Double-CPU data interaction method, device and system

• Main Author: SONG ZHENXIN
• Format: Patent
• Language: Chinese; English
• Published: 26.02.2021
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention discloses a double-CPU data interaction method, which is characterized in that data interaction between a control station CPU and a DP master station CPU can be realized in a manner of sending corresponding instructions and alternately acquiring shared memory operation authority between the control station CPU and the DP master station CPU, and meanwhile, when data is written into and read from a shared memory, other devices which cannot obtain the operation authority can be prevented from tampering the data, so that the risk of data leakage can be greatly reduced, and the security of data transmission is effectively improved. The invention also provides a dual-CPU data interaction device and a dual-CPU data interaction system, which also have the above beneficial effects. 本发明公开了一种双CPU数据交互方法，控制站CPU与DP主站CPU之间通过发送对应指令以及交替获取共享内存操作权限的方式，可以实现控制站CPU与DP主站CPU之间的数据的交互，同时该方法在向共享内存写入以及读取数据时，可以避免其他无法获取操作权限的设备对数据进行篡改，从而可以极大的减小数据泄露的风险，有效提高数据传输的安全性。本发明还提供了一种双CPU数据交互装置以及一种双CPU数据交互系统，同样具有上述有益效果。