Phase-shifted overlapping anti-interference method for acoustic surface wave electric power temperature measurement collector

A technology of electric temperature measurement and surface acoustic wave, which is applied in the direction of electrical components, transmission noise suppression, transmission system, etc., can solve the problems of not being able to solve the influence of fixed interference equipment, not being able to solve the problem of detection equipment, and difficult to detect weak signals correctly, to achieve Improving the effect of system immunity

Inactive Publication Date: 2015-03-04
BEIJING TH SUNRISE INNOVATIVE TECH
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, if there is electromagnetic interference in the environmental space, it will often lead to inaccurate temperature measurement, or cannot continue to measure temperature well, and the existence of interference is an inevitable thing. How to continue to measure accurately in the presence of interference? Temperature is an important issue that needs to be solved in the field of SAW-RFID temperature measurement, especially in the case of co-frequency interference, how to carry out co-frequency anti-jamming or interference cancellation is the focus of this invention
[0005] In the past, the method of adopting anti-interference is: the energy of two echoes is subtracted, which cannot solve the problem of high-power or same-frequency interference.
Because in the amplitude subtraction of FFT, when the interference signal is larger than the echo signal, the weak signal is difficult to be detected correctly
[0006] In the Chinese patent CN103490830A, a method for obtaining the peak value of the radio frequency spectrum by denoising in the surface acoustic wave power temperature measuring equipment is proposed. This method is also a kind of anti-interference technology, but this solution cannot solve the problem of fixed interference on the equipment. Impact
Chinese patent CN103017940A proposes a method based on passive wireless surface acoustic wave temperature sensor saturation detection and adjustment to solve the problem of large sensor detection error and anti-interference during the detection process, but this method also cannot solve the problem when there is fixed interference in the system Impact on testing equipment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Phase-shifted overlapping anti-interference method for acoustic surface wave electric power temperature measurement collector
  • Phase-shifted overlapping anti-interference method for acoustic surface wave electric power temperature measurement collector
  • Phase-shifted overlapping anti-interference method for acoustic surface wave electric power temperature measurement collector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] In order to understand the present invention more clearly, describe the present invention in detail in conjunction with accompanying drawing and embodiment:

[0042] Such as Figure 1 to Figure 4 As shown, same-frequency anti-interference refers to: the interference frequency and the resonant frequency of the tag are in the same frequency band, or the frequency coincides.

[0043] The invention provides an interference cancellation technology to realize the method that the system can continue to carry out effective temperature measurement even in the case of same-frequency interference and the energy of the interference is greater than the energy of the signal. This technique can also be applied to radar navigation and detection.

[0044] Because in the past, the method of adopting anti-interference is: the energy of two echoes is subtracted, which cannot solve the problem of high-power or same-frequency interference. Because in the amplitude subtraction of FFT, when ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a phase-shifted overlapping anti-interference method for an acoustic surface wave electric power temperature measurement collector. By the aid of the fixed phase relationship among transmitting signals and temperature measurement tag echo signals, radio-frequency signals are repeatedly transmitted, the phase of the transmitting signals is transformed by one fixed value every time, and the acquired echo signals are overlapped, energy of effective echo signals is improved, so that resistance to fixed interference of an acoustic surface wave electric power temperature measurement system is improved. The method includes the steps: 1) repeatedly transmitting the radio-frequency signals to a temperature measurement sensor on a tested device by a collector antenna for 64 times; 2) receiving the echo signals reflected by the acoustic surface wave temperature measurement sensor on the related tested device by the collector antenna; 3) processing the echo signals by a DSP (digital signal processor) control unit; 4) eliminating interference signals reflected by the DSP control unit, and reserving the echo signals of a normal resonator. The method has the advantages that the interference signals larger than normal signals are processed, the method is used for the field of radar navigation and detection, and the interference resistance of the system can be improved.

Description

technical field [0001] The present invention relates to electric power testing equipment, in particular to a phase-shifting superimposition anti-interference method for a surface acoustic wave power temperature measurement collector, using surface acoustic wave radio frequency identification technology (SAW-RFID) to monitor the temperature of power system-related equipment in the Internet of Things Test, and when using the frequency measurement method to measure temperature, anti-jamming technology is an important technology to enhance system stability. Background technique [0002] Using SAW-RFID (Surface Acoustic Wave Radio Frequency Identification Technology) to realize real-time monitoring of equipment during operation can provide technical support for power operation departments to predict failures, solve problems in advance, and avoid huge economic losses and casualties caused by failures. [0003] In the prior art, the method of using SAW-RFID temperature measuring eq...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H04B15/00
Inventor 曹占生王云灵李小刚李晶索召和
Owner BEIJING TH SUNRISE INNOVATIVE TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products