Onboard control device, wayside coil, ground control device, wireless train control system, and train location correction method

Abstract

An onboard control device includes an obtaining unit to obtain information from a wayside coil, for identifying a location of the wayside coil, and a control unit to correct train location information, or not, on a basis of correction permission information, the permission information being associated with the wayside coil and including information that indicates whether correction to the train location information is permissible. When the permission information indicates that the correction is permissible, the control unit corrects the train location information by using the wayside coil information at the time when the onboard pickup coil has passed through the wayside coil, and when the permission information indicates that the correction is not permissible, the control unit does not correct the train location information at the time when the onboard pickup coil has passed through the wayside coil.

1 . An onboard control device to be installed along with an onboard pickup coil in a train, the onboard control device comprising:
 obtaining circuitry to obtain wayside coil information from a wayside coil through the onboard pickup coil, the wayside coil information being capable of identifying a location of the wayside coil; and   control circuitry to correct train location information, or not to correct the train location information on a basis of correction permission information, the train location information indicating a location of the train, the correction permission information being associated with the wayside coil, the correction permission information including information that indicates whether correction to the train location information is permissible, wherein   when the information included in the correction permission information indicates that the correction is permissible, the control circuitry corrects the train location information by using the wayside coil information at a time when the onboard pickup coil has passed through the wayside coil, and   when the information included in the correction permission information indicates that the correction is not permissible, the control circuitry does not correct the train location information at a time when the onboard pickup coil has passed through the wayside coil.   
     
     
         2 . The onboard control device according to  claim 1 , wherein
 the obtaining circuitry obtains wayside-coil location information and the correction permission information from the wayside coil through the onboard pickup coil, the wayside-coil location information being the wayside coil information and indicating a location where the wayside coil is installed, and   the control circuitry corrects a front-part location of the train by using the wayside-coil location information when first information indicating whether correction to a front-part location of the train is permissible indicates that the correction is permissible, the first information being included in the correction permission information, and   the control circuitry does not correct a front-part location of the train when the first information indicates that the correction is not permissible.   
     
     
         3 . The onboard control device according to  claim 1 , comprising storage circuitry to store therein correspondence information in which wayside-coil identification information is associated with the correction permission information, the wayside-coil identification information being capable of identifying the wayside coil, wherein
 the obtaining circuitry obtains, from the wayside coil through the onboard pickup coil, the wayside-coil identification information that is the wayside coil information,   the control circuitry searches the correspondence information by using the wayside-coil identification information obtained from the wayside coil, and   when first information indicating whether correction to a front-part location of the train is permissible indicates that the correction is permissible, the control circuitry corrects a front-part location of the train on a basis of wayside-coil location information, the first information being included in the correction permission information, the wayside-coil location information indicating a location where the wayside coil is installed, and   when the first information indicates that the correction is not permissible, the control circuitry does not correct a front-part location of the train, and   the wayside-coil location information is obtained along with the wayside-coil identification information from the wayside coil, or is included in the correspondence information.   
     
     
         4 . The onboard control device according to  claim 1 , wherein
 the obtaining circuitry obtains, from the wayside coil through the onboard pickup coil, wayside-coil identification information that is the wayside coil information, the wayside-coil identification information being capable of identifying the wayside coil,   the control circuitry obtains, from a ground control device, correspondence information in which the wayside-coil identification information is associated with the correction permission information, and searches the correspondence information by using the wayside-coil identification information obtained from the wayside coil, and   when first information indicating whether correction to a front-part location of the train is permissible indicates that the correction is permissible, the control circuitry corrects a front-part location of the train on a basis of wayside-coil location information, the first information being included in the correction permission information, the wayside-coil location information indicating a location where the wayside coil is installed, and   when the first information indicates that the correction is not permissible, the control circuitry does not correct a front-part location of the train, and   the wayside-coil location information is obtained along with the wayside-coil identification information from the wayside coil, or is included in the correspondence information.   
     
     
         5 . The onboard control device according to  claim 2 , wherein when second information indicating whether correction to a rear-part location of the train is permissible indicates that the correction is permissible, the control circuitry corrects a rear-part location of the train on a basis of the wayside-coil location information, the second information being included in the correction permission information, and
 when the second information indicates that the correction is not permissible, the control circuitry does not correct a rear-part location of the train.   
     
     
         6 . A wayside coil to communicate with an onboard pickup coil at a time when a train having the onboard pickup coil installed therein passes through the wayside coil, the wayside coil comprising:
 storage circuitry to store therein wayside-coil location information and correction permission information, the wayside-coil location information indicating a location where the wayside coil is installed, the correction permission information including information that indicates whether correction to train location information is permissible for the train, the train location information indicating a location of the train in the train; and   communication circuitry to transmit, to the train, the correction permission information and the wayside-coil location information that is wayside coil information.   
     
