Abstract: Obtained is a remote update system for an elevator control program, which is capable of sequentially realizing update of control programs of a plurality of elevators with reduced communication time and costs without stopping the plurality of elevators at the same time. A server 10 delivers to a representative elevator 30(1) update data including differential information between the control program of a version before update and the control program of the latest version to be updated to through a communication line 20, and the representative elevator 30(1) and other elevators 30(2) to 30(N) sequentially transfer the update data according to a predetermined transfer order, and update their own control programs based on the update data including the differential data.

Abstract: Obtained is a remote update system for an elevator control program, which is capable of sequentially realizing update of control programs of a plurality of elevators with reduced communication time and costs without stopping the plurality of elevators at the same time. A server 10 delivers to a representative elevator 30(1) update data including differential information between the control program of a version before update and the control program of the latest version to be updated to through a communication line 20, and the representative elevator 30(1) and other elevators 30(2) to 30(N) sequentially transfer the update data according to a predetermined transfer order, and update their own control programs based on the update data including the differential data.

Abstract: An elevator door control device includes an obstruction sensor adapted to detect an obstruction in the vicinity of any one of the vertical frames of the doorway frame and to output an obstruction detection signal, and a door control unit for controlling door opening operation and door closing operation of a car door and a landing door in response to the obstruction detection signal. The obstruction sensor has light emitters provided on the vertical frames of the doorway frame and light receivers provided on the upper frame of the doorway frame. The light emitters are provided in the vicinity of the lower ends of the vertical frames and emit detection lights substantially along the vertical frames. The light receivers are provided on the lower surface of the upper frame and receive the detection lights.

Abstract: An elevator door control device includes an obstruction sensor for detecting an obstruction in the vicinity of any one of vertical frame walls of a doorway frame and outputting an obstruction detection signal, and a door control unit for controlling door opening operation and door closing operation of a car door and a landing door in response to the obstruction detection signal. The obstruction sensor has light emitters on the vertical frame walls of the doorway frame and light detectors on the upper frame wall of the doorway frame. The light emitters are located in the vicinity of the lower ends of the vertical frame walls and emit detection light beams substantially along the vertical frame walls. The light detectors are located on the lower surface of the upper frame wall and detect the detection light beams.

Abstract: An elevator door control device includes an obstruction sensor adapted to detect an obstruction in the vicinity of any one of the vertical frames of the doorway frame and to output an obstruction detection signal, and a door control unit for controlling door opening operation and door closing operation of a car door and a landing door in response to the obstruction detection signal. The obstruction sensor has light emitters provided on the vertical frames of the doorway frame and light receivers provided on the upper frame of the doorway frame. The light emitters are provided in the vicinity of the lower ends of the vertical frames and emit detection lights substantially along the vertical frames. The light receivers are provided on the lower surface of the upper frame and receive the detection lights.

Abstract: An elevator system has a pair of horizontally opposed vertical surfaces defining therebetween a doorway or opening to an elevator cage and a door moving horizontally to open and close the opening. In particular, the system has a first optical device having a light emitter for emitting light and a second optical device having a light receiver for receiving the light emitted from the light emitter. The first and second optical devices are positioned in a vertical plane crossing the opening and adjacent to the opening. One of the first and second optical devices is positioned below the other of the first and second optical devices and mounted in the vertical surface.

Abstract: A cmmunications control system for elevators having control units including at least respective car control units and elevator hall registration control units, each of the control units having a node, the nodes being connected to each other via a network, and each of the nodes having a management table establishing correspondence between node number and network address.

Abstract: A communications control system for elevators with control units inter-connected via a network and each control unit receives its own logical destination from an external location. The elevator communications control system includes a first control unit for detecting an initialized state of the network and operating as a network master node governing synchronization control among the control units when the first control unit is the first to send out, to the network, a network master node candidate request having a logical destination of the first control unit attached; and a second control unit for operating as a sub-node obeying the network master node when the initialized state of the network is not detected.

Abstract: A communications control system for elevators in which synchronization instructions do not result in all units bearing data receiving loads, and smooth data transfer may be realized. A node acting as a master sends synchronization start data to one slave from among many slaves; receives synchronization completion data from the slave, and sends subsequent synchronization start data to a subsequent slave, in order; and adjusts the timing for sending synchronization start data sending so that it matches a target cycle, assuming that an interval for sending the synchronization start data is a synchronization start data sending cycle, based on: amount of time from the sending of the synchronization start data until the receiving of the synchronization completion data; an amount of time required for sending the data, being calculable from the number of sending data stored in a sending buffer until the time of sending; and a target time for the synchronization start data sending cycle.

Abstract: An elevator system has a pair of horizontally opposed vertical surfaces defining therebetween a doorway or opening to an elevator cage and a door moving horizontally to open and close the opening. In particular, the system has a first optical device having a light emitter for emitting light and a second optical device having a light receiver for receiving the light emitted from the light emitter. The first and second optical devices are positioned in a vertical plane crossing the opening and adjacent to the opening. One of the first and second optical devices is positioned below the other of the first and second optical devices and mounted in the vertical surface.

Abstract: A communication system includes a CPU for controlling internal operations; a management table storage portion for storing a management table referred to for communication control; an intrinsic identification number setting portion for setting a number for identifying respective communication devices; a network interface connected to a network connecting the communication devices and controlled by the CPU; and at least one interface having a hall transmission line interface connected to the hall transmission line, a respective cabin controller interface connected to a corresponding cabin controller, a group management controller interface connected to the group management controller, and a transmission line expansion interface connected to an expansion transmission line, other than the hall transmission line, wherein the interface is controlled by the CPU.

Abstract: An elevator car position detecting apparatus includes plates arranged at selected operation points defined along the elevator path, in such arrangement that one operation point is distinguishable from another operation point. Position detectors are provided on a car so that as car moves past the operation points the position detectors communicate with corresponding plates without contacting the plates. The position detectors associated with the corresponding plates generate signals indicating that the elevator car has reached the corresponding position.