CN202345534U - Intelligent warning system for lane changing of automobiles - Google Patents
Intelligent warning system for lane changing of automobiles Download PDFInfo
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- CN202345534U CN202345534U CN2011204492810U CN201120449281U CN202345534U CN 202345534 U CN202345534 U CN 202345534U CN 2011204492810 U CN2011204492810 U CN 2011204492810U CN 201120449281 U CN201120449281 U CN 201120449281U CN 202345534 U CN202345534 U CN 202345534U
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Abstract
The utility model relates to the field of automobile safe driving and discloses an intelligent warning system for lane changing of automobiles. The warning system comprises a front detector and a rear detector, which are used for collecting the running condition information of a target automobile, a velocity sensor for collecting the velocity of the current automobile, an angle sensor for collecting the steering angle of a steering wheel of the current automobile, a micro-processor for processing the running condition information of the target automobile and controlling the display of warning information, a display screen for displaying the velocity of the current automobile, the velocity of the target automobile, and related warning information, and an alarm for generating a danger prompt sound. An intelligent warning method for lane changing of automobiles mainly comprises the steps of: setting the minimum time headway data and Time To Collision (TTC) warning time range in the micro-processor; collecting information of automobiles in front of and behind the current automobile by the detectors; calculating real-time collision time; and displaying lane changing warning information and sending lane changing forbidding prompt sound. The pre-warning system and the pre-warning method disclosed by the utility model can provide accurate lane changing information for a driver in time, thereby reducing a traffic accident.
Description
Technical field
The utility model relates to the safe driving of vehicle field, particularly a kind of intelligentized automobile lane changing forewarn system.
Background technology
On express highway, the changing of vehicle with to overtake other vehicles be common driver's operation behavior, it is a chaufeur according to ambient environment information such as the speed of a motor vehicle of surrounding vehicles, spacings, adjusts and accomplish the comprehensive action process of self driving target strategy.In so complicated process, chaufeur changes safety most probably with the feasibility of overtaking other vehicles and makes judgement improperly, and the vehicle that goes is among the potential collision.At present, change in the process at running car, most of chaufeur all is to carry out the lane changing behavior through visual with experience; Sometimes chaufeur has begun to change, but the variation of changing to has taken place to be unfavorable for the spacing on this moment target track, and the chaufeur that has also is reluctant to abandon changing; Because he returns to original track to rear space inadequately, if when this moment, there was vehicle in passing track the place ahead, the potential danger of changing was just very big; Like this, be easy to cause traffic accident.
At present; There is a large amount of researchists to do correlative study in the early warning both at home and abroad auxiliary the changing of vehicle safety; Its technical scheme great majority are through using high-definition camera, image processor and wheel speed sensors to gather from the car front and back and the information in target track; Be digital signal through gathering change-over circuit with the image transitions of shooting with video-corder then; And detect relative spacing, relative velocity and relative acceleration according to corresponding information, and then some useful informations are provided and provide corresponding early warning signal for the lane for driver conversion by microprocessor.But; Mostly there is a great vice proper in technical scheme now: in case descend at inclement weather such as rainy day, snow sky, greasy weather and in the situation at night, pick up camera is because of receiving the influence of light degree, and the data of collection can produce very big deviation; Even under the situation of exceedingly odious weather, gather less than data; Can bring very serious misleading to chaufeur like this, bury hidden danger to safety traffic, out of reach is really realized the purpose that the lane changing auxiliary security is driven.
Summary of the invention
In order to overcome the deficiency of above-mentioned prior art; The purpose of the utility model is to provide a kind of intelligentized automobile lane changing forewarn system; Gather information accurately through the laser radar detector, adopt microprocessor in time to carry out data handing, and change information through the demonstration different colours of read-out; Can reduce the generation of traffic accident in time for chaufeur provides the information of changing accurately.
In order to reach above-mentioned technical purpose, the utility model adopts following technical scheme to be achieved.
