CN1985751B - Wearable physiological sign detector, physiological sign telemetering and alarming system - Google Patents

Abstract

A wearable physiological sign detector, a physiological sign telemetering and alarming system and a method thereof are disclosed, the system comprises a physiological sign detector, an analysis and judgment base station and an emergency processing device, the physiological sign detector and the analysis and judgment base station send sensed physiological sign information in a wireless or wired mode, and when an emergency happens, the analysis and judgment base station automatically sends an emergency signal and the sensed physiological sign information to the emergency processing device in a wireless or wired mode; the invention senses PPG signals from the back of the ear of a wearer, increases the wearing comfort of the wearer, comprehensively senses the sudden change of the posture of the wearer by pulse signals, motion and signals of the skin surface or the ambient temperature, and the motion and pulse signals are mutually correlated so as to compensate motion artifacts and reduce the interference of the motion artifacts. The emergency alarm system can be added into an automatic emergency alarm service system, and can automatically send a call to an emergency processing device or an emergency center and transmit physiological sign information when an emergency occurs.

Description

Wearable Physiological Sign Detector, Physiological Sign Telemetry and Alarm System

technical field

The present invention relates to a wearable physiological sign detector, physiological sign telemetry and alarm system and method, in particular to a wearable physiological sign detection which senses the PPG signal from the part behind the wearer's ear and calculates the pulse rate and oxygen saturation Detector, physiological sign telemetry and alarm system and method.

Background technique

As we all know, the world has entered the age of population aging. How to ensure that the elderly spend their old age safely is a special problem among many social problems. According to relevant experts and figures provided by medical and health care departments, sudden diseases have been on the rise among the elderly in recent years, and they are rapidly becoming younger. Taking Hong Kong as an example, there are one million elderly people over 60 years old, and 800,000 of them are over 65 years old. What deserves more attention is the sharp increase in "long-lived people", that is, those over 80 years old. Of these seniors, more than 100,000 currently live alone. Another 400,000 seniors are home alone while other family members are away at work. They face very similar problems to seniors living alone. Similar situations exist in other countries around the world.

Following global trends, Hong Kong is switching from an expensive medical pension system to a more frugal community-based and home-based pension model. Families and communities, however, often do not discharge these responsibilities very well. As the geriatric population increases, it becomes important to continuously and closely monitor the physiological signs of the elderly.

Based on the above reasons, since 1996, Hong Kong has established a 24-hour self-emergency alarm service (EAS) for middle-aged and elderly people. In an emergency, the wearer can press the distress button worn on the body or at the side, and the emergency signal can be sent to the service center through the telephone line. Although EAS is successful, when an emergency occurs and the wearer is in critical condition, and it may be too late or unable to send an emergency signal to EAS, it is very necessary to automatically initiate an emergency call to the service center immediately, that is, the wearable physiological sign detector Monitor the wearer's physiological sign information at any time. When the wearer's physiological sign information is in a critical situation, the monitored critical situation and the elderly's current physiological sign signal and the historical record of the physiological sign before the call will be sent to the service center immediately, so as to serve the elderly People add more security guarantees.

Currently, the implementation of the wearable physiological sign detector adopts two technologies, one is to use electrodes to sense the signal of the chest electrocardiogram (ECG), and the other is to use a photosensitive sensor to sense the pulse or other related parameters. Sensing the electrocardiogram (ECG) signal of the chest of the monitoring object needs to attach electrodes to the chest. Since the ECG electrodes are attached to the chest skin, the affinity to the wearer is very poor; using photosensitive sensors (photoplethysmography, PPG), the reported sensitivity The sensor is located on finger clips, rings, earlobe clips, earplugs, and wristbands, and the pulse signal is sensed at the finger or wrist. Due to the frequent movement of fingers and wrists, the sensed PPG signal is susceptible to motion artifacts. In addition, to use this method to obtain reliable PPG signals at the above-mentioned parts, it is necessary to apply a certain pressure to the measurement part, which makes the monitoring object feel uncomfortable. There is also a use of the earlobe as a location point for transmitting pulse oximetry tests, however, the clamping device used to support the sensor above the earlobe is uncomfortable for the wearer to wear for a long time; An optical sensor is inserted in the tract to sense the PPG signal from the contact tissue. However, the wearing comfort of this method is still not ideal.

These methods either require pressure to be applied to the sensing site, or their test results are not very reliable when the body moves because they are susceptible to motion artifacts. On the other hand, traditional wearable physiological sign detectors do not monitor the wearer's exercise state or ability.

Contents of the invention

The purpose of the present invention is to provide a physiological sign detector that senses PPG signal from the position behind the pinna and calculates the pulse rate and blood oxygen saturation. The physiological sign detector is worn on the back of the pinna and can increase the wearer's Wearing comfort. Additionally, incorporation of a temperature sensor may measure a signal of the wearer's skin site or ambient temperature. And combined with the pulse signal and motion signal, it can provide comprehensive sensing when the wearer's posture changes suddenly, and correlate the motion and pulse signal to compensate for motion artifacts, thereby reducing the interference of motion artifacts.

Another object of the present invention is to provide a physiological sign telemetry and alarm system and method, which can automatically send a call to the emergency treatment device or emergency center and transmit the current physiological sign signal and the history of the physiological sign before the call when the wearer is in an emergency Record.

