Aiming at the problem that

at present

human-screen interactive mode applied to light-emitting diode（LED） display in market is mostly for the design of small size display

but has limitations for outdoor large-size LED display

a LED display interactive system based on capacitive proximity sensing is proposed.Depending on the electric field change triggered by sensors to locate the touch mode and the integrated design of distributed embedded LED display

it breaks through interactive detection restriction on environmental light and display size.To improve the stability of the system

an adaptive base-value integrated filtering algorithm is proposed for the interactive induction error triggering caused by the change of ambient temperature during usage of the system.The experimental results show that the designed system has strong environmental adaptability

accurate detection and positioning

and has certain advantages in large-screen interactive applications.