CN105807162A - Action monitoring circuit for secondary circuits in electrical system and terminal strip - Google Patents
Action monitoring circuit for secondary circuits in electrical system and terminal strip Download PDFInfo
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- CN105807162A CN105807162A CN201610180402.3A CN201610180402A CN105807162A CN 105807162 A CN105807162 A CN 105807162A CN 201610180402 A CN201610180402 A CN 201610180402A CN 105807162 A CN105807162 A CN 105807162A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
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Abstract
The invention discloses an action monitoring circuit for secondary circuits in an electrical system and a terminal strip.The action monitoring circuit for the secondary circuits in the electrical system comprises a plurality of collecting chips, a plurality of comparing chips and a plurality of prompting circuits.The collecting chips are connected with the secondary circuits respectively and used for sampling current in the secondary circuits to obtain a plurality of sampling signals, wherein the sampling signals are obtained by sampling the current in the secondary circuits respectively.The comparing chips are connected with the collecting chips respectively and used for comparing the sampling signals with a reference signal to obtain a plurality of comparing results, wherein whether action current exits in the secondary circuits or not is judged according to the comparing results.The prompting circuits are connected with the comparing chips respectively and used for giving prompt about the comparing results.The action monitoring circuit solves the problem that in the related technology, large space is occupied when a plurality of signal relays are used for monitoring action signals of a plurality of secondary circuits.
Description
Technical field
The present invention relates to electric field, in particular to the action supervisory circuit of secondary circuit in a kind of electrical system and terminal block.
Background technology
The secondary circuit of electrical system is to be interconnected by secondary device; constitute electric loop primary equipment being controlled, protect, regulate, measure or monitoring, for each parameter in primary circuit and each element are controlled, protect, regulate, measure or are monitored.Secondary circuit is low tension loop, for instance, measure loop, relay protection circuit, on-off control and signal circuit, operational power source circuit, the electric blocking loop etc. of chopper and isolation switch.
In electrical system, multichannel secondary circuit is generally had to connect same primary equipment, when primary equipment breaks down or during improper action, it is necessary to judge that the actuating signal specifically by which secondary circuit sent causes the exception of primary equipment, in order to analyze reason.Such as, in the breaker control circuit and low voltage frequency converter on off control loop of power system, all there is multiple secondary circuit that killer switch or converter are controlled, when the improper action of the primary equipment such as chopper or converter, the exception owing to the actuating signal of which secondary circuit causes must be judged rapidly, in order to staff's analyzing failure cause.
By adopting the method for reload signal relay in each secondary circuit to monitor the action of secondary circuit in correlation technique, if the signal relay that certain secondary circuit is corresponding occurs locked, then may determine that it is cause chopper or the improper action of converter due to the action of this secondary circuit.But multiple signal relay is installed and takes up room bigger, installation difficulty, wiring is complicated, configuration underaction, action is non-directional is easily caused wrong report, relatively costly, action sensitivity such as can not regulate at the problem, and the special technology of current not a kind of low cost and equipment monitor the action of multiple secondary circuit.
By multiple signal relays, the actuating signal of multiple secondary circuits is monitored the bigger problem that takes up room in correlation technique, not yet proposes effective solution at present.
Summary of the invention
Present invention is primarily targeted at action supervisory circuit and terminal block that secondary circuit in a kind of electrical system is provided, to solve the actuating signal of multiple secondary circuits is monitored the bigger problem that takes up room by multiple signal relays by correlation technique.
To achieve these goals, according to an aspect of the invention, it is provided the action supervisory circuit of secondary circuit in a kind of electrical system.In this electrical system, the action supervisory circuit of secondary circuit includes: multiple acquisition chips, it is connected with multiple secondary circuits respectively, for the electric current in multiple secondary circuits is sampled, obtain multiple sampled signal, wherein, multiple sampled signals are the signal obtained of respectively electric current in multiple secondary circuits being sampled；Multiple comparable chip, are connected with multiple acquisition chips respectively, are used for multiple sampled signals compared with reference signal, obtain multiple comparative result, wherein, judge whether multiple secondary circuit has action current by multiple comparative results；And multiple cue circuit, it is connected with multiple comparable chip respectively, is used for pointing out multiple comparative result.
