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With the development and application of pneumatic technology, pneumatic actuator system integration, the degree of automation, pneumatic production line composition is getting more complicated. A large number of large-scale production line of pneumatic components, complex piping wiring, pneumatic control, execution and auxiliary components often hundreds of individual components failure, in a short period of time to determine the location of the fault element and the cause of the malfunction is very difficult, and thus can not be a short period of time to repair to resume production, resulting in the entire production line to a standstill and produce huge economic losses. To solve this problem, this article utilization pneumatic, wireless data transmission, electronic sensing technology, the development of magnetic core-station test valve as well as economic, practical pneumatic wireless remote fault detection and diagnosis system, the system can real-time monitoring of the operational status of the various pneumatic components, and fault detection and diagnosis, readable message or alarm interface. By integrating test, basically achieve the expected goals. Dissertation research work includes the following aspects: (1) In order to solve the current use of solenoid valve working condition can not be real-time detection of problems, the development of the core generates the magnetic signal with a magnetic sensing element indicates the current spool The position of the magnetic core-the station detect type solenoid valve. Of the products used in pneumatic automation system can be convenient, accurate and real-time feedback pneumatic valve normal or abnormal operating conditions, enabling the monitoring of the state of the solenoid valve, for the detection and fault diagnosis of the overall state of the pneumatic system key components and technical means, this new type of valve has been declared the national invention patent (pneumatic / hydraulic magnetic position detection slide valve, declaration number: 201010146293.6). (2) the pneumatic system rapid wireless remote fault diagnosis and localization of the system architecture. Designed for pneumatic control actuator state collected a wireless transceiver unit, remote master unit. Remote control of the system both pneumatic components, but also to achieve the pneumatic system condition monitoring and fault diagnosis of various components, economic, simple, efficient and accurate. (3) development of a pneumatic system rapid wireless remote fault diagnosis and localization of the test system. Among these, the design of pneumatic vacuum handling mechanical, electrical control circuit, cylinder stroke state detection technology, novel magnetic core-station testing valve state detection technology, work status detection system of pneumatic components; remote fault detection and diagnosis software, developed for real-time status monitoring of the entire pneumatic system, and its interface is friendly and intuitive information. Test indicate that the research and development of new cores formula station detection switching valve can be accurately feedback spool position, the test system can quickly and accurately detect and control the working state of the executive components and fast component failure alarm locate the specific failed component and rapid positioning of the failure of the pneumatic system, which provides a simple and feasible way.
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