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Laser technology is one of the four great inventions of the twentieth century and atomic energy, semiconductor and computer par. Thirty years to the laser-based laser technology in China has been rapid development, is now widely used in various fields of industrial production, communications, information processing, medical, military, culture, education and scientific research, and achieved good economic and social benefits to the national economy and social development will play an increasingly important role. Development of short green laser pointer, high-tech, professional, development of the industry segment is the main line, and more to a certain industry or a certain power to segment the market. As the market needs of small and medium power laser cutting industry has been dominated by the laser market dominance. Although the Chinese small and medium power laser cutting equipment industry is still in the early stages of growth, the domestic laser equipment manufacturing enterprises generally smaller scale, much more than one hundred million yuan of annual sales revenue of laser equipment manufacturing enterprises, but laser equipment manufacturing enterprises have a very large space for development.
Laser cutting technology Introduction: Laser cutting is one of the thermal cutting method using a focused high power density laser irradiation parts, so that the irradiated material rapidly melting, vaporization, ablation or achieve ignition, and by means of high-speed air stream coaxial with the beam blowing molten material, in order to achieve the cut workpiece. Small and medium-power laser processing technology is advanced manufacturing technology. Compared to the traditional processing technology, small and medium-power 30000mw laser pointer processing methods for the non-contact processing, no "tool" wear machining, processing speed, no noise, no pollution, is the green manufacturing technology; in addition, the laser processing can be personalized, diversification process, because no mold, shorten the processing cycle, saving processing costs, improve processing efficiency.
Laser means that the material produced by stimulated emission light, laser light having a good monochromatic, coherent and directional, the characteristics indicated by the frequency or wavelength (λ). Laser processing is the use of a burning laser pointer beam interaction with the material properties of the material (including metallic and non-metallic) surface treatment, cutting, welding, drilling and micro-processing of a processing technique that involves light, mechanical, electrical, materials and testing and many other subjects
.Trade advantages and characteristics of small and medium power laser cutting technology alternatives advantages: technical and economic advantages; energy-saving and environmental protection, green manufacturing advantages.Industry Chain Analysis: Impact of the upstream industry. At present, the Chinese small and medium power laser cutting equipment, laser products raw materials, lenses and other precision devices mainly rely on imports; most other raw materials and accessories are available from an adequate supply of the country. Downstream industries impact on the industry. Wide range of services in the field of the industry, upstream and downstream industries and enterprises involved in more traditional manufacturing enterprises, the downstream industry development of the industry have significant traction and driving action, and therefore development of downstream production enterprises directly affects the industry market space. Currently, a number of Chinese industrial policy introduced to promote the transformation of traditional industries and industrial restructuring, transformation and development of the downstream industry provides a good policy support, is also the industry provides a historic opportunity to expand the market.
Related policy analysis: "national long-term science and technology development planning (2006-2020)" in the fifth part of the list of China will focus on the development of the eight cutting-edge technology, 2000mw green laser technology ranked seventh. In May 2009, the State Council has issued a "equipment manufacturing industry restructuring and revitalization plan", "light industrial restructuring and revitalization planning" and the textile industry restructuring and revitalization plan, "stressed the equipment manufacturing industry, light industry and textile industry equipment independent of the support, promotion of advanced manufacturing technology, the transformation of the mode of industrial development, adjusting the industrial structure. The above planning will help to accelerate the promotion of laser equipment in light industry and textile industry. In February 2009, the State Council issued the electronic information industry restructuring and revitalization plan, "the plan proposed to vigorously promote the business and service mode innovation, active use of information technology to transform traditional industries, in a new application to promote new growth. The plan will promote the development of laser equipment industry closely combined with electronic information technology, accelerate the pace of the transformation of traditional industrial 500mw green laser equipment products.
Small and medium-power laser cutting market: Over the past decade, with a new maturity by laser processing technology, highlighting the advantages of laser processing gradually reflected in all sectors of the global laser equipment manufacturing industry to achieve rapid growth. According to statistics, from 2001 to 2008 compound annual growth rate reached 13% in 2009 due to the global economic crisis, the global laser equipment sales decline, into the recovery phase after 2010, to achieve a slight increase in sales. In recent years, China has increased efforts to implement laser processing technology industry, laser equipment enterprises gradually into production as an alternative to traditional processing methods or new technology, promote the steady development of the laser industry. 2001 laser equipment market sales of only 632 million yuan, in 2008 more than 30 billion yuan, laser equipment market has shown steady and rapid growth.
