NB-IoT (Narrow Band Internet of Things)-based elderly health and safety monitoring system

Abstract

The utility model discloses an old people health and safety monitoring system based on NB-IoT. The old people health and safety monitoring system comprises a data transmission end and a data monitoring and processing end connected with the data transmission end. The data transmitting end comprises a BC-26NB-IoT wireless communication module, a cloud server and a terminal, monitored data are uploaded to the cloud server through the BC-26NB-IoT wireless communication module, and then the data are sent to the terminal through the cloud server; and the data monitoring and processing end comprises a sensor module and a main control module, is used for sending monitored data to the main control module for processing, and has the advantages of long-distance, stable and real-time information sending and capability of accurately and timely capturing the monitoring data of the old people under any condition. Meanwhile, the system has the technical characteristics of intelligent early warning and alarming functions and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to an old person health safety monitoring system, more specifically, an old person health safety monitoring system based on NB -IoT belongs to the technical field of internet of things. BACKGROUND

[0002] Old people face sudden emergency situations in daily life, such as hypertension, heart attack, fall, etc., which not only threaten their physical health, but also often cause more serious consequences due to delayed rescue. These emergencies often come unexpectedly, requiring quick and effective response measures. However, with the acceleration of the aging process of society, the number of elderly people living alone and those whose friends and relatives are not always nearby is growing, and their safety issues are becoming increasingly prominent, and the demand for timely and reliable elderly services is also increasing.

[0003] Although there are some technical products for old people safety monitoring on the market, they still have many limitations in practical application. Most existing products use wired transmission of old people's monitoring data, which, although ensures data stability to some extent, undoubtedly increases the inconvenience of old people's life and limits their activity range. At the same time, the maintenance and inspection of the line is a tedious work, which brings additional burden to the old people and their families.

[0004] In addition, although some products use Bluetooth and other short-range wireless communication methods to transmit data, they still have limited communication and monitoring distance, which means that when an emergency occurs in a remote place in the home, the monitoring system may not be able to capture the signal in time, thus delaying the rescue opportunity. In addition, short-range wireless communication methods are also susceptible to environmental factors, such as the blocking of obstacles such as walls and furniture, which can affect the quality of signal transmission.

[0005] In view of these shortcomings, the market urgently needs a more advanced and reliable old people safety monitoring technology. This technology should have long-distance, stable, real-time information transmission, and be able to ensure accurate and timely capture of old people's monitoring data in any situation. At the same time, it should also have intelligent early warning and alarm functions, and be able to automatically trigger the alarm mechanism when an emergency occurs, notifying family members or medical institutions for rescue. CONTENT OF THE UTILITY MODEL

[0006] In order to solve the above-mentioned problems of the prior art, the utility model provides an old people health safety monitoring system based on NB -IoT, which has the technical characteristics of long-distance, stable, real-time information transmission, and can ensure accurate and timely capture of old people's monitoring data in any situation. At the same time, it should also have intelligent early warning and alarm functions.

[0007] In order to achieve the above object, the utility model is through the following technical schemes:

[0008] The utility model discloses a kind of old health safety monitoring systems based on NB-IoT, including data transfer end and the data monitoring and processing end connected with data transfer end;

[0009] The data transfer end includes BC-26NB-IoT wireless communication module, cloud server and terminal, and the data monitored is uploaded to cloud server by BC-26NB-IoT wireless communication module, and then data is sent to terminal by cloud server;

[0010] The data monitoring and processing end includes sensor module, main control module, to send the data monitored to main control module and process.

[0011] Preferably, the sensor module includes communication connection's MQ-135 harmful gas sensor module, MAX30102 heart rate blood oxygen sensor module, DS18B20 temperature sensor module, MPU60506 axis attitude sensor module, the Q-135 harmful gas sensor module, MAX30102 heart rate blood oxygen sensor module, DS18B20 temperature sensor module, MPU60506 axis attitude sensor module are connected with main control module, to realize respectively obtaining whether the environment where old person is located exists harmful gas, old person's heart rate blood oxygen, temperature and posture;The main control module includes STM32F103ZET6 microcontroller.

[0012] Preferably, the main control module is connected with 32.768K crystal oscillator circuit, to provide the clock required for main control module operation.

[0013] Preferably, the main control module is connected with a loudspeaker driven by S8050 triode, to monitor and send out the alarm of old person's environment existence harmful gas, fall and heart rate blood oxygen, temperature data anomaly.

[0014] Preferably, the main control module is connected with a program download circuit, to burn code into main control module.

[0015] Preferably, BC-26NB-IoT wireless communication module is high-performance, low-power, multi-band LTE CatNB1 / CatNB2 wireless communication module, which is connected with main control module through serial communication.

[0016] Preferably, the data transfer end is also connected with mobile control terminal.

[0017] Preferably, the mobile control terminal is any one of mobile phone and computer.

[0018] The VDD end and the GND end in the DS18B20 temperature sensor are connected to 3.3V and ground respectively, the DQ end in the DS18B20 temperature sensor exchanges data with the master module, and a 10K pull-up resistor is connected between the DQ end and the VDD end.

[0019] The MAX30102 heart rate and blood oxygen sensor module integrates an infrared LED, a red light LED and a photodetector, the skin is irradiated by the infrared LED and the red light LED, then the photodetector collects reflected light signals, and then the blood oxygen saturation and heart rate are calculated, and the master module communicates with the MAX30102 heart rate and blood oxygen sensor module by using an I2C protocol.

[0020] The analog output of the MQ-135 air quality sensor module AO is connected to the master module.

[0021] Preferably, the master module communicates with the 6-axis attitude sensor module of the MPU6050 by using an I2C protocol.

[0022] The RXD pin and the TXD pin of the BC-26 NB-IoT wireless communication module are connected to the TXD pin and the RXD pin of the master module respectively, when data is sent to the master module for processing by the data monitoring and processing end, the master module controls the BC-26 NB-IoT wireless communication module to upload data to the cloud server, and the mobile control terminal obtains data from the cloud server to realize remote monitoring of the real-time situation of the old people.

[0023] Beneficial effects: safe and reliable, long-distance, stable, real-time information transmission, can ensure that the monitoring data of the old people can be accurately and timely captured under any circumstances. At the same time, it should also have intelligent early warning and alarm functions, and can automatically trigger the alarm mechanism when the old people have an emergency, and notify the family members or medical institutions for rescue. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the overall structure diagram of the utility model.

[0025] Figure 2 It is the schematic diagram of the connection circuit of the STM32F103ZET6 microcontroller of the utility model.

[0026] Figure 3 It is the schematic diagram of the DS18B20 temperature sensor module circuit of the utility model.

[0027] Figure 4 It is the schematic diagram of the MAX30102 heart rate and blood oxygen sensor module circuit of the utility model.

[0028] Figure 5It is a schematic view of the MQ-135 harmful gas sensor module circuit of the utility model.

[0029] Figure 6 It is a schematic view of the MPU60506 axis attitude sensor module circuit of the utility model.

[0030] Figure 7 It is a schematic view of the NB-IoT BC-26 wireless communication module circuit of the utility model. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0032] The utility model is specially developed for the needs of timely discovery and notification to relatives of the sudden conditions of the old people, and combines long-distance wireless transmission technology, sensor technology and attitude detection, so that children and relatives can monitor the environmental conditions, physical conditions and attitudes of the old people remotely in different places, and the health and safety of the old people are provided with protection.

[0033] As Figures 1-7 The specific embodiment of the old people health and safety monitoring system based on NB-IoT is shown, and the old people health and safety monitoring system based on NB-IoT comprises a data transmission end and a data monitoring and processing end connected with the data transmission end. The data transmission end comprises a BC-26 NB-IoT wireless communication module, a cloud server and a terminal, data monitored is uploaded to the cloud server through the BC-26 NB-IoT wireless communication module, and then the cloud server sends the data to the terminal. The data monitoring and processing end comprises a sensor module and a main control module, and is used for sending the monitored data to the main control module for processing.

[0034] The specific embodiment of the old people health and safety monitoring system based on NB-IoT (narrowband Internet of Things) aims at realizing comprehensive, real-time and remote monitoring of the health state of the old people through advanced Internet of Things technology, so as to effectively improve the life safety and health management level of the old people living alone or not often with relatives.

[0035] 1. Data transmission end:

[0036] BC-26 NB-IoT wireless communication module (referred to as BC-26 module): As the core communication component of the system, the BC-26 module has the characteristics of low power consumption, wide coverage, and large connection, which is very suitable for the application scenario of old people health monitoring which needs long-term stable operation and small amount of data transmission. It can directly send monitoring data to the cloud server through the NB-IoT network without relying on WiFi or Bluetooth short-distance communication technology, greatly expanding the monitoring range.

[0037] Cloud server: As the center of data storage and forwarding, the cloud server receives data from the BC-26 module and performs preliminary processing (such as data cleaning, format conversion, etc.). At the same time, the cloud server also undertakes the important responsibility of data security management, using encryption transmission and storage technology to ensure the security and privacy protection of old people's health data.

[0038] Terminal: It can be a smart phone, tablet computer or PC, etc. User equipment, by installing a dedicated APP or client software, users can view the health data of the old people at any time, receive alarm information, and even perform remote control or emergency call.

[0039] 2. Data monitoring and processing end:

[0040] Sensor module: Including heart rate sensor, blood pressure sensor, motion sensor (such as accelerometer), environmental sensor (such as temperature and humidity, air quality), etc. These sensors closely fit the daily life of the old people, and real-time collect various physiological parameters and environmental data.

[0041] Master module: Usually using low-power microcontroller (MCU), responsible for receiving data from sensor module, performing preliminary data processing (such as filtering, outlier detection) and format conversion, and then sending data to cloud server through BC-26 module. The master module is also responsible for controlling the operation of the whole system, including the working mode of the sensor, the data sampling frequency, etc.

[0042] Functional features include:

[0043] Real-time monitoring and early warning: The system can monitor the physiological indicators of the old people in real time, and once an abnormality is found (such as rapid heart rate, high blood pressure, long time inactivity, etc.), it immediately sends early warning information to the user through the terminal, reminding to take timely measures.

[0044] Remote monitoring and management: Users can remotely view the health data of the old people through the terminal, including historical data, trend analysis, etc., which helps to discover health problems in time and intervene.

[0045] Intelligent analysis and suggestions: The cloud server uses big data analysis technology to deeply mine the health data of the elderly and provides personalized health suggestions and life guidance to help them improve their living habits and quality of life.

[0046] Emergency rescue mechanism: The system has an emergency call function. If the elderly person falls or has other emergencies, they can quickly seek help through the pre-set emergency contacts or medical service institutions.

[0047] Low power consumption and long battery life: Thanks to the low power consumption of NB-IoT technology and the optimized design of the system, the entire monitoring system can ensure performance while achieving long battery life, reducing the need for frequent charging.

[0048] Application scenarios: This system is suitable for various scenarios that require remote monitoring of the health status of the elderly, including but not limited to single-person households, nursing homes, community service centers, etc. By wearing or installing monitoring devices on the elderly, combined with mobile APP or web platforms, comprehensive monitoring and management of the health status of the elderly can be achieved, effectively improving their life safety and health level.

[0049] The elderly health and safety monitoring system based on NB-IoT is efficient, stable, and safe, providing strong technical support for health management and emergency rescue of the elderly, and is an important development direction in the future of smart elderly care.

[0050] The sensor module includes a communication-connected MQ-135 harmful gas sensor module, a MAX30102 heart rate and blood oxygen sensor module, a DS18B20 temperature sensor module, and a MPU60506 axis attitude sensor module. The MQ-135 harmful gas sensor module, MAX30102 heart rate and blood oxygen sensor module, DS18B20 temperature sensor module, and MPU60506 axis attitude sensor module are connected to the main control module to respectively obtain whether harmful gases exist in the environment where the elderly are located, the heart rate, blood oxygen, body temperature, and posture of the elderly. The main control module includes an STM32F103ZET6 microcontroller. The following is a detailed expansion of these sensor modules:

[0051] MQ-135 harmful gas sensor module

[0052] Function: MQ-135 is a multi-gas sensor that responds to multiple harmful gases (such as ammonia, hydrogen sulfide, benzene, smoke, etc.), but its main purpose is to detect the concentration of harmful gases in indoor air, especially those that may pose a threat to the health of the elderly.