A kind of intelligentized automobile lane changing forewarn system, comprise the preceding detector that is used to gather target vehicle travel conditions information and back detector, be used to gather this vehicle speed speed sensor, be used to gather this car steering wheel angle angular transducer, be used for microprocessor that processing target traveling state of vehicle information and control shows early warning information, be used to show speed and the relevant early warning information of this car and target vehicle read-out, be used to produce the annunciator of dangerous tip sound.
Described microprocessor; Adopt 8 micro controller systems of CMOS; Be installed in the machine box; Its four input port P1.0, P1.1, P1.2, P1.3 are electrically connected with the mouth of preceding detector, back detector, speed sensor and angular transducer according to this, and its two delivery port P1.4, P1.5 are connected with the annunciator input end with read-out successively.
Detector is the identical laser radar of structural behaviour with the back detector before described; The mouth of preceding detector is electrically connected with the P1.0 input port of micro controller system; The mouth of back detector is electrically connected with the P1.1 input port of micro controller system, and they are installed in the forward and backward safety lever center position of vehicle respectively.
Described speed sensor adopts wheel speed sensors, and its mouth is connected with the P1.2 input port of micro controller system, is installed on vehicle the near front wheel.
Described angular transducer adopts rotary angle transmitter, and its mouth is connected with the P1.3 input port of micro controller system, is installed on the steering wheel for vehicle.
Said read-out adopts LCDs or OLED read-out, and its input end is connected with the P1.4 delivery port of micro controller system, is installed on the automobile instrument panel right side.
Described annunciator adopts buzzer phone or moving-coil loudspeaker, and its input end is connected with the P1.5 delivery port of micro controller system, is installed on the back side of room mirror.
Compared with prior art; The advantage of this intelligentized automobile lane changing forewarn system is: 1; Laser radar does not receive the influence of light degree, under the atrocious weather situation, still can survey from the car front and back accurately and target track forward-and-rearward target vehicle, and reliability is high.2, owing to adopt microprocessor, can be fast, in time data message is handled, intelligent, degree of automation is high, speed of response is fast, controller performance is good.3, adopt read-out and warning device, can intuitively show relevant early warning information and send early warning sound that the auxiliary security driving performance is better.
Description of drawings
The structural representation that Fig. 1 provides for the utility model;
Fig. 2 is a vehicle lane conversion early warning diagram of circuit;
Among the figure: 1 is preceding detector; 2 is the back detector; 3 is speed sensor; 4 is angular transducer; 5 is microprocessor; 6 is read-out; 7 is annunciator.
The specific embodiment
Referring to Fig. 1; A kind of intelligentized automobile lane changing forewarn system, comprise the preceding detector 1 that is used to gather target surrounding vehicles travel conditions information and back detector 2, be used to gather this car absolute velocitye speed sensor 3, be used to gather this car steering wheel angle angular transducer 4, be used for microprocessor 5 that processing target traveling state of vehicle information and control shows early warning information, be used to show speed and the relevant early warning information of this car and target vehicle read-out 6, be used to produce the annunciator 7 that danger sound is pointed out; Described microprocessor adopts 8 micro controller systems of CMOS; Be installed in (the concealed interior under-dash of car that is installed in of micro controller system and annunciator) in the machine box; Its four input port P1.0, P1.1, P1.2, P1.3 are electrically connected with the mouth of preceding detector, back detector, speed sensor and angular transducer according to this, and its two delivery port P1.4, P1.5 are connected with the annunciator input end with read-out successively.
Detector is the identical laser radar of structural behaviour with the back detector before described; The mouth of preceding detector is electrically connected with the P1.0 input port of micro controller system; The mouth of back detector is electrically connected with the P1.1 input port of micro controller system, and they are installed in the forward and backward safety lever center position of vehicle respectively; Described speed sensor adopts wheel speed sensors, and its mouth is connected with the P1.2 input port of micro controller system, is installed on vehicle the near front wheel; Described angular transducer adopts rotary angle transmitter, and its mouth is connected with the P1.3 input port of micro controller system, is installed on the vehicle steering; Said read-out; Adopt LCDs or OLED read-out; Its video inputs is connected with the P1.4 delivery port of micro controller system; Be installed on the right side of automobile instrument panel, be used to show, to reach the human-computer interaction function of realizing chaufeur and vehicle from the speed and the relevant early warning information of car with target vehicle; Described annunciator adopts buzzer phone or moving-coil loudspeaker, and its input end is connected with the P1.5 delivery port of micro controller system, is installed on the back side (the concealed interior under-dash of car that is installed in of micro controller system and annunciator) of room mirror.
