CN101840633B - Lane departure warning device used when connecting with global positioning system - Google Patents
Lane departure warning device used when connecting with global positioning system Download PDFInfo
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- CN101840633B CN101840633B CN 200910129247 CN200910129247A CN101840633B CN 101840633 B CN101840633 B CN 101840633B CN 200910129247 CN200910129247 CN 200910129247 CN 200910129247 A CN200910129247 A CN 200910129247A CN 101840633 B CN101840633 B CN 101840633B
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Abstract
The invention relates to a lane departure warning device used when connecting with a global positioning system, a photographic lens is adopted to read a road image which is then transmitted to an electronic control unit that deals with image identification, and a vehicle speed signal provided by the global positioning system is directly connected and adopted in combination to judge whether the driving is dangerous or not, if yes, the signal is transmitted to a warning unit, such as a vision warning unit and/or an audition warning unit and/or a vibration warning unit, so as to send out vision and/or audition and/or vibration warning to achieve the lane departure warning effect, wherein by connecting with and utilizing the vehicle speed signal provided by the global positioning system to replace for connecting with and utilizing a vehicle body signal in the prior art, thus the installation programs of setting the lane departure warning device on the vehicle are greatly reduced, thereby promoting the convenience and using efficiency of installing the lane departure warning device, promoting the acceptance of consumers and being beneficial to popularization of the lane departure warning device.
Description
Technical field
The present invention relates to a kind of lane departure warning device, espespecially a kind of the connection with GPS (GPS) cooperates and can directly utilize vehicle speed signal that GPS provides to reach the lane departure warning device of lane departure warning effect.
Background technology
The vehicles of automobile for popularizing, often installing various electronics additional along with user (driver) needs in recent years is equipped with, such as GPS (global positioning system, GPS), lane departure warning system (Lane Departure Warning System, LDWS), drive recorder (Event DataRecorder, EDR) etc., wherein, GPS (GPS) be utilize a gps receiver such as GPS with C/A code WGS-84 ellipsoidal coordinates with the car locator data in the satellite-signal that receives GPS, and can cooperate default electronic chart (e-map) and display screen so that the area at the present place of driving to be provided, the position, orientation and the speed of a motor vehicle etc. are beneficial to the driver and grasp at any time the driving trend; Because GPS (GPS) has been a matured product, so in its thin section structure of this not elsewhere specified (NES) and use function.
Existing lane departure warning system (LDWS) mainly is to utilize a phtographic lens (camera/imagesensor) to be installed in Che Nei also to face car the place ahead in order to read the road image in car the place ahead, during use as travelling on highway, generally be the white lane line image that reads the track dual-side, and can set up first when mounted track starting point, track end point and car left and right sides deviation sensitivity on their own with as identified parameters; Again the image that reads is inputted the set electronic control unit (ECU of described lane departure warning system (LDWS), electronic control unit) in, described electronic control unit (ECU) mainly comprises a digital signal processor (digital signal processor, DSP) and cooperate a memory cell (memory unit) such as random access memory (random access memory, RAM) to process image identification work; Described electronic control unit (ECU) connects the left and right directions lamp of car or speed of a motor vehicle code table etc. again to obtain and to utilize the car body signal of car, to determine whether the dangerous driving behavior, for example: the speed of a motor vehicle is per hour travelled on highway more than 60 kilometers, and learn that by the car body signal person of driving does not handle the left and right lamp (not changing Lane) that turns, if be line ball or the state that crawls but lane departure warning system (LDWS) picks out garage's direction with respect to lane line, namely stably between two lane lines, do not travel; If identification result is yes, then can signal transmission to warn unit (warning unit) as visual alarm unit (visual warning unit) and/or sense of hearing caution unit (audible warning unit) with start and in order to warning drivers, reach the action function of lane departure warning system (LDWS).
