概述

　　北方每年供暖季都出现供暖冷热不均的问题，一方面造成资源的浪费，一方面又因供暖温度不达标遭到用户的不断投诉。供暖数据采集器安放在每个入户单元的供热管道内，采集入水管道和出水管道内的水压和温度，然后通过无线把每个采集点的数据传输到汇集节点，汇集节点通过3G传输给后台进行监控。方案采用大容量3200mAH电池供电，由低功耗MCU、无线芯片，温度采集芯片和压力模块构成。产品要求电池要保证整个供暖季正常工作，此方案如两分钟采集一次能保证电池使用六个月，完全能满足产品的需求。

　　优势

　　· 低功耗32位MCU (EFM32HG210F32-QFN32)有8通道12位ADC采集，可在EM1睡眠模式下完成水压采集，温度采集和无线发送数据的功能，功耗仅45uA/MHz;此芯片具有32K FLASH，4K RAM，21个GPIO，满足此方案的需求而且留有余量以备后续升级。

【EFM32HG210F32-QFN32】

具有 EFM32HG210F32-QFN32 ARM Cortex-M0+ USB 的 32位微控制器

EFM32HG210F32-QFN32 是具有 USB 的基于 ARM Cortex-M0+ 的微控制器 (MCU)，速度可达 25 MHz，是 Happy Gecko 节能设备系列的一部分。建立在低能耗平台之上，该低能耗平台包括创新型低能耗技术、快速唤醒时间和最适合能源敏感应用的节能模式 EFM32HG210F32-QFN32。另外，本设备包括 32 kB 闪存、4 B RAM、24 数字 I/O 引脚、3 x 16 位定时器和多种通信接口。

规格摘要

MCU 内核：ARM Cortex-M0+ MHz：25 闪存 (kB)：32 RAM (kB)：4 I²S：1 SPI：2 I²C：1 UART：3 USART：2 USB：否 数字 I/0 引脚：24 ADC：12 位、4 通道、1 Msps DAC：— LCD：否 封装类型：QFN32 封装尺寸：6 × 6

EFM32 Happy Gecko Family EFM32HG Data Sheet

The EFM32 Happy Gecko MCUs are the world’s most energyfriendly microcontrollers.

The EFM32HG offers unmatched performance and ultra low power consumption in both active and sleep modes. EFM32HG devices consume as little as 0.6 μA in Stop mode and 127 μA/MHz in Run mode. It also features autonomous peripherals, high overall chip and analog integration, and the performance of the industry standard 32-bit ARM CortexM0+ processor, making it perfect for battery-powered systems and systems with highperformance, low-energy requirements.

EFM32HG applications include the following:

• Energy, gas, water and smart metering

• Health and fitness applications

• Smart accessories

• Alarm and security systems

• Industrial and home automation

KEY FEATURES

• ARM Cortex-M0+ at 25 MHz

• Ultra low power operation

• 0.6 μA current in Stop (EM3), with brown-out detection and RAM retention

• 51 μA/MHz in EM1

• 127 μA/MHz in Run mode (EM0)

• Fast wake-up time of 2 µs

• Hardware cryptography (AES)

• Up to 64 kB of Flash and 8 kB of RAM

Feature List

• ARM Cortex-M0+ CPU platform

• High Performance 32-bit processor @ up to 25 MHz

• Wake-up Interrupt Controller

• Flexible Energy Management System

• 20 nA @ 3 V Shutoff Mode

• 0.6 µA @ 3 V Stop Mode, including Power-on Reset, Brown-out Detector, RAM and CPU retention

• 0.9 µA @ 3 V Deep Sleep Mode, including RTC with 32.768 kHz oscillator, Power-on Reset, Brown-out Detector, RAM and CPU

retention

• 51 µA/MHz @ 3 V Sleep Mode

• 127 µA/MHz @ 3 V Run Mode, with code executed from flash

• 64/32 kB Flash

• 8/4 kB RAM

• Up to 37 General Purpose I/O pins

• Configurable push-pull, open-drain, pull-up/down, input filter, drive strength

• Configurable peripheral I/O locations

• Up to 16 asynchronous external interrupts

• Output state retention and wake-up from Shutoff Mode

• 6 Channel DMA Controller

• 6 Channel Peripheral Reflex System (PRS) for autonomous inter-peripheral signaling

