What a Blood Bank Must Do
Blood centers, central blood stations, and hospital blood banks collect and supply blood, store it, issue it, and keep a trace. That is a public-health duty. The Technical Operating Procedures for Blood Stations and the Measures for the Administration of Clinical Blood Use in Medical Institutions set strict rules on collection, storage temperature, shelf life, and traceability. Blood is held refrigerated at 2–6°C or frozen below −20°C. A temperature excursion can mean the unit is discarded, and the loss from temperature problems each year is not small. The National Health Commission is pushing digital blood management, with a trace from donor to recipient. The Chinese Society of Blood Transfusion counts about 400 blood stations nationwide and more than 10,000 hospital blood banks. Spending on smart-blood-bank systems is growing about 15% a year.
Core Pain Points
Temperature, and who notices: Blood fridges and cold rooms sit on different floors and in different departments. A paper log and a walk-around are slow, and an excursion is found late. Traceability and compliance: Collection, processing, storage, and issue each need a trace. A handwritten record is easy to get wrong and hard to look up. The equipment: A failed fridge, centrifuge, or blood-component separator stops the work. Maintenance has to be predicted, and the response has to be fast.
Standards and Terms
Relevant documents include WS 399, Requirements for blood storage; GB/T 29790, Requirements for the quality and competence of point-of-care testing; and WS 363, Catalogue of health information data elements. Terms in daily use: RFID (the bag label, for a fast read and a trace); NB-IoT (narrowband IoT, for a low-power temperature and humidity sensor); M2M (device-to-platform communication); cold chain (zones such as 2–8°C refrigerated and −20°C frozen). An NB-IoT sensor reports every 5–15 minutes and alarms at once if the limit is crossed. RFID reads at 0.5–2 m and follows ISO 18000-6C.
Who Builds It
The chain runs from temperature-controlled equipment (Haier Biomedical and Aucma) through RFID and information systems (Neusoft, Winning Health, and B-Soft) to the connectivity layer. Haier Biomedical leads blood storage and cold-chain monitoring. Neusoft and Winning Health supply blood-station information systems. One provincial blood center put NB-IoT temperature and humidity monitoring on more than 200 blood fridges. An out-of-range alarm goes out within 3 minutes, and temperature-related discards are about 40% lower.
Where IoT Is Used
Temperature and humidity, as it happens: Sensors inside the blood fridge and the cold room report over NB-IoT or 4G. An excursion raises an alarm by SMS, phone, or the platform. History curves and reports are there for the inspector.
One bag, end to end: An RFID tag and a reader record collection, processing, storage, and issue. The record joins the blood-station system and the hospital HIS, so a single bag can be followed the whole way.
The equipment: Fridges, centrifuges, and other critical machines report run state and fault codes. Maintenance is planned before a stoppage.
Where the Market Is Heading
Regional blood-information platforms are being joined to the IoT feed. AI is starting to forecast stock and to plan transfers. Mobile collection vehicles and shelter-style collection points are going online. Blockchain is being tried as a way to keep the bag trace.
Summary
A blood bank is judged on whether the unit is safe and whether it can be found. The sensor, the tag, and the machine status are what make that possible. SimtoLink supplies NB-IoT and 4G SIM cards and communication modules for this work, so a fridge sensor stays online and a temperature excursion is not discovered on the next paper round.