CN205539259U - Multi -functional intelligent relay protection tester - Google Patents
Multi -functional intelligent relay protection tester Download PDFInfo
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- CN205539259U CN205539259U CN201620216227.4U CN201620216227U CN205539259U CN 205539259 U CN205539259 U CN 205539259U CN 201620216227 U CN201620216227 U CN 201620216227U CN 205539259 U CN205539259 U CN 205539259U
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Abstract
The utility model discloses a multi -functional intelligent relay protection tester, including mainboard, on -off output module and little signal output module, the output of mainboard is connected with on -off output module and little signal output module respectively, little signal output module include: DA converting circuit, second -order filtering circuit, voltage follower circuit and prevent the surge circuit, DA converting circuit and second -order filtering circuit are connected, second -order filtering circuit 's output is connected with voltage follower circuit, voltage follower circuit's output with prevent surge circuit connection. The utility model provides a multi -functional intelligent relay protection tester has on -off output module and little signal output module simultaneously to signal output is stable.
Description
Technical field
This utility model relates to a kind of multifunctional intellectual relay-protection tester.
Background technology
Owing to the information feedback amount of tradition transformer station is little; fault message is difficult to Macro or mass analysis; wiring complexity is loaded down with trivial details; and have the problems such as security risk for on-the-spot test operations staff; and in these years the developing rapidly of information, communication and network technology; people have begun to attempt researching and developing corresponding product and match, the therefore generation of intelligence relay-protection tester.
Intelligence relay-protection tester is in the course of the work; not only need externally to need output switch amount signal; it is also required to logical small-signal output port simultaneously and test data are sent to tested relay in the way of analogue signal; gather the response condition of tested relay further, provide foundation for subsequent analysis.Therefore it provides one can be provided simultaneously with on-off model output function and small-signal output function, can guarantee that again the intelligent relay-protection tester of stable output signal is extremely important.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that a kind of multifunctional intellectual relay-protection tester, has switching value output module and small-signal output module, and stable output signal simultaneously.
The purpose of this utility model is achieved through the following technical solutions: a kind of multifunctional intellectual relay-protection tester, including mainboard, switching value output module and small-signal output module；The outfan of mainboard is connected with switching value output module and small-signal output module respectively；
Described small-signal output module includes: D/A change-over circuit, second-order filter circuit, voltage follower circuit and anti-surge circuit；D/A change-over circuit is connected with second-order filter circuit, the outfan of second-order filter circuit is connected with voltage follower circuit, and the outfan of voltage follower circuit is connected with anti-surge circuit；
Described switching value output module includes: photoelectrical coupler U, the first resistance R1, the second resistance R2 and relay；The anode of the light-emitting diodes pipe end of optical coupling isolator U and the first working power connect, and the negative electrode of optical coupling isolator U light-emitting diodes pipe end is connected to the input of switching value output module by the first resistance R1；The colelctor electrode of the audion end of optical coupling isolator U and the second working power connect；The emitter stage of optical coupling isolator U audion end is connected with one end of relay core portion K1, the other end ground connection of core portion K1；Also set up between optical coupling isolator U with relay core portion K1 and be connected the second resistance R2 having ground connection；Switch sections K2 one end of relay connects high level, and the other end carries out output switch parameter.
The signal that switching value output module receives according to input, it is possible to control the current switching of core portion K1, thus control Guan Bi or the disconnection of relay switch part K2, when relay switch part K2 disconnects, output low level, during relay switch part K2 Guan Bi, exports high level.
Described D/A change-over circuit includes D/A conversion chip MC14433.
Described second-order filter circuit is Order RC filter circuit, including Order RC wave filter；The input of Order RC wave filter is connected with D/A change-over circuit, and the input of Order RC wave filter is connected with voltage follower circuit.
Described voltage follower circuit includes that the first amplifier A1, the positive input of the first amplifier A1 are connected with Order RC filter circuit, and the outfan of the first amplifier A1 is connected with reverse input end and the anti-surge circuit of the first amplifier A1 respectively.
Described anti-surge circuit includes gas-discharge tube D, the 3rd resistance R3 and TVS pipe；First end of the 3rd resistance R3 and the first common point connect；First common point is connected with the outfan of voltage follower circuit and one end of TVS pipe respectively；The other end of the 3rd resistance R3 is connected to the second common point, is connected to the signal output part of anti-surge circuit by the second common point；Second common point is connected with one end of gas-discharge tube D；The other end ground connection of gas-discharge tube D and being connected with TVS pipe.
