CN111968318A - Mobile nursing system and method - Google Patents
Mobile nursing system and method Download PDFInfo
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- CN111968318A CN111968318A CN202010794133.6A CN202010794133A CN111968318A CN 111968318 A CN111968318 A CN 111968318A CN 202010794133 A CN202010794133 A CN 202010794133A CN 111968318 A CN111968318 A CN 111968318A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
- G08B21/0272—System arrangements wherein the object is to detect exact location of child or item using triangulation other than GPS
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
- G08B21/028—Communication between parent and child units via remote transmission means, e.g. satellite network
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
- G08B3/1008—Personal calling arrangements or devices, i.e. paging systems
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H40/00—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices
- G16H40/60—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices
- G16H40/67—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for remote operation
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
- G16Y10/00—Economic sectors
- G16Y10/60—Healthcare; Welfare
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
- G16Y20/00—Information sensed or collected by the things
- G16Y20/10—Information sensed or collected by the things relating to the environment, e.g. temperature; relating to location
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
- G16Y30/00—IoT infrastructure
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
- G16Y40/00—IoT characterised by the purpose of the information processing
- G16Y40/10—Detection; Monitoring
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
- G16Y40/00—IoT characterised by the purpose of the information processing
- G16Y40/30—Control
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
- G16Y40/00—IoT characterised by the purpose of the information processing
- G16Y40/60—Positioning; Navigation
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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
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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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
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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
- H04L67/52—Network services specially adapted for the location of the user terminal
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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
Abstract
The embodiment of the invention discloses a mobile nursing system, which comprises a main control unit based on a PLC (programmable logic controller) and an I/O (input/output) module thereof, a monitoring module based on WinCC (Windows communication control) configuration technology and a monitoring host communicated with the main control unit and the monitoring module in real time, wherein the calling state of the port of the I/O module is read in the main control unit in a cyclic scanning mode through the PLC, a signal end of the PLC is connected with a cloud computing server through a wireless sensing network, a signal end of the cloud computing server is connected with the monitoring host through the wireless sensing network, a signal end of the monitoring host receives field equipment state change data from the PLC in real time through a wireless network, and the positioning accuracy is improved by adopting a wireless network and RSSI (received signal strength indicator) ranging positioning method, so that the information islanding problem of the traditional nursing calling system can be effectively changed, a novel nursing service mode is provided, so that people can enjoy more convenient medical nursing service.
Description
Technical Field
The embodiment of the invention relates to the technical field of medical care systems, in particular to a mobile care system and a mobile care method.
Background
With the rapid development of the medical career in China, the demand of people on health is increasing day by day. The continuous deepening of the informatization construction of the medical industry makes medical workers and patients put higher requirements on the convenience of medical services, due to the competitive relationship and the safety requirement on data in the medical industry, an information isolated island phenomenon is generated in the informatization construction process of the industry, a nursing calling system is used as an important part in the informatization construction of hospitals, and the following defects exist in the aspects of hardware realization of intelligent calling and signal real-time communication:
(1) the hospital wards are more, patients are more intensive, network resources are limited, the requirement of the existing intelligent calling system for real-time monitoring of the patients in the hospital wards is difficult to achieve, and when the patients have problems, medical staff cannot obtain rescue information in the first time, so that certain difficulty is brought to treatment.
(2) Most of the existing nursing calling systems are connected by an internal network and are externally closed, if the traditional nursing calling systems are directly transplanted to a basic layer, the huge waste of medical resources is caused, the real-time performance of calling information of patients is poor, the doctors cannot know the conditions of the patients at the first time, and the time for the medical staff to patrol the wards is prolonged.
Disclosure of Invention
Therefore, the embodiment of the invention provides a mobile nursing system and a mobile nursing method, which are used for solving the problems that medical staff cannot obtain rescue information in the first time, the burden of the medical staff on patrolling a ward is increased and the like when a patient has problems due to limited network resources and poor portability of an intelligent nursing system in the prior art.
In order to achieve the above object, an embodiment of the present invention provides the following:
a movable nursing system comprises a main control unit based on a PLC (programmable logic controller) and an I/O (input/output) module thereof, a monitoring module based on a WinCC (Windows CC) configuration technology and a monitoring host communicated with the main control unit and the monitoring module in real time, wherein the main control unit is internally provided with a data pushing module through which an I/O module port calling state is read by the PLC in a cyclic scanning mode, a signal end of the PLC is connected with a cloud computing server through a wireless sensing network, the signal end of the cloud computing server is connected with the monitoring host through the wireless sensing network, and the signal end of the monitoring host receives field equipment state change data from the PLC in real time through a wireless network and stores the field equipment state change data in a database inside the cloud computing server.
