The intelligent power-analysis weighing device acquires the hoisting motor’s current and voltage signals through current transformers, voltage sensors, and data acquisition modules. Based on these measurements, the system calculates the motor’s torque output which, combined with the mechanical transmission ratio, is used to determine the lifting load. By integrating these electrical parameters with the crane’s operating characteristics, the system performs real-time analysis using dedicated algorithms to accurately compute the crane’s lifting weight.

By adopting mature power-analysis and intelligent filtering technologies, the system operates stably and reliably over long periods. With no calibration required for five years, accuracy error remains below 3%, effectively reducing false alarms and improving equipment safety.
Compared with conventional sensors, power-analysis-based weight detection devices provide faster response times, with an average overload alarm response time of less than 1 second.
Using power-analysis-based weight detection technology, all data acquisition and computation components are installed inside the equipment room, where the environment is stable. As a result, the system offers a long service life of up to 12 years.

Used to collect voltage, current, power, energy, and other electrical parameters of the hoisting motor and the opening/closing motor. Based on the acquired data, the system performs real-time analysis to calculate the crane’s load conditions.

Decrypt the weighting data from the Power datalogger, connect with the PLC, and transmit the weight of the load, the overload protection signal, and the faulty alarm from the system.

The Current sensor that is installed on the main power cable of the motor.
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