CN204406755U - A kind of wireless communication system experimental box - Google Patents

Abstract

The utility model provides a kind of wireless communication system experimental box, comprises casing and base plate.Described experimental box comprises and is arranged on master chip on base plate and from chip; Described master chip is connected with the first wireless data transfer module by SIO interface; Described master chip is connected with a GPRS module with a 3G module respectively by serial port; Described GPRS module is integrated with SIM card interface and audio interface; Describedly connect the second wireless data transfer module from chip by SIO interface; Described experimental box also comprises sensor assembly.The clear in structure of this wireless communication system experimental box is simple, can complete the related experiment of 70 remainder wireless communication systems, diverse in function, use flexibly, meet the demand of carrying out wireless communication system synthetic instruction.

Description

A kind of wireless communication system experimental box

Technical field

The utility model relates to experimental provision equipment technical field, particularly relates to a kind of wireless communication system experimental box.

Background technology

Along with the development of technology, the acquisition of information and transmission progressively from wired be transitioned into wireless.This technology of Wireless Data Transmission is also applied to the every aspect in life.For technology of Internet of things field, the application relating to the product of Wireless Data Transmission is ubiquitous, such as radio meter register, Digital Image Transmission, community call, industrial data collection, non-contact RF smart card, fire safety system, regional alarm system etc.

Many colleges and universities all set up with technology of Internet of things is in recent years the specialty of core, and wireless communication system and data transmission nature become one of key content of teaching of giving lessons.Exploitation wireless communication system is the professional technique that a theory and practice associativity is very strong, if do not have comprehensive Systems Theory and corresponding product design method, student is difficult to the understanding forming visual system.But in the classroom of current wireless communication system, the experimental facilities used is all often the experimental box that comprehensive experiment box or carry out on the basis of other experimental box is transformed, be unfavorable for that student does it yourself exploitation.This type of experimental box is not pointed, and is not suitable for the experimental teaching of wireless communication system.

So, there is experimental box function singleness in the teaching of current wireless communication system and the shortcoming of not easily development and maintenance.

Summary of the invention

The utility model provides a kind of wireless communication system chamber, is intended to solve in the teaching of current wireless communication system lack contain various wireless communication system and the problem of representative experimental box.

The technical scheme that the utility model provides is a kind of wireless communication system experimental box, and described experimental box comprises and is arranged on master chip on base plate and from chip; Described master chip is connected with the first wireless data transfer module; Described master chip is also connected with a GPRS module with a 3G module respectively by serial port; Described GPRS module is integrated with SIM card interface and audio interface; Describedly connect the second wireless data transfer module from chip; Described experimental box also comprises sensor assembly.

Conveniently student's design debug, described master chip adopts the processor based on embedded system, and described master chip is also connected with display module, pilot lamp and keyboard.

Further, described master chip is connected with FLASH and SDRAM external memory storage; Described master chip is also integrated with synchronous/asynchronous transceiver, spi bus interface, I ²c bus interface, USB interface, synchronous serial controller, PWM controller, analog to digital converter, peripheral data controller, multiplexed I/O interface and timer/counter.

As a part for wireless communication system transceiver module, described from chip be processor based on embedded system.

Further, described first wireless data transfer module and the second wireless data transfer module are rf chip.

Further, described GPRS module comprises radio frequency connector and double frequency end antenna, described GPRS module is integrated with audio interface and SIM interface, described GPRS module connects audio-frequency module by described audio interface, and described GPRS module connects SIM card by SIM interface.

Further, described audio-frequency module comprises microphone, earphone and hummer; Described SIM card is the SIM card of 1.8V or the SIM card of 3.0V.

For further expanding the applicable data acquisition range of experimental box, described sensor assembly comprises temperature sensor, infrared sensor, light sensor, tongue tube electromagnetic switch, smoke transducer, heat release infrared sensor and Hall element.

Further, described 3G module comprises video-audio decoder, and described 3G module is connected with camera.

For convenience of networking, described base plate is divided into two-layer, wherein, and described master chip and being arranged on the different layers of described base plate from chip.

