CN108013548A - Can pinpoint human body physical sign monitoring Intelligent bracelet - Google Patents

Abstract

The invention discloses can pinpoint human body physical sign monitoring Intelligent bracelet, be packaged with microcontroller, Bluetooth chip, body temperature detection sensor, heart rate blood oxygen detecting sensor, step-counting sensor, GPS locator, red point location module, battery in bracelet；Each function module is connected and worked by microcontroller；The mode of human body physical sign Monitoring Indexes is miniaturized the present invention, facilitation, the cumbersome measurement method of precision substitution tradition, human body key sign is detected into data together as one, make user very clear by terminal, and have the function that to be accurately positioned and Realtime Alerts, the situation that the emergency that in time human body cannot occur caused by avoiding position error or alarm delay be given treatment to.

Description

Human body sign monitoring smart bracelet with precise positioning

technical field

The invention relates to a smart wrist wearable device, in particular to a smart wristband for monitoring human body signs that can be precisely positioned.

Background technique

A smart bracelet is a wearable smart device. Through this wristband, users can record real-time data such as exercise, sleep, and some diet in daily life, and synchronize these data with mobile phones, tablets, and ipod touch, and play a role in guiding healthy life through data.

At present, the functions of smart bracelets that appear on the market are mostly focused on sports functions, such as pedometers, walking distance, sleep records, and intelligent interactions with mobile devices, such as answering calls and sending and receiving text messages. There are no fully functional ones that can Smart bracelet products for health monitoring of human vital signs. Using traditional methods to detect body temperature, heart rate, blood oxygen concentration, and blood pressure often requires a larger instrument, which takes a certain amount of time. After obtaining the data, it is often necessary to repeat the same operation process when measuring the next set of data, which is wasteful. Manpower and material resources, at the same time, the accuracy of the instrument is unstable after a long time of use, and there are usually errors in real-time positioning indoors and outdoors.

Contents of the invention

The present invention overcomes the deficiencies of the prior art and provides a smart wristband for monitoring human body signs that can be accurately positioned, a smart wristband that can monitor human body temperature, heart rate, blood oxygen concentration, blood pressure in real time and can be positioned indoors and outdoors in real time.

In order to achieve the above object, the present invention is achieved through the following technical solutions.

The intelligent wristband for monitoring human body signs that can be accurately positioned includes a wristband and an outer shell. The wristband passes through the outer shell. The outer shell is provided with an OLED display. Detection sensor, heart rate and blood oxygen detection sensor, pedometer sensor, GPS locator, red dot positioning module, battery, the single-chip microcomputer is respectively connected with the human body temperature detection sensor, heart rate and blood oxygen detection sensor, pedometer sensor, GPS positioning connected with the device and the red dot positioning module, the heart rate and blood oxygen detection sensor is set at the bottom of the outer casing to directly contact the user's skin, and the human body temperature detection sensor is set at a distance of 1-2 cm from the bottom of the outer casing. The bluetooth chip is connected with the single-chip microcomputer to connect the smart device, and the battery provides power for the whole smart bracelet.

The circuit structure of the red dot positioning module is: the chip used by the red dot positioning module is U2.

Pin 3 of the chip U2 is connected to one end of the resistor R25 in parallel, one end of the capacitor C14 is connected to one end of the resistor R36, the other end of the resistor R36 is connected to the pin 3 of the crystal oscillator Y1, and pin 1 of the crystal oscillator Y1 is connected in parallel One end of the resistor R37 is connected to one end of the capacitor C13, and the other end of the capacitor C13 is grounded; the pin 2 of the crystal oscillator Y1 is grounded, and the pin 4 of the crystal oscillator Y1 is connected to one end of the inductor L10 in parallel with the resistor R24 One end is connected, and the other end of the resistor R24 is grounded.

Pin 4 of the chip U2 is connected in parallel with the other end of the resistor R37 and then connected with one end of the capacitor C63, and the other end of the capacitor C63 is grounded.

