CN105187510A - Wireless sensor network based ward monitoring system and method - Google Patents
Wireless sensor network based ward monitoring system and method Download PDFInfo
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- CN105187510A CN105187510A CN201510496605.9A CN201510496605A CN105187510A CN 105187510 A CN105187510 A CN 105187510A CN 201510496605 A CN201510496605 A CN 201510496605A CN 105187510 A CN105187510 A CN 105187510A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
- H04L67/125—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks involving control of end-device applications over a network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/55—Push-based network services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
Abstract
The invention relates to a wireless sensor network based ward monitoring system. A monitoring terminal of the system is installed in a ward, and all terminal nodes periodically collect monitoring data at a fixed time and send the monitoring data to a ZigBee coordinator through a wireless transmission manner; the ZigBee coordinator gathers the monitoring data and sends the gathered monitoring data to a ZigBee-WiFi gateway module and a ZigBee-GPRS gateway module through the wireless transmission manner, and the two gateway modules perform protocol conversion on the monitoring data and send the monitoring data to a monitoring management center through a WiFi network or a GPRS network; and the monitoring management center finishes storing, displaying, analyzing and processing the monitoring data and pushes the monitoring data and analysis and processing results to a user side. Through adoption of the system, a doctor can remotely monitor ward environment parameters and patient vital sign parameters in real time, and the system has good invulnerability and safety.
Description
Technical field
The invention belongs to medical treatment detection device technical field, relate to a kind of ward supervisory control system based on wireless sensor network and method.
Background technology
Wireless sensor network is a kind of special wireless self-organization network, by a large amount of transducers, and the information in perception, collection, process and transmission network overlay area, and send to network ownership.It does not need very high transmission bandwidth, only need lower propagation delay time and low power consumption, nodes is numerous, widely distributed, the Wireless Networking requirement of various miniaturized low-cost equipment (as temperature-adjusting device, lighting controller, environmental detection sensor etc.) can be met, can be widely used in industry, agricultural, medical treatment and daily life.
In medical, along with the modernization development of economy and the raising day by day of living standards of the people, and the development of the communication technology is more and more rapider, and medical modern problem is more and more paid attention to.Wireless communication technology, ubiquitous sensing technology, social networks technology and data analysis technique are all very ripe, are enough to wireless medical is become a reality, and the hope reducing heavy health care burden is no longer a dream.Major part Health Care Services just can not occur when seeing a doctor once in a while, but stays at home, on car and carry out whenever and wherever possible in workplace.Wireless medical monitoring becomes a study hotspot, has very large development prospect.
But, existing medical monitoring system, substantially adopt and manually to make the rounds of the wards or signal of telecommunication connecting line connects the mode of each equipment, the former efficiency is low, and medical resource takies greatly; The latter's transmission range is limited, connects up loaded down with trivial details, and extensibility is not enough, and transmission means is single, and practical function is bad.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of ward supervisory control system based on wireless sensor network and method, and this system makes doctor can in remote real time monitoring ward environment parameter and patient vital signs parameter, survivability and fail safe good.
In order to solve the problems of the technologies described above, the ward supervisory control system based on wireless sensor network of the present invention comprises monitoring terminal, ZigBee telegon, Zigbee-WiFi gateway module, ZigBee-GPRS gateway module, supervision and management center; Monitoring terminal is arranged in ward, wherein each terminal node periodically timing acquiring Monitoring Data, and Monitoring Data is sent to ZigBee telegon by wireless transmission method; The Monitoring Data of monitoring terminal node collection gathers and is sent to Zigbee-WiFi gateway module and ZigBee-GPRS gateway module by wireless transmission method by ZigBee telegon; Zigbee-WiFi gateway module carries out the protocol conversion of Zigbee and WiFi to Monitoring Data, and Monitoring Data is sent to supervision and management center by WiFi network; ZigBee-GPRS gateway module carries out the protocol conversion of Zigbee and GPRS to Monitoring Data, and Monitoring Data is sent to supervision and management center by GPRS network; The Monitoring Data that supervision and management center receives Zigbee-WiFi gateway module and the transmission of ZigBee-GPRS gateway module is also stored in database, shows, analysis and treament Monitoring Data and analysis and treament result are pushed to user side to Monitoring Data simultaneously.
