Spectroscopy water environment online measuring device

Abstract

The invention discloses a spectroscopy water environment online measuring device. The output end of a controller is connected with a light source and a detector; continuous pulse light transmitted by a light source module is divided by a Y-type optical fiber into two beams which are respectively used as a measuring light source and a reference light source; the reference light source is connected to a reference detector through a reference optical fiber, and the reference detector converts a reference optical signal to a reference electric signal to be inputted to the controller; the measuring light source enters a reflection probe, detection light transmitted by the reflection probe enters a circulation pond and then shines on a reflection mirror, the reverse reflected light reflected by the reflection mirror enters the circulation pond, returns into the reflection probe and then enters the detector through a receiving optical fiber, and the detector performs the photoelectric signal conversion and transmits the converted signal to the controller. The spectroscopy water environment online measuring device has beneficial effects that by adopting the same light source, the influence caused by the fluctuation such as the aging of the light source can be effectively eliminated, and the optical stability is better; light in the ultraviolet-visible light waveband is used as an integral spectrum, so that the sensitivity and the accuracy are higher.

Description

technical field [0001] The invention relates to the technical field of measurement and control, in particular to a measurement device, and more specifically to a portable, low-power spectrum on-line measurement system. Background technique [0002] Since the beginning of the 21st century, with the rapid economic development, the ecosystem is under tremendous pressure, and various water bodies (rivers, rivers, lakes, seas) have also suffered serious damage. The core content of water environment monitoring is to monitor and analyze the quality status of water bodies and their changes, so as to provide scientific basis for the development, utilization, management and protection of water resources for the country and governments at all levels. Only by continuous, automatic, in-situ, and on-line monitoring of the water quality to be measured, and synchronous transmission and storage of data, can the monitoring data be objective and scientific, and can be used for all levels Prov...

AI Technical Summary

Problems solved by technology

The patent uses the light source to "split into two beams through a 45° beam splitter, one of which is used as a reference optical path to reflect and bend to a 90° direction, and passes through a mirror, beam splitter to the photomultiplier tube; the other is used as a measurement optical path after transmission through the modulation disc , pass through the water curtain to be measured at a constant speed, and be received by the photomultiplier tube through the beam splitter". This structure uses a beam splitter to split light, and the optical system is complicated. In some cases, it has a great impact on the optical system; Second, the use of modulation discs, multiplier tubes and other components, which are large in size, makes it difficult to achieve in-situ monitoring

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