Gas concentration detection device
AssigneeDenso Corporation
InventorMitsuru Aoki
Life of this patent
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Abstract
A gas concentration detection device includes: a gas concentration sensor having a gas sensor element that outputs an electric signal according to a gas concentration and a heater that heats the gas sensor element; a heater controller controlling energization and de-energization of the heater; a sensor controller having an ADC AD-converting the electric signal from an analog signal to a digital signal in synchronization with a sampling clock (fs) and detecting the gas concentration based on an output signal of the AD converter; and a timing adjuster shifting a switching timing of energization control from a conversion timing at which the AD converter performs the AD conversion.
Claims14
A gas concentration detection device comprising:
- a gas concentration sensor having a gas sensor element that outputs an electric signal according to a gas concentration and a heater that heats the gas sensor element;
- a heater controller controlling energization and de-energization of the heater;
- a sensor controller having an AD converter AD-converting the electric signal from an analog signal to a digital signal in synchronization with a sampling clock and detecting the gas concentration based on an output signal of the AD converter;
- and
- a timing adjuster shifting a switching timing of energization control from a conversion timing at which the AD converter performs the AD conversion.
A gas concentration detection device comprising:
- a gas concentration sensor having a gas sensor element that outputs an electric signal according to a gas concentration and a heater that heats the gas sensor element;
- a heater controller controlling energization and de-energization of the heater;
- a sensor controller having an AD converter AD-converting the electric signal from an analog signal to a digital signal in synchronization with a sampling clock and detecting the gas concentration based on an output signal of the AD converter;
- a timing adjuster shifting a switching timing of energization control from a conversion timing at which the AD converter performs the AD conversion;
- a first processor located in the heater controller;
- a first non-transitory computer-readable storage medium located in the heater controller;
- a second processor located in the sensor controller;
- and
- a second non-transitory computer-readable storage medium located in the sensor controller.
Dependencies are inferred from the claim text.