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條碼讀取采集設備

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條碼讀取采集設備

條碼讀取采集設備廠家



條碼讀取采集設備

  

作為國內外知名包裝智能自動化設備研發企業,上海陸甲自動化科技有限公司的技術服務為中國製造業提供了與國際同步的條碼讀取采集設備技術解決方案。條碼讀取采集設備應用於:製藥、食品、飲料、日化、保健品、電子、電器、化工、汽車工業及塑料與五金等各大行業!


條碼讀取采集設備原理是使用一個光學裝置將條碼的條空信息轉換成電子信息,再由專用譯碼器翻譯成相應的數據信息。由於不同顏色的物體,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,所以當條碼掃描器光源發出的光經光闌及凸透鏡1後,照射到黑白相間的條碼上時,反射光經凸透鏡2聚焦後,照射到光電轉換器上,於是光電轉換器接收到與白條和黑條相應的強弱不同的反射光信號,並轉換成相應的電信號輸出到放大整形電路.白條、黑條的寬度不同,相應的電信號持續時間長短也不同.但是,由光電轉換器輸出的與條碼的條和空相應的電信號一般僅10mV左右,不能直接使用,因而先要將光電轉換器輸出的電信號送放大器放大.放大後的電信號仍然是一個模擬電信號,為了避免由條碼中的疵點和汙點導致錯誤信號,在放大電路後需加一整形電路,把模擬信號轉換成數字電信號,以便計算機係統能準確判讀.


  整形電路的脈衝數字信號經譯碼器譯成數字、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製及掃描方向;通過測量脈衝數字電信號01的數目來判別出條和空的數目.通過測量01信號持續的時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目及相應的寬度和所用碼製,根據碼製所對應的編碼規則,便可將條形符號換成相應的數字、字符信息,通過接口電路送給計算機係統進行數據處理與管理,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.


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