Further, multiple secondary circuits include the first secondary circuit and the second secondary circuit, multiple acquisition chips include the first acquisition chip and the second acquisition chip, for the electric current gathered respectively in the first secondary circuit and the second secondary circuit and obtain the first sampled signal and the second sampled signal, reference signal includes the first reference signal and the second reference signal, multiple comparable chip include: the first comparable chip, it is connected with the first acquisition chip, for the first sampled signal and the first reference signal are compared, obtain the first comparative result, wherein, judge whether the first secondary circuit has action current by the first comparative result；And second comparable chip, it is connected with the second acquisition chip, for the second sampled signal and the second reference signal are compared, obtains the second comparative result, wherein, judge whether the second secondary circuit has action current by the second comparative result.
Further, in this electrical system, the action supervisory circuit of secondary circuit also includes: the first reference circuit, is connected with the first comparable chip, is used for providing the first reference signal；And second reference circuit, it is connected with the second comparable chip, is used for providing the second reference signal.
Further, multiple cue circuits include: the first display, are connected with the first comparable chip, are used for showing the first comparative result；And second display, it is connected with the second comparable chip, is used for showing the second comparative result.
Further, in this electrical system, the action supervisory circuit of secondary circuit also includes: the first holding circuit, is connected with the first display, is used for keeping the first display to show the first comparative result；Second holding circuit, is connected with second display, is used for keeping second display to show the second comparative result；First reset circuit, is connected with the first display, and first display that is used for resetting is to original state；And second reset circuit, it being connected with second display, the second display that is used for resetting is to original state.
Further, multiple cue circuits include multiple light emitting diode, are connected with multiple comparable chip respectively.
Further, the first holding circuit and the second holding circuit are one-way SCR.
Further, in this electrical system, the action supervisory circuit of secondary circuit includes four road voltage comparator LM339, and wherein, four road voltage comparator LM339 include four comparable chip, is used at most four sampled signals compared with reference signal.
Further, in multiple acquisition chips, at least one acquisition chip is ACS712 hell integrated sensor.
Further, in this electrical system, the action supervisory circuit of secondary circuit also includes: electric power driving module, and with multiple acquisition chips, multiple comparable chip are connected with multiple cue circuits, for providing running voltage for multiple acquisition chips, multiple comparable chip and multiple cue circuit.
To achieve these goals, according to an aspect of the invention, it is provided a kind of terminal block.The action supervisory circuit that this terminal block is integrated with in the electrical system of the present invention secondary circuit, wherein, this terminal block is connected with the circuit node of multiple secondary circuits respectively.
The present invention passes through multiple acquisition chips, it is connected with multiple secondary circuits respectively, for the electric current in multiple secondary circuits is sampled, obtains multiple sampled signal, wherein, multiple sampled signals are the signal obtained of respectively electric current in multiple secondary circuits being sampled；Multiple comparable chip, are connected with multiple acquisition chips respectively, are used for multiple sampled signals compared with reference signal, obtain multiple comparative result, wherein, judge whether multiple secondary circuit has action current by multiple comparative results；And multiple cue circuit, it is connected with multiple comparable chip respectively, is used for pointing out multiple comparative result, solves in correlation technique, by multiple signal relays, the actuating signal of multiple secondary circuits is monitored the bigger problem that takes up room.Judge by adopting chip component that the electric current in secondary circuit is acquired whether secondary circuit has action current, and then reached save the space of supervisory circuit and reduce the effect of cost.
