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    • 1. 发明授权
    • Oscillation drive device, physical quantity measurement device and electronic apparatus
    • 振荡驱动装置,物理量测量装置和电子装置
    • US08618889B2
    • 2013-12-31
    • US12704785
    • 2010-02-12
    • Naoki YoshidaMasahiro Kanai
    • Naoki YoshidaMasahiro Kanai
    • H03B5/32
    • G01C19/56H03B5/06H03B5/32H03K5/1515H03K5/2481
    • There is provided an oscillation drive device that forms an oscillation loop with a vibrator for exciting a driving vibration on the vibrator. The oscillation drive device includes: a comparator that excites a driving vibration on the vibrator based on a signal in the oscillation loop with a given voltage as a reference; an oscillation detector that detects oscillation in the oscillation loop; a signal generation circuit that generates a switching control signal based on an oscillation result given by the oscillation detector; and a switch circuit inserted between the vibrator in the oscillation loop and an output of the comparator, wherein, during an oscillation startup stage in which oscillation in the oscillation loop is not detected by the oscillation detector, the switch circuit alternately switches, based on the switching control signal, between a period in which the output of the comparator and the vibrator are electrically connected and a period in which a predetermined set voltage is supplied to the vibrator.
    • 提供了一种振动驱动装置,其用振动器形成振动环,用于激励振动器上的驱动振动。 振荡驱动装置包括:比较器,基于振荡回路中以给定电压为基准的信号,激励振动器上的驱动振动; 振荡检测器,用于检测振荡回路中的振荡; 信号生成电路,其基于由所述振荡检测器给出的振荡结果生成切换控制信号; 以及插入在所述振荡回路中的振子与所述比较器的输出端之间的开关电路,其中,在所述振荡检测器未检测到所述振荡回路的振荡的振荡起振阶段期间,所述开关电路基于 在比较器的输出与振子的电气连接的期间和向振子供给规定的设定电压的期间之间切换控制信号。