CN106347210A - Automobile door-open early-warning system and method - Google Patents

Automobile door-open early-warning system and method Download PDF

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Publication number
CN106347210A
CN106347210A CN201610785030.7A CN201610785030A CN106347210A CN 106347210 A CN106347210 A CN 106347210A CN 201610785030 A CN201610785030 A CN 201610785030A CN 106347210 A CN106347210 A CN 106347210A
Authority
CN
China
Prior art keywords
warning
early warning
microwave radar
target vehicle
automobile door
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.)
Pending
Application number
CN201610785030.7A
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Chinese (zh)
Inventor
占传送
苟斌
贾晓龙
罗飞
曹祥元
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongfeng Motor Corp
Original Assignee
Dongfeng Motor Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dongfeng Motor Corp filed Critical Dongfeng Motor Corp
Priority to CN201610785030.7A priority Critical patent/CN106347210A/en
Publication of CN106347210A publication Critical patent/CN106347210A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60QARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26Arrangement 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
    • B60Q1/50Arrangement 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60QARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q11/00Arrangement of monitoring devices for devices provided for in groups B60Q1/00 - B60Q9/00
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60QARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q9/00Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
    • B60Q9/002Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling for parking purposes, e.g. for warning the driver that his vehicle has contacted or is about to contact an obstacle
    • B60Q9/004Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling for parking purposes, e.g. for warning the driver that his vehicle has contacted or is about to contact an obstacle using wave sensors
    • B60Q9/006Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling for parking purposes, e.g. for warning the driver that his vehicle has contacted or is about to contact an obstacle using wave sensors using a distance sensor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60QARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q9/00Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
    • B60Q9/008Arrangement 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

Abstract

The invention relates to the technical field of automotive electronics, in particular to an automobile door-open early-warning system and method. When an automobile parks, information of the distance between a target automobile and an automobile of a user is received, the speed VB of the target automobile and driving time needed by the condition that the target automobile collides with the automobile of the user are calculated according to the information of the distance, the driving direction of the target automobile is judged according to the speed VB of the target automobile, the driving time is compared with early-warning calibrated time a, and whether early warning is needed or not is judged. Visual early-warning inside the automobile is conducted through warning lights and warning strips, visual early-warning outside the automobile is conducted through turn lights, hearing early-warning is conducted through a buzzer, multidirectional early-warning is conducted for drivers or automobiles, and higher safety is achieved.

