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Disclosed is a method and arrangement for use in an electrical utility meter, the electrical utility meter operable to be connected to a plurality of electrical service types. The arrangement is operable to identify a present service type, the present service type being one of the plurality of elect

Disclosed is a method and arrangement for use in an electrical utility meter, the electrical utility meter operable to be connected to a plurality of electrical service types. The arrangement is operable to identify a present service type, the present service type being one of the plurality of electrical service types to which the electrical utility meter is connected. The arrangement comprises: conversion circuit for obtaining measured voltage magnitude and phase angle data for a plurality of phases in a polyphase electrical system; a memory; and a processor connected to said memory and said conversion circuit. The processor is operable to execute programming steps stored in the memory to receive the measured voltage magnitude and phase angle data from the conversion circuit and identify the present electrical service type based on the measured voltage magnitude and phase angle data.

대표청구항 ▼

Disclosed is a method and arrangement for use in an electrical utility meter, the electrical utility meter operable to be connected to a plurality of electrical service types. The arrangement is operable to identify a present service type, the present service type being one of the plurality of elect

Disclosed is a method and arrangement for use in an electrical utility meter, the electrical utility meter operable to be connected to a plurality of electrical service types. The arrangement is operable to identify a present service type, the present service type being one of the plurality of electrical service types to which the electrical utility meter is connected. The arrangement comprises: conversion circuit for obtaining measured voltage magnitude and phase angle data for a plurality of phases in a polyphase electrical system; a memory; and a processor connected to said memory and said conversion circuit. The processor is operable to execute programming steps stored in the memory to receive the measured voltage magnitude and phase angle data from the conversion circuit and identify the present electrical service type based on the measured voltage magnitude and phase angle data. bject vehicle and a curvature radius of a vehicle locus of said subject vehicle. 3. The method as set forth in claim 1, wherein said curved traffic lane determining step determines whether or not said traffic lane is curved in accordance with a motion distance of said preceding vehicle along a direction perpendicular to said traffic lane. 4. The method as set forth in claim 3, wherein said curved traffic lane determining step comprises the steps of: determining whether or not a waiting time period has passed after said preceding vehicle is deviated from said preceding vehicle recognizing region; determining whether said motion distance is larger than a first threshold value at every predetermined period time for a determining time period, after said waiting time period has passed; counting a number of affirmative determinations that said motion distance is larger than said first threshold value; and determining whether or not the number of said affirmative determinations is larger than a second threshold value, so that said traffic lane is determined to be curved, when the number of said affirmative determinations is larger than said second threshold value. 5. The method as set forth in claim 3, wherein said curved traffic lane determining step comprises the steps of: determining whether said motion distance is larger than a first threshold value at every predetermined period time for a determining time period, after said preceding vehicle is deviated from said preceding vehicle recognizing region; counting a number of affirmative determinations that said motion distance is larger than said first threshold value; and determining whether or not the number of said affirmative determinations is larger than a second threshold value, so that said traffic lane is determined to be curved, when the number of said affirmative determinations is larger than said second threshold value. 6. The method as set forth in claim 3, wherein said curved traffic lane determining step comprises the steps of: determining whether or not a waiting time period has passed after said preceding vehicle is deviated from said preceding vehicle recognizing region; and determining whether said motion distance is larger than a threshold value, after said waiting time period has passed, so that said traffic lane is determined to be curved when said motion distance is larger than said threshold value. 7. The method as set forth in claim 1, wherein said predetermined time period is changed in accordance with a speed of said subject vehicle. 8. The method as set forth in claim 1, wherein said predetermined time period is changed in accordance with a curvature radius of a vehicle locus of said subject vehicle. 9. The method as set forth in claim 1, wherein said predetermined time period is changed in accordance with a distance between said subject vehicle and said preceding vehicle. 10. A method for recognizing a preceding vehicle traveling on a traffic lane on which a subject vehicle is traveling, comprising the steps of: setting a preceding vehicle recognizing region ahead of said subject vehicle; determining whether or not said preceding vehicle is deviated from said preceding vehicle recognizing region; determining whether or not a waiting time period has passed after said preceding vehicle is deviated from said preceding vehicle recognizing region; determining whether a motion distance of said preceding vehicle along a direction perpendicular to said traffic lane is larger than a first threshold value at every predetermined period time for a determining time period, after said waiting time period has passed; counting a number of affirmative determinations that said motion distance is larger than said first threshold value; determining whether or not the number of said affirmative determinations is larger than a second threshold value, so that said traffic lane is determined to be curved, when the number of said affirmative determina