CN109445415B - Precision testing equipment for P L C input/output channel - Google Patents
Precision testing equipment for P L C input/output channel Download PDFInfo
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- CN109445415B CN109445415B CN201811268808.2A CN201811268808A CN109445415B CN 109445415 B CN109445415 B CN 109445415B CN 201811268808 A CN201811268808 A CN 201811268808A CN 109445415 B CN109445415 B CN 109445415B
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- slide way
- conductive strips
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- 238000012360 testing method Methods 0.000 title claims abstract description 114
- 239000004020 conductor Substances 0.000 claims abstract description 83
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 238000004891 communication Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 4
- 101000820460 Homo sapiens Stomatin Proteins 0.000 description 2
- 102100021685 Stomatin Human genes 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
Abstract
The invention relates to the technical field of P L C input/output module channel detection, in particular to a precision test device for a P L C input/output channel, which comprises a test terminal row and a movable contact assembly, wherein a row of conductive strips are arranged on the front surface of a test terminal access plate, two conductor slideways are vertically arranged on the back surface of the test terminal access plate, the conductive strips are electrically connected with test terminals of the test terminal row in a one-to-one correspondence manner, and the two movable conductors respectively vertically move along the respective conductor slideways to realize the communication between the conductor slideways and any conductive strip, so that a current loop formed by any two test terminals on the test terminal row is connected into an electric signal test instrument.
Description
Technical Field
The invention relates to the technical field of P L C input/output module channel detection, in particular to a precision test device for a P L C input/output channel.
Background
A pumped storage power station monitoring system adopts A L STOM C80-35 series P L C, A L STOM C80-35 series P L C which is a direct control unit from local controlled equipment to the monitoring system to go up and down, and consists of a CPU module, an input/output interface board and the like, wherein signals go up to the input module through the interface board, then enter the CPU module, finally are sent to the monitoring system in a communication mode, go down to the output interface board through the output module, and finally go down to the controlled equipment through hard wiring.
According to the requirements of industrial standards and power station regulations, the precision of a P L C input/output module channel needs to be tested every year, wherein the conversion error of an analog input/output channel is not more than 0.25% so as to ensure the precision of signal transmission, aiming at the P L C analog input/output channel, the traditional testing method is to disassemble the wiring of an interface board, access a signal generator or a collection instrument through a wire clamp, monitor a variable point table in real time through a monitoring background (or a debugging computer), and compare and calculate the channel precision with a standard value.
The traditional test method for testing the precision of the P L C input/output module channel comprises the steps that a power station operation and maintenance worker manufactures a special test terminal row and uses the special test terminal row in cooperation with a signal generator, the test terminal row is replaced by an original working terminal row during testing, then the signal generator is connected to a test terminal of the test terminal row, and testing of different input channels is completed by adjusting the position of a test clip on the test terminal row.
Disclosure of Invention
Aiming at the defects and problems that in the prior art, due to the fact that a plurality of analog quantity signals exist, time and labor are wasted when a test terminal is adjusted continuously during testing, and equipment is easy to damage, the invention provides precision testing equipment for a P L C input/output channel.
The invention solves the technical problem by adopting the scheme that the precision test equipment for the P L C input/output channel comprises a test terminal row and a movable contact component, wherein the movable contact component comprises a test terminal access plate and two movable conductors, a row of conductive strips are arranged on the front surface of the test terminal access plate, two conductor slideways are vertically arranged on the back surface of the test terminal access plate, the conductive strips are electrically connected with the test terminals of the test terminal row in a one-to-one correspondence manner, and the two conductor slideways are respectively connected with an electric signal test instrument through an X pole needle and a Y pole needle;
the movable conductor comprises a conductor clamping groove and an elastic clamping piece, the conductor clamping groove is positioned on the back face of the test terminal access board, the elastic clamping piece is positioned on the front face of the test terminal access board, the conductor clamping groove is clamped on the conductor slide way, the elastic clamping piece is in contact with the conductive belt, and the positions, located on the two sides of the test terminal access board, of the movable conductor are provided with adjusting handles;
the lateral pressing device is arranged on the outer side of the conductor clamping groove and comprises a lateral pressing elastic sheet and an elastic sheet slide way, the elastic sheet slide way is parallel to the conductor slide way, one end of the lateral pressing elastic sheet is connected to the side face of the conductor clamping groove, the other end of the lateral pressing elastic sheet is elastically bent and is in sliding contact with the elastic sheet slide way, and the lateral pressing elastic sheet is driven by the conductor clamping groove to slide up and down along the elastic sheet slide way and provide lateral pressure pointing to the direction of the conductor slide way for the conductor.