Description

Automobile door opening early warning system and method
Technical field
The present invention relates to technical field of automotive electronics is and in particular to automobile door opening early warning system and method.
Background technology
With the popularization of vehicle, vehicle gets more and more, and vehicle accident is consequently increased, and the performance of vehicle and safety are also more next More paid attention to by people.DAS (Driver Assistant System) effectively can reduce vehicle accident, but it is often used for holding track when travelling is carried For supporting, and the unsafe condition during parking can not be prevented effectively from.During parking, if rear view of vehicle has vehicle (including automobile, motorcycle etc.) passes through, and does not notice that rear situation is easily caused and collide during enabling, and because this collision is led The accident rate causing accounts for the 5%~10% of total road accident rate, and accident is serious, easily causes second accident.Therefore, research one is stayed The technology carrying out enabling early warning during car is particularly important.
Content of the invention
For solving above-mentioned technical problem, the invention provides one kind can carry out opening the door in advance according to road conditions during parking Alert automobile door opening early warning system and method.
For a kind of present invention automobile door opening early warning system, its technical scheme is, including
Main microwave radar: for receiving the target vehicle range information that secondary microwave radar sends, according to target vehicle distance Information judges whether to early warning;
Secondary microwave radar: for detecting target vehicle away from the distance from car, and this range information is sent to main microwave thunder Reach;
Warning lamp: for carrying out lighting early warning according to the early warning control signal that main microwave radar sends.
Further, also include sensor, described sensor is used for judging that passenger or driver have or not enabling and be intended to, and will This signal Real-time Feedback gives main microwave radar.
Further, also include warning strip, described warning strip is used for carrying out according to the early warning control signal of main microwave radar Light early warning.
Further, described pair microwave radar include being symmetricly set in the vehicle tail left and right sides left secondary microwave radar and Right pair microwave radar, described warning lamp includes left side warning lamp and the right side warning lamp being symmetricly set in vehicle doorn inner casing, institute State left side warning strip and the right side warning strip that warning strip includes being symmetricly set in vehicle doorn inner casing.
For a kind of present invention automobile door opening method for early warning, its technical scheme is:
Receive target vehicle and the range information from car during parking, calculate the car of target vehicle according to described range information Fast vbAnd target vehicle collides required running time with from car, according to speed v of target vehiclebJudge target vehicle Travel direction, and described running time is compared with early warning nominal time a, judges whether to early warning.
Further, setting left sensor and right sensor on car door, according to left sensor and right side sensing The magnitude of voltage u of device feedback judges that occupant whether there is to open the door and is intended to, and is intended to judge advanced warning grade according to opening the door.
Further, described effective coverage is lx≤em;ly≤ fm, described lxFor target vehicle distance from car centrage Horizontal range, described lyFor the vertical dimension from tailstock portion for the target vehicle head distance, described e takes 40-50, and described f takes 2-5.
Further, described target vehicle be that target vehicle arrival left secondary is micro- from the car required running time that collides The time t of ripple radar1With the time t reaching right pair microwave radar2, described time t1And t2Calculating process be: t1=l1/vb, t2 =l2/vb, described l1=c/2*t* (△ f1/ b), l2=c/2*t* (△ f2/ b), speed v of described target vehicleb=(c/2f0)* △ f/2, described l1For target vehicle away from the distance from car left secondary microwave radar, described l2For target vehicle away from from car left secondary microwave The distance of radar, described △ f1For the difference on the frequency of left secondary microwave radar transmission signal and receipt signal, described △ f2For right pair microwave Radar emission signal and the difference on the frequency of receipt signal, b is the modulation bandwidth of secondary microwave radar, and t is the modulation letter of secondary microwave radar Number cycle, described △ f is the difference on the frequency of left secondary microwave radar or right pair microwave radar transmission signal and receipt signal, f0For transmitting The mid frequency of ripple, c is the light velocity.
Further, as described vb< 0 or described t1> t2> a or t2> t1During > a, do not carry out early warning;
As described vb≥0、t1< t2When≤a and u=0v, carry out early warning on the left of one-level;
As described vb≥0、t2< t1When≤a and u=0v, carry out early warning on the right side of one-level;
As described vb≥0、t1< t2When≤a and u=bv, carry out two grades of left side early warning;
As described vb≥0、t2< t1When≤a and u=bv, carry out two grades of right side early warning;
Described b is voltage output value during staff proximity transducer.
Further, on the left of described one-level, early warning is to light left side warning lamp, and early warning on the right side of described one-level is to light right side Warning lamp, described two grades left side early warning be light turn lamp, left front, left back steering indicating light, left side warning lamp, left side warning strip and Buzzer warning, described two grades of right side early warning are to light right front turn lamp, right rear directional, right side warning lamp, right side warning strip And buzzer warning.
