Failure detection and communication system for electrically driven vehicles
US5726541A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1995 |
| Grant date | Mar 10, 1998 |
| Priority date | — |
| Expiry date | Mar 17, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/16
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
To effect failure detection and communication between the modules in a modular control system for an electrically driven vehicle in which modules are interconnected by a serial data bus, one line of the serial bus may be biased high or low by modules of the system when a fault is detected. This is detected by a kill system of the modules to which disable safety related functions of each module are applicable. Modules other than the remote control module can include wake up circuitry which supplies power to the modules at start up, or deactivated modules, when the data line is biased high. The modules preferably operate as finite state machines with each module storing in its memory network variables required for the operation of that module. The network variables include the state of other modules, external demand signals, and measured variables of the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.