CN108181578A - A kind of detection circuit of switchgear, detection method and I/O control - Google Patents
A kind of detection circuit of switchgear, detection method and I/O control Download PDFInfo
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- CN108181578A CN108181578A CN201711459304.4A CN201711459304A CN108181578A CN 108181578 A CN108181578 A CN 108181578A CN 201711459304 A CN201711459304 A CN 201711459304A CN 108181578 A CN108181578 A CN 108181578A
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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
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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Abstract
The embodiment of the invention discloses a kind of detection circuit of switchgear, detection method and I/O controls, detection circuit includes signal conversion module, its first changing over signal inputs is as first switch signal incoming end, and the second changing over signal inputs is as second switch signal incoming end；Power module, the first power supply signal output terminal and the first changing over signal inputs, second source signal output end are electrically connected with third switching signal incoming end；Detection module, when first and second switching signal incoming end accesses first kind switchgear, according to the on off state for the detection signal detection first kind switchgear that the first and second conversion signal output terminals export；Or when second accesses Second Type switchgear with third switching signal incoming end, according to the on off state for the detection signal detection Second Type switchgear that the first and second conversion signal output terminals export.By technical scheme of the present invention, the compatibility and versatility of the detection circuit of switchgear are enhanced.
Description
Technical field
The present embodiments relate to switching equipment technology more particularly to a kind of detection circuit of switchgear, detections
Method and I/O control.
Background technology
It is particularly important for the control of field device real-time status with the progress of industry 4.0, most of scene feelings
Condition is mostly opened using the information state of the signal form feedback device of digital switch quantity, such as device power state, partial function
State is opened, the sense state of optoelectronic switch can be acquired by digital switch quantity.
The bottom digital signal in industrial field data gatherer process has dry contact signal, wet contact signal and crystalline substance at present
Body pipe type switch signal, corresponding switchgear are dry contact, wet contact and transistor type switch equipment, at present on the market
Most of detection devices are only applicable to the mode of connection of one or two kinds of switching signals, can not be compatible with a variety of switchgears simultaneously
The mode of connection needs the detection device of several different models so that detection device versatility for the detection of points several in equipment
It is poor with compatibility, increase the difficulty of field operation implementation.
Invention content
In view of this, an embodiment of the present invention provides a kind of detection circuit of switchgear, detection method and I/O control,
It is realized using a kind of detection circuit of switchgear and first kind switchgear and Second Type switchgear is switched
The detection of state enhances the compatibility and versatility of the detection circuit of switchgear, greatly reduces the switch of switchgear
The difficulty and cost of state-detection.
In a first aspect, an embodiment of the present invention provides a kind of detection circuit of switchgear, including：
Signal conversion module, it is defeated including the first changing over signal inputs, the second changing over signal inputs, the first conversion signal
Outlet and the second conversion signal output terminal, first switch signal of first changing over signal inputs as the detection circuit
Incoming end, second switch signal incoming end of second changing over signal inputs as the detection circuit；
Power module, the power module includes the first power supply signal output terminal and second source signal output end, described
First power supply signal output terminal is electrically connected with first changing over signal inputs, the second source signal output end with it is described
The third switching signal incoming end electrical connection of detection circuit；
Detection module, the detection module includes first detection signal input terminal and the second detection signal input part, described
First detection signal input terminal is electrically connected with the first conversion signal output terminal, it is described second detection signal input part with it is described
Second conversion signal output terminal is electrically connected；
The detection module is used to access in the first switch signal incoming end and the second switch signal incoming end
During first kind switchgear, according to the first conversion signal output terminal and the inspection of the second conversion signal output terminal output
Survey the on off state of first kind switchgear described in signal detection；Or in the second switch signal incoming end and institute
When stating third switching signal incoming end access Second Type switchgear, according to the first conversion signal output terminal and described the
The on off state of Second Type switchgear described in the detection signal detection of two conversion signal output terminals output.
Further, the first kind switchgear is wet contact or transistor type switch equipment；
When the first kind switchgear is transistor type switch equipment, the transistor type switch equipment includes control
End processed, first end and second end, the first end and second end of the transistor type switch equipment are believed respectively with the first switch
Number incoming end and second switch signal incoming end electrical connection.
Further, the Second Type switchgear is dry contact.
Further, the second source signal output end of the power module is opened as the third of the detection circuit
OFF signal incoming end.
