SOUND SILENCING APPARATUS
PURPOSE:To reduce air pressure sound occurring at the outlet end of a tunnel by a method wherein compressional wave in the tunnel is detected by a pressure gauge, and negative pressure wave for offsetting the compressional wave is produced on a signal outputted on detection by the pressure gauge and...
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| creator | INUI MASAAKI TSUJIMOTO YOSHIKAZU OMAE YUKIO NISHIMURA MASAHARU YAMASHITA TOSHIO KOJIMA SATOSHI IMAI YUTAKA |
| description | PURPOSE:To reduce air pressure sound occurring at the outlet end of a tunnel by a method wherein compressional wave in the tunnel is detected by a pressure gauge, and negative pressure wave for offsetting the compressional wave is produced on a signal outputted on detection by the pressure gauge and operated by a control device by negative pressure producing devices provided at the outlet end of the tunnel. CONSTITUTION:A sound silencing apparatus is constructed of negative pressure producing devices 5 provided at the right and the left of the outlet end 10 of a tunnel 01, a pressure gauge 7 that detects compressional wave 9 in the tunnel 01 and outputs signals based on the detection, and a control device 6 that calculates the time of emission of the compressional wave from the outlet end 10 and controls driving signals to be sent to the negative pressure producing devices 5. The compressional wave 9 produced by a train 04 entering the tunnel is detected by the pressure gauge 7 and the signal outputted therefrom is sent to the control device 6. Then operation is made by the control device on the signal inputted thereto to calculate the time when the compressional wave is emitted from the outlet of the tunnel 01. Then an instruction is given by the signals to the negative pressure producing devices 5 for starting the operation. Thereby negative pressure wave 8 for offsetting the compressional wave 9 is produced, resulting in silencing of air pressure sound on the outlet end 10. |
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| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_JPH05209405A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>JPH05209405A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_JPH05209405A3</originalsourceid><addsrcrecordid>eNrjZJAM9g_1c1EI9vRx9XP29HNXcAwIcAxyDAkN5mFgTUvMKU7lhdLcDIpuriHOHrqpBfnxqcUFicmpeakl8V4BHgamRgaWJgamjsbEqAEAJDQgSg</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>SOUND SILENCING APPARATUS</title><source>esp@cenet</source><creator>INUI MASAAKI ; TSUJIMOTO YOSHIKAZU ; OMAE YUKIO ; NISHIMURA MASAHARU ; YAMASHITA TOSHIO ; KOJIMA SATOSHI ; IMAI YUTAKA</creator><creatorcontrib>INUI MASAAKI ; TSUJIMOTO YOSHIKAZU ; OMAE YUKIO ; NISHIMURA MASAHARU ; YAMASHITA TOSHIO ; KOJIMA SATOSHI ; IMAI YUTAKA</creatorcontrib><description>PURPOSE:To reduce air pressure sound occurring at the outlet end of a tunnel by a method wherein compressional wave in the tunnel is detected by a pressure gauge, and negative pressure wave for offsetting the compressional wave is produced on a signal outputted on detection by the pressure gauge and operated by a control device by negative pressure producing devices provided at the outlet end of the tunnel. CONSTITUTION:A sound silencing apparatus is constructed of negative pressure producing devices 5 provided at the right and the left of the outlet end 10 of a tunnel 01, a pressure gauge 7 that detects compressional wave 9 in the tunnel 01 and outputs signals based on the detection, and a control device 6 that calculates the time of emission of the compressional wave from the outlet end 10 and controls driving signals to be sent to the negative pressure producing devices 5. The compressional wave 9 produced by a train 04 entering the tunnel is detected by the pressure gauge 7 and the signal outputted therefrom is sent to the control device 6. Then operation is made by the control device on the signal inputted thereto to calculate the time when the compressional wave is emitted from the outlet of the tunnel 01. Then an instruction is given by the signals to the negative pressure producing devices 5 for starting the operation. Thereby negative pressure wave 8 for offsetting the compressional wave 9 is produced, resulting in silencing of air pressure sound on the outlet end 10.</description><language>eng</language><subject>ACOUSTICS ; ACOUSTICS NOT OTHERWISE PROVIDED FOR ; ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTIONOF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, ORTHE LIKE ; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES ; EARTH DRILLING ; FIXED CONSTRUCTIONS ; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL ; MINING ; MUSICAL INSTRUMENTS ; PHYSICS ; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS ; SOUND-PRODUCING DEVICES</subject><creationdate>1993</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19930820&DB=EPODOC&CC=JP&NR=H05209405A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25562,76317</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19930820&DB=EPODOC&CC=JP&NR=H05209405A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>INUI MASAAKI</creatorcontrib><creatorcontrib>TSUJIMOTO YOSHIKAZU</creatorcontrib><creatorcontrib>OMAE YUKIO</creatorcontrib><creatorcontrib>NISHIMURA MASAHARU</creatorcontrib><creatorcontrib>YAMASHITA TOSHIO</creatorcontrib><creatorcontrib>KOJIMA SATOSHI</creatorcontrib><creatorcontrib>IMAI YUTAKA</creatorcontrib><title>SOUND SILENCING APPARATUS</title><description>PURPOSE:To reduce air pressure sound occurring at the outlet end of a tunnel by a method wherein compressional wave in the tunnel is detected by a pressure gauge, and negative pressure wave for offsetting the compressional wave is produced on a signal outputted on detection by the pressure gauge and operated by a control device by negative pressure producing devices provided at the outlet end of the