A tabletop heart rate, blood oxygen and body temperature detection device
By designing a countertop heart rate, blood oxygen temperature detection equipment, using LED light sources and light sensors to detect skin reflected signals, and combining the acquisition chip and main control chip to process data, the heart rate, blood oxygen and body temperature can be easily and accurately detected on the desktop, solving the inconvenience and error problems of traditional methods, and having better real-time detection effects.
Patent Information
- Application Number
- CN202421342388.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-13
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-13
AI Technical Summary
The prior art is difficult to measure heart rate and blood oxygen conveniently and efficiently on the desktop, and traditional methods have problems of inconvenience and large errors.
A countertop heart rate blood oxygen temperature detection device is designed, including a collection strip installed on the desktop. The collection strip is equipped with a main control chip, a data interface and multiple sets of detection devices. The detection device includes a heart rate detection device and a blood oxygen detection device. It detects the reflected signals of the skin through an LED light source and a light sensor, and combines the acquisition chip and the main control chip to process data to realize the detection of heart rate, blood oxygen and body temperature.
It realizes convenient and accurate detection of heart rate, blood oxygen and body temperature on the desktop, solves the inconvenience and error problems of traditional methods, and has better real-time detection results.
Smart Images
Figure CN222737868U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a blood oxygen detection device, in particular to a table-top heart rate, blood oxygen and body temperature detection device. Background Art
[0002] According to the Lambert-Beer law, the absorbance of a substance at a certain wavelength is proportional to its concentration. When light of a constant wavelength is irradiated on human tissue, the light intensity measured after absorption and reflection attenuation by human tissue reflects the structural characteristics of the irradiated tissue to a certain extent. Since oxygenated hemoglobin (HbO2) and reduced hemoglobin in the blood have unique absorption spectrum characteristics in the red and infrared light regions (600nm~1000nm), this characteristic can be used to measure the oxygen saturation value in human blood in a non-invasive way to achieve blood oxygen saturation detection.
[0003] Specifically, the pulse oximeter designed based on the above principle uses red and infrared light emitted by two wavelengths of light-emitting diodes to act on the peripheral parts of the human body (such as fingers or earlobes, etc.) through transmission or reflection. The transmitted or reflected light signal is detected by the photosensor on the opposite side. According to the different absorption rates of red light and infrared light to oxygenated hemoglobin and reduced hemoglobin, the detection circuit first obtains the changing waveform of light absorption caused by pulsating arterial blood flow, and then calculates the blood oxygen saturation and pulse rate value based on this.
[0004] Heart rate is the best indicator of the strength of heart function, and it is also a physiological indicator of human exercise intensity. The status of many organs in the human body is reflected in the form of heart rate. The traditional way to measure heart rate is to use a stethoscope, but this method is very inconvenient and has large errors. Subsequently, a piezoelectric heart rate meter appeared that measures heart rate by measuring changes in pulse pressure, but the piezoelectric meter is contact-type, which is difficult to operate and the sensitivity cannot be guaranteed.
[0005] With the development of society and the accelerated pace of life, especially for the current office workers, who spend a lot of time processing documents on computers every day, if a device for measuring heart rate and blood oxygen can be provided on the desktop, real-time health detection can be achieved, which can also serve as a better reminder for the workers. Utility Model Content
[0006] The utility model provides a tabletop heart rate, blood oxygen and body temperature detection device, which solves the problem of measuring heart rate and blood oxygen on a desktop. The technical solution is as follows:
[0007] A desktop heart rate, blood oxygen and body temperature detection device includes a collection bar installed on a desktop, the collection bar is provided with a main control chip, a data interface and multiple groups of detection devices, the main control chip is connected to the detection device and the data interface respectively, and the detection data of the detection device is sent to an external control device through the data interface, and the detection device is provided with multiple heart rate detection devices and multiple blood oxygen detection devices.
[0008] The detection device is provided with an acquisition chip, and the acquisition chip adopts the RTL8762DK chip. The acquisition chip is connected to the heart rate detection device and the blood oxygen detection device.
[0009] The detection devices are connected in series in sequence. On the right side of the RTL8762DK chip, pins 30 and 28 are used to connect to the next set of RTL8762DK chips, and pins 6 and 7 are used to connect to the previous set of RTL8762DK chips, so that the collected data can be transmitted in sequence.
