The virtual reality industry you misunderstood: Take you to know VR/AR

Why do you want to ask the world electronics, listen to me to the Longmen array. A few days ago, I chatted with my uncle. He asked me what happened to the market of VR and AR recently. I was a little surprised at the time. I said that my uncle, you are all eighty years old, and you know VR/AR, but I also know that because my uncle is trading stocks, it must be which stocks have announced the industry. Indeed, today's VR/AR does make a lot of people, women and children know...

In the technology circle, the world's top technology companies, Google, Facebook, Apple, Microsoft, BAT are doing this thing, as if you are not engaged in VR, you are embarrassed to say hello to others to say that you do technology. In the financial circle, Stormwind Technology turned into a eternal demon stock because of a storm mirror. Crystal Optoelectronics, LeTV, and Ou Feiguang were favored by the capital because of the VR/AR concept. In the circle of friends, all kinds of so-called black technology articles about VR/AR can't move to another enterprise with a valuation of 10 billion. In short, VR is like a rain, AR is like a whisper.嘈嘈 切 切 错 杂 VR, VR / AR falling jade plate. Getting VR/AR to replace the smartphone soon will create a new round of technological revolution for mankind.

The virtual reality industry you misunderstood: Take you to know VR/AR

That AR, VR, but what is it, what is the difference between them, and what effect will it have on human life and the future?

Through two weeks, the author interviewed more than a dozen top talents in the AR/VR industry. Finally, I helped everyone to learn slowly, and after combing the taste, I will take a look at you and bring you all the VR and AR.

VR English full name Virtual Reality, Chinese name virtual reality, is to put a screen on your face, create some virtual things, deceive your kind and pure eyes, simply say VR is to re-simulate the world.

AR English full name Augmented Reality, Chinese name augmented reality technology, is to superimpose VR reconstructed virtual items, information and data in the real world. In short, AR is to add some virtual elements in the real world.

Conceptually we know that AR and VR are actually two things, and the application scenarios and principles are different. Today, let's talk about the historical process of VR virtual reality, the development of the status quo, and the future impact on humans.

Is VR a pseudo-demand?

In 2016, it has been recognized by the technology industry as the first year of VR. It is the first year that virtual reality has officially entered the market, and it is a means of creating momentum for VR.

Nowadays, market paradox is divided into two major factions. The pessimistic faction says that VR is more about capital speculation at this stage. To realize a complete VR system, not only does it require a kind of immersive viewing method different from the two-dimensional screen, but also needs to be able to The VR technology is too primitive for the way people interact and the digital content they match. The optimist counters that VR is imperative, because things that cannot be solved on the hardware can be solved temporarily by algorithms. As long as there is a sufficiently powerful hardware system, it will drive the evolution of the algorithm. Anyway, the two factions have their own reasons. Let's review the history of VR.

VR is really not a new thing. In the 80s and 90s, the VR concept has been fired several times. Especially in the late 1990s, at that time, it was also a wave of Silicon Valley technology, and Nasdaq was crazy. At that time, the most famous company called Virtuality Group, launched a VR game system, a bit like the current dance machine, occupying a large area, can play 3d FPS games, but this set of equipment sells tens of thousands of expensive, the device The price/performance ratio of the immersive experience is also very low. The picture is basically mosaic, and the tiger and the mouse are not clear. Finally, the project is bankrupt. With the bursting of the US technology bubble, the bubble in the entire industry has also broken, and VR has slowly disappeared in the scientific and technological circles. In fact, the technology was not hard at the time, including hardware, software, and rendered images were too poor, and there was not enough content to support it. There was no way to form a complete industrial chain.

So why is there always someone who constantly creates the concept of VR heat? What magic does it have for all kinds of people across the border to have confidence in him? I believe that he definitely has something in common with home computers and smart phones, which is a way of life that can completely subvert humanity. If this is the case, even if the VR market is still going to take a while, everyone is willing to wait in line for the outbreak. What exactly is VR going to subvert us?

First, everyone needs to pay for communication while getting information. This cost can be time, it can be brain power, it can be imagination, or it can be a reserve of knowledge. Since the beginning of the 21st century, after the emergence of the Internet, the emergence of social platforms, whether it is forums, blogs, and Weibo WeChat, the information above is explosive. Internet users can get a lot of information with just one eye open every day. Traditional media like TV newspapers can't do this at all. So social platforms have replaced traditional media and become the main source of human access to information. There have been news of various traditional media bankruptcy and large-scale layoffs.

The Internet has developed to a certain stage, and everyone's time has become more fragmented. It has become difficult to communicate with words. Because the cost of decoding this information is high, is there a more relaxed way? At this time, the popularity of pictures, people are more willing to use expression packs, use pictures to communicate, after all, others will understand. And compared to reading text, the picture will bring more intuitive feelings, so that you can save the process of thinking in your mind. Of course, if we use the information to make video, we will get lower cost. We don't need to read the text, we don't have to rely on a picture to imagine what a scene is like, which also becomes more time-saving and labor-saving.

What should we do if we want to further reduce costs in the future? We will think about whether we can create a virtual world, then enter this virtual world, become anyone, go anywhere, communicate with anyone, experience different life, and then classify and summarize these virtualized data into one. The tool operates. This comes out of VR, so I think VR is more than just a product, it's a way to change the way people get information. It can provide extremely low cost and give you the most intuitive information experience. This is the true core value of VR. In other words, the core reason why people are willing to fire VR into such a fire is that it does have the genes that subvert the way humans get information.

