| 摘要 |
PROBLEM TO BE SOLVED: To provide a monitoring system for monitoring the state of a machine. SOLUTION: An identification IC (integrated circuit) tag is installed on the rear face side of the upper cover part of a board box, and an antenna for performing RF (radio frequency) transmission and reception with the IC tag is provided at the right/lower end part of a main control substrate. The distance between the antenna and the IC tag is about 3 mm in the state of attaching the upper cover part and the lower cover part, and an R/W (reader/writer) unit connected to the antenna constantly communicates with the IC tag for monitoring the state of the substrate box. When the upper cover is opened and the distance between the antenna and the IC tag exceeds about 5 mm, communication becomes impossible and opening is detected soon by the R/W. Monitoring history data obtained by monitoring like this is outputted from an IC tag for history management 87 installed on the rear face of a glass frame 13 and received from the front face side of the Pachinko machine 1 by using a PDA (personal digital assistant) 100. COPYRIGHT: (C)2004,JPO
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