Online automatic detection and calibration device and method for Hall current sensor

Abstract

The invention discloses an online automatic detection and calibration device and method for a Hall current sensor. The device comprises a detection box and a mobile power supply, the mobile power supply is fixedly installed at the bottom end of the interior of the detection box, a detection fan is rotatably connected to the middle of the surface of the front end of the detection box, and a detection groove is formed in the upper end of the surface of the detection box; a magnet is arranged on the right side in the detection groove, and a handle is arranged on the left side of the detection box. According to the online automatic detection and calibration device and method for the Hall current sensor, the Hall current sensor is correspondingly connected with the detection fan of the detection box and the mobile power supply, the detection fan starts to rotate after the device is powered on, and the magnet is controlled to get close to or away from the sensor in the detection groove through rotation of the rotating plate and stretching of the pull rod; and at the moment, whether the fan is steered or not is observed and detected to detect whether the Hall sensor is damaged or not, andthe effect of quickly detecting whether the Hall current sensor is damaged or not is achieved.

Description

technical field [0001] The invention relates to the field of sensor detection, in particular to an online automatic detection and calibration device and method for a Hall current sensor. Background technique [0002] With the continuous development of industrial automation, more and more smart devices need to use sensors to collect data, and analyze the collected data to predict some possible events, thereby reducing the loss of downtime and improving production efficiency. The Hall current sensor is a magnetic field sensor made according to the Hall effect. It has the advantages of sensitivity to magnetic field, simple structure, small size, wide frequency response, large output voltage change and long service life. It is widely used in AC and DC electrical Current measurement, monitoring and protection of lines and equipment, power management, electric power, communications, meteorology, railways, oil fields, construction, metering, electrolysis, industrial automation tech...

AI Technical Summary

Problems solved by technology

[0003] The rapid development of industrial automation has greatly improved production efficiency, thus putting forward higher requirements for production and detection efficiency. In the application of using Hall current sensors to measure the neutral point DC current of transformers, tens of thousands of transformer neutral points often appear. The inrush current of the ampere, the current value is thousands of times of the measuring range of the Hall current sensor, which causes the magnetic bias or damage of the Hall current sensor. When the Hall current sensor is damaged, it is difficult to be found in time, resulting in measurement errors. Most of the current sensors are manually operated during calibration and detection. Due to the poor accuracy and low efficiency of manual operation, the detection personnel are prone to fatigue and the detection efficiency is reduced, the time cannot last long, and the product consistency is poor. It is also easy to cause missed inspections, and personal emotions and mental states will also have a considerable impact on the accuracy and efficiency of product inspections.

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