Design scheme of ZigBee positioning management system for hospital personnel and equipment
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The intelligent medical hospital personnel equipment positioning management system, based on ZigBee wireless personnel positioning monitoring technology, uses ZigBee active electronic tags, in the form of wristbands, cards, etc., to wear electronic tags to patients who need to be tracked and monitored, and the specific location can be grasped in real time. The real-time position and status of the patient can be monitored through the computer monitoring center.
I. Overview
The hospital is an extremely dynamic working environment. The medical resources and personnel are changing in real time and need to be dealt with in time. For example, you need to know where the nearest clean infusion pump is during first aid, and you need to find a doctor as soon as possible; you need to know the patient when taking medicine. The lack of such real-time information often leads to delays in treatment and mistreatment, which affects the quality of medical services. If there is a lack of real-time monitoring of medical assets and personnel, it will directly affect the quality of diagnosis and treatment services and hospital benefits. Hospitals urgently need to establish a medical dynamic management platform to realize automatic real-time tracking of medical resources such as medical equipment, wards, patients, patient safety, medicines, medical waste, and medical supplies, and build a new generation of medical emergency systems and society based on this. Emergency medical defense system.
2. System introduction
The self-developed ZigBee wireless personnel positioning and monitoring system uses ZigBee active electronic tags, in the form of wristbands, cards, etc., to wear electronic tags to patients who need to track and monitor, and then they can grasp the specific location in real time. The real-time position and status of the patient can be monitored through the computer monitoring center.
Three, system architecture
First, place a number of positioning routers at the door of each room in the building, the exit of each floor, and the door of the building, and connect them to the computer network through zigbee wireless and GPRS and the monitoring room.
At the same time, wear a wristband tag (electronic tag) for each patient. Each patient’s wristband tag is matched with the card reader in the room where he is located. When a patient wearing an electronic wristband enters the building, as long as they pass or approach any card reader placed in the hospital, the card reader will immediately sense the signal and upload it to the computer in the corresponding intensive care unit immediately, and the computer can immediately determine Provide specific information (such as: who, where, specific time, physical condition, etc.), and determine whether the patient has gone to the wrong room, and display it on the computer screen of the intensive care unit and make a backup. The administrator can also click on a certain location in the hospital according to the distribution diagram on the large screen or on the computer, and the computer will then count and display the personnel in this area. If the patient leaves the room within the specified time, the intensive care unit sends a signal and displays the specific situation of the personnel, whereabouts and the estimated time of return.
Similarly, if the patient is not in the room or in the wrong room within the specified time, the monitoring room will issue an alarm to remind the administrator to perform the corresponding management operations.
There is a small button on the wristband. If the patient is in an emergency, he can press the button to notify the management staff that he has an emergency and needs help. When a patient presses the button, the nearby card reader can recognize it and send a signal to the control center to inform the control center of the specific location of the patient.
The computer in the monitoring room will sort out the various activity tables of each patient in this period according to the patient’s movement information for a period of time. In addition, once an accident occurs in the hospital, the personnel at the accident site can be found immediately based on the personnel distribution information in the computer, and then special detectors can be used to further determine the location of the personnel at the accident site to help managers resolve them in an accurate and rapid manner. accident.
The principles of medical staff and medical equipment management are roughly the same.
Four, system composition
1. Positioning wristband
The wireless ZigBee device worn on the wrist of the controlled object (patient, baby, etc.) identifies the identity by issuing a unique number through positioning, and coordinates with other devices in the system to locate the real-time position of the wristband, and report the status of the wristband, such as battery level and whether it is Disassembly, etc. At the same time, the wristband provides an alarm button. When an emergency is encountered, the button is pressed to send an alarm signal to the monitoring center. The alarm signal is received by the positioning reader and transmitted to the control center via the base station.
2. Location identification card
The wireless ZigBee device worn on the controlled object (medical staff, etc.) identifies the individual by sending a unique number. At the same time, the card provides an alarm button. When an emergency occurs, press the button to send an alarm signal to the monitoring center. The alarm signal is received by the positioning reader and transmitted to the control center via the base station.
3. Locate the card reader
Realize the acquisition, analysis and transmission of ZigBee positioning signals. The device receives positioning signals from ZigBee positioning tags (positioning wristbands and positioning identification cards, etc.), verifies the source of the signals, automatically analyzes them, and sends the analysis results through the ZigBee network for tag position calculations. The equipment adopts dedicated embedded computing and communication chips, with powerful signal analysis and network communication capabilities. Its unique large-capacity design ensures the real-time reception, calculation and forwarding of a large number of signals in a high-density personnel environment.
