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2. 发明公开

EP1445990A1 Multiple location switching of an AC load 有权
标题翻译： Schalten einer AC Last von mehrerenPlätzenaus
公开(公告)号：EP1445990A1
公开(公告)日：2004-08-11
申请号：EP04250598.2
申请日：2004-02-04
申请人： Sim, Quan Yee , Sim, See Lip
发明人： Sim, Quan Yee , Sim, See Lip
IPC分类号： H05B37/02
CPC分类号： H05B39/086 , H05B37/0263
摘要： It is common for lamps to be controlled from two switches so that, for example, a hall light can be turned on and off by either of two switches. There are occasions when it would be desirable for the lamp to be controlled by more switches, for example a switch at both ends of the hall and another on the landing above.
An electrical switch for AC is disclosed, for connection in parallel with others of the same kind. The switch has an operating member, a controlled switching device and a controller for controlling the time in a cycle from which the switching device conducts. The controller is responsive to the voltage across the switching device to detect a time in a cycle from which the switching device in one of the parallel switches conducts so as to determine whether all parallel switches are idle, that another switch is on, or when it is itself on that another switch has been operated.
When all parallel switches are idle the controller is responsive to an operating signal produced by operation of the operating member to perform an on function causing the switching device to conduct from a first set time within the cycle. The controller is being responsive to a subsequent operating signal to cause the switching device not to conduct, or to the determination that another switch has been operated to cause the switching device not to conduct. When another parallel switch is on, the controller is responsive to the operating signal to cause the switching device to conduct from a second set time in advance of the first and to perform an off function.
Installation of the switches is simple since they need only to be connected in parallel at the switch or the light fitting. Each switch can then both turn on the light or turn it off independently.
摘要翻译：由两个开关控制灯是很常见的，例如，可以通过两个开关之一来打开和关闭霍尔灯。有时候，需要通过更多的开关来控制灯，例如在大厅的两端的开关和另一个位于上方的着陆点上。公开了一种用于AC的电开关，用于与同类其他的并联连接。开关具有操作构件，受控开关装置和控制器，用于控制开关装置从其传导的周期中的时间。控制器响应于开关装置两端的电压来检测一个并联开关中的开关装置从一个循环开始的时间，以便确定所有并联开关是否空闲，另一个开关是开启还是在本身就是另一台交换机已经运行。当所有并联开关空闲时，控制器响应于由操作构件的操作产生的操作信号，以执行导通开关装置从该循环内的第一设定时间开始的导通功能。控制器响应于随后的操作信号以使开关装置不进行，或者确定另一开关已被操作以使开关装置不进行。当另一个并联开关打开时，控制器响应于操作信号使开关装置从第一设定时间开始并且执行断开功能。开关的安装很简单，因为它们只需要在开关或灯具处并联连接。然后，每个开关都可以打开灯或单独关闭灯。

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