The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 1987
Filed:
Dec. 22, 1986
Thomas R Wroblewski, Sterling Heights, MI (US);
Frederick O Miesterfeld, Troy, MI (US);
Chrysler Motors Corporation, Highland Park, MI (US);
Abstract
Continuous status monitoring of a plurality of switches and smart sensors associated with the switches, wherein each sensor is connected to a separate single point on a single-wire bus is affected by a smart sensor multiplex arrangement. The multiplex arrangement employs a microcomputer and a driver and receiver circuit for developing a particular pulse train waveform, which is placed on the bus to provide power and control voltage signals to the plurality of smart sensors. The smart sensors contain circuits that respond to the waveform in a manner that causes each smart sensor to send current signals back over the single wire bus to the driver and receiver circuit and the microcomputer during designated repetitive and sequential time slots. The driver and receiver circuit receives, interprets and converts the current signals into voltage signals used by the microcomputer for establishing a history of the status of the bus, the sensors and the switches. The microcomputer supplies continuous and updated information to a display system indicative of the status of each sensor and its associated switch.