Yet, to so far, existing its electronic control unit of lane departure warning system (LDWS) (ECU) all is outwards to be connected to bearing circle or left and right directions lamp or speed of a motor vehicle code table to obtain car body signal such as left and right directions lamp or the speed of a motor vehicle etc. by wire, be provided as identification and judgement in order to be combined with the lane line image, so that in existing circuit and the outfit that installation lane departure warning system (LDWS) Shi Douhui employs car, relatively easily cause the change of the interior equipment of car and outward appearance; And because each factory's car type is a lot, each car type is equipped also or difference is arranged, and therefore relatively is increased in the degree of difficulty when doing the connection of car body signal; Especially the consumer does not generally like changing in order to install electronic equipment additional or affects equipment and outward appearance in the car of original car, so relative reduce is installed the wish of lane departure warning device, is unfavorable for using universalness and the service efficiency of lane departure warning device; Again, the car inner space is originally just limited, and GPS (GPS) has been adopted by most of car, but with lane departure warning system (LDWS) for individual and must install respectively respectively, not only easily cause the inconvenience of installation, and can't be combined with between the two, relatively also increase manufacturing cost and installation cost, become and install sorry that these electronics are equipped with in the car additional, also the service efficiency of these electronics outfits of relative effect.
As from the foregoing, how to design a lane departure warning device for the consumer can easy installation onboard, especially can replace prior art palpus connection body signal such as the mounting meanss such as left and right directions lamp or the speed of a motor vehicle, by with convenience and the service efficiency that the lane departure warning device promote to be installed and the acceptance that promotes the consumer, be that exigence is arranged, the present invention need to and design for this.
Summary of the invention
Fundamental purpose of the present invention provides the lane departure warning device that a kind of connecting global positioning system uses, it can replace prior art palpus connection body signal such as the mounting meanss such as left and right directions lamp or the speed of a motor vehicle, convenience and service efficiency that the lane departure warning device is installed.
In order to achieve the above object, the invention provides the lane departure warning device that a kind of connecting global positioning system (GPS) uses, comprise a phtographic lens (camera), an electronic control unit (electronic controlunit, ECU) processing identification and a caution unit, wherein said electronic control unit (ECU) also is connected with a GPS (GPS); When using, read road image such as lane line image and transfer to electronic control unit (ECU) by phtographic lens (camera), and described electronic control unit (ECU) is further obtained vehicle speed signal by GPS (GPS), utilize for processing identification and determine whether the dangerous driving behavior in order to be combined with road image, reach the lane departure warning effect if then send caution such as the sense of hearing and/or vision and/or vibration warning; Wherein, by connecting global positioning system (GPS) to obtain vehicle speed signal, connect the prior art of utilizing the car body signal in order to replace, can significantly simplifying onboard, wish arranges the installation exercise program that the lane departure warning device uses, and avoid the prior art must the connection body signal such as complicated program and the shortcoming of left and right directions lamp or the speed of a motor vehicle etc., by so that convenience and the service efficiency of lane departure warning device promote to be installed, and to promote consumer's acceptance and be conducive to the universalness of lane departure warning device.
Still a further object of the present invention provides the lane departure warning device that a kind of connecting global positioning system (GPS) uses, wherein said lane departure warning device can be packaged into a concrete body form as being packaged in the shell body one individual for being installed on appropriate position in the car, as by sucker and support to be fixed on front screen or the instrument panel; Again wherein said phtographic lens (camera) can select to be set directly on the shell body of described lane departure warning device with the use that is combined into one of lane departure warning device, or select to form in addition a single individuality and again by wire-connecting to be connected with the lane departure warning device, such as the shell body at the lane departure warning device one phtographic lens (camera) connectivity port is set and pegs graft for the wire-connecting of phtographic lens (camera), by to meet or to promote lane departure warning device of the present invention in demand or convenience aspect manufacturing, assembling and the installation.
Another purpose of the present invention provides the lane departure warning device that a kind of connecting global positioning system (GPS) uses, wherein said GPS can select to be set directly on the shell body of described lane departure warning device with the use that is combined into one of lane departure warning device, or select to form in addition a single individuality and again by wire-connecting to be connected with the lane departure warning device, such as the shell body at the lane departure warning device one GPS connectivity port is set and pegs graft for the wire-connecting of GPS, by to meet or to promote lane departure warning device of the present invention in manufacturing, convenience or the demand of assembling and installation aspect.
