Unlock instant, AI-driven research and patent intelligence for your innovation.

A signal excitation and data acquisition device and method for magnetic induction imaging

A magnetic induction imaging and data acquisition technology, applied in the field of electromagnetic sensors, can solve the problems of increasing system power consumption and complexity, achieve the effects of improving measurement accuracy and temperature stability, simplifying the processing process, and reducing temperature drift and noise

Active Publication Date: 2017-09-29
HANGZHOU UTRON TECH CO LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This requires two signal sources, increasing system power and complexity

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
  • A signal excitation and data acquisition device and method for magnetic induction imaging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The invention discloses a signal excitation and data acquisition device for magnetic induction imaging, figure 1 It is a schematic diagram of the connection structure of the signal excitation and data acquisition device used for magnetic induction imaging in the present invention; the device includes a transceiver coil Tn (T1-Tn), a transceiver switch T / R, a multi-way switch MUX, a power amplifier PA and a low noise amplifier LNA, Signal generator, 0 / 90 phase shifter, frequency divider, analog-to-digital converter A / D, reference voltage and controller MUC, the controller MCU is connected with the multi-way switch MUX respectively with the transceiver coil Tn (T1-Tn), Transceiver switch T / R, multi-channel switch MUX, power amplifier PA and low noise amplifier LNA, signal generator, 0 / 90 phase shifter, frequency divider, analog-to-digital converter A / D, reference voltage control connection, power amplifier PA is connected to the output terminal of the signal generator.

...

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 signal excitation and data acquisition device and method for magnetic induction imaging, including a sending coil Tn (T1-Tn), a sending and receiving switch T / R, a multi-way switch MUX, a power amplifier PA and a low noise amplifier LNA, Signal generator, 0 / 90 phase shifter, frequency divider, analog-to-digital converter A / D, reference voltage and controller MUC, the output end of power amplifier PA connection signal generator, the present invention uses single excitation signal, will excite The signal is used as the sampling clock of analog-to-digital conversion, and the zero-IF mixing function is directly completed by using the analog-to-digital converter, and the phase detection of the excitation signal and the detection signal is completed by using a single-channel time-division quadrature analog-to-digital sampling method. This patent reduces the data rate of analog-to-digital conversion through a simple digital method, that is, synchronous down-sampling.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic sensors, in particular to a signal excitation and data acquisition device and method for magnetic induction imaging. Background technique [0002] Magnetic induction imaging technology relies on measuring the phase of the excitation signal and the measurement signal to complete the measurement. Higher resolution is possible due to the higher frequency excitation signal. The higher excitation frequency creates troubles for digital processing. [0003] Chinese patent 201510029290.7 "A Phase-Frequency Characteristic Detector and Method for Detecting Phase-Frequency Characteristic" uses the core of the phase detection product AD8032. The resolution of the phase measurement of the AD8032 is 1 degree, and the resolution of the phase measurement for biological magnetic induction imaging rate should be less than 0.02 degrees. [0004] 13 in Chinese Patent No. 94192376.2 "A Phase Detection Devic...

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 Patents(China)
IPC IPC(8): G01R33/32
Inventor 李文华陈诚宣奇波石崇源宣和均
Owner HANGZHOU UTRON TECH CO LTD