Displacement detection method, device and liquid level measuring device
A liquid level measurement device and displacement detection technology, applied in the field of measurement, can solve the problems of short range, high cost, inconvenient installation, etc., and achieve the effects of reducing the overall height, improving the protection level, and prolonging the service life
Active Publication Date: 2020-05-15
贵州航天智慧农业有限公司
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Problems solved by technology
This liquid level measuring device has a large volume, occupies a large lateral area, and has a short measuring range.
Moreover, this device is inconvenient to install and requires certain technical skills, so it is not suitable for on-site non-professional installation in harsh environments in industries such as agriculture and water conservancy.
In addition, this liquid level measuring device is difficult to adapt to the harsh environment, which affects the use of the system
[0003] For the resistive liquid level measuring devices used in the field of liquid level sensors in rice fields, ponds, and ditches, there are problems such as poor sealing, wear and tear, short life, and poor stability.
The sonar liquid level measurement device has problems such as high power consumption, not conducive to low power consumption design, large volume, and high cost
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[0067] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals denote the same or similar parts in the drawings, and thus their repeated descriptions will be omitted.
[0068] Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or mo...
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The disclosure relates to a displacement detection method and device and a liquid level measurement device. The displacement detection method comprises the steps of: according to measured values froma plurality of linear Hall effect units linearly arranged, determining a first linear Hall effect unit of which the measured value is an extreme value and a second linear Hall effect unit which is adjacent to the first linear Hall effect unit and of which the measured value is a secondary extreme value; according to an arrangement sequence of the first linear Hall effect unit and the second linearHall effect unit, acquiring a main of a longitudinal position of a reference point of a magnet relative to an array linear Hall effect unit module; and using a ratio between the measured value from the first linear Hall effect unit and the measured value from the second linear Hall effect unit as an input of a lockup table so as to determine a component of the longitudinal position of the reference point of the magnet relative to the array linear Hall effect unit module. According to the method provided by the disclosure, high-resolution measurement can be implemented.
Description
technical field [0001] The present disclosure relates to the technical field of measurement, in particular, to a liquid level measuring device. Background technique [0002] Displacement detection devices are required in many fields. For example, in the field of liquid level measurement, the existing Hall displacement sensor liquid level measurement device mainly adopts the form of a lever float, which drives the magnet to move in a small range (within a few centimeters) through the lever, and senses the magnet through the Hall sensor. The displacement of the liquid level is converted according to the lever principle to obtain the moving range of the liquid level. This liquid level measuring device has a large volume, occupies a relatively large lateral area, and has a short measuring range. Moreover, this device is inconvenient to install and requires certain technical capabilities, so it is not suitable for on-site non-professionals to install under harsh environments in...
Claims
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IPC IPC(8): G01F23/62
CPCG01F23/62
Inventor 刘亮韩立业李江龙鲍义东粟小娓柳芳
Owner 贵州航天智慧农业有限公司