There are many inadequacies in existing monitoring systems in the market, such as video surveillance, infrared sensors, magnetic induction methods monitor, Bluetooth wireless monitoring and so on.
而现有的监控系统,如目前市场上常见的视频监控、红外感应、磁感应方式监控、蓝牙无线监控等皆存在诸多不足。
youdao