CN102269976A - Multifunctional precise control testing platform - Google Patents
Multifunctional precise control testing platform Download PDFInfo
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- CN102269976A CN102269976A CN201110180244A CN201110180244A CN102269976A CN 102269976 A CN102269976 A CN 102269976A CN 201110180244 A CN201110180244 A CN 201110180244A CN 201110180244 A CN201110180244 A CN 201110180244A CN 102269976 A CN102269976 A CN 102269976A
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Abstract
The invention provides a multifunctional precise control testing platform, comprising a programmable logic controller (PLC) for supplying an isolating power supply of a working power supply and protection to a platform. The switching value input of the PLC comprises seven paths of direct input nodes. After being connected with a state node of peripheral equipment in series, the input nodes are connected to the PLC. The switching value output of the platform is output outwardly through eleven paths of contacts of an isolating relay connected with an output node of the PLC in series. The PLC is also connected to an analogue module. The analogue module is connected with a sensor of the peripheral equipment and used for outputting parameters of the peripheral equipment.
Description
Technical field
The present invention relates to a kind of control platform, particularly a kind of multi-functional accurate control test platform.
Background technology
At present, the supporting control corresponding of cover electrical test device meeting system, the experiment control system compatibility is relatively poor usually.Different testing requirementss, the equipment difference of use, control mode are also different.Same test needs multiple devices to cooperate, the different different test parameterss of testing equipment control, just need many people watch-dog, so often cause test control difficulty big, degree of accuracy is not high, repeatability is not strong, has prolonged the test period, and then has increased experimentation cost.
Summary of the invention
Technical matters to be solved by this invention provides a kind of simple in structure, low cost of manufacture, can repeat strong multi-functional accurate control test platform, the present invention has realized different testing requirementss, use equipment difference, the test that control mode is also different is finished by the testing equipment that this test platform centralized control is different.To the test that multiple devices cooperate, multiple testing equipment control extensive test parameter realizes isoparametric centralized detecting of switching value, analog quantity and logic control to the multiple devices of same test by writing Programmable Logic Controller PLC program.
To achieve these goals, the present invention adopts following technical scheme:
A kind of multi-functional accurate control test platform; comprise Programmable Logic Controller PLC; the insulating power supply and the protection of working power are provided for platform; the switching value input of described Programmable Logic Controller PLC comprises that 7 the tunnel directly import node; after this is imported node and the state node of external unit is connected; insert Programmable Logic Controller PLC; the switching value output of described platform is externally to export by the contact of 11 tunnel disconnecting relays of connecting with Programmable Logic Controller PLC output node; described Programmable Logic Controller PLC also is connected with analog module, and this analog module links to each other in order to the output parameter of external unit with the sensor of external unit.
As the preferred embodiments of the present invention, described insulating power supply and protection comprise air switch, fuse 1, isolating transformer, fuse 2, signal lamp, and 24V direct supply, wherein, external communication 220V power supply is connected to the input end of air switch by connection terminal, one end of air switch output is connected with the isolating transformer input end, and the other end is connected through the other end of overcurrent fuse 1 with the isolating transformer input; Described isolating transformer is exported an end and is connected signal lamps through overcurrent fuse 2, and provides working power for Programmable Logic Controller PLC and 24V direct supply.
As the preferred embodiments of the present invention, in the switching value input of described Programmable Logic Controller PLC, described 7 the tunnel directly import node imports by disconnecting relay, is concatenated into disconnecting relay line bag from the input contact, outside that terminal inserts, and inserts the input of PLC again by the contact of disconnecting relay.
As the preferred embodiments of the present invention, in the switching value input of described Programmable Logic Controller PLC, the input node of described Programmable Logic Controller PLC is connected with startup, the stop button of connecting with external unit.
As the preferred embodiments of the present invention, in described multi-functional accurate control test platform switching value output, the output of the disconnecting relay of connecting with described Programmable Logic Controller PLC output node is connected with the normally-open normally-close pair of contact, and this contact terminal row corresponding with Programmable Logic Controller PLC connects.
