CN205408046U

CN205408046U - Road detection device that freezes based on image is three -dimensional to be handled

Info

Publication number: CN205408046U
Application number: CN201620190502.XU
Authority: CN
Inventors: 李颀; 季雨薇
Original assignee: Shaanxi University of Science and Technology
Current assignee: Shaanxi University of Science and Technology
Priority date: 2016-03-11
Filing date: 2016-03-11
Publication date: 2016-07-27
Anticipated expiration: 2026-03-11

Abstract

The utility model discloses a road detection device that freezes based on image is three -dimensional to be handled, include and erect a plurality of CMOS camera at the road border, CMOS camera connection road terminal unit, road terminal unit is through the server of ethernet transmission line wireless connection distal end, road terminal unit including the CPLD that is used for connecting the CMOS camera and provides its chronogenesis actuating signal, CPLD both way junction DSP, DSP is connected with ethernet transmission line through the image transmission module, the lift -launch of DSP outside is used for saving the SDRAM of the CMOS image that the camera is gathered to through the outside bus connection FLASH of DSP. The utility model discloses can not lead to the fact destruction to the road surface, can realize the measuring of whether freezing on the road and the classification of ice type, compare the accurate optical element that detection device used that freezes in traditional non -contact, the cost is lower.

Description

A kind of icy road detecting device processed based on image three-dimensional

Technical field

This utility model relates to detection field icy on road, is specially a kind of icy road detecting device processed based on image three-dimensional.

Background technology

Road surface froze and often caused serious vehicle accident winter, and time especially light is bad in the morning, driver only cannot judge the ice condition on road surface with vision.Due to ground ice condition in time and the difference of position, there is very big-difference in the ice-like that disappears condition, occurs to can still result in beyond thought accident when dark ice and local ice sheet and occurs.

Existing sensor icy on road is divided into contact with contactless, and contact freezing sensor is typically mounted at curb or is mounted flush against on road surface, but exists and install Maintenance Difficulty, high in cost of production shortcoming, is not appropriate for large area on a highway and uses；And traditional non-contact icing sensor is typically mounted at above road surface side or surface, sensors with auxiliary electrode mostly is optical element and makes, and the requirement of setting angle is high, and environmental requirement is big compared with high and cost, does not therefore introduce use at home in a large number.

Utility model content

The purpose of this utility model is in that for above-mentioned defect of the prior art, it is provided that a kind of icy road detecting device processed based on image three-dimensional, will not road pavement damage, it is possible to realize the classification to the detection whether frozen on road and ice type.

To achieve these goals, the technical solution adopted in the utility model is: including several CMOS camera being erected at road edge, CMOS camera linking-up road terminal unit, road terminal unit is through the server of Ethernet transmission line wireless connections far-end；Described road terminal unit includes for connecting CMOS camera and providing the CPLD of its sequential actuating signal, CPLD is bi-directionally connected DSP, DSP is connected with Ethernet transmission line through image transmission module, the outside SDRAM carried for storing the gathered image of CMOS camera of DSP, and connect FLASH by DSP external bus.

Described DSP adopts ADSP-BF533 type processor.

Described CMOS camera adopts AptinaMT9P031 type color cmos sensor, and resolution is 2590*1942.

Described CMOS camera includes the first CMOS camera and the second CMOS camera that are arranged on road edge parallel, the first CMOS camera and the second CMOS camera and is fixed on identical height by the vertical rod of high 80cm, and is 30 ° with the installation angle of vertical rod.

Described CPLD adopts XC2C384 type programmable logic chip.

Described SDRAM adopts MT48LC32M16A2 type memory chip.

Described FLASH adopts AMLV29A800 type flash chip.

Described image transmission module adopts RTL8019AS type ethernet controller.

Described server adopts x86 type frame structure computer.

Compared with prior art, this utility model has following beneficial effect: gather the situation on road surface to be detected by being erected at several CMOS camera of road edge, by on the image transmitting that collects to server, by image is classified, tentatively draw whether be dry, hydrops, accumulated snow, thin ice or thick ice, if the result of classification is thick ice, then enable two CMOS camera simultaneously, three-dimensional reconstruction is carried out by the binocular stereo vision method based on principle of triangulation, if the surface after rebuilding smooths, it it is clear ice, if the surface irregularity after rebuilding, it is river in Jiangsu Province which flows into the Huangpu River of Shanghai ice.Compared to traditional contact icing detecting device, this device owing to being arranged on upper pavement surface so will not road pavement damage, again owing to this device employs the CMOS camera that cost performance is higher, compared to the precison optical component that traditional non-contact icing detecting device uses, this device less costly.

Accompanying drawing explanation

Fig. 1 circuit structure block diagram of the present utility model；

Fig. 2 mounting means schematic diagram of the present utility model；

In accompanying drawing: 1. road terminal unit；2. Ethernet transmission line；3. server；4.CMOS photographic head；

1-1.CPLD；1-2.DSP；1-3.SDRAM；1-4.FLASH；1-5. image transmission module；4-1. the first CMOS camera；4-2. the second CMOS camera.

Detailed description of the invention

Below in conjunction with accompanying drawing, this utility model is described in further detail.

