CN111613346A

CN111613346A - Multi-person blood oxygen real-time monitoring system

Info

Publication number: CN111613346A
Application number: CN202010352451.7A
Authority: CN
Inventors: 张鑫; 张志勇; 杨*; 杨锘; 高艳鹏
Original assignee: Zhongkebokang Beijing Medical Equipment Co ltd; Casibrain Beijing Technology Co ltd
Current assignee: Zhongkebokang Beijing Medical Equipment Co ltd; Casibrain Beijing Technology Co ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2020-09-01

Abstract

The invention discloses a multi-person blood oxygen real-time monitoring system, which comprises a Hub cluster, a terminal server and terminal equipment, wherein the Hub cluster can be automatically paired and bound with a plurality of wireless blood oxygen head bands through a network and is used for acquiring blood oxygen data of a patient wearing the wireless blood oxygen head bands; the terminal server is used for synchronously receiving the blood oxygen data of the plurality of wireless blood oxygen head bands collected in the Hub cluster, obtaining the blood oxygen value of the patient wearing the wireless blood oxygen head bands through calculation, and the terminal equipment acquires the blood oxygen monitoring value and/or the trend curve of the corresponding patient in the terminal server in real time. The invention can realize the real-time monitoring of a plurality of patients, a plurality of doctors or nurses can browse the blood oxygen curves and numerical values monitored by a plurality of persons simultaneously or by a plurality of single persons and equipment simultaneously in real time, and historical data supports the generation of reports and fragments, so that the monitoring of a plurality of persons is more accurate, visual and personalized, the manual operation is greatly reduced, and the working efficiency is improved.

Description

Multi-person blood oxygen real-time monitoring system

Technical Field

The invention relates to the technical field of blood oxygen detection, in particular to a multi-person blood oxygen real-time monitoring system.

Background

In recent years, stroke patients are increasing due to aging population, change of dietary structure, high working pressure and the like. According to the Chinese stroke prevention and treatment report 2018, the number of people who suffer from stroke and have suffered from stroke at present in people over 40 years old in China is 1242 thousands, 70% of people who survive after the disease are injured and disabled to different degrees, and attention is paid to how to prevent and control the stroke.

The first step of preventing and controlling cerebral apoplexy is to monitor and intervene in time. It is understood that the cerebral blood oxygen saturation is the percentage reflecting the balance between oxygen consumption and oxygen supply of the brain tissue, is a key index of human brain physiological signals, and has important significance for clinical diagnosis and treatment. Data show that cerebral oxygen monitoring and timely intervention can reduce the incidence rate of cerebral apoplexy by 2% after cardiac surgery, namely, the number of patients suffering cerebral apoplexy is reduced from 25 to 5 in 1000 cases of operation patients.

At present, the blood oxygen monitoring of a patient adopts bedside equipment for monitoring, when a doctor is not in a ward of the patient, the blood oxygen index of the patient is difficult to monitor in real time, and the problem of untimely treatment caused by the fact that the condition that the patient has cerebral apoplexy is difficult to monitor in time is solved. Therefore, brain monitoring such as blood oxygen is a public undertaking worth of intensive research at home and abroad, and a complete set of monitoring scheme is established for hospitals, so that the brain disease is effectively prevented and treated, the prevention rate is improved, and the morbidity of patients is reduced.

Disclosure of Invention

The invention aims to solve the problems of poor mobility and inconvenient unified management of multiple persons in the conventional bedside monitoring, and provides a multi-person blood oxygen real-time monitoring system, which realizes mobile multi-person monitoring and single-person multi-device monitoring of blood oxygen parameters and improves the monitoring work efficiency of patients.

The invention adopts the following technical scheme:

a multi-person blood oxygen real-time monitoring system comprises a Hub cluster, a terminal server and terminal equipment, wherein the Hub cluster can be automatically paired and bound with a plurality of wireless blood oxygen head bands through a network and is used for acquiring blood oxygen data of patients wearing the wireless blood oxygen head bands, and the terminal server is respectively connected with the Hub cluster and the terminal equipment through the network; the terminal server is used for synchronously receiving the blood oxygen data of the plurality of wireless blood oxygen headband collected in the Hub cluster, and obtaining the blood oxygen value of the patient wearing the wireless blood oxygen headband through calculation, and the terminal equipment acquires the blood oxygen monitoring value and/or the trend curve of the corresponding patient in the terminal server in real time.

