A multi-channel adjustable large current constant current intelligent sensor control power supply device

Abstract

The invention discloses a multi-channel adjustable large current constant current intelligent sensing control power supply unit which comprises a combined host. The combined host is in communication connection with an MCU, and the MCU is connected with a first level inversion rectifier module. An external direct-current electrical source is arranged at the input end of the first level inversion rectifier module, and high frequency alternating currents are arranged at the output end of the first level inversion rectifier module. Voltage reduction is conducted on all paths of the high frequency alternating currents respectively through an intelligent subdivision voltage reduction module, then, the high frequency alternating currents are rectified through the rectifier module, afterwards, the high frequency alternating currents enter a linear constant current control module, and thus the output currents can meet the requirement. The MCU further receives voltages fed back by a voltage sampling module, the duty ratio of an inverter in the first level inversion rectifier module is regulated, and the MCU further accurately controls the currents according to currents which are fed back by a current sampling module and pass through the linear constant current control module so that stable, constant and large currents can be output. PWM control inversion and linear regulation constant currents are combined for use, and the PWM control inversion and the linear regulation constant currents form feedforward control on the whole. The stable, constant and large currents applicable to different working conditions can be output, so that accurate control is achieved.

Description

technical field [0001] The invention relates to a power supply control device, in particular to a multi-channel adjustable large current constant current intelligent sensor control power supply device. Background technique [0002] At present, there are mainly two methods of tunnel construction: drill and blast method and tunnel boring machine construction. Among them, the tunnel boring machine construction method occupies a dominant position due to its advantages of fast construction speed, good quality, safety and environmental protection. However, the adaptability of the tunnel boring machine to the ground is poor, and it will easily induce geological disasters such as landslides, large deformations, and water inrushes. In order to ensure the safety of roadheader construction and avoid the occurrence of the above-mentioned disasters and accidents, it is very necessary to carry out advanced geological forecasting work under the construction environment of tunnel boring ma...

AI Technical Summary

Problems solved by technology

Due to the complex construction and detection environment of tunnel boring machines, the load range of each constant current power supply is large, and the comprehensive geophysical detection equipment uses the same set of power supply, and the power supply voltage fluctuates greatly, which brings great challenges to the design of multiple constant current and high current power supply devices. difficulties, so we have not yet seen a large-current constant-current power supply device that adapts to different multi-channel load conditions

However, if the problem of multi-channel power supply is only regarded as a simple combination of single-channel constant current power supply, it will bring a series of negative problems such as energy waste and high cost.

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