RFID wristband used for prison personnel locating

Abstract

The invention discloses an RFID wristband used for prison personnel locating. The wristband comprises an antenna, a power generation circuit, a voltage stabilization circuit, a radio-frequency receiving circuit, a radio-frequency sending circuit, an encoding and decoding circuit, a main control circuit and a storage circuit, wherein the antenna is connected with the radio-frequency receiving circuit; the radio-frequency receiving circuit is connected with the encoding and decoding circuit; the encoding and decoding circuit is connected with the main control circuit and the storage circuit in sequence; the encoding and decoding circuit is further connected with the radio-frequency sending circuit; the radio-frequency sending circuit is connected with the antenna; the power generation circuit is connected with the input end of the voltage stabilization circuit; and the output end of the voltage stabilization circuit is connected with the radio-frequency receiving circuit and the radio-frequency sending circuit. According to the wristband, a voltage stabilization effect can be achieved through the voltage stabilization circuit, and the stability performance of the circuit is improved, so that the power voltage fluctuation caused by the power voltage change or the power current change of the circuit can be reduced, a stable power supply is obtained, and a voltage adjustment effect of the circuit is achieved.

Description

technical field [0001] The invention relates to an RFID wristband used for prison personnel positioning, and belongs to the technical field of radio frequency equipment. Background technique [0002] RFID (Radio Frequency Identification) technology, without contact, can automatically identify and obtain the data of a specific object through radio frequency signals. The whole process does not require manual intervention. It is an automatic identification technology. In the field of radio frequency, electromagnetic waves are divided into 6 parts according to frequency. RFID mainly works in three frequency bands; low frequency (30-300 kHz is mainly used in short-distance low-cost applications, such as access control, campus cards, etc.), high frequency (3-30 MHz is used for systems that need to transmit a large amount of data) ) and ultra-high frequency (300 MHz to 3 GHz are used in occasions that require a long read and write distance and high writing speed, such as in the hi...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, provide an RFID wristband for prison personnel positioning, and solve the problem that the existing RFID wristband cannot realize the voltage stabilization control in the process of transmitting and receiving radio frequency signals, so that RFID The battery power supply of the wristband is unstable, and the voltage stabilization performance is easily affected by temperature, which causes the problem of poor working condition of the RFID wristband

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