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High-accuracy loosely-coupled multi-level voltage output type power allocation circuit

A technology of voltage output and power allocation, applied in the output power conversion device, the irreversible AC power input is converted into DC power output, electrical components and other directions, which can solve the problems of easy voltage interaction and unstable operation of RFID readers. , to achieve the effect of improving read and write distance and loose coupling

Active Publication Date: 2014-01-15
SHANGHAI BAOSIGHT SOFTWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The voltages of the above multiple levels are easy to affect each other, resulting in unstable operation of the RFID reader

Method used

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  • High-accuracy loosely-coupled multi-level voltage output type power allocation circuit
  • High-accuracy loosely-coupled multi-level voltage output type power allocation circuit
  • High-accuracy loosely-coupled multi-level voltage output type power allocation circuit

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Embodiment

[0032] refer to figure 1 , the high-precision loose-coupled multi-stage voltage output power distribution circuit of the present invention includes a power decoupling conversion module 1, a high-precision two-stage voltage stabilization module 2, a step-down adjustment module 3, a transient large current module 4, and a steady-state DC module 5 and low-voltage micro-current module 6. The power supply decoupling conversion module 1 is connected to the high-precision two-stage voltage stabilization module 2 and the step-down regulation module 3 respectively; the step-down regulation module 3 is connected to the transient large current module 4, the steady-state DC module 5 and the low-voltage micro-current module 6 respectively .

[0033] In order to provide different DC low voltages to the subsequent stage, the 220V AC input from the industrial site first passes through the power decoupling conversion module 1, and the power decoupling conversion module 1 converts the 220V AC ...

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PUM

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Abstract

The invention discloses a high-accuracy loosely-coupled multi-level voltage output type power allocation circuit. In the high-accuracy loosely-coupled multi-level voltage output type power allocation circuit, a power decoupling conversion module is used to convert an alternating current in an industrial field into a low-voltage direct current, and the output end of the power decoupling conversion module is serially connected with a choking coil to eliminate the interference of a switching frequency about 300KHz on tag read-write signals; a high-accuracy two-level voltage stabilizing module can be used to ensure the power supply effect of an RFID integrated chip; a step-down adjustment module can be used to reduce the heat effect of voltage drop on a circuit board while being used to provide inputted voltage and current required by subsequent modules; a high-capacity energy storage capacitor of a transient high-current module is used to provide a high current required by an RFID power amplifier without reducing the voltage value sharply; a steady-state direct-current module is used to provide the power of a transaction controller; and a low-voltage microcurrent module is used to provide power for a high-frequency switch. According to the invention, all power supply noises are collected to the output end of the power decoupling conversion module, the interaction between all levels power supplies required by an RFID reader-writer can be shielded, and loosely coupling can be realized.

Description

technical field [0001] The invention relates to the design of a power supply system, in particular to a high-precision loosely coupled multi-stage voltage output power supply adjustment circuit. Background technique [0002] With the extensive application of the Internet of Things in various aspects of national industries such as smart grids, smart transportation, smart logistics, and ecological monitoring, RFID technology in the UHF frequency band is developing rapidly. It is a non-contact automatic identification technology. Identify target objects and obtain relevant data. The identification work does not require manual intervention and can work in various harsh environments. The RFID system consists of three parts: tags, readers and antennas, among which the RFID reader is the core of the entire RFID system. The RFID reader involves multi-level voltage and has extremely strict requirements on the power supply. Its transmission circuit needs to amplify and output the rad...

Claims

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Application Information

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IPC IPC(8): H02M7/04H02M1/44
Inventor 许煜周媛张灿峰闻扬
Owner SHANGHAI BAOSIGHT SOFTWARE CO LTD
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