CN1492696A - Radio communication device using GPRS module - Google Patents
Radio communication device using GPRS module Download PDFInfo
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- CN1492696A CN1492696A CNA031253091A CN03125309A CN1492696A CN 1492696 A CN1492696 A CN 1492696A CN A031253091 A CNA031253091 A CN A031253091A CN 03125309 A CN03125309 A CN 03125309A CN 1492696 A CN1492696 A CN 1492696A
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Abstract
This invention discloses a radio communication equipment using GPRS module including 1. GPRS communication module, 2. the transferred data directly input by users is analysed to be AT instruction software identified by input by GPRS communication module, 3. multiple serial communication interface expanded circuits communicated with the GPRS module and computer, 4. a control circuit for storing and calling for analyzing AT instructions and collecting data from the user test and control system communicated with the expanded circuits of multiple serial communication.
Description
Technical field
The invention belongs to wireless communication field, what be specifically related to is that to utilize GPRS be the equipment that the GPRS module is carried out radio communication.
Background technology
The GPRS i.e. English of " GPRS " (General Packet Radio Service) is called for short, and is a kind of new bearer service that development is come out on existing gsm system, and purpose is the data service that block form is provided for GSM user.GPRS adopts the wireless-modulated standard same with GSM, same frequency band, same burst structure, same frequency hopping rule and same tdma frame structure.This new Packet Data Channel is extremely similar to current Circuit-switched voice service channel, and therefore existing base station sub-system (BSS) can provide comprehensive GPRS to cover from the beginning.It is a kind of new packet data transmission technique of on existing GSM network, opening.
Because GPRS has outstanding radio communication function, each the numerous and confused mobile phone with GPRS function and GPRS module that directly applies to data communication released of big mobile product manufactory in the world is to adapt to the needs in market.The GPRS module has also obtained using widely under communication and computer professional's exploitation.It is the wireless communications products of the use of core that the specialized factory of more domestic communication products also releases with the GPRS module.At present these are that the subject matter that the product of core exists is that they all are for communication speciality personnel and computer professional's use with the GPRS module, because the GPRS module need be carried out relevant action under the control of the AT of special use instruction, these products make an exception not also needs the professional to instruct by establishment AT to control the action of GPRS module.And utilize GPRS to carry out the engineers and technicians of the other field of data communication for the overwhelming majority, the programmed method that also can not grasp the AT instruction at short notice is unfamiliar with in instruction to AT, if a good technology is merely able to develop by the professional, just limited the application of GPRS communication greatly.
Summary of the invention
The objective of the invention is to propose the equipment that a kind of GPRS of utilization module is carried out radio communication, utilize GPRS to finish the problem of the difficulty of RFDC to separate communication by no means and computer professional.
The present invention is such: it comprises (1) GPRS communication module;
The data of the demand transmission of (2) client directly being imported etc. are interpreted as the AT instruction software that the GPRS communication module can be discerned;
(3) with many serial communication interfaces expanded circuit of GPRS module, compunication;
(4) communicate by letter with many serial communication interfaces expanded circuit, be used to store and call with the control circuit AT instruction explained, collect data from user's TT﹠C system;
During communication: described software will directly import the communicating requirements such as data of demand transmission be interpreted as the AT instruction that the GPRS communication module can discern and download, control circuit will be downloaded the storage of AT instruction, and control circuit carries out Control work by many serial communication interfaces expanded circuit again.
Present device is by adding the embedded control system with a plurality of serial communication ports to the GPRS module, the GPRS radio data communication equipment of promptly forming similar and a Radio Station, the realization of GPRS module communication is oversimplified, taskization, the foolization, be anyly to attempt to use the GPRS module to carry out the personnel of data communication, as long as will link with computer with this attachment device of GPRS module interfaces, a shirtsleeve operation interface software that provides by this device, data format with the required transmission of user, data length, transmission meanss etc. are inserted in the corresponding form, can communication requirement be explained by the Automatic Program of inherence become the AT instruction and download in the control system of GPRS, native system and computer break away from then, serial port that it provided and the serial port of using TT﹠C system are linked the input that whole system just can be under the control of internal system controller be finished data automatically according to demand relevant action such as communicate by letter with application GPRS.The application of more present GPRS module must the user be familiar with and application AT instruction programming, and the present invention only needs the user to import the requirement of GPRS communication, do not need the user to be familiar with and grasp AT instruction, after computer is interpreted as the AT instruction with user's requirement, this instruction is downloaded on the controller in this equipment, and this equipment just can work alone by divorced from computer.More present most GPRS module can not divorced from computer work, range of application of the present invention is more extensive, can be in industry extensive uses such as industry, environmental protection, railway, municipal administration, meteorology, gas, running water, electric power, oil field, bank, geology, the conveyings of oil gas pipe.Equipment simple general-purpose, with low cost, user need not have any professional knowledge to use to GPRS communication; The equipment one-time investment is few, and use and maintenance cost is little, is convenient to install, uses the operation and maintenance management.
