Intelligent monitoring system of low-voltage electric cabinet

Abstract

The invention relates to an intelligent monitoring system of a low-voltage electric cabinet, and belongs to the field of low-voltage power supply regulation and automatic control. The signal acquisition circuit of the intelligent monitoring system comprises a temperature sensor, a voltage transformer and a current transformer, wherein the temperature sensor is attached to a main power supply cable joint; digital voltage signals of the temperature sensor are output to a single-chip microcomputer; the voltage transformer and the current transformer are arranged on the main power supply cable; the digital voltage signals of the voltage transformer and the current transformer are output to the single-chip microcomputer; a power supply controlling output circuit receives the control signal of the single-chip microcomputer; the circuit breaker of the power supply controlling output circuit is used for controlling the make-and-break of a main power supply circuit; a network transmission module for converting serial port logic standards of a single-chip microcomputer into Ethernet interface logic standards is connected to the communication interface of the single-chip microcomputer. A microprocessor is adopted to serve as a data acquisition and control execution terminal, and is used for acquiring and processing power supply operation signals and cable joint temperature signals, conveying the acquired signals to a central control room through the Internet, and receiving control instructions sent by the central control room, so as to realize remote centralized measure and control.

Description

technical field [0001] The invention relates to an intelligent monitoring system for a low-voltage electric control cabinet based on Internet of Things technology, belonging to the field of low-voltage power supply regulation and automatic control. Background technique [0002] Electric control cabinets with low and medium capacity are common power supply control devices, and are mainly used for small and medium-sized power consumers, such as residential buildings, enterprises and institutions, etc. The maintenance and use of these equipments mostly use electricians to carry out manual inspections. The inspections are often not timely, and abnormal situations cannot be found and checked in a timely manner, and sometimes the equipment is in an unattended operation state. When problems such as the increase of electricity load and partial oxidation of cable joints occur, the heat generation of the cable joints will increase, which can easily cause fires. Due to the problem of ...

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Problems solved by technology

There are many devices for monitoring circuit parameters on the market. They are relatively complicated to install and large in size, and most of them are non-standard special devices. Not suitable for the use of the above enterprises and institutions

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