引用本文:瞿惠琴, 谷永先, 吴孔培, 叶倩.低功耗交直流小功率测量系统的设计与实现[J].西南大学学报(自然科学版),2019,41(5):149~154
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低功耗交直流小功率测量系统的设计与实现
瞿惠琴, 谷永先, 吴孔培, 叶倩
无锡职业技术学院 物联网技术学院, 江苏 无锡 214121
摘要:
对交直流小功率测量电路的工作原理及功率测量算法进行研究,基于低功耗微处理器MSP430F5529、低功耗直流功率计量芯片INA226和交流功率计量芯片HLW8012设计了交直流小功率测量系统.系统能自动识别输入的电源类型,交流电源(1 V~5 V)或直流电源(200 mV~30 V)输入时,调整负载,能够测量40 mW~1 W的有功功率,测量误差小于1%.系统中交直流功率测量模块采用串联接法,有效简化了软硬件设计,降低系统功耗,系统电路功耗小于30 mW.
关键词:  功率测量|交直流功率|MSP430F5529|低功耗|电源类型识别
DOI:10.13718/j.cnki.xdzk.2019.05.021
分类号:TL362+.2
基金项目:国家自然科学基金项目(61502204);江苏省高校品牌专业建设工程项目(PPZY2015C240).
Design and Implementation of a Low-Power Measurement System for Low AC/DC Power Consumption
QU Hui-qin, GU Yong-xian, WU Kong-pei, YE Qian
School of Internet of Things Technology, Wuxi Institute of Technology, Wuxi Jiangsu 214121, China
Abstract:
The working principle and power measurement algorithm of small power measurement circuits of alternating current (AC) or direct-current power (DC) are studied. Based on the low-power microprocessor MSP430F5529, the low-power DC power metering chip INA226 and the AC power metering chip HLW8012, an AC and DC power measurement system is designed. The system can automatically recognize the input power type. With the input of AC (1 V-5 V) or DC (200 mV-30 V) power supply, it can measure the active power of 40 mW-1 W for different loads, and the measurement error is less than 1%. The series connection of the AC and DC power measurement modules effectively simplifies the software and hardware design of the system, and reduces the system power consumption. The power consumption of this system is less than 30 mW.
Key words:  power measurement|AC/DC power|MSP430F5529|low-power consumption|power source type identification
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