In described monitoring terminal, each terminal node structure is identical, comprises transducer group and radio frequency transceiving module; Transducer group comprises ward environment parameter acquisition transducer and patient vital signs parameter acquisition transducer; The Monitoring Data of each transducer collection is sent to ZigBee telegon by radio frequency transceiving module.
Described environmental parameter pick-up transducers comprises humiture integral sensor, gas sensor and optical sensor; Patient vital signs parameter acquisition transducer comprises measurement of bldy temperature transducer and heart rate measurement transducer.
The environmental parameter of ward number, sick bed number and correspondence and patient sign parameter are stored in database and are pushed to user side by described monitoring management center in table form; Draw broken line graph according to heart rate data and this broken line graph is pushed to user side.
Also air velocity transducer is comprised in described transducer group; In the ward of air velocity transducer collection, air velocity is sent to ZigBee telegon by radio frequency transceiving module.
Air velocity Monitoring Data in ward is sent to Zigbee-WiFi gateway module and ZigBee-GPRS gateway module by wireless transmission method by ZigBee telegon; Zigbee-WiFi gateway module carries out the protocol conversion of Zigbee and WiFi to this Monitoring Data, and it is sent to supervision and management center by WiFi network; ZigBee-GPRS gateway module carries out the protocol conversion of Zigbee and GPRS to this Monitoring Data, and it is sent to supervision and management center by GPRS network; Air velocity Monitoring Data in the ward of supervision and management center reception Zigbee-WiFi gateway module and the transmission of ZigBee-GPRS gateway module is also stored in database.
Monitoring Data and analysis and treament result are pushed to user side by the mode of APP message by supervision and management center.
The present invention also comprises the automatic controller be arranged in ward, air-conditioning, humidifier, electric light and blower fan; Automatic controller is communicated with electric light with Zigbee-WiFi gateway module, ZigBee-GPRS gateway module, air-conditioning, humidifier, blower fan by wireless transmission method, receive ambient temperature, relative air humidity, gas concentration lwevel, the intensity of illumination data of Zigbee-WiFi gateway module or the transmission of ZigBee-GPRS gateway module, and control the opening and closing of air-conditioning, humidifier, blower fan and electric light respectively, to adjust ward environment parameter according to these data.
Utilize the above-mentioned method monitored ward based on the ward supervisory control system of wireless sensor network as follows:
The standard of automatic controller to the ambient temperature received, relative air humidity, gas concentration lwevel, intensity of illumination data and setting compares judgement; If ward environment normal temperature standard is 22 ~ 26 °, normal air RH range is 40% ~ 60%, and normal gas concentration lwevel is lower than 1000ppm, and normal ward intensity of illumination is not less than 55Lux, in ward, the time of having a rest is 22:00-7:00, and treatment time is 7:01-21:59; If the temperature data display ward temperature received is less than 22 ° or higher than 26 °, then automatic controller controls air-conditioning and automatically opens and carry out heating up or lowering the temperature, and when temperature is adjusted between 22 ~ 26 °, automatic controller controls air-conditioning and automatically cuts out; If the relative air humidity data display ward air relative humidity pa received is lower than 40%, then automatic controller controls humidifier and automatically runs, when relative air humidity increase to more than 60% time, automatic controller controls humidifier and automatically cuts out; If the dense carbon dioxide degrees of data display ward environment gas concentration lwevel parameter received is higher than 1000ppm, then automatic controller control blower fan runs automatically, when gas concentration lwevel parameter is reduced to below 1000ppm, automatic controller controls blower fan and automatically cuts out; Be 22:00-7:00 when the time of simultaneously reading from system, then automatic controller controls electric light and cuts out; Be 7:01-21:59 when the time, and the intensity of illumination received is lower than 55Lux, then automatic controller controls electric light and opens; When intensity of illumination is increased to more than 55Lux, automatic controller controls electric light and cuts out;
Described monitoring management center compares judgement to the patient temperature received and heart rate data; If patient's regular temperature standard is less than 37 °, normal cardiac rate scope is 60 ~ 100 beats/min; If the temperature data display patient temperature received is higher than 37 °, then monitoring management center pushes to user side and represents the too high warning message of patient temperature; If the heart rate data display Heart Rate received is higher than 100 beats/min or lower than 60 beats/min, then monitoring management center pushes the warning message representing Heart Rate exception to user side.
