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The current railway passenger transport , and reload the rapid development of the repair and maintenance of track put forward new demands , and increase the orbital parameters of the testing and maintenance of transport , railway safety has a profound significance . According to the accuracy requirements of the high-speed line detection and China's actual situation , the absorption of foreign track construction , maintenance, measurement and control experience and advanced technical achievements , research quasi- high-speed railway track absolute coordinate control systems, precision measurement programs and based on existing large tamping long-wave Realignment of the road maintenance machinery technology , the formation of systems science track inspection and maintenance system has become very urgent and important issue . Learn from the Nanchang Railway Bureau, the existing line track geometry parameters to accurately measure the \And on this basis , the use of the smart instrumentation design ideas , the use of the consistency of the laser wavelength , very narrow spectral line width and monochromatic characteristics , combined with the application of laser sensors , developed a convenient , lightweight , high precision and the data show that the orbit of storage and other functions static horizontal distance measuring instrument . Specifically, the main research work in the following areas : (1) from the point of view of the intelligent instrument described in detail track static horizontal distance measuring instrument design process , including mechanical composition , the detection principle , the hardware circuit , software design, technical indicators and sensor selection . Multifaceted discussion to improve the method of detection precision of the system , including system error , random error , the mistake error processing and sensor temperature compensation , correct the system error caused due to a variety of drift , gain instability and other factors , very practical value . (3) in the data acquisition system , anti-interference and reliability design is directly related to the detection system reliability and overall performance . Thus , anti-interference and reliability of the measurement system design is discussed from the aspects of both hardware and software . In addition, the use of the hardware self-test , the voltage monitoring and program parameters self-test technology to increase the reliability of the system . This paper, research results have been verified by experiments , are trying to improve and extend use .
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