1、 Overview of the Plan

A sphygmomanometer is a health monitoring device used for non-invasive measurement of arterial blood pressure in the human body. It can accurately obtain systolic blood pressure (high pressure) and diastolic blood pressure (low pressure) values, and synchronously monitor pulse and heart rate per minute. It is a core device for monitoring cardiovascular basic health status at home and in medical institutions.

2、 Core hardware specifications and parameter design

（1） Measurement Core Principles

By using oscilloscope measurement method combined with pressure boosting inflation measurement, the pulse oscillation waveform is synchronously collected during the inflation stage, which can shorten the overall measurement time, make the inflation process smoother, reduce the discomfort of arm compression, and greatly improve the user's measurement experience.

（2） Performance indicator parameters

1. Pressure detection

The measurement range covers 0~299mmHg, equivalent to 0~39.9kPa;

The pressure measurement accuracy is controlled within ± 3mmHg or ± 0.4kPa, in compliance with the accuracy specifications for household medical devices;

The device supports two pressure units: mmHg and kPa, and can be freely switched for display.

2. Pulse and heart rate detection

The heart rate detection range is 40-200 beats per minute, with a heart rate reading accuracy of ± 5%. The screen is equipped with a dedicated heartbeat icon to provide real-time updates on the pulse detection status.

3. Display and human-computer interaction

Equipped with a segmented LCD screen, it displays high voltage SYS, low voltage DIA, and heart rate BPM independently in three lines. The screen synchronously sets low battery, historical records, and heart rate status icon identification.

4. Storage and power solution

Local storage can hold up to 100 complete sets of measurement data, which can be flipped and viewed through buttons; The power supply supports two customized versions. The standard version comes with a built-in rechargeable lithium battery, which can be used repeatedly with a Type-C charging interface. It also supports customized dry battery styles, making it suitable for outdoor use and scenarios without charging conditions.

3、 Whole machine operation logic design

1. One click start measurement

Short press the power button, the device will automatically inflate and boost pressure, and collect physiological waveforms. After the measurement is completed, the screen will lock the blood pressure and heart rate values, and the screen will automatically turn off and shut down after a few seconds of rest.

2. View historical records

Short press the MEM key in standby mode to retrieve stored data, and continuously press the key to scroll up and view all 100 sets of historical records in a loop.

3. Unit switching settings

Short press the SET button to cycle between mmHg and kPa pressure units, and the parameters will take effect in real-time without the need for additional confirmation.

4、 Characteristics

1. Boosting measurement provides a better measurement experience and shorter measurement time.

2. Easy to use, one click measurement.

5、 Applicable landing scenarios

The solution is practical and can be used for home health monitoring, primary medical examinations, and supporting facilities for healthcare institutions.

6、 Summary of the plan

The arm type electronic blood pressure monitor solution belongs to a mature standardized whole machine landing solution, with hardware performance parameters in line with the accuracy standards of the home electronic blood pressure monitor industry, software operation logic that conforms to the usage habits of ordinary users, a complete fault self checking system, and multiple function customization upgrade spaces reserved.