Reading apparatus and reading method that reads transmission information from first tag and second tag arranged in road

Patent metadata

Field	Value
Publication number	US-9787367-B2
Application number	US-201615270202-A
Country	US
Kind code	B2
Filing date	Sep 20, 2016
Priority date	Oct 30, 2015
Publication date	Oct 10, 2017
Grant date	Oct 10, 2017

Abstract

A reading apparatus reads transmission information from a first tag and a second tag arranged in a road via wireless communication, and is loaded on a vehicle. The reading apparatus comprises an antenna and a controller. The antenna outputs a request signal for requesting transmission of predetermined information to the first tag and the second tag. The first tag is arranged at a first reference point as reference. The second tag is arranged at a second reference point as reference away from an advancing direction of the vehicle with respect to the first reference point. The controller stops output of the request signal when acquiring a reference distance between the first reference point and the second reference point from the first tag, calculates a required time for which the vehicle moves to the second reference point on the basis of the reference distance and a travelling speed of the vehicle.

First claim

What is claimed is:

1. A reading apparatus, which reads transmission information from a first tag and a second tag arranged in a road via wireless communication and is loaded on a vehicle, comprising:
an antenna configured to output a request signal for requesting transmission of predetermined information to the first tag and the second tag; and
a controller configured to control output of the request signal, wherein
the first tag is arranged at a first reference point as reference, and the second tag is arranged at a second reference point as reference away from an advancing direction of the vehicle with respect to the first reference point; and
the controller stops the output of the request signal when acquiring information of a reference distance serving as an interval between the first reference point and the second reference point, and meanwhile, calculates a required time for which the vehicle moves to the second reference point on the basis of the reference distance and a travelling speed of the vehicle, and starts transmission of the request signal when the required time elapses.

2. The reading apparatus according to claim 1 , wherein
the second tag transmits detection information of a sensor arranged in the road; and
the controller receives the detection information transmitted from the second tag.

3. The reading apparatus according to claim 1 , wherein
the first tag is one of a plurality of first tags arranged in the road; and
the controller stops the transmission of the request signal when receiving the information of the reference distance from one first tag among the plurality of first tags.

4. The reading apparatus according to claim 2 , wherein
the first tag is one of a plurality of first tags arranged in the road; and
the controller stops the transmission of the request signal when receiving the information of the reference distance from one first tag among the plurality of first tags.

5. The reading apparatus according to claim 1 , wherein
the controller is communicable with a travelling controller for controlling travelling of the vehicle, and can acquire information of the travelling speed from the travelling controller.

6. A reading method for reading transmission information from a first tag and a second tag arranged in a road via wireless communication, wherein the first tag is arranged at a first reference point as reference, and the second tag is arranged at a second reference point as reference away from an advancing direction of a vehicle with respect to the first reference point, including:
stopping transmission of a request signal for requesting transmission of predetermined information to the first tag and the second tag when acquiring information of a reference distance serving as an interval between the first reference point and the second reference point from the first tag;
calculating a required time for which the vehicle moves to the second reference point on the basis of the reference distance and a travelling speed of the vehicle; and
starting transmission of the request signal when the required time elapses.

Assignees

• Toshiba Tec Kk

Inventors

• Oishi Sadatoshi

Classifications

• G06K7/10316

  using at least one antenna particularly designed for interrogating the wireless record carriers (antennas in general H01Q1/22) · CPC title

• G07C5/02

  Registering or indicating driving, working, idle, or waiting time only (apparatus forming part of taximeters G07B13/00) · CPC title

• G06K7/10425

  the interrogation device being arranged for interrogation of record carriers passing by the interrogation device · CPC title

• H04B5/0062 Primary

  Electricity · mapped topic

• G06K7/10009

  sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves · CPC title