| 摘要 |
FIELD: access prevention systems. ^ SUBSTANCE: first variant of locking system has block 1 for receiving code, switchboards 21,à,23 for unblocking, locks 31,à,34, working devices 41à,44. First input of each switchboard 21,à,23 for unblocking is connected to input of first lock 31 and output of code-receiving block 1, one of outputs of locks 31,à,33 is connected to second input of appropriate switchboard 21,à,23 for unblocking, output of which is connected to input of following lock 32,à,34, output of each lock 31,à,34 is connected to input of executive device 41,à,44. Second variant of locking system has block 1 for receiving code, switchboards 21,à,23 for unblocking, locks 31,à,34, working devices 41,à,44, switchboards 51,à,53 for blocking. First input of switchboard 51,à,53 for blocking is connected to output of code-receiving block 1 and first input of unblocking switchboard 23, first input of switchboard 21,à,22 for unblocking is connected to output of following switchboard 52,à,53 for unblocking, first output of lock 31,à,33 is connected to second input of respective switchboard 21,à,23 for unblocking, output of which is connected to input of following lock 32,à,34, second output of which is connected to second input of previous switchboard 51,à,53 for blocking, output of switchboard 51 for blocking is connected to input of lock 31, output of lock 31,à,34 is connected to input of working device 41,à,44. ^ EFFECT: higher efficiency. ^ 2 cl, 2 dwg
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