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Planimeter detection method

A detection method and technology of a plotter, which are applied in the field of plotter detection, can solve problems such as the inability to accurately reflect the detection accuracy of the plotter, and achieve the effects of high shape stability, high reliability, and not easy to absorb water.

Active Publication Date: 2021-08-20
上海市市政公路工程检测有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, when users do the planimeter detection, they usually use the planimeter to detect regular-shaped pictures, use the calculation formula of the regular shape to calculate the area, and check the readings of the planimeter to judge the accuracy of the planimetry. The inventor It is believed that the use of regular shapes to check the planimeter cannot accurately reflect the detection accuracy of the planimeter when it normally measures the special-shaped area

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] refer to figure 1 , a kind of planimeter detection method, comprises the steps:

[0045] S1. Take a test piece with uniform density and thickness. The thickness of the test piece is d. Ultrasonic density testing is performed on the test piece for ultrasonic declaration to ensure that the test piece has a uniform density and no bubbles, cracks or wormholes. In the embodiment, the paper with a thickness of 1 mm is used, and the paper with a certain thickness can effectively reduce the requirements for subsequent measuring instruments;

[0046] S2, obtain the precise density ρ of the test piece 1 ; The precise density ρ of the test piece 1 It can be obtained directly through the paper acquisition method. If you are worried about the precise density ρ obtained directly 1 is not accurate enough, the following scheme can also be used to obtain the actual precise density ρ 1 , including the following steps;

[0047] S21, using scissors to cut or punch the test piece to a ...

Embodiment 2

[0055] A kind of planimeter detection method, the difference with embodiment one is that the detection sheet adopts the metal sheet that thickness is 2mm, such as stainless steel sheet or pure copper, the density uniformity of pure copper is higher, the mode of cutting detection sheet is uniform. Using wire cutting.

[0056] Compared with Example 1, the paper has a certain degree of water absorption, while the weight and properties of the metal sheet are relatively stable, and the experimental accuracy is better. In addition, in the process of using the planimeter for detection, because the shape of the metal sheet is relatively stable, the planimeter In the process of detecting the edge of the irregular shape, the collection accuracy of the irregular shape is higher, because the paper is easy to roll and bend, in order to cooperate with the use of the metal sheet, the wire cutting is used to ensure the cutting accuracy of the metal sheet.

Embodiment 3

[0058] refer to figure 2 , a kind of planimeter detection method, comprises the steps:

[0059] S1, manufacturing or taking test sheets with uniform density and thickness;

[0060] S2, cutting the detection piece to a regular shape, and obtaining the quality D of the regular shape detection piece 1 , Calculate the area S of the regular shape detection piece 1 , through D 1 / S 1 Calculate the base ratio i 1 ;

[0061] S3, cutting the detection piece to an irregular shape;

[0062] S4, weighing the weight D of the detection piece after cutting 2 , use the planer to be tested to measure the area S of the cut test piece 2 , through D 2 / S 2 Calculate the experimental ratio i 2 ;

[0063] S5, comparison base ratio i 1 and the experimental ratio i 2 , if the experimental ratio i 2 The closer to the benchmark ratio i 1 , the precision of the integrator is higher, if the experimental ratio i 2 Ratio to fine benchmark i 1 The larger the difference, the worse the accu...

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Abstract

The invention relates to the field of road detection equipment checking, and discloses a planimeter detection method, which comprises the following steps of S1, manufacturing or taking a detection sheet with uniform density and thickness, the thickness of the detection sheet being d; S2, acquiring the accurate density of the detection sheet; S3, cutting the detection piece into an irregular shape; S4, weighing the weight of the cut detection sheet, measuring the area of the cut detection sheet by using a to-be-detected planimeter, and calculating the experimental density of the cut detection sheet; and S5, comparing the experimental density with the accurate density. If the experimental density is closer to the accurate density, the precision of the quadrature instrument is higher; and if the difference between the experimental density and the accurate density is larger, the precision of the quadrature instrument is lower. The method has the advantages of being easy to operate, low in detection condition and reliable in result.

Description

technical field [0001] The present application relates to the field of road testing equipment calibration, in particular to a planimeter testing method. Background technique [0002] At present, planimeters are widely used in the surveying and mapping of drawings in highway inspections, and the area of ​​irregular patterns can be obtained by using the planimeter to move a circle along the edge of the irregular figure in the drawing. However, after long-term use, the planimeter is prone to errors, so the planimeter will be checked regularly to ensure that the planimeter maintains good measurement accuracy. [0003] At present, when users do the planimeter detection, they usually use the planimeter to detect regular-shaped pictures, use the calculation formula of the regular shape to calculate the area, and check the readings of the planimeter to judge the accuracy of the planimetry. The inventor It is believed that using the regular shape to check the planimeter cannot accur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/28
CPCG01B21/28Y02P90/30
Inventor 王舜万峰
Owner 上海市市政公路工程检测有限公司
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