CN105160885A - Vehicle safety driving waning device based on dangerous goods transporting vehicle identification - Google Patents
Vehicle safety driving waning device based on dangerous goods transporting vehicle identification Download PDFInfo
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Abstract
The invention relates to the technical field of vehicles, and specifically relates to a vehicle safety driving waning device based on dangerous goods transporting vehicle identification. The device comprises a vehicle information acquisition module, an information processing module, a voice alarm module, and an auxiliary module. The vehicle information acquisition module includes an image information acquisition module and a front vehicle state information acquisition module. The image information acquisition module is connected with a DSP of the information processing module through a PPI interface. The front vehicle state information acquisition module is connected with the DSP of the information processing module through an I/O serial interface. The voice alarm module is connected with the DSP of the information processing module through an SPI bus. The auxiliary module is connected with the vehicle information acquisition module, the information processing module and the voice alarm module. By identifying the image of a dangerous goods transporting vehicle, detecting the speed of and distance from the vehicle and reminding a driver of the information through voice alarm, the probability of collision with the dangerous goods transporting vehicle is reduced.
Description
Technical field
The present invention relates to technical field of vehicle, specifically a kind of based on the warning device for automobile safety to hazardous materials transportation vehicle identification.
Background technology
Hazardous materials transportation is the one of carriage of special cargo, refers to the transport that special tissue or technician use special car to carry out to unconventional article.There is titanic peril in the transport of dangerous material, does not slightly note causing material damage or casualties.Along with economy develops rapidly, the production of dangerous material, transport and use also present the trend constantly risen, and nowadays China has become the world's hazardous chemical being only second to the U.S. and produces and application big country.While dangerous material promote the well-being of mankind, its transport also brings huge potential safety hazard to us, is nowadays also only limitted to the security control to hazardous materials transportation vehicle about the safety guarantee of hazardous materials transportation, still there are very large security breaches.Such as in June, 2012, a heavy semi-mounted tank wagon was near the Duan Xiagang entrance of riverine expressway highway Nangang, Guangzhou, when resting in the middle of road kerb lane and Emergency Vehicle Lane, by a Sole Proprietorship lorry from rear rear-end impact temporarily, caused traffic hazard.Accident causes the contained solvent oil of tank wagon (load-carrying 40 tons) to leak, and flow to trench drain at the bottom of bridge along Water Drainage of Expressway pipe, meet burning things which may cause a fire disaster and cause detonation, the plank that next outdoor timber processing space of the rapid ignition bridge of big fire is stacked and the builder's temporary shed temporarily built, cause timber processing space nearly thousand squares of log cabin tops to be lifted to fly, cave in, tens of lorries, dollies are all destroyed by fire, cause 20 people dead, 31 people are injured, and wherein 16 people are severely injured.The large-scale sleeping car in Huhehaote City one, the Inner Mongol in August, 2012 bumps against at highway section and a Jiefang brand hazardous materials transportation vehicle rear-end collision, cause methyl alcohol to leak and moment on fire, to cause on sleeping car that 36 people are dead, 3 people are injured.As can be seen here, the injures and deaths that the traffic hazard that vehicle and hazardous materials transportation car bump against causes than the accident of common vehicle are more serious.Therefore, invent and a kind ofly can, to the warning device for automobile safety of hazardous materials transportation vehicle identification, avoid above-mentioned case accident to be very necessary.
Summary of the invention
The invention provides a kind of structure simple, by the identification to danger ahead product haulage vehicle, driver is reminded, avoiding collides with hazardous materials transportation car cause the loss that cannot retrieve based on the warning device for automobile safety to hazardous materials transportation vehicle identification.
