Study Of Electric Sphygmomanometer With Large Storage Capacity

Blood pressure is an important physiological-biochemical characteristic, measuring blood pressure can often detect abnormal blood pressure. It is conducive to the discovery of the body's abnormal blood pressure symptoms as soon as possible, then proposes a reasonable method of treatment. With the development of technology and the improvement of living standards, people are increasingly concerned about their health status, measuring blood pressure at any time becomes more and more necessary. Traditional mercury sphygmomanometer is bulky and inconvenient to operate. The design of the emerging electronic blood pressure monitor makes up for shortcomings and is becoming more and more popular.This article describes the theory of the electronic sphygmomanometer, and the method to achieve a general method for blood pressure measurement. Then this article discusses the realization of the device on both hardware and software sides.On the hardware side, the device uses the Atmegal69 microcontroller as the core, which integrated with AD modules and LCD driver module, a E'PROM chip for storage media, the USB bus as a transmission channel, the reliable valve and switch as the drive circuit. The device can measure and storage blood pressure automatically. Written in C language, the software is proved to be high efficiency and versatility. Through software and hardware combination technology, the device can automatically measure and record blood pressure and the results can also be transferred to a computer for further analysis and processing. Then we can gain a more comprehensive health status. As the measurement is fast, simple, reliable, and has a good interactive interface, the device, tested, can fully meet the needs of blood pressure measurement.This paper has done in the following more detailed statement:1. Describes the commonly used blood pressure and pulse measurement methods and principles.2. Introduced the principle of the device'hardware, system frameworks, and how each module works.3. Describes the characteristics of USB2.0 and circuit, firmware, driver development of USB.4. Describes Workflow of system software, and the measurement algorithm, and introduces the Corresponding PC software.