The signal end of the main control unit is connected with the mobile terminal through a wireless sensing module, the position of the mobile terminal is detected in real time by adopting an RSSI ranging algorithm in the main control unit, and the priority of the mobile terminal is determined through a limited coordination algorithm.
And the RSSI ranging algorithm calculation result is fed back to the monitoring host and is synchronized to the cloud computing server, and the cloud computing server stores related data by adopting an SQL-Azure storage framework and requests to send the related data to a corresponding partition server.
And the control end of the partition server is connected with the mobile terminal of each partition through a wireless network.
A method for calling a mobile care system, comprising the steps of:
s01, executing the processing flow of the call state information read by the PLC according to the internal protocol stack structure of the control unit;
s02, acquiring a signal intensity value of the mobile terminal according to the event response task executed by the protocol stack;
s03, calculating the distance between two points through the RSSI mobile terminal signal strength value by using the RSSI ranging algorithm;
and S04, executing the relevant process according to the distance data signal and the priority judged by the finite coordination algorithm.
As a preferred scheme of the present invention, the protocol stack structure processing flow is as follows:
firstly, initializing internal call state data information of a control unit, and transmitting the internal call state data information from a high layer to a bottom layer according to a Z-Stack protocol structure layer;
secondly, judging whether an event occurs according to the call state data information and a control instruction of the PLC;
and finally, executing the related tasks according to the event response priority.
As a preferred scheme of the present invention, the event response priority is judged by a limit coordination algorithm, and the steps are as follows:
firstly, a wireless sensing network is constructed according to data information monitored by the control unit, the monitoring host and the cloud computing server;
secondly, receiving data packets from different mobile terminals, extracting a signal intensity value, and uploading the signal intensity value to a monitoring host computer in a serial port communication mode;
and finally, processing the data information through an RSSI ranging algorithm according to the signal strength value provided by the monitoring host to acquire distance information.
As a preferred scheme of the present invention, the RSSI ranging algorithm locates the mobile terminal by combining the signal strength value provided by the monitoring host, and the steps are as follows:
firstly, calculating a coordinate approximate point according to regional information provided by a monitoring host through a wireless sensor network;
secondly, calculating a final blind node coordinate by using a coordinate approximate point through a trilateration method, constructing three anchor nodes with fixed coordinates around the blind node, and drawing a circle by taking the distance between the blind node and the anchor nodes as a radius;
and finally, judging the number of intersection points between the anchor node circles, and repeating the operation by taking the intersection points as approximate points.
As a preferable scheme of the invention, a vertical line of straight lines of two circle centers is made between the anchor node circle intersection points to obtain the blind node position.
As a preferable scheme of the invention, the blind node positions are on a vertical line and are determined by a vertical line weight.
The embodiment of the invention has the following advantages:
the invention is a mobile nursing system and method based on wireless network and RSSI ranging location, which constructs a network by wireless network nodes, sets a wireless calling system of a mobile terminal and a monitoring host machine into two mutually independent parts, carries out coordinate calculation on data to be located sent by the mobile terminal through a calling end and stores position information, utilizes a monitoring center as a called end matched with the nearest geographic position, adopts a positioning method based on RSSI ranging and a trilateration method to reduce the error caused by the RSSI ranging by environmental factors, improves the positioning precision, can effectively change the information isolated island problem of the traditional nursing calling system, provides a novel nursing service mode, and enables people to enjoy more convenient medical nursing service.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a block diagram of a mobile care system according to an embodiment of the present invention;
fig. 2 is a flowchart of a calling method of a mobile care system according to an embodiment of the invention.
In the figure:
1-a main control unit; 2-a PLC controller; 3-a monitoring module; 4-monitoring the host computer; 5-a cloud computing server; 6-a database; 7-a data push module; 8-a partitioned server; 9-mobile terminal.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present invention provides a mobile nursing system, which introduces a mobile terminal with mobile calling and personnel positioning functions by using a wireless sensor network, realizes the method of positioning the position information of medical personnel by selecting a base station with the strongest access signal in a channel polling manner, realizes mobile calling and personnel positioning management by relying on the mobile terminal, realizes flexible communication between the mobile terminals, realizes the identification of patients and the positioning of medical personnel, and further realizes the management of patients and medical personnel.