Referring to Fig. 1,2, this utility model structurally includes two CMOS camera 4 being erected at road edge, and the first CMOS camera 4-1 and the second CMOS camera 4-2 is fixed on identical height by the vertical rod of high 80cm, and is 30 ° with the installation angle of vertical rod.CMOS camera 4 adopts AptinaMT9P031 type color cmos sensor, and distorting little focuses the camera lens from iris setting, and resolution is 2590*1942.CMOS camera 4 linking-up road terminal unit 1, road terminal unit 1 is through the server 3 of Ethernet transmission line 2 wireless connections far-end.Road terminal unit 1 includes for connecting CMOS camera 4 and providing CPLD1-1, the CPLD1-1 of its sequential actuating signal to adopt XC2C384 type programmable logic chip.CPLD1-1 is bi-directionally connected DSP1-2, DSP1-2 and adopts ADSP-BF533 type processor.DSP1-2 is connected with Ethernet transmission line 2 through image transmission module 1-5, and image transmission module 1-5 adopts RTL8019AS type ethernet controller.The outside SDRAM1-3 carried for storing the gathered image of CMOS camera 4 of DSP1-2, SDRAM1-3 adopts MT48LC32M16A2 type memory chip, DSP1-2 connects FLASH1-4 by DSP external bus, FLASH1-4 adopts AMLV29A800 type flash chip, and server 3 adopts the computer of x86 type frame structure.

nullWork process of the present utility model is: CPLD1-1 is sent the instruction gathering image by the DSP1-2 in road terminal unit 1，CPLD1-1 is as the output timing controller of the first CMOS camera 4-1 and the second CMOS camera 4-2 that are arranged on road edge，Make two CMOS camera be taken pictures in road surface to be measured with 2h for the cycle simultaneously，Then the image collected is stored in the SDRAM1-3 of road terminal unit 1 by CPLD1-1，Image in SDRAM1-3 is read out by notice DSP1-2 afterwards，In DSP1-2 first to read image carries out color、The classification of Texture eigenvalue，Tentatively dried、Hydrops、Accumulated snow、Thin ice、Thick five results of ice，If classification results now is thick ice，Two images that two CMOS camera are collected by the technique of binocular stereoscopic vision based on principle of triangulation simultaneously are then utilized to carry out ice sheet surface three dimensional reconstruction，If resurfacing result is uneven, judge on road surface as river in Jiangsu Province which flows into the Huangpu River of Shanghai ice，Otherwise it is then clear ice.The result of detection, classification is sent to server 6 by final DSP1-2 again by Ethernet transmission line 5.

Owing to pavement image collection and treating capacity are big, select ADSP-BF533 type DSP to substantially increase arithmetic speed, and can normal operation in-40 DEG C to+85 DEG C, meet the job requirement under this device adverse circumstances out of doors.This device has also selected the medium that Ethernet transmits as data, owing to Ethernet has transmission speed soon, and the feature of transmission data stabilization, therefore, decrease the error in data in transmitting procedure and loss, it is ensured that the work that system can be stable.

The foregoing is only a kind of embodiment of the present utility model, it is not all of or unique embodiment, the conversion of any equivalence that technical solutions of the utility model are taked by those of ordinary skill in the art by reading this utility model description, is claim of the present utility model and is contained.

Claims

1. the icy road detecting device processed based on image three-dimensional, it is characterized in that: include being erected at several CMOS camera (4) of road edge, CMOS camera (4) linking-up road terminal unit (1), road terminal unit (1) is through the server (3) of Ethernet transmission line (2) wireless connections far-end；Described road terminal unit (1) includes for connecting CMOS camera (4) and providing the CPLD (1-1) of its sequential actuating signal, CPLD (1-1) is bi-directionally connected DSP (1-2), DSP (1-2) is connected with Ethernet transmission line (2) through image transmission module (1-5), the outside lift-launch of DSP (1-2) is used for storing the SDRAM (1-3) of CMOS camera (4) gathered image, and connects FLASH (1-4) by DSP external bus.

2. the icy road detecting device processed based on image three-dimensional according to claim 1, it is characterised in that: described DSP (1-2) adopts ADSP-BF533 type processor.

3. the icy road detecting device processed based on image three-dimensional according to claim 1, it is characterised in that: described CMOS camera (4) adopts AptinaMT9P031 type color cmos sensor, and resolution is 2590*1942.

4. the icy road detecting device processed based on image three-dimensional according to claim 1 or 3, it is characterized in that: described CMOS camera (4) includes being arranged on parallel the first CMOS camera (4-1) and second CMOS camera (4-2) of road edge, first CMOS camera (4-1) and the second CMOS camera (4-2) are fixed on identical height by the vertical rod of high 80cm, and are 30 ° with the installation angle of vertical rod.

5. the icy road detecting device processed based on image three-dimensional according to claim 1, it is characterised in that: described CPLD (1-1) adopts XC2C384 type programmable logic chip.

6. the icy road detecting device processed based on image three-dimensional according to claim 1, it is characterised in that: described SDRAM (1-3) adopts MT48LC32M16A2 type memory chip.

7. the icy road detecting device processed based on image three-dimensional according to claim 1, it is characterised in that: described FLASH (1-4) adopts AMLV29A800 type flash chip.

8. the icy road detecting device processed based on image three-dimensional according to claim 1, it is characterised in that: described image transmission module (1-5) adopts RTL8019AS type ethernet controller.

9. the icy road detecting device processed based on image three-dimensional according to claim 1, it is characterised in that: described server (3) adopts x86 type frame structure computer.