Vehicle control device and electronic control system
Even in a case where an operation abnormality occurs in the arithmetic processing unit of the control device, control is safely shifted to the degeneration control microcomputer, and a vehicle control device capable of improving safety is realized. There are provided an outside world recognition microcomputer 10 b , a control microcomputer 11 b that outputs a control command to the actuator control device, and a degeneration control microcomputer 12 b to which control is shifted in a case where an abnormality occurs in the control microcomputer 11 b . The outside world recognition microcomputer 10 b calculates a collision potential based on information from the outside world, and determines whether to reset the control microcomputer 11 b when an abnormality occurs in the control microcomputer 11 b or to shift control to the degeneration control microcomputer 12 b.
1. A vehicle control device, comprising:
a control command generation unit that generates a control command for a drive device of the vehicle;
an outside world recognition unit that recognizes external information of the vehicle; and
a monitoring circuit that includes a monitoring unit to monitor an operation of the control command generation unit and a reset generation unit to reset the control command generation unit when the monitoring unit detects an abnormality of the control command generation unit,
wherein the monitoring unit includes
a first monitoring unit that detects an abnormality in the control command generation unit at a first abnormality detection time after an abnormality has occurred in the control command generation unit, and
a second monitoring unit that detects an abnormality in the control command generation unit at a second abnormality detection time longer than the first abnormality detection time after an abnormality has occurred in the control command generation unit, and
wherein the monitoring circuit determines whether the control command generation unit is reset by the reset generation unit according to an abnormality detection of the first monitoring unit, or the control command generation unit is reset by the reset generation unit according to an abnormality detection of the second monitoring unit based on outside world information of the vehicle recognized by the outside world recognition unit.
2. The vehicle control device according to claim 1 ,
wherein the drive device for the vehicle further includes a degeneration control unit that generates a control command degenerated from the control command generated by the control command generation unit,
wherein the second abnormality detection time is set to be equal to or more than a time when a control transition of the degeneration control unit ends after an abnormality has occurred in the control command generation unit, and
wherein, in a case where it is determined that the degeneration control unit needs to generate the degeneration control command based on outside world information of the vehicle recognized by the outside world recognition unit, the monitoring circuit resets the control command generation unit by the reset generation unit according to an abnormality detection of the second monitoring unit.
3. The vehicle control device according to claim 2 ,
wherein the degeneration control unit includes a monitoring circuit.
4. The vehicle control device according to claim 2 ,
wherein the outside world recognition unit determines whether a possibility of the vehicle colliding with an object around the vehicle is high or low, and in a case where the possibility of collision is low, the monitoring circuit resets the control command generation unit by the reset generation unit based on an abnormality detection result of the first monitoring unit, and a control command generation operation of the control command generation unit is returned after resetting.
5. The vehicle control device according to claim 2 ,
wherein the outside world recognition unit determines whether the vehicle has a high or low possibility of collision with an object around the vehicle, and in a case where it is determined that a possibility of collision is high, and the monitoring circuit notifies the degeneration control unit of the control command generation unit abnormality based on an abnormality detection result of the first monitoring unit, and resets the control command generation unit by a reset generation unit based on an abnormality detection result of the second monitoring unit.
6. The vehicle control device according to claim 1 ,
wherein determination reference 1 set by the number of times of abnormality detection and determination reference 2 whose number of times of abnormality detection is larger than determination reference 1 are set, and the first abnormality detection time is made to correspond to determination reference 1 and the second abnormality detection time is made to correspond to determination reference 2 , and a time difference between the first abnormality detection time and the second abnormality detection time is provided.
7. The vehicle control device according to claim 1 ,
wherein the first monitoring unit and the second monitoring unit are different from each other in a determination reference of an abnormality detection.
8. The vehicle control device according to claim 7 ,
wherein the determination reference of the abnormality detection in the second monitoring unit is for a severe abnormality as compared with the determination reference for abnormality detection in the first monitoring unit.
9. The vehicle control device according to claim 5 ,
wherein the outside world recognition unit predicts and generates a driving trajectory of the vehicle, and determines a possibility of collision on the generated driving trajectory of the vehicle.
10. The vehicle control device according to claim 5 ,
wherein the outside world recognition unit determines a possibility of collision according to a distance from the vehicle to a surrounding object.
11. The vehicle control device according to claim 5 ,
wherein the outside world recognition unit determines a possibility of collision according to a shape of a driving road on which the vehicle runs.
12. The vehicle control device according to claim 5 ,
wherein the outside world recognition unit determines a possibility of collision according to the amount of outside world information of the vehicle.