The 5 pins of the chip U2 are connected in series with a resistor R10 and then grounded; the 6 pins of the chip U2 are connected in series with a capacitor C21 and then grounded; the 7 pins of the chip U2 are connected in series with a capacitor C24 and then grounded; the 10 pins of the chip U2 are connected in series Connect to ground after capacitor C29.

The 8 pins of the chip U2 are connected in parallel with one end of the capacitor C17 and then connected with the resistor R7 and one end of the capacitor C15 in turn.

Pin 9 of the chip U2 is sequentially connected in parallel with one end of the capacitor C31, the other end of the capacitor C17 and the other end of the capacitor C15; the other end of the capacitor C31 is grounded.

Pin 11 of the chip U2 is sequentially connected to one end of the capacitor C32, one end of the capacitor C18, and then sequentially connected to the capacitor C19 and one end of the resistor R8; the other end of the capacitor C32 is grounded.

The 12 pins of the chip U2 are connected in parallel with the other end of the capacitor C18 and the other end of the resistor R8.

Further, the heart rate and blood oxygen detection sensor measures human heart rate, blood oxygen, and blood pressure values through an optical sensor combined with an algorithm that obtains blood pressure values by establishing a linear regression equation by extracting pulse waves; the red dot positioning module realizes that the indoor position error is within 15-25cm positioning.

Further, the single-chip microcomputer is made of FPB material, which is easy to bend, so that the measurement of relevant physical sign data of the wearer will not be affected during the activity.

Further, the battery is a lithium battery that is converted into a regulated power supply through a voltage-stabilizing chip to supply power to each module.

The detection module of the present invention is equipped with a temperature sensor, a heart rate and blood oxygen sensor, combined with an algorithm for obtaining blood pressure values by extracting pulse waves to establish a linear regression equation and corresponding peripheral circuits to measure the human heart rate, blood oxygen and blood pressure values. The human body temperature detection sensor is located on the back of the human wrist when worn, and has a distance of 1-2cm from the human skin. When the detection function is turned on, the sensor starts to emit detection signals. The red light emitted by the heart rate blood oxygen detection sensor can detect Blood circulation, after the peripheral circuit filters and amplifies the required signal, the signal is transmitted to the MCU in real time, and the MCU generates the measured human body signs (heart rate, blood oxygen concentration, blood pressure) after processing through a specific algorithm and displays them on the OLED screen .

The invention uses the MPU6050 module to realize the pedometer function, and the existence of the GPS module enables real-time outdoor positioning, enabling users to know their own location in real time, and can also be used to prevent children and the elderly from getting lost, and to track athletes' training routes.

The red dot positioning module is based on the sensing system of UWB technology. The indoor positioning system consists of a local area network, an anchor node, a mobile node, a bridge node, and a server. Anchor nodes and bridge nodes form a basic positioning wireless network. The anchor nodes are fixed and installed at known locations as position references. In addition to the function of anchor nodes, bridge nodes also have Ethernet ports. Through network devices (routers), the positioning wireless network and Location server interconnection. When the mobile node enters the signal coverage area of the positioning wireless network, it transmits and receives UWB signals with the anchor node, and performs positioning through time-to-arrival/time difference of arrival (TOA/TDOA) and other algorithm processing of UWB signals. The red dot positioning module involved in the present invention, that is, the mobile node, is connected to the MCU through the UART to perform two-phase transmission and processing of positioning data, and realize positioning with an indoor position error of 15-25cm.

The OLED screen of the present invention can display the measured physical sign data in real time, and after the internal bluetooth module is matched with the bluetooth module of the smart phone, the detected data will also be transmitted to the mobile phone, and the data will be presented synchronously through the written app software, which can also The measured data is transmitted to the big data platform, which can achieve disease classification and early warning. In addition, the red dot positioning module can also transmit the location information of the carrier and the measured physical signs data to the server, which can achieve indoor real-time positioning and alarm.

