CN102613965B - Physical sign monitoring instrument based on wireless radio-frequency technology and monitoring method thereof - Google Patents
Physical sign monitoring instrument based on wireless radio-frequency technology and monitoring method thereof Download PDFInfo
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Abstract
A physical sign monitoring instrument based on a wireless radio-frequency technology is used for acquiring human body physical sign data and transferring the data to a monitoring base station device in a radio-frequency communication mode and comprises a plurality of sensors, a sensor data acquiring module, a processor module, a Zigbee network communication module and a power module. The sensor data acquiring module is respectively connected with the sensors and the processor module and is used for sending the data acquired by the sensors to the processor module, the processor module is respectively connected with the Zigbee network communication module and the power module and used for processing, displaying and storing received data and transfers the received data to the monitoring base station device through the Zigbee network communication module, and the power module provides power for the processor module. The physical sign monitoring instrument based on the wireless radio-frequency technology has the advantages of being low in power consumption, real-time and efficient in data transmission, strong in ad hoc network capability and high in transmission reliability.
Description
Technical Field
The invention relates to the field of physical sign monitoring, in particular to a physical sign monitor based on a wireless radio frequency technology and a monitoring method thereof.
Background
Body temperature, pulse, blood pressure and other physical sign data are important physiological indexes for reflecting the health condition of a human body, and in the past, the physical sign parameters of wounded persons are manually surveyed by aid of rescue workers, so that the survey labor intensity is high, the efficiency is low and the effectiveness is poor. And the wounded are classified manually by medical staff, and after the initial classification, the wounded wait for subsequent treatment on site, at the moment, because the medical resources of an emergency medical response group are limited, the wounded often need to wait for a long time before sending back, and during the waiting period, the condition of the wounded may be worsened, and the secondary injury, such as hypothermia, hypotension, cardiac tamponade and the like, can endanger life if the wounded is not treated immediately. In addition, as the command center on land or on a ship cannot know statistics and details of wounded persons in various places in real time, the command cannot distribute the number of the wounded persons for rescue and treatment in various rescue units uniformly and reasonably. Therefore, the physiological indexes of the patient are continuously monitored, and an important basis can be provided for the treatment of the wounded.
With the development of sensor technology, embedded computer technology and wireless communication technology, vital sign monitoring systems based on wireless sensor networks are receiving more and more attention. The system based on the common radio frequency chip and the user-defined transmission protocol has the advantages of simple implementation and low cost, and has the defects of low reliability and poor universality; the system based on the Bluetooth protocol has high data transmission rate, short action distance, high power consumption and weak networking capability; as a Low-speed wireless personal area network (LR-WPAN) protocol specification established on the ieee802.15.4 communication standard, ZigBee forms a system having the advantages of Low complexity, Low power consumption, high reliability, and strong networking capability, and thus becomes a hotspot of application research in the field.
In conclusion, a ZigBee network protocol is urgently needed to be provided for a health service command department, the life sign monitoring system based on the ZigBee network protocol is suitable for being used as a real-time, efficient and reliable vital sign monitoring system, and the vital sign monitoring system can monitor and collect the wounded situations in real time in wartime and at ordinary times and can timely communicate and report the situations to a command center.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a real-time, efficient and reliable physical sign monitor based on a radio frequency technology.
Another object of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a real-time, efficient and reliable method for monitoring physical signs based on radio frequency technology.
In order to achieve the above object, the present invention provides a physical sign monitor based on a radio frequency technology, for acquiring human body physiological index data and transmitting the data to a monitoring base station device by radio frequency communication, comprising: the system comprises a plurality of sensors, a sensor data acquisition module, a processor module, a Zigbee network communication module and a power supply, wherein the sensors are used for acquiring human body physiological index data in real time, the sensor data acquisition module is respectively connected with the sensors and the processor module and is used for transmitting the data acquired by the sensors to the processor module, the processor module is respectively connected with the Zigbee network communication module and the power supply and is used for processing, displaying and storing the received data, the data are transmitted to monitoring base station equipment through the Zigbee network communication module, the power supply module provides power for the processor module, the system further comprises a CPU, a conditioning circuit, an A/D conversion circuit and a memory, the conditioning circuit is used for filtering and amplifying signals acquired by the sensors and then transmitting the signals to the A/D conversion circuit, and the A/D conversion circuit is used for converting the signals into digital signals and then, the CPU analyzes and processes the digital signals, and then stores the finally obtained physiological characteristic data into the memory, and transmits the physiological characteristic data to the monitoring base station equipment through the Zigbee network communication module.
