MPL-B330P-SK74AA

MPL-B330P-SK74AA

MPL-B330P-SK74AA

MPL-B330P-SK74AA

MPL-B330P-SK74AA

CAN通信模块是本设计的核心，它负责系统中主控机和执行器之间的数据通信。

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单个CAN总线节点由单片机、CAN总线控制器、高速光电耦合器及总线驱动器组成，可编程控制。故称之为智能节点。设计中CAN通信模块采用了独立式的CAN控制器，数据通过对控制器编程写入控制器芯片的发送缓冲区里发送出去，目的节点则负责把数据接收到数据接收缓冲区里，再通过CAN总线接口和单片机之间的数据总线，传递给单片机进行处理。设计方案如图3所示。

3 无线收发模块

无线收发模块采用nRF2401芯片，该芯片具有内置地址解码器、先入先出堆栈区、解调处理器、时钟处理器、GFSK滤波器、低噪声放大器、频率合成器、功率放大器等功能模块，只需要很少的外围元件，使用非常方便。硬件电路连接实现单片机与nRF2401芯片的接口连接。发送端与接收端硬件连接几乎一样，具有通用性，可以实现半双工通信。单片机使用的是STC89C52，成本低，控制简单，容易扩展。硬件电路如图4所示。

GIDDINGS & LEWIS 502-03814-60R1PP 5020381460R1

Giddings & Lewis 32 Axis Digital MMC / PLC

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Electro-Craft, Reliance Electric DM-020

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Electro-Craft, Reliance Electric, Allen Bradley DDM-020

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Expedited shipping available

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Expedited shipping available

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One-day shipping available

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