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Needle type roughmeter

A roughness, needle-type technology, used in instrumentation, height/level measurement, mapping and navigation, etc., can solve the problems of small one-time measurement area, low sampling interval, separation of different scales, etc., to achieve compact structure and easy operation. , high precision effect

Active Publication Date: 2010-07-14
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a needle-type roughness meter for measuring the surface roughness of the ground, which is used to solve the problem of large measurement error and one-time measurement area when the existing single-line roughness meter obtains roughness parameters through repeated single-line measurement. Small size, low sampling interval, and inability to separate different scales from spectral data

Method used

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Examples

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Embodiment Construction

[0044] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0045] The pin-type roughness meter of the present invention will be described in detail below in conjunction with the accompanying drawings. Such as figure 1Shown is a schematic structural view of the pin-type roughness meter. The roughness meter comprises: a support frame 1, which has parallel horizontal slide rails, and a millimeter scale is fixed along the direction of the slide rails, and the support frame 1 also has three strip-shaped vials; The inside of the support frame 1 slides along the parallel slide rails, and there is a horizontal slide rail perpendicular to the slide rails of the support frame 1. The outer moving part 2 also has a pointer pointing to the scale on the support frame 1, so as to read The sliding distance of the outer moving part 2 in the direction of the parallel slide rails of the support frame 1, the ou...

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Abstract

The invention relates to a needle type roughmeter, which comprises a support frame, a motion part, a plurality of faceplates and steel needles, wherein the support frame is provided with parallel slide rails; the motion part is positioned in the support frame and slides along the parallel slide rails, and the relative inner side wall of the motion part is provided with a plurality of faceplate inserting grooves; the faceplates are inserted into the faceplates inserting grooves and are provided with a plurality of vertical steel needles inserting grooves along the length direction; and the steel needles are inserted into the steel needles inserting grooves and can vertically fall onto the ground along the steel needles inserting grooves. The needle type roughmeter measures the roughness of the fixed surface, can measure area arrays for once and measure surfaces with a certain gradient, is convenient in operation, and has high precision.

Description

technical field [0001] The invention relates to the field of measuring devices and technologies, in particular to a needle-type roughness meter for measuring ground surface roughness. Background technique [0002] In order to describe the irregular random surface, its elevation is usually regarded as a two-dimensional random field, that is, a random process with 2 parameters: z(x, y), where x, y represent the horizontal coordinates. The mean square error of surface elevation calculated on this basis, the correlation length, or the fitted correlation length function, and the frequency spectrum of the correlation length become surface characteristic parameters such as roughness parameters and roughness spectrum. [0003] The most commonly used roughness parameter in the microwave remote sensing surface scattering model is the two-dimensional roughness spectrum W(k x , k y ). For example, the SPM model, the IEM model, the Kirchhoff low frequency (scalar approximation), and t...

Claims

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Application Information

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IPC IPC(8): G01C7/02G01C5/00
Inventor 秦其明沈心一赵少华
Owner PEKING UNIV
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