The physical sign monitor based on the radio frequency technology according to the preferred embodiment of the invention further comprises a digital display screen, wherein the digital display screen is connected with the processor module and is used for displaying the data received by the processor module.
According to the sign monitor based on the radio frequency technology in the preferred embodiment of the invention, the sensor data acquisition module and the processor module are connected through a serial interface, and the serial interface adopts an RS232 interface.
In the RF-based sign monitor according to the preferred embodiment of the present invention, the processor module employs the Zigbee CC2530 series chip of TI.
In accordance with a preferred embodiment of the present invention, the sensor of the monitor comprises:
a body temperature sensor: the device is used for realizing body temperature data monitoring through an infrared ear temperature technology, and is worn on the head of a wounded in a hangers mode to acquire real-time body temperature data;
a pulse sensor: the device is used for acquiring the heart rate and pulse data of the wounded in real time in a finger clamping mode; and the number of the first and second groups,
a blood pressure sensor: the device is used for measuring the fluctuation of the radial artery by acting on the radial artery of the wrist to reflect the blood pressure of a tested person.
In the RF-based sign monitor according to the preferred embodiment of the present invention, the conditioning circuit and the A/D converter circuit are CMOS circuits.
In the sign monitor based on the rf technology according to the preferred embodiment of the present invention, the power module includes a 3V battery and a MAX856 dc pump-up circuit, the MAX856 dc pump-up circuit is connected to the battery for boosting the voltage to 5V when the power supply voltage is converted.
In order to achieve the above object, the present invention further provides a method for monitoring physical signs based on the radio frequency technology, which divides an application program of a physical sign monitor based on the radio frequency technology into four threads, namely a main thread, a network receiving and analyzing thread, a serial port receiving thread and a serial port analyzing thread, to perform data monitoring, and specifically comprises the following steps:
(1) the main thread applies for required resources and initializes all used equipment and modules at the initial stage, then creates the other three threads, and then enters an event waiting loop to wait for monitoring the operation of a base station user or messages sent by other threads;
(2) the network receiving and analyzing thread monitors a network interface, waits for the arrival of a network data packet, analyzes the network data packet after the thread receives the network data packet, extracts effective data, informs a main thread through a message mechanism, and automatically calls a specific callback function to process according to the type of a message by the main thread;
(3) the serial port receiving thread monitors the serial port, and when data arrives at the serial port, the thread sequentially places the data received by the serial port into a buffer area shared by the serial port receiving thread and the serial port analyzing thread in byte units;
(4) the serial port analysis thread obtains a data packet from the buffer area in sequence by taking bytes as units, verifies and analyzes the obtained data to obtain effective physiological characteristic data, sends a specific type of message according to the type of the effective data and the main thread, and calls a corresponding callback function to change a physiological characteristic value displayed on a user interface of the monitoring base station after receiving the message.
The sign monitor and the monitoring method based on the wireless radio frequency technology adopt a radio frequency communication mode to transmit data, realize data transmission based on a ZigBee network protocol, have real-time, high-efficiency and reliable data transmission, low power consumption and strong ad hoc network capability, realize real-time monitoring and gathering of wounded injury in wartime and at ordinary times, and timely carry out communication report to a command center. In addition, the invention also adopts a CC2530 microcontroller with low power consumption and high integration level, and all circuits adopt CMOS integrated circuits with extremely small static power consumption and extremely easy control of dynamic power consumption, thereby realizing the optimization of 'more power consumption, less power consumption and no power consumption'. Therefore, compared with the prior art, the method has the advantages of low power consumption, real-time and efficient data transmission, strong ad hoc network capability and high transmission reliability.
