Node temperature detection device applied to underground coal mine high-explosive switch cabinet

Abstract

The invention relates to a node temperature detection device applied to an underground coal mine high-explosive switch cabinet, which is mainly composed of three modules such as wireless temperature sensors, a signal repeater and a temperature measuring host, wherein each module reaches intrinsic safety authentication qualification, temperature variations of each node are monitored accurately in a high-explosive environment, and communication with an upper computer is performed timely. The wireless temperature sensors are responsible for real-time acquisition for the temperature of nodes inside a high-explosive switch and sending the temperature to the signal repeater in a wireless mode; the signal repeater is mainly responsible for receiving probe data, performing off-chip storage, receiving a command sent by the temperature measuring host at the same time, and giving a response and a reply; and the temperature measuring host is mainly responsible for querying data of the controlled signal repeater and the wireless temperature sensors within the specified time, performing display, early-warning and the like, and performing data communication with a surface workstation through the Ethernet at the same time.

Description

technical field [0001] The invention patent mainly relates to a temperature acquisition and transmission system in a high-explosive environment, specifically a detection and communication device for node temperature of high-explosive switchgear in underground coal mines. Background technique [0002] The operating environment of coal mines is characterized by the presence of flammable and explosive gases (such as CH4, CO, H2, etc.), coal dust and other potentially explosive risk factors. According to incomplete statistics, about 30% of coal mine gas and dust explosion accidents, more than 70% of underground fire accidents are caused by sparks from electrical equipment, overheating of mechanical equipment, or ignition of non-metallic materials. In order to prevent gas and coal dust explosion accidents, on the one hand, strict measures must be taken to monitor and control the concentration of underground gas and coal dust; Ignition sources and high-temperature heat sources of...

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Problems solved by technology

At present, there are relatively mature control equipment for the control of electric sparks, but there is no electronic equipment on the market that can effectively detect and monitor the temperature of equipment that can generate high-temperature heat sources such as high-voltage switchgear under mines. At the same time, it needs To meet the requirements of the national standard for explosion-proof grades, especially for the temperature detection of each node in the high-voltage switchgear, not only needs to be accurate and reliable, but also needs to not affect the phase distance under the premise of normal work, which puts more severe demands on the temperature measurement equipment test

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