Abstract: Provided is a battery mounting assembly including a battery portion, and a battery mounting portion on which the battery portion slides to be mounted, wherein the battery portion includes: a first guide configured to guide a sliding movement of the battery portion; a first connection terminal arranged on a surface of the battery portion; a fixing pin arranged on the battery portion; and a fixing pin retreat button configured to retreat the fixing pin, wherein the battery mounting portion includes: a second guide configured to guide the sliding movement of the battery portion; a second connection terminal arranged on a surface of the battery mounting portion and connected to the first connection terminal; and a fixing hole formed in the surface of the battery mounting portion and into which the fixing pin is inserted.

Abstract: Provided is a battery mounting assembly including a battery portion, and a battery mounting portion on which the battery portion slides to be mounted, wherein the battery portion includes: a first guide configured to guide a sliding movement of the battery portion; a first connection terminal arranged on a surface of the battery portion; a fixing pin arranged on the battery portion; and a fixing pin retreat button configured to retreat the fixing pin, wherein the battery mounting portion includes: a second guide configured to guide the sliding movement of the battery portion; a second connection terminal arranged on a surface of the battery mounting portion and connected to the first connection terminal; and a fixing hole formed in the surface of the battery mounting portion and into which the fixing pin is inserted.

Abstract: This invention proposes unique methods and apparatus for networking low cost low energy sensor nodes. The invention focuses on efficient Media Access Control (MAC) schemes to provide differentiated Quality of Service (QoS) to the sensor nodes in single-hop wireless and wired networks where the source nodes do not have a receiver module. Hence they can only transmit data to a sink but cannot receive any control signals, like an ACK or NAK, from any other node. None of the existing schemes like polling or scheduled transmissions, CSMA or ARQ is thus effective in this type of networks. The proposed scheme provides QoS to the nodes using distributed control by allowing them to transmit each packet an optimal number of times within a given interval.