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公开(公告)号：US09739684B2
公开(公告)日：2017-08-22
申请号：US14430390
申请日：2013-09-06
Applicant: NEC Corporation
Inventor： Shigeki Shinoda , Tetsuya Yoshinari , Shohei Kinoshita , Hiromi Yamamoto , Masatake Takahashi , Yasuhiro Sasaki
Abstract: A signal acquisition unit (2020) acquires a signal. From the signal acquired by the signal acquisition unit (2020), a detection signal extraction unit (2060) extracts, as a detection signal, a signal of any frequency band among a plurality of partial detection frequency bands into which the frequency band that is the subject of detection has been divided. A determination unit (2070) determines, in order, for each detection signal corresponding to each of the different partial detection frequency bands, whether the detection signal shows any leakage, and if at least a prescribed number of the detection signals are not showing any leakage, determines that leakage is not taking place.
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公开(公告)号：US20150211953A1
公开(公告)日：2015-07-30
申请号：US14430390
申请日：2013-09-06
Applicant: NEC CORPORATION
Inventor： Shigeki Shinoda , Tetsuya Yoshinari , Shohei Kinoshita , Hiromi Yamamoto , Masatake Takahashi , Yasuhiro Sasaki
IPC: G01M3/16
Abstract: A signal acquisition unit (2020) acquires a signal. From the signal acquired by the signal acquisition unit (2020), a detection signal extraction unit (2060) extracts, as a detection signal, a signal of any frequency band among a plurality of partial detection frequency bands into which the frequency band that is the subject of detection has been divided. A determination unit (2070) determines, in order, for each detection signal corresponding to each of the different partial detection frequency bands, whether the detection signal shows any leakage, and if at least a prescribed number of the detection signals are not showing any leakage, determines that leakage is not taking place.
Abstract translation: 信号获取单元（2020）获取信号。 从信号获取单元（2020）获取的信号中，检测信号提取单元（2060）将作为检测信号的频带的多个部分检测频带中的任何频带的信号提取出来， 检测对象已被划分。 确定单元（2070）按顺序确定与每个不同的部分检测频带相对应的每个检测信号，检测信号是否显示任何泄漏，并且如果至少规定数量的检测信号没有显示任何泄漏 ，确定不会发生泄漏。
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公开(公告)号：US09772251B2
公开(公告)日：2017-09-26
申请号：US14780126
申请日：2014-03-20
Applicant: NEC Corporation
Inventor： Shigeki Shinoda , Yasuhiro Sasaki , Masatake Takahashi , Shohei Kinoshita , Hiromi Yamamoto
Abstract: A vibration detection device (10) is provided with a vibration detection unit (110), a sensor-side leak determination unit (120), a first transmission unit (130), and a second transmission unit (140). The vibration detection unit (110) detects vibration transmitted through piping (30). The sensor-side leak determination unit (120) determines whether or not there is a possibility of a leak in the piping (30) based on a measurement result of the vibration detection unit (110). When the sensor-side leak determination unit (120) determines that there is a possibility of a leak, the first transmission unit (130) transmits provisional leak information to an information processing device (20). The provisional leak information indicates that there is a possibility of a leak in the piping (30). When waveform request information indicating a request for waveform data of the vibration is received from the information processing device (20), the second transmission unit (140) transmits waveform data measured by the vibration detection unit (110) to the information processing device (20).
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