CN202119468U - Portable on-line test and fault diagnosis system - Google Patents
Portable on-line test and fault diagnosis system Download PDFInfo
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- CN202119468U CN202119468U CN2011202335853U CN201120233585U CN202119468U CN 202119468 U CN202119468 U CN 202119468U CN 2011202335853 U CN2011202335853 U CN 2011202335853U CN 201120233585 U CN201120233585 U CN 201120233585U CN 202119468 U CN202119468 U CN 202119468U
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Abstract
The utility model discloses a portable on-line test and fault diagnosis system, comprising a signal conditioning circuit, a digital signal acquisition circuit, an analog signal acquisition circuit, a computer system and an LCD, wherein the signal conditioning circuit comprises an analog switch selection array, an analog signal conversion circuit and a digital signal conversion circuit, an input end of the analog switch selection array is connected with a detected object, an output end of the analog switch selection array is respectively connected with an input end of the digital signal conversion circuit and an input end of the analog signal conversion circuit, an output end of the digital signal conversion circuit and an output end of the analog signal conversion circuit are respectively connected with an input end of the digital signal acquisition circuit and an input end of the analog signal acquisition circuit, an output end of the digital signal acquisition circuit and an output end of the analog signal conversion circuit are respectively connected with an input end of the computer system, and an output end of the computer system is connected with the LCD. The system can carry out accurate on-line tests on detected objects, and at the same time, can realize real-time fault diagnosis of the detected objects.
Description
Technical field
The utility model relates to a kind of portable on-line testing and fault diagnosis system, is applicable to dynamo-electric field of measuring technique.
Background technology
Along with improving constantly of modern electromechanical equipment automaticity, the inner various signals of electromechanical equipment are complicated, for reliability and the maintainability that improves electromechanical equipment, need carry out a large amount of test and diagnostic work usually.On-line testing technology is the important support technology that guarantees the electromechanical equipment operate as normal, and the on-line testing ability directly has influence on the quality of equipment complete machine, and its trouble diagnosibility directly has influence on the overall target of complete machine.Therefore, electromechanical equipment is carried out the key areas that on-line testing and fault diagnosis have become modern Testing Technology Study.At present, most Online Transaction Processing all is that function is single relatively, is main with on-line monitoring, and the Auto-Test System that possesses the fault quick identification is also rare.
For Online Transaction Processing; The domestic testing apparatus that has two types at present; One type is the special test equipment to a certain type of concrete measurand, and main hardware cooperates other peripheral components to constitute by 51 series monolithics, through some signal acquisition circuits; Completion is to the signal monitoring of measurand, and inefficiency, accuracy are not high; Another kind of is to adopt standard instrument, like the virtual instrument based on EBIs such as VXI, PXI, sets up the test macro based on the STD bus instrument; But this type systematic not only instrument costs an arm and a leg, and because reference instrument is main with common use, can not be optimized configuration; Serious waste of resources simultaneously, often need be added a large amount of matrix switch modules or signal converting module; Cause system cost too high, bulky, make troubles to use.
The utility model content
The utility model technical matters to be solved provides a kind of portable on-line testing and fault diagnosis system.
For solving the problems of the technologies described above; The technical scheme that the utility model adopts is: comprise signal conditioning circuit, digital signal acquiring circuit, collection of simulant signal circuit, the department of computer science LCD display of unifying, said signal conditioning circuit selects array, analog signal conversion and digital signal change-over circuit to form by analog switch; The input end of said analog switch selection array is connected with measurand, its output terminal is connected with the input end of digital signal change-over circuit and analog signal conversion respectively; The output terminal of digital signal change-over circuit and analog signal conversion is connected with the input end of digital signal acquiring circuit with the collection of simulant signal circuit respectively; The output terminal of digital signal acquiring circuit and collection of simulant signal circuit is connected with the input end of computer system respectively, and the output terminal of computer system is connected with LCD display.
Said analog switch selects array to adopt Agilent U2751A USB modular switch matrix.
