Universal read-write machine communicating protocol based on EPC read-write machine specification

Abstract

A general reader communication agreement based on EPC reader agreement comprises a reader and writer layer, an information layer, a transmission layer; wherein, the reader and writer layer are responsible to abstract an operation request of users to a method and an attribute of an executed object which is then transmitted to the information layer, or to receive the method and the attribute of an operated object and the executed object from the information layer to transform into requirements; the information layer is responsible to encapsulate the method and the attribute of the object which is abstracted out by the reader and writer layer into a request message, or to tell out the method and the attribute of the operated object from the receiving and request message of the transmission layer; simultaneously, the host computer processing request message actively responds to the processing, and the reader processing and receiving request message actively responds to the processing and sending; the transmission layer is responsible to send the well-encapsulated message of the information layer to one end of the network, to receive the message sent from the other end, and then to sent the message to the information layer. The invention establishes the unified and general reader equipment communication agreement, reduces the difficulties in the integration of heterogeneous system and in the application and development of the upper layer, and further enhances the frequency identification adaptability.

Description

technical field [0001] The invention relates to a general RFID reader-writer communication protocol, in particular to a general RFID reader-writer communication protocol based on EPC protocol. Background technique [0002] Radio Frequency Identification (RFID) is a non-contact automatic identification technology. It automatically identifies the target object and obtains relevant data through radio frequency signals. The identification work does not require manual intervention and can work in various harsh environments. From the perspective of the overall framework and application development of RFID, the core technology used to connect front-end RFID equipment with back-end enterprise application systems is becoming more and more important. For the actual deployment of RFID solutions, the ultimate goal is to collect data from various sources for business use. Users will first face how to connect front-end data with their back-end business systems, and secondly, how to ensur...

AI Technical Summary

Problems solved by technology

[0003]However, the integration of RFID middleware and readers used to connect reader devices with application systems has brought new problems to RFID applications

RFID middleware and readers are often heterogeneous, which creates insurmountable difficulties for top-level applications

The main problems are: (1) The type of front-end protocol (reader and tag protocol) is not uniform, which makes the reader device and its back-end protocol (reader and middleware) also diversified; (2) the read-write The type and number of antennas supported by the device are not uniform, which may easily lead to confusion in node data collection and control; (3) Since different manufacturers have their own back-end protocols, the equipment lacks the basis for interconnection; (4) The types of interfaces are also very diverse, such as RS-232, TCP / IP, etc., large-scale application systems are complex and costly

However, because the protocol is developed from the manufacturer's proprietary protocol, it has many limitations of the proprietary protocol: First, the common hard-coded method is adopted for the definition of the logic function of the reader in the communication protocol. Second, the parameters of the command are fixed and do not support dynamic parameters. In complex applications, there is a lack of universal support; third, the interface between the reader and middleware currently only supports TCP / The IP protocol does not constrain the reliability of the underlying protocol

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