APPARATUS FOR MEASURING THE HEIGHT OF SURVEYING INSTRUMENT COMPRISING TRIPOD,TRIBRACH, TRIBRACH ADAPTER AND GPS ANTENNA

摘要

The present invention relates to an apparatus for measuring an instrument height with a tripod, a tribrach, a tribrach adapter and a GPS antenna, comprising: a laser range finder (500) for obtaining a height value of an instrument by irradiating a laser beam; And a controller (600) for generating a control signal for correcting an error value due to an unintentional hand movement when acquiring a height value of the instrument, wherein the laser distance meter (500) has a spiral groove A connecting portion 510 connecting the tripod 100 and the tribrach 200 by being coupled to the receiving portion of the tribrach 200 by the helical groove; An interface unit (521) connected to the instrument and the controller; A sensor unit 522 including a temperature sensor for sensing the temperature around the instrument; (Lo-L) represents the length change value of the instrument, and L represents the length change value of the instrument, according to the temperature value measured from the sensor 522, The length change value of the instrument is corrected using the measured temperature, 'a' represents the linear expansion coefficient, 't' represents the temperature around the instrument, and 'to' represents the standard temperature (15 ° C.) An error correction unit 523; A communication unit 524 that receives a measurement command signal for measuring the height of the instrument from the controller 600 and receives a control signal for controlling the irradiation position and the irradiation direction of the laser distance measurer 500; A memory unit (526) for storing the measured height value and the length change value of the instrument; And a display unit 527 for displaying the height value and the length change value on a liquid crystal screen. The GPS antenna 400 calculates a signal delay value of a frequency signal transmitted from a GPS satellite using the following equation: DELTA L (S) denotes a refractive function at a position s along a path L, and n (s) denotes a refractive function at a position s. And G is a geometric linear path, and the signal delay value is transmitted to the error corrector 523, and the controller 600 determines the height of the instrument from the laser range finder 500 A receiver 620 for receiving a value; A determination unit (630) for determining whether to control the irradiation position and the irradiation direction of the laser range finder (500) using the height value of the received instrument; And an adjusting unit 640 for controlling the irradiating position and the irradiating direction of the laser range finder 500 according to the determination result of the determining unit 630.