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工業技術研究院

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技術名稱: 雷射光學影像水中懸浮顆粒濃度及水位量測裝置及其量測方法

技術簡介

本發明係提供一種可同時量測液體的懸浮顆粒濃度及水位的方法及其量測裝置:(1)懸浮顆粒濃度量測裝置包括影像擷取裝置及雷射光源。量測方法包括下列步驟:(a)虛擬性地分割液體為複數個長方體;(b)由雷射光源射入第一光束至複數個長方體的其中之一,使複數個長方體散射出第二光束;(c)在M個不同的位置,使用影像擷取裝置擷取第二光束,以形成M個影像,M為大於或等於1的正整數;(d)計算第二光束的穿透率、散射率等參數計算吸光度;及(e)由該吸光度量測液體的懸浮顆粒濃度。本發明的量測裝置成本低廉,並且可於不同場所即時、有效、精確地量測及監測液體的懸浮顆粒濃度。(2)水位量測裝置包括一影像擷取裝置、二雷射光源及一影像處理裝置。水位量測方法為:(a)於雷射光學影像水位量測裝置在水體上方的第一距離處將二雷射光源的光線射入水體,並拍攝水體的表面為第一影像;及(b)傳送第一影像至影像處理裝置,並藉由第一影像的雷射光點間距及校正曲線計算水位。重疊不同時間點拍攝之水體影像可增強雷射光點之辨識。本發明的水位量測裝置以非接觸式、精確、即時的測量水體的水位,並且可減少裝置成本。

Abstract

A measuring device for water suspended solid (SS) concentration and water level(WL) by laser optical imaging technology simultaneously and the measuring method there for are provided. The device includes an image-capturing device and a laser source. (1)The SS measuring method includes steps of: (a) virtually segmenting water as a plurality of cuboids; (b) projecting a first beam of the laser source into one of the cuboids to scatter a second beam from the cuboids; (c) taking the second beam by using the image-capturing device at M different positions to form M images, where M is a positive integer larger than or equal to 1; (d) determining parameters of the second beams such as transmittance and scattering power to evaluate absorbance; and (e) determining SS concentration of water with absorbance. The manufacturing cost of the invented device is low, and SS concentration of water can be real-time, effectively, precisely determined and monitored by the measuring device and the measuring method of the present invention. (2) The WL measuring device includes a camera, two lasers and an image processing device. The measuring method includes the steps of: (a) disposing the measuring device above the water for a first distance, illuminating the laser beans of two lasers into the water, and taking a first image of the water surface; and (b) transmitting the first image to the image processing device which evaluates the water level by calibrating the distance between the laser points on the first image and by the calibration equation. The first image can be merged with a second image took at another time point so as to magnify the identification of laser points. The measuring device of the present invention can measure the water level contactlessly, accurately and immediately, and decrease the cost of measuring device.

技術規格

即時同步量測SS濃度及水位結果,誤差百分比約為20%(SS)及2%(水位)以內

Technical Specification

An error less than 20% and 2% was obtained from the real-time measuring results of suspended solid (SS) concentration and water level.

技術特色

本發明係關於水中懸浮顆粒(suspended solid, SS)濃度及水位量測裝置及其量測方法,利用雷射光學影像量測裝置及其量測方法,以即時非接觸式光學影像技術量測固定水體或動態水體的水中懸浮顆粒濃度及反應槽及渠道的水位,增加待測項目的即時性及準確性。

應用範圍

淨水處理廠、淨水處理設施、廢污水處理廠、廢污水處理設施、高科技廠廢水處理設施、廢水排放渠道口

接受技術者具備基礎建議(設備)

沉澱池、排放渠道口、數位攝影機、雷射光源、量測裝置、量測槽體

接受技術者具備基礎建議(專業)

環境工程相關科系、環境工程單元操作技術、廢水處理程序設計、水質分析檢測相關技術、影像分析技術

技術分類 工程與自動化研究

聯絡資訊

聯絡人:朱振華 水科技與環境分析技術組

電話:+886-3-5732075 或 Email:ronaldchu@itri.org.tw

客服專線:+886-800-45-8899

傳真:+886-3-5732349

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