The beneficial effects of the utility model are: (1) has switching value output module and small-signal output module, and stable output signal simultaneously.
(2) control signal that mainboard exports is converted into analogue signal with crossing D/A change-over circuit by small-signal output module, be filtered, carried out by voltage follower circuit and anti-surge circuit the output of signal again by second-order filter circuit, circuit has good stability.
(3) switching value output module is exported by light-coupled isolation control relay, strong interference immunity, stable output signal.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model.
Fig. 2 is the electrical block diagram of switching value output module.
Fig. 3 is the schematic diagram of voltage follower circuit.
Fig. 4 is the schematic diagram of anti-surge circuit.
Detailed description of the invention
The technical solution of the utility model is described in further detail below in conjunction with the accompanying drawings, but protection domain of the present utility model is not limited to the following stated.
As it is shown in figure 1, a kind of multifunctional intellectual relay-protection tester, including mainboard, switching value output module and small-signal output module；The outfan of mainboard is connected with switching value output module and small-signal output module respectively；
Described small-signal output module includes: D/A change-over circuit, second-order filter circuit, voltage follower circuit and anti-surge circuit；D/A change-over circuit is connected with second-order filter circuit, the outfan of second-order filter circuit is connected with voltage follower circuit, and the outfan of voltage follower circuit is connected with anti-surge circuit；
As shown in Figure 2, described switching value output module includes: photoelectrical coupler U, the first resistance R1, the second resistance R2 and relay；The anode of the light-emitting diodes pipe end of optical coupling isolator U and the first working power connect, and the negative electrode of optical coupling isolator U light-emitting diodes pipe end is connected to the input of switching value output module by the first resistance R1；The colelctor electrode of the audion end of optical coupling isolator U and the second working power connect；The emitter stage of optical coupling isolator U audion end is connected with one end of relay core portion K1, the other end ground connection of core portion K1；Also set up between optical coupling isolator U with relay core portion K1 and be connected the second resistance R2 having ground connection；Switch sections K2 one end of relay connects high level, and the other end carries out output switch parameter.
Further, the first described working power is 3.3V, and the second working power is 12V.
Further, described mainboard is for transmitting signal to switching value output module and small-signal output module, the signal that mainboard is transmitted by switching value output module exports with the form of on-off model, the signal that mainboard transmits is converted to analogue signal by small-signal output module, and exports with the form of simulation small-signal.
Further, the multifunctional intellectual relay-protection tester of the application also includes power module, switching input module and communication module；Power module is for powering for intelligence relay-protection tester；Switching input module inputs for on-off model, mainly includes a/d converter, and the signal that outside is collected by a/d converter is changed, and its output is connected with mainboard；Communication module can be wired, it is also possible to is wireless, for intelligence relay-protection tester and the communication of external smart equipment (such as computer etc.)；But the purpose of the application is to provide a kind of multifunctional intellectual relay-protection tester, has switching value output module and small-signal output module, and stable output signal simultaneously；The concrete structure that it should be noted that mainboard, power module, switching input module and communication module is not the application content to be protected, therefore is the most too much described.
Described D/A change-over circuit includes D/A conversion chip MC14433.
Described second-order filter circuit is Order RC filter circuit, including Order RC wave filter；The input of Order RC wave filter is connected with D/A change-over circuit, and the input of Order RC wave filter is connected with voltage follower circuit.
As it is shown on figure 3, described voltage follower circuit includes that the first amplifier A1, the positive input of the first amplifier A1 are connected with Order RC filter circuit, the outfan of the first amplifier A1 is connected with reverse input end and the anti-surge circuit of the first amplifier A1 respectively.
As shown in Figure 4, described anti-surge circuit includes gas-discharge tube D, the 3rd resistance R3 and TVS pipe；First end of the 3rd resistance R3 and the first common point connect；First common point is connected with the outfan of voltage follower circuit and one end of TVS pipe respectively；The other end of the 3rd resistance R3 is connected to the second common point, is connected to the signal output part of anti-surge circuit by the second common point；Second common point is connected with one end of gas-discharge tube D；The other end ground connection of gas-discharge tube D and being connected with TVS pipe.