Accompanying drawing explanation
The accompanying drawing constituting the part of the application is used for providing a further understanding of the present invention, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the action supervisory circuit of secondary circuit in electrical system according to a first embodiment of the present invention；
Fig. 2 is the schematic diagram of the action supervisory circuit of secondary circuit in electrical system according to a second embodiment of the present invention；
Fig. 3 is the schematic diagram of the action supervisory circuit of secondary circuit in electrical system according to a third embodiment of the present invention；
Fig. 4 is terminal block according to a first embodiment of the present invention and the connection diagram of breaker control circuit in electrical system；And
Fig. 5 is the connection diagram of terminal block according to a second embodiment of the present invention and electrical system mesolow converter on off control loop.
Detailed description of the invention
It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
In order to make those skilled in the art be more fully understood that the application scheme, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only the embodiment of the application part, rather than whole embodiments.Based on the embodiment in the application, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, all should belong to the scope of the application protection.
It should be noted that term " first " in the description and claims of this application and above-mentioned accompanying drawing, " second " etc. are for distinguishing similar object, without being used for describing specific order or precedence.Should be appreciated that the data of so use can be exchanged in the appropriate case, in order to embodiments herein described herein.In addition, term " includes " and " having " and their any deformation, it is intended to cover non-exclusive comprising, such as, contain series of steps or the process of unit, method, system, product or equipment be not necessarily limited to those steps or the unit clearly listed, but can include clearly not listing or for intrinsic other step of these processes, method, product or equipment or unit.
The embodiment provides the action supervisory circuit of secondary circuit in a kind of electrical system.
Fig. 1 is the schematic diagram of the action supervisory circuit of secondary circuit in electrical system according to a first embodiment of the present invention.As it is shown in figure 1, the action supervisory circuit of secondary circuit includes multiple acquisition chip 10, multiple comparable chip 20 and multiple cue circuit 30 in this electrical system.
Multiple acquisition chips 10 are connected with multiple secondary circuits respectively, for the electric current in multiple secondary circuits is sampled, obtain multiple sampled signal.Wherein, multiple sampled signals are the signal obtained of respectively electric current in multiple secondary circuits being sampled.
Secondary circuit is the secondary circuit in electrical system; may be used for each parameter in primary circuit and each element are controlled, protect, regulate, measure or are monitored; such as; measure loop; relay protection circuit; on-off control and signal circuit, operational power source circuit, the electric blocking loop etc. of chopper and isolation switch.
Multiple acquisition chips 10 are connected with multiple secondary circuits respectively, the corresponding acquisition chip of each secondary circuit, connected mode between acquisition chip with secondary circuit can be that the pin of acquisition chip is connected with the node in secondary circuit, gathers the electric current in secondary circuit.
When secondary circuit there being electric current pass through, current signal collection in secondary circuit is converted to sampled signal by acquisition chip, when secondary circuit not having electric current pass through, it is the sampled signal of standard value that acquisition chip can export an occurrence, and this standard value can serve as the reference value judging whether have electric current to pass through in secondary circuit.
The acquisition chip adopted in the action supervisory circuit of secondary circuit in this electrical system can be ACS712 hell integrated sensor, current signal can be converted to voltage signal by ACS712 hell integrated sensor, can according to the different choice of secondary circuit operating current concrete model accordingly.
The running voltage of ACS712 is the running voltage that 5V, ACS712 export stable 0.5 times when no signal current inputs, i.e. 2.5V.When there being electric current I to pass through in secondary circuit, ACS712 exports the voltage of 2.5V ± I (66～185mV/A) V.Wherein, the basis of 2.5V carries out addition or subtraction is based on secondary circuit and accesses what the sense of current of ACS712 was determined.If the electric current flowing into the secondary circuit of ACS712 is forward current, then ACS712 exports the voltage of 2.5V+I (66～185mV/A) V；If the electric current flowing into the secondary circuit of ACS712 is negative current, then ACS712 exports the voltage of 2.5V-I (66～185mV/A) V；Different according to ACS712 model, the electric current of input ACS712 and the ratio of ACS712 output voltage between 66～185mV/A not etc..
