CN101540120B - Network-based system and network-based method for automatically diagnosing experimental wiring - Google Patents
Network-based system and network-based method for automatically diagnosing experimental wiring Download PDFInfo
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- CN101540120B CN101540120B CN 200710070350 CN200710070350A CN101540120B CN 101540120 B CN101540120 B CN 101540120B CN 200710070350 CN200710070350 CN 200710070350 CN 200710070350 A CN200710070350 A CN 200710070350A CN 101540120 B CN101540120 B CN 101540120B
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Abstract
The invention relates to a network-based system and a network-based method for automatically diagnosing experimental wiring. The system comprises a server program device, a plurality of sets of experimental equipment provided with experimental wiring automatic diagnosis testers, and a hardware device, wherein the hardware device comprises a server and corresponding network equipment; and the server program device provides a function of a drawing board for an experiment instructor to use to draw an experimental circuit schematic diagram, then automatically generates a network node table file according to the experimental circuit schematic diagram, transmits the network node table file to embedded-type computers arranged in the experimental wiring automatic diagnosis testers through an Ethernet, and receives and stores in database login commands and test result reports sent by the embedded-type computers arranged in the experimental wiring automatic diagnosis testers. The system and themethod can find wiring errors in experimental circuits quickly so as to help the experiment instructor to find the wiring errors students make in the experimental circuits quickly. The system and themethod are used for testing wiring errors in the experimental circuits in a laboratory.
Description
Technical field
The present invention relates to a kind of computer realm, be specifically related to a kind of automatically diagnosing experimental wiring system and method for based on network fast finding experimental circuit wiring error.
Background technology
Because in experimentation, mistake occurring can not be unavoidable, wherein experimental circuit wiring error is modal mistake, the tool statistics, and in education experiment, nearly fault more than 70% is caused by wiring error.Especially in forceful electric power experiment, if the student with power supply short circuit, that consequence is then hardly imaginable, for this loss that occurs very serious.
According to experiment regulation, general student must check the experiment instruction teacher confirm not have in the vicious situation that finishing experimental circuit particularly in the forceful electric power experiment after the wiring student could switch on and test.And expanded the enrollment owing to university in recent years, caused the anxiety of each school from experimental facilities to the various teaching resources of experiment qualified teachers, short during laboratory, cause the experiment instruction teacher not test the student to each and carry out aspectant guidance, will cause experiment effect to be had a greatly reduced quality.
Along with lab construction advances to networking and information-based direction, develop based on network automatically diagnosing experimental wiring system and have great significance.
Summary of the invention
In order to overcome defects, the object of the invention is to: a kind of make the energy automatic diagnosis of experimental circuit wiring error and prompting are provided, help the experiment instruction teacher to check, can reach Accident prevention hidden danger, the based on network based on network automatically diagnosing experimental wiring system and method that can fast finding experimental circuit wiring error that can time saving and energy savingly raise the efficiency again.
The present invention is in order to realize above-mentioned purpose, and the technical scheme that the present invention takes is:
A kind of based on network automatically diagnosing experimental wiring system comprises that server program device, some covers install experimental facilities, the hardware device of automatically diagnosing experimental wiring tester, and described hardware device comprises: a station server and corresponding network equipment; Described server program device: drawing board function is provided, the experiment instruction teacher can draw the experimental circuit schematic diagram with this function, then according to experimental circuit schematic diagram automatic generating network node table file, send the network node list file in the automatically diagnosing experimental wiring tester embedded computer by Ethernet, the embedded computer that receives in the automatically diagnosing experimental wiring tester sends login and test report result, and leaves in the database.
Above-mentioned based on network automatically diagnosing experimental wiring system, described automatically diagnosing experimental wiring tester comprises: shell, embedded computer, the Test Host that is connected by the usb communication line with embedded computer, be connected to digital quantity output circuit and the digital input circuit of Test Host output terminal, be connected to the test level commutation circuit that is used for switch test voltage of digital quantity output circuit output terminal, be connected to the buffer circuit of the break-make that is used for switch test device and experimental circuit of examination level switching circuit output terminal, the level comparison circuit and the analysis software that are connected to the digital input circuit input end form; Described embedded computer, the network node list file of the experimental circuit that generates by the ethernet interface reception server, automatically generate testing scheme according to the network node list file, send steering order by the usb communication line to Test Host, the detecting information of beaming back according to Test Host more automatically generates test report and issues server; Described Test Host and embedded computer carry out real-time Communication for Power by the usb communication line, the DA chip output test voltage that Test Host carries by single-chip microcomputer inside; Described digital quantity output circuit, digital input circuit have adopted the CPLD chip to expand the control pin; Described level comparison circuit is comprised of two voltage comparators, resistance, triode; On the described shell file is housed and receives pilot lamp, test finishes pilot lamp, relay indicating light, power knob, host-initiated button, test starting button.
