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Method for producing digital indexing type water level sensor

A water level sensor and sensor technology, applied in the direction of liquid level indicators for physical variable measurement, to achieve the effects of easy installation and use, expanding the scope of application, and strong adaptability

Inactive Publication Date: 2004-10-27
TAIYUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Make it adaptable to various conditions of use

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  • Method for producing digital indexing type water level sensor
  • Method for producing digital indexing type water level sensor
  • Method for producing digital indexing type water level sensor

Examples

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Embodiment Construction

[0039] Sensor section A: diameter 40mm, length 120mm. Transmitter, clock, CPU, retrieval command circuit, constant voltage circuit board and 5V dormant power supply circuit are assembled on the inner frame.

[0040] Sensor section B: diameter 40mm, length 640mm. A search circuit, a gate circuit, a sampling circuit board and 64 sensing element electrodes are assembled on the inner frame.

[0041] Section C of the sensor: a nickel-chromium alloy body with a diameter of 40mm and a length of 50mm. The skeleton of the sensor chip is made of epoxy resin board, after being assembled and debugged according to each section of the circuit, it is put into the mold and cast with epoxy resin. (The chip and the shell become one entity after casting)

[0042] The lead terminal is a self-designed plug-in lead terminal with a water seal, (the connector does not need to be waterproofed after it is plugged and fastened.

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Abstract

The water level sensor includes A, B, C three sections. Several sensing cells samples signal at water level points in digital indexing type; microprocessor carries out data statistics; and RS-485 interface in international standard outputs signal. The circular bar type sensor containing internal circuit in solid state is made from moldable insulation material through molding procedure. Sampling, processing, converting and transferring signals are implemented in digit mode so as to avoid unstable and unreliable factors from temperature and interference of electromagnetic field in analog mode. The device is compatible to other digital devices providing simple structure, stable and easy of maintenance.

Description

technical field [0001] The invention relates to a method for preparing a digital retrieval type water level sensor, which belongs to the technical field of automatic detection, and specifically relates to a method for preparing a sensor for water level detection. technical background [0002] At present, there are many technologies and products used in water level detection at home and abroad, which can be summarized as follows: [0003] 1. Ultrasonic sensor. These products are mainly suitable for water level detection in wide waters. The instrument is installed above the water surface, emits and receives electromagnetic waves to the water surface, and measures the reflected wavelength and period of the electromagnetic wave to measure the distance from the water surface to the instrument, thereby measuring the water level. At present, there are manufacturers of such products at home and abroad. Such as the Chinese patent "Adaptive Ultrasonic Liquid Level Meter" Patent No....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F23/22
Inventor 马珺马福昌贾秀美
Owner TAIYUAN UNIV OF TECH