Wheeled vehicle mounted with RFID tag, RFID tag, speed measurement system, and speed measurement method
First Claim
Patent Images
1. A wheeled vehicle comprising:
- an RFID tag comprising a memory portion, a battery, a rectifier circuit, a voltage control circuit, a processing circuit, and a charge control circuit,wherein the memory portion is configured to hold identification information,wherein the processing circuit includes a demodulation circuit,wherein the RFID tag is configured to send the identification information in a case of receiving a signal,wherein, in the case of receiving the signal, the charge control circuit is configured to examine whether a voltage of the battery reaches a given value, and to charge the battery in a case where the voltage of the battery does not reach the given value, andwherein the rectifier circuit is electrically connected to the demodulation circuit through the voltage control circuit and the battery.
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Abstract
An RFID tag having a memory portion for holding information on a wheeled vehicle is mounted on the wheeled vehicle, and an external interrogator and the RFID tag exchange information with each other. Further, an RFID tag having a memory portion for holding information on a wheeled vehicle and a communication device for exchanging information with the RFID tag are set on the wheeled vehicle. When the external interrogator and the RFID tag exchange information with each other, the communication device holds information of a situation, for example, speed information, information on date and time, and the like in the memory portion in the RFID tag.
25 Citations
24 Claims
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1. A wheeled vehicle comprising:
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an RFID tag comprising a memory portion, a battery, a rectifier circuit, a voltage control circuit, a processing circuit, and a charge control circuit, wherein the memory portion is configured to hold identification information, wherein the processing circuit includes a demodulation circuit, wherein the RFID tag is configured to send the identification information in a case of receiving a signal, wherein, in the case of receiving the signal, the charge control circuit is configured to examine whether a voltage of the battery reaches a given value, and to charge the battery in a case where the voltage of the battery does not reach the given value, and wherein the rectifier circuit is electrically connected to the demodulation circuit through the voltage control circuit and the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A vehicle information system comprising:
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a first interrogator configured to detect first identification information on an RFID tag set on a wheeled vehicle; a second interrogator configured to detect second identification information on the RFID tag set on the wheeled vehicle; and a computer that is operationally connected to the first interrogator and the second interrogator, wherein the second interrogator is placed to have a given distance from the first interrogator, wherein the second interrogator is configured to detect the second identification information, after the first interrogator detects first identification information, wherein the computer is configured to hold first timing information on date and time and examine whether or not the first identification information is a vehicle identification information of a desired wheeled vehicle in detecting the first identification information, wherein the computer is configured to hold second timing information on date and time and examine whether or not the second identification information is the vehicle identification information of a desired vehicle in detecting the second identification information, wherein the computer is configured to examine a direction of the driven desired wheeled vehicle by detecting the first and second identification information; wherein the RFID tag comprises a memory portion, a charge control circuit, a processing circuit, a rectifier circuit, a voltage control circuit, and a battery, wherein, when the RFID tag receives a signal from at least one of the first interrogator and the second interrogator, the charge control circuit is configured to examine whether or not a voltage of the battery reaches a given value and to charge the battery in a case where the voltage of the battery does not reach the given value, wherein the processing circuit includes a demodulation circuit, and wherein the rectifier circuit is electrically connected to the demodulation circuit through the battery. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A vehicle information system comprising:
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a first interrogator configured to detect first identification information on an RFID tag set on a wheeled vehicle; a second interrogator configured to detect second identification information on the RFID tag set on the wheeled vehicle; a third interrogator configured to detect third identification information on the RFID tag set on the wheeled vehicle; and a computer that is operationally connected to the first interrogator and the second interrogator, wherein the second interrogator is placed to have a given distance from the first interrogator, wherein the second interrogator is configured to detect the second identification information, after the first interrogator detects first identification information, wherein the computer is configured to hold first timing information on date and time and examine whether or not the first identification information is a vehicle identification information of a desired wheeled vehicle in detecting the first identification information, wherein the computer is configured to hold second timing information on date and time and examine whether or not the second identification information is the vehicle identification information of a desired wheeled vehicle in detecting the second identification information, wherein the computer is configured to examine a direction of the driven desired wheeled vehicle by detecting the first and second identification information, wherein the third interrogator is a portable interrogator and is configured to examine whether or not the third identification information is the vehicle identification information of a desired wheeled vehicle in detecting the third identification information, wherein the RFID tag comprises a memory portion, a charge control circuit, a processing circuit, a rectifier circuit, a voltage control circuit, and a battery, wherein, when the RFID tag receives a signal from at least one of the first interrogator and the second interrogator, the charge control circuit is configured to examine whether or not a voltage of the battery reaches a given value and to charge the battery in a case where the voltage of the battery does not reach the given value, wherein the processing circuit includes a demodulation circuit, and wherein the rectifier circuit is electrically connected to the demodulation circuit through the voltage control circuit and the battery. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification