公开(公告)号：US5991234A

公开(公告)日：1999-11-23

申请号：US97091

申请日：1998-06-11

Applicant: Frederic Marcel Sejalon ,  Stephen R. W. Cooper ,  Michelle Renee Schaffran

Inventor： Frederic Marcel Sejalon ,  Stephen R. W. Cooper ,  Michelle Renee Schaffran

IPC: B06B1/02 ,  B60R21/01 ,  B60R21/015 ,  G01S7/524 ,  H04B17/00

CPC classification number: B60R21/01536 ,  B06B1/0246 ,  B60R21/01526 ,  G01S7/524 ,  B06B2201/70

Abstract: An ultrasonic sensor system (40) has a transducer (44) that emits an ultrasonic signal (52), in response to an electrical excitation signal (50) from driver/receiver circuitry (46), and outputs an electrical response signal (56), in response to receipt of a reflected ultrasonic signal (54) from an occupant (54). The transducer (44) rings-down upon termination of the excitation signal (50). The transducer (44) has a natural resonant frequency that is subject to change. In an occupant sense mode, a receiver portion (68) of the driver/receiver circuitry (46) and a controller (30) process the response signal (56), resulting from transducer excitation at a predetermined frequency, to determining distance between the transducer (44) and the occupant (14). In an adjust mode, the controller (30) varies the frequency of the excitation signal (50) over a range of frequencies, and monitors the ringdown of the transducer (44) during the variation of the frequency to determine a current natural resonant frequency of the transducer (44). The controller (30) changes the predetermined frequency to the determined natural resonant frequency, so that subsequent operation in the sense mode utilizes the resonant frequency.

Abstract translation: 响应于来自驱动器/接收器电路（46）的电激励信号（50），超声波传感器系统（40）具有发射超声信号（52）的换能器（44），并输出电响应信号（56） 响应于从乘员（54）接收到反射的超声波信号（54）。 当激发信号（50）终止时，换能器（44）振铃。 换能器（44）具有可能改变的固有共振频率。 在乘员感测模式中，驱动器/接收器电路（46）的接收器部分（68）和控制器（30）处理由预定频率的换能器激励产生的响应信号（56），以确定换能器 （44）和乘客（14）。 在调整模式中，控制器（30）在频率范围内改变激励信号（50）的频率，并且在频率变化期间监视换能器（44）的振铃，以确定当前的固有谐振频率 换能器（44）。 控制器（30）将预定频率改变为确定的固有谐振频率，使得感测模式中的后续操作利用谐振频率。

公开(公告)号：US5892315A

公开(公告)日：1999-04-06

申请号：US931601

申请日：1997-09-17

Applicant: Lamar Heath Gipson ,  Bernard Cohen ,  Lee Kirby Jameson

Inventor： Lamar Heath Gipson ,  Bernard Cohen ,  Lee Kirby Jameson

IPC: B06B1/02 ,  H01L41/09 ,  H01L41/12

CPC classification number: B06B1/0246 ,  B06B2201/70

Abstract: An apparatus and method for controlling an ultrasonic transducer preferably including a signal generator circuit, a signal sensing circuit, a modulator circuit, and a bias circuit. The signal generator circuit provides a pulsed drive signal to the ultrasonic transducer. The signal sensing circuit senses the voltage and current of the drive signal. The modulator circuit provides a frequency control signal and an energy control signal to the signal generator circuit corresponding to a detected phase difference between the sensed voltage and the sensed current of the drive signal. The frequency control signal and energy control signal operate to adjust the frequency and energy level, respectively, of the drive signal.Within the transducer, a movable element in contact with a liquid is preferably positioned corresponding to the level of a dc bias signal provided by the bias circuit. By adjusting the level of the dc bias signal, the flow rate of the liquid is adjusted. By applying the drive signal to the transducer, the viscosity of the liquid is adjusted which establishes a second flow rate of the liquid. When the frequency and energy level of the drive signal are changed, a third flow rate of the liquid is established.

