1 Introduction Today, with the booming of electronic technology, the government and medical institutions at all levels are working hard to improve the medical system to better serve patients. After the embedded technology is applied to the medical industry , patients can have more choices, choose the treatment and treatment that suits them, choose to stay at home, or go to the hospital or doctor's office. The medical industry has leveraged the advantages of a portable, remotely connected medical monitoring system. Such monitoring devices include electronic blood glucose meters, portable bedside monitors, portable electrocardiogram (ECG) systems, and even more sophisticated medical monitoring systems. Since 2008, more and more good news has appeared in the field of medical electronics. Both Germany and Australia have clearly stated that they will increase their investment in the fields of child care and universal health care. The developing countries such as China and Mexico are also undergoing medical reforms that have attracted worldwide attention. These government-level investors will increase the demand for medical electronics in society. In addition, there are some factors that will have an impact on the medical electronics market. The global population is becoming more and more aging, and these aging populations have a very large demand for medical care. There is growing recognition of the concept of disease prevention and early detection and early treatment, which will facilitate the need for basic medical instruments such as x-ray, CT, positron emission tomography (PET), MRI and ultrasound. The upgrade and update of medical instruments will also bring new demands to the market, such as the change of the screen of ultrasonic instruments from black and white to color. All of the above factors have a great impact on the technical direction of medical electronic devices. Compared with large-scale devices, portable medical electronic devices with relatively low cost have shown unprecedented vitality under the demand. For example, a sphygmomanometer or a blood glucose meter that can be carried with you, a ventilator or an electrocardiograph that can be used in a home or a small social hospital will inevitably have an increasing market demand. 2. Embedded and portable medical electronic devices "Portable" medical electronic devices are increasingly demanding portability while addressing the flexible transfer of data, and to maintain the quality and real-time nature of the acquired data. There are two main types of portable devices. One is a mobile (handheld) device, such as a product for patient monitoring, such as a product that measures pulse, blood pressure, and other signs, which can be easily carried at any time, and it is necessary to ensure that the battery has sufficient battery life, at least one day for the doctor to visit. No need to charge inside. The other ones are not necessarily portable, but they are low-cost, simple devices that are generally used in hospitals with simple equipment. This of course brings design challenges, not just the size of the equipment, but also the internal electrical parts need to be innovative. The entire system of portable medical monitoring equipment that the author participated in has five basic parts: data acquisition, data transmission, data processing, human-machine interface, and power supply. The ZTE-MEDi27 motherboard that the author participated in is concerned with the five components of the monitoring system, and adopts novel technologies in a targeted manner to make the medical monitoring equipment perform optimally. The following six points explain the application of embedded in the field of medical monitoring: 1) Battery and power management; 2) Display and Human Machine Interface (HMI); 3) biosensor interface and bus; 4) Data exchange interface; 5) central processing unit and data operation efficiency; 6) Reliability design for portable applications.
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