The monitoring system comprises a main control unit 1 based on a PLC (programmable logic controller) 2 and an I/O (input/output) module thereof, a monitoring module 3 based on a WinCC (Windows communication control) configuration technology and a monitoring host 4 in real-time communication with the main control unit 1 and the monitoring module 3, wherein the calling state of an I/O module port is read in a cyclic scanning mode through the PLC 2 in the main control unit 1, a signal end of the PLC 2 is connected with a cloud computing server 5 through a wireless sensing network, a data pushing module 7 is arranged in the cloud computing server 5, the signal end of the cloud computing server 5 is connected with the monitoring host 4 through the wireless sensing network, and the signal end of the monitoring host 4 receives field equipment state change data from the PLC 2 in real time through a wireless network and stores the field equipment state change data in a database 6 in the cloud computing server 5.
In this embodiment, the monitoring system using the PLC control technology and the WinCC configuration technology constructs an intelligent calling system inside the medical care ward, and uses reliable control, convenient operation, real-time monitoring, stable communication, and the like as main indexes, thereby implementing a new system with rich functions, convenient use and installation, and meeting the requirements of modern medical treatment.
In this embodiment, the main control unit 1 is mainly based on the PLC controller 2 and the I/O module thereof, and performs circuit connection with a ward, a nurse station, and an expert consultation center to achieve a control requirement of an emergency call in the ward, the monitoring module 3 is mainly based on the WinCC configuration technology, and achieves real-time dynamic information of a hospital bed call in different ward areas through monitoring software programming and interface configuration, and the control system and the detection system are connected to the monitoring host 4 through different communication signals to perform information exchange.
The signal end of the main control unit 1 is connected with the mobile terminal 9 through a wireless sensing module, the position of the mobile terminal 9 is detected in real time by the RSSI ranging algorithm in the main control unit 1, and the priority of the mobile terminal 9 is determined through a limited coordination algorithm.
In this embodiment, the PLC controller 2 of the main control unit 1 receives an input signal from a peripheral device through the I/O module, and refreshes the state of the input mapping register, so as to perform control logic operation according to the program control requirement written by the monitoring host connected via the network, and simultaneously refresh the patient call state of the monitoring host in real time, and drive the corresponding action of the external device through the output interface circuit of the I/O module, and display the corresponding action state on the monitoring host 4 in real time.
And the calculation result of the RSSI ranging algorithm is fed back to the monitoring host 4 and is synchronized to the cloud computing server 5, and the cloud computing server 5 stores related data by adopting an SQL-Azure storage framework and requests to send the data to the corresponding partition server 8.
And the control end of the partition server 8 is connected with the mobile terminal 9 of each partition through a wireless network.
In this embodiment, the cloud computing server 5 transmits the data in the SQL-Azure storage framework to the partition server 8 through the data pushing module 7 in a round robin query manner.
In this embodiment, the data pushing module 7 adopts a database form based on SQL-Azure, and may directly access the generated report through the URL, and when the user needs to locally backup the cloud database, the user may use a synchronization function to perform backup.
As shown in fig. 2, a mobile care method includes the steps of:
s01, executing the processing flow of the call state information read by the PLC according to the internal protocol stack structure of the control unit;
s02, acquiring a signal intensity value of the mobile terminal according to the event response task executed by the protocol stack;
s03, calculating the distance between two points through the RSSI mobile terminal signal strength value by using the RSSI ranging algorithm;
and S04, executing the relevant process according to the distance data signal and the priority judged by the finite coordination algorithm.
In the embodiment, a wireless sensor network is adopted to carry out mass data communication in various environments, the coordinator equipment and the mobile terminal are used for judging data in a data packet according to the signal intensity value, the limited coordination algorithm is used for judging the priority of a calling event, and the mobile terminal is used for making corresponding feedback.
The protocol stack structure processing flow is as follows:
firstly, initializing internal call state data information of a control unit, and transmitting the internal call state data information from a high layer to a bottom layer according to a Z-Stack protocol structure layer;
secondly, judging whether an event occurs according to the call state data information and a control instruction of the PLC;
and finally, executing the related tasks according to the event response priority.
In this embodiment, after entering the event round robin query operation, the protocol Stack structure waits for a test packet from another device, and once the test packet is received, the test packet is first analyzed, and then a signal strength value is extracted from the data packet.
