METHOD AND SYSTEM FOR VERIFYING THE CALIBRATION STATE OF AN ELECTRICITY METER INSTALLED ON-BOARD A RAILWAY VEHICLE
The method involves injecting a standard signal i.e. electric current (i), of known characteristics in an electrical measuring instrument in a circuit located upstream of the instrument by an embarked verifier (10). A judgment is made whether the instrument is in a proper calibration state, if the r...
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| Format: | Patent |
| Sprache: | eng ; por |
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| Zusammenfassung: | The method involves injecting a standard signal i.e. electric current (i), of known characteristics in an electrical measuring instrument in a circuit located upstream of the instrument by an embarked verifier (10). A judgment is made whether the instrument is in a proper calibration state, if the response is situated at interior of acceptable judged confidence interval for each standard signal. A judgment is made whether the instrument is no longer in the proper calibration state, if the response is situated at exterior of acceptable judged confidence interval for any of standard signals. Independent claims are also included for the following: (1) a railway vehicle including an embedded verifier comprising a reference simulator (2) a transmitter-receiver system including a transmitter located in a railway vehicle. |
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