Accession Number : ADD013048

Title :   Universal Microcomputer for Individual Sensors.

Descriptive Note : Patent, Filed 9 Jun 83, patented 31 Dec 85,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Stixrud,Thomas E ; Sotirin,Barbara

Report Date : 31 Dec 1985

Pagination or Media Count : 12

Abstract : This invention is an apparatus and method created around a specialized microcomputer attachable to and addressable to each thermister in an array of thermisters used to measure temperature in the sea. The invention provides a number of options so that the same model of microcomputer can be adapted to several different modes of operation and used to monitor a variety of other sensors that have electrical resistance, voltage or current as outputs. Alternate modes of operation for resistive sensors are presented where a number that fixes the measurement as a fraction of the dynamic range of the variable being measured is determined. The system includes the circuits and memory needed to adapt it to any of a variety of sensors measuring physical quantities. The microcomputer contains a counter that can be incremented at several rates, a voltage comparator which can be used to interrupt the counter at a number that represents the measurement, input/output buffers for connections with a remote master control unit whereby command instructions and data can be relayed to and from the microcomputer, and a voltage reference source.

Descriptors :   *PATENTS, *MICROCOMPUTERS, *CONTROL SYSTEMS, *REMOTE SYSTEMS, *THERMISTORS, *DETECTORS, OPERATION, INSTRUCTIONS, ELECTRICAL RESISTANCE, TEMPERATURE, MODELS, MEASUREMENT, ARRAYS, DYNAMIC RANGE, BUFFERS, INPUT OUTPUT PROCESSING, OPERATION, SOURCES, VOLTAGE, PHYSICAL PROPERTIES, QUANTITY

Subject Categories : Computer Systems
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE