CN203789907U - Firefighter vital sign monitoring device based on Bluetooth technology - Google Patents

Abstract

The utility model relates to a device for monitoring vital signs of firefighters based on bluetooth technology. It consists of an acquisition module, a processing module, a Bluetooth forwarding module and a monitoring terminal. The acquisition module is connected to the processing module. The Bluetooth forwarding module is a Bluetooth transceiver chip and a wireless module. The wireless module is a WIFI module and/or a mobile communication module. The monitoring terminal supports Bluetooth. and WiFi devices. The acquisition module collects the vital signs data of firefighters and transmits them to the processing module. The processing module packages the data and sends them to the Bluetooth forwarding module through Bluetooth signals. The Bluetooth forwarding module sends the vital signs data of firefighters to the monitoring terminal through WIFI or communication network. The utility model provides a Bluetooth-based firefighter's vital sign monitoring device that can be separated from a PC, has strong portability, and expands the activity range of the monitored firefighters. Real-time monitoring of the vital signs of firefighters during fire fighting and rescue and professional training, and timely sending out early warning signals of abnormal vital signs.

Description

A device for monitoring vital signs of firefighters based on bluetooth technology

technical field

The utility model relates to a vital sign monitoring device, in particular to a firefighter vital sign monitoring device, in particular to a firefighter vital sign monitoring device based on bluetooth technology.

Background technique

According to statistics from the Fire Department of the Ministry of Public Security, my country's fire brigade sacrificed 6 fire officers and soldiers due to professional training between 2008 and 2010, and 22 people died due to overwork. number of sacrifices. According to statistics from the US NFPA, heart disease has always been the leading cause of death among firefighters in the United States. In the past 25 years, 1,333 firefighters died of heart disease. Therefore, how to monitor firefighters’ vital signs (such as heart rate, body temperature, exercise intensity, etc.) , will have positive significance to reduce the death rate of firefighters.

At present, there is a lack of special technology and devices for monitoring the vital signs of firefighters. In medicine, the vital sign monitoring device obtains the signal through the acquisition device, converts it into human physiological data, and sends the data to the designated device or system through a certain transmission method, and compares it with the known medical and health information parameter threshold value. alarm can be issued. Monitoring equipment requires that the equipment can continuously monitor the physiological parameters of the human body for a long time, grasp the changing trend, point out the critical situation, and provide the basis for the doctor's emergency treatment and treatment.

However, such devices generally have independent ECG monitoring or other functions. It does not meet the requirements for multi-sign parameter monitoring in fire protection applications.

Currently existing portable vital sign monitoring devices generally have an acquisition module, a touch screen visual screen, a monitoring operation module, and the like. Through the integrated Bluetooth module to achieve wireless, the monitoring information obtained by the acquisition device can be stored locally or dumped to a computer with a Bluetooth interface, and then transmitted to the network for analysis, processing and sharing of data. The acquisition module of this technology generally uses conventional contact leads, and it is often necessary to apply conductive liquid to increase the electrode signal strength. Moreover, in the Bluetooth wireless transmission, although the wireless Bluetooth technology is used, it often only uses the file transfer function of the Bluetooth protocol, and it is necessary to dump the files through a cooperative device such as a computer with a storage function, and then perform network transmission. Collaboration devices for this technology are not universally portable, and monitoring devices have a limited range of movement. In firefighting applications, both firefighting and rescue and operational training may involve large-scale movement, so this type of technology is not suitable for firefighting applications.

Contents of the invention

The purpose of this utility model is to propose a firefighter's vital signs monitoring device based on bluetooth technology, which solves the technical problems that the monitoring device in the prior art does not have the versatility to be carried around and the activity area of the monitored firefighters is limited, and provides A Bluetooth-based firefighter's vital sign monitoring device that can be separated from a PC, has strong portability, and expands the activity range of the monitored firefighters. Real-time monitoring of firefighters' vital signs (such as heart rate, body temperature, exercise intensity, etc.)