Description of drawings
Fig. 1 principle of the invention figure
Fig. 2 control circuit configuration diagram
Fig. 3 control circuit software flow pattern
Many serial communication interface circuits of Fig. 4 figure
Fig. 5 16C554 interface circuit figure
Fig. 6 explains AT instruction software flow chart
Embodiment
Embodiments of the invention are by providing one by GPRS module and the additional equipment that device for embedded control with a plurality of serial communication ports is formed, can be on CD with concrete this software of the software on the media that is stored in embodied on computer readable, this software is an executable file that is embedded on the WINDOWS platform.
As shown in Figure 1, device for embedded control 100 comprises embedded Control circuit 200, the many serial communication interfaces expanded circuit 300 that is connected with control circuit 200, the GPRS communication module 400 that is connected with many serial communication interfaces expanded circuit 300.Many serial communication interfaces expanded circuit 300 is connected with computer serial communication interface 500 during communication, and software 600 is embedded in the WINDOWS platform.
As shown in Figure 2, this circuit is the core component of whole GPRS data communications equipment, and it comprises central microprocessor CPU201, embedded data memory RAM 202, embedded program memory ROM 203, external program memory RAM204, external data memory E
2PROM205, running status display circuit 206, communication interface 207, central microprocessor CPU201 and embedded ROM203 deposit the relevant software program 209 of circuit in the circuit, and embedded data memory RAM 202 is parts of the normal operation of assurance program.Outside growth data memory RAM 204, main task is when internal data memory is not enough, deposits the data that obtain from custom system temporarily; Outside E
2Prom memory 205 is because the data of can power-failure protecting storing, therefore be mainly used in some instructions and some equipment operation indexs of the relevant devices operation that storage downloads from host computer, as the IP address of time interval of traffic rate, data format, data length, data acquisition and transmission, centring system management organization, recipient's phone number etc. when the One-to-one communication through explaining; Running status display circuit 206 mainly is to show this equipment running status with some simple modes such as LED, as data acquisition state, system communication state, system's normal operating condition, equipment failure state demonstration etc.; Other auxiliary circuits 208 comprise some indispensable auxiliary circuits of the normal operation of assurance equipment such as power supply power supply, system reset.Communication expansion control circuit is under the control of this circuit, a port of system is expanded to 4, to satisfy the needs of system.
As shown in Figure 3, embedded Control circuit software 209: communicate with host computer, and the user who is explained according to the software 600 of host computer downloads instruction to control circuit 200 to the requirement of data communication, E holds instruction
2In the PROM; Initialized system carries out instruction modification work according to the requirement of host computer, and the instruction that will revise deposits E again in
2In the PROM; Regularly establish a communications link as requested, comprise regularly and collect data from user's TT﹠C system, data are packed according to the mode of ICP/IP protocol, send by the GPRS module with the mode of serial communication with custom system; Accept the instruction that centring system is sent by the GPRS module, carry out corresponding Control work etc.
As shown in Figure 4, many serial communication interfaces expanded circuit 300 comprises RS232C communication interface 301 or Transistor-Transistor Logic level 232 communication interfaces 302 that are connected with the GPRS module, 4 road serial communication interface chips 303, the RS232C communication interface 304 that is connected with user's TT﹠C system or Transistor-Transistor Logic level 232 communication interfaces 305 or RS485 communication interface 306; 1 the tunnel is connected with GPRS module communication interface in 4 road serial communication interface chips 303, and 1 the tunnel is connected with user's TT﹠C system communication interface, and 1 the tunnel is connected with control circuit serial communication interface 207, and 1 the tunnel is connected with the RS232 serial communication interface 500 of computer.This interface circuit can both select one according to different GPRS modules; The mode that communicates to connect for custom system has three kinds, and the three selects one to get final product.