Based on the above purpose, the present invention provides a wearable physiological sign detector, which is applied to the front end of the telemetry and alarm system for physiological signs. The wearable physiological sign detector includes a physiological sign sensor and a main body fixing frame. Inside the frame, it is used to sense the wearer’s physiological sign information; the main body fixing frame is an ear-hook type main body fixing frame, which is hung on the back of the wearer’s auricle and attaches the physiological sign sensor to the back of the wearer’s ear position; the physiological sign sensor includes: a photoelectric sensor (1), used to sense the wearer's pulse rate and oxygen saturation; a signal amplification module (4), which is electrically connected to the photoelectric sensor (1), and is used for sensing The received physiological sign information is amplified; the CPU microprocessor module (5), which is electrically connected with the photoelectric sensor (1) and the signal amplification module (4), controls the photoelectric sensor (1) to sense the physiological sign information and The sensed physiological sign information is input into the signal amplification module (4) for amplification, and receives the physiological sign information transmitted by the signal amplification module (4); the sending module (6), which is connected with the CPU microprocessor module (5) connected, under the control of the CPU microprocessor module (5), the sensed physiological sign information is sent out wirelessly or wiredly; the motion sensor (2) is arranged in the ear-hook type main body fixing frame (7) And be respectively connected with described signal amplifying module (4) and CPU microprocessor module (5), under the control of described CPU microprocessor module (5), sense the wearer's head movement parameter and amplify; Wherein , the CPU microprocessor module (5) also includes a motion compensation module, the motion compensation module receives the signal of the motion sensor (2), and selects an appropriate compensation method according to the characteristics of the motion signal sensed; when the motion sensor (2) When the motion parameter sensed is less than a threshold value A, no compensation is performed on the signal transmitted by the photoelectric sensor and the output value of the physiological sign detector is cached; when the motion parameter sensed by the motion sensor is greater than a When the threshold value A is smaller than another threshold value B at the same time, the signal transmitted by the photoelectric sensor (1) is compensated by the motion parameter, and the compensated signal value is used as the output of the physiological sign detector, and at the same time Buffering the output value of the physiological sign sensor; when the motion parameter sensed by the motion sensor (2) is greater than the threshold value B, the signal transmitted by the photoelectric sensor is not restored and the buffered output value is used as the physiological sign detection output value of the device.

According to the wearable physiological sign detector, the photoelectric sensor is at least composed of a pair of visible light/infrared light-emitting diodes and a phototransistor, to sense the physiological parameters located behind the wearer's ears to calculate the pulse rate and oxygen saturation. Sign information.

According to the wearable physiological sign detector, there are multiple groups of photoelectric sensors, and the multiple groups of photoelectric sensors are respectively installed on different parts of the ear-hook type main body fixing frame.

According to the wearable physiological sign detector, the physiological sign sensor also includes a temperature sensor, which is arranged in the ear-hook type main body fixing frame and is respectively connected with the CPU microprocessor module and the signal amplification module. The ambient or skin surface temperature is sensed and amplified under the control of the CPU microprocessor module.

According to the wearable physiological sign detector, the part where the photoelectric sensor is installed on the ear-hanging main body fixing frame is closely attached to the skin of the ear through a layer of transparent material.

According to the wearable physiological sign detector, the shape and size of the ear-hook type main body fixing frame can be elastically adjusted.

According to the wearable physiological sign detector, the ear-hook type body fixing frame is fixed on the spectacle frame.

According to the wearable physiological sign detector, the physiological sign sensor further includes an LCD display for displaying the sensed physiological sign information.

According to the wearable physiological sign detector, the physiological sign sensor further includes a speech synthesis module, and the speech synthesis module is used to convert the sensed physiological sign information into a voice signal and send it out through the sounding device.

According to the wearable physiological sign detector, the physiological sign sensor also includes a prompt module, and if the detected physiological sign is abnormal, the prompt module will remind the wearer through a sounding device, a light flashing device or a vibrating device .

According to the wearable physiological sign detector, the CPU microprocessor module of the physiological sign sensor further includes a power management module to optimize battery life and monitor battery voltage.

The present invention also provides a physiological sign telemetry and alarm system, including a wearable physiological sign detector; the wearable physiological sign detector is closely attached to the wearer's ear; the physiological sign telemetry and alarm system also includes: analysis The judging base station is wirelessly connected to the physiological sign sensor, which includes: a receiving module for receiving the sensed physiological sign information sent by the physiological sign sensor; a storage module for storing the sensed physiological sign information received by the receiving module The emergency event sending judgment module is used to analyze the sensed physiological sign information and judge the occurrence of an emergency event; the emergency event automatic sending module is used to automatically send a first aid signal wirelessly when an emergency event occurs, and send The sensed information; the emergency treatment device receives, analyzes and judges the emergency signal sent by the base station and the sensed information, and generates emergency countermeasures.

According to the physiological sign telemetry and alarm system, the wearable physiological sign detector also includes a temperature sensor, which is arranged in the ear-hook type main body fixing frame and is separated from the CPU microprocessor module and the signal amplification module connected, under the control of the CPU microprocessor module, the temperature of the environment or skin surface is sensed and amplified.

