CN206164681U

CN206164681U - CMOS sensor image collection system based on wiFi wireless transmission

Info

Publication number: CN206164681U
Application number: CN201621143833.4U
Authority: CN
Inventors: 李克勇
Original assignee: Shifang Lian Ming Information Technology Co Ltd
Current assignee: Shifang Lian Ming Information Technology Co Ltd
Priority date: 2016-10-21
Filing date: 2016-10-21
Publication date: 2017-05-10
Anticipated expiration: 2026-10-21

Abstract

The utility model relates to an image acquisition system, especially a CMOS sensor image collection system based on wiFi wireless transmission, including image manipulation chip, singlechip, CMOS sensor, flash light control IC, laser position sensor, gyroscope angle sensor, wiFi module and system power supply module, singlechip and image manipulation chip exchange order and data, singlechip and laser position sensor, the communication of gyroscope angle sensor, the singlechip is supplied power by the system power supply module, image manipulation chip passes through SPI interface and the communication of flash light control IC, and the output and the image manipulation chip of CMOS sensor are connected, and image manipulation chip's output and wiFi module are connected. Adopt the utility model discloses technical scheme's CMOS sensor image collection system based on wiFi wireless transmission has characteristics such as small, low power dissipation, the reliability is high, the interference killing feature is strong, convenient to use is nimble.

Description

The cmos sensor image capturing system being wirelessly transferred based on WiFi

Technical field

The utility model is related to a kind of image capturing system, particularly a kind of cmos sensor being wirelessly transferred based on WiFi Image capturing system.

Background technology

The application of high pixel, large scale image now is increasingly appearing in computer, the development of printing technique In our daily lifes and research work, the high pixel of the thing followed, the image data acquiring demand of big plane are also rapidly produced It is raw.The image capture device such as conventional flatbed scanner and digital camera provides technological means for image data acquiring, it It is indispensable a kind of data acquisition means in life ＆ amusement, scientific research.However, can run into during actual acquisition various Different experimental situation, acquisition targets, so also has to image data acquiring method and more specifically requires, such as will in real time, even Signal of video signal in continuous collection moving object, rotating object, at this moment is difficult to meet requirement with common wire cable test；Such as Test object is a jumbo plane picture, beyond the effective workspace of existing scanner, then the basic nothing of existing scanning device Method completes task.

Utility model content

The purpose of this utility model is to solve above-mentioned technical problem, there is provided a kind of CMOS being wirelessly transferred based on WiFi is passed Sensor image capturing system, the system has small volume, high low in energy consumption, reliability, strong antijamming capability, easy to use and flexible etc. Feature, extends well the working method of traditional images scanner, and in actual data acquisition system non-convention is achieved The effect thought.

To solve above-mentioned technical problem, the utility model employs a kind of cmos sensor figure being wirelessly transferred based on WiFi Picture acquisition system, including picture processing chip, single-chip microcomputer, cmos sensor, flash lamp control IC, laser position sensors, top Spiral shell instrument angular transducer, WiFi module and system power supply module, it is characterised in that：The single-chip microcomputer and described image process chip Via I2C interfaces exchange command and data, the single-chip microcomputer is by SPI interface and the laser position sensors, the gyro Instrument angular transducer communicates, and the single-chip microcomputer is by the system power supply module for power supply；Described image process chip passes through SPI interface Communicate with flash lamp control IC, the output end of the cmos sensor is connected with described image process chip, described image The output end of process chip is connected with the WiFi module.

Further, in above-mentioned technical proposal, described image process chip adopts OV780.

Further, in above-mentioned technical proposal, the cmos sensor adopts OV7740.

Further, in above-mentioned technical proposal, the WiFi module adopts 88W8782.

Further, in above-mentioned technical proposal, the single-chip microcomputer adopts MSP430.

The utility model is had the advantage that：The system is capable of achieving to the scanning of arbitrary dimension plane picture, wireless The function such as transmission and tiled display.Destination image data is obtained exactly, and scanning window can arbitrarily be moved on testee surface Dynamic, rotation, easy to use, the test data of acquisition is accurate.This cmos sensor radio image collecting system, transmission can Lean on, be suitable for various application occasions and use.

Description of the drawings

Fig. 1 is structured flowchart of the present utility model；

Fig. 2 is the utility model system coordinates schematic diagram；

Fig. 3 is the utility model system sensor signal schematic representation.

Specific embodiment

The utility model is further described below in conjunction with the accompanying drawings.

