CN1287726C - Medical treatment monitoring system, apparatus and method based on wireless sensor network - Google Patents

Abstract

The invention relates to the technical field of medical monitoring, in particular to a medical monitoring system, device and method based on a wireless sensor network. The first-layer network including the family monitoring system sensor network and the community and hospital monitoring system sensor network are connected to the social linkage network through the community and hospital LAN. The first layer network is composed of monitoring base station equipment and biomedical sensor nodes around the human body; the second layer network is composed of monitoring base stations between the first layer network and the ordinary network; the third layer network of social linkage is formed through the Internet. The method includes: the method of the medical monitoring system, the method of the first-layer network work of the medical monitoring, the method of social medical network linkage, the method of monitoring base station equipment, and the method of monitoring sensor nodes. It can be widely used in family medical monitoring or hospital medical monitoring, community medical care, multi-community linkage and the whole society linkage.

Description

Medical monitoring system, device and method based on wireless sensor network

technical field

The invention relates to the technical field of medical monitoring, in particular to a medical monitoring system, device and method based on a wireless sensor network.

Background technique

At present, medical monitoring technology can be divided into two categories. One is to monitor the vital indicators of patients in hospitals by professional doctors or professional technicians using special instruments; the other is to monitor the vital indicators of patients in ordinary people's homes or outdoors. The patients themselves or their family members use the home medical monitoring system to monitor the patients. The vital indicators obtained from the monitoring are analyzed by the patients themselves or their family members under the guidance of doctors, and are properly fed back to relevant doctors.

Most of the medical clinical monitoring technologies use special sensors and processors to transmit various vital signs of patients to the monitoring terminal through wired or wireless technology. The home medical monitoring system also uses multifunctional medical monitors to monitor various vital signs of patients.

Most of the monitoring methods currently used in hospitals use fixed medical monitors and connecting devices to connect sensor probes between patients and monitoring devices for signal transmission. Complicated equipment and numerous connections will cause psychological pressure and tension to the patient, directly affect the patient's physical condition, and cause a certain gap between the data obtained from the diagnosis and the real value. For the doctor, cumbersome operations will not only delay the final diagnosis. The best time for diagnosis and treatment. If it is accidentally due to equipment errors or operational errors, it may have a huge impact on the diagnosis and treatment of the disease, or even irreparable losses, thus bringing inconvenience to the patient and medical monitoring personnel, and affecting the diagnosis of the disease.

For home medical monitoring systems, simple vital sign monitoring equipment is generally used, such as simple blood sugar, blood oxygen, blood pressure (pulse) and other monitoring equipment, and only completes the measurement of a single indicator. In the medical monitoring equipment, there are individual multi-functional comprehensive monitors that can monitor multiple vital signs indicators, but the process of use is quite cumbersome. It is necessary to use wires on the comprehensive monitor to lead out multiple sensor probes and place them on the On the body of the monitored person, different vital index parameters are monitored. Various wires are prone to breakage and breakage during use, which affects the use of the entire set of instruments. Moreover, in the process of using measuring instruments by general home users, the wards often need to monitor vital indicators at any time during activities, so the connecting wires on the equipment bring huge inconvenience to the use of measuring instruments and the actions of patients. At the same time, the general measurement results of home medical monitors are observed by family members themselves, but most of them do not have professional medical knowledge and cannot interpret the results of multiple indicators well. It will cause a waste of resources. If the test results are not analyzed by professionals, it may delay the pathogenesis and miss the best time for treatment.

Contents of the invention

According to the deficiencies of the prior art, the purpose of the present invention is to design a new monitoring device and build a network structure on it. The purpose is to use the high-frequency wireless multi-channel data transmission system to transmit the information between the medical sensor and the monitoring control instrument, reduce the connection between the monitoring equipment and the medical sensor, so that the ward can have more free movement space and relax. Mood can obtain more accurate measurement indicators. At the same time, due to the method of wireless transmission of information, the loss of medical equipment is reduced, the life of medical equipment is increased, and the cost of the hospital is saved.