Technical solution of the present invention accompanying drawings is as follows:
Based on the warning device for automobile safety to hazardous materials transportation vehicle identification, this device comprises information of vehicles acquisition module 1, message processing module 2, voice alarm module 3 and supplementary module 4; Wherein said information of vehicles acquisition module 1 is used for obtaining the information of traveling ahead vehicle, comprises the information acquisition module of image information acquisition module and front vehicles transport condition; Described message processing module 2 is for the information processing of whole system and control; Described image information acquisition module is connected with the DSP in message processing module 2 by PPI interface; The information acquisition module of described front vehicles transport condition is connected with the DSP in message processing module 2 by I/O serial line interface; Described voice alarm module 3 is connected with the DSP in message processing module 2 by spi bus; Described supplementary module 4 is connected by circuit and information of vehicles acquisition module 1, message processing module 2, voice alarm module 3.
Described image information acquisition module comprises camera 12 and video decoding chip; Described camera 12 is connected with video decoding chip; Described video decoding chip and DSP are connected; Described camera 12 is fixed on directly over shield glass, for gathering front vehicles risk identification image information and passing to video decoding chip; Described video decoding chip is decoded to the video information collected, and analog video signal is converted to the digital signal of setting form, this digital signal is transferred in DSP by PPI interface.
The information acquisition module of described front vehicles transport condition comprises radar sensor 13, Signal-regulated kinase and A/D converter; Described radar sensor 13 is connected with the circuit of Signal-regulated kinase; The circuit of described Signal-regulated kinase is connected with A/D converter again; Described A/D converter and DSP are connected; The mixed analog signal that described radar sensor 13 exports carries out increase input impedance through Signal-regulated kinase to it, reduce output impedance, eliminates the process such as interference wave, operation amplifier, and the simulating signal after process converts digital signal to through A/D converter again and passes in DSP.
Described message processing module 2 also comprises memory module; Described DSP is connected by dma mode and memory module; DSP in described message processing module 2 is used for the information processing of the configuration of video decoding chip, the process of image information and identification, radar sensor 13 and control and the control to voice alarm module 3; Described memory module comprises SDRAM and FLASH two kinds of storage unit; Described SDRAM as Installed System Memory, for the data block that the data volume such as parameter of store images information and algorithm is larger; Described FLASH is used for save routine and data, so that can offline operation.
Described voice alarm module 3 comprises speech chip, filtering circuit and loudspeaker; Described speech chip and filtering circuit are connected, and loudspeaker is connected with filtering circuit; Described DSP sends signal by controlling speech chip, and reach loudspeaker through filtering circuit and played back by the net result of process, DSP is realized by spi bus the control of speech chip.
Described supplementary module 4 comprises power module, clock module and reset circuit; The voltage of automobile storage battery is connected step-down chip by mu balanced circuit and becomes 12V, 12V, 7.5V, 3.3V, 3V to supply camera 12, radar sensor 13, DSP, video decoding chip, speech chip respectively 12V voltage transitions by described power module; Described clock module connects DSP and video decoding chip, for DSP provides the clock of 30MHz, for video decoding chip provides the clock of 27MHz by clock circuit; Described reset circuit and DSP are connected and are used to provide hand-reset and the automatically reset function that powers on.
Beneficial effect of the present invention is: structure of the present invention is simple, by vehicle-mounted camera 12 and radar sensor 13, front vehicles information is passed to processor, and treated device process differentiates.When finding hazardous materials transportation vehicle, reminding driver by the mode of audio alert, the generation of minimizing accident, contributing to the safety traffic of automobile.
Accompanying drawing explanation
Fig. 1 is principle of the invention block diagram;
Fig. 2 is side-looking scheme of installation of the present invention;
To be that the present invention is main look scheme of installation to Fig. 3;
Fig. 4 is workflow diagram of the present invention;
Fig. 5 is image processing process process flow diagram of the present invention;
Fig. 6 is the dangerous mark Prototype drawing in recognition template storehouse of the present invention.