Another purpose of the present invention provides the lane departure warning device that a kind of connecting global positioning system (GPS) uses, it further can arrange at the shell body of lane departure warning device a display screen such as liquid crystal panel (LCDpanel) road image such as the lane line image in order to show that phtographic lens (camera) reads, can adjust the photography orientation of phtographic lens (camera) to read best road image for identification, by the convenience of installing and using lane departure warning device of the present invention with enhancement by described display screen during for installation.
Another purpose of the present invention provides the lane departure warning device that a kind of connecting global positioning system (GPS) uses, it further can arrange at the shell body of lane departure warning device a Composite Video Broadcast Signal connectivity port (CVBS output, Composite Video Broadcast Signal), liquid crystal panel (LCD panel) or projection display equipment such as HUD (Head-Up-Display for extraneous other display screens such as tool large-size, HUD) wire-connecting is pegged graft, can be by described external display screen or HUD (HUD) with the road image watching demonstration phtographic lens (camera) and read such as the magnified image of lane line image for the user.
Another purpose of the present invention provides the lane departure warning device that a kind of connecting global positioning system (GPS) uses, wherein said electronic control unit (ECU) mainly comprises a digital signal processor (digital signalprocessor, DSP) and cooperate a memory cell (memory unit) to process image identification work, wherein said digital signal processor (DSP) can select to utilize an integrated circuit (IC) of integrating to consist of to reach the image identification function, or select to utilize an image to input (video input), one digital signal processing core (DSPcore), one control module (control unit) and a storer (Read-Only Memory, ROM) etc. the integrated circuit (IC) that separates consists of to reach the image identification function, by with promote lane departure warning device of the present invention make and assembling on convenience.
Another purpose of the present invention provides the lane departure warning device that a kind of connecting global positioning system (GPS) uses, wherein said memory cell (memory unit) is to utilize a random access memory (RandomAccess Memory, RAM) consist of, and described random access memory (RAM) further can select to utilize a second generation double data rate Synchronous Dynamic Random Access Memory (Double-Data-Rate SynchronousDynamic Random Access Memory, DDR2SDRAM), by the speed of processing image identification work with enhancement; Further can select again to increase again a programmable read only memory (Electrically ErasableProgrammable Read-Only Memory, EEPROM) to promote the speed of processing image identification work, and/or one flash memory (Flash) to replace storer (the Read-Only Memory that is utilized in the digital signal processor (DSP), ROM), by to meet or to promote lane departure warning device of the present invention in convenience or demand aspect manufacturing, assembling and the installation.
Beneficial effect of the present invention is: by connecting global positioning system (GPS) to obtain vehicle speed signal, connect the prior art of utilizing the car body signal in order to replace, can significantly simplifying onboard, wish arranges the installation exercise program that the lane departure warning device uses, and avoid the prior art must the connection body signal such as complicated program and the shortcoming of left and right directions lamp or the speed of a motor vehicle etc., by so that convenience and the service efficiency of lane departure warning device promote to be installed, and to promote consumer's acceptance and be conducive to the universalness of lane departure warning device.
Description of drawings
Fig. 1 is the structure block schematic diagram of the action function of one embodiment of the invention (digital signal processor DSP selects to utilize an integrated circuit of integrating).
Fig. 2 is the structure block schematic diagram of the action function of another embodiment of the present invention (digital signal processor DSP selects to utilize an integrated circuit of not integrating).
Fig. 3 is the again structure block schematic diagram of the action function of another embodiment (tool circumscribed phtographic lens and GPS (GPS)) of the present invention.
Fig. 4 is stereoscopic (upward angle of visibility) synoptic diagram of one embodiment of the invention (tool circumscribed phtographic lens and GPS (GPS)) and holder combination.
Fig. 5 is stereoscopic (visual angle, the end) synoptic diagram of Fig. 4 embodiment.
Fig. 6 is the stereoscopic synoptic diagram that Fig. 4 embodiment support separates.
Fig. 7 is the perspective exploded view of Fig. 4 embodiment.
Fig. 8 is the schematic flow sheet that the present invention one uses state.
