人体感应灯是一款利用红外线、热释电原理感应人体活动信息的新技术设计、研发而成的，专门用来检测和感应人体活动信息的产品。 当人或有温度的物体进入模块感应范围内时，感应模块就会输出一个高电平脉冲信号、或高电平延时信号，输出的感应脉冲或延时信号可以直接驱动LED灯指示灯、LED照明灯。

可自动开启照明,人离开后可自动延时关闭，杜绝能源的人为浪费，延长电器使用寿命且集节能、方便保安于一体之功能，感应头直径21mm，感应距离0-5m 感应角度：120° 负载：40W(灯泡 工作电压：220V 工作频率：50HZ 延时范围0.5min-5min 卫生间、浴室、电梯厅堂、等。

安装时请把智能灯具安装在人经常活动的地方(天花板或墙壁上)，可提高其灵敏度及工作范围。 不要安装在潮湿的天花板或墙壁上。 清洗时要先断开电源。 清洗时请选取无腐蚀性的清洁剂。 灯具安装后在一定空间不能用酸性或碱性的化学溶剂，否则对灯具的电镀或喷漆造成损坏。

       概述

　　人体感应灯是利用红外线感应人体活动来设计的驱动LED灯照明的产品。 其感应距离要求为50cm，感应角度40°，当人或物体进入感应范围内时，感应模块就会输出PWM信号，驱动LED灯亮，通过一个电容触摸按键，短按切换设定好的LED色温，长按可以连续调节色温。该方案采用超高性价比的芯科MCU芯片EFM8SB10F8G，带电容触摸，功耗极低，采用芯科距离感应芯片SI1153，可以实现无透镜50cm的感应距离,感应角度±20°。

　　优势

　　· Silicon Labs 8位MCU EFM8SB10F8G,支持电容触摸，最小分辨率1fF，灵敏度高，最大量程500pF，带有触摸软件库，简化开发流程，能够满足人体感应灯上触摸按键要求，SB系列MCU封装小，功耗低，带掉电监测的MCU睡眠电流最低可达50nA，非常适合电池供电应用，带有三通道可编程计数器阵列(PCA)，支持PWM输出模式，满足输出驱动LED功能。

【EFM8SB】

EFM8SB属于Sleepy Bee系列MCU，是世界上最节能的8位微控制器。EM8SB1 具有高效率的 8 位内核、创新型的低功耗技术、 从节能模式快速唤醒以及小外形等特性，因此成为了所有电池供电应用的理想选择。

产品特色

局部限电时的最低MCU休眠电流 (50nA)

最低MCU工作电流(24.5MHz时为150μA/MHz)

最低MCU唤醒触摸平均电流 (< 1μA)

使用内部RTC和局部限电时的最低休眠电流 (< 300nA)

超快速唤醒数字和模拟外设 (< 2μs)

集成 LDO，以在任何电压下均保持超低工作电流

Feature List

The EFM8UB1 highlighted features are listed below.

• Core

• Pipelined CIP-51 Core

• Fully compatible with standard 8051 instruction set

• 70% of instructions execute in 1-2 clock cycles

• 50 MHz maximum operating frequency

• Memory

• Up to 16 KB flash memory, in-system re-programmable from firmware, including 1 KB of 64-byte sectors and 15

KB of 512-byte sectors.

• Up to 2304 bytes RAM (including 256 bytes standard 8051RAM, 1024 bytes on-chip XRAM, and 1024 bytes of USB buffer)

• Power

• 5 V-input LDO regulator for direct connection to USB supply

• Internal LDO regulator for CPU core voltage

• Power-on reset circuit and brownout detectors

• I/O: Up to 22 total multifunction I/O pins

• All pins 5 V tolerant under bias

• Flexible peripheral crossbar for peripheral routing

• 5 mA source, 12.5 mA sink allows direct drive of LEDs

• Clock Sources

• Internal 48 MHz oscillator with accuracy of ±1.5% standaloneand ±0.25% using USB clock recovery

• Internal 24.5 MHz oscillator with ±2% accuracy

• Internal 80 kHz low-frequency oscillator

• External CMOS clock option

• Timers/Counters and PWM

• 3-channel Programmable Counter Array (PCA) supportingPWM, capture/compare, and frequency output modes

• 5 x 16-bit general-purpose timers

• Independent watchdog timer, clocked from the low frequency

oscillator

• Communications and Digital Peripherals

• USB 2.0-compliant full speed with integrated low-power

transceiver, 4 bidirectional endpoints, and dedicated 1 KBbuffer

• 2 x UART, up to 3 Mbaud

• SPI™ Master / Slave, up to 12 Mbps

• SMBus™/I2C™ Master / Slave, up to 400 kbps

• I2C High-Speed Slave, up to 3.4 Mbps

• 16-bit CRC unit, supporting automatic CRC of flash at 256-byte boundaries

• Analog

• 12-Bit Analog-to-Digital Converter (ADC)