Beneficial effects of the present invention: road conditions detection is carried out using microwave radar, detection range is remote, detection accuracy is high.Set up More obvious warning strip, when occupant has enabling to be intended to, lights warning strip and carries out early warning, has higher vision effect Really.It is intended to be detected using capacitance sensor clamshell doors, when staff is close, magnitude of voltage can be converted the signal at once and send To main microwave radar, it is swift in response, is more beneficial for two grades of early warning, improve parking safety.Driving is entered using warning lamp, warning strip Interior vision early warning, enters, using steering indicating light, outer vision early warning of driving a vehicle, carries out audition early warning using buzzer, for driver or dealing Vehicle carries out multi-faceted early warning, has higher safety.
Brief description
Fig. 1 is automobile door opening early warning catenation principle figure;
Fig. 2 is effective coverage schematic diagram;
Fig. 3 is the graph of relation of microwave radar transmission signal and receipt signal;
Fig. 4 is the control flow chart of automobile door opening method for early warning;
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
As shown in figure 1, the present invention includes main microwave radar, secondary microwave radar, warning lamp, warning strip, buzzer.Wherein, Secondary microwave radar includes being symmetrically installed the left secondary microwave radar and right pair microwave radar with tailstock both sides, and warning lamp includes symmetrically setting It is placed in left side warning lamp and the right side warning lamp of vehicle doorn inner casing, warning strip includes being symmetricly set in a left side for vehicle doorn inner casing Side warning strip and right side warning strip.Communicated by can line between main microwave radar, secondary microwave radar.
As shown in figure 4, on vehicle during electricity, enabling early warning system completes self-inspection, when the system of discovery is faulty, main microwave thunder Reach control warning lamp with warning strip with dutycycle 50%, frequency 2hz flashes 4 times, and when system is normal, system enters standby mode.When During vehicle parking, detect the state of vehicle by network signal, when judging that vehicle (is 0 from car speed, gear is for parked state P or neutral) when, the activation of enabling early warning system is opened, secondary microwave radar work, and detects motive objects using Continuous Wave with frequency modulation fmcw The distance (as shown in Figure 3) of body.As shown in Fig. 2 when there being vehicle to enter effective coverage, using this vehicle as target vehicle, entering Scanning frequency degree is calculated with from parameters such as spacings.Wherein, effective coverage be target vehicle distance from the level of car centrage away from From lx≤45m;Target vehicle head distance is from vertical dimension l in tailstock portiony≤3m.Target vehicle with collide from car required Running time for target vehicle reach left secondary microwave radar time t1With the time t reaching right pair microwave radar2, time t1 And t2Calculating process be: t1=l1/vb, t2=l2/vb, l1=c/2*t* (△ f1/ b), l2=c/2*t* (△ f2/ b), target carriage Speed vb=(c/2f0) * △ f/2, l1For target vehicle away from the distance from car left secondary microwave radar, l2For target vehicle away from From the distance of car left secondary microwave radar, △ f1Frequency for left secondary microwave radar transmission signal and receipt signal (i.e. reflected signal) Difference, △ f2For the difference on the frequency of right pair microwave radar transmission signal and receipt signal, b is the modulation bandwidth of secondary microwave radar, and t is pair In the modulated signal cycle of microwave radar, △ f is left secondary microwave radar or the frequency of right pair microwave radar transmission signal and receipt signal Rate is poor, f0For the mid frequency of transmitted wave, c is the light velocity.Capacitance sensor detects that driver or the enabling of passenger are intended to simultaneously, When capacitance sensor detect staff range sensor apart from s≤10cm when, the treated chip of capacitance sensor export u= The voltage of 3.5v (i.e. b takes 3.5) gives main microwave radar, is judged as having the action of enabling to be intended to;Otherwise, when detecting apart from s During > 10cm, capacitance sensor exports u=0v, is judged as that the action of no enabling is intended to.
It is in dead ship condition in vehicle, when vehicle enters effective detection zone, main microwave radar is according to vb、t1、t2, u Value comprehensive descision carries out early warning of classifying, and process is as follows:
Work as vb< 0 or t1> t2> 3 or t2> t1During > 3 (i.e. a takes 3), do not carry out early warning;
Work as vb≥0、t1< t2When≤3 and u=0v, carry out early warning on the left of one-level, that is, light left side warning lamp;
Work as vb≥0、t2< t1When≤3 and u=0v, carry out early warning on the right side of one-level, that is, light right side warning lamp;
Work as vb≥0、t1< t2When≤3 and u=3.5v, carry out two grades left side early warning, that is, light turn lamp, left front, left back turn To lamp, left side warning lamp, left side warning strip and buzzer warning;
Work as vb≥0、t2< t1When≤3 and u=3.5v, carry out two grades right side early warning, that is, light right front turn lamp, the right side after turn To lamp, right side warning lamp, right side warning strip and buzzer warning.
Wherein, warning lamp and warning strip are used for lighting in the car, driver or passenger are carried out with vision early warning, buzzer is used In to driver's audition early warning, and steering indicating light is used for lighting outside car, carries out vision early warning to the vehicles or pedestrians passing by.
The above, only the specific embodiment of the present invention is it is noted that any those of ordinary skill in the art exist Disclosed herein technical scope in, the change or replacement that can readily occur in, all should cover protection scope of the present invention it Interior.

