Leveling rod by utilizing color-changing light emitting diode (LED) to supplement light source

Abstract

The invention is applicable to the level measurement of the geomatics field. A leveling rod by utilizing a color-changing light emitting diode (LED) to supplement a light source consists of a body (1), color-changing LEDs (2), an upper knob (3), a middle knob (4), a lower knob (5), a power supply switch (6) and the like. The LEDs are uniformly distributed according to the size of the body and are grouped at intervals into a left column and a right column and an upper group, an intermediate group and a lower group to be uniformly controlled, and the default color of each color-changing LED is white. When the light is insufficient, a power supply is switched on, all the LEDs emit white light, and the brightness of the LEDs can be adjusted according to the requirement; and when a measured interval is determined in one of the upper, the intermediate and the lower ranges, the light color in the range can be changed to other colors, i.e. frequently red, yellow and green. Due to the adoption of the leveling rod, the influence of external conditions on the measurement work is reduced, the measurement efficiency under unfavorable environment is improved, characteristics of high brightness, fastness in starting, uniformity in light and the like can be realized, and different light colors can be used for different measurement ranges.

Description

technical field [0001] The invention relates to a surveying and mapping instrument in the field of surveying and mapping, in particular to a level gauge using color-changing light-emitting diodes to supplement light sources. Background technique [0002] Elevation is one of the elements to determine the location of ground points, and it plays a very important role in the design, construction and management stages of engineering construction. Leveling is the most commonly used method of height measurement. For example, geometric leveling is still the only means of high-precision height control measurement. The principle of leveling is: use the horizontal line of sight provided by the level to aim and read the leveling rod vertically erected at two points on the ground, and the height difference between the two points has been measured, so as to obtain the elevation of the point to be measured. Light-emitting diode (LED) is a semiconductor element that can emit light. It has ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a leveling rod using color-changing light-emitting diodes to supplement the light source, and to solve the problem of insufficient light in various environments of leveling measurement

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