WO2020132900A1

WO2020132900A1 - Blood pressure and pulse detection device and system

Info

Publication number: WO2020132900A1
Application number: PCT/CN2018/123626
Authority: WO
Inventors: 李铁才; 罗宇
Original assignee: 深圳市大富网络技术有限公司
Priority date: 2018-12-25
Filing date: 2018-12-25
Publication date: 2020-07-02
Also published as: CN111615358A

Abstract

Disclosed is a blood pressure and pulse detection device (10), comprising: a host (11) and a cuff (12), wherein the host (11) is provided with an interface (110) for establishing a connection with a terminal (20), the terminal (20) is used to provide a first voltage to the blood pressure and pulse detection device (10). When the blood pressure and pulse detection device (10) performs blood pressure and pulse detection, the cuff (12) makes contact with a human artery; and the host (11) detects blood pressure and pulse detection data of the human artery by means of the cuff (12), and sends the blood pressure and pulse detection data to the terminal (20) through the interface (110). A blood pressure and pulse detection system comprises the above blood pressure detection device (10) and a terminal (20). The blood pressure and pulse detection device does not need to be provided with a built-in power supply, thereby reducing the volume and weight of the device, and the device is convenient to carry, and can meet the needs of users for measurement at any time.

Description

Blood pressure and pulse detection device and blood pressure and pulse detection system

【Technical field】

The present application relates to the technical field of blood pressure and pulse detection, and relates to a blood pressure and pulse detection device and a blood pressure and pulse detection system.

【Background technique】

Blood pressure is an important parameter used to reflect the physiological health of the human body. Especially for patients with cardiovascular diseases, regular blood pressure measurement plays a very important role in the warning, management and treatment of the disease. As the number of people with high blood pressure continues to increase, the market for home sphygmomanometers is also expanding.

The blood pressure monitor of the prior art is provided with a power supply internally. Because the power supply takes up the volume and weight of the blood pressure monitor, the existing blood pressure monitor cannot be miniaturized, is not convenient to carry, and is difficult to meet the user's needs for measurement at any time.

[Invention content]

In order to solve the above-mentioned problems existing in the sphygmomanometer in the prior art, the present application provides a blood pressure and pulse detection device and a blood pressure and pulse detection system.

To solve the above problem, an embodiment of the present application provides a blood pressure and pulse detection device, which includes a host and a cuff, the host is provided with an interface for establishing a connection with a terminal, and the terminal is used to detect the blood pressure and pulse The device provides a first voltage; when the blood pressure and pulse detection device performs blood pressure and pulse detection, the cuff contacts the human artery, and the host detects the blood pressure and pulse detection data of the human artery through the cuff and passes the interface Sending the blood pressure and pulse detection data to the terminal.

To solve the above technical problems, the present invention also provides a blood pressure and pulse detection system, the blood pressure and pulse detection system includes at least a blood pressure and pulse detection device and a terminal, the terminal and the blood pressure and pulse detection device establish a connection, the blood pressure and pulse detection The device is the blood pressure and pulse detection device described above.

Compared with the prior art, the blood pressure and pulse detection device of the present application includes a host and a cuff. The host is provided with an interface to establish a connection with the terminal. The terminal is used to provide a first voltage to the blood pressure and pulse detection device, that is, the terminal provides blood pressure and pulse through the interface The power supply of the detection device does not require a built-in power supply for the blood pressure and pulse detection device, which reduces the volume and weight of the blood pressure and pulse detection device, realizes miniaturization, is convenient to carry, and can meet the needs of users to measure at any time; in addition, the host detects the blood pressure of the human artery through the cuff Pulse detection data, and send blood pressure and pulse detection data to the terminal through the interface, that is, the blood pressure and pulse detection device can perform data communication with the terminal through the interface, realize the networking function, and improve the user experience.

[Description of the drawings]

In order to more clearly explain the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only some of the applications For the embodiment, for those of ordinary skill in the art, without paying any creative labor, other drawings may be obtained based on these drawings.