[0010] The detection device includes 1-5 heart rate detection devices and 1-5 blood oxygen detection devices.
[0011] The heart rate detection device is provided with a first light sensor and a first LED light source. The first light sensor adopts the Vickers VC32s chip, and the first LED light source adopts the Yonglin LED light source. The first LED light source emits a green light signal. The green light penetrates the skin and reflects a certain signal to the first light sensor. The first light sensor calculates the ppg signal through the signal difference, and then converts it into a digital signal to obtain the heart rate value.
[0012] The blood oxygen detection device is provided with a second light sensor and a second LED light source. The second light sensor adopts the Vickers VC32s chip, and the second LED light source adopts the Yonglin LED light source. The second LED light source emits red light and infrared light signals. The red light and infrared light penetrate the skin and reflect certain signals to the second light sensor. The second light sensor calculates the ppg signal through the signal difference, and then converts it into a digital signal to obtain the blood oxygen value.
[0013] The main control chip adopts the realtek8762c chip, and the data interface includes a bluetooth communication module and a 485 communication module.
[0014] The detection device is provided with an infrared sensor for determining whether there is an obstruction approaching the detection device.
[0015] The detection device is provided with a temperature sensor for measuring the skin temperature inside the human wrist.
[0016] The upper surface of the collection bar is parallel to the upper surface of the desktop, and the upper surface of the desktop is provided with a slot for installing and placing at least one group of collection bars.
[0017] The tabletop heart rate, blood oxygen and body temperature detection device has a better real-time detection effect by installing the device on the desktop surface. The utility model has the following advantages: (1) The device is embedded in the desktop surface, the upper surface of the device is smooth and highly consistent with the surrounding desktop surface, and does not occupy the space above the desktop; (2) The detection result is accurate, and the detection of heart rate, blood oxygen and body temperature can be realized. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the structure of the collection bar A of the table heart rate, blood oxygen and body temperature detection device;
[0019] Figure 2 It is a schematic diagram of the structure of the collection bar B of the table heart rate, blood oxygen and body temperature detection device;
[0020] Figure 3 is a schematic structural diagram of the detection device;
[0021] Figure 4 is a schematic diagram of the structure of the acquisition chip;
[0022] Figure 5 It is a chip schematic diagram of the 485 communication module;
[0023] Figure 6 Schematic diagram of the structure of the optical sensor. DETAILED DESCRIPTION
[0024] The tabletop heart rate, blood oxygen and body temperature detection device comprises a collection bar installed on a desktop, wherein the collection bar is provided with a main control chip, a data interface and multiple groups of detection devices, each group of detection devices comprises 1-5 heart rate detection devices and 1-5 blood oxygen detection devices, wherein the heart rate detection device is provided with a first light sensor and a first LED light source for heart rate detection; the blood oxygen detection device is provided with a second light sensor and a second LED light source for blood oxygen detection; the main control chip is connected to the detection device and the data interface respectively, and sends the detection data of the detection device to an external control device through the data interface.
[0025] The upper surface of the collection bar is parallel to the upper surface of the desktop. The upper surface of the desktop is provided with a slot for installing the collection bar. In this embodiment, the left and right sides of the upper surface of the desktop are respectively provided with slots. The left slot (or the right slot) is provided with a collection bar A, and the right slot (or the left slot) is provided with a collection bar B, so that the left wrist and / or right wrist of the user can be detected.
[0026] like Figure 1As shown, the acquisition bar A is provided with four groups of detection devices with the same structure, namely the first detection device 1, the second detection device 2, the third detection device 3 and the fourth detection device 4. The main control chip 100 and the power supply are provided on the left side of the acquisition bar A. The main control chip is used to receive the detection data of the four detection devices and the detection data of the acquisition bar B, and send the collected heart rate detection data and blood oxygen detection data to the external control device through the data interface. The power supply is used to supply power to the main control chip and the detection device.
[0027] like Figure 2 As shown, the acquisition bar B is provided with ten groups of detection devices with the same structure, namely the fifth detection device 5, the sixth detection device 6, the seventh detection device 7, the eighth detection device 8, the ninth detection device 9, the tenth detection device 10, the eleventh detection device 11, the twelfth detection device 12, the thirteenth detection device 13 and the fourteenth detection device 14. The detection data of the acquisition bar B is sent to the main control chip 100, and the main control chip 100 sends the collected heart rate detection data and blood oxygen detection data to the external control device through the data interface.