The event response priority is judged by a limit coordination algorithm, and the steps are as follows:
firstly, a wireless sensing network is constructed according to data information monitored by the control unit, the monitoring host and the cloud computing server;
secondly, receiving data packets from different mobile terminals, extracting a signal intensity value, and uploading the signal intensity value to a monitoring host computer in a serial port communication mode;
and finally, processing the data information through an RSSI ranging algorithm according to the signal strength value provided by the monitoring host to acquire distance information.
The RSSI ranging algorithm is combined with the signal strength value provided by the monitoring host to position the mobile terminal, and the steps are as follows:
firstly, calculating a coordinate approximate point according to regional information provided by a monitoring host through a wireless sensor network;
secondly, calculating a final blind node coordinate by using a coordinate approximate point through a trilateration method, constructing three anchor nodes with fixed coordinates around the blind node, and drawing a circle by taking the distance between the blind node and the anchor nodes as a radius;
and finally, judging the number of intersection points between the anchor node circles, and repeating the operation by taking the intersection points as approximate points.
In this embodiment, the mobile terminal is mainly configured to apply for joining a wireless sensor network created by the coordinator, and then periodically send test data to the coordinator in a point-to-point communication manner.
And making a vertical line of straight lines of the centers of the two circles between the anchor node circle intersection points to obtain the position of the blind node.
In this embodiment, when one blind node has three working circles using the anchor node as the center of a circle and the distance between the anchor node and the blind node as the radius, two of the working circles may be combined into three pairs of circles, and the positional relationship between one pair of the circles is as follows: intersection and non-intersection, the invention respectively calculates the approximate point of each pair of circles according to the two position relations: when two circles intersect each other, there may be one, or two, intersections of the two circles. If there is only one, the intersection will be the approximate point of the two circles; if the number of the intersection points is two, the two intersection points are screened by using the circle center position of the third anchor node, and a point close to the circle center of the third anchor node is determined as an approximate point; when two circles do not intersect each other, two special cases are equally distinguished: the two circles are both outside the other circle, one circle is inside the other circle, firstly, the circle centers of the two circles are used as a connecting line, the straight line and the circle have two pairs of intersection points, one pair of intersection points on the side closer to the two circles is selected, the intersection points are used in the subsequent approximate point calculation process, and the approximate point is calculated according to the similar triangular relation.
The blind node position is on a vertical line and is determined by a vertical line weight.
In this embodiment, three straight lines may intersect at one point or intersect two by two to form three intersection points, and if the three straight lines intersect at one point, the point is regarded as the final coordinate of the blind node; if there are three intersection points, we add a weight to each intersection point in order to determine the final coordinates, and the weight of the intersection points is defined as follows:
first, the weight of a vertical line is determined, each vertical line is determined by two circles, and assuming that the radii of the two circles are r _1 and r _2, respectively, the weight of the vertical line i is:
ω_i＝1/(r_1r_2)
secondly, setting vertical lines passing through the three approximate points as l _1, l _2 and l _3 respectively, setting the intersection point of l _1 and l _2 as p _1, the intersection point of l _1 and l _3 as p _2, and the intersection point of l _2 and l _3 as p _3, then setting the weight of p _1 as ω _1 ω _2, and the weight of the other two intersection points can be determined in the same way, and after the weight of each intersection point is determined, the final coordinate of the blind node can be determined.
In the embodiment, the error of the RSSI ranging caused by the environmental factors is reduced by adopting a method for estimating the regional environment weight in real time, and the distance between the blind node and the anchor node is measured by adopting a trilateration method, so that all possible situations caused by the ranging error can be effectively processed, and the positioning precision is improved.
In the embodiment, a network is established by a wireless network node, the node and the node communicate in a wireless mode, a wireless calling system of a mobile terminal and a monitoring host is set as two mutually independent parts, the position of a calling end is set as an anchor node, a receiving end is set as a calling response node, a calling monitoring module carries out coordinate calculation on to-be-positioned data sent by a blind node and stores position information, the blind node is worn on a called end, the anchor node is used as a main calling end to send calling request information to a calling monitoring center, the monitoring center is the called end with the closest matching geographic position, and the main calling information is sent to the called end meeting requirements.