The system also includes a wireless controller connected to each of the Hub clusters and the terminal devices via a network.

Preferably, the wireless controller is a bluetooth AC controller, the Hub cluster is a bluetooth Hub cluster, and the wireless blood oxygen headband is a blood oxygen bluetooth headband.

Furthermore, a plurality of Bluetooth hubs are arranged in the Hub cluster, each Bluetooth Hub is authorized to be bound with a plurality of blood oxygen Bluetooth head bands, and the blood oxygen Bluetooth head bands are automatically paired and bound with one of the Bluetooth hubs in a nearby selection mode through Bluetooth.

The terminal server includes:

the blood oxygen calculating module is used for calculating the acquired blood oxygen data to obtain a blood oxygen value of the patient;

the parameter setting module is used for importing an authorization file granted by an enterprise official authority through the terminal equipment, configuring system use information and equipment information and setting Bluetooth AC controller configuration information;

the basic setting module is used for quickly maintaining information of a ward and a sickbed, and account, role and authority information;

the alarm setting module is used for setting the alarm high/low limit of the monitoring parameters, calculating the channel, the lead type and turning on or off the alarm switch and the alarm recording switch;

the device management module is used for managing the Bluetooth hubs in the system and the blood oxygen Bluetooth head bands connected under each Bluetooth Hub;

the personnel management module is used for carrying out information management on the inpatient;

and the real-time monitoring module is used for checking the information of the patient and checking a multi-equipment multi-parameter data curve and historical statistical data of the patient during monitoring in real time.

The alarm setting module comprises: the alarm setting module comprises: one or a combination of several of an rSO2 (cerebral blood oxygen saturation) setting module, an SpO2 (blood oxygen saturation) setting module, an ECG setting module, an RESP (respiratory frequency) setting module, an NIBP (non-invasive blood pressure) setting module and a body temperature setting module, and alarm threshold setting is carried out on the modules in the terminal server through the terminal equipment.

And the terminal server is also provided with a screen projection display module for displaying the monitoring curve of the patient in a full screen manner.

The system also comprises a database cluster and cache service module which is connected with the terminal server and used for storing the corresponding patient monitoring data processed by the terminal server and calling and checking the data through the terminal equipment.

The terminal equipment is a PC, a tablet personal computer or a mobile phone.

The Hub cluster, the terminal server, the terminal equipment and the wireless blood oxygen headband are connected through the same local area network.

The technical scheme of the invention has the following advantages:

A. the invention is a Bluetooth Hub monitoring system consisting of a single Bluetooth AC controller, a plurality of Bluetooth hubs and a plurality of blood oxygen Bluetooth head bands worn by a patient; the Bluetooth AC controller, the Bluetooth hubs and the blood oxygen Bluetooth headsets are connected under the same local area network, the Bluetooth hubs in the Bluetooth Hub cluster are distributed at different positions in a hospital area, and the blood oxygen Bluetooth headsets and the Bluetooth hubs can be automatically paired and bound nearby according to signal strength, so that a patient wearing the Bluetooth blood oxygen headsets can move in the hospital area, the Bluetooth hubs can transmit collected monitoring data of blood oxygen and the like of the patient to a terminal server in real time, the blood oxygen value of the patient wearing the blood oxygen Bluetooth headsets is obtained through calculation, and a doctor or a nurse can obtain the blood oxygen monitoring value and/or a trend curve of the corresponding patient in the terminal server in real time through terminal equipment.

B. In the using process, the system can be used for building and simulating the ward and patient environment of a hospital, so that the application scenes in the medical field are richer; through multiple settings such as user permission, monitoring parameter alarm numerical value, hardware pairing and the like, multiple doctors or nurses can browse blood oxygen curves and numerical values monitored by multiple persons or monitored by multiple single-person devices simultaneously in real time, historical data supports generation of reports and fragments, and printable reports and thermosensitive printing curve graphs enable monitoring of multiple persons to be more accurate, visual and personalized, manual operation is greatly reduced, and work efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention, the drawings which are needed to be used in the embodiments will be briefly described below, and it is apparent that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained from the drawings without inventive labor to those skilled in the art.