Compared with the prior art, the present invention has the following beneficial effects.

The present invention miniaturizes, facilitates, and accurately replaces the traditional cumbersome measurement method, integrates key human body sign detection data into one, makes the user clear at a glance through the terminal, and has the functions of precise positioning and real-time alarm , avoiding the situation that the emergency situation of the human body cannot be treated in time due to positioning error or alarm delay.

Description of drawings

Fig. 1 is the work flowchart of the present invention.

Fig. 2 is a structural schematic diagram of the present invention.

Fig. 3 is a bottom view of Fig. 2 .

FIG. 4 is a side view of FIG. 2 .

Figure 5 is a circuit diagram of the heart rate blood oxygen detection sensor.

Figure 6 is a circuit diagram of the red dot positioning module.

Among them, 1 is the outer casing, 2 is the wristband, 3 is the OLED display screen, 4 is the heart rate and blood oxygen detection sensor, and 5 is the body temperature detection sensor.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments and accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. The technical solutions of the present invention will be described in detail below in conjunction with the examples, but the scope of protection is not limited thereto.

As shown in Figures 1-4, the intelligent wristband for monitoring human body signs that can be accurately positioned includes a wristband 2 and an outer casing 1, the wristband 2 passes through the outer casing 1, the outer casing 1 is provided with an OLED display 3, and the outer casing 1 Inside the package are MCU model STM32F103RBT6, bluetooth chip model TI-CC2541BLE, human body temperature detection sensor 5 model MLX90615, heart rate blood oxygen detection sensor 4 model MAX30100, pedometer sensor, GPS model UM220-INS Positioner, red dot positioning module, and battery; among them, the battery is converted from a 3.7V lithium battery to a 3.3V regulated power supply through the voltage regulator chip tps7333 to supply power for each module. The MCU is made of FPB material, which is easy to bend. The single-chip microcomputer is respectively connected with the human body temperature detection sensor 5, the heart rate blood oxygen detection sensor 4, the pedometer sensor, the GPS locator, and the red dot positioning module. Contact, the human body temperature detection sensor 5 is arranged at the bottom 1-2cm away from the outer casing, and the bluetooth chip is connected with the single-chip microcomputer for connecting the smart device.

The heart rate and blood oxygen detection sensor 4 is to measure the heart rate, blood oxygen and blood pressure values of the human body through the optical sensor combined with the algorithm of obtaining the blood pressure value by extracting the pulse wave to establish a linear regression equation; the red dot positioning module realizes the indoor position error of 15-25cm. position.

Among them, the main chip of the red dot positioning module is chip U2 (DW1000-ES). This chip has 49 pins, of which pin 1 and pin 2 of chip U2 do not need to be connected for future development; pin 3 and pin 4 of chip U2 Connect resistors R36, R37, crystal oscillator Y1, capacitors C13, C14, resistors R24, R25 to provide a clock signal for the chip to work.

Pin 5, pin 6, pin 7, and pin 10 of the chip U2 are respectively grounded through the resistor R10, the capacitor C21, the capacitor C21, the capacitor C24, and the capacitor C29.

Capacitors C15, C17, and R7 are connected between pin 8 and pin 9 of the chip U2 to function as a filter.

Capacitors C18, C19, and R8 are connected between pins 11 and 12 of the chip U2 to function as filters. The RF signal of chip U2 is transmitted from pin 16 and pin 17 to the coupler through capacitors C39 and C40, and the UNB pin of the coupler is connected to the onboard antenna ANT1 to realize the generation, transmission and reception of UWB signals.

Pin 23 of the chip U2 is the wakeup pin WAKEUP of the chip, and the external main MCU sends a signal through the MCU to determine the standby wakeup of the chip U2.

Pin 47 of the chip U2 is connected to a power supply of 3.0V to provide a working voltage for the operation of the chip U2.