According to the physiological sign telemetry and alarm system, the emergency event automatic sending module is also used to manually send out a first aid signal when an emergency event occurs, and send the sensed information.

According to the physiological sign telemetry and alarm system, the analysis and judgment base station is a personal computer, which is wirelessly connected to the wearable physiological sign detector through an antenna.

According to the physiological sign telemetry and alarm system, the analysis determines that the base station is a network server.

According to the telemetry and alarm system for physiological signs, the emergency treatment device is a network server.

According to the physiological sign telemetry and alarm system, the sensed physiological sign information is the current physiological sign information and the historical record of the physiological sign before calling.

According to the physiological sign telemetry and alarm system, the physiological sign sensor also includes a communication receiving module, which receives digital, text or voice information from the analysis and judgment base station and the emergency treatment center and informs the wearer of the information in a corresponding manner.

According to the physiological sign telemetry and alarm system, the physiological sign sensor further includes a two-way voice communication module, and the two-way voice communication module is used for communication between the wearer and the emergency treatment device.

The present invention also provides a physiological sign telemetry and alarm method. The physiological sign telemetry and alarm system configured by implementing the method includes a physiological sign detector, an analysis and judgment base station, and an emergency treatment device. The physiological sign detector and the analysis and judgment base station are connected by wireless or Connected in a wired manner, and analyze and judge that the base stations are connected in a wired or wireless manner; the physiological sign telemetry and alarm method includes the following steps:

Step 1. The physiological sign information is sensed by the physiological sign detector worn behind the wearer's ear, and then the sensed physiological sign information is amplified, and then the sensed physiological sign information is sent wirelessly or wiredly To analyze and judge the base station;

Step 2. Analyze and judge that the base station receives the sensing information sent by the physiological sign detector, and then store the transmitted sensing information and analyze and judge whether there is an emergency event. If so, perform step 3. If not, Execute step 1;

Step 3. Based on the analysis and judgment, the base station automatically sends an emergency signal to the emergency treatment device in a wireless manner, and sends the sensed physiological sign information.

Step 4: The emergency processing device receives, analyzes and judges the emergency signal sent by the base station and the sensed physiological sign information, and generates an emergency countermeasure.

According to the physiological sign telemetry and alarm method, the physiological sign information sensed by the physiological sign detector in step 1 includes pulse rate and oxygen saturation, head movement parameters and/or body temperature and ambient temperature of the subject.

According to the physiological sign telemetry and alarm method, if the sensed physiological sign information includes head movement parameters, then step 2 further includes performing motion artifacts on the sensed physiological sign information according to the head movement parameters Compensation step.

According to the physiological sign telemetry and alarm method, the step of compensating the sensed physiological sign information for motion artifacts according to the head motion parameters specifically includes: comparing the motion parameters sensed by the motion sensor with the preset The threshold value is compared, and an appropriate compensation method is selected according to the characteristics of the sensed motion signal; that is, when the motion parameter sensed by the motion sensor is less than a threshold value A, no processing is performed on the signal transmitted by the photoelectric sensor. The output value of the physiological sign detector is compensated and buffered. When the motion parameter sensed by the motion sensor is greater than a threshold value A and at the same time smaller than another threshold value B, the signal transmitted by the photoelectric sensor is compensated by the motion parameter, and the compensated signal value is used as The output of the physiological sign sensor and the output value of the wearable physiological sign detector are buffered at the same time. When the motion parameter sensed by the motion sensor is greater than the threshold value B, it is considered that the signal transmitted by the photoelectric sensor is difficult to recover and the The cached output value is used as the output value of the physiological sign detector.

From the above technical solutions, we can see that the wearable physiological sign detector of the present invention has the following advantages:

1) When the wearer wears it, the sensing point is located behind the ear, and the sensor is completely fixed behind the ear, which exerts gentle pressure on the ear, which improves the wearing comfort of the wearer, and compared with other methods, the movement pseudo The shadow is small; since the sensor is hidden behind the ear, it does not affect the appearance.

2) The physiological sign sensor includes a motion sensor to simultaneously monitor the wearer's head motion parameters. That is, the abnormal movement posture such as falling can be found; and the head movement parameters and the pulse signal are correlated to compensate the movement artifacts, and provide comprehensive and accurate information for discovering the wearer's emergency abnormal situation.

3) The user sensor also includes a temperature sensor for sensing the temperature of the skin surface and the ambient temperature.

The present invention also provides a physiological sign telemetry and alarm method based on the wearable physiological sign detector system. The optimization of the power supply, the warning of low power supply voltage, the detection and notification of abnormal physiological signs, and the communication between the wearer and the emergency treatment center are fully considered.

The physiological sign telemetry and alarm system and method of the present invention monitor the physiological signs of the elderly and people who have lost their ability to live alone at home. It is added to the current existing "safety bell" system, and when the wearer is sometimes found to have abnormal physiology In the case of physical signs, especially when the situation is very urgent, and the wearer has no time or ability to press the button to initiate an emergency call to the server, the telemetry and alarm system for physiological signs of the present invention can automatically initiate an emergency call to the server, which is helpful for the elderly People increase security.

