|
|
|
| Tips for Choosing Car GPS Navigation |
| |
Tip 1: Select Volkswagen recognized brand navigator, because the brand is a guarantee of quality, but should not blindly follow the trend to buy brand-name, for example, some in the U.S. and European markets outdated re-selling products in the domestic market, in fact, are outdated things, cost is not high , the same price you can buy domestic products feature higher. In addition, some unknown brand but also to seize the market at low prices, because some people covet cheap, then regret it after use. Therefore, we should choose is recognized by the public, has a profound market base, strong product development capabilities of the brand.
Tip 2: Star Search faster good navigator general search star less than a minute, some cottage brand navigator search star to two minutes or so, and some even more ridiculous almost ten minutes to go to the destination not found to stars, so not only did not help navigator also villain.
Tip 3: Pay attention to the navigation map search star speed, indicates a good configuration. Software is equally important, useful map is the key. In fact, every map have their own advantages, Kay Rucker, Tomine international, inter-city links are good. Pay attention to look for genuine map.
Tip 4: To provide comprehensive after-sales service can be said is that people are most concerned about aspects such as system software upgrades, map revision, battery life and so on. Brands generally have a relatively sound service system, consumers can enjoy the satisfaction of service. Some well-known brands in the service center, when the user needs Depot Repair Navigator, it will provide a backup machine for users.
Comprehensive analysis, choose a practical car GPS essentially covers more of these aspects. Of course, now the car GPS also focus on multimedia, personal development, such as tailored specifically for women slim style car GPS; such as a collection of mp3, mp4, picture browsing, e-books and other functions, there are some added FM transmitter function or Bluetooth, recently emerged on the market with a number of camera-car GPS. These are based on consumer preferences and their positioning requirements on prices and flexible options.
High qulity car GPS navigation also can find here:
BMW Navigation DVD: http://www.autocarplaza.com/bmw-aftermarket-navigation.html
AUDI Navigation: http://www.autocarplaza.com/audi-navigation.html
| |
| 7月23日（火）18:34 | コメント(0) | Hobby | 管理
|
| 3D Elastic Touch Screen |
| |
Most touch screen only provide users with 2D experience, but the touch screen of the Massachusetts Institute of Technology (MIT) Media Lab Hande (Dhairya Dand) and Sligo (Rob Hemsley), Homewood invention has brought a whole new dimension. It is Obake, one can completely change all other touch screen.
The Obake silicone rubber is a stretching of the touch screen (in FIG screen) made of elastic material itself is two-dimensional, but you can use a three-dimensional manner to manipulate anything on this screen.
How does it work? It is equivalent to an elastic surface interaction: When you press or pull this flexible screen, the depth of the imaging head (the depth camera) will measure your action and inform linear Rev. movable device (Figure linear actuator), a corresponding manner shaping the shape of the flexible display. For example, if you do a pinch pull the action, the depth camera will measure it, this part of the linear actuator causes the elastic screen prominent, like you pulled out of a hill.
Hande said the Obake a 2.5-dimensional interface, because you can stretch the the elastic screen, but the projector to the Projector (using the figure) elastic screen interface 2D.
Hande said that the reason why the display has been unable to escape the realm of 2D, because we are accustomed to a combination of mouse + graphical user interface power supply. In view of the characteristics of the mouse, as well as its interaction with the things we see on the screen, this combination can not support true 3D. Hande explains, 3D interactive display to be successful in the past is not, because people are trying to use gestures learned in the 2D interface to a whole new dimension, so they need to create a new gesture specifically for the 3D environment, but these gestures can not be too unfamiliar, allows users to find it difficult to grasp. That is why they the elastic screen reasons: because we are very familiar with the manipulation of the elastic body and the nature of the gesture is very similar with the touch screen gestures, so we will feel more comfortable using it.
| |
| 5月10日（金）15:08 | コメント(0) | Hobby | 管理
|
| Lead-acid Battery Meet the Environment |
| |
The Ministry of Industry and Information Technology, Ministry of Environmental Protection and other five ministries jointly issued "on the promotion of the development of lead-acid batteries and secondary lead industry norms opinions" (hereinafter referred to as "views"). Target by 2015, waste lead-acid battery recycling and comprehensive utilization rate of more than 90%, the lead recycling accounted for more than 50%, promote the formation of the National Lead resources recycling system.
