发明名称 |
Passive blast pressure sensor |
摘要 |
A passive blast pressure sensor for detecting blast overpressures of at least a predetermined minimum threshold pressure. The blast pressure sensor includes a piston-cylinder arrangement with one end of the piston having a detection surface exposed to a blast event monitored medium through one end of the cylinder and the other end of the piston having a striker surface positioned to impact a contact stress sensitive film that is positioned against a strike surface of a rigid body, such as a backing plate. The contact stress sensitive film is of a type which changes color in response to at least a predetermined minimum contact stress which is defined as a product of the predetermined minimum threshold pressure and an amplification factor of the piston. In this manner, a color change in the film arising from impact of the piston accelerated by a blast event provides visual indication that a blast overpressure encountered from the blast event was not less than the predetermined minimum threshold pressure. |
申请公布号 |
US8397551(B2) |
申请公布日期 |
2013.03.19 |
申请号 |
US20100770983 |
申请日期 |
2010.04.30 |
申请人 |
KING MICHAEL J.;SANCHEZ ROBERTO J.;MOSS WILLIAM C.;LAWRENCE LIVERMORE NATIONAL SECURITY, LLC |
发明人 |
KING MICHAEL J.;SANCHEZ ROBERTO J.;MOSS WILLIAM C. |
分类号 |
G01L5/14 |
主分类号 |
G01L5/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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