Said digital signal change-over circuit is made up of four tunnel identical input circuit, four tunnel identical output circuit, comparer U1 and peripheral cell diode D1 thereof and resistance R 17; Said first input circuit is made up of resistance R 1 and resistance R 2, and said first output circuit is made up of photoelectrical coupler U2, resistance R 3 and resistance R 4; Termination analog switch after said resistance R 1 is connected with resistance R 2 is selected output terminal, its other end ground connection of array, and resistance R 1 is connected with input end 5 pin of comparer U1 with the node of R2; The negative electrode of the diode of said photoelectrical coupler U2 is connected with output terminal 2 pin of comparer U1; Its anode meets VCC through resistance R 3; The base stage of the triode of said photoelectrical coupler U2 meets VCC through resistance R 4, and its collector connects the input end of said digital signal acquiring circuit, its grounded emitter; Power end 3 pin of said comparer U1 meet VCC, are connected with VCC through resistance R 17 after its 4 pin, 6 pin, 8 pin and the 10 pin parallel connections, and the negative pole of said diode D1 connects 4 pin, its plus earth of said comparer U1.
Said analog signal conversion is made up of isolated amplifier U6, power module U7 and capacitor C 1-C7; The said analog switch of the input termination of said isolated amplifier U6 is selected the output terminal of array, the input end of the said collection of simulant signal circuit of its output termination; The input termination direct current 15V power supply of said power module U7, its output terminal meets power end VDD1, GND1 and the VSS1 of said isolated amplifier U6 respectively; Said capacitor C 1-C7 is a filter capacitor.
Said digital signal acquiring circuit is made up of CDT800 digital quantity I/O expansion module and SCM/LX-3160 module.
Said collection of simulant signal circuit is made up of SEM/ADT-620 module and SCM/LX-3160 module.
The model of above-mentioned comparer U1 is LM139, and the model of photoelectrical coupler U2 is 6N137; The model of above-mentioned isolated amplifier U6 is ISO124P, and the model of power module U7 is DCP011515DB.
The utility model can be realized the on-line testing of following parameters and fault diagnosis: (1) can isolate, gather the analog quantity below the 100M; (2) can isolate, gather the following switching signal of 100M; (3) can be to from various kinds of sensors>weak signal of 5mV isolates, gathers; (4) can judge the duty of measurand, fault is positioned.
Adopt the beneficial effect that technique scheme produced to be: through analog signal conversion to simulating signal isolate, processing and amplifying delivers to the collection of simulant signal circuit; And through the digital signal change-over circuit to digital signal isolate, level match handles and to deliver to digital signal acquiring circuit; And then deliver to computer system; Computer system is carried out analyzing and processing through detecting software to input signal, and signal condition is shown on the LCD display.The utility model can be realized all kinds of measurands are carried out online accurate test, can also realize the real time fail diagnosis to measurand simultaneously.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.
Fig. 1 is the schematic block circuit diagram of the utility model;
Fig. 2 is the utility model digital signal change-over circuit synoptic diagram;
Fig. 3 is the utility model analog signal conversion synoptic diagram.
Embodiment
As shown in Figure 1; Described a kind of portable on-line testing of the utility model and fault diagnosis system; Comprise signal conditioning circuit, digital signal acquiring circuit, collection of simulant signal circuit, the department of computer science LCD display of unifying, said signal conditioning circuit selects array, analog signal conversion and digital signal change-over circuit to form by analog switch; The input end of said analog switch selection array is connected with measurand, its output terminal is connected with the input end of digital signal change-over circuit and analog signal conversion respectively; The output terminal of digital signal change-over circuit and analog signal conversion is connected with the input end of digital signal acquiring circuit with the collection of simulant signal circuit respectively; The output terminal of digital signal acquiring circuit and collection of simulant signal circuit is connected with the input end of computer system respectively, and the output terminal of computer system is connected with LCD display.
Said analog switch selects array to adopt Agilent U2751A USB modular switch matrix.