Description of reference numerals: 1-lane departure warning device; 10-phtographic lens (camera); The 11-wire-connecting; 20-electronic control unit (ECU); 21-image-decoding device (video decoder); 22-digital signal processor (DSP); 221-image input (video input); 222-digital signal processing core (DSP core); 223-control module (control unit); 224-storer (ROM); 23-memory cell (memoryunit); 231-double data rate Synchronous Dynamic Random Access Memory (DDR2SDRAM); 232-programmable read only memory (EEPROM); 233-flash memory (Flash); 30-warns unit (warning unit); 31-sense of hearing caution unit (audible warning unit); 32-visual alarm unit (visual warningunit); 33-vibration warning unit (vibrating warning unit); 40-GPS (GPS); The 41-wire-connecting; The concrete body of 50-; 501-phtographic lens connectivity port; 502-GPS (GPS) connectivity port; 503-Composite Video Broadcast Signal (CVBS out put) connectivity port; 504-power connector end mouth; The 505-bellmouth orifice; The 506-LED warning lamp; The 507-function key; 508-liquid crystal panel on ﹠ off switch (LCDON/OFF); 509-horn volume options button; The 51-enclosing cover; 52-liquid crystal panel (LCD panel); 53-liquid crystal panel circuit board (LCD-PCB); 54-main circuit board (main PCB); The 60-support; The 70-display screen; 80-(CVBS) display screen.
Embodiment
For making the present invention more clear and definite full and accurate, now enumerate the preferred embodiments of the present invention and cooperate following diagram, structure of the present invention and technical characterictic thereof are described in detail as after:
The following embodiment that discloses of the present invention, mainly be to be connected the main member of the lane departure warning device (LDWS) that cooperates and the major function that is combined with for one with GPS (GPS) to be illustrated, be not limit wherein lane departure warning system (LDWS) or other members or the structure function of the inside of GPS (GPS), namely each associated components of lane departure warning system (LDWS) or GPS (GPS) or structure function are to carry out many changes, revise, even the equivalence change, as: the structure kenel of the employed phtographic lens of lane departure warning system (LDWS) (camera/image sensor) and/or sound reading device (such as microphone Mic) and installation number do not limit; Or the image sensor of phtographic lens (camera) can be CMOS (Complementary Metal-Oxide-Semiconductor, CMOS (Complementary Metal Oxide Semiconductor)) CCD of video camera or high image quality (Charge Coupled Device, the audio-visual sensing element of photoelectric coupling) video camera; Or do not limit in order to structure kenel or the action function of the electronic control unit (ECU) of processing image identification work, can design such as it and connect in addition other various relevant watch-dogs such as small-sized image sensor or voice sensor (such as lapel mike), rearview mirror display, vehicle display, loudspeaker, telepilot etc.; Therefore the personage who generally is familiar with this skill understands, and disclosed member with drive recorder of function of lane departure warning system is not restricted to the following example structure that discloses.
Please refer to shown in Figure 1ly, it is the systemic effect functional block diagram of one embodiment of the invention.The lane departure warning device 1 that connecting global positioning system of the present invention (GPS) uses is to be installed on the car to use, it mainly comprises a phtographic lens (camera) 10, one electronic control unit (electronic control unit, ECU) 20 and at least one caution unit (warning unit) 30 such as sense of hearing caution unit (visual warning unit) 31 and/or visual alarm unit (audible warning unit) 32 and/or vibration warning unit (viratingwarming) 33, wherein said electronic control unit (ECU) 20 also further is connected with a GPS (GPS) 40, can obtain by described GPS (GPS) 40 vehicle speed signal of car; When using, by phtographic lens 10 to read the lane line image of road image such as highway, and transfer to electronic control unit (ECU) 20 to process image identification work, and described electronic control unit (ECU) 20 is further by connecting a GPS (GPS) 40 to obtain vehicle speed signal at that time, utilize to process identification and determine whether the dangerous driving behavior by electronic control unit (ECU) 20 for being combined with road image, for example: when car just per hour travels on highway more than 60 kilometers with the speed of a motor vehicle, can obtain at that time this moment by GPS (GPS) 40, and the speed of a motor vehicle per hour is the vehicle speed signal more than 60 kilometers and inputs electronic control unit (ECU) 20 with the benchmark as lane departure warning system (LDWS) 1 start-up system effect, when namely lane departure warning system (LDWS) 1 can be set in advance in the speed of a motor vehicle and reaches a certain speed per hour such as per hour 60 kilometers just start-up system effects, and because this set-up function is can be finished by electronic control unit (ECU) 20, so in this not elsewhere specified (NES); And under steam, the road image that is read by phtographic lens 10 as lane departure warning system (LDWS) 1 such as the lane line image of highway and when picking out garage's direction and being line ball or crawling state with respect to lane line, be that car does not stably travel between two lane lines and is judged as dangerous driving, then can come warning drivers such as sense of hearing caution unit (audible warning unit) 31 and/or visual alarm unit (visual warningunit) 32 and/or vibration warning unit (vibrating warning unit) 33 to send alerting to warning unit (warning unit) 30 by electronic control unit (ECU) 20 signal transmissions, reach the action function of lane departure warning system (LDWS).
