| 摘要 |
Breakage of a glass panel is detected by a simple structure practically without disfiguring the glass panel. A glass panel breakage detection system ( 12 ) has a glass panel ( 10 ), a reading device ( 14 ), and a notification device ( 16 ). The glass panel ( 10 ) has plate glass ( 18 ) formed of reinforced glass, an antenna ( 22 ) provided on the surface of the plate glass ( 18 ), and an ID chip ( 24 ) connectedly attached to the antenna ( 22 ) and transmitting, by radio communications through the antenna ( 22 ), identification information as a reply to a request from the outside. The reading device ( 14 ) acquires the identification information from the ID chip ( 24 ) by radio communications through the antenna ( 22 ). When a trouble occurs in the acquisition of the identification information by the reading device ( 14 ), the notification device ( 16 ) notifies the fact to the request from the reading device ( 14 ) to the radio chip.
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