Wireless sensor networks（ WSNs） B-MAC protocol uses low energy consumption monitoring and extension leading technology

it has characteristics of low energy consumption and without synchronization. In view of characteristic of low energy consumption

low time delay of intelligent obstacle field network

a low time delay MAC protocol EB-MAC based on asynchronous scheduling strategy is proposed to improve the delay and packet loss rate of B-MAC protocol. Simulation experiment show that this protocol can effectively reduce the length of the preamble sequence

maintain a low duty ratio

reduce the communication delay from end to end

have good compatibility with the change of the network topology

and meet the performance requirements of the intelligent barrier field.