原标题：基于ST STPM32TR无线蓝牙模块的智能电量计方案

　　用于家庭自动化和物联网应用的STEVAL-BLUEPLUG1评估板旨在帮助您开发自己的家庭或楼宇自动化子系统，用于能源管理，采用小型化解决方案，可轻松集成到家庭和楼宇电气系统中。该板符合蓝牙低功耗(BLE)规范4.2，允许??将计量数据从特定电气负载安全地传输到具有BLE支持的智能手机。您可以使用智能手机的Android应用程序显示能量测量参数，并向智能插头板发送调光和调度命令。

　　该电路板嵌入了STPM32计量芯片，可使用分流电流传感器和基于VIPER06X的非隔离降压转换器电源，对电力线系统中的功率和能量进行高精度测量。三端TRIAC通过AC开关电流。您还可以通过专用连接器将电路板与支持NFC的EEPROM连接。

　　场景应用图

　　展示板照片

　　方案方块图

　　核心技术优势

　　◾智能电表设计，无线连接

　　◾BLE(蓝牙低功耗)v4.2连接：用于能耗仪表板的智能手机连接，设备控制

　　◾调光：可以控制一些负载。 例如，AC Induction风扇转速，加热器，白炽灯

　　◾定时功能：设置负载ON或OFF的时间

　　◾NFC接口：配置设计，存储日志

　　方案规格

　　◾额定电压：240 VAC(典型值)

　　◾额定电流：12 A(典型值)

　　◾插头功耗：1.6 W(最大)

　　◾瞬时和平均功率

　　◾RMS和瞬时电压和电流

　　◾Radio认证：

　　FCC认证：S9NSPBTLE1S

　　IC认证：8976C-SPBTLE1S

　　◾CE认证

　　◾RoHS和中国RoHS合规

　　技术文档

　　【STPM32】

　　ASSP for metering applications with up to four independent 24-bit 2nd order sigma-delta ADCs, 4 MHz OSF and 2 embedded PGLNA

　　The STPM3x is an ASSP family designed for high accuracy measurement of power and energies in power line systems using the Rogowski coil, current transformer or shunt current sensors. The STPM3x provides instantaneous voltage and current waveforms and calculates RMS values of voltage and currents, active, reactive and apparent power and energies. The STPM3x is a mixed signal IC family consisting of an analog and a digital section. The analog section consists of up to two programmable gain low-noise low-offset amplifiers and up to four 2nd order 24-bit sigma-delta ADCs, two bandgap voltage references with independent temperature compensation, a low drop voltage regulator and DC buffers. The digital section consists of digital filtering stage, a hardwired DSP, DFE to the input and a serial communication interface (UART or SPI). The STPM3x is fully configurable and allows a fast digital system calibration in a single point over the entire current dynamic range.

　　主要特性

　　Active power accuracy:

　　< 0.1% error over 5000: 1 dynamic range

　　< 0.5% error over 10000: 1 dynamic range

　　Exceeds 50-60 Hz EN 50470-x, IEC 62053-2x, ANSI12.2x standard requirements for AC watt meters

　　Reactive power accuracy:

　　< 0.1% error over 2000:1 dynamic range

　　Dual mode apparent energy calculation

　　Instantaneous and averaged power

　　RMS and instantaneous voltage and current

　　Under and overvoltage detection (sag and swell) and monitoring

　　Overcurrent detection and monitoring

　　UART and SPI serial interface with programmable CRC polynomial verification

　　Programmable LED and interrupt outputs

　　Four independent 24-bit 2nd order sigma-delta ADCs

　　Two programmable gain chopper stabilized low-noise and low-offset amplifiers

　　Bandwidth 3.6 kHz at -3 dB

　　Vcc supply range 3.3 V ± 10%

　　Supply current Icc 4.3 mA (STPM32)

　　Input clock frequency 16 MHz, Xtal or external source

　　Twin precision voltage reference: 1.18 V with independent programmable TC, 30 ppm/°C typ.

　　Internal low drop regulator at 3 V (typ.)

　　QFN packages

　　Operating temperature from 40 °C to +85 °C

　　【VIPER06】

　　VIPerPlus family: Energy saving high voltage converter for direct feedback

　　The VIPER06 is an offline converter with an 800 V avalanche rugged power section, a PWM controller, a user-defined overcurrent limit, open-loop failure protection, hysteretic thermal protection, soft startup and safe auto-restart after any fault condition. The device is able to power itself directly from the rectified mains, eliminating the need for an auxiliary bias winding. Advanced frequency jittering reduces EMI filter cost. Burst mode operation and the device’s very low power consumption both help to meet the standards set by energy-saving regulations.

　　主要特性

　　800 V avalanche rugged power section

　　PWM operation with frequency jittering for low EMI

　　Operating frequency:

　　30 kHz for VIPER06Xx

　　60 kHz for VIPER06Lx

　　115 kHz for VIPER06Hx

　　No need for an auxiliary winding in low-power applications

　　Standby power < 30 mW at 265 VAC

　　Limiting current with adjustable set point

　　On-board soft-start

　　Safe auto-restart after a fault condition

　　Hysteretic thermal shutdown