[0053] Working Principle: MQ-135 sensor uses internal metal oxide semiconductor material. When it comes into contact with harmful gases, its resistance value will change. This change can be converted into an electrical signal output, thus realizing the measurement of harmful gas concentration.

[0054] Application: In the environment where the elderly live, the MQ-135 sensor can monitor air quality in real time. Once it finds that the concentration of harmful gases exceeds the standard, it will send an alarm message through the main control module to remind the elderly or their families to take measures.

[0055] MAX30102 Heart Rate and Blood Oxygen Sensor Module

[0056] Function: MAX30102 is a high-integration and low-power heart rate and blood oxygen saturation monitoring sensor. It can accurately calculate heart rate and blood oxygen saturation by emitting specific wavelength light to the skin and measuring the intensity change of reflected light.

[0057] Working Principle: MAX30102 sensor uses the PPG (Photoplethysmography) technology to capture the change of blood volume in blood vessels with the heartbeat, thus calculating the heart rate. At the same time, by measuring the absorption difference of different wavelength light (usually red light and infrared light), it can calculate the blood oxygen saturation.

[0058] Application: For the elderly, real-time monitoring of heart rate and blood oxygen saturation is very important, as they can reflect the cardiovascular health status of the elderly. Once abnormalities are found, the system can immediately notify the user to avoid potential health risks.

[0059] DS18B20 Temperature Sensor Module

[0060] Function: DS18B20 is a high-precision, digital output temperature sensor that can measure temperatures ranging from -55°C to +125°C.

[0061] Working Principle: DS18B20 sensor integrates temperature sensing elements and A / D converters internally, which can directly convert temperature values into digital signals for output, simplifying the interface design with the main control module.

[0062] Application: In the elderly health and safety monitoring system, DS18B20 sensor is used to monitor the temperature of the environment where the elderly live, as well as the body temperature of the elderly (if the sensor directly contacts the skin). This is of great significance in preventing health problems caused by high or low temperatures, such as heatstroke, colds, etc.

[0063] MPU60506 Axis Attitude Sensor Module

[0064] Function: MPU6050 is a 6-axis motion tracking device that integrates a 3-axis gyroscope and a 3-axis accelerometer, capable of measuring the attitude, acceleration, and angular velocity of an object in real time.

[0065] Working Principle: MPU6050 uses internal MEMS (Micro-Electro-Mechanical System) sensors to capture small motion changes and convert them into digital signals. Through fusion algorithms, it can calculate the attitude information of the object (such as pitch angle, roll angle, etc.).

[0066] Application: In the elderly health and safety monitoring system, MPU6050 sensors are used to monitor the posture and motion state of the elderly. For example, when the elderly fall, the system can immediately detect the sudden change in posture and trigger the alarm mechanism. In addition, by monitoring the daily activity patterns of the elderly over a long period of time, it can provide data support for health management and exercise recommendations.

[0067] Master Module (STM32F103ZET6 Microcontroller)

[0068] Function: STM32F103ZET6 is a high-performance, low-power 32-bit microcontroller with rich peripheral interfaces and powerful processing capabilities, making it suitable for complex embedded system applications.

[0069] Working Principle: The STM32F103ZET6 microcontroller connects various sensor modules through an internal bus system, receives their output data, and processes, stores, and transmits them. At the same time, it is responsible for controlling the running logic of the entire system, including the working mode of the sensors, data acquisition frequency, data transmission protocol, etc.

[0070] Application: In the elderly health and safety monitoring system, the STM32F103ZET6 microcontroller serves as the "brain" of the system, coordinating the work of various sensor modules, achieving real-time data acquisition, processing, and transmission. Through communication with cloud servers or terminal devices, it can upload the health data of the elderly to the remote platform in real time for users to view and analyze.

[0071] The master module is connected with a 32.768K crystal oscillator circuit to provide the clock required for the operation of the master module. The master module is connected with a speaker driven by an S8050 triode to issue an alarm when monitoring detects harmful gases, falls, and abnormal heart rate, blood oxygen, and body temperature data in the environment of the elderly. The master module is connected with a program download circuit to burn code into the master module. The following is a detailed expansion of these sensor modules:

[0072] In the old health and safety monitoring system, the main control module is not only the core of data processing, but also the bridge connecting various sensors and actuators. In order to ensure that the main control module can run stably and accurately, and can send out alarm at critical moment, the system design integrates multiple key components, including crystal oscillator circuit, speaker driving circuit and program download circuit.

