The Method of Microcomputer Detecting Fuse and Its Application

Abstract

A method for detecting a fuse in real time through a microcomputer is characterized in that the method is based on an electric power storage module which comprises an input node, an output node, the fuse (LF), a second resistor (R2), a first resistor (R1), a first capacitor, a first inductor (L1), a first diode, a second capacitor (C2), a second diode (D2), a third diode, a number zero sampling resistor, a first sampling resistor, a switch, a rechargeable battery, a power source site, a single-chip microcomputer, a bootstrapping node, a sampling node and an optocoupler. A photovoltaic power grid, a UPS power source special for a computer and an intelligent robot are provided with the electric power storage device of the technical scheme. The method is low in cost, application is flexible, the service life is long, the fuse is not prone to damage, stable and reliable, whether an open circuit happens to a diode with the positive electrode connected with a high-voltage electrode of a direct-current power source or not is tested through the electric energy of the direct-current power source under the situation that the direct-current power source runs, and the open circuit of the fuse can be reliably detected in real time by means of a bypass.

Description

technical field [0001] The invention belongs to the field of applied electronics, and in particular relates to a method for real-time detection of a fuse using a microcomputer. Background technique [0002] Instant self-test during circuit operation is of great significance to prevent circuit safety problems. There is no instant test method for diodes whose negative pole is connected to the high voltage pole of the power supply in the prior art, that is to say, when the positive pole of a diode is connected to the high voltage pole of the power supply In the case of a sudden open circuit of the diode (due to breakdown, burning, etc.), it is difficult for the circuit to detect immediately through the self-test circuit or program, which is a huge trouble for instant detection of circuit failure; [0003] Adding a fuse to a single battery in the storage module of the power supply can prevent the battery from being damaged due to excessive current. However, after the fuse breaks...

AI Technical Summary

Problems solved by technology

[0002] Instant self-test during circuit operation is of great significance to prevent circuit safety problems. There is no instant test method for diodes whose negative pole is connected to the high voltage pole of the power supply in the prior art, that is to say, when the positive pole of a diode is connected to the high voltage pole of the power supply In the case of a sudden open circuit of the diode (due to breakdown, burning, etc.), it is difficult for the circuit to detect immediately through the self-test circuit or program, which is a huge trouble for instant detection of circuit failure;

[0003] Adding a fuse to a single battery in the storage module of the power supply can prevent the battery from being damaged due to excessive current. However, after the fuse breaks, the battery cannot continue to charge and discharge, which damages the vertical capacity of the battery pack. The pick-up, maintenance and replacement of the battery in the battery pack is carried out during the overall maintenance of the battery pack, and the middle section of the battery pack as a whole needs to be carried out, which is unfavorable for systems that require continuous operation of buffered electric energy

Images