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Displacement measurement method based on resistance creep of composite conductive polymer pressure sensitive material

A technology of conductive polymers and pressure-sensitive materials, applied in the field of measurement, to achieve the effects of solving adverse effects, improving displacement measurement accuracy, and reducing resistance creep

Inactive Publication Date: 2012-02-22
NORTHEASTERN UNIV LIAONING
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the existing inventions, and propose a displacement measurement method based on the resistance creep of the composite conductive polymer pressure-sensitive material, which is used to solve the problem of the viscoelastic substrate between the curved surfaces during the creep process. displacement measurement

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  • Displacement measurement method based on resistance creep of composite conductive polymer pressure sensitive material
  • Displacement measurement method based on resistance creep of composite conductive polymer pressure sensitive material
  • Displacement measurement method based on resistance creep of composite conductive polymer pressure sensitive material

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Embodiment Construction

[0023] In the calibration process, the moment of loading completion and the creep stage are calibrated respectively, and the corresponding algorithm is written; in the monitoring process, the force stage of the pressure-sensitive material is first determined through the change of resistance, and then the corresponding The calibration data and algorithm get the displacement value at each moment.

[0024] 1. Calibration process

[0025] (1) Apply load to a pressure-sensitive material to a certain pressure, record the displacement and resistance value at the moment of completion of loading, and obtain N sets of data in total to form the calibration data at the moment of completion of loading. The resistance-displacement calibration curve at the moment of loading completion and the key quantities used for calibration such as figure 1 As shown, "o" in the figure is the calibration point. Wherein, S(i) and R(i) represent the displacement and resistance at the moment of loading com...

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Abstract

The invention relates to a displacement measurement method based on resistance creep of a composite conductive polymer pressure sensitive material, belonging to the technical field of measurement. The method uses resistance creep to reflect displacement variation in real time instead of inhabiting resistance creep. In calibration, resistance-strain properties at the moment of finishing loading application and during creep stage are respectively obtained, and corresponding algorithms are respectively compiled; and in monitoring, at first, the stress phase of the pressure sensitive material is judged through the variation of resistance, and then a corresponding algorithm is used to obtain the real-time displacement value. According to different stress states, the measurement method of the invention uses different calibration methods and algorithms and considers time factors, thus further eliminating the adverse effects of resistance creep of the pressure sensitive material on displacement measurement. As the traditional method of adding nano powder to the substrate to reduce resistance creep is not used, the flexibility of the pressure sensitive material is ensured.

Description

technical field [0001] The invention relates to a displacement measurement method based on the resistance creep of a composite conductive polymer pressure-sensitive material, and belongs to the field of measurement technology. Background technique [0002] The resistance of the composite conductive polymer material changes regularly under deformation, and it has good flexibility and easy processing, so it can be used as a sensitive material for flexible displacement sensors. This material also has good shock absorption, so the flexible sensor based on this pressure-sensitive material is placed in the curved interlayer structure, which can not only complete the interlayer displacement monitoring task, but also play a protective role in shock absorption and buffering . [0003] However, the composite conductive polymer pressure-sensitive material is a kind of viscoelastic material with a macromolecular segment structure, which produces resistance creep under constant pressure...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/02
Inventor 王璐珩时千舒马芳芳刘黄海王雪婷贾世军
Owner NORTHEASTERN UNIV LIAONING
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