FIG. 1 is a diagram of the physical topology provided by the present invention;

FIG. 2 is a working diagram of Cassia RESTful APIs provided by the present invention;

FIG. 3 is a message queue service model provided by the present invention;

FIG. 4 is a concurrent client connectivity model provided by the present invention;

fig. 5 is a block diagram of modules included in the terminal server provided by the present invention.

The labels in the figure are as follows:

1-a wireless controller; 2-Hub cluster; 3-wireless blood oxygen headband; 4-a terminal device; 5-terminal server.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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 real-time monitoring system for blood oxygen of multiple persons, which includes a Hub cluster, a terminal server and a terminal device, wherein the Hub cluster is provided with a plurality of network routers, which can be distributed in hospital areas, the Hub cluster can be paired and bound with a plurality of wireless blood oxygen head bands for obtaining blood oxygen data of patients wearing the wireless blood oxygen head bands, and the terminal server is respectively connected with the Hub cluster and the terminal device through networks; the terminal server is used for receiving blood oxygen data of a plurality of patients collected in the Hub cluster, obtaining a blood oxygen value of the patient wearing the wireless blood oxygen headband through calculation, and the terminal equipment obtains the blood oxygen monitoring value and/or the trend curve of the corresponding patient in the terminal server in real time. The terminal equipment can be a PC, a tablet personal computer or a mobile phone used by medical personnel. Through setting up a plurality of Hub clusters in the academy, the messenger wears the patient of wireless blood oxygen bandeau and can walk about in academy activity area, patient's self blood oxygen data will be transmitted the Hub cluster in real time through the network, then transmit in real time and carry out data processing for terminal server, and transmit and give medical personnel, can realize the detection and the looking over of no accompanying and attending to blood oxygen data, medical personnel can handle to patient different situation, make severe patient's blood oxygen data high efficiency transmit in medical personnel terminal equipment, react its symptom condition, and obtain timely nursing.

In order to facilitate the effective management of a plurality of Hub clusters, the invention is also provided with a wireless controller for carrying out the setting management on each Hub. The adopted wireless controller is preferably a Bluetooth AC controller, the Hub cluster is preferably a Bluetooth Hub cluster, a plurality of Bluetooth routers are arranged in the Bluetooth Hub cluster, the wireless blood oxygen headband is preferably a blood oxygen Bluetooth headband, a Bluetooth headband developed by Koboku corporation can be used, a plurality of Bluetooth hubs are arranged in the Hub cluster, each Bluetooth Hub can be paired and bound with a plurality of blood oxygen Bluetooth headsets simultaneously, and the Bluetooth headsets can select the Bluetooth hubs to carry out Bluetooth connection and data transmission according to the positions of the Bluetooth hubs.

As shown in fig. 5, the terminal server in the present invention includes the following modules: the system comprises a blood oxygen calculation module, a parameter setting module, a basic setting module, an alarm setting module, an equipment management module, a personnel management module, a real-time monitoring module and a screen projection display module.

The blood oxygen calculating module is used for calculating the acquired blood oxygen data to obtain a blood oxygen value of the patient.

The parameter setting module can import an authorization file granted by an enterprise official by the terminal equipment and configure system use information and equipment information; and setting Bluetooth AC configuration information to complete the construction of the whole Bluetooth system.

The basic setting module can quickly maintain information of a ward and a sickbed, and account, role and authority information.

The alarm setting module can adjust the alarm high/low limit, the calculation channel, the lead type and other numerical values of the alarm setting module in real time according to different monitoring parameters, and can turn on or turn off the alarm switch and the alarm recording switch at any time.

The device management module can check the device conditions of the Bluetooth Hub and the Bluetooth headband, including information, state, electric quantity, signals and the like.

The personnel management module can provide rich search conditions, and the visualized distribution of sickbeds can directly see the real-time data display of the patient in the monitoring process, and can carry out operations such as editing, transferring and discharging on the patient.

The real-time monitoring module can check patient information, can check a multi-device multi-parameter data curve of a patient during monitoring in real time, and can also check historical statistical data of the patient.

