CN201417152Y

CN201417152Y - Portable multi-parameter cropland information acquisition instrument

Info

Publication number: CN201417152Y
Application number: CN2009201033276U
Authority: CN
Inventors: 张淑娟; 裘正军; 王凤花
Original assignee: Shanxi Agricultural University
Current assignee: Shanxi Agricultural University
Priority date: 2009-06-15
Filing date: 2009-06-15
Publication date: 2010-03-03
Anticipated expiration: 2019-06-15

Abstract

The utility model relates to cropland information acquisition, particularly to a portable multi-parameter cropland information acquisition instrument, which meets the requirements of the cropland information acquisition of precision agriculture, and comprises an information processing host computer, and soil property sensors for soil parameter detection, wherein the information processing host computer comprises a housing and an information processing circuit arranged in the housing; the information processing circuit comprises a single chip microcomputer, a memory device connected with the single chip microcomputer, a GPS receiving module, a MAX232 level conversion chip, an A/D conversion chip, a humiture sensor for environmental humiture detection, and a signal amplification circuit withthree output terminals thereof connected with the A/D conversion chip; and an LCD display screen and a keyboard connected with the single chip microcomputer, a communication interface connected withthe MAX232 level conversion chip, and an information acquisition interface capable of realizing the electrical connection between each sensor and the information processing circuit are mounted on thehousing. The utility model with reasonable and compact structure can quickly realize the positioning of cropland measuring points as well as the measuring of various kinds of soil property informationand environment information at the cropland measuring points.

Description

Portable, multiple parameter field information acquisition instrument

Technical field

The utility model relates to field information acquisition, specifically is a kind of Portable, multiple parameter field information acquisition instrument.

Background technology

Precision agriculture is based on the modern agriculture of information and knowledge support, its core is to obtain the information of sub-district, farmland soil and crops dynamically, in real time, the reason of diagnosis crop growing state and output space and time difference, and the sub-district irrigated, applies fertilizer, sprays medicine accurately, improve the utilization ratio of water, fertilizer and medicine to greatest extent, increase output, reduce environmental pollution, obtain best economic benefit and ecological benefits.Wherein, fast and effeciently gathering and describing influences the field of plant growth information, is the important foundation of carrying out the precision agriculture practice.Characteristics such as field information roughly can be divided into soil attribute information (as: soil moisture content, soil density, the soil moisture, soil conductivity, soil pH value etc.), positional information, plant growth information, farm environment information (as the humiture of environment) and crop yield information etc., and the amount of having is big, multidimensional, dynamic, uncertain, imperfect, sparse property, spatial and temporal variation are strong.Therefore, because the singularity of field information acquisition: field survey, measurement range are wide, measurement point dispersion etc., if use the instrument of single measuring ability to measure agricultural land information, a kind of agricultural land information of so every survey will be repeatedly in farmland zone location, sampling, measurement, data processing.Not only will expend a large amount of manpowers, and efficient is low, real-time is poor, can not satisfy the demand of precision agriculture field information acquisition.

Summary of the invention

The utility model be in order to satisfy the demand of precision agriculture field information acquisition, is primarily aimed at obtaining of soil attribute information, positional information, farm environment information, and a kind of Portable, multiple parameter field information acquisition instrument is provided.

The utility model is to adopt following technical scheme to realize: Portable, multiple parameter field information acquisition instrument comprises information processing host, is used to detect soil moisture sensor, soil density sensor, soil conductivity sensor, soil pH value sensor, the soil moisture sensor of soil parameters; Information processing host comprises casing, places the information-processing circuit in the casing; The Temperature Humidity Sensor and 3 tunnel that information-processing circuit comprises single-chip microcomputer, storer, GPS receiver module, MAX232 level transferring chip, A/D conversion chip, be used for the testing environment humiture is respectively applied for soil density sensor, soil conductivity sensor, soil pH value signal of sensor is carried out the amplifying signal amplifying circuit, storer, GPS receiver module, MAX232 level transferring chip, A/D conversion chip and Temperature Humidity Sensor link to each other with single-chip microcomputer, and the output terminal of signal amplification circuit links to each other with the A/D conversion chip; Casing is provided with LCD display, keyboard, the communication interface that is connected with the MAX232 level transferring chip that is connected with single-chip microcomputer and realizes the information acquisition interface that each sensor is connected with information-processing circuit, and the probe of Temperature Humidity Sensor is arranged at the casing outside.For information processing host can transfer to host computer by wireless transmission method with the agricultural land information that collects, Acquisition Instrument described in the utility model also disposes the GSM communication module that adopts with information processing host communication interface of the same type.

In addition, in order to reduce the volume of information processing host, further realize purpose easy to carry, the information acquisition interface of information processing host adopts the shared mode of interface, 1-2 information acquisition interface promptly only is set, when the measured soil different attribute, corresponding sensor is linked to each other with a corresponding information collection interface wherein, can under Single-chip Controlling, carry out the measurement of corresponding soils attribute.

