Electrical line fire early warning Internet-of-Things sensing terminal and system based on current mutual inductance

Abstract

The invention provides an electrical line fire early warning Internet-of-Things sensing terminal and system based on current mutual inductance. The terminal comprises a sensing unit, a host and a current transformer. The sensing unit comprises three temperature sensors respectively for detecting the temperature of a measuring point and the environment temperature of an incoming binding post and the surface temperature of the incoming line, a humidity sensor and a smoke sensor; the host is used for obtaining temperature, humidity and smoke data collected by the sensing unit and uploading the temperature, the humidity and the smoke data to an upper computer device; the current transformer is used for charging a built-in super-capacitor of the host by inducing current of a firing line of a user and providing electric energy for the host and the sensing unit through the super-capacitor. The terminal can realize electrical fireproof terminals and systems that are simple to install, do not need wiring or have as little wiring as possible; meanwhile, the various sensors of the terminal can provide a data foundation for subsequent data processing and application such as big data analysis based on the Internet of Things.

Description

technical field [0001] The invention relates to the technical field of fire early warning of electrical circuits, in particular to an electrical circuit fire early warning IoT sensing terminal and system based on current mutual inductance. Background technique [0002] The electrical fire products and systems currently on the market are characterized by the need to install a large number of equipment and instrumentation sensors or to modify the lines, which puts forward high requirements for a large number of installation and use. Therefore, these products are suitable for use in newly-built buildings, and it is impossible to rewire old buildings regardless of construction conditions and costs. Old buildings have become blind spots and hard-hit areas for electrical fires. In addition, the products are mainly concentrated in the process of accidents or in the stage of fire accidents; and the power supply of sensors is generally powered by dry batteries or lithium batteries or...

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Problems solved by technology

Therefore, these products are suitable for use in newly-built buildings, and it is impossible to rewire old buildings regardless of construction conditions and costs. Old buildings have become blind spots and hard-hit areas for electrical fires

In addition, the products are mainly concentrated in the process of accidents or in the stage of fire accidents; and the power supply of sensors is generally powered by dry batteries or lithium batteries or direct wiring, because the external power supply cannot provide continuous power supply, and construction requires power outages, Long-term battery work is unsafe and cannot be used in large-scale practical applications; in addition, the power supply mode of dry batteries or lithium batteries is limited and the continuity is limited. It is not suitable for continuous fire monitoring and alarming of buildings in application scenarios where the collection frequency and communication requirements are not intensive.

[0003] In addition, due to the fleeting nature of electrical circuit fires, the fire monitoring system is required to make timely judgments and early warnings for the application scenarios. The frequency of collection and communication requirements are relatively high, and the power supply method of dry batteries or lithium batteries is not suitable for their applications, let alone Installing one sensing terminal density per floor, battery replacement is a huge workload, and subsequent maintenance costs are high

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