It is understood that the "opinions" to increase the elimination of backward production efforts and support of technology research and development, called for an immediate phase-out of the opening ordinary lead-acid battery production capacity, and not be eliminated by the end of 2015 by the Environmental Protection verification, do not meet the entry conditions backward production capacity; strengthen bipolar sealed battery, super battery, foam graphite battery new lead-acid battery technology research and development, promote wound the colloidal electrolyte lead-acid battery technology; accelerate the scale of waste lead-acid batteries harmless regeneration the development and application of key technology and equipment.
In order to regulate the behavior of an enterprise environment, the requirements of the "opinions" lead-acid battery supplierand secondary lead companies to build a perfect lead smoke, lead dust, mist and wastewater collection, treatment facilities, and to ensure the stable operation of the facilities and discharge; step-by-step installation lead-line monitoring facilities and networking with the local environmental protection department, day-to-day monitoring of the monthly report. Strict implementation of solid waste storage, disposal and transfer of hazardous waste manifest system, leaded waste, sludge and other hazardous waste should be required to entrust a qualified units for safe disposal. "Opinions" that will be developed in the future "waste lead-acid battery recycling management approach" to further implement extended producer responsibility system.
To regulate individual traders waste lead-acid battery recycling behavior, crack down on illegal dismantling and the indigenous refining lead behavior, "Opinion", and improve hazardous waste operating license system to encourage production enterprises through its retail network organization recycling of waste lithium battery, Support for production companies, sales companies, professional recycling companies and secondary lead companies to build a recycling network. Strengthen the collection of waste lead-acid battery, storage, transport the whole process of supervision. Support large-scale, standardized Lead recycling demonstration projects.
"Opinions" also pointed out that "Twelve Five" period, the central government phase-out of lead-acid battery business nationwide backward production capacity incentive funds will eliminate backward production capacity to support and special funds to support efforts to increase the central finance clean production, focusing on support in line with access conditions, emissions compliance enterprise use of advanced energy saving and environmental protection technology to transform the existing production capacity; improve the regeneration of waste lead-acid battery production secondary lead companies to implement of VAT Jizhengjitui 50% preferential tax policies, and further research Lead Industry incentives, increase tax support.
| |
| 4月23日（火）15:20 | コメント(1) | Hobby | 管理
|
| 2013 Lithium Battery Applications |
| |
Although the market is looking forward to the new energy vehicles, but can not break through key technologies, the lithium battery in the new energy vehicles in 2012 not yet in full swing. However, the rapid growth in demand for benefiting from mobile phones, tablet PCs and other portable appliances, lithium battery enterprises in 2012 achieved good results in this area. The performance of the lithium battery production companies presented a mixed picture.
And the outlook for the lithium battery industry in 2013, the market is more than that, and portable appliances demand or still maintain a rapid growth, will continue to drive the production of lithium batteries, lithium battery applications in the field of new energy vehicles remains to be seen.
Enterprise performance differentiation
In 2012, the production of lithium batteries accelerating trend, lithium batteries began to play a more important role in the environmental pressure.
Public data shows that, since 2012, the lithium battery production average monthly year-on-year growth rate of more than 25% higher than the previous year growth rate. In November, the output of lithium batteries continue to maintain a high growth year-on-year growth of 43.53%.
Formation driven by the growth in production of lithium battery manufacturer performance. Tian Qi Li industry forecast for full year 2012 production situation in 2012 three quarterly judgments Company 2012 annual changes in the net profit attributable to shareholders of listed companies by 0-30%.
