Abstract: This application relates to the field of blood pressure measurement, and discloses a blood pressure measurement method and system, an electronic device, and a medium. According to the blood pressure measurement method in this application, in a pressurization phase of blood pressure measurement, a real-time air pressure value of an air path connected to an air bladder is detected, and then an air valve drive circuit is controlled based on the real-time air pressure value. For example, when air pressure of the air bladder is low, a low drive voltage may be used to drive an air valve to operate; or when the air pressure of the air bladder is high, a high drive voltage may be used to drive the air valve to operate.

Abstract: A airbag assembly includes an expansion airbag layer and a protrusion airbag layer disposed on a surface of the expansion airbag layer, and an air passage for air circulation is disposed between the two airbag layers. The protrusion airbag layer includes a plurality of sub-airbags. The plurality of sub-airbags include a first sub-airbag and a second sub-airbag. The first sub-airbag is disposed at a location closer to a middle part of the expansion airbag layer than the second sub-airbag. A capacity of an inflation cavity of the first sub-airbag is less than a capacity of an inflation cavity of the second sub-airbag.

Abstract: An airbag includes a first film layer and a second film layer that are disposed opposite to each other. The first film layer includes a first body part and a first edge part, and the first edge part is adjacent to the first body part and is disposed along a circumferential direction of the first body part. The second film layer includes a second body part and a second edge part, and the second edge part is adjacent to the second body part and is disposed along a circumferential direction of the second body part. The first body part and the second body part enclose a first cavity, and the first edge part and the second edge part that are connected and disposed in a stacked manner jointly form a first connection part. The first connection part is located in the first cavity.

Abstract: A blood pressure measurement device and an electronic device are provided. The blood pressure measurement device includes a body (1), a processor (7), an airbag (2), an air supply and exhaust apparatus (4), a driving apparatus (6), a barometric pressure sensor (5), and a flowmeter (9). The body (1) includes a cavity (101), the airbag (2) has an air cavity, and the airbag (2) is fastened to an end of the body (1). The air supply and exhaust apparatus (4) is connected to the air cavity of the airbag (2) through a first air path (81). The barometric pressure sensor (5) is connected to the air cavity of the airbag (2) through a second air path (82). The flowmeter (9) is configured to detect an air flow value between the air supply and exhaust apparatus (4) and the airbag (2), or is configured to detect an air flow value between the barometric pressure sensor (5) and the airbag (2).

Abstract: An electronic device is provided. An example electronic device includes a watch body, a first strap, and a second strap. The watch body includes a sensor and a processor. A first airbag and a first magnet are disposed on the first strap, and a first magnetic pole of the first magnet is disposed close to a mounting part of the first strap. A second magnet is disposed on the second strap, and a second magnetic pole of the second magnet is disposed close to a mounting part of the second strap. The second magnetic pole is different from the first magnetic pole, a length of the first airbag is different from a length of a second airbag.

Abstract: This application provides a wearing detection method for a wearable device and the wearable device. The wearable device includes a main body, a wrist strap, and a blood pressure detection component. The blood pressure detection component includes an airbag and an air pump. The method includes: detecting that a preset condition is met, and inflating the airbag; detecting a volume expansion rate of the airbag; determining a wearing detection result of the wearable device based on the volume expansion rate; and displaying a first interface, where the first interface includes the wearing detection result.

Abstract: One example blood pressure measurement device includes a body, a wrist strap, an airbag, an air supply and exhaust apparatus, a first sensor, and a second sensor. The airbag has an air cavity, and the airbag is connected to the body. The body includes a cavity, and the air supply and exhaust apparatus is disposed in the cavity. The air supply and exhaust apparatus includes an air intake path and an air exhaust path, and the air supply and exhaust apparatus communicates with the air cavity of the air bag. The first sensor is configured to measure an air pressure value in the air cavity. The second sensor is located on a same side of the wrist strap as the airbag, and is configured to measure a pulse wave signal.

Abstract: A blood pressure measuring device includes a main body and an airbag. An air supply and exhaust apparatus and a first air pressure sensor may be disposed in the cavity of the main body. The air supply and exhaust apparatus includes an air inlet passage and an air outlet passage. The air supply and exhaust apparatus is communicated with the air cavity through a first air passage. The first air pressure sensor includes a first air hole and a second air hole, and a pressure film is provided between the first air hole and the second air hole. A first vent hole is provided on the side wall of the main body. The first air hole may be communicated with the air cavity of the airbag through a second air passage, and the second air hole may be communicated with the first vent hole through a third air passage.

Abstract: This application is applicable to the field of device control technologies, and provides a prompt method and apparatus, an electronic device, and a computer-readable storage medium. The method includes: obtaining first feature data of a user in response to a measurement operation, where the first feature data includes an activity intensity of the user and/or an air pressure value; determining an abnormality type of the wearable device and/or the user based on the first feature data, where the abnormality type indicates that the wearable device and/or the user are/is currently in a state in which a measurement condition is not met; and outputting prompt information associated with the abnormality type, where the prompt information is used to prompt the user to adjust the current state).

Abstract: A wearable device and an airbag preparation method. The wearable device includes a watch body, an airbag, and an airbag cover. The airbag is detachably connected to an end of the watch body, so that a coverage area of the airbag for the watch body is small, thereby reserving space for installing another module on the watch body. The airbag includes a first layer structure and a second layer structure that are superposed. The first layer structure has a first cavity, the second layer structure has a second cavity, and the first cavity communicates with the second cavity.

Abstract: Example optical devices are described. One example optical device includes a receiver. The receiver includes a photodetector, a first amplifier, a second amplifier, and a controller, where the photodetector is coupled to the first amplifier, the first amplifier is coupled to the second amplifier, and the first amplifier and the second amplifier are separately coupled to the controller. The controller is configured to control a gain of the first amplifier and a gain of the second amplifier based on a preset arrival time of an optical signal and a gain intensity corresponding to the optical signal. The photodetector is configured to receive the optical signal and convert the optical signal into a current signal. The first amplifier is configured to convert the current signal into a first voltage signal. The second amplifier is configured to convert the first voltage signal into a second voltage signal.

Abstract: Example optical devices are described. One example optical device includes a receiver. The receiver includes a photodetector, a first amplifier, a second amplifier, and a controller, where the photodetector is coupled to the first amplifier, the first amplifier is coupled to the second amplifier, and the first amplifier and the second amplifier are separately coupled to the controller. The controller is configured to control a gain of the first amplifier and a gain of the second amplifier based on a preset arrival time of an optical signal and a gain intensity corresponding to the optical signal. The photodetector is configured to receive the optical signal and convert the optical signal into a current signal. The first amplifier is configured to convert the current signal into a first voltage signal. The second amplifier is configured to convert the first voltage signal into a second voltage signal.