Background
Hand hygiene is a generic term for hand washing, hand hygiene and surgical hand hygiene. The hospital is provided with qualified hand washing and sanitary hand sterilizing facilities, and each department is provided with running water and hand washing liquid, and major departments such as an operating room, a catheter room, an intensive care unit, an obstetric room, a neonatal room, a hemodialysis room, an infectious disease department, an stomatology department, a sterilizing supply center and the like are provided with non-hand-touch tap switches. Meanwhile, qualified quick-drying hand sanitizers, hand drying articles or facilities such as disposable toilet paper, hand dryers and the like are required to be provided, and secondary pollution is avoided.
Hand hygiene management has the following indications and execution methods:
1. finger washing indication medical staff should wash his hands in the following cases
Before contacting a patient, including when moving from a contaminated site to a clean site on the same patient's body, before aseptic manipulation, after contacting the patient's body fluids, after contacting the patient's environment, before and after putting on and taking off the barrier, after picking up gloves, before handling medications or meals, etc.
2. Hand disinfection indication medical staff should be hand disinfected in the following cases
Before examination, treatment and nursing of patients with hypoimmunity, before and after major departments such as ICU and isolation ward, after contacting with infectious body fluid and its environment and articles, both hands are required to maintain long-term antibacterial activity.
3. Surgical hand disinfection, in which hand washing and then disinfection should be performed when surgical hand is disinfected. Surgical hand sterilization should be re-performed between different patient surgeries, when gloves are broken or hands become contaminated.
4. The hand washing and disinfecting method ensures the hand washing and disinfecting effect by medical staff according to the hand washing and disinfecting method, steps and time requirements of medical staff hand hygiene Specification.
The traditional hand hygiene management method is mainly manually supervised or supervised by adopting fixed equipment, but the fixed supervision mode has the following management defects:
firstly, the medical staff working in key departments are monitored for disinfection effect in monthly by the infection management department, and when the outbreak of hospital infection is suspected to be related to hand sanitation of the medical staff, the medical staff should be monitored in time and the corresponding pathogenic microorganisms should be monitored. This can require frequent patient access or treatment areas for the healthcare staff, at which time the system may trigger excessive ineffective reminders, resulting in a reminder fatigue.
Secondly, the traditional hand hygiene management method cannot track the position and the behavior of medical staff in real time, and is difficult to provide hand washing reminding in time. And electronic reminding systems are mostly based on fixed equipment (such as a hand sanitizer dispenser) and cannot cover all key scenes.
Finally, the traditional method lacks data support and management optimization, is difficult to collect and analyze hand hygiene compliance data, and cannot provide support for management decisions.
Therefore, the hand hygiene management of hospitals faces challenges such as inability to monitor in real time, single reminding mode, frequent reminding interference, lack of data support and the like.
Disclosure of Invention
In order to solve the problems, the application provides a nurse hand washing reminding system combining UWB ultra-wideband positioning and PDA.
In one aspect of the present application, a hand washing reminding system for nurses combining UWB ultra wideband positioning and a PDA is provided, comprising:
the UWB ultra-wideband positioning module is used for reporting the EWB positioning signal of the medical staff to the server according to the preset frequency;
the server is used for receiving the EWB positioning signal and calculating whether the medical staff reaches a preset hand washing area or not:
If yes, generating corresponding hand washing reminding information and pushing the hand washing reminding information to a PDA held by medical staff;
Otherwise, continuing monitoring;
A PDA for receiving and responding to the hand washing reminder;
The UWB ultra-wideband positioning module and the PDA are respectively connected with the server in a communication mode.
Preferably, the UWB ultra wideband positioning module includes:
The UWB tag is worn on the body of the medical staff and is used for sending the EWB positioning signal of the medical staff to the UWB base station;
The UWB base station is deployed in the hand washing area and is used for sensing and receiving the EWB positioning signal, calculating corresponding position information according to the EWB positioning signal and reporting the position information to the server in real time;
And the UWB tag and the UWB base station are in mutual inductance communication connection by adopting a near field communication technology.
Preferably, the UWB base station is deployed in the hand washing area where the ward or treatment cart is located.
Preferably, the PDA and the server communicate using the MQTT protocol.
Preferably, the server is further configured to:
Registering an identification ID of a medical staff;
binding the UWB ultra-wideband positioning module and the PDA with the identification ID of the corresponding medical staff.
Preferably, the server calculates whether the healthcare worker reaches the preset hand washing area by:
wherein:
Px,Py is the coordinate of the current position of the medical staff (acquired in real time through the EWB positioning signal);
cx,Cy is the center coordinates (predefined by the system) of the preset hand washing area;
R is the radius of the hand washing area;
when the hand washing key value is 1, judging that the medical staff is positioned in the hand washing area;
and when the hand washing key value is 0, judging that the hand washing key is not entered.
