发明名称 |
MIXER WAVEFORM ANALYSIS FOR MONITORING AND CONTROLLING CONCRETE |
摘要 |
Method and system for motoring and obtaining information about quantity and characteristics of cementitious material In a rotating mixing drum. The present invention involves analysis of a sequence of values corresponding to a waveform reflecting the hydraulic pressure required to turn a concrete mixing drum at successive instances during rotation. Preferred embodiments involve the conversion of this time-domain data into the frequency-domain. Behavior of multiple harmonics can be examined in real time and further information obtained regarding physical properties of the concrete. Rheology or other properties can be adjusted by introducing a liquid into the concrete, based on a comparison between time-domain and/or frequency-domain values derived from a sample concrete in the drum and previously stored time-domain and/or frequency-domain values, which are preferably correlated with physical characteristics of concrete, such as slump, slump flow, load weight, and other factors. |
申请公布号 |
WO2010111204(A1) |
申请公布日期 |
2010.09.30 |
申请号 |
WO2010US28207 |
申请日期 |
2010.03.23 |
申请人 |
GR 2008 LLC;KOEHLER, ERIC;VERDINO, STEVE;CULLEY, ROBERT |
发明人 |
KOEHLER, ERIC;VERDINO, STEVE;CULLEY, ROBERT |
分类号 |
G01N33/38 |
主分类号 |
G01N33/38 |
代理机构 |
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代理人 |
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地址 |
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