As shown in figure 1, the utility model provides a kind of cmos sensor image capturing system being wirelessly transferred based on WiFi, Including picture processing chip, single-chip microcomputer, cmos sensor, flash lamp control IC, laser position sensors, gyroscope angle sensor Device, WiFi module and system power supply module, it is characterised in that：Single-chip microcomputer is with picture processing chip via I2C interface exchange commands With data, single-chip microcomputer is by system power supply module for power supply；Picture processing chip adopts OV780, is completed to cmos sensor number by it The process of word signal, the management to WiFi module and the code stream form package MJPEG data according to system design.OV780 is Audio, video data high integration processor, key property is that possess 2 mega pixels to take pictures, or the video of VGA resolution 30f/s Encoding and decoding performance, kernel be two low-power consumption 108M CPU, with 8bit YUV utilizing camera interfaces, be internally integrated E2PROM and RAM, can easily provide low cost, without the need for the wireless video transmission solution of external memory storage；Single-chip microcomputer is adopted MSP430, power management, switching on and shutting down and the key-press event for being responsible for whole system is processed.In addition, single-chip microcomputer passes through SPI interface and swashs Optical position sensor, the communication of gyroscope angular transducer, complete the data acquisition work of respective horizontal coordinate and angle information, together When single-chip microcomputer constantly with picture processing chip OV780 via I2C interfaces exchange command and data, upload by the frequency of 30Hz every The coordinate and angle information of two field picture；Picture processing chip controls IC and communicates by SPI interface and flash lamp, cmos sensor Output end is connected with picture processing chip, and it is a high-performance VGA CMOS sensings that cmos sensor adopts OV7740, OV7740 Device, it can provide 60f/s, full frame, compression 8/10bit RAM RGB or YUV image output, possess adjustment exposure, Various Image semantic classification functions such as gamma, white balance, saturation degree, gray scale, bad point elimination and noise suppressed.Picture processing chip Output end is connected with WiFi module, and WiFi module adopts 88W8782, its single-chip integration 802.11 radio frequencies, base band, MAC, CPU With the WLAN SoC of the high integration such as memory.88W8782 provides high-performance, low-power consumption SDIO interface wireless schemes, transmission speed Rate highest supports 150bit/s, and open field communication distance is up to 100m.

As shown in Fig. 2 the purpose of the system is the view data using end of scan continuous acquisition, in receiving terminal by its nothing The image and display for stitching ground splicing and recovery view picture is preserved, so except the image that the cmos sensor of end of scan is gathered is believed Breath, for successive image splicing, in addition it is also necessary to provide the relative position information of each two field picture.Laser position sensors can be provided The X of present image, Y-axis horizontal level relative coordinate, gyroscope angular transducer provides the X, Y, Z axis angle letter of present image Breath, the Z axis angle vertical with plane residing for image is particularly important to successive image joining quality.

As shown in figure 3, system needs the main data signal of collection, including picture signal, the position biography of cmos sensor The horizontal coordinate of sensor and the angle information of angular acceleration transducer.The faster the better for measuring speed of the single-chip microcomputer to each variable, So can to greatest extent reduce the site error of every two field picture.Two variables (x, y) of the system laser position sensors with The frequency of 500Hz is acquired and reports；Gyroscope angular transducer each axle provides a variable (Gx, Gy, Gz), with 400Hz Frequency collection report single-chip microcomputer.Single-chip microcomputer is so that 16 data are to the cumulative summation of increment change of each parameter and preserve down Come, wait OV780 processors to obtain.

Cmos sensor is set as giving picture processing chip OV780 with the speed transmission view data of 30f/s, so OV780 sends request signal to single-chip microcomputer with the frequency of 30Hz, it is desirable to the absolute value of all coordinates of present frame is obtained, according to table 1 The horizontal coordinate of image, angle parameter are sent to picture processing chip, wherein laser sensor surface by shown data form Mass parameter SQ accounts for 8bit, and remaining parameter respectively accounts for 16bit.

Table 1

OV780, by every frame data head of its package to MJPEG, is sent after above-mentioned data message is obtained by WiFi The MJPEG data of 30f/s carry out image mosaic integration process to receiving terminal.

CMOS sensor array is exposure output line by line, so when sensor and testee are relatively rapid mobile, The output of cmos sensor row array represents the testee of different time points, diverse location, causes the image for obtaining to have class Like the distortion of smear, can be by controlling the sequential of flash lamp illumination come the ingenious pattern distortion for solving the problems, such as quick motion.CMOS Vertical synchronizing signal VSYNC and horizontal reference signal HREF of sensor is allocated by the sensor configuration file of OV7740, LED EN enable waveform and are controlled by OV780, and time for exposure of the cmos sensor per frame will be longer than the LED EN times, because image It is unglazed completely black inside scanning window, reasonably controls LED EN start point signals and time, it is possible to control cmos sensor The true time for exposure, so every frame valid pixel that the system scanning end is obtained is about 320 × 480.LED EN terminate rear horse On allow MCU to transmit the coordinate data of form as shown in table 1 to OV780, in inserting it into video frame header.

Specification and drawings of the present utility model are considered as illustrative and not restrictive, on the utility model basis On, those skilled in the art are according to disclosed technology contents, it is not necessary to which performing creative labour just can be to some of them technology Feature makes some and replaces and deform, in protection domain of the present utility model.

Claims

1. the cmos sensor image capturing system being wirelessly transferred based on WiFi, including picture processing chip, single-chip microcomputer, CMOS are passed Sensor, flash lamp control IC, laser position sensors, gyroscope angular transducer, WiFi module and system power supply module, it is special Levy and be：With described image process chip via I2C interfaces exchange command and data, the single-chip microcomputer passes through the single-chip microcomputer SPI interface communicates with the laser position sensors, the gyroscope angular transducer, and the single-chip microcomputer is by the system power supply Module for power supply；Described image process chip controls IC and communicates by SPI interface and the flash lamp, the cmos sensor it is defeated Go out end to be connected with described image process chip, the output end of described image process chip is connected with the WiFi module.

2. the cmos sensor image capturing system being wirelessly transferred based on WiFi according to claim 1, it is characterised in that： Described image process chip adopts OV780.

3. the cmos sensor image capturing system being wirelessly transferred based on WiFi according to claim 1, it is characterised in that： The cmos sensor adopts OV7740.

4. the cmos sensor image capturing system being wirelessly transferred based on WiFi according to claim 1, it is characterised in that： The WiFi module adopts 88W8782.

5. the cmos sensor image capturing system being wirelessly transferred based on WiFi according to claim 1, it is characterised in that： The single-chip microcomputer adopts MSP430.