PROBLEM TO BE SOLVED: To provide an opening detection sheet and an opening detection system capable of suppressing the number of wiring to minimum and detecting accurately opening of a storage part.SOLUTION: An opening detection system 100 comprises: an opening detection sheet 1 an opening detection module 2 for detecting opening of the opening detection sheet 1 a master unit 3 capable of communicating with the opening detection module 2 and a server device 4 for communicating with the master unit 3 through a network 5. The opening detection sheet 1 includes resistances 15X for opening detection, being connected to a storage part 10 in series, and constant connection resistances 15Y connected to the resistance for opening detection in parallel, the resistance for opening detection and constant connection resistance are one set, and these sets are connected in series.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2017,JPO&INPIT【課題】配線本数を最小限に抑えつつ、収容部の開封を精度よく検出することが可能な開封検出シート及び開封検出システムを提供する。【解決手段】開封検出システム100は、開封検出シート1と、開封検出シート1の開封を検出する開封検出モジュール2と、開封検出モジュール2と通信可能な親機3と、親機3とネットワーク5を介して通信を行うサーバ装置4とを備える。開封検出シート1は、収容部10に直列に接続された開封検出用抵抗15Xと、これに並列に接続された常時接続抵抗15Yとを1組とし、これらの組が直列に接続された構成を有する。【選択図】図4