Multiple comparable chip 20 are connected with multiple acquisition chips 10 respectively, are used for multiple sampled signals compared with reference signal, obtain multiple comparative result.Wherein, judge whether multiple secondary circuit has action current by multiple comparative results.Secondary circuit there is action current represent this secondary circuit generation action.Each comparable chip correspondence connects an acquisition chip, for sampled signal and reference signal that acquisition chip exports being compared, obtains comparative result, comparative result include more than, less than be equal to.It is alternatively possible to be comparative result be more than time represent that secondary circuit has action current, it is also possible to be comparative result be less than time represent that secondary circuit has action current, determine according to the concrete connected mode of circuit.
Preferably, multiple secondary circuits include the first secondary circuit and the second secondary circuit, multiple acquisition chips 10 include the first acquisition chip and the second acquisition chip, for the electric current gathered respectively in the first secondary circuit and the second secondary circuit and obtain the first sampled signal and the second sampled signal, reference signal includes the first reference signal and the second reference signal, multiple comparable chip 20 include: the first comparable chip, it is connected with the first acquisition chip, for the first sampled signal and the first reference signal are compared, obtain the first comparative result, wherein, judge whether the first secondary circuit has action current by the first comparative result；And second comparable chip, it is connected with the second acquisition chip, for the second sampled signal and the second reference signal are compared, obtains the second comparative result, wherein, judge whether the second secondary circuit has action current by the second comparative result.
This electrical system can adopt four road voltage comparator LM339 as comparable chip in the action supervisory circuit of secondary circuit.Four comparable chip are included, it is possible to for receiving at most four sampled signals, by most four sampled signals compared with reference signal inside LM339.The reference signal of LM339 can adjust, if the comparative result of LM339 be sampled signal more than reference signal, then export high potential, if the comparative result of LM339 be sampled signal less than reference signal, then export electronegative potential.
Specifically, multiple comparable chip 20 can use same reference signal as the benchmark compared, can also being that each comparable chip inputs different reference signals respectively, wherein, the value of the reference signal that each comparable chip is corresponding specifically can be arranged according to different secondary circuits.The value of this reference signal can be the above-mentioned middle secondary circuit standard value that acquisition chip exports when not having electric current to pass through.Concrete condition according to secondary circuit, this reference signal can arrange a range of error.Such as, the standard value that when secondary circuit does not have electric current to pass through, acquisition chip ACS712 exports is voltage 2.5V, if the electric current accessing the secondary circuit of acquisition chip ACS712 is forward current, then can arrange reference signal is voltage 2.6V, wherein, this reference signal is provided with the range of error of+0.1V.
Preferably, the reference signal that comparable chip receives can be produced by reference circuit, and multiple comparable chip 20 can corresponding multiple reference circuits.Preferably, multiple comparable chip 20 include the first comparable chip and the second comparable chip, multiple reference circuits include the first reference circuit and the second reference circuit, first reference circuit and the first comparable chip are connected, second reference circuit and the second comparable chip are connected, and are respectively used to provide the first reference signal for the first comparable chip and provide the second reference signal for the second comparable chip.