Air velocity environmental parameter in ward environment temperature in calling data storehouse, monitoring management center, relative air humidity, ward and substitute into formula (1) calculate human comfort refer to ssd-EN number; Carry out grade classification according to the scope residing for Body Comfort Index ssd-EN and show division result;
ssd-EN＝(1.818T+18.18)(0.88+0.002f)+(T-30)/(42-T)-3.2v+16.2(1)
Wherein, T is the ward environment temperature monitored, and unit is DEG C; F is the ward air relative humidity monitored; V is air velocity in the ward that monitors, and unit is m/s; Be more than 90 divide 4 grades into by Body Comfort Index ssd-EN, 85-90 is divided into 3 grades, and 79-85 is divided into 2 grades, 70-79 is divided into 1 grade, and 59-70 is divided into 0 grade, and 50-58 is divided into-1 grade, 39-50 is divided into-2 grades, and 26-38 is divided into-3 grades, and <25 is divided into-4 grades.
The present invention is based on wireless sensor network, merged communication and monitored ward, its tool has the following advantages:
(1) overcome traditional wire ward monitoring system wiring trouble, cost is high, and power consumption is high, the deficiency of extensibility and transplantability difference.
(2) transmission range of traditional ward monitoring system is limited, data store difficulty, real-time understanding inconvenience, practicality is not strong, the invention provides the periodic detection of the state of an illness and environmental aspect, transmission, analysis preserving, extend transmission range by WiFi network and GPRS network, make doctor can long-range, according to data, real-time diagnosis is made to the state of an illness, improve the accuracy of diagnosis.
(3) traditional ward monitoring system data transfer mode is single, is easily interfered and breaks down, and the present invention adopts 2 kinds of different wireless transmission methods, adds survivability and the fail safe of system.
(4) in the present invention, the standard of the ward environment parameter monitored and setting can be compared judgement by automatic controller, controls the work such as air-conditioning, humidifier, blower fan, electric light, to improve ward environment parameter according to judged result.
(5) monitoring system data of monitoring in traditional ward are numerous and diverse, and cannot judge ward state intuitively, the present invention sets up evaluation model mechanism according to every environmental index, automatically carry out differentiating to the environmental index in ward and grade; Medical worker can carry out a series of Optimized Measures according to grading intuitively.
(6) monitoring management center can compare judgement to the patient temperature received and heart rate data, and pushes warning message to user, and user can process the emergency situations of patient in time according to warning message.
(7) data result that traditional ward monitoring system obtains can only be checked on computers, and the present invention adopts the mode of APP message push, information is sent to the mobile terminals such as the mobile phone of user and panel computer, makes medical care precess anywhere or anytime become possibility.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is the ward monitoring system structural representation based on wireless sensor network of the present invention.
Fig. 2 is terminal node structure chart in monitoring terminal.
Fig. 3 is ZigBee-WiFi gateway architecture figure.
Fig. 4 is workflow diagram of the present invention.
Fig. 5 is the flow chart of automatic controller.
Fig. 6 is the flow chart of monitoring information management platform warning function of the present invention.
Fig. 7 is the flow chart of monitoring information management platform query function of the present invention.
Fig. 8 is the flow chart of monitoring information management platform comprehensive assessment function of the present invention.
