Description: 设计并制作一个采用IC卡的单相电子式预付费电度表。（1）电能计量准确，精度高，至少达到二级表（误差为2 )的精度。（2）IC卡的保密性高。（3）电度表正常工作时，能显示剩余电能值，已用电能值，使用户直观地了解电度表的工作是否正常及用电负荷的大小。（4）具有掉电保护功能。-Design and the use of IC cards to produce a single-phase electronic prepaid watt-hour meter. (1) accurate power measurement, high precision, at least two tables (a margin of error of 2 ) accuracy. (2) IC card with high confidentiality. (3) normal working hours watt-hour meter showing the remaining power value, the value has power to allow users an intuitive understanding of the work of watt-hour meters are in working order and the size of load. (4) has a brown-out protection. Platform: |
Size: 3586048 |
Author:cwyctz |
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Description: HT7038 系列多功能高精度三相电能专用计量芯片，适用于三相三线和三相四线应用。 HT7038 集成了 6路二阶sigma-delta ADC 、参考电压电路以及所有功率、能量、有效值、功率因数及频率测量的数字信号处理等电路，能够测量各相以及合相的有功功率、无功功率、有功能量及无功能量，同时还能测量各相电流、电压有效值、功率因数、相角、频率等参数，充分满足三相复费率多功能电能表的需求。(HT7038 series of multi-functional and high-precision three-phase power metering chips are suitable for three-phase three-wire and three-phase four-wire applications. HT7038 integrates six second-order sigma-delta ADC, reference voltage circuit and digital signal processing circuits for all power, energy, RMS, power factor and frequency measurements. It can measure active power, reactive power, active and non-functional quantities of phases and phases, and also can measure parameters such as current, voltage RMS, power factor, phase angle and frequency of phases. It can fully meet the needs of three-phase multi-rate multi-functional watt-hour meter.) Platform: |
Size: 1789952 |
Author:红烛 |
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