Tian Qi Li pointed out in the report, from January to September 2012, the company achieved net profit attributable to ordinary shareholders after deducting non-recurring gains and losses of 31.7119 million yuan, a year-on-year growth of 21.89%, with the growth and sale of lithium products, the market demand The price rose steadily, will have a positive effect on the growth of the company's operating results.
Another lithium battery production the leading enterprises Ganfeng lithium industry is also forecast in the 2012 quarterly and annual results of changes in the range of 5% -35%, net profit of 57 million -7329 million interval change. Ganfeng Lithium pointed out in the description of the changes in performance, the sales revenue of sustained and stable growth, the main business profit growth.
But there are some involving lithium enterprise due to changes in upstream costs and other reasons, the performance is not satisfactory. According to the statistical software Flush with the concept of A-shares lithium enterprises totaled 67, of which 44 companies announced the results notice or results of Letters, a total of 19 companies Yejiyuzeng 25 corporate performance pre Less.
Fenghua Hi-Tech the the performance forecast that is expected to 2012 over the same period last year decreased by 51.39% -57.46%. Mainly due to the second half of 2012, subject to the impact of the Electronic Components market demand is lower than expected and the company's main product structure adjustment, the company's products production can play a shortage, while product prices fell, leading to the performance of the company fell.
The field of electric bicycles can be expected
2013, it is expected that the demand for portable appliances or still maintain a rapid growth, which will continue to drive the production of lithium batteries lithium battery applications in the field of new energy vehicles remains to be seen. "States Securities industry researcher Xiao Shijun told the China Securities Journal reporter.
According to the China Electronic Components Industry Association predicted that the next three years, the global mobile phone shipments will maintain a compound growth rate of more than 10%, while laptop shipments compound growth rate will exceed 14%. The next few years, consumer electronics lithium battery market is expected will be accompanied by high growth and stable growth of the laptop and the mobile phone market.
In addition, the lithium battery applications in the field of electric bicycles or improved in 2013. Recently, the Ministry of Industry No. 70, 2012 announcement Approved for electric bicycle lithium ion battery Specifications Dimensions industry standard, formally implemented from June 1, 2013. The standard from Dimensions, nominal voltage, installation, charging and discharging interface aspects of external, non-folding electric bicycle use lithium-ion battery products standardization.
| |
| 3月21日（木）18:10 | コメント(0) | Hobby | 管理
|
| Geared Motor Anti-oil Spill Measures |
| |
First, Change the structure is unreasonable because it is designed to cause instances of oil spills is a lot, and therefore in the design of the box and lid structure to ensure that it has sufficient rigidity.
Second, balanced deceleration the motor box inside and outside air pressure. Geared motor should equalizing device. The design of the vent and the vent plug must be reasonable.
Third, Reducer oil return should be smooth. Oil return fluency is to make possible outside the oil leakage unobstructed flow back into the box to go.
Fourth, to ensure the quality of the installation, According to the data of the survey report shows that many Geared Motor Oil spills are due to installation quality is not guaranteed.
Fifth, eliminate the the deceleration motor drain-source: to eliminate the drain-source, it is necessary to achieve the system maintenance classes before classes found oil spills deceleration find out the reasons, the use of appropriate ways to deal with, and prevent further leakage.
Sixth, prevent loosening, timely replacement of failed parts, some deceleration of poor working conditions of the dc motor manufacturer, the large vibration likely to cause the fastening screws loose seal structure.
Seventh, lubrication management : gear oil immersion too deep, gear improper lubrication, the scroll bearing grease diluted, the amount of oil and viscosity of the lubricant discomfort will cause the leak. , Winter gear motor maintenance, should be used in low viscosity lubricant, and the summer temperature is higher, should be used and the viscosity of the lubricant.