Compared with prior art, the multi-functional accurate control test platform of the present invention has the following advantages at least: test platform of the present invention has solved the sophisticated testing condition and (has been cooperatively interacted by multiple devices and to control different test parameterss, as flow, temperature, conductivity, voltage, electric current etc.) under cause problems such as the manual control difficulty is big, precision is low, realize switching value, the isoparametric centralized detecting of analog quantity and the logic control of measurement by Programmable Logic Controller PLC to various control in the test.In addition, different test control requirement can realize by the control program that host computer is rewritten PLC, has satisfied parameter detecting and logic control, has certain versatility.Host computer has the function of writing, revise test routine, can monitor analog quantity parameter simultaneously.
Description of drawings
Fig. 1 is the electrical schematic diagram of the multi-functional accurate control test platform of the present invention;
Fig. 2 is the power sourced electric schematic diagram of the multi-functional accurate control test platform of the present invention;
Fig. 3 is the input electrical schematic diagram of the multi-functional accurate control test platform of the present invention
Fig. 4 is the output principle figure of the multi-functional accurate control test platform of the present invention;
Fig. 5 is the output principle figure of the multi-functional accurate control test platform of the present invention;
Fig. 6 is the output state schematic diagram of the multi-functional accurate control test platform of the present invention
Fig. 7 is the connection terminal of the multi-functional accurate control test platform of the present invention.
Embodiment
Below in conjunction with accompanying drawing the multi-functional accurate control test platform of the present invention is described in detail.
See also shown in Figure 1ly, the multi-functional accurate control test platform of the present invention comprises that mainly insulating power supply and protection, host computer, Programmable Logic Controller PLC, input disconnecting relay, output disconnecting relay, State Control and demonstration and input, output connection arrange seven parts.
Described insulating power supply and protection provide working power for multi-functional accurate control test platform.Its electrical schematic diagram as shown in Figure 2.External communication 220V power supply is connected to the air switch input end by connection terminal, and an end of its output is connected with the isolating transformer input end, and the other end is connected through the other end of overcurrent fuse 1 with the isolating transformer input, and described fuse 1 plays the short-circuit protection effect.Described isolating transformer is exported an end and is connected signal lamp HL1 through overcurrent fuse 2, and for Programmable Logic Controller PLC, 24V direct supply provide working power, signal lamp HL1 can detect the insulating power supply duty.The 24V direct supply provides working power for Programmable Logic Controller PLC input, output node, the peripheral input that connects, output disconnecting relay and analog module.
The switching value input electrical schematic diagram of described Programmable Logic Controller PLC comprises that 7 the tunnel directly import node as shown in Figure 3, after the state node of external unit is connected, inserts Programmable Logic Controller PLC; Described 7 the tunnel directly import node imports by disconnecting relay, be concatenated into disconnecting relay line bag from the input contact, outside that terminal inserts, insert the input of PLC again by the contact of disconnecting relay, like this, the signal that might damage the test platform operation is carried out safe isolation; Described external unit is in series with 4 groups of startups, stop button, and this startup, stop button are directly connected to the input node of PLC, in order to the control external unit.
Described multi-functional accurate control test platform switching value output is externally to export by the contact of 11 tunnel disconnecting relays of connecting with the PLC output node, and each disconnecting relay output all has each pair of contact of normally-open normally-close, links to corresponding terminal row.Described disconnecting relay is that PLC operating circuit and external device circuitry safety are isolated, and improves the safety of this test platform operation, and its electrical schematic diagram such as Fig. 4 show.Its principle is to make corresponding disconnecting relay action with Programmable Logic Controller PLC output control signal, by the master control electrical apparatus of its contact control external unit, the effect that reaches control and regulate.Described terminal row is connected with external unit, realizes the centralized control functions of many equipment.
The sensor that described multi-functional accurate control test platform analog quantity input is values such as the voltage that participates in the output of the peripherals of test, electric current, flow, temperature by peripherals changes into 0～± 10V or 4～± signal of 20mA, receive the selected corresponding input end of analog module by connection terminal, detect the value of controlled device output analog quantity parameter, participate in Intelligent Measurement and the control of PLC.Gather the input of 4 tunnel analog quantitys, and can increase by expansion.Its electrical principle as shown in Figure 5.
Described multi-functional accurate control test platform is an auxiliary contact series connection pilot lamp by output relay to outside equipment running status, shows the running status of corresponding device.The status indicator lamp of KB1～KB7 seven road output relays is arranged on the control panel, is used to show the running status to deserved peripherals.Its electrical principle as shown in Figure 6.