1 is a schematic diagram of connection between a blood pressure and pulse detection device and a terminal according to the first embodiment of the present application;

2 is a schematic structural diagram of the blood pressure and pulse detection device and terminal in FIG. 1;

3 is a schematic structural diagram of a blood pressure and pulse detection device according to a second embodiment of the present application;

4 is a schematic diagram of connection of a blood pressure and pulse detection device, a terminal, and a server according to a third embodiment of the present application.

【detailed description】

The present application will be described in further detail below with reference to the drawings and embodiments. In particular, the following embodiments are only used to illustrate the present application, but do not limit the scope of the present application. Similarly, the following embodiments are only a part of the embodiments of the present application but not all the embodiments. All other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of this application and the above drawings are used to distinguish similar objects, and do not have to be used Describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, processes, methods, systems, products or devices that contain a series of steps or units are not necessarily limited to those clearly listed Those steps or units, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or equipment.

Please refer to FIG. 1-2. FIG. 1 is a schematic diagram of the connection between the blood pressure and pulse detection device and the terminal of the first embodiment of the present application; FIG. 2 is a schematic diagram of the structure of the blood pressure and pulse detection device and the terminal in FIG. 1. The blood pressure and pulse detection device 10 of the present application includes a host 11 and a cuff 12, wherein the host 11 is provided with an interface 110, which is used to establish a connection with the terminal 20, and the terminal 20 may include a mobile phone, a tablet computer, a notebook computer, a palmtop computer, for example , Personal digital assistants and wearable devices, etc.

Specifically, the terminal 20 is used to provide the first voltage to the blood pressure and pulse detection device 10, that is, the terminal 20 supplies power to the host 11 of the blood pressure and pulse detection device 10 through the interface 110. The interface 110 may be a USB interface, and the interface 110 may be connected to the terminal 20 through the data line 21, that is, the terminal 20 supplies the first voltage V1 to the blood pressure and pulse detection device 10 through the data line 21. Among them, the terminal 20 has a USB OTG (USB On-The-Go) function, the data line 21 can be an OTG data line. When the terminal 20 is connected to the blood pressure and pulse detection device 10 through the data line 21, the terminal 20 serves as a master device, and the blood pressure and pulse detection device 10 is a slave device.

When the terminal 20 is connected to the blood pressure and pulse detection device 10 through the data line 21, the terminal 20 can generate a detection command and send the detection command to the blood pressure and pulse detection device 10 through the data line 21, so that the blood pressure and pulse detection device 10 detects according to the detection command Blood pressure and pulse detection data. For example, the terminal 20 may be installed with an application program (app) associated with the blood pressure and pulse detection device 10, and the terminal 20 may generate a detection instruction when the application program is opened.

The cuff 12 can be worn on the arm of the human body and contact with the arteries of the human body. The host 11 detects the blood pressure and pulse detection data of the arteries of the human body through the cuff 12. When the blood pressure and pulse detection device 10 receives the detection instruction, the host 11 detects the blood pressure and pulse detection data of the human artery through the cuff 12 according to the detection instruction, and sends the blood pressure and pulse detection data to the terminal 20 through the interface 110.

The blood pressure and pulse detection device 10 of the present application includes a host 11 and a cuff 12, wherein the host 11 is provided with an interface 110, and the terminal 20 supplies power to the blood pressure and pulse detection device 10 through the interface 110. Therefore, the blood pressure and pulse detection device 10 does not need to be provided with a built-in power supply. The volume and weight of the blood pressure and pulse detection device 10 are miniaturized, convenient to carry, and can meet the needs of users for measurement at any time. In addition, the host 11 detects the blood pressure and pulse detection data of the human artery through the cuff 12 and sends the blood pressure and pulse detection data to the terminal 20 through the interface, that is, the blood pressure and pulse detection device 10 can perform data communication with the terminal 20 through the interface 110 to realize the networking function To improve user experience.

The present application further provides the blood pressure and pulse detection device of the second embodiment, which is described on the basis of the blood pressure and pulse detection device 10 disclosed in the first embodiment. As shown in FIG. 3, the cuff 12 may include a gas channel 121 and an airbag bag 122. The gas channel 121 is connected to the airway interface of the airbag bag 122. The airbag bag 122 is used to contain gas, such as air. Wherein, the gas channel 121 may be a soft rubber tube; in other embodiments, the gas channel 121 may be a pipe of other materials.