• Hardware AES with 128-bit keys in 54 cycles

• Timers/Counters

• 3× 16-bit Timer/Counter

• 3×3 Compare/Capture/PWM channels

• Dead-Time Insertion on TIMER0

• 1× 24-bit Real-Time Counter

• 1× 16-bit Pulse Counter

• Watchdog Timer with dedicated RC oscillator @ 50 nA

• Communication interfaces

• Up to 2× Universal Synchronous/Asynchronous Receiver/Transmitter

• UART/SPI/SmartCard (ISO 7816)/IrDA/I2S

• Triple buffered full/half-duplex operation

• Low Energy UART

• Autonomous operation with DMA in Deep Sleep Mode

• I2C Interface with SMBus support

• Address recognition in Stop Mode

• Low Energy Universal Serial Bus (USB) Device

• Fully USB 2.0 compliant

• On-chip PHY and embedded 5V to 3.3V regulator

• Crystal-free operation

• Ultra low power precision analog peripherals

• 12-bit 1 Msamples/s Analog-to-Digital Converter

• 4 single-ended channels/2 differential channels

• On-chip temperature sensor

• Current Digital-to-Analog Converter

• Selectable current range between 0.05 and 64 µA

• 1× Analog Comparator

• Capacitive sensing with up to 5 inputs

• Supply Voltage Comparator

• Ultra efficient Power-on Reset and Brown-Out Detector

• Debug Interface

• 2-pin Serial Wire Debug interface

• Micro Trace Buffer (MTB)

• Pre-Programmed USB/UART Bootloader

• Temperature range -40 to 85 ºC

• Single power supply 1.98 to 3.8 V

• Packages:

• CSP36 (3×3 mm)

• QFN24 (5×5 mm)

• QFN32 (6×6 mm)

• TQFP48 (7×7 mm)

EFM32HG系列：

EFM32HG108F32-B-QFN24

EFM32HG108F64-B-QFN24

EFM32HG110F32-B-QFN24

EFM32HG110F64-B-QFN24

EFM32HG210F32-B-QFN32

EFM32HG210F64-B-QFN32

EFM32HG222F64-B-QFP48

EFM32HG222F32-B-QFP48

EFM32HG308F32-B-QFN24

EFM32HG308F64-B-QFN24

EFM32HG309F32-B-QFN24

EFM32HG309F64-B-QFN24

EFM32HG310F32-B-QFN32

EFM32HG310F64-B-QFN32

EFM32HG321F32-B-QFP48

EFM32HG321F64-B-QFP48

EFM32HG322F32-B-QFP48

EFM32HG322F64-B-QFP48

EFM32HG350F32-B-CSP36

EFM32HG350F64-B-CSP36

　　· 温度传感器(Si7053)，精度为±0.3 ºC (max)，3*3mm的小体积节约PCB空间，可提供完整的参考代码，让开发更简单，且成本低。

【Si7053】

带 I2C 接口的 Si7053 数字温度传感器

Si7053 数字温度传感器可在整个工作电压和 -40 至 125 °C 的温度范围内提供行业领先的低功耗以及 ±0.3 °C 的最大精确度。Si7053 完全由工厂校准，并采用 DFN6 封装。

规格摘要

温度精度 - 典型值 (C)：±0.2

温度精度最大值 (C)：±0.3

封装类型：DFN6

温度范围下限 (ºC)：-40

温度范围上限 (ºC)：125

Features

> High Accuracy TemperatureSensors

》Si7051: ±0.1 °C (max)

》Si7053: ±0.3 °C (max)

》Si7054: ±0.4 °C (max)

》Si7055: ±0.5 °C (max)

》Si7050: ±1.0 °C (max)

> Wide operating voltage(1.9 to 3.6 V)

> –40 to +125 °C operating range

> Accuracy maintained over the entire operating temperature and voltage range

> Low Power Consumption

》195 nA average current @ 1 Hz sample rate

> 14-bit resolution

> Factory calibrated

> I2C interface

> 3x3 mm DFN package

Applications

> HVAC/R

> Thermostats

> White goods

> Computer equipment

> Portable consumer devices

> Asset tracking

> Cold chain storage

> Battery protection

> Industrial controls

> Medical equipment

Description

The Si705x Digital Temperature Sensors offer industry-leading low power consumption and high accuracy across the entire operating voltage and temperature range. These monolithic CMOS ICs feature a band-gap temperature sensor element, an analog-to-digital converter with up to 14- bit resolution, signal processing, calibration data, and an I2C interface.

The patented use of novel signal processing and analog design enables the sensors to maintain their accuracy over a wide temperature and voltage range, while consuming very little current.

The temperature sensors are factory-calibrated and the calibration data is stored in the on-chip non-volatile memory. This ensures that the sensors are fully interchangeable, with no recalibration or software changes required.

The Si705x devices are available in a 3x3 mm DFN package, and the industry-standard I2C interface can operate at up to 400 kHz. Requiring just 195 nA of average current when sampled once per second, the Si705x can operate for several years with just a single coin cell battery.

