摘 要:介绍了一种基于F M 的低压电力线门禁系统实现方法,在分析并建立F M 数学模型的基础上,设计了F M 调频发射机与F M 调频接收机。该系统可以解决目前专线门禁系统和无线门禁系统的不足,进一步推进了门禁系统的实用性。实际应用结果证明,该门禁系统成本低、灵活、可靠。
Abstract: This paper presents an implementation method of low-voltage power line access control system based on FM. In the analysis and setting up FM mathematical model, designs FM transmitter and FM receiver. In the communication protocol support, MCU controls signal generation and decodes of the received signal. The system can resolve the current shortcomings of special communication line and wireless access control system,further advance the usefulness of the access control system. The practical application of the results show that the access control system are low cost,flexible and reliable.