Design and development of intelligent terminal of special cargo monitoring system

With the rapid development of the Internet of things, in order to ensure the safety of special cargo transportation and solve vehicle trajectory tracking problem, the paper designs and develops the intelligent terminal for special cargo monitoring system. The terminal consists of two parts—the acquisition node (Node) and the aggregation node (Sink), a combination of digital high-precision sensor technology, low-power short-range wireless communications technology, GPS technology, GPRS technology and low-power embedded system design and management technology. The acquisition node can detect the temperature, humidity and other environmental information of goods during the transporting process. The aggregation node is responsible for the collection of all the information from each acquisition nodes and can obtain the GPS location information, meanwhile it can use GPRS and remote monitoring center for information exchange. Testing results indicate that the terminal is running good. It is small in size, reliable to transmit, widely used and low-power, with satisfying installation flexibility, scalability, and anti-interference ability.