| The ECG instrument is a very important medical apparatus which is used for prevention and treatment to heart disease.With the widespread use of computer in the medical field,we pay a great attention to the PC-based ECG instilment. In this paper,based on the retrospective survey study of the present status of the present status of the technique and the actual need of the project and hospital, the Intelligent Electrocardiograph Based on net is designed.The framework of the instument is analyzed firstly, and the paper focuses on the ECG pre-amplifier design, the data acquisition module based-on ISA bus with multi channel inputs is realized,the system software that can fulfill the data acquisition, display and communication is also designed.The two patterns of the network communication is introduced in detail. The noise and interference of the system is considered finally. |