Further, test terminal access board and two removal conductors all set up in the insulating box, the rectangular hole has been seted up to the side of insulating box, be provided with the test terminal indicator with each test terminal one-to-one in rectangular hole department, the handle of transferring dials stretches out and reciprocates along the rectangular hole in following the rectangular hole.
Furthermore, the outer side of the conductor slide is provided with a conductor, the X pole needle and the Y pole needle are connected to the upper end of the conductor, and the test pole columns of the X pole needle and the Y pole needle extend out of the insulating box body and are connected with a clamp of an electric signal testing instrument.
Furthermore, the conductive strips are electrically connected with the test terminals of the test terminal row in a one-to-one correspondence mode through signal wires, and signal cable sheaths are sleeved on the signal wires outside the insulating box body.
Furthermore, the conductive strips are a row of pure copper conductive strips which are uniformly arranged, an insulating strip is arranged between every two adjacent conductive strips, and the width of the insulating strip is larger than that of the conductive strips and larger than that of the elastic clamping pieces.
Furthermore, the tail end of the elastic clamping piece is provided with an arc-shaped part sunken towards the direction of the conductive belt, and the arc-shaped part is pressed down to be in fit contact with the conductive belt.
Further, the electric signal testing instrument is a signal generator or a collecting instrument.
The precision test equipment for the P L C input/output channel has the advantages that the working terminal row is replaced by the test terminal row, then the signal wires are connected to the test terminal row one by one, the test terminal access board in the insulating shell is introduced, the 16 test terminals are sequentially arranged on the 1 test terminal access board, different test terminals are respectively connected with the conductor slide ways through the left and right 2 moving conductors, and therefore the test terminal is connected to an electric signal test instrument.
Meanwhile, a lateral pressure device is independently arranged on the conductor slide way, lateral pressure elastic pieces outside the conductor slide way provide lateral pressure pointing to the direction of the conductor slide way for the conductor clamping grooves, and the conductor clamping grooves are tightly pressed on the conductor slide way, so that a good conduction state between the moving conductor and the conductor slide way is ensured, the moving conductor is prevented from sliding downwards, and the moving conductor is clamped on a corresponding conductive belt by the elasticity of the elastic clamping pieces.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural view of the movable contact assembly.
Fig. 3 is a top view of the movable contact assembly.
Fig. 4 is a side view of a test terminal access panel.
In the figure: 1-test terminal row, 2-test terminal access plate, 3-conductive band, 4-conductor slideway, 5-test pole, 6-conductor, 7-moving conductor, 71-conductor clamping groove, 72-elastic clamping piece, 73-arc part, 8-adjusting handle, 9-side pressure elastic piece, 10-elastic piece slideway, 11-insulating box body, 12-rectangular hole, 13-test terminal indicator, 14-signal wire, 15-signal cable sheath and 16-insulating band.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Embodiment 1 a precision testing apparatus for P L C input/output channels, as shown in fig. 1 to 4, includes a test terminal strip 1 and a movable contact assembly, during testing, the test terminal strip 1 is switched into a working circuit instead of an original working terminal strip, test terminals on the test terminal strip 1 are respectively switched into the movable contact assembly through signal lines 14, and are switched into an electrical signal testing instrument through the movable contact assembly, where the common electrical signal testing instrument is a signal generator or a collection instrument.
