A Portable Embedded Data Acquisition and Communication System

A Portable Embedded Data Acquisition and Communication System

Ran Zhang (Patent Examination Cooperation Center of the Patent Office, SIPO, Beijing, China)
DOI: 10.4018/japuc.2012100101
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Abstract

The data acquisition equipment is very useful and popular equipment in agriculture and the other fields. This paper introduces the design of a portable data acquisition and communication system used in cropland. It collect signals of various analog and digital sensors, GPS space and time data, saving data by USB interface and transmission through WCDMA or Bluetooth. The key technology of the system is the use of embedded microprocessor (ARM), Linux Operating system and WCDMA wireless communication. This paper mainly analyzed the basic principle, hardware interface and software flow chart of this system.
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1. Introduction

Precision Agriculture is modern agricultural production, which is also the quintessence of environment protection and continuous farming (Wang, 2009). Precision agriculture is based on information collection, transmission, storage and analysis. With the development of technology, there are more and more new information technologies applied in agriculture domain. Many companies produce all kinds of equipments including advance technology (Mei, 2008). They can use either in tractor or by hand. However, these products are very expensive and the operating-interfaces are usually designed in foreign language. So they do not suit Chinese. In our country, the research of “precision Agriculture” is in the beginning stage now. The future of its technology relies on the getting of actual and effective data. Due to the characteristic of low-power, low-cost and high-performance, it has been applied popularly in the embedded systems today (Wang, 2009; Mei, 2008). By comparing with products alike inside and outside, we find that embedded systems based on ARM microprocessor have many advantages, such as portable, easy-using, flexible, cheaper etc.

Considering the actual demand of data acquisition in cropland, a portable data acquisition and communication system is designed based on the ARM (Zhou, 2010; Berger, 2010). It obtains the information from various sensors (Temperature/Humidity/attribute/diseases/insect pests) and GPS signal, analyses and processes the data, then stores them in the storage device or packs with TCP/IP protocol and transmits them to the data control center through WCDMA or Bluetooth. This paper will describe the design progress of this system.

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