The present invention is characterized in: the lane departure warning device 1 that connecting global positioning system of the present invention (GPS) uses is to obtain vehicle speed signal by connecting global positioning system (GPS) 40, must directly connect the trouble that the car hardware configuration just can be obtained the car body signal in order to replace prior art, must be connected to bearing circle or left and right directions lamp or speed of a motor vehicle code table by wire such as prior art begins to obtain car body signal such as left and right directions lamp or the speed of a motor vehicle etc., so the present invention can significantly simplify the installation procedure that arranges onboard and use lane departure warning system (LDWS), can promote convenience and service efficiency that the lane departure warning device is installed, and promote consumer's acceptance and the universalness of lane departure warning device, be conducive to car the security on highway of especially travelling of travelling.
The lane departure warning device 1 that connecting global positioning system of the present invention (GPS) uses can be packaged into a concrete body 50 such as Fig. 4-shown in Figure 6, for being installed on appropriate position in the car, the support 60 that utilizes an adjustable angle (as above lower angle) and direction (such as left and right directions) such as cooperation is such as Fig. 4-shown in Figure 6, in order to lane departure warning device 1 simple and easy being pasted and fixed on front screen (windshield) or the instrument panel used.
The image sensing mode of lane departure warning device 1 phtographic lens that uses (camera) 10 that connecting global positioning system of the present invention (GPS) uses does not limit, can be CMOS (Complementary Metal-Oxide-Semiconductor, CMOS (Complementary Metal Oxide Semiconductor)) CCD of video camera or high image quality (Charge CoupledDevice, photoelectric coupling sensing element) video camera; Set-up mode between the concrete body 50 of described phtographic lens (camera) 10 and lane departure warning device 1 does not limit again, can be with manufacturing, assembling or the needs of installing or convenience and change design, phtographic lens (camera) 10 can be selected to be set directly on the concrete body 50 of described lane departure warning device 1 and use as shown in Figure 1 to be combined into one with lane departure warning device 1 as described, or selection forms single concrete body such as a Fig. 3 in addition, shown in Figure 4, and by wire-connecting 11 to be connected with the concrete body 50 of lane departure warning device 1, such as concrete body 50 shells at the lane departure warning device one phtographic lens (camera) connectivity port 501 being set pegs graft for the wire-connecting 11 of phtographic lens (camera) 10, phtographic lens (camera) 10 can be pasted and fixed in addition then that front screen (windshield) is upper to be used, by to meet and to promote lane departure warning device of the present invention in manufacturing, demand or the convenience of assembling and installation aspect.