In addition, when the wearer manually activates or the physiological sign telemetry and alarm system automatically activates the drive monitoring system to the server, the watchman can instantly monitor the wearer's current physiological sign signal and instantly view his/her physiological sign before calling history record.

Description of drawings

Fig. 1 is the circuit diagram of the physiological sign detector of the embodiment of the present invention;

Fig. 2 (a) is a block diagram showing the method flow of the wearable physiological sign detector according to the embodiment of the present invention;

Fig. 2 (b) is the PIC single-chip microcomputer software program flowchart showing the wearable physiological sign detector of the embodiment of the present invention;

Fig. 3(a) shows the structure of a pair of light-emitting diodes, photodiodes and ear-hook type main body fixing frame in the wearable physiological sign detector of the embodiment of the present invention, and the earphone has been removed at this time;

Fig. 3(b) is an overall enlarged view of the ear-hung type main body fixing frame, sensor, circuit board and battery of the wearable physiological sign detector according to the embodiment of the present invention;

Fig. 4 is the pulse signal waveform recorded when the body is stationary of the physiological sign detector of the embodiment of the present invention;

Fig. 5 (a) is the distortion of the pulse signal waveform recorded by the physiological sign detector of the embodiment of the present invention due to the slight beating of the wearer;

5(b) and 5(c) are motion signals sensed by the physiological sign detector of the embodiment of the present invention through the two-channel accelerometer;

Fig. 6 is the structure of the physiological sign telemetry and alarm system of the embodiment of the present invention;

Fig. 7 is a flowchart showing the PC software program in the wearable physiological sign telemetry and alarm system according to the embodiment of the present invention.

Wherein, the reference signs are explained as follows:

1 photoelectric sensor

2 motion sensors

3 temperature sensor

4 Signal Amplification Module

5CPU microprocessor

6 sending module

7 Ear-hook body mount

8 antennas

Detailed ways

Please refer to Fig. 1 and Fig. 2 (a), Fig. 1 is the circuit diagram of the physiological sign detector of the embodiment of the present invention; Fig. 2 (a) is the block diagram showing the method flow of the wearable physiological sign detector of the embodiment of the present invention; From As can be seen from the above figure, the wearable physiological sign detector can specifically include: a signal photoelectric sensor 1 for sensing pulse rate and oxygen saturation level, a motion sensor 2 for sensing the wearer's head movement and The temperature sensor 3 that is used to sense environment or skin surface temperature, these sensors are arranged in the ear-hook type main body fixing frame 7, and its sensing point is positioned at wearer's ear position; , the motion sensor 2 is electrically connected with the temperature sensor 3, receives the physiological sign information transmitted by the above-mentioned sensors and performs amplification processing; the CPU microprocessor 5, which is connected with the photoelectric sensor 1, the motion sensor 2, the temperature sensor 3 and the signal amplification module 4 are electrically connected respectively, which controls the above-mentioned sensors to sense the physiological sign information and input the sensed physiological sign information into the signal amplification module 4 for amplification, and receive the physiological sign information transmitted by the signal amplification module 4; the sending module 6. It is connected to the CPU microprocessor 5, and under the control of the CPU microprocessor 5, the sensed physiological sign information is sent out through the antenna.

Please refer to Fig. 2 (b), Fig. 2 (b) is a PIC microcontroller software program flow chart showing the wearable physiological sign detector of the embodiment of the present invention; Transistor, senses the PPG signal through 1 or 2 channels in reflective mode, that is both light transmitting and receiving sensors are located behind the ear. For pulse monitoring only, a pair of light-emitting diodes (LEDs) and phototransistors with visible or infrared light can be used. When monitoring blood oxygen saturation, a pair of LEDs and phototransistors of different wavelengths (one red and the other infrared) monitor the PPG signal through two channels. Light of different wavelengths can also share a phototransistor for reception. The calculation method of blood oxygen saturation is very mature, so I won’t repeat it here.

Please refer to Fig. 3(a) and Fig. 3(b), Fig. 3(a) shows the structure of a pair of light-emitting diodes, photodiodes and ear-hung type main body fixing frame in the wearable physiological sign detector of the embodiment of the present invention , the earphone has been removed at this time; FIG. 3(b) is an overall enlarged view of the ear-hook main body fixing frame, sensor probe, circuit board and battery of the wearable physiological sign detector according to the embodiment of the present invention.

As shown in Fig. 3(a) and Fig. 3(b), the ear-hook type main body fixing frame 7 is elastic, so that when worn on the auricle, a small force will be applied to the skin at the position of the photoelectric sensor 1 , so that the photoelectric sensor 1 is in close contact with the skin. The shape and size of the ear-hook type main body fixing frame 7 can be adjusted within a certain range, so as to be suitable for ears of different shapes and sizes. The ear-hook type main body fixing frame 7 can also be fixed on the spectacle frame.

The photoelectric sensor 1 can be installed in different positions on the ear-hook type main body fixing frame 7: such as close to the top of the auricle, the rear of the earlobe, the middle of the auricle, and other parts of the auricle. The photoelectric sensor 1 is closely attached to the skin of the ear. The photoelectric sensor 1 is closely attached to the skin of the ear through a layer of transparent material. The transparent substance is generally silica gel or other similar materials.

