As is known to all, electronic components including aluminum electrolytic capacitors, resistors, MOS tubes, etc. have presented price increases, and most LED drive power companies are facing a severe situation.
With the sharp increase in prices of raw materials this year, supply has become even more scarce. Under the pressure of cost, Aihua Group also adjusted its products at the end of April. However, the price increase of the Aihua Group has not subsided, and the Japanese manufacturer Rubycon and the Taiwanese manufacturer Fengbin Electronics have successively released price increases.
In this regard, Zhao Nannan, sales director of Igor Electric Lighting Industry Center, said to Gaogong LED: "Now the price increase is not the most terrible. The most terrible thing is that there is a shortage of raw materials, which has a very big impact on power companies." Indeed, with The tightening of national environmental protection policies has caused a shortage of raw materials, which is bound to affect the delivery cycle for power supply companies.
Not only that, the current homogenization phenomenon in the power supply industry is serious, the price competition is fierce, and the gross profit margin of products is continuously decreasing. In this situation, Zhao Nannan suggested that small-sized enterprises can take the segmentation market and make a differentiated strategy; large-scale enterprises should actively face the main market and use the scale effect to integrate the market while innovating.
When it comes to innovation and large-scale production, the small and medium power supply manufacturers - dark energy has a certain say. Dark energy is designed to integrate high-reliability LED intelligent drive power solutions by integrating electrical, magnetic and thermal technologies. Chairman of the dark energy chairman Peng said that the competition in the small and medium power supply industry is already fierce, and the intelligentization will be a new way for enterprises. Dark energy will also play a smart theme.
Mr. Peng told Gaogong LED that Dark Energy will showcase a new dimming color power supply at this exhibition, and our drive power life is more than 5 years.
Of course, in addition to intelligence and scale, is there any other new direction for some small-volume drive power companies? Perhaps, as Zhao Nannan said, the market segment may be a good choice. Among them, some drive companies are on the way to the development and production of emergency power.
For emergency power supply, Bilda general manager Ke Jianjun bluntly said, “Now, lighting fixtures need to carry emergency functions and are not included in the mandatory requirements. Only some regions in 50 US states have mandatory requirements. With the strengthening of security awareness, If emergency functions can be included in the mandatory requirements, the emergency power market is huge."
Therefore, in response to the continuous expansion of the demand for emergency power in the European and American markets, Birda continues to develop in research and development, certification and marketing. Moreover, Bilda is currently the first company to pass the UL list certification in the emergency power supply field. Ke Jianjun said that our goal is to make Bilda a single product champion in the field of emergency power.
As a leader in the field of emergency power, Bilda has established close cooperation with many well-known domestic lighting manufacturers, and will be targeting international first-line brands such as “Keston†and “Fulhamâ€. In order to become a single product champion, how will Bilda plan in the future? On June 10th, at the "2018 (16th) High-tech LED Industry Summit Forum" held by Gaogong LED, General Manager Ke Jianjun of Bilda will deliver a keynote speech entitled "There is always a new blue ocean in the world". .
He will focus on the current situation and future trends in the emergency power market, as well as Bilda's layout strategy. Not only that, but at the conference site, Bilda will also release several new emergency power supplies.
Ke Jianjun
"2018 (16th) High-tech LED Industry Summit Forum will be held in the Westin of the Canton Fair. This forum will discuss "how to grasp the new opportunities of 2018, such as intelligent lighting, automotive lighting, plant lighting, and new display technology (Mini/MicroLED)." On-site big coffee gathered, the whole process of dry goods sharing. Long press the QR code above to participate in the registration.
The ONU in EPON adopts the mature technology Ethernet protocol, which can realize low-cost Ethernet layer 2 and layer 3 switching functions. This kind of ONU can provide shared high bandwidth for multiple end users through cascading. In the communication process, no protocol conversion is needed, and the transparent transmission of user data can be realized. ONU also supports other traditional TDM protocols without increasing the complexity of design and operation.
The OLT and all ONUs in EPON are managed by the network element management system, and the network element management system provides the operating interface with the core network of the service provider. The scope of network element management involves fault management, configuration management, billing management, performance management, and security management.
working principle:
1. Downstream data stream uses time division multiplexing (TDM) technology
During the transmission of the EPON signal, the downstream data is broadcast from the OLT to multiple ONUs. According to the IEEE802.3 protocol, the length of these data packets is variable, and the longest can reach 1518 bytes. Each data packet has its own destination address information, that is to say, the header of each packet indicates whether the data is for ONU1, ONU2 or ONUn. In addition, some packets can be sent to all ONUs, called broadcast packets, and some are sent to a special group of ONUs, called multicast packets. The data stream is divided into n independent signals after passing through the optical splitter, and each signal contains all specific data packets. When the ONU receives the data stream, each ONU extracts the data packets destined for itself according to the specific address information, and discards those data packets with different address information.
2. Upstream data flow uses time division multiple access (TDMA) technology
During the transmission of the EPON signal, the upstream data is sent from multiple ONUs to the OLT in a time division multiple access mode. Each ONU is assigned a transmission time slot. These time slots are synchronized. Therefore, when data packets are coupled to an optical fiber, different ONUs will not cause interference. For example, ONU1 transmits data packet 1 in the first time slot, ONU2 transmits data packet 2 in the second unoccupied time slot, and ONUn transmits data packet n in the nth unoccupied time slot, so that transmission conflicts can be avoided.
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