CN203502971U

CN203502971U - Video barcode scanner based on ARM microcontroller

Info

Publication number: CN203502971U
Application number: CN201320478137.9U
Authority: CN
Inventors: 李国辉; 杨宏
Original assignee: Xian University of Posts and Telecommunications
Current assignee: Xian University of Posts and Telecommunications
Priority date: 2013-08-06
Filing date: 2013-08-06
Publication date: 2014-03-26
Anticipated expiration: 2023-08-06

Abstract

The utility model discloses a video barcode scanner based on an ARM microcontroller. The video barcode scanner comprises a camera module, a master control module, a touch screen module and a button circuit. The master control module is connected with the camera module and the touch screen module, and is connected with the button circuit. The utility model solves the problem that the conventional infrared or laser barcode scanning method is inconvenient for energy user to get the information of energy commodity, and the video barcode scanner has the advantages of simple operation, high stability, quick response, high technology and wide application range.

Description

A kind of video bar code scanner based on ARM microcontroller

Technical field

The utility model relates to a kind of video bar code scanner, especially relates to a kind of video bar code scanner based on ARM microcontroller.

Background technology

Commonly use in the market infrared or laser mode scanning bar code, be not easy to the information of each commodity in each user's typing hand, therefore, in the exploitation of electronic product in the urgent need to a kind of each user's typing merchandise news of being convenient to to commodity classify, management and record.

Along with the develop rapidly of embedded technology, proposed a kind of by the method for camera scanning bar code in recent years.It is converted into common camera scanning by bar code scanning mode from present laser or noctovisor scan, and can be embedded in any a mobile phone with camera.Thereby, facilitated classification, management and the record of each user for commodity.From user's angle, this design can allow everyone all information of each commodity in typing hand easily.From social development, the digitizing of each commodity registration is inexorable trend, preventing fake and forged commodity, crack down on smuggling, guarantee that there is vast development prospect in the fields such as date of manufacture of food class commodity and shelf-life.

Utility model content

The defect existing for above-mentioned prior art, the purpose of this utility model is, a kind of video bar code scanner based on ARM microcontroller is provided, solved the problem that infrared or laser mode scanning bar code is in the market not easy to each merchandise news in each user's typing hand, and easy to use, cost is lower.

For achieving the above object, the utility model is by the following technical solutions:

A video bar code scanner based on ARM microcontroller, comprises camera module, main control module, touch screen module and key circuit, and described main control module connects respectively camera module and touch screen module, and main control module connects key circuit.

Further, described camera module is OV7670 camera.

Further, described main control module adopts and take the series monolithic MB9F506 of Fujitsu that Cortex-M3 is kernel.

Further, described touch screen module adopts 4.3 cun of liquid crystal displays, and its core liquid crystal screen control chip is SSD1963.

Further, described key circuit adopts independent keyboard, establishes altogether 2 keys.

The utility model is based on usining MB9F506 that popular in the market CORTEX-M3 is kernel as main control chip, use camera OV7670 to gather the bar code number image information of 300,000 pixels, by binarization method, coloured image is become to black white image, utilize bar code decoding algorithm to decode, then drive and take 4.3 cun of LCDs that SSD1963 is acp chip, the digital picture of bar code and value thereof are presented at respectively the video bar code scanner on liquid crystal display.

Compared with prior art, video bar code scanner based on ARM microcontroller of the present utility model has solved the problem that infrared or laser mode scanning bar code is in the market not easy to each merchandise news in each user's typing hand, and this video bar code scanner is simple to operate, stability is high, reaction is fast, with high content of technology, applied range.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the software the general frame of the video bar code scanner based on ARM microcontroller.

Fig. 3 is software flow figure.

Wherein: 1-camera module; 2-main control module; 3-touch screen module; 4-key circuit.

Embodiment

Below in conjunction with accompanying drawing and a kind of embodiment of the present utility model, be described in detail:

As Fig. 1 discloses a kind of hardware block diagram of the video bar code scanner based on ARM microcontroller, comprise camera module 1, main control module 2, touch screen module 3 and key circuit 4.

