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不干胶贴标机产品检测设备条码追溯系统自动化生产线

条码读取采集设备

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条码读取采集设备

条码读取采集设备厂家



条码读取采集设备

  

作为国内外知名包装智能自动化设备研发企业,上海陆甲自动化科技有限公司的技术服务为中国制造业提供了与国际同步的条码读取采集设备技术解决方案。条码读取采集设备应用于:制药、食品、饮料、日化、保健品、电子、电器、化工、汽车工业及塑料与五金等各大行业!


条码读取采集设备原理是使用一个光学装置将条码的条空信息转换成电子信息,再由专用译码器翻译成相应的数据信息。由于不同颜色的物体,其反射的可见光的波长不同,白色物体能反射各种波长的可见光,黑色物体则吸收各种波长的可见光,所以当条码扫描器光源发出的光经光阑及凸透镜1后,照射到黑白相间的条码上时,反射光经凸透镜2聚焦后,照射到光电转换器上,于是光电转换器接收到与白条和黑条相应的强弱不同的反射光信号,并转换成相应的电信号输出到放大整形电路.白条、黑条的宽度不同,相应的电信号持续时间长短也不同.但是,由光电转换器输出的与条码的条和空相应的电信号一般仅10mV左右,不能直接使用,因而先要将光电转换器输出的电信号送放大器放大.放大后的电信号仍然是一个模拟电信号,为了避免由条码中的疵点和污点导致错误信号,在放大电路后需加一整形电路,把模拟信号转换成数字电信号,以便计算机系统能准确判读.


  整形电路的脉冲数字信号经译码器译成数字、字符信息.它通过识别起始、终止字符来判别出条码符号的码制及扫描方向;通过测量脉冲数字电信号01的数目来判别出条和空的数目.通过测量01信号持续的时间来判别条和空的宽度.这样便得到了被辩读的条码符号的条和空的数目及相应的宽度和所用码制,根据码制所对应的编码规则,便可将条形符号换成相应的数字、字符信息,通过接口电路送给计算机系统进行数据处理与管理,便完成了条码辨读的全过程.

 

 

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.


询价

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