Electronic control device having control and monitoring CPUS
AssigneeDenso Corporation
InventorHidemasa Miyano
Life of this patent
Estimating the term…
Abstract
The engine ECU includes a control CPU and a monitoring CPU. The control CPU 11 has a vehicular engine control function and an electronic throttle control function. The monitoring CPU is connected to the control CPU in an intercommunicative manner. The monitoring CPU communicates with the control CPU to receive data at least on the throttle control from the control CPU. The monitoring CPU determines whether the data from the control CPU is properly received. If the date is not properly received, the monitoring CPU resets the control CPU.
Claims15
A control CPU monitoring method for an electronic control device having a control CPU and a monitoring CPU that is connected with the control CPU in an intercommunicative manner, the method comprising steps of:
- transmitting control operation data from the control CPU to the monitoring CPU in a predetermined cycle;
- determining a data receiving condition of the monitoring CPU;
- and
- resetting the control CPU by the monitoring CPU when the data receiving condition is determined faulty.
An electronic control device comprising:
- a control CPU;
- and
- a monitoring CPU for monitoring control operations of the control CPU,
- wherein the monitoring CPU is connected with the control CPU in an intercommunicative manner to receive data on the control operations of the control CPU;
- wherein a first reset signal is outputted from the monitoring CPU to the control CPU, and
- wherein a second reset signal is outputted from the control CPU to the monitoring CPU.
Dependencies are inferred from the claim text.