| Safety monitoring and control system is an indispensable and important part of large mechanical crawler crane. Crawler crane safety monitoring and control system can not only improve the safety performance of crawler crane, but also enhance crawler crane working efficiency. Then, how to develop stable and reliable crawler crane safety monitoring and control system has become a hot issue which crawler crane manufacturers are concerned with in recent years.After researching on domestic and foreign crane's safety monitoring and control system, this paper adopts high-performance SoC ADuC842 to develop a crawler crane safety monitoring and control system, which has the basic functions of detecting state, controlling and alarming, as well as the function of a Chinese dot-matrix LCD displaying and recording overload. The key parts of hardware are presented in detail, and the system software developed by C language, is given in the paper, which meets user's function requirements. According to the practical need in the process of developing and debugging the system, a new type of weighting sensor with novel structure is designed, which can be installed in practical project easily. The sensor tested in practice indicates that it meets the basic function requirements.In order to improve the system reliability and real-time, and perfect the further development of the system functions, the embedded operating systemμC / OS-Ⅱis introduced, which is transplanted onto the ADuC842. Then, system tasks are designed according to crawler crane safety monitoring and control system requirements and message-box communication mechanisms is used to achieve the communication between the various tasks, which is a favorable foundation to improve and upgrade the system further.
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