The mobile nursing system and method based on the wireless network and the RSSI ranging positioning are characterized in that a network is built by wireless network nodes, a wireless calling system of a mobile terminal and a monitoring host is set into two mutually independent parts, coordinate calculation is carried out on data to be positioned sent by the mobile terminal through a calling end and position information is stored, a monitoring center is used for matching a called end with the nearest geographic position, errors caused by environmental factors to the RSSI ranging are reduced by adopting a positioning method based on the RSSI ranging and a trilateration method, the positioning precision is improved, the information island problem of the traditional nursing calling system can be effectively changed, a novel nursing service mode is provided, and people can enjoy more convenient medical nursing services.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. A mobile nursing system is characterized by comprising a main control unit (1) based on a PLC (programmable logic controller) and an I/O (input/output) module thereof, a monitoring module (3) based on WinCC configuration technology and a monitoring host (4) in real-time communication with the main control unit (1) and the monitoring module (3), wherein the calling state of the port of the I/O module is read in the main control unit (1) in a cyclic scanning mode through the PLC (2), the signal end of the PLC (2) is connected with a cloud computing server (5) through a wireless sensing network, a data pushing module (7) is arranged in the cloud computing server (5), the signal end of the cloud computing server (5) is connected with the monitoring host (4) through the wireless sensing network, and the signal end of the monitoring host (4) receives the state change data of field equipment from the PLC (2) in real time through a wireless network, and stored in a database (6) inside the cloud computing server (5).
2. A mobile nursing system according to claim 1, characterized in that the signal end of the main control unit (1) is connected to the mobile terminal (9) through a wireless sensing module, the inside of the main control unit (1) adopts RSSI ranging algorithm to detect the position of the mobile terminal (9) in real time and determines the priority of the mobile terminal (9) through finite coordination algorithm.
3. A mobile nursing system according to claim 2, wherein the RSSI ranging algorithm calculation result is fed back to the monitoring host (4) and synchronized to the cloud computing server (5), and the inside of the cloud computing server (5) adopts SQL-Azure storage architecture to store relevant data and request to send to the corresponding partition server (8).
4. A mobile care system according to claim 3, characterized in that the control end of the zone server (8) is connected to the mobile terminals (9) of each zone via a wireless network.
5. A mobile care method, comprising the steps of:
s01, executing the processing flow of the call state information read by the PLC according to the internal protocol stack structure of the control unit;
s02, acquiring a signal intensity value of the mobile terminal according to the event response task executed by the protocol stack;
s03, calculating the distance between two points through the RSSI mobile terminal signal strength value by using the RSSI ranging algorithm;
and S04, executing the relevant process according to the distance data signal and the priority judged by the finite coordination algorithm.
6. A mobile nursing method according to claim 5, characterized in that the protocol stack structure processing flow is as follows:
firstly, initializing internal call state data information of a control unit, and transmitting the internal call state data information from a high layer to a bottom layer according to a Z-Stack protocol structure layer;
secondly, judging whether an event occurs according to the call state data information and a control instruction of the PLC;
and finally, executing the related tasks according to the event response priority.
7. A mobile care method according to claim 6, wherein the event response priority is determined by a threshold coordination algorithm, comprising the steps of:
firstly, a wireless sensing network is constructed according to data information monitored by the control unit, the monitoring host and the cloud computing server;
secondly, receiving data packets from different mobile terminals, extracting a signal intensity value, and uploading the signal intensity value to a monitoring host computer in a serial port communication mode;
and finally, processing the data information through an RSSI ranging algorithm according to the signal strength value provided by the monitoring host to acquire distance information.
8. The mobile nursing method of claim 7, wherein the RSSI ranging algorithm is used to locate the mobile terminal in combination with the signal strength value provided by the monitoring host, and the steps are as follows:
firstly, calculating a coordinate approximate point according to regional information provided by a monitoring host through a wireless sensor network;
secondly, calculating a final blind node coordinate by using a coordinate approximate point through a trilateration method, constructing three anchor nodes with fixed coordinates around the blind node, and drawing a circle by taking the distance between the blind node and the anchor nodes as a radius;
and finally, judging the number of intersection points between the anchor node circles, and repeating the operation by taking the intersection points as approximate points.
9. A mobile point of care method according to claim 8 wherein the blind node location is obtained by making a perpendicular to the straight line between the anchor node circle intersections.
10. A mobile care method according to claim 9, wherein the blind node locations are on a vertical line and have a vertical line weight determined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010794133.6A CN111968318A (en) | 2020-08-10 | 2020-08-10 | Mobile nursing system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010794133.6A CN111968318A (en) | 2020-08-10 | 2020-08-10 | Mobile nursing system and method |
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| Publication Number | Publication Date |
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| CN111968318A true CN111968318A (en) | 2020-11-20 |
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