Water conservancy gate load protection method and device

Abstract

The invention provides a water conservancy gate load protection method and device. The method comprises the steps that a set comparison voltage value is obtained; acquiring a working current value of a water conservancy gate motor; converting the working current value into a working voltage value; after delaying for a certain time, comparing the working voltage value with the comparison voltage value; and if the working voltage value is greater than the comparison voltage value, shutting down the motor. The device comprises a detection unit and a conversion unit, the detection unit is configured to obtain a working current value of a motor, and the conversion unit is configured to convert the working current value into a working voltage value; the setting unit is electrically connected with the comparison unit and is configured to obtain a current limiting value and distribute different comparison voltage values according to the current limiting value; the comparison unit is used for comparing the working voltage value with the comparison voltage value and outputting a comparison result; and the control unit is used for controlling power-on and power-off of the motor. The method and the device realize load protection by detecting the current of the motor, and are safer and more reliable.

Description

technical field [0001] The invention relates to the field of water conservancy engineering, in particular to a load protection method and device for a water conservancy gate. Background technique [0002] During the opening and closing process of water conservancy gates, they are often hindered by obstacles such as stones, water plants, etc., resulting in excessive loads when the gate leaves rise and fall, shortening the service life, serious circumstances, and causing damage to the gate and power motor. Therefore, it is necessary to monitor and protect the excessive load of the gate. [0003] The traditional water conservancy gate load protector uses a load sensor to monitor the gate. The load sensor is installed on the base of the screw gate hoist to measure the force of the gate system in the form of deformation. When the load tonnage reflected by the deformation changes, the sensor The signal transmission is combined with the gate control software to carry out load prot...

AI Technical Summary

Problems solved by technology

The traditional water conservancy gate load meter has many defects. First, this method relies on network signal transmission, and it is easy to fail when the signal is unstable in remote areas; the load sensor used is expensive and installed under the bottom plate of the screw hoist. The pressure of the hoist produces a fixed deformation, which affects the measurement accuracy; it is always in a standby state with power on, high energy consumption, and short service life

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