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Method of operating a control system for the control of motor vehicle components

  • US 6,006,143 A
  • Filed: 05/24/1996
  • Issued: 12/21/1999
  • Est. Priority Date: 08/18/1995
  • Status: Expired due to Fees
First Claim
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1. A method of operating a control system for a multiplicity of electrically controllable motor-vehicle components selected from motor-vehicle door locks, a trunk lock, a hood lock, a glove compartment lock, a fuel-tank lock, a window lifter, an external mirror, and an antitheft warning unit, said method comprising the steps of:

  • (a) connecting a central processor of said control system and at least one respective satellite processor for each of said electrically controllable motor-vehicle components all in parallel with a multiplex single-conductor bus;

    (b) transmitting digital pulse-width-modulated master signals constituting a first class of signals and pulse-width-modulated control signals constituting a second class of signals bidirectionally over said bus between said central processor and said satellite processors;

    (c) operating both said central processor and said satellite processors selectively as master with respective characteristic addresses with the signals transmitted bidirectionally over said bus; and

    (d) upon receipt of one of said signals by one of said processors generating at said one of said processors a master or control signal with a selected priority value set by assignment of a respective bus access time thereto and sending over said bus an error-control signal corresponding to the signal with the shortest bus access time and the highest priority, and sending over said bus master or control signals with stepwise longer bus access times and lesser priorities.

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