The air-suction precision seed-metering device is prone to the instability of seed adsorption state, which arises from blockage suction hole and leads uneven seeding. This paper analyzed determined key structural parameters plate, then established an mechanics model during migration process designed structure with aim improving uniformity high-speed direct seeding vegetables. Furthermore, we us...

In order to meet the requirements of rice field precision direct seeding in rows and hills, a spiral grooved seed metering device for hills is designed. The Matlab software used study movement trajectory buds groove during process. Based on quadratic regression-orthogonal rotation combination design, taking working speed wheel, length helix angle as test factors, well qualified rate hill diamet...

The main goals of smart metering are the reduction of costs, energy and CO2 by the provision of actual metering information to the providers and the customer. They allow for flexible possibilities to influence the customers’ energy consumption behavior and to adapt dynamically the power generation and distribution to the requested energy by smart grids. Metering devices are under control of gov...

At present, most of small grain crops such as millet and forage seeds are sown by external force feed in mainland China, which has some problems of wasting seeds, uneven seed distribution and so on. Therefore, it is needed to design a precise feed device for small grain corps. The author’s of this paper established a three-dimensional model to design the spiral groove precision seed-metering de...

Power line communication has recently attracted the attention of energy companies as a useful and natural technology for building the advanced metering infrastructure. In this context, device language message specification/companion specification for energy metering (DLMS/COSEM) is an increasingly popular standardised application protocol for communication between utilities and their customers....