Application of RFID Sensing Technology in Blood Management

RFID is gradually being integrated with sensing technology. The combination of sensing technology and RFID technology will create an ubiquitous and always-aware "sensor network," which brings a new dimension to the management of medical supplies, especially blood management Opportunity.
RFID fusion sensor technology for the feasibility of blood management
      The general flow of blood management business: a blood test registration a blood test a blood test a blood bank a library management (component processing, etc.) a blood out of a hospital for patients to use (or made of other blood products). In this process, often involves a large amount of data information, including blood donors information, blood type, blood collection time, place, handlers and so on. A lot of information to the blood management has brought some difficulties, coupled with the blood is a very perishable material, if the environmental conditions are not suitable, the quality of the blood that is destroyed, so the blood in the storage and transportation, quality Real-time monitoring is also crucial. RFID and sensing technology is an emerging technology that can solve the above problems and help blood management effectively.
    RFID technology for each bag of blood to provide their own unique identity, and save the appropriate information for them, the information and background database connectivity, so the blood, whether in the blood collection point, or in the transfer point of the blood bank, or in the use of point hospitals , Can be monitored by the RFID system all the way, the blood in the transfer point of the information can be tracked at any time. In the past, people had to spend time and effort on the library. Before using, people also need to check the information manually. After using RFID technology, they can collect, transmit, check and update the data in large quantities in real time without the need of precise positioning, Library identification, but also to avoid the manual error checking often appear. The RFID non-contact identification feature can also ensure that blood is not contaminated conditions to identify and test, reducing the possibility of blood contamination, it is not afraid of dust, stains, low temperature, can be stored in the blood of special Environmental conditions to maintain normal work.
    Sensing technology is a window of perception, acquisition and detection of information, it can achieve the collection and quantification of data processing fusion and transmission applications. Through the sensor real-time monitoring and collection of the blood environment temperature, the sealing status and the degree of oscillation, the timely processing and reaction of the sensing information through the system can effectively prevent the blood from deteriorating and ensure the blood quality.
Combining RFID with sensing technology, we can realize the intelligent informationization of blood management by using the RFID sensor tag that can improve the recognition efficiency, realize information tracking, and monitor the quality of articles in real time.

Application of RFID Sensor Label in Blood Management
    Mainly from the blood out of stock management, blood tracking management, blood quality control management introduced in three aspects, pointed out that RFID fusion sensing technology in blood management in the effective role.
1 Blood out of storage management
(1) blood storage
    Staff will blood bags on the conveyor belt at the population passed in turn, the bottom of the conveyor belt installed RFID reader, when the RFID tag attached to the blood bag into the read-write read range, the information on the label is read out, the The middleware is filtered and sent to the backstage database. At the same time, the system displays the blood type, type, specification and other information on the screen at the exit of the conveyer. The staff releases the blood into the designated storage tray according to the displayed content.
    According to the read blood type, type, size, quantity, etc., background system to identify the cargo space in the blood bank, to find the existing specifications and quantity of empty cargo space. This step is achieved mainly by affixing an RFID tag to each shelf and writing information about the type, type, quantity, quantity, etc. of the blood that it should store via the reader, and when there is a blood bag on the shelf On this, the worker sets the RFID tag by using the handheld reader and writer. When the blood bag on the shelf goes out of storage or is displaced, the worker clears the RFID tag with the handheld reader and writer , While the reader installed at the top of the blood bank will read the labels of the shelves under the instruction of the system and find that the shelves that have been cleared and meet the storage conditions will notify the system and the system will put the The specific number is displayed on the screen of the depot, informing the staff which types of blood should be placed on which shelves.
    After being instructed, staff will give all kinds of blood to designated areas for refrigerated storage. At the same time, the reader will be stored in the blood bags of the storage time, the type of storage, sending blood, then blood and other information written to the RFID system.
(2) blood out of the library
   System issued a shipping order, instructed staff to the designated area to remove the specified type, size and quantity of blood. If the amount of blood taken less staff can use handheld readers directly read blood information; if the amount of blood taken more, staff can use the conveyor belt to send blood out of the library and read its information. Read out the information transmitted to the system, check with the background database, if correct, allowing the library. Out of the library process, RFID system records out of the library, the blood effective date and other secondary information.
    Blood out of the order by the system to read the information to analyze the decision, requiring the same kind of blood in accordance with the principle of first in, out to avoid inventory backlog and blood overdue phenomenon of waste. For the blood bank marked "pending" status of the blood out of the warehouse, in order to ensure the quality of the library out of blood.
2 Blood tracking management
   Blood tracking management uses a cluster-based hierarchy. Each cluster head is a distributed information processing center, which is used to collect the data of each cluster member and complete the data processing and fusion. Then the data is transmitted to the cluster head of the upper layer and transmitted in turn, and finally all the data are filtered and After the integration of the cluster head toward the top, and its inverse process is the information query process, the data layer by layer, orderly tracking. Here, the head of the cluster at the highest level is equivalent to the blood information center of the whole country, while the cluster heads at the next highest level are equivalent to the blood information centers of provinces, autonomous regions and municipalities directly under the Central Government, and so on. This hierarchical structure will spread the information, to avoid the centralized storage, to solve the problem of excessive information, but also improve the security of the system. Information exchange and delivery directly between the sub-layer and the parent layer, to facilitate the query and tracking.
The process of depositing blood information is as follows: Firstly, the RFID identification code of each bag of blood is stored in a database of grassroots blood stations, and then the information of the blood station in the grassroots unit is fused to match the identification code with the effective IP The address is saved in the local municipal blood information center database, and then the information of the municipal blood information center is fused, and the identification code and the effective IP address of the municipal blood information center are stored in the local provincial blood information center database, finally Re-integration of the information on the provincial blood information center, the identification code and the provincial-level blood information center effective IP address is stored in the National Blood Information Center database (if necessary, but also the identification code and then the National Blood Information Center The effective IP address is stored in a global database of blood information centers for global blood information interoperability).
The tracking process of blood information is as follows: According to the RFID identification code, first search the database of the national blood information center for the information of the province to which the blood of the bag belongs, and enter the database of the provincial blood information center according to the found IP address to find the belonging of the blood of the bag City information, according to the found IP address into the city blood information center database to find the blood bag blood belongs to the station, according to the IP address to enter the blood bank database, according to the information which can know the bag of blood current Status is saved in the library or out of the library is used or spoiled, if it is already used, you can further find the user's full information.
3 Blood quality control management
   Blood is very sensitive to changes in temperature. If the ambient temperature is unfavorable, the blood substances will be destroyed, which will affect the quality of the blood and the shelf life. During storage, delivery and transportation, the blood should also avoid violent oscillation. In addition, the blood packaging should be sealed. If the bacteria are contaminated by punctures or other factors, the blood will be discarded.
Application of RFID Sensing Technology in Blood Management
The RFID tag attached to the blood bag will monitor the environment around the blood bag in real time and measure the ambient temperature, pressure, sensation, oscillation and other physical signals at regular intervals and record the measurement data in the tag chip . The system will set a standard range for the label. Once the current measured data is lower than the lower limit of the range or higher than the upper limit of the range, the label will launch the RF signal to activate the alarm device to prompt the staff.