The level gauge is an instrument that measures the height difference between two points on the ground by establishing a horizontal line of sight. The principle of measurement is to use the horizontal line of sight provided by the leveling instrument, directly measure the height difference between the two points on the ground by means of the leveling ruler with division, and then calculate the height of the unknown point based on the known point height and the measured height difference. Since the location of the measurement is not guaranteed to be in a horizontal state during the field measurement, it is necessary to level the level by the level before the measurement to ensure that the height difference measurement in the horizontal direction is performed. However, in the horizontal adjustment process, the operation process is cumbersome, so the tilt sensor can be used for level adjustment.
When the tilt sensor is measuring, the internal gravity sensing element is tilted accordingly, and the relationship between the magnitude of the force in the sense axis direction and the gravity is related to the tilt angle. Therefore, by measuring the force in the direction of the sensing axis, the angle of inclination can be obtained. In this application, the tilt sensor can be mounted on a component that can be adjusted horizontally with the lens barrel, so that no matter what terrain, once the instrument is set up, we only need to adjust the horizontal angle of the observation as the tilt sensor When the angle value is 0 degrees, it indicates that the sensing angle is already in the horizontal direction. The use of the tilt sensor greatly simplifies the horizontal calibration operation, greatly reduces the factors affecting the adjustment, and also reduces the skill requirements of the user, making the instrument more popular.
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