In another aspect of the application, a hand washing reminding method for nurses combining UWB ultra-wideband positioning and PDA is provided, comprising the following steps:
Activating a UWB tag, and periodically sending an EWB positioning signal of medical personnel to a UWB base station;
The UWB base station receives the EWB positioning signal in an induction way, calculates corresponding position information according to the EWB positioning signal and reports the position information to the server in real time;
The server receives the EWB positioning signal and calculates whether the medical staff reaches a preset hand washing area or not:
If yes, generating corresponding hand washing reminding information and pushing the hand washing reminding information to a PDA held by medical staff;
Otherwise, continuing monitoring;
and the PDA is used for receiving and responding to the hand washing reminding information.
In another aspect, the present application further provides an electronic device, including:
A processor;
a memory for storing processor-executable instructions;
the processor is configured to implement the nurse hand wash reminder method combining UWB ultra wideband positioning with a PDA when executing the executable instructions.
The invention has the technical effects that:
The application provides a hand washing reminding system based on combination of UWB ultra-wideband positioning and a nurse PDA. The system utilizes UWB technology to track the position of medical personnel in real time, receives reminding information through nurse PDA equipment, combines time threshold and hand washing state, avoids frequent reminding, covers a plurality of key scenes such as ward, treatment car, and ensures the comprehensiveness and the validity of reminding. The system also records reminder data, providing support for hand hygiene compliance analysis and management decisions.
The invention can solve the following technical problems:
1. The real-time monitoring and reminding are insufficient:
The traditional hand hygiene management method cannot track the position and the behavior of medical staff in real time, and is difficult to provide hand washing reminding in time.
According to the scheme, the position of medical staff is monitored in real time through the UWB ultra-wideband positioning technology, and the hand washing reminding is ensured to be triggered in key scenes (such as entering a ward and approaching a treatment vehicle).
2. The reminding mode is single and the coverage is incomplete:
Existing electronic reminder systems are mostly based on stationary equipment (e.g. dispensers for hand sanitizers) and do not cover all critical scenarios.
The scheme combines with PDA equipment of nurses to realize multi-scene coverage (such as ward and treatment vehicle) and ensure comprehensiveness and effectiveness of reminding.
3. Frequent alerts lead to alert fatigue:
the system may trigger excessive invalid reminders when medical personnel frequently go into and out of the ward or treatment area, resulting in a reminder to be tired.
According to the scheme, frequent reminding is avoided through time threshold and hand washing state recording, and reminding accuracy and user experience are improved.
4. Lack of data support and management optimization:
the traditional method is difficult to collect and analyze hand hygiene compliance data, and cannot provide support for management decisions.
According to the scheme, the reminding data are recorded, so that data support is provided for hand hygiene compliance analysis and management optimization.
Other features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.
Detailed Description
Various exemplary embodiments, features and aspects of the disclosure will be described in detail below with reference to the drawings. In the drawings, like reference numbers indicate identical or functionally similar elements. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
In addition, numerous specific details are set forth in the following detailed description in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present disclosure may be practiced without some of these specific details. In some instances, well known means, elements, and circuits have not been described in detail so as not to obscure the present disclosure.
Example 1
As shown in fig. 1, in one aspect of the present application, a hand washing reminding system for nurses combining UWB ultra wideband positioning and PDA is provided, comprising:
The UWB ultra-wideband positioning module is used for reporting the EWB positioning signal of the medical staff to the server according to the preset frequency, and comprises a UWB tag, a UWB base station, a wireless communication module and a wireless communication module, wherein the UWB tag is worn on the medical staff and used for sending the EWB positioning signal of the medical staff to the UWB base station;
the server is used for receiving the EWB positioning signal and calculating whether the medical staff reaches a preset hand washing area or not:
If yes, generating corresponding hand washing reminding information and pushing the hand washing reminding information to a PDA held by medical staff;
Otherwise, continuing monitoring;
A PDA for receiving and responding to the hand washing reminder;
The UWB ultra-wideband positioning module and the PDA are respectively connected with the server in a communication mode.
The system comprises the following components:
uwb base station:
Deployed in hospital wards and treatment carts for receiving UWB tag signals and calculating position.
The base station in the treatment vehicle adopts battery power supply, and is lightweight and convenient to move.
Uwb tag:
embedded in the nurse's tablet, UWB signals are transmitted in real time for locating the nurse's position.
3. Nurse PDA device:
each nurse is equipped with a PDA device and installs a hand wash reminder application.
For receiving the hand washing reminder sent by the server and notifying the nurse of the reminder by sound, vibration or screen.
4. And (3) a server:
And adopting an MQTT protocol to push the message and receiving the position information sent by the UWB base station.
