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公开(公告)号：US4016862A
公开(公告)日：1977-04-12
申请号：US587385
申请日：1975-06-16
CPC分类号： G01S7/52058 , G01N29/40 , G01S7/52033 , Y10S73/90
摘要： An echoscope for examination of objects with the aid of ultrasonic pulses, comprising at least one electroacoustic element for transmitting and receiving ultrasonic pulses during a transmission-reception period divided into n consecutive time intervals. The ultrasonic pulses are sent to the objects to be examined and are reflected therefrom. The echo signals supplied by the receiving element are amplified by an amplifier with time-dependent gain control. The gain control is brought about by a control voltage generator which supplies a control voltage to said amplifier for determining its signal gain as a function of time. Adjusting means for the control voltage generator are provided to make it possible to change the magnitude of the control voltage in the time intervals as a function of time. The apparatus also comprises a device for visually displaying the echo signals received during each transmission-reception period.
摘要翻译： 一种用于通过超声波脉冲检查物体的回波仪，包括至少一个电声元件，用于在被分成n个连续时间间隔的发射 - 接收时段期间发送和接收超声波脉冲。 超声波脉冲被发送到被检查物体并被反射。 由接收元件提供的回波信号由具有随时间增益控制的放大器放大。 增益控制由控制电压发生器产生，该控制电压发生器向所述放大器提供控制电压，以确定其作为时间的函数的信号增益。 提供了用于控制电压发生器的调节装置，以便可以随时间变化在时间间隔内改变控制电压的大小。 该装置还包括用于可视地显示在每个发送 - 接收周期期间接收的回波信号的装置。
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公开(公告)号：US4140107A
公开(公告)日：1979-02-20
申请号：US767781
申请日：1977-02-11
CPC分类号： G01S7/52058 , G01N29/40 , G01S7/52033 , Y10S73/90
摘要： An echoscope for examination of objects with the aid of an ultrasound beam, comprising at least one electro-acoustic element for transmitting and receiving ultrasonic pulses during a transmission-reception period divided into n consecutive time intervals. The ultrasonic pulses are sent to the objects to be examined and are reflected therefrom. The echo signals supplied by the receiving element are amplified by an amplifier with time-dependent gain control. The gain control is brought about by a control voltage generator which supplies a control voltage to said amplifier for determining its signal gain as a function of time. Adjusting means for the control voltage generator are provided to make it possible to change the magnitude of the control voltage in the time intervals as a function of time. The apparatus also comprises a device for visually displaying the echo signals received during each transmission-reception period.
摘要翻译： 一种用于通过超声波束检查物体的回波仪，包括至少一个电声元件，用于在被分成n个连续的时间间隔的发射 - 接收时段期间发送和接收超声波脉冲。 超声波脉冲被发送到被检查物体并被反射。 由接收元件提供的回波信号由具有随时间增益控制的放大器放大。 增益控制由控制电压发生器产生，该控制电压发生器向所述放大器提供控制电压，以确定其作为时间的函数的信号增益。 提供了用于控制电压发生器的调节装置，以便可以随时间变化在时间间隔内改变控制电压的大小。 该装置还包括用于可视地显示在每个发送 - 接收周期期间接收的回波信号的装置。
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