Jiangsu University

State Grid Jiangsu Electric Power Company

Suzhou Sharp-rock Energy Development Technologies Co., Ltd.

The Mitt Research Institute of Telecommunication Transmission

State Grid Jiangsu Electric Power Co., Ltd. Information & Telecommunication Branch

Ling Wang

Xiaohu You

Yan Zhang

Mingyang Chen

Xiaoming Xu

Liangcheng Jiang

Shixin Cheng

Ming Tang

Yuanhan Du

Mingming Zhang

Linjiang Shang

Fei Xia

Jinling He

Xinwen Shan

Ling Zhuang

Ran Zhao

Guoquan Yuan

Zheng Lou

Haodong Zou

Lei Fan

Disclosed are a power grid-friendly control method and system for a data center cooling system. The method includes: dividing an equipment room into a plurality of pieces of subspace in advance, with a plurality of servers and a cooling device comprised in each piece of subspace; obtaining total power consumption of the servers in each piece of subspace; performing priority sorting on the total power consumption of the servers in each piece of subspace; obtaining a real-time power supply energy consumption value of a power grid; determining, whether an energy supply is sufficient; and if the energy supply is sufficient, skipping turning off the cooling device in the subspace; or if the energy supply is not sufficient, turning off a cooling device, till it is determined that the energy supply is sufficient, thus minimizing impact of turning off the cooling system on stability.

Power grid-friendly control method and system for data center cooling system

This invention presents a solar light collecting and guiding system for stabilizing the output light intensity, wherein the system comprising an array of converging lenses and optical fibers for collecting light focused by converging lenses. The fibers and the lenses are in one-to-one correspondence wherein the input end of an optical fiber is located in the focus position of the corresponding converging lens, and the axis of the optical fiber overlaps with the principal axis of the corresponding converging lens. The system is equipped with a sunlight tracking positioning device for synchronized motion, wherein the device is applied to tracking the sun light ray vertical incident into the central converging lens. The system has the function of outputting stable light intensity, that is, it can effectively reduce the variation of the collecting efficiency caused by the positioning deviation between the incident angle of sunlight and the designed input angle.

Solar light collecting and guiding system

A car awning including a mounting frame, a main rolling mechanism and a hauling mechanism. The main rolling mechanism has a main rolling drum rotatably disposed on the mounting frame, two layers of first awning cloths are layered wound on the main rolling drum, and two first awning supporting poles connected to the two first awning cloths. The two first awning supporting poles are capable of moving towards opposite directions along a first path perpendicular to the axis of the main rolling drum. The hauling mechanism is used for hauling the two first awning supporting poles to move. By mounting the awning on the top of a car via the mounting frame, the car awning can shade sunshine for the car when the awning cloths are unfolded, and the car awning can be used as a luggage carrier when the awning cloths are rolled up.

Car awning

An automatic frequency correction (AFC) apparatus used for CDMA multipath fading channels comprises a frequency-offset evaluator, an automatic frequency correction loop filter and a carrier frequency adjuster. The present invention provides a 'multipath energy window' designing method for the non-determinacy of multipath signals in mobile communication environment. Frequency-offset information can be extracted from the multipath energy window by a simple calculation and evaluated by a maximal SNR weight process. This invention also provides a step-variable accumulation adjusting method and greatly improves the response speed of the AFC apparatus as compared with a conventional loop filter, whereby supplies better AFC required for CDMA mobile terminals.

Frequency auto-correction apparatus for CDMA multipath fading channel

Growing community of inventors

Jiangsu, China

Ling Wang