The screen projection display module provides concise page tones and rich curve colors, supports sickbeds and patient data monitoring of all ward areas, and timely and effectively checks real-time data curves of patients in monitoring. Can carry out a plurality of shortcut operations such as alarming and muting, checking the details of the patient and the like.

The specific implementation method of each module is as follows:

the parameter setting module mainly comprises the following steps: and (4) importing an authorization file and setting Bluetooth equipment.

In the step of importing the authorization file, the authorization file is obtained from the Kocurio corporation, and then the file is imported through the terminal device, so that the import work of the authorization information and the authorization device can be completed.

Authorization information includes, but is not limited to, the following: authorization document version, hospital name, authorization code, contract date, after-market expiration date, authorization expiration date, and the like. Authorized devices include, but are not limited to, the following: device type, device number, serial number, MAC address, etc.

The authorized device list can be searched conditionally by device type, device number, serial number, MAC address. After the authorization file is successfully imported, the terminal server can identify the Bluetooth AC controller, the Bluetooth Hub and the authorized Bluetooth headband and perform subsequent operation.

In the bluetooth device setting step, the setting information includes, but is not limited to, the following: an IP address of the bluetooth AC controller, an AC developer account, an AC developer password, etc. After the information is set, an account test can be carried out, and if the test is successful, the communication between the Bluetooth Hub cluster and the terminal server is successful; if the test fails, it is checked whether the input information is consistent with the configuration information of the bluetooth AC controller.

The basic setting module comprises the following modules: the system comprises a yard setting module, an authority setting module and an account setting module.

In the yard setting module, the hospital and bed can be checked for change, and the name of the department can be modified. Adding a ward first, adding a bed in the ward, wherein batch adding operation can be adopted when the bed is added, and the setting information includes but is not limited to the following contents: start bed number, end bed number, prefix, suffix, number digits, and the like. For a well-established bed, the enabled state can be switched by a button.

In the permission setting module, a role list can be searched by role names and distributed account names, and a role starting state can be switched by buttons. The roles can be subjected to the operations of adding, deleting, modifying and checking, and the set contents include but are not limited to the following contents: role names, authority lists, etc.

In the account setting module, an account list can be searched through names, user names and roles, account information can be exported to an Excel form, or a template can be downloaded first and uploaded after being filled in, and batch addition operation is completed. And performing addition, deletion, modification and check operations on the account, wherein the set information includes but is not limited to: name, username, password, role, enablement status, etc. The account enablement status may be switched by a button.

The alarm setting module comprises the following modules: an rSO2 (cerebral blood oxygen saturation) setting module, an SpO2 (blood oxygen saturation) setting module, an ECG setting module, an RESP (respiratory rate) setting module, an NIBP (automatic non-invasive blood pressure) setting module and a body temperature setting module.

In the rSO2 setting module, the activation states of the alarm switch and the alarm recording switch can be switched through the buttons, and an rSO2 alarm high/low limit value and a PR alarm high/low limit value can be set.

In the SpO2 setting module, the activation states of the alarm switch and the alarm recording switch can be switched through the buttons, and an SpO2 alarm high/low limit value and a PR alarm high/low limit value can be set.

In the ECG setting module, the activation states of the alarm switch and the alarm recording switch can be switched through buttons, and the calculation channel type, the lead type and the alarm high/low limit value can be set.

In the RESP setting module, the starting states of an alarm switch and an alarm recording switch can be switched through a button, and an alarm high/low limit value and an alarm suffocation value can be set.

In the NIBP setting module, the starting states of an alarm switch and an alarm recording switch can be switched through buttons, and a systolic pressure alarm high/low limit value, an average pressure alarm high/low limit value and a diastolic pressure alarm high/low limit value can be set.

In the body temperature setting module, the starting states of the alarm switch and the alarm recording switch can be switched through the button, and the body temperature alarm high/low limit value can be set.

The above modules can all realize one-key restoration of default values.

The device management module may search the bluetooth device list by the device name. All the Bluetooth Hub information, the blood oxygen Bluetooth head band information connected under each Bluetooth Hub and the working state of the blood oxygen Bluetooth head band information can be browsed in the list, the equipment can be manually connected through the MAC ID, and the Bluetooth Hub with abnormal connection can be restarted by one key.

