Device and method for monitoring opening or closing of elevator door lock

Application Number: 00111251
Application Date: 2000.07.29
Publication Number: 1336319
Publication Date: 2002.02.20
Priority Information:
International: B66B13/18
Applicant(s) Name: Xiao Minghuan
Inventor(s) Name: Xiao Minghuan;Xiao Junyan
Patent Agency Code: 34102
Patent Agent: yang jinhong
Abstract The present invention relates to elevator door lock switch on-off monitering device and its detecting method, it is characterized in that using N set parallel connected detecting by-path S1, S2…Sn, the parallel connected point joints the analogue input end negative pole of A/D converter, the other end of each by-path is successively connected to door lock switch AK1, AK2…AKn of each storey, the detecting power P1 positive pole connects A/D converter positive pole, negative pole connects door switch MK, converter signal output end connects LED, if MK cut off, LED displays O, MK on, AKl off, LED displays 1, and so on. Advantages: simple structure, low cost, high detecting accuracy, high working stability etc.