High-precision intelligent direct-current power supply system and method

Abstract

The invention provides a high-precision intelligent direct-current power supply system and method and relates to the field of car safety. The high-precision intelligent direct-current power supply system is characterized by comprising a mobile terminal control module, a mobile terminal data transmission device, a button plate, a control processor, a display, an alarming device, an analog-to-digital converting device, a constant current source, a load and a self-made power supply. The mobile terminal control module is in signal connection with the mobile terminal data transmission device. The mobile terminal data transmission device is in signal connection with the control processor. The control processor is respectively in signal connection with the button plate, the alarming device, the display and the analog-to-digital converting device. The analog-to-digital converting device is respectively in signal connection with the constant current source and the self-made power supply. The self-made power supply is respectively in signal connection with the analog-to-digital converting device, the load and the constant current source. The load is in signal connection with the constant current source. The high-precision intelligent direct-current power supply system has the advantages that the system cannot be interfered easily, is fast in execution, has an alarming function, and the like.

Description

technical field [0001] The invention relates to the field of power supply technology, in particular to a high-precision intelligent DC power supply system and method. Background technique [0002] At present, the digital control DC source generally adopts the combination of current-voltage conversion circuit composed of operational amplifier and single-chip microcomputer. Most of the design schemes are open-loop systems. The main controller is only used for digital setting and display, and does not detect and control the output current. On the basis of traditional circuit design, this paper uses the feedback and control principle in the control system to introduce current negative feedback, obtain a sampling voltage proportional to the current on the sampling resistor, and connect it to the reverse input terminal of the operational amplifier to realize negative feedback. , forming a closed-loop control system with constant current output. [0003] In terms of software, the ...

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Problems solved by technology

[0002] At present, the digital control DC source generally adopts the combination of current-voltage conversion circuit composed of operational amplifier and single-chip microcomputer. Most of the design schemes are open-loop systems. The main controller is only used for digital setting and display, and does not detect and control the output current.

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