CN101844541B - Car-coming warning device for rear-view dead zone - Google Patents
Car-coming warning device for rear-view dead zone Download PDFInfo
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- CN101844541B CN101844541B CN2010101797268A CN201010179726A CN101844541B CN 101844541 B CN101844541 B CN 101844541B CN 2010101797268 A CN2010101797268 A CN 2010101797268A CN 201010179726 A CN201010179726 A CN 201010179726A CN 101844541 B CN101844541 B CN 101844541B
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Abstract
The invention relates to a car-coming warning device for a rear-view dead zone, in particular to a warning technology for indirectly prompting moving cars in the rear-view dead zone. The warning device is provided with two additional detectors based on four detectors of a traditional reversing radar; the two additional detectors are installed on the two sides of a rear bumper respectively. The output ends of the six detectors are input through a multipath gating switch in a main control chip, two output pins of the main control chip are connected with two warning lamps through a switch circuit, the two warning lamps are respectively installed on the outward sides of left and right rear-view mirrors, respectively. When a car moves in the dead zone of the rear-view, the detectors behind the car can detect the car and send a signal to a processing chip, and then the warning lamps installed on external sides of the rear-view mirrors can be lightened by the processed signal exciting amplifier, further to provide visible warning to the driver. In order not to influence the normal observation of the rear-view, the luminance of the warning lamps can change along with the environment.
Description
Technical field
The invention belongs to automobile active safety device technique field, be specifically related to a kind of automobile overtaking alarm device.
Background technology
The people of every driving can know, when the needs lane change is gone or turned, often through observing motoring condition and the position that back mirror confirms to send a car in the back, determines whether to implement lane change or turning behavior with this.Yet; Present back mirror all adopts curved glass to process, because the restriction of the curvature of back-mirror glass, when position of sending a car when the back and front vehicle position only differ from half bodywork length; Back car image just in time falls into the vision blind area of back mirror; The drivers cannot see the back car, if lane change this moment is gone or turned, is very easy to take place the side collision accident.In order to overcome the problems referred to above; Automobile vendor has taked some technical solutions at present, as, in same back mirror; Glass down with two different curvature faces is nested together; The glass of deep camber is used for observing the back driving vehicle as normal back mirror, and the glass of small curve is used for observing the back of dropping in the deep camber mirror blind area and sends a car.In addition; Also have a kind of technical scheme, it adopts Radar Technology to survey the vehicle that goes in the back, when this car driver has a mind to lane change; The measured signal of radar is by computer system processor; An actuating unit is sent working signal, let bearing circle shake, warn navigating mate lane change at once or turning with this.
All there is the deficiency of oneself in above-mentioned two kinds of technology.The former is used to observe too little near the minute surface of back car, is difficult for finding the back car, and the drivers is not had warning function, and can not normally bring into play the effect of sending a car of observing especially at the back at rainy day and night.The latter, though function is advanced, can not only find near car, and the remote car of the intention of can finding to overtake other vehicles.But this apparatus structure is complicated, and R&D costs and productive costs are all very high, only is applicable to senior limousine equipment.
Summary of the invention
For overcoming the problems referred to above that exist in the prior art, the present invention provides a kind of car-coming warning device for rear-view dead zone that meets driving habit.This device is reported to the police through the red light emitting diodes that observation is arranged on the back mirror.This device alarm signal is obvious, low production cost.
The following technical scheme of the concrete employing of the present invention:
A kind of automotive rear-view has the car warning device in the blind area; Said warning device increases the two-way probe on the basis of existing reverse alarming radar four road probes; Be installed in the both sides of automobile rear bumper respectively; Promptly be in the lateral location of automobile, said warning device also comprises main control chip and two alarm lamps, it is characterized in that:
The mouth of said six road probes is through the input of the multi-channel gating switch in the said main control chip, and the two-way output pin of main control chip is connected to two alarm lamps through switch circuit respectively, and said two alarm lamps are installed in a side outwardly of left and right sides back mirror respectively;
When sending a car when being in rear view mirror blind zone in the back; Said probe will send set of pulses signal; This signal is handled through the logic control arithmetic and logic unit that multi-channel gating switch gets into main control chip, and said main control chip output two-way drive signal drives two alarm lamps and reports to the police.
This warning device is on the basis of existing reverse alarming radar, to improve to form.Present alarming radar has four road probes, is respectively applied for the obstacle of probe vehicles posterior direction and passes through sound and the wigwag warning.And this device is on the basis of this warning device, to increase two-way probe and control corresponding and executive circuit to reach the purpose of reporting to the police to sending a car in the blind area, side.The two-way probe that increases is installed in the both sides of automobile rear bumper respectively, promptly is in the lateral location of automobile.Its effect is that the moving vehicle that is in the rear view mirror blind zone is implemented monitoring.During the moving vehicle of probe in monitoring the blind area, will send one group of signal, after this signal is handled through control circuit, at high level of corresponding output pin output of main control chip circuit to control circuit.Cause the aerotron conducting through photoconductive cell and resistance series circuit for the aerotron ground level provides electric current, the red light emitting diodes that is in emitter is lighted.
