本文從主從通訊電路、以太網通訊電路、電流環通訊電路、開關量輸入與輸出電路，共幾個方面詳細介紹了一種實用性通信采集系統的模塊化硬件設計。本設備采用模塊化設計思想，各個部分之間都帶有光電隔離，實現完全電氣隔離電路設計，使其具有很強的抗干擾能力，大大提高了系統在惡劣環境中使用的可靠性。
關鍵字: 采集系統；模塊化；電路設計；嵌入式
Abstract: It introduces the hardware design of an embedded communication collection facility in this paper. It consists of master-slave communication circuit, current circle communication circuit, and switch I/O circuit. It designs the facility in several modulations. The photoelectricity isolation circuit is concluded in every module to implement the absolute photoelectricity isolation. Consequently, it will increase the anti-jamming capability and
improve the reliability of this system used in a sever circumstance.
Keywords: Acquisition System; Modulation; Circuit Design; Embedded System