And judging whether the hand washing reminding needs to be sent or not according to a preset rule (such as a nurse enters a ward or approaches a treatment vehicle).
Preferably, the UWB base station is deployed in the hand washing area where the ward or treatment cart is located.
Preferably, the PDA and the server communicate using the MQTT protocol.
The UWB positioning module is deployed in a tablet or a bracelet of medical staff and used for collecting high-precision position data in real time.
The server is deployed at the local or cloud of the hospital and is responsible for receiving data, calculating positions and generating reminding logic.
PDA (palm terminal 7 nursing terminal) which is carried by medical staff and supports MQTT protocol communication.
Configuration is as follows:
UWB positioning module realization
And (3) positioning signal acquisition:
centimeter level positioning is achieved using UWB chips (e.g., DECAWAVEDW1000,1000 or QorvoDWM3000,3000).
Real-time coordinates are calculated by TOF (TimeofFlight) or TDOA (TimeDifferenceofArrival) algorithm.
And (3) data reporting:
and packaging the coordinates (P_x, P_y) into a JSON format through WiFi or Bluetooth according to a preset frequency (such as 1 time per second), and reporting the JSON format to a server.
And the IEEE802.15.4a protocol is supported, and the multipath interference resistance is strong.
The communication between the server and the base station,
And receiving coordinate data reported by the UWB module through RESTAPI or WebSocket.
Parsing the JSON data extracts device_id and (p_x, p_y) (see later formulas for details).
Region judgment algorithm:
the preset hand washing area parameters (c_x, c_y, R) are read from the database.
Whether the area is entered is calculated according to the formula:
the server calculates whether the medical staff reaches the preset hand washing area in the following way:
wherein:
Px,Py is the coordinate of the current position of the medical staff (acquired in real time through the EWB positioning signal);
cx,Cy is the center coordinates (predefined by the system) of the preset hand washing area;
R is the radius of the hand washing area;
when the hand washing key value is 1, judging that the medical staff is positioned in the hand washing area;
and when the hand washing key value is 0, judging that the hand washing key is not entered.
Reminding logic and pushing:
and (3) condition triggering:
If the key value=1, generating reminding information and recording event time stamps.
If the method is carried out continuously for a plurality of times (avoiding false triggering), an anti-shake mechanism can be arranged (for example, the method only reminds once within 5 minutes).
MQTT push:
by combining { medical PDA device_id } and alert information, generating alert information and pushing JSON message to the PDA:
{
"type":"handwash_alert",
"message": "please immediately wash hands-,
"timestamp":1633027200,
"area_id":"WASH_ZONE_01"
}。
PDA terminal response
Subscription to MQTT topics:
The PDA subscribes to the reminding message when starting.
And (3) reminding and triggering:
After receiving the message, triggering vibration, sounding a buzzer and popup a screen (priority: vibration > sound > popup).
User feedback:
after the healthcare worker clicks "confirm" after washing his hands, the PDA sends feedback to the server (optionally for compliance statistics).
The server counts the hand washing confirmation information fed back by each medical staff through the PDA and generates a report, and a backstage manager can timely check and judge the hand washing condition of each medical staff.
The implementation is as follows:
UWB locating base stations (anchors) are installed in the hand washing area to ensure signal coverage.
The medical staff is allocated with the industry cards of the integrated UWB module.
System configuration:
The hand washing area coordinates (c_x, c_y) and the radius R are predefined at the server.
TLS encryption of configuration MQTTBroker and client authentication (preventing data leakage).
The working flow is as follows:
1. Position tracking:
UWB tags periodically transmit UWB signals, and UWB base stations receive the signals and calculate the location of the tags.
The base station transmits the location information to the server through the wireless network.
2. And (3) reminding and triggering:
the server judges whether the nurse enters a key area (such as a ward or a treatment vehicle) needing hand washing according to the received position information.
If the reminding is judged to be needed, the server pushes the reminding information to PDA equipment of the nurse through the MQTT protocol.
3. And (3) reminding display:
After the PDA device receives the reminding information, the PDA device reminds the nurse of washing hands through sound, vibration or screen notification.
4. Time threshold optimization:
The system sets a time threshold (e.g., 30 minutes) within which only one reminder is triggered, avoiding frequent reminders. If the nurse enters the same area multiple times within the threshold, the system does not trigger the reminder repeatedly.
Preferably, the server is further configured to:
Registering an identification ID of a medical staff;
binding the UWB ultra-wideband positioning module and the PDA with the identification ID of the corresponding medical staff.
The background can record the equipment ID of each medical staff holding the PDA, the code/number of the label on the wearing tablet, and the like, and bind with the ID and the like, thereby being convenient for recording the hand washing data. The binding job is handled by an administrator.