The working process of the utility model is such:
Referring to Fig. 1, Fig. 2, all devices of native system are by the automobile circuit power supply, and system starts work automatically behind engine starting, and former and later two detectors that are installed on the vehicle continue to survey from car front and back target and front and back, target track target.When target vehicle appears in the target carriage road; They send the target information in the investigative range to microprocessor 5; Target information mainly contains from the relative velocity of car and target vehicle, time headway and from the relative angle of car and target vehicle, microprocessor 5 preestablish with time headway from the close minimum of car be valid data.After microprocessor 5 receives the data message that detector transmits; Time headway numerical value according to minimum is selected target vehicle; After picking out target vehicle, carry out the calculating of collision time TTC (time to collision) at once; Compared by collision time TTC numerical value that is calculated and predefined TTC pre-warning time scope then, when collision time TTC numerical value dropped in a certain interval, microprocessor 5 control display screen 6 showed early warning information with corresponding color; Simultaneously, microprocessor 5 is according to the measured absolute velocitye that can calculate target vehicle from car absolute velocitye and from the relative velocity of car and target vehicle of speed sensor 3.After the processing data information that microprocessor 5 is accomplished this target vehicle; It will be exported corresponding data information and give read-out 6, will demonstrate target vehicle velocity like this on the read-out, show corresponding early warning color bar from vehicle speed and according to collision time TTC.
When collision time TTC >=10s, shown in green of the color display space of read-out 6, remind chaufeur this constantly can carry out and change, have no danger.When 6≤TTC＜10s, the color display space of read-out 6 is shown as yellow bar, remind chaufeur this constantly can select to change, but have certain potential danger.When 0≤TTC＜6s, shown in red of the color display space of read-out 6 is in such cases; If steering wheel angle θ>=5 that collect of angular transducer °, show that chaufeur taking the behavior of changing this moment, at this moment; Microprocessor is given low level control signal of annunciator, starts annunciator automatically and forbids the prompt tone that changes to send, and this forbids alerting drivers changing constantly; Like this, chaufeur can be taked corresponding counter-measure, has well reached the purpose that auxiliary security is driven; If steering wheel angle θ＜5 that collect of angular transducer °, show that the chaufeur cancellation changes, at this moment, microprocessor is given the control signal of a high level of annunciator, automatic closing and alarm device.This intelligent vehicle lane changing early warning process is all handled by the micro controller system internal processes, need not manual operation, has realized intellectuality, the automation of lane changing early warning process.
Present embodiment detector 1 is preceding laser radar, and detector 2 is the back laser radar, does not receive the influence of rainwater and light during work, about 0 °～320 ° at visual angle, about 200 meters of detection ranges.
The present embodiment microprocessor adopts the AT89C52 micro controller system, and internal processes preestablishes collision accident TTC early warning range and sets the minimum time headway that receives laser radar is valid data.TTC is the collision time from car and target vehicle, and its computing formula is TTC=Δ s/ Δ v, and wherein, Δ s is a time headway, and Δ v is the relative velocity from car and target vehicle.According to the correlative study conclusion, when TTC>=10s, it is safe that vehicle is carried out lane changing; When 6≤TTC＜10s, vehicle can be carried out the behavior of changing, but has certain potential danger; When 0≤TTC＜6s, this forbids vehicle changing constantly.According to this research conclusion, the micro controller system internal processes preestablishes the lane changing Three Estate: when TTC>=10s, for freely changing state, micro controller system is given control signal of man machine interface constantly for this, makes to show green bar on the LCDs with this understanding; When 6≤TTC＜10s, this is general precarious position constantly, and micro controller system is given control signal of man machine interface, makes to show yellow bar on the LCDs with this understanding; When 0≤TTC＜6s, this is the emergency risks state constantly, and micro controller system is given control signal of man machine interface; Make with this understanding exhibit red bar on the LCDs, in such cases, if steering wheel angle θ>=5 that angular transducer collects °; Show and chaufeur this moment taking the behavior of changing; At this moment, microprocessor is given low level control signal of annunciator, starts annunciator automatically and forbids the prompt tone that changes to send; If steering wheel angle θ＜5 that collect of angular transducer °, show that the chaufeur cancellation changes, at this moment, microprocessor is given the control signal of a high level of annunciator, automatic closing and alarm device.
