【导读】城市智能照明系统作为智慧城市的核心子系统,需要运用无线ZigBee、Wi-Fi、BLE等多种物联网和IT技术,来实现远程单灯开关、调光、检测等管控功能。本文为大家介绍7款基于Zigbee、BLE、Wi-Fi 等无线通讯技术的智能照明LED调光解决方案,其中包括Zigbee LED Lighting、BLE LED Lighting、Wi-Fi LED Lighting等。
一、无线通讯模块:
1、NXP JN5168 Zigbee 模块
特色:
• 2.4GHz IEEE802.15.4兼容
• 深度休眠:0.1uA
• 接收电流:18mA
• 发射电流:15mA
• 极高的接收灵敏度 ( -95dbm ) 和抗干扰性
图1- Zigbee LED Lighting架构图
2、Freescale MKW2x Zigbee 芯片
特色:
• 2.4GHz IEEE802.15.4 兼容
• 50MHz ARM Cortex-M4 MCU,带16通道DMA
• 接收电流:15mA
• 发射电流:15mA
• 灵敏度-102dBm
• 输出功率可设置-30 ~ +8dBm
图2- BLE LED Lighting架构图
3、TI CC2540 BLE 模块
特色:
• 高性能、低功耗的8051微控制器内核
• 兼容2.4 G蓝芽低功耗的RF收发器
• 极高的接收灵敏度(-97dbm)和抗干扰性
• 128 / 256 KB Flash 储存器
• 8 KB SRAM ,具备在各种供电方式下的数据保持能力
图3- WIFI LED Lighting架构图
4、Gainspan GS1011M、GS2100M WIFI 模块
特色:
• 2.4GHz IEEE802.11b/g/n 兼容
• 包含TCP/UDP/IP,HTTP,DNS,DHCP and SSL
• 支持UART/SPI 接口
• 供电2.7V—3.6V
• 内置板载天线,客户也可以外接天线
• 低功耗模式:睡眠、深度睡眠
• 电源监控
• -40℃--+85℃
下一页:
数字PWM调光LED驱动
二、数字PWM调光LED驱动
1、NXP SSL2129AT LED 驱动
特色:
• IC used: SSL2129AT
• AC line input voltage: 196 V to 264 V
• Output voltage: 32 V (DC) to 48 V (DC)
• Output current: 240 mA (at Vout = 40 V)
• Maximum power into LED load: 12 W
• Efficiency: > 82 %
• Power Factor: > 0.9 (at 12 W)
• THD: < 30 % (at 12 W)
• Line regulation: ± 8%
• Board dimensions: 63mm x 34mm x 25mm (internal board)
• Operating temperature: - 40 °C to +100 °C
• Mains harmonics: IEC61000-3-2
• EMC compliancy: IEC55015
2、ON NCL30082 LED 驱动
特色:
• Quasi−resonant Peak Current−mode Control Operation
• Primary Side Sensing (no optocoupler needed)
• Wide VCC Range
• Source 300 mA / Sink 500 mA Totem Pole Driver with 12 V Gate Clamp
• Precise LED Constant Current Regulation 1% Typical
• Line Feed−forward for Enhanced Regulation Accuracy
• Low LED Current Ripple
• 250 mV ±2% Guaranteed Voltage Reference for Current Regulation
• ~ 0.9 Power Factor with Valley Fill Input Stage
• Low Start−up Current (13 uA typ.)
• Analog or Digital Dimming
• Thermal Fold−back
• Wide Temperature Range of −40 to +125 C
3、TI LM3445 LED 驱动
特色:
• Drop-in compatibility with PWM and Phase dimmers
• Line injection circuitry enables PFC values greater than 0.95
• Adjustable LED current and switching frequency
• Flicker free operation