The Design of Real-time Power Detection System in Communication Equipment

Communications equipments' voltage, current fluctuations and power changes will bring uncertain hazards in communication systems, monitoring each functional unit's power is necessary. However, communication equipment's power supply has characteristics such as high transient and wide-scale fluctuations, which increases the difficulty of monitoring the power output. This paper introduces a design of an accurate real-time detection of each functional unit's power in communications equipment. The design uses dedicated power detection chip LTC4151 as the core components of the power collection, the LTC4151 which has wide range and high DC voltage input can measure output power, determine and make alarm processing under the management of the micro-controller. The hardware and software design of system are described in detail. The design has high reliability which solved the problem of monitoring communication equipment's power under the complex environment with simple circuit.