The movable contact assembly is completely installed in an insulation box body 11 and comprises a test terminal access plate 2 and two movable conductors 7, a row of conductive strips 3 are arranged on the front face of the test terminal access plate 2 and are uniformly arranged, an insulation strip 16 is arranged between the two conductive strips 3, 16 conductive strips are totally arranged in the embodiment, the conductive strips 3 are electrically connected with test terminals of a test terminal row 1 in a one-to-one correspondence mode, 16 conductive strips are respectively and correspondingly connected with 16 test terminals in total on C1-C16 on the test terminal row, two vertical conductor slideways 4 are arranged on the back face of the test terminal access plate 2, the two movable conductors 7 respectively slide up and down along the respective conductor slideways 4, one end of each conductive strip 7 is in full conductive contact with the conductor slideway 4 on the back face of the test terminal access plate in the sliding process, the other end of each conductive strip is in discontinuous conductive contact with the 16 conductive strips 3 on the front face of the test terminal access plate, the conductive strips 3, the movable conductors 7 and the conductor slideways 4 are communicated, the upper ends of the conductive strips 6 on the outer sides of the conductive strips 4 are connected with an X pole needle, a Y pole needle, an X pole needle, a Y pole, an X pole, a Y.
The movable conductor 7 comprises a conductor clamping groove 71 and an elastic clamping piece 72, the conductor clamping groove 71 is positioned on the back of the test terminal access board and clamped on the conductor slide 4, the elastic clamping piece 72 is positioned on the front of the test terminal access board and contacted with the conductive belt 3, the position of the movable conductor 7 positioned on two sides of the test terminal access board 2 is also provided with a transfer handle 8, the transfer handle 8 extends out of a rectangular hole 12 on the side surface of the insulating box body 11 and moves up and down along the rectangular hole, wherein a row of test terminal indicator marks 13 corresponding to the test terminals one by one are vertically marked beside the rectangular hole 12, the transfer handle 8 points to a certain test terminal indicator mark 13 to represent that the elastic clamping piece 72 connected with the transfer handle 8 is contacted with the conductive belt 3 connected with the test terminal at the moment, so in operation, a tester only needs to transfer the transfer handle 8 to the corresponding position to complete the connection of the test, the signal cable does not need to be disassembled or assembled or the test terminal does not need to be clamped and placed frequently, so that the test is quicker and more convenient; moreover, the width of the elastic clamping piece 72 is smaller than that of the conductive strip 3, so that the elastic clamping piece is always in contact with one conductive strip; the tail end of the elastic clamping piece 72 is provided with an arc-shaped part 73 which is sunken towards the direction of the conductive belt, and the arc-shaped part is pressed down to be attached and contacted with the conductive belt 3 and provide pressure to ensure that the elastic clamping piece 72 is tightly attached to the conductive belt; the signal line 14 connected between the conductive band 3 and the test terminal row 1 penetrates out of the insulating box body 11, a signal cable sheath 15 is sleeved on the signal line outside the insulating box body, and the signal line 14 and the signal cable sheath 15 are made of soft materials to prevent the test terminal from loosening.
A lateral pressing device is arranged outside the conductor clamping groove 71 and presses the moving conductor 7 on the conductor slide way 4 from the side surface, so that the sliding down caused by the loosening of the moving conductor can be prevented; the lateral pressing device comprises a lateral pressing elastic sheet 9 and an elastic sheet slide way 10, the elastic sheet slide way 10 is positioned on the back of the test terminal access plate 2 and is parallel to the conductor slide way 4, one end of the lateral pressing elastic sheet 9 is installed on the side face of the conductor clamping groove 71 through a bolt, the other end of the lateral pressing elastic sheet 9 is elastically bent and is in sliding contact with the elastic sheet slide way 10, the lateral pressing elastic sheet 9 is driven by the conductor clamping groove to slide up and down along the elastic sheet slide way 10, lateral pressure pointing to the direction of the conductor slide way 4 is provided for the conductor clamping groove 71, the conductor clamping groove 71 is tightly pressed on the conductor slide way 4, good conduction state between the moving conductor 7 and the conductor slide way 4.