Multiple cue circuits 30 are connected with multiple comparable chip 20 respectively, are used for pointing out multiple comparative result.Each comparable chip connects a cue circuit, for pointing out the comparative result of the comparable chip being connected with cue circuit.Cue circuit can pass through to show word or light, or points out comparative result by the mode of audio alarm.Preferably, it is possible to adopt multiple display that multiple comparative results are displayed.In this electrical system, the action supervisory circuit of secondary circuit can also include multiple holding circuit and multiple reset circuit.Holding circuit is used for keeping display display comparative result, and reset circuit is for being reset to original state by the display of display, for instance, display is light emitting diode, and default conditions are the states extinguished, then reset circuit is for extinguishing light emitting diode.Preferably, multiple cue circuits 30 include multiple light emitting diode, are connected with multiple comparable chip 20 respectively, and each light emitting diode connects a comparable chip, for lighting according to the low and high level of comparable chip output or extinguish.Holding circuit can adopt one-way SCR element, specifically, one-way SCR can be connected with the output of light emitting diode and comparable chip, when there being action current in secondary circuit, comparable chip is output as high level, high level triggers one-way SCR switched-on light emitting diodes, light emitting diode is made to light
Preferably, multiple display include the first display and second display, and the first display and the first comparable chip are connected, and are used for showing that the first comparative result, second display and the second comparable chip are connected, are used for showing the second comparative result.First holding circuit is connected with the first display, is used for keeping the first display to show the first comparative result, and the second holding circuit is connected with second display, is used for keeping second display to show the second comparative result.First reset circuit and the first display are connected, and are used for resetting the first display to original state, and the second reset circuit is connected with second display, and the second display that is used for resetting is to original state.
The action supervisory circuit of secondary circuit in the electrical system that this embodiment provides, by multiple acquisition chips 10, it is connected with multiple secondary circuits respectively, for the electric current in multiple secondary circuits is sampled, obtain multiple sampled signal, wherein, multiple sampled signals are the signal obtained of respectively electric current in multiple secondary circuits being sampled；Multiple comparable chip 20, are connected with multiple acquisition chips 10 respectively, are used for multiple sampled signals compared with reference signal, obtain multiple comparative result, wherein, judge whether multiple secondary circuit has action current by multiple comparative results；And multiple cue circuit 30, it is connected with multiple comparable chip 20 respectively, is used for pointing out multiple comparative result, solves in correlation technique, by multiple signal relays, the actuating signal of multiple secondary circuits is monitored the bigger problem that takes up room.Judge by adopting chip component that the electric current in secondary circuit is acquired whether secondary circuit has action current, and then reached save the space of supervisory circuit and reduce the effect of cost.
Fig. 2 is the schematic diagram of the action supervisory circuit of secondary circuit in electrical system according to a second embodiment of the present invention.This embodiment can as the preferred implementation of above-mentioned first embodiment, as shown in Figure 2, in this electrical system, the action supervisory circuit of secondary circuit includes the first acquisition chip 11, second acquisition chip 12, the 3rd acquisition chip 13, the 4th acquisition chip 14, four tunnel logic comparable chip 21, signal indicating circuit 31, reference circuit 40, keep and reset circuit 50 and electric power driving module 60.
In this electrical system, the action current in four secondary circuits at most can be monitored by the action supervisory circuit of secondary circuit.So that the action current in four secondary circuits is monitored, first acquisition chip 11, the second acquisition chip 12, the 3rd acquisition chip 13,4th acquisition chip 14 is connected with the circuit node in four secondary circuits respectively, for gathering the electric current in secondary circuit.First acquisition chip 11, the second acquisition chip 12, the 3rd acquisition chip 13, the 4th acquisition chip 14 is connected with four tunnel logic comparable chip 21, and signal indicating circuit 31 is connected with four tunnel logic comparable chip 21.Reference circuit 40 is connected with four tunnel logic comparable chip 21, keeps being connected with signal indicating circuit 31 with reset circuit 50.
First acquisition chip 11, the second acquisition chip 12, the 3rd acquisition chip 13, the 4th acquisition chip 14 can be ACS712 hell integrated sensor.First acquisition chip 11, second acquisition chip 12,3rd acquisition chip 13, the sampled signal that 4th acquisition chip 14 converts to after gathering electric current to four tunnel logic comparable chip 21 outputs, four tunnel logic comparable chip 21 receive the reference signal of reference circuit 40, sampled signal and reference signal being compared, output comparative result is to signal indicating circuit 31, and signal indicating circuit 31 can show comparative result.