Embodiment
Consult Fig. 1, a kind of based on the warning device for automobile safety to hazardous materials transportation vehicle identification, this device comprises information of vehicles acquisition module 1, message processing module 2, voice alarm module 3 and supplementary module 4; Wherein said information of vehicles acquisition module 1 is used for obtaining the information of traveling ahead vehicle, and such as front truck type of vehicle, the speed of a motor vehicle and spacing, comprise the information acquisition module of image information acquisition module and front vehicles transport condition; Described message processing module 2 is for the information processing of whole system and control; Described picture data obtaining module is connected with the DSP (processor) in message processing module 2 by PPI interface; The information acquisition module of described front vehicles transport condition is connected with the DSP (processor) in message processing module 2 by I/O serial line interface; Described voice alarm module 3 is connected with the DSP (processor) in message processing module 2 by spi bus; Described supplementary module 4 is connected by circuit and information of vehicles acquisition module 1, message processing module 2, voice alarm module 3.
The present invention DSP (processor) used can select the dsp processor of Blackfin series, the processor of the type, except the high-speed computation that possesses common microprocessor and emphasize and controlling functions, can also realize the process such as the collection to signal, conversion valuation, enhancing, compression, identification rapidly.
Consult Fig. 2, Fig. 3, described image information acquisition module comprises camera 12 and video decoding chip; Described camera 12 is connected with video decoding chip; Described video decoding chip and DSP (processor) are connected; Described camera 12 adopts high definition CCD camera to be fixed on directly over shield glass by stationary installation 11.The present invention's video decoding chip used can select model to be the chip of ADV611.Camera 12 is responsible for the risk identification image information gathering front vehicles, and passed to video decoding chip ADV611, video decoding chip ADV611 decodes to the video information collected, and analogue video signal being converted to the digital signal of setting form, this digital signal is transferred in DSP (processor) by PPI interface.
Consult Fig. 2, Fig. 3, the information acquisition module of described front vehicles transport condition comprises radar sensor 13, Signal-regulated kinase and A/D converter; Described radar sensor 13 is arranged on automobile front beam place.Described radar sensor 13 is connected with the circuit of Signal-regulated kinase; Described A/D converter and the circuit of Signal-regulated kinase are connected.The present invention's radar sensor 13 used can adopt 77Ghz radar sensor 13.The mixed analog signal that 77Ghz radar sensor 13 exports carries out increase input impedance through signal adjusting module to it, reduce output impedance, eliminates the process such as interference wave, operation amplifier, and the simulating signal after process converts digital signal to through A/D converter again and passes in processor.
Described message processing module 2 is information processing and the core control portions of whole system, also comprises memory module; Described DSP (processor) is connected by DMA (direct memory access) mode and memory module; DSP (processor) in wherein said message processing module 2 mainly completes the configuration of decoding chip ADV611, the process of image information and identifies with the information processing of, 77Ghz radar sensor 13 and control and the control to voice alarm module 3; Described memory module comprises SDRAM and FLASH two kinds of storage unit; Described SDRAM, as Installed System Memory, is mainly used in the data block that the data volumes such as the parameter of store images information and algorithm are larger; Described FLASH is used for save routine and data, so that can offline operation.
Described voice alarm module 3 comprises speech chip, filtering circuit and loudspeaker; Described speech chip and filtering circuit are connected, and loudspeaker is connected with filtering circuit; The speech chip of the speech chip employing ISD4002 series that the present invention is used.Described DSP (processor) sends signal by controlling speech chip ISD4002, reach loudspeaker through filtering circuit to be played back by the net result of process, DSP (processor) is realized by SPI (Serial Peripheral Interface (SPI)) bus the control of speech chip ISD4002.
Described supplementary module 4 comprises power module, clock module and reset circuit; The voltage of automobile storage battery is connected step-down chip by mu balanced circuit and becomes 12V, 12V, 7.5V, 3.3V, 3V to supply camera 12, radar sensor 13, DSP (processor), video decoding chip, speech chip respectively 12V voltage transitions by described power module; Described clock module connects DSP (processor) and video decoding chip by clock circuit, for DSP (processor) provides the clock of 30MHz, for video decoding chip provides the clock of 27MHz; Described reset circuit and DSP (processor) are connected and are used to provide hand-reset and the automatically reset function that powers on.
