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A High Performance Anti-Collision Surface Acoustic Wave Delay Line Wireless Sensor System

A surface acoustic wave delay and wireless sensor technology, applied in the direction of instruments, inductive record carriers, record carriers used by machines, etc., can solve problems such as unclear practical prospects, achieve low actual transmitted radio frequency power, improve detection accuracy, and short size Effect

Active Publication Date: 2018-03-06
CETC DEQING HUAYING ELECTRONICS
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  • Abstract
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Problems solved by technology

[0020] Using software algorithms to expand the anti-collision function of surface acoustic wave sensors, although progress has been made, the practical prospects are uncertain

Method used

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  • A High Performance Anti-Collision Surface Acoustic Wave Delay Line Wireless Sensor System
  • A High Performance Anti-Collision Surface Acoustic Wave Delay Line Wireless Sensor System
  • A High Performance Anti-Collision Surface Acoustic Wave Delay Line Wireless Sensor System

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Embodiment Construction

[0059] Premier Wen Jiabao proposed in August 2009 that the industrialization of "sensing China" or "smart sensor network" should be accelerated. This year, the central government began to implement "Made in China 2025" and "Internet +", which is a major deployment of my country's economic development and a strong support for improving national strength and realizing the "Chinese Dream". The basic characteristics of the intelligent sensor network are: sensor nodes are everywhere, which can sense environmental changes at any time and collect them through wireless links to the information center for processing and inform users. Sensors that can be wirelessly networked are the basis of the intelligent sensor network.

[0060] The surface acoustic wave (SAW) wireless sensor based on the radar principle developed in recent years does not require an external power supply, has strong anti-interference ability, and can work reliably in various harsh environments (such as high temperatur...

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Abstract

The invention provides a high-performance anti-collision surface acoustic wave delay line type wireless sensor system. The input transducer of the transponder sensor chip is a coded interdigital transducer (input related transducer), which is coded as a compatible code belonging to the same compatible code group, and a transponder using the same compatible code coding chip is called for similar transponders. On the transponder sensor chip, there are at least two co-frequency output related transducers arranged along the sound channel, which are preferably coded as Barker codes. For transponder chips of the same type, the initial delay distance between the first output transducer and the input transducer is different from each other; the distance between the output transducers is consistent; the design should be within the nominal sensing volume test range, After the electromagnetic echoes generated simultaneously by similar transponders are superimposed, all echo peaks should be distinguishable by the reader. The reader should have compatible code generation and Barker code demodulation components. The anti-collision function of the system is equal to the number of different types of transponders multiplied by the timing capacity.

Description

【Technical field】 [0001] The invention relates to a surface acoustic wave wireless sensor, in particular to a high-performance anti-collision surface acoustic wave delay line type wireless sensor system. 【Background technique】 [0002] Real-time monitoring of the temperature of power grid equipment is the basic means of smart grid, and the market demand is urgent. Due to the special environment of the power grid, conventional temperature sensors cannot be applied, and the use of surface acoustic wave wireless sensor telemetry technology is an internationally recognized better solution. [0003] The surface acoustic wave (Surface Acoustic Wave, SAW) wireless sensor based on the radar principle developed in recent years does not require an external power supply, has strong anti-interference ability, and can be used in various harsh environments (such as high temperature, strong electromagnetic interference and nuclear radiation, etc.) It works reliably and is a supplement to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K19/077G06K7/00
Inventor 陈培杕朱卫俊李勇邹梁曹金荣
Owner CETC DEQING HUAYING ELECTRONICS
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