CN206332698U - A kind of Field Information Acquisition System based on GPS/GPRS/GSM integration modules - Google Patents

Abstract

The utility model provides a kind of Field Information Acquisition System based on GPS/GPRS/GSM integration modules, including A modules and B modules；A modules are information acquisition module, and B modules are information receiving module, and A modules include power subsystem, power supply power saving unit, GPS OEM plates, data acquisition unit, MCU control unit and GSM/GPRS units A；B modules include GSM/GPRS unit Bs and central station；The signal output part of GPS OEM plates in the A modules is connected by data acquisition unit and the signal input part of MCU control unit, the output end of power subsystem is connected by power supply power saving unit and the input of MCU control unit, the signal output part of MCU control unit is connected with GSM/GPRS units A signal input part, and GSM/GPRS units A is communicated to connect by the GSM/GPRS unit Bs in B modules and central station.The utility model carries out data transmission using GSM/GPRS duplex communication systems, and biggest advantage is that simple, the low-cost, wide coverage of connection and realized conveniently.

Description

A kind of Field Information Acquisition System based on GPS/GPRS/GSM integration modules

Technical field

The utility model is related to a kind of Field Information Acquisition System based on GPRS-GPS-GSM integration modules, belongs to automatic Positioning acquisition technical field.

Background technology

Design of system for farmland design is the GPS positioning system that make use of the U.S., in conjunction with GIS geographical information technologies With the product of GSM/GPRS mobile communication technologies.Its major function is the position (longitude and latitude for the mobile target that will be equipped with GPS Degree) and agricultural land information central station is sent to by wireless communication link, then intuitively shown in generalized information system.Adopt Also there are two kinds of selections with digital mobile communication system：One kind is trunked mobile communication system；Another is GSM/GPRS movements Communication system.But because trunked mobile communication system is special dispatching communications subsystem, therefore its coverage is also by larger Limitation, it uses the also publicization relatively difficult to achieve.Connect complicated, costly, coverage narrow, but real-time effect is poor.

Utility model content

In order to solve the above technical problems, the utility model provides a kind of field based on GPS/GPRS/GSM integration modules Information acquisition system, Field Information Acquisition System connection based on GPS/GPRS/GSM integration modules is simple, low-cost for this, cover Lid scope is wide and realizes conveniently.

The utility model is achieved by the following technical programs.

A kind of Field Information Acquisition System based on GPS/GPRS/GSM integration modules that the utility model is provided, including A Module and B modules；A modules are information acquisition module, and B modules are information receiving module, and A modules include power subsystem, power supply Power saving unit, GPS OEM plates, data acquisition unit, MCU control unit and GSM/GPRS units A；B modules include GSM/ GPRS unit Bs and central station；The signal output part of GPS OEM plates in the A modules is controlled by data acquisition unit and MCU The signal input part connection of unit, the output end of power subsystem is connected by power supply power saving unit and the input of MCU control unit Connect, the signal output part of MCU control unit is connected with GSM/GPRS units A signal input part, and GSM/GPRS units A passes through B GSM/GPRS unit Bs in module are communicated to connect with central station.

The master chip of the MCU control unit is W77E5E single-chip microcomputers.

GSM/GPRS units A and the GSM/GPRS unit B uses Siemens M20 single-frequency 900MHz gsm modules.

The GPS OEM plates are the Jupiter type GPS OEM plates of Rockwell companies

The beneficial effects of the utility model are：The utility model carries out data biography using GSM/GPRS duplex communication systems Send, biggest advantage is that simple, the low-cost, wide coverage of connection and realized conveniently.

Brief description of the drawings

Fig. 1 is theory diagram of the present utility model；

Fig. 2 is the circuit diagram of the single-chip microcomputer of data acquisition unit in Fig. 1；

Fig. 3 is the schematic diagram of GPRS/GSM unit A and GPRS/GSM unit Bs in Fig. 1.

Embodiment

Be described further below the technical solution of the utility model, but claimed scope be not limited to it is described.

A kind of Field Information Acquisition System based on GPS/GPRS/GSM integration modules as shown in Figures 1 to 3, including A moulds Block and B modules；A modules are information acquisition module, and B modules are information receiving module, and A modules include power subsystem, power supply section Can unit, GPS OEM plates, data acquisition unit, MCU control unit and GSM/GPRS units A；B modules include GSM/GPRS Unit B and central station；The signal output part of GPS OEM plates in the A modules passes through data acquisition unit and MCU control unit Signal input part connection, the output end of power subsystem connected by power supply power saving unit and the input of MCU control unit, The signal output part of MCU control unit is connected with GSM/GPRS units A signal input part, and GSM/GPRS units A passes through B modules In GSM/GPRS unit Bs and central station communicate to connect.