This enforcement read-out is 3.5 inch-4.3 an inch LCD display.
Claims (7)
1. intelligentized automobile lane changing forewarn system; It is characterized in that, comprise the preceding detector that is used to gather target vehicle travel conditions information and back detector, be used to gather this vehicle speed speed sensor, be used to gather this car steering wheel angle angular transducer, be used for microprocessor that processing target traveling state of vehicle information and control shows early warning information, be used to show speed and the relevant early warning information of this car and target vehicle read-out, be used to produce the annunciator of dangerous tip sound.
2. a kind of intelligentized automobile lane changing forewarn system according to claim 1; It is characterized in that; Described microprocessor adopts 8 micro controller systems of CMOS, is installed in the machine box; Its four input port P1.0, P1.1, P1.2, P1.3 are electrically connected with the mouth of preceding detector, back detector, speed sensor and angular transducer according to this, and its two delivery port P1.4, P1.5 are connected with the annunciator input end with read-out successively.
3. a kind of intelligentized automobile lane changing forewarn system according to claim 1; It is characterized in that; Detector is the identical laser radar of structural behaviour with the back detector before described; The mouth of preceding detector is electrically connected with the P1.0 input port of micro controller system, and the mouth of back detector is electrically connected with the P1.1 input port of micro controller system, and they are installed in the forward and backward safety lever center position of vehicle respectively.
4. a kind of intelligentized automobile lane changing forewarn system according to claim 1 is characterized in that, described speed sensor adopts wheel speed sensors, and its mouth is connected with the P1.2 input port of micro controller system, is installed on vehicle the near front wheel.
5. a kind of intelligentized automobile lane changing forewarn system according to claim 1 is characterized in that, described angular transducer adopts rotary angle transmitter, and its mouth is connected with the P1.3 input port of micro controller system, is installed on the steering wheel for vehicle.
6. a kind of intelligentized automobile lane changing forewarn system according to claim 1 is characterized in that, said read-out adopts LCDs or OLED read-out, and its input end is connected with the P1.4 delivery port of micro controller system, is installed on the automobile instrument panel right side.
