AN WIRELESS COLLECTION AND MONITORING SYSTEM DESIGN BASED ON ARDUINO. Lu Shaokun 1,e*

Transcription

1 Advanced Materials Research Online: ISSN: , Vols , pp doi: / Trans Tech Publications, Switzerland AN WIRELESS COLLECTION AND MONITORING SYSTEM DESIGN BASED ON ARDUINO Yu Quansheng 1, a, Duan Meiying 1, b, Zhang Tianshun 2, c 3, d,, Wu Honggang Lu Shaokun 1,e* 1 College of Foundation and Information Engineering, Yunnan Agricultural University Yunnan province, China 2 College of Engineering and Technology, Yunnan Agricultural University, Yunnan province, China 3 School of Information, Yunnan University of Finance & Economics a @qq.com, b myduanx@yahoo.com, c tianshun73@126.com, d wuhg2000@126.com, e lsk999@126.com Keywords: Arduino mega2560; XBee; environmental data acquisition and monitoring Abstract Considering the current situation that the temperature control systems in market have the general disadvantages of complicated structure, high power consumption and tremendous cost, a new greenhouse temperature supervising system is designed, with a Arduino Mega 2560 single chip microcomputer as the core, XBEE as the short distance wireless transferring tools, and with function of displaying information in computers and remote control. The core component of this system is the Arduino software-hardware open source platform, which is currently popular in the market. This platform embraces the excellence of stability, low power consumption, cheap cost and easy operation as its advantages and selling points. XBEE can constitute the mesh network, each module of which can supplied as the route node, coordinator and terminal node. This system can achieve the functions of collecting data from sensors while is capable of displaying these data in the computers and put them under the network remote control. Easy to install, it can simultaneously achieve network monitoring several greenhouses. Enormous convenience to production inside the greenhouse is fulfilled due to these mentioned features as well, which makes it suitable to the small scale agricultural production. 1 Introduction The greenhouse temperature control error may cause the product and life safety, product quality, product yield and a series of problems. The hardware and software design of data acquisition system must be low power consumption, small volume, complete functions, good compatibility, high reliability and good maintainability and so on due to the complexity and diversity of greenhouse environment [1-3]. The traditional data acquisition system based on single chip microcomputer system is unable to or difficult to complete real-time data acquisition, data back, connected with the Internet, the expansion of the large capacity storage, and other functions, the application is restricted in many areas. With the rapid development of mobile Internet, 3G, Wi-Fi, GPRS wireless communication mode and miniaturization lightweight personal information terminal, the concept of things of Internet is proposed. It provides the possibility for the real-time environment monitoring and people All rights reserved. No part of contents of this paper may be reproduced or transmitted in any form or by any means without the written permission of Trans Tech Publications, (ID: , Pennsylvania State University, University Park, USA-09/05/16,17:42:41)

2 Advanced Materials Research Vols to access the status of the environmental information whenever and wherever. So it s possible to design the greenhouse data acquisition system to meet this demand. Arduino is based on open source software and hardware platform, built on open source simple version of the I/O interface, and Java such as Processing/Wiring of the C language in developing environment. The design of data acquisition system based on the Arduino in this paper is an equipment with real-time data automatic acquisition and automatically processing functions. Real-time data acquisition, automatic storage, multi-platform display, real-time control, network transmission, and other functions guarantee the authenticity, validity of field data, real-time and the availability. The system can be separated from the PC to complete data collection, the collected data for processing, storage, display and transmission that convenient for various forms of application. 2 Hardware design 2.1 Overall design of the hardware The system is composed of the circuit control component, storage component, collection operating component and wireless transmission. The collection operating component adopts monobus to deliver instructions and to receive data from sensors. The real-time clock chip is applied to display time. The storage part is divided into the SD card storage sensor and time data. The component of circuit control manages temperature of a greenhouse for the air blower. And the wireless transmission is constituted by the XBEE module which is in charge of sending and receiving data. The overall frame, such as Figure The wireless module XBee modules based on the IEEE standard build a low power consumption, low maintenance, and ad-hoc networks. Support point-to-point, point-to-multipoint (broadcast), peer topology. It can do automatic routing, auto-healing, and fault-tolerant Mesh networks. ZigBee network is also referred to as personal area network (PAN), defines three different device roles(coordinator, routing and Terminal).Each ad hoc network must have a coordinator which is responsible for selecting channels and PAN ID. Point-to-point short-distance wireless transmission is enabled AT (transparent transmission) mode. For networking you need a coordinator choose API mode, follow a strict frame processing functions and concentrate nodes for the Coordinator. This system uses multiple points to one point. General framework in Figure 2. Figure 1: General framework Figure 2: Wireless mesh network

