Local apparatus network for elevator and its sending control method

Abstract

Provided is a local apparatus network for an elevator and their transmission control method capable of guaranteeing a real-time property. This local apparatus network for the elevator, which has a protocol that a local apparatus having a lower priority order stops transmission when at least two local apparatuses start transmission simultaneously, is provided with transmitting means allowing the local apparatuses to attach their own priority orders to the transmitted data and to make data transmission. Each transmitting means is provided with a priority order changing means lowering its own priority order according to the number of transmissions, a priority order initialization instruction transmitting means transmitting a priority order initialization instruction to each local apparatus when its own priority order becomes the lowest priority order, and a priority order initializing means initializing its own priority order when its own priority becomes the lowest priority order and when a priority order initialization instruction is received from another local apparatus.

Description

technical field [0001] The present invention relates to a network of multiple local devices connected to the network in an elevator system or an elevator group management system, in particular to an elevator local device network and a sending control method for sending its information. Background technique [0002] Such a conventional network will be described with reference to, for example, the elevator local equipment network shown in Mitsubishi Electric Technical Bulletin Vol. 64, No. 10, pp. 801-806. Fig. 9 is a structural diagram of an elevator partial equipment network using conventional elevator lobby (hereinafter referred to as lobby) equipment as local equipment, Fig. 10 is an address map of an up button and a down button, Fig. 11 is a transfer map, and Fig. 12 is a conventional elevator Schematic diagram of the group management system. [0003] In each figure, 16, 16a~16d are the controllers that respectively control each elevator, 17 is the group management contr...

AI Technical Summary

Problems solved by technology

Regarding this point, in the conventional elevator group management system, for example, in order to light up all the response lamps of the up buttons on the first floor, the control system has a vertically divided structure, so the hall equipment 22a, 24a is connected to the network cable 23 and In 25, it is necessary to carry out double sending, which has the problem of increasing the total amount of data transmitted by the elevator group management system

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