4. Base station
Realize the access and forwarding of the analysis data from the positioning card reader. The device obtains the positioning data transmitted by the wireless positioning card reader through ZigBee, packs it, and forwards it to the control center in real time. The base station can effectively realize the large-scale ZigBee network communication of locating the card reader.
Five, system function
1. Real-time positioning of personnel and equipment
Use wireless ZigBee recognition technology to realize real-time location monitoring of medical equipment, doctors, nurses, patients, etc. Based on real-time location information, it realizes access security management, medical equipment positioning and tracking, patient flow management, patient safety management, staff identification, and medical staff positioning.
Real-time positioning of personnel assets can provide real-time location information of medical staff, medical equipment, etc., so that you can find the required objects in real time, and avoid delaying the treatment time of patients; it can automatically search and locate and manage special patients, such as infectious disease patients and high-risk diseases. In order to quickly find the target in any corner of the hospital to prevent the spread of infectious diseases and other malignant accidents; it can quickly locate and find medical equipment that must be regularly maintained and prevent medical equipment problems. And the unnecessary tragedy happened. At the same time, through the graphical interface of the back-end hospital simulation platform, the staff can conveniently monitor and manage the controlled valuable assets and personnel in real time.
2. Fixed asset positioning management
There are various types of expensive inspection and treatment equipment in hospitals, and there are countless low-value equipment and low-value consumables. The management of such fixed assets in the daily management process requires the hospital asset management department to spend a lot of time, and every time the hospital assets are checked, the managers need to repeatedly check and check with the account book. Some of the equipment that has not been used for a long time is lost due to shelving, some have no account, and some have no account, which brings great workload to the entire inventory work. In addition, manual accounting and manual inventory in the inventory process bring heavy workload to the asset manager, and errors and omissions are prone to occur at the same time.
The fixed asset positioning management system is designed to solve the above problems, creatively adopting ZigBee wireless identification and information collection technology to realize the identification, positioning, monitoring and management of various fixed assets of the hospital. The system uses ZigBee electronic tags as the only identifiable identification, based on the hospital’s existing asset management system and financial asset management system, and takes the submission, approval, and execution of work orders as the main line, according to defect handling, planned maintenance, preventive maintenance, There are several possible models of predictive maintenance, aiming at improving asset management quality, maintenance efficiency, and reducing overall maintenance costs. Purchasing management, inventory management, and depreciation management are integrated into a unified information system for management and data sharing.
3. Maternal and child management
Due to the unobvious personal characteristics of newborns and lack of understanding and expression skills, when there is no effective mark, it is easy to cause misidentification or be dropped or stolen by criminals, causing great harm to all parties. Therefore, in addition to the function of the patient’s mark, the sign of the newborn must also be paired and associated with the mother and the baby in a one-to-one relationship to ensure the safety of the mother and the baby.
The mother and baby management system uses wireless ZigBee identification technology. After the baby is born, the baby and mother are identified in the delivery room. Wear an active wristband tag. The tag stores various related information about the mother and the baby (mother’s name, age; Baby’s gender, birth time, etc.). Doctors and nurses can obtain the information of the mother and the baby separately by holding the PDA, and successfully compare the pairing information to avoid holding the wrong baby.
When the medical staff hand over the baby, their information (name or job number) will be recorded in the identification tag, thereby clarifying the responsibility of the medical staff. At the same time, when an unauthorized tag enters the baby room, the system will automatically send an alarm to the monitoring center to effectively prevent the baby from being stolen.
4. Ward service
The ward service system is a service system for inpatients in the hospital. Through active identification wristbands, the overall situation of the inpatients is effectively integrated and managed, and the responsibilities for medication and drug delivery are clearly defined. At the same time, the system will automatically update the information in the wristband based on the daily doctor’s orders, including the latest doctor’s orders and medication information, so that doctors can obtain patient-related information in real time when doctors consult or have bed conditions, improve work efficiency, and shorten emergency treatment time.
The system wears an electronic wristband for each inpatient, and each ward nurse workstation is equipped with a handheld PDA to collect and store patient information after the doctor’s daily rounds, as well as the doctor’s orders and the patient’s basic vital characteristics data throughout the medical process. The information data of each link is recorded in the wristband, and the data is exchanged with the central data server through the handheld PDA.
5. Smart card management
The intelligent all-in-one card management system realizes the integration of digital work management and digital life services for the entire medical staff, patients, patient family members and other visitors, thereby building an intelligent smart hospital.
The system covers all aspects of cardholders’ work in the hospital, including personnel information management, canteen dining, patient ordering, charging and consumption management, access control management, attendance management, query management, patrol management, parking lot management, library management, etc. .
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