A method of detecting presence and location uses sensor data received from a plurality of thermopiles, each thermopile having a different field of view. In response to detecting a change in the sensor data, stored background values for each field of view are accessed and then the location of a body (e.g. a human or animal)is determined based on differences between the sensor data and sensor values predicted using a forward model and the stored background values for each field of view. Having determined the location, the stored background values are updated based on differences between the sensor data and the predicted sensor values for a body at the determined location.

A method of detecting presence and location uses sensor data received from a plurality of thermopiles, each thermopile having a different field of view. In response to detecting a change in the sensor data, stored background values for each field of view are accessed and then the location of a body (e.g. a human or animal)is determined based on differences between the sensor data and sensor values predicted using a forward model and the stored background values for each field of view. Having determined the location, the stored background values are updated based on differences between the sensor data and the predicted sensor values for a body at the determined location.

A system for determining occupancy in an environment is provided. The system includes plurality of sensor bundles, with each bundle including a presence sensor and a motion sensor. The system further includes a controller in communication with each sensor bundle. The controller is configured to designate one of the sensor bundles as presence triggered if persons are present within a field of view of the presence sensor. The controller is further configured to designate one of the sensor bundles as motion triggered if persons are moving within a field of view of the motion sensor. The controller is further configured to determine a triggered bundle count of the sensor bundles which are both presence triggered and motion triggered. The controller is further configured to determine an occupancy count for the environment based upon the triggered bundle count.

A system for determining occupancy in an environment is provided. The system includes plurality of sensor bundles, with each bundle including a presence sensor and a motion sensor. The system further includes a controller in communication with each sensor bundle. The controller is configured to designate one of the sensor bundles as presence triggered if persons are present within a field of view of the presence sensor. The controller is further configured to designate one of the sensor bundles as motion triggered if persons are moving within a field of view of the motion sensor. The controller is further configured to determine a triggered bundle count of the sensor bundles which are both presence triggered and motion triggered. The controller is further configured to determine an occupancy count for the environment based upon the triggered bundle count.

A black silicon carbide ceramic based thermoelectric photodetector, and a thermoelectric optical power meter/thermoelectric optical energy meter using same. The black silicon carbide ceramic based thermoelectric photodetector comprises a thermal conduction plate (21) made of a black silicon carbide ceramic, wherein the surface of one side of the thermal conduction plate (21) is an optical absorption surface (211); and a thermopile (22) or a series connection conductive metal layer (302) is arranged on the surface of either side of the thermal conduction plate (21) to constitute the thermoelectric photodetector. In the thermoelectric photodetector, the black silicon carbide ceramic is used as both the thermal conduction plate (21) and a light absorber, and is directly combined with the thermopile (22) or the series connection conductive metal layer (302) to constitute the thermoelectric photodetector, thereby simplifying the structure of the thermoelectric photodetector.

A black silicon carbide ceramic based thermoelectric photodetector, and a thermoelectric optical power meter/thermoelectric optical energy meter using same. The black silicon carbide ceramic based thermoelectric photodetector comprises a thermal conduction plate (21) made of a black silicon carbide ceramic, wherein the surface of one side of the thermal conduction plate (21) is an optical absorption surface (211); and a thermopile (22) or a series connection conductive metal layer (302) is arranged on the surface of either side of the thermal conduction plate (21) to constitute the thermoelectric photodetector. In the thermoelectric photodetector, the black silicon carbide ceramic is used as both the thermal conduction plate (21) and a light absorber, and is directly combined with the thermopile (22) or the series connection conductive metal layer (302) to constitute the thermoelectric photodetector, thereby simplifying the structure of the thermoelectric photodetector.

A thermoelectric conversion material includes a base material that is a semiconductor having Si and Ge as constituent elements, a first additive element that is different from the constituent elements, has a vacant orbital in a d or f orbital located inside an outermost shell thereof, and forms a first additional level in a forbidden band of the base material, and oxygen. The oxygen content ratio is 6 at % or less.

A semiconductor package device, a wearable device, and a temperature detection method are provided. The semiconductor package includes a substrate, an optical module, and a temperature module. The optical module is disposed on the substrate. The temperature module is disposed on the substrate and adjacent to the optical module. The temperature module comprises a semiconductor element and a temperature sensor stacked on the semiconductor element. The optical module is configured to detect a distance between the optical module and an object.

A system and method are provided for performing a test operation of a gas household cooking appliance having an oven cavity and a gas burner within the oven cavity. The system and method include an infrared thermocouple configured to be portably and temporarily positioned within the oven cavity and configured to produce an output signal in response to a change in temperature within the oven cavity to confirm that the gas burner has ignited. A control unit is configured to execute the test operation only upon receipt of the output signal from the infrared thermocouple within a predetermined amount of time following an initiation of a gas flow to the gas burner.

A system and method are provided for performing a test operation of a gas household cooking appliance having an oven cavity and a gas burner within the oven cavity. The system and method include an infrared thermocouple configured to be portably and temporarily positioned within the oven cavity and configured to produce an output signal in response to a change in temperature within the oven cavity to confirm that the gas burner has ignited. A control unit is configured to execute the test operation only upon receipt of the output signal from the infrared thermocouple within a predetermined amount of time following an initiation of a gas flow to the gas burner.