The utility model solves the above-mentioned technical problems through the following technical solutions: a firefighter's vital signs monitoring device based on Bluetooth technology, including an acquisition module, a processing module, a Bluetooth forwarding module and a monitoring terminal, the output terminal of the acquisition module is connected to the processing The input end of the module is connected, the output end of the processing module is connected to the input end of the bluetooth forwarding module, the output end of the bluetooth forwarding module is connected to the network, and the input end of the monitoring terminal is connected to the network; the bluetooth forwarding module includes a bluetooth transceiver chip and a wireless module, the collection module includes conductive fibers, and the conductive fibers can directly contact the human body without applying conductive liquid to increase the signal strength of the electrodes. The processing module includes a first filter amplifier circuit, a first-stage amplifier circuit, a second-stage amplifier circuit, a third-stage amplifier circuit, a fourth-stage amplifier circuit and a CPU connected in sequence, and the output terminal of the CPU is connected to the bluetooth The transceiver chip is connected; the first-stage amplifying circuit is a band-pass filter circuit, the second-stage amplifying circuit is a trap circuit, the fourth-stage amplifying circuit is a voltage follower circuit, the CPU includes an analog-to-digital conversion circuit, and the first filtering amplifies The circuit is connected with the conductive fiber, and the output end of the conductive fiber is connected with the first filter amplifier circuit through the second-stage filter amplifier circuit; the bluetooth transceiver chip has data processing and packaging capabilities.

In the present invention, the collection module further includes a body temperature sensor, which is used to collect body temperature.

In the utility model, the processing module also includes a second filter amplifier circuit and a conditioning and amplifier circuit, the output end of the second filter amplifier circuit is connected to the CPU, the input end is connected to the second filter amplifier circuit, and the second filter amplifier circuit The input end is connected with a body temperature sensor.

In the present invention, the acquisition module further includes a digital accelerometer and a gyroscope, and the digital accelerometer and the gyroscope are respectively connected to the CPU.

In the utility model, the wireless module adopts a WIFI module and/or a mobile communication module, and the monitoring terminal is a device supporting Bluetooth and WiFi (such as a mobile phone, a Pad, a WiFi Hub, etc.).

The using method of the present utility model is as follows:

The acquisition module collects the vital signs data of firefighters and transmits them to the processing module. The processing module packages the data and sends them to the Bluetooth forwarding module through Bluetooth signals. The Bluetooth forwarding module sends the vital signs data of firefighters to the monitoring terminal through WIFI or communication network. The mobile communication module can be a communication module supporting GSM network, CDMA network or other networks. The Bluetooth forwarding module is a device that supports Bluetooth and other communication networks at the same time. It does not need powerful computing, processing, and storage functions. It can be made very small, or it can be a common device such as a mobile phone or a PDA. With the help of the Bluetooth forwarding module, the monitored firefighters can greatly expand the range of movement and have strong portability. A monitoring terminal can receive signals sent by multiple Bluetooth forwarding modules at the same time, improving monitoring efficiency and saving human resources. The ECG signal is first filtered and micro-signal amplifier, and the three-lead mode driven by the right leg can reduce noise interference and improve the signal-to-noise ratio. The amplified signal passes through the first-stage amplifying circuit—band-pass filter in turn, with a passband frequency of 0.1~100Hz, the second-stage amplifying circuit—notch circuit, which eliminates interference waves, the third-stage amplifying circuit amplifies the signal strength, and the fourth-stage amplifying circuit The stage amplifier circuit acts as a voltage follower and buffers voltage changes. Then, the data enters the AD of the main CPU, converts it into an ECG digital signal and encapsulates the message, and then sends it to the Bluetooth transceiver chip for transmission. The temperature signal first passes through the micro-signal amplification circuit, and then enters the sensor conditioning circuit. The voltage follows the change of the buffer voltage, corrects the signal, obtains the temperature and voltage signal, calculates the corresponding temperature value, and sends it to the processing module package. The digital accelerometer and gyroscope monitor the motion state, generate a digital signal corresponding to the state, and send it to the processing module. After being processed by the motion state detection algorithm, it is sent to the Bluetooth forwarding module. The movement status of the monitored firefighters can be monitored through the digital accelerometer and gyroscope. When a fall or fall occurs, the personnel at the monitoring end can find out and provide rescue at the first time.

The utility model forwards data such as ECG, temperature and exercise status to the network through devices that are very popular and support Bluetooth and WiFi at the same time (such as mobile phones, Pads, WiFi Hubs, etc.) Network sharing to complete the processing, transmission, storage and analysis of firefighters' signs information.