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Bicycle with LIDAR
Summer, for bicycle lovers, nothing beats the winding road Sahuan children laps, more people feel comfortable a pleasant. But the road from time to time to jump out of the vehicle it is very hard to detect, no matter how frequently you observe the rearview mirror, even subconsciously always back squint, but it will still be "swishing" exceed scared is not a laser 3000mw car.
Summer, for bicycle lovers, nothing beats the winding road Sahuan children laps, more people feel comfortable a pleasant. But the road from time to time to jump out of the vehicle it is very hard to detect, no matter how frequently you observe the rearview mirror, even subconsciously always back squint, but it will still be "swishing" exceed scared is not a light car.In fact, the ideal is to install a laser 5000mw radar (commonly known as "lidar", and it works the same as ordinary radar, but the system emits a laser, not a conventional radio waves), its range fully meet the requirements, but the price is it is ridiculously expensive, on the bike, it is inevitable that some "overkill."
However, a start-up company from Oregon Bender's PulsedLight, introduced a simplified version of the laser radar products --Lidar-lite, like a "timely" to solve the security problem Paul and I have been worried. This relies on crowdfunding launch laser radar detectors, although less than half the size of a deck of cards, but a range of up to 40m, detection accuracy is within ± 2.5cm range, all for only $ 89.Receive the package the first time, Paul can not wait to fiddle opened up. But a little "wonderful" is that this lidar four signal lines are all wrapped in black jacket, the subsequent operation is very unfavorable, so Paul in the first line of each affix different labels, in order to facilitate the distinction. Here we also need to purchase a microprocessor containing Arduino board and connected 30000mw laser pointer radar, finally connecting the circuit board PC via a USB cable, driver software provided by the official line operation, the system is able to adjust to normal work can be. Finally, Paul will contain a four alphanumeric display board access Arduino, a simple programmed, a compact and lightweight rear warning system even if "done" the.
The next most important thing is, you have a whole in the rear of the car can be placed lidar small frame, but also to ensure high speed and severe jarring will not "disintegration." Although this is not an easy job, but PulsedLight engineers in addition to the official website released the operating manual, data sheets and simple Arduino program instructions for reference, but also provides a protective shell production parameters of laser radar 3-D model. Paul raw data Openscad the model was appropriately modified and made by 3D printer.
In addition to the 20000mw laser pen radar placed within a housing, a microprocessor, there is a 6mm thick foam lining, it can play the role of shock protection device. Another point to note is that the entire system is fixed to the car, should the laser radar lens slightly tilted a few degrees to the left, in order to prevent long-range laser transmission bifurcation, to monitor the impact on the rear of the car.
Finally, three DC inverter Paul chose to shunt and AA batteries replaced two batteries contain a rechargeable lithium battery, the maximum output voltage of 7.4V, by 7805 the regulator output voltage can be reduced to 5V, meet the job requirements throughout the lidar system. Although he abandoned the body more tiny, more efficient AA batteries, but this performance and a pair of AA lithium batteries is almost the same. So, headache supply problem finally solved it!PulsedLight offering a simplified version of the 10000mw blue laser radar and an Arduino microprocessor has good compatibility, the use of lithium batteries to power for the entire system. Additional LED display mounted at the handlebar, the rider can clearly inform, to the rear of the car away.
After that in the end the effort to build this Paul car warning system in the end tube regardless of use? In fact, there to be test of time. Paul told me that when he properly debug the system, see LED display at the handlebar display the signal at the rear 35m have a car approaching, because too excited, even forget the car moved to the roadside. In addition, he is also preparing to re-create a protective shell, you can easily adjust the angle of the laser emission, and have to pondering, how can be made without dismantling the entire system case, can easily to charge the lithium battery.After several days of experience, Paul found 2000mw green laser radar range to be smaller than expected, especially in poor sight curve, probe the effect is not ideal. He also said that the system is very easy to send out false alarms, and in order to reduce the false alarm rate, the speed will only decrease. Although there are many shortcomings to be excavated, but this simplified version of the laser radar has actually regarded as a good cost-effective traffic safety product. Of course, we should face a more complex road conditions, advise you still can not rely too much on the radar judgment. At this time, the muscles taut, erect ears, see the machine to hide is the best policy.
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