The pins 39 and 40 of the chip U2 are respectively connected to the MOSI and MISO of the main MCU through resistors R13 and R12. The data communication mode between the chip U2 and the main MCU is SPI, and the resistors R12 and R13 are protective circuits.

Pin 41 of the chip U2 is connected to the CLK pin of the main MCU through a resistor R14 to provide a clock signal for SPI communication, and its resistor 14 is used as a protection circuit.

The heart rate and blood oxygen detection sensor module is mainly composed of a voltage conversion chip U4 and an infrared sensor U5. The power supply provides 3.3V voltage for the blood oxygen heart rate blood pressure sensor through the 3.3V voltage conversion chip. One end of 3.3V is connected to the input pin 3 of the voltage conversion chip U4, pin 1 of U4 is grounded, and pin 2 of U4 outputs 1.8V voltage. The U4 chip converts the input voltage of 3.3V into 1.8V and outputs it. One end of the input voltage is connected to capacitor C3, and the other end of C3 is grounded to filter for the U4 chip.

At the same time, the input voltage 3.3V is connected to the infrared LED driver pin 9 and pin 10 of the chip U5 to provide voltage for the infrared LED drive.

One end of the output pin 2 of the chip U4 is connected to capacitors C4 and C5, and the other ends of the capacitors C4 and C5 are both grounded for filtering to stabilize the output voltage.

The output pin 2 of the chip U4 is connected to the pin 11 of the chip U5 to provide voltage for driving the chip U5.

The output pin 2 of the chip U4 is connected to the resistor R6, and the other end of R6 is connected to the pin 6 of the chip U5. The function is to provide a pull-up resistor for the SDA pin.

The output pin 2 of the chip U4 is connected to the resistor R5, and the other end of R5 is connected to the pin 5 of the chip U5. The function is to provide a pull-up resistor for the SCL pin.

The output pin 2 of the chip U4 is connected to the resistor R7, and the other end of R7 is connected to the interrupt pin 13 of the chip U5. The function is to provide a pull-up resistor for the interrupt pin.

The specific working process is as follows: the human body temperature detection sensor 5 of the model MLX90615 and the heart rate and blood oxygen detection sensor 4 of the model MAX30100 both transmit and collect signals, convert the collected signals into electrical signals, and input them to the STM32F103RBT6 microcontroller. The blood pressure measurement algorithm calculates the collected data, and displays the calculated blood pressure, heart rate, and blood oxygen values on the OLED display 3, and at the same time transmits them to the TI-CC2541BLE Bluetooth module through the serial port. When the Bluetooth module on the wristband and the mobile phone After Bluetooth matching and docking, the data is transmitted to the user's mobile phone in real time, the value is displayed in the mobile application in real time, and the data is synchronously sent to the background big data platform, and an early warning is issued when the value exceeds the normal range. Correspondingly, the 3.7V rechargeable lithium battery converts the voltage into 3.3V to power the circuit through the voltage regulator chip tps7333.

When the positioning function of the wristband is activated outdoors, the UM220-INS GPS locator is turned on, and the GPS locator communicates with the satellite to directly output the combined navigation and positioning results. The obtained latitude and longitude values are synchronized with the mobile phone through Bluetooth, and the Baidu map API interface is accessed through the mobile phone , and convert the latitude and longitude values into specific locations in real time and return them to the wristband. The user can know the location of the person wearing the bracelet, and can also query the travel route of the bracelet wearer through the Internet. This function can be used to prevent children from being lost and to understand children's travel routes, and it can also be used for the elderly to prevent accidents from happening; when the indoor positioning function is activated, the red dot positioning module starts to send UWB signals, and conducts UWB signals with indoor bridge nodes and anchor nodes The location of the mobile node is determined by the TDOA algorithm, and the measured physical sign data and location data are transmitted to the server through the MCU serial port and displayed on the visual 3D user software.

