INVENTARIO DE MÁQUINAS EXPENDEDORAS USANDO UNA LPWAN
Resumen
Resumen
Se presenta un sistema que permite visualizar desde la Internet el inventario de máquinas expendedoras de productos (vending machine) conectadas a una red de área amplia de baja potencia (LPWAN). El sistema consiste de tres nodos y una puerta de enlace o gateway. Cada nodo conecta una máquina expendedora con el gateway. En cada venta, el nodo transmite inalámbricamente al gateway el identificador del producto y la cantidad disponible del mismo. El gateway envía esta información a un servidor ubicado en la nube. El administrador de las máquinas puede visualizar el inventario de productos usando una interfaz de usuario que se ejecuta en una computadora conectada a la Internet. Cada nodo de la LPWAN se compone de un transceptor LL-RXR-27 y una tarjeta Arduino Due. La LPWAN se conecta al servidor de red ubicado en los servicios web de Amazon. La máquina expendedora más lejana se ubicó a 384 metros del gateway y el alcance de los transceptores fue 19 kilometros.
Palabras Claves: Arduino Due, máquinas expendedoras, puerta de enlace, red de área amplia, transceptor.
INVENTORY OF VENDING MACHINES USING A LPWAN
Abstract
This paper presents a system that allows to visualize from the Internet the inventory of vending machines connected to a low power wide area network (LPWAN). The system consists of three nodes and one gateway. Each node connects a vending machine with the gateway. In each sale, the node transmits wirelessly to the gateway the product identifier and the available quantity of the same. The gateway sends this information to a server located in the cloud. The machine manager can view the inventory of products using a user interface that runs on a computer connected to the Internet. Each node of the LPWAN consists of an LL-RXR-27 transceiver and an Arduino Due card. The LPWAN connects to the network server located on Amazon web services. The most distant vending machine was located 384 meters from the gateway and the reach of the transceivers was 19 kilometers.
Keywords: Arduino Due, gateway, LPWAN, transceiver, vending machine.
Texto completo:
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