Electrode type digital liquid level controlling device

An electrode-type, digital technology, applied in the direction of liquid level control, non-electric variable control, control/regulation system, etc., can solve the problems of poor anti-interference ability of analog signals, large energy consumption of equipment, poor working stability, etc., and achieve structural Compact, reliable and stable operation
CN1339728AInactive Publication Date: 2002-03-13黄武源
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
黄武源
Publication Date
2002-03-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention discloses a kind of electrode type digital liquid level controlling device. Weak pulse signal detected by the sensor probe is treated before it is fed to digital pulse signal inA / D converter and used for logic operation and judgment in central controller to complete intelligent control. The present invention has stable running, low operation cost, strong antijamming capacity and low power consumption, and may be used in the intelligent control of various water supply and draining system.
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Description

[technical field]

[0001] The invention relates to an automatic controller, in particular to an electrode type liquid level numerical control device. [Background technique]

[0002] There are many existing liquid level control methods and methods in our country, and the ones still in use in the market are:

[0003] 1. Float-type and reed switch-type liquid level control devices in the 1950s and 1960s are all mechanical strong current controls with contacts. The products are of low grade, short service life, unstable work, and poor reliability. The cost of dry reed switch is high, and maintenance is extremely inconvenient.

[0004] 2. At the end of the 1980s, the pressure tank type liquid level strong current control and the weak current control of the electronic circuit appeared. The liquid level control of the pressure tank is also a mechanical strong electric control with contacts, and it is a pressure vessel with large volume, high cost, poor versatility, and inconvenien...

Claims

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