Synchronized measurement device using local area network with ethernet messaging
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United States of America Patent
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Mar 20, 2018
Issued Date -
N/A
app pub date -
May 6, 2015
filing date -
May 6, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A plurality of measurement devices have analog sensors that measure the dynamic signals of physical events, sample the data into digital format with time synchronized clocks and generate time stamped Ethernet messages that are sent to a remote host. The remote host has a master clock that evaluates decoded time stamped messages from the measurement devices and sends back a message with a time correction error signal relative to the master clock. This feedback signal is used by the measurement devices to correct a local clock for data sampling and new message generation. Eight wire cable and associated connectors are used to handle three channels of traffic, with four wires dedicated to Ethernet messages as one channel, another two wires dedicated to reset and other commands as a second channel and another two wires to transmit power from the host to the measurement devices as a third channel.
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International Classification(s)
- H04L:TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAP....
- H04Q:SELECTING
- G06F:ELECTRIC DIGITAL DATA PROCESSING
- G01P:MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, D....
- H04W:WIRELESS COMMUNICATION NETWORKS
- G01D:MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VAR....
- G01V:GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING ....
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