High-reliability shock-resistant linear displacement sensor and measuring method thereof

A technology of linear displacement and impact resistance, applied in the direction of measuring devices, instruments, etc., can solve the problems of low precision in laboratory conditions, and achieve the effects of strong environmental adaptability, high measurement accuracy, and small nonlinear error

Inactive Publication Date: 2013-10-16
SHENYANG ACAD OF INSTR SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Some displacement sensors based on the above principles can only meet the measurement conditions of low precision requirements, and some can only be applied under laboratory conditions.

Method used

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  • High-reliability shock-resistant linear displacement sensor and measuring method thereof
  • High-reliability shock-resistant linear displacement sensor and measuring method thereof
  • High-reliability shock-resistant linear displacement sensor and measuring method thereof

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Embodiment Construction

[0028] like figure 1 As shown, the high-reliability impact-resistant linear displacement sensor includes a detection rod 1, a probe 4, a probe housing 2, a working coil 3 and a working circuit 6 fixedly arranged in the probe housing 2; the end of the detection rod 1 It is fixedly connected with the end of the probe 4; the detection rod 1 and the probe 4 are located in the working chamber 7 formed by the working coil 3; the ports of the working circuit 6 are respectively connected to the input of the primary coil and the secondary coil in the working coil 3 / output terminal; the working circuit 6 includes an analog signal processing module, a signal conditioning module and an intelligent digital processing module; the signal transmission port of the analog signal processing module is connected with the signal transmission port of the intelligent digital processing module through the signal conditioning module; The working circuit 6 is located in the bottom area of ​​the probe ...

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Abstract

The invention relates to the field of a displacement sensor, especially to a high-reliability shock-resistant linear displacement sensor and a measuring method thereof. The linear displacement sensor comprises a detection pull bar (1), a probe (4), a probe shell (2), a working coil (3) fixedly arranged in the probe shell (2), and a working circuit (6) fixedly arranged in the probe shell (2); and the end portion of the detection pull bar (1) is fixedly connected with the end portion of the probe (4). When measurement is carried out concretely, a single-chip microcomputer system carries out analog-digital conversion on current displacement and a current environmental temperature of the sensor; according to an actual measurement temperature value, a temperature excursion compensation value between an actual value and a theoretical output value is calculated; a linear correction coefficient is calculated according to a linear correction formula, thereby obtaining an ideal data result after the compensation and correction; and analog outputting and digital outputting are respectively carried out. According to the invention, the linear interval is long; a non-linear error is small; the environmental adaptation is high; the measurement precision is high; and requirements of various environments like vibration, shocking, salt mist, steady hygrothermal and underwater soaking environments and the like can be met.

Description

technical field [0001] The invention belongs to the field of displacement sensor devices, in particular to a highly reliable impact-resistant linear displacement sensor with the characteristics of high precision and low drift and a measuring method thereof. Background technique [0002] Displacement sensor is one of the most widely used sensors, occupies a very important position in automatic detection technology, and has been widely used in many fields. There are many types of sensors used for displacement measurement. The electronic principles include resistive, capacitive, potentiometer, inductive, etc., and the optical principles include grating, photoelectric, and optical fiber. Some displacement sensors based on the above principles can only meet the measurement conditions of low precision requirements, and some can only be applied under laboratory conditions. However, in some special applications, not only the displacement sensor is required to have high measurement ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/02
Inventor 李永清彭春文刘妍关杰张建芦越栋胡竞董清波梁永胜孟祥慧
Owner SHENYANG ACAD OF INSTR SCI
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