Drawings
FIG. 1 is a schematic diagram of a physical sign monitor based on RF technology according to the present invention;
fig. 2 is a flow diagram of the method for monitoring signs based on the radio frequency technology.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, a physical sign monitor based on a radio frequency technology for collecting human body physiological index data and transmitting the data to a monitoring base station device by radio frequency communication includes: a plurality of sensors 10, a sensor data acquisition module 20, a processor module 30, a Zigbee network communication module 40, a power module 50, and a digital display screen 60. The sensor 10 is used for collecting human body physiological index data in real time, the sensor data collecting module 20 is connected with the sensor 10 and is connected with the processor module 30 through an RS232 serial interface so as to send the data collected by the sensor 10 to the processor module 30, the processor module 30 is respectively connected with the Zigbee network communication module 40 and the power module 50 so as to process, display and store the received data, and transmits the data to the monitoring base station equipment through the Zigbee network communication module 40, the power module 50 provides power for the processor module 30, the monitoring base station equipment further comprises a CPU31, a conditioning circuit 32, an A/D conversion circuit 33 and a memory 34, the conditioning circuit 32 is used for filtering and amplifying signals collected by the sensor 10 and then sending the signals to the A/D conversion circuit 33, the A/D conversion circuit 33 is used for converting the signals into digital signals and then sending the digital signals to the CPU31, the CPU31 analyzes and processes the digital signal, and stores the physiological characteristic data into the memory 34, and transmits the physiological characteristic data to the monitoring base station device through the Zigbee network communication module 40. The memory 34 is used to store temporary data collected by the sensor 10, and no substantial storage of the data is made after the processor module 30 transmits the data. The digital display screen 60 is connected to the processor module 30 for displaying data received by the processor module 30.
In this embodiment, the processor module 30 is a zigbee cc2530 chip of TI, the conditioning circuit 32 and the a/D conversion circuit 33 are CMOS circuits, the power module 50 includes a 3V battery and a MAX856 dc pump-up circuit, the MAX856 dc pump-up circuit is connected to the battery, and the voltage is raised to 5V when the power supply voltage is converted.
The CC2530 microcontroller is a low power, highly integrated microcontroller specifically designed for handheld devices. The CC2530 is based on an ARM architecture, adopts an ARM920T processor core, and has the clock frequency up to 203 MHz. The microcontroller not only has a processing unit (CPU), but also integrates some common interface controllers, such as a serial interface (UART), an LCD controller supporting a Thin Film Transistor (TFT), a flash memory (NAND FLASH) controller, a touch screen interface, a Universal Serial Bus (USB) controller, etc., and in addition, the microcontroller also has a Memory Management Unit (MMU) built therein.
Low power consumption is an important issue in system design, and CMOS integrated circuits are used in this system because they have very small static power consumption, very controllable dynamic power consumption, and good power management characteristics. The power consumption management principle of the CMOS circuit is to reduce the average power consumption of the system in operation to the maximum extent, realize the pursuit target of zero power consumption, and implement the optimization of 'more power consumption, less power consumption and no power consumption' on the system according to the power consumption characteristics of the CMOS circuit.
The requirements of the wearable device in two aspects of power consumption and size are comprehensively considered, and meanwhile, for level matching with a wireless transceiver module in the device, a 3V battery is selected as a whole power supply of the system in the embodiment. The MAX856 is a high-efficiency DC-DC pump-up circuit, is particularly suitable for a circuit for supplying power to a battery, has the conversion efficiency of 85% at 100mA, has the power consumption of only 1 muA in a turn-off mode, has the low-voltage monitoring function, and conveniently realizes the power supply of two voltage modes of 3V and 5V by the voltage boost of the MAX 856.