Embodiment
As shown in Figure 1, the ward monitoring system based on wireless sensor network of the present invention comprises monitoring terminal, ZigBee telegon, Zigbee-WiFi gateway module, ZigBee-GPRS gateway module, supervision and management center; Each terminal node periodically timing acquiring Monitoring Data in monitoring terminal, and data are sent to ZigBee telegon by wireless transmission method; The Monitoring Data that each terminal node gathers is gathered and is sent to Zigbee-WiFi gateway module and ZigBee-GPRS gateway module by wireless transmission method by ZigBee telegon; Zigbee-WiFi gateway module carries out the protocol conversion of Zigbee and WiFi to Monitoring Data, and Monitoring Data is sent to supervision and management center by WiFi network; ZigBee-GPRS gateway module carries out the protocol conversion of Zigbee and GPRS to Monitoring Data, and Monitoring Data is sent to supervision and management center by GPRS network; The Monitoring Data that supervision and management center receives Zigbee-WiFi gateway module and the transmission of ZigBee-GPRS gateway module is also stored in database, shows, analysis and treament be pushed to user side through Monitoring Data and analysis and treament result to Monitoring Data simultaneously.
Described monitoring terminal comprises multiple terminal node, and each terminal node structure is identical, comprises transducer group and radio frequency transceiving module, as shown in Figure 2.Transducer group comprises five class transducers, to light, carbon dioxide, electrocardio, body temperature, temperature and humidity etc. six item number according to gathering comparatively accurately.What the monitoring of ward environment temperature and humidity adopted is DHT11 humiture integral sensor; What the monitoring harmful gases such as carbon dioxide adopted is gas sensor MQ-2 transducer; What intensity of illumination monitoring adopted is photo resistance 5516; What measurement of bldy temperature transducer adopted is MEB13-503F-16L87 transducer; Heart rate measurement transducer have employed PulseSensor transducer.The CC2530 radio frequency transceiving module that radio frequency transceiving module adopts TI company to produce, the Monitoring Data that each transducer gathers by radio frequency transceiving module with wireless transmission to ZigBee telegon.
As shown in Figure 2, various kinds of sensors carries out accurate acquisition to environmental parameter and patient vital signs parameter.In radio frequency transceiving module, the external data that A/D modular converter is responsible for each transducer to transmit is sent in Single Chip Microcomputer (SCM) system and is processed, and is also a data channel; MCU processing module is the core of single-chip microcomputer, its function is to make Monitoring Data carry out preliminary screening assay and process, by data according to Zigbee protocol packing data frame, be transferred to ZigBee communication module by interface, then send to ZigBee telegon by ZigBee communication module with wireless transmission method.ZigBee is a kind of low-power consumption, low rate, high reliability, cheap, networking mode easily, and reaction speed is fast, can ensure the real-time monitoring to ward, and its coverage, reaching tens meters without during gain, meets the distance range of ward monitoring completely.
The CC2530 radio frequency transceiving module that described telegon part adopts TI company to produce, this wireless network is the wireless network based on ZigBee-network agreement.The nucleus module of ZigBee telegon aggregation node is Zigbee communication module, the intercommunication mutually that this module utilizes antenna and terminal node to carry out between data, comprise and receive from terminal node the supplemental characteristic monitored uploaded, send acquisition instructions to terminal node, ensure the normal data communication of carrying out with Zigbee-WiFi module.All the other also have central processing unit, memory module assists storage to data and process.In addition, the function of telegon also comprises networking and data receiver.
Gateway comprises a STM32F103RCT6 type single-chip microcomputer and ATK-RM04 serial ports WiFi module, SIM900a wireless communication module; STM32F103RCT6 type single-chip microcomputer and ATK-RM04 serial ports WiFi module form Zigbee-WiFi gateway module; STM32F103RCT6 type single-chip microcomputer and SIM900a wireless communication module composition ZigBee-GPRS gateway module.
The information mutual communication of sensor wireless network and WiFi network or GPRS network needs to utilize gateway, makes information format become the frame format of WiFi or GPRS in a gateway from the format conversion of ZigBee.The information that transducer is recorded by WiFi network or GPRS network by data message is afterwards sent to supervision and management center.