Described multi-functional accurate control test platform is connected with external unit by terminal row, and terminal row comprises input power supply, switching value input wires terminal, switching value output wiring terminal, analog quantity input wires terminal.As shown in Figure 7.
Multi-functional accurate control test platform principle of work:
At different tests, at first, test parameters according to subjects requires and the strict analog quantity that detects and control of needs in process of the test, design multi-functional accurate control test platform switching value input, analog quantity input, switching value lead-out terminal and each Be Controlled testing equipment State Control switching value and need the corresponding relation of the analog quantity wiring of detected parameters (as electric current, temperature etc.), make one one correspondence, finish multi-functional accurate control test platform and dock, form new pilot system with the External Test Equipment that participates in examination.
Secondly, according to the test parameters requirement of subjects, write the control program of Programmable Logic Controller PLC.Equipment that a certain test of foundation need be controlled and the analog quantity quantity that needs monitoring, and the equipment running status that will show, the switching value input of reasonable distribution PLC, output node and state show pilot lamp.And according to the test parameters of each testing equipment control reach testing requirements required working time length or test parameters between mutual relationship be prerequisite, write test routine.Logical relation between each test parameters, the comparer by PLC is provided with scope to the information size of gathering, and output order when bigger than normal or less than normal is regulated control apparatus, timing relay regulating and controlling time by output.When satisfying, condition carries out next-step operation.To revision test repeatedly, control etc. by counter.Write the PLC program and satisfy logic control, when the adjustment of test parameters is had leisure and detection the equipment that participates in test.The whole test system is provided with protection, reports to the police, and the pilot system emergency stop function is set.
The 3rd, according to the requirement of test condition and test parameters, accurately control the pilot system of can test platform forming and debug test equipment and multiplex (MUX) by many bench teats.The logical relation of Correction and Control, the control accuracy of adjustment test parameters analog quantity makes it reach testing requirements.
At last, experiment work is finished automatically by PLC control under each testing equipment power supply normal condition.
The present invention is a kind of possess versatility and compatible test platform, this test platform has solved the sophisticated testing condition and (has been cooperatively interacted by multiple devices and to control different test parameterss, as flow, temperature, conductivity, voltage, electric current etc.) under cause problems such as the manual control difficulty is big, precision is low, realize switching value, the isoparametric centralized detecting of analog quantity and the logic control of measurement by Programmable Logic Controller PLC to various control in the test.Different test control requirement can realize by the control program that host computer is rewritten PLC, has satisfied parameter detecting and logic control, has certain versatility.Host computer has the function of writing, revise test routine, can monitor analog quantity parameter simultaneously.
The advantage of the multi-functional accurate control test platform of the present invention comprises:
1, this test platform realizes that switching value, analog quantity etc. to multiple parameter in the test realize centralized detecting and logic control having solved manually operated inexactness under the sophisticated testing condition by the PLC Programmable Logic Controller;
2, by rewriting the control program of PLC Programmable Logic Controller, realize the parameter detecting and the accurately logic control of dissimilar test loops, have certain versatility with same test platform.
3, adopt multiple branch circuit detection and control, realize the concentrated adjustment and the control of many test conditions, and finish the single or multiple repeated in experiments automatically, solved artificial in the bigger practical problems of test of many times result difference;
4, the control accuracy of PLC Programmable Logic Controller reaches the microsecond level, and data acquisition is accurate, has also guaranteed the high precision and the pin-point accuracy of test.
5, reduce the control difficulty of many test conditions, improved test efficiency.
The above only is one embodiment of the present invention, it or not whole or unique embodiment, the conversion of any equivalence that those of ordinary skills take technical solution of the present invention by reading instructions of the present invention is claim of the present invention and contains.
Claims (5)
1. multi-functional accurate control test platform; it is characterized in that: comprise Programmable Logic Controller PLC; the insulating power supply and the protection of working power are provided for platform; the switching value input of described Programmable Logic Controller PLC comprises that 7 the tunnel directly import node; after this is imported node and the state node of external unit is connected; insert Programmable Logic Controller PLC; the switching value output of described platform is externally to export by the contact of 11 tunnel disconnecting relays of connecting with Programmable Logic Controller PLC output node; described Programmable Logic Controller PLC also is connected with analog module, and this analog module links to each other in order to the output parameter of external unit with the sensor of external unit.
