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CCD small spectrometer system and data acquisition method using pulsed xenon lamp light source without hardware synchronization

A pulsed xenon lamp and data acquisition technology, applied in the field of optical measurement, to achieve the effect of long life and high energy

Inactive Publication Date: 2016-10-19
SHANGHAI SPECTRUM INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Pulsed xenon lamp is a new type of analytical light source, which is rarely used in small CCD spectrometers. Since the pulse width of the pulsed xenon lamp is only tens of microseconds, the CCD detector needs a certain integration time to obtain a stable electrical signal.

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  • CCD small spectrometer system and data acquisition method using pulsed xenon lamp light source without hardware synchronization
  • CCD small spectrometer system and data acquisition method using pulsed xenon lamp light source without hardware synchronization
  • CCD small spectrometer system and data acquisition method using pulsed xenon lamp light source without hardware synchronization

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Embodiment Construction

[0031] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0032] In the pulse xenon lamp-CCD small spectrometer system without hardware synchronization, the present invention uses the same and fixed pulse xenon lamp light source lighting frequency and the internal cycle sampling frequency of the CCD detector, and uses a sufficiently wide CCD exposure time, and through the host computer Automatically adjust the starting point of the cyclic sampling of the CCD detector, so that the CCD detector can achieve effective exposure and collect the correct optical signal at the moment when the pulsed xenon light source emits light.

[0033] Based on the above principles, the process of synchronous data acquisition of pulsed xenon lamp-CCD small spectrometer without hardware synchronization in the present inventio...

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Abstract

The invention discloses a hardware synchronization-free CCD small-sized spectrograph system adopting a pulse xenon light source and a data acquisition method. The spectrograph system is composed of the fixed-frequency pulse xenon light source, a sample cell, a monochromator, a CCD detector and an upper computer. Correct CCD electrical signal acquisition can be realized through the following manners that: the fixed-frequency pulse xenon light source is adopted; the internal cyclic sampling frequency of the CCD detector is the same with the frequency of the pulse xenon light source; long enough CCD exposure time is realized; and the starting point of the cyclic sampling of the CCD detector can be automatically adjusted through software. With the hardware synchronization-free CCD small-sized spectrograph system adopting the pulse xenon light source and the data acquisition method of the invention adopted, correct light signal acquisition which is performed on the pulse xenon light source by the CCD detector can be effectively realized.

Description

technical field [0001] The invention relates to an optical measurement technology, in particular to a method for synchronizing a pulse xenon lamp-CCD small spectrometer light source. Background technique [0002] Pulse xenon lamp is a new type of analytical light source. In addition to its wavelength covering almost all ultraviolet, visible and near-infrared bands, it also has the following advantages: energy saving and low power consumption, which is conducive to the application of portable on-site analytical instruments; no heat, which is conducive to optical and mechanical stability; no preheating , Immediately stable, easy to use; small size, easy to design, install and adjust; high color temperature (up to 12000K), strong ultraviolet light; high instantaneous luminous power, which is beneficial to improve the signal-to-noise ratio of the instrument; long life; no ozone. [0003] Due to these advantages, it is widely used in portable field instruments, medical instrument...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/10G01J3/28
Inventor 刘志高陈建钢矫贝克
Owner SHANGHAI SPECTRUM INSTR