Resources Contact Us Home
Gas sensor

Image Number 3 for United States Patent #8117894.

A sensor system issues measurement commands at a predetermined regular rate. If a measurement indicates that a gas of interest is present, then the sensor system is signaled to wake-up thereby pulsing a heater for the sensor element that improves the accuracy of measurements. Measurements of humidity, temperature and gas concentration are made. If the gas of interest is detected then the data is used to indicate a compensated gas measurement. The gas level is classified as to its hazard and an adaptive detection algorithm is used to set an activity mode. If the gas of interest is not detected, the adaptive detection algorithm is used to set a sleep mode that saves power. Measurement rates are kept constant while heater power is controlled to reduce power consumption. Measurement rates are changed to increase concentration sensitivity.

  Recently Added Patents
Technique for effectively providing program material in a cable television system
Method and system for quantifying viewer awareness of advertising images in a video source
High productivity single pass scanning system
Systems and methods for online search recirculation and query categorization
Mixed reactant flow-by fuel cell
Hand sign
Post-processing device and image forming system
  Randomly Featured Patents
Incubating orbital shaker
Windshield wiper device
Welding helmet
Tool rack having slidable connectors
Laser scanning unit
Server device operating in response to received request
Vertical cavity electron beam pumped semiconductor lasers and methods
Device for multiple analyte detection
Diaphragm pump with noise intercepting insert