| 摘要 |
<p>An electronic central locking system comprising a plurality of locking devices controlled by respective electromotive means (Ma-Mg), each locking device having at least one electrical transducer (R1-R2) capable of generating a signal indicative of the state of the locking device, a common electrical signal line connected to receive all the transducer signals to generate a combined analogue signal, and a central electronic control circuit responsive to the combined analogue signal on the common signal line to determine the status of all the locking devices (Ma-Mg), and further responsive to a command signal to determine which electromotive means (Ma-Mg) to switch on or off and to provide corresponding power outputs along a power line or lines to at least one of the electromotive means, the transducers being selected such that the values of their respective electrical signals form a predetermined set of different values, whereby each of the possible values of the combined analogue signal is uniquely indicative of a corresponding combination of status of the locking devices.</p> |
