Environmental conditional measuring device and environmental conditional measurement manner null for artificial earth satellite on-board equipment

摘要

PROBLEM TO BE SOLVED: To provide an environmental-condition measuring apparatus, for an apparatus carried on an artificial satellite, by which, when a change in an environmental condition inside a sealed-up container carried on the artificial satellite is measured, a temperature drift, the degradation of a sensor due to a radiation and a change in a measured value due to a secular degradation are cancelled and by which a correct measured value can be obtained. ;SOLUTION: In a system, the inside-container environmental condition of a sealed-up container 1 which is carried on an artificial satellite 30 is monitored. In the system, a first sensor 4 which measures the inside-container environmental condition of the sealed-up container 1 and a second sensor 5 which measures the outside-container environmental condition of the sealed-up container 1 are installed at a part of the sealed-up container 1. In addition, a computing means 26 is installed so that the difference between individual output values to be output from the first and second sensors 4, 5 simultaneously is computed.;COPYRIGHT: (C)1998,JPO