The method of above-mentioned based on network automatically diagnosing experimental wiring the steps include:
After step 3. embedded computer 1 started testing system software, after the transmission of trend server logged in instruction, logs in successfully, relay indicating light 3 on the lamp device shell;
After step 4. server receives order, store in the database of server logging in record, and give embedded computer in the tester by network with the network node list file.
After embedded computer in step 5. tester received the network node list file, file received pilot lamp 1 on the lamp device shell;
After step 7. embedded computer receives the information that the test starting button presses, generate the test result report by test circuit, and the test result report is sent to server by Ethernet;
After step 8. server received the test result report, autostore was in the database of server;
The present invention has the following advantages:
Related automatically diagnosing experimental wiring tester passes through the break-make of its internal insulation circuit switch test device and experimental circuit among the present invention, proving installation and experimental circuit are isolated, guarantee not change original experimentation, on experiment effect without any impact; Analysis software generates testing scheme automatically according to the experimental wiring circuit diagram, can help the experiment instruction teacher to test any experimental circuit;
The present invention can test out the mistake of experimental circuit wiring timely and accurately, thereby avoids generation and the property loss of mishap, has guaranteed personal safety.
Description of drawings
Fig. 1 is the structural drawing of system of the present invention;
Fig. 2 is the inner structure block diagram of automatically diagnosing experimental wiring tester;
Fig. 3 is the software flow pattern of system of the present invention;
Fig. 4 is the shell mechanism synoptic diagram of automatically diagnosing experimental wiring tester;
Fig. 5 is that experimental circuit and experimental wiring self-diagnostic test instrument are simplified circuit;
Fig. 6 is the Test Host circuit of experimental wiring self-diagnostic test instrument, and node identical in the circuit diagram interconnects;
Fig. 7 is the digital quantity output circuit of experimental wiring self-diagnostic test instrument, and node identical in the circuit diagram interconnects;
Fig. 8 is the digital input circuit of experimental wiring self-diagnostic test instrument, and node identical in the circuit diagram interconnects;
Fig. 9 is the test level commutation circuit of experimental wiring self-diagnostic test instrument, and node identical in the circuit diagram interconnects;
Figure 10 is the level comparison circuit of experimental wiring self-diagnostic test instrument, and node identical in the circuit diagram interconnects;
Figure 11 is the buffer circuit of experimental wiring self-diagnostic test instrument, and node identical in the circuit diagram interconnects.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
A kind of based on network automatically diagnosing experimental wiring system comprises that server program device, some covers install the experimental facilities of automatically diagnosing experimental wiring tester, hardware device etc. as shown in Figure 1.Hardware device comprises: a station server and corresponding network equipment.
Among the present invention the structure of experimental wiring self-diagnostic test instrument as shown in Figure 2, this device comprises: shell and embedded computer 1, Test Host 2, digital quantity output circuit 3, digital input circuit 4, test level commutation circuit 5, level comparison circuit 6, buffer circuit 7.Its course of work is the break-make of buffer circuit switch test device and experimental circuit, the test level commutation circuit is sent test voltage into experimental circuit, then level comparison circuit test voltage and normal voltage that experimental circuit is returned compares, if it is high that test voltage is pressed than standard, level comparison circuit output low level then, if test voltage is forced down than standard electric, then level comparison circuit is exported high level; The Test Host circuit will receive instruction control switching buffer circuit and the test level commutation circuit that embedded computer sends, and read the level information of level comparison circuit output, and this information is issued embedded computer.
The shell mechanism of described experimental wiring self-diagnostic test instrument is equipped with file and accepts complete pilot lamp 8 as shown in Figure 4, and test finishes pilot lamp 9, relay indicating light 10, power knob 11, host-initiated button 5, test starting button 4;
Experimental wiring self-diagnostic test instrument by N1～N96 totally 96 lines be connected the break-make of buffer circuit 7 switch test devices and experimental circuit with the experiment table experimental circuit.