Further, the detection circuit further includes：
Power isolation module, the power isolation module includes the first isolation signals input terminal, the second isolation signals input
End, the first isolation signals output terminal and the second isolation signals output terminal, the first isolation signals input terminal and the described first electricity
Source signal output terminal is electrically connected, and the second isolation signals input terminal is electrically connected with the second source signal output end；
The power isolation module inputs for adjusting the first isolation signals input terminal with second isolation signals
It holds the size of the power supply signal of input and exports to the first isolation signals output terminal and the second isolation signals output terminal,
And signal and first isolation signals of the first isolation signals output terminal with the second isolation signals output terminal output
Input terminal is coupled with the power supply signal that the second isolation signals input terminal inputs；
The first power supply signal output terminal passes through the power isolation module and first changing over signal inputs electricity
Connection, third switching signal incoming end of the second isolation signals output terminal as the detection circuit.
Further, the power isolation module is coupling transformer.
Further, the signal conversion module includes light emitting diode and switching transistor, the light emitting diode
First changing over signal inputs of the anode as the signal conversion module, the cathode of the light emitting diode is as the signal
Second changing over signal inputs of modular converter；
The switching transistor includes control terminal, first end and second end, and the first end of the switching transistor is as institute
The first conversion signal output terminal of signal conversion module is stated, the second end of the switching transistor is as the signal conversion module
The second conversion signal output terminal.
Further, the second conversion signal output terminal of the signal conversion module is electrically connected with ground terminal, the signal
First conversion signal output terminal of modular converter is exported by first power supply signal of impedor and the power module
End electrical connection.
Second aspect, the embodiment of the present invention additionally provide a kind of detection circuit of switchgear as described in relation to the first aspect
Detection method, including：
Access first switch signal incoming end and the detection circuit of the first kind switchgear to the detection circuit
The second switch signal incoming end；
It is exported according to the first conversion signal output terminal of the detection module and the second conversion signal output terminal
Detection signal detection described in first kind switchgear on off state；
Alternatively,
Access first switch signal incoming end and the detection circuit of the Second Type switchgear to the detection circuit
The second switch signal incoming end；
It is exported according to the first conversion signal output terminal of the detection module and the second conversion signal output terminal
Detection signal detection described in Second Type switchgear on off state.
The third aspect, the embodiment of the present invention additionally provide a kind of I/O control, including the switchgear described in first aspect
Detection circuit.
Further, the I/O control is long-range I/O control.
By the way that detection circuit is set to include there are three switching signal incoming end, detection module can examined the embodiment of the present invention
The first switch signal incoming end of slowdown monitoring circuit and the second switch signal incoming end access first kind switchgear of detection circuit
When, the detection signal detection first kind switch exported according to the first conversion signal output terminal and the second conversion signal output terminal is set
Standby on off state can connect in the second switch signal incoming end of detection circuit and the third switching signal of detection circuit
When entering to terminate into Second Type switchgear, according to the first conversion signal output terminal and the inspection of the second conversion signal output terminal output
The on off state of signal detection Second Type switchgear is surveyed, is realized using a kind of detection circuit of switching devices to first
The detection of type of switch equipment and Second Type switchgear on off state enhances the compatibility of the detection circuit of switchgear
Property and versatility, greatly reduce switchgear on off state detection difficulty and cost.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
Have technology describe needed in attached drawing do one and simply introduce, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments, for those of ordinary skill in the art, without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of structure diagram of the detection circuit for switchgear that the embodiment of the present invention one provides；
Fig. 2 is a kind of structure diagram of the detection circuit of switchgear provided by Embodiment 2 of the present invention；
Fig. 3 is a kind of flow signal of the detection method of the detection circuit for switchgear that the embodiment of the present invention three provides
Figure；
Fig. 4 is the flow signal for the detection method of the detection circuit of another switchgear that the embodiment of the present invention three provides
Figure.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limitation of the invention.It also should be noted that in order to just
Part related to the present invention rather than entire infrastructure are illustrated only in description, attached drawing.
Embodiment one
Fig. 1 is a kind of structure diagram of the detection circuit for switchgear that the embodiment of the present invention one provides.Such as Fig. 1 institutes
Show, the detection circuit of switchgear includes signal conversion module 1, power module 2 and detection module 3, and signal conversion module 1 is wrapped
Include the first changing over signal inputs A1, the second changing over signal inputs A2, the conversion letters of the first conversion signal output terminal B1 and second
Number output terminal B2, power module 2 include the first power supply signal output terminal C1 and second source signal output end C2, detection module 3
Including the detection signal input part D2 of first detection signal input terminal D1 and second, the first detection signal input terminal of detection module 3
D1 is electrically connected with the first conversion signal output terminal B1 of signal conversion module 1, the second detection signal input part D2 of detection module 3
It is electrically connected with the second conversion signal output terminal B2 of signal conversion module 1.
