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A Surface Acoustic Wave Delay Line Wireless Sensor System with Anti-collision Function

A surface acoustic wave delay and wireless sensor technology, applied in the direction of transmitting sensing components, instruments, scientific instruments, etc., using wave/particle radiation devices, can solve problems such as unclear practical prospects, improve sensor performance, improve detection accuracy, The effect of the actual transmitted RF power is small

Active Publication Date: 2018-03-27
CETC DEQING HUAYING ELECTRONICS
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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 Surface Acoustic Wave Delay Line Wireless Sensor System with Anti-collision Function
  • A Surface Acoustic Wave Delay Line Wireless Sensor System with Anti-collision Function
  • A Surface Acoustic Wave Delay Line Wireless Sensor System with Anti-collision Function

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Embodiment Construction

[0062] 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.

[0063] 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 surface acoustic wave (SAW) delay line type wireless sensor system with an anti-collision function. An input transducer of a responder sensing chip employs a coding interdigital transducer (associated transducer), and codes of the transducer belongs to the compatible codes of a same compatible code set; responders employing a same compatible code coding chip belong to a same kind of responders. The responder sensing chip is at least provided with two cofrequency output interdigital transducers arranged along a sound channel. For a same kind of responder chips, chips have different initial delay distances from a first output transducer to an input transducer, and the space between two output transducers is consistent. The distances are designed, allowing all echo peaks to be distinguished by a reader to obtain sources and sensing information when the electromagnetic echoes meanwhile generated by a same kind of responders are superposed in a nominal sensor measuring scope. The reader possesses the coding component of compatible codes. The anti-collision function of the system equals to the kind number of different kinds of responders multiplied by a sequential capacity.

Description

【Technical field】 [0001] The invention relates to a surface acoustic wave wireless sensor, in particular to a surface acoustic wave delay line type wireless sensor system with an anti-collision function. 【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): G01K11/22G01D5/48
Inventor 陈培杕王祥邦肖功亚黄亮朱卫俊
Owner CETC DEQING HUAYING ELECTRONICS
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