Wireless communication system experimental box provided by the utility model, by arranging the master chip that realizes data transmission/reception and from chip of cooperatively interacting, and the GPRS module of peripheral expansion, 3G module, allow student to design various wireless communication experiment, realize data and transmitted by different wireless communication system.The clear in structure of this wireless communication system experimental box is simple, can complete the related experiment of 70 remainder wireless communication systems, diverse in function, use flexibly, meet the demand of carrying out wireless communication system synthetic instruction.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the structural representation of wireless communication system experimental box provided by the utility model.

Embodiment

For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.

Simplified summary, the main mode of wireless data communications is point-to-point communication and point-to-multipoint delivery.Wherein point-to-point communication is the widest one of application.Specifically, be place a transceiver terminal respectively at 2 that need to carry out data transmission.Two transceiver terminals can be arranged to one for single-shot, and another is single receipts; Also can be set to transmitted in both directions, thus test the transmission of remote data or controlled in wireless.This data communication mode is applicable to data transmission one to one or controls, and simply effectively, is also the basis of other wireless communication systems of composition.

The communication mode of point-to-multipoint mainly uses when networking.Be generally the centralized control of some transmission, multipoint reception, or any receives the multipoint acquisition mode of multiple spot transmission, or the decentralized control that any is received and dispatched, multiple spot is received and dispatched.

Namely the original intention of contrived experiment case is provide corresponding hardware platform to student, encourages student to use one's hands and brains, and understands above-mentioned two kinds of basic communications by experiment.

As shown in Figure 1, the experimental box that the present embodiment proposes comprises and is arranged on master chip on base plate and from chip; Described master chip connects the first wireless data transfer module by SIO interface, describedly connects the second wireless data transfer module from chip by SIO interface.Described first wireless data module and the second wireless data module are rf chip, all can pass through with nRF series as the rf chip of core realizes.Described master chip and be the processor based on embedded system from chip, as ARM7 or ARM9 core.In experiment, need the data transmitted to be sent on radio frequency chip after master chip process, radio frequency chip is sent on wireless channel after modulating data on some suitable frequencies.Receive corresponding data from chip by antenna, thus obtain baseband signal, and then be sent to enter heart data processing from chip.Thus form point to point wireless communication system model.

The communication mode of point-to-multipoint embodies mainly through data acquisition, and back end selects multiple sensors.Sensor assembly as shown in Figure 1 comprises temperature sensor, infrared sensor, light sensor, tongue tube electromagnetic switch, smoke transducer, heat release infrared sensor and Hall element.The functional module of independent wireless senser encapsulates separately, forms sensor network nodes.The digital signal of each sensor collecting device is transferred to from chip by sensor network.Namely realize the collection of teledata from chip, and be sent to master chip by the second wireless data transfer module and carry out data processing.Namely the multi-point data acquisition mode that multiple spot sends, a bit receives can be realized.

For the processor that ARM7 framework is core, the master chip that the present embodiment provides also is integrated with synchronous asynchronous transceiver, spi bus interface, I simultaneously ₂c bus interface, USB interface, synchronous serial controller, PWM controller, analog to digital converter, peripheral data controller, multiplexed I/O interface and timer/counter etc.There is outside extended memory FLASH and SDRAM of sheet choosing simultaneously.Wherein, all multiplexed I/O interfaces are all drawn, and student can develop and utilize by experimental actual needs, and design is carried out other relevant with networking with the embedded internet framework and tested.

GPRS radio communication service is an important component part in radio communication theory teaching, so experimental box must have relevant function and carry out the series of experiments relevant to GPRS radio communication service.In order to reach this purpose, as shown in Figure 1, master chip is also connected with a GPRS module.Described GPRS module is SIMCOM300 chip.SIMCOM300 chip is integrated with double frequency end antenna, host interface, radio frequency connector, audio interface and SIM card interface.Wherein said radio frequency connector supports GSM900/DCS1800 double frequency.Described GPRS module connects audio-frequency module by audio interface, and described audio-frequency module comprises microphone, earphone and hummer.Described GPRS module supports outside SIM card, can by SIM card interface directly with 3.0VSIM card or 1.8VSIM card to being connected.GPRS module is connected with the RS-232 serial line interface of master chip by standard.By above-mentioned setting, student can use experimental box to carry out if SIM is as education activities such as Call-Control1 experiment, short message receiving-transmitting experiment, data transmission experiment and transparent transmission experiments.

