Three-dimensional small-measuring range force transducer

A force sensor and small-range technology, which is applied in the field of small animal foot contact force testing, can solve the problem of high overall system cost, and achieve the effects of simple structure, small inter-dimensional coupling, and convenient installation

Inactive Publication Date: 2008-12-10
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0005] In 2003, Xu Yi from Beijing University of Science and Technology, Yu Daifeng and Song Chunning from Shandong University of Science and Technology constructed the MBFMAS (Motion Body 3-D Force-Measuring Analyzing System), which can be used as a test and analysis system for sports biomechanics teaching and scientific research. Due to the purchase of foreign products, the overall cost of the system is relatively high

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Embodiment Construction

[0019] Such as figure 1 , figure 2 As shown, the overall structure of the three-dimensional small-range force sensor designed by the present invention consists of shape elastic body and Shaped fixed base, the material is hard aluminum alloy LY12. The elastic body structure is composed of elastic body beams 1, 2, 3, 4, the outer vertical beams 1 and 2 are connected with the fixed base 22, the horizontal beam 3 is connected with the outer vertical beams 1, 2, and the center of the horizontal beam 3 is connected There is a central vertical beam 4 perpendicular to it, and four elastic beams form a shaped structure. At the ends of the outer vertical beams 1 and 2 near the fixed base 22, rectangular through holes 5 and 6 in the Z direction are symmetrically opened, and resistance strain gauges are pasted at positions 10, 11, 12, and 13 to form the first group of Wheats When the full-bridge measurement circuit is mounted, when the force in the X direction acts on the top of ...

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Abstract

A 3D small-range force sensor belongs to the technical field of mechanical testing technology and sensor application technology. The integral structure of the 3D small-range force sensor consists of a ''reversed Y-shaped'' elastomer and a fixing pedestal; wherein, two external vertical beams (1), (2) are provided with Z-direction rectangle through holes (5),(6) near the fixing pedestal; a horizontal beam (3) is provided with Z-direction rectangle through holes (7),(8) near a central vertical beam (4); the outer sides of the two thin walls of the two through holes on the two external vertical beams are stuck with four strain foils; the outer sides of the two thin walls of the two through holes on the horizontal beam (3) are stuck with four strain foils; the outer sides of the thin walls at the two ends of the through holes on the central vertical beam(4) are provided with four strain foils. Three groups of Wheatstone Bridges are formed. The range of each dimension of the invention is between 0 to 5N and can be used for testing the contact force of the sole of a small animal when creeping.

Description

technical field [0001] The three-dimensional small-range force sensor of the invention belongs to the field of mechanical testing technology and sensor application technology, and relates to the technology of testing small animal foot contact force. Background technique [0002] Tree frogs have the ability to crawl quickly, freely, and flexibly on trees and vertical walls. In-depth research on the adsorption and desorption mechanism of tree frog foot suckers and the crawling laws of tree frogs is used for the development of bionic adsorption materials, bionic Provide a theoretical basis for wall-climbing robots and other special robots working in various complex environments. While studying animal movement, the contact force between the animal's paw and the crawling surface is one of the most important pieces of information. It can reveal the law of animal movement in complex environments, and provide bionic mechanics data on motion mechanisms and gaits for the design of ro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/22G01L5/00
Inventor 王卫英王军李伟
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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