Consult Fig. 4,6, specific works process of the present invention is: after automobile starting, high definition CCD camera 12 gathers the single-frame images of front vehicles on the one hand, and be sent to DSP (processor), DSP (processor) by the image of acquisition through image procossing, identification carry out matching primitives with the dangerous mark template in the recognition template storehouse set up according to standard GB/T 13392-2005 in storer.77Ghz radar sensor 13 constantly can send signal to DSP (processor) on the other hand, and DSP (processor) can calculate the Distance geometry speed of a motor vehicle of front vehicles by this signal.If the match is successful, illustrate that front is hazardous materials transportation vehicle, information is sent to speech chip ISD4002 sends " ## rice, front finds ## hazardous materials transportation vehicle, please notes and keeps a safe distance " pattern phonetic warning by loudspeaker by DSP (processor).If mate unsuccessful, then return init state.
The detailed process of its image procossing and identification is consulted shown in Fig. 5, comprises the processes such as Image semantic classification, framing, image character segmentation, image recognition.
Image semantic classification detailed process of the present invention and principle as follows: the image comprising hazardous vehicles and background and sign board collected due to ccd video camera 12 is 24 rgb images of BMP form.It comprises RGB tri-primary colours, because the quantity of information that coloured image comprises will much larger than gray level image, greatly treatment capacity can be increased undoubtedly, so original image is carried out gray processing process when carrying out pre-service to the haulage vehicle image with dangerous mark by us when processing.Now suppose that the pixel of any point in 24 rgb images that ccd video camera photographs is for (i, j), RGB three primary colours component is respectively R (i, j), G (i, j) with B (i, j), when carrying out greyscale transformation, following formula is adopted:
Gray(i，j)＝W
R×R(i，j)+W
G×G(i，j)+W
B×B(i，j)
In above formula, W
r, W
g, W
brepresent the weights that R, G, B three primary colours are corresponding respectively, namely the weight size of these three primary colours in greyscale transformation.
For dangerous mark image, region due to our concern is the character zone of sign board, all the other automobiles and background parts are not considered, therefore require not high to the noise processed of image, do not require to ensure picture quality in good condition yet, so when carrying out noise reduction to the hazardous vehicles image with dangerous mark board, we adopt the method for medium filtering denoising the noise comprised in image and redundant data to be removed.And binary conversion treatment is carried out to image, its disposal route is: suppose that a width gray level image is f (x, y), image after binary conversion treatment is g (x, y), threshold value is T, and so binarization is undertaken by following formula: so binarization is undertaken by following formula:
Framing process of the present invention and principle as follows: framing generally comprises coarse positioning and accurately locates two parts.Adopt and carry out coarse positioning based on mathematical morphology to hazardous materials transportation vehicle mark board, its target is in a width vehicle original image, generally determines the position at sign board place.Again according to the comparatively big difference of the border of sign board and the color in other regions and gray scale, its edge can embody the feature of sudden change on image intensity value, and we adopt rim detection localization method accurately to locate sign board.
Image character cutting procedure of the present invention and principle as follows: according to standard GB13392-2005, the character of hazardous materials transportation vehicle mark board is all Chinese character, but due to its Chinese character quantity not etc., so we will carry out Character segmentation to it.Because Chinese character does not have connectedness, so projection character segmentation method can be adopted to carry out Character segmentation.
Image recognition of the present invention adopts template matches character identifying method to identify sign board character.
Claims (6)
1. based on the warning device for automobile safety to hazardous materials transportation vehicle identification, it is characterized in that, this device comprises information of vehicles acquisition module (1), message processing module (2), voice alarm module (3) and supplementary module (4); Wherein said information of vehicles acquisition module (1) is used for obtaining the information of traveling ahead vehicle, comprises the information acquisition module of image information acquisition module and front vehicles transport condition; Described message processing module (2) is for the information processing of whole system and control; Described image information acquisition module is connected with the DSP in message processing module (2) by PPI interface; The information acquisition module of described front vehicles transport condition is connected with the DSP in message processing module (2) by I/O serial line interface; Described voice alarm module (3) is connected with the DSP in message processing module (2) by spi bus; Described supplementary module (4) is connected by circuit and information of vehicles acquisition module (1), message processing module (2), voice alarm module (3).
