Several giants such as Philips and Osram have spent several years launching multiple networked lighting solutions that will be the decisive factor in the development of LED lighting. However, the lighting industry continues to grow rapidly in the “smart†arena, with two key factors. First, the industry must have a standardized and interoperable open platform that can be used for most lighting controls. Second, manufacturers cannot ignore the cost of moving from traditional lighting to digital lighting and continue to increase efficiency wherever possible.
The reason is the smartphone. Traditionally, we use switches, sensors, and wall controllers to control lighting. However, there is a growing desire to monitor and control the status of remote devices from anywhere, anytime via a smartphone.
The importance of smartphone control
Over time, the importance of smartphones and other mobile devices will undoubtedly grow. These technologies have become the center of control for our daily lives, enabling us to work on the go and manage our social life through social media. Lighting has become another part of our lives and can be controlled by mobile devices.
How to connect lighting to a smartphone
There are three different connection "layers" (C1, C2 and C3) that define how the smartphone connects to the lighting. The interpretation of each "layer" is based primarily on Bluetooth Low Energy (BLE) technology because of its enormous potential and high acceptance throughout the industry.
Figure 1. Digital lighting transformation
First, the traditional lighting (C0) is usually controlled by a Triac or 0-10V dimmer to provide control signals to the LED module drivers of each luminaire.
In the first layer (C1), a dedicated controller can be added to the existing drive, and a Bluetooth low energy (BLE) sensor or switch is placed on top of the C0 to allow the smartphone to directly control the lighting without the need for a cloud server. In this C1 mode, multiple smartphone controls allow users to share lighting control with each other.
The second layer (C2) adds the cloud to the combination, which means that the user records data on the illumination, for example, which light is on at which time, how many lights are on, how much power is used, and so on. The generated data can be easily implemented on a preset basis.
For the third and last layer (C3), a Wi-Fi / BLE bridge has been added to enable people to control their illumination through clouds within the BLE grid. This type of setup allows one to remotely confirm lighting status or configuration settings anytime, anywhere, or to set the most appropriate configuration in smart space.
How networking makes smartphones the center of smart lighting
The three layers mentioned above are becoming more and more common in lighting control for several reasons. The first reason is the evolution of the protocol, Bluetooth, which can now be adapted to smart technology via Bluetooth Low Energy (BLE). BLE is completely different from ZigBee. ZigBee does not support direct control of smartphones, but it is the center of many IoT activities today, especially at the end nodes. However, BLE can support grid technology and can directly control IoT applications, which is very important for high-density terminal applications such as smart homes.
Standardizations such as DALI, ZigBee, and Bluetooth are already underway as they play an important role as the core connectivity method for lighting networks, sensor networks, and wireless telephone networks. As a result, most of the upcoming solutions will be based on standardized hardware and firmware so that all participants in the digital lighting industry can participate in the development of viable end-to-end solutions. By the second half of 2017, most new smart lighting products will be based on DALI 2.0, ZigBee 3.0 and Bluetooth 5.0.
The second reason is due to the promotion and popularization of mobile networks, from 2G to 3G and 4G, LTE. These improvements ensure that smartphones can be easily connected to the cloud, allowing users to control lighting from anywhere in real time. In terms of the security and flexibility of information service use, the Smartphone Control Section is more suitable for personalized on-demand services, such as healthcare services, which can be identified by password or biometric technology, and the payment process will be easier. ,safer.
Open platform is the key to success
Due to the high cost and high price, LED manufacturers have no way to build a complete proprietary networked lighting solution. In other words, the benefits of networked lighting did not exceed the cost at this time. Therefore, in order to reduce costs, the LED industry must have a simple and open platform standard, manufacturers can build their own intelligent lighting solutions. With greater cost savings and increased opportunities for seamless integration, lighting manufacturers can freely design LED lighting systems based on open standards platforms and self-improve newly installed systems. In addition, people-oriented lighting should be built on the same platform, with more sophisticated spectrum control and additional network equipment available in PAN and BAN.
On an open platform, manufacturers should consider trying some examples of seamless smart lighting to reduce the resistance of decision makers and accelerate the widespread adoption of smart lighting, as shown in Figure 2. In the United States, LED lighting manufacturers can install dimmable drivers to improve LED lighting, or continue to use traditional dimmers like Triac or 0-10V. With the existing LED lighting system, a BLE-enabled dimmer or BLE-enabled smart dimmer can be added instead of the Triac / 0-10V dimmer. In this way, the smartphone can use the remote control technology more flexibly in the residential space. With a backward compatible smart driver, existing controllers can be matched to new color temperature adjustable drives. In addition, LED modules, drivers, and controllers can be combined into a single board (or "S-engine" intelligent engine) to reduce costs to an acceptable level.
Figure 2. Seamless options for C1 control
The step-by-step approach to seamless connectivity is based on a BLE solution or a BLE-ZigBee "combination" solution. By using BLE-ZigBee to combine a single-chip solution, you can easily adopt a simple, cost-effective approach.
Figure 3. BLE-enabled solution and BLE-ZigBee combination solution
In general, the advantages of lighting manufacturers in choosing digital lighting are obvious. To illustrate this point visually, as shown in Figure 4. Adding Bluetooth to an existing Triac / 0-10V architecture requires additional cost, but it is cheaper than adding smart features to existing dimmers. There is another way to save more energy: adding BLE to switches and sensors, and analyzing the conditions of using intelligent controls while maintaining specification consistency.
Figure 4. Step-by-step solution with obvious market adaptability
In addition, by enabling multiple phone controls for any home appliance, the initial investment can become more cost effective, especially useful when the control device is in remote control mode.
In addition to the above step-by-step options, the new multifaceted solution will support the latest control standards DALI 2.0, BLE 5.0 (grid) and ZigBee 3.0. In addition, 2ch 0-10V dimming will be available for white adjustable applications and includes energy metering to improve energy management.
In this article, we carefully evaluate the driving forces behind the development of smart lighting and people-oriented lighting solutions, and how to accelerate their adoption rate. Combining Bluetooth Smart Approach (or Bluetooth Low Energy) with an optimized grid and seamless end-to-end control options may be the most efficient way to move networking to people-centric lighting. To this end, a seamless solution based on the standard DALI, ZigBee and BLE protocols currently seems to be the best and most promising approach.
Encouraging lighting manufacturers to adopt this approach is key to the prosperity of the intelligent lighting era. This year, the early digitization of LED lighting will be based on a seamless option. Next-generation end-to-end solutions are expected to be realized in the future, accelerating the transition from smart lighting to people-oriented lighting. (Compile: LEDinside James)
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