US Patent 7024296 Control system and method for an equipment service vehicle

A control system for a vehicle comprises a power source, a power transmission link, a plurality of input and output devices, a plurality of microprocessor-based interface modules, and a communication network that interconnects the interface modules. The interface modules are also each coupled to respective local subsets of the input and output devices. Each of the interface modules collects input status information from the respective local subset of the input devices and transmits the input status information over the communication network to the remaining interface modules.