The Si705x devices offer an accurate, low-power, factory-calibrated digital solution ideal for measuring temperature in applications ranging from HVAC/R and asset tracking to industrial and consumer platforms.

Functional Block Diagram

　　· 高精度30 MHz晶振(X1E000021048111)是专用晶振，负载电容12pF，精度±10ppm，具有频率稳定、体积小、受温度影响小的特点。

· 高性能低功耗无线芯片(Si4438)，数据传输频段425MHz -525MHz，发射功率为+20dBm，接收灵敏度-124dBm，链路预算144 dBm，超强的链路预算能实现放在井盖下传输的需求。40nA的休眠模式电流，3mA RX(with DSA)的接收电流，延长了电池的使用寿命。

【Si4438】

HIGH-PERFORMANCE, LOW-CURRENT TRANSCEIVER

Features

> Frequency range = 425–525 MHz

> Receive sensitivity = –124 dBm

> Modulation

》(G)FSK

》OOK

> Max output power

》+20 dBm

> Low active power consumption

》14 mA RX

> Ultra low current powerdown modes

》30 nA shutdown, 50 nA standby

> Data rate = 100 bps to 500 kbps

> Fast wake and hop times

> Power supply = 1.8 to 3.6 V

> Excellent selectivity performance

》58 dB adjacent channel

》75 dB blocking at 1 MHz

> Antenna diversity and T/R switch control

> Highly configurable packet handler

> TX and RX 64 byte FIFOs

> Auto frequency control (AFC)

> Automatic gain control (AGC)

> Low BOM

> Low battery detector

> Temperature sensor

> 20-Pin QFN package

> IEEE 802.15.4g ready

> China regulatory

Applications

> China smart meters

Description

Silicon Laboratories' Si4438 is a high-performance, low-currenttransceivers covering the sub-GHz frequency bands from 425 to525 MHz. The Si4438 is targeted at the Chinese smart meter market andis especially suited for electric meters. This device is footprint- andpin-compatible with the Si446x radios, which provide industry-leadingperformance for worldwide sub-GHz applications. The radios are part ofthe EZRadioPRO® family, which includes a complete line of transmitters,receivers, and transceivers covering a wide range of applications. Allparts offer outstanding sensitivity of –124 dBm while achieving extremelylow active and standby current consumption. The 58 dB adjacent channelselectivity with 12.5 kHz channel spacing ensures robust receiveoperation in harsh RF conditions. The Si4438 offers exceptional outputpower of up to +20 dBm with outstanding TX efficiency. The high outputpower and sensitivity results in an industry-leading link budget of 144 dBallowing extended ranges and highly robust communication links.

Functional Block Diagram

　　相关元件供应

　　型号：SI7053-A20-IMR                    品牌：SILICON LABS

　　型号：SI4438-C2A-GM                    品牌：SILICON LABS

　　型号：X1E000021048111                品牌：EPSON

　　型号：SI7053-A20-IM                      品牌：SILICON LABS

　　数据采集终端(型号：AX-F60(EX))主要应用与防爆及有电源等现场环境，是为满足客户以及市场的要求专门设计的一种GPRS终端设备，它保留了AX-的DATA01所有优点之外，更是能使用户真的让设备实时在线，便于用户查看数据和观察现场的情况

　　1、十分钟实时传输数据，电池自供电两年以上;

　　2、采集各管网监测点的累计流量、间隔流量、瞬时流量、压力和各种报警信息;

　　3、计量设备可选用任何厂家的调压柜、气体流量计、压力变送器、电动阀等各种仪表;

　　4、支持各参数上下限报警，突变报警;

　　5、免维护，支持各种参数远程设置;

　　6、现场测控中端存储历史数据;

　　7、远程控制电动阀，方便管理;

　　8、GPRS主通讯，短消息备用通讯，具备远程自动补抄数据功能;

　　9、系统管理软件可对数据进行存储、分析、生成必要的报表和曲线图;

　　1 采用德州MSP430系列单片机设计，超低功耗，内置锂电池供电可达2年以上(视工作模式而定)

　　2 多种通讯方式可选，产品系列覆盖SMS(短信)、GPRS、CDMA

　　3 首家采用金属防爆隔舱式结构，极强的抗干扰能力和防水能力

　　4 采用先进的防雷技术，防雷等级为ITU-TK21

　　5 采用先进的防爆技术，达到燃气行业的标准

　　6 设备具有短信防盗功能

　　7 便携式、小型化、安装维护更为便捷

　　8 宽电压范围设计，更加适应现场工作电源环境

　　9 全新的整机维护概念，使你的工作更为轻松

　　10 采用C/S后台和B/S查询管理软件

　　11 后台管理软件功能强大，使用方便，支持ORCALE,SQL数据库