Wal-Mart uses RFID to track vehicles at 12 distribution centers
Wal-Mart now uses ID Systems' RFID systems to track cranes and other vehicles at 12 distribution centers in the United States. Figure 1 ID Systems Wireless Asset Manager The software processes the location and sensor data of each tag and notifies the manager of the location of the vehicle at the distribution center and the current driver, whether the vehicle is shipping or not, and whether a warranty is required. The software also saves and aggregates data for each vehicle, providing visibility into the life cycle of the vehicle. Figure 2 ID Systems' Vehicle Management System Merlo said that Wal-Mart drivers must interact with the VAC on the vehicle before driving the vehicle. First, the driver first moved his personal badge closer to VAC. The VAC RFID reader reads the passive RFID tag in the badge, and then the VAC sends the driver's identity data to the central server, which determines if the driver is authorized to operate the vehicle. Selective Laser Sintering - Sls Stereo Light Curing Molding - Sla
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“The adoption of this system has achieved two main goals,†said Gene Merlo, deputy director of sales for ID Systems North America. “The system increases the productivity and vehicle usage of the distribution center.†Wal-Mart delivered a distribution in the second half of 2005. The center conducted initial testing, followed by the system in several small distribution centers in 2006, and subsequently adopted the system in a larger distribution center last year.
ID Systems' vehicle management system includes a Vehicle Asset Communicator (VAC) with a 915 MHz RFID receiver (battery-powered) - a small computer mounted on a crane or other vehicle. The VAC uses a dedicated air interface protocol to transmit data to the ID Systems receiver, the Wireless Asset Manager, which is installed throughout the distribution center, depending on the size of the distribution center. The Wireless Asset Manager then sends the collected data over a wireless or wired (Ethernet) connection to the ID Systems software running on the central server. 
If the driver passes the verification and is the first to drive a car in a shift, the VAC screen will instruct the driver to perform a safety check on the vehicle to see if the vehicle meets the US Department of Labor's occupational safety and health management rules. Part of the inspection process is implemented by the vehicle engine through programmatic diagnosis, and part is manual inspection.
When the driver drives the vehicle, the weight sensor connected to the VAC monitors the cargo area of ​​the vehicle, and takes the forklift as an example to determine whether the forklift carries the cargo. These Wal-Mart managers can use the collected data to increase productivity.
“If a distribution center has 100 vehicles and 80 drivers are registered, the manager knows that 20 vehicles are idle,†Menlo said. “Management personnel can also determine which of these 80 vehicles are transporting cargo, which vehicles are idle, and the frequency with which employees are transporting goods. Managers can compare these data with employees and learn about their performance and how to maximize their performance. utilize resource.
The distribution center can use this data to reduce the number of vehicles, Menlo said, or change the way the vehicle is used. “Forklifts are priced between $10,000 and $25,000,†he said. “Efficient management can significantly reduce operating costs. Before adopting a vehicle management system, ID Systems stated that Wal-Mart uses a warehouse management system to monitor the productivity of vehicle operators. However, the system The performance of employees cannot be fully measured.
According to Menlo, Wal-Mart has conducted a comprehensive test of the management system, including testing in a laboratory environment and an actual distribution center environment. VAC has never been subjected to RF interference from other RFID systems used by Wal-Mart, such as product tracking. EPC Gen 2 hardware, or an existing wireless LAN.
ID Systems' vehicle management system is also used in US Postal Services.