The photoelectric sensor 1 can also have several pairs of visible light/infrared light-emitting diodes and phototransistors installed in different positions of the ear-hook type main body fixing frame 7, so that the CPU microprocessor module 5 automatically selects the pair with the strongest signal. The photoelectric sensor 1 can also have several visible light/infrared light-emitting diodes and a phototransistor installed on the same position of the ear-hook type main body fixing frame 7, so that the CPU microprocessor module 5 can automatically select how many and which visible light need to be lit. / infrared light-emitting diodes to achieve a strong signal while consuming less power. Several visible light/infrared light emitting diodes can be arranged in a specific shape, such as ring, straight line, arc and so on.

Based on the basic configuration of the above-mentioned wearable physiological sign detector, a motion sensor is integrated and added, and the motion sensor is selected from one of the following sets: accelerometer, gyroscope, angular accelerometer and optical motion sensor; it is set on the ear-hook The main body fixed frame 7 is connected with the CPU microprocessor 5 for sensing the head movement parameters of the wearer. Combined with the sensing of motion parameters and pulse rate, it is very effective in alerting the wearer of a sudden fall. After the large vibration of the fall, the pulse rate will increase abnormally. The two signals are correlated and monitored to improve confidence. The multiple functions of this motion sensor are as follows:

1) It is used to sense the activity of the wearer so as to monitor the actual physical state of the wearer;

2) Motion sensors such as accelerometers can sense gravity and provide head posture information to roughly estimate whether the wearer is standing or lying down;

3) The motion sensor can sense the wearer's sudden fall. In this case, the motion sensor can provide us with a large acceleration;

4) The motion parameters can be used to compensate for the interference of motion artifacts of the PPG signal.

In this case, the CPU microprocessor module 5 also includes a motion compensation module, which receives the signal of the motion sensor 2 and selects an appropriate compensation method according to the characteristics of the sensed motion signal. When the motion parameter sensed by the motion sensor 2 is smaller than a threshold value A, no compensation is performed on the signal transmitted from the photoelectric sensor 1 and the output value of the physiological sign detector is buffered. When the motion parameter sensed by the motion sensor 2 is greater than a threshold value A and at the same time smaller than another threshold value B, the signal transmitted by the photoelectric sensor 1 is compensated by the motion parameter, and the compensated signal value as the output of the physiological sign sensor, while buffering the output value of the wearable physiological sign detector, when the motion parameter sensed by the motion sensor 2 is greater than the threshold value B, it is considered that the signal transmitted by the photoelectric sensor 1 is already difficult Restore and use the cached output value as the output value of the physiological sign detector.

The motion parameter can be used to compensate the motion artifact of the PPG signal. For details, refer to the invention application titled a portable health monitoring device capable of motion compensation and its compensation method filed by the inventor on August 5, 2004.

In addition, the wearable physiological sign detector further includes a temperature sensor 3, which is arranged in the ear-hook type main body fixing frame 7 and connected with the CPU microprocessor 5, which is used for sensing the temperature of the environment or the skin surface, for Sensing the temperature of the environment or the skin surface, and the correlation of the parameters between the pulse rate and the temperature of the environment or the skin surface of the body can provide a more comprehensive monitoring for the wearer.

When the wearer wears the ear-hook type main body fixing frame 7, the sensing point is located behind the ear, and the sensor is hidden behind the auricle. Also because the fixed part of the sensor is on the top of the auricle and behind the ear, and it exerts gentle pressure on the earlobe, which increases the wearing comfort. Compared with other methods, such as detecting the wrist or fingers, since the movement of the head is smaller than that of the wrist, the resulting motion artifacts are relatively small, and the motion parameters are correlated with the pulse signal, skin surface and ambient temperature In order to compensate for motion artifacts and provide comprehensive information to discover anomalies in the use of objects.

The physiological sign sensor also includes an LCD display for displaying any one or several physiological sign information in the sensed pulse rate, blood oxygen saturation, motion amplitude and temperature.

The CPU microprocessor module of the physiological sign sensor also includes a voice synthesis module to convert any one or several physiological sign information in the sensed pulse rate, blood oxygen saturation, motion amplitude and temperature into a voice signal, and pass The sound-generating device allows the wearer to hear. The sounding device may be any one of a micro-speaker installed in the ear-hook type main body fixing frame, a micro-speaker installed in the physiological sign sensor, or an earphone integrated with the ear-hook type main body fixing frame.

The CPU microprocessor module of the physiological sign sensor also includes an alarm prompt module. If it is detected that the physiological signs are abnormal, the alarm prompt module will remind the wearer through a sounding device, a light flashing device or a vibrating device.

The CPU microprocessor module of the physiological sign sensor also includes a power management module to optimize battery life and monitor the battery voltage. The power management module can control the signal-driven amplification module, CPU microprocessor module, and sending The module and other related modules work in switch mode, that is, work for a period of time and pause for a period of time to prolong the working life of the battery. When necessary, such as detecting an abnormal situation, the power management module can control all or some modules to enter a continuous working state to Improve the reliability of measurement. In addition, the power management module can control the signal drive amplitude of the photoelectric sensor and the signal amplification multiple to achieve a compromise between signal quality and power consumption. The power management module can also monitor the battery voltage. If the battery voltage is found to be lower than the normal working voltage, the wearer will be reminded by a sound device, a flash device or a vibration device, and this information can also be sent out through the sending module.

