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公开(公告)号：US06364028B1
公开(公告)日：2002-04-02
申请号：US09718762
申请日：2000-11-22
IPC分类号： A01B4106
CPC分类号： E02F3/847 , G01S2007/52014
摘要： A control system for establishing grade and elevation control for a tool of a construction apparatus for maintaining the vertical position of the tool relative to a reference includes a first ultrasonic transducer configured to be carried by the construction apparatus, with the first transducer transmitting and receiving acoustic waves, at least one reflector, a second ultrasonic transducer configured to be carried by the construction apparatus, with the second transducer receiving acoustic waves, and a controller coupled to the first and second ultrasonic transducers which drive the transducers to produce an acoustic wave and monitors the time reflections of the acoustic wave are respectively received by the first and second transducers. The controller determines the local speed of sound based on a first in time reflection received by the second ultrasonic transducer and determines the distance from the construction tool to a reference based on the local speed of sound and a second in time reflection received by both the first and second ultrasonic transducers. The controller produces at least one electrical signal as a function of the distance of the ultrasonic transducers from the reference. In preferred form, the controller communicates the signal to a positioning device, which signal actuates the positioning device to adjust the position of the construction tool with respect to the reference.
摘要翻译： 一种用于建立用于工具的工具的坡度和仰角控制的控制系统，用于维持工具相对于基准的垂直位置，包括构造成由施工设备承载的第一超声换能器，第一换能器发送和接收声学 波形，至少一个反射器，构造成由施工设备承载的第二超声波换能器，第二换能器接收声波，以及耦合到第一和第二超声换能器的控制器，其驱动换能器以产生声波和监视器 声波的时间反射分别由第一和第二换能器接收。 控制器基于由第二超声波换能器接收到的第一时间反射来确定本地的声速，并且基于本地的声速和基于时间反射的第二时间反射确定从施工工具到参考的距离， 和第二超声换能器。 控制器产生至少一个电信号作为超声波换能器与基准距离的函数。 在优选形式中，控制器将信号传送到定位装置，该信号致动定位装置以调整施工工具相对于基准的位置。
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公开(公告)号：US6152238A
公开(公告)日：2000-11-28
申请号：US159255
申请日：1998-09-23
CPC分类号： E02F3/847 , G01S2007/52014
摘要： A control system for establishing grade and elevation control for a tool of a construction apparatus for maintaining the vertical position of the tool relative to a reference includes a first ultrasonic transducer configured to be carried by the construction apparatus, with the first transducer transmitting and receiving acoustic waves, at least one reflector, a second ultrasonic transducer configured to be carried by the construction apparatus, with the second transducer receiving acoustic waves, and a controller coupled to the first and second ultrasonic transducers which drive the transducers to produce an acoustic wave and monitors the time reflections of the acoustic wave are respectively received by the first and second transducers. The controller determines the local speed of sound based on a first in time reflection received by the second ultrasonic transducer and determines the distance from the construction tool to a reference based on the local speed of sound and a second in time reflection received by both the first and second ultrasonic transducers. The controller produces at least one electrical signal as a function of the distance of the ultrasonic transducers from the reference. In preferred form, the controller communicates the signal to a positioning device, which signal actuates the positioning device to adjust the position of the construction tool with respect to the reference.
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