Four tunnel logic comparable chip 21 can be four road voltage comparator LM339, and four road voltage comparator LM339 include 4 comparators, 4 comparators respectively with the first acquisition chip 11, the second acquisition chip 12, the 3rd acquisition chip 13, the 4th acquisition chip 14 is connected.Signal indicating circuit 31 can include 4 LED lights, is connected with 4 comparators respectively, and shows the comparative result of comparator.Such as, the electric current that second acquisition chip 12 collects through four tunnel logic comparable chip 21 relatively after to obtain comparative result be have action current in the secondary circuit that gathers of the second acquisition chip 12, then LED light corresponding to secondary circuit gathered with the second acquisition chip 12 in signal indicating circuit 31 is lighted.
Reference circuit 40 is for providing, for four tunnel logic comparable chip 21, the reference signal compared.Keep being used for keeping signal indicating circuit 31 to continue to export comparative result with reset circuit 50, display lamp corresponding after avoiding the action current in the secondary circuit having occurred and that action to disappear extinguishes, keep being additionally operable to reset when signal indicating circuit 31 is resetted by needs with reset circuit 50, make signal indicating circuit 31 recover the OFF state of acquiescence.
Electric power driving module 60 is for providing running voltage for whole circuit, electric power driving module 60 can be the single supply module of stable output 5V direct current (DC) voltage, side is connected with primary circuit, receive the voltage in primary circuit, direct current or exchange and different electric pressures can be selected as required, can be connected by the connected mode of contact pin between electric power driving module 60 with signal indicating circuit 31.
Fig. 3 is the schematic diagram of the action supervisory circuit of secondary circuit in electrical system according to a third embodiment of the present invention.This embodiment can as the preferred implementation of above-mentioned first embodiment, as shown in Figure 3, in this electrical system, the action supervisory circuit of secondary circuit includes four acquisition chip IC1～IC4, it is ACS712 hell integrated sensor, four comparator IC5a～IC5d are four road voltage comparator LM339, four road voltage comparator LM339 are an integrated chip, including four comparators.In this electrical system, the action supervisory circuit of secondary circuit also includes four display lamp LED1～LED4.
Four acquisition chip IC1～IC4 are ACS712 hell integrated sensor, the connected mode of Acquisition Circuit is identical, for acquisition chip IC1, IC1 includes 8 pins, two IP+ pins and two IP-pins are for gathering the electric current in secondary circuit, and wherein, input current is directional, directivity and the directional correlation being connected IP+ and IP-, have direction of action.Vcc pin connects the DC voltage of 5V, and Vcc pin connects ground connection after electric capacity C1, and VIout pin is for exporting the sampled signal after acquired conversion, and FILTER pin connects ground connection after electric capacity C2, GND pin ground connection.
The circuit connecting mode of four comparator IC5a～IC5d is also identical.For comparator IC5a, the in-phase input end of IC5a connects the VIout pin of IC1, the GND pin ground connection of IC5a, the Vcc pin of IC5a connects the DC voltage of 5V, the outfan of IC5a is connected with first end of resistance R3, it is connected with first end of resistance R4, the second end ground connection of resistance R3 and resistance R4, the outfan of IC5a is also connected with the negative pole of one-way SCR VT1, the positive pole of one-way SCR VT1 connects the negative pole of display lamp LED1, the positive pole of display lamp LED1 connects the DC voltage of 5V, reset switch FQ1 is attempted by the negative pole of one-way SCR VT1 and the positive pole of display lamp LED1.The inverting input of four comparator IC5a～IC5d connects first end of resistance R1, the DC voltage of the second termination 5V of resistance R1, first end of resistance R1 is connected with first end of resistance R2, and second end of resistance R2 connects the negative pole of diode VD1, the plus earth of VD1.