The concrete connection of 4 road serial communication interface chips 303 as shown in Figure 5, many serial communication interfaces expanded circuit 303 adopts 4 road serial communication interface expanded circuit 16C554 chips 303 to finish, many external famous big electric E-Device Inc. all produce this kind chip.The chip that this place adopts ST company to produce is finished.16C554 has perfect serial communication interface expanded function, it can with many popular microprocessor direct interfaces, multiple functional with other external apparatus interface.
Among Fig. 5,16C554 chip 303 has 4 extended serial mouths, wherein the A mouth is distributed to GPRS module 400, the communication interface of general GPRS module is 232 agreements 302 of Transistor-Transistor Logic level, can be directly and 16C554 chip 303 link, some module is level conversion if desired, and 16C554 chip 303 can pass through level shifter interface, links with module again.Two kinds of interfaces of this circuit all design on mainboard, for selecting for use; The C mouth is distributed to user's TT﹠C system, has two kinds of interfaces to select for use equally; The B mouth is distributed to host computer, because computer is all the RS232C level of standard, so this interface has adopted TTI/232 level shifting circuit 308; The D mouth is as redundant interface.
16C554 chip 303 is seen figure with the interface that central microprocessor CPU201 is connected, and wherein, the address/data lines P0.0-0.7 of data wire D0-D7 and CPU links, and uses as bidirectional data transfers; CSA-D is 4 communication port selection wires, and is by the I/O mouth control of CPU, effectively low.In this equipment, A mouth and B mouth Chang Xuan, the relevant instruction of A mouth in order in time to be sent by system running command center from GPRS module feedback even do not sending data by the GPRS module, can not be interrupted when module is idle and the getting in touch of CPU, and promptly CSA is often low; So same with getting in touch of host computer, being connected of host computer and equipment is at random, after equipment is by initialization, remove and leave no choice but revise user's requirement, the ordinary circumstance lower module can not link to each other with host computer again, but consider that this possibility exists, therefore equipment and host computer interface keep normal open, and promptly CSB is often low; Because custom system is initiatively visited as required the time at controller, thus equipment and user's being connected of TT﹠C system be by the main frame decision, but equipment always holds on a correspondence with user's TT﹠C system generally speaking, so the CSC signal also is low.
IOR and IOW are reading effectively of device and with imitating signal, directly link with RD and the WR signal of CPU, and the exchanges data between the device CPU is carried out in cooperation.
A0-A2 is the selection signal of device inside register, and its signal is that the P0.0-P0.2 of the address/data bus of CPU inserts 16C554 through the 8D latch.Register address with visit under the cooperation at ale signal when the preceding half cycle CPU of each instruction sends address signal is latched in the 8D latch, the second half P0.-0.7 of instruction cycle becomes data/address bus, and CPU software conducts interviews and exchanges data to the relevant register in inside that device has latched.
As shown in Figure 6, software 600 is executable files that are embedded on the WINDOWS platform, this program can be used VB, VC++, Dephi etc. are senior, and software is write, and this example adopts Deplli5.0 to write, and whole procedure is engraved on the CD and offers the user, after being installed on the user's computer, double-clicking this program icon when needing and to move.
Whole procedure is divided into the two large divisions, the user's request interpretive program of user interface framework program and low layer.Interface program is fairly simple, it mainly is the form that the user is listed as into the very easy understanding of user to the demand of GPRS module communication, allow the user fill in, speed, data length, the data format that the equipment that mainly contains is communicated by letter with custom system in the middle of this, be timed sending or instant transmission, the IP address that timing is set at interval, data are accepted system or accept number of module etc., and the operation indicating of program running etc.; The low layer working procedure mainly is the liaison of finishing with communication equipment, and whether complete sum is correct to judge the data that the user fills in, when the user fills in the wrong suitable prompting that provides on screen.The related data that the user's request program of low layer is filled in the user makes an explanation and compiles, medium as data such as traffic rate being embedded into AT instruction, the AT instruction that all communication equipments need be carried out work and control all is compiled as the ASCII character that can be carried out by communication equipment CPU; The ICP/IP protocol packing is carried out in some the network service parameters of simultaneously user being filled in such as the IP address of receiving terminal etc., also is compiled as the ASCII character that the communication equipment controller can be discerned, and downloads on the communication equipment by the serial communication port unification again.The controller of this equipment is kept at E with the director data stream of downloading
2In the PROM, the instruction according to this device controller CPU further compiles again, goes to carry out according to customer requirements the Control work of each side.
