B - Operations – Transporting – 60 – R
Patent
B - Operations, Transporting
60
R
340/90
B60R 16/02 (2006.01) H04Q 9/14 (2006.01)
Patent
CA 1331646
ABSTRACT OF THE DISCLOSURE Control of a plurality of relay drivers by smart control devices and the continuous status monitoring of a plurality of switches and associated smart sensor wherein each smart control device and each smart sensor is connected at a separate single point on a single-wire bus, are affected by a smart control and sensor device multiplex system. The system employs a microcomputer and a driver and receiver circuit for developing a particular offset square wave pulse train which is placed on the bus to provide power and control voltage signals to the plurality of smart contro? devices and smart sensors. The smart control devices contain circuits that respond to the wave form in a manner that causes each smart control device to drive an associated relay driver after a chosen number of polling cycles. Current signals are sent over the bus back to the driver and receiver indicative of the status of the smart control device. 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 then on to the microcomputer during designated repetitive and sequential time slots. The driverand receiver circuit receives, interprets and converts the current signals from the smart control devices and the smart sensor into voltage signals used by the microcomputer for establishing a history of the status of the bus, the control devices, the sensors and the switches. The microcomputer supplies continuous andupdated information to a display system indicative of the status of each controldevice and each sensor and its associated switch.
551541
Miesterfeld Frederick O. R.
Wroblewski Thomas R.
Chrysler Motors Corporation
Macrae & Co.
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