Preferably, in the electrical system of above-described embodiment in the action supervisory circuit of secondary circuit, electric capacity C1, electric capacity C3, electric capacity C5, electric capacity C7 electric capacity be 0.1 μ F, electric capacity C2, electric capacity C4, electric capacity C6, electric capacity C8 electric capacity be 1nF.The resistance of resistance R1 is 47K Ω, and the resistance of resistance R2 is 100 Ω, resistance R3, resistance R5, resistance R7, resistance R9 resistance be 100 Ω, resistance R4, resistance R6, resistance R8, resistance R10 resistance be 500 Ω.The conducting voltage of diode VD1 is 2.5V.The model of one-way SCR VT1～VT4 is MCR100-6.
The action current size in the loop according to monitoring selects corresponding chip component, corresponding power module is selected according to loop voltage, in the electrical system provide the present embodiment, the action supervisory circuit of secondary circuit concatenates the loop monitored into needs by electric current by direction, when there being action current to flow through, light emitting diode indicates the loop of corresponding generation action, resets after pressing reset switch.
Embodiments of the invention additionally provide a kind of terminal block.The action supervisory circuit that this terminal block is integrated with in the electrical system of the present invention secondary circuit, wherein, this terminal block is connected with the circuit node of multiple secondary circuits respectively.
Fig. 4 is terminal block according to a first embodiment of the present invention and the connection diagram of breaker control circuit in electrical system.As shown in Figure 4; the action supervisory circuit that terminal block 100 is integrated with in the electrical system of the embodiment of the present invention secondary circuit; there is multiple collection pin " in1 ", " in2 " and " in3 "; connect the node in multiple secondary circuits of breaker control circuit respectively, including the low-frequency load reduction node IP 3 of the protection act node IP 1 in protection act loop 201, the hand trip(ping) node IP 2 in hand trip(ping) loop 202 and low cycles unloading device 200 place secondary circuit.The output pin " out1 " of terminal block 100 is connected with the node OP1 of breaker control circuit.The node that protection act node IP 1, hand trip(ping) node IP 2, low-frequency load reduction node IP 3 and node OP1 are in former electrical system in breaker control circuit.
Fig. 5 is the connection diagram of terminal block according to a second embodiment of the present invention and electrical system mesolow converter on off control loop.As shown in Figure 5, the action supervisory circuit that terminal block 100 is integrated with in the electrical system of the embodiment of the present invention secondary circuit, there is multiple collection pin " in4 ", " in5 ", " in6 " and " in7 ", connect the node in multiple secondary circuits in low voltage frequency converter on off control loop respectively, including the button starter node IP7 of the button starter node IP4 of button starting-up later time 204, the relay starter node IP5 of relay starting-up later time 205, the DCS starter node IP6 of production control system (DCS) starting-up later time and button starting-up later time 207.The output pin " out2 " of terminal block 100 is connected with the node OP2 in low voltage frequency converter on off control loop.Button starter node IP4, relay starter node IP5, DCS starter node IP6, button start IP7 and node OP2 and are the node in former electrical system mesolow converter on off control loop.
In electrical system provided by the invention, the action supervisory circuit of secondary circuit can adopt modularized design, and adopt patch electronics element to make, circuit is simple and reliable, and profile can be fabricated to general terminal block, has cost low, volume is little, extension and versatility are good, and wiring is simple, and sensitivity is adjustable, action instruction is directly perceived, can directly replace the advantages such as terminal in primary circuit.
Obviously, those skilled in the art should be understood that, each module of the above-mentioned present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or it is distributed on the network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, can be stored in storage device is performed by calculation element, or they are fabricated to respectively each integrated circuit modules, or the multiple modules in them or step are fabricated to single integrated circuit module realize.So, the present invention is not restricted to the combination of any specific hardware and software.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (11)
1. the action supervisory circuit of secondary circuit in an electrical system, it is characterised in that including:
Multiple acquisition chips, it is connected with multiple secondary circuits respectively, for the electric current in the plurality of secondary circuit is sampled, obtains multiple sampled signal, wherein, the plurality of sampled signal is the signal obtained of respectively electric current in the plurality of secondary circuit being sampled；
Multiple comparable chip, are connected with the plurality of acquisition chip respectively, are used for the plurality of sampled signal compared with reference signal, obtain multiple comparative result, wherein, judge whether the plurality of secondary circuit has action current by the plurality of comparative result；And
Multiple cue circuits, are connected with the plurality of comparable chip respectively, are used for pointing out the plurality of comparative result.
