Research on the application of the hottest automat

  • Detail

Research on the application of automatic identification technology in logistics informatization (Part I)

1 overview

now information resources have become as important strategic resources as materials and energy; The information industry has developed into a sunrise industry and a new economic growth point in the world. The improvement of logistics level is inseparable from the full use of information technology and information resources. In addition to the inherent characteristics of logistics, modern logistics is also closely related to enterprise e-business, customer relationship management (CRM), market information resource development, network information resource development and competitor information resource development. Logistics system is a huge and complex system, especially the whole process logistics, including many links such as information, transportation, warehousing, distribution, handling, packaging and logistics reprocessing. The information flow of each link is very huge. The logistics industry is an emerging industry in China. The actual logistics operation cost of enterprises accounts for more than 30% of the product value. The logistics operation cost is mainly manifested in the large amount of goods in stock and the delayed communication of logistics information, that is, the loss caused by the poor consistency between information flow, logistics and workflow. While the logistics operation cost of enterprises in developed countries accounts for only 12% of the product value, logistics has become one of the main factors restricting the development of enterprises in our country

2. Logistics informatization construction

what is informatization? Informatization must first include the equipment of advanced information equipment; Secondly, it must include the development and utilization of information resources by using advanced information technology. These two points should become the core of informatization. Informatization is a process. Like industrialization and modernization, it is a dynamic process. Logistics informatization construction refers to the process that logistics enterprises fully rely on human resources, widely use a series of modern information technologies such as computer technology, network technology, database technology, artificial intelligence technology and automatic identification technology, deeply develop and widely use various information resources (including logistics, information flow and capital flow) in the logistics system, gradually improve the degree of intensive management of logistics enterprises, and realize automation and visualization. The purpose is to make logistics enterprises have the ability to perceive, respond quickly, adapt, change and innovate to the changes of the whole environment. So as to continuously improve the management level, decision-making efficiency, economic benefits and competitiveness of logistics enterprises. In addition to making full use of modern information technology, it is more important to have a team capable of modern logistics information construction. They are the key to the success and failure of information construction. Nowadays, logistics experts often lack understanding of modern information technology, and the talents who master modern information technology lack understanding of the specific situation, workflow and enterprise functions of the logistics industry. In this way, the developed system will naturally appear in the construction of the system, which is not only expensive, but also may not be used by enterprises

3. Automatic identification technology

in recent years, automatic identification methods have been rapidly popularized and promoted in many service fields, in goods sales and logistics distribution, in the commercial sector, in production enterprises and material circulation. Automatic recognition technology has become a cornerstone of the development and application of other technologies. The automatic recognition technology family has a number of automatic recognition technologies based on different principles, including bar code, radio frequency recognition, magnetic recognition, sound recognition, graphic recognition, optical character recognition, and biometrics that reduce and avoid similar shortcomings. There are no advantages or disadvantages among various automatic recognition technologies, and the most suitable automatic recognition technology can only be determined according to the specific application

(I) bar code system bar code includes one-dimensional bar code and two-dimensional bar code. One dimensional bar code is a binary code. It has many kinds, including ean code, 39 code, cross 25 code, UPC code, 128 code, 93 code, CodeBar code, etc. This code consists of data with parallel lines and separated gaps. These barcodes are arranged according to the predetermined diagram sequence, and the sequence composed of wide and narrow lines or gaps represents the data elements of relevant characters. Two dimensional bar code is a bar code that stores information in two-dimensional space in horizontal and vertical directions, which is called two-dimensional bar code. Two dimensional bar code has the advantage of large information capacity than one-dimensional bar code. There are also many different coding methods for two-dimensional bar codes, which can generally be divided into the following three types: ● linear stacked two-dimensional codes are generated by stacking multiple one-dimensional codes vertically on the basis of one-dimensional bar code coding principle. Such as code 16K, code 49, PDF more secure 417, etc. ● matrix QR code is encoded in a rectangular space through the different distribution of black and white pixels in the matrix. Such as Aztec, Maxi code, QR code, data matrix, etc. ● postal code is encoded by bars of different lengths, which are mainly used for mail coding, such as Postnet, BPO 4-state. The national standard "4.17 bar code" (gb/t), prepared by the China article coding center, was officially promulgated in December 1997. This standard is the first two-dimensional bar code national standard in the field of automatic recognition technology in China. Its formulation marks that the application of PDF417 bar code in China is entering a formal and orderly development stage

(II) optical character recognition the main advantage of optical character recognition system is that it has high information density and can read data with eyes in case of emergency. The application fields of optical symbol recognition system are: production field, service and management field, and banking sector. OCR has two main ways: model comparison and feature extraction. Model comparison is to see the printed font and match this image with the possible selection comparison in the database. Feature extraction is to find structural features and their synthesis to recognize fonts

(III) biometric measurement biometric measurement is a method to identify different individuals by comparing certain human characteristics of the rear pin puller seat that will not be confused. It measures some selected human characteristics digitally, and then compares them with the same characteristics in the person's archives, which can be stored in a card or in a database. In practice, it refers to fingerprint method, speech recognition method and fundus retina recognition method. Because of its simplicity, biometric identification technology is accepted by more people and often used to replace passwords or identity cards

(IV) IC card IC card is a data storage system, which can also have additional computing power (CPU) card when necessary. When working, the IC card is inserted into the reader, and the contact spring of the reader generates current contact with the contact of the IC card. The reader provides energy and timing pulses to the IC card through the contact, and its data transmission is carried out through the bidirectional serial interface (i/o). IC cards can be divided into two types: memory cards and microprocessor cards. Memory card accesses memory through sequential logic circuit. Using this system can also integrate some simple security algorithms. Most of the functions of memory cards are for some special applications, and the flexibility of use is greatly limited, but the price is very cheap. One of the main advantages of IC card is that it can prevent the data stored in it from being accessed and processed maliciously. IC card can make almost all services related to information or cash transactions simpler, safer and more economical

(to be continued)

Copyright © 2011 JIN SHI