In this embodiment, the sensor 10 includes a body temperature sensor, a pulse sensor, and a blood pressure sensor. Wherein,
a body temperature sensor: the device is used for realizing body temperature data monitoring through an infrared ear temperature technology, and is worn on the head of a wounded in a hangers mode to acquire real-time body temperature data;
a pulse sensor: the device is used for acquiring the heart rate and pulse data of the wounded in real time in a finger clamping mode; and the number of the first and second groups,
a blood pressure sensor: the device is used for measuring the fluctuation of the radial artery by acting on the radial artery of the wrist to reflect the blood pressure of a tested person.
It should be noted that the sensors adopted in the invention are not limited to the above sensor types, and the physical sign monitor based on the radio frequency technology of the invention reserves abundant interfaces for the extension of the sensors, and if other types of physiological index data are required, such as data of electrocardio, blood sugar, blood oxygen, cerebral blood rheology and the like, the corresponding sensors are only required to be accessed into the reserved interfaces to form new wireless sensor nodes, and corresponding embedded control and processing software is developed to correspondingly upgrade the sensor data acquisition modules. For example, by installing a cerebral blood rheology monitoring sensor and combining with a portable B-ultrasonic machine, the blood rheology of the brain and other physiological tissues of the wounded can be monitored after the sensor data acquisition module is correspondingly upgraded.
Referring to fig. 2 again, to achieve the above object, the present invention further provides a method for monitoring physical signs based on the radio frequency technology, which divides an application program of a physical sign monitor based on the radio frequency technology into a main thread, a network receiving and analyzing thread, a serial port receiving thread and a serial port analyzing thread for data monitoring, and specifically includes the following steps:
(1) the main thread applies for required resources and initializes all used equipment and modules at the initial stage, then creates the other three threads, and then enters an event waiting loop to wait for monitoring the operation of a base station user or messages sent by other threads;
(2) a network receiving and analyzing thread monitors a network interface (namely a Zigbee network communication module), waits for the arrival of a network data packet, analyzes the network data packet after the thread receives the network data packet, extracts effective data, informs a main thread through a message mechanism, and automatically calls a specific callback function to process according to the type of a message by the main thread;
(3) the serial port receiving thread monitors the serial port (connected with the sensor data acquisition module 20), and when data arrives at the serial port, the thread sequentially places the data received by the serial port into a buffer area shared by the serial port receiving thread and the serial port analyzing thread in byte units;
(4) the serial port analysis thread obtains a data packet from the buffer area in sequence by taking bytes as units, verifies and analyzes the obtained data to obtain effective physiological characteristic data, sends a specific type of message according to the type of the effective data and the main thread, and calls a corresponding callback function to change a physiological characteristic value displayed on a user interface of the monitoring base station after receiving the message.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are within the scope of the present invention without departing from the content of the technical solution of the present invention.
Claims (1)
1. A monitoring method of a physical sign monitor based on a wireless radio frequency technology,
the physical sign monitor based on the wireless radio frequency technology is used for collecting human body physiological index data and transmitting the data to the monitoring base station equipment in a radio frequency communication mode, and is characterized by comprising the following steps: the system comprises a plurality of sensors, a sensor data acquisition module, a processor module, a Zigbee network communication module and a power module, wherein the sensors are used for acquiring human body physiological index data in real time, the sensor data acquisition module is respectively connected with the sensors and the processor module and is used for sending the data acquired by the sensors to the processor module, the processor module is respectively connected with the Zigbee network communication module and the power module and is used for processing, displaying and storing the received data, the data are transmitted to