2. the action supervisory circuit of secondary circuit in electrical system according to claim 1, it is characterized in that, the plurality of secondary circuit includes the first secondary circuit and the second secondary circuit, the plurality of acquisition chip includes the first acquisition chip and the second acquisition chip, for the electric current gathered respectively in described first secondary circuit and described second secondary circuit and obtain the first sampled signal and the second sampled signal, described reference signal includes the first reference signal and the second reference signal, and the plurality of comparable chip includes:
First comparable chip, it is connected with described first acquisition chip, for described first sampled signal and described first reference signal being compared, obtains the first comparative result, wherein, judge whether described first secondary circuit has described action current by described first comparative result；And
Second comparable chip, it is connected with described second acquisition chip, for described second sampled signal and described second reference signal being compared, obtains the second comparative result, wherein, judge whether described second secondary circuit has described action current by described second comparative result.
3. the action supervisory circuit of secondary circuit in electrical system according to claim 2, it is characterised in that also include:
First reference circuit, is connected with described first comparable chip, is used for providing described first reference signal；And
Second reference circuit, is connected with described second comparable chip, is used for providing described second reference signal.
4. the action supervisory circuit of secondary circuit in electrical system according to claim 2, it is characterised in that the plurality of cue circuit includes:
First display, is connected with described first comparable chip, is used for showing described first comparative result；And
Second display, is connected with described second comparable chip, is used for showing described second comparative result.
5. the action supervisory circuit of secondary circuit in electrical system according to claim 4, it is characterised in that also include:
First holding circuit, is connected with described first display, is used for keeping the first comparative result described in described first display prompts；
Second holding circuit, is connected with described second display, is used for keeping described second display to point out described second comparative result；
First reset circuit, is connected with described first display, and described first display that is used for resetting is to original state；And
Second reset circuit, is connected with described second display, and the described second display that is used for resetting is to original state.
6. the action supervisory circuit of secondary circuit in electrical system according to claim 4, it is characterised in that the plurality of cue circuit includes multiple light emitting diode, is connected with the plurality of comparable chip respectively.
7. the action supervisory circuit of secondary circuit in electrical system according to claim 5, it is characterised in that described first holding circuit and described second holding circuit are one-way SCR.
8. the action supervisory circuit of secondary circuit in electrical system according to claim 1, it is characterized in that, in described electrical system, the action supervisory circuit of secondary circuit includes four road voltage comparator LM339, wherein, described four road voltage comparator LM339 include four comparable chip, are used at most four sampled signals compared with reference signal.
9. the action supervisory circuit of secondary circuit in electrical system according to claim 1, it is characterised in that in the plurality of acquisition chip, at least one acquisition chip is ACS712 hell integrated sensor.
10. the action supervisory circuit of secondary circuit in electrical system according to claim 1, it is characterised in that also include:
Electric power driving module, with the plurality of acquisition chip, the plurality of comparable chip is connected with the plurality of cue circuit, for providing running voltage for the plurality of acquisition chip, the plurality of comparable chip and the plurality of cue circuit.
11. a terminal block, it is characterised in that be integrated with the action supervisory circuit of secondary circuit in the electrical system according to any one of claim 1 to 10, wherein, described terminal block is connected with the circuit node of multiple secondary circuits respectively.
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| CN201610180402.3A CN105807162A (en) | 2016-03-25 | 2016-03-25 | Action monitoring circuit for secondary circuits in electrical system and terminal strip |
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| CN201610180402.3A CN105807162A (en) | 2016-03-25 | 2016-03-25 | Action monitoring circuit for secondary circuits in electrical system and terminal strip |
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