processor 22.
- the alarm means comprises a visual alarm 40 ( Figure 2) arranged to be located adjacent the rear of the vehicle A and in view of the driver of the following vehicle B.
- the alarm means 36 is activated by the signal processor 22 to operate the visual alarm 40 when the distance and/or speed of approach of the following vehicle B is not outside the determined safe distance and/or the safe speed of approach so as to provide a warning to the driver of the following vehicle B. It is intended that the driver of the following vehicle B then act upon the warning toattempt to avoid a collision.
- the alarm means 36 also comprises an audio and/or visual alarm 42 arranged to be located adjacent a front of the vehicle A and in hearing range and/or in view of the driver of the vehicle A.
- the alarm means 36 is activated by the signal processor 22 to operate the audio and/or visual alarm 42 when the distance and/or speed of approach of the following vehicle B continues to be not outside the determined safe distance and/or the safe speed of approach, so as to provide a warning to the driver of the vehicle A.
- the audio and/or visual alarm 42 is thus activated after the visual alarm 40 and so the driver of the vehicle A is given an ultimate warning of a collision.so as to take action to brace himself or herself to avoid neck injury which is otherwise generally associated with surprise rear end collisions.
- the warning system 10 of the present invention is installed into a vehicle A.
- the antennae 14 and 16 are attached to the rear of the vehicle A.
- the visual alarm 40 is attached to the vehicle A adjacent the rear and disposed in a rearward direction to be viewed by a driver of a following vehicle B.
- the audio and/or visual alarm 42 is attached adjacent the front of the vehicle A and disposed rearwardly to be heard and/or viewed by the driver of the vehicle A. Connections are then made to attach the vehicle status means 28 to the vehicle A.
- the driver Before driving the vehicle A the driver enters details such as his or her age and experience into the adjustment means 22. The date used by the adjustment means 32 to determine the likely reaction time TR of the driver. The reaction time TR is sent to the signal processor 22 via the output 32 in order to adjust the determination of safe distances and/or safe speed for the following vehicle B.
- the driver also enters into the adjustment means 32 the prevailing road and weather condition. These conditions are used, ad described hereinabove, to adjust the determination of safe distances and/or safe speed or approach.
- the signal processor 22 is set for the braking deceleration generally found in the make and model of vehicle to which the warning system 10 is attached. Also, an estimate of an average braking deceleration for likely following vehicle B is also set into the signal processor 22.
- the transmitter 22 periodically activates the transmitter 18 which in turn transmits a ranging beam to be radiated by the transmitter antenna 14.
- the ranging signal is reflected by the vehicle B back to the receiving antenna 16.
- the frequency counter in the signal processor 22 measures the frequency change in the ranging signal and hence the relative approach velocity of the following vehicle B.
- the distance to the following vehicle is determined by the signal processor 22 using the expression for R.
- the range rate is also determined by the range rate means as described hereinabove.
- the signal processor 22 When the distance and/or the speed of approach is not outside the safe distance and/or safe speed of approach the signal processor 22 first activates the alarm means
- the signal processor 22 then activates the audio and/or visual alarm 42 to warn the driver of the vehicle A to brace himself or herself.
- the receiver 20 does not receive a return ranging signal.
- the angle measurement means in the vehicle status means 28 determines the angle of deflection of the steering wheels of the vehicle and produces a corresponding steering of the ranging beam.
- the warning system 10 of the present invention provides a two stage warning to attempt to avoid rear- end vehicle collisions. Modifications and variations such as would be apparent to a skilled addressee are deemed within the scope of the present invention.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- Human Computer Interaction (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Traffic Control Systems (AREA)
Abstract
L'avertisseur (10) de danger de collision à l'arrière d'un véhicule comporte un radar (12) fixé à l'arrière d'un véhicule (A) et orienté pour mesurer la distance d'un véhicule (B) qui suit et pour déclencher une alarme (36, 40, 42) lorsque la distance et/ou la distance d'approche du véhicule suivant (B) ne sont pas comprises dans une plage théoriquement sûre de distance et/ou vitesse d'approche calculée par un processeur de signaux (22) du dispositif avertisseur (10). L'alarme (36, 40, 42) est d'abord déclenchée pour avertir (40) le conducteur du véhicule suivant (B) et ensuite avertir (42) le conducteur du premier véhicule (A). L'invention concerne également un véhicule (A) auquel est fixé le dispositif avertisseur (10).The collision warning device (10) at the rear of a vehicle comprises a radar (12) attached to the rear of a vehicle (A) and oriented to measure the distance from a vehicle (B) which follows and to trigger an alarm (36, 40, 42) when the distance and / or the approach distance from the next vehicle (B) is not within a theoretically safe range of approach distance and / or speed calculated by a signal processor (22) of the warning device (10). The alarm (36, 40, 42) is first triggered to warn (40) the driver of the next vehicle (B) and then warn (42) the driver of the first vehicle (A). The invention also relates to a vehicle (A) to which the warning device (10) is attached.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU314285 | 1985-10-25 | ||