monitoring base station equipment through the Zigbee network communication module, the power module provides power for the processor module, the system further comprises a CPU, a conditioning circuit, an A/D conversion circuit and a memory, the conditioning circuit is used for filtering and amplifying signals acquired by the sensors and then sending the signals to the A/D conversion circuit, the A/D conversion circuit is used for converting signals into digital signals and then sending the digital signals to the CPU, and the CPU analyzes and processes the digital signals and then stores finally obtained physiological characteristic data into the memory and transmits the physiological characteristic data to the monitoring base station equipment through the Zigbee network communication module;
the method is characterized in that a physical sign monitor application program based on a radio frequency technology is divided into a main thread, a network receiving analysis thread, a serial port receiving thread and a serial port analysis thread for data monitoring, and the method specifically comprises the following steps:
(1) the main thread applies for required resources and initializes all used equipment and modules at the initial stage, then creates the other three threads, and then enters an event waiting loop to wait for monitoring the operation of a base station user or messages sent by other threads;
(2) the network receiving and analyzing thread monitors a network interface, waits for the arrival of a network data packet, analyzes the network data packet after the thread receives the network data packet, extracts effective data, informs a main thread through a message mechanism, and automatically calls a specific callback function to process according to the type of a message by the main thread;
(3) the serial port receiving thread monitors the serial port, and when data arrives at the serial port, the thread sequentially places the data received by the serial port into a buffer area shared by the serial port receiving thread and the serial port analyzing thread in byte units;
(4) the serial port analysis thread obtains a data packet from the buffer area in sequence by taking bytes as units, verifies and analyzes the obtained data to obtain effective physiological characteristic data, sends a specific type of message to the main thread according to the type of the effective data, and after receiving the message, the main thread calls a corresponding callback function to change a physiological characteristic value displayed on a user interface of the monitoring base station.
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| CN104983407A (en) * | 2015-05-28 | 2015-10-21 | 南昌大学 | Multifunctional wearable medical monitor system based on general computer |
| CN105141328A (en) * | 2015-08-14 | 2015-12-09 | 江苏轩博电子科技有限公司 | Health examination data radio-frequency transmission equipment and method applied to home-based care system |
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| CN105517198A (en) * | 2016-02-02 | 2016-04-20 | 南京高华科技股份有限公司 | Wireless sensing network system |
| CN106302680A (en) * | 2016-08-06 | 2017-01-04 | 内蒙古大学 | A kind of data based on Internet of Things display background system |
| CN108734938A (en) * | 2018-05-24 | 2018-11-02 | 文丹 | A kind of healthy data acquisition system based on wireless-transmission network |
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Inventor after: Liu Xiaorong Inventor after: Liu Jian Inventor after: Deng Yuexian Inventor after: Liu Wenbao Inventor after: Xie Tai Inventor after: Feng Jingliang Inventor after: Fan Chenfang Inventor after: Liu Baohai Inventor after: Tang Hewei Inventor after: Yuan Changrong Inventor after: Cheng Bin Inventor after: Chen Guoliang Inventor after: Luo Wenmin Inventor after: Guan Qun Inventor after: Xu Zhiyin Inventor after: Sha Kun Inventor after: Zhang Lulu Inventor after: Gu Hong Inventor after: Qi Liang Inventor after: Sun Haian Inventor after: He Xiang Inventor after: Zhu Hongping Inventor before: Liu Xiaorong Inventor before: Liu Jian Inventor before: Deng Yuexian Inventor before: Liu Wenbao Inventor before: Xie Tai Inventor before: Feng Jingliang Inventor before: Chen Guoliang Inventor before: Sha Kun Inventor before: Zhang Lulu Inventor before: Gu Hong Inventor before: Qi Liang Inventor before: Sun Haian Inventor before: He Xiang Inventor before: Zhu Hongping |
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Free format text: CORRECT: INVENTOR; FROM: LIU XIAORONG CHEN GUOLIANG SHA KUN ZHANG LULU GU HONG QI LIANG SUN HAIAN HE XIANG ZHU HONGPING LIU JIAN DENG YUEXIAN LIU WENBAO XIE TAI FENG JINGLIANG TO: LIU XIAORONG CHEN GUOLIANG SHA KUN ZHANG LULU GU HONG QI LIANG SUN HAIAN HE XIANG ZHU HONGPING LIU JIAN DENG YUEXIAN LIU WENBAO XIE TAI FENG JINGLIANG FAN CHENFANG LIU BAOHAI TANG HEWEI YUAN CHANGRONG CHENG BIN LUO WENMIN GUAN QUN XU ZHIYIN |
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