The detection circuit of switchgear includes first switch signal incoming end I1, second switch signal incoming end I2 and third
Switching signal incoming end I3, the first changing over signal inputs A1 of signal conversion module 1 believe as the first switch of detection circuit
Number incoming end I1, the second changing over signal inputs A2 of signal conversion module 1 are accessed as the second switch signal of detection circuit
I2, the second source signal output end C2 of power module 2 is held to be electrically connected with the third switching signal incoming end I3 of detection circuit.
Detection module 3 can access the first kind in first switch signal incoming end I1 and second switch signal incoming end I2
During switchgear, the detection signal detection that is exported according to the first conversion signal output terminal B1 and the second conversion signal output terminal B2 the
The on off state of one type switchgear is accessed in second switch signal incoming end I2 and third switching signal incoming end I3
During Second Type switchgear, believed according to the detection that the first conversion signal output terminal B1 and the second conversion signal output terminal B2 is exported
Number detection Second Type switchgear on off state.
Illustratively, as shown in Figure 1, the second source signal output end C2 of power module 2 can be as detection circuit
Third switching signal incoming end I3, signal conversion module 1 can include light emitting diode 11 and switching transistor 12, light-emitting diodes
First changing over signal inputs A1s of the anode E1 of pipe 11 as signal conversion module 1, the cathode E2 conducts of light emitting diode 11
Second changing over signal inputs A2 of signal conversion module 1.Switching transistor 12 include control terminal (not shown), first end F1 and
The the first conversion signal output terminal B1 of second end F2, the first end F1 of switching transistor 12 as signal conversion module 1, switch are brilliant
Second conversion signal output terminal B2s of the second end F2 of body pipe 12 as signal conversion module 1.
Optionally, as shown in Figure 1, the second conversion signal output terminal B2 of signal conversion module 1 can be with ground terminal GND electricity
Connection, the first conversion signal output terminal B1 of signal conversion module 1 can pass through impedor R1 and the first electricity of power module 2
Source signal output terminal C1 is electrically connected.
Illustratively, first kind switchgear can be wet contact, switchgear of the wet contact for active type, therefore nothing
Power module 2 is needed to provide power supply signal to wet contact, it, can be with as shown in Figure 1, when the on off state for wet contact is tested
Wet contact is respectively connected to the first switch signal incoming end I1 of detection circuit and second switch signal incoming end I2, is detected at this time
The third switching signal incoming end I3 of circuit, which can hang, to be connect.
It is wet during less than or equal to 30V when wet contact is in the conduction state, such as when wet contact access voltage is more than or equal to 10V
Contact forms closed circuit with the light emitting diode 11 in signal conversion module 1, and light emitting diode 11 shines, signal conversion module
In the light irradiation sent out by light emitting diode 11, first end F1 is connected switching transistor 12 in 1 with second end F2, by
It is electrically connected in the second conversion signal output terminal B2 of signal conversion module 1 with ground terminal GND, first turn of signal conversion module 1
Signal output end B1 is changed by impedor R1 and the first power supply signal output terminal C1 of power module 2, power supply mould can be set
The level of the power supply signal of the first power supply signal output terminal C1 outputs of block 2 is high level, then the first of signal conversion module 1 turn
Change signal output end B1 output signals level be grounded end GND earth signal drag down.When wet contact is off state, such as
When wet contact access voltage is more than or equal to 0V, during less than or equal to 3V, wet contact and the light emitting diode 11 in signal conversion module 1
Closed circuit can not be formed, light emitting diode 11 does not shine, the first end F1 of the switching transistor 12 in signal conversion module 1 and
Second end F2 is not connected, then the level of the first conversion signal output terminal B1 output signals of signal conversion module 1 is by power module 2
The power supply signal of the first power supply signal output terminal C1 draw high.Therefore, when the first detection signal input terminal D1 of detection module 3 is defeated
When the level value for entering signal is low level, it is possible to determine that wet contact is in the conduction state, when the first detection signal of detection module 3
When the level value of input terminal D1 input signals is high level, it is possible to determine that wet contact is off state, realizes to wet contact
The detection of on off state.Illustratively, the first power supply signal output terminal C1 of power module 2 is converted by diode D and signal
The first changing over signal inputs A1 electrical connections of module 1, avoid the overtension of first switch signal incoming end I1 from damaging switch
The power module 2 of the detection circuit of equipment.