Second-order filter circuit, it is possible to increase D/A is converted to analogue signal is filtered；Voltage follower circuit, it is possible to reduce the output impedance of analog output, improves load capacity and the linear stable degree of circuit；When having big surge voltage input in outside, energy is discharged into rapidly the earth by gas-discharge tube D, and the most described 3rd resistance R3 and described TVS pipe are prevented from energy residuals and enter, thus effectively prevent the impact that circuit is produced by surge.
Claims (5)
1. a multifunctional intellectual relay-protection tester, it is characterised in that: include mainboard, switching value output module and small-signal output module；The outfan of mainboard is connected with switching value output module and small-signal output module respectively；
Described small-signal output module includes: D/A change-over circuit, second-order filter circuit, voltage follower circuit and anti-surge circuit；D/A change-over circuit is connected with second-order filter circuit, the outfan of second-order filter circuit is connected with voltage follower circuit, and the outfan of voltage follower circuit is connected with anti-surge circuit；
Described switching value output module includes: photoelectrical coupler U, the first resistance R1, the second resistance R2 and relay；The anode of the light-emitting diodes pipe end of optical coupling isolator U and the first working power connect, and the negative electrode of optical coupling isolator U light-emitting diodes pipe end is connected to the input of switching value output module by the first resistance R1；The colelctor electrode of the audion end of optical coupling isolator U and the second working power connect；The emitter stage of optical coupling isolator U audion end is connected with one end of relay core portion K1, the other end ground connection of core portion K1；Also set up between optical coupling isolator U with relay core portion K1 and be connected the second resistance R2 having ground connection；Switch sections K2 one end of relay connects high level, and the other end carries out output switch parameter.
A kind of multifunctional intellectual relay-protection tester the most according to claim 1, it is characterised in that: described D/A change-over circuit includes D/A conversion chip MC14433.
A kind of multifunctional intellectual relay-protection tester the most according to claim 1, it is characterised in that: described second-order filter circuit is Order RC filter circuit, including Order RC wave filter；The input of Order RC wave filter is connected with D/A change-over circuit, and the input of Order RC wave filter is connected with voltage follower circuit.
A kind of multifunctional intellectual relay-protection tester the most according to claim 1; it is characterized in that: described voltage follower circuit includes the first amplifier A1; the positive input of the first amplifier A1 is connected with Order RC filter circuit, and the outfan of the first amplifier A1 is connected with reverse input end and the anti-surge circuit of the first amplifier A1 respectively.
A kind of multifunctional intellectual relay-protection tester the most according to claim 1, it is characterised in that: described anti-surge circuit includes gas-discharge tube D, the 3rd resistance R3 and TVS pipe；First end of the 3rd resistance R3 and the first common point connect；First common point is connected with the outfan of voltage follower circuit and one end of TVS pipe respectively；The other end of the 3rd resistance R3 is connected to the second common point, is connected to the signal output part of anti-surge circuit by the second common point；Second common point is connected with one end of gas-discharge tube D；The other end ground connection of gas-discharge tube D and being connected with TVS pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620216227.4U CN205539259U (en) | 2016-03-21 | 2016-03-21 | Multi -functional intelligent relay protection tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620216227.4U CN205539259U (en) | 2016-03-21 | 2016-03-21 | Multi -functional intelligent relay protection tester |
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| CN205539259U true CN205539259U (en) | 2016-08-31 |
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| CN201620216227.4U Active CN205539259U (en) | 2016-03-21 | 2016-03-21 | Multi -functional intelligent relay protection tester |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105785180A (en) * | 2016-03-21 | 2016-07-20 | 成都天进仪器有限公司 | Multifunctional intelligent relay protection tester |
| CN107196280A (en) * | 2017-06-27 | 2017-09-22 | 深圳市泰衡诺科技有限公司上海分公司 | Protection circuit, equipment and communication system |
-
2016
- 2016-03-21 CN CN201620216227.4U patent/CN205539259U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105785180A (en) * | 2016-03-21 | 2016-07-20 | 成都天进仪器有限公司 | Multifunctional intelligent relay protection tester |
| CN107196280A (en) * | 2017-06-27 | 2017-09-22 | 深圳市泰衡诺科技有限公司上海分公司 | Protection circuit, equipment and communication system |
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