SYSTEM FOR PREVENTING TAMPERING WITH A SIGNAL CONDITIONER REMOTE FROM A HOST SYSTEM

A system for prevention of tampering with signal conditioning circuitry (110) in meter electronics (20). In accordance with this invention a host system (100) remote from the signal conditioner (110) periodically (301) transmits a request for authentication information to the signal conditioner. The...

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Bibliographische Detailangaben
Hauptverfasser:	SAMSON, ALLAN L, KEILTY, MICHAEL
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING MEASURING MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL METERING BY VOLUME PHYSICS TARIFF METERING APPARATUS TESTING
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Beschreibung
Zusammenfassung:	A system for prevention of tampering with signal conditioning circuitry (110) in meter electronics (20). In accordance with this invention a host system (100) remote from the signal conditioner (110) periodically (301) transmits a request for authentication information to the signal conditioner. The signal conditioning circuitry (110) (401) receives the request and (402) transmits authentication information back to the host system (100). The host system (100) receives the authentication information from the signal conditioning circuitry (110) and stores the authentication information in memory to provide an audit trail.