首页>
外国专利>
Lift control and security system for multi-storey building - requires passenger to enter secret code for certain floors after altering decoding circuit via prescribed key
Lift control and security system for multi-storey building - requires passenger to enter secret code for certain floors after altering decoding circuit via prescribed key
展开▼
机译:多层建筑的电梯控制和安全系统-要求乘客通过规定的钥匙更改解码电路后,为某些楼层输入密码
展开▼
页面导航
摘要
著录项
相似文献
摘要
The floor selection keyboard (12) in the lift is wired to the control system (10) via a microprocessor-controlled coding circuit (16) bypassed by the wires from keys (1-3,6) corresp. to those floors which are accessible to all comers. For access to other floors (4, 5, 7) the visitor must press the ground-floor key (0) briefly to activate the circuit (16) before keying-in the code known to him or her. A correct code is acknowledged by a lamp (18). USE/ADVANTAGE - In building where access to some floors is restricted to authorised persons. Easily installed and operated system affords higher security.
展开▼