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Multi-sensor switching device of double beam spectrophotometer

A spectrophotometer and switching device technology, applied in measurement devices, material analysis by optical means, instruments, etc., can solve the problems of unusable, photoelectric conversion parts can not reach the measurement range, etc., and achieve the effect of convenient use and simple structure

Pending Publication Date: 2018-02-23
武汉量谱精密仪器有限公司
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Problems solved by technology

[0004] Due to the use of one photoelectric conversion part in the prior art, when one photoelectric conversion part cannot reach the measurement range, it cannot be used

Method used

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  • Multi-sensor switching device of double beam spectrophotometer
  • Multi-sensor switching device of double beam spectrophotometer
  • Multi-sensor switching device of double beam spectrophotometer

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] Such as figure 1 , figure 2 and image 3 Shown: The multi-sensor switching device of the double-beam spectrophotometer, including two photoelectric conversion parts, two reflective groups, reflected light path switching device and driving device.

[0019] In the present application, the photoelectric conversion part, respectively the first photoelectric conversion part 11 and the second photoelectric conversion part, is used to receive the reference beam optical signal and the sample beam optical signal of the reference predetermined sequence, and the photoelectric conversion part converts the reference beam optical signal, sample The composite optical signal formed by combining the beam optical signal is converted into a composite electrical signal;

[0020] In this application, there are two reflective groups, one reflective group ...

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Abstract

The invention discloses a multi-sensor switching device of a double beam spectrophotometer. The multi-sensor switching device of the double beam spectrophotometer comprises two photovoltaic conversionparts and two reflecting groups, and also comprises a reflected light path switching device; the reflected light path switching device comprises a swing arm; the swing arm is rotatably connected witha pedestal; a light path switching reflecting mirror capable of swinging back and forth along with the swing arm is arranged on the swing arm; the swinging track of the light path switching reflecting mirror is intersected with the light path reflecting track of the two reflecting groups; when the switching reflecting mirror is positioned in the intersection position of the light path reflectingtracks of the two reflecting groups, the switching reflecting mirror reflects the light path to one of the photovoltaic conversion parts; and when the switching reflecting mirror is far away from thelight path reflecting tracks of the two reflecting groups, the two reflecting groups reflect light signals to the other photovoltaic conversion part respectively. The multi-sensor switching device ofthe double beam spectrophotometer can switch the other sensor conveniently when the range of one sensor is exceeded, can perform switching according to requirements, and is simple in structure and convenient to use.

Description

technical field [0001] The invention relates to the field of spectrophotometers, in particular to a multi-sensor switching device for a double-beam spectrophotometer. Background technique [0002] A spectrophotometer is a device used to measure absorption spectra. Among spectrophotometers, there are visible ultraviolet spectrophotometers for measuring spectra from the near-infrared region to the visible region and ultraviolet region, infrared spectrophotometers for measuring spectra in the infrared region, and the like. [0003] The Chinese patent authorization announcement number is CN104007074, which discloses a double-beam spectrophotometer, including: an orthogonal signal generation unit, a photoelectric conversion unit, two reflective groups, a periodic feedback unit, a motor, a signal amplification unit, an analog-to-digital conversion unit and FPGA Analysis Department. The quadrature signal generation unit is used to block the reference beam and the sample beam into...

Claims

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Application Information

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IPC IPC(8): G01N21/31
CPCG01N21/314G01N2021/317
Inventor 阮姚锋
Owner 武汉量谱精密仪器有限公司
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