Release date: 2018-01-08 Source: Zhongzhao.com Share:

In today’s era, smart lighting and smart cities are hot topics. Over the past few years, driven by next-generation information technologies such as the Internet of Things, cloud computing, mobile internet, and big data, smart lighting has experienced rapid development. However, during this growth, are there any aspects that have been overlooked?

Professor Xiao Hongqing raised these questions at the 2017 Semiconductor Lighting Industry Conference. He aimed to explore and appreciate the quality of lighting engineering through the lens of Chinese ethics and Zen wisdom.

● Complexity Is Not Always Better – Lighting Should Be Appropriate

“Our engineering design and lighting planning are not easy to miss, this is a key issue for the LED supply and demand market in 2018,” Professor Xiao Hongqing mentioned.

It was concluded that the LED output value in 2017 reached US$17.16 billion. For the general lighting market, there is about 60–70 billion potential replacement of lighting fixtures globally. It is estimated that about 6–7 billion LED lamps will be used annually by 2020, taking approximately 10 years to reach saturation. Thus, the LED lighting market still holds great potential.

On the other hand, the night travel economy is driving the construction of landscape lighting markets. China's 300 prefecture-level cities and 2,800 county-level cities combine dynamic lighting control technology with LED curtain wall lighting and music shows to create cultural cities along rivers, coasts, lakeshores, and city squares. If 5% of cities promote their lighting projects annually, it could form a multi-billion-dollar market demand for landscape lighting.

The Taoist sage Laozi said, “The Dao follows nature.” In places like Japan and Rome, some lights are designed to evoke the feeling of moonlight (Figure 2). What is the feeling under ancient moonlight? Lighting must reflect that, why? Because it's natural.

Comfortable vision should avoid excessive brightness, over-illumination, and overly bright designs. While not impossible, it can be detrimental. For example, the four towers in Figure 3 appear very comfortable at first glance, without transitions or artificial packaging. This is a natural aesthetic. The three towers in Kyoto, Beijing, and Kuala Lumpur create a simple and beautiful color feeling, while Guangzhou’s small waist offers a modern vibrant banquet, full of dynamic energy but not dazzling.

Night landscape lighting should be distinctive and natural, rather than blindly chasing dazzle. The four items in Figure 4 use color changes to create different effects, but over-emphasizing them may ignore natural qualities. Excessive beauty can lose the elegance of ancient towns, which might not be clever design. Too bright landscape lighting can overshadow the simplicity of villages, often leading to monuments or disasters.

Urban landscape lighting seems to have forgotten the basic requirements and functions of nighttime illumination. Street lights and lighting projects in Figure 5 may be urban disasters instead of brilliance! The light is too bright and the colors are distorted. Placing lights on trees to project the depth of leaves is uncomfortable and unnatural, becoming “urban animal killers” that affect birds’ rest. Over-emphasizing “people-oriented” design reflects human selfishness, ignoring the fact that the global village includes humans, animals, and plants, all sharing the Earth's resources.

The problem is also evident in residential area lighting. After dark, is it really necessary to continue the daylight environment? According to Professor Xiao Hongqing, residential area lighting is like the red light district of bars—control is done, but humanity and nature are lost.

In ancient times, it was emphasized that “the Dao follows nature.” If discoloration control is separated from natural laws, it may be counter-intuitive. There is connotation in intelligent control, but no real intelligence component.

Lighting design master Zhou Lian said that historical lighting design should moderately reduce brightness. Dimming design may not be as good as glare lighting. We need to restore the true taste of cultural relics.

● Characteristics and True Pursuit of Intelligent Lighting

In all wireless remote control design ideas, is there any important basic principle that has been ignored by designers?

Using a mobile phone to control lighting is convenient, but it can cause eye strain if used for long periods. “For example, in the process of student learning, if you force students to stand up, leave the desk, and go to turn off the lights, this is a healthier approach,” Professor Xiao Hongqing explained. Controlling everything with a mobile phone is what everyone wants, but we have missed health and humanity.

Professor Xiao Hongqing mentioned that for most people, 70% of the existing functions of most electrical products and smartphones are redundant and not used because users (especially seniors) do not understand the instructions or explore themselves. Half a day, I also learned very painfully. This is a design flaw, missing the convenience needs of humanization.

Smart lighting should pursue health, nature, and allow all living things to share the earth. Figure 8 shows that in this year's Olympus photo contest, 150,000 photos were selected for the only special prize. Professor Xiao Hongqing liked this photo very much. It doesn't have very beautiful clothes, no lights, no special bright colors, and no grand scenes, but it records the warmth of a family. The simple and natural smile is the natural color. He believes that light is actually like this.

● Human Factors Engineering and Intelligent Humanized Lighting

The purpose of lighting is to provide a high-quality and comfortable visual light environment. So, what kind of light environment meets the requirements?

Appropriate brightness, avoiding glare, natural color rendering, regulating color temperature, reducing flicker, and optimizing luminous efficiency.

Light pollution is an issue that extends glare, resulting in new norms of light pollution and photobiosafety. These conditions are the conditions of “And”, not “OR” or “Conditional”, and all of these conditions must be met.

Do dynamic lighting, especially to control the damage of the stroboscopic light to the eyes and physiological adverse reactions (triggering epilepsy and dizziness and vomiting).

Human beings need to use light to create excitement for life; lighting technology must be innovative, and enterprises can be competitive and future-oriented; but lighting should not be just lighting.

Smart lighting control should be different from smart lighting.

Intelligent control is the use of scientific methods, techniques, means strategies, combined with physical world resources, the development of hardware equipment systems, providing control technology that facilitates comfortable life, is the physical world level of the metaphysical.

And wisdom lighting is the experience of life, the essence of experience feedback, information analysis, rational induction, combined with humanized needs and habits, based on the purpose of safety and health, adding intelligent control technology to achieve a truly comfortable and healthy life, is Metaphysical healthy world.

“Lighting equipment + sensing components + capital equipment + control system software = smart lighting,” this answer is wrong! Professor Xiao Hongqing said very seriously. This definition and cognition is not wisdom in itself. It is a typical materialism, lacking humanity and the natural philosophy of necessity and necessity.

In the future, smart lighting in all major venues will have a focus on application.

Commercial lighting should be energy-saving, commercial promotion, situational creation, healthy and comfortable development;

Industrial lighting should have production monitoring, energy saving, and safety guidelines;

Public lighting should save energy, collect data, protect the environment, and maintain it safely;

Residential lighting should meet human factors, create context, be healthy and comfortable, and save energy.

“Why do students go to sleep in class? Because the light lacks color temperature control, the average person can only maintain about 40 minutes at the same color temperature, so we have to be truly intelligent lighting control for human health.”

Professor Xiao Hongqing believes that intelligent control + healthy human factors, including the human needs we can now see, can be truly intelligent lighting.

● Understanding Lighting from Zen Wisdom

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