Set-up mode between the lane departure warning device 1 employed GPS (GPS) 40 that connecting global positioning system of the present invention (GPS) uses and the concrete body 50 of lane departure warning device 1 does not limit, can be with manufacturing, assembling or the needs of installing or convenience and change design, GPS (GPS) 40 can be selected to be set directly on the concrete body 50 of described lane departure warning device 1 and use as shown in Figure 1 to be combined into one with lane departure warning device 1 as described, or selection forms single concrete body such as a Fig. 3 in addition, shown in 4, and by wire-connecting 41 being connected with the concrete body 50 of lane departure warning device 1, such as concrete body 50 shells at the lane departure warning device one GPS (GPS) connectivity port 502 is set and pegs graft for the wire-connecting 41 of GPS (GPS) 40; It is upper using towards sky that the concrete body of GPS (GPS) 40 then can be pasted and fixed on front screen (windshield) in addition, by to meet or to promote lane departure warning device of the present invention in demand or convenience aspect manufacturing, assembling and the installation.
The lane departure warning device 1 that connecting global positioning system of the present invention (GPS) uses, it further can be equipped with a display screen 70 as shown in Figure 1-Figure 3, as the back side (in car) at the concrete body 50 of lane departure warning device 1 arrange a display screen 70 such as liquid crystal panel (LCD panel) such as Fig. 1, Fig. 4, shown in Figure 5, in order to road image such as the lane line image that shows that phtographic lens (camera) 10 reads, make when installing, the photography orientation that can adjust phtographic lenses (camera) 10 by described display screen 70 is can read best road image for identification, and the convenience of lane departure warning device 1 of the present invention is installed and used in enhancement.
The lane departure warning device 1 that connecting global positioning system of the present invention (GPS) uses, it further can be equipped with one can accept Composite Video Broadcast Signal (CVBS, Composite Video Broadcast Signal) circumscribed display screen (CVBS output) 80 as shown in Figure 1-Figure 3, such as the concrete body 50 at the lane departure warning device Composite Video Broadcast Signal (Composite Video Broadcast Signal is set, CVBS) connectivity port 503 is such as Fig. 4, shown in Figure 5, for being connected with an external display screen 80 by wire-connecting, liquid crystal panel (LCD panel) or projection display equipment such as HUD (Head-Up-Display such as the tool large-size, HUD), can be by described external display screen or HUD (HUD) (not shown) to watch magnified image or the related data of demonstration phtographic lens (camera) 10 road images that read such as lane line image for the user.
Shown in Figure 3 with reference to figure 1-again, the lane departure warning device 1 that connecting global positioning system of the present invention (GPS) uses, wherein said electronic control unit (ECU) 20 mainly comprises an image-decoding device (videodecoder) 21 and processes image identification work such as model ADV7180 image-decoding device, a digital signal processor (digital signalprocessor, DSP) 22 and one memory cell (memory unit) 23 with cooperation; Described digital signal processor (DSP) 22 can select to utilize an integrated circuit (IC) of integrating to consist of as shown in Figure 1 to reach the image identification function, or select to utilize by image input (video input) 221, one digital signal processing core (DSP core) 222 is such as model TMS320DM6437, one control module (controlunit) 223 is such as model PIC18F2520 and a storer (ROM, Read-Only Memory) integrated circuit (IC) that separates of 224 grades consists of as shown in Figure 2, reaching the image identification function, by with promote lane departure warning device of the present invention make and assembling on convenience.And the personage who generally is familiar with this skill understands, and the disclosed above example structure is not to limit the formation of digital signal processor used in the present invention (DSP) 22.
Memory cell in the electronic control unit used in the present invention (ECU) 20 (memory unit) the 23rd utilizes a random access memory (Random Access Memory, RAM) consist of, and described random access memory (RAM) 23 further can select to utilize a second generation double data rate Synchronous Dynamic Random Access Memory (Double-Data-Rate Synchronous Dynamic Random Access Memory, DDR2SDRAM) 231 as Figure 1-3, by the speed of processing image identification work with enhancement; Described memory cell (memory unit) 23 further can select to increase a programmable read only memory (Electrically Erasable Programmable Read-Only Memory more again, EEPROM) 232 and/or one flash memory (Flash) 233 with speed that promote to process image identification work as shown in Figure 2, the storer (Read-Only Memory, ROM) 224 that wherein when flash memory (Flash) 233 is set, utilizes in the desirable algebraically word signal processor (DSP) 22; Thus, lane departure warning device of the present invention can met and enhancement demand and convenience aspect manufacturing, assembling and the installation.And the personage who generally is familiar with this skill understands, and the disclosed above example structure is not to limit the formation of memory cell used in the present invention (memoryunit) 23.
