Management device, management method and program

{
  "publication_number": "US10541761B2",
  "country": "US",
  "kind": "B2",
  "title": "Management device, management method and program",
  "abstract": "A management device includes a reception strength acquirer that, when at least one reading device receives transmission signals transmitted by a plurality of transmission devices attached to respective management targets, acquires reception strengths of the transmission signals; and a degradation determinator that, on the basis of a comparison result between a newly acquired reception strength and an index value based on a plurality of reception strengths acquired during a predetermined period, determines whether or not one transmission device of the plurality of transmission devices has degraded. The one transmission device has transmitted a transmission signal corresponding to the newly acquired reception strength.",
  "claims": [
    "1. A management device comprising: a reception strength acquirer configured to acquire, when at least one reading device receives transmission signals transmitted by a plurality of transmission devices attached to respective management targets, reception strengths of the transmission signals; and a degradation determinator configured to determine, on a basis of a comparison result between a newly acquired reception strength and an index value based on a plurality of reception strengths acquired during a predetermined period, whether or not one transmission device of the plurality of transmission devices has degraded, the one transmission device having transmitted a transmission signal corresponding to the newly acquired reception strength.",
    "2. The management device according to claim 1, wherein the index value is calculated for each of the at least one reading device on a basis of the plurality of reception strengths acquired during the predetermined period, and the degradation determinator is further configured to determine whether or not one transmission device of the plurality of transmission devices which has transmitted the transmission signal corresponding to the newly acquired reception strength has degraded on a basis of a comparison result between the newly acquired reception strength and the index value corresponding to one of the at least one reading device which has received the transmission signal corresponding to the newly acquired reception strength.",
    "3. The management device according to claim 1, wherein the index value is calculated for each of the plurality of transmission devices on a basis of the plurality of reception strengths acquired during the predetermined period, and the degradation determinator is further configured to determine whether or not one transmission device of the plurality of transmission devices which has transmitted the transmission signal corresponding to the newly acquired reception strength has degraded on a basis of a comparison result between the newly acquired reception strength and the index value corresponding to the one transmission device has transmitted the transmission signal corresponding to the newly acquired reception strength.",
    "4. The management device according to claim 1, wherein the degradation determinator is further configured to determine that the one transmission device of the plurality of transmission devices has degraded when the newly acquired reception strength is lower than the index value.",
    "5. The management device according to claim 1, further comprising an index value calculator configured to acquire a highest reception strength of reception strengths greater than or equal to a threshold value that is a criterion for determining degradation of the one transmission device of the plurality of transmission devices during the predetermined period and calculate the index value on a basis of the highest reception strength.",
    "6. The management device according to claim 1, wherein the at least one reading device comprises a plurality of reading devices attached to respective cargo handling machines, and the reception strength acquirer is further configured to acquire reception strengths of the transmission signals from the plurality of reading devices during a cargo handling operation for the management targets by the cargo handling machines.",
    "7. A transmission device management method comprising: acquiring, when at least one reading device receives transmission signals transmitted by a plurality of transmission devices attached to respective management targets, reception strengths of the transmission signals; and determining, on a basis of a comparison result between a newly acquired reception strength and an index value based on a plurality of reception strengths acquired during a predetermined period, whether or not one transmission device of the plurality of transmission devices has degraded, the one transmission device having transmitted a transmission signal corresponding to the newly acquired reception strength.",
    "8. A non-transitory computer-readable medium having a program causing a computer of a management device to function as: a reception strength acquirer configured to acquire, when at least one reading device receives transmission signals transmitted by a plurality of transmission devices attached to respective management targets, reception strengths of the transmission signals; and a degradation determinator configured to determine, on a basis of a comparison result between a newly acquired reception strength and an index value based on a plurality of reception strengths acquired during a predetermined period, whether or not one transmission device of the plurality of transmission devices has degraded, the one transmission device having transmitted a transmission signal corresponding to the newly acquired reception strength."
  ],
  "description_excerpt": "This application is a National Stage of International Application No. PCT/JP2017/031963 filed Sep. 5, 2017, claiming priority based on Japanese Patent Application No. 2016-191005 filed Sep. 29, 2016, the content of which are incorporated herein by reference.\n\nThe present invention relates to a management device, a management method and a program.\n\nIn recent years, transmission devices such as integrated circuit (IC) tags have been attached to various management targets. A transmission device transmits a signal, which includes an identification (ID) for uniquely identifying the transmission device. A reading device which receives the signal transmitted by the transmission device acquires information, such as a location and the like of a management target to which the transmission device is attached, by receiving the signal and detecting the ID. It is possible to manage the management target by using the information of the location and the like. It is not easy to separately determine degradation of a large number of transmission devices. Therefore, there is a necessity for a device capable of easily determining degradation of a large quantity of transmission devices. Patent Document 1 to Patent Document 3 disclose related technologies.\n\nPatent Literature [Patent Document 1] Japanese Unexamined Patent Application, First Publication No. 2007-199938 [Patent Document 2] Japanese Unexamined Patent Application, First Publication No. 2008-019046 [Patent Document 3] Japanese Unexamined Patent Application, First Publication No. 2007-128505",
  "cpc": [
    "H04B 17/17",
    "B66F 9/0755",
    "B66F 9/24",
    "G06K 17/00",
    "G06K 19/07",
    "G06K 7/00",
    "G06K 7/10",
    "H04B 17/23",
    "H04B 17/318"
  ],
  "ipc": [
    "H04B 17/17",
    "H04B 17/23",
    "H04B 17/318"
  ],
  "assignees": [
    "NEC CORP"
  ],
  "inventors": [
    "UCHIMURA JUN",
    "TAKAHASHI HIDEAKI"
  ],
  "filing_date": "2017-09-05",
  "publication_date": "2020-01-21",
  "grant_date": "2020-01-21",
  "priority_date": "2016-09-29",
  "application_number": "US-201716336173-A",
  "family_id": "61763415",
  "citations": [
    "JP2007008574A",
    "JP2007128505A",
    "JP2007199938A",
    "JP2008019046A",
    "JP2011241567A",
    "JP2013020501A",
    "US2015362322A1"
  ]
}