Video system and method in internet of things

The video monitoring method in the Internet of Things comprises the following steps: carrying out signal sampling on a target; alarming and/or starting video monitoring based on a signal sampling result; a safe channel is provided for all data transmission through video fusion monitoring; and providing a security service through the block chain security management platform, wherein the security service comprises security certificate issuing and/or key management. 物联网中的视频监控方法，包括对目标实行信号采样；基于信号采样结果报警和/或开启视频监控；通过视频融合监控为所有数据传输提供安全通道；以及通过区块链安全管理平台提供安全服务，其中安全服务包括安全证书发放和/或密钥管理。