Claims (10)

1. a kind of automobile door opening early warning system is it is characterised in that include
Main microwave radar: for receiving the target vehicle range information that secondary microwave radar sends, according to target vehicle range information Judge whether to early warning;
Secondary microwave radar: for detecting target vehicle away from the distance from car, and this range information is sent to main microwave radar;
Warning lamp: for carrying out lighting early warning according to the early warning control signal that main microwave radar sends.
2. automobile door opening early warning system as claimed in claim 1 it is characterised in that: also include sensor, described sensor is used In judging passenger or driver has or not enabling and is intended to, and this signal Real-time Feedback is given main microwave radar.
3. automobile door opening early warning system as claimed in claim 2 it is characterised in that: also include warning strip, described warning strip is used Carry out lighting early warning in the early warning control signal according to main microwave radar.
4. automobile door opening early warning system as claimed in claim 3 it is characterised in that: described pair microwave radar include being symmetrical arranged In left secondary microwave radar and the right pair microwave radar of the vehicle tail left and right sides, described warning lamp includes being symmetricly set in vehicle doorn The left side warning lamp of inner casing and right side warning lamp, described warning strip includes the left side warning being symmetricly set in vehicle doorn inner casing Bar and right side warning strip.
5. a kind of automobile door opening method for early warning it is characterised in that: during parking receive effective coverage in target vehicle with from car away from From information, calculate speed v of target vehicle according to described range informationbAnd target vehicle with collide from car required Running time, according to speed v of target vehiclebJudge the travel direction of target vehicle, and by described running time and early warning mark The a that fixes time compares, and judges whether to early warning.
6. automobile door opening method for early warning as claimed in claim 5 it is characterised in that: the setting left sensor and right side on car door According to the magnitude of voltage u of left sensor and right sensor feedback, side senser, judges that occupant whether there is to open the door and is intended to, And be intended to judge advanced warning grade according to opening the door.
7. automobile door opening method for early warning as claimed in claim 6 it is characterised in that: described effective coverage be lx≤em;ly≤ Fm, described lxFor target vehicle distance from the horizontal range of car centrage, described lyFor target vehicle head distance from tailstock portion Vertical dimension, described e takes 40-50, and described f takes 2-5.
8. automobile door opening method for early warning as claimed in claim 7 is it is characterised in that described target vehicle collides with from car Required running time reaches the time t1 and the time t2 reaching right pair microwave radar of left secondary microwave radar, institute for target vehicle The calculating process stating time t1 and t2 is: t1=l1/vb, t2=l2/vb, described l1=c/2*t* (△ f1/ b), l2=c/2*t* (△f2/ b), speed v of described target vehicleb=(c/2f0) * △ f/2, described l1For target vehicle away from from car left secondary microwave thunder The distance reaching, described l2For target vehicle away from the distance from car left secondary microwave radar, described △ f1Launch letter for left secondary microwave radar Difference on the frequency number with receipt signal, described △ f2For the difference on the frequency of right pair microwave radar transmission signal and receipt signal, b is secondary micro- The modulation bandwidth of ripple radar, t is the modulated signal cycle of secondary microwave radar, and described △ f is left secondary microwave radar or right pair microwave Radar emission signal and the difference on the frequency of receipt signal, f0For the mid frequency of transmitted wave, c is the light velocity.
9. automobile door opening method for early warning as claimed in claim 8 it is characterised in that:
As described vb< 0 or described t1> t2> a or t2> t1During > a, do not carry out early warning;
As described vb≥0、t1< t2When≤a and u=0v, carry out early warning on the left of one-level;
As described vb≥0、t2< t1When≤a and u=0v, carry out early warning on the right side of one-level;
As described vb≥0、t1< t2When≤a and u=bv, carry out two grades of left side early warning;
As described vb≥0、t2< t1When≤a and u=bv, carry out two grades of right side early warning;
Described b is voltage output value during staff proximity transducer.
10. automobile door opening method for early warning as claimed in claim 9 it is characterised in that: on the left of described one-level early warning be light a left side Side warning lamp, early warning on the right side of described one-level is to light right side warning lamp, and described two grades of left side early warning are to light turn lamp, left front, a left side Rear directional, left side warning lamp, left side warning strip and buzzer warning, described two grades of right side early warning are to light right front steering Lamp, right rear directional, right side warning lamp, right side warning strip and buzzer warning.
CN201610785030.7A 2016-08-31 2016-08-31 Automobile door-open early-warning system and method Pending CN106347210A (en)

