USER DEVICE OF EARTHQUAKE ALERT SYSTEM

• Main Authors: YANG WEIIH, LUO ZHI PENG
• Format: Patent
• Language: English; Japanese
• Published: 02.04.2020
• Subjects: ALARM SYSTEMS; DETECTING MASSES OR OBJECTS; GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; MEASURING; ORDER TELEGRAPHS; PHYSICS; SIGNALLING; SIGNALLING OR CALLING SYSTEMS; TESTING

To provide an earthquake detecting mechanism that is able to detect an earthquake and to issue an earthquake alert without using existing earthquake detecting stations.SOLUTION: A user device 13 of an earthquake alert server 11 is provided. The earthquake alert server 11 divides a map into a plurality of geographic grids and receives earthquake reporting messages 102 from a plurality of user devices 13. The earthquake alert server 11 monitors the number of reporting messages of each geographic grid within a time interval, determines candidate earthquake grids, and determines earthquake grids according to an adjacent relationship among the candidate earthquake grids. The earthquake alert server 11 chooses any two of the earthquake grids, classifies the earthquake grids into two groups, and increases a far value of each earthquake grid in the group whose reporting time is later. After multiple choices, the earthquake alert server 11 labels the earthquake grid having the smallest far value as an epicenter grid and transmits an earthquake alert message 104 to a plurality of remote devices according to it.SELECTED DRAWING: Figure 1 【課題】既存の地震検出局の使用を伴わずに、地震を検出し、地震警報を発行できる地震検出機構を提供する。【解決手段】地震警報サーバ１１のユーザ機器１３を提供する。地震警報サーバ１１は、マップを複数の地理格子に分割し、複数のユーザ機器１３から地震報告メッセージ１０２を受信する。地震警報サーバ１１は、時間間隔内の各地理格子の報告メッセージの数を監視し、候補地震格子を決定し、候補地震格子の中の隣接関係に従って地震格子を決定する。地震警報サーバ１１は、地震格子のいずれか２つを選択し、地震格子を２つの群に分類し、報告時間がより遅い群内の各地震格子の遠方値を増加する。多数の選択の後、地震警報サーバ１１は、最小遠方値を有する地震格子を震源地格子として標示し、それに応じて複数の遠隔機器に地震警報メッセージ１０４を送信する。【選択図】図１