The personnel management module comprises personnel information management and hospitalization information management.

In the personnel information management, the personnel can be subjected to the operations of adding, deleting, modifying and checking, and the set information includes but is not limited to the following contents: hospital number, name, sex, date of birth, age, presence or absence of hospital stay, etc. The person list can be inquired according to the 7 search conditions of the name, the hospitalization number, the bed number, the age, the admission date, the discharge date and the creation date of the bed; the person list can be inquired according to 4 search conditions of name, hospital number, bed number and age.

In hospitalization information management, the set information includes, but is not limited to, the following: the ward, the bed number, the date of admission, diagnostic information, etc. The operation of transferring to bed, discharging and the like can be realized across the ward, and all the operations of entering/discharging can be recorded.

The real-time monitoring module comprises the following steps: binding equipment, starting monitoring, browsing historical data and printing a report.

In binding the equipment, accessible bed tab below button gets into certain personnel's real-time supervision page, according to bluetooth bandeau information, copies the serial number of certain equipment, pastes to monitoring page input frame in, can accomplish the operation of binding with personnel, or can pass through the equipment camera, sweep yard rifle and accomplish the operation of binding.

In the starting monitoring, a monitoring mode including a common mode and a sleep mode is selected, and if the sleep mode is selected, monitoring duration including unlimited time, 1 hour, 2 hours, 3 hours, 5 hours and 8 hours is selected. After the selection is finished, the start button is clicked, the monitoring can be started, and the real-time cerebral blood oxygen monitoring curve and the real-time cerebral blood oxygen monitoring numerical value can be seen after the monitoring is started.

In the process of browsing historical data, after monitoring is finished, the tab is switched to a historical review page of a certain person, and daily monitoring records including monitoring time, monitoring duration, a brain blood oxygen average value and a monitoring curve graph can be inquired through a calendar. For the graph, the curve segment can be cut and the picture saved by the button. The report can also be written by buttons, curve segments and report diagnosis information can be added in a report editing page, and a report in a PDF format can be generated after editing is completed. For reports, printing can be done via a normal printer; for curved segments, printing may be accomplished via a thermal printer.

The medical staff can be connected with the terminal server through the terminal equipment held by the medical staff, and data browsing and function setting are achieved.

The screen projection display module comprises the following steps: and starting a monitoring and switching screen projection page.

In the start monitoring, the binding of the device in the real-time monitoring module and the start monitoring setting need to be completed.

In the switching screen-casting page, a button arranged on the page is clicked to enter a full-screen monitoring page, a monitoring curve of people being monitored and arranged according to a bed can be seen in the page, and people can be switched at will in a display area.

The invention combines the wireless cerebral blood oxygen head band with the Bluetooth Hub, realizes the mobile monitoring of the wireless cerebral blood oxygen, and enriches the application scenes in the medical field. The invention can support monitoring by multiple persons and monitoring by multiple devices by one person, thereby greatly reducing manual operation and improving working efficiency. The invention adopts the local area network private environment deployment, so the customized development can be carried out according to the real requirements of different environments, and the customized environment has strong personalized attributes.

Establishment of Bluetooth Hub system

In order to make the multi-person monitoring system available, a bluetooth Hub architecture needs to be built.

Firstly, connecting a Cassia AC controller and a plurality of Cassia hubs to the same local area network, and then calling the Cassia hubs through encapsulated Cassia RESTful APIs to complete related business operations, wherein the working principle of the specific steps is shown in figure 2.

The first step is as follows: the business application initiates transmission of an OAuth authentication request (using developer credentials) to the Cassia AC controller.

The second step is that: once the authentication is successful, it will send a RESTful based HTTP query of Cassia AC.

The third step: cassia ACs send queries to the corresponding Cassia Hub via encrypted CAPWAP.

The fourth step: cassia Hub performs the query on BLE devices and passes the results back to Cassia AC.

The fifth step: and finally, transmitting the query result back to the business application program.

The connection between the Cassia Hub and the BLE device is automatically selected through signal strength, and has close relation with the placing angle of the Cassia Hub.