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107351761A (en) * 2017-07-07 2017-11-17 盯盯拍(深圳)技术股份有限公司 Opening door of vehicle method for early warning and opening door of vehicle prior-warning device
CN107650640A (en) * 2017-09-20 2018-02-02 上海工程技术大学 The method for early warning and early warning system that a kind of automobile parking based on image procossing opens the door
CN109073504A (en) * 2017-12-18 2018-12-21 深圳市大疆创新科技有限公司 Hatch door detection method, system, mobile platform and fog machine
CN109484294A (en) * 2018-11-27 2019-03-19 北京长城华冠汽车科技股份有限公司 The control method of enabling early warning system and vehicle and enabling early warning system
CN111251992A (en) * 2020-01-22 2020-06-09 江铃汽车股份有限公司 Door opening early warning method and system, readable storage medium and automobile
CN113043950A (en) * 2020-07-31 2021-06-29 惠州华阳通用电子有限公司 Vehicle door opening early warning method based on single-transmitting single-receiving radar

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CN203601123U (en) * 2013-10-18 2014-05-21 东风汽车公司 Automobile door opening warning system
CN203766618U (en) * 2013-12-16 2014-08-13 长安大学 Anti-collision system in car door opening process
CN104742844A (en) * 2015-04-02 2015-07-01 吉林大学 Safety door opening early warning device used after automobile is parked

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US20070046446A1 (en) * 2005-09-01 2007-03-01 Ying-Chieh Chang Alarm device for altering opening of vehicle door
CN102745162A (en) * 2012-02-10 2012-10-24 浙江吉利汽车研究院有限公司 Car door security system assembly and control method thereof
US20140118130A1 (en) * 2012-10-25 2014-05-01 Wistron Neweb Corp. Automobile warning method and automobile warning system utilizing the same
CN203601123U (en) * 2013-10-18 2014-05-21 东风汽车公司 Automobile door opening warning system
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CN104742844A (en) * 2015-04-02 2015-07-01 吉林大学 Safety door opening early warning device used after automobile is parked

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107351761A (en) * 2017-07-07 2017-11-17 盯盯拍(深圳)技术股份有限公司 Opening door of vehicle method for early warning and opening door of vehicle prior-warning device
CN107650640A (en) * 2017-09-20 2018-02-02 上海工程技术大学 The method for early warning and early warning system that a kind of automobile parking based on image procossing opens the door
CN109073504A (en) * 2017-12-18 2018-12-21 深圳市大疆创新科技有限公司 Hatch door detection method, system, mobile platform and fog machine
CN109484294A (en) * 2018-11-27 2019-03-19 北京长城华冠汽车科技股份有限公司 The control method of enabling early warning system and vehicle and enabling early warning system
CN111251992A (en) * 2020-01-22 2020-06-09 江铃汽车股份有限公司 Door opening early warning method and system, readable storage medium and automobile
CN113043950A (en) * 2020-07-31 2021-06-29 惠州华阳通用电子有限公司 Vehicle door opening early warning method based on single-transmitting single-receiving radar

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Application publication date: 20170125