Teaching experimental apparatus for control of ultrasonic level

A technology for controlling experiments and teaching devices, applied in measuring devices, teaching models, lubrication indicating devices, etc., can solve the problems of high maintenance costs, reduce maintenance costs, solve software and hardware debugging, observe the effect of level control, and strengthen understanding Effect

Inactive Publication Date: 2012-10-10
HARBIN INST OF TECH
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  • Abstract
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Problems solved by technology

[0006] The purpose of the invention is to provide an ultrasonic level control experimental teaching device for the shortcomings of the existing process control course teaching experimental device and the high maintenance cost of the traditional experimental device, which realizes the non-contact me

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  • Teaching experimental apparatus for control of ultrasonic level
  • Teaching experimental apparatus for control of ultrasonic level
  • Teaching experimental apparatus for control of ultrasonic level

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Embodiment Construction

[0018] In order to make the purpose, technical solutions and advantages of this creation clearer, the creation will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0019] In the description of the embodiments of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "rear", "inner" and "outer" are based on the drawings. The orientation or positional relationship shown is only for the convenience of describing the embodiment of the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a Invention Limitati...

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Abstract

The invention discloses a teaching experimental apparatus for control of an ultrasonic level. The teaching experimental apparatus comprises a controlled object, an ultrasonic level meter, an upper computer, and a system power branch consisting of a frequency converter and a centrifugal blower; each part of an ultrasonic level control system communicates through a foundation field (FF) bus; and the configuration and system monitoring of the bus are completed by the upper computer. According to the teaching experimental apparatus, the non-contact measurement and FF bus technology of the level control system are combined, and the liquid level measurement in the conventional level experimental apparatus is replaced with the level height measurement of a floating body blown by air, so that the water-getting and waterproofing problems in the liquid level measurement are avoided; meanwhile, the floating body changes obviously in position, so that students can understand the operating principle and process of a single-loop closed-loop control system easily in the teaching experiment and also gain a preliminary recognition and understanding for the use of a modern field bus applied to a process automation system; and furthermore, the teaching experimental apparatus for the control of the ultrasonic level is easy to maintain.

Description

technical field [0001] The invention relates to the technical field of teaching experiment demonstration instruments, in particular to an experimental teaching device for ultrasonic level control for teaching. Background technique [0002] In modern industrial production automation, material level is one of the important process parameters, and the measurement and control of material level is an important task to realize industrial production automation. In the industrial production process, the material level generally refers to the liquid level, solid particle and powder particle level, and the liquid-liquid, liquid-solid phase interface position. The one that measures the position of the liquid level is called a liquid level gauge, the one that measures the position of solids and powders is called a level gauge, and the one that measures the position of the liquid-liquid, liquid-solid phase interface is called a phase interface gauge. [0003] In view of the fact that th...

Claims

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Application Information

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IPC IPC(8): G09B23/06G01F23/296
Inventor 李成伟胡瑞强高彩霞李德毅
Owner HARBIN INST OF TECH
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