People's feelings about color, texture, space, structure and all the details in the design of the room depend mainly on vision. If you leave the light and leave the lighting, you will not be able to talk about these effects. Therefore, the lighting and lighting in the design of the room largely determine the quality of the room design.
Indoor lighting methods include two types, natural light and artificial light. Residential buildings are generally dominated by natural daylight, and natural light is characterized by clarity, health, comfort and energy efficiency. Artificial lighting has stable illumination and is not affected by the direction and position of the room. The luminaires can be flexibly set in the design according to the needs of each space. Natural light has a drawback in terms of daylighting compared to artificial light, that is, it is affected by changes in sunlight, and does not achieve the flexibility of artificial lighting. Natural light is beyond our control in interior design and is largely determined by architectural design. Most of the time people spend in the living room is in the evening, so artificial light plays a vital role in the creation of the indoor space atmosphere.
First, the role of lighting
Organization space
In a space, how do we use lighting to organize space? In the lighting design, different lamps and different lighting effects can be used to make the space have a certain layering to organize the space.
2. Improve space
The form of the light is very rich, using the layered relationship of the lights to show the overall design effect, so as to achieve the purpose of improving the space.
3. Rendering the atmosphere
The indoor atmosphere of a space is crucial. In the lighting design, the light plays the effect of rendering the atmosphere, and can use the color of the light, the warm and cold color to express different space atmosphere. The warm-colored lighting gives a warm, comfortable feel, and the cool-colored lighting reflects a calm, quiet atmosphere.
Second, the way of lighting
1. Divided into light according to the way
Direct illumination: means that all lights or more than 90% of the lights are directly directed onto the illuminated object. It is characterized by easy glare and strong contrast between the illuminated area and the non-illuminated area.
Indirect lighting: This lighting method is to illuminate more than 90% of the light on the space enclosure and then reflect it onto the illuminated object. The light is even and soft and glare-free. Suitable for small spaces in residential lighting design.
Semi-indirect lighting: It means that about 60% of the light is first irradiated onto the space enclosure, and only a small amount of light is directly irradiated onto the object, so that the light in the whole space is soft, and the contrast between light and dark is not too strong.
2. According to the layout of the lamps can be divided into
Overall lighting: refers to the entire living room space lighting, called "basic lighting." It is characterized by a relatively even distribution of light, which can make the space bright and spacious. Suitable for general lighting in living rooms, restaurants and other spaces.
Partial illumination: Also known as “emphasis lightingâ€, overall illumination is a comprehensive basic illumination of the entire space compared to overall illumination, while local illumination has a clear purpose. It is characterized by a more concentrated light for the work surface or the object being illuminated, and can create a characteristic atmosphere and mood. Such as the bedside lamp in the bedroom, the desk lamp in the study, the mirror headlights in the bathroom, etc.
Decorative lighting: Also known as "atmosphere lighting", it is a kind of decorative or dramatic effect created by color light, which aims to enrich the color and layering of the space.
It is characterized by the creation of a luxurious, or rustic, or modern, or bright, elegant, or unrestrained personality space based on the characteristics of the various parts of the living room.
Third, the basic principles of lighting design
Comfort
The living room space is a space for people to live, rest and dine. In the lighting design, attention should be paid to the creation of comfort to avoid glare.
2. Artistic
The personality characteristics of a space reflect the master's sentiment, moral cultivation, attention to the choice of lamps, the performance of light and shadow in the lighting design, to reflect the artistic nature of the space.
3. Unity
In the design of the room, we must pay attention to the expression of contrast, but also need a unified principle in it. Opposition and unity are a contradictory relationship. In design, we must use this contradictory principle to express a rich sense of space.
Fourth, the lighting treatment commonly used processing methods
Point, line, surface
Formally speaking, the shape of light can be divided into three categories: spot light, line light and surface light. Reasonable, controlled, point-and-line matching is a necessary condition for aesthetics.
2. Rhythm and rhythm
As a form, light can be arranged in the order and rhythm to bring the corresponding rhythm. The formal beauty law used in space shape modeling is also applicable to lighting design.
3. The balance between bright light and Tibetan light
Usually in the lighting design, there are points of light and light. These two kinds of light can show a wonderful light and shadow effect if they show the proper amount of light in a proper space and reach a balance.
4. Cold and warm phase
Illumination uses the color principle of space from the form, and the light is divided into cold and warm. If a large area of ​​cold light is used to surround a relatively small proportion of warmer light, or vice versa, it may produce good results. In lighting design, considering the organic combination of cool and warm colors is an inevitable way of artistic expression.
In summary, in the lighting design of the living space, we must understand the role and mode of lighting, master the principles of lighting design, and then use the point line surface, rhythm and rhythm, the balance between bright and Tibetan light, and the design of warm and cold. The technique shows a harmonious and vivid living space.
The Co-Al Co-doped Barium Titanate
Lead-free Piezoelectric Ceramics was successfully developed by Yuhai company
through repeated experiments. By Researching the influence of Co-Al Co-doping
on the structure and properties of Barium Titanate-based piezoelectric
ceramics, the formulation and preparation technology of Barium Titanate-based
piezoelectric ceramics were optimized. Yuhai`s BaTiO3 was prepared by conventional
solid-phase sintering method, with the piezoelectric constant d33 (>170pC/N),
dielectric loss tgδ≤0.5% and mechanical coupling coefficient Kp≥0.34.
Barium titanate lead-free piezoelectric
ceramics are important basic materials for the development of modern science
and technology, which was widely used in the manufacture of ultrasonic
transducers, underwater acoustic transducers, electroacoustic transducers,
ceramic filters, ceramic transformers, ceramic frequency discriminators, high
voltage generators, infrared detectors, surface acoustic wave devices,
electro-optic devices, ignition and detonation devices, and piezoelectric
gyroscope and so on.
Application: military, ocean, fishery, scientific research,
mine detection, daily life and other fields.
China Patent of Yuhai company`s BaTiO3
Chinese Patent No.: ZL 2011 1
0126758.6
Name: Lead-free Barium Titanate
Piezoelectric Material with Addition of Cobalt and Aluminum
Lead free piezo material BaTiO3
Lead-free Material
Properties
BaTiO3
Dielectric Constant
ɛTr3
1260
Coupling factor
KP
0.34
K31
0.196
K33
0.43
Kt
0.32
Piezoelectric coefficient
d31
10-12m/v
-60
d33
10-12m/v
160
g31
10-3vm/n
-5.4
g33
10-3vm/n
14.3
Frequency coefficients
Np
3180
N1
2280
N3
Nt
2675
Elastic compliance coefficient
Se11
10-12m2/n
8.4
Machanical quality factor
Qm
1200
Dielectric loss factor
Tg δ
%
0.5
Density
Ï
g/cm3
5.6
Curie Temperature
Tc
°C
115
Young's modulus
YE11
<109N/m3
119
Poison Ratio
0.33
Lead Free Piezoelectric Elements
Piezo Element,Piezo Ceramic Elements,Piezoelectric Ceramic,Pzt Tubes
Zibo Yuhai Electronic Ceramic Co., Ltd. , http://www.yhpiezo.com