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自动抄表器(AMR)改装模块

概览

描述

随着越来越多的用户要求水表、暖气表和燃气表具备自动抄表(AMR)功能,许多公用事业单位都选择在现有的机械仪表上使用经 MID 认证的“即插即用”改装模块。 相较于在机械仪表寿命到期前就将其全部替换成电子仪表,这是一种非常可行的方案。

虽然下列方案专为机械水表改装模块而开发,但其工作原理与介质无关(适用于暖气表和燃气表),完全兼容电子直驱仪表(无机械齿轮箱)。

系统优势:

  • 灵活的低功耗 MCU 选件减少了 BOM 数量,可以使各种类型的仪表实现单芯片功能:
    • 机械/改装仪表:在配备低成本的 MCU 的简易版改装设计中可同时运行计量(测量能源、水或燃气)和应用(通信协议、数据处理)功能。
    • 带有电子显示屏的仪表:减少外部组件数量,采用带有片上 LCD 控制器的 MCU,为用户提供一个仪表界面,提升其使用体验。
  • 设计灵活,支持使用瑞萨电子其他款 MCU,以适应未来市场趋势,对于复杂的通信方案尤其如此。
  • 降压升压 DC/DC 转换器通过高效利用电池的可用容量,增强了射频收发器的可操作性,并显著地延长了系统寿命。

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4:3 ratio Connected signals line Sheet.262 Sheet.260 Sheet.1 Sheet.2 Sheet.3 Sheet.4 EU001 EU001 EU001 Resistor - Fixed.70 Capacitor Non-polarized .71 Sheet.73 Sheet.74 Diode.75 Sheet.76 Sheet.77 Sheet.78 Ground (earth).79 Sheet.80 Sheet.81 Sheet.82 Sheet.83 Ground (earth).84 Sheet.85 Sheet.86 Sheet.87 Sheet.88 Inductor Coreless (Air conductor).89 Sheet.90 Sheet.91 Sheet.92 Sheet.93 Sheet.94 Sheet.95 Sheet.96 Sheet.97 Sheet.98 Sheet.100 Sheet.101 Sheet.102 Sheet.103 Sheet.104 Sheet.105 Sheet.106 Sheet.107 Sheet.108 Sheet.109 Sheet.110 Sheet.111 Sheet.112 Connector 1.113 Connector 1.114 Connector 1.115 Sheet.116 Sheet.117 Sheet.118 LPF LPF LPF Resistor - Fixed.122 Capacitor Non-polarized .123 Sheet.124 Sheet.125 Diode.126 Sheet.127 Sheet.128 Sheet.129 Ground (earth).130 Sheet.131 Sheet.132 Sheet.133 Sheet.134 Ground (earth).135 Sheet.136 Sheet.137 Sheet.138 Sheet.139 Inductor Coreless (Air conductor).140 Sheet.141 Sheet.142 Sheet.143 Sheet.144 Sheet.145 Sheet.146 Sheet.147 Sheet.148 Sheet.149 Sheet.150 Sheet.151 Sheet.152 Sheet.153 Sheet.154 Sheet.155 Sheet.156 Sheet.157 Sheet.158 Sheet.159 Sheet.160 Sheet.161 Sheet.162 Connector 1.163 Connector 1.164 Connector 1.165 Sheet.166 Sheet.167 Sheet.168 LPF LPF LPF Resistor - Fixed.171 Capacitor Non-polarized .172 Sheet.173 Sheet.174 Diode.175 Sheet.176 Sheet.177 Sheet.178 Ground (earth).179 Sheet.180 Sheet.181 Sheet.182 Sheet.183 Ground (earth).184 Sheet.185 Sheet.186 Sheet.187 Sheet.188 Inductor Coreless (Air conductor).189 Sheet.190 Sheet.191 Sheet.192 Sheet.193 Sheet.194 Sheet.195 Sheet.196 Sheet.197 Sheet.198 Sheet.199 Sheet.200 Sheet.201 Sheet.202 Sheet.203 Sheet.204 Sheet.205 Sheet.206 Sheet.207 Sheet.208 Sheet.209 Sheet.210 Sheet.211 Connector 1.212 Connector 1.213 Connector 1.214 Sheet.215 Sheet.216 Sheet.217 LPF LPF LPF Buck-Boost Buck-Boost Buck-Boost Sensors * Hot water meter: 1x temperature sensor *Heat meter: 2x temperature sensors *Gas meter: 1x temperature sensors (various), 1x pressure sensors (optional) Sensors Hot water meter: 1x temperature sensor Heat meter: 2x... Sensors· Hot water meter: 1x temperature sensor· Heat meter: 2x temperature sensors· Gas meter: 1x temperature sensors (various), 1x pressure sensors (optional) Ground (earth) Sheet.234 Sheet.235 Sheet.236 Sheet.237 Battery 1-Cell Sheet.239 Sheet.240 Line 1pt.1552 Line 1pt.1583 Antenna Sheet.244 Sheet.245 Sheet.246 Sheet.247 Sheet.248 Sheet.249 Sheet.250 Sheet.251 Vext Vext Vext Planar Coil Planar Coil Planar Coil Vext Vext Vext Planar Coil Planar Coil Planar Coil Vext Vext Vext Planar Coil Planar Coil Planar Coil Sheet.261 + - ± ± Sheet.269 Sheet.275 Sub-GHz Radio for Meter AMR Applications Sub-GHz Radio for Meter AMR Applications Sub-GHz Radio for Meter AMR Applications Circle LCD/LED Segment Display Sheet.281 Sheet.282 Sheet.283 Sheet.284 Sheet.285 Sheet.286 Sheet.287 Sheet.288 Sheet.289 Sheet.290 Sheet.291 Sheet.292 Sheet.293 Sheet.294 Sheet.295 Sheet.296 Sheet.297 Sheet.298 Sheet.299 Sheet.300 Sheet.301 Sheet.302 Sheet.303 Sheet.304 Sheet.305 Sheet.306 Sheet.307 Sheet.308 Sheet.309 Sheet.310 ON ON Sheet.311 OFF OFF Sheet.312 Sheet.313 Sheet.314 Sheet.315 Sheet.316 Sheet.317 Sheet.318 Sheet.319 Optional, just needed for purely electronic Optional, just needed for purely electronic meters (no gear b... Optional, just needed for purely electronicmeters (no gear box) 3.3V 3.3V 3.3V Connected signals arrow Sensing Coil 1 Excitation Sensing Coil 1 Excitation Sensing Coil 1 Excitation Sensing Coil 2 Excitation Sensing Coil 2 Excitation Sensing Coil 2 Excitation Sensing Coil 3 Excitation Sensing Coil 3 Excitation Sensing Coil 3 Excitation Sheet.334 MCU MCU MCU Vcc Vcc Vcc UART UART UART I2C I2C I2C ADC ADC ADC GPIO GPIO GPIO ADC ADC ADC GPIO GPIO GPIO ADC ADC ADC GPIO GPIO GPIO
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Exiting Interactive Block Diagram