Recently, the National Key Laboratory of Joint Innovation of the Ministry of Science and Technology and the State Key Laboratory of Semiconductor Lighting Joint Innovation, which was responsible for the preparation of the semiconductor lighting specification interface, was held in Beijing. In order to ensure the quality of the standard, the State Key Laboratory of Joint Innovation for Semiconductor Lighting has strengthened coordination with relevant parties, and invited key enterprises and research institutes and testing organizations of the semiconductor lighting industry to participate in the meeting and solicit opinions. The three national standards discussed in this article are "LED lighting application interface requirements: control device separation type, street lamp with self-contained cooling LED module", "LED lighting product accelerated attenuation test method 2000 hours", "LED public lighting intelligent system" Interface Application Layer Communication Protocol. Li Jintao, director of the State Key Laboratory of Semiconductor Lighting Joint Innovation, said that the support of the standard system is of great significance to the healthy development of the semiconductor lighting industry. It is hoped that relevant units will participate in the preparation of standards and jointly develop a certain technology forward-looking and expandable. The industry promotes strong national standards.
A bicycle trailer is a motorless wheeled frame with a hitch system for transporting cargo by bicycle. It can greatly increase a bike's cargo capacity, allowing point-to-point haulage of objects up to 4 cubic yards (3 cubic metres) in volume that weigh as much as half a ton.
Different types of trailer are designed for various purposes, cargo requirements and riding conditions:
By number of wheels:
Single-wheel: a single rear-mounted wheel. Though of limited towing capacity, this design tends to be more stable (when moving) than trailers with two or more wheels. The single wheel can tilt from side to side when cornering (as the bicycle itself does,) allowing for coordinated turns at relatively high speed. The connection to the bicycle is simpler than a two-wheeled trailer since only two degrees of freedom are required- the trailer tilts with the towing bicycle.
Two-wheel: A two-wheel design makes possible much greater load carrying capacity and a wider cargo bed. Though not suitable for high speed, they are ideal for everyday cycling (very much like towing a trailer behind a car). Two-wheel trailers tend to be as wide or wider than the handlebars of the bicycle, therefore care needs to be taken when riding through narrow spaces.
Bike Cargo Trailer
Bike Cargo Trailer, Bicycle Cargo Trailer, Motorcycle Cargo Trailer
Hangzhou Datasports Equipment Co.,Ltd(Oembicycle) , http://www.oembicycle.com