Composition ratio estimation device, method and program, and liquid level gauge
A technology for inferring devices and ratios, used in measuring devices, liquid level indicators, lubrication indicating devices, etc., to solve problems such as range limitations and complexity
Pending Publication Date: 2020-03-10
MUSASINO
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- Description
- Claims
- Application Information
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Problems solved by technology
However, when the height of the liquid level changes, it is necessary to calculate the relative permittivity every time, which is complicated, and the range of the liquid level that can be measured is also limited.
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Embodiment Construction
[0023] Hereinafter, embodiments of a composition ratio estimation device and a liquid level gauge having the composition ratio estimation device according to the present invention will be described with reference to the drawings.
[0024] Composition Ratio Estimator(1)
[0025] exist figure 1 Among them, the liquid level gauge 1 is a device for measuring the liquid level of a liquid or the like stored in the tank 30 as an object to be measured.
[0026] The contents are stored in the lower part of the tank 30 as a liquid 40 . The stored object is a mixture, and the substances contained in the stored object have different boiling points. In the space 31 above the region where the liquid 40 is stored inside the tank 30, a temperature at which at least one of the mixtures of the contained objects reaches the boiling point can be obtained. The temperature of the stored liquid 40 is lower than the temperature around the tank 30 , so the temperature of the space 31 is relatively ...
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A composition ratio estimation device estimates a composition ratio of a content having mixed substances with different boiling points in a tank. The content is retained as a liquid in the tank lowerpart. The substances are partially floatable as a gas or liquid in a space in the tank upper part. The device includes a reference object disposed in the space, a transmitting-receiving unit that transmits radar waves toward the reference object and the surface of the liquid and receives radar waves reflected by the reference object and the surface of the liquid, a temperature measuring unit thatacquires a level at which a boiling point of a substance that floats as gas and liquid is reached in the space, a dielectric constant calculating unit that stores in advance a physical distance between the unit and the object and calculates a dielectric constant of a space between the unit and the object on the basis of the physical distance and the radar waves reflected by the reference object, and a composition ratio derivation unit that derives a composition ratio of the liquid on the basis of a dielectric constant of the space between the transmitting-receiving unit and the reference object as well as the position of the boiling point.
Description
technical field [0001] The present invention relates to a composition ratio estimation device, a composition ratio estimation method, a composition ratio estimation program, and a liquid level gauge using the composition ratio estimation device. Background technique [0002] There is known a liquid level gauge that measures the height of the liquid level in a tank that stores objects such as liquids. [0003] In the radio wave type liquid level gauge, the radar signal sent from the transmitter and receiver module is converted into electromagnetic wave, that is, radar wave by the transducer. This radar wave travels towards the liquid surface, is reflected from the liquid surface, and is converted back into a radar signal by the transducer. The sending and receiving module deduces the height of the liquid surface based on the radar signal obtained through inverse conversion. [0004] In liquid level gauges that calculate the liquid level based on radar waves reflected from t...
Claims
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IPC IPC(8): G01F23/284G01N25/08G01R27/26
CPCG01N25/08G01R27/2623G01F23/284G01S13/88G01S7/411G01N22/00G01K1/02G01N2027/222G01N27/221G01F23/804
Inventor 大浦秀人村石明裕
Owner MUSASINO