Wireless location system in multi-corridor buildings

    公开(公告)号:US11570580B2

    公开(公告)日:2023-01-31

    申请号:US17178888

    申请日:2021-02-18

    申请人: CenTrak, Inc.

    发明人: Israel Amir

    摘要: A system and methods for estimating the location of a mobile device are disclosed. In accordance with one embodiment, a mobile device located within a first corridor of a building receives (1) a first wireless electromagnetic signal and a first ultrasound signal from a first beacon located in the first corridor, (2) a second wireless electromagnetic signal and a second ultrasound signal from a second beacon located in the first corridor, and (3) a third wireless electromagnetic signal from a third beacon located in a second corridor of the building. The first wireless electromagnetic signal, the first ultrasound signal, the second wireless electromagnetic signal, and the second ultrasound signal are used to estimate a location of the mobile device.

    Method and system for monitoring animals

    公开(公告)号:US11490598B2

    公开(公告)日:2022-11-08

    申请号:US16543182

    申请日:2019-08-16

    申请人: INVOXIA

    摘要: A method for monitoring an animal with an autonomous monitoring device in close proximity to the animal, the monitoring device having a first sensor and a second sensor of higher electric power consumption. The method includes measuring a first parameter with the first sensor, the second sensor being deactivated. An estimated status of the animal is determined based on the first parameter. If the estimated status corresponds to a particular status, the second sensor is activated and measures a second parameter which is used to determine a specified estimated status of the animal.

    Management device, management system, and position correction method

    公开(公告)号:US11408958B2

    公开(公告)日:2022-08-09

    申请号:US17041988

    申请日:2019-03-08

    摘要: The present application relates to correction of position data used in a position information collection system, in which measurement points correspond to position data of a mobile body at respective time points and a movement path of the mobile body connects the measurement points in a time series. When the position data produces a movement path of the mobile body which passes through a not-enterable area, the position data is corrected such that the movement path of the mobile body circumvents the not-enterable area without reducing positioning accuracy, by performing position correction operations which include: determining a crossing status with regard to how the movement path crosses the not-enterable area; counting a number of the measurement points within the not-enterable area; and correcting the position data such that the movement path circumvents the not-enterable area.