3 1078 New Technologies for Engineering Research and Design in Industry 2.3 Collection and storage module One Wire bus connection figure is following, some simple DTH11 temperature humidity sensor and photosensitive sensor can achieve through one wire bus (and the single bus), because these sensor data volume is small, just using an I/O mouth of single bus can meet requirements. It can transmit both clock and data. What is more, data transferring is two-way. In a word, this single bus technology has simple line, little hardware cost, cost low, easy bus extended and maintenance advantages. SD card is small, good and generic store data component. You can use the SD (SD4/16GB Kingston) card and the Arduino as a data recording device to store any collected data. Arduino can easily communicate with the SD card through the SPI interface relatively. Digital pins 12 on Arduino Mage is directly connected to the pin 7 of the SD card,arduino s pin 10,11 and 13 by resistive voltage divider to the logic level(3.3v)is connected to the corresponding pins on the SD card, each for SCLK, MOSI, MISO and the SS pin. Clock chip uses a high-performance, low-power real-time clock chip DS1302, which has an additional 31 bytes static RAM, SPI3 line interface for synchronize communication with Arduino mage2560, 2.5v to 3.3v supported voltage. 3 System software design Figure 3: The overall circuit Its relevant software is IDE officially developed in java language by Arduino, adopting the program with characteristic of modularization. And it mainly consists of the monobus controlling program, time setting and collecting program, SD card storage program, XBEE wireless program in charge of sending and receiving, and the program to control electric appliances via relays. On the Figure 4 page, using the intuitive line chart displays each sensor data acquisition terminal. If sensor value is beyond a certain range, the red light of the corresponding sensor is bright, and the air blower opens which the user can also control manually by the corresponding switch. All the data can be exported Excel

4 Advanced Materials Research Vols spreadsheet for storage and analysis. Because experimental sensor placement is concentrated, so the temperature curve is concentrated. Arduino mega2560 programming of main Control Board consists of 3 parts: data collection, data transmission and data storage. Collection Terminal collects sensor data, writes to the SD card in real time, then gets time through the main Control Board. The XBee module of Router AT main control board sends data to the Coordinator API XBee module. Figure 4: Display the page This is a part of the experimental set up the experimental platform of physical figure 7 below, the Coordinator of the API XBee module in XBee USB floor, through the USB cable to connect computers, can through the computer to receive data from serial port. Figure 6: The flow chart Figure 7: Part of the physical 4 Discussion and conclusion Transceiver module adopts the XBee wireless transmission module, which transmission distance is 120 m in place without barrier, without data loss when more than one Router sending

5 1080 New Technologies for Engineering Research and Design in Industry data at the same time. Now on the market APC220 wireless module has certain limitation--only one rather than a more accept more. XBee network defines the transmission direction and transmission rate freely, and solves the transmission problems of all kinds of greenhouse environment. The using SD card to store data in real time is convenient for retrospective data query. Suggest to use web page display data, smart reminder and control. Greenhouse temperature management human cost is small since the total XBee network can realize the remote control operation, real-time view the diversity of the data and testing platform. This method avoids the original sampling equipment information acquisition method of the single, less display platform, installation of complex, high power consumption, high maintenance costs, using Arduino open-source platform simply and quickly, low cost, simple maintenance, data view and control way of multi-purpose variety. There are still some improvement in this system, such as the less types, the measured data of greenhouse humidity, PH value and light having a great influence on the growth of crops, control of electrical power being not covered, less friendly network interface, etc. References [1]. Titus, J.A. Experiment, 18 - How to Discover basis XBee Modules. 2012: p [2]. Lian, k. s. Hsiao and w. Sung, Intelligent multi - sensor control system -based on innovative technology integration via ZigBee and wi-fi networks. Journal of Network and Computer Applications, 2013, 36 (2) : p [3]. Shen, Z., et al., Porting LooCI Components into Zigduino. Procedia Computer Science, (0) : p [4]. Barroca, N., et al., Wireless sensor networks for temperature and humidity monitoring within concrete structures. The Construction and Building Materials, 2013, 40 (0) : p [5]. Teikari, P., et al., An inexpensive Arduino - -based LED stimulator system for vision research. The Journal of Neuroscience Methods, (2) : P [6]. Faugel, h. and v. Bobkov, Open source hard - and software: Using Arduino boards to keep old the hardware running. The Fusion Engineering and Design, (0). [7]. Microchip Digilent to launch its first united to the Arduino ~ (TM) compatible with 32-bit MCU development platform. Electronic design engineering, 2011 (14) : 106. [8]. Kevin Bristol, Arduino open source hardware. Science and technology entrepreneurship, 2011 (5) : [9]. Chen Yingying, ZigBee + Arduino + Android intelligent family. Electronic technology applications, 2011 (8) : page 2. [10]. Zheng Hao etc, based on the Arduino/Android bluetooth communication system design. The Internet of things technology, 2012 (05) : 50 - page 51. [11]. Yuan Benhua and Dong Zheng, the greenhouse temperature measurement system based on the Arduino panel design. Anhui agricultural science, 2012 (8) :

6 New Technologies for Engineering Research and Design in Industry / An Wireless Collection and Monitoring System Design Based on Arduino /