Because there are many electronic instruments and equipment used in hospitals, mobile phones and pagers cannot be used in part of the hospital to prevent interference to medical equipment. Therefore, the wireless frequency band used in the present invention is a free frequency band publicly available in the world at 2.4GHz. Effectively reduce the transmission power of communication equipment, so that the interference to other surrounding equipment is minimized.

The technical solution of the present invention is: a medical monitoring system based on a wireless sensor network, including the first-layer network of the family monitoring system sensor network and the community and hospital monitoring system sensor network, connected to the social linkage network through the community and hospital local area network.

A new multi-layer network structure and system theory and implementation method are proposed, that is, a first-layer network, also called a piconet (1), is formed by monitoring base station equipment (4) and sensor nodes (5) around the human body. Machine and telephone contact with monitoring base station equipment (4), piconet (1) signal transmitting station, see accompanying drawing 1, carry out comprehensive data transmission; On this first layer network, between monitoring equipment under common network Form the second layer network (also known as micro-grid) (2), see accompanying drawing 2, and form social linkage network (third layer network) (3) see accompanying drawing 3 through the Internet. The sensor node (5) uses a central controller to control and collect data from a series of vital index sensors, and sends the data to the monitoring base station equipment (4) of the first-layer network through wireless multi-channel communication, and the base station device transmits the data To the main control computer base station on the second floor for processing and storage.

Description of drawings

FIG. 1 is a first-layer network structure diagram applied to a sensor network of a family monitoring system according to the present invention.

Fig. 2 is a sensor network structure diagram of the monitoring system applied to communities and hospitals according to the present invention.

Fig. 3 is a social linkage network diagram for accessing the Internet of the present invention.

Fig. 4 is a device structure diagram of monitoring base station equipment according to the present invention.

Fig. 5 is a device structure diagram of a sensor node of the present invention.

Fig. 6 is a flow chart of the method of the sensor network-based medical monitoring system of the present invention.

Fig. 7 is a flow chart of the first-layer network method of the sensor network of the family monitoring system of the present invention.

Fig. 8 is a flow chart of the sensor network of the hospital area monitoring system of the present invention.

Fig. 9 is a flow chart of the sensor network of the community and hospital monitoring system of the present invention.

Fig. 10 is a flow chart of the apparatus for monitoring base station equipment of the present invention.

Fig. 11 is a device flowchart of the sensor node of the present invention.

Detailed ways

In the first-layer network (piconet) of the sensor network of the family monitoring system in Fig. 1, the wireless multi-channel data transmission module is used, and the monitoring base station equipment (4) and the sensor node (5) form a wireless sensor pico around the human body (8). network (first layer network) (1), the sensor side collects data according to the control information sent by the control terminal of the monitoring base station equipment, and transmits the obtained data to the monitoring base station equipment through the wireless transmission module, and the monitoring base station equipment can display the data , and transmit the data to the base station (6) of the hospital through a wired or wireless method, enter the main control monitoring terminal, and perform corresponding data analysis, recording and storage by the main computer of the hospital. The sensors can communicate with each other, and can also communicate with the hospital base station, so a multi-hop ad hoc network can be formed. When a sensor is out of the monitoring range of the monitoring base station equipment, but can still communicate with other sensor nodes, the sensor node can automatically discover other nodes, and transmit its own data to the monitoring base station equipment through other sensor nodes (4).

In the monitoring system sensor network of the community and hospital in Figure 2, the monitoring base station equipment forms a micro-network (second layer network) (2), which can communicate with each other, and the monitoring base station equipment whose signal cannot reach the hospital base station , the signal can be indirectly transmitted to the hospital base station (6) of the second-layer network through other monitoring base station equipment for relay routing.

The monitoring system sensor network of the community and the hospital is composed of multiple piconets (1) and the hospital base station (6) to form the second-layer network, also known as the micronetwork (2), and the hospital base station (6) is connected to the server computer (9), The hospital or community wired network (3) is connected through the hospital wired network (7) to transmit information, and the piconets (1) can communicate with each other.

