Speed ​​monitoring device and method for elevator traction machine during power failure and self-rescue

Abstract

The invention discloses a speed monitoring device and a method of an elevator tractor in power failure self-rescue. The device comprises a current acquiring module, a shaping circuit module, a data recording module, a data processing module and a display module. Themethod comprises the following steps: induction current generated in self-rescue of a target tractor winding is acquired; the waveform of the acquired current is shaped as square waves, and square wave signals are sent out; related parameters and standard speed parameters of the tractor are recorded; the square wave signals are analyzed; the signal analysis results and the related parameters and standard speed parameters of the tractor are stored; the stored data is processed to obtain judgment results if the real-time speed and the speed of the tractor are normal; and the judgment results, if the related parameters of the tractor and the real-time speed and the speed of the tractor are normal, are displayed. The device is simple in structure and convenient for carrying and use, and can be widely applied to the speed monitoring of various elevators in power failure self-rescue.

Description

technical field [0001] The invention relates to a speed monitoring device and method for an elevator traction machine, in particular to a speed monitoring device and method for an elevator traction machine during power failure and self-rescue, belonging to the field of elevator speed monitoring. Background technique [0002] In modern society, elevators have been widely used as auxiliary equipment for daily life, and are being installed at various construction sites with a rapid development momentum, especially in some high-end office buildings and residential areas. It can be said that elevators are inseparable from people's daily life. Become an indispensable means of transportation for transporting people and goods in multi-storey buildings. [0003] With the rapid development of the elevator industry, a large number of new technologies have been applied to the elevator industry. There are also various inspection methods and inspection items for elevators, and the require...

AI Technical Summary

Problems solved by technology

The method of marking the steel wire rope needs to mark the steel wire rope in sections. At the same time as the artificial timing, it is necessary to manually estimate the moving distance of the steel wire rope through the marking, which is not accurate and is prone to errors; the principle of the special measuring instrument is: by measuring the acceleration of gravity Inconsistency at different altitudes, get the corresponding height, and directly get the speed data of the elevator running through the change of height for a certain period of time, but this method needs to be realized by using imported measuring instruments, and its cost is relatively high

Therefore, the above two measurement methods do not meet the needs of the elevator industry at this stage

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