For the ease of navigating mate by day with night can both clear observation light-emitting diode alerting signal, and can not produce and disturb observing back mirror at the NA night alarm light source.The luminosity of this device can change with ambient light brightness.Under the low environment of illumination, the luminous intensity of light-emitting diode also can reduce, in order to avoid cause dazzling phenomenon takes place when observe back mirror night.
The light-emitting diode light beam is installed in a side outwardly of left and right sides back mirror respectively.For what prevent that the back car from thinking that the warning light emitting diode light beam lighted sends by mistake is to turn to or the lane change signal; Need form an outstanding block in the outside of back mirror and be used for blocking the light that the light-emitting diode light beam sends; Cause this light to be observed by this car navigating mate and obtain, back car navigating mate can't be seen.
After using apparatus of the present invention, want lane change, when observing back mirror,, explain that there is moving vehicle at place, blind area, side, can not implement lane change if this moment, emitting red light diode light beam was lighted at navigating mate.Thereby the effect that reaches warning is avoided the generation of side impact accident.
Description of drawings
Fig. 1 warning device probe arrangement plan;
The back mirror of Fig. 2 band light emitting diode light beam;
Fig. 3 back mirror A-A cutaway view;
Fig. 4 car-coming warning device for rear-view dead zone electrical schematic diagram.
The specific embodiment
This device mainly is made up of the alarm lamp, alarm control circuit and the moving body that are installed in the back mirror outside three parts of popping one's head in.
Alarm control circuit is mainly by radar probe SE1-SE6, main control chip 9, gain control resistance R 5 R8, gain control variable resistance VR1, VR2, photoconductive cell 6,7, light emitting diode light beam 5,11, and aerotron T1, T2 composition.
Fig. 1 shows the method for arranging of radar probe.The present invention keeps general Reverse Sensor probe SE1, SE2, SE3, SE4, lets them still evenly arrange along the rear bumper afterbody and realizes normal reverse alarming function.The radar probe SE5, the SE6 that measure vehicle in the backsight blind area are arranged in by position, the automobile side bumper/spoiler left and right sides, so that in the fan-shaped detecting area of radar probe SE5, SE6, can detect tested car body 8.
Fig. 2 shows the method for arranging of alarm lamp on back mirror.Back mirror is by driving mirror bracket 4, shell 1, and eyeglass 2 is formed with outward flange jut 3.Red light emitting diodes light beam 5 and 11 down are embedded in the inboard of outward flange jut 3, see Fig. 3.The warning light that red light emitting diodes light beam 5 and 11 sends can let navigating mate clearly see; But; Because blocking of outward flange jut 3; The back navigating mate of sending a car can not be seen the red alarm signal, its objective is to prevent back car navigating mate from thinking alerting signal by mistake to be turn sign and having an accident.The top down embedding of its outer edges jut 3 photoconductive cell 6 and 7.Its objective is to let light luminance that red light emitting diodes light beam 5 and 11 sends change, in case the observation of bright influence to back mirror crossed in brightness at night with the variation of the light of surrounding environment.Light-emitting diode light beam 5 in the back mirror of the left and right sides and 11 with photoconductive cell 6 and 7 symmetric arrangement.
Control circuit principle of the present invention is following: when sending a car when being in rear view mirror blind zone in the back, it also gets into the fan-shaped detecting area of probe SE5 or probe SE6.Probe SE5 or probe SE6 will send set of pulses signal, and this signal selects a switch to screen to one group of signal that the obstacle echo is arranged and it is delivered to the logic control arithmetic and logic unit through six and handles.To get into behind the treated letter that output driving circuit is exaggerated and at high level of output pin output.This level forms loop current with resistance R 11 or R12 at base stage and the emitter of triode T1 or T2 through photoconductive cell 6 or 7; Make the emitter and collector conducting of aerotron T1 or T2; At this moment; Voltage vcc will act on red light emitting diodes light beam 5 or 11 through T1 or T2 and R1 or R2, make it luminous warning.R1 or R2 are current-limiting resistances.
Consider the traveling comfort of observing back mirror and prevent dazzle at night, the luminosity of the light-emitting diode light beam 5,11 of this device can change according to ambient brightness, and promptly the light of shiny red light-emitting diode light beam 5,11 is bright more more for environment.For this reason, in the base circuit of triode T1 and T2, be connected in series photoconductive cell 6 and 7 respectively.When light was dark, the resistance of photoconductive cell was very big, and the electric current that flows into triode T1 or T2 base stage is less, and triode T1 or T2 are operated in the amplification region, so the warning light that red light emitting diodes light beam 5,11 sends is not very bright.When light was bright, the resistance of photoconductive cell diminished, and the electric current that flows into triode T1 or T2 base stage is bigger, causes triode T1 or T2 to be operated in the saturation conduction state, so the warning light that red light emitting diodes light beam 5 sends is very bright.
Variable resistance VR1 and VR2 regulate the detectivity of probe SE5 or probe SE6 respectively, so that let vehicle in the rear view mirror blind zone just in time drop on to survey in the sector and enough semaphores are arranged with driven for emitting lights diode light beam 5,11.
