[Source: High-tech LED 's " LED Good Products" magazine February issue ]
LED has broad development prospects due to its energy saving and long life characteristics. At present, the replacement of traditional light sources with LED street lamps is gradually being accepted by the market.
LED lamps have good controllability. Like other electronic products, they have good controllability and intelligence, which is the future development trend.
For the user, if the intelligent control technology is combined with the LED street lamp, the LED street lamp has intelligent control characteristics, which is of great significance for its use. Mainly reflected in two aspects: First, real-time control and monitoring of the state of the lamp, very helpful for its use and maintenance work; Second, real-time adjustment of the lamp power, let it output illuminance according to traffic and people flow needs, energy saving more depth.
The traditional street lighting control is controlled by a street light switch control cabinet. That is, switching control, data detection, and less accurate fault detection for the loop. However, it is not accurate to a single lamp, and the status of the lamp is known and controlled in real time.
The intelligent single-lamp monitoring management system can fine-tune the antenna to each lamp, and control, monitor and dim each lamp in real time. The system is connected to the driving power supply in the lamp by installing a smart single lamp device in each lamp (rod) to realize the switch control, state monitoring and dimming energy saving of the street lamp, as shown in the following figure.
1. The single lamp controller realizes the control of the switch through internal relays;
2. The single lamp controller realizes dimming by outputting a PWM (or) signal to the driving power source;
3. The single-lamp controller can monitor the status of the whole lamp and various data, such as a fault or abnormal instant alarm;
4. The single-lamp controller can be installed in the pole, and can be installed in the fixture if space permits.
The single-lamp controller communicates with the centralized controller installed in the switch control cabinet through the high-performance power carrier signal, and accepts various control commands of the centralized controller, as shown below:
The centralized controller installed in the switch control cabinet communicates with the monitoring management center via wireless network (GPRS/CDMA/3G).
Here, the centralized controller plays the role of bearing up and down, accepts the monitoring center command, performs unified control on the entire switch control cabinet, or transmits commands to a single lamp controller to realize control of a certain xenon lamp (switch / At the same time, it also transmits the status or data of each single lamp controller of the subordinate to the monitoring center, so that the monitoring center can know the running status of each lamp at any time.
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