7. a kind of intelligentized automobile lane changing forewarn system according to claim 1 is characterized in that, described annunciator adopts buzzer phone or moving-coil loudspeaker, and its input end is connected with the P1.5 delivery port of micro controller system, is installed on the back side of room mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011204492810U CN202345534U (en) | 2011-11-14 | 2011-11-14 | Intelligent warning system for lane changing of automobiles |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011204492810U CN202345534U (en) | 2011-11-14 | 2011-11-14 | Intelligent warning system for lane changing of automobiles |
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| CN2011204492810U Expired - Fee Related CN202345534U (en) | 2011-11-14 | 2011-11-14 | Intelligent warning system for lane changing of automobiles |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800214A (en) * | 2012-08-27 | 2012-11-28 | 武汉大学 | Vehicle lane change conflict resolution method under vehicle information interaction condition |
| CN102910126A (en) * | 2012-10-30 | 2013-02-06 | 浙江吉利汽车研究院有限公司杭州分公司 | Method and system for safe lane change of auxiliary vehicle |
| CN102963299A (en) * | 2012-10-31 | 2013-03-13 | 樊红娟 | High-reliability and low-false alarm rate highway automobile anti-collision system and method |
| CN103587467A (en) * | 2013-11-21 | 2014-02-19 | 中国科学院合肥物质科学研究院 | Dangerous-overtaking early-warning prompting method and system |
| CN104960468A (en) * | 2015-05-27 | 2015-10-07 | 奇瑞汽车股份有限公司 | Method and device for changing lanes during traveling |
| CN106043313A (en) * | 2016-07-28 | 2016-10-26 | 南昌大学 | Automobile driving lane-changing intelligent guiding device |
| CN108791050A (en) * | 2018-05-07 | 2018-11-13 | 卓有烨 | A kind of prior-warning device for knocking into the back and stopping in emergency |
| CN110077403A (en) * | 2018-01-26 | 2019-08-02 | 丰田自动车株式会社 | Controller of vehicle |
| CN110775057A (en) * | 2019-08-29 | 2020-02-11 | 浙江零跑科技有限公司 | Lane assisting method for analyzing and controlling steering torque based on vehicle-mounted blind zone visual scene |
| CN115063967A (en) * | 2022-05-31 | 2022-09-16 | 河南越秀尉许高速公路有限公司 | Early warning system and early warning method for ACC vehicle running with vehicle |
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2011
- 2011-11-14 CN CN2011204492810U patent/CN202345534U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800214B (en) * | 2012-08-27 | 2014-06-18 | 武汉大学 | Vehicle lane change conflict resolution method under vehicle information interaction condition |
| CN102800214A (en) * | 2012-08-27 | 2012-11-28 | 武汉大学 | Vehicle lane change conflict resolution method under vehicle information interaction condition |
| CN102910126A (en) * | 2012-10-30 | 2013-02-06 | 浙江吉利汽车研究院有限公司杭州分公司 | Method and system for safe lane change of auxiliary vehicle |
| CN102910126B (en) * | 2012-10-30 | 2015-03-04 | 浙江吉利汽车研究院有限公司杭州分公司 | Method and system for safe lane change of auxiliary vehicle |
| CN102963299A (en) * | 2012-10-31 | 2013-03-13 | 樊红娟 | High-reliability and low-false alarm rate highway automobile anti-collision system and method |
| CN102963299B (en) * | 2012-10-31 | 2015-10-28 | 樊红娟 | A kind of highway automobile avoiding collision of highly reliable low false alarm rate |
| CN103587467B (en) * | 2013-11-21 | 2015-11-18 | 中国科学院合肥物质科学研究院 | A kind of danger is overtaken other vehicles early warning and reminding method |
| CN103587467A (en) * | 2013-11-21 | 2014-02-19 | 中国科学院合肥物质科学研究院 | Dangerous-overtaking early-warning prompting method and system |
| CN104960468A (en) * | 2015-05-27 | 2015-10-07 | 奇瑞汽车股份有限公司 | Method and device for changing lanes during traveling |
| CN106043313A (en) * | 2016-07-28 | 2016-10-26 | 南昌大学 | Automobile driving lane-changing intelligent guiding device |
| CN110077403A (en) * | 2018-01-26 | 2019-08-02 | 丰田自动车株式会社 | Controller of vehicle |
| CN108791050A (en) * | 2018-05-07 | 2018-11-13 | 卓有烨 | A kind of prior-warning device for knocking into the back and stopping in emergency |
| CN110775057A (en) * | 2019-08-29 | 2020-02-11 | 浙江零跑科技有限公司 | Lane assisting method for analyzing and controlling steering torque based on vehicle-mounted blind zone visual scene |
| CN115063967A (en) * | 2022-05-31 | 2022-09-16 | 河南越秀尉许高速公路有限公司 | Early warning system and early warning method for ACC vehicle running with vehicle |
| CN115063967B (en) * | 2022-05-31 | 2024-01-26 | 河南越秀尉许高速公路有限公司 | Early warning system and early warning method for ACC vehicle running down along with vehicle |
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Granted publication date: 20120725 Termination date: 20121114 |