The host 11 may include a controller 111, a pressure sensor 112, an air pump 113, a bleed valve 114, an air pump drive circuit 115, a bleed valve drive circuit 116, a digital-to-analog conversion circuit 117, and a converter 118; a pressure sensor 112, an air pump 113, and a bleed valve 114 They are respectively coupled to a controller 111. The controller 111 is used to control the air pump 113 to inflate the airbag bag 122, the deflation valve 114 to deflate the airbag bag 122, and the pressure sensor 112 to detect the pressure of the gas in the gas passage 121.

The gas channel 121 may extend to the host 11, and the gas channel 121 may be connected to the pressure sensor 112, the air pump 113, and the bleed valve 114, respectively. The air pump driving circuit 115 is connected between the air pump 113 and the controller 111 for driving the air pump 113, that is, the controller 111 drives the air pump 113 through the air pump driving circuit 115 to fill the airbag bag 122 with gas. The vent valve drive circuit 116 is connected between the vent valve 114 and the controller 111 for driving the vent valve 114, that is, the controller 111 drives the vent valve 114 through the vent valve drive circuit 116 to deflate the airbag bag 122 gas.

The cuff 12 and the host 11 can be detachably connected, that is, the host 11 is provided with a cuff interface, the gas channel 121 of the cuff 12 is detachably connected to the cuff interface, and the gas channel 121 is respectively connected to the pressure sensor 112 through the cuff interface , The air pump 113 and the air release valve 114 are connected.

The digital-to-analog conversion circuit 117 is connected between the pressure sensor 112 and the controller 111; when the pressure sensor 112 detects the pressure of the gas in the gas channel 121, the pressure sensor 112 is used to convert the pressure of the gas into an analog signal and convert the analog signal It is transmitted to the digital-analog conversion circuit 117; the digital-analog conversion circuit 117 converts the analog signal into a digital signal and sends the digital signal to the controller 111.

The interface 110 may include a power supply terminal, which is connected to the air pump drive circuit 115 and the bleed valve drive circuit 116 respectively, for providing the first voltage V1 to the air pump drive circuit 115 and the bleed valve drive circuit 116. The input terminal of the converter 118 is connected to the power supply terminal for receiving the first voltage V1. The converter 118 converts the first voltage V1 to the second voltage V2; the output terminal of the converter 118 is connected to the controller 111, the pressure sensor 112 and The digital-to-analog conversion circuit 117 is connected to supply the second voltage V2 to the controller 111, the pressure sensor 112 and the digital-to-analog conversion circuit 117. The second voltage V2 may be smaller than the first voltage V1, for example, the voltage value of the first voltage V1 may be 5V, and the voltage value of the second voltage V2 may be 3.3V. The converter 118 may be a DC-DC converter.

The interface 110 further includes a data transmission terminal connected to the I2C interface of the controller 111. The terminal 20 sends a detection instruction to the controller 111 through the data transmission terminal. The blood pressure and pulse detection device 10 detects the blood pressure and pulse detection data according to the detection instruction. The compression phase and the decompression phase of the blood pressure and pulse detection device 10 will be described in detail below:

The pressurization phase of the blood pressure and pulse detection device 10 includes: the controller 111 controls the operation of the air pump 113 through the air pump drive circuit 115 when receiving the detection instruction, and the vent valve 114 is closed. At this time, the air pump 113 inflates the airbag bag 122 through the air passage 121. The pressure sensor 112 is used to collect the pressure of the gas in the gas channel 121 and send the pressure of the gas to the controller 111. When the controller 111 determines that the pressure of the gas exceeds a preset value, the controller 111 controls the air pump through the air pump drive circuit 115 113 stopped working.

The decompression phase of the blood pressure and pulse detection device 10 includes: the controller 111 drives the vent valve 114 to work through the vent valve drive circuit 116, and the air pump 113 stops working at this time to control the gas in the airbag bag 122 to release through the gas passage 121 at a constant rate .