Illustratively, first kind switchgear can be transistor type switch equipment, such as can be NPN transistor type
Switchgear or PNP transistor type switchgear, as shown in Figure 1, being surveyed for the on off state of transistor type switch equipment
During examination, transistor type switch equipment includes control terminal, first end and second end, can be by the first end of transistor type switch equipment
It is electrically connected with the first switch signal incoming end I1 of detection circuit, by the second end of transistor type switch equipment and detection circuit
Second switch signal incoming end I2 is electrically connected, and the third switching signal incoming end I3 of detection circuit, which can hang, at this time connects.
When transistor type switch equipment is in the conduction state, such as when transistor type switch equipment access voltage is more than or equal to
3V, during less than or equal to 30V, transistor type switch equipment forms closed circuit with the light emitting diode 11 in signal conversion module 1,
With reference to the testing principle of above-mentioned wet contact on off state, the first conversion signal output terminal B1 output signals of signal conversion module 1
Level be grounded end GND earth signal drag down.When transistor type switch equipment is off state, such as when transistor-type is opened
It closes equipment access voltage and is more than or equal to 0V, during less than or equal to 1V, transistor type switch equipment and shining in signal conversion module 1
Diode 11 can not form closed circuit, with reference to the testing principle of above-mentioned wet contact on off state, the first of signal conversion module 1
The level of conversion signal output terminal B1 output signals is drawn by the power supply signal of the first power supply signal output terminal C1 of power module 2
It is high.Therefore, when the level value of the first detection signal input terminal D1 input signals of detection module 3 is low level, it is possible to determine that
Transistor type switch equipment is in the conduction state, when the level of the first detection signal input terminal D1 input signals of detection module 3
When being worth for high level, it is possible to determine that transistor type switch equipment is off state, realizes and transistor type switch equipment is opened
The detection of off status.
Illustratively, Second Type switchgear can be dry contact, and dry contact is the switchgear of passive, needs electricity
Source module 2 provides power supply signal to dry contact, as shown in Figure 1, when the on off state for dry contact is tested, can will do
Contact is respectively connected to the second switch signal incoming end I2 of detection circuit and third switching signal incoming end I3, at this time detection circuit
First switch signal incoming end I1 can hang and connect.
When dry contact is in the conduction state, the first power supply signal output terminal C1 of power module 2 is via signal modulus of conversion
The second source signal output end C2 of light emitting diode 11 and dry contact to power module 2 in block 1 forms closed circuit, ginseng
According to the testing principle of above-mentioned wet contact on off state, the first conversion signal output terminal B1 output signals of signal conversion module 1
The earth signal that level is grounded end GND drags down.When dry contact is off state, the first power supply signal of power module 2 is defeated
Outlet C1 is defeated via the second source signal of the light emitting diode 11 in signal conversion module 1 and dry contact to power module 2
Outlet C2 can not form closed circuit, with reference to the testing principle of above-mentioned wet contact on off state, first turn of signal conversion module 1
The level for changing signal output end B1 output signals is drawn high by the power supply signal of the first power supply signal output terminal C1 of power module 2.
Therefore, when the level value of the first detection signal input terminal D1 input signals of detection module 3 is low level, it is possible to determine that stem grafting
Point is in the conduction state, can when the level value of the first detection signal input terminal D1 input signals of detection module 3 is high level
To judge that dry contact is off state, the detection to dry contact on off state is realized.
It should be noted that the high level and low level in above-described embodiment are relative concept, the embodiment of the present invention pair
High level is not construed as limiting with low level specific level value.
It is further to note that the signal conversion module 1 that Fig. 1 is provided is brilliant to include light emitting diode 11 and switch
A kind of signal conversion module 1 for the photoelectrical coupler of body pipe 12, if using other classes well known to those skilled in the art
The signal conversion module 1 of type is replaced, and is all belonged to the scope of protection of the present invention.
When signal conversion module 1 is had using what light emitting diode 11 similar to Figure 1 and switching transistor 12 were formed
During the module of buffer action so that the first changing over signal inputs A1 of signal conversion module 1 and the second changing over signal inputs
The signal of A2 inputs and the signal of the first conversion signal output terminal B1 and the second conversion signal output terminal B2 outputs are coupled relation,
There is mutation electric signal damage detection module in the switchgear for avoiding the switching signal incoming end access of detection circuit, improve
The antijamming capability of the detection circuit of switchgear.
