The driving recorder not only helps to provide a credible evidence in the traffic incident, but also facilitates the traffic police's responsibility and insurance company claims, and also plays a role in cultivating good driving habits and allowing drivers to obey the traffic rules. The cost of retrofitting with the on-board recorder is much lower, making it one of the standard configurations for home and passenger cars, taxis, and buses.
With the rapid increase in the number of car ownership in China, the frequency of road traffic incidents has risen, and more and more private car owners have begun to pay attention to video forensics, which has also promoted the development of the driving recorder market. The driving recorder not only helps to provide a credible evidence in the traffic incident, but also facilitates the traffic police's responsibility and insurance company claims, and also plays a role in cultivating good driving habits and allowing drivers to obey the traffic rules. The cost of retrofitting with the on-board recorder is much lower, making it one of the standard configurations for home and passenger cars, taxis, and buses.
Driving recorder emphasizes environmental adaptability
In development, the main problems that the driving recorder needs to solve are: reliability and low power consumption, clarity, night visibility, picture quality, color and multi-view application requirements.
Reliability comes from high-quality product components, especially DSP main chips, memory and image sensors. The driving recorder is usually installed in the middle of the front windshield of the car or on the back of the rear view mirror. These installation locations can be as high as 90 ° C in the summer when the sun is shining directly. The chip is packaged inside the drive recorder box and the surface temperature is higher. If the core components such as DSP appear unstable, deadlock, automatic restart and other faults at high temperatures, it will directly lead to the loss of video image data. However, the temperature range of civilian consumer chips is usually between 0 and 70 ° C. Therefore, it is difficult for civilian consumer products such as mobile phone chips to be directly used in driving recorders. Industrial grade products with a wide temperature range are required to have good reliability. Guarantee.
At the same time, low power consumption is often a guarantee of reliability. Generally speaking, the size and installation limit of the driving recorder are strict. In a small sealed casing, if the internal chip consumes a large amount of power, it will cause severe heat generation and heat up rapidly, so that the temperature is high, CMOS The noise of the sensor increases, and too high temperature may cause components such as DSP, memory, and CMOS to malfunction.
Secondly, in terms of image quality requirements, 1080P and above pixels have gradually become the mainstream in the market. Since the driving recorder generally uses a super wide-angle lens, the distance of the front-end car in the field of view is smaller than that of the human eye or the mobile phone, and the video of higher definition (such as 2304x1296/1296P and 2560x1440/1440P) will be significantly improved. Picture clarity is more conducive to video forensics. If it is displayed on the 1080P monitor, it will be very sharp due to the oversampling relationship. In addition, color accuracy and automatic white balance accuracy are also key elements. At different times of the day, and under the influence of different light in the environment such as tunnels and overpasses, you need to adjust the color settings and white balance settings at any time. Good image quality and color not only increase the credibility of video evidence, but also increase itself. The screen is also more pleasing to the eye.
Of particular concern is nighttime visibility performance. The night illumination is low, the noise of the CMOS sensor is too large, the video is easy to be blurred or mosaic; in addition, the brightness of the night lights and street lights is much higher than that of the road surface, and it is easy to cause the road surface recognition when the vehicle appears on the opposite side, or When the car's headlights hit the front of the car, the license plate is overexposed and unrecognizable. To solve these problems, not only need to support low-illuminance good CMOS image sensor, but also DSP support high dynamic function, which can reduce video noise, suppress strong light, and improve road visibility.
In the current development of the new driving recorder, more emphasis is placed on the use of powerful functions. For example, not only single-channel, but also support two-way video, both for front view and rear view when reversing; some can also be used to monitor drivers to prevent fatigue driving; some can also support 360-degree viewing , extending security to full viewing angles. The problem to be solved by multiple viewing angles is to increase the coverage of the video, especially the reversing video, body looping video, etc., which are usually mainly used in medium and high-end configuration vehicles or super long passenger cars, and the driving recorder supporting two-way video is also Can be equipped with video recording.