Supervision and management center; The information received is stored in database, each data message is shown simultaneously, comprehensive analysis and treament, various data are pushed to the portable equipment such as mobile phone, panel computer of user by the form of APP message simultaneously.
Be arranged on the monitoring terminal node with patient in ward, by each transducer to the environmental parameter in monitored area, ward, physical signs of patient parameter etc. carries out Real-Time Monitoring exactly, and adopt the wireless sensor network of ZigBee communication agreement the data collected to be sent to be arranged on outside ward (as corridor, the regions such as information desk on duty) Zigbee telegon, data message is sent to Zigbee-WiFi gateway module and ZigBee-GPRS gateway module by serial ports by Zigbee telegon, the data message received can be carried out data frame format conversion and protocol conversion by the single-chip microcomputer in gateway module, the display screen of single-chip microcomputer shows, and by serial ports WiFi module and SIM900a wireless communication module, the data message processed is sent to monitoring management center in real time, this data message of monitoring management receive centre carries out remote monitoring to ward environment parameter and physical signs of patient parameter, and by the data information memory that receives in database, each data message is shown simultaneously, comprehensive analysis and treament, various data message is pushed to the mobile phone of user by the form of APP message, the portable equipments such as panel computer, user is allowed to understand the state of ward and patient whenever and wherever possible.
Medical personnel can easily outside ward (as corridor, the regions such as information desk on duty) understand ward environment parameter and patient vital signs parameter, to succour the emergency situations of the patient in monitored area in time by the display screen at gateway module place; Monitoring management center also can be monitored ward environment parameter and patient vital signs parameter, in real time so that the medical personnel of total activation room inquire about simultaneously; The monitoring information of ward and patient is also sent to the mobile terminal such as mobile phone, panel computer of user by system by the form of APP message, make it can understand the working order of system whenever and wherever possible, facilitate the long distance monitoring of medical personnel.In addition, Body Comfort Index calculating and grading can also be carried out according to ward environment parameter in monitoring management center; Patient vital signs parameter compared with the normal parameter upper lower limit value of setting, when vital sign parameter is not in normal parameters, send warning message, user can process the emergency situations of patient in time according to warning message.
The present invention gathers mainly through the situation of different types of transducer to ward and patient, multiclass isomeric data accurately compiled among a small circle by ZigBee telegon and send, the Zigbee-WiFi gateway module that final arrival is long-range, ZigBee-GPRS gateway module carries out the reception process of isomeric data, the combination of ZigBee and WiFi, GPRS substantially prolongs the transmission range of data, improves fail safe and the survivability of system.System, by the foundation at monitoring management center, completes the mutual of data, simultaneously easy to use, ensure that the visual of system and practicality.Data message is sent to the mobile terminal such as mobile phone and panel computer of user, makes medical care precess anywhere or anytime become possibility.Add the evaluation that the physical signs of the data standard according to ward at data receiving terminal monitoring management center and patient is set up and controlling mechanism, can be vast hospital and patient provides higher-quality human nature service.
The information mutual communication of wireless sensor network and WiFi network or GPRS network needs to utilize gateway.As shown in Figure 3, the Sensor monitoring data message that ZigBee-WiFi gateway module is received by the ZigBee communication module of ZigBee telegon sends single-chip microcomputer (MCU module) to by serial ports, the frame format of data is become WiFi form from ZigBee format conversion by single-chip microcomputer, afterwards, data message adopts WiFi agreement and is sent to monitoring management center via WiFi network in WiFi module.The functional structure of ZigBee-GPRS gateway module is similar to ZigBee-WiFi gateway, is equally to be changed by data frame format, adopts GPRS agreement that data message is sent to monitoring management center via GPRS network simultaneously.
