Operating Method for a Gas Sensor and Gas Sensor
AssigneeRobert Bosch GmbH
InventorsMaximilian Fleischer, Karsten Hiltawsky, Erhard Magori, Roland Pohle, Oliver von Sicard
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Abstract
The disclosure relates to an operating method for a gas sensor, in particular a gas sensor for detecting asthma. According to said method, nitrogen monoxide or nitrogen dioxide is detected in a measuring phase and the gas sensor is heated by a heating device in a desorption phase in order to accelerate desorption. The heating process is continued until the temporal alteration of the measuring signal of the gas sensor falls below a threshold value.
Claims10
An operating method for a gas sensor for the determination of nitrogen monoxide or nitrogen dioxide concentration, comprising:
- operating the gas sensor in a measurement phase, during which a first gas to be analyzed is delivered to the gas sensor;
- operating the gas sensor in a regeneration phase, during which a second gas with a lower concentration of nitrogen monoxide or nitrogen dioxide is fed to the gas sensor and the gas sensor is heated to a regeneration temperature which is greater than a measurement temperature by a heater;
- and
- alternating operation of the gas sensor between the measurement phase and the regeneration phase.
A gas sensor for determining a concentration of nitrogen monoxide or nitrogen dioxide, comprising:
- a heater;
- wherein the gas sensor is configured to be alternated between a measurement phase, in which a first gas to be analyzed is delivered to the gas sensor, and a regeneration phase, in which a second gas with a lower concentration of nitrogen monoxide or nitrogen dioxide is fed to the gas sensor, and wherein the heater is configured to heat the gas sensor to a regeneration temperature, which is greater than a measurement temperature, during the regeneration phase.
Dependencies are inferred from the claim text.