The technical solution of the embodiment of the present invention, by the way that detection circuit is set to include, there are three switching signal incoming end, detections
Module can be in the first switch signal incoming end of detection circuit and the second switch signal incoming end access first of detection circuit
During type of switch equipment, the detection signal detection that is exported according to the first conversion signal output terminal and the second conversion signal output terminal the
The on off state of one type switchgear or can detection circuit second switch signal incoming end and detection circuit
It is defeated according to the first conversion signal output terminal and the second conversion signal when three switching signal incoming ends access Second Type switchgear
Outlet output detection signal detection Second Type switchgear on off state, be using a kind of detection circuit of switching devices
The detection to first kind switchgear and Second Type switchgear on off state is realized, enhances the inspection of switchgear
The compatibility and versatility of slowdown monitoring circuit greatly reduce the difficulty and cost of the on off state detection of switchgear.
Embodiment two
On the basis of above-described embodiment, Fig. 2 is a kind of detection circuit of switchgear provided by Embodiment 2 of the present invention
Structure diagram, on the basis of structure detection circuit shown in Fig. 1, as shown in Fig. 2, detection circuit further includes isolated from power mould
Block 4, it is defeated that power isolation module 4 includes the first isolation signals input terminal G1, the second isolation signals input terminal G2, the first isolation signals
Outlet H1 and the second isolation signals output terminal H2, the first isolation signals input terminal G1 are electrically connected with the first power supply signal output terminal C1
It connects, the second isolation signals input terminal G2 is electrically connected with second source signal output end C2.
What power isolation module 4 inputted for adjusting the first isolation signals input terminal G1 and the second isolation signals input terminal G2
The size of power supply signal is simultaneously exported to the first isolation signals output terminal H1 and the second isolation signals output terminal H2, and the first isolation letter
Letter is isolated with the first isolation signals input terminal G1 with second with the signal that the second isolation signals output terminal H2 is exported in number output terminal H1
The power supply signal coupling of number input terminal G2 input.
Illustratively, coupling transformer may be used in power isolation module 4, i.e., is formed, passed through using two groups of coupling coils
Setting to wire circle is realized and the power supply of the first isolation signals input terminal G1 and the second isolation signals input terminal G2 inputs is believed
The regulatory function of number size, and realize the first isolation signals output terminal H1 and the second isolation signals output terminal H2 outputs signal and
The power supply signal of first isolation signals input terminal G1 and the second isolation signals input terminal G2 inputs is coupled relation, and indirect electricity
Connection.Illustratively, power isolation module 4 for example can be by the electricity of the first power supply signal output terminal C1 of power module 2 and second
The power supply signal of the 5V of source signal output terminal C2 outputs is converted to the signal of 9V and passes through the first isolation signals output terminal H1 and the
Two isolation signals output terminal H2 are exported.
First power supply signal output terminal C1 is electrically connected by power isolation module 4 with the first changing over signal inputs A1, the
Third switching signal incoming end I3s of the two isolation signals output terminal H2 as detection circuit.
Illustratively, as shown in Fig. 2, when the on off state for wet contact is tested, wet contact can be connect respectively
Enter the first switch signal incoming end I1 of detection circuit and second switch signal incoming end I2, at this time the third switch of detection circuit
Signal incoming end I3, which can hang, to be connect.For the detection electricity of switchgear shown in the testing principle and Fig. 1 of the on off state of wet contact
Road is identical to the testing principle of the on off state of wet contact, is equally when the first detection signal input terminal D1 of detection module 3 is defeated
When the level value for entering signal is low level, judgement wet contact is in the conduction state, when the first detection signal of detection module 3 inputs
When the level value of D1 input signals being held to be high level, judgement wet contact is off state, realizes to wet contact on off state
Detection.
It illustratively, can will be brilliant as shown in Fig. 2, when the on off state for transistor type switch equipment is tested
The first end of body pipe type switch equipment is electrically connected with the first switch signal incoming end I1 of detection circuit, and transistor type switch is set
Standby second end is electrically connected with the second switch signal incoming end I2 of detection circuit, and the third switching signal of detection circuit connects at this time
Enter to hold I3 can hang to connect.For the inspection of switchgear shown in the testing principle and Fig. 1 of the on off state of transistor type switch equipment
Slowdown monitoring circuit is identical to the testing principle of the on off state of transistor type switch equipment, is equally the first detection when detection module 3
When the level value of signal input part D1 input signals is low level, judgement transistor type switch equipment is in the conduction state, works as inspection
When the level value for surveying the first detection signal input terminal D1 input signals of module 3 is high level, transistor type switch equipment is judged
State is off, realizes the detection to transistor type switch facility switching state.