[0028] The main control chip adopts the realtek8762c chip, which can send the collected data to the external control device through the data interface; the data interface includes a wireless Bluetooth communication module and a wired 485 communication module to realize data communication. The detection devices set by the collection strips A and B can independently collect heart rate and blood oxygen, and the detection devices are connected in series.
[0029] like Figure 3 As shown, the detection device includes three heart rate detection devices, four blood oxygen detection devices and an acquisition chip U10. The three heart rate detection devices are respectively a first heart rate detection device D31, a second heart rate detection device D32, and a third heart rate detection device D33. The four blood oxygen detection devices are respectively a first blood oxygen detection device D30, a second blood oxygen detection device D34, a third blood oxygen detection device D35, and a fourth blood oxygen detection device D36. The three heart rate detection devices are located around the acquisition chip U10, distributed on the front side, the back side, and the left side of the acquisition chip U10. The four blood oxygen detection devices are located around the acquisition chip U10, two on the front side of the acquisition chip U10, and two on the back side of the acquisition chip U10. Both the heart rate detection device and the blood oxygen detection device obtain analog signals through reflective photoelectric signal measurement, and then convert the analog signals into digital signals to obtain measurement results.
[0030] The first light sensor of the heart rate detection device adopts the VC32s chip of Vicksin Micro, and the first LED light source adopts the Yonglin LED light source. When the wrist covers the detection device, the first LED light source emits light, and the reflected light source of the first LED light source is received by the first light sensor to judge the heart rate, and the heart rate data is sent to the main control chip through the acquisition chip U10. The principle of heart rate measurement is to use green light to send a signal, which will penetrate the skin and reflect a certain signal to the first light sensor, calculate the ppg signal through the signal difference, and then convert it into a digital signal to obtain the heart rate value.
[0031] The second light sensor of the blood oxygen detection device also uses the Weikexinwei VC32s chip, and the second LED light source uses the Yonglin LED light source. When the wrist is covered on the detection device, the second LED light source emits light, and the second light sensor receives the reflected light source of the second LED light source to judge the blood oxygen, and send the blood oxygen data to the main control chip through the acquisition chip U10. The principle of blood oxygen measurement is similar to that of heart rate measurement, except that the signals emitted are red light and infrared light (invisible light), and the blood oxygen value is calculated by the difference between the two signals.
[0032] like Figure 4 As shown, to ensure the measurement effect, each set of detection devices is equipped with a collection chip. Collection strips A and B have a total of 14 sets of detection devices, corresponding to 14 sets of collection chips U10. The collection chip sends the collected blood oxygen heart rate data to the main control chip. The collection chip uses the RTL8762DK chip. The 14 sets of collection chips are connected in sequence. Figure 4 In the figure, on the right side of the RTL8762DK chip, pin 30 (P0_2) and pin 28 (P0_4) are used to connect to the next set of RTL8762DK chips, and pin 6 and pin 7 are used to connect to the previous set of RTL8762DK chips, so as to transmit the collected data in sequence.
[0033] like Figure 5 As shown, the 485 communication module uses the MS2561 chip. Figure 6 As shown, the first light sensor and the second light sensor use the same light sensor, and the light sensor uses the Vectron VC32s chip for collecting light signals and data processing.
[0034] Furthermore, in order to determine whether the wrist is close to the detection device, the detection device is provided with an infrared sensor U6. The infrared signal of the infrared sensor is sent to the detection device. The detection device can determine whether there is an obstruction through the infrared signal. When there is an obstruction, it is generally believed to be the wrist of the human body, and then determine how many groups of detection devices are blocked, and the blocked detection devices start working.
[0035] In addition, the detection device may also be provided with a temperature sensor U25, which is a high-precision sensor with an accuracy of plus or minus 0.1°C. Different from the NTC thermistor electronic method of conventional cheap electronic thermometers, this device can allow the measurement accuracy to be continuous and the temperature to be output quickly, so when the wrist part is fully in contact with the temperature sensor part, the skin temperature of the inside of the human wrist is measured after thermal equilibrium is reached.
