ATE57890T1 - DEVICE FOR ENTERING TRAVEL COMMANDS FOR AN ELEVATOR. - Google Patents

Abstract

1. Device for registering car calls for a lift with floor call memories (16) and floor call buttons (DE), with cage call memories (10) and cage call buttons (DC), with a scanning device (13, 14, 17), which scans the cage call memories (10) and the floor call memories (16) for the purpose of ascertaining memorised calls, wherein a first and a second signal sequence (BC-Z, BE-Z) are generated, which contain the memorised calls, and with a control device (9), into which a cage call or a floor call is transferable only during the standstill of the lift cage (2) at a floor and which generates travel direction signals and stop signals for direct travel to chosen floors, characterised thereby, - that the scanning device (13, 14, 17) displays a counter (14), which generates addresses associated with the floors, - that address conductors (A0, A1, A2, A3) connected to the parallel outputs of the counter (14) and a conductor carrying the second signal sequence (BE-Z) are connected with the input of a first gate arrangement (18), - that a shift register (30) is provided for each address bit and the outputs of the first gage arrangement (18) are connected with the inputs of the shift registers (30), wherein the associated address is fed to the inputs of the shift register (30) on the appearance of a floor call in the second signal sequence (BE-Z), - that a second gate arrangement (20) is provided, the inputs of which are connected with the outputs of the shift registers (30) and with a releasing circuit (22), - that the outputs of the second gate arrangement (20) are connected to the control device (9), wherein an address present at the outputs of the shift registers (30) cannot be transferred into the control device (9) until the arrival of a clearance signal (~G~C), which signals the absence of a cage call, of the releasing circuit (22), - that the shift registers (30) are connected with an erasure switching circuit (31), wherein the last memories (30.15) of the shift registers (30) are reset and further addresses memorised in the shift registers (30) are shifted onwards after transfer of the address present at the outputs of the shift registers (30) into the control device (9) and - that the shift registers (30) are connected with an input switching circuit (32), wherein the address present at the inputs of the shift registers (30) is entered into the first memories (30.1) of the shift registers (30) if these first memories (30.1) are empty and the address concerned is not yet memorised in the shift registers (30).