Detection method and system for elevator load

Abstract

The invention discloses a detection method and system for an elevator load. The method comprises the steps of taking a no-load signal and a rated load signal of an elevator as reference signals; obtaining the real-time load signal of the elevator; respectively comparing the values of the reference signals and the ream-time load signal; and determining the load condition of the elevator according to the comparing result of the reference signals and the real-time load signal of the elevator. The system comprises a storage unit, a real-time load signal acquiring unit, a comparing unit, an analysis unit and an output unit; the storage unit and the real-time signal acquiring unit are electrically connected with the comparing unit respectively; the comparing unit is electrically connected with the analysis unit electrically connected with the output unit. By adopting the detection method and system for the elevator load, the real-time load signal of the elevator is more accurate, the load condition of the elevator judged according to a logic operation result by comparing the elevator real-time load signal, the elevator no-load signal and the elevator rated load signal more accords with real condition, and the safety of the elevator operation is higher.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to an elevator load detection method and system. Background technique [0002] In the vertical lifting elevator system currently in use, the total weight of the car changes due to the difference in the occupants of the car. When the elevator is fully loaded, the elevator needs to output an alarm signal to inform passengers that the elevator is full and no more people can enter, and at the same time inform the elevator control system that it can enter the full-load direct driving state and no longer respond to external call signals. When the weight of the person entering the elevator car reaches the overload weight, an alarm signal is output to notify the passengers who entered after exiting the car, and at the same time inform the elevator control system that the elevator cannot be started to run, so as to avoid the elevator falling when the driving force is less than the load. ...

AI Technical Summary

Problems solved by technology

The sensor signal using this method is generally an analog signal, which is easily affected by the transmission distance and interference, resulting in inaccurate signals collected by the control board, false positives and false positives, etc.

The control panel is bulky and has high requirements for installation space and operating environment

[0006] 2. When the sensor is damaged, the object to be detected is loose or lost, the sensor outputs a low value or no output, and the control board detects the analog signal. After AD conversion, it will consider the value to be low. The default is that the elevator is lightly loaded, and the elevator still presses the light button. When the elevator is fully loaded or overloaded, the elevator cannot be alerted to stop the operation, thus posing a safety hazard

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