Heart disease is paroxysmal, so the patients repose impossibly in hospital for a long time. But they need to ward real-time so it is very important to develop a portable ECG monitor. Therefore, it is great significant to research high performance ECG monitor in clinic. The rapid development of electronical technology has supported this research with good condition.An ECG sampling system based on ARM7 was designed, it was based on the two factors: one the taking place of cardiac disease is random and dangerous, so valetudinarians have to take care of their harts chronically, and need doctors' help periodically or freely.Therefore, it's critical to investigate and produce more effectual ECG monitor equipments; Embedded System is a special computer system that be taken application as center and hardware curable. It is suitable for the application system, which is very strict in request of function, reliability, cost, volume and consumption. ARM, the RISC processor, because of its cost-efective, low power and simple, has been particularly suitable for designing embedded systems.First, production and the noises of ECG signals are introduced, an ECG collecting module is designed. It includes analog signals' disposal-amplification and filter of ECG.And then, introducing the model selection of microprocessor and the design of the system hardware circuit. Central processing unit was designed by low power and high performance LPC2210, extended memory and liquid crystal display modules.All this research works are deccribed in details in this thesis and meet the demand of design basically.At the same, the dissertation is very useful to embedded system freshers and developers. It can help them rapidly grasp the main feathers and important places in hardware design. |