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公开(公告)号：EP0101998B1
公开(公告)日：1988-01-27
申请号：EP83107864.7
申请日：1983-08-09
IPC分类号： G01F23/26
CPC分类号： G01F23/0069 , G01F23/20
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公开(公告)号：EP0342612B1
公开(公告)日：1992-07-15
申请号：EP89108786.8
申请日：1989-05-16
发明人： Kobayashi, Hiroshi
CPC分类号： G01F1/69 , G01F1/6842
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公开(公告)号：EP0394940A3
公开(公告)日：1991-01-16
申请号：EP90107699.2
申请日：1990-04-24
IPC分类号： G01S15/60
CPC分类号： G01S15/60
摘要： An ultrasonic ground speedometer utilizing Doppler effect comprises an ultrasonic transmitter (2) for outputting an ultrasonic wave at a predetermined angle (ϑ) against a road surface, an ultrasonic receiver (6) for receiving a reflected ultrasonic wave caused by reflection of the output ultrasonic wave from a road surface, an arithmetic circuit (12) for deriving ground speed from Doppler shift between the output ultrasonic wave and the reflected ultrasonic wave. The ultrasonic ground speedometer also includes an output frequency control circuit (13) for controlling the output ultrasonic wave frequency in such a manner as to keep the reflected ultrasonic wave frequency to a constant value in response to changes in ground speed. An amplification degree control circuit (14) also included for controlling the amplitude of the output ultrasonic wave to keep a substantially constant output intensity of the output ultrasonic wave over an output ultrasonic wave frequency range controlled bythe output frequency control circuit.
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公开(公告)号：EP0395000A3
公开(公告)日：1991-01-16
申请号：EP90107838.6
申请日：1990-04-25
IPC分类号： G01S15/60
CPC分类号： G01S15/60
摘要： An ultrasonic ground speedometer utilizing Doppler effect comprises an ultrasonic transmitter (1,2,3) for outputting an ultrasonic wave (4) having a particular wavelength (ϑ) at a predetermined angle against a road surface (5), an ultrasonic receiver (6,7,8) for receiving a reflected ultrasonic wave caused by reflection of the output ultrasonic wave from the road surface, and a signal processor (10,11,12) for deriving ground speed from Doppler shift between the output ultrasonic wave and the reflected ultrasonic wave. The particular wavelength is set to a value within a range of 2.6 mm through 3.4 mm to assure the highest possible S/N ratio for the Doppler shift signal obtained from the signal processor.
摘要翻译： 一种利用多普勒效应的超声波地面速度计包括：超声波发射器（1,2,3），用于以预定角度向路面（5）输出具有特定波长（θ）的超声波（4）;超声波接收器 ，7,8），用于接收由来自路面的输出超声波的反射引起的反射超声波;以及信号处理器（10,11,12），用于从输出超声波与反射之间的多普勒频移导出地速 超声波。 将特定波长设定在2.6mm至3.4mm范围内的值以确保从信号处理器获得的多普勒频移信号具有最高可能的S / N比。
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6.发明公开Ultrasonic ground speedometer utilizing doppler effect 失效Ultraschallgerätzur Geschwindigkeitsmessunggegenüberdem Boden mittels Doppler-Effektes。
公开(公告)号：EP0395000A2
公开(公告)日：1990-10-31
申请号：EP90107838.6
申请日：1990-04-25
IPC分类号： G01S15/60
CPC分类号： G01S15/60
摘要： An ultrasonic ground speedometer utilizing Doppler effect comprises an ultrasonic transmitter (1,2,3) for outputting an ultrasonic wave (4) having a particular wavelength (ϑ) at a predetermined angle against a road surface (5), an ultrasonic receiver (6,7,8) for receiving a reflected ultrasonic wave caused by reflection of the output ultrasonic wave from the road surface, and a signal processor (10,11,12) for deriving ground speed from Doppler shift between the output ultrasonic wave and the reflected ultrasonic wave. The particular wavelength is set to a value within a range of 2.6 mm through 3.4 mm to assure the highest possible S/N ratio for the Doppler shift signal obtained from the signal processor.