Eighth, the adoption of new technologies. With the development of science and technology, the various components of the material are a great development, if coupled with new products and general fluid lubricant the anaerobic adhesive seal can guarantee deceleration clip normal operation for several years without maintenance and refueling. Geared Motor Oil spills are a relatively common problem, treat the gear motor oil spill, should be dealt with according to different situations.
| |
| 3月15日（金）17:34 | コメント(0) | Hobby | 管理
|
| White LED Driver with Protection |
| |
White LED Driver with High Temperature Protection
Circuit driving a high-power white LED (WLED), open or short circuit fault occurs when the temperature is too high, and thermistor will turn off the LED. If you work outside the maximum operating temperature range any IC of life will be shortened. When the junction temperature exceeds a certain value, it will be permanently damaged. Philips Lumileds LUXEON high power LED module is manufactured in the thermally enhanced substrate, thus heating will be less. This material improves thermal performance, and allowed to continue working in the high-current, to meet the requirements of high-brightness lighting . However, for applications such as camera flash, is to avoid damage to the device power consumption continue to work, you need to provide additional thermal protection function.
The circuit in Figure 1 include a suitable camera flash applications charge pump regulator (IC1), the device for up to eight white LED (WLED) adjust the current. Paralleling all eight drives as a single 1W LUXEON Star high-output WLED module provides up to 480mA. When the open-drain input EN is pulled to ground, IC1 enters shutdown mode.
Circuit driving a high-power WLED, LED will turn off when the temperature is too high, and the thermistor open or short circuit fault
Can take advantage of the open-drain comparator (IC2), a thermistor and internal reference with a dual space is compact and extremely cost-effective to build a thermal shutdown circuit. VTHERM drops to below 1.2V internal reference voltage, the comparator A EN is pulled low to ground. When the high temperature of the thermistor (R2), will perform the operation. Comparator B is used to provide an open circuit failure protection function, that is, when the thermistor contact is opened, EN is pulled low. Thermistor open circuit failure occurs, VTHERM R1 pulled up, so that the comparator B to pull EN. Resistor divider R3-R4 sets the open threshold voltage, resistors R1 and R2 sets thermistor thermal shutdown threshold.
| |
| 3月6日（水）16:34 | コメント(0) | Hobby | 管理
|
| Epistar Bottomed Out Q2 will Profit |
| |
LED Chip Giant Epistar: Bottomed Out Q2 will Turn Profit
LED chip makers Epistar times Huga end of last year, and 100% held subsidiary, Deutsche Securities, the latest report issued by the 4th quarter of last year, will set aside about 4 to 5 billion disposable inventory Epistar the impact of loss, it is estimated that Epistar quarter loss per share will be extended to 0.51 yuan, but this will be Epistar bottom inventory loss column after mentioning the previous quarter, it is estimated that the first quarter of this year will see the loss reductions, and the second quarter will by the turnaround, the earnings per share for the year is expected to stand back above 1.5 yuan remained a "buy" rating and a target price of 70 yuan.
Epistar last year in the fourth quarter due to hand Huga will therefore set aside about 4 to 5 billion in one-time inventory losses, estimated to the Epistar Affected quarter loss per share will be expanded to 0.51 yuan, the loss rate is higher than Germany, said, expected, it will be its last year earnings per share reduced from 0.08 yuan to $ -0.51 entire inventory loss after Provision optimistic about the merger Epistar this year there will be a new beginning.
Deutsche analysis, affected by the industry, the traditional off-season and the average unit price fell Epistar is estimated this year's first quarter revenues will continue to decline by about 9% compared with the fourth quarter of last year, it is estimated that the gross profit margin of the first quarter of this year, but after the inventory adjustment will surplus rose to 10.6% from 4.7% in the previous quarter, the first quarter loss per share range will be narrowed to 0.19 yuan, estimated that by the second postseason, Epistar will turnaround and share for the year is expected to stand back to the top of 1.5 yuan.