2. a kind of according to claim 1 multi-functional accurate control test platform, it is characterized in that: described insulating power supply and protection comprise air switch, fuse 1, isolating transformer, fuse 2, signal lamp (HL1), and 24V direct supply, wherein, external communication 220V power supply is connected to the input end of air switch by connection terminal, one end of air switch output is connected with the isolating transformer input end, and the other end is connected through the other end of overcurrent fuse 1 with the isolating transformer input; Described isolating transformer is exported an end and is connected signal lamps (HL1) through overcurrent fuse 2, and provides working power for Programmable Logic Controller PLC and 24V direct supply.
3. the multi-functional accurate control test platform of a kind of according to claim 1 crystalline substance, it is characterized in that: in the switching value input of described Programmable Logic Controller PLC, described 7 the tunnel directly import node imports by disconnecting relay, be concatenated into disconnecting relay line bag from the input contact, outside that terminal inserts, insert the input of PLC again by the contact of disconnecting relay.
4. a kind of multi-functional accurate control test platform as claimed in claim 3, it is characterized in that: in the switching value input of described Programmable Logic Controller PLC, the input node of described Programmable Logic Controller PLC is connected with startup, the stop button of connecting with external unit.
5. a kind of multi-functional accurate control test platform as claimed in claim 1, it is characterized in that: in described multi-functional accurate control test platform switching value output, the output of the disconnecting relay of connecting with described Programmable Logic Controller PLC output node is connected with the normally-open normally-close pair of contact, and this contact terminal row corresponding with Programmable Logic Controller PLC connects.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110180244 CN102269976B (en) | 2011-06-30 | 2011-06-30 | Multifunctional precise control testing platform |
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| CN 201110180244 CN102269976B (en) | 2011-06-30 | 2011-06-30 | Multifunctional precise control testing platform |
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| CN102269976B CN102269976B (en) | 2013-07-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539871A (en) * | 2011-12-12 | 2012-07-04 | 河南省电力公司洛阳供电公司 | Replay protection switching value isolation sensing circuit |
| CN111290328A (en) * | 2020-02-18 | 2020-06-16 | 唐山鼎信电器仪表工程有限公司 | PLC control anti-interference system |
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| US20040078182A1 (en) * | 2002-10-21 | 2004-04-22 | Mark Nixon | Simulation system for multi-node process control systems |
| CN2881843Y (en) * | 2005-08-23 | 2007-03-21 | 邹城市技工学校 | Actual training device of touch screen, programmable controller and frequency transformer |
| CN101634866A (en) * | 2009-02-10 | 2010-01-27 | 广州市高澜水技术有限公司 | Control system of pure water cooling device of high voltage direct current (HVDC) transmission converter valve |
| CN201725182U (en) * | 2010-08-16 | 2011-01-26 | 北京中科泛华测控技术有限公司 | Automatic control principle experimental module |
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2011
- 2011-06-30 CN CN 201110180244 patent/CN102269976B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040078182A1 (en) * | 2002-10-21 | 2004-04-22 | Mark Nixon | Simulation system for multi-node process control systems |
| CN2881843Y (en) * | 2005-08-23 | 2007-03-21 | 邹城市技工学校 | Actual training device of touch screen, programmable controller and frequency transformer |
| CN101634866A (en) * | 2009-02-10 | 2010-01-27 | 广州市高澜水技术有限公司 | Control system of pure water cooling device of high voltage direct current (HVDC) transmission converter valve |
| CN201725182U (en) * | 2010-08-16 | 2011-01-26 | 北京中科泛华测控技术有限公司 | Automatic control principle experimental module |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539871A (en) * | 2011-12-12 | 2012-07-04 | 河南省电力公司洛阳供电公司 | Replay protection switching value isolation sensing circuit |
| CN102539871B (en) * | 2011-12-12 | 2014-06-18 | 河南省电力公司洛阳供电公司 | Replay protection switching value isolation sensing circuit |
| CN111290328A (en) * | 2020-02-18 | 2020-06-16 | 唐山鼎信电器仪表工程有限公司 | PLC control anti-interference system |
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| CN102269976B (en) | 2013-07-24 |
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Application publication date: 20111207 Assignee: Xi'an Xidian Power System Co., Ltd. Assignor: China XD Electronic Corporation Contract record no.: 2014610000074 Denomination of invention: Multifunctional precise control testing platform Granted publication date: 20130724 License type: Exclusive License Record date: 20140423 |
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