Bar code technology is a kind of automatic identification technology developed in computer applications. The bar code that people see in commodities every day is one-dimensional bar code with small information capacity. Generally, the bar code on commodities can only hold 13 Arabic numerals.
In application, it can only rely on the support of the database. Without the database, its application scope will be greatly limited. Therefore, people urgently need recognition technology with large information capacity, high reliability, and low cost. Based on the above reasons, the data matrix QR code came into being.
What is a QR code?
The data matrix QR code is encoded in a rectangular space by the different distribution of black and white pixels in the matrix. In the corresponding element position of the matrix, binary 0010010 quot;1 0010010 quot; is represented by the appearance of point (square point, circle point or other forms), binary 0010010 quot;0 0010010 quot; is represented by the absence of point, and the arrangement and combination of points determine the meaning of matrix QR code. Its technology is a new type of automatic recognition and processing code system based on computer image processing technology and the combination coding principle. Because it can express information in both horizontal and vertical directions at the same time, it can express a large amount of information in a small area, which is called 0010010 quot;portable data file 0010010 quot;. In South Korea, people can use the mobile phone QR code by bus.
Characteristics of QR code
1. 0010010 nbsp;High-density coding, large information capacity can accommodate up to 1850 capital letters or 2710 numbers or 1108 bytes, or more than 500 Chinese characters, dozens of times higher than the information capacity of the ordinary barcode.
2. 0010010 nbsp;The bar code can encode the digital information such as picture, voice, text, signature, fingerprint, etc., and express it with bar code; it can express multiple languages and text; it can represent image data.
3. 0010010 nbsp;With strong fault tolerance and error correction function, the two-dimensional bar code can still be read correctly when it is partially damaged due to perforation, contamination, etc., and the information can still be recovered when the damaged area reaches 25%.
4. 0010010 nbsp;The decoding reliability is high. It is much lower than the common barcode decoding error rate of two parts per million, and the error rate is no more than one part per million.
5. 0010010 nbsp;Encryption measures can be introduced with good security and anti-counterfeiting.
6.Low cost, easy to make, durable.
7. 0010010 nbsp;The shape and size scale of barcode symbols can be changed.
8. A two-dimensional 0010010 nbsp;barcode can be read by a laser or CCD reader.
Current application of QR code
With the development of automatic identification technology, the application of QR code (International Standard BS iso16022) in logistics, post, aviation, automobile, medical / medicine, electronics, general industry, and retail industry is more and more extensive. It is listed in ATA spec2000 standard in the aviation industry. It is widely used in the general industry. The QR code can be directly punched on the metal surface through the needle, laser, electric corrosion, etc. to store all the information of the parts.
The advantages of using QR code for part identification are:
1. 0010010 nbsp;Part identification is unique and permanent.
2. 0010010 nbsp;Parts in use can be tracked.
3. 0010010 nbsp;The WIP can be tracked.
4. It can 0010010 nbsp;carry on the effective supply chain management.
5. 0010010 nbsp;Prevent counterfeiting.
6. 0010010 nbsp;Enhance data security.
7. 0010010 nbsp;The data range is variable.
8. 0010010 nbsp;Reduce human error.
9. 0010010 nbsp;Store more information in smaller areas.
10. 0010010 nbsp;Automatic data acquisition is used to reduce human error in copying.
The advantage of data matrix QR code identification on the surface of metal parts is obvious, but to achieve 100% machine-readable, it is always the technical threshold of QR code application on the metal surface. In this field, Austin company, which has 50 years of experience in marking equipment production, has become a leader. As a professional manufacturer of marking tools and equipment, Austin company has accumulated rich experience in marking two-dimensional code on the metal surface. Austin series point needle pneumatic marking machine, laser marking machine, and electrolyte marking machine perfectly solve the problem of two-dimensional code marking machine on metal parts surface machine-readable problem.
In today 0010010 #39;s industrial field, high efficiency, high automation, and production cost control have become the goal that the industry pursues. The unique and permanent identification of QR code with its high information capacity, automatic machine identification, and low cost will inevitably become the development trend of the industry field in the future