Illustratively, as shown in Fig. 2, when the on off state for dry contact is tested, dry contact can be connect respectively
Enter the second switch signal incoming end I2 of detection circuit and third switching signal incoming end I3, at this time the first switch of detection circuit
Signal incoming end I1, which can hang, to be connect.
When dry contact is in the conduction state, the first power supply signal output terminal C1 of power module 2 is via isolated from power mould
First isolation signals input terminal G1 of block 4, the first isolation signals output terminal H1, the light emitting diode 11 in signal conversion module 1,
The second isolation signals output terminal H2, the second isolation signals input terminal G2 to power module 2 of dry contact, power isolation module 4
Second source signal output end C2 forms closed circuit, with reference to the testing principle of above-mentioned wet contact on off state, signal modulus of conversion
The earth signal that the level of first conversion signal output terminal B1 output signals of block 1 is grounded end GND drags down.It is closed when dry contact is in
During disconnected state, the first power supply signal output terminal C1 of power module 2 via power isolation module 4 the first isolation signals input terminal
G1, the first isolation signals output terminal H1, the light emitting diode 11 in signal conversion module 1, dry contact, power isolation module 4
Second isolation signals output terminal H2, the second isolation signals input terminal G2 to power module 2 second source signal output end C2 without
Method forms closed circuit, and with reference to the testing principle of above-mentioned wet contact on off state, the first conversion signal of signal conversion module 1 is defeated
The level of outlet B1 output signals is drawn high by the power supply signal of the first power supply signal output terminal C1 of power module 2.Therefore, work as inspection
When the level value for surveying the first detection signal input terminal D1 input signals of module 3 is low level, it is possible to determine that dry contact is in and leads
Logical state, when the level value of the first detection signal input terminal D1 input signals of detection module 3 is high level, it is possible to determine that dry
Contact is in off state, realizes the detection to dry contact on off state.
It also needs to illustrate, the high level and low level in above-described embodiment two are relative concept, and the present invention is real
Example is applied to be not construed as limiting high level and low level specific level value.
The technical solution of the embodiment of the present invention, by adding power isolation module, setting power isolation module can be adjusted
The size of the power supply signal that first isolation signals input terminal is inputted with the second isolation signals input terminal simultaneously exports to first letter is isolated
Number output terminal and the second isolation signals output terminal, and the first isolation signals output terminal and the letter of the second isolation signals output terminal output
Number it is coupled relation with the power supply signal that the first isolation signals input terminal and the second isolation signals input terminal input, avoids power supply
There is mutation electric signal damage in the power supply signal of the first power supply signal output terminal and second source the signal output end output of module
Remaining electronic component in the detection circuit of bad switchgear improves the antijamming capability of the detection circuit of switchgear.
Embodiment three
On the basis of above-described embodiment, Fig. 3 is a kind of detection circuit for switchgear that the embodiment of the present invention three provides
Detection method flow diagram, this method, which can be applied, to be needed to examine the on off state of first kind switchgear
The scene of survey can be performed by the detection circuit of switchgear that above-described embodiment provides, as shown in figure 3, for the first kind
The detection method of switchgear includes：
The of S110, the first switch signal incoming end of access first kind switchgear to detection circuit and detection circuit
Two switching signal incoming ends.
Illustratively, first kind switchgear can be wet contact, as depicted in figs. 1 and 2, for the switch of wet contact
When state is tested, wet contact can be respectively connected to the first switch signal incoming end I1 of detection circuit and second switch letter
Number incoming end I2, the third switching signal incoming end I3 of detection circuit, which can hang, at this time connects.First kind node can also be brilliant
Body pipe type switch equipment, such as can be NPN transistor type switchgear or PNP transistor type switchgear, such as Fig. 1 and Fig. 2
It is shown, it, can be by the first end of transistor type switch equipment when being tested for the on off state of transistor type switch equipment
It is electrically connected with the first switch signal incoming end I1 of detection circuit, by the second end of transistor type switch equipment and detection circuit
Second switch signal incoming end I2 is electrically connected, and the third switching signal incoming end I3 of detection circuit, which can hang, at this time connects.
S120, the detection exported according to the first conversion signal output terminal of detection module and the second conversion signal output terminal are believed
Number detection first kind switchgear on off state.
As depicted in figs. 1 and 2, with reference to the description of the above-mentioned testing principle to first kind switchgear, when detection module 3
First detection signal input terminal D1 input signals level value be low level when, it is possible to determine that first kind switchgear is in
Conducting state, when the level value of the first detection signal input terminal D1 input signals of detection module 3 is high level, it is possible to determine that
First kind switchgear is off state, realizes the detection of the on off state to first kind switchgear.
