1. Project background
Medical waste is a waste of direct or indirect infectious, toxic and other hazards generated by medical and health institutions in medical, preventive, health care and other related activities. Medical waste contains a large number of pathogenic microorganisms and chemical agents, which have the dangerous characteristics of space infection, acute infection and latent infection. The harm of virus pathogen is dozens or even thousands of times of ordinary urban household garbage.
At present, the management system of medical waste in China is very imperfect, and the environmental pollution problem of medical waste has not been controlled from the source. The annual production of medical waste in China reaches millions of tons, but the centralized disposal rate is only 10%. In the management process, the collection, storage, transportation, treatment and disposal of medical waste are not fully regulated. A large amount of data is relied on. Manual collection, using paper records, difficult to save, easy to break and lost, difficult to query, work quality and efficiency are completely dependent on people's experience and responsibility, management quality can not be guaranteed, resulting in medical waste mixed into domestic garbage or domestic garbage mixed into medical waste The situation has occurred from time to time, causing secondary pollution to seriously threaten the health of the people, and once the virus flows into society with waste, it will pose a great threat to social stability and human health.
Traditional regulatory models have been difficult to meet regulatory requirements, and medical waste accidents have occurred from unintentional or intentional omissions. Such incidents in the country continue to sound alarms for us. It is important to explore a new medical waste monitoring system to achieve safer and more efficient supervision of medical waste.
2. Project content
RFID radio frequency identification technology is another emerging high-tech technology that causes changes in the field of automatic identification after bar code. It utilizes the characteristics of wireless electromagnetic wave penetration, long-distance transmission and high-speed data exchange to achieve identification through specific protocols. The technology for automatic identification of item information. In the identification of target objects, RFID technology has inherent advantages over the currently widely used bar code technology: wireless long-distance reading and writing, transparent reading and writing, and reading and writing in high-speed moving state. , store more data, can be used in harsh environments, and so on. Therefore, RFID technology has completely subverted the traditional management mode in many fields of automatic identification.
Through the research on the medical waste management process, with RFID technology as the core, a new medical waste management system based on RFID technology will be built to supervise the process of collecting, transshipment and destruction of medical waste, to prevent possible loopholes and to prevent In the process of collection, transshipment and destruction, medical wastes spread the pollution pathways of various viruses and other pathogenic bacteria sources, and realize the intelligent management of medical waste from collection and transportation to sub-inspection, utilization, treatment and disposal, and at the same time reduce waste flow. Manage the intensity of statistical work, improve the scientificity and readiness of statistical data, further standardize and inform medical waste management, and improve the supervision level of medical waste.
3. System design
The RFID tag is uniquely bound to the trash can containing medical waste. In the medical waste room, the waste information contained in the trash can is associated with the tag information and uploaded to the back-end system. When the waste arrives at the incineration center, the waste information obtained again is compared with the information in the system, and the incineration process is confirmed without any error, otherwise an alarm will be issued.
The overall design framework of the system is as follows
3.1 Medical waste room
The medical waste room completes the binding of the RFID tag to the trash can containing the medical waste, and after the waste is weighed, the weighing information is written into the electronic tag.
The trash can with the electronic tag installed will be weighed together with the medical waste. The RFID reader reads the electronic tag information of the trash can, obtains the weight of the medical waste from the weighing system, and writes the weight information to the electronic tag. in.
3.2 Incineration Center
In the incineration center, the garbage bin containing medical waste is placed on the conveyor belt. When it is in the weighing position, the trash can label is read by RFID, and the data is again weighed back to the background management system, and the management system will obtain The weight information is compared with the important information stored in the electronic label of the trash can. If there is no error, the subsequent incineration operation is performed, otherwise the alarm is sent to the staff.
3.3 System Process
The RFID medical waste management system consists of intelligent integrated RFID reader, weight collection equipment, display system, sound and light prompt system, server, information transmission system, etc. The specific operation process is as follows:
1. The receiving personnel arrive at the medical garbage collection and transportation point. Firstly, the person in charge of the medical waste of the hospital presents the legally authorized electronic label, opens the electronic flow of the receiving and dispatching, records the time, place and personnel information, and uploads the control center server at the same time. Electronic records.
2. The person in charge of the receiving party issues a legally authorized electronic label, and records the time, place, and personnel information, and uploads the server at the same time. After the server is successfully compared and recorded, the system automatically starts the electronic flow of receiving and receiving, and completes the electronic transfer of medical waste, and the whole process is completed within one second.
3. Weigh each barrel of medical waste, and write the information, time, location and weight information of the person in charge of the two parties to the electronic label through RFID technology, and upload the server for record.
4. After the medical waste transportation is distributed, it arrives at the incineration center. The RFID system reads the label information and automatically compares the information. The comparison result is uploaded to the incineration center monitoring room, and the failure information is alarmed.
4. Equipment selection
The system is applied to medical waste management, the use environment is special, the equipment needs to have good environmental adaptability, and can ensure efficient and stable work in harsh environments. Among them, the integrated reader is the core data acquisition device. The ThingMagic Astra-EX UHF reader has 750 tags/sec multi-tag reading processing capability and -75dBm receiving sensitivity, and fast tag reading capability. It can excellently obtain the information of the trash can label in the sport. At the same time, the lower receiving sensitivity can accurately obtain the label information in the face of the on-site environmental interference. The ThingMagic Astra-EX all-in-one reader is equipped with a high-performance antenna for easier and more flexible deployment.
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