Near field communication method of non-contact radio frequency identification devices

Abstract

The invention discloses a near field communication method of non-contact radio frequency identification devices for solving the technical problem of convenience of communication of a plurality of hand-held non-contact radio frequency identification devices. The method comprises the following steps of: making one to one connection-oriented communication by the hand-held non-contact radio frequency identification device A according to a communication ID index table of other non-contact radio frequency identification devices, or utilizing a non-connection-oriented communication mode for sending device settings command subsets, tag read and write command subsets or device status query command subsets; and waiting for serial commands thereof and data sent by other non-contact radio frequency identification devices by the hand-held non-contact radio frequency identification device A when the communication is completed. Compared with the prior art, when the hand-held non-contact radio frequency identification device carries out point to point data exchange with another similar device and carries out data broadcasting with a plurality of devices, the invention has high efficiency, is safe, and expands application flexibility of near field communication of the non-contact radio frequency identification devices.

Description

technical field [0001] The invention relates to a radio frequency identification (RFID) communication method, in particular to a radio frequency identification (RFID) short distance communication method. Background technique [0002] The current handheld non-contact RFID devices are widely used in warehouse management, local logistics, and animal husbandry safety inspection applications. Most of the handheld non-contact RFID devices are separate individuals, and they complete their functional tasks independently. ; Or use the existing 802.11b / g, GPRS wireless network, and Bluetooth to connect with other devices in the current site, and cooperate to complete some specific tasks. When some business application sites require multiple non-contact radio frequency identification devices to complete work in a short distance, but the business application site does not have an 802.11b / g network, or the delay of the GPRS network is unacceptable, or some devices When the terminal does...

AI Technical Summary

Problems solved by technology

When some business application sites require multiple non-contact radio frequency identification devices to complete work in a short distance, but the business application site does not have an 802.11b / g network, or the delay of the GPRS network is unacceptable, or some devices When the terminal does not have the Bluetooth function, the flexible applicability of the existing handheld non-contact RFID equipment is limited

[0003] The use of 802.11b / g wireless communication requires the installation of 802.11b / g wireless access points in the business application site, and requires a host device in the network to complete the processing of application data. When the communication method in the application is based on connection-oriented communication , due to the complexity of the 802.11b / g network configuration and connection relationship, when a host device communicates with multiple identification devices, it is impossible to flexibly communicate with multiple identification devices and the host in real time

[0004] When using the GPRS network for communication, due to the uncertain delay of the GPRS network, the application of some services cannot tolerate the delay. not cheap

[0005] Using Bluetooth technology to realize short-distance wireless communication can only communicate in a one-to-one link-oriented manner, but cannot realize one-to-many non-link-oriented communication

[0006] Regardless of whether it is based on 802.11b / g technology, GPRS network technology, or Bluetooth technology, it is necessary to deal with complex protocols, which is difficult to implement. In the case of short-distance communication, the development cost is relatively high

Therefore, wireless communication methods using these standard protocols are not suitable for applications that require short-distance transmission and a small amount of transmitted information.

Images