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Status detection device

一种状态检测、设备的技术，应用在测量装置、测量流量/质量流量、液体/流体固体测量等方向，能够解决没有提出解决方法等问题

Inactive Publication Date: 2007-10-24
YAMATAKE HONEYWELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] There is currently no workaround for this requirement

Method used

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Examples

Experimental program
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Effect test

no. 1 example

[0373] Next, a first embodiment of the present invention will be described in detail. This embodiment uses the first principle described above. The state detection device according to this embodiment includes an exciting coil and a pair of electrodes, and has the same configuration as the state detection device shown in FIG. 1 except for a signal processing system. This embodiment uses the first extraction method as a method of extracting the _A / _t component from the resultant vector, and obtains the first parameter independent of the excitation frequency. Examples of first parameters are the liquid level or the deposition state of substances adhering to the inside of the measuring pipe.

[0374] When an exciting current having an angular frequency ω0 is supplied to the exciting coil 3 and the first parameter is p1, the inter-electrode electromotive force E110 is expressed by the following equation from equations (19), (65) and (75).

[0375] E110=rk[p1]·ω0·b1·exp{j·(π / 2+θ1+...

no. 2 example

[0421] Next, a second embodiment of the present invention will be described. This embodiment is the same as the first embodiment except that an exciting coil is added to the state detection device, and this embodiment uses the second principle described above. That is, the state detection device of this embodiment includes two exciting coils and a pair of electrodes, and has the same configuration as the state detection device shown in FIG. 5 except for the signal processing system. Therefore, the principle of this embodiment will be described using reference numerals in FIG. 5 . If the second field coil to be added is placed on the same side as the first field coil, the resulting configuration is a redundant configuration of the first embodiment. Therefore, it is necessary to place the second exciting coil on a different side from the first exciting coil with respect to the plane including the electrodes. This embodiment uses the first extraction method as a method of extra...

no. 3 example

[0483] Next, a third embodiment of the present invention will be described. The state detection device according to this embodiment includes two exciting coils and a pair of electrodes, and has the same configuration as the state detection device shown in FIG. 5 except for a signal processing system. Therefore, the principle of this embodiment will be described using reference numerals in FIG. 5 . This embodiment uses the second extraction method as a method of extracting the _A / _t component from the resultant vector to obtain the first parameter independent of the excitation frequency.

[0484]Assume that a first exciting current having an angular frequency ω0 is supplied to the first exciting coil 3a, a second exciting current having an angular frequency ω0 and having a phase difference of Δθ2+π with respect to the first exciting current is supplied to the second exciting coil 3b, and The first parameter is p3. In this case, from the equations (30), (68) and (75), the elec...

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PUM

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Abstract

An excitation unit applies a magnetic field asymmetric to a plane (PLN) and changing as the time elapses, to a fluid. An electrode is arranged on the plane in a measurement pipe and detects a combined electromotive power combining the electromotive force of the dA / dt component (wherein A represents a vector potential and t represents time) generated by the magnetic field applied to the fluid and the flow of the fluid and not related to the flow rate of the fluid and the electromotive force of the v B component (wherein v represents a flow rate and B represents a magnetic flux density) attributed to the flow rate of the fluid. A state quantification unit extracts the dA / dt component from the combined electromotive force detected by the electrode, extracts a fluctuation factor dependent on the parameter to be detected from the dA / dt component, and quantifies the parameter according to the fluctuation factor. Here, the parameter is at least one of the characteristic of the fluid, the state of the fluid, and the state inside the measurement pipe. Thus, by using the same hardware configuration as the flowmeter of the electromagnetic induction type, it is possible to detect the characteristic and the state of the fluid and the state inside the measurement pipe.

Description

technical field [0001] The present invention relates to a state detection device for detecting the property or state of a fluid, or the state of a measuring pipe through which the fluid flows. Background technique [0002] Generally, in order to measure the flow rate with a flowmeter, it is necessary to detect the property or state of the fluid, the state of the pipeline through which the fluid flows, and the flow rate of the fluid to be measured. For example, in a production line for mixing chemical solutions, etc., a property such as fluid conductivity or permittivity is measured along with the flow rate of the fluid. Also, when a large amount of substance adheres to the inside of the measurement pipe, the state of deposition of the substance in the measurement pipe is measured in order to know the maintenance period of the measurement pipe. With regard to sewers, there have been demands for measuring liquid levels and deposition states of substances adhering to the insid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/60
CPCG01N27/72G01F23/26G01F1/60G01F1/584
Inventor 山本友繁
Owner YAMATAKE HONEYWELL CO LTD
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