Heterogeneous multi-channel wireless sensor network based underground monitoring system

The invention discloses a heterogeneous multi-channel wireless sensor network based underground monitoring system and relates to the field of technical application of underground wireless sensor networks. In the invention, a heterogeneous networking mode of combining wired communication and wireless communication is adopted in the network architecture, and star-style topology is adopted in all subnets; a radio-frequency signal air interface and an asynchronous communication serial interface are used for forming two stages of networks by layers to finish the work of data transmission; the network comprises subnet data acquisition nodes ED-S, subnet data convergence nodes AP-S, backbone network receiving nodes ED-M and backbone network convergence nodes AP-M; the subnet data acquisition nodes ED-S comprise a sensor module, an energy management module and a radio frequency module which are mutually connected; and the subnet data convergence nodes AP-S, the backbone network receiving nodes ED-M and the backbone network convergence nodes AP-M comprise an energy management module and a radio frequency module. The invention improves the stability and prolongs the service life of the network and the reliability of communication, and meanwhile, network grouping is quicker, thus the requirement on the application of various wireless sensors can be met.