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. 2016 Oct 22;16(10):1762.
doi: 10.3390/s16101762.

A Portable Farmland Information Collection System with Multiple Sensors

Jianfeng Zhang  1 , Jinyang Hu  2 , Lvwen Huang  3 , Zhiyong Zhang  4 , Yimian Ma  5
Affiliations

A Portable Farmland Information Collection System with Multiple Sensors

Jianfeng Zhang et al. Sensors (Basel). .

Abstract

Precision agriculture is the trend of modern agriculture, and it is also one of the important ways to realize the sustainable development of agriculture. In order to meet the production requirements of precision agriculture-efficient use of agricultural resources, and improving the crop yields and quality-some necessary field information in crop growth environment needs to be collected and monitored. In this paper, a farmland information collection system is developed, which includes a portable farmland information collection device based on STM32 (a 32-bit comprehensive range of microcontrollers based on ARM Crotex-M3), a remote server and a mobile phone APP. The device realizes the function of portable and mobile collecting of multiple parameters farmland information, such as chlorophyll content of crop leaves, air temperature, air humidity, and light intensity. UM220-III (Unicore Communication Inc., Beijing, China) is used to realize the positioning based on BDS/GPS (BeiDou Navigation Satellite System, BDS/Global Positioning System, GPS) dual-mode navigation and positioning system, and the CDMA (Code Division Multiple Access, CDMA) wireless communication module is adopted to realize the real-time remote transmission. The portable multi-function farmland information collection system is real-time, accurate, and easy to use to collect farmland information and multiple information parameters of crops.

Keywords: CDMA; agriculture information collection; chlorophyll relative content; multiple sensors.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Scheme of the farmland information collection system.
Figure 2
Figure 2
Block diagram of the farmland information collection device.
Figure 3
Figure 3
Operation flowchart of the farmland information collection device.
Figure 4
Figure 4
Program flowchart of Chlorophyll measurement module.
Figure 5
Figure 5
Parsing flowchart of obtaining real-time location information, $ is the beginning character of all the messages, RMC provides the minimum recommended data message, and GSV describes the visible satellite messages.
Figure 6
Figure 6
Block diagram of the power supply system.
Figure 7
Figure 7
The experiment instrument of the farmland information collection device.
Figure 8
Figure 8
Farmland experiment.
Figure 9
Figure 9
Sample of farmland information—on 3 May 2016, at 15:13—including with the geographic coordinates by Lon (longitude, degree) and Lat (latitude, degree), Chlorophyll (chlorophyll relative content, SPAD), Environment information by the Temp (air temperature, °C), RH (air humidity, %), Light (light intensity, Lx), and CO2 (CO2 concentration, ppm) and Soil information by the Temp (soil temperature, °C), RH (soil humidity, %), and Elec con (soil electrical conductivity, µs/cm).
Figure 10
Figure 10
Interface of mobile phone APP in Chinese.
Figure 11
Figure 11
Fifty air temperature (°C) experimental results by MGT2.0 (marked by blue line) and AR837 (marked by red line).
Figure 12
Figure 12
FIfty air humidity (%RH) experimental results by MGT2.0 (marked by blue line) and AR837 (marked by red line).
Figure 13
Figure 13
Fifty light intensity (Lx) experimental results by MGT2.0 (marked by blue line) and DT-1308 (marked by red line).
Figure 14
Figure 14
Fifty chlorophyll relative content (SPAD) experimental results by MGT2.0 (marked by blue line) and SPAD-502 (marked by red line).
See this image and copyright information in PMC

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