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During the transportation of medicines, there are strict requirements on temperature and humidity. The storage temperature and humidity are not within the storage temperature and humidity range of the medicines, and the properties of the medicines will change, with disastrous consequences. If you use traditional temperature and humidity monitoring methods, you can only monitor the end-to-end node temperature and humidity, but even if the node temperature and humidity are normal, it cannot guarantee that the temperature and humidity during transportation will always be normal. Using RFID technology, you can understand the drug in the transportation process. Whether the temperature and humidity changes and possible quality changes caused by this. RFID still has the cost advantage of large-scale application.
In response to this demand, Chuangyi Technology introduced a temperature and humidity monitoring system for pharmaceutical factory logistics based on RFID + GPRS. Through the combination of advanced active RFID technology and wireless communication technology, the quality of the product can be managed in a detailed and real-time manner.
1. Working principle
First of all, before the medicine box is put into the cold chain truck, the temperature and humidity label will be installed in the logistics truck. After the shipment starts, it will continue to record the temperature and humidity of the environment where the items are located. The label information is sent wirelessly. The label uses the ZigBee microwave label, which ensures that the information can be sent to the PDA outside the medicine box through the metal medicine box, so that the PDA placed at the door of the logistics vehicle can read the data sent by the label, and show. If the temperature reaches a preset limit value, an alarm is issued. The system controls the PDA reading time, controls the PDA switch to read the data sent by the tag every few minutes, and sends it to the computer in the logistics center of the pharmaceutical factory in the form of a table or a curve.
If the temperature in the logistics vehicle is close to the preset temperature limit value, the system will alarm according to the preset method to remind the driver to adjust the temperature of the logistics vehicle cold storage. The system can also be equipped with a GPRS module. Through GPRS technology, the logistics center of a pharmaceutical factory can monitor the temperature of the logistics vehicle through a PDA, and draw a curve or chart for analysis. When the cargo arrives at the destination, the driver can immediately check the box with abnormal temperature based on the warning signal. The system will also automatically create a temperature trend graph, so that it can accurately know what changes in temperature occurred at what time. When the medicine is delivered to the customer, the temperature change during the entire logistics process can be viewed through the PDA. Once the real-time temperature value at a certain moment is found to exceed the limit value range, the customer can choose not to receive the goods and the driver not to deliver.
Second, the system process
Three, function
1. Pharmaceutical logistics information (driver information, consignee information, logistics vehicle departure time, arrival time, whether delivery is completed, etc.)
Put the temperature label on the medicine box before the medicine is put forward from the medicine warehouse, and enter the relevant information of the logistics vehicle into the label. When the medicine is put into the logistics vehicle, it starts to count and record the time. When the logistics vehicle arrives, the time is recorded. After successfully delivered to the customer, the driver clicks to complete the delivery.
2. Drug-related information (name of drug, quantity of drug, attribute of drug, storage temperature.)
The drug-related information is stored in the electronic label. Customers and others can read it through the handheld device or view it on the corresponding website of the logistics center through the PDA. If the customer thinks it is necessary, the curve can be directly transferred through an external printer. The chart is printed out, together with the delivery note, for the customer to sign for it. After the medicine is out of the warehouse, the information of the medicine is stored in the database of the computer in the logistics center of the pharmaceutical factory for later query.
3. Real-time temperature changes in the logistics vehicle
As shown in the figure above, the temperature tag starts timing when the medicine is placed in the logistics vehicle, and the PDA reads the temperature data every few minutes. This time period can be set by the user. If the temperature reaches a preset critical value (the critical value is within the storage temperature range of the medicine). (Inside) When the alarm point is reached, the system will issue an alarm to remind the driver to adjust the temperature in the logistics vehicle. It displays the temperature change in the logistics vehicle every few minutes, and the customer can check it through the PDA at any time after the driver. The computer in the logistics center of the pharmaceutical factory can also monitor the temperature in real time through the data sent by the handheld.
4. Alarm management (number of alarms, alarm time, whether to deal with)
When the temperature in the logistics vehicle reaches a preset critical value, the PDA will issue an alarm to notify the driver to pay attention to adjusting the temperature of the logistics vehicle’s cold storage to prevent the temperature from exceeding the storage temperature of the medicine and spoiling the medicine. As for the data sent by the logistics center through the PDA, once the data exceeds the range, the computer in the logistics center will also send an alarm. After a period of time, if the alarm does not disappear, the administrator must notify the driver and ask about the situation.
5. System settings (settings for system alarm mode, processing mode, time interval, etc.)
The system software can control the time and frequency of data sent by the PDA, which saves the trouble of sending data all the time by the tag and reading the data all the time by the PDA.
Four, hardware products
electronic label
Handheld card reader
system software
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