As shown in Figure 2; Said digital signal change-over circuit is made up of four tunnel identical input circuit, four tunnel identical output circuit, comparer U1 and peripheral cell diode D1 thereof and resistance R 17; Said first input circuit is made up of resistance R 1 and resistance R 2, and said first output circuit is made up of photoelectrical coupler U2, resistance R 3 and resistance R 4; Termination analog switch after said resistance R 1 is connected with resistance R 2 is selected output terminal, its other end ground connection of array, and resistance R 1 is connected with input end 5 pin of comparer U1 with the node of R2; The negative electrode of the diode of said photoelectrical coupler U2 is connected with output terminal 2 pin of comparer U1; Its anode meets VCC through resistance R 3; The base stage of the triode of said photoelectrical coupler U2 meets VCC through resistance R 4, and its collector connects the input end of said digital signal acquiring circuit, its grounded emitter; Power end 3 pin of said comparer U1 meet VCC, are connected with VCC through resistance R 17 after its 4 pin, 6 pin, 8 pin and the 10 pin parallel connections, and the negative pole of said diode D1 connects 4 pin, its plus earth of said comparer U1.
As shown in Figure 3, said analog signal conversion is made up of isolated amplifier U6, power module U7 and capacitor C 1-C7; The said analog switch of the input termination of said isolated amplifier U6 is selected the output terminal of array, the input end of the said collection of simulant signal circuit of its output termination; The input termination direct current 15V power supply of said power module U7, its output terminal meets power end VDD1, GND1 and the VSS1 of said isolated amplifier U6 respectively; Said capacitor C 1-C7 is a filter capacitor.
Said digital signal acquiring circuit is made up of CDT800 digital quantity I/O expansion module and SCM/LX-3160 module.
Said collection of simulant signal circuit is made up of SEM/ADT-620 module and SCM/LX-3160 module.
The model of above-mentioned comparer U1 is LM139, and the model of photoelectrical coupler U2 is 6N137; The model of above-mentioned isolated amplifier U6 is ISO124P, and the model of power module U7 is DCP011515DB.
In sum, the utility model receives signal through interface circuit, and to simulating signal isolate, processing and amplifying, to digital signal isolate, level match handles, and delivers to computer system; Computer system is through digital interface and analog interface acquired signal, and through the analyzing and processing of detection software, and the state of signal is shown on the LCD display.The utility model can be realized all kinds of measurands are carried out online accurate test, can also realize the real time fail diagnosis to measurand simultaneously.
Claims (6)
1. portable on-line testing and fault diagnosis system; It is characterized in that: comprise signal conditioning circuit, digital signal acquiring circuit, collection of simulant signal circuit, the department of computer science LCD display of unifying, said signal conditioning circuit selects array, analog signal conversion and digital signal change-over circuit to form by analog switch; The input end of said analog switch selection array is connected with measurand, its output terminal is connected with the input end of digital signal change-over circuit and analog signal conversion respectively; The output terminal of digital signal change-over circuit and analog signal conversion is connected with the input end of digital signal acquiring circuit with the collection of simulant signal circuit respectively; The output terminal of digital signal acquiring circuit and collection of simulant signal circuit is connected with the input end of computer system respectively, and the output terminal of computer system is connected with LCD display.
2. a kind of portable on-line testing according to claim 1 and fault diagnosis system is characterized in that: said analog switch selects array to adopt Agilent U2751A USB modular switch matrix.
