Vegetables grow under “water”, the advanced LED lights act as the “sun”

Viewed from a far, it is no different with the general plant, in addition to some staff dressed in a white lab coat sway everywhere. Coming into the reporters view are rows of shelves, bright lights, orderly infusion tube and colored vegetables and long in the “water” (plant nutrition led street lights). In July 17th, the reporter went to the first domestic production of IT plant factory. Its seen and heard let everyone eye-opened.

Vegetables grow under "water", the advanced LED lights act as the "sun"

“Do not underestimate this area of 616 square meters of workshop, it was able to produce hundreds of tons of vegetables.” Efficient ecological agriculture Development Co., Ltd., Shandong Green Dragon General Manager Yang Enguo said with a smile. He told reporters that the plant factory concept was first proposed by Japan, and its essence is the factory production of vegetables and flowers with computer regulation. In 2010, the company worked with power-net company, introducing of Japanese technology and equipment, relying on Tsinghua University, China Agricultural University, Shandong Academy of Agricultural Sciences to do the technical guidance and post-technical support, absorption and utilization of domestic and foreign technology, IT Plant Factory improve marketing, technology and equipment in order to achieve localization of advanced led lights. Yangen Guo said: ” Plant as production IT factories in the country, it is the first one. ”

As the plant factory is completely closed, constant temperature and humidity, with modern monitoring equipment to monitors the proportion of various components in the air, which is avoid lacking of something, and added it at any time. Wind poured dust Clean program, the implementation of the human body disinfection, the reporters put on shoe covers to enter the factory. In the plant factory, his eyes reflected high-tech concepts and applications. Red and blue advanced led lights source 24 hours lighting. It can not only meet the plant lighting needs, but also save energy, nutrient solution instead of soil. The plants need reasonable rationing nutrition; Factory vents have the insect nets and supporting the isolation device, which can effectively prevention of pathogens and cleaner production, and to ensure the quality of the vegetables.

“Plant factory” technology is basically an indoor job. It is a  relatively closed environment, sterilization. Disinfection is basically physical, as it has few pests and diseases, and can produce green vegetables. From the perspective of food security, it can be said that it is a useful exploration of the quality and safety of agricultural products.

 

The reason for damaged advanced led lights

High-power white LED as a new green lighting, it will own light conversion, high efficiency, low power consumption, long life, no maintenance, etc, and thus gradually being used in a variety of lighting in the area. The long life of the advanced led lights are based on a safe working environment. LED lighting is concerned. There are two threats affects their life. a electric shock over electric shock is applied to the LED on the current exceeds the maximum rated current of the LED technology in the data sheet, including over-voltage caused by over-current shock; another is overheating damage. Damage can be expressed as the immediate failure of the components that may also occur through electric shock after the incident for a long time before failure and to shorten the working life of LED.

The reason for damaged advanced led lights

The reason for advanced led lights 

The failure of LED lamps have two reasons. First, from the power supply and drive failure, the second is from the LED assembly failure. Normally, the failure from LED power supply and drive through electric shock (EOS) and the load side of  circuit failure. Input power over electric shock often cause damage to the driver chips in the driver circuit such as capacitors and other passive components breakdown damage; Load side short circuit failure may cause over-current drive of the drive circuit, drive circuit may short-circuit damage or short-circuit fault caused overheating damage.

The failure of LED components itself

Transient over-current events is to flow through the LED current to exceed the maximum rated current of the LED technology in the data sheet, which may be the direct result of the large current, and may be indirectly due to the high voltage generation, such as transient lightning switch over voltage event of power transient switching noise, power fluctuations caused by over-current. These events are transient, and shot duration, we usually referred as spikes, such as “current spikes, voltage spikes. The event caused by transient over current includes LED connected to the transient over-current power or hot plug.

For the LED lighting products in the car, ISO7637-2 transient load-dump surge impact is a major threat to their normal work.