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    • 5. 发明授权
    • Indoor localization using commercial frequency-modulated signals
    • 使用商业频率调制信号进行室内定位
    • US08548497B2
    • 2013-10-01
    • US13328613
    • 2011-12-16
    • Dimitrios LymberopoulosJie LiuNissanka Arachchige Bodhi PriyanthaYin Chen
    • Dimitrios LymberopoulosJie LiuNissanka Arachchige Bodhi PriyanthaYin Chen
    • H04W64/00
    • H04W4/04G01S5/0252H04W4/043H04W4/60H04W64/00
    • A commercial frequency-modulated (FM) radio signal indoor localization system and method for finding a location of a mobile embedded device (such as a smartphone) within a building. Indoor localization is performed by receiving commercial FM radio signals on the device, analyzing the signals using signal quality metrics, and generating signal quality vectors for each signal and signal quality metric used for the signal. The signal quality metric can be any physical signal quality indicator. The signal quality vectors are added to obtain a current location fingerprint. The current location fingerprint is compared to fingerprints stored in a fingerprint database. The location associated with the stored fingerprint that is the closest match to the current fingerprint location is designated as the current location in the building of the mobile embedded device. Locally generated radio signals can be used in conjunction with the commercial FM radio signals to improve localization accuracy.
    • 商业频率调制(FM)无线电信号室内定位系统和用于在建筑物内找到移动嵌入式设备(例如智能电话机)的位置的方法。 通过在设备上接收商业FM无线电信号来进行室内定位,使用信号质量度量来分析信号,以及为信号使用的每个信号和信号质量度量生成信号质量向量。 信号质量度量可以是任何物理信号质量指标。 添加信号质量向量以获得当前位置指纹。 将当前位置指纹与存储在指纹数据库中的指纹进行比较。 与存储的指纹相关联的与当前指纹位置最接近的位置的位置被指定为移动嵌入式设备的建筑物中的当前位置。 本地生成的无线电信号可以与商业FM无线电信号结合使用,以提高定位精度。
    • 7. 发明申请
    • ENERGY EFFICIENT CONTINUOUS SENSING FOR COMMUNICATIONS DEVICES
    • 能量有效连续传感通信设备
    • US20120100895A1
    • 2012-04-26
    • US12912456
    • 2010-10-26
    • Nissanka Arachchige Bodhi PriyanthaJie LiuDimitrios Lymperopoulos
    • Nissanka Arachchige Bodhi PriyanthaJie LiuDimitrios Lymperopoulos
    • H04B1/38
    • H04W52/0293G06F1/3293Y02D10/122Y02D70/162Y02D70/164
    • A “Communication Device with Energy Efficient Sensing” provides various techniques for enabling a variety of sensor-based applications and processes while conserving energy on mobile communications devices. More specifically, the Communication Device with Energy Efficient Sensing provides a novel sensing architecture for mobile communications devices where sampling and, in various embodiments, processing, of sensor data received from one or more sensors is offloaded to a dedicated low-power processor having the capability to interact with a primary processor of the communications device. Such sensors include, but are not limited to accelerometers, ambient light sensors, compasses, microphones, pressure sensors, touch sensors, low-power radio devices, etc. This approach enables the communications device to perform continuous sensing with a low power overhead. In various tested embodiments, it has been observed that that the sensing architecture described herein can be two to three orders of magnitude more energy efficient in comparison to conventional communications devices.
    • “具有能量效率感知的通信设备”提供了各种技术,用于实现各种基于传感器的应用和过程,同时节省移动通信设备上的能量。 更具体地,具有能量效率感知的通信设备为移动通信设备提供了新颖的感测架构,其中从一个或多个传感器接收的传感器数据的采样和在各种实施例中处理被卸载到具有能力的专用低功率处理器 以与通信设备的主处理器交互。 这种传感器包括但不限于加速度计,环境光传感器,罗盘,麦克风,压力传感器,触摸传感器,低功率无线电设备等。这种方法使得通信设备能够以低功率开销执行连续感测。 在各种测试的实施例中,已经观察到,与常规通信设备相比,本文所描述的感测架构可以比能量效率高两到三个数量级。