[0073] Crystal oscillator circuit (32.768K Hz)

[0074] Function: Crystal oscillator circuit is the basis of the operation of the main control module, which provides a stable clock signal to ensure that the internal clock system of the main control module can accurately time. In the old health and safety monitoring system, the main control module relies on this clock signal to synchronize the data collection, data processing and data transmission of various sensors.

[0075] Reason for selection: The crystal oscillator frequency of 32.768K Hz is one of the common clock frequencies for many low-power microcontrollers. It not only meets the system's demand for clock accuracy, but also reduces power consumption while ensuring performance, which is particularly important for monitoring systems that need to run for a long time.

[0076] Application: In system design, the crystal oscillator circuit is usually designed to be directly connected to the clock pin of the main control module to ensure stable transmission of the clock signal. Through the accurate clock signal, the main control module can accurately control the sampling frequency, data processing speed and data transmission period of various sensors, thereby realizing real-time monitoring and analysis of the health data of the old people.

[0077] Speaker driving circuit (S8050 triode)

[0078] Function: The speaker driving circuit is responsible for converting the alarm signal sent by the main control module into sound output, so that in the case of detecting harmful gas, falling, abnormal heart rate and blood oxygen, body temperature data and other emergency situations in the environment of the old people, the old people or their families can be immediately notified.

[0079] Working principle: When the main control module detects abnormal conditions, it will send a control signal to the speaker driving circuit. After the signal is amplified by the S8050 triode, the speaker will emit an alarm sound. S8050 triode, as a common NPN silicon triode, has the advantages of stable operation, low noise and low power consumption, and is very suitable for such alarm circuits.

[0080] Application: In the old health and safety monitoring system, the speaker driving circuit is usually designed to be connected to the alarm output pin of the main control module. Once the system detects abnormal conditions, the main control module will trigger the alarm circuit immediately, and the speaker will emit a clear and loud alarm sound to attract the attention of the old people or their families.

[0081] Program download circuit

[0082] Function: The program download circuit is the interface for the master module to communicate with external devices such as computers, programmers, etc. It allows users to burn the written code or updated program into the master module. This is crucial for system debugging, upgrading and maintenance. The specific program is not limited and is not a necessary technical feature of this application.

[0083] Working principle: The program download circuit usually uses serial communication (such as UART, ISP, etc.) or parallel programming interface (such as JTAG, SWD, etc.). During programming, the external device establishes a connection with the master module through the program download circuit and transmits the code data bit by bit to the storage unit of the master module. After receiving the complete code data, the master module will automatically perform verification and programming operations to write the code into the specified storage area.

[0084] Application: In the development process of the old health and safety monitoring system, the program download circuit is one of the indispensable components. It allows developers to upload code to the master module for testing and optimization during the debugging phase. At the same time, when the system is upgraded or maintained, the updated program can also be burned into the master module through the program download circuit to ensure the continuous and stable operation of the system. The crystal oscillator circuit, speaker drive circuit and program download circuit play a crucial role in the old health and safety monitoring system. They not only ensure the stable operation and accurate timing of the master module, but also can issue alarm notifications to users at critical moments, and allow users to perform system debugging and upgrading. The careful design and optimization of these components provide strong guarantees for the reliability and practicality of the system.

[0085] In a preferred embodiment, the data transmission end is also communicatively connected to a mobile control terminal, which can be any of a mobile phone or a computer.

[0086] The VDD and GND terminals of the DS18B20 temperature sensor are connected to 3.3V and ground respectively, and the DQ terminal of the DS18B20 temperature sensor exchanges data with the master module, and a 10K pull-up resistor is connected between the DQ terminal and the VDD terminal. When the DS18B20 temperature sensor detects the body temperature of the old person, the master module transmits the specific value to the data transmission end, so that the temperature value in the mobile control terminal can change in real time; when the body temperature of the old person reaches 37.2° or below 36° for more than ten minutes, the master module controls the speaker to issue an alarm, writes AT instructions to the BC-26 NB-IoT wireless communication module to obtain the latitude and longitude position information in RMC, and controls the data transmission end to send the old person's high or low temperature prompt and the old person's position information to the mobile control terminal.

