Metal Detector Embedded Arm-based Control System

The Embedded Computer Technology has been extensively applied in industry domain. Different from the general PC, computers applied in industry domain are special systems embedded inside the controlled object, while the user can only touch its external interface or even does not know its existence at all, those is the embedded system. Based on computer technology, adapted the strict request of the application system to function, reliability, cost, volume and power consume, the embedded system combines hardware and software closely to achieve specific application.The metal detector is widely applied in food processing, the textile apparel industry, the lumber processing industry, the chemical industry, the airport or other security field. Its performance mainly manifests in the two aspects of detect precision and the manoeuvrability which is determinated by the metal detector control realization system. At present, the domestic manufacture of metal detector control system mostly based on 8-bits microprocessor (for example 8051) and its function is simple because of the microprocessor low reference and poor resources.Presently, along with the application system become more and more complex and the development of embedded technology, the embedded control is approaching 32-bits microprocessor gradually, ARM microprocessor is the lead accredited in this field. Due to its high processing speed, high hardware integration, and abundant development resources, ARM microprocessor have become the first choice. The performance promotion enables more complex algorithms to be applied in industry domain and brings more diversity and accessional value to the product. At the same time, the high performance and abundant resources make the embedded operating system in application inevitably. Under the embedded operating system environment, the structural design and...