The server receives the EWB positioning signal, acquires the position coordinates of the medical staff at intervals, and then calculates whether the medical staff enter the area in real time. The formula can calculate whether each position point is in the area in real time, and the flow is as follows:
Data input:
The server receives the EWB positioning signal in real time and analyzes the coordinates (Px, py) of the medical staff.
Parameters (Cx, cy, R) of the preset hand washing area are read from the configuration, the hand washing facility is configured on the ward or medical vehicle, and the specific parameters are recorded on the background server in advance by an administrator.
And (3) calculating the distance:
calculating the square root of Euclidean distance between the current coordinate and the center of the region and comparing the square root with R;
And (3) condition judgment:
If the calculated result (d) is less than or equal to R, judging that the medical staff is positioned in the hand washing area (at the moment, the system outputs a hand washing key value of 1);
otherwise, it is determined that entry is not made (hand washing key value=0).
Extended scene
Polygonal area:
If the hand washing area is an irregular polygon, a ray method or a vector cross product method is used to judge whether the point is in the polygon.
The complexity of the formula is increased, and the number of intersection points or the change of symbols is judged edge by edge.
Three-dimensional space:
If the floor height (such as a multi-story structure of a hospital) needs to be considered, the z-axis coordinates (Pz, cz) are introduced and the formula is expanded as follows:
d2＝(Px-Cx)2+(Py-Cy)2+(Pz-Cz)2≤R2。
The formula associates the positioning signal with a preset area through a geometric relationship, and provides a real-time judgment basis for monitoring hand hygiene compliance of hospitals.
It should be apparent to those skilled in the art that implementing all or part of the above-described embodiments may be accomplished by computer programs to instruct related hardware, and the programs may be stored in a computer readable storage medium, which when executed may include the processes of the embodiments of the controls described above. It will be appreciated by those skilled in the art that implementing all or part of the above-described embodiments may be accomplished by computer programs to instruct related hardware, and the programs may be stored in a computer readable storage medium, which when executed may include the processes of the embodiments of the controls described above. The storage medium may be a magnetic disk, an optical disc, a Read-only memory (ROM), a random access memory (RandomAccessMemory, RAM), a flash memory (flash memory), a hard disk (HARDDISKDRIVE, abbreviated as HDD), a Solid state disk (Solid-state disk-STATEDRIVE, SSD), or the like, and the storage medium may further include a combination of the above types of memories.
Example 2
Based on the implementation principle of embodiment 1, in another aspect of the present application, a hand washing reminding method for nurses combining UWB ultra wideband positioning and PDA is provided, comprising the following steps:
Activating a UWB tag, and periodically sending an EWB positioning signal of medical personnel to a UWB base station;
The UWB base station receives the EWB positioning signal in an induction way, calculates corresponding position information according to the EWB positioning signal and reports the position information to the server in real time;
The server receives the EWB positioning signal and calculates whether the medical staff reaches a preset hand washing area or not:
If yes, generating corresponding hand washing reminding information and pushing the hand washing reminding information to a PDA held by medical staff;
Otherwise, continuing monitoring;
and the PDA is used for receiving and responding to the hand washing reminding information.
The above method steps are understood and implemented in conjunction with embodiment 1, and are not repeated here.
The modules or steps of the invention described above may be implemented in a general-purpose computing device, they may be centralized in a single computing device, or distributed across a network of computing devices, or they may alternatively be implemented in program code executable by a computing device, such that they may be stored in a memory device and executed by a computing device, or they may be separately fabricated into individual integrated circuit modules, or multiple modules or steps within them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
Example 3
Still further, another aspect of the present application provides an electronic device, including:
A processor;
a memory for storing processor-executable instructions;
Wherein the processor is configured to implement a nurse hand wash reminder method combining UWB ultra wideband positioning and PDA as described in embodiment 2 when executing the executable instructions.
Embodiments of the present disclosure provide for an electronic device that includes a processor and a memory for storing processor-executable instructions. Wherein the processor is configured to execute the executable instructions to implement a nurse hand wash reminder method incorporating UWB ultra wideband positioning and PDA as described in the previous embodiment 2.
Here, it should be noted that the number of processors may be one or more. Meanwhile, in the electronic device of the embodiment of the disclosure, an input device and an output device may be further included. The processor, the memory, the input device, and the output device may be connected by a bus, or may be connected by other means, which is not specifically limited herein.
The memory is used as a computer readable storage medium for storing software programs, computer executable programs and various modules, such as a program or a module corresponding to a nurse hand washing reminding method combining UWB ultra-wideband positioning and PDA in the embodiment of the disclosure. The processor executes various functional applications and data processing of the electronic device by running software programs or modules stored in the memory.
The input device may be used to receive an input number or signal. Wherein the signal may be a key signal generated in connection with user settings of the device/terminal/server and function control. The output means may comprise a display device such as a display screen.
The foregoing description of the embodiments of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvement of the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.