发明名称 |
Paving material density indicator and method using capacitance |
摘要 |
The present invention relates generally to paving equipment. More particularly, the present invention relates to a paving material density indicator which has a selectively shaped sensor to control at least one of the depth, area, sensitivity and shape of a density determination. The effect on sensor capacitance is measured using a constant current source and is used to determine density of the paving material. The invention is also a method for determining density of paving material and a set of sensors for density determination. <IMAGE> |
申请公布号 |
EP0895081(A3) |
申请公布日期 |
2000.10.11 |
申请号 |
EP19980113897 |
申请日期 |
1998.07.24 |
申请人 |
TRANSTECH SYSTEMS, INC. |
发明人 |
SOVIK, ROBERT A.;HOSTERMAN, RICHARD N.;MOROSS, GEORGE G. |
分类号 |
G01N9/24;G01N33/42 |
主分类号 |
G01N9/24 |
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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