Surge Protection Device SPD

Product Description


SPD Surge Protective Device,Lightning Surge Protector
Surge Protection Device (SPD)


It is a device used to limiting instant surge voltage and discharge surge current, it at least including a non-linear component.

Surge protective Device Model Selection

With the impact of international information flow, the rapid development of microelectronic science and technology, communication, computer and automatic control technology, make the building start to go for high quality, high functional area, formed a new building style-intelligent building. As inside the intelligent building there are lot of information system, <<Building lightning protection design norm>> GB50057-94(2002 vision)(hereafter brief as <<lightning protection norm>>) put forward the relative requirement to install the surge protective device, to ensure the information system safely and stable running.
SPD essentially is a equipotential connection material, its model selection is according to the different lightning protection area, different lightning electromagnetic pulse critical and different equipotential connection position, decide which kind of SPD used in the area, to achieve the equipotential connection with the common earth electrode. Our statement will based on SPD's maximum discharge current Imax, continuous operating voltage Uc, protection voltage Up, alarm mode etc.
As per << Lightning Protection Norm>> item 6.4.4 stipulation "SPD must can withstand the expected lightning current flow and should confirm to the additional two requirements: the maximum clamp voltage during surge across, capable to extinguish the power frequency follow-on current after lightning current across." That is the value of SPD's max. clamp voltage add its induction voltage of two ends should be same with the system's basic insulation level and the equipment allowed max. surge voltage.

SPD for Power Supply System Series Selection Guide

The installation of SPD at each lightning protection zone, according to the standard of low voltage electrical appearance, make classification of electrical equipment in accordance with the over voltage category, its insulation withstand impulse voltage level can determine the selection of SPD. According to the standard of low voltage electrical appearance, make classification of electrical equipment in accordance with the over voltage category as signal level, loading level, distribution and control level, power supply level. Its insulation withstand impulse voltage level are:1500V,2500V,4000V,6000V. As per to the protected equipment installation position different and the different lightning current of different lightning protection zone, to determine the installation position of SPD for power supply and the break-over capacity.
The installation distance between each level SPD should not more than 10m, the distance between SPD and protected equipment should as short as possible, not more than 10m. If due to limitation of installation position, can't guarantee the installation distance, then need to install decoupling component between each level SPD, make the after class SPD can be protected by the prior class SPD. In the low voltage power supply system, connecting an inductor can achieve the decoupling purpose.
SPD for power supply system specification selection principle
Max. continuous operating voltage: bigger than protected equipment, the system's max. continuous operating voltage.
TT System: Uc≥1.55Uo (Uo is low voltage system to null line voltage)
TN System: Uc≥1.15Uo
IT System: Uc≥1.15Uo(Uo is low voltage system to line voltage)
Voltage Protection Level: less than the insulation withstand impulse voltage of protected equipment
Rated discharge current: determined as per to the lightning situation of the position installed and lightning protection zone.
SP1 Series

Normal Working Conditions
-Altitude not exceed 2000m
-Ambient air temperature:
Normal range: -5ºC~+40ºC
Extend range: -40ºC~+80ºC
-Relative Humidity: 30% - 90% under indoor temperature condition
- At the place without obviously shaking and shock vibration
- Non-explosion danger medium, non-corrosion gas and dust ( including conductive dust)

Classification

-As per Nominal Discharge Current:
5,10,20,30,40,60KA(8/20µs)
- As per Maximum continuous operating voltage:
275V,320V,385V,420V,440V,460V
- As per to poles
1P,1P+N,2P,3P,3P+N,4P
- As per auxiliary functions:
a. With remote signal output ( remote alarm function)
b. Without remote signal output

Selection Principle

- The continuous applied voltage on the two terminals of SPD should not more than the maximum continuous operating voltage Uc value;
- The voltage protection level Up of SPD should less than the maximum impulse withstand voltage of the protected equipment;
- As per to the different earthing system and protection mode to select the specification accordingly;

Product Features

1, built-in over-current overheating, temperature control circuit technology.

2, the module design, easy installation, online replacement.

3, low leakage current, fast response time, low residual voltage.

4, alarm indication device, green (normal) v red (fault).

Model/Technical Parameters WR-B60 WR-B80 WR-B100 WR-B120 WR-B150
Rated Operating Voltage Un (V ~) 220V 380V 220V 380V 220V 380V 220V 380V 220V 380V
Maximum Continuous Operating Voltage Uc (V ~) kV 385V 420V 385V 420V 385V 420V 385V 420V 385V 420V
Voltage Protection Level Up (V ~) kV ≤1.8≤2.2 ≤2.4≤2.5 ≤2.5≤3.2 ≤3.4≤3.7 ≤4.0≤4.5

Maximum Discharge

Current Imax(8/μ20μs)kA

60 80 100 120 150

Nominal Discharge

Current In(8/μ20μs)kA

30 40 60 80 100
Response Time <25 <100
L/N(mm²)The Cross Section Of L/N Line 16,25 16,25 16,25 16,25 25,35
PE (mm²)The Cross Section Of PE Line 16,25 25,35 25,35 25,35 35
Fuse or Switch (A) 63A 63A 63A,100A 63A,100A 63A,125A
The Line Section of Communication and Alarm (mm²) ≥ 1.5

Operating

Environment-C

(-40ºC~-+85ºC)
Relative humidity 25 ºC ≤95%
installation Standard Rail35mm
Material of Outer Covering Fiber Glass Reinforced Plastic

Surge Protector SPD,Surge Protection Device SPD,SPD

Wenzhou Korlen Electric Appliances Co., Ltd. , https://www.zjmannualmotorstarter.com