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公开(公告)号：US4308501A
公开(公告)日：1981-12-29
申请号：US621706
申请日：1975-10-09
CPC分类号： F42C13/08 , F42C11/007 , G01P3/52
摘要： A digital circuit for sensing peaks exceeding a predetermined threshold innalog signals employs clock and control oscillators arranged such that their frequencies vary in opposite senses in response to changes in the sensed signal. The clock oscillator frequency is counted during sample intervals of durations which vary inversely with the control oscillator frequency. A count increase (or decrease) of predetermined amount from one sample interval to the next, followed by a count decrease (or increase) from another sample interval to the next, results in an output signal. In a preferred embodiment, the clock frequency is counted in an up/down counter which, for each sample interval, is counted up and down for equal numbers of control oscillator cycles. The net count at the end of a sample interval is therefore an indication of the magnitude and polarity of changes in the sensed signal. In a particular utilization the circuit serves in a mine fuze and senses the peak of a magnetic field signal such as is associated with a tank or other vehicle.
摘要翻译： 用于在模拟信号中感测超过预定阈值的峰值的数字电路采用时钟和控制振荡器，其布置成使得它们的频率响应于感测信号的变化而以相反的方式变化。 在与控制振荡器频率反向变化的持续时间的采样间隔期间对时钟振荡器频率进行计数。 从一个采样间隔到下一个采样间隔的计数增加（或减小），随后从另一个采样间隔到下一个采样间隔的计数减小（或增加）导致输出信号。 在优选实施例中，时钟频率在升/降计数器中计数，对于每个采样间隔，对于相等数量的控制振荡器周期，上下计数。 因此，采样间隔结束时的净计数表示感测信号的变化的大小和极性。 在一个特定的利用中，该电路用于矿井引信，并且感测与罐或其他车辆相关联的磁场信号的峰值。
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2.发明授权Ringing oscillator including a resonant circuit with frequency divider feedback loop 失效振荡振荡器包括具有分频器反馈回路的谐振电路
公开(公告)号：US3995234A
公开(公告)日：1976-11-30
申请号：US619713
申请日：1975-10-06
申请人： Thomas E. Tuccinardi
发明人： Thomas E. Tuccinardi
摘要： A tuned circuit resonates to produce a ringing signal. The signal is fed to frequency divider which generates an oscillator output pulse. The pulse is fed back to the tuned circuit for impulse excitation thereof, producing subsequent oscillator output pulses.
摘要翻译： 调谐电路谐振以产生振铃信号。 该信号被馈送到产生振荡器输出脉冲的分频器。 脉冲被反馈到调谐电路用于其脉冲激励，产生后续的振荡器输出脉冲。
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