Shown in figure 4-7, it is respectively that the present invention is provided with the embodiment of circumscribed phtographic lens 10 and GPS (GPS) 40 and with stereoscopic upward angle of visibility, visual angle, the end synoptic diagram of support 60 combination, separate and perspective exploded view with support; The lane departure warning device 1 that the connecting global positioning system of present embodiment (GPS) uses is to be packaged into a concrete body 50, and can cooperate the support 60 that utilizes an adjustable angle (as above lower angle) and direction (such as a left side in direction) to be pasted and fixed on front screen (windshield) or instrument panel uses with simple and easy, the concrete body 50 of described lane departure warning device 1 mainly comprises enclosing cover 51 as shown in Figure 7, one liquid crystal panel (LCD panel) 52 (being display screen 70), liquid crystal panel circuit board (LCD-PCB) 53 and main circuit board (main PCB) 54 etc., wherein said main circuit board (main PCB) 44 is in order to the layout of all members of comprising electronic control unit of the present invention (ECU) 20; On the enclosing cover 51 of concrete body 50, phtographic lens (camera) connectivity port 501 can be set again, GPS (GPS) connectivity port 502, Composite Video Broadcast Signal (Composite Video Broadcast Signal, CVBS output) connectivity port 503, power connector end mouth 504, the bellmouth orifice 505 of sense of hearing caution unit (audible warning unit) 31, the LED warning lamp 506 of visual alarm unit (visual warning unit) 32, function key 507, liquid crystal panel on ﹠ off switch (LCD ON/OFF) 508 and horn volume options button 509 are like shown in Fig. 4-6; By said structure, make lane departure warning device 1 of the present invention can be conducive to make, assemble and install, and promote the convenience of using.
Lane departure warning device 1 of the present invention in use, identified parameters can be set up on their own by user's end, comprise track starting point, track end point and the car left side of the lane line image of phtographic lens 10 road image that reads such as highway in deviation sensitivity, start-up system just in the time of also can being set in advance in the speed of a motor vehicle and per hour reaching 60 kilometers (Km/hr) namely just starts the alarm function of lane departure warning device 1; In addition, the selectivity of the lane departure warning device being installed for increasing the consumer, the concrete body 50 of lane departure warning device 1 of the present invention can increase by a car body signal connection end mouth, can be external when needing for the consumer.
With reference to shown in Figure 8, it is the action function schematic flow sheet of lane departure warning device 1 of the present invention when the state of use.The action function flow process of lane departure warning device 1 of the present invention comprises following steps: lane departure warning system starts first; Read road image by phtographic lens 10 again; Decode through image-decoding device 21 again, carry out luminance signal by digital signal processor (DSP) 22 again and separate; Again identification or judge whether to detect lane line, if not (NO) then continues detecting; If (YES), then analyze car and whether depart from; (do not depart from) if not, then continue to read road image by phtographic lens 10; If (have and depart from) then obtains the at that time speed of a motor vehicle and analyze the speed of a motor vehicle and whether be higher than setting value and just start caution system when the speed of a motor vehicle per hour reaches 60 kilometers (Km/hr) as being set as first of described car by GPS (GPS) 40 this moment; If not, then do not send caution, if, then signal transmission sends caution to warning unit (warning unit) 30 such as sense of hearing caution unit (audiblewarning unit) 31 and/or visual alarm unit (visual warning unit) 32 and/or vibration warning unit (vibrating warning unit) 33, reaches the use function of lane departure warning device 1 of the present invention.
More than shown in only be the preferred embodiments of the present invention, only be illustrative for the purpose of the present invention, and nonrestrictive.Common knowledge personnel understand at this professional skill field tool, can carry out many changes to it in the spirit and scope that claim of the present invention limits, revise, even the equivalence change, but all will fall within the scope of protection of the present invention.
