Summary of the invention
The invention provides a kind of Automated electronic teaching experiment system, be intended to solve in current domestic Electronics teaching experimental project a lot, different experiments project need be by different experimental instruments, the problem separate between experimental instruments, automaticity is low.
The object of the present invention is to provide a kind of Automated electronic teaching experiment system, described Automated electronic teaching experiment system comprises:
Standard test module, for carrying out different experimental projects, obtain carry out the measurement point signal of experimental project, and described measurement point signal is exported;
Control body module, be connected with described standard test module, for receiving the measurement point signal of described standard test module output, and described measurement point signal is processed and exported;
PC, be connected with described control body module, for receiving the measurement point signal of output after described control body module is processed, according to the menu of the experimental project that prestores and data, automatic-prompting experimental wiring and judge that whether wiring result is correct, and the electric current and voltage data of key testpoint show during to energising experiment, by comparing with the result that prestores, make the judgement of correctness, and automatically form laboratory report.
Further, described Automated electronic teaching experiment system also comprises: power module, printer;
Described power module is connected with described standard test module, control body module respectively, and described PC is connected with described printer;
220V/17V × 2 transformer that described power module is 30W by power, stabilivolt, the model that model is MC7812 are that 7912,7805 and 7905 integrated regulator connects and composes.
Further, described Automated electronic teaching experiment system comprises several standard test modules that can carry out different experiments project, described standard test module is connected with described control body module by measuring-signal output interface, and described measuring-signal output interface adopts PIN 26 pin biserial connectors.
Further, described control body module further comprises: photoelectricity isolated location, multi-way switch, analog-to-digital conversion module, single-chip microcomputer, communication module;
Described photoelectricity isolated location is connected with described multi-way switch, and described multi-way switch is connected with described analog-to-digital conversion module, and described analog-to-digital conversion module is connected with described single-chip microcomputer, and described single-chip microcomputer is connected with described communication module;
Described multi-way switch adopts eight path analoging switch that model is CD4051BCN, described analog-to-digital conversion module adopts the analog to digital converter that model is MAX197, described single-chip microcomputer adopts the microprocessor that model is AT89C51, and described communication module adopts the chip that model is TC232.
Further, described standard test module is switching on when experiment, and PC can show the voltage of key testpoint and current data, and compares with the result that prestores, and makes the judgement of correctness.
Further, in described PC, be preset with interface program, can automatically form laboratory report, and print by printer.
Further, described Automated electronic teaching experiment system is in the time of experimental project newly developed, as long as increase experimental project menu newly at PC, and set in advance the correlation parameter of experimental project, can on the item keevil in new standard test module, carry out new experimental project.
Automated electronic teaching experiment system provided by the invention, by standard test module, control body module taking single-chip microcomputer as core, PC three part compositions, different standard test modules adopts unified measuring-signal output interface to be connected with control body module, student inserts standard test module in the time of experiment, and on PC, recall corresponding project menu, student is according to wiring step wiring on experimental project plate of PC prompting, wiring state send PC to show after testing afterwards, can judge that whether wiring is correct, when energising experiment, can also automatically detect voltage and the current data of setting test point, compare with the data that prestore in PC, whether automatic decision experimental result is correct, experiment finishes rear system and can automatically form laboratory report, and print output by printer, between the interface of standard test module and control body module, there is photoelectricity isolated location, effectively protect the safety of controlling body module and PC, for experimental project newly developed, teacher as long as input in advance default experimental project program and data in PC, can develop the experimental project making new advances, this system is flexible, measurement range is wide, detect accurately, automaticity is high, improve experimental teaching efficiency, there is stronger popularization and using value.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is described in further detail.Should be appreciated that specific embodiment described herein is only in order to explain the present invention, and be not used in restriction invention.
Fig. 1 shows the structure of the Automated electronic teaching experiment system that the embodiment of the present invention provides.For convenience of explanation, only show part related to the present invention.
This Automated electronic teaching experiment system comprises:
Standard test module 11, for carrying out different experimental projects, obtain carry out the measurement point signal of experimental project, and measurement point signal is exported;
Control body module 12, be connected with standard test module 11, the measurement point signal of exporting for receiving standard test module 11, and measurement point signal is processed and exported;
PC 13, be connected with control body module 12, for receiving the measurement point signal of exporting after body module 12 is processed through controlling, according to the menu of the experimental project that prestores and data, automatic-prompting experimental wiring and judge that whether wiring result is correct, and the electric current and voltage data of key testpoint show during to energising experiment, by comparing with the result that prestores, make the judgement of correctness, and automatically form laboratory report.
Further, this Automated electronic teaching experiment system also comprises: power module 14, printer 15;
Power module 14 is connected with standard test module 11, control body module 12 respectively, and printer 15 is connected with PC 13;
220V/17V × 2 transformer that power module 14 is 30W by power, stabilivolt, the model that model is MC7812 are that 7912,7805 and 7905 integrated regulator connects and composes.
