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DS-2 digital fluxset D/I instrument |
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Hegymegi, L. (1), Szöllősy, J. (2), Merényi, L. (1), Domján, Á. (1), Hegymegi, Cs. (1) |
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(1) MinGeo Ltd, Budapest, Hungary (2) individual subcontractor |
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Using experiences of DS-1 digital declination/inclination instrument, a new instrument was designed and built. The mechanical part of this instrument is the same as at DS-1. Optical angle measuring system was replaced to a similar digital one for horizontal and vertical angles but a new graduated circle was produced on a thin silicon disc. The stability and precision of this angle reading system is higher than the previous one. In DS-2 the fluxset magnetometer electronics transmits magnetometer output value together with horizontal and vertical angle data to a tablet PC through Bluetooth connection. Measurement data are stored in the tablet together with time label. The built-in GPS receiver of the tablet assures the precision of time stamp. Scalar magnetometer’s serial data output can be connected directly to the USB port of the tablet or alternatively transmitted via Bluetooth using a small electronic unit powered by the scalar magnetometer. The tablet is used as data display and data recording. Recording is carried out when a push button pressed on a remote controller. Same commander is used to delete last recorded data if necessary. After the measurement session data can be downloaded to a memory card or to the processing PC using Wi-Fi connection. Data display gives some additional useful information for the operator as the following measurement position of the telescope or charging status of the batteries etc. All instrumentation is running from battery at least for six hours and charging is possible using 12 V DC or 230 V (115 V) AC. In this paper the new instrument and some measurement experiences are presented and discussed. |
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oral |