RFID engine production line management system case of a well-known manufacturer in Shandong
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By investigating the logistics management requirements of the manufacturer’s assembly line and the practical application characteristics of RFID, the specific application process of RFID in the assembly line is now explained in detail.
1. Communication method
The actual transmission rate of the reading (writing) device and the assembly station PC management machine and the logistics control management information system host is not very high, only the ID number and product number of the identified object are transmitted, and the amount of data transmitted is small, so RS232/485 mode transmission, the reliable transmission distance can reach 1200 meters.
2. System workflow description
2.1 Engine assembly production line
2.1.1 On-line workstations for engine assembly products:
1. When the steel body of the engine to be assembled enters the first station of the assembly line and goes online, the workshop logistics control management information system executes the following operating procedures according to the determined assembly production plan:
2. The logistics system sends the number of the steel body needed to be assembled to the first station computer, and the computer-controlled drilling machine engraves the steel body number on the engine steel body;
3. The card issuer reads the ID number information of the special electronic label, and writes the label number not greater than 30 digits into the electronic label to complete the initialization of the special electronic label;
4. The operator sticks the special electronic label on the attached steel body or pallet, and starts the logistics delivery control system to transport the electronic label to the initial station on the line.
5. After the workshop logistics control management information system computer confirms that it is correct, the logistics delivery control system will start the delivery mechanical transmission system to deliver the assembled product to the next station.
2.1.2 Assemble the product components assembly station
When the product to be assembled enters the component assembly station, the logistics control management information system performs the following operations:
1. When the logistics delivery control system accurately conveys the assembly product to the assembly station, the reading (writing) device reads the data information stored in the electronic tag on the product;
2. The electronic data information read by the reading (writing) device is directly transmitted to the logistics control management information system. The management system then lists the names, models and other requirements of the components that should be installed at the station according to the information of the station where the product arrives, and displays it in On the screen of the assembly station management machine, the assembly worker is prompted to perform the correct assembly process;
3. After the assembly process of the station is completed, the assembly worker will confirm on the computer, and feedback the assembly information to the logistics control management information system;
4. After the station assembly information is confirmed by the workshop logistics control management information system computer, the logistics delivery control system will activate the delivery mechanical transmission system to deliver the assembly product to the next station.
5. Different types of products will be delivered to different subsequent assembly lines according to the plant equipment layout and specific conditions.
2.1.3 Product quality inspection station
When the assembled engine enters the quality inspection station, the logistics control management information system performs the following operations:
1. The reading (writing) device reads the data information stored in the electronic label on the product, and the logistics control management information system will confirm it according to the station number information;
2. After confirming that it is correct, the management system issues an engine quality inspection instruction, which is displayed on the computer screen of the assembly station, prompting the assembly workers to perform quality inspection operations;
3. For the engine that has passed the quality inspection, the information in the electronic tag is read by the reader, and after the information enters the logistics control management system, it enters the next assembly process;
4. For the engine that fails the quality inspection, the inspection staff finds out the cause of the failure, and after reading the information in the electronic tag through the reader, compares it with the information in the management system to find out where the failure occurred, and then judge it. Human operation errors or product quality problems with accessories. Then enter the repair procedure.
2.2 Generator assembly production line
The generator assembly process is basically similar to the engine assembly process. The difference is that after the generator is assembled, the number information in the electronic tag needs to be cleared to facilitate the recycling of the electronic tag.
2.2.1 Label removal station
When the generator completes all the component installation procedures and the product reaches the final label removal and printing station:
1. The reading (writing) device reads the data information stored in the electronic label on the product, and the logistics control management information system will confirm it according to the station number information;
2. After confirming that it is correct, the management system issues an electronic label disassembly instruction, which is displayed on the computer screen of the assembly station, prompting the assembly worker to perform the operation;
3. After the assembler completes the disassembly process and confirms, it will feed back to the logistics control management information system;
4. The logistics control management information system issues a printing instruction to the assembly station computer to complete statistical printing;
5. After printing, the logistics delivery control system will activate the delivery mechanical transmission system to deliver the assembled products to the next production assembly line.
3. Electronic tag storage information and management software system
A. The capacity of the information stored in the electronic tag can reach 1K, and it can store:
1. Product model to be assembled-fixed information
2. The serial number of the product to be assembled-fixed information
3. Product initial manufacturing year and month-fixed information
4. Other loading information or dynamic information
In addition, the product assembly online time and product assembly station number information are suitable for being automatically obtained from the assembly station management machine, and not suitable for writing directly into the electronic label.
B. The main functions of the automatic identification software HRMLV1.0 are:
1. Read the relevant information in the electronic label in real time;
2. When needed, the relevant information can be written into the electronic label;
3. Upload or directly process the data information to the logistics control management information system.
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