All the modules of the physiological sign sensor are integrated with the ear-hook type main body fixing frame. The LCD display or sounding device of the physiological sign sensor used to inform the physiological sign information can be shared with the existing LCD display or sounding device in the portable electronic product.

The above-mentioned wearable physiological sign detector is applied to the front end of the physiological sign telemetry and alarm system, and is used for automatically or manually sending out emergency signals and sending the sensed information when an emergency occurs. Please refer to Fig. 6 and Fig. 7, Fig. 6 is the structure of the physiological sign telemetry and the warning system of the embodiment of the present invention; Fig. 7 shows the PC software program flow chart in the wearable physiological sign telemetry and the warning system of the embodiment of the present invention; As shown in the figure, the physiological sign telemetry and alarm system includes a physiological sign detector, an analysis and judgment base station, and an emergency treatment device, and the physiological sign detector and the analysis and judgment base station transmit the sensed physiological sign information wirelessly or wiredly; Analyzing and judging that the base station is connected to the physiological sign detector through wireless or wired connection, which includes a receiving module for receiving the sensed physiological sign information sent by the physiological sign detector, and for storing the sensed physiological sign information received by the receiving module storage module, an emergency event sending judging module for analyzing the sensed physiological sign information and judging the occurrence of an emergency event, and an emergency event sending out emergency signal and sending the sensed emergency signal automatically by wireless or wired means when an emergency event occurs An emergency automatic sending module of physiological sign information. Analyze and judge that the base station automatically or manually sends an emergency signal to the emergency treatment device wirelessly when an emergency occurs, and sends the sensed physiological sign information; the sensed physiological sign information is the current physiological sign information and the pre-call physiological sign information history record. The emergency processing device receives, analyzes and judges the emergency signal sent by the base station and the sensed information, and generates emergency countermeasures.

The information of the physiological signs sensed by the wearable physiological sign detector is transmitted to the analysis and judgment base station. It is analyzed and judged that the base station may be a personal computer or a specific device for this purpose, and the emergency treatment center is a web server (Web server). It can transmit the physiological sign parameters or/and physiological sign signals transmitted by the wearable physiological sign detector to authorized Internet or intranet users through the Internet or the intranet. In this embodiment, the analysis and judgment base station is a personal computer and analysis and judgment application software. The analysis and judgment application software is as shown in Figure 7. The application software completes reading data from the PC serial port, storing and updating data, calculating instant heart rate, and calculating average heart rate. , Send pulse sound, display heart rate data, draw real-time dynamic wave curves of pulse wave and acceleration wave, etc. When the software judges that an emergency has occurred, the modem (modem) passes through a wireless or wired communication network (such as wired telephone, GSM, CDMA or 3G mobile phone, wired Internet network, WiFi or WiMAX wireless network or other similar networks) ) automatically send a distress signal and sensed physiological sign information to the emergency treatment center or emergency center, the sensed physiological sign information is the current physiological sign information and the history record of the physiological sign before calling. When the wearer goes outdoors, the wearable sensor monitors the wearer's motion parameters, pulse signal, skin surface and ambient temperature and other parameters, and the detected physiological sign information can also be sent to the wearer's home through the wireless communication network. Analyze and judge the base station or emergency treatment center.

The PPG signal is processed by the microprocessor of the wearable physiological sign device or analyzed and judged by the base station. Abnormal conditions can be detected by sensing the wearer's pulse rate and blood oxygen saturation. Please refer to Figure 4, Figure 5(a) and Figure 5( b) and 5(c), Fig. 4 is the pulse signal waveform recorded when the body is still of the physiological sign detector of the embodiment of the present invention; Fig. 5 (a) is the physiological sign detector of the embodiment of the present invention The distortion of the pulse signal waveform recorded by beating; Fig. 5 (b) and 5 (c) are the motion signals sensed by the physiological sign detector of the embodiment of the present invention through the two-channel accelerometer. At a critical moment, analyze and judge that the base station receives The abnormal physiological signs of the wearer will immediately send different alarm signals to all the caregivers of the wearer. In an emergency, the wearer can also press the special button on the sensor to send a help signal. Alarming by a family member in another room, by phone to security personnel in the wearer's immediate neighbors or apartment, and of course by phone to the wearer's caregiver. The appropriate first aid is then administered to the emergency action.

The vital signs sensor also includes a two-way voice communication module. After the wearer manually sends out the emergency signal or receives digital, text or voice information from the analysis and judgment base station and the emergency treatment center, the wearer can communicate with the service personnel of the emergency treatment center through the two-way voice communication module. At the same time, the physiological sign sensor also includes a communication receiving module responsible for receiving digital, text or voice information from the analysis and judgment base station and emergency treatment center and notifying the wearer of these information in a corresponding manner. The number, text or voice information may be related to abnormal physiological signs, battery replacement reminders, or other related service information.