Equally as important component part in wireless communication system teaching, in experiment, also the related experiment supporting with 3G communication theory must be designed with.As shown in Figure 1, master chip also connects a 3G module by serial port.Described 3G module comprises video-audio decoder.Described 3G module is connected with camera.Described 3G module can be realized by 3G chipset.Described 3G chipset at least comprises a GSM/GPRS baseband chip, TD-SCDMA baseband chip, a TD-SCDMA radio frequency chip and a GSM/GPRS radio frequency chip.3G module also can adopt the multi-mode communication chip of high integration to realize.By above-mentioned setting, student can use experimental box carry out as online timing candid photograph and trigger the experiments such as video recording online.

See Fig. 1, master chip is also connected with keyboard with display module, pilot lamp.Described display module can be one or more in LCD liquid crystal display screen, charactron, TFT display screen.Described display module receives the output signal of described master chip and shows the information such as experimental data and chart.

The base plate of the experimental box that the present embodiment provides is divided into two-layer, wherein said master chip and being separately positioned on the different layers of base plate from chip.Be provided with to take out from experimental box from one deck base plate of chip and work alone, for the principle of work of the wireless communication system in an experiment between artificial hand's holding equipment and main frame.

The wireless communication system experimental box that the present embodiment provides, by arranging the master chip that realizes data transmission/reception and from chip of cooperatively interacting, and the GPRS module of peripheral expansion, 3G module, allow student to design various wireless communication experiment, realize data and transmitted by different wireless communication system.This wireless communication system experimental box can complete the related experiment of 70 remainder wireless communication systems, diverse in function.Student, by doing it yourself, is appreciated that the theory and technology grasping multiple fields such as sensor, infrared acquisition, Video processing, 3G data communication and embedded system, nearly cover whole fields of wireless communication system teaching.The experimental box clear in structure that the present embodiment provides, adopts modular design, is convenient to later maintenance upgrading; Cost is low and applied widely.

Last it is noted that above embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of the utility model.

Claims (10)

1. a wireless communication system experimental box, comprises casing and base plate, it is characterized in that:

Described experimental box comprises and is arranged on master chip on base plate and from chip; Described master chip connects the first wireless data transfer module; Described master chip is also connected with a GPRS module with a 3G module respectively by serial port; Described GPRS module is integrated with SIM card interface and audio interface; Describedly connect the second wireless data transfer module from chip; Described experimental box also comprises sensor assembly.

2. wireless communication system experimental box according to claim 1, is characterized in that, described master chip is the processor based on embedded system, described master chip is connected with display module, pilot lamp and keyboard.

3. wireless communication system experimental box according to claim 2, is characterized in that, described master chip is connected with FLASH and SDRAM external memory storage; Described master chip is also integrated with synchronous/asynchronous transceiver, spi bus interface, I ²c bus interface, USB interface, synchronous serial controller, PWM controller, analog to digital converter, peripheral data controller, multiplexed I/O interface and timer/counter.

4. wireless communication system experimental box according to claim 1, is characterized in that, described from chip be processor based on embedded system.

5. wireless communication system experimental box according to claim 1, is characterized in that, described first wireless data transfer module and the second wireless data transfer module are rf chip.

6. wireless communication system experimental box according to claim 1, it is characterized in that, described GPRS module comprises radio frequency connector and double frequency end antenna, described GPRS module is integrated with audio interface and SIM interface, described GPRS module connects audio-frequency module by described audio interface, and described GPRS module connects SIM card by SIM interface.

7. wireless communication system experimental box according to claim 6, is characterized in that, described audio-frequency module comprises microphone, earphone and hummer; Described SIM card is the SIM card of 1.8V or the SIM card of 3.0V.

8. wireless communication system experimental box according to claim 1, it is characterized in that, described sensor assembly comprises temperature sensor, infrared sensor, light sensor, tongue tube electromagnetic switch, smoke transducer, heat releases infrared sensor and Hall element.

9. wireless communication system experimental box according to claim 1, is characterized in that, described 3G module comprises video-audio decoder, and described 3G module is connected with camera.

10. the wireless communication system experimental box according to any one of claim 1-9, is characterized in that, described base plate is divided into two-layer, wherein, and described master chip and being arranged on the different layers of described base plate from chip.