In addition, the performance from the industrial point of view, the market competitiveness of Germany optimistic Epistar full. Deutsche analyze and enhance the luminous efficiency and new product design, it is estimated that LED Factory Price 10 to $ 15 LED light bulbs will be launched this year , which will also become a major market growth momentum this year prompted LED lighting , led lighting components market demand will advance in the second quarter to the third quarter of reaction, Epistar With the huge size of the market, advanced technology as well as on the LED industry chain partners will benefit from the rapid development of LED lighting.
| |
| 2月28日（木）12:39 | コメント(1) | Hobby | 管理
|
| Classical Shape LED Table Lamp |
| |
 LED desk lamp LED lighting House brought back to the ancient shape, called Miconos, by Ernesto Gismondi design, hand-blown glass shade and chrome metal lighthouse, a fully transparent spherical lampshade built LED energy-saving light bulbs, heavy metal and transparentcombination of glass, has a distinctive style of the industrial Revolution.
Lamps unique heavy sense of history, as from the lamp just invented that era. The exaggerated shapes people Lenovo-heavy beginning divers in this unique style LED table lamp following reading, whether it would be more fun reading it.
| |
| 2月21日（木）15:28 | コメント(0) | Hobby | 管理
|
| Solution to High-power LED Heat - 2 |
| |
Perhaps in the 20 ~ 30lm / W LED, these problems are not obvious, but, when faced with high luminous power LED above 60lm / w, you need to think of ways to solve. The impact of thermal effects, and absolutely will not the only LED itself, but to be the entire application products has been a problem, LED, if they can be resolved in this regard, NA, can also reduce the heat of the application of the product itself burden. Therefore, in the face of continuing to improve the current situation, how to increase the thermal capacity, is the current stage of the urgent need to overcome the problem. By all accounts, in addition to the problems of the material itself, but also from the chip to the heat resistance, thermal structure, and packaging materials packaging materials to the PCB board heat resistance, thermal conductivity of the structure and the cooling of the PCB structure These are required for the integrity considerations. For example, even if able to resolve from the chip to the thermal resistance between the packaging materials, but a bad cooling effect from the package to the PCB board, is also caused by the temperature rise of the LED chip, the phenomenon of the light emitting efficiency is lowered.
The encapsulation material change white LED life of up to 4 times the original
The heat problem is not only the impact of the brightness performance and emerging challenges, but also the life of the LED itself, so in this part, LED constantly developing packaging materials to cope with sustained increase in LED luminance arising impact .
Used as the epoxy resin of the encapsulation material, heat resistance and relatively poor, may appear before the arrival of the life of the LED chip itself, an epoxy resin has appeared discoloration in the past, therefore, in order to improve the heat dissipation, it must allow more the current released. In addition, not only because of the thermal phenomena interested epoxy impact of the epoxy resin, or even short wavelength will cause some problems, it is quite easy because the epoxy is the short wavelength light in the white light LED in the destruction, even low power white LED has been caused by the destruction of the epoxy resin, not to mention the high power LED contained in the short wavelength light, deterioration naturally also accelerated, or even the life of some products in the continuous lighting after less than 5,000 hours.
A silicone resin can be dispersed to the blue and near ultraviolet light, as compared with an epoxy resin, a silicone resin can be suppressed to the phenomenon of deterioration of the material because of the current and the short wavelength light, to ease the rate of decline of the light transmittance. In the current application, almost all of the high-power LED product has been used in silicone resin as a material of the package, for example, with respect to the light of a wavelength of 400 ~ 450nm, epoxy about the number of bits percentage, but The silicon resin 400 ~ 450nm light absorption less hundredth this gap, making the silicone resin has excellent performance in anti-short-wavelength.
Life expressivity, silicon resin can extend the white LED service life of the target, and can even reach more than 40,000 hours of service life. But not really suited to do the lighting application has yet to be research, because the silicone resin is a soft flexible material in the encapsulation process, you need to pay special attention to the application, in order to design the most appropriate application of technology.
