Patent ID: 11933751
Assignee: ROBERT BOSCH GMBH
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 6:
7. A nonvolatile memory on which is stored a computer program for evaluating a functionality of a ceramic sensor for detecting soot, the sensor including two measurement electrodes exposable to an exhaust and spaced apart from one another, and an electrical resistance heating element, the computer program, when executed by a computer, causing the computer to perform the following steps:
activating the resistance heating element to heat up the sensor and to burn soot off the two measurement electrodes;
after the activating step, deactivating the resistance heating element;
after the deactivating step, waiting for a first predetermined time period and/or waiting until a signal that is received from the sensor represents that a sensor temperature reaches a first predefined value;
after the waiting step, measuring a first variable representing an electrical resistance between the measurement electrodes; and
after the measuring step, evaluating the functionality of the sensor based on the first variable representing the electrical resistance between the measurement electrodes,
wherein before the resistance heating element is deactivated, the sensor is heated further with the resistance heating element to a predefined overtemperature that is at least 10 K higher than a first predefined temperature.