RFID reader, also known as wireless radio frequency identification device, is an electronic device used to read and write information from RFID tags. After the RFID tag enters the range of the reader, the reader can read the data in the tag through the RF signal, achieving information exchange. At present, it has been widely used in logistics tracking, book management, archive management, inventory management, visitor management and other fields.

PDA handheld terminal is a data processing terminal device that can be used mobile, mainly for industrial scenario applications on the enterprise side. PDA has the characteristics of compact size, light weight, resistance to falling and collision, which is not only convenient for operators to carry, but also can quickly realize information collection, processing, query, transmission and other functions. For different industries, PDA handheld terminals can carry different functional modules. For example, PDAs in the warehousing and logistics industry will carry scanning modules, and PDAs for scientific exploration applications need to carry satellite positioning and telephone communication modules.

In modern logistics, a large amount of storage information will be generated every day. These information generally has the characteristics of frequent data operation, large amount of data, complex information content and so on. With the development of industrial Internet of things, the Internet of things warehouse with warehouse information management system can update the inventory location and record the inventory changes in real time on the computer. It greatly improves the utilization rate of warehouse space, personnel and equipment, gets rid of various problems in the process of manual management, and reduces the cost of the enterprise.

Bulk warehouses refer to container-type warehouses that store bulk or powdered materials. Different from the unitized stacking method, which is packaged into boxes or bags, the materials in bulk warehouses generally adopt the random stacking method. It is difficult to accurately measure bulk cargo with large volume and irregular shape by traditional methods. Therefore, modern warehouses generally use warehouse lidar for measurement. The radar can scan the warehouse in all directions, generate a grid-like surface, and accurately measure it, and finally provide high-precision and highly reliable material volume data. It solves the problems of low efficiency and high error of traditional manual measurement. And effectively reduce labor input and save business costs.