公开(公告)号：US5754095A

公开(公告)日：1998-05-19

申请号：US540848

申请日：1995-10-11

Applicant: Joseph F. Bader ,  Robert W. Wardzala

Inventor： Joseph F. Bader ,  Robert W. Wardzala

IPC: B06B1/02 ,  G10K9/12

CPC classification number: B06B1/0276 ,  B06B2201/70

Abstract: A tone generating circuit for delivering power to a speaker modulated fourth harmonic audio square wave signal by its fundamental to produce a modulated audio signal within a selected frequency range. The tone generating circuit may be incorporated in a power delivering circuit that supplies a pulse width modulated audio signal to a speaker in one mode of operation, a fourth harmonic modulated audio signal in a second mode of operation, and a square wave audio signal in a third mode of operation.

Abstract translation: 一种音调发生电路，用于通过其基波将功率传递到扬声器调制的第四谐波音频方波信号，以在选定的频率范围内产生经调制的音频信号。 乐音发生电路可以结合在功率输出电路中，该电力输送电路以一种操作模式向扬声器提供脉宽调制音频信号，在第二操作模式中将第四谐波调制音频信号和 第三种操作模式。

公开(公告)号：US5532539A

公开(公告)日：1996-07-02

申请号：US267414

申请日：1994-06-28

Applicant: Harald Hielscher

Inventor： Harald Hielscher

IPC: B02C19/18 ,  B06B1/02 ,  B06B1/06 ,  H01L41/08

CPC classification number: B06B1/0261 ,  B06B2201/40 ,  B06B2201/70

Abstract: The present invention relates to a method for the safe oscillation build-up of ultrasonic disintegrators and to a circuitry for carrying-out the method. In particular the present invention is a method and a circuitry substantially irrespective of deviations of the mechanical resonance frequency, with a start/stop generator 8 that periodically blocks the output of the h.f. generator 1 and maintains the blocking for a fixed dead time and then periodically repeats this procedure if during the scanning of a wide frequency band of the h.f. generator 1 the feedback amplitude of the piezo-disc 4 disposed at the ultrasonic transducer 3 falls below the value required for a safe oscillation build-up.

Abstract translation: 本发明涉及一种用于超声波破碎机的安全振荡积聚的方法以及用于执行该方法的电路。 特别地，本发明是一种基本上与机械谐振频率的偏差无关的方法和电路，其中启动/停止发生器8周期性地阻止h.f的输出。 发生器1，并且在固定的死区时间内保持阻塞，然后如果在h.f的宽频带的扫描期间，则周期性地重复该过程。 发电机1，设置在超声波换能器3处的压电盘4的反馈振幅低于安全振荡积聚所需的值。

公开(公告)号：US5315909A

公开(公告)日：1994-05-31

申请号：US961746

申请日：1992-10-16

Applicant: Yang-Wen Hsu

Inventor： Yang-Wen Hsu

IPC: B06B1/02 ,  H01H35/40 ,  G10D13/08

CPC classification number: B06B1/0207 ,  H01H35/40 ,  B06B2201/70

Abstract: A musical wind chime especially to one which generates music according to the appearance of the wind chime includes a wind chime body and a sound control circuit. A power source is used to supply the required electrical power to the sound control circuit. A wind control switch connected between the power source and the sound control circuit for responding to any wind to intermittently connect the power source to the sound control circuit and generating music therefrom. The wind control switch includes a circular conductor formed inside the wind chime body, a conductive rod hung therein but not contact with the circular conductor, and a conductive ball attached to the conductive rod such that when some wind occurs it causes the conductive ball to swing and contact with the circular conductor. A wind plate is suspended under the conductive ball for receiving wind force thereby driving the conductive ball to contact with the circular conductor.

Abstract translation: 特别是根据风铃的外观产生音乐的音乐风铃包括风铃体和声音控制电路。 电源用于向声音控制电路提供所需的电力。 连接在电源和声音控制电路之间以响应任何风的风力控制开关间歇地将电源连接到声音控制电路并从中产生音乐。 风力控制开关包括形成在风铃体内的圆形导体，悬挂在其中但不与圆形导体接触的导电棒，以及连接到导电棒的导电球，使得当发生一些风时，导致导电球摆动 并与圆形导体接触。 风板悬挂在导电球下面以接收风力，从而驱动导电球与圆形导体接触。