Embedded computer 1, the network node list file of the experimental circuit that generates by the ethernet interface reception server generates testing scheme automatically according to the network node list file, sends steering order by the usb communication line to Test Host 2.The detecting information of beaming back according to Test Host 2 more automatically generates test report and sends to server.
Test Host 2.Test Host adopts the C8051F020 single-chip microcomputer, and single-chip microcomputer carries out real-time Communication for Power by the chip U6 among Fig. 6 and embedded computer 1 by the usb communication line.According to the steering order that embedded computer 1 sends, single-chip microcomputer carries out exchanges data by data line and address wire and digital quantity output circuit 3, digital input circuit 4.DA chip and amplifier U2, U3 output test voltage that Test Host carries by single-chip microcomputer inside.
Digital quantity output circuit 3, digital input circuit 4.Because the control pin of single-chip microcomputer is inadequate, has adopted the CPLD chip to expand the control pin.
Test level commutation circuit 5, level comparison circuit 6.Realize the automatic diagnosis of experimental wiring mistake, the wiring information of how obtaining experimental circuit by switch test voltage is crucial.The below in university's electrical experiments the most common RLC series resonant circuit experiment as example, the course of work and the principle of illustrative experiment wiring automated diagnostic tester instrument.
Fig. 5 is the simplification that experimental circuit links to each other with experimental wiring self-diagnostic test instrument internal circuit, and the bipod of the L of experimental circuit, C, each components and parts of R links to each other with experimental wiring self-diagnostic test instrument test point N1, N2, N3, N4, N5, N6 respectively among the figure.The switch of the relay among the figure in J1, the J3 buffer circuit 7, J2, J4 are the switch of the relay in the test level commutation circuit 5, and other is the components and parts of level comparison circuit 6.Wherein+and 2.54V voltage is the test voltage of Test Host 2 outputs, and+2.53V voltage is the normal voltage of high-precision voltage stabilizing source output, and+5V voltage is the operating voltage of chip.Circuit identical among the figure represents with suspension points.Node OUT1, OUT2, OUT3～OUT96 are the output node of level comparison circuit 6.
1) the experiment instruction teacher utilizes drawing board on the server to draw the circuit theory diagrams of RLC series resonant circuit experiment, program on the server is according to experimental circuit schematic diagram automatic generating network node table file, and sends in the embedded computer of testing in the wiring self-diagnostic test instrument.
2) embedded computer generates testing scheme automatically according to the network node list file, sends steering order by the usb communication line to embedded computer.
3) after Test Host received steering order, the test voltage of output+2.54V was by the test point of buffer circuit 7 connection experimental circuit components and parts pins and experimental wiring self-diagnostic test instrument.
4) Test Host at first the node N1 in the test experiments circuit link to each other with those nodes.
5) Test Host by digital quantity output circuit 3 output high level the relay J 2 in the test level commutation circuit 5 is switched to+test voltage of 2.54V on, other relays remain unchanged.
6) 2 pin of two voltage comparator U1A connect+2.54V among Fig. 5,3 pin connect+2.53V, because the voltage of the voltage ratio inverting input of in-phase input end is low, the 1 pin output low level of two voltage comparator U1A, 5 pin of two voltage comparator U1B connect+2.54V, and 6 pin connect+2.53V, because the voltage of the voltage ratio inverting input of in-phase input end is high, the 7 pin output high level of two voltage comparator U1A, thereby turn-on transistor Q1, node OUT1 output low level.
7) the 2 pin ground connection of two voltage comparator U2A among Fig. 5,3 pin connect+2.53V, because the voltage of the voltage ratio inverting input of in-phase input end is high, the 1 pin output high level of two voltage comparator U1A, the 5 pin ground connection of two voltage comparator U1B, 6 pin connect+2.53V, because the voltage of the voltage ratio inverting input of in-phase input end is low, the 7 pin output low levels of two voltage comparator U1A, triode Q2 cut-off, node OUT2 exports high level.In like manner, if the experimental circuit wiring is correct, other nodes OUT3～OUT96 exports high level in the level comparison circuit 6.