As shown in Figure 4, network set up by ZigBee telegon; Each terminal node search for networks in monitoring terminal, if can't find network, terminal node continues search; When after discovery network, the various kinds of sensors on terminal node carries out Real-time Collection exactly to the environmental parameter in monitored area, ward, vital sign patient parameters etc.; The data-signal collected is sent to the ZigBee telegon being arranged in (as corridor, regions such as information desks on duty) outside ward by terminal node; Data message is sent to Zigbee-WiFi gateway module and ZigBee-GPRS gateway module by serial ports by ZigBee telegon; The data message received can be carried out data frame format conversion and protocol conversion by the single-chip microcomputer in Zigbee-WiFi gateway module and ZigBee-GPRS gateway module, and the display screen of single-chip microcomputer shows; Gateway judges mobile network, if GPRS network can be used, then sends the data to monitoring management center by GPRS network, if WiFi network can be used, then sends the data to monitoring management center by WiFi network; The Monitoring Data of monitoring management receive centre gateway, is stored in database, and carries out comprehensive analysis and treament to data.
As shown in Figure 5, automatic controller compares judgement to the ambient temperature received, relative air humidity and dense carbon dioxide degrees of data; If ward environment normal temperature standard is 22 ~ 26 °, normal air RH range is 40% ~ 60%, and normal gas concentration lwevel is lower than 1000ppm, and normal ward intensity of illumination is not less than 55Lux, in ward, the time of having a rest is 22:00-7:00, and treatment time is 7:01-21:59; If the temperature data display ward temperature received is less than 22 ° or higher than 26 °, then automatic controller control air-conditioning is automatically opened and is carried out heating up or lowering the temperature, along with operation of air conditioner, ward environment temperature reduces gradually or raises, when ambient temperature is adjusted between 22 ~ 26 °, automatic controller controls air-conditioning and automatically cuts out, energy savings; If the relative air humidity data display ward air relative humidity pa received is lower than 40% simultaneously, then automatic controller control humidifier runs automatically, along with humidifier running, ward air relative humidity increases gradually, when relative air humidity increase to more than 60% time, automatic controller controls humidifier and automatically cuts out, energy savings; If the dense carbon dioxide degrees of data display ward environment gas concentration lwevel parameter received is higher than 1000ppm simultaneously, then automatic controller control blower fan runs automatically.Along with blower fan running, ward environment gas concentration lwevel reduces gradually, and when gas concentration lwevel is reduced to below 1000ppm, automatic controller controls blower fan and automatically cuts out, energy savings; Being 22:00-7:00 when the time of simultaneously reading from system, is patient's time of having a rest, then automatic controller controls electric light and cuts out, and is not bothered during to ensure patient's rest by light.Being 7:01-21:59 when the time, is treatment time, if the intensity of illumination data received are lower than 55Lux simultaneously, then automatic controller control electric light is opened, and is that ward increases brightness, when intensity of illumination is increased to more than 55Lux, automatic controller controls electric light and cuts out, energy savings.
As shown in Figure 6, the alarm module at monitoring management center compares judgement to the patient temperature received and heart rate data; If patient's regular temperature standard is less than 37 °, normal cardiac rate scope is 60 ~ 100 beats/min; If the temperature data display patient temperature received is higher than 37 °, then monitoring management center pushes warning message to user: " patient temperature is too high, please processes in time "; If the heart rate data display Heart Rate received is higher than 100 beats/min or lower than 60 beats/min, then monitoring management center pushes warning message to user: " Heart Rate is abnormal, please processes in time ".User can process the emergency situations of patient in time according to warning message.
As shown in Figure 7, ward that the enquiry module at monitoring management center inputs user number and sick bed number judge, if the number of input is non-existent, just no longer continue inquiry; If the number of input exists, just according to Entering Number, extract environmental parameter corresponding in database and vital sign patient parameters; Set up an interim list, comprise all Monitoring Data in list, these data are shown to user in table form; Because heart rate data requires to observe intuitively, heart rate data is shown more intuitively with the form of broken line graph; After user has read, the input of empty user, and close query function.