Therefore, a kind of telemetry of physiological sign and warning method of the present invention, the telemetry of physiological sign that implements its method configuration and warning system include physiological sign detector, analysis and judgment base station and emergency treatment device, between physiological sign detector and analysis and judgment base station through wireless Or connected in a wired way, analyze and judge that the base station is connected in a wired or wireless way; the physiological sign telemetry and alarm method includes the following steps:

Step 1. The physiological sign information is sensed by the physiological sign detector worn behind the wearer's ear, and then the sensed physiological sign information is amplified, and then the sensed physiological sign information is sent wirelessly or wiredly To analyze and judge the base station;

Step 2. Analyze and judge that the base station receives the sensing information sent by the physiological sign detector, and then store the transmitted sensing information and analyze and judge whether there is an emergency event. If so, perform step 3. If not, Execute step 1;

Step 3. Based on the analysis and judgment, the base station automatically sends an emergency signal to the emergency treatment device in a wireless manner, and sends the sensed physiological sign information.

Step 4: The emergency processing device receives, analyzes and judges the emergency signal sent by the base station and the sensed physiological sign information, and generates an emergency countermeasure.

The physiological sign information sensed by the physiological sign detector in step 1 includes the pulse rate and oxygen saturation of the subject, head movement parameters and/or body temperature and ambient temperature. If the sensed physiological sign information includes head motion parameters, step 2 further includes a step of compensating for motion artifacts on the sensed physiological sign information according to the head motion parameters. The compensation step specifically includes: comparing the motion parameter sensed by the motion sensor with a preset threshold value, and selecting an appropriate compensation method according to the characteristics of the sensed motion signal; When the parameter is less than a threshold value A, no compensation is performed on the signal transmitted by the photoelectric sensor and the output value of the physiological sign detector is buffered. When the motion parameter sensed by the motion sensor is greater than a threshold value A and at the same time smaller than another threshold value B, the signal transmitted by the photoelectric sensor is compensated by the motion parameter, and the compensated signal value is used as The output of the physiological sign sensor and the output value of the wearable physiological sign detector are buffered at the same time. When the motion parameter sensed by the motion sensor is greater than the threshold value B, it is considered that the signal transmitted by the photoelectric sensor is difficult to recover and the The cached output value is used as the output value of the physiological sign detector.

The present invention expects to monitor the physiological signs of elderly people who are alone at home and people who have lost the ability to live. The wearable physiological sign detector disclosed by the present invention wears motion sensors, temperature sensors and photosensitive sensors together behind the ears. When abnormal When the situation is very urgent, if the wearer does not have the ability and time to call the emergency treatment device by himself, the call can be made automatically. This invention can also be used by people engaged in high-risk work , such as firefighters and policemen who perform work. In this case, the wearable physiological sign detector disclosed by the present invention can be combined with wireless walkie-talkies used by firefighters and policemen. In addition, this invention can also be used for any People who need it can detect the parameters of physiological signs when doing outdoor sports. Athletes can use the revealed wearable physiological sign detector to better detect the parameters of various physiological signs during training so as to achieve better training results. Even ordinary people can The disclosed wearable physiological sign detector can be used to record and detect a day's physiological sign parameters and exercise volume in order to maintain a better physical condition.

In addition, when the wearer manually activates or automatically drives the emergency treatment device, the watchman can immediately monitor the wearer's current physiological sign signal and immediately check the history of his/her physiological sign before calling. The battery pack of the wearable physiological sign detector can be placed on the neck of the wearer, and can be relatively larger compared with sensors placed on fingers or wrists, so the wearable physiological sign detector has a longer working life.

The above are only preferred embodiments of the present invention, and are not intended to limit the implementation scope of the present invention; that is, all equivalent changes and modifications made according to the patent scope of the present invention are covered by the patent scope of the present invention.

Claims (20)