The Nichia Chemical development of the white light semiconductor laser, at the end of the LED chips are no longer using the fluorescent material, but the light-emitting portion and the portion of white light generated handled separately using 200mw blue violet semiconductor laser, issued 405nm wavelength of light, the blue the diameter of the color or blue-violet semiconductor laser and the optical fiber surface to make the connection, so that the white light emitted from the other surface coated with a fluorescent material fiber, while the generated white only 1.25mm, this area of only the same amount of light, the white LED 1 / 20, the required power consumption of less than 0.1W, so do not need to think too much in the heat part.
| |
| 1月15日（火）11:36 | コメント(0) | Hobby | 管理
|
| Solution to High-power LED Heat - 1 |
| |
Today, the white LED is still there luminous uniformity is poor, and the closed material of life long problem, can not play the white led application is expected advantages. However, the demand perspective, not only the general lighting purposes, with the wide range of mobile phones, LCD TV, automotive, medical and other applications, so that the most appropriate development of stable white light LED technology research on a wide range of attention.
Improve white LED luminous efficiency, there are two directions, one is to increase the area of the led chip to increase the amount of light emitted. Second, several small chips packaged together in the same module.
To increase the amount of light emitted by increasing the chip area
Although the area of the LED chip to be large to be able to obtain a much higher brightness, but over a larger area, in the application process and results will appear counterproductive. Therefore, for such a problem, the part of the LED industry according to an electrode structure improved and the structure of the flip chip, the chip surface modified to achieve the luminous efficiency of 50lm / W. For example, in the white LED portion of the flip chip package, since the light-emitting layer is very close to the vicinity of the package, the light emitting layer is dissipated to the outside when the electrode is not obscured, but the drawback is that the generated heat is not easily dissipated.
The use of encapsulation several small area LED chips rapid increase in luminous efficiency
LED chips and a large area compared to the use of small-power LED chip packages into one module, this is to be able to quickly achieve high brightness requirements, for example, Citizen will eight small LED package together, so that the luminous efficiency of the module is reached 60lm / W, called the industry's first.
Addition to the the chip light extraction efforts needs to be done, and expect to be able to obtain a higher light efficiency, part of the package is necessary to do some improvements. In fact, for every multi-project will increase a light extraction efficiency bring some impact However, this does not mean that, because the encapsulation process will increase the higher light loss, like flat light source Japanese OMROM developed technology, we can greatly enhance the light extraction efficiency, such a structure is the light emitted by the LED, using LENS optical system and the reflective optical system to make control, so OMROM called "Double reflection". With such a structure, the light loss may be caused by the traditional shell-type package such as the LED for wide-angle reflection of the package to obtain a higher light efficiency, further processing is formed on the surface of Mesh form a double reflection effect, in such a manner can be obtained a good light extraction efficiency. Because of this special design, the use of the reflection effect to achieve high light-extraction efficiency of the LED, the main purpose is for LCD TV backlight applications.
Increase in the importance of the encapsulating material and fluorescent material
If you expect to be used as the LCD TV backlight applications, the the NA problem will need to overcome more. Because the LCD TV of the continuous use time is as long as a few hours, or even 10 hours, therefore, due to such a long period of use cases, the white LED used as a backlight must have not generated because of the continuous use luminance attenuation.
High-power white LED, has published its luminous power is a low-power white LED brightness dozens of times, because the use of high power white LEDs instead of fluorescent lamps as lighting equipment, a must overcome difficulties is the brightness decreasing situation. For example, white LED prolonged continuous use 1W of cases, will cause continuous use the brightness of the half time of gradually reducing the phenomenon, not only a high-power white LED will be such a situation, low-power white LED also the existence of such problem, but because of the different applications of low power white, so, and will not therefore particularly highlights the troubled.
The amount of heat of the high power led is ten times the number of low-power LED and, therefore, will appear as the temperature rises, while the problem of reduced luminous power, Therefore, in the development of the the high packaging material be able to heat resistance, relative significant very important .
| |
| 1月15日（火）11:24 | コメント(0) | Hobby | 管理
|
(1/3ページ)
>1< 2 3 最後
|
|
フォトログ表示