[0087] MAX30102 heart rate and blood oxygen sensor module integrated infrared LED, red light LED and photodetector, through the infrared LED and red light LED irradiation of the skin, and then the photodetector collects reflected light signal, and then calculate the blood oxygen saturation and heart rate, the master module uses the I2C protocol and MAX30102 heart rate and blood oxygen sensor module communication; MAX30102 heart rate and blood oxygen sensor module will be sent into the master module for heart rate and blood oxygen calculation, and the calculated value is sent to the terminal mobile phone through the data sending end to realize real-time update, the calculated value of heart rate and blood oxygen exceeds the set threshold, the master module controls the loudspeaker to issue an alarm, and controls the data transmission end to send the prompt of abnormal heart rate and blood oxygen and the old person's position information to the mobile control terminal.

[0088] The MQ-135 air quality sensor module AO port analog output accesses the master module. The master module judges the voltage value of the sampled AO, 0.1V-0.3V is low pollution, which is considered to be relatively pollution-free, 4V or more is high concentration, which is considered to be serious pollution, and 0.3V-4V can be considered to be mild pollution; the master module controls the data sending end to send the judgment result to the mobile control terminal to realize real-time update, if the voltage value sampled by the master module is greater than 4V, the master module controls the loudspeaker to issue an alarm, and controls the data transmission end to send the prompt of serious pollution and the old person's position information to the mobile control terminal.

[0089] The MQ-135 air quality sensor detects or measures harmful gases such as ammonia, benzene, sulfur, carbon dioxide, smoke, etc.; the working principle is based on the resistance change of semiconductor gas sensitive element, when the gas enters the sensor, it will have a chemical reaction with the sensitive material on the surface of the gas sensitive element, causing the resistance value to change, by measuring the change of resistance value, the size of the concentration of pollution gas is inferred.

[0090] The master module communicates with the 6-axis attitude sensor module of MPU6050 using the I2C protocol. When the 6-axis attitude sensor of MPU6050 tilts too fast towards the X or Z axis, it can be determined that the old person is about to fall or has already fallen. After the master module judges the above situation, it waits for 20 seconds and then judges again whether the old person tilts too much towards the X or Z axis. If both judgments are satisfied, the master module controls the speaker to issue an alarm and controls the data transmission end to send the old person's falling prompt and location information to the mobile control terminal. The 6-axis attitude sensor measurement chip of MPU6050 measures the acceleration and angle parameters of the X, Y, and Z axes, and obtains the attitude angle through data fusion. The RXD pin and TXD pin of the BC-26 NB-IoT wireless communication module are connected to the TXD pin and RXD pin of the master module respectively. After the data monitoring and processing end sends data to the master module for processing, the master module controls the BC-26 NB-IoT wireless communication module to upload the data to the cloud server, and the mobile control terminal obtains the data from the cloud server to realize remote monitoring of the real-time situation of the old person. The BC-26 NB-IoT wireless communication module is a high-performance, low-power, multi-band LTE CatNB1 / CatNB2 wireless communication module, which is connected to the master module through serial communication.

[0091] Technical solutions / principles of the present application:

[0092] 1. Wireless communication technology upgrade: More advanced wireless communication technologies such as 5G, LoRa, NB-IoT, etc. (the present application prefers NB-IoT) are adopted to improve communication distance and stability. These technologies not only have stronger penetration and anti-interference ability, but also can realize low-power, long-distance data transmission, which is very suitable for old people safety monitoring.

[0093] 2. Internet of Things and artificial intelligence integration: Through the Internet of Things technology, various devices in the old people's living environment are connected to form an intelligent monitoring system. At the same time, artificial intelligence technology is used to deeply analyze and mine these data to realize accurate prediction and early warning of the old people's health status.

[0094] 3. Combination of wearable devices and smart home: Wearable devices such as smart watches, health monitoring bands, etc. (the specific sensors are productized) are provided for the old people to monitor their vital signs in real time. At the same time, these devices are combined with the smart home system to improve the convenience and safety of the old people's life through voice control, remote control, etc.