The blood pressure and pulse detection device of the present application is provided with a converter 118 for converting a first voltage V1 into a second voltage V2, and the converter 118 is used to provide a second voltage to the controller 111, the pressure sensor 112 and the digital-to-analog conversion circuit 117 V2, the terminal 20 is used to provide the first voltage V1 to the air pump drive circuit 115 and the vent valve drive circuit 116, so the blood pressure and pulse detection device can meet the components of different operating voltages, avoiding the single power supply in the prior art, and improving the blood pressure and pulse detection device stability.

The present application further provides the blood pressure and pulse detection device of the third embodiment, which is described on the basis of the blood pressure and pulse detection device disclosed in the second embodiment. The above blood pressure and pulse detection data may include a pulse wave, which is generated by the movement of the heart and pushes the blood to run along the tube, which is a periodic pressure wave. The pulse wave of the human body contains rich physiological information, such as blood pressure, heart rate and cardiovascular information. Through the analysis of the pulse waveform, cardiovascular health information can be obtained to reduce the occurrence of cardiovascular diseases.

During the pressurization phase of the blood pressure and pulse detection device 10, the controller 111 controls the air pump 113 to inflate the air bag 113 through the air pump drive circuit 115, and the vent valve 114 closes; the controller 111 monitors the gas in the gas channel 121 in real time through the pressure sensor 112 pressure. When the controller 111 determines that the pressure of the gas is the preset first pressure threshold, that is, the blood pressure pulse detection device 10 pressurizes to the high pressure value of the human blood pressure, the controller 111 controls the air pump 113 to stop working, that is, the air pump 113 stops the air bag 122 is inflated. At this time, the pressure of the airbag bag 122 of the cuff 12 is stable, and the waveform of the pulse wave will not be interfered by the outside world, so the controller 112 detects multiple pulse waves through the pressure sensor 112, for example, the controller 112 collects 5 through the pressure sensor 112. -15 pulse waves, and send the collected pulse waves to the terminal 20 through the interface 110.

As shown in FIG. 4, the terminal 20 further establishes communication with the server 30. The terminal 20 sends multiple pulse waves to the server 30. The server 30 is used to filter the multiple pulse waves to remove interference noise. The server 30 obtains the amplitude of each pulse wave and determines whether the amplitude is within the preset amplitude range; if it is, the server 30 determines that the pulse wave with the amplitude within the preset range is the first pulse wave and filters Pulse waves other than the first pulse wave. The server 30 may obtain the amplitude of the characteristic point of the first pulse wave, and the characteristic point may include a reflected wave point, a peak point, a trough point, or other extreme point or inflection point of the first pulse wave.

In other embodiments, the server 30 may also acquire the period of each pulse wave, and filter out the pulse waves whose period is not within the preset period to obtain the first pulse wave, that is, the server 30 uses the period as the filtering condition. Of course, in other embodiments, the amplitude and period of the pulse wave can also be used as the filtering conditions at the same time.

The server 30 further matches the filtered pulse wave (that is, the first pulse wave) with the preset waveform to obtain a waveform corresponding to the first pulse wave, where the preset waveform includes at least the Hua mai waveform, the pulse-promoting waveform, and the Xuan mai waveform Or Pingmai waveform. The server 30 obtains the analysis result according to the waveform corresponding to the first pulse wave, and sends the analysis result to the terminal 20 to display the analysis result on the terminal 20. For example, if the server 30 determines that the first pulse wave matches the preset Hua mai waveform, the server 30 determines that the first pulse wave is Hua mai; the server 30 further obtains the analysis result according to the Hua mai, and sends the analysis result to the terminal 20 .

