CN202562881U

CN202562881U - Carbon dioxide concentration wireless acquiring node with positioning function

Info

Publication number: CN202562881U
Application number: CN2012202471068U
Authority: CN
Inventors: 田立国; 刘玥; 李猛; 卢胜利; 吴兴利
Original assignee: Tianjin University of Technology
Current assignee: Tianjin University of Technology
Priority date: 2012-05-29
Filing date: 2012-05-29
Publication date: 2012-11-28
Anticipated expiration: 2022-05-29

Abstract

The utility model discloses a carbon dioxide concentration wireless acquiring node with positioning function, being used for acquisition of carbon dioxide concentration based on the accurate space position in crop grow microenvironment and for transition of carbon dioxide concentration and the coordinates of the space position by adopting a ZigBee wireless communication module. The node comprises an ATmega8L controller (1), a carbon dioxide concentration acquisition module (2), a GPS (Global Position System) module (3), the ZigBee wireless communication module (4) and a power supply module (5). The node is simple in structure, low in cost and has certain practical value.

Description

The gas concentration lwevel wireless collection node that has positioning function

Technical field

The utility model relates in a kind of crop growth microenvironment the gas concentration lwevel harvester based on accurate locus; Adopt 8 8-digit microcontrollers, MG811 gas concentration lwevel sensor and GPS locating module that the gas concentration lwevel in the crop growth microenvironment of accurate locus under the yardstick of field is gathered specifically, and utilize the ZigBee wireless communication module to carry out the wireless transmission of data.

Background technology

At present, modern agriculture strides forward to the precision direction.Precision agriculture is the emerging interdisciplinary complex art that international agriculture field of phase early 1980s grows up; It is a kind of important modern agriculture form that grows up on the basis of a series of new and high technology last words such as infotech, biotechnology, engineering in modern times, possesses put agricultural resources to rational use, improves crop yield, characteristics such as reduce production costs, improve the ecological environment.The field information acquisition technology plays an important role in the implementation process of precision agriculture; Low cost, high efficiency intelligent equipment are applied to field information acquisition; Obtain multiple Real-time and Dynamic microenvironment information such as the humiture that influences crop growth under the yardstick of field, illumination, gas concentration lwevel, can better advance the enforcement of precision agriculture based on accurate locus.

The english abbreviation of range-finding navigation/GPS (Navigation Satellite Timing And Ranging/Global Positioning System) was called for short " GPS " when GPS (Global Positioning System) was the satellite survey.This system is to be the radio-navigation positioning system on basis with the satellite; Have navigation, location and the function regularly of totipotency (land, ocean, aerospace), global, round-the-clock, continuity and real-time, can be provided accurate three-dimensional coordinate, speed and the time for all types of user.The development of GPS, obtaining positional information when obtaining agricultural land information synchronously provides one to select easily.GPS equipment can provide spatial positional information accurately; Technological the obtaining with agricultural land information of GPS combined; When obtaining agricultural land information, obtain spatial positional information synchronously; Thereby the Real-time and Dynamic microenvironment information of each locus in the acquisition farmland, for the enforcement of precision agriculture provides the data support.

Along with the development of wireless sensor network technology, and the farmland microenvironment information data characteristics of gathering, wireless sensor network technology is applied to the particularly data acquisition of microenvironment information of modern agriculture by increasing.A kind of as in the wireless sensor network technology of ZigBee technology has characteristics such as cost is low, low in energy consumption, network capacity is big, data transmission is reliable, is of wide application.

Summary of the invention

The utility model technical matters to be solved is, the gas concentration lwevel acquisition node based on accurate locus is provided under a kind of with low cost, simple in structure, field yardstick of being easy to promote.

The technical scheme that the utility model adopted is: a kind of gas concentration lwevel wireless collection node that has positioning function, have controller, and also comprise the gas concentration lwevel acquisition module that is used for providing gas concentration lwevel that links to each other with controller to controller; The GPS locating module that is used to provide accurate locus that links to each other with controller; The ZigBee wireless communication module that is used to carry out the data wireless transmission that links to each other with controller.

