Position sensor, direction estimation method, and system

    公开(公告)号:US10241187B2

    公开(公告)日:2019-03-26

    申请号:US15383243

    申请日:2016-12-19

    Abstract: A sensor includes a reception antenna, a parasitic antenna terminating in a variable load, a controller, a transmitter transmitting a transmission signal, a receiver, a memory, and a processor. The controller sets an impedance value of the variable load. The receiver receives a first signal formed of signals received by the antennas and derived from the transmission signal, and the signal received by the parasitic antenna corresponding to the impedance value. The memory stores a first signal strength value of the first signal corresponding to the impedance value. The processor sets candidates of a complex propagation channel, calculates second signal strength values of a second signal respectively corresponding to the candidates, estimates a target complex propagation channel by selecting a candidate corresponding to a minimum difference among differences between the first signal strength value and the second signal strength values, and estimates a direction of arrival of the first signal.

    Scroll compressor
    8.
    发明授权

    公开(公告)号:US10393117B2

    公开(公告)日:2019-08-27

    申请号:US15117447

    申请日:2015-04-09

    Abstract: A scroll compressor includes partition plate (20) that partitions an inside of sealed container (10) into high-pressure space (11) and low-pressure space (12), and fixed scroll (30) adjacent to partition plate (20). The scroll compressor includes orbiting scroll (40) that meshes with fixed scroll (30) to form compression chamber (50), rotation restrictor (90) that prevents rotation of orbiting scroll (40), and main bearing (60) that supports orbiting scroll (40). Fixed scroll (30), orbiting scroll (40), rotation restrictor (90), and main bearing (60) are disposed in low-pressure space (12), and fixed scroll (30) and orbiting scroll (40) are disposed between partition plate (20) and main bearing (60). The scroll compressor includes bearing coupler (102) provided in main bearing (60), scroll coupler (101) provided in fixed scroll (30), and pillar member (100) having a lower end and an upper end, the lower end being inserted in bearing coupler (102) and the upper end being inserted in scroll coupler (101). A coupling region where pillar member (100) couples with scroll coupler (101) is in intersecting relationship with a horizontal plane positioned at a center of a scroll wrap height of fixed scroll (30).

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