煤矿井下超宽带脉冲电路的研究与设计
发布时间：2019-03-11 20:37
【摘要】：煤炭是我国的重要能源。由于受地质条件制约,其开采主要以井下为主。矿井多为数百米深,作业地点分散,工作环境恶劣,事故隐患较多。因此探寻一种适合井下无线通信的技术对改善井下安全环境、增强通信能力显得十分重要。超宽带无线通信技术是一种新兴的无线通信技术,与其它无线技术相比,它具有抗干扰能力强、体积小,高速率、穿透性好等特点,更适合煤矿井下特殊环境的通信。该技术主要通过超宽带脉冲进行井下数据通信,这些极窄脉冲要求具有纳秒级甚至皮秒级的快速上升时间,其波形、稳定度都将影响到整个通信系统的可行性,因此超宽带极窄脉冲的产生成为整个通信中的一项关键技术。论文阐述了煤矿井下无线通信技术的研究现状,讨论了超宽带无线通信技术,对常见的超宽带脉冲产生方式和脉冲形式进行了仿真和分析。然后,基于雪崩三极管雪崩特性设计了双管并联的超宽带脉冲产生电路,该电路采用并行同时触发工作模式,加速了雪崩三极管的放电时间,通过增加电感使电路的等效负载增加,通过添加续流二极管,确保其电路的本质安全。接着又针对不同电路参数下的超宽带脉冲电路进行了计算和仿真,分析比较了不同电源电压、不同电路负载、不同充电电容下输出脉冲特性和电路本质安全性能;制作了脉冲产生的硬件电路,对其产生的窄脉冲进行了测试、分析和对比。
[Abstract]:Coal is an important energy source in our country. As a result of the geological condition restriction, its mining is mainly underground. The mine is hundreds of meters deep, the working place is scattered, the working environment is abominable, the accident hidden danger is more. Therefore, it is very important to explore a suitable technology for underground wireless communication to improve the underground safety environment and enhance the communication capability. Ultra-wideband wireless communication technology is a new kind of wireless communication technology. Compared with other wireless technologies, it has the characteristics of strong anti-jamming ability, small size, high speed, good penetration and so on. It is more suitable for the communication of special environment in coal mine. The technology uses ultra-wideband pulse for downhole data communication. These very narrow pulses require a rapid rise time of nanosecond or even picosecond, and their waveforms and stability will affect the feasibility of the whole communication system. Therefore, the generation of ultra-wideband very narrow pulse has become a key technology in the whole communication. In this paper, the research status of underground wireless communication technology in coal mine is described, and the ultra-wideband wireless communication technology is discussed, and the common generation and pulse forms of ultra-wideband pulse are simulated and analyzed. Then, based on the avalanche characteristics of avalanche transistor, an ultra-wideband pulse generation circuit with two parallel tubes is designed. The circuit uses parallel trigger mode to accelerate the discharge time of avalanche transistor. The equivalent load of the circuit is increased by increasing the inductor, and the intrinsic safety of the circuit is ensured by adding the diode. Then the ultra-wideband pulse circuit with different circuit parameters is calculated and simulated, and the output pulse characteristics and the intrinsic safety performance of the circuit are analyzed and compared under different power supply voltage, different circuit load and different charging capacitance. The hardware circuit of pulse generation is made, and the narrow pulse is tested, analyzed and compared.
【学位授予单位】：河南理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TD655;TN925
本文编号：2438605
[Abstract]:Coal is an important energy source in our country. As a result of the geological condition restriction, its mining is mainly underground. The mine is hundreds of meters deep, the working place is scattered, the working environment is abominable, the accident hidden danger is more. Therefore, it is very important to explore a suitable technology for underground wireless communication to improve the underground safety environment and enhance the communication capability. Ultra-wideband wireless communication technology is a new kind of wireless communication technology. Compared with other wireless technologies, it has the characteristics of strong anti-jamming ability, small size, high speed, good penetration and so on. It is more suitable for the communication of special environment in coal mine. The technology uses ultra-wideband pulse for downhole data communication. These very narrow pulses require a rapid rise time of nanosecond or even picosecond, and their waveforms and stability will affect the feasibility of the whole communication system. Therefore, the generation of ultra-wideband very narrow pulse has become a key technology in the whole communication. In this paper, the research status of underground wireless communication technology in coal mine is described, and the ultra-wideband wireless communication technology is discussed, and the common generation and pulse forms of ultra-wideband pulse are simulated and analyzed. Then, based on the avalanche characteristics of avalanche transistor, an ultra-wideband pulse generation circuit with two parallel tubes is designed. The circuit uses parallel trigger mode to accelerate the discharge time of avalanche transistor. The equivalent load of the circuit is increased by increasing the inductor, and the intrinsic safety of the circuit is ensured by adding the diode. Then the ultra-wideband pulse circuit with different circuit parameters is calculated and simulated, and the output pulse characteristics and the intrinsic safety performance of the circuit are analyzed and compared under different power supply voltage, different circuit load and different charging capacitance. The hardware circuit of pulse generation is made, and the narrow pulse is tested, analyzed and compared.
【学位授予单位】：河南理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TD655;TN925
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