Research On Coal Mine Water Inrush On Online Detection System Based On DSP

China’s coal mining industry in recent decades, increasing the degree of exploitation is increasing, resulting in coal mining area terrain structure has undergone significant changes, different aquifers displacement movement, resulting in some areas of coal mine water inrush, Mine to bring a series of serious consequences, the destruction of coal mine was flooded coal mine workers’safety is threatened. In order to prevent water inrush accident occurred, it should be through the crust to detect changes in all kinds of different areas of the aquifer and the water has not happened a lot of penetration, if changed, according to the collected data and databases back comparative analysis should eventually give the corresponding results and issued a warning. With the rapid development of semiconductor technology and sensor technology, so as to achieve water quality monitoring technology is possible, this paper presents a DSP-based study of coal mine and online testing system.In this article, describes the reality of coal mine water inrush and the main reason for its occurrence, this paper introduces the laser-induced fluorescence spectroscopy monitoring technology. Laser-induced fluorescence technology, is designed based on the fluorescence spectrum monitoring DSP subsystem hardware used in405nm wavelength laser emits a laser hit the water samples, the excited fluorescence received by the photomultiplier tube, and then sampled via a signal processing circuit and the24AD analog-digital conversion circuit, through485to the host machine. In order to realize the dynamic change monitoring water quality. It also designed the electrical conductivity and PH monitoring water quality monitoring subsystem design. On the software transplanted UCOS_Ⅱ real-time operating system, using ModBus protocol on the communication protocol, reducing the error rate of the system of communication, improve the system of Reliability.In this paper, the specific design of DSP-based coal mine and online testing system, and the system has been set up experimental test system for five different water samples were sampled comparison. Test results show that this study has made some achievement, hardware acquisition system developed to meet the requirements of the subject.