公开(公告)号：US4841256A

公开(公告)日：1989-06-20

申请号：US110260

申请日：1987-10-20

Applicant: Raymond F. Gastgeb

Inventor： Raymond F. Gastgeb

IPC: G01D5/243 ,  B06B1/02 ,  G01H13/00 ,  G08B13/16 ,  H03L7/06

CPC classification number: G01H13/00 ,  B06B1/0238 ,  G08B13/1609 ,  B06B2201/56 ,  B06B2201/70 ,  Y10S331/02 ,  Y10S73/04

Abstract: A structural member having a piezoelectric transmitter film and a piezoelectric receiver film adhered thereto. The transmitter film produces a vibration upon activation by a voltage controlled oscillator which forms part of a phase-lock loop circuit. The vibrations of the structural member generate electric signals on the receiver film, which feed into a phase comparator. The other input of the phase comparator is the output signal of the voltage controlled oscillator. The phase comparator will output a dc signal proportional to the difference in phase between the two signals. When the structural member becomes damped, the phase comparator will go into saturation, thereby producing a voltage which can activate an alarm signal or other device.

Abstract translation: 具有粘合到其上的压电发射器膜和压电接收膜的结构件。 发射机薄膜在通过形成锁相环电路的一部分的压控振荡器激活时产生振动。 结构构件的振动在接收器膜上产生电信号，其馈送到相位比较器中。 相位比较器的另一个输入是压控振荡器的输出信号。 相位比较器将输出与两个信号之间的相位差成比例的直流信号。 当结构件变阻尼时，相位比较器将进入饱和状态，从而产生可激活报警信号或其他装置的电压。

公开(公告)号：US4688199A

公开(公告)日：1987-08-18

申请号：US751952

申请日：1985-07-05

Applicant: Michael W. B. Lock

Inventor： Michael W. B. Lock

IPC: B01D21/00 ,  B01D21/28 ,  B01D43/00 ,  B06B1/02 ,  G05D19/02 ,  G10K11/22 ,  H04B1/02

CPC classification number: B01D21/283 ,  B01D43/00 ,  B06B1/0223 ,  G05D19/02 ,  G10K11/22 ,  B06B2201/70

Abstract: A standing wave is produced by interaction between the outputs of a pair of ultrasonic transducers driven by respective signal generating means. A phase interlock determines the phase difference between the signals and thus is progressively changed by a control signal regulated by a digital control means operated by a program so as to produce stepwise phase differences between the transducers in a cyclically varying manner. As a result, a sequence of momentary phase changes occur between the outputs of the signal generating means so that the standing wave is caused to move at a rate dependent upon the programmed operation of the digital control means.

Abstract translation: 通过由各个信号发生装置驱动的一对超声波换能器的输出之间的相互作用产生驻波。 相位互锁确定信号之间的相位差，并且因此由由程序操作的数字控制装置调节的控制信号逐渐改变，以便以循环变化的方式产生换能器之间的逐阶相位差。 结果，在信号发生装置的输出端之间发生瞬时相位变化的序列，使得使驻波以取决于数字控制装置的编程操作的速率移动。

公开(公告)号：US4559826A

公开(公告)日：1985-12-24

申请号：US650806

申请日：1984-09-14

Applicant: Craig E. Nelson

Inventor： Craig E. Nelson

IPC: B06B1/02 ,  G01N29/30 ,  G01N29/00

CPC classification number: G01N29/30 ,  B06B1/0215 ,  B06B2201/40 ,  B06B2201/70

Abstract: A precision acoustic source that is capable of producing acoustic radiation having peak and average power levels that are independently and simultaneously adjustable. The apparatus comprises an acoustic transducer and drive means for producing a drive signal comprising a series of drive pulses to the transducer, such that the transducer produces acoustic radiation having selected peak and average power levels. The drive means comprises means for establishing a series of fixed-length clock cycles, means for generating a series of trigger signals, pulse generating means responsive to each trigger signal to produce a selected number of standard pulses, an amplifier for generating a drive pulse in response to each standard pulse. The amplifier adjusts the amplitude of each drive pulse such that the peak power of the acoustic radiation is equal to the selected peak power level. Each trigger signal occurs either R or S clock cycles after the preceding trigger signal, R and S being positive integers. The apparatus further comprises means for determining R and S such that the average power of the acoustic radiation is equal to the selected average power level at the selected peak power level. In a preferred embodiment, the number S is equal to R+1.