After the collected data is processed by the single-chip microcomputer, the single-chip microcomputer presents the information on the OLED display 3. At the same time, after the Bluetooth module TI-CC2541BLE is matched with the Bluetooth module of the mobile phone, the mobile phone application can be opened to display the data in real time and transmit the data to The big data platform also issues an early warning when the data exceeds the normal range.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments and accompanying drawings. It cannot be determined that the specific embodiments of the present invention are limited thereto. Under the premise of the invention, some simple deduction or replacement can also be made, which should be regarded as belonging to the invention and the scope of patent protection determined by the submitted claims.

Claims (3)

1. A smart wristband for monitoring human body signs that can be accurately positioned, including a wristband and an outer shell, the wristband passes through the outer shell, and the outer shell is provided with an OLED display, and it is characterized in that: a single-chip microcomputer is packaged in the outer shell , Bluetooth chip, human body temperature detection sensor, heart rate blood oxygen detection sensor, pedometer sensor, GPS locator, red dot positioning module, battery, the single-chip microcomputer is respectively connected with the human body temperature detection sensor, heart rate blood oxygen detection sensor, The pedometer sensor, GPS locator, and red dot positioning module are connected. The heart rate and blood oxygen detection sensor is arranged at the bottom of the outer casing to directly contact the user's skin. The human body temperature detection sensor is arranged at a distance of 1 -2cm, the bluetooth chip is connected to the single-chip microcomputer for connecting smart devices, and the battery provides power for the entire smart bracelet; The heart rate and blood oxygen detection sensor measures human heart rate, blood oxygen, and blood pressure values through an optical sensor combined with an algorithm for obtaining blood pressure values by establishing a linear regression equation by extracting pulse waves; the red dot positioning module realizes that the indoor position error is within 15- 25cm positioning; The circuit structure of the red dot positioning module is: the chip used by the red dot positioning module is U2; Pin 3 of the chip U2 is connected to one end of the resistor R25 in parallel, one end of the capacitor C14 is connected to one end of the resistor R36, the other end of the resistor R36 is connected to the pin 3 of the crystal oscillator Y1, and pin 1 of the crystal oscillator Y1 is connected in parallel One end of the resistor R37 is connected to one end of the capacitor C13, and the other end of the capacitor C13 is grounded; the pin 2 of the crystal oscillator Y1 is grounded, and the pin 4 of the crystal oscillator Y1 is connected to one end of the inductor L10 in parallel with the resistor R24 One end is connected, and the other end of the resistor R24 is grounded; The 4 pins of the chip U2 are connected in parallel with the other end of the resistor R37 and then connected with one end of the capacitor C63, and the other end of the capacitor C63 is grounded; The 5 pins of the chip U2 are connected in series with a resistor R10 and then grounded; the 6 pins of the chip U2 are connected in series with a capacitor C21 and then grounded; the 7 pins of the chip U2 are connected in series with a capacitor C24 and then grounded; the 10 pins of the chip U2 are connected in series Ground after connecting capacitor C29; The 8 pins of the chip U2 are connected in parallel with one end of the capacitor C17 and then connected with the resistor R7 and one end of the capacitor C15 in turn; The 9 pins of the chip U2 are sequentially connected in parallel with one end of the capacitor C31, the other end of the capacitor C17 and the other end of the capacitor C15; the other end of the capacitor C31 is grounded; Pin 11 of the chip U2 is sequentially connected to one end of the capacitor C32 and one end of the capacitor C18 and then connected to the capacitor C19 and one end of the resistor R8 in turn; the other end of the capacitor C32 is grounded; The 12 pins of the chip U2 are connected in parallel with the other end of the capacitor C18 and the other end of the resistor R8. 2. The smart wristband for monitoring human body signs that can be accurately positioned according to claim 1, characterized in that: the single-chip microcomputer is made of FPB material. 3. The smart wristband capable of accurately positioning human body signs according to claim 1, characterized in that: the battery is a lithium battery that is converted into a regulated power supply through a voltage-stabilizing chip to supply power to each module.