Claims (7)
1. The precision test equipment of the P L C input/output channel is characterized by comprising a test terminal row and a movable contact assembly, wherein the movable contact assembly comprises a test terminal access plate and two movable conductors, a row of conductive strips are arranged on the front surface of the test terminal access plate, two conductor slideways are vertically arranged on the back surface of the test terminal access plate, the conductive strips are electrically connected with the test terminals of the test terminal row in a one-to-one correspondence manner, and the two conductor slideways are respectively connected with an electric signal test instrument through an X pole needle and a Y pole needle;
the movable conductor comprises a conductor clamping groove and an elastic clamping piece, the conductor clamping groove is positioned on the back face of the test terminal access board, the elastic clamping piece is positioned on the front face of the test terminal access board, the conductor clamping groove is clamped on the conductor slide way, the elastic clamping piece is in contact with the conductive belt, and the positions, located on the two sides of the test terminal access board, of the movable conductor are provided with adjusting handles;
the lateral pressing device is arranged on the outer side of the conductor clamping groove and comprises a lateral pressing elastic sheet and an elastic sheet slide way, the elastic sheet slide way is parallel to the conductor slide way, one end of the lateral pressing elastic sheet is connected to the side face of the conductor clamping groove, the other end of the lateral pressing elastic sheet is elastically bent and is in sliding contact with the elastic sheet slide way, and the lateral pressing elastic sheet is driven by the conductor clamping groove to slide up and down along the elastic sheet slide way and provide lateral pressure pointing to the direction of the conductor slide way for the conductor.
2. The precision testing equipment of the P L C input/output channel according to claim 1, wherein the test terminal access board and the two moving conductors are both disposed in an insulating box, a rectangular hole is formed in a side surface of the insulating box, test terminal indicators corresponding to the test terminals one to one are disposed at the rectangular hole, and the dial handle extends out of the rectangular hole and moves up and down along the rectangular hole.
3. The precision testing equipment for the P L C input/output channel according to claim 2, wherein the conductor is arranged outside the conductor slide way, the X pole needle and the Y pole needle are connected to the upper end of the conductor, and the test poles of the X pole needle and the Y pole needle extend out of the insulating box and are connected with a clamp of an electrical signal testing instrument.
4. The precision test equipment of the P L C input/output channel according to claim 2, wherein the conductive strips are electrically connected with the test terminals of the test terminal row in a one-to-one correspondence manner through signal wires, and a signal cable sheath is sleeved on the signal wires outside the insulating box body.
5. The apparatus for testing the accuracy of the P L C I/O channel according to claim 1, wherein the conductive strips are a row of pure copper conductive strips uniformly arranged, an insulating strip is arranged between two adjacent conductive strips, and the width of the insulating strip is greater than that of the conductive strips and greater than that of the elastic clamping pieces.
6. The apparatus for testing the accuracy of the P L C I/O channel as claimed in claim 1, wherein the elastic clip has an end provided with an arc portion recessed toward the conductive strip, and the arc portion is pressed down to contact with the conductive strip.
7. The precision testing equipment of the P L C input-output channel is characterized in that the electric signal testing instrument is a signal generator or a collection instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811268808.2A CN109445415B (en) | 2018-10-29 | 2018-10-29 | Precision testing equipment for P L C input/output channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811268808.2A CN109445415B (en) | 2018-10-29 | 2018-10-29 | Precision testing equipment for P L C input/output channel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109445415A CN109445415A (en) | 2019-03-08 |
| CN109445415B true CN109445415B (en) | 2020-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811268808.2A Active CN109445415B (en) | 2018-10-29 | 2018-10-29 | Precision testing equipment for P L C input/output channel |
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| CN (1) | CN109445415B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285848B (en) * | 2019-07-11 | 2024-02-20 | 北京市水科学技术研究院 | Engineering safety monitoring line concentration device and engineering safety monitoring manual measuring and reading system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201615911U (en) * | 2010-03-11 | 2010-10-27 | 哈尔滨建成集团有限公司 | Transmitting box of cable tester |
| CN202119870U (en) * | 2011-06-28 | 2012-01-18 | 石家庄供电公司 | Novel insulating test box |
| CN102721840A (en) * | 2012-07-12 | 2012-10-10 | 东莞市龙健电子有限公司 | Multi-interface-plug movable testing fixture |
| CN202840069U (en) * | 2012-09-15 | 2013-03-27 | 埃泰克汽车电子(芜湖)有限公司 | Connecting device used for testing automobile instrument |
| CN104793125B (en) * | 2015-04-27 | 2018-09-28 | 许继集团有限公司 | A kind of test device of photovoltaic combiner box current divider measurement plate |
| CN207502658U (en) * | 2017-08-31 | 2018-06-15 | 中国大唐集团科学技术研究院有限公司华中分公司 | A kind of connecting terminal block test connecting apparatus |
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- 2018-10-29 CN CN201811268808.2A patent/CN109445415B/en active Active
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| CN109445415A (en) | 2019-03-08 |
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