High resolution time interval meter

Title: High resolution time interval meter

Full Record
Other Related Research

Abstract

Method and apparatus are provided for measuring the time interval between two events to a higher resolution than reliability available from conventional circuits and component. An internal clock pulse is provided at a frequency compatible with conventional component operating frequencies for reliable operation. Lumped constant delay circuits are provided for generating outputs at delay intervals corresponding to the desired high resolution. An initiation START pulse is input to generate first high resolution data. A termination STOP pulse is input to generate second high resolution data. Internal counters count at the low frequency internal clock pulse rate between the START and STOP pulses. The first and second high resolution data are logically combined to directly provide high resolution data to one counter and correct the count in the low resolution counter to obtain a high resolution time interval measurement.

Inventors:: Martin, A D

Issue Date:: 1986-05-09

Research Org.:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

OSTI Identifier:: 6535960

Application Number:: ON: DE87007246

Assignee:: Dept. of Energy

DOE Contract Number:: W-7405-ENG-36

Resource Type:: Patent

Resource Relation:: Other Information: Portions of this document are illegible in microfiche products

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING; TIME INTERVAL ANALYZERS; TIME RESOLUTION; TIMING CIRCUITS; COUNTING CIRCUITS; DELAY CIRCUITS; FLIP-FLOP CIRCUITS; GATING CIRCUITS; GHZ RANGE; INTEGRATED CIRCUITS; TIME MEASUREMENT; ELECTRONIC CIRCUITS; FREQUENCY RANGE; MEASURING INSTRUMENTS; MICROELECTRONIC CIRCUITS; MULTIVIBRATORS; PULSE CIRCUITS; RESOLUTION; TIMING PROPERTIES; 420800* - Engineering- Electronic Circuits & Devices- (-1989)

Citation Formats


                    Martin, A D. High resolution time interval meter.  United States: N. p., 1986. 
        Web.

Copy to clipboard


                    Martin, A D. High resolution time interval meter.  United States.

Copy to clipboard


                    Martin, A D. Fri .  
        "High resolution time interval meter".  United States.

Copy to clipboard


                    
@article{osti_6535960,

  title        = {High resolution time interval meter},

  author       = {Martin, A D},

  abstractNote = {Method and apparatus are provided for measuring the time interval between two events to a higher resolution than reliability available from conventional circuits and component. An internal clock pulse is provided at a frequency compatible with conventional component operating frequencies for reliable operation. Lumped constant delay circuits are provided for generating outputs at delay intervals corresponding to the desired high resolution. An initiation START pulse is input to generate first high resolution data. A termination STOP pulse is input to generate second high resolution data. Internal counters count at the low frequency internal clock pulse rate between the START and STOP pulses. The first and second high resolution data are logically combined to directly provide high resolution data to one counter and correct the count in the low resolution counter to obtain a high resolution time interval measurement.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1986},

  month        = {5}

}

Copy to clipboard

Patent:

Search for the full text at the U.S. Patent and Trademark Office

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE Patents and OSTI.GOV collections:

High resolution time interval counter

Patent Condreva, K J

A high resolution counter circuit measures the time interval between the occurrence of an initial and a subsequent electrical pulse to two nanoseconds resolution using an eight megahertz clock. The circuit includes a main counter for receiving electrical pulses and generating a binary word--a measure of the number of eight megahertz clock pulses occurring between the signals. A pair of first and second pulse stretchers receive the signal and generate a pair of output signals whose widths are approximately sixty-four times the time between the receipt of the signals by the respective pulse stretchers and the receipt by the respectivemore »« less
High resolution time interval counter

Patent Condreva, Kenneth J [Livermore, CA]

A high resolution counter circuit measures the time interval between the occurrence of an initial and a subsequent electrical pulse to two nanoseconds resolution using an eight megahertz clock. The circuit includes a main counter for receiving electrical pulses and generating a binary word--a measure of the number of eight megahertz clock pulses occurring between the signals. A pair of first and second pulse stretchers receive the signal and generate a pair of output signals whose widths are approximately sixty-four times the time between the receipt of the signals by the respective pulse stretchers and the receipt by the respectivemore »« less
Full Text Available
Eliminating livelock by assigning the same priority state to each message that is input into a flushable routing system during N time intervals

Patent Faber, V

Livelock-free message routing is provided in a network of interconnected nodes that is flushable in time T. An input message processor generates sequences of at least N time intervals, each of duration T. An input register provides for receiving and holding each input message, where the message is assigned a priority state p during an nth one of the N time intervals. At each of the network nodes a message processor reads the assigned priority state and awards priority to messages with priority state (p-1) during an nth time interval and to messages with priority state p during an (n+1)more »« less
Dead-time compensation for a logarithmic display rate meter

Patent Larson, J A; Krueger, F P

An improved circuit is provided for application to a radiation survey meter that uses a detector that is subject to dead time. The circuit compensates for dead time over a wide range of count rates by producing a dead-time pulse for each detected event, a live-time pulse that spans the interval between dead-time pulses, and circuits that average the value of these pulses over time. The logarithm of each of these values is obtained and the logarithms are subtracted to provide a signal that is proportional to a count rate that is corrected for the effects of dead time. Themore »« less
Development of a High Resolution, Real Time, Distribution-Level Metering System and Associated Visualization, Modeling, and Data Analysis Functions

Technical Report Bank, J.; Hambrick, J.

NREL is developing measurement devices and a supporting data collection network specifically targeted at electrical distribution systems to support research in this area. This paper describes the measurement network which is designed to apply real-time and high speed (sub-second) measurement principles to distribution systems that are already common for the transmission level in the form of phasor measurement units and related technologies.
DOI: https://doi.org/10.2172/1082568

Full Text Available

Similar Records