Abstract:
A method of detecting natural gas releases that includes the step of traversing a target area with a gas-filter correlation radiometer having a field of view oriented towards the target area. The gas-filter correlation radiometer receives reflected radiation in a passband from the target area and produces gas-filter correlation radiometer signals from the received reflected radiation. A surface reflectivity spectral profile of the target area is determined. The presence of methane in the target area is then determined based upon the received reflected radiation and the surface reflectivity spectral profile of the target area.
Abstract:
Vehicle headlight (3) comprising: a lighting unit, a reflector (5), and a headlight glass (9); a device (11) for determining road conditions, wherein the device is provided in the interior of the vehicle headlight (3) behind the headlight glass (9) and comprises: an infrared transmission unit (13) which is configured for emitting light at predetermined wavelengths through the headlight glass (9) onto a road surface; a detection unit (17) which is configured for detecting the light emitted by the infrared transmission unit (13) and reflected by the road surface through the headlight glass (9); a processing unit which is configured for determining surface parameters of the road surface on the basis of the light detected by the detection unit (17).
Abstract:
An exhaust gas analyzing apparatus of a vehicle mounted type equipped with an analyzer that is configured to analyze components contained in exhaust gas, comprising: a sampling line that is an exhaust gas flow path extending from an exhaust gas introduction terminal that is configured to introduce the exhaust gas from the outside to the analyzer; a pressure reduction source that is configured to reduce a pressure in the sampling line to a predetermined pressure; and a temperature-regulating mechanism that is configured to regulate a temperature of the exhaust gas flowing in the sampling line to be at least a first temperature, wherein the first temperature is set to be a temperature equal to or higher than an evaporation temperature of moisture at the reduced predetermined pressure and lower than an evaporation temperature of moisture at one atmospheric pressure.
Abstract:
The description relates to a method and a device (9) for outputting a signal when there is a hazardous underlying surface (1) under a vehicle (60). The device (9) comprises an optical surface sensor (2) for determining at least one parameter of the underlying surface (1), a stationary-state-determining device (7) for determining whether the vehicle (60) is stationary or is to be brought to a standstill, and an output device (8) which outputs a signal if the underlying surface (1) has been determined as being hazardous on the basis of the at least one parameter and the vehicle (60) is stationary or is to be brought to a standstill.