After the Cassia AC and Cassia Hub are deployed, the BLE device completes data interaction with the Cassia Hub through a BLE4.0 protocol. BLE is a standard that defines a range of communication protocols required for short-range, low-rate transmission rate wireless communication.

BLE has the following characteristics:

[ high reliability ]: fault-tolerant detection, correction, data coding and decoding, data noise addition and frequency hopping.

[ low cost, low power consumption ]: the intelligent machine has a double mode generally and a single mode generally. The single-mode chip is externally connected with a plurality of resistance-capacitance devices to form a filter circuit and a PCB antenna, and then the network node can be deployed. Compared with the traditional Bluetooth, the power consumption is reduced by 90%.

[ quick start, instantaneous connection ]: traditional bluetooth starts slowly, and version 2.1 starts and needs 6s, and BLE4.0 only needs 3ms, connects almost instantaneously.

[ high safety, large transmission distance ]: the AES-128CCM encryption algorithm was used. The traditional Bluetooth transmission distance is 2-10m, and the effective BLE4.0 transmission distance can reach 60-100 m.

[ Low Rate ]: the wireless control system has special requirements on the reliability and safety of data transmission, system power consumption and cost.

After the BLE device is started, the multi-person monitoring system receives broadcast information sent by the BLE device. { "dataType": scan "," ap ": CC:1B: E0: E0: FA:9C", "bdaddrs": [ { "bdaddr": "C8: DF:84:37: EA: EB", "bdaddrType": public "} ]," scanData ": 130942525331393233303732390000000000000005121400C800020A00", "name": BRS19230729"," rsi ": 57," evt _ type ":4}

And (4) calling RESTful APIs of Cassia AC to connect the BLE equipment, and completing pairing operation after connection is successful.

{"handle":"C8:DF:84:37:EA:EB","connectionState":"connected","dataType":"connection_state","ap":"CC:1B:E0:E0:FA:9C"}。

In order to meet the requirement of high-frequency acquisition, the multi-person monitoring system adopts an SSE communication protocol to receive the acquired data received by Cassia Hub.

The SSE specification is a component of the HTML5 specification, and is mainly composed of two parts: the first part is a communication protocol between the server side and the browser side, and the second part is an EventSource object which can be used by JavaScript in the browser. The communication protocol is a simple protocol based on plain text, and the type of the response content of the server side is 'text/event-stream'. The content of the response text can be regarded as an event stream, consisting of different events. Each event consists of both type and data, while each event may have an optional identifier. The contents of different events are separated by an empty line ("\ r \ n") containing only carriage returns and line feeds, and the data for each event may consist of multiple lines.

Based on the system, the SSE has the following advantages:

firstly, the method comprises the following steps: only a small amount of code is required to implement a complete service.

Secondly, the method comprises the following steps: can be used in existing services without the need to start a new service.

Thirdly, the method comprises the following steps: can be used in any kind of server language.

Fourthly: based on the HTTP/HTTPs protocol, it can directly run on existing proxy servers and authentication technologies.

With the advantages, the SSE is selected to be used, so that the cost of the system is saved greatly, and the operation efficiency of the system is greatly improved.

The SSE can obtain the collected data packet sent by the BLE device: { "dataType": notification "," ap ": CC:1B: E0: E0: FA:9C", "value": C6A34100BFFF00000E05FFFFFCFF00000E0576"," device ": C8: DF:84:37: EA: EB", "handle":51}

The value is single-packet data, and the battery capacity of the BLE equipment and the cerebral blood oxygen value of the monitoring personnel can be calculated through a formula obtained through continuous optimization.

Because the frequency of receiving data is very high in the using process of the multi-person monitoring system, the data storage work needs to be stable and efficient, and the normal use of a user and the normal operation of the system are not influenced, the invention adopts the Message queue service which realizes the AMQP (advanced Message Queuing protocol) advanced Message queue protocol.

There are three important concepts in the working mechanism of message queue services:

[ producers ]: and the creator of the message is responsible for creating and pushing data to the message server.

[ Consumer ]: and the message receiver is used for processing the data and confirming the message.

[ Agents ]: the message queue service is used for playing the role of express delivery, and the message queue service does not produce messages and only plays the role of express delivery.