The monitoring base station equipment (4) is designed as a handheld device as the main equipment for human-computer interaction, communicates with other monitoring base station equipment around, and also controls the measurement module. The measurement module forms a sensor node (5) to monitor the corresponding vital indicators, and the measurement results are displayed through the monitoring base station equipment or transmitted to the server.

The medical monitoring base station equipment is designed as a handheld device, which integrates keyboards, display screens, communication interfaces, simple measurement modules, etc. on the equipment, and can easily operate the instrument through the keyboard, call the corresponding module functions, and store the working mode and measurement results in the Displayed on the display screen, in order to facilitate the operator to read the data. At the same time, the device can transmit data to the computer through the communication interface, and use the computer to control the handheld instrument and read the internal data.

A set of monitoring equipment includes: monitoring base station equipment (handheld equipment) (4), and sensor nodes (5).

When the system is used in a hospital, the monitoring base station equipment and the sensor nodes form a piconet (the first layer network), and the monitoring base station equipment is used as the base station of the piconet to control the sensor nodes set on the human body, and from the sensor node Collect the collected data. The monitoring base station equipment forms a micro-network (the second layer network), and communicates with each other through wireless multi-channel communication. For the monitoring base station equipment that cannot reach the hospital base station, it can be routed through other monitoring base station equipment, and the information can be transmitted indirectly. It is transmitted to the hospital base station to realize the micro-grid structure. The monitoring base station equipment uses a hospital base station to connect to the main control computer, and the main control computer is connected to the hospital system local area network. The main control computer can manage the handheld devices and collect data through the hospital base station.

When the system is used at home, the monitoring base station equipment is designed as a handheld device. As a home base station, it forms a piconet with the sensor nodes. The sensor nodes collect the life indicators of the monitored personnel according to the control information sent by the monitoring base station equipment. It is wirelessly transmitted to the monitoring base station equipment for display and recording. According to different needs, the monitoring base station equipment is designed with GSM (GPRS) short message module, telephone line modem interface, network interface and serial interface for direct communication with the computer. The short message module, modem interface, and network interface can directly send the collected data to the main server of the hospital, and the hospital will store and manage them centrally. If the vital indicators reach the early warning value, corresponding responses will be made according to the different conditions of the patient. The handheld monitoring base station equipment can also use the serial interface to directly store the data on the computer in the family of the monitored person, and the family members can store, analyze and manage it by themselves. If necessary, it can also be transmitted to the main server of the hospital through the network.

The hand-held monitoring base station equipment is used as the base station of the piconet, and the human-computer interaction part includes: input keyboard, where the operator inputs operation instructions; LCD screen, which displays the measurement data for the operator to view. The data interface provided by the monitoring base station equipment includes: serial communication interface, network interface, telephone line modem interface, radio frequency wireless communication interface, GSM short message communication interface.

The social linkage network connected to the Internet in Figure 3 includes the first-layer network (piconet) of the sensor network of the family monitoring system and the sensor network of the monitoring system of the community and the hospital. Connect with the social linkage network (the third layer network 3) through the hospital local area network (7). Constitute a sensor network-based medical monitoring system.

All data of monitoring base station equipment is controlled and processed by the core processor. The processor receives the operation instructions input by the operator through the keyboard, and displays the operation of the equipment, measurement results and other data through the liquid crystal display. The processor uses different communication interfaces to transmit data to the upper-level network according to the operation of the operator, or to receive instructions from the upper-level network and make response operations. The structural diagram of the monitoring base station equipment is shown in Figure 4. The monitoring base station equipment (4) is input to the central processing unit by the input keyboard and display screen of the man-machine interface, and the central processing unit is connected to the telephone line modem, GSM short message module, network interface, radio frequency communication module, serial communication interface.

The sensor node includes: wireless radio frequency communication module, sensor module.

The node controller receives the data instruction sent by the base station through the radio frequency module, uses the sensor to collect the data, and packs the data and sends it to the base station after collection. The sensor module can use the blood oxygen measurement module to measure blood oxygen, the blood pressure measurement module to measure blood pressure, pulse, etc., the blood sugar measurement module to measure blood sugar content, and the ECG measurement module to measure ECG and display the ECG.

