TH40306B - Methods and devices for detecting faults of sensor operation - Google Patents

Abstract

DC60 (03/08/44) Sensor for converting a physical quantity into an electrical signal and sending it out, the output is driven by a driver circuit, which is driven by a driving signal sent by the micro. Single chip computer A single chip microcomputer determines that there is a sensor malfunction when the sensor output signal. Outside the specified output range. Additionally, when stopping the drive If the sensor output signal does not match a specific value, then a single chip microcomputer will consider a sensor malfunction. From this invention When there is a problem of sensor operation that allows the sensor output signal. Within that one output range Such problems can then be detected. A sensor for converting a physical quantity into an electrical signal and sending it out, the output is driven by a driver circuit, which is driven by a drive signal sent by the micro. Single chip computer A single chip microcomputer determines that there is a sensor malfunction when the sensor output signal. Outside the specified output range. Additionally, when stopping the drive If the sensor output signal does not match a specific value, then a single chip microcomputer will consider a sensor malfunction. From this invention When there is a problem of sensor operation that allows the sensor output signal. Within that one output range Such problems can then be detected.

Claims (9)

Disclaimers (all) that will not appear on the advertisement page: 1. Fault detection methods for detecting the function of sensors. In a device for output control using a single chip microcomputer. To receive electrical signals from sensors to convert physical quantities into electrical signals It consists of the procedure of: Driving a driver circuit for driving the sensor by a driving signal sent by a microcomputer Such a single chip; The single chip microcomputer receives an electrical signal that depends on the sensor. During normal operation by driving a driving signal, and receiving an electrical signal dependent on that sensor at a predetermined specific value during stopping of the driving signal; And detecting faults in the sensor operation when the electrical signal of a local value It was not obtained during the stop of the drive signal, thus detecting the Error in the operation of the sensor. Although the output of the sensor is constant within Sensor output range 2. Fault detection methods for verifying sensor functionality. Clause 1, where such a single chip microcomputer will have a pre-stored program and perform a fault detection of its operation Sensor 3. Fault probing method for checking the operation of sensors in the device. For output control using a single chip microcomputer, consisting of a procedure of: receiving electrical signals from the sensor. To convert physical quantities into electrical signals; Driving a driver circuit for driving the sensors. By the driver signal sent from the microcomputer Such a single chip; Where a single chip microcomputer receives an electrical signal based on a sensor during Normal operation by transmitting a drive signal And will receive an electrical signal with the characteristics expected from the sensor by varying the frequency of the drive signal; And detecting faults of sensor operation when no electrical signal is received With the specific characteristics expected During the frequency conversion of the drive signal, therefore, the sensor operation errors can be detected even if the sensor output is constant. Within the output range of that sensor 4. Fault detection methods for detecting the faults of the work. Sensor according to claim 3, where such a single chip microcomputer There is a pre-stored program and an error checking of the sensor operation is performed. 5. Fault monitoring device for verifying the operation of sensors. In an output control device, consisting of: sensors for converting physical quantities into electrical signals; Single chip microcomputer for controlling the output when the electrical signal is received; And a driver circuit for driving the sensors to work Which is controlled by a control signal sent From a single chip microcomputer, where the single chip microcomputer stops driving the driver circuit. And will check that the sensor Does it send an output with a specific value? It is the basis for checking the errors of the Sensor work Therefore, errors in the sensor operation can be detected. Even if the sensor output is constant within the sensor output range 6. Fault monitoring device for checking the sensor operation of claim 5, where the drive circuit is assembled. Buffer circuit for waveform tuning. Signal from a single chip microcomputer 7. Fault monitoring device for checking the sensor operation of claim 5, which is also equipped with: an interface circuit for amplifying the signal from the sensor and then transmitting the signal. Such as a single chip microcomputer 8.Fault monitoring device for checking the operation of sensors. In output control devices, consisting of: sensors for converting physical quantities into electrical signals; Single chip microcomputer for controlling the output by receiving an electrical signal; And a driver circuit for driving the sensor Which will be controlled by a control signal sent from A single-chip microcomputer, where a single-chip microcomputer changes the frequency of the drive signal to the driver circuit and detects that the drive signal is delivered. The sensor output is an electrical signal that is characterized by As expected or not Hence, it is a check for the fault of the sensor operation even if the sensor output is constant within the sensor output range. 9. Fault monitoring device for checking the operation of sensors in accordance with claim 8, where the drive circuit is assembled. Buffer circuit for modifying the waveform of The signal from the single chip microcomputer 1 0. Fault monitoring device for checking the operation of the sensor in accordance with claim 8, which is also equipped with: an interface circuit for amplifying the signal from the sensor. And then send Such signals to the microcomputer