     
         7 . The wayside coil according to  claim 6 , wherein the correction permission information includes first information indicating whether correction to a front-part location of the train is permissible. 
     
     
         8 . The wayside coil according to  claim 6 , wherein the correction permission information includes first information indicating whether correction to a front-part location of the train is permissible, and second information indicating whether correction to a rear-part location of the train is permissible. 
     
     
         9 . A ground control device to control an operation of a train that communicates with a wayside coil through an onboard pickup coil, the ground control device comprising:
 storage circuitry to store therein correspondence information in which wayside-coil identification information is associated with correction permission information, the wayside-coil identification information being capable of identifying the wayside coil, the correction permission information including information that indicates whether correction to train location information is permissible for the train, the train location information indicating a location of the train; and   control circuitry to execute control to transmit the correspondence information to the train.   
     
     
         10 . The ground control device according to  claim 9 , wherein the correction permission information includes first information indicating whether correction to a front-part location of the train is permissible. 
     
     
         11 . The ground control device according to  claim 9 , wherein the correction permission information includes first information indicating whether correction to a front-part location of the train is permissible, and second information indicating whether correction to a rear-part location of the train is permissible. 
     
     
         12 . The ground control device according to  claim 9 , wherein when the control circuitry obtains, from the train, train location information indicating a location of the train, the control circuitry executes control to determine a path and a stop-limit position of the train on a basis of the train location information, search for a wayside coil present on a path extending from a rear-part location of the train to the stop-limit position, and transmit, to the train, correspondence information associated with a wayside coil detected as a consequence of search. 
     
     
         13 . The ground control device according to  claim 9 , wherein when the control circuitry obtains the wayside-coil identification information from the train, the control circuitry executes control to transmit correspondence information to the train, the correspondence information including correction permission information associated with the obtained wayside-coil identification information. 
     
     
         14 . A wireless train control system comprising:
 an onboard control device to be installed along with an onboard pickup coil in a train; and   the wayside coil according to  claim 6 , wherein   the onboard control device comprises:   obtaining circuitry to obtain wayside coil information from the wayside coil through the onboard pickup coil, the wayside coil information being capable of identifying a location of the wayside coil; and   control circuitry to correct train location information, or not to correct the train location information on a basis of correction permission information, the train location information indicating a location of the train, the correction permission information being associated with the wayside coil, the correction permission information including information that indicates whether correction to the train location information is permissible, wherein   when the information included in the correction permission information indicates that the correction is permissible, the control circuitry corrects the train location information by using the wayside coil information at a time when the onboard pickup coil has passed through the wayside coil, and   when the information included in the correction permission information indicates that the correction is not permissible, the control circuitry does not correct the train location information at a time when the onboard pickup coil has passed through the wayside coil.   
     
     
         15 . A wireless train control system comprising:
 an onboard control device to be installed along with an onboard pickup coil in a train; and   the ground control device according to  claim 9 , wherein   the onboard control device comprises:   obtaining circuitry to obtain wayside coil information from a wayside coil through the onboard pickup coil, the wayside coil information being capable of identifying a location of the wayside coil; and   control circuitry to correct train location information, or not to correct the train location information on a basis of correction permission information, the train location information indicating a location of the train, the correction permission information being associated with the wayside coil, the correction permission information including information that indicates whether correction to the train location information is permissible, wherein   when the information included in the correction permission information indicates that the correction is permissible, the control circuitry corrects the train location information by using the wayside coil information at a time when the onboard pickup coil has passed through the wayside coil, and   when the information included in the correction permission information indicates that the correction is not permissible, the control circuitry does not correct the train location information at a time when the onboard pickup coil has passed through the wayside coil.   
     
     
         16 .- 20 . (canceled) 
     
     
         21 . The onboard control device according to  claim 3 , wherein when second information indicating whether correction to a rear-part location of the train is permissible indicates that the correction is permissible, the control circuitry corrects a rear-part location of the train on a basis of the wayside-coil location information, the second information being included in the correction permission information, and
 when the second information indicates that the correction is not permissible, the control circuitry does not correct a rear-part location of the train.   
     
     
         22 . The onboard control device according to  claim 4 , wherein when second information indicating whether correction to a rear-part location of the train is permissible indicates that the correction is permissible, the control circuitry corrects a rear-part location of the train on a basis of the wayside-coil location information, the second information being included in the correction permission information, and
 when the second information indicates that the correction is not permissible, the control circuitry does not correct a rear-part location of the train.