The following describes in detail that the server 30 matches the first pulse wave with the preset waveform:

Specifically, the server 30 obtains the first feature information of the first pulse wave and the second feature information of the preset waveform respectively. If the difference between the first feature information and the second feature information is less than the preset difference, the server 30 30. Determine that the first pulse wave matches the preset waveform. The characteristic information may include waveform period and stagnation point (including extreme point and inflection point) information of the first pulse wave. Among them, the waveform stagnation point information includes the number of waveform stagnation points and the time interval between adjacent waveform stagnation points. For example, the waveform period of the pulse-promoting pulse differs greatly from the waveform periods of other pulses. If the server 30 determines that the difference between the waveform period of the first pulse wave and the preset pulse waveform is less than the preset difference, the server 30 It can be judged that the first pulse wave is a pulse boost. If the server 30 determines that the difference is greater than the preset difference, the server 30 determines whether the number of waveform extreme points of the first pulse wave is 2, wherein the number of waveform extreme points of the Huamai is 2, and determines the second Whether the position of the waveform stagnation point is lower than that of the first waveform stagnation point; if so, it can be determined that the first pulse wave is a Hua mai. If the server 30 determines that the number of waveform extreme points of the first pulse wave is 3, the server 30 further determines whether the interval between the first waveform stagnation point and the second waveform stagnation point of the first pulse wave is less than the preset Time, the preset time is the time interval between the stagnation point of the first waveform and the stagnation point of the second waveform; if so, the server 30 determines that the first pulse wave is a sine pulse.

The blood pressure and pulse detection device 10 of the present application collects a plurality of pulse waves in the pressurization stage, which can reduce the collection time of the pulse wave and improve the detection efficiency of the blood pressure and pulse detection device 10; further, the blood pressure and pulse detection device 10 is at a pre-pressure The first pressure threshold is set to collect multiple pulse waves, the pressure of the airbag bag 122 of the cuff 12 is stable, the waveform of the pulse wave will not be interfered by the outside world, and the accuracy of pulse wave acquisition is improved; the server 30 is based on the first pulse wave The corresponding waveform obtains the analysis result, so that the non-medical personnel can also understand their own health status through the analysis result, which can improve the user experience.

The present application further provides the blood pressure and pulse detection device of the fourth embodiment, wherein the airbag bag 122 may include reserved gas, that is, the airbag bag 122 still retains the reserved gas when the blood pressure and pulse detection device 10 completes the decompression phase. Specifically, when the controller 111 controls the deflation valve 114 to deflate the airbag bag 122, the controller 111 monitors the pressure sensor 112 in real time, and when the controller 111 determines that the pressure of the pressure sensor 112 is the second pressure threshold, the controller 111 The vent valve 114 is controlled to stop deflation, so that the airbag bag 122 retains the reserved gas.

The controller 111 performs pressure detection on the reserved gas through the pressure sensor 112, and determines whether to start blood pressure and pulse detection according to the pressure detection result; if so, the blood pressure and pulse detection device 10 performs blood pressure and pulse detection. Specifically, the controller 111 determines the pressure change range of the gas within a preset time interval according to the pressure detection result. When the controller 111 determines that the pressure change range is greater than the preset change range threshold, the controller 111 starts blood pressure pulse detection, In order to obtain blood pressure and pulse detection data.

In other embodiments, the controller 111 further obtains the pressure detection result and the pressure change amplitude of the second pressure threshold. When the controller 111 determines that the pressure change amplitude is greater than the preset change amplitude threshold, the controller 111 starts blood pressure and pulse detection.

When the controller 111 determines that the pressure change amplitude is smaller than the preset change amplitude threshold, the controller 111 controls the blood pressure and pulse detection device 10 to enter a sleep state to save power consumption.

The airbag bag 122 of the present application includes reserved gas, and the controller 111 performs pressure detection on the reserved gas, and judges whether to start blood pressure and pulse detection according to the pressure detection result, that is, the blood pressure and pulse detection device 10 can automatically start blood pressure and pulse detection. Improve user experience.

The present application further provides the blood pressure and pulse detection device of the fifth embodiment. During the pressurization phase of the blood pressure and pulse detection device 10, the blood pressure and pulse detection device 10 adopts closed-loop control to adjust the inflation rate of the gas, specifically the controller 111 controls the air pump 113 to the airbag The bag 122 is inflated. The pressure collected by the controller 111 through the pressure sensor 112 is the first pressure, and the pressure collected by the controller 111 through the pressure sensor 112 the previous time is the second pressure; the controller 111 is based on the first pressure and the second pressure The static pressure of the cuff 12 is obtained.

