Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Wireless sensor measurement system of self-calibration integrated circuit

A technology of wireless sensing and measurement systems, applied in signal transmission systems, measuring devices, instruments, etc., can solve problems such as large errors in measurement results

Inactive Publication Date: 2011-03-30
ZHEJIANG UNIV
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, because the wireless sensor measurement system is often used in harsh environments, such as high temperature, humidity, etc., conventional measurement methods will be greatly affected, resulting in large errors in measurement results

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
  • Wireless sensor measurement system of self-calibration integrated circuit
  • Wireless sensor measurement system of self-calibration integrated circuit
  • Wireless sensor measurement system of self-calibration integrated circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The present invention will be further described below in conjunction with drawings and embodiments.

[0016] Such as figure 1 As shown, the wireless sensing measurement system integrating self-calibration circuit of the present invention includes a transmitting chip, a passive sensing chip and a pair of resonant coils 5, and the transmitting chip includes a phase-locked loop 1, a power amplifier 2, an amplitude detector 3 and a first The data processor 4, the passive sensor chip includes a load modulator 6, an energy converter 7, a second data processor 8 and an analog-to-digital converter 9; the output end of the phase-locked loop 1 is connected to the input end of the power amplifier 2; The output end of the analog-to-digital converter 9 is connected to the input end of the second data processor 8, and the output end of the second data processor 8 is connected to the load modulator 6; the load modulator 6, the energy converter 7 and a pair of resonant coils One of th...

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 discloses a wireless sensor measurement system of a self-calibration integrated circuit. In the system, the output end of a phase-locked loop is connected with the input end of a power amplifier, and the output end of an amplitude detector is connected with a first data processor; the reference voltage output end of an energy converter is connected with an analog / digital (A / D) converter, the output end of the A / D converter is connected with the input end of a second data processor, and the output end of the second data processor is connected with a load modulator; and the load modulator, the energy converter and one of a pair of resonance coils are connected in parallel, and the power amplifier, the other one of the pair of resonance coils and the amplitude detection are connected in sequence, wherein the A / D converter is provided with a self-calibration circuit, and a self-calibration algorithm circuit is integrated on the first data processor. The wireless sensor measurement system has the advantage that the influences of environment variation, technical errors and the like on measurement precision are weakened.

Description

technical field [0001] The invention relates to a wireless sensor measurement system. The system integrates a self-calibration circuit with high measurement accuracy. Background technique [0002] Wireless sensor measurement technology is widely used in various fields, including real-time monitoring of temperature, humidity, pressure, etc. Due to the significant advantages of low complexity, low cost, and long life, passive sensor chips are more widely used than active sensor chips in wireless sensor measurement systems. The passive wireless sensor measurement system includes two parts: the transmitter chip and the passive sensor chip. The passive sensor chip converts the electromagnetic waves emitted by the transmitter chip into the energy it needs, and converts the variables detected by the sensor into digital signals. , coupled to the transmitter chip. The transmitting chip can detect the digital signal and send it to the single chip microcomputer for processing. [0...

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
IPC IPC(8): G08C17/02G01D21/00
Inventor 李栋沈美根皇甫江涛张斌冉立新
Owner ZHEJIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com