The structure diagram of the sensor node is shown in Figure 5. The sensor node (5) is composed of a sensor module, a central processing unit and a radio frequency communication module, the sensor module is connected to the central processing unit, and the central processing unit is connected to the radio frequency communication module.

Because the system is powered by batteries, in order to reduce battery consumption and maximize the use time, the system uses low power consumption technology and performs strict power management. For devices that are not working, make them completely sleep and cut off their power. , to maximize battery life.

The method of the medical monitoring system based on the sensor network of Fig. 6, its specific steps are as follows:

Step S6-1, at first start the first layer network (piconet) (1), set up the connection of sensor node (5) and monitoring base station equipment (4) and mutual communication;

Step S6-2, the first-layer network communicates, and the monitoring base station equipment (4) controls the sensor node (5) to collect data;

Step S6-3, for the sensor nodes that cannot reach the base station directly through wireless network transmission, data transmission is performed through the first layer network, and the sensor nodes that reach the base station transmit the data to the monitoring base station equipment in multiple hops;

Step S6-4, the hospital area network (2) is connected, and the monitoring base station equipment (4) establishes a connection with the server computer (9) through the hospital base station (6); data communication is performed, and the data collected by the sensor node (5) is transmitted to the server in the database;

Step S6-5, for the monitoring base station equipment that cannot directly transmit data to the server computer through the wireless network, connect through the second layer network, and the monitoring base station equipment arriving at the server computer uses a multi-hop transmission method to transfer the data to the computer ;

Step S6-6, the monitoring base station equipment (4) performs data communication with the server, and transmits the data collected by the sensor node (5) to the server database;

In step S6-7, the entire community and the hospital wired network (3) communicate with each other to realize data information sharing.

The first layer network method of the family monitoring system sensor network of Fig. 7, its specific steps are as follows:

Step S7-1, first start monitoring base station equipment (4);

Step S7-2, then start the sensor node (5), the two devices are respectively set with the correct working mode;

Step S7-3, setting the monitoring base station equipment so that the monitoring base station equipment finds the sensor node and can directly establish a direct connection with the node that the monitoring base station equipment communicates with;

Step S7-4, the nodes that cannot directly communicate with the monitoring base station equipment establish a connection with the monitoring base station equipment through network multi-hop;

Step S7-5, the monitoring base station equipment controls the sensor nodes to collect real-time data;

Step S7-6, while transmitting the collected data to the monitoring base station equipment through wireless network communication;

Step S7-7, the monitoring base station equipment stores and displays the collected data;

In step S7-8, at the same time, the data is transmitted to the server computer (9) through the hospital base station (6) according to the set protocol, and the work of the first layer network is completed.

Fig. 8 is the method for the sensor network of the hospital area monitoring system of the present invention, and its specific steps are as follows:

Step S8-1, first start the monitoring base station equipment (4), after establishing the first layer network (1);

Step S8-2, the monitoring base station equipment is connected with the server computer (9) through the hospital base station (6);

Step S8-3, for the monitoring base station equipment that cannot reach the server computer, then search for other monitoring base station equipment, and reach the hospital base station (6) through the multi-hop transmission of the wireless network;

Step S8-4, the data is transmitted to the hospital server computer;

Step S8-5, performing data communication between the monitoring base station equipment and the server computer to realize the hospital area network (2).

Fig. 9 is the monitoring system sensor network method of community and hospital of the present invention, and its specific steps are as follows:

Step S9-1, first start all medical monitoring system server computers in the network;

Step S9-2, the computers send applications to each other, communicate and establish connections;

Step S9-3, after the connection is established, the servers make connection requests with each other. If the request is approved, data communication is performed between all servers to realize data sharing. If the request between the servers does not respond, the requesting server enters the waiting state state;

Step S9-4, reconnecting when the connection is needed next time.