On the basis of above-described embodiment, Fig. 4 is the detection electricity for another switchgear that the embodiment of the present invention three provides
The flow diagram of the detection method on road, this method, which can be applied, is needing the on off state progress to Second Type switchgear
The scene of detection can be performed by the detection circuit of switchgear that above-described embodiment provides, as shown in figure 4, for the second class
The detection method of type switchgear includes：
The of S210, the first switch signal incoming end of access Second Type switchgear to detection circuit and detection circuit
Two switching signal incoming ends.
Illustratively, Second Type switchgear can be dry contact, as depicted in figs. 1 and 2, for the switch of dry contact
When state is tested, dry contact can be respectively connected to the second switch signal incoming end I2 of detection circuit and third switch letter
Number incoming end I3, the first switch signal incoming end I1 of detection circuit, which can hang, at this time connects.
S220, the detection exported according to the first conversion signal output terminal of detection module and the second conversion signal output terminal are believed
Number detection Second Type switchgear on off state.
As depicted in figs. 1 and 2, with reference to the description of the above-mentioned testing principle to Second Type switchgear, when detection module 3
First detection signal input terminal D1 input signals level value be low level when, it is possible to determine that Second Type switchgear is in
Conducting state, when the level value of the first detection signal input terminal D1 input signals of detection module 3 is high level, it is possible to determine that
Second Type switchgear is off state, realizes the detection of the on off state to Second Type switchgear.
The embodiment of the present invention by access first kind switchgear to detection circuit first switch signal incoming end and
The second switch signal incoming end of detection circuit, it is defeated according to the first conversion signal output terminal of detection module and the second conversion signal
The on off state of the detection signal detection first kind switchgear of outlet output；Alternatively, access Second Type switchgear is extremely
The first switch signal incoming end of detection circuit and the second switch signal incoming end of detection circuit, according to the first of detection module
The switch shape of conversion signal output terminal and the detection signal detection Second Type switchgear of the second conversion signal output terminal output
State realizes the inspection of the on off state to first kind switchgear and Second Type switchgear using a detection circuit
It surveys, enhances the compatibility and versatility of the detection circuit of switchgear, greatly reduce the on off state detection of switchgear
Difficulty and cost.
The embodiment of the present invention additionally provides a kind of I/O control, can include the inspection for the switchgear that above-described embodiment provides
Slowdown monitoring circuit can also perform the detection method of the detection circuit for the switchgear that above-described embodiment is provided, therefore I/O control
Has the advantageous effect of the detection circuit of above-mentioned switchgear, which is not described herein again.Illustratively, I/O control can be long-range
I/O control.
Note that it above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The present invention is not limited to specific embodiment described here, can carry out for a person skilled in the art various apparent variations,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above example to the present invention
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
It can include other more equivalent embodiments, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
1. a kind of detection circuit of switchgear, which is characterized in that including：
Signal conversion module, including the first changing over signal inputs, the second changing over signal inputs, the first conversion signal output terminal
With the second conversion signal output terminal, first changing over signal inputs is accessed as the first switch signal of the detection circuit
End, second switch signal incoming end of second changing over signal inputs as the detection circuit；
Power module, the power module include the first power supply signal output terminal and second source signal output end, described first
Power supply signal output terminal is electrically connected with first changing over signal inputs, the second source signal output end and the detection
The third switching signal incoming end electrical connection of circuit；
Detection module, the detection module include first detection signal input terminal and second detection signal input part, described first
Detection signal input part is electrically connected with the first conversion signal output terminal, the second detection signal input part and described second
Conversion signal output terminal is electrically connected；
The detection module is used to access first in the first switch signal incoming end and the second switch signal incoming end
During type of switch equipment, believed according to the detection that the first conversion signal output terminal and the second conversion signal output terminal export
The on off state of number detection first kind switchgear；Or in the second switch signal incoming end and described the
When three switching signal incoming ends access Second Type switchgear, according to the first conversion signal output terminal and second turn described
Change the on off state of Second Type switchgear described in the detection signal detection of signal output end output.
2. detection circuit according to claim 1, which is characterized in that the first kind switchgear is wet contact or crystalline substance
Body pipe type switch equipment；
When the first kind switchgear is transistor type switch equipment, the transistor type switch equipment includes control
End, first end and second end, the first end and second end of the transistor type switch equipment respectively with the first switch signal
Incoming end and second switch signal incoming end electrical connection.
3. detection circuit according to claim 1, which is characterized in that the Second Type switchgear is dry contact.
