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
Mobile terminal device capable of more effectively utilizing operation portions, conductive portion, operation detecting unit, power supply unit, and signal processing unit
Secure data exchange between data processing systems
Computing device with improved user interface for applications
Preparation of isomerically pure substituted cyclohexanols
Pixel structure of organic light emitting device
Differential ring oscillator and method for calibrating the differential ring oscillator
Method and apparatus for using virtual machine technology for managing parallel communicating applications
  Randomly Featured Patents
Production of anti-self antibodies from antibody segment repertoires and displayed on phage
Remote ion source plasma electron gun
Washer nozzle
Method and system for creating a concept-object database
Clip for attaching a support member onto a steel fencepost
Method and apparatus for suppressing optical surge in optical burst switching network
Preparation of a mixture of an alkyl 3-chloroanthranilate and an alkyl 6-chloroanthranilate
Cleaning tool
Compositions and methods for treatment of attention deficit disorder and attention deficit/hyperactivity disorder with methylphenidate
Subscriber identity module (SIM) application toolkit test method and system