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    • 1. 发明申请
    • METHOD AND APPARATUS FOR DETECTING THE POSITION OF A PISTON OF A PISTON CYLINDER THROUGH THE USE OF MICROWAVES
    • 通过使用微波检测活塞式气瓶活塞位置的方法和装置
    • US20120316828A1
    • 2012-12-13
    • US13535579
    • 2012-06-28
    • Josef BuechlerSorin FericeanAlbert DorneichMarkus Fritton
    • Josef BuechlerSorin FericeanAlbert DorneichMarkus Fritton
    • G01B7/14G06F19/00
    • F15B15/2869G01S13/36G01S13/88
    • A method for detecting the position of a piston of a piston cylinder is provided. A microwave transmit signal is emitted in the direction of the piston and microwaves reflected from the piston are detected. The transmit signal comprises a modulated signal with a base frequency sinusoidally modulated at a modulation frequency. An evaluation of the phase between transmit signals and receive signals is performed. A phase determination at the baseband and a simultaneous phase determination at at least one sideband are also performed. The phase determination at the baseband is used for fine determination of the piston position and the phase determination at the at least one sideband is used for coarse determination of the piston position. Bandpass filtering on receive signals and evaluation transmit signals is performed with respect to the base frequency or an intermediate frequency. Bandpass filtering is performed with respect to the modulation frequency.
    • 提供了一种用于检测活塞气缸活塞位置的方法。 在活塞的方向上发射微波发射信号,并检测从活塞反射的微波。 发射信号包括具有以调制频率正弦调制的基频的调制信号。 执行发送信号和接收信号之间的相位的评估。 还执行基带处的相位确定和在至少一个边带处的同时相位确定。 在基带处的相位确定用于精确确定活塞位置,并且在至少一个边带处的相位确定被用于粗略地确定活塞位置。 对基准频率或中频执行对接收信号和评估发射信号的带通滤波。 对调制频率进行带通滤波。
    • 2. 发明授权
    • Non-contact proximity switch and method for programming it
    • 非接触式接近开关及其编程方法
    • US5818129A
    • 1998-10-06
    • US685714
    • 1996-07-24
    • Sorin FericeanErnst Gass
    • Sorin FericeanErnst Gass
    • H03K17/945H03K17/95H01H36/00
    • H03K17/9547H03K17/945H03K17/9502H03K2217/94021Y10T307/766Y10T307/773
    • In order to improve a non-contact proximity switch, and a method for programming it, with an resonant circuit that can be influenced by objects approaching from outside and an evaluation circuit to generate an output signal as a function of an output voltage of the resonant circuit that exceeds a predefined threshold value, and with standard terminals, in such a way that the proximity switch can be used at different temperatures and operates accurately independently of the ambient temperature and independently of other trouble influences, it is proposed that a temperature sensor be arranged in the vicinity of the resonant circuit; and that a compensation circuit comprise a circuit unit, downstream from the temperature sensor, which outputs a compensation quantity, dependent on the sensed temperature, that is delivered to a comparator to be compared with the output voltage of the oscillator circuit and, when identity exists, to enable the output signal; and that the compensation magnitude for compensating for the temperature dependence and for other influences be capable of being repeatedly modified in temperature-dependent fashion from outside using the "teach-in" method by means of an external programming device that can be connected to the standard terminals of the proximity switch, and stored, with the proximity switch in its completely assembled state.
    • 为了改善非接触式接近开关及其编程方法,具有能够受到外部物体接近的物体的影响的谐振电路和评估电路,以产生作为谐振的输出电压的函数的输出信号 电路超过预定义的阈值,并且具有标准端子,使得接近开关可以在不同的温度下使用,并且独立于环境温度进行精确的操作,并且独立于其它故障影响,建议将温度传感器 布置在谐振电路附近; 并且补偿电路包括在温度传感器的下游的电路单元,其根据所感测的温度输出补偿量,该补偿量被传送到比较器以与振荡器电路的输出电压进行比较,并且当存在身份时 ,使能输出信号; 并且用于补偿温度依赖性和其它影响的补偿幅度能够通过使用可以连接到标准的外部编程装置的“教导”方法从外部以温度依赖的方式重复修改 接近开关的端子并存储,其中接近开关处于其完全组装状态。
    • 9. 发明授权
    • Inductive sensor responsive to the distance to a conductive or
magnetizable object
    • 感应传感器响应于到导电或可磁化物体的距离
    • US5504425A
    • 1996-04-02
    • US248056
    • 1994-05-24
    • Sorin FericeanMichael FriedrichErnst Gass
    • Sorin FericeanMichael FriedrichErnst Gass
    • G01B7/00G01B7/14G01V3/10G01V3/11H03B5/08
    • G01V3/102
    • In order to improve a sensor for detecting an electrically conductive or netizable object with an oscillator comprising a resonant circuit including an inductance and a capacitance, the resonant circuit impedance depending on a damping distance between the inductance and the object and rising steeply in the range of small damping distances, further rising less steeply in the range of medium damping distances and substantially having a constant value in the range of large damping distances, and a closed adaptive loop stage supplying a loop current for the resonant circuit and generating a course of an amplitude value dependent on the damping distance, and an evaluation circuit detecting an oscillator voltage applied to the resonant circuit, such that the oscillator also oscillates in the range of small damping distances and has a characteristic curve, with which the oscillator voltage varies with the damping distance also in the range of small damping distances, it is suggested that the course of the amplitude value of the loop current in the range of small damping distances has at least one oscillation-maintaining segment, the gradient of which is smaller than the gradient of the course of the amplitude value in the range of medium damping distances.
    • 为了改进用于使用包括电感和电容的谐振电路的振荡器来检测导电或可磁化物体的传感器,谐振电路阻抗取决于电感和物体之间的阻尼距离,并且在 较小的阻尼距离,在中等阻尼距离的范围内进一步上升,并且在大的阻尼距离的范围内基本上具有恒定的值,以及为谐振电路提供环路电流并产生幅度的过程的闭合的自适应环路级 取决于阻尼距离的值,以及评估电路,检测施加到谐振电路的振荡器电压,使得振荡器也在小阻尼距离的范围内振荡,并具有特性曲线,振荡器电压随阻尼距离变化 也在小阻尼距离的范围内,建议 在小阻尼距离的范围内的环路电流的振幅值的过程具有至少一个振荡维持段,其梯度小于中等阻尼距离范围内振幅值的梯度的梯度。