`graph TD
subgraph 硬件架构
A[LoRa射频前端] -->|SPI| B[主控制器]
B -->|UART/SPI| C[协议处理模块]
C -->|RS485/Modbus| E[无纸记录仪]
T[硬件看门狗] --> B
H[RS232]
end
subgraph 软件模块
L[配置管理] --> H
M[节点管理]-->A
N[协议处理] --> C
P[故障处理] --> C
end
%% 关键特性标注
classDef feature fill:#e6f7ff,stroke:#1890ff,stroke-width:2px;
class L,O,P feature
classDef param fill:#f6ffed,stroke:#52c41a;
class H,I,J,K param
classDef reliability fill:#fff7e6,stroke:#fa8c16;
class Q,R,S,T reliability` | 
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