摘要翻译： 一种利用多普勒效应的超声波地面速度计包括超声波发射器（1,2,3），用于输出具有特定波长（θ）的超声波（4），所述超声波（4）以相对于路面（5）的预定角度输出，超声波接收器 ，7,8），用于接收来自所述路面的所述输出超声波的反射引起的反射超声波;以及信号处理器（10,11,12），用于从所述输出超声波与所述反射的多普勒频移导出地面速度 超声波。 将特定波长设定在2.6mm至3.4mm的范围内的值，以确保从信号处理器获得的多普勒频移信号的最高可能的S / N比。
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7.发明公开Ultrasonic ground speedometer utilizing doppler effect 失效Ultraschallgerätzur Geschwindigkeitsmessunggegenüberdem Boden mittels des Doppler-Effektes。
公开(公告)号：EP0394940A2
公开(公告)日：1990-10-31
申请号：EP90107699.2
申请日：1990-04-24
IPC分类号： G01S15/60
CPC分类号： G01S15/60
摘要： An ultrasonic ground speedometer utilizing Doppler effect comprises an ultrasonic transmitter (2) for outputting an ultrasonic wave at a predetermined angle (ϑ) against a road surface, an ultrasonic receiver (6) for receiving a reflected ultrasonic wave caused by reflection of the output ultrasonic wave from a road surface, an arithmetic circuit (12) for deriving ground speed from Doppler shift between the output ultrasonic wave and the reflected ultrasonic wave. The ultrasonic ground speedometer also includes an output frequency control circuit (13) for controlling the output ultrasonic wave frequency in such a manner as to keep the reflected ultrasonic wave frequency to a constant value in response to changes in ground speed. An amplification degree control circuit (14) also included for controlling the amplitude of the output ultrasonic wave to keep a substantially constant output intensity of the output ultrasonic wave over an output ultrasonic wave frequency range controlled bythe output frequency control circuit.
摘要翻译： 利用多普勒效应的超声波地面速度计包括：超声波发射器（2），用于以相对于路面的预定角度（θ）输出超声波;超声波接收器（6），用于接收由输出超声波的反射引起的反射超声波 来自路面的波形，用于从输出超声波和反射超声波之间的多普勒频移导出地面速度的算术电路（12）。 超声波地面速度计还包括输出频率控制电路（13），用于响应于地面速度的变化，将反射的超声波频率保持在恒定值，以控制输出超声波频率。 还包括用于控制输出超声波的振幅的放大度控制电路（14），以在由输出频率控制电路控制的输出超声波频率范围内保持输出超声波的输出强度基本恒定。
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公开(公告)号：EP0342612A1
公开(公告)日：1989-11-23
申请号：EP89108786.8
申请日：1989-05-16
发明人： Kobayashi, Hiroshi
CPC分类号： G01F1/69 , G01F1/6842
摘要： A flow rate sensor is provided. This sensor includes a flow rate detecting element (1). The flow rate detecting element (1) is provided within a flow passage (10) so as to expose the flow rate of a medium whether at the center of the passageway or at the inner surfaces of the passage wall. The flow rate detecting element has a plurality of openings (1a) for allowing the medium to pass therethrough without pressure loss. Thus, the flow rate sensor may precisely detect the flow rate of a medium flowing within the passage regardless of insecurity in the flow distribution of the medium.
摘要翻译： 提供流量传感器。 该传感器包括流量检测元件（1）。 流量检测元件（1）设置在流路（10）内，以便在通道的中心处或在通道壁的内表面处暴露介质的流量。 流量检测元件具有用于允许介质通过而没有压力损失的多个开口（1a）。 因此，流量传感器可以精确地检测在通道内流动的介质的流量，而不管介质的流量分布如何不安全。
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公开(公告)号：EP0136697A3
公开(公告)日：1987-03-25
申请号：EP84111770
申请日：1984-10-02
IPC分类号： G01S07/52
CPC分类号： G01S7/52004 , G01S2007/52009 , G01S2007/52012
摘要： An ultrasonic vehicle rangefinder having a detecting system for discriminating whether trouble is in transmission or reception side is shown. The discrimination is established by detection of an attenuation vibration at a transmission microphone.
摘要翻译： 示出了具有用于鉴别故障在发送侧或接收侧的检测系统的超声波车辆测距仪。 通过检测传输麦克风的衰减振动来确定辨别。
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公开(公告)号：EP0080632B1
公开(公告)日：1986-02-19
申请号：EP82110482.5
申请日：1982-11-12
CPC分类号： G01N33/2888 , F01M11/10 , G01N27/22 , G01R27/2605
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