Every aspect of life, such as wine, cosmetics, or other items, due to the existence of information asymmetry, people can't easily identify those counterfeit products and question their authenticity. Therefore, the construction of product traceability system is particularly important. On the one hand, transparent product information can protect consumer interests and allow people to eat foods that are assured. On the other hand, traceability system construction can enhance the brand benefits of manufacturers and eliminate fake and shoddy goods. The emergence of important means.
Since the construction of the traceability system has such a major role, what is the status quo of China's development? This article will take you to understand the technical means behind traceability.
Coding technology identifies information using a computer or human-readable symbology, which is a prerequisite for computer processing. The product information is coded in the traceability process, which means that the text information is symbolized so that it becomes quantitative information and is easily processed by the computer.
Bar code technology is the most commonly used automatic data acquisition technology. Barcodes include one-dimensional bar code and two-dimensional bar code. It is a special code that uses photoelectric scanning reading equipment to read and realize data input into a computer. It contains the country, region, manufacturer, product number and other information of the product. Barcode technology is also the most mature and widely used automatic information collection technology.
Radio Frequency Identification Technology
Radio Frequency Identification (RFID), also called electronic tag, is a non-contact automatic information acquisition technology. The principle is to use the spatial coupling transmission characteristics of radio frequency signals to identify target objects and obtain relevant data through radio frequency signals. The receiver can be read within its scope of action, and no manual intervention is required to identify the work.
Electronic data exchange technology
Electronic data exchange technology solves the problem of information exchange between computers and computers. In the process of food traceability, interaction between different information systems will inevitably occur, and electronic data exchange technology is involved at this time. Electronic data exchange involves three parts: computer systems, communications systems and data standards.
Isotope tracing technology
Isotope tracing technology refers to the difference in the natural abundance of isotopes in food materials of different types and different territories, which distinguishes different types of products and their possible sources. The advantages of isotope tracing techniques are that they are not easily counterfeited or are outside the region. The feed ingredients masked.
DNA analysis technology
DNA technology is divided into three processes: DNA acquisition, information storage, and information comparison. Animal DNA identification and identification technology is an emerging identification technology that uses extracted biological DNA samples as identification objects. It has uniqueness, stability, and security that cannot be duplicated.
The traceability system involves many types of technology. The encoding technology, barcode technology, radio frequency identification technology, and electronic data exchange technology are the most basic four technologies, and also include isotope tracing technology and DNA analysis technology.
From the current level of technology, various traceability techniques have advantages and disadvantages. Barcode technology has fast information input, high reliability, and easy label production, but it can only identify producers and certain types of products, and cannot identify specific products. Wireless RF technology can identify products that are a little further away, have higher automation, and store more information. Larger, however, RFID tags have higher costs and technical standards are not uniform; isotope tracing technology makes products less susceptible to counterfeiting, and the disadvantage is that products in similar environments cannot be discerned, and isotope analysis takes a long time.
Each type of technology has its advantages and disadvantages. With the advancement of science and technology, China also actively encourages the integration of emerging technologies to develop traceability systems. In recent years, the birth of such technologies as blockchain, artificial intelligence, big data, and cloud computing has provided new methods and ideas for solving the problem of traceability.
Alibaba announced the use of artificial intelligence to raise pigs to raise pig-raising efficiency and benefits. The Capital-linked Blockchain Research Institute uses blockchains to trace the origin of pigs and increase trust and brand value. In the future, with the development and progress of technological means, it will certainly lead to industrial upgrading and innovation and development.