Fig. 10 is a flow chart of the apparatus for monitoring base station equipment of the present invention. The specific steps are as follows:

Step S10-1, start the monitoring base station equipment, perform power-on self-check, and start the corresponding device;

Step S10-2, starting the keyboard and liquid crystal display part;

Step S10-3, the monitoring base station equipment searches for surrounding sensor nodes;

Step S10-4, if it is detected that there is a sensor node around, establish a network connection with the node, if no sensor node is detected, then enter the loop detection state, and continue to search for the sensor node;

Step S10-5, while monitoring the base station equipment to find other sensor nodes to establish a new connection;

Step S10-6, the monitoring base station equipment uses the wireless network to control the sensor nodes to collect human physiological indicators;

Step S10-7, simultaneously storing the collected data on the local memory and displaying it on the liquid crystal display;

Step S10-8, if a network connection to the upper level is required, perform data communication and establish a network connection;

Step S10-9, if the connection is successful, data communication is carried out, and the data stored in the monitoring base station equipment is transferred to the upper network server computer.

Fig. 11 is a device flowchart of the sensor node of the present invention. The specific steps are as follows:

Step S11-1, the sensor node (5) is started, and the internal circuit is initialized, so that the CPU, the wireless communication device, and the sensor work normally;

Step S11-2, start the sensor;

Step S11-3, establishing a connection with the monitoring base station equipment through the wireless network, and the monitoring base station equipment (4) controls data collection;

Step S11-4, transmitting the data to the monitoring base station equipment through the wireless network.

Claims (9)