High-end driving recorder, bid farewell to low-priced 720P and cheap 1080P
In the development of the overall solution of the current driving recorder, the market competition mainly focuses on two aspects: First, the low-cost 720P and the cheap version of the 1080P solution, the final product price is lower, but in the power consumption, image quality, clarity There is a discount on visibility and night visibility; the second is to use the tablet technology solution, based on the Android customized system, to provide some entertainment and simple intelligent accessory functions on the desktop user interface, but the image and video effects of the main DSP Similar to the tablet, the driving recorder is not optimized. At present, driving recorders from two angles will have a certain share in the low-end and special markets, but they lack impact on the mid-to-high-end market and the user experience is not good.
In the high-end market of driving recorders, it is necessary to select a high-reliability main chip, to be able to adapt to a wide temperature range, to have as low a power consumption as possible, and it is preferable to have a mature product with a large market share. For new products, it is best to use sensors with more than 4M pixels to improve the definition, and support high dynamic functions, DSP noise reduction function is also good, for some special needs, you should also choose to support dual video, provide reversing assistance, and line Additional functions such as auxiliary and front car alarm lights. Take the technical solution developed by Anba as an example. At present, the A7L series is the mainstream high-end solution in the market, and the A12 series is a new generation of high-end solutions.
Upgrade capture camera pixel boost forensics persuasion
In addition to the driving recorder, the demand for the capture camera used by the traffic management department is also growing. As the pixels of the CCD sensor increase, the resolution of the camera rises rapidly from the previous 1080P to 5M, 8M or even higher, which makes the camera can make the photographed vehicle more clear, which is conducive to the persuasiveness of the image evidence, and The high-pixel CCD capture camera can cover more lanes, which not only reduces the installation cost of the equipment, but also achieves the same effect in capturing illegal vehicles.
Looking into the future, professional traffic capture cameras may move toward high-pixel, global exposure CMOS, intelligent, etc., which will help improve picture quality and increase the deterrence of law enforcement forensics. Night-time capture-assisted illumination may evolve toward high-speed visible-light sync strobes or even infrared strobes, replacing the current single-shot or continuous illumination. The driving recorder needs to add more Internet data uploading functions. For the personal use of the driving recorder, it may be possible to upload some short films or pictures of key points to the cloud to achieve big data backup, and also propose speed warning and routing strategies according to individual driving habits and routing. When parking outdoors at night, battery-powered surveillance cameras may be required to trigger photo recordings based on surrounding sounds or PIRs. This battery-powered surveillance camera can be integrated with the driving recorder. .
The most comprehensive introduction of LED PCB
The relationship between LED and PCB
The Printed Circuit Board is a genius innovation of circuit technology, laying less space and materials for more complex and large-scale circuits. The printed circuit board is such an important invention in circuit technology because it makes electrical and electronic components smaller, more flexible and more precise. For example, FPC( Flexible PCB ), Multilayer PCB , BGA PCB , rigid- Flex PCB and so on.
Soldering the LED chip to the PCB Board , as long as the PCB circuit is connected in some way, it will illuminate, which forms the LED PCB. LED PCBs typically also have a heat sink and ceramic pedestal to hold the circuit in place and allow the smooth operation of the circuit. A heat sink is required because LEDs tend to generate a lot of heat, which can damage the PCB and the equipment that connects the circuits.
Because LED will produce a lot of heat, led PCB generally uses metal substrate as its production material. Metals with the ability to dissipate heat quickly have proved to be a better choice. Generally, whenever led PCB is designed, Aluminum PCB is preferred. Aluminum PCB usually also contains a thin layer of dielectric, which can dissipate heat faster.
In addition to general lighting, led PCB can also provide visible light, infrared and ultraviolet light. Compared with other light sources, LED PCB can provide higher energy.
We are a professional LED PCB manufacturer and assembler in China, In this article, we would like to introduce in detail what is LED PCB, the materials used in manufacturing and LED Circuit Boards manufacturing, the application of LED Printed Circuit Boards and so on.
In China, there are many PCB manufacturers and suppliers. Jinghongyi PCB is one of the LED PCB Board manufacturers. We only provide LED PCB fabrication services. LED PCB design is not our specialty and business scope.
