JPH01111368U - - Google Patents

Info

Publication number
JPH01111368U
JPH01111368U JP310888U JP310888U JPH01111368U JP H01111368 U JPH01111368 U JP H01111368U JP 310888 U JP310888 U JP 310888U JP 310888 U JP310888 U JP 310888U JP H01111368 U JPH01111368 U JP H01111368U
Authority
JP
Japan
Prior art keywords
sound
output signal
striking
counting
threshold value
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP310888U
Other languages
English (en)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP310888U priority Critical patent/JPH01111368U/ja
Publication of JPH01111368U publication Critical patent/JPH01111368U/ja
Pending legal-status Critical Current

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  • Percussive Tools And Related Accessories (AREA)

Description

【図面の簡単な説明】
第１図は、この考案の一実施例である打撃工具
の打撃数測定装置の構成を示すブロツク図、第２
図は、打撃工具の打撃音の変化を示すグラフであ
る。 図中、１はマイクロホン、２は増幅回路、３は
フイルタ回路、４は平滑化回路、５はパルス発生
回路、６はカウンタ回路である。

Claims (1)

  1. 【実用新案登録請求の範囲】 (1) 音検出手段と、該音検出手段の出力信号を
    しきい値と比較して打撃音を判別する判別手段と
    、前記打撃音を基準時間計数する計数手段とを備
    えた打撃工具の打撃数測定装置。 (2) 音検出手段の出力信号を平滑化してしきい
    値とするしきい値設定手段を備えたことを特徴と
    する請求項(1)記載の打撃工具の打撃数測定装置
    。
JP310888U 1988-01-14 1988-01-14 Pending JPH01111368U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP310888U JPH01111368U (ja) 1988-01-14 1988-01-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP310888U JPH01111368U (ja) 1988-01-14 1988-01-14

Publications (1)

Publication Number Publication Date
JPH01111368U true JPH01111368U (ja) 1989-07-27

Family

ID=31204452

Family Applications (1)

Application Number Title Priority Date Filing Date
JP310888U Pending JPH01111368U (ja) 1988-01-14 1988-01-14

Country Status (1)

Country Link
JP (1) JPH01111368U (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012125872A (ja) * 2010-12-15 2012-07-05 Ud Trucks Corp 自動ハンマーの制御装置
US11207763B2 (en) 2017-08-29 2021-12-28 Panasonic Intellectual Property Management Co., Ltd. Signal processing apparatus for tool comprising rotating body rotated by impacts delivered from drive apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5264973A (en) * 1975-11-22 1977-05-28 Obayashi Gumi Kk Method of recording pile driving numbers for pile driver

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5264973A (en) * 1975-11-22 1977-05-28 Obayashi Gumi Kk Method of recording pile driving numbers for pile driver

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012125872A (ja) * 2010-12-15 2012-07-05 Ud Trucks Corp 自動ハンマーの制御装置
US11207763B2 (en) 2017-08-29 2021-12-28 Panasonic Intellectual Property Management Co., Ltd. Signal processing apparatus for tool comprising rotating body rotated by impacts delivered from drive apparatus

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