TIDA-01586 Reference Design

Texas Instruments

IR LED Illumination and ICR Control Reference Design for IP Network Cameras With Day/Night Vision

Description

This reference design showcases an Infrared LED illumination sub-system for Internet Protocol (IP) network cameras with day and night vision. The system features a cut filter control: LED dimming: ambient light measuring and ballasting for current of each IR LED string. Ballasting is an alternative for driving multi-string LED arrays with a single string LED driver while maintaining uniform illumination under low-light conditions. The OPT3001 Ambient Light Sensor (ALS) with precise visible light measuring and good IR rejection: is an ideal preferred replacement for photodiodes: photoresistors or other ambient light sensors.

Features
  • Incorporates current ballasting to equalize IR LED currents between strings in a multi-string LED array while using a single-string LED controllerOffers firmware-adjustable ambient light level thresholds and ambient light measurement modesOffers PWM-adjustable illumination brightness levelsOffers ICR open or close control for day and night vision by using a simple motor driverIncorporates the ability to operate from either a 12-V or 5-V power supplyDesigned with headers compatible with BoosterPack™ plug-in module ecosystem with software designed to work with MSP430FR2311 MCU LaunchPad™
Applications
  • Video doorbell
  • Eye
  • ear
  • nose & throat exam
  • Thermal imaging camera
  • IP network camera
  • Wireless security camera
Product Categories
  • Sensors