1. A medical monitoring system based on a wireless sensor network, characterized in that the system includes: the first-layer network of the sensor network of the family monitoring system and the sensor network of the monitoring system of the community and the hospital, connected to the social linkage through the community and the hospital local area network network; Wherein, the first-layer network of the sensor network of the family monitoring system includes multiple sensor nodes and monitoring base station equipment. When a certain sensor is out of the monitoring range of the monitoring base station equipment, but can still communicate with other sensor nodes, the sensor Transmit its own data to the monitoring base station equipment through other sensor nodes; The second-layer network of the monitoring system sensor network of the community and the hospital includes a plurality of first-layer networks and hospital base stations, and the hospital base station is in contact with the server computer through the community or hospital local area network. When the monitoring base station equipment signal of the first-layer network cannot When reaching the hospital base station, the signal is indirectly transmitted to the hospital base station of the second-layer network through other monitoring base station equipment for transit routing. 2. the medical monitoring system based on wireless sensor network according to claim 1, is characterized in that, Described guardianship base station equipment (4), by the input keyboard of man-machine interface, display screen, input to central processing unit, central processing unit is connected to the telephone line modem of communication interface, GSM short message module, network interface, radio frequency communication module again , Serial communication interface. 3. the medical monitoring system based on wireless sensor network according to claim 1, is characterized in that, The sensor node (5) is composed of a sensor module, a central processing unit and a radio frequency communication module, the sensor module is connected to the central processing unit, and the central processing unit is connected to the radio frequency communication module. 4. A medical monitoring system method based on a wireless sensor network, characterized in that the method may further comprise the steps: Step S6-1, first start the first layer network (1), establish the connection between the sensor node (5) and the monitoring base station equipment (4) and the communication between each other; Step S6-2, the first-layer network communicates, and the monitoring base station equipment (4) controls the sensor node (5) to collect data; Step S6-3, for the sensor nodes that cannot reach the base station directly through wireless network transmission, data transmission is performed through the first layer network, and the sensor nodes that reach the base station transmit the data to the monitoring base station equipment in multiple hops; Step S6-4, the hospital area network (2) is connected, and the monitoring base station equipment (4) establishes a connection with the server computer (9) through the hospital base station (6); data communication is performed, and the data collected by the sensor node (5) is transmitted to the server in the database; Step S6-5, for the monitoring base station equipment that cannot directly transmit data to the server computer through the wireless network, connect through the second layer network, and the monitoring base station equipment arriving at the server computer uses a multi-hop transmission method to transfer the data to the computer ; Step S6-6, the monitoring base station equipment (4) performs data communication with the server, and transmits the data collected by the sensor node (5) to the server database; In step S6-7, the entire community and the hospital wired network (3) communicate with each other to realize data information sharing. 5. the medical monitoring system method based on wireless sensor network according to claim 4, is characterized in that, the first layer network method of family monitoring system sensor network, its concrete steps are as follows: Step S7-1, first start monitoring base station equipment (4); Step S7-2, then start the sensor node (5), the two devices are respectively set with the correct working mode; Step S7-3, setting the monitoring base station equipment so that the monitoring base station equipment finds the sensor node and can directly establish a direct connection with the node that the monitoring base station equipment communicates with; Step S7-4, the nodes that cannot directly communicate with the monitoring base station equipment establish a connection with the monitoring base station equipment through network multi-hop; Step S7-5, monitoring the base station equipment to control the sensor nodes to collect real-time data; Step S7-6, while transmitting the collected data to the monitoring base station equipment through wireless network communication; Step S7-7, the monitoring base station equipment stores and displays the collected data; In step S7-8, at the same time, the data is transmitted to the server computer (9) through the hospital base station (6) according to the set protocol, and the work of the first layer network is completed. 6. the medical monitoring system method based on wireless sensor network according to claim 4, is characterized in that, the method for hospital area monitoring system sensor network, its concrete steps are as follows: Step S8-1, first start the monitoring base station equipment (4), after establishing the first layer network (1); Step S8-2, the monitoring base station equipment is connected with the server computer (9) through the hospital base station (6); Step S8-3, for the monitoring base station equipment that cannot reach the server computer, then search for other monitoring base station equipment, and reach the hospital base station (6) through the multi-hop transmission of the wireless network; Step S8-4, the data is transmitted to the hospital server computer; Step S8-5, performing data communication between the monitoring base station equipment and the server computer to realize the hospital area network (2). 7. the medical monitoring system method based on wireless sensor network according to claim 4, is characterized in that, the monitoring system sensor network method of community and hospital, its concrete steps are as follows: Step S9-1, first start all medical monitoring system server computers in the network; Step S9-2, the computers send applications to each other, communicate and establish connections; Step S9-3, after the connection is established, the servers make connection requests with each other. If the request is approved, data communication is performed between all servers to realize data sharing. If the request between the servers does not respond, the requesting server enters the waiting state state; Step S9-4, reconnecting when the connection is needed next time. 8. the medical monitoring system method based on wireless sensor network according to claim 4, is characterized in that, the method for monitoring the device of base station equipment, its specific steps are as follows: Step S10-1, start the monitoring base station equipment, perform power-on self-check, and start the corresponding device; Step S10-2, start the keyboard and liquid crystal display part; Step S10-3, the monitoring base station equipment searches for surrounding sensor nodes; Step S10-4, if it is detected that there is a sensor node around, establish a network connection with the node, if no sensor node is detected, then enter the loop detection state, and continue to search for the sensor node; Step S10-5, while monitoring the base station equipment to find other sensor nodes to establish a new connection; Step S10-6, the monitoring base station equipment uses the wireless network to control the sensor nodes to collect human physiological indicators; Step S10-7, simultaneously storing the collected data on the local memory and displaying it on the liquid crystal display; Step S10-8, if a network connection to the upper level is required, perform data communication and establish a network connection; Step S10-9, if the connection is successful, data communication is carried out, and the data stored in the monitoring base station equipment is transferred to the upper network server computer. 9. the medical monitoring system method in wireless sensor network according to claim 4, is characterized in that, the method for sensor node device, its concrete steps are as follows: Step S11-1, the sensor node (5) is started, and the internal circuit is initialized, so that the CPU, the wireless communication device, and the sensor work normally; Step S11-2, start the sensor; Step S11-3, establish a connection with the monitoring base station equipment through the wireless network, and perform data collection under the control of the monitoring base station equipment (4); Step S11-4, transmitting the data to the monitoring base station equipment through the wireless network.

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