3. a kind of portable on-line testing according to claim 2 and fault diagnosis system; It is characterized in that: said digital signal change-over circuit is made up of four tunnel identical input circuit, four tunnel identical output circuit, comparer U1 and peripheral cell diode D1 thereof and resistance R 17; Said first input circuit is made up of resistance R 1 and resistance R 2, and said first output circuit is made up of photoelectrical coupler U2, resistance R 3 and resistance R 4; Termination analog switch after said resistance R 1 is connected with resistance R 2 is selected output terminal, its other end ground connection of array, and resistance R 1 is connected with input end 5 pin of comparer U1 with the node of R2; The negative electrode of the diode of said photoelectrical coupler U2 is connected with output terminal 2 pin of comparer U1; Its anode meets VCC through resistance R 3; The base stage of the triode of said photoelectrical coupler U2 meets VCC through resistance R 4, and its collector connects the input end of said digital signal acquiring circuit, its grounded emitter; Power end 3 pin of said comparer U1 meet VCC, are connected with VCC through resistance R 17 after its 4 pin, 6 pin, 8 pin and the 10 pin parallel connections, and the negative pole of said diode D1 connects 4 pin, its plus earth of said comparer U1.
4. a kind of portable on-line testing according to claim 3 and fault diagnosis system is characterized in that: said analog signal conversion is made up of isolated amplifier U6, power module U7 and capacitor C 1-C7; The said analog switch of the input termination of said isolated amplifier U6 is selected the output terminal of array, the input end of the said collection of simulant signal circuit of its output termination; The input termination direct current 15V power supply of said power module U7, its output terminal meets power end VDD1, GND1 and the VSS1 of said isolated amplifier U6 respectively; Said capacitor C 1-C7 is a filter capacitor.
5. a kind of portable on-line testing according to claim 4 and fault diagnosis system is characterized in that: said digital signal acquiring circuit is made up of CDT800 digital quantity I/O expansion module and SCM/LX-3160 module.
6. a kind of portable on-line testing according to claim 5 and fault diagnosis system is characterized in that: said collection of simulant signal circuit is made up of SEM/ADT-620 module and SCM/LX-3160 module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202335853U CN202119468U (en) | 2011-07-05 | 2011-07-05 | Portable on-line test and fault diagnosis system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202335853U CN202119468U (en) | 2011-07-05 | 2011-07-05 | Portable on-line test and fault diagnosis system |
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| CN202119468U true CN202119468U (en) | 2012-01-18 |
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| CN2011202335853U Expired - Fee Related CN202119468U (en) | 2011-07-05 | 2011-07-05 | Portable on-line test and fault diagnosis system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103019110A (en) * | 2012-08-23 | 2013-04-03 | 中国电子科技集团公司第四十一研究所 | Intelligent control system for modular switch |
| CN106872828A (en) * | 2017-03-16 | 2017-06-20 | 中国人民解放军军械工程学院 | The portable device for fast detecting of vehicle the synthetical electronics information system |
| CN110987026A (en) * | 2019-12-17 | 2020-04-10 | 华中科技大学 | Sensor signal acquisition system based on variable topology switch matrix |
| CN114582109A (en) * | 2020-11-30 | 2022-06-03 | 深圳富桂精密工业有限公司 | Terminal device |
-
2011
- 2011-07-05 CN CN2011202335853U patent/CN202119468U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103019110A (en) * | 2012-08-23 | 2013-04-03 | 中国电子科技集团公司第四十一研究所 | Intelligent control system for modular switch |
| CN103019110B (en) * | 2012-08-23 | 2015-08-05 | 中国电子科技集团公司第四十一研究所 | The intelligent control system of modular switch |
| CN106872828A (en) * | 2017-03-16 | 2017-06-20 | 中国人民解放军军械工程学院 | The portable device for fast detecting of vehicle the synthetical electronics information system |
| CN110987026A (en) * | 2019-12-17 | 2020-04-10 | 华中科技大学 | Sensor signal acquisition system based on variable topology switch matrix |
| CN110987026B (en) * | 2019-12-17 | 2021-11-02 | 华中科技大学 | Sensor signal acquisition system based on variable topology switch matrix |
| CN114582109A (en) * | 2020-11-30 | 2022-06-03 | 深圳富桂精密工业有限公司 | Terminal device |
| CN114582109B (en) * | 2020-11-30 | 2023-06-06 | 深圳富联富桂精密工业有限公司 | Terminal equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20160705 |
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| CF01 | Termination of patent right due to non-payment of annual fee |