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Level information monitoring method, device and system

A liquid level information and monitoring system technology, applied in the field of electronic information, can solve the problems of inaccurate liquid level information monitoring results and inaccurate judgments, and achieve the effect of eliminating changes in physical characteristics and improving accuracy

Active Publication Date: 2014-05-07
SHENZHEN CHIPSBANK TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the temperature of the measured liquid changes, the conductivity changes, or the liquid level information monitoring environment is subjected to electromagnetic interference, the size of the capacitance will be affected, resulting in inaccurate liquid level information monitoring results. Accurately judge whether the liquid in the liquid storage container is used up according to the monitoring result

Method used

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  • Level information monitoring method, device and system

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Experimental program
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Embodiment 1

[0045]Embodiment 1 of the present invention discloses a liquid level information monitoring method, which is applied to a liquid level information monitoring system. The system has a liquid level detection rod inserted longitudinally into the liquid under test and an environment detection rod placed outside the liquid under test to To improve the accuracy of liquid level information monitoring results, so as to accurately determine whether the liquid in the liquid storage container has been exhausted, the method includes:

[0046] Step 100: Obtain capacitance sampling values ​​of the liquid level detection rod and the environment detection rod, and perform filtering processing respectively.

[0047] Put the liquid level detection rod in the measured liquid to get the capacitance with the measured liquid and air as the dielectric. When the height of the measured liquid changes, it will cause the capacitance charge and discharge phenomenon, so that the capacitance of the liquid l...

Embodiment 2

[0071] Based on Embodiment 1, Embodiment 2 of the present invention discloses yet another liquid level information monitoring method, which is applied to a liquid level detection method using a single-channel capacitive touch chip as an environmental detection rod and a multi-channel capacitive touch chip as a liquid level detection rod. An information monitoring system, wherein the liquid level detection rod is a multi-channel capacitive touch chip with a plurality of vertically arranged capacitive touch electrodes, and the distance between two adjacent capacitive touch electrodes is not greater than zero, so as to improve the liquid level. The accuracy of information monitoring results, so as to accurately judge whether the liquid in the liquid storage container has been exhausted, and obtain accurate liquid level measurement information; see figure 2 , the method includes:

[0072] Step 100: Obtain capacitance sampling values ​​of the liquid level detection rod and the env...

Embodiment 3

[0084] see Figure 4 , Embodiment 3 of the present invention discloses a liquid level information monitoring device, which is applied to a liquid level information monitoring system. The system has a liquid level detection rod inserted longitudinally into the liquid to be measured and an environment detection rod placed outside the liquid to be measured. In order to improve the accuracy of liquid level information monitoring results, it can be accurately judged whether the liquid in the liquid storage container has been exhausted. The device includes a first acquisition module 100, a second acquisition module 200, a filter module 300, a threshold determination module 400 and a first processing module 500, wherein:

[0085] The first acquisition module 100 is configured to acquire the capacitance sampling value of the liquid level detection rod;

[0086] The second obtaining module 200 is used to obtain the capacitance sampling value of the environmental detection rod;

[008...

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Abstract

The embodiment of the invention discloses a level information monitoring method, a level information monitoring device and a level information monitoring system. The level information monitoring method and the level information monitoring device are applied to the level information monitoring system. The level information monitoring system comprises a liquid level detecting rod inserted into detected liquid longitudinally and an environment detecting rod arranged outside the detected liquid. The level information monitoring method comprises the following steps: acquiring capacitance sampling values of the liquid level detecting rod and the environment detecting rod, and filtering the capacitance sampling values respectively; determining a sampling threshold value corresponding to physical properties of the detected liquid, wherein the sampling threshold value is a capacitance sampling value in a critical state that the liquid level detecting rod contacts the detected liquid; and when the filtered capacitance sampling value of the liquid level detecting rod is detected to be smaller than the sum of the sampling threshold value and the filtered capacitance sampling value of the environment detecting rod, sending out a prompt message indicating that the detected liquid is used up to improve the accuracy of a level information monitoring result so as to accurately judge whether liquid in a liquid storing container is used up.

Description

technical field [0001] The present invention relates to the technical field of electronic information, more specifically, to a liquid level information monitoring method, device and system. Background technique [0002] For household or industrial control equipment equipped with a liquid storage container, it is necessary to monitor its liquid level information in real time, so that when the liquid in the liquid storage container is used up, feedback can be given in time. [0003] The existing technology utilizes the principle of capacitance charging and discharging, and inserts a detection rod composed of two electrode plates into the liquid to be measured to form a capacitor. When the height of the detection rod changes when the liquid to be measured changes, the capacitance value of the capacitor will change accordingly, thereby The liquid level information of the measured liquid can be obtained by sensing the capacitance value (that is, the capacitance sampling value of ...

Claims

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Application Information

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IPC IPC(8): G01F23/26
Inventor 刘尚林
Owner SHENZHEN CHIPSBANK TECH