[0036] The use process of the utility model is as follows: the control device inputs instructions to the main control chip 100 through the 485 communication module to start detecting heart rate or blood oxygen. The main control chip 100 controls the 14 groups of detection devices of the acquisition strips A and B to start measurement. The detection device can determine whether there is an obstruction (when there is an obstruction, it is generally considered to be the wrist of the human body) covering a certain group or several groups of detection devices through infrared signals, and then the covered detection device will continue to measure the signal value of the covered area to obtain the measurement result of the heart rate or blood oxygen. When other detection devices detect that the air is measured, they will automatically sleep and not measure. After obtaining the results, the main control chip transmits the data to the control device through the 485 communication module. The control device processes the collected data and displays it on the display front end. During measurement, the person being measured should keep his wrist as close as possible to the sensor of the detection device to prevent abnormal signals due to light leakage, resulting in measurement failure or abnormal measurement results.
[0037] The tabletop heart rate, blood oxygen and body temperature detection device has a better real-time detection effect by installing the device on the desktop surface. The utility model has the following advantages: (1) The device is embedded in the desktop surface, the upper surface of the device is smooth and highly consistent with the surrounding desktop surface, and does not occupy the space above the desktop; (2) The detection result is accurate, and the detection of heart rate, blood oxygen and body temperature can be realized.
Claims
1. A tabletop heart rate, blood oxygen and body temperature detection device, characterized by: It includes a collection bar installed on a desktop, which is provided with a main control chip, a data interface and multiple groups of detection devices. The main control chip is connected to the detection device and the data interface respectively, and the detection data of the detection device is sent to an external control device through the data interface. The detection device is provided with multiple heart rate detection devices and multiple blood oxygen detection devices.
2. The tabletop heart rate, blood oxygen and body temperature detection device according to claim 1, characterized in that: The detection device is provided with an acquisition chip, and the acquisition chip adopts the RTL8762DK chip. The acquisition chip is connected to the heart rate detection device and the blood oxygen detection device.
3. The tabletop heart rate, blood oxygen and body temperature detection device according to claim 2, characterized in that: The detection devices are connected in series in sequence. On the right side of the RTL8762DK chip, pins 30 and 28 are used to connect to the next set of RTL8762DK chips, and pins 6 and 7 are used to connect to the previous set of RTL8762DK chips, so that the collected data can be transmitted in sequence.
4. The tabletop heart rate, blood oxygen and body temperature detection device according to claim 1, characterized in that: The detection device includes 1-5 heart rate detection devices and 1-5 blood oxygen detection devices.
5. The tabletop heart rate, blood oxygen and body temperature detection device according to claim 1, characterized in that: The heart rate detection device is provided with a first light sensor and a first LED light source. The first light sensor adopts the Vickers VC32s chip, and the first LED light source adopts the Yonglin LED light source. The first LED light source emits a green light signal. The green light penetrates the skin and reflects a certain signal to the first light sensor. The first light sensor calculates the ppg signal through the signal difference, and then converts it into a digital signal to obtain the heart rate value.
6. The tabletop heart rate, blood oxygen and body temperature detection device according to claim 1, characterized in that: The blood oxygen detection device is provided with a second light sensor and a second LED light source. The second light sensor adopts the Vickers VC32s chip, and the second LED light source adopts the Yonglin LED light source. The second LED light source emits red light and infrared light signals. The red light and infrared light penetrate the skin and reflect certain signals to the second light sensor. The second light sensor calculates the ppg signal through the signal difference, and then converts it into a digital signal to obtain the blood oxygen value.
7. The tabletop heart rate, blood oxygen and body temperature detection device according to claim 1, characterized in that: The main control chip adopts the realtek8762c chip, and the data interface includes a bluetooth communication module and a 485 communication module.
8. The tabletop heart rate, blood oxygen and body temperature detection device according to claim 1, characterized in that: The detection device is provided with an infrared sensor for determining whether there is an obstruction approaching the detection device.
9. The tabletop heart rate, blood oxygen and body temperature detection device according to claim 1, characterized in that: The detection device is provided with a temperature sensor for measuring the skin temperature inside the human wrist.
10. The tabletop heart rate, blood oxygen and body temperature detection device according to claim 1, characterized in that: The upper surface of the collection bar is parallel to the upper surface of the desktop, and the upper surface of the desktop is provided with a slot for installing and placing at least one group of collection bars.