8) Test Host 2 reads level comparison circuit 6 nodes OUT1～OUT96 level information by digital input circuit 4, and sends to embedded computer 1.
9) repeat the process of (5)-(8), when Test Host 2 can read in other nodes in the test experiments circuit, level comparison circuit 6 nodes OUT1～OUT96 level information.
10) level information that returns according to Test Host 2 of embedded computer 1, generate the network node list file of actual experiment circuit, the network node list file that generates with server compares, and just can draw which node short circuit, which node opens circuit, thereby generates the test result report.
Fig. 3 is the FB(flow block) of system software of the present invention.The flow process of a kind of based on network automatically diagnosing experimental wiring system software of the present invention is through as follows:
1.) program on the server is according to experimental circuit schematic diagram automatic generating network node table file;
2.) server sends the network node list file in the experimental wiring self-diagnostic test instrument embedded computer by Ethernet;
3.) program on the embedded computer generates testing scheme automatically according to the network node list file;
4.) embedded computer sends test instruction to Test Host according to testing scheme by the USB mouth;
5.) Test Host reads the wiring information of outside experimental circuit according to test instruction control test circuit;
6.) Test Host is crossed the USB oral instructions with the wiring information exchange of outside experimental circuit and is returned embedded computer;
7.) embedded computer is according to the wiring Information generation test result report of outside experimental circuit;
8.) embedded computer sends to server with the test result report by Ethernet.
The design of software is divided into embedded computer program and server program two parts.The software programming language of selecting is Visual C++6.0, and that server database is partly selected is SQL Server.Whole system is in the LAN environment in laboratory, the service condition of embedded computer is: install by Win98 operating system platform and ICP/IP protocol, the service condition of server is: operating system platform and ICP/IP protocol by Windows NTServer, SQL Server database are installed.
Server database has three tables, associates with common field UID between each table.The function of tables of database is as shown in the table.
| Table name | Implication | Function |
| Login | The user logs in | The information that recording user logs in is such as the IP address of computing machine, whether be in the Active state |
| Sch | Schematic library | The information of record experimental circuit schematic diagram. |
| Result | Results repository | Logging test results information |
Claims (6)
1. based on network automatically diagnosing experimental wiring system, comprise experimental facilities, the hardware device of server program device, some covers installation automatically diagnosing experimental wiring tester, it is characterized in that: described hardware device comprises: a station server and corresponding network equipment; Described server program device: drawing board function is provided, the experiment instruction teacher can draw the experimental circuit schematic diagram with this function, the server program device is according to experimental circuit schematic diagram automatic generating network node table file, and server sends the network node list file in the automatically diagnosing experimental wiring tester embedded computer by network; After embedded computer in the tester received the network node list file, file received pilot lamp on the lamp device shell, and the experiment student receives the prompting of pilot lamp according to file, presses test starting button on the crust of the device; After embedded computer receives the information that the test starting button presses, generate the test result report by test circuit, and the test result report is sent to server by Ethernet; Described automatically diagnosing experimental wiring tester comprises: shell, embedded computer, the Test Host that is connected by the usb communication line with embedded computer, be connected to digital quantity output circuit and the digital input circuit of Test Host output terminal, be connected to the test level commutation circuit that the digital quantity output circuit output terminal is used for switch test voltage, be connected to the buffer circuit that test level commutation circuit output terminal is used for the break-make of switch test device and experimental circuit, the level comparison circuit that is connected to the digital input circuit input end forms; Described embedded computer, the network node list file of the experimental circuit that generates by the ethernet interface reception server, automatically generate testing scheme according to the network node list file, send steering order by the usb communication line to Test Host, the detecting information of beaming back according to Test Host again generates the test report result and issues server; The break-make of buffer circuit switch test device and experimental circuit, the test level commutation circuit is sent test voltage into experimental circuit, then level comparison circuit test voltage and normal voltage that experimental circuit is returned compares, if test voltage is higher than normal voltage, level comparison circuit output low level then, if test voltage is forced down than standard electric, then level comparison circuit is exported high level; The Test Host circuit will receive instruction control switching buffer circuit and the test level commutation circuit that embedded computer sends, and read the level information of level comparison circuit output, and this information is issued embedded computer.