As shown in Figure 8, the overall merit function of monitoring information management platform for appointment ward, environmental parameter table corresponding in calling data storehouse, and extract data; In showing, data substitute into Body Comfort Index computing formula, calculate Body Comfort Index ssd-EN; Grade classification is carried out to the scope residing for Body Comfort Index.Body Comfort Index ssd-EN computing formula is formula (1).
ssd-EN＝(1.818T+18.18)(0.88+0.002f)+(T-30)/(42-T)-3.2v+16.2
(1)
Wherein, T is the ward environment temperature that this monitoring system monitors, and unit is DEG C; F is the ward air relative humidity that this monitoring system monitors; V is air velocity in the ward that monitors of this monitoring system, and unit is m/s.The present invention is directed to the temperature of China's the Northeast's environment and the situation of humidity, setting Body Comfort Index computing formula, carries out progressive operation.According to the value of comfort level ssd-EN, it is 9 grades by ward environment grade classification.Wherein divide 4 grades into by 90, represent that human body sensory is awfully hot, extremely inadaptable, reducing temperature of heatstroke prevention should be noted, in case heatstroke; 85-90 is divided into 3 grades, represents that human body sensory is hot, very uncomfortable, should be noted reducing temperature of heatstroke prevention; 79-85 is divided into 2 grades, represents human body sensory partial heat, uncomfortable, can suitably lower the temperature; 70-79 is divided into 1 grade, represent that human body sensory is partially warm, most people feel comparatively comfortable; 59-70 is divided into 0 grade, represents that human body sensory is the most comfortable, can accept; 50-58 is divided into-1 grade, and represent that human body sensory is slightly biased cool, major part is for feeling comparatively comfortable; 39-50 is divided into-2 grades, represents human body sensory colder (refrigerant), uncomfortable, please note warming; 26-38 is divided into-3 grades, represents that human body sensory is terribly cold, very uncomfortable, uncommon attention thermal insulation; <25 is divided into-4 grades, represents that human body sensory is cold, extremely inadaptable, uncommon attention thermal insulation, prevents frostbite.
Claims (9)
1. based on a ward supervisory control system for wireless sensor network, it is characterized in that comprising monitoring terminal, ZigBee telegon, Zigbee-WiFi gateway module, ZigBee-GPRS gateway module, supervision and management center; Monitoring terminal is arranged in ward, wherein each terminal node periodically timing acquiring Monitoring Data, and Monitoring Data is sent to ZigBee telegon by wireless transmission method; The Monitoring Data of monitoring terminal node collection gathers and is sent to Zigbee-WiFi gateway module and ZigBee-GPRS gateway module by wireless transmission method by ZigBee telegon; Zigbee-WiFi gateway module carries out the protocol conversion of Zigbee and WiFi to Monitoring Data, and Monitoring Data is sent to supervision and management center by WiFi network; ZigBee-GPRS gateway module carries out the protocol conversion of Zigbee and GPRS to Monitoring Data, and Monitoring Data is sent to supervision and management center by GPRS network; The Monitoring Data that supervision and management center receives Zigbee-WiFi gateway module and the transmission of ZigBee-GPRS gateway module is also stored in database, shows, analysis and treament Monitoring Data and analysis and treament result are pushed to user side to Monitoring Data simultaneously.
2. the ward supervisory control system based on wireless sensor network according to claim 1, is characterized in that in described monitoring terminal, each terminal node structure is identical, comprises transducer group and radio frequency transceiving module; Transducer group comprises ward environment parameter acquisition transducer and patient vital signs parameter acquisition transducer; The Monitoring Data of each transducer collection is sent to ZigBee telegon by radio frequency transceiving module.
3. the ward supervisory control system based on wireless sensor network according to claim 2, is characterized in that described environmental parameter pick-up transducers comprises humiture integral sensor, gas sensor and optical sensor; Patient vital signs parameter acquisition transducer comprises measurement of bldy temperature transducer and heart rate measurement transducer.
4. the ward supervisory control system based on wireless sensor network according to claim 3, is characterized in that the environmental parameter of ward number, sick bed number and correspondence and patient sign parameter are stored in database and are pushed to user side by described monitoring management center in table form; Draw broken line graph according to heart rate data simultaneously and this broken line graph is pushed to user side.
