Q:How to use ZigBee intelligent LED street lamp

Because every time there is a street lamp, through the method of adding repeaters, ZigBee can now add more than 60 thousand devices for a city should not be a problem, if more street number more than 60 thousand, can be divided into several pieces respectively. In general, the distance from each repeater is about 70 meters, and it will be better if there is no blocking outside, and hundreds of meters are no problem at all. If the effect is not good, you can add a repeater in the middle to resolve it.

Q:Is the power LED lamp constantly flashing? Is it a power supply problem?

LED lamp and LED drive power does not match the normal single foot 1W beads under current: 280-300mA, voltage: 3.0-3.4V, if not enough power LED chip will cause light source stroboscopic phenomenon, it can not withstand the current high lamp of a bright, serious phenomenon of the light beads of gold or copper built-in burning off the lead light is not bright.

Q:Compared with LED street lights, what are the advantages of graphene street lamps?

And if compared to ordinary sodium lamp, but also can save energy 70%. Thus, on the basis of the same amount of electricity, graphene street lighting will be higher, and this benefit can also benefit drivers traveling on the road. Almost all of the common LED lamp has a "black light", but the street surrounding light, but dark; and graphene Street due to changes in brightness and light, can avoid this effect of road crossing chiaroscuro "".

Q:What is the active power of LED street lamp? What is the relationship between input voltage and current and power?

Here, we define the phase angle advance as positive, and the phase angle lag as negative. The actual load is resistance, inductance, capacitance inductance capacitance of three types of complex, composite after referred to as "impedance", written in mathematical is: Z= R+j. where R is the resistance impedance, XL inductance, XC capacitance. If > 0, known as the "perceptual load"; conversely, if < 0 called capacitive load. Alternating current through the inductive load, the phase voltage of the alternating current phase advance; alternating current through the capacitive load, the lag phase alternating current AC voltage; electrical engineering definition of the power factor angle phi angle of power factor angle phi Cos phi is called the cosine value of power factor. For resistive load, the voltage and current of the phase difference of 0 degrees, therefore, the power factor of the circuit is 1 of the maximum; and pure inductance circuit, voltage and current phase difference of 90 degrees, and is a leading current voltage; in pure capacitance circuit, voltage and current phase difference is - 90 degrees. The current leading voltage. In the latter two circuits, the power factor is zero. For a general load circuit, the power factor is between 0 and 1. By mathematical impedance Z=, R+, J, if XL = XC, then Z= R, that is, impedance Z becomes a pure resistor, power factor is equal to 1.

Q:Constraints on LED street lights

The development of the domestic LED light source relative to foreign technology started late, from the international leading industry there is a certain distance, although the domestic LED light source theory of life can reach 100 thousand hours, but because of the heat problem cannot be solved completely and effectively, so that the actual life of large discount; unstable power supply system: LED driver power supply is the industry consensus in fact it is not stable, on the LED lighting industry back, because the driving power supply is an important part of the LED street lamp, which will lead to failure of the whole lamp fault. Due to poor reliability of power installed street lights are likely in a short period of time will be bad, the LED street lamp this outdoor height device, difficult installation, maintenance more difficult, for the lamp manufacturers, power supply instability makes the rising cost of maintenance.

Q:Why solar energy centralized power supply street lamp must be supplied by AC LED lamp?

You mean the power supply project, why the solar power is converted to AC, and then used for street lights?

Q:What is the voltage of the street lamp?

Street lights are directly connected with the city grid, so the street lamp voltage is generally 220V AC, belonging to high output, low energy saving lamps.Street lamps, lamps that provide lighting for the road, generally refer to lamps within the range of road lighting. Street lights can be seen everywhere in our lives, and they are indispensable lighting equipment.

Q:LED lamp of common sense, several, such as the LED street lamp, there are many W have many stars, some lamp is a lamp there are a lot of W number

But only a few out of the chip package LED lamp has many kinds of companies with different types of beads made products, but now a bunch of polycrystalline with a single tall power generally have finished 12 3W

Q:What does the LED street lamp power supply factory have?

PHILPS international brands, quality worthy of this brand, before using the KingSun mosopower, but the emergence of quality problems, then changed into PHILPS;

Q:What are the parts of a LED street lamp?

System design ideas, solar street lighting design and general solar lighting compared to the basic principle of the same, but need to consider more links. The following will be the solar LED high-power street Hongkong Industrial Group Co., Ltd. as an example, several aspects of analysis.