Abstract translation: 能够产生具有独立且可同时调节的峰值和平均功率电平的声辐射的精密声源。 该装置包括声换能器和用于产生包括向换能器的一系列驱动脉冲的驱动信号的驱动装置，使得换能器产生具有所选峰值和平均功率电平的声辐射。 驱动装置包括用于建立一系列固定长度时钟周期的装置，用于产生一系列触发信号的装置，响应于每个触发信号产生选定数量的标准脉冲的脉冲发生装置，用于产生驱动脉冲的放大器 响应每个标准脉冲。 放大器调节每个驱动脉冲的幅度，使得声辐射的峰值功率等于所选择的峰值功率电平。 每个触发信号发生在先前的触发信号之后的R或S时钟周期，R和S是正整数。 该装置还包括用于确定R和S的装置，使得声辐射的平均功率等于所选择的峰值功率电平下的所选择的平均功率电平。 在优选实施例中，数S等于R + 1。

公开(公告)号：US4309675A

公开(公告)日：1982-01-05

申请号：US89289

申请日：1979-10-30

Applicant: Erich Rabe

Inventor： Erich Rabe

IPC: G05D19/02 ,  B06B1/02 ,  H02K33/18 ,  H03L7/00 ,  H03L1/00

CPC classification number: H02K33/18 ,  B06B1/0246 ,  H03L7/00 ,  B06B2201/70

Abstract: A control circuit is provided for controlling operation of an electrical or electromechanical system which oscillates at a basic frequency, such as a coil-operated compressor of a vehicle cooling system.The control circuit has a power output stage which feeds operating power to the oscillating system, and a generator which drives the power output stage and is synchronized with the oscillating system.The generator comprises an oscillator which produces a pulse sequence at twice the basic frequency of the oscillating system and a converter which modifies the pulse sequence of the oscillator so that every second pulse fed to the power stage has the same polarity. Feedback from the oscillating system is applied to an input of the oscillator to synchronize the oscillator with the oscillating system.

Abstract translation: 提供控制电路，用于控制以基本频率振荡的电气或机电系统的操作，例如车辆冷却系统的线圈操作的压缩机。 控制电路具有向振荡系统馈送工作电力的功率输出级，以及驱动功率输出级并与振荡系统同步的发电机。 发生器包括产生振荡系统的基本频率的两倍的脉冲序列的振荡器和修改振荡器的脉冲序列的转换器，使得馈送到功率级的每个第二脉冲具有相同的极性。 来自振荡系统的反馈应用于振荡器的输入以使振荡器与振荡系统同步。

公开(公告)号：US4307964A

公开(公告)日：1981-12-29

申请号：US238191

申请日：1981-02-25

Applicant: James E. Dudgeon ,  Donald A. Stanley

Inventor： James E. Dudgeon ,  Donald A. Stanley

IPC: B01D1/18 ,  B01D51/08 ,  B01D59/00 ,  B01J19/10 ,  B06B1/02 ,  F23C99/00 ,  F28F13/10

CPC classification number: F23C99/003 ,  B01D1/18 ,  B01D51/08 ,  B01D59/00 ,  B01J19/10 ,  B06B1/0253 ,  F28F13/10 ,  B06B2201/70 ,  Y10T307/773

Abstract: A sonic agglomeration system wherein high sound intensity and resonance are maintained with a low power input. These functions are attained through the use of a chamber feed-horn design that promotes resonance and maximized the efficiency of sound transfer between a sound producing compression driver and a resonant chamber. A digital controller maintains efficient resonance in the chamber and an efficient agglomeration rate constant by making adjustments in the frequency, sound amplitude and nuclei injection rate of the system.

Abstract translation: 声波聚集系统，其中以低功率输入保持高声强度和谐振。 这些功能通过使用促进共振并且最大化产生声音的压缩驱动器和谐振室之间的声音传递的效率的室馈电喇叭设计来实现。 数字控制器通过对系统的频率，声振幅和核注入速率进行调整，在室中保持有效的共振，并且有效的聚集速率恒定。