Low frequency signal conditioning and demodulation system
A demodulation system and low-frequency signal technology, which is applied in the field of low-frequency signal conditioning and demodulation systems, can solve the problems of uncontrollable chip working mechanism, chip incompetence, and high price.
Inactive Publication Date: 2016-06-08
SHANGHAI SUPER ELECTRONICS TECH
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Problems solved by technology
[0004] However, the defects of these special-purpose chips include: technology monopoly, high price, unreliable low-frequency wake-up, uncontrollable signal processing, inflexible use, uncontrollable internal working mechanism of the chip, etc.
Therefore, for users, they can only adapt to the working mode of the chip. For special applications, these chips are sometimes not competent
At the same time, in order to find a suitable dedicated chip, it takes a lot of time and manpower to test and verify, which greatly reduces the work efficiency
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[0037] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.
[0038] In order to solve many defects such as technical monopoly, high price, unreliable low-frequency wake-up, uncontrollable signal processing, and inflexible use of chips in the prior art, the present invention provides a low-frequency signal conditioning and demodulation system, which is mainly composed of It consists of an analog signal input unit, an analog signal amplifying unit, an analog signal detection unit, a detection leakage circuit, an analog signal control unit, an analog signal sampling unit and a decoding unit, wherein some of the above system modules can be optimally controlled through the analog signal control unit, Achieve the effects of reducing power consumption, fast response, and reliable detection of low-frequency signals.
[0039] Specifically, such as figure 1 As sho...
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The invention relates to the electronic tag technology field and especially relates to a low frequency signal conditioning and demodulation system. The system is mainly formed by a simulation signal input unit, a simulation signal amplification unit, a simulation signal demodulation unit, a demodulation discharge loop, a simulation signal control unit, a simulation signal sampling unit and a decoding unit. Through the simulation signal control unit, a system module can be optimized and controlled so that effects of reducing electric quantity consumption, rapidly responding and reliably detecting a low frequency signal are reached. And through cooperating a software decoding algorithm, decoding performance is optimized and usage cost of a chip is greatly reduced. Simultaneously, a high adaptation capability characteristic is possessed.
Description
technical field [0001] The invention relates to the technical field of electronic tags, in particular to a low-frequency signal conditioning and demodulation system. Background technique [0002] Active radio frequency identification (Radio Frequency IDentification, referred to as RFID) electronic tags based on low-frequency communication are more and more widely used. The key technology of this electronic tag lies in the low-frequency communication mechanism, and the corresponding working mode of the electronic tag can be activated through the low-frequency communication mechanism. [0003] The realization of this key technology is mainly based on foreign special-purpose chips, typically AS3933, MICROCHIP MCP2030 and other special-purpose low-frequency signal processing chips. These special-purpose chips integrate signal amplification, filtering, wave detection, signal demodulation and logic control functions. [0004] However, the defects of these special-purpose chips inc...
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IPC IPC(8): G06K7/00
Inventor秦忠徐进明徐斌宋福鑫
OwnerSHANGHAI SUPER ELECTRONICS TECH