ENVIRONMENTAL SENSOR SYSTEM AND SIGNAL PROCESSOR

摘要

A sensor system comprises a first sensor, a second sensor, a high pass filter, and a summation unit. The first sensor senses an environmental parameter and outputs a first electronic signal with a response having a first time constant. The second sensor senses the environmental parameter and outputs a second electronic signal with a response having a second time constant greater than the first time constant. The high pass filter has a filter time constant roughly equal to the second time constant and filters the first electronic signal, outputting a filtered first electronic signal in which changes in a level or value of the first electronic signal with transition times that are less than the filter time constant are passed. The summation unit receives the filtered first electronic signal and the second electronic signal and outputs a sum of the filtered first electronic signal and the second electronic signal.

主权项

1. A sensor system comprising:
a first sensor configured to sense an environmental parameter and output a first electronic signal with a response to the environmental parameter, the response having a first time constant; a second sensor configured to sense the environmental parameter and output a second electronic signal with a response to the environmental parameter, the response having a second time constant greater than the first time constant; a high pass filter having a first filter time constant roughly equal to the second time constant, the high pass filter receiving the first electronic signal and outputting a filtered first electronic signal in which changes in a level or value of the first electronic signal with transition times that are less than the first filter time constant are passed, while first electronic signal changes with transition times greater than the first filter time constant are cut off or attenuated; and a summation unit receiving the filtered first electronic signal and the second electronic signal and outputting a third electronic signal which is the sum of the filtered first electronic signal and the second electronic signal.