Wireless seismometer for venus
Wireless Sensors and Sensor Networks(2014)
摘要
Measuring the seismic activity of Venus is critical to understanding its composition and interior dynamics. Because Venus has an average surface temperature of 462°C and the challenge of providing cooling to multiple seismometers, a high temperature, wireless sensor using a wide bandgap semiconductor is an attractive option. This paper presents progress towards a seismometer sensor with wireless capabilities for Venus applications. A variation in inductance of a coil caused by a 1 cm movement of a ferrite probe held in the coil and attached to a balanced leaf-spring seismometer causes a variation of 80 MHz in the transmitted signal from the oscillator/sensor system at 420°C, which correlates to a 10 kHz/mm sensitivity when the ferrite probe is located at the optimum location in the coil.
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关键词
venus,astronomical instruments,planetary composition,planetary interiors,seismometers,wide band gap semiconductors,wireless sensor networks,venus composition,venus wireless seismometer,balanced leaf-spring seismometer,coil inductance variation,ferrite probe,interior dynamics,oscillator/sensor system,seismic activity measurement,surface temperature,temperature 462 degc,wide bandgap semiconductor,wireless sensor,seismometer,high temperature circuits,oscillator,oscillators,wireless communication,seismographs,temperature measurement
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