One-key multi-purpose switching system for remote end of phasing tester

Abstract

The invention relates to a one-key multi-purpose switching system for the remote end of a phasing tester. According to the one-key multi-purpose switching system, a triode Q1, the coil of a relay KM and a battery form a loop; the base of the triode Q1 is connected with the pin I / O1 of a microcontroller; a diode D1 is in reverse parallel connection with the coil of the relay KM; the common contact of the relay KM is connected with the GND pin of the microcontroller; the normally closed contact of the relay KM is connected with the I / O2 pin of the microcontroller; the normally open contact of the relay KM is connected with the negative pole of the battery; the negative pole of the battery, the I / O2 pin of the microcontroller and the normally closed contact of the relay KM are connected by an inching key KEY; the positive pole of the battery is connected with the VCC pin of the microcontroller; the positive pole of the battery is provided with a power source interface V-MAIN; the common contact of the relay KM is provided with a grounding interface GND; a GSM communication module is connected with the microcontroller; and an indicator light includes a main station work signal indicator lamp L1. According to the one-key multi-purpose switching system of the invention, the design of a circuit simplified, and applied devices are reduced. The one-key multi-purpose switching system has the advantages of low cost, high maintainability, simple appearance and compact structure.

Description

technical field [0001] The invention relates to a button operating system, in particular to a single-key multi-purpose switch system for the remote end of a phase nuclear instrument. Background technique [0002] During the actual operation of the power system, it is often necessary to carry out phase verification work. Before substations and transmission lines are put into operation after new construction, reconstruction and expansion, and before the transmission line is overhauled and delivered to users, a three-phase circuit phase verification test must be carried out. , to ensure that the three-phase phase sequence of the power equipment put into operation is consistent. [0003] At present, domestic high-voltage power line verification mainly includes three methods: local wired verification, local wireless verification and remote wireless verification. However, the wireless phase verification system at this stage requires separate measurements in A and B places of the ...

AI Technical Summary

Problems solved by technology

The mechanical switch is to turn the circuit on and off in the form of physical and mechanical contact, but because of the wear and tear of the mechanical switch and improper use of manpower, it often leads to damage to the mechanical switch, especially when used on a nuclear phase meter. The service life will be shortened due to frequent switching

The electronic switch is to achieve the state of opening and closing the path in the form of current. This kind of switch has the advantages of safety and simplicity. It is mainly a switch that uses electronic components to control the opening and closing of the circuit in the current path, such as mobile phones and laptop computers. It is this kind of switch; but because the microcontroller must remain in the sleep state to detect the turn-on request when it is turned off, this causes additional power loss; although this part of power loss is small, it will be used in some cases. It will cause major losses. For example, the battery is still continuously discharged due to this part of the loss. After a long time, the battery will be damaged due to over-discharge and cannot be charged and used again.

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