Main control module 2 is connected with respectively camera module 1 and touch screen module 3, wherein, is connected with key circuit 4 on main control module 2.

In above-mentioned scanner, camera module 1 adopts OV7670 camera.

Main control module 2 adopts take the series monolithic MB9F506 of Fujitsu that Cortex-M3 is kernel.Because the design original intention of native system is in order to operate on mobile phone terminal, so the selection of MCU just must be selected according to the MCU of current trend smart mobile phone.Cortex-M3 is one of arm processor series, adopts here to take the series monolithic MB9F506 of Fujitsu that Cortex-M3 is kernel, the feature such as this chip has aboundresources, and travelling speed is fast, low price.

Touch screen module 3 adopts 4.3 cun of liquid crystal displays, and its resolution is 480*272, and its core liquid crystal screen control chip is SSD1963.According to system requirements, adopt 4.3 cun of liquid crystal displays, its resolution is 480*272, core liquid crystal screen control chip is SSD1963.Liquid crystal display is mainly to write liquid crystal display to drive, and this drives bottom and hardware direct interface, thus realize liquid crystal initialization, draw point, the operations such as window be set.And top layer is and application interface, realizes setting-out, draw point, draw circle, draw the operations such as button.In bottom operation, the most basic operation is the assign operation to a pixel.The pixel assignment form of this liquid crystal is RGB565 form, such as pure red, and value corresponding in RGB565 is 0xF800, and the value of its corresponding R, G, B is respectively 255,0,0.Understand single pixel assignment method, only need to carry out coding according to the desired sequential of SSD1963.

Key circuit 4 adopts independent keyboard, establishes altogether 2 keys.

As Fig. 2 discloses a kind of software architecture diagram of the video bar code scanner based on ARM microcontroller, comprise that system operation, webcam driver, touch-screen drive, bar code decoding algorithm.Every partial interior operation is externally invisible, but leaves clear and definite interface and other module communications.Webcam driver is responsible for controlling the operation of camera, and the parameters of the command set camera that operation is transmitted according to system, finally transmits effective video information to bar code decoding algorithm; Touch-screen drive to be responsible for is controlled the operation of touch-screen, and according to system operation information to be displayed need to be offered to touch-screen hardware, finally accept the significant figure information that bar code decoding algorithm transmits; 1,0 information that bar code decoding algorithm is responsible for the bar code by webcam driver transmission is decoded as significant figure information according to barcode encoding rule.

As Fig. 3 discloses a kind of software flow pattern of the video bar code scanner based on ARM microcontroller, comprise that each module pin initialization, liquid crystal display initialization, camera initialization, FIFO, data and bar code display are to liquid crystal display.

The using method of a kind of video bar code scanner based on ARM microcontroller of the utility model is as follows:

First, the switch that pushes button powers on to a kind of video bar code scanner based on ARM microcontroller;

Secondly, the bar code of books is aimed to camera;

Finally, liquid crystal display demonstrates data and bar code information.

The foregoing is only a kind of embodiment of the present utility model, it not whole or unique embodiment, the conversion of any equivalence that those of ordinary skills take technical solutions of the utility model by reading the utility model instructions, is claim of the present utility model and contains.

Claims

1. the video bar code scanner based on ARM microcontroller, it is characterized in that: comprise camera module (1), main control module (2), touch screen module (3) and key circuit (4), described main control module (2) connects respectively camera module (1) and touch screen module (3), and main control module (2) connects key circuit (4);

Described camera module (1) is OV7670 camera;

Described main control module (2) adopts take the series monolithic MB9F506 of Fujitsu that Cortex-M3 is kernel;

Described touch screen module (3) adopts 4.3 cun of liquid crystal displays, and its core liquid crystal screen control chip is SSD1963;

Described key circuit (4) adopts independent keyboard, establishes altogether 2 keys.