面向煤机自供电无线监测装置的设计与实现

发布时间：2018-06-04 21:31

本文选题：在线状态监测 + 低功耗　；参考：《中北大学》2017年硕士论文

【摘要】：煤炭对于当今中国社会来说是重要的生产要素之一,煤机的自动化水平直接关系着煤矿的生产效率和生产安全。矿用机械中的掘进机之类的旋转型机械,在工作过程中很容易受到煤层的各种撞击,进而会导致矿用煤机出现机械系统的故障,其故障往往表现为异常的振动和温度变化,因此对于煤机在工作过程中的振动和温度状态进行监测就非常重要了。而传统的煤机监测方式一般为有线测量,但是有线的测量方式由于跟旋所导致线路缠绕等问题不能广泛实施,无线传感(WSN)技术能够有效地解决监测设备跟旋难题。但是在无线传感设备中基本都是由电池来负责提供能量,电池的电量又给无线设备的持续工作能力带来了限制,对于已经安装到煤机中的无线传感设备的电池进行更换和充电更是成本巨大。因此对于具有自供电功能的无线传感器终端设备的关键技术进行研究具有很大的现实意义。本文以研究在线监测采煤机械工作状态的设备所需关键技术为目的,在调研了所需自供电及无线传感技术要求的基础上,完成了系统样机的设计。首先,我们针对发电器件设计了专用的能源管理电路;而后,我们采用Spartan 6 FPGA芯片作为核心控制模块;采用了数字式温度传感器DS18B20设计温度传感模块,在-20℃~80℃范围内的测量精度可以达到±0.5℃;基于数字式加速度传感器ADXL345设计振动传感模块,其最高采样率能够达到3.2KHz;无线通信模块采用蓝牙芯片CC2540完成低功耗、小范围的传感数据传输。通过动态功耗管理技术完成系统运行逻辑的设计,基于ISE平台完成程序编写和调试。最后通过一系列的实验验证了系统方案中所设计的功能,整体功耗不足一百毫瓦,能够保障20米范围的有效数据传输距离,基本实现了预期的设计目标。
[Abstract]:Coal is one of the important factors of production in today's Chinese society. The automation level of coal machine is directly related to the production efficiency and production safety of the coal mine. The rotary machine such as the driving machine in the mining machinery is easily impacted by various kinds of coal seam impact in the working process, which will lead to the mechanical system of coal mining machine. Fault, the fault often shows abnormal vibration and temperature change, so it is very important to monitor the vibration and temperature state of the coal machine during the working process. And the traditional coal machine monitoring mode is usually wired, but the cable measurement method can not be widely carried out because of the winding caused by the winding. Sensing (WSN) technology can effectively solve the problem of monitoring equipment heel. But in the wireless sensor equipment, the battery is basically responsible for providing energy. The battery's power is also limited to the continuous working capacity of the wireless device. It is more cost to replace and charge the battery for the wireless sensor equipment installed in the coal machine. Therefore, it is of great practical significance to study the key technology of the wireless sensor terminal equipment with self power supply function. This paper aims at the key technology needed to study the equipment for on-line monitoring of the working state of the mining machinery. On the basis of investigating the requirements of the required self power supply and wireless transmission technology, the system sample has been completed. First, we design a special energy management circuit for the power generation device; then we use Spartan 6 FPGA chip as the core control module; the digital temperature sensor DS18B20 is used to design the temperature sensing module, and the measurement precision can reach to 0.5 degrees C in the range of ~80 centigrade at -20 C; based on the digital acceleration transmission. Sensor ADXL345 design vibration sensing module, its maximum sampling rate can reach 3.2KHz; wireless communication module uses Bluetooth chip CC2540 to complete low power, small range sensing data transmission. Through dynamic power management technology to complete system operation logic design, based on the ISE platform completed program writing and debugging. Finally, through a series of real. The function designed in the system scheme is verified. The overall power consumption is less than one hundred milliwatts, and the effective data transmission distance of the 20 meter range can be guaranteed, and the expected design goal is basically realized.
【学位授予单位】：中北大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD63

【参考文献】