[0095] 4. Wireless communication can be connected with hospitals and communities in addition to sending to family members and children, realizing the establishment of close cooperation relationship with medical institutions, community service centers and other institutions, forming a complete emergency rescue system. When the old people have an emergency, the rescue mechanism can be started quickly, and the old people can be rescued in time and effectively.

[0096] Finally, it should be noted that the utility model is not limited to the above embodiments, but can also have many variations. All variations that can be directly derived or inferred from the disclosed content by those of ordinary skill in the art should be considered within the scope of the utility model.

Claims

1. An old people health and safety monitoring system based on NB-IoT, characterized in that: The data transmission end and a data monitoring and processing end connected with the data transmission end are included. The data transmission end includes a BC-26 NB-IoT wireless communication module, a cloud server and a terminal, and the monitored data is uploaded to the cloud server through the BC-26 NB-IoT wireless communication module, and then the data is sent to the terminal by the cloud server. The data monitoring and processing end includes a sensor module and a master control module, and the monitored data is sent to the master control module for processing. 2.The health and safety monitoring system for the elderly based on NB-IoT according to claim 1, characterized in that: The sensor module includes an MQ-135 harmful gas sensor module, a MAX30102 heart rate and blood oxygen sensor module, a DS18B20 temperature sensor module and an MPU60506 axis posture sensor module connected in communication, and the MQ-135 harmful gas sensor module, the MAX30102 heart rate and blood oxygen sensor module, the DS18B20 temperature sensor module and the MPU60506 axis posture sensor module are connected with the master control module to realize the acquisition of whether the environment where the old people are located exists harmful gas, the heart rate and blood oxygen, the body temperature and the posture of the old people respectively. 3.The health and safety monitoring system for the elderly based on NB-IoT according to claim 1, characterized in that: The master control module is connected with a 32.768K crystal oscillator circuit to provide the clock required for the operation of the master control module. 4.The health and safety monitoring system for the elderly based on NB-IoT according to claim 3, characterized in that: The master control module is connected with a loudspeaker driven by an S8050 triode to alarm when the environment where the old people are located exists harmful gas, the old people fall down, and the heart rate and blood oxygen and the body temperature data are abnormal. 5.The health and safety monitoring system for the elderly based on NB-IoT according to claim 4, characterized in that: The master control module is connected with a program download circuit to burn the code into the master control module. 6.The health and safety monitoring system for the elderly based on NB-IoT according to claim 2 or 5, characterized in that: The BC-26 NB-IoT wireless communication module is a high-performance, low-power, multi-band LTE Cat NB1 / Cat NB2 wireless communication module, which is connected with the master control module through serial communication. 7.The health and safety monitoring system for the elderly based on NB-IoT according to claim 2, characterized in that: The data transmission end is also connected with a mobile control terminal in communication. 8.The health and safety monitoring system for the elderly based on NB-IoT according to claim 7, characterized in that: The mobile control terminal is any one of a mobile phone and a computer. 9.The health and safety monitoring system for the elderly based on NB-IoT according to claim 7, characterized in that: The VDD terminal and the GND terminal of the DS18B20 temperature sensor are connected with 3.3V and the ground respectively, the DQ terminal of the DS18B20 temperature sensor exchanges data with the master control module, and a 10K pull-up resistor is connected between the DQ terminal and the VDD terminal. The MAX30102 heart rate and blood oxygen sensor module integrates an infrared LED, a red light LED and a photodetector, irradiates the skin through the infrared LED and the red light LED, then the photodetector collects the reflected light signal, and then calculates the blood oxygen saturation and the heart rate, the master control module communicates with the MAX30102 heart rate and blood oxygen sensor module by using the I2C protocol, and the MQ-135 air quality sensor module AO port analog output is connected with the master control module. 10.The health and safety monitoring system for the elderly based on NB-IoT according to claim 9, characterized in that: The main control module communicates with the 6-axis attitude sensor module of the MPU6050 by using an I2C protocol; the RXD pin and the TXD pin of the BC-26 NB-IoT wireless communication module are connected to the TXD pin and the RXD pin of the main control module respectively; after the data monitoring and processing end sends data to the main control module for processing, the main control module controls the BC-26 NB-IoT wireless communication module to upload the data to the cloud server, and the mobile control terminal obtains the data from the cloud server to realize remote monitoring of the real-time situation of the old people.

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