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在航天成像光谱仪研制过程中,为了确保载荷和星务接口能够正常工作,需要相应的模拟器来模拟星务和载荷的通信联系。本文介绍的星务模拟器用PCI7841 CAN控制卡作为主机CAN节点,用单片机控制的SJA1000 CAN控制器作为总线监测节点,通过CAN总线实现了对某卫星红外相机的实时、可靠的控制和监测。
In the development of space imaging spectrometer, in order to ensure that the load and satellite interface can work normally, a corresponding simulator is needed to simulate the communication between satellite service and load. In this paper, the satellite simulator uses PCI7841 CAN control card as the host CAN node, and uses SJA1000 CAN controller controlled by SCM as the bus monitoring node to realize the real-time and reliable control and monitoring of a satellite infrared camera through the CAN bus.