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Intelligent light source linear array CCD liquid level measuring method and device

A technology of liquid level measurement and measuring devices, which is applied in the direction of measuring devices, liquid/fluid solid measurement, lubrication indicating devices, etc., and can solve problems such as difficult system errors

Inactive Publication Date: 2009-08-19
如皋市生产力促进中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The structure of this method is relatively simple, but since the glass tube itself is a lens, there needs to be a certain distance between the linear array CCD and the glass tube, which is prone to produce system errors that are not easy to control

Method used

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  • Intelligent light source linear array CCD liquid level measuring method and device
  • Intelligent light source linear array CCD liquid level measuring method and device
  • Intelligent light source linear array CCD liquid level measuring method and device

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Embodiment Construction

[0021] combine figure 1 The optical total reflection linear array CCD liquid level measuring device includes LED line light source 3 and transparent protective cover 4, airtight box 7, linear array CCD 6, control circuit unit 8 (including: CCD drive circuit, data acquisition and processing circuit, light source Point-by-point switch control circuit and data transmission circuit), the linear array CCD6 is embedded in a slot with the same width as the width of the CCD chip on one side of the airtight box 7, and the gap between the slot and the CCD6 is implemented on the inner and outer sides of the airtight box 7 Sealing, while guaranteeing that the protective glass of CCD6 slightly protrudes from this side of airtight casing 7. The airtight box 7 is placed in the container 5 containing the liquid to be measured 2 (or close to the side wall of the container), and the linear array CCD is perpendicular to the horizontal plane, while the liquid level 1 is in the middle of the linea...

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Abstract

The invention discloses an intellectualized light source linear array CCD liquid level measurement method and a measurement device. By using a feedback measurement structure, the method can obtain a result of comparably high precision through measurement of twice or a plurality of times and the intellectualized regulation of the light source. The device mainly consists of a point-to-point switch controllable linear array light source, a linear array CCD, a control circuit, etc. During the measurement of liquid level, all the luminous points on the linear array light source intelligently complete primary measurement scanning and determine the basic position of liquid level; the partial luminous points on the linear array light source are closed so as to complete the accurate measurement of liquid level. The intellectualized light source linear array CCD liquid level measurement method is a liquid level measurement method with higher precision and also an optical liquid level measurement method needing no optical imaging lenses, and has the advantages of little effect on the precision by the temperature change and concentration change of liquid, relatively simple structure, easiness for arrangement and the capability of working under corrosiveness and other vile industrial environments, etc. If a receiving device is arranged outside a transparent container, non-contact measurement can be realized.

Description

(1) Technical field [0001] The invention relates to a liquid level measuring method and device, in particular to an intelligent light source linear array CCD liquid level measuring method and a measuring device. (2) Background technology [0002] Liquid level is one of the most important and commonly measured parameters in industrial processes. The measurement of liquid level mainly refers to the position measurement technology of vapor-liquid, liquid-liquid, liquid-solid interface, which is widely used in liquid storage equipment such as chemical industry, petroleum and power plant. The existing liquid level measurement methods include pressure liquid level measurement method, floating liquid level measurement method, capacitive liquid level measurement method and ultrasonic liquid level measurement method, etc., but when the liquid concentration, temperature changes or is restricted by the environment, the above measurement The resolution of the method is low, the error i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F23/292
Inventor 温强孙华彭秀艳杨依珍王伟强邵永丰谭爽
Owner 如皋市生产力促进中心
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