介绍了一款具备输出功率监控的汽车电源接口的设计.设计中采用了宽范围、高直流电压输入的专用功率检测芯片LTC4151作为功率采集核心部件,在微控制器的管理下对输出功率测量、判断并作出报警处理.详细介绍了接口的硬件及软件设计.该设计很好的解决了汽车电源复杂环境的监控问题,电路简洁,可靠性高. The design of a car power interface with output power monitoring is introduced.The LTC4151 is designed as a core part of power harvesting with a wide range of high DC voltage input. The output power is measured under the control of a microcontroller, Judge and make alarm processing.The hardware and software design of the interface are introduced in detail.The design solves the problem of monitoring the complicated environment of automotive power supply, the circuit is simple and the reliability is high.