The substantive effect brought by the utility model is that the non-invasive collection of vital sign data of firefighters is realized by contacting the human body through the conductive fiber without applying conductive liquid. Then structure the data by processing the algorithm, and then use the general bluetooth standard protocol to construct the local area network access mode to send the data. The utility model uses a highly integrated CPU+Bluetooth module for embedded development, which greatly reduces the volume of the acquisition device, is safe and non-invasive, wearable real-time monitoring, and satisfies long-term application.

Description of drawings

Fig. 1 is a structural representation of the utility model.

Fig. 2 is a circuit block diagram of an acquisition module and a processing module of the present invention.

Labels in the figure: 1. Acquisition module, 2. Processing module, 3. Bluetooth forwarding module, 4. Monitoring terminal, 5. Network, 101. Conductive fiber, 102. Body temperature sensor, 103. Digital accelerometer, 104. Gyroscope, 201, the first filtering amplifier circuit, 202, the first stage amplifier circuit, 203, the second stage amplifier circuit, 204, the third stage amplifier circuit, 205, the fourth stage amplifier circuit, 206, the CPU, 207, the bluetooth transceiver chip, 208. A secondary filtering and amplifying circuit. 209. A second filtering and amplifying circuit. 210. A conditioning and amplifying circuit.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific embodiments.

Embodiment 1: a kind of mobile monitoring device based on bluetooth of the present embodiment, as shown in Figure 1, comprises collection module 1, processing module 2 and bluetooth forwarding module 3, and bluetooth forwarding module 3 is connected with monitoring terminal 4 through network 5.

As shown in FIG. 2 , the acquisition module 1 includes a conductive fiber 101 , a body temperature sensor 102 , a digital accelerometer 103 and a gyroscope 104 . The processing module 2 includes a first filter amplifier circuit 201, a first stage amplifier circuit 202, a second stage amplifier circuit 203, a third stage amplifier circuit 204, a fourth stage amplifier circuit 205, a CPU 206, a Bluetooth transceiver chip 207, and a second stage filter amplifier circuit. Circuit 208 , second filtering and amplifying circuit 209 and conditioning and amplifying circuit 210 .

Wherein: the body temperature sensor 102 adopts the Tsic506 chip of ZMD Company, the digital accelerometer 103 adopts the ADXL345 chip of ADI Company, and the gyroscope 104 adopts the ADXRS450 chip of ADI Company.

The conductive fiber 101, the first filter amplifier circuit 201, the first stage amplifier circuit 202, the second stage amplifier circuit 203, the third stage amplifier circuit 204, the fourth stage amplifier circuit 205, the CPU 206 and the bluetooth transceiver chip 207 are sequentially connected. The conductive fiber 101 is also connected to the first filter amplifier circuit 201 through the secondary filter amplifier circuit 208 .

Among them, CPU206 adopts STM32F10x chip of ST Company, and bluetooth transceiver chip 207 adopts nRF2401 chip of Nordic Company.

The body temperature sensor 102 is sequentially connected to the second filtering and amplifying circuit 209 and the conditioning and amplifying circuit 210, and the conditioning and amplifying circuit 210 is connected to the CPU. The digital accelerometer 103 and the gyroscope 104 are respectively connected to the CPU.

The acquisition module draws on the standard three-lead mode, contacts the human body through conductive fibers, and obtains human body potential information. The acquisition device uses the STM32F10x chip to provide the control and realization of the Bluetooth function, the ADXL series chip and the gyroscope provide the motion state detection function, and use this as the core embedded development.

When collecting, the multi-point conductive fiber transmits the electrical signal of the human body to the electrode, passes through the multi-stage amplification circuit, enters the sampling AD, and converts the electrical signal into a digital signal, then performs interface packaging processing, and sends it to the Bluetooth forwarding module. The forwarding module wirelessly accesses the network through a WIFI network or a mobile communication network to realize real-time data transmission and sharing.