AU3142/85 | 1985-10-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0244447A1 true EP0244447A1 (en) | 1987-11-11 |
Family
ID=3693604
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86906236A Withdrawn EP0244447A1 (en) | 1985-10-25 | 1986-10-27 | Warning system for rear end vehicle collisions |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0244447A1 (en) |
WO (1) | WO1987002812A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109243203A (en) * | 2018-10-25 | 2019-01-18 | 湖北工业大学 | A kind of truck anti-collision early warning system and method based on radar |
Families Citing this family (22)
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AU3144289A (en) * | 1988-03-18 | 1989-09-21 | General Electric Company, Plc, The | Position determining equipment |
GB2260209A (en) * | 1991-10-02 | 1993-04-07 | Brian Roger Hardy | Braking distance indicating and warning device |
GB2291244B (en) * | 1994-07-15 | 1998-02-11 | Design Technology & Innovation | Vehicle safety systems |
GB2298045A (en) * | 1995-02-14 | 1996-08-21 | Jr Thomas James Mulhall | Proximity warning device |
GB2331583A (en) * | 1997-11-20 | 1999-05-26 | Thomas Wayne Richards | Vehicle automatic distance warning system |
GB9726290D0 (en) * | 1997-12-13 | 1998-02-11 | Jameson Arnold | Warning system |
DE20009138U1 (en) * | 2000-05-20 | 2001-09-27 | Hagmeier Georg | Warning device |
US7585670B2 (en) | 2001-12-07 | 2009-09-08 | Cytori Therapeutics, Inc. | Automated methods for isolating and using clinically safe adipose derived regenerative cells |
US7771716B2 (en) | 2001-12-07 | 2010-08-10 | Cytori Therapeutics, Inc. | Methods of using regenerative cells in the treatment of musculoskeletal disorders |
CA2469370C (en) | 2001-12-07 | 2014-07-08 | Macropore Biosurgery, Inc. | Adipose-derived cell processing unit |
US9597395B2 (en) | 2001-12-07 | 2017-03-21 | Cytori Therapeutics, Inc. | Methods of using adipose tissue-derived cells in the treatment of cardiovascular conditions |
US7651684B2 (en) | 2001-12-07 | 2010-01-26 | Cytori Therapeutics, Inc. | Methods of using adipose tissue-derived cells in augmenting autologous fat transfer |
US7514075B2 (en) | 2001-12-07 | 2009-04-07 | Cytori Therapeutics, Inc. | Systems and methods for separating and concentrating adipose derived stem cells from tissue |
EP1521980B1 (en) * | 2002-07-05 | 2015-06-17 | Continental Teves AG & Co. oHG | System for preventing a rear-end collision |
GB2393835B (en) * | 2002-08-10 | 2005-02-23 | Martin Christopher Durant | Tailgate tracker |
GB2397682A (en) * | 2003-01-27 | 2004-07-28 | John Mcewen | Vehicle rear facing warning lights to signal dangerous proximity to a following vehicle |
GB2406989A (en) * | 2003-10-10 | 2005-04-13 | Mike Bundy | Proximity sensor |
EP1852323B1 (en) * | 2006-05-04 | 2016-08-10 | Volvo Car Corporation | Rear end collision mitigation system for an automotive vehicle |
GB0901906D0 (en) * | 2009-02-05 | 2009-03-11 | Trw Ltd | Collision warning apparatus |
ES2349609B1 (en) * | 2009-05-25 | 2011-10-28 | Sixto Arias Sanchez | ALERT DEVICE APPLICABLE TO AUTOMOBILE VEHICLES. |
DE102013222598B4 (en) * | 2013-11-07 | 2022-01-13 | Robert Bosch Gmbh | Warning device for a 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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US2974304A (en) * | 1960-01-15 | 1961-03-07 | Lester H Nordlund | Close-following vehicle warning system |
US3442347A (en) * | 1965-03-31 | 1969-05-06 | Robert W Hodgson | Safe trailing distance maintenance system for a trailing carrier vehicle |
DE2623643C2 (en) * | 1976-05-26 | 1986-11-20 | Daimler-Benz Ag, 7000 Stuttgart | Method for automatically regulating the safety distance between a vehicle and vehicles in front and a device for carrying out this method |
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DE3138377A1 (en) * | 1981-09-26 | 1983-04-07 | Hans-Hellmut Dipl.-Ing. 2061 Sülfeld Ernst | Device for warning of inadequate distances between motor vehicles |
DE3313866A1 (en) * | 1983-04-16 | 1984-10-18 | Robert Bosch Gmbh, 7000 Stuttgart | DEVICE FOR DETECTING OTHER VEHICLES IN THE REVISED FIELD OF VIEW OF A VEHICLE |
-
1986
- 1986-10-27 WO PCT/AU1986/000320 patent/WO1987002812A1/en unknown
- 1986-10-27 EP EP86906236A patent/EP0244447A1/en not_active Withdrawn
Non-Patent Citations (1)
Title |
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See references of WO8702812A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109243203A (en) * | 2018-10-25 | 2019-01-18 | 湖北工业大学 | A kind of truck anti-collision early warning system and method based on radar |
Also Published As
Publication number | Publication date |
---|---|
WO1987002812A1 (en) | 1987-05-07 |
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Legal Events
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