Venetian blinds are divided into two types, fixed and movable. It is made up of many thin sheets connected together. It is not only used for ventilation, shading, and sound insulation, but also can cool and shade the room and decorate the living room. Venetian blinds are made of bamboo, wood chips, FRP sheets, aluminum alloy sheets, and plastic and linen sheets, which are popular on the market.
When purchasing blinds, first pay attention to specifications. The length of the concealed blinds (that is, the blinds are hung in the windows) should be the same as the height of the windows. The width is generally reduced by one centimeter from the left and right of the windows; the blinds (that is, the blinds hanging outside the windows) are exposed. The length should be about 10 cm longer than the window height and 5 cm wider than the width of the window. In general, small rooms are suitable for concealed blinds, and large rooms for exposed blinds.
Second, the purchase of blinds is best coordinated with the color of the room's furniture and walls. If the walls are creamy or white, ivory blinds can be used. The walls are light green and can be fitted with grey or green blinds. Brown-red furniture with pink or champagne blinds. In this way, the harmony of the cold and warm colors can make the living room look elegant and unconventional.
Next, the pattern for the purchase of blinds is also very elegant. The venetian blinds used in the living room should be decorated with waterfalls and landscapes to make people feel like being in a poetic scene. The layout of the bedroom, generally available soft colors, elegant plant paintings, still life or geometric patterns, etc., to show a harmonious and warm family atmosphere.
It is also worth noting that windows in different formats should be equipped with different blinds. If it is a general vertical window, it can be equipped with general blinds; if it is a horizontal window, it can be equipped with venetian blinds, which will appear harmonious, consistent inside and outside, beautiful and decent.
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The vibration sensor(Vibration Transmitter) is one of the key components in the testing technology of Vibration Measurement. Its main function is to receive the mechanical quantity and convert it into a proportional electric quantity. Because it is also an electromechanical conversion device. So we sometimes call it a transducer, a vibration pickup, etc.
Commonly used vibration sensors are as follows:
1. Piezoelectric resonant
The piezoelectric sheet is used to receive the vibration signal, and the resonance frequency of the piezoelectric sheet is relatively high. In order to reduce the resonance frequency, it is realized by increasing the mass of the piezoelectric sheet vibrating body, and using a spring ball instead of an appendage to reduce the two resonance frequencies and enhance the vibration effect. Its advantages are high sensitivity and simple structure. However, the signal needs to be amplified and sent to a TTL circuit or a single-chip microcomputer circuit, but it is enough to use a triode single-stage amplification
2. mechanical vibration
In the traditional vibration detection method, after being vibrated, the spring ball vibrates at a reduced amplitude for a long time, and this vibration is easy to be detected by the detection circuit. The vibration output switch signal is determined by the output impedance and the resistance value of the matching output. According to the input impedance of the detection circuit, it can be made into a high-impedance output mode.
3. Micro Vibration Sensor
The mechanical vibration sensor is miniaturized, the vibration body is carbonized and sealed, and its working performance is more reliable. The output switching signal is directly connected with the TTL circuit and or the input circuit of the single-chip microcomputer, and the circuit structure is simple. The output impedance is high, and the quiescent working current is small.
Advantages of Vibration Sensors
1. Small size and light weight. It can be applied to some vibration test systems that are greatly affected by the additional mass.
2. It has a wider response frequency range of 4Hz-2000Hz than the magnetoelectric speed sensor, and the mechanical moving parts are not easy to damage
If you have any questions about the vibration sensor, please contact us, we will provide you with professional and timely answers.
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Wuxi Winsun Automation Instrument Co., Ltd , https://www.jswxwinsun.com