The ECG signal is first filtered and micro-signal amplifier, and the three-lead mode driven by the right leg can reduce noise interference and improve the signal-to-noise ratio. The amplified signal passes through the first-stage amplifying circuit—band-pass filter in turn, with a passband frequency of 0.1~100Hz, the second-stage amplifying circuit—notch circuit, which eliminates interference waves, the third-stage amplifying circuit amplifies the signal strength, and the fourth-stage amplifying circuit The stage amplifier circuit acts as a voltage follower and buffers voltage changes. Then, the data enters the AD of the main CPU, converts it into an ECG digital signal and encapsulates it, and then sends it to the Bluetooth transceiver chip for transmission.

The temperature signal first passes through the micro-signal amplification circuit, and then enters the sensor conditioning circuit. The voltage follows the change of the buffer voltage, corrects the signal, obtains the temperature and voltage signal, calculates the corresponding temperature value, and sends it to the processing module package.

The digital accelerometer and gyroscope monitor the motion state, generate a digital signal corresponding to the state, and send it to the processing module. After being processed by the motion state detection algorithm, it is sent to the Bluetooth transceiver chip.

According to the precision requirements of the acquired health information data, the CPU defines 10 bits as the precision of RAW data. At the same time, 5 bytes of message header information are also defined, including 2 bytes of message command word, 2 bytes of message length, etc. According to the business and chip processing capabilities, combined with network performance, use the appropriate packet header length. The processing module sets the message header information, including length, data type, terminal product type, battery voltage, data valid bit, encryption and other business information, and then packs it together with the data flow, and sends it to the Bluetooth forwarding module through the Bluetooth transceiver chip.

The LAN access and data forwarding of the Bluetooth protocol can be realized by the Bluetooth LAN access point (LAP).

The Bluetooth-based mobile monitoring device of this embodiment realizes non-invasive contact acquisition, integrates various functions such as ECG, temperature and exercise status monitoring, and greatly reduces the volume of the monitoring device. Moreover, the acquisition terminal can be used as a standardized input device for other Bluetooth interface systems.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. The utility model does not depart from the spirit and scope of the utility model There will also be various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (5)

1. A firefighter's vital signs monitoring device based on bluetooth technology, comprising acquisition module, processing module, bluetooth forwarding module and monitoring end, the output end of described acquisition module is connected with the input end of described processing module, it is characterized in that The output end of the processing module is connected to the input end of the bluetooth forwarding module, the output end of the bluetooth forwarding module is connected to the network, and the input end of the monitoring terminal is connected to the network; the bluetooth forwarding module includes a bluetooth transceiver chip and a wireless module, and the acquisition module includes Conductive fiber, the conductive fiber can be directly in contact with the human body, the processing module includes a first filter amplifier circuit, a first-stage amplifier circuit, a second-stage amplifier circuit, a third-stage amplifier circuit, and a fourth-stage amplifier circuit sequentially connected and CPU, the output end of the CPU is connected with the bluetooth transceiver chip; the first-stage amplifying circuit is a band-pass filter circuit, the second-stage amplifying circuit is a trap circuit, and the fourth-stage amplifying circuit is a voltage follower circuit, The CPU includes an analog-to-digital conversion circuit, the first filter amplifier circuit is connected to the conductive fiber, the output end of the conductive fiber is connected to the first filter amplifier circuit through the second stage filter amplifier circuit, and the Bluetooth transceiver chip has data processing and packaging capabilities. 2. The device for monitoring vital signs of firefighters based on Bluetooth technology according to claim 1, characterized in that the collection module also includes a body temperature sensor. 3. The firefighter's vital signs monitoring device based on Bluetooth technology according to claim 1, wherein the processing module also includes a second filter amplifier circuit and a conditioning and amplifier circuit, and the output terminal of the second filter amplifier circuit It is connected to the CPU, the input end is connected to the second filter amplifier circuit, and the input end of the second filter amplifier circuit is connected to the body temperature sensor. 4. The firefighter's vital signs monitoring device based on bluetooth technology according to claim 1, characterized in that said acquisition module also includes a digital accelerometer and a gyroscope, and said digital accelerometer and said gyroscope are respectively connected to said CPU connection. 5. The firefighter's vital signs monitoring device based on Bluetooth technology according to claim 1, wherein the wireless module adopts a WIFI module and/or a mobile communication module, and the monitoring terminal is a device supporting Bluetooth and WiFi.