4. detection circuit according to claim 1, which is characterized in that the second source signal of the power module is defeated
Third switching signal incoming end of the outlet as the detection circuit.
5. detection circuit according to claim 1, which is characterized in that further include：
Power isolation module, the power isolation module include the first isolation signals input terminal, the second isolation signals input terminal, the
One isolation signals output terminal and the second isolation signals output terminal, the first isolation signals input terminal and first power supply signal
Output terminal is electrically connected, and the second isolation signals input terminal is electrically connected with the second source signal output end；
The power isolation module is used to adjust the first isolation signals input terminal and the second isolation signals input terminal is defeated
The size of the power supply signal entered is simultaneously exported to the first isolation signals output terminal and the second isolation signals output terminal, and institute
It states the first isolation signals output terminal and the signal of the second isolation signals output terminal output is inputted with first isolation signals
The power supply signal inputted with the second isolation signals input terminal is held to couple；
The first power supply signal output terminal is electrically connected by the power isolation module with first changing over signal inputs,
Third switching signal incoming end of the second isolation signals output terminal as the detection circuit.
6. detection circuit according to claim 5, which is characterized in that the power isolation module is coupling transformer.
7. detection circuit according to claim 1, which is characterized in that the signal conversion module include light emitting diode and
Switching transistor, the first changing over signal inputs of the anode of the light emitting diode as the signal conversion module are described
Second changing over signal inputs of the cathode of light emitting diode as the signal conversion module；
The switching transistor includes control terminal, first end and second end, and the first end of the switching transistor is as the letter
First conversion signal output terminal of number modular converter, the second end of the switching transistor as the signal conversion module
Two conversion signal output terminals.
8. detection circuit according to claim 7, which is characterized in that the second conversion signal of the signal conversion module is defeated
Outlet is electrically connected with ground terminal, and the first conversion signal output terminal of the signal conversion module passes through impedor and the power supply
The first power supply signal output terminal electrical connection of module.
9. a kind of detection method of the detection circuit as described in claim any one of 1-8, which is characterized in that including：
First kind switchgear is accessed to the first switch signal incoming end of the detection circuit and the institute of the detection circuit
State second switch signal incoming end；
The inspection exported according to the first conversion signal output terminal of the detection module and the second conversion signal output terminal
Survey the on off state of first kind switchgear described in signal detection；
Alternatively,
Second Type switchgear is accessed to the first switch signal incoming end of the detection circuit and the institute of the detection circuit
State second switch signal incoming end；
The inspection exported according to the first conversion signal output terminal of the detection module and the second conversion signal output terminal
Survey the on off state of Second Type switchgear described in signal detection.
10. a kind of I/O control, which is characterized in that include the detection circuit of claim 1-8 any one of them switchgears.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711459304.4A CN108181578A (en) | 2017-12-28 | 2017-12-28 | A kind of detection circuit of switchgear, detection method and I/O control |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711459304.4A CN108181578A (en) | 2017-12-28 | 2017-12-28 | A kind of detection circuit of switchgear, detection method and I/O control |
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| CN108181578A true CN108181578A (en) | 2018-06-19 |
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| CN201711459304.4A Pending CN108181578A (en) | 2017-12-28 | 2017-12-28 | A kind of detection circuit of switchgear, detection method and I/O control |
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| CN110009898A (en) * | 2019-04-29 | 2019-07-12 | 深圳市嘉昱机电有限公司 | A kind of infrared receiving device and infrared receiving system |
| CN110907735A (en) * | 2019-12-08 | 2020-03-24 | 国网河南省电力公司洛阳供电公司 | Modular primary equipment simulation system |
| CN111061660A (en) * | 2019-12-31 | 2020-04-24 | 浙江中控技术股份有限公司 | Calibration equipment and system for input/output (I/O) module |
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| CN105277771A (en) * | 2014-07-15 | 2016-01-27 | Ls产电株式会社 | Fault current detecting circuit |
| CN205787996U (en) * | 2016-05-25 | 2016-12-07 | 河北白晶环境科技有限公司 | A kind of On-off signal output module |
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| CN110009898A (en) * | 2019-04-29 | 2019-07-12 | 深圳市嘉昱机电有限公司 | A kind of infrared receiving device and infrared receiving system |
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| CN110907735A (en) * | 2019-12-08 | 2020-03-24 | 国网河南省电力公司洛阳供电公司 | Modular primary equipment simulation system |
| CN111061660A (en) * | 2019-12-31 | 2020-04-24 | 浙江中控技术股份有限公司 | Calibration equipment and system for input/output (I/O) module |
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Application publication date: 20180619 |