LED PCB board Introduction
LED PCB has many other names, such as LED PCB board, LED circuit, LED circuit board, led printed circuit boards, PCB board for LED.
In a sense, LED PCB and aluminum PCB belong to the same kind of PCB products, because their uses and materials are mostly the same.
With the popularization and widespread use of industrial lighting and civil lighting, whether outdoor or indoor, family or commercial buildings and factories, lighting provides the guarantee of its normal operation.
Of course, nowadays, with the development of human society, environmental pollution has become a difficult problem in the world. In order to reduce the consumption of coal, such as coal used for power generation in thermal power plants, coal combustion pollutes the atmosphere very seriously. In order to save energy and protect the environment, LED lights and previous lighting methods have great advantages, except for energy. Besides providing brighter lights, it also contributes to environmental protection.
LED PCB Meaning
LED circuit board is a kind of printed circuit board.
LED PCB Board Manufactureing
Both LED aluminium PCB and FR-4 fiberglass circuit board belong to PCB. To say differently, only compare LED aluminium substrate with FR-4 fiberglass circuit board.
LED aluminium substrate is printed on the surface of aluminium material with better thermal conductivity, and then weld electronic components on it.
In electronics, an LED circuit or LED driver is an electrical circuit used to power a light-emitting diode (LED). The circuit must provide sufficient current to light the LED at the required brightness, but must limit the current to prevent damaging the LED.
The voltage drop across an LED is approximately constant over a wide range of operating current; therefore, a small increase in applied voltage greatly increases the current.
Very simple circuits are used for low-power indicator LEDs. More complex, current source circuits are required when driving high-power LEDs for illumination to achieve correct current regulation.
An LED PCB board tends to generate a high volume of heat, making it difficult to cool via traditional means.
LED PCB Board Material - LED PCB raw material, LED bulb PCB raw material, LED strip PCB material
Metal core PCBs are often chosen for LED applications because they have enhanced heat dissipation capabilities. In particular, aluminium is usually used to make circuit boards for LED lamps. Aluminum substrates usually consist of thin layers of thermal conductive dielectrics that can be transported and have much more efficient heat dissipation than conventional rigid PCBs.
Compared with other electronic components, LED generates more heat, which requires PCB to heat very well. For this special feature, Metal Core PCB is often used in LED circuit boards, especially Aluminum Core PCB .
The following is the heat dissipation capacity of PCB plates of different materials, from weak to strong
1. FR4, common PCB board material;
2. Alumina substrate;
3. There is no doubt that the thermal conductivity of ceramic PCB is the best among many materials;
4. The thermal conductivity of alumina ceramic circuit board can be about ten times that of the aluminum substrate;
5. The thermal conductivity of Slyton aluminum nitride ceramic circuit board is ten times higher than that of alumina;
In this kind of ultra-high thermal conductivity, LED light attenuation will be greatly weakened, and its service life will be greatly increased.
LED Lighting PCB Assembly
Seeking LED PCB and Assembly? LED PCB Manufacturing and assembly; Led board made based on your PCB files. Turn-key services; 100% inspection.
Applications of LED PCB
PCB LED lights can be incorporated into numerous lighting applications due to their combination of excellent energy efficiency, low cost and maximum design flexibility.
- Automotive headlights
- Airport runway landing lights
- Lighting used in military field
- Street lighting
- Highway tunnel lighting
- Photovoltaic (solar) lighting
- Flashlights and lanterns
- Traffic and signal lighting
- Lighting in hospital operating rooms
- High growth plant lighting
- Highway tunnel lighting
- Solar power products
If you have any questions about LED PCB Board, Please feel free to send us email. If you have final Gerber for production, welcome your inquiry.
Additional Information
Aluminum PCB for LED Light/Lamp/Tube
Aluminum PCB for LED
Aluminium Base LED PCB
LED Metal Core PCB
Metal Core PCB for LED
PCB industry cut into LED PCB heat sink aluminum substrate
Double Sided Aluminum PCB
LED PCB
LED PCB,LED Circuit Board,LED PCB Board,LED Printed Circuit Board
JingHongYi PCB (HK) Co., Limited , https://www.pcbjhy.com