2. based on network automatically diagnosing experimental wiring according to claim 1 system, it is characterized in that: described Test Host and embedded computer carry out real-time Communication for Power by the usb communication line, the DA chip output test voltage that Test Host carries by single-chip microcomputer inside.
3. based on network automatically diagnosing experimental wiring according to claim 1 system is characterized in that: described digital quantity output circuit, digital input circuit, adopted the CPLD chip to expand the control pin.
4. based on network automatically diagnosing experimental wiring according to claim 1 system, it is characterized in that: described level comparison circuit is comprised of two voltage comparators, resistance, triode.
5. based on network automatically diagnosing experimental wiring according to claim 1 system, it is characterized in that: on the described shell file is housed and receives pilot lamp, test finishes pilot lamp, relay indicating light, power knob, host-initiated button, test starting button.
6. method that based on network automatically diagnosing experimental wiring according to claim 1 system diagnoses, it is characterized in that: described method step is:
Step 1. experiment instruction teacher draws the experimental circuit schematic diagram with the drawing board on the server, and is stored in the database, and the program on the server is according to experimental circuit schematic diagram automatic generating network node table file;
Step 2. experiment student starts the embedded computer in the automatically diagnosing experimental wiring tester;
After step 3. embedded computer starts testing system software, send the login instruction from the trend server, after logining successfully, relay indicating light on the lamp device shell (3);
After step 4. server receives order, login record is stored in the database of server, and give embedded computer in the tester by network with the network node list file;
After embedded computer in step 5. tester received the network node list file, file received pilot lamp (1) on the lamp device shell;
Step 6. experiment student receives the prompting of pilot lamp according to file, presses test starting button (4) on the crust of the device;
After step 7. embedded computer receives the information that the test starting button presses, generate the test result report by test circuit, and the test result report is sent to server by Ethernet;
After step 8. server received the test result report, autostore was in the database of server;
Step 9. experiment instruction teacher checks test result by server.
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| CN 200710070350 CN101540120B (en) | 2007-07-26 | 2007-07-26 | Network-based system and network-based method for automatically diagnosing experimental wiring |
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| CN101540120B true CN101540120B (en) | 2013-04-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103745633B (en) * | 2013-12-19 | 2015-12-30 | 武汉科贝科技有限公司 | Intelligent research laboratory comprehensive platform |
| CN104900135A (en) * | 2015-06-29 | 2015-09-09 | 安庆市达东电子科技有限公司 | Simulation practice apparatus of mechanical device |
| CN104933936B (en) * | 2015-07-01 | 2018-07-13 | 徐州市双惠医疗设备有限公司 | A kind of digital B ultrasound equipment for teaching |
| CN104992598A (en) * | 2015-07-21 | 2015-10-21 | 巢湖学院 | Single chip microcomputer experiment teaching board automatically guiding students to conduct wiring |
| CN105974263B (en) * | 2016-06-06 | 2019-07-30 | 珠海格力电器股份有限公司 | Motor wrong connection detection device and method |
| CN108647410A (en) * | 2018-04-25 | 2018-10-12 | 珠海格力电器股份有限公司 | Circuit diagram checking method and system |
| CN108766150B (en) * | 2018-06-04 | 2021-04-16 | 浙江大学 | Wiring fault diagnosis system and method for additionally arranging electromagnetic relay on wiring board |
| CN110264842B (en) * | 2019-06-28 | 2022-04-15 | 北京科技大学 | Teaching system and method for deepening understanding of measurement principle of test line |
| CN110969918B (en) * | 2019-11-29 | 2021-07-13 | 广西师范大学 | Method and system for reproducing wiring behavior process of student electrical experiment |
| CN115359704B (en) * | 2022-10-24 | 2023-01-17 | 南京邮电大学 | Computer principle test box for automatic wiring detection and simulation method |
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| CN87206369U (en) * | 1987-04-09 | 1988-04-06 | 屠锡瑜 | Portable and intelligent ic on-line or off-line tester |
| CN2831149Y (en) * | 2005-04-02 | 2006-10-25 | 李雄杰 | Fault auto analyzer for test circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87206369U (en) * | 1987-04-09 | 1988-04-06 | 屠锡瑜 | Portable and intelligent ic on-line or off-line tester |
| CN2831149Y (en) * | 2005-04-02 | 2006-10-25 | 李雄杰 | Fault auto analyzer for test circuit |
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