Patent ID: 7804406
Filing Date: 2010-09-28
Classification: G01N

Abstract:
1. A concrete quality control system using a wireless IC tag kneaded with cement, aggregate, and water, the system comprising: a cement product including cement, aggregate, and water kneaded together; a wireless IC tag contained in the cement product, the wireless IC tag having an antenna section, a nonvolatile memory device, and a power section, the wireless IC tag being configured such that information is writable thereon and readable therefrom by wireless communication through the antenna section; a measuring device measuring manufacturing information of the cement product; an IC tag writer coupled to the measuring device, the IC tag writer writing the manufacturing information to the wireless IC tag; and an IC tag reader reading the manufacturing information from the wireless IC tag, wherein the power section generates electricity without a battery by resonating with received radio waves, wherein the cement product with the wireless IC tag contained therein is usable to construct a structure, and the manufacturing information in the wireless IC tag is readable from the wireless IC tag inside the structure by the IC tag reader after the cement product is cast at a construction site and finished into the structure, wherein the wireless IC tag has a solid form shaped as one of a sphere, an ellipsoid, and a polyhedron, and wherein a size and specific gravity of the wireless IC tag are approximately the same as a size and specific gravity of the aggregate kneaded into the cement product such that the wireless IC tag can be dispersed into the cement product evenly during kneading of the cement product.