tunnel. CONSTITUTION:A sound silencing apparatus is constructed of negative pressure producing devices 5 provided at the right and the left of the outlet end 10 of a tunnel 01, a pressure gauge 7 that detects compressional wave 9 in the tunnel 01 and outputs signals based on the detection, and a control device 6 that calculates the time of emission of the compressional wave from the outlet end 10 and controls driving signals to be sent to the negative pressure producing devices 5. The compressional wave 9 produced by a train 04 entering the tunnel is detected by the pressure gauge 7 and the signal outputted therefrom is sent to the control device 6. Then operation is made by the control device on the signal inputted thereto to calculate the time when the compressional wave is emitted from the outlet of the tunnel 01. Then an instruction is given by the signals to the negative pressure producing devices 5 for starting the operation. Thereby negative pressure wave 8 for offsetting the compressional wave 9 is produced, resulting in silencing of air pressure sound on the outlet end 10.</description><subject>ACOUSTICS</subject><subject>ACOUSTICS NOT OTHERWISE PROVIDED FOR</subject><subject>ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTIONOF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, ORTHE LIKE</subject><subject>CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES</subject><subject>EARTH DRILLING</subject><subject>FIXED CONSTRUCTIONS</subject><subject>METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL</subject><subject>MINING</subject><subject>MUSICAL INSTRUMENTS</subject><subject>PHYSICS</subject><subject>SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS</subject><subject>SOUND-PRODUCING DEVICES</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1993</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZJAM9g_1c1EI9vRx9XP29HNXcAwIcAxyDAkN5mFgTUvMKU7lhdLcDIpuriHOHrqpBfnxqcUFicmpeakl8V4BHgamRgaWJgamjsbEqAEAJDQgSg</recordid><startdate>19930820</startdate><enddate>19930820</enddate><creator>INUI MASAAKI</creator><creator>TSUJIMOTO YOSHIKAZU</creator><creator>OMAE YUKIO</creator><creator>NISHIMURA MASAHARU</creator><creator>YAMASHITA TOSHIO</creator><creator>KOJIMA SATOSHI</creator><creator>IMAI YUTAKA</creator><scope>EVB</scope></search><sort><creationdate>19930820</creationdate><title>SOUND SILENCING APPARATUS</title><author>INUI MASAAKI ; TSUJIMOTO YOSHIKAZU ; OMAE YUKIO ; NISHIMURA MASAHARU ; YAMASHITA TOSHIO ; KOJIMA SATOSHI ; IMAI YUTAKA</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPH05209405A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1993</creationdate><topic>ACOUSTICS</topic><topic>ACOUSTICS NOT OTHERWISE PROVIDED FOR</topic><topic>ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTIONOF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, ORTHE LIKE</topic><topic>CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES</topic><topic>EARTH DRILLING</topic><topic>FIXED CONSTRUCTIONS</topic><topic>METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL</topic><topic>MINING</topic><topic>MUSICAL INSTRUMENTS</topic><topic>PHYSICS</topic><topic>SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS</topic><topic>SOUND-PRODUCING DEVICES</topic><toplevel>online_resources</toplevel><creatorcontrib>INUI MASAAKI</creatorcontrib><creatorcontrib>TSUJIMOTO YOSHIKAZU</creatorcontrib><creatorcontrib>OMAE YUKIO</creatorcontrib><creatorcontrib>NISHIMURA MASAHARU</creatorcontrib><creatorcontrib>YAMASHITA TOSHIO</creatorcontrib><creatorcontrib>KOJIMA SATOSHI</creatorcontrib><creatorcontrib>IMAI YUTAKA</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>INUI MASAAKI</au><au>TSUJIMOTO YOSHIKAZU</au><au>OMAE YUKIO</au><au>NISHIMURA MASAHARU</au><au>YAMASHITA TOSHIO</au><au>KOJIMA SATOSHI</au><au>IMAI YUTAKA</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>SOUND SILENCING APPARATUS</title><date>1993-08-20</date><risdate>1993</risdate><abstract>PURPOSE:To reduce air pressure sound occurring at the outlet end of a tunnel by a method wherein compressional wave in the tunnel is detected by a pressure gauge, and negative pressure wave for offsetting the compressional wave is produced on a signal outputted on detection by the pressure gauge and operated by a control device by negative pressure producing devices provided at the outlet end of the tunnel. CONSTITUTION:A sound silencing apparatus is constructed of negative pressure producing devices 5 provided at the right and the left of the outlet end 10 of a tunnel 01, a pressure gauge 7 that detects compressional wave 9 in the tunnel 01 and outputs signals based on the detection, and a control device 6 that calculates the time of emission of the compressional wave from the outlet end 10 and controls driving signals to be sent to the negative pressure producing devices 5. The compressional wave 9 produced by a train 04 entering the tunnel is detected by the pressure gauge 7 and the signal outputted therefrom is sent to the control device 6. Then operation is made by the control device on the signal inputted thereto to calculate the time when the compressional wave is emitted from the outlet of the tunnel 01. Then an instruction is given by the signals to the negative pressure producing devices 5 for starting the operation. Thereby negative pressure wave 8 for offsetting the compressional wave 9 is produced, resulting in silencing of air pressure sound on the outlet end 10.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTIONOF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, ORTHE LIKE CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES EARTH DRILLING FIXED CONSTRUCTIONS METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MINING MUSICAL INSTRUMENTS PHYSICS SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS SOUND-PRODUCING DEVICES |
| title | SOUND SILENCING APPARATUS |
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