條碼讀取采集設(shè)備

作為國內(nèi)外包裝智能自動化設(shè)備研發(fā)企業(yè),上海陸甲自動化科技有限公司的技術(shù)服務(wù)為中國制造業(yè)提供了與國際同步的條碼讀取采集設(shè)備技術(shù)解決方案。條碼讀取采集設(shè)備應(yīng)用于:制藥、食品、飲料、日化、保健品、電子、電器、化工、汽車工業(yè)及塑料與五金等各大行業(yè)！

條碼讀取采集設(shè)備原理是使用一個(gè)光學(xué)裝置將條碼的條空信息轉(zhuǎn)換成電子信息，再由專用譯碼器翻譯成相應(yīng)的數(shù)據(jù)信息。由于不同顏色的物體，其反射的可見光的波長不同，白色物體能反射各種波長的可見光，黑色物體則吸收各種波長的可見光，所以當(dāng)條碼掃描器光源發(fā)出的光經(jīng)光闌及凸透鏡1后，照射到黑白相間的條碼上時(shí)，反射光經(jīng)凸透鏡2聚焦后，照射到光電轉(zhuǎn)換器上，于是光電轉(zhuǎn)換器接收到與白條和黑條相應(yīng)的強(qiáng)弱不同的反射光信號，并轉(zhuǎn)換成相應(yīng)的電信號輸出到放大整形電路．白條、黑條的寬度不同，相應(yīng)的電信號持續(xù)時(shí)間長短也不同．但是，由光電轉(zhuǎn)換器輸出的與條碼的條和空相應(yīng)的電信號一般僅10mV左右，不能直接使用，因而先要將光電轉(zhuǎn)換器輸出的電信號送放大器放大．放大后的電信號仍然是一個(gè)模擬電信號，為了避免由條碼中的疵點(diǎn)和污點(diǎn)導(dǎo)致錯誤信號，在放大電路后需加一整形電路，把模擬信號轉(zhuǎn)換成數(shù)字電信號，以便計(jì)算機(jī)系統(tǒng)能準(zhǔn)確判讀．

　　整形電路的脈沖數(shù)字信號經(jīng)譯碼器譯成數(shù)字、字符信息．它通過識別起始、終止字符來判別出條碼符號的碼制及掃描方向；通過測量脈沖數(shù)字電信號0、1的數(shù)目來判別出條和空的數(shù)目．通過測量0、1信號持續(xù)的時(shí)間來判別條和空的寬度．這樣便得到了被辯讀的條碼符號的條和空的數(shù)目及相應(yīng)的寬度和所用碼制，根據(jù)碼制所對應(yīng)的編碼規(guī)則，便可將條形符號換成相應(yīng)的數(shù)字、字符信息，通過接口電路送給計(jì)算機(jī)系統(tǒng)進(jìn)行數(shù)據(jù)處理與管理，便完成了條碼辨讀的全過程．

Bar code reading and collecting device

As a well-known packaging intelligent automation equipment research and development enterprise at home and abroad, Shanghai Lujia Automation Technology Co., Ltd. provides technical solutions for Chinese manufacturing industries with bar code reading and acquisition equipment synchronized with the international industry. Widely used in: pharmaceutical, food, beverage, daily chemical, health care products, electronics, electrical appliances, chemicals, automotive industry and plastics and hardware industries!

The principle of bar code reading and collecting device is to use an optical device to convert the stripe information of the bar code into electronic information, which is then translated into corresponding data information by a dedicated decoder. Since objects of different colors have different wavelengths of visible light, white objects can reflect visible light of various wavelengths, and black objects absorb visible light of various wavelengths. Therefore, when the light emitted by the bar code scanner light passes through the aperture and the convex lens 1, When irradiated onto the black and white bar code, the reflected light is focused by the convex lens 2, and then irradiated onto the photoelectric converter, so that the photoelectric converter receives the reflected light signals different in intensity from the white bars and the black bars, and converts them into corresponding The electrical signal is output to the amplification shaping circuit. The width of the white strip and the black strip are different, and the duration of the corresponding electrical signal is also different. However, the electrical signal corresponding to the bar code and the space of the bar code output by the photoelectric converter is generally only about 10 mV, and cannot be directly used. Therefore, the electric signal output from the photoelectric converter is first sent to the amplifier for amplification. The amplified electrical signal is still an analog electrical signal. In order to avoid the error signal caused by defects and stains in the barcode, an shaping circuit is needed after the amplifying circuit to convert the analog signal into a digital electrical signal so that the computer system can accurately interpret the signal. .

The pulsed digital signal of the shaping circuit is translated into digital and character information by the decoder. It identifies the code system and scanning direction of the bar code symbol by identifying the start and end characters; it determines the number of bars and spaces by measuring the number of pulse digital electrical signals 0, 1. Determine the width of the strip and the space by measuring the duration of the 0 and 1 signals. In this way, the number of bars and spaces of the bar code symbols to be read and the corresponding width and the code system used are obtained. According to the coding rules corresponding to the code system, the bar symbols can be replaced with corresponding numbers and character information. The interface circuit is sent to the computer system for data processing and management, and the whole process of bar code reading is completed.