2. according to claim 1ly a kind ofly to it is characterized in that based on the warning device for automobile safety to hazardous materials transportation vehicle identification, described image information acquisition module comprises camera (12) and video decoding chip; Described camera (12) and video decoding chip are connected; Described video decoding chip and DSP are connected; Described camera (12) is fixed on directly over shield glass, for gathering front vehicles risk identification image information and passing to video decoding chip; Described video decoding chip is decoded to the video information collected, and analog video signal is converted to the digital signal of setting form, this digital signal is transferred in DSP by PPI interface.
3. according to claim 1 a kind of based on the warning device for automobile safety to hazardous materials transportation vehicle identification, it is characterized in that, the information acquisition module of described front vehicles transport condition comprises radar sensor (13), Signal-regulated kinase and A/D converter; Described radar sensor (13) is connected with the circuit of Signal-regulated kinase; The circuit of described Signal-regulated kinase is connected with A/D converter again; Described A/D converter and DSP are connected; The mixed analog signal that described radar sensor (13) exports carries out increase input impedance through Signal-regulated kinase to it, reduce output impedance, eliminates the process such as interference wave, operation amplifier, and the simulating signal after process converts digital signal to through A/D converter again and passes in DSP.
4. according to claim 1ly a kind ofly to it is characterized in that based on the warning device for automobile safety to hazardous materials transportation vehicle identification, described message processing module (2) also comprises memory module; Described DSP is connected by dma mode and memory module; DSP in described message processing module (2) is used for the information processing of the configuration of video decoding chip, the process of image information and identification, radar sensor and control and the control to voice alarm module (3); Described memory module comprises SDRAM and FLASH two kinds of storage unit; Described SDRAM as Installed System Memory, for the data block that the data volume such as parameter of store images information and algorithm is larger; Described FLASH is used for save routine and data, so that can offline operation.
5. according to claim 1ly a kind ofly to it is characterized in that based on the warning device for automobile safety to hazardous materials transportation vehicle identification, described voice alarm module (3) comprises speech chip, filtering circuit and loudspeaker; Described speech chip and filtering circuit are connected, and loudspeaker is connected with filtering circuit; Described DSP sends signal by controlling speech chip, and reach loudspeaker through filtering circuit and played back by the net result of process, DSP is realized by spi bus the control of speech chip.
6. according to claim 1ly a kind ofly to it is characterized in that based on the warning device for automobile safety to hazardous materials transportation vehicle identification, described supplementary module (4) comprises power module, clock module and reset circuit; The voltage of automobile storage battery is connected step-down chip by mu balanced circuit and becomes 12V, 12V, 7.5V, 3.3V, 3V to supply camera (12), radar sensor (13), DSP, video decoding chip and speech chip respectively 12V voltage transitions by described power module; Described clock module connects DSP and video decoding chip, for DSP provides the clock of 30MHz, for video decoding chip provides the clock of 27MHz by clock circuit; Described reset circuit and DSP are connected and are used to provide hand-reset and the automatically reset function that powers on.
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| CN108764722A (en) * | 2018-05-28 | 2018-11-06 | 西安艾润物联网技术服务有限责任公司 | Hazardous materials transportation vehicles management method, system and computer readable storage medium |
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| CN111523415A (en) * | 2020-04-13 | 2020-08-11 | 北京巨视科技有限公司 | Image-based two-passenger one-dangerous vehicle detection method and device |
| CN113963543A (en) * | 2021-11-03 | 2022-01-21 | 中国矿业大学 | Method and system for identifying road danger of dangerous goods transportation tank car |
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Application publication date: 20151216 |