Electronic sphygmomanometer is a medical device that uses electronic technology and indirect blood pressure measurement principle to measure blood pressure. The electronic blood pressure meter is divided into arm type, wrist type and watch type; Its electronic technology has undergone the development of the first generation (mechanical constant speed exhaust valve), the second generation (electronic servo valve), the third generation (pressurized synchronous measurement), and the fourth generation (integrated gas circuit). It usually consists of a blocking cuff, a sensor (barometer), an electromagnetic valve, an inflation pump, and a measuring circuit. Blood pressure measurement usually uses oscillographic methods, similar to the principle of non-invasive indirect blood pressure measurement.

The vast majority of sphygmomanometer and electronic sphygmomanometer measure blood pressure indirectly by oscillometry. Oscillographic blood pressure measurement is used to determine blood pressure by establishing the relationship between systolic blood pressure, diastolic blood pressure, uniform blood pressure, and cuff pressure oscillation waves.

Principle of electronic sphygmomanometer
The design scheme of electronic sphygmomanometer adopts the principle of oscillography, that is, the cuff is worn on the arm, and different electronic sphygmomanometer are worn in slightly different positions. After correctly wearing the cuff, the electronic sphygmomanometer automatically pressurizes and inflates, and then begins to deflate. In this process, the electronic sphygmomanometer can directly measure the pressure and fluctuation of the blood flowing through the blood vessels., After receiving these data fluctuations, the pressure sensor amplifies and processes them, and then outputs the measurement results on the LCD display screen.

The operation and characteristics of the electronic sphygmomanometer scheme system.
system operation
In shutdown state:
Press a start button to start measurement
Press the History button to enter History. Press this button continuously to open history
Press the unit key to switch units
　　
In any boot state:
Press the on key to close the parallel screen of the sphygmomanometer.
characteristic
Booster measurement provides a better measurement experience and shorter measurement working time.
Easy to use, one click measurement.

Product parameters of electronic sphygmomanometer
Measurement method: Oscillometry
Implementation method: Boost measurement
Pressure measurement range: 0~299mmHg (0~39.9kPa).
Pressure control accuracy: within ± 3mm Hg (± 0.4 kPa)
Pressure unit: mmHg/kPa
Pulse rate 40 to 200 beats per minute
Pulse accuracy: accuracy of 5%.
Display method: LCD digital data display
Power supply: built-in lithium battery (customizable dry battery development)