Described gas concentration lwevel acquisition module links to each other with an analog to digital converter (ADC) interface of controller, is made up of carbon dioxide sensor MG811 and integrated operational amplifier TLC271.

Described GPS locating module links to each other with the I/O mouth of controller, adopts the simulative serial port sequential to receive the coordinate information of GPS locating module output.

Described ZigBee wireless communication module links to each other with the serial ports of controller, and CC2530 forms by radio frequency chip, is used for carrying out the data wireless transmission.

Description of drawings

Fig. 1 is the entire block diagram of the utility model;

Fig. 2 is the utility model gas concentration lwevel acquisition module circuit theory diagrams;

Fig. 3 is the utility model GPS locating module circuit theory diagrams;

Fig. 4 is the utility model ZigBee wireless communication module circuit theory diagrams;

Fig. 5 is the power circuit principle figure of the utility model

Embodiment

Below in conjunction with accompanying drawing and instance the utility model is described further.

The gas concentration lwevel wireless collection node that has positioning function of the utility model; To pass through sensor acquisition behind single-chip microcomputer based on the envirment factor gas concentration lwevel in the crop growth microenvironment of accurate locus, after handling through single-chip microcomputer data will be transferred to host node through wireless communication module.

As shown in Figure 1, the gas concentration lwevel wireless collection node that has positioning function of the utility model has controller (1), also comprises the gas concentration lwevel acquisition module (2) that is used for providing to controller gas concentration lwevel that links to each other with controller; The GPS locating module (3) that is used to provide accurate locus that links to each other with controller; The ZigBee wireless communication module (4) that is used to carry out the data wireless transmission that links to each other with controller; The power module that is used to provide power supply (5) that links to each other with the ZigBee wireless communication module with controller.

As shown in Figure 2, the gas concentration lwevel acquisition module is made up of carbon dioxide sensor MG811 and integrated operational amplifier TLC271, is transferred to the A D C interface of controller after the voltage signal of MG811 output amplifies through amplifying circuit, accomplishes the input of data-signal.

As shown in Figure 3, the GPS locating module adopts global positioning satellite receiving chip Gstar series GS-89 to form, and is continuous through the I/O mouth of controller, adopts the simulative serial port sequential to accomplish the reception of gps coordinate information.

As shown in Figure 4, the ZigBee wireless communication module adopts radio frequency chip CC2530, and is continuous through the serial ports of controller, carries out the data wireless transmission.

As shown in Figure 5, controller and ZigBee wireless communication module adopt 3.3V voltage, so adopt the integrated voltage stabilizing chip of power supply AMS1117, convert supply voltage to 3.3V voltage.

Claims

1. a gas concentration lwevel wireless collection node that has positioning function has controller (1), it is characterized in that, also comprises the gas concentration lwevel acquisition module (2) that links to each other with controller (1); The GPS locating module (3) that links to each other with controller (1); The ZigBee wireless communication module (4) that links to each other with controller (1).

2. the gas concentration lwevel wireless collection node that has positioning function according to claim 1; It is characterized in that: described gas concentration lwevel acquisition module (2) links to each other with an analog to digital converter (ADC) interface of controller (1); Be used for the aanalogvoltage of survey sensor output, thereby convert gas concentration lwevel to.

3. the gas concentration lwevel wireless collection node that has positioning function according to claim 1; It is characterized in that: described GPS locating module (3) links to each other with the I/O mouth of controller (1), adopts the simulative serial port sequential to receive the coordinate information of GPS locating module output.

4. the gas concentration lwevel wireless collection node that has positioning function according to claim 1 is characterized in that: described ZigBee wireless communication module (4) links to each other with the serial ports of controller (1), is used for the data wireless transmission.