KEYWORDS: Fiber Bragg gratings, Heart, Signal detection, Signal processing, Sensors, Body temperature, Integrated circuits, Digital signal processing, Intelligent sensors, Temperature metrology
A human physiological parameters intelligent clothing is researched with FBG sensor technology. In this paper, the
principles and methods of measuring human physiological parameters including body temperature and heart rate in
intelligent clothing with distributed FBG are studied, the mathematical models of human physiological parameters
measurement are built; the processing method of body temperature and heart rate detection signals is presented; human
physiological parameters detection module is designed, the interference signals are filtered out, and the measurement
accuracy is improved; the integration of the intelligent clothing is given. The intelligent clothing can implement real-time
measurement, processing, storage and output of body temperature and heart rate. It has accurate measurement,
portability, low cost, real-time monitoring, and other advantages. The intelligent clothing can realize the non-contact
monitoring between doctors and patients, timely find the diseases such as cancer and infectious diseases, and make
patients get timely treatment. It has great significance and value for ensuring the health of the elders and the children
with language dysfunction.
Based on optical fiber grating sensing technology, the signal processing system of smart clothes was designed. The
clothes embedded in fiber Bragg gratings (FBGs) sensor can measure the body physiological parameters, such as
temperature, and detect the healthy condition of wearer. The paper presented FBG wavelength detection and signal
processing methods with wearable characteristics, designed optical scheme and demodulated circuit in terms of tunable
F-P filer wavelength demodulation theory. The numerical arithmetic of processing wavelength data was researched and
realized in ARM. By testing, the measuring scope of wavelength is from 1520.5 to 1562nm, and the resolution of
wavelength can arrive at 2pm. By selecting appropriate center wavelength of sensing gratings and referenced gratings,
the relative error of wavelength can less than 0.001%. The signal processing system can adjust the excursion of F-P
cavity timely, and has characters of portability, wireless data transmission.
A nondestructive detection system based on X-ray for wire ropes conveyer belt is designed by X-ray detection
technology. In this paper X-ray detection principle is analyzed, a design scheme of the system is presented; image
processing of conveyer belt is researched and image processing algorithms are given; X-ray acquisition receiving board
is designed with the use of FPGA and DSP; the software of the system is programmed by C#.NET on WINXP/WIN2000
platform. The experiment indicates the system can implement remote real-time detection of wire ropes conveyer belt
images, find faults and give an alarm in time. The system is direct perceived, strong real-time and high accurate. It can be
used for fault detection of wire ropes conveyer belts in mines, ports, terminals and other fields.
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