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

A constant temperature control system and control method for X-ray fluorescence spectrometer

A fluorescence spectrometer and constant temperature control technology, which is applied in the control/regulation system, temperature control by electric means, temperature control, etc., can solve the problems of crystal plane spacing changes, measurement errors, etc., and achieve the ability to prevent breakdown damage and anti-interference Strong, protective and stable work effect

Active Publication Date: 2016-08-17
BEIJING ARITIME INTELLIGENT CONTROL
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the crystal has a certain coefficient of thermal expansion, the change of temperature will cause the change of the interplanar distance of the crystal, which will cause the change of the detection angle and bring errors to the measurement.

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 constant temperature control system and control method for X-ray fluorescence spectrometer
  • A constant temperature control system and control method for X-ray fluorescence spectrometer
  • A constant temperature control system and control method for X-ray fluorescence spectrometer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0089] Experimental effect of the present invention is illustrated in conjunction with accompanying drawing;

[0090] Taking the wooden experiment box as an example, the size of the box is: 60cm×40cm×80cm;

[0091] After the control chip is sampled, the corresponding temperature value is obtained by linear fitting calibration. When the system reaches stability, a short-term temperature control accuracy measurement is performed. Taking 1 minute as the benchmark, measuring for 1 hour, a total of 60 measurement data were obtained. The maximum temperature value is 36.05882°C, the minimum temperature value is 35.96973°C, the average value is 36.01049°C, and the mean square error is 6.31×10 -4 ℃. The temperature is well controlled within 0.1°C, meeting the expected control accuracy requirements. The short-term temperature control curve of the constant temperature control system is as follows: Figure 6 shown.

[0092] In order to measure the long-term stability of the system, ...

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 constant temperature control system and control method for an X-ray fluorescence spectrometer, which consists of two parts of temperature measurement and temperature control. The temperature measurement part includes: constant current source drive circuit, bridge temperature measurement circuit, and filter limiter circuit; the control algorithm adopts PID linear controller and Fuzzy controller hybrid control; the heater drive circuit adopts photocoupler combined with bidirectional thyristor AC power control. The system of the invention has stable performance and strong anti-interference ability, and can realize a temperature resolution of 0.1°C, and a temperature setting and control accuracy of 36±0.2°C. The system of the invention can not only provide a constant temperature environment for the sample chamber and the spectroscopic chamber of the X-ray fluorescence spectrometer, but also can be applied to the measurement and testing of small environmental occasions requiring constant temperature adjustment.

Description

technical field [0001] The invention relates to a constant temperature control system and control method for an X-ray fluorescence spectrometer, belonging to the technical field of constant temperature control of the spectrometer. Background technique [0002] X-ray fluorescence spectroscopic analysis technology has the advantages of simple sample preparation, high analytical precision, good accuracy, low cost, low pollution, and rapid analysis of multiple elements at the same time. It has a wide range of applications and has become an indispensable three in modern analytical laboratories. One of the big instruments. According to incomplete statistics, there are more than 2,000 high-power wavelength dispersive X-ray fluorescence spectrometers of various types in various analysis fields across the country, and the number is increasing or updating at a rate of 200-300 per year. Since there is no production base of high-power wavelength dispersive X-ray fluorescence spectromet...

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): G01N23/223G05D23/24G05D23/30
Inventor 麻硕邱忠义谢鹏宋敏由菁菁
Owner BEIJING ARITIME INTELLIGENT CONTROL
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