Apparatus and Methods of Tuning and Amplifying Piezoelectric Sonic and Ultrasonic Outputs
    161.
    发明申请
    Apparatus and Methods of Tuning and Amplifying Piezoelectric Sonic and Ultrasonic Outputs 有权
    调谐和放大压电声波和超声波输出的装置和方法

    公开(公告)号:US20140029386A1

    公开(公告)日:2014-01-30

    申请号:US13851336

    申请日:2013-03-27

    Inventor: George Whitaker

    Abstract: An apparatus and method associated with amplifying piezoelectric sonic and ultrasonic outputs is presented which provides high power output from piezoelectric devices, especially at high ultrasonic frequencies, in open air, which mitigates or eliminates overheating of the piezoelectric devices when stimulated at or near their peak outputs for extended periods. In addition, the invention provides a means of amplifying a piezoelectric sonic and ultrasonic device if a desired output power exceeds a normal maximum capability of the piezoelectric device.

    Abstract translation: 提出了一种与放大压电声波和超声波输出相关联的装置和方法,其提供来自压电装置的高功率输出,特别是在高空气中的高超声波频率下,其在峰值输出处或其附近受到刺激时减轻或消除压电装置的过热 长时间 此外,本发明提供一种如果所需的输出功率超过压电器件的正常最大容量,则可以放大压电声波和超声波装置。

    Multi-level transmitter circuit having substantially constant impedance output
    163.
    发明授权
    Multi-level transmitter circuit having substantially constant impedance output 有权
    具有基本上恒定的阻抗输出的多电平发射机电路

    公开(公告)号:US08193839B2

    公开(公告)日:2012-06-05

    申请号:US12786331

    申请日:2010-05-24

    Abstract: A multi-level transmitter circuit with substantially constant output impedance has a capacitive transducer connected between a voltage input and ground. A first voltage path connects the voltage input to a first positive voltage source. The first voltage path is controlled by a first control signal. A second voltage path connects the voltage input to a second positive voltage source, less than the first positive voltage source. The second voltage path passes through a diode and is controlled by a second control signal. A third voltage path connects the voltage input to a third voltage source, less than ground, and is controlled by the second control signal. The impedance at the voltage input during the first control signal is substantially the same as the impedance at the voltage input during the second control signal.

    Abstract translation: 具有基本上恒定的输出阻抗的多电平发射机电路具有连接在电压输入和地之间的电容式换能器。 第一电压路径将电压输入连接到第一正电压源。 第一电压路径由第一控制信号控制。 第二电压路径将电压输入连接到第二正电压源,小于第一正电压源。 第二电压路径通过二极管并由第二控制信号控制。 第三电压路径将电压输入连接到小于地的第三电压源,并由第二控制信号控制。 第一控制信号期间的电压输入端的阻抗与第二控制信号期间的电压输入处的阻抗基本相同。

    ULTRASONIC TRANSDUCER DRIVING CIRCUIT AND ULTRASONIC DIAGNOSTIC APPARATUS
    164.
    发明申请
    ULTRASONIC TRANSDUCER DRIVING CIRCUIT AND ULTRASONIC DIAGNOSTIC APPARATUS 失效
    超声波传感器驱动电路及超声波诊断装置

    公开(公告)号:US20080066552A1

    公开(公告)日:2008-03-20

    申请号:US11854903

    申请日:2007-09-13

    Inventor: Shinichi Amemiya

    Abstract: With the aim of suppressing power consumption and reducing circuit size, a positive FET is turned on in accordance with a positive pulse signal and turned off when a return voltage rises up to a positive threshold. An active ground clamp circuit causes the output line to return to the ground voltage after the elapse of a predetermined period of time. A negative FET is turned on in accordance with a negative pulse signal and turned off when the return voltage falls down to a negative threshold. The active ground clamp circuit causes the output line to return to the ground voltage after the elapse of a predetermined period of time.