Described soil moisture sensor, soil density sensor, soil conductivity sensor, soil pH value sensor, soil moisture sensor, Temperature Humidity Sensor are existing known products, can directly be buied by the market;

Compared with prior art, with Acquisition Instrument described in the utility model when each farmland measurement point carries out field information acquisition, the GPS receiver module that is built in information processing host can obtain the GPS positioning signal of measurement point when gathering field information attribute value, and transfer to single-chip microcomputer, handle warp, the latitude information that draws the farmland measurement point by single-chip microcomputer, be convenient to set up fast the corresponding relation of geographic position and farmland situation; Be built in the Temperature Humidity Sensor of information processing host, can measure temperature, humidity and the dewpoint temperature of current environment by the probe that is arranged at the casing outside in real time; With the external soil attribute sensor of information processing host to each soil attribute: soil moisture, soil density, the soil moisture, soil liquid pH value and electrical conductivity of soil solution carry out in real time, fast detecting; Sensor transfers to detection signal the single-chip microcomputer of information-processing circuit, under corresponding software is supported, single-chip microcomputer will be handled parameter value that obtains or the parameter value that directly acquires via LCD display demonstration, memory stores through converting, simultaneously, after MAX232 level transferring chip level conversion, warp, latitude information and soil attribute information, ambient temperature and humidity information that will be corresponding with measurement point by communication interface be uploaded to host computer by wired or wireless communication modes, by host computer carry out follow-uply gathering, analyzing and processing.Single-chip microcomputer, storer, GPS receiver module, MAX232 level transferring chip, A/D conversion chip, the Temperature Humidity Sensor that described information-processing circuit adopts all is existing known integrated circuit (IC) chip, after the model of each chip is selected, between annexation be that those skilled in the art are known, and the signal amplification circuit in the information-processing circuit also is existing known circuits, and the circuit distortion is a lot, therefore, information-processing circuit is not described in the instructions, only provide and to realize the circuit theory diagrams portion, see shown in the accompanying drawing 2.

The utility model is rational in infrastructure, compact, can realize the location of farmland measurement point and the measurement of multiple soil attribute information of farmland measurement point (soil moisture content, soil density, the soil moisture, soil conductivity, soil pH value) and environmental information (ambient temperature and humidity) fast, satisfy the demand of precision agriculture field information acquisition.

Description of drawings

Fig. 1 is a functional-block diagram of the present utility model;

Fig. 2 is a physical circuit schematic diagram of the utility model information-processing circuit;

Embodiment

Portable, multiple parameter field information acquisition instrument comprises information processing host, is used to detect soil moisture sensor, soil density sensor, soil conductivity sensor, soil pH value sensor, the soil moisture sensor of soil parameters; Information processing host comprises casing, places the information-processing circuit in the casing; The Temperature Humidity Sensor and 3 tunnel that information-processing circuit comprises single-chip microcomputer, storer, GPS receiver module, MAX232 level transferring chip, A/D conversion chip, be used for the testing environment humiture is respectively applied for soil density sensor, soil conductivity sensor, soil pH value signal of sensor is carried out the amplifying signal amplifying circuit, storer, GPS receiver module, MAX232 level transferring chip, A/D conversion chip and Temperature Humidity Sensor link to each other with single-chip microcomputer, and the output terminal of signal amplification circuit links to each other with the A/D conversion chip; Casing is provided with LCD display, keyboard, the communication interface that is connected with the MAX232 level transferring chip that is connected with single-chip microcomputer and realizes the information acquisition interface that each sensor is connected with information-processing circuit, and the probe of Temperature Humidity Sensor is arranged at the casing outside.Also dispose the GSM communication module that adopts with information processing host communication interface of the same type.

During concrete enforcement, soil moisture sensor adopts SWR-2 type soil moisture sensor; The CL-YB-13 type resistance-strain pull pressure sensor that the soil density sensor adopts Hangzhou sensor factory to produce; A programmable digital temperature sensor DS18B20 type temperature sensor that soil moisture sensor adopts U.S. DALLAS semiconductor company to produce based on the 1-Wire bus protocol; The soil pH value sensor adopts the high-performance pH combination electrode ASP2101 electrode of Wuhan energy generation chemistry company limited; The soil conductivity sensor adopts the SDL-1 type conductance electrode of Wuhan energy generation chemistry company limited; Temperature Humidity Sensor adopts digital temperature-humidity sensor SHT11; Single-chip microcomputer adopts the 78LE58 chip of Winbond company; The built-in 16 passage GPS receiver module LEA-4S that the GPS receiver module adopts u-BloxAG company to produce; The TLC2543 type A/D conversion chip that the A/D conversion chip adopts TIX (TI) to produce; Keyboard adopts the determinant button; LCD display adopts 122 * 32 character-type liquid crystal display module TJDM12232C; The programmable read only memory AT24C512 that the 512K bit serial electricity that storer adopts atmel corp to produce can be wiped; The GSM communication module adopts the Wavecom WMOD2BModem of Wavecom company development; Communication interface is a standard RS232 interface; Casing adopts engineering plastics to make, and has both alleviated instrument quality, has satisfied requirement of strength again.

Claims

1, a kind of Portable, multiple parameter field information acquisition instrument is characterized in that: comprise information processing host, be used to detect soil moisture sensor, soil density sensor, soil conductivity sensor, soil pH value sensor, the soil moisture sensor of soil parameters; Information processing host comprises casing, places the information-processing circuit in the casing; The Temperature Humidity Sensor and 3 tunnel that information-processing circuit comprises single-chip microcomputer, storer, GPS receiver module, MAX232 level transferring chip, A/D conversion chip, be used for the testing environment humiture is respectively applied for soil density sensor, soil conductivity sensor, soil pH value signal of sensor is carried out the amplifying signal amplifying circuit, storer, GPS receiver module, MAX232 level transferring chip, A/D conversion chip and Temperature Humidity Sensor link to each other with single-chip microcomputer, and the output terminal of signal amplification circuit links to each other with the A/D conversion chip; Casing is provided with LCD display, keyboard, the communication interface that is connected with the MAX232 level transferring chip that is connected with single-chip microcomputer and realizes the information acquisition interface that each sensor is connected with information-processing circuit, and the probe of Temperature Humidity Sensor is arranged at the casing outside.

2, Portable, multiple parameter field information acquisition instrument according to claim 1 is characterized in that: also dispose the GSM communication module that adopts with information processing host communication interface of the same type.