Title:
DEVICE, METHOD, AND PROGRAM FOR DETERMINING ARRIVAL TO SUPPORT LAYER
Document Type and Number:
Japanese Patent JP2017223000
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide highly reliable device, method, and program for determining arrival to support layer.SOLUTION: Device 1 for determining arrival to a support layer is a determination device of arrival to a support layer, and includes an A/D converter 20 that converts an analogue current value iof an electric motor that rotates and drives an excavator for excavating a ground and outputs a digital current value, and a controller 4 having low-pass filter means for removing a noise from the digital current value and outputting a corrected current value. The device for determining arrival to support layer outputs a signal indicating arrival to the support layer, based on a time width when the corrected current value reaches or exceeds a preset current threshold value.SELECTED DRAWING: Figure 1
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Inventors:
SUZUKI KOJI
SUZUKI MIKA
SUZUKI MIKA
Application Number:
JP2016117458A
Publication Date:
December 21, 2017
Filing Date:
June 13, 2016
Export Citation:
Assignee:
SLAB CORP
International Classes:
E02D1/00
Domestic Patent References:
JP2000160550A | 2000-06-13 | |||
JPH08135362A | 1996-05-28 | |||
JPH05218876A | 1993-08-27 |
Foreign References:
US5726349A | 1998-03-10 |
Attorney, Agent or Firm:
Tomohiro Sakamoto
Yanagimoto Hachidai
Ayumi Yada
Toshihiro Oishi
Yanagimoto Hachidai
Ayumi Yada
Toshihiro Oishi
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