The present invention makes it difficult to interpret communication packets in multi-branch communication in an elevator system. An elevator system (100) includes an elevator and a plurality of control devices associated with operation control and maintenance of the elevator, the plurality of control devices being capable of communicating with each other. The control device comprises: a sequence generation unit (42a) for generating sequence data for changing the format of the communication packet sent to the other control device according to the operation state of the elevator; a protection data generation unit (43a) that, on the basis of the order data, encrypts the communication packet by changing the format of the communication packet; and a protection data recovery unit (45a) that recovers the communication packet received from the other control device.
本发明在电梯系统中的多分支方式的通信中,使通信分组的解读变得困难。电梯系统(100)包括电梯以及与电梯的运行控制及维护相关联的多个控制装置,多个控制装置能够相互通信。控制装置包括:顺序生成部(42a),该顺序生成部根据电梯的运行状态,生成用于变更发送给其他控制装置的通信分组的格式的顺序数据;保护数据生成部(43a),该保护数据生成部根据顺序数据,变更通信分组的格式并进行加密;以及保护数据恢复部(45a),该保护数据恢复部恢复从其他控制装置接收到的通信分组。
Elevator system and communication packet analysis countermeasure method
电梯系统及通信分组分析对策方法
2025-04-29
Patent
Electronic Resource
Chinese
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