18-08-2012, 12:47 PM
Design of SMS based query system for products availability
Design of SMS.docx (Size: 24.62 KB / Downloads: 29)
Abstract:
A query system based on the mobile network is gaining importance as mobile network is deployed everywhere. Also sending query SMS by mobile is very cheap. This system is very useful in markets where same type of query is again and again asked by different people. Query may be related to cost of stock available in market.
In this system one gateway which is located at one place is communicated to user mobile via GSM modem. The gateway, which communicates with mobile phone via GSM Modem, receives the coded queries from users and sends packed results back. The software which communicates with the gateway system via SMS, packs users’ requests, IDs and codes, and sends the package to the gateway; then interprets the packed data for the users to read on a page of GUI.
The gateway may be connected to other gateway using internet connection to form a big network. The limitation of this system is that we can’t send big SMS, secondly we have to send SMS in predefines coded format which can be understand by gateway. The reply we get is also in the predefined format only.
The proposed system includes GSM modem and an microcontroller based embedded board. The received SMS from mobile phone at modem send to embedded board. Embedded board having program that will send reply to predefined coded message.