5. the ward supervisory control system based on wireless sensor network according to claim 3, is characterized in that described environmental parameter pick-up transducers also comprises air velocity transducer.
6. the ward supervisory control system based on wireless sensor network according to claim 1, is characterized in that Monitoring Data and analysis and treament result are pushed to user side by the mode of APP message by described supervision and management center.
7. the ward supervisory control system based on wireless sensor network according to claim 3, characterized by further comprising the automatic controller be arranged in ward, air-conditioning, humidifier, electric light and blower fan; Automatic controller is communicated with electric light with Zigbee-WiFi gateway module, ZigBee-GPRS gateway module, air-conditioning, humidifier, blower fan by wireless transmission method, receive ambient temperature, relative air humidity, gas concentration lwevel, the intensity of illumination data of Zigbee-WiFi gateway module or the transmission of ZigBee-GPRS gateway module, and control the opening and closing of air-conditioning, humidifier, blower fan and electric light respectively, to adjust ward environment parameter according to these data.
8. utilize the method monitored ward based on the ward supervisory control system of wireless sensor network as claimed in claim 7 as follows:
The standard of automatic controller to the ambient temperature received, relative air humidity, gas concentration lwevel, intensity of illumination data and setting compares judgement; If ward environment normal temperature standard is 22 ~ 26 °, normal air RH range is 40% ~ 60%, and normal gas concentration lwevel is lower than 1000ppm, and normal ward intensity of illumination is not less than 55Lux, in ward, the time of having a rest is 22:00-7:00, and treatment time is 7:01-21:59; If the temperature data display ward temperature received is less than 22 ° or higher than 26 °, then controls air-conditioning and automatically open and carry out heating up or lowering the temperature, when temperature is adjusted between 22 ~ 26 °, controls air-conditioning and automatically close; If the relative air humidity data display ward air relative humidity pa received is lower than 40%, then controls humidifier and automatically run, when relative air humidity increase to more than 60% time, control humidifier and automatically close; If the dense carbon dioxide degrees of data display ward environment gas concentration lwevel parameter received is higher than 1000ppm, then controls blower fan and automatically run, when gas concentration lwevel parameter is reduced to below 1000ppm, controls blower fan and automatically close; Be 22:00-7:00 when the time of simultaneously reading from system, then control electric light and close; Be 7:01-21:59 when the time, and the intensity of illumination received is lower than 55Lux, then controls electric light and open; When intensity of illumination is increased to more than 55Lux, controls electric light and close;
Monitoring management center compares judgement to the patient temperature received and heart rate data; If patient's regular temperature standard is less than 37 °, normal cardiac rate scope is 60 ~ 100 beats/min; If the temperature data display patient temperature received is higher than 37 °, then pushes to user side and represent the too high warning message of patient temperature; If the heart rate data display Heart Rate received is higher than 100 beats/min or lower than 60 beats/min, then push the warning message representing Heart Rate exception to user side.
9. utilize the method monitored ward based on the ward supervisory control system of wireless sensor network as claimed in claim 5 as follows:
Air velocity environmental parameter in ward environment temperature in calling data storehouse, monitoring management center, relative air humidity, ward and substitute into formula (1) calculate human comfort refer to ssd-EN number; Carry out grade classification according to the scope residing for Body Comfort Index ssd-EN and show division result;
ssd-EN＝(1.818T+18.18)(0.88+0.002f)+(T-30)/(42-T)-3.2v+16.2(1)
Wherein, T is the ward environment temperature monitored, and unit is DEG C; F is the ward air relative humidity monitored; V is air velocity in the ward that monitors, and unit is m/s; Be more than 90 divide 4 grades into by Body Comfort Index ssd-EN, 85-90 is divided into 3 grades, and 79-85 is divided into 2 grades, 70-79 is divided into 1 grade, and 59-70 is divided into 0 grade, and 50-58 is divided into-1 grade, 39-50 is divided into-2 grades, and 26-38 is divided into-3 grades, and <25 is divided into-4 grades.
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