• 2 x Low-current analog comparators with adjustable reference

• On-Chip, Non-Intrusive Debugging

• Full memory and register inspection

• Four hardware breakpoints, single-stepping

• Pre-loaded USB bootloader

• Temperature range -40 to 85 ºC

• Single power supply of 2.2 to 3.6 V or 3.0 to 5.25 V

• QSOP24, QFN28, and QFN20 packages

With on-chip power-on reset, voltage supply monitor, watchdog timer, and clock oscillator, the EFM8UB1 devices are truly standalone

system-on-a-chip solutions. The flash memory is reprogrammable in-circuit, providing nonvolatile data storage and allowing field upgrades

of the firmware. The on-chip debugging interface (C2) allows non-intrusive (uses no on-chip resources), full speed, in-circuit

debugging using the production MCU installed in the final application. This debug logic supports inspection and modification of memory

and registers, setting breakpoints, single stepping, and run and halt commands. All analog and digital peripherals are fully functional

while debugging. The on-chip 5V-to-3.3V regulator enables operation from 2.2 V up to a 5.25 V supply. Devices are available in 28-pin

QFN, 20-pin QFN, or 24-pin QSOP packages. All package options are lead-free and RoHS compliant.

　　· Silicon Labs红外接近传感器SI1153，检测范围无透镜0-50cm，感应角度±20°，检测范围宽，可满足人体感应灯对检测距离的要求;芯片自带940nm带通滤波，可以有效滤除掉使用环境中的其他波段可见光及红外光;驱动红外LED脉宽仅25.6μs，驱动电流从5.6mA-360mA可配置，9μA平均电流消耗，可使系统平均功耗降低，满足系统电池供电要求。

【Si1153】

Proximity/Ambient Light Sensor IC with I2C Interface

The Si1153-AA00/AA09/AA9x is an ambient light sensor, proximity, and gesture detectorwith I2C digital interface and programmable-event interrupt output.

This touchless sensor IC includes dual 23-bit analog-to-digital converters, an integratedhigh-sensitivity array of visible and infrared photodiodes, a digital signal processor, andthree integrated LED drivers with programmable drive levels. The Si1153 offers excellentperformance under a wide dynamic range and a variety of light sources, includingdirect sunlight. The Si1153 can also work under dark glass covers. The photodiode responseand associated digital conversion circuitry provide excellent immunity to artificiallight flicker noise and natural light flutter noise. With two or more LEDs, the Si1153 iscapable of supporting multiple-axis proximity motion detection. The Si1153 is provided ina 10-lead 2x2 mm DFN package or in a 10-lead 2.9x4.9 mm LGA module with integratedLED, and is capable of operation from 1.62 to 3.6 V over the –40 to +85 °C temperaturerange.

KEY FEATURES

• Proximity detector

• From under 1 cm, to 50 cm withoutadditional lensing.

• From under 1 cm, to 200 cm with additional lensing (e.g., 5 mm hemispherical lens as in our EVB).

• Up to three independent LED drivers.

• 30 current settings from 5.6 mA to 360mA for each LED driver.

• Operates in direct sunlight with optionalon-die 940 nm passband filter.

• On die 940 bandpass filter that rejectsunwanted visible light and IR fromdaylight and other sources (Si1153-AA09/AA9X).

• Ambient light sensor

• <100 mlx resolution possible, allowingoperation under dark glass.

• Up to 128 klx dynamic range possibleacross two ADC range settings.

• Industry’s lowest power consumption

• 1.62 to 3.6 V supply voltage.

• 9 μA average current (LED pulsed 25.6μs every 800 ms at 180 mA plus 3 μASi1153 supply).

• <500 nA standby current.

• 25.6 μs LED “on” time keeps total powerconsumption duty cycle low withoutcompromising performance or noisecommunity.

• Internal and external wake support.

• Built-in voltage supply monitor andpower-on reset controller.

APPLICATIONS

• Wearables

• Handsets

• Display backlighting control

• Consumer electronics

1. Feature List

• Proximity detector

• From under 1 cm to 50 cm without additional lensing.

• From under 1 cm to 200 cm with additional lensing (e.g., 5mm hemispherical lens).

• Up to three independent LED drivers.

• 30 current settings from 5.6 mA to 360 mA for each LEDdriver.

• Operates in direct sunlight with optional on-die 940 nmpassband filter.

• On die 940 bandpass filter that rejects unwanted visible lightand IR from daylight and other sources (Si1153- AA09/AA9X).

• Ambient light sensor

• <100 mlx resolution possible, allowing operation under darkglass.

• Up to 128 klx dynamic range possible across two ADCrange settings.

• Industry’s lowest power consumption

• 1.62 to 3.6 V supply voltage.

• 9 μA average current (LED pulsed 25.6 μs every 800 ms at180 mA plus 3 μA Si1153 supply).

• <500 nA standby current.

• 25.6 μs LED “on” time keeps total power consumption dutycycle low without compromising performance or noise community.

• Internal and external wake support.

• Built-in voltage supply monitor and power-on reset controller.

• Trim-able internal oscillator with typical 1% accuracy.

• I2C Serial communications

• Up to 3.4 Mbps data rate.

• Slave mode hardware address decoding.

• Two package options:

• 10-lead 2 x 2 x 0.65 mm DFN

• 10-lead 2.9 x 4.9 x1.2 mm LGA module with integrated 940nm LED

• Temperature Range: –40 to +85 °C