Creating and destroying TCP sessions is a very expensive overhead for the operating system, and assuming there are thousands of connections per second during peak hours, each connection creates a TCP session, which results in a huge waste of TCP connections, and the TCP that the operating system can create per second is limited, thus quickly encountering a system bottleneck. In view of the above, the present invention introduces the concept of Channel (Channel), which not only meets the performance requirement, but also ensures the privacy of each connection.

As shown in fig. 3, a TCP connection is created between the multi-people monitoring system and the message queue service, once the TCP is opened and authenticated, the authentication is the message queue service connection information, the user name and the password sent before trying to connect the message queue service, compared with the connection database, there are two connection authentication methods using Java, and once the authentication is passed, the multi-people monitoring system and the message queue service create an AMQP Channel (Channel).

Channels are virtual connections created on "real" TCP, and AMQP commands are sent over channels, each channel having a unique ID, whether publish, subscribe, or introduce messages are done over the channel.

After each data packet is acquired through the SSE, the system can automatically place the data packet into a message queue to wait for a consumer to perform data processing and storage operations.

In the presence of high-frequency data, if the storage of data at each time is directly interacted with a database, the operation efficiency of the system is greatly reduced, and even the database is broken down due to overlarge pressure, so that the problem is solved by adopting a high-performance cache service.

The invention utilizes the cache service to pre-store and process data, the data segments in the message queue are put into the cache after being processed, and the data splicing processing is carried out, until the last data segment monitored at a certain time is processed, the data in the cache is synchronized into the database, thereby avoiding the data pressure caused by frequent access to the database.

The cache service of the invention adopts a single-thread mode, all data are in the memory, all operations are operations at the memory level (nanosecond), and the single thread avoids the problem of performance loss of multithread switching (context switching), thereby meeting the requirement of high performance.

As shown in fig. 4, the caching service of the present invention uses epoll to implement IO multiplexing, puts connection information and events into a queue, and in turn, puts the queue into a file event dispatcher, which distributes the events to event handlers, so that multiple concurrent client connections can be handled.

The caching service provides two persistence methods:

[ RDB Snapshot (snapshot) ]: by default, the in-memory database snapshot is saved in a binary file named dump. It may be arranged to automatically save the data set once in N seconds when the condition that the data set has at least M changes is met.

[ AOF (append-only file) ]: each instruction that is modified is recorded into the file and, after opening, each time a command to change the data SET is executed (e.g., SET), the command is appended to the end of the AOF file. In this way, when the cache service is restarted, the program can achieve the purpose of reconstructing the data set by re-executing the command in the AOF file, and also how often the data fsync is configured to be sent to the disk.

In view of the advantages and disadvantages of the two persistence modes, the invention is optimized to generate a new persistence option, namely mixed persistence.

When the AOF overwrites (AOF file may have too many useless instructions, so AOF will regularly generate AOF file according to the latest data of the memory), the content of the rdb snapshot file of the memory before this time is rewritten together with the command log file of the AOF modified memory data in increment, and both files are written into a new AOF file, the new file is not called appendoly.

AOF automatically rewrite in the background according to configuration rules, or manually execute command bgrewriteeaof rewrite AOF. Therefore, when the cache service is restarted, the rdb content can be loaded firstly, and then the incremental AOF log is replayed, so that the previous AOF full file can be completely replaced, and the restarting efficiency is greatly improved.

In order to prevent the situation of long-time network interruption, the invention also utilizes the timing task to synchronize the data in the cache, and when the time length of the automatic synchronization database exceeds 2 times, the multi-person monitoring system can automatically synchronize the data in the cache into the database, thereby preventing the loss of the monitoring data.

According to the method, the monitoring data are required to be displayed in real time on a plurality of pages, and the DOM elements in the original HTML text are continuously operated by using Javascript language according to normal development, so that the pages are refreshed, the operation consumes memory greatly, and the development cost is high.

The principle of real-time page refresh is mainly based on object. A data descriptor and an access descriptor.

