03-05-2018 дата публикации
Номер: US20180122159A1
A transponder module of a system for measurement of a race time includes a time base in a microcontroller, which is activated upon receipt of a low-frequency electromagnetic field signal from a transmission antenna of a measuring system which is disposed at the level of a line of passage. The microcontroller, once woken up, is capable of measuring several successive intensities of the captured electromagnetic field in order to reconstruct a curve of the electromagnetic field and to determine a crossing time on the line of passage of the transponder module with the activated time base thereof in order to transmit, to a decoder unit of the measuring system, a signal of the result of the time of crossing determined by the microcontroller. 1. A transponder module intended to be disposed on a moving object for determination of a crossing time on a line of passage for a sports competition of a measuring system , the system comprising at least one transmission unit of a low-frequency electromagnetic field signal via an antenna disposed at the level of the line of passage , and a decoder unit , in order at least to receive at least one measurement signal from the activated transponder module near the line of passage , the transponder module comprising a low-frequency signal receiver in order to receive the electromagnetic field signal via a receiving antenna in order to be woken up by said electromagnetic field signal , a microcontroller receiving a receiving signal from the receiver , at least one transmitter linked to the microcontroller for transmission via a high-frequency antenna of at least one measurement result in a high-frequency measurement signal ,wherein the transponder module comprises a time base in the microcontroller, the time base being activated upon receiving the electromagnetic field signal, andwherein the microcontroller, once woken up, is capable of measuring several successive intensities of the captured electromagnetic field signal in order to ...
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