Saving energy and reducing emissions are the topics of today. Lighting is an indispensable and important part of modern human society, and lighting electricity accounts for about 19% of the world's total electricity consumption. Therefore, green lighting has become an effective way and an important means to promote energy conservation, emission reduction, and climate change mitigation.
LED has become the green lighting source in the 21st century. LED (also known as LED) is a solid semiconductor device that can directly convert electrical energy into light. High light efficiency, low energy consumption, LED energy consumption is 10% of incandescent lamps and 50% of fluorescent lamps. The life of light-emitting diodes is 100,000 hours, which is 10 times that of fluorescent lamps and 100 times that of incandescent lamps.
In order to save land resources, modern buildings usually configure underground parking garages, and the lighting fixtures in the garage need to be turned on around the clock. However, when there are no vehicles or people in the parking garage, low-light (low-power) lighting can be used to save electricity. Therefore, microwave induction LED lights are installed in the garage, which can detect vehicles or pedestrians with high sensitivity. If there are people or vehicles going in and out, please keep the foot power of the lamp continuously shining. Until a person or vehicle leaves or stops moving, the lamp tube changes to dim light (low energy consumption) for a period of time and continues to emit light. In order to achieve energy-saving effects.
Let's talk about radar microwave first. The so-called radar is actually an electromagnetic wave between infrared and FM. The frequency range is 300M-300GHz. Like the speed of light, it is also transmitted into the air at a speed of C=299792458 m/s. In contrast, microwave mainly refers to its own electromagnetic wave with a very short wavelength of 1mm-1m.
Therefore, it is called microwave, and it is also called "ultra-high frequency electromagnetic wave".
The working frequency of the radar microwave induction module power supply is generally fixed in the range of 5.8GHz plus or minus 75MHz. The specific process is as follows:
(1) Startup: After the inductor is powered on, the oscillation circuit of the inductor automatically generates a frequency of 5.8GHz plus or minus 75MHz, which we call the local oscillator frequency.
(2) Amplification: The frequency of the local oscillator becomes an electromagnetic wave carrier after being amplified by the amplifier, and is launched into the air through a high-frequency tube (or antenna).
(3) Receiving: After the emitted electromagnetic wave is reflected by surrounding objects, it is selected by the frequency selection network of the oscillator, and the original 5.8G frequency band is simultaneously sent to the differential circuit for phase comparison, and the obtained difference signal is used as the self The basic signal of inspection (surrounding environment inspection).
(4) Detection: When surrounded by a moving object, the reflected electromagnetic wave is different from the base signal during self-check after circuit analysis. At this time, the trigger signal is used as the basis of the trigger signal, and the module outputs a control signal.
Ferry Smart FR58L2M8-2321S, FR58L2MS-3020S and other radar module series, working at 5.8GHz, integrated radar transceiver, intermediate frequency circuit and MCU processing, etc., with the peripheral antenna and a small number of peripheral circuits to form a complete radar sensor, which can be embedded in lamps, home appliances and In various electronic products, the human body, automobiles and various moving targets can be detected by induction.
Features:
? Working frequency: 5.8Ghz±75MHz
? Input voltage 4.5-5.5V
? Working current 38-50mA
? The forward distance can reach 15m
? Integrated PLL phase-locked loop, automatic frequency lock to 5.8Ghz±75MHz
? Industrial grade, support high and low temperature (-40°-85°) reliability test
? Integrated intermediate frequency processing and filtering
? Flexible pipe angle interface
? Integrated MCU microprocessor
? Integrated core algorithm protocol and software solution
? Support distance adjustment
? Comply with FCC/CE/SRRC and other wireless certification standards.
Everyone started to use the touch screen to control the lamp, the working mode is: "finger touch the switch, the light turns on, the circuit is forced to delay the light off for 30S". Afterwards, because people felt inconvenient, I studied the sound-controlled LED tube. The working method: "Detected the sound light is on, the sound disappears, and the light is forced to delay 30S. But the sound control is easily affected by external noise, and then infrared sensor LED lights appeared. Tube, solved the lack of sound control.
However, the infrared sensor is easily affected by temperature, and the signal is easily attenuated during transmission, which affects the normal distance of reception. The radar microwave induction device uses electromagnetic waves as the transmission medium, using the principle of Doppler effect and Fourier transform technology, so that the high-frequency phase and frequency difference accurate analysis system can accurately detect the carrying animals with high sensitivity, regardless of people or vehicles, as long as Movement can be detected. Microwave oven technology is one of the most advanced LED fluorescent lamp intelligent products in the world today. It can effectively reduce lighting power consumption, reduce energy waste, and achieve energy saving and emission reduction.
Shenzhen Ferry Smart Co., Ltd. has its own core algorithm, and has a research and development team that has concentrated on the radar field for many years. It also has professional RF, communication testing and production and processing capabilities. It has the unique advantages of high performance, price and program design. Welcome to know at any time Oh!
