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 室內定位系統中的低耗電邊界偵測方法
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刊登日期：2014/05/21 |
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| ‧ 專利名稱 |
室內定位系統中的低耗電邊界偵測方法 |
| ‧ 專利證書號 |
I375812
8130103
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| ‧ 專利權人 |
國立臺灣大學 |
‧ 專利國家
(申請日) |
中華民國 (2008/12/02)
美國 (2009/04/22)
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| ‧ 發明人/PI |
黃寶儀 ,林宗翰 ,朱浩華 ,
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| ‧ 單位 |
電機工程學系
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| ‧ 簡歷/Experience |
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| 技術摘要 / Our Technology： |
一種室內定位系統中的低耗電邊界偵測方法，適用於偵測一攜帶一識別器之待追蹤對象是否抵達一邊界。該方法包含下列步驟：當一設於該識別器之加速度計所偵測到的該識別器之一速度不為零時，根據一過去取樣時間區間之最近二次定位資訊，計算一平均速度等於該識別器於該過去取樣時間區間之行進距離除以該過去取樣時間區間；接著，計算一預估時間區間等於最近一次取樣位置與該邊界之距離除以該平均速度；然後經過該預估時間區間後，進行下一次定位。
A method of reducing power consumption of a radio badge in a boundary detection localization system is disclosed, in which the radio badge is carried by a tracked target and performs location sampling communication with an infrastructure component of the localization system at the start and end of sampling time intervals such that positions of the radio badge can be estimated. The method includes: determining a velocity of the radio badge; estimating a critical time for the radio badge to reach a critical region through division in which a critical distance from an estimated position obtained at the end of a most recent sampling time interval to the critical region is the dividend, and the velocity of the radio badge is the divisor; and controlling the radio badge to perform location sampling communication with the infrastructure component of the localization system at the end of the critical time.
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| 專利簡述 / Intellectual Properties： |
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聯繫方式 / Contact： |
| 臺大產學合作總中心 / Center of Industry-Academia Collaboration, NTU |
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| Email：ordiac@ntu.edu.tw |
電話/Tel：02-3366-9945 |
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