Comprehensively protecting measurement and control device for mine

A technology of comprehensive protection and measurement and control devices, applied in the direction of circuit devices, electrical components, etc., can solve the problems of no communication interface, background monitoring obstacles, and thread shedding, etc., and achieve the effect of rich interface resources, fast processing speed, and high reliability

Inactive Publication Date: 2012-04-04
合肥德盛电器有限责任公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the measurement and control devices in the market are separated, and the main unit is separated from the display unit, which may easily lead to failures such as loose contacts and falling off of wire ends. The old-fashioned analog protectors and digital display computer prote

Method used

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  • Comprehensively protecting measurement and control device for mine
  • Comprehensively protecting measurement and control device for mine
  • Comprehensively protecting measurement and control device for mine

Examples

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Example Embodiment

[0008] A comprehensive mine protection measurement and control device, including a central processing unit CPU 1, the central processing unit CPU 1 adopts the LM3S2948 chip, and the signal input ends of the central processing unit CPU 1 are respectively connected to a switch input photoelectric isolation circuit 2 for acquisition Voltage transformer of zero sequence voltage and phase voltage, current transformer used for collecting and measuring current, protection current and zero sequence current, the signal output terminal of CPU1 is connected to switch quantity photoelectric isolation drive output circuit 3 and LCD liquid crystal display respectively 4. It is suitable for use in dark places under the mine. The LCD liquid crystal display 4 adopts the LCD12864 chip. The input and output terminals of the central processing unit CPU1 communicate with the background 7 through the communication interface, which is convenient for the background 7 monitoring, such as figure 1 , 2 , 3...

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Abstract

The invention relates to a comprehensively protecting measurement and control device for a mine. The comprehensively protecting measurement and control device comprises a central processing unit (CPU), wherein the CPU adopts an LM3S2948 chip; the signal input end of the CPU is connected with an on-off input optoelectronic isolation circuit, a voltage transformer and a current transformer respectively; the signal output end of the CPU is connected with an on-off optoelectronic isolation driving output circuit and a liquid crystal display (LCD) respectively; the LCD adopts an LCD12864 chip; and an input/output end of the CPU communicates with a background through a communication interface. As the LM3S2948 chip is adopted, the comprehensively protecting measurement and control device for the mine has high processing speed, rich interface resource, high reliability, low cost and integral design, integrates the displaying, protecting, measuring, computing, controlling and communicating functions, can communicate with the background in real time and is applicable to neutral point ungrounded power supply and power transformation systems with a voltage grade of 10kV and below.

Description

technical field [0001] The invention relates to a measurement and control device, in particular to a mine comprehensive protection measurement and control device. Background technique [0002] At present, the measurement and control devices in the market are separated, and the main unit is separated from the display unit, which may easily lead to failures such as loose contacts and falling off of wire ends. The old-fashioned analog protectors and digital display computer protectors do not use embedded technology, and are bulky. The communication interface cannot form a remote protection and measurement and control system, and the technology is backward, which creates obstacles to the background monitoring and has a certain impact on the electrical safety of the mine. Contents of the invention [0003] The purpose of the present invention is to provide a mining comprehensive protection measurement and control device with high reliability, low cost, integrated design, and re...

Claims

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Application Information

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IPC IPC(8): H02J13/00
Inventor 王锐郭本胜朱富琴
Owner 合肥德盛电器有限责任公司
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