The master chip of the MCU control unit is W77E5E single-chip microcomputers.

GSM/GPRS units A and the GSM/GPRS unit B uses Siemens M20 single-frequency 900MHz gsm modules.

The GPS OEM plates are the Jupiter type GPS OEM plates of Rockwell companies

The serial port of single chip computer connection GPS OEM plates of described data acquisition unit, receive GPS information；Expanded using 82C51 Serial port is opened up, is connected, is communicated with gsm module with gsm module through TTL-RS232 level conversions.Mobile unit constitutes monolithic Machine timing extracts longitude and latitude degrees of data from GPS OEM plates, and soil information is measured from sensor, according to the order of user input, carries out Data are encapsulated, and central station is sent data to by the SMS service of gsm module.External control section point main function is to receive to match somebody with somebody System is put, and sends the outside control command such as data, outside control command is handled by single-chip microcomputer by I/O interfaces and interruption. 82C51 is used for extended serial port, is limited mainly due to by mcu resource.232 level converting sections be used for carry out TTL- RS232 level conversions.Gsm module is used for sending short message, and movable plate uses SIEMENS M20 modules.GPS OEM plates are used for The data such as positional information, temporal information are provided, one-time positioning data is exported each second, is input to through serial ports at single-chip microcomputer Reason, reading position information.Single-chip microcomputer and the communication of M20 modules utilize AT Command Set defined in GSM07.05 standards, this standard Form-the text formatting (Text Mode) and PDU forms of two kinds of short messages are provided.Information in text formatting is used ASCII character, can directly be read；And the information in PDU form short messages is binary coding, it is necessary to carry out encoding and decoding Work.For the sake of directly perceived, used herein is text formatting, and corresponding AT instructions can be used to be configured.

GSM/GPRS GSMs then can just overcome the shortcoming of trunked communication system, and its coverage is up to complete State various regions, this advantage is that other mobile communications networks are hardly matched.Meanwhile, GSM/GPRS is tied using cellular cell Structure, Small Section Mode is used in the intensive area of user, improves frequency efficiency, also there is no problem for capacity, and the blind business that communicates has words Sound business, Duan Xiao areas also greatly reduce.GSM/GPRS digital communication system also make it that communication quality is better than group system.GSM/ GPRS GSMs provide multiple business, the voice service opened and commonly used at present, data service etc..Voice service Need to set up connection by dialling with data service, charging is started once setting up after connection.At present, GSM short message services are not Need to set up dial-up connection, only the information to be sent out need to be sent to short message service center plus destination address, then by short message service center It is forwarded to final goal.Short message is limited within 160 bytes every time, and this is believed transmission GPS location information and other soil Enough, biggest advantage is that simple, the low-cost, wide coverage of connection and realized conveniently breath, but real-time effect It is poor.Data are transmitted using GPRS, real-time effect is good, wide coverage.

Claims (4)

1. a kind of Field Information Acquisition System based on GPS/GPRS/GSM integration modules, including A modules and B modules, A modules are Information acquisition module, B modules be information receiving module, A modules include power subsystem, power supply power saving unit, GPS OEM plates, Data acquisition unit, MCU control unit and GSM/GPRS units A；B modules include GSM/GPRS unit Bs and central station；It is special Levy and be：The signal output part of GPS OEM plates in the A modules passes through data acquisition unit and the signal of MCU control unit Input is connected, and the output end of power subsystem is connected by power supply power saving unit and the input of MCU control unit, MCU controls The signal output part of unit is connected with GSM/GPRS units A signal input part, and GSM/GPRS units A passes through in B modules GSM/GPRS unit Bs are communicated to connect with central station.

2. the Field Information Acquisition System as claimed in claim 1 based on GPS/GPRS/GSM integration modules, it is characterised in that： The master chip of the MCU control unit is W77E5E single-chip microcomputers.

3. the Field Information Acquisition System as claimed in claim 1 based on GPS/GPRS/GSM integration modules, it is characterised in that： GSM/GPRS units A and the GSM/GPRS unit B uses Siemens M20 single-frequency 900MHz gsm modules.

4. the Field Information Acquisition System as claimed in claim 1 based on GPS/GPRS/GSM integration modules, it is characterised in that： The GPS OEM plates are the Jupiter type GPS OEM plates of Rockwell companies.