    Abstract translation: 为了抑制功耗并减小电路尺寸,正极FET根据正脉冲信号导通,当返回电压上升到正阈值时,正极被截止。 有源接地钳位电路在经过预定时间段之后使输出线返回接地电压。 负FET根据负脉冲信号导通,当返回电压下降到负阈值时,负FET截止。 有源接地钳位电路在经过预定的时间后,使输出线返回接地电压。

    Device for driving vibration source
    165.
    发明授权
    Device for driving vibration source 失效
    振动源驱动装置

    公开(公告)号:US07301094B1

    公开(公告)日:2007-11-27

    申请号:US10110871

    申请日:2000-10-23

    Abstract: A vibration source driving device that realizes various vibration functions on portable telephones. The vibration source driving device includes a sound source for generating musical tone signals in response to music data. A vibration source to generate vibration, a driver to drive the vibration and a control circuit are further included such that the vibration source may be driven in synchronization with the rhythm signal within the music data.

    Abstract translation: 振动源驱动装置,其实现便携式电话上的各种振动功能。 振动源驱动装置包括用于响应于音乐数据产生乐音信号的声源。 进一步包括产生振动的振动源,用于驱动振动的驱动器和控制电路,使得可以与音乐数据内的节奏信号同步地驱动振动源。

    Vibration source driving device
    166.
    发明授权
    Vibration source driving device 有权
    振动源驱动装置

    公开(公告)号:US07253350B2

    公开(公告)日:2007-08-07

    申请号:US10941264

    申请日:2004-09-15

    Abstract: A vibration source driving device that realizes various vibration functions on portable telephones. The vibration source driving device includes a sound source for generating musical tone signals in response to music data. A vibration source to generate vibration, a driver to drive the vibration and a control circuit are further included such that the vibration source may be driven in synchronization with the rhythm signal within the music data.

    Abstract translation: 振动源驱动装置,其实现便携式电话上的各种振动功能。 振动源驱动装置包括用于响应于音乐数据产生乐音信号的声源。 进一步包括产生振动的振动源,用于驱动振动的驱动器和控制电路,使得可以与音乐数据内的节奏信号同步地驱动振动源。

    Warning tone transmitter
    167.
    发明授权
    Warning tone transmitter 有权
    警示音发射机

    公开(公告)号:US06774537B2

    公开(公告)日:2004-08-10

    申请号:US10260842

    申请日:2002-09-30

    CPC classification number: B06B1/0261 B06B2201/55 B06B2201/70

    Abstract: The warning tone transmitter (10) according to the invention has a piezoelectric horn element (12) with two input connectors (29, 30) for the application of the supply voltage at a determined frequency and has a circuit arrangement (14) fed from the current supply, which generates the supply voltage. In order to be able to receive confirmation that the horn signal is actually generated by the warning tone transmitter (10) and in order to be able more easily to calibrate the warning tone transmitter (10) such that it is driven at its resonant frequency the piezoelectric horn element (12) has an additional output connector (34), which, when the horn element (12) is fed with the supply voltage, generates an answering signal taken to the circuit arrangement (14) if the piezoelement is actually oscillating. The magnitude of the answering signal is a value for the sound volume of the warning tone transmitter (10).

    Abstract translation: 根据本发明的警告音发射机(10)具有压电喇叭元件(12),其具有用于以确定的频率施加电源电压的两个输入连接器(29,30),并具有从 电流供应,产生电源电压。 为了能够接收由警报音发送器(10)实际产生喇叭信号的确认,并且为了能够更容易地校准警告音发送器(10),使得其以其谐振频率被驱动, 压电喇叭元件(12)具有附加的输出连接器(34),当所述喇叭元件(12)馈送电源电压时,如果所述压电元件实际上是振荡的,则生成应答信号到所述电路装置(14)。 应答信号的大小是警告音发送器(10)的音量的值。

    Method and apparatus for tuning a megasonic transducer
    168.
    发明授权
    Method and apparatus for tuning a megasonic transducer 有权
    用于调谐兆声换能器的方法和装置

