US 12,332,112 B2
Diagnostic device, computer program, and diagnostic system
Hiroaki Fukuda, Kanagawa (JP); Yasunobu Shirata, Tokyo (JP); Yohsuke Muramoto, Kanagawa (JP); and Junichi Takami, Kanagawa (JP)
Assigned to Ricoh Company, Ltd., Tokyo (JP)
Filed by Hiroaki Fukuda, Kanagawa (JP); Yasunobu Shirata, Tokyo (JP); Yohsuke Muramoto, Kanagawa (JP); and Junichi Takami, Kanagawa (JP)
Filed on Aug. 12, 2022, as Appl. No. 17/886,786.
Application 17/886,786 is a continuation of application No. 16/061,718, granted, now 11,467,024, previously published as PCT/JP2016/088471, filed on Dec. 22, 2016.
Claims priority of application No. 2015-254041 (JP), filed on Dec. 25, 2015; and application No. 2016-217144 (JP), filed on Nov. 7, 2016.
Prior Publication US 2022/0390271 A1, Dec. 8, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G01H 3/00 (2006.01); G01H 17/00 (2006.01); G03G 15/00 (2006.01); G05B 19/4065 (2006.01); G06N 7/01 (2023.01); G06N 20/00 (2019.01); G07C 3/00 (2006.01)
CPC G01H 3/00 (2013.01) [G01H 17/00 (2013.01); G03G 15/00 (2013.01); G03G 15/55 (2013.01); G05B 19/4065 (2013.01); G06N 20/00 (2019.01); G07C 3/00 (2013.01); G03G 2215/00637 (2013.01); G05B 2219/37245 (2013.01); G05B 2219/50276 (2013.01); G06N 7/01 (2023.01)] 18 Claims
OG exemplary drawing
 
1. A diagnostic system comprising:
a diagnostic device; and
a process machine, having at least one sensor that measures at least one of acoustic data, acceleration data, or an acoustic emission, as sensing information, on which the diagnostic device performs diagnosis, wherein
the diagnostic device includes
a receiver configured to receive sensing information, from the at least one sensor of the process machine, and context information, the sensing information being information on a physical quantity that varies in accordance with an operation by the process machine, the context information including at least one of rotating speed, number of rotations and moving information of the process machine indicating a drive unit of the process machine is driving, the drive unit is included in the process machine; and
at least one processor configured to
monitor the context information;
specify an actual machining period based on both of the context information and the sensing information, the actual machining period being a period during which an amplitude of the sensing information changes to exceed a threshold set in advance and the amplitude of the sensing information falls below the threshold, the period being a period that a tool of the process machine is machining a workpiece, the tool is driven by the drive unit,
determine an abnormal state of the tool using a part of the sensing information, the part being corresponding to the specified actual machining period, and
update a model stored in a memory based on the determined abnormal state;
the process machine including:
the at least one sensor configured to detect the physical quantity, and
a transmitter configured to transmit the detected physical quantity to the diagnostic device.