Attributes are described by an access descriptor (which is a pair of getter/setter functions).

get a method that provides a getter to an attribute, and if there is no getter, returns undefined, which is called when the value of the attribute is obtained.

set: a method for providing a setter to an attribute accepts unique parameters. When called upon to reassign an attribute, a value of return is required to reassign the attribute, or else undefined is returned.

Through the standard specification, data needing to be refreshed in real time are hijacked, and then an object imitating a DOM structure is created according to a DOM structure object of a page needing to be refreshed. The following objects and DOM elements which are correspondingly required to be refreshed are converted into corresponding DOM structure objects according to DOM:

object to be refreshed

[ DOM elements requiring refreshing ]

[ Generation of objects corresponding to DOM structures ]

Translated core logic step function

First step, listening for changes in attributes in an object

Second, analyze DOM template structure

Thirdly, generating an object with an imitated DOM structure

And fourthly, after generating the object with the DOM imitation structure, traversing the array according to the createElement method of the native Javascript to generate a new DOM tree and rendering the DOM tree to a page. The method can monitor data, and after the data change, the data of all changes can be refreshed at the same time by rendering once, so that the repeated operation of DOM is greatly reduced, and the program performance and the development efficiency are improved.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.

Claims

1. A multi-person blood oxygen real-time monitoring system is characterized by comprising a Hub cluster (2), a terminal server (5) and a terminal device (4), wherein the Hub cluster (2) can be automatically paired and bound with a plurality of wireless blood oxygen head bands (3) through a network and is used for acquiring blood oxygen data of a patient wearing the wireless blood oxygen head bands (3), and the terminal server (5) is respectively connected with the Hub cluster (2) and the terminal device (4) through the network; the terminal server (5) is used for synchronously receiving the blood oxygen data of the plurality of wireless blood oxygen headband (3) collected in the Hub cluster (2), and obtaining the blood oxygen value of the patient wearing the wireless blood oxygen headband (3) through calculation, and the terminal device (4) acquires the blood oxygen monitoring value and/or the trend curve of the corresponding patient in the terminal server (5) in real time.

2. Multi-person blood oxygen real-time monitoring system according to claim 1, characterized in that said system further comprises a wireless controller (1) connected to each of said Hub clusters (2) and terminal devices (4) via a network.

3. The real-time multi-person blood oxygen monitoring system according to claim 2, wherein said wireless controller (1) is a bluetooth AC controller, said Hub clusters are bluetooth Hub clusters, and said wireless blood oxygen headband is a blood oxygen bluetooth headband.

4. The real-time multi-person blood oxygen monitoring system according to claim 3, wherein a plurality of Bluetooth hubs are provided in said Hub cluster (2), each of said Bluetooth hubs is authorized to have a plurality of blood oxygen Bluetooth headsets, and said blood oxygen Bluetooth headsets are automatically paired and bound with one of said Bluetooth hubs in a nearby selective manner through Bluetooth.

5. The real-time multi-person blood oxygen monitoring system of claim 4, wherein the terminal server comprises:

the blood oxygen calculating module is used for calculating the acquired blood oxygen data to obtain a blood oxygen value;

6. The real-time multi-person blood oxygen monitoring system according to claim 5, wherein said alarm setting module comprises: one or a combination of several of an rSO2 (cerebral blood oxygen saturation) setting module, an SpO2 (blood oxygen saturation) setting module, an ECG setting module, an RESP (respiratory frequency) setting module, an NIBP (non-invasive blood pressure) setting module and a body temperature setting module, and alarm threshold setting is carried out on the modules in the terminal server through the terminal equipment.

7. The real-time multi-person blood oxygen monitoring system of claim 6, wherein the terminal server further comprises a screen projection display module for displaying the monitoring curve of the patient in a full screen.

8. The system of claim 1, further comprising a database cluster and cache service module connected to said terminal server for storing the corresponding patient monitoring data processed by said terminal server and retrieving and viewing the data through said terminal device.

9. The real-time multi-person blood oxygen monitoring system of claim 1, wherein the terminal device is a PC, a tablet PC or a mobile phone.

10. Multi-person blood oxygen real-time monitoring system according to any of the claims 1 to 9, characterized in that the Hub cluster (2), the terminal server (5), the terminal device (4) and the plurality of wireless blood oxygen headband (3) are connected through the same local area network.