Claims (9)
1, a kind of GPRS of utilization module is carried out the equipment of radio communication, and it comprises the GPRS communication module, it is characterized in that it also comprises:
The data of the demand transmission of (1) client directly being imported etc. are interpreted as the AT instruction software that the GPRS communication module can be discerned;
(2) with many serial communication interfaces expanded circuit of GPRS module, compunication;
(3) communicate by letter with many serial communication interfaces expanded circuit, be used to store and call with the AT instruction explained, collect the control circuit of data from user's TT﹠C system;
Software described in the equipment will directly import the communicating requirements such as data of demand transmission be interpreted as the AT instruction that the GPRS communication module can discern and download, control circuit will be downloaded the storage of AT instruction, and control circuit carries out Control work by many serial communication interfaces expanded circuit again.
2, utilize the GPRS module to carry out the equipment of radio communication according to claim 1, it is characterized in that: the AT instruction software of described explanation comprises:
(1) initialization user interface is sent to the GPRS communication module and to be communicated to connect signal;
(2) the prompting user carries out the data input operation;
(3) send data;
(4) correctness, the integrality of identification input data;
(5) institute input data are made an explanation and compile, the AT compiling of instruction that all communications is not carried out fully work and control becomes the executable ASCII character of control circuit, with the network service parameter packing of input, also be compiled as the discernible ASCII character of control circuit and download simultaneously.
3, utilize the GPRS module to carry out the equipment of radio communication according to claim 1, it is characterized in that: described control circuit comprises: central processor CPU; Embedded program storage and data storage; Can carry out the outside extended menory of power-off protection; Display circuit.
4, utilize the GPRS module to carry out the equipment of radio communication as described in claim 3, it is characterized in that: described control circuit also comprises outside growth data memory.
5, utilize the GPRS module to carry out the equipment of radio communication as described in claim 2, it is characterized in that: described software is stored on the media of embodied on computer readable.
6, utilize the GPRS module to carry out the equipment of radio communication according to claim 1, it is characterized in that: described many serial communication interfaces expanded circuit comprises: RS232C communication interface that is connected with the GPRS module or Transistor-Transistor Logic level 232 communication interfaces, 4 road serial communication interface chips, the RS232C communication interface that is connected with user's TT﹠C system or Transistor-Transistor Logic level 232 communication interfaces or RS485 communication interface; 1 the tunnel is connected with GPRS module communication interface in 4 road serial communication interface chips, and 1 the tunnel is connected with user's TT﹠C system communication interface, and 1 the tunnel is connected with the control circuit serial communication interface, and 1 the tunnel is connected with the computer serial communication interface.
7, utilize the GPRS module to carry out the equipment of radio communication as described in claim 6, it is characterized in that: described 4 road serial communication interface chips are the 16C554 chip.
8, utilize the GPRS module to carry out the equipment of radio communication according to claim 1, it is characterized in that: described software is the executable file that is embedded on the WINDOWS platform.
9, utilize the GPRS module to carry out the equipment of radio communication as described in claim 3, it is characterized in that: the described outside extended menory that carries out power-off protection is outside E
2Prom memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031253091A CN1492696A (en) | 2003-08-22 | 2003-08-22 | Radio communication device using GPRS module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031253091A CN1492696A (en) | 2003-08-22 | 2003-08-22 | Radio communication device using GPRS module |
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| Publication Number | Publication Date |
|---|---|
| CN1492696A true CN1492696A (en) | 2004-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA031253091A Pending CN1492696A (en) | 2003-08-22 | 2003-08-22 | Radio communication device using GPRS module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104102612A (en) * | 2013-04-10 | 2014-10-15 | 四川鹏翔电子科技有限责任公司 | System based on short message service |
| CN105404164A (en) * | 2015-12-11 | 2016-03-16 | 山东通源电气有限公司 | Control system having GPRS data remote transmission and display functions and used for smart community |
-
2003
- 2003-08-22 CN CNA031253091A patent/CN1492696A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104102612A (en) * | 2013-04-10 | 2014-10-15 | 四川鹏翔电子科技有限责任公司 | System based on short message service |
| CN105404164A (en) * | 2015-12-11 | 2016-03-16 | 山东通源电气有限公司 | Control system having GPRS data remote transmission and display functions and used for smart community |
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