How to control the LED lamp wirelessly, and what technology and principle are used?
1. Working principle: by installing wireless routers or other wireless devices, bridging with the user’s original wireless network, building a wireless local area network, it is convenient to integrate the network control card into the wireless network for wireless network control.
2. Wireless switch control includes infrared induction switch (human body induction switch), sound control switch, optical control switch, thermal control switch, radio frequency control switch or infrared control switch (commonly known as remote control), timing switch and so on.
3. Intelligent LED lamp makes energy saving reach a new height through the perfect integration of LED, sensing technology and control technology. When someone enters the detection range of the sensor, the smart channel light will be lit automatically, and when the person leaves, the light will be turned off after delaying the OFF time.
4. LED light-emitting principle is the use of light-emitting diodes. Led lamp luminous principle: LED inside the PN junction, driven by voltage, the internal electrons and holes will be recombined, the composite process energy will be released in the form of luminous, this is the working principle of LED lamp.
What is the principle of app controlling the light bulb switch through wireless wifi?
1. If the light bulb has a control circuit, the circuit has WiFi function, it can communicate with the outside, and if it can accept instructions from the external APP, it is controlled by the mobile phone.
2. First of all, this lamp can be connected to the network. That is, there is a miniature wireless network card on the lamp that can be connected to the indoor wifi or the network interface can be plugged into the network cable. And the lamp has built-in software to receive commands from the network. This is called remote awakening, this kind of household equipment is more abroad, but it is not popular at home.
3. The principle is the same as the switch control lamp, that is, the wire is replaced by a radio transmitted by WiFi.
4. If there is a wireless node on the light bulb, there must be wifi module controlled by wifi, and of course, there are wireless communication modules such as zigbee and bluetooth. Their function is to collect signals or receive commands to control the corresponding light bulb.
What is the principle of LED lamp?
What is the luminous principle of led lamps? Led lamps are light-emitting diodes that contain solid-state semiconductors that can convert input semiconductors into light energy. In addition, the semiconductors inside the led lamp are composed of three parts, including p-type semiconductors, n-type semiconductors, and 5-cycle quantum wells.
The principle of LED is similar. The difference, however, is that LED does not emit light by jumping electrons within the atom, but by applying a voltage to both ends of the PN junction of the LED, causing the PN junction itself to form an energy level (in fact, a series of energy levels), at which electrons jump and produce photons.
LED lighting can directly convert electricity into light, while the working principle of led lighting circuit is to convert electrical energy into visible light solid-state semiconductor devices. From the led lighting circuit, we can see a semiconductor chip, which is also the principle of LED lamp luminous.
So it doesn’t glow. This kind of diode based on the principle of injection electroluminescence is called light-emitting diode, commonly known as LED. When it is in a positive working state (that is, a positive voltage is added at both ends), when the current flows from the LED anode to the cathode, the semiconductor crystal emits light of different colors from ultraviolet to infrared, and the intensity of the light is related to the current.
The intensity of light is related to electric current. The main working principle of full-color LED is to realize the change of seven colors by mixing red, green and blue, using pulse width modulation of output waveform, that is, adjusting the duty cycle of LED lights, and making use of the visual inertia of human eyes to achieve the effect of gradual change when the scanning speed is very fast.
Is it possible to control LED lights by connecting wifi to a mobile phone? How does it work?
1. The realization method: first of all, the lamp can be connected to the network, that is, there is a miniature wireless network card on the lamp that can be connected to the indoor wifi or the network interface can be plugged into the network cable. And the lamp has built-in software to receive commands from the network, which is called remote wake-up, a household device that is not popular at home and abroad.
2. If your display screen is already covered by a wireless signal, it is even easier. You only need to bridge the wireless router connected to the control card in the display screen to your wireless network, and you can control the display screen on any computer in the intranet.
3. There is a WIFI module in the lamp to communicate with the router, and the mobile phone can also communicate with the module in the lamp through the router. The technical content is average, the cost is dozens of yuan.
4. Send control commands and receive return parameters. The remote control lamp of mobile phone is mainly composed of LED lamp and mobile phone, and the communication between them depends on wireless communication. Mobile phone remote control technology is a new and fashionable electronic information technology, which refers to the technology of sending remote control command information through smart phones, so that smart phones can control all kinds of electrical equipment in an one-to-many way.
5. Then use your cell phone to download Arduino on the official website. 4. After entering the official website, click download to download and download the application. Finally, after downloading the application, open the connection Bluetooth module on the mobile phone, and click enjoy, you can use Arduino and mobile phone to control LED.
Who can explain how LED lights work?
Led lamp luminous principle: LED inside the PN junction, driven by voltage, the internal electrons and holes will be recombined, the composite process energy will be released in the form of luminous, this is the working principle of LED lamp.
Electrons in an atom have many energy levels. when electrons jump from a higher energy level to a lower energy level, the energy of the electron decreases, and the reduced energy is converted into photons. A large number of these photons are lasers. The principle of LED is similar.
Under the action of electric field, the arrangement of liquid crystal molecules will change, thus affecting its optical properties, this phenomenon is called electro-optic effect.
The intensity of light is related to electric current. The main working principle of full-color LED is to realize the change of seven colors by mixing red, green and blue, using pulse width modulation of output waveform, that is, adjusting the duty cycle of LED lights, and making use of the visual inertia of human eyes to achieve the effect of gradual change when the scanning speed is very fast.
Intelligent LED lamp makes energy saving reach a new height through the perfect integration of LED, sensing technology and control technology. When someone enters the detection range of the sensor, the smart channel light will be lit automatically, and when the person leaves, the light will be turned off after delaying the OFF time.
How to realize Intelligent Lighting wifi Control system
There is a wifi module on the lighting equipment, and provides a switch, brightness control interface, and then after the phone is connected to wifi, by downloading and installing professional software, the software calls the control interface, which can be controlled.
The control terminal sends out the lighting control signal, which is transmitted by WiFi after coding, and the illuminating end WiFi receives the signal. The decoding determines whether the lamp is turned on or off and then the circuit controls the lamp to be turned on and off. The principle is the same as the switch control light, that is, the wire is replaced by a radio transmitted by WiFi.
If there is a wireless node on the light bulb, wifi control must have wifi module, of course, there are zigbee, bluetooth and other wireless communication modules, their role is to do signal acquisition or receive commands to control the corresponding light bulb.
Lamps and lanterns: lamps and lanterns are the core part of intelligent lighting system, which can realize the functions of light switch, brightness adjustment, color transformation and so on.
Zigbee control, requires a gateway and cloud platform, as long as you can access the Internet, you can control the intelligent appliances under the router anywhere. And every smart home equipped with zigbee module is the signal source of wifi, and its operation is extremely stable, which is almost the industry standard of smart home.
Method 1: the Wi-Fi module works in AP mode, and the intelligent terminal (mobile phone, tablet) is directly connected to the network provided by the Wi-Fi module, and the wireless control is realized in the same hot network.
