Digital display horizontal and dip measurer

Abstract

The digital display horizontal and dip measurer includes casing and angle measurer. The angle measurer is capacitive angle measurer, and the casing is connected and fixed to the main grating or subsidiary grating of the capacitive angle measurer. There are also a gravitational vertical device always in vertical state connected and fixed to the subsidiary grating or main grating of the capacitive angle measurer for coaxial rotation inside the casing; and a precise position switch to determine the absolute zero position on the casing. The gravitational vertical device consists of weight, bearing shaft and float with position and shape axially symmetrical about the weight axis. The present invention has simple structure, low cost, precise measurement and stable performance, and may be used in harsh environment.

Description

(1) Technical field: [0001] The invention relates to a measuring instrument for measuring levelness or horizontal inclination, in particular to a digital display level and angle measuring instrument. (two) background technology: [0002] The existing digital horizontal inclinometers all use electronic inclination sensors, and the existing electronic inclination sensors mainly use the resistance of the two arms of the bridge to change with the inclination angle, thereby outputting an analog inclination electrical signal. The analog inclination electrical signal and the rate of change of the inclination angle are not in a linear relationship, resulting in distortion of the angle measurement. In order to compensate for nonlinear signal distortion, a very complex compensation circuit must be designed, such as the Chinese patent with the application number 01249761.4 and the name "Digital Inclination Sensor"; and no matter how accurate the compensation circuit is, this method of ...

AI Technical Summary

Problems solved by technology

[0002] The existing digital horizontal inclinometers all use electronic inclination sensors, and the existing electronic inclination sensors mainly use the resistance of the two arms of the bridge to change with the inclination angle, thereby outputting an analog inclination electrical signal. The analog inclination electrical signal and the rate of change of the inclination angle are not linearly related, resulting in distortion of angle measurement

In order to compensate for nonlinear signal distortion, a very complex compensation circuit must be designed, such as the Chinese patent with the application number 01249761.4 and the name "Digital Inclination Sensor"; and no matter how accurate the compensation circuit is, this method of converting angle measurement into impedance Poor, and then the method of outputting electrical signals through the bridge circuit is greatly affected by the stability of the power supply and temperature changes. In order to reduce the measurement error, it is necessary to use a precision power supply worth several thousand yuan, which greatly increases the cost.

Therefore, the existing level and inclinometers have low measurement accuracy, poor stability, complex structure, high energy consumption and high cost.

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