Next Article in Journal
Capillary Rise of Nanostructured Microwicks
Previous Article in Journal
Deformation of Red Blood Cells, Air Bubbles, and Droplets in Microfluidic Devices: Flow Visualizations and Measurements
Article Menu
Issue 4 (April) cover image

Export Article

Open AccessArticle
Micromachines 2018, 9(4), 152; https://doi.org/10.3390/mi9040152

A Control and Detecting System of Micro-Near-Infrared Spectrometer Based on a MOEMS Scanning Grating Mirror

National Key Discipline Laboratory of Novel Micro/Nano Devices and Systems Technologies of Chongqing University, Chongqing 400044, China
*
Author to whom correspondence should be addressed.
Received: 3 February 2018 / Revised: 23 March 2018 / Accepted: 26 March 2018 / Published: 27 March 2018
  |  
PDF [24836 KB, uploaded 3 May 2018]
  |  

Abstract

Based on the scanning grating mirror we developed, this paper presents a method of the precise control of a scanning grating mirror and of high-speed spectrum data detection. In addition, the system circuit of the scanning grating mirror control and spectrum signal detecting is designed and manufactured in this paper. The mirror control system includes a drive generator module, an amplitude detection module, a feedback control module, and a variable gain amplification (VGA) module; the detecting system includes a field programmable gate array (FPGA) main control module, a synchronous trigger module, an analog-digital conversion (ADC) module, and a universal serial bus (USB) interface module. The final results of the experiment show that the control system has successfully realized the precision control of the swing of the scanning grating mirror and that the detecting system has successfully realized the high-speed acquisition and transmission of the spectral signal and the angle signals. The spectrum has been reconstructed according to the mathematical relationship between the wavelength λ and the angle β of the mirror. The resolution of the spectrometer reaches 10 nm in the wavelength range of 800–1800 nm, the signal-to-noise ratio (SNR) of the spectrometer is 4562 at full scale, the spectrum data drift is 0.9% in 24 h, and the precision of the closed loop control is 0.06%. View Full-Text
Keywords: micro-NIR spectrometer; scanning grating mirror; control; detecting; circuits micro-NIR spectrometer; scanning grating mirror; control; detecting; circuits
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Liu, H.; Wen, Z.; Li, D.; Huang, J.; Zhou, Y.; Guo, P. A Control and Detecting System of Micro-Near-Infrared Spectrometer Based on a MOEMS Scanning Grating Mirror. Micromachines 2018, 9, 152.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Micromachines EISSN 2072-666X Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top