As shown in Figure 2, further, this Automated electronic teaching experiment system comprises several standard test modules 11 that can carry out different experiments project, standard test module 11 is connected with control body module 12 by measuring-signal output interface 17, and measuring-signal output interface 17 adopts PIN 26 pin biserial connectors.
Further, controlling body module 12 further comprises: photoelectricity isolated location 121, multi-way switch 122, analog-to-digital conversion module 123, single-chip microcomputer 124, communication module 125;
Photoelectricity isolated location 121 is connected with multi-way switch 122, and multi-way switch 122 is connected with analog-to-digital conversion module 123, and analog-to-digital conversion module 123 is connected with single-chip microcomputer 124, and single-chip microcomputer 124 is connected with communication module 125;
As shown in Fig. 3, Fig. 4 and Fig. 5, multi-way switch 122 adopts eight path analoging switch that three models are CD4051BCN;
As shown in Figure 6, to adopt model be the analog to digital converter of MAX197 to analog-to-digital conversion module 123;
As shown in Figure 7, to adopt model be the microprocessor of AT89C51 to single-chip microcomputer 124;
As shown in Figure 8, to adopt model be the chip of TC232 to communication module 125.
Further, standard test module 11 is switching on when experiment, and PC 13 can show the voltage of key testpoint and current data, and compares with the result that prestores, and makes the judgement of correctness.
Further, in PC 13, be preset with interface program, can automatically form laboratory report, and print by printer 15.
Further, this Automated electronic teaching experiment system is in the time of experimental project newly developed, as long as increase experimental project menu newly at PC 13, and set in advance the correlation parameter of experimental project, can on the item keevil in new standard test module 11, carry out new experimental project.
Below in conjunction with drawings and the specific embodiments, application principle of the present invention is further described.
This Automated electronic teaching experiment system comprises: standard test module 11, control body module 12 and PC 13, standard test module 11 is connected with control body module 12 by unified measuring-signal output interface 17, control in body module 12 and be provided with photoelectricity isolated location 121, multi-way switch 122, analog-to-digital conversion module 123, communication module 125, single-chip microcomputer 124, multi-way switch 122 is controlled by single-chip microcomputer 124, and receive the signal to be measured that standard test module 11 is inputted, the output terminal of the input termination multi-way switch 122 of analog-to-digital conversion module 123, the output terminal access single-chip microcomputer 124 of analog-to-digital conversion module 123, single-chip microcomputer 124 is exported serial ports and is connected with PC 13 through communication module 125, PC 13 shows data processed result, power module 14 is responsible for producing the required various DC voltage of whole system, pay standard experiment module 11, control body module 12, whole system is normally worked.
The object that multi-way switch 122 designs is to realize the measurement of more check point signals, owing to having adopted three eight path analoging switch, it can be divided into one group of three signal signal to be measured, to realize the inspection of standard test module 11 circuit that student builds, analog-to-digital conversion module 123 receives the signal of multi-way switch 122, digital signal after conversion is sent into single-chip microcomputer 124, it is the chief component of the normal work of system, single-chip microcomputer 124 is uploaded to PC 13 testing result, and is further processed in PC 13.
When student experimenting, first on PC 13, recall corresponding experimental project menu, PC 13 step by step automatic-prompting student carries out wiring, has connect after line in every step, whether correctly can automatically detect wiring; Wiring completes while switching on experiment, automatically the voltage of key testpoint and the numerical value of electric current on examination criteria experiment module 11, and can on PC 13, show, and with PC 13 experimental project programs in default correct data compare, whether correctly make experimenter promptly and accurately understand result, improved conventional efficient; When experimental project newly developed, as long as increase experimental project menu newly in PC 13 softwares, and set in advance experiment parameter, can on the experimental project plate of new standard test module 11, carry out new projects' experiment, develop new experimental project convenient; Design interface program on PC 13, can form laboratory report automatically, and can print by printer 15.
The Automated electronic teaching experiment system that the embodiment of the present invention provides, by standard test module 11, control body module 12 taking single-chip microcomputer 124 as core, PC 13 3 part compositions, different standard test modules 11 adopts unified measuring-signal output interface 17 to be connected with control body module 12, student inserts standard test module 11 in the time of experiment, and on PC 13, recall corresponding project menu, wiring step wiring on experimental project plate that student points out according to PC 13, wiring state send PC 13 to show after testing afterwards, can judge that whether wiring is correct, when energising experiment, can also automatically detect voltage and the current data of setting test point, compare with the data that prestore in PC 13, whether automatic decision experimental result is correct, after finishing, experiment can automatically form laboratory report, and print output by printer 15, between the interface of standard test module 11 and control body module 12, there is photoelectricity isolated location 121, effectively protect the safety of controlling body module 12 and PC 13, for experimental project newly developed, teacher as long as input in advance default experimental project program and data in PC 13, can develop the experimental project making new advances, this system is flexible, measurement range is wide, detect accurately, automaticity is high, improve experimental teaching efficiency, there is stronger popularization and using value.
These are only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.