The smart home system is the connection core of the whole smart home product. It can realize comprehensive lighting control, curtain control, and gas valve control through networked integrated intelligent control and management. When you come home from work to open the door, you can use the door sensor or infrared sensor, smart home system can automatically open the aisle lights, open the home lighting and curtains. So what factors should be taken into consideration when designing a good smart home system? Here are the technical staff to tell you:
Five principles of smart home system design: Five principles for designing smart home systems" src="http://i.bosscdn.com/blog/20/16/08/03101726280.jpg"/>
First, practical convenience
The basic goal of smart home is to provide people with a comfortable, safe, convenient and efficient living environment. For smart home products, the most important thing is to use practicality as the core, to abandon those flashy, can only serve as furnishings features, products based on practicality, ease of use and human nature.
Second, reliability
The intelligent subsystems of the entire building should be able to operate 24 hours, and the safety, reliability and fault tolerance of the system must be highly valued. For each subsystem, corresponding fault-tolerant measures are taken in terms of power supply, system backup, etc. to ensure the normal and safe use of the system, its quality and performance are good, and it has the ability to cope with various complex environmental changes.
Third, standard
The design of smart home system solutions should be carried out in accordance with relevant national and regional standards to ensure the scalability and extensibility of the system. Standard TCP/IP protocol network technology is used for system transmission to ensure that systems between different manufacturers can be compatible and interconnected. . The system's front-end devices are versatile, open, and extensible devices. If the system host, terminal and module adopt a standardized interface design, it provides an integrated platform for external vendors of home intelligent systems, and its functions can be expanded. When it is necessary to add functions, there is no need to excavate the pipe network, which is simple, reliable, and convenient to save. The systems and products chosen for the design will enable the system to interoperate with third-party controlled devices that will continue to evolve in the future. ![[Sharing] Five Principles of Designing a Smart Home System](http://i.bosscdn.com/blog/20/16/08/03101743295.jpg)
Fourth, convenience
Whether or not the cabling installation is simple is directly related to the issues of cost, scalability and maintainability. It is necessary to select a system with simple cabling, and it can be wired together with residential broadband during construction. It is simple and easy; the equipment is easy to learn, operate and maintain. .
V. Data Security
In the gradual expansion of smart homes, there will be more and more devices connected to the system, inevitably will generate more operating data, such as air conditioning temperature and clock data, indoor window switch status data, gas meter data, etc. . These data have an unprecedented degree of correlation with the privacy of an individual family. If data protection is caused, carelessness in data protection will not only result in personal habits and other data leakage. Data related to home security, such as window status, will directly endanger family safety. . At the same time, the smart home system is not isolated from the world. It must also review the data entering the system to prevent malicious destruction of home systems and even destroy connected home appliances and equipment. Especially in the era of big data today, we must prevent the security of family big data.
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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.zjthermalrelay.com