The controller 111 further obtains the compression rate of the gas in the airbag bag 122 according to the static pressure, and compares the compression rate with the constant rate; when the controller 111 determines that the compression rate is less than the constant rate, the controller controls the rotation speed of the air pump 113 Increase; when the controller 111 determines that the acceleration rate is greater than the constant rate, the controller 111 controls the rotation speed of the air pump 113 to decrease so that the pressurization rate is a constant rate. Therefore, the controller 111 controls the air pump 113 to inflate the airbag bag 122, and then controls the air pump 113 to inflate at a constant speed through the gas channel 121, so as to ensure the accuracy of the pulse wave obtained by the controller 111.

According to a further blood pressure and pulse detection system of the present application, as shown in FIG. 2, the blood pressure and pulse detection system includes at least a blood pressure and pulse detection device 10 and a terminal 20. The terminal 20 and the blood pressure and pulse detection device 10 establish a connection. The blood pressure and pulse detection device is the above embodiment The disclosed blood pressure and pulse detection device 10 will not be repeated here.

In summary, the blood pressure and pulse detection device of the present application includes a host and a cuff. The host is provided with an interface to establish a connection with the terminal. The terminal is used to provide a first voltage to the blood pressure and pulse detection device, that is, the terminal provides the blood pressure and pulse detection device through the interface Power supply, blood pressure and pulse detection device does not need to be equipped with a built-in power supply, which reduces the volume and weight of the blood pressure and pulse detection device, realizes miniaturization, is easy to carry, and can meet the needs of users at any time; in addition, the host detects the blood pressure and pulse detection of human arteries through the cuff Data, and send the blood pressure and pulse detection data to the terminal through the interface, that is, the blood pressure and pulse detection device can perform data communication with the terminal through the interface, realize the networking function, and improve the user experience.

It should be noted that the above embodiments all belong to the same inventive concept, and the description of each embodiment has its emphasis. For details that are not described in individual embodiments, refer to the descriptions in other embodiments.

The protection circuit and control system provided by the embodiments of the present application are described in detail above. Specific examples are used to explain the principle and implementation of the present application. The descriptions of the above embodiments are only used to help understand the method of the present application And its core ideas; meanwhile, for those of ordinary skill in the art, according to the ideas of this application, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limits.

Claims

A blood pressure and pulse detection device, characterized in that the blood pressure and pulse detection device includes a host and a cuff, the host is provided with an interface for establishing a connection with a terminal, and the terminal is used to provide the blood pressure and pulse detection device First voltage

When the blood pressure and pulse detection device performs blood pressure and pulse detection, the cuff is in contact with a human artery, the host detects the blood pressure and pulse detection data of the human artery through the cuff, and detects the blood pressure and pulse through the interface The data is sent to the terminal.
The blood pressure and pulse detection device according to claim 1, wherein the interface includes a USB interface, the interface is connected to the terminal through a data line, and the terminal is connected to the blood pressure and pulse detection device through the data line The first voltage is provided, and a detection instruction is sent to the blood pressure and pulse detection device through the data line, so that the blood pressure and pulse detection device detects the blood pressure and pulse detection data according to the detection instruction.
The blood pressure and pulse detection device according to claim 2, wherein:

The cuff includes a gas channel and an airbag bag, and the gas channel is connected to the airway interface of the airbag bag;

The host includes a controller and a pressure sensor, an air pump and a vent valve coupled to the controller, the pressure sensor, the air pump and the vent valve are respectively connected to the gas channel, and the controller is used to control The air pump inflates the airbag bag, controls the deflation valve to deflate the airbag bag, and controls the pressure sensor to detect the pressure of the gas in the gas channel.
The blood pressure and pulse detection device according to claim 3, wherein the host further comprises an air pump drive circuit and a vent valve drive circuit; the air pump drive circuit is connected between the air pump and the controller for Driving the air pump; the vent valve drive circuit is connected between the vent valve and the controller for driving the vent valve;