Navigating mate can be seen and look into back mirror when wanting lane change or turning to, if find red light emitting diodes light beam 5,11 red alarm light is arranged, and just can not implement lane change and turn to, thus the generation of crash-avoidance accident.
Claims (3)
1. in an automotive rear-view blind area car warning device is arranged; Said warning device increases the two-way probe on the basis of existing reverse alarming radar four road probes; Be installed in the both sides of automobile rear bumper respectively; Promptly be in the lateral location of automobile, said warning device also comprises main control chip and two alarm lamps, it is characterized in that:
The mouth of said six road probes is through the input of the multi-channel gating switch in the said main control chip, and the two-way output pin of main control chip is connected to two alarm lamps through switch circuit respectively, and said two alarm lamps are installed in a side outwardly of left and right sides back mirror respectively;
When sending a car when being in rear view mirror blind zone in the back; Said probe will send set of pulses signal; This signal is handled through the logic control arithmetic and logic unit that multi-channel gating switch gets into main control chip, and said main control chip output two-way drive signal drives two alarm lamps and reports to the police;
Said alarm lamp is a light-emitting diode light beam (5; 11), said back mirror comprises outward flange jut (3), said light-emitting diode light beam (5; 11) be embedded in the inboard of outward flange jut (3); Through blocking of this outward flange jut (3), make this car chaufeur to see and the back navigating mate of sending a car can not be seen the warning light of said light-emitting diode light beam (5,11).
2. automotive rear-view according to claim 1 has the car warning device in the blind area, it is characterized in that: said switch circuit is an aerotron, and said drive signal is through photoconductive cell (6; 7) be connected to the base stage of said aerotron; The collecting electrode of aerotron connects positive source, and the emitter of said aerotron is connected to said light-emitting diode light beam (5,11); Through said photoconductive cell (6; 7) make light luminance that said light-emitting diode light beam (5,11) sends change, in case the observation of bright influence to back mirror crossed in brightness at night with the variation of the light of surrounding environment.
3. automotive rear-view according to claim 1 has the car warning device in the blind area, it is characterized in that: said control chip comprises that also (VR1 VR2), is used to regulate the detectivity of the two-way probe that is increased for gain controller and variable resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101797268A CN101844541B (en) | 2010-05-21 | 2010-05-21 | Car-coming warning device for rear-view dead zone |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101797268A CN101844541B (en) | 2010-05-21 | 2010-05-21 | Car-coming warning device for rear-view dead zone |
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| CN101844541A CN101844541A (en) | 2010-09-29 |
| CN101844541B true CN101844541B (en) | 2012-05-23 |
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| CN2010101797268A Active CN101844541B (en) | 2010-05-21 | 2010-05-21 | Car-coming warning device for rear-view dead zone |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106379228B (en) * | 2016-10-26 | 2019-01-29 | 上海康耐司信号设备有限公司 | A kind of lorry astern radar device |
| CN106627379A (en) * | 2017-01-22 | 2017-05-10 | 江苏海华汽车部件有限公司 | Car lane-changing dead zone alarming signal control system and device |
| CN107139725A (en) * | 2017-04-12 | 2017-09-08 | 奇瑞汽车股份有限公司 | A kind of automobile rear traffic detection device and method |
| CN110126741B (en) * | 2019-05-31 | 2024-05-03 | 铁将军汽车电子股份有限公司 | Rearview mirror and blind area detection alarm device thereof |
| CN110281843B (en) * | 2019-06-26 | 2021-04-23 | 浙江吉利控股集团有限公司 | Blind spot monitoring alarm lamp brightness adjusting device and method |
| CN112428923A (en) * | 2020-11-30 | 2021-03-02 | 重庆长安汽车股份有限公司 | Streaming media rearview mirror video automatic display control method and system of full liquid crystal instrument |
| CN114992581B (en) * | 2022-06-22 | 2023-06-02 | 重庆长安新能源汽车科技有限公司 | Lamp for vehicle and automobile |
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| CN2134662Y (en) * | 1992-08-07 | 1993-05-26 | 辽河石油勘探局通信公司 | Automotive rear vision blind area object detector |
| DE19835601B4 (en) * | 1998-08-06 | 2007-05-10 | Volkswagen Ag | Assistance system for vehicles |
| DE10240695A1 (en) * | 2002-09-04 | 2004-03-18 | Adam Opel Ag | Motor vehicle for activating acoustic signals with the use of electric sensors and loudspeakers distributed round the vehicle identifies obstructions regarding parking maneuvers and unclosed doors |
| CN2823047Y (en) * | 2005-09-29 | 2006-10-04 | 凌建军 | Novel device of motor vehicle for side-viewing and rear-viewing |
| US7486200B2 (en) * | 2006-06-19 | 2009-02-03 | Allen Gerber | Recreational vehicle passing warning device |
| CN201272316Y (en) * | 2008-09-09 | 2009-07-15 | 动力新跃(北京)汽车科技有限公司 | Side distance monitoring and alarming system for automobile |
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