    公开(公告)号:US06549860B1

    公开(公告)日:2003-04-15

    申请号:US09687857

    申请日:2000-10-13

    CPC classification number: B08B3/12 B06B1/0253 B06B2201/55 B06B2201/71

    Abstract: A method and apparatus for selecting an optimum frequency for driving a transducer in a megasonic cleaning system. The method comprises the steps of selecting a plurality of frequency values that span a frequency range containing an optimum frequency for driving a piezoelectric crystal, determining the reflection coefficient at each frequency value, fitting the data set to a function, obtaining the first derivative equation of the function, finding the roots of the first derivative equation to yield a set of roots, and selecting the optimum frequency from the set of roots. The reflection coefficient is defined as the reflected power divided by the forward power. The apparatus comprises a microprocessor, a frequency generator, a directional coupler/detector and an analog to digital converter circuit. Software running on the microprocessor uses a forward power signal and a reflected power signal from the analog to digital converter circuit to generate the reflection coefficient and to calculate the optimum frequency for driving the megasonic transducer.

    Abstract translation: 一种选择在兆声波清洗系统中驱动换能器的最佳频率的方法和装置。 该方法包括以下步骤:选择跨越包含用于驱动压电晶体的最佳频率的频率范围的多个频率值,确定每个频率值处的反射系数,将该数据集拟合到函数中,获得一阶导数方程 该函数找到一阶导数方程的根,以产生一组根,并从根组中选择最佳频率。 反射系数定义为反射功率除以正向功率。 该装置包括微处理器,频率发生器,定向耦合器/检测器和模数转换器电路。 在微处理器上运行的软件使用来自模数转换器电路的正向功率信号和反射功率信号来产生反射系数并计算驱动兆声换能器的最佳频率。

    Warning tone transmitter
    169.
    发明申请
    Warning tone transmitter 有权
    警示音发射机

    公开(公告)号:US20030062992A1

    公开(公告)日:2003-04-03

    申请号:US10260842

    申请日:2002-09-30

    CPC classification number: B06B1/0261 B06B2201/55 B06B2201/70

    Abstract: The warning tone transmitter (10) according to the invention has a piezoelectric horn element (12) with two input connectors (29, 30) for the application of the supply voltage at a determined frequency and has a circuit arrangement (14) fed from the current supply, which generates the supply voltage. In order to be able to receive confirmation that the horn signal is actually generated by the warning tone transmitter (10) and in order to be able more easily to calibrate the warning tone transmitter (10) such that it is driven at its resonant frequency the piezoelectric horn element (12) has an additional output connector (34), which, when the horn element (12) is fed with the supply voltage, generates an answering signal taken to the circuit arrangement (14) if the piezoelement is actually oscillating. The magnitude of the answering signal is a value for the sound volume of the warning tone transmitter (10).

    Abstract translation: 根据本发明的警告音发射机(10)具有压电喇叭元件(12),其具有用于以确定的频率施加电源电压的两个输入连接器(29,30),并具有从 电流供应,产生电源电压。 为了能够接收由警报音发送器(10)实际产生喇叭信号的确认,并且为了能够更容易地校准警告音发送器(10),使得其以其谐振频率被驱动, 压电喇叭元件(12)具有附加的输出连接器(34),当所述喇叭元件(12)馈送电源电压时,如果所述压电元件实际上是振荡的,则生成应答信号到所述电路装置(14)。 应答信号的大小是警告音发送器(10)的音量的值。

    Automatic modulation control for ESV modulators
    170.
    发明授权
    Automatic modulation control for ESV modulators 有权
    ESV调制器的自动调制控制

    公开(公告)号:US06504376B2

    公开(公告)日:2003-01-07

    申请号:US09725398

    申请日:2000-11-29

    CPC classification number: B06B1/0261 B06B2201/55 B06B2201/70

    Abstract: Method and apparatus for modulating the vibrations of an object with a constant amplitude has a sensor, e.g., a piezoelectric transducer, for sensing the vibrations. A light source, e.g., an LED, receives the sensed signal and illuminates a light dependent resistor (LED) In turn, a control circuit controls the vibration amplitude in accordance with the LDR resistance. A full wave bridge rectifier can be used between the sensor and the LED.

    Abstract translation: 用于以恒定幅度调制物体的振动的方法和装置具有用于感测振动的传感器,例如压电换能器。 光源(例如LED)接收感测到的信号并照亮光依赖电阻(LED)。控制电路又根据LDR电阻来控制振幅。 可以在传感器和LED之间使用全波桥式整流器。

Patent Agency Ranking