Liquid crystal sensing collision measurement device and method

A measuring device and sensing technology, applied in the direction of educational appliances, instruments, teaching models, etc., can solve the problems that students are difficult to understand the magnetic linear displacement sensor, lack of measuring instruments, etc.

Inactive Publication Date: 2019-04-30
崔胡晋
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] The application of the magnetic linear displacement sensor to measure the moving distance and speed of the moving object has some measurement applications in practice. However, since most of the applications are integrally packaged structures, it is not easy for students to understand the magnetic linear displacement sensor well. The application of displacement sensors also lacks corresponding measuring instruments

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  • Liquid crystal sensing collision measurement device and method
  • Liquid crystal sensing collision measurement device and method
  • Liquid crystal sensing collision measurement device and method

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Embodiment Construction

[0015] In conjunction with the accompanying drawings, the working and circuit conditions of a liquid crystal sensor collision measurement device and method will be described in detail below.

[0016] The digital signal processor in the host of the measuring instrument needs to access memory and other peripheral chips, so a decoder is needed for access control and address decoding. The chip used in the decoding circuit of the measuring instrument is 74F138. Usually the clock frequency of TMS320C31 is 33MHz, and the instruction cycle is 60ns, so the running speed is very fast. The operating speed of peripheral devices must meet the timing requirements of DSP. DSP allows a read access time of 35ns, and the delay of 74F138 from address line input to chip select signal output is less than 10ns, which has a margin to meet the timing requirements of DSP.

[0017] The AD converter of the A / D circuit of this measuring instrument is 12-bit analog-to-digital converter AD1674 from Americ...

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Abstract

The invention relates to a liquid crystal sensing collision measurement device and method. The liquid crystal sensing collision measurement device is composed of a liquid crystal sensing collision measurement device and method host based on a digital signal processor and a measurement platform. The host of the liquid crystal sensing collision measurement device is provided with a liquid crystal display screen, a menu key, selection function keys, a start key, a signal port 1 and a signal port 2. The platform of the measurement device is composed of magnetostrictive linear displacement sensors,signal lines, trolleys with magnetic rings, waveguide tubes, a spring, trolley guide rails, balance adjusting foot nails and a horizontal liquid bubble. A digital signal processor and a signal processing, control and liquid crystal display circuit are arranged in the measurement device. The measurement instrument enables students to better understand and master the law of motion and collision through the use and measurement of the magnetostrictive linear displacement sensors. The measurement instrument is reasonable in structure, is convenient to operate, has a good teaching effect, and is suitable for teaching experiments of courses such as mechanics, sensing technology and physics of colleges and universities.

Description

technical field [0001] The invention relates to a liquid crystal sensing collision measurement device and method, belonging to the experimental field of physics, mechanics, sensing technology and other related courses in colleges and universities. Background technique [0002] A liquid crystal sensing collision measuring device and method is a measuring instrument developed by using a magnetically induced linear displacement sensor. The magnetic linear displacement sensor is a high-precision, long-stroke absolute position measurement displacement sensor manufactured according to the principle of magnetostriction. It adopts an internal non-contact measurement method. Since the movable magnetic ring for measurement is not in direct contact with the sensor itself, it will not be rubbed or worn. Therefore, it has a long service life, strong environmental adaptability, and high reliability. It can adapt to various A harsh industrial environment, and can accurately measure the di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/18
CPCG09B23/187
Inventor 崔胡晋
Owner 崔胡晋
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