WIRE BREAK DETECTION IN REDUNDANT COMMUNICATIONS
2 Assignments
0 Petitions
Accused Products
Abstract
A system and method for low-cost, fault tolerant, EMI robust data communications, particularly for an EV environment.
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Citations
31 Claims
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1-14. -14. (canceled)
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15. A battery electronics system comprising:
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a host circuitry serving as a host in the battery electronics system; multiple client circuitries, each serving as a client in the battery electronics system and assigned to a respective one of multiple battery modules; one or more conductors forming a daisy-chain loop that begins at the host circuitry, extends to each of the client circuitries in sequence, and ends at the host circuitry, wherein the host is configured to send, through the daisy-chain loop, a packet having a start-of-packet identifier defined by a period of signal inactivity; and in each of the multiple client circuitries; a receiver configured to receive, through the daisy-chain loop, a transmission having an initial period of signal inactivity and a subsequent period of signal activity; and a comparator configured to compare the initial period of signal inactivity to the subsequent period of signal activity. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method comprising:
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sending, from a host in a battery electronics system, a packet having a start-of-packet identifier defined by a period of signal inactivity, the battery electronics system including one or more conductors forming a daisy-chain loop that begins at the host, extends to each of multiple clients in sequence, and ends at the host; receiving the packet in each of the multiple clients, each client receiving the packet either directly from the host or from a next client upstream in the daisy-chain loop, the packet having an initial period of signal inactivity and a subsequent period of signal activity; and comparing, in each of the multiple clients, the initial period of signal inactivity of the start-of-packet identifier to the subsequent period of signal activity. - View Dependent Claims (26, 27, 28, 29, 30, 31)
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Specification