The interface includes a power supply terminal, and the power supply terminal is respectively connected to the air pump drive circuit and the bleed valve drive circuit, and is configured to provide the first voltage to the air pump drive circuit and the bleed valve drive circuit.
The blood pressure and pulse detection device according to claim 4, wherein the host further includes a converter and a digital-to-analog conversion circuit, the digital-to-analog conversion circuit is connected between the pressure sensor and the controller, so The input terminal of the converter is connected to the power supply terminal for converting the first voltage to a second voltage, and the output terminal of the converter is respectively connected to the controller, the pressure sensor and the digital-analog The conversion circuit is connected to provide the second voltage to the controller, the pressure sensor and the digital-to-analog conversion circuit.
The blood pressure and pulse detection device according to claim 4, characterized in that the interface further comprises a data transmission terminal connected to the I2C interface of the controller, and the terminal transmits to the controller through the data transmission terminal The detection instruction and receive the blood pressure and pulse detection data from the controller.
The blood pressure and pulse detection device according to claim 3, wherein the blood pressure and pulse detection data includes a pulse wave, the controller controls the air pump to inflate the air bag, and the pressure detected by the pressure sensor When it is a preset first pressure threshold, the controller controls the air pump to stop inflation, detects a plurality of pulse waves through the pressure sensor, and sends the plurality of pulse waves to the terminal.
The blood pressure and pulse detection device according to claim 7, wherein the terminal establishes communication with a server, and the terminal sends a plurality of the pulse waves to the server, and the server is used to Filtering the pulse wave, matching the filtered pulse wave with a preset waveform to obtain a waveform corresponding to the pulse wave; the server obtains an analysis result according to the waveform corresponding to the pulse wave, and converts the The analysis result is sent to the terminal.
The blood pressure and pulse detection device according to claim 3, wherein the airbag bag includes a reserved gas, and the controller performs pressure detection on the reserved gas through the pressure sensor and detects the pressure according to the pressure As a result, it is judged whether the blood pressure and pulse detection is started.
The blood pressure and pulse detection device according to claim 9, wherein the controller controls the deflation valve to deflate the air bag, and the controller determines that the pressure of the pressure sensor is preset When the second pressure threshold is reached, the controller controls the deflation valve to stop deflation, so that the airbag bag retains the reserved gas.
The blood pressure and pulse detection device according to claim 10, wherein the controller obtains the pressure change range of the pressure detection result and the second pressure threshold, and the controller determines the pressure change range When it is greater than a preset change amplitude threshold, the controller starts the blood pressure and pulse detection.
The blood pressure and pulse detection device according to claim 9, wherein the controller determines the pressure change range of the gas within a preset time interval according to the pressure detection result, and the controller determines that When the pressure change amplitude is greater than a preset change amplitude threshold, the controller starts the blood pressure and pulse detection.
The blood pressure and pulse detection device according to any one of claims 11 or 12, wherein the blood pressure and pulse detection device enters a sleep state when the controller determines that the pressure change amplitude is less than a preset change amplitude threshold .
The blood pressure and pulse detection device according to claim 3, wherein the controller controls the air pump to inflate the airbag bag, and the pressure of the gas collected by the controller through the pressure sensor is the first Pressure, the static pressure of the cuff is obtained according to the first pressure and the second pressure, and the second pressure is the pressure collected by the controller through the pressure sensor the previous time.
The blood pressure and pulse detection device according to claim 14, wherein the controller obtains the pressurization rate of the gas in the airbag according to the static pressure, and compares the pressurization rate with a constant rate;

When the controller determines that the pressurization rate is less than the constant rate, the controller controls the speed of the air pump to increase;

When the controller determines that the pressurization rate is greater than the constant rate, the controller controls the rotation speed of the air pump to decrease.
A blood pressure and pulse detection system, characterized in that the blood pressure and pulse detection system includes at least a blood pressure and pulse detection device and a terminal, and the terminal establishes a connection with the blood pressure and pulse detection device, and the blood pressure and pulse detection device is claim 1- 15. The blood pressure and pulse detection device according to any one of the items.