PC104 bus-based high-performance near-infrared spectroscopy analysis device and method

Abstract

The invention provides a PC104 bus-based high-performance near-infrared spectroscopy analysis device and method. The device utilizes a hardware system platform to simplify the whole design and improve system device reliability, productivity and maintainability and utilizes a light splitting module to improve an infrared spectroscopic analysis device resolution ratio, the replaced platform has compatibility to the original modules so that a design is simplified and spectrometer whole performances are improved, the device utilizes an inner bus interface to realize compatibility to driving and control of the existing mature modules such as the light splitting module and a motor driving module and to greatly improve a design integrated level, a data measurement rate and whole machine reliability, the device utilizes a system platform to optimize a control interface, improve man-machine interactivity and perfect and improve data test and data analysis, and the novel replaced platform can realize abundant expansion of the interface, improve apparatus practicality and improve a user application occasion.

Description

technical field [0001] The invention belongs to the technical field of energy near-infrared spectrum analysis, and in particular relates to a high-performance near-infrared spectrum analysis device and analysis method based on a PC104 bus. Background technique [0002] In the 600nm-1700nm near-infrared optical communication band, it is a high-performance near-infrared spectrum analyzer specially used for measuring and analyzing laser light sources, optical devices and optical communication transmission systems. Due to the high technical difficulty, only our company has mass-produced products in China. However, with the continuous improvement of users' requirements for spectral testing and analysis in recent years, the defects of the original domestic high-performance spectrometer using single-chip microcomputer as the system main control and data processing module have become more and more prominent. [0003] At present, there are instruments with similar functions in foreig...

AI Technical Summary

Problems solved by technology

However, with the continuous improvement of users' requirements for spectral testing and analysis in recent years, the defects of the original domestic high-performance spectrometer using single-chip microcomputer as the system main control and data processing module have become more and more prominent.

[0003] At present, there are instruments with similar functions in foreign countries, but due to the fact that foreign countries keep domestic technology secret, they have not found the same design scheme, and the only available domestic application in the field of optical communication is the high-performance large dynamic range near-infrared spectrometer based on rotating gratings. The block diagram of the system design scheme is as follows figure 1 Shown: Including double-pass grating monochromator, detector, transimpedance amplifier, A / D, power supply, motor driver module, single-chip microcomputer 1, single-chip microcomputer 2, interface module, control circuit, keyboard, LCD display, printer and floppy drive

[0004] In the original 600nm ~ 1700nm near-infrared spectrometer device, it has the following disadvantages: (1) two single-chip microcomputers are used as the main control and data processing and analysis platform of the device, and because the system resources of the single-chip microcomputer are limited, and it is a serial working mode, it is not conducive to Large scale control system design

Therefore, a large number of pin multiplexing was used in the original design, and in order to realize the system logic control, a large number of 74 series logic chips were used in the original design for logic design. Reliability, manufacturability, and maintainability deteriorate, which increases the weight and cost of the instrument; (2) In order to realize the incident slit motor module, rotating grating DC motor module, optical axis collimation motor module, and optical attenuator Coordinated operation of the motor module, exit slit motor module, double-pass grating monochromator spectrometer module, two-color detector module, amplification filter module, AD conversion module, PC104 bus module, etc., and the two single-chip microcomputers are constantly implementing detection during the working process Interruption is generated to exchange control of the bus with each other, resulting in a relatively slow operation speed of the whole machine; (3) Due to the limitation of the clock frequency and working mode of the single-chip microcomputer, the speed of data processing is too slow, and the effect of data processing is insufficient , relatively poor operability for man-machine users; (4) from the above figure 1 It can be seen that the original analysis device still integrates the floppy drive function, which increases design complexity, weight and cost, reduces reliability, and is far from practical; (5) due to the limitations of the original platform, there is no Ethernet Network port, wireless transmission and other functions, and there is no VGA interface, no external display, and the original LCD display is relatively small, which is also a big shortcoming for a high-performance spectrum analyzer, which is not conducive to its application field expansion

Images