Millimeter Wave Antenna Based On ARM Platform Automatic Alignment Head Unit Design

With modern combat systems have become increasingly demanding of information, but also a higher communication equipment requirements. Millimeter-wave communications because of its lobes narrow frequency bandwidth, confidentiality, anti-interference ability, which is widely used in communications, and more and more troops. But it is narrow because of its millimeter wave﹑ directional valve strong result, the antenna aimed at the difficulties the existence of a long-time, or even difficult alignment problems, can not meet the requirements of rapid response. Therefore, an efficient self-aligning device millimeter wave antenna, the antenna rack with the aim to improve the speed, shorten the antenna installation and alignment time frame to ensure the rapid establishment of millimeter-wave communication links and reliability to meet the fast Accurate communication needs. Therefore, this article will be××××millimeter Repeater Antenna Automatic alignment platform for the application background, aligned to develop a fast, high alignment accuracy, real-time millimeter wave antenna strong platform pan Automatic Alignment Unit, to achieve fast and accurate two antennas aligned to ensure the millimeter-wave communication link over a short time.The head unit is designed from the multi-tasking and reliability point of view, a 32-bit ARM7-based LPC2294 microprocessors and real-time multitasking operating system,μC/OS-II head stepper motor control method , the millimeter wave communications equipment rack in the head unit, so that the millimeter-wave communications equipment by head rotation speed alignment.Research work of this paper contains the following sections:1. Introduced the quasi-millimeter wave antenna platform on the automatic head unit (head control unit) of the system composition and functions of principle; demonstrate the system's overall plan: the ARM7 processor and embedded real time operating system (RTOS) phase As the way to the head unit embedded control system design; and identified the LPC2294 hardware design as the core processor to RTOS kernelμC/OS-II as a software platform for software design.2. In the platform system on the basis of functional analysis to determine the modular hardware design; from the functional principles and specific methods for hardware implementation of each module are described. Of the ARM embedded microcontroller system based on a detailed analysis of the design process LPC2294 CPU and system electrical control part of the design process.3. Taking into account the complexity of system functions and the mobile carrier millimeter-wave antenna platform requirements aimed at the improvement of procedures in order to increase functionality and reduce crashes or the program running out and so on, research based onμC / OS-II embedded RTOS System application software platform, the function of each system is divided into different tasks. By the operating system to complete the task scheduling and task synchronization and communication between, to deal with real-time requirements interrupt high asynchronous events, the eventual establishment of a tilt control unit of the RTOS.4. PTZ control through indoor and outdoor unit joint test, and the test conditions and key indicators were tested. Test results show the tilt control unit of the features and technical specifications can meet the system requirements, can in a short time to build stable and reliable millimeter-wave communication links.The automatic alignment platform tilt control unit has been used in the prototype millimeter wave communications equipment through communication on the system running smoothly, aimed at high precision, set up a short time, thus greatly reducing the alignment time millimeter wave communications equipment In a relatively short time millimeter-wave communication links. Meanwhile, the results of the promotion of military research and development of broadband communications equipment and technology has provided technical support, but also point to the field of industrial control applications agency reference value.