Abstract
The efficient and accurate collection of agricultural product market information serves as the basis for the effective regulation of agricultural product markets. To achieve a comprehensive, accurate, and timely collection of agricultural product market information, this study puts forth a technique for collecting holographic information of agricultural product markets. A portable human-machine interaction device with an Advanced RISC (reduced instruction set computer) Machines (ARM)-based processor as the core is developed. Holographic information such as agricultural product market trading time, trading place, product name, price, and trading volume can be collected. Via embedded technology and component technology, innovative agricultural product market positioning, and matching, standardized collection, and data processing, and in combination with intelligent algorithms for analysis and early warning, a mobile application terminal for information collection is developed, namely, a holographic information collector for agricultural product markets (named Nongxincai). By using a layered structure, the hardware integrates microprocessor, storage, power, application and communication interface, and human-machine interaction modules. The device has the advantages of miniaturization, the whole-machine power consumption of less than 0.5 W, and continuous operating time of at least 10 h. A supporting software system for Nongxincai has also been developed, in which Microsoft Windows Mobile 6.5 is employed as the operating system, and the CPU frequency is up to 600 MHz. This configuration fully meets the computing requirements of map processing and large-volume data processing and has high compatibility. Nongxincai has been popularized and applied in 12 provinces/municipalities in China. It has played an important role in the monitoring and early warning of different varieties of agricultural products and target prices of soybean and cotton. Keywords: agricultural product market, holographic information, portable, user-interactive, information collector, monitoring and early warning DOI: 10.25165/j.ijabe.20201303.5845 Citation: Xu S W, Li D H, Zhang Y E, Chen W, Zhuang J Y, Liu J J, et al. Development of portable user-interactive holographic information collector for agricultural product markets. Int J Agric & Biol Eng, 2020; 13(3): 143–153.
Highlights
In recent years, as the price volatility of agricultural products, especially fresh agricultural products, has been aggravated, sudden and sharp rises and falls have occurred from time to time, and the pressure to maintain an effective supply of agricultural products and market stability has continued to increase[1]
To meet the needs of information collector personnel in collecting on-site agricultural product market information, we propose a design for automatic positioning and matching of agricultural product market (Figure 3), in which the geographic locations of agricultural product markets are automatically positioned using global positioning system (GPS), followed by one-to-one matching
To improve the fault-tolerance rate of the check code and analyze the basic characteristics of the digital encoding, an automatic generation and identification system for market information check codes were constructed based on the ISO 7064 MOD97-10 check code, which effectively solves single-character substitution, swap, displacement, and other errors, thereby improving the quality of data transmission
Summary
As the price volatility of agricultural products, especially fresh agricultural products, has been aggravated, sudden and sharp rises and falls have occurred from time to time, and the pressure to maintain an effective supply of agricultural products and market stability has continued to increase[1]. Comprehensive, and effective identification, tracking, monitoring, and grasping of abnormal market information is urgently needed to stabilize the agricultural product market. For a long time, the collection of agricultural product market information has had serious issues. Other problems include insufficient technical means for agricultural information acquisition and lack of high-performance, low-cost equipment for information collection. These problems make it difficult to meet the technical requirements of real-time and accurate product monitoring and early warning, which has become a bottleneck that restricts the stable development of modern agriculture[2]
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