1. A wearable physiological sign detector, which is applied to the front end of the physiological sign telemetry and alarm system, the wearable physiological sign detector includes a physiological sign sensor and a main body fixing frame, and the physiological sign sensor is arranged in the main body fixing frame for use in Sensing the wearer's physiological sign information; it is characterized in that the main body fixing frame is an ear-hook type main body fixing frame (7), which is hung on the back of the wearer's auricle and attaches the physiological sign sensor to the wearer Behind the ear; the physiological sign sensor includes: A photoelectric sensor (1) for sensing the wearer's pulse rate and oxygen saturation; A signal amplification module (4), which is electrically connected to the photoelectric sensor (1), and amplifies the sensed physiological sign information; The CPU microprocessor module (5), which is electrically connected to the photoelectric sensor (1) and the signal amplification module (4), controls the photoelectric sensor (1) to sense physiological sign information and input the sensed physiological sign information Amplify in the signal amplification module (4), and receive the physiological sign information transmitted by the signal amplification module (4); The sending module (6), which is connected to the CPU microprocessor module (5), sends out the sensed physiological sign information by wireless or wired mode under the control of the CPU microprocessor module (5); Motion sensor (2), is arranged in described ear-hung type main body fixing frame (7) and is connected with described signal amplifying module (4) and CPU microprocessor module (5) respectively, in described CPU microprocessor module (5) Sensing and amplifying the wearer's head movement parameters under the control; Wherein, the CPU microprocessor module (5) also includes a motion compensation module, which receives the signal of the motion sensor (2), and selects an appropriate compensation method according to the characteristics of the sensed motion signal; when the motion When the motion parameter sensed by the sensor (2) is less than a threshold value A, no compensation is performed on the signal transmitted by the photoelectric sensor and the output value of the physiological sign detector is buffered; when the motion parameter sensed by the motion sensor is greater than When a threshold value A is smaller than another threshold value B at the same time, the signal transmitted by the photoelectric sensor (1) is compensated by the motion parameter, and the compensated signal value is used as the output of the physiological sign detector, At the same time, the output value of the physiological sign sensor is buffered; when the motion parameter sensed by the motion sensor (2) is greater than the threshold value B, the signal transmitted by the photoelectric sensor is not restored and the output value of the buffer is used as the physiological sign The output value of the detector. 2. The wearable physiological sign detector according to claim 1, wherein the photoelectric sensor (1) is at least composed of a pair of visible light/infrared light-emitting diodes and a phototransistor to sense the The location behind the ear calculates physiological information for pulse rate and oxygen saturation. 3. The wearable physiological sign detector according to claim 1, characterized in that there are multiple groups of photoelectric sensors (1), and the multiple groups of photoelectric sensors (1) are respectively installed on the ear-hook main body different parts of the mount. 4. The wearable physiological sign detector according to claim 2 or 3, characterized in that, the physiological sign sensor also includes a temperature sensor (3), which is arranged in the ear-hook type main body fixing frame (7) and It is respectively connected with the CPU microprocessor module (5) and the signal amplification module (4), and under the control of the CPU microprocessor module (5), senses and amplifies the temperature of the environment or the skin surface. 5. The wearable physiological sign detector according to claim 1, characterized in that, the part where the photoelectric sensor (1) is installed on the ear-hook type main body fixing frame (7) is connected to the ear through a layer of transparent material. Skin tight. 6. The wearable physiological sign detector according to claim 1, characterized in that the shape and size of the ear-hook type main body fixing frame (7) can be elastically adjusted. 7. The wearable physiological sign detector according to claim 1, characterized in that, the ear-hook type main body fixing frame (7) is fixed on the spectacle frame. 8. The wearable physiological sign detector according to claim 1, wherein the physiological sign sensor further comprises an LCD display for displaying the sensed physiological sign information. 9. The wearable physiological sign detector according to claim 1, wherein the physiological sign sensor further comprises a speech synthesis module, which is used to convert the sensed physiological sign information into a voice signal and Sent by a sound generator. 10. The wearable physiological sign detector according to claim 1, wherein the physiological sign sensor further includes a prompting module, and if the physiological sign is detected to be abnormal, the prompting module will pass a sounding device, a light Flashing device or vibration device to remind the wearer. 11. The wearable physiological sign detector according to claim 1, wherein the CPU microprocessor module of the physiological sign sensor further includes a power management module to optimize battery life and monitor battery voltage. 12. A physiological sign telemetry and alarm system, comprising the wearable physiological sign detector according to claim 1; it is characterized in that the physiological sign telemetry and alarm system also includes: The analysis and judgment base station is wirelessly connected with the physiological sign sensor, which includes: A receiving module, configured to receive the sensed physiological sign information sent by the physiological sign sensor; a storage module, configured to store the sensed physiological sign information received by the receiving module; An emergency event sending judgment module is used to analyze the sensed physiological sign information and judge the occurrence of an emergency event; The emergency automatic sending module is used to automatically send emergency signals wirelessly and send the sensed information when an emergency occurs; The emergency processing device receives, analyzes and judges the emergency signal sent by the base station and the sensed information, and generates emergency countermeasures. 13. The physiological sign telemetry and alarm system according to claim 12, characterized in that, the wearable physiological sign detector also includes a temperature sensor (3), which is arranged on the ear-hook type main body fixing frame (7) It is inside and connected with the CPU microprocessor module (5) and the signal amplification module (4) respectively, and senses the temperature of the environment or the skin surface under the control of the CPU microprocessor module (5) and amplifies it. 14. The physiological sign telemetry and alarm system according to claim 12, characterized in that, the emergency event automatic sending module is also used to manually send out a first aid signal and send the sensed information when an emergency event occurs. 15. The physiological sign telemetry and alarm system according to claim 12, characterized in that, the analysis and judgment base station is a personal computer, which communicates with the wearable physiological sign detector in a wireless manner through an antenna (8). connected. 16. The physiological sign telemetry and alarm system according to claim 12, characterized in that, the analysis and judgment base station is a network server. 17. The physiological sign telemetry and alarm system according to claim 12, wherein the emergency treatment device is a network server. 18. The physiological sign telemetry and alarm system according to claim 12, characterized in that, the sensed physiological sign information is current physiological sign information and historical records of physiological sign before calling. 19. The physiological sign telemetry and alarm system according to claim 12, characterized in that, the physiological sign sensor also includes a communication receiving module, which receives digital, text or voice information from the analysis and judgment base station and emergency treatment center and sends This information is communicated to the wearer in a corresponding manner. 20. The physiological sign telemetry and alarm system according to claim 12, wherein the physiological sign sensor further comprises a two-way voice communication module, and the two-way voice communication module is used for communication between the wearer and the emergency treatment device.

Images