System for control of actuators and switches by a remotely located microcontroller using a two buss system
US5486724A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 1992 |
| Grant date | Jan 23, 1996 |
| Priority date | — |
| Expiry date | Jan 15, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2016/0322
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A two buss system to accomplish; 1) communication from contact pairs located at vehicle access points such as a vehicle door or trunk to a central controller; and 2) transmitting current for energization of actuators to implement respective commands such as normal lock or super lock. The contact pairs function to provide entry ports for commands as well as providing status signals of various points of interest. The contact pairs are connected to individual output ports of a counter. Each contact pair is sequentially pulsed by a single pulse of a pulse train provided by the central controller. If a contact pair is engaged or closed when pulsed, the pulse will cause a coincident buss loading to occur. The central controller monitors buss loading and is appraised of the contact status by the coincidence (or lack thereof) of a pulse and a respectively loaded buss. Upon determination of the contact statuses, the central controller accesses a look-up table and then implements the respective commands by energizing one of several relays that define path for flow of current to respective actuators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.