Claims (11)
1. the lane departure warning device that uses of a connecting global positioning system, it is characterized in that, it is to form a concrete body to use to be installed on the car, and it comprises a phtographic lens, an electronic control unit, a GPS and at least one caution unit, wherein:
Phtographic lens connectivity port, GPS connectivity port, power connector end mouth, the bellmouth orifice of sense of hearing caution unit and the LED warning lamp of visual alarm unit are set on the shell of described concrete body;
Described phtographic lens utilizes wire-connecting to be plugged on the described phtographic lens connectivity port on the shell of described concrete body to be connected with described concrete body, is to read road image before the car, and the image that reads is inputted described electronic control unit;
Described electronic control unit, it comprises an image-decoding device, a digital signal processor and a memory cell, and described electronic control unit is in order to process image identification work;
Described GPS utilizes wire-connecting to be plugged on the described GPS connectivity port on the shell of described concrete body to be connected with described concrete body;
Wherein, described electronic control unit further is connected with described GPS, to be obtained the vehicle speed signal of this car by described GPS;
Wherein, when using, by described phtographic lens to read road image and to transport to described electronic control unit to process image identification work, and described electronic control unit further by the GPS that connects to obtain vehicle speed signal at that time, for processing identification and determine whether the dangerous driving behavior by described electronic control unit, if then signal transmission makes the caution unit send caution with the warning driver to warning the unit.
2. the lane departure warning device of connecting global positioning system use according to claim 1 is characterized in that, further is equipped with the road image of a display screen in order to show that phtographic lens reads on the shell of described concrete body.
3. the lane departure warning device that uses of connecting global positioning system according to claim 1, it is characterized in that, further be equipped with the connectivity port of an output Composite Video Broadcast Signal on the shell of described concrete body, it is connected use by wire-connecting with external display screen.
4. the lane departure warning device of connecting global positioning system use according to claim 3 is characterized in that described external display screen is the HUD of liquid crystal panel or Projection Display mode.
5. the lane departure warning device of connecting global positioning system use according to claim 1 is characterized in that, described digital signal processor is to utilize an integrated circuit of integrating to consist of.
6. the lane departure warning device that uses of connecting global positioning system according to claim 1, it is characterized in that described digital signal processor comprises the integrated circuit that separates of image input, a digital signal processing core, a control module and a storer.
7. the lane departure warning device of connecting global positioning system use according to claim 1 is characterized in that, described memory cell is to utilize a pair of haplotype data rate Synchronous Dynamic Random Access Memory to consist of.
8. the lane departure warning device of connecting global positioning system use according to claim 7 is characterized in that described memory cell further comprises a programmable read only memory and/or a flash memory.
9. the lane departure warning device that uses of connecting global positioning system according to claim 1 is characterized in that, described caution unit comprises in the sense of hearing caution unit, visual alarm unit and the vibration warning unit any or its combination.
10. the lane departure warning device that uses of connecting global positioning system according to claim 1, it is characterized in that, further be provided with at least one function key, a liquid crystal panel on ﹠ off switch and a horn volume options button on the concrete body of described lane departure warning device.
11. the lane departure warning device that connecting global positioning system according to claim 1 uses, it is characterized in that, when described electronic control unit by the GPS that connects when obtaining vehicle speed signal at that time, described vehicle speed signal per hour is set as 60 kilometers or just start the caution unit when above and send caution.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910129247 CN101840633B (en) | 2009-03-19 | 2009-03-19 | Lane departure warning device used when connecting with global positioning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910129247 CN101840633B (en) | 2009-03-19 | 2009-03-19 | Lane departure warning device used when connecting with global positioning system |
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| CN101840633A CN101840633A (en) | 2010-09-22 |
| CN101840633B true CN101840633B (en) | 2013-04-03 |
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| CN 200910129247 Expired - Fee Related CN101840633B (en) | 2009-03-19 | 2009-03-19 | Lane departure warning device used when connecting with global positioning system |
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| CN103616029A (en) * | 2013-12-13 | 2014-03-05 | 国家电网公司 | Vehicle window projection type vehicle-mounted navigation device |
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| CN101840633A (en) | 2010-09-22 |
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