CN105759234A - Four-channel output device suitable for multifunctional calibration source - Google Patents
Four-channel output device suitable for multifunctional calibration source Download PDFInfo
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- CN105759234A CN105759234A CN201610231178.6A CN201610231178A CN105759234A CN 105759234 A CN105759234 A CN 105759234A CN 201610231178 A CN201610231178 A CN 201610231178A CN 105759234 A CN105759234 A CN 105759234A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
A four-channel output device suitable for a multifunctional calibration source comprises ports A and B used for input of the multifunctional calibration source, a second channel switch K1, a third channel switch K2, a fourth channel switch K3, relays K4-K21, a rotation switch, a polarity switch, and red and black jacks of a first channel, a second channel, a third channel and a fourth channel. The relays K4, K5, and K12-K21 are in a conversion type. When the power is off, contact 3 and 5 are connected, and when the power is on, contacts 3 and 4 are connected. The relays K6-K11 are in a dynamic closing type. According to the invention, the shifts of the rotation switch and the states of the second channel switch, the third channel switch and the fourth channel switch are set, any two, three or four channels including the first channel are enabled to simultaneously output any one parameter from direct and alternating voltages and direct and alternating currents, the detection of corresponding parameters of four digital mutimeters at most can be completed at the same time, and the detection efficiency is greatly improved; the number of jacks is reduced, the time of wire plugging is shortened, and the detection efficiency is also improved; in addition, the usage is convenient, and the operation is simple.
Description
Technical field
The present invention relates to a kind of four-way output device being applicable to multi-functional calibration source, belong to instrument detection technique field.
Background technology
Digital multimeter is the Common Instrument of detection electrical quantity signal, and Main Function is to measure combined-voltage, ac and dc current and electricity
The value of resistance, to guarantee to meet the use requirement of equipment.Generally every piece handheld digital multimeter comprises five parameters, each parameter
5-6 range, according to JJG315-83 " DC digital voltmeter ", JJG598-89 " direct-flow digital ammeter ", JJG724-1991
" DC digital formula ohmmeter ", JJG34 (space flight)-1999 " AC digital voltmeter ", JJG35 (space flight)-1999 " hand over
Streaming digital ammeter " etc. five vertification regulations it is examined and determine, the most completely one piece of handheld digital multimeter of calibrating needs 2 hours.
Calibrating for digital multimeter is typically with multi-functional calibration source apparatus, will multi-functional calibration source apparatus output signal input
Digital multimeter is examined and determine.On the other hand, due to digital multimeter mostly without communication interface, it is impossible to by computer program-control, nothing
Method realizes automatic gauge, therefore needs to expend a large amount of human resources and examines and determine.And existing multi-functional calibration source is the most only on market
Having an output port, this makes no matter examine and determine a how many piece table and is required for carrying out successively.Therefore, calibrating polylith table will consume in a large number
Time.
Summary of the invention
It is an object of the invention to provide a kind of four-way output device being applicable to multi-functional calibration source, to improve the inspection of digital multimeter
Determine efficiency.
This device realizes the series and parallel pattern of four passages by arranging containing voltage, electric current, the rotary switch of three projects of resistance
Conversion；Combined-voltage and the output of ac and dc current multiple combination pattern of four passages is realized by arranging three channel switch；
The dipole inversion of DC voltage and DC current is realized by arranging polarity switch.
Therefore, technical scheme includes:
The port A and port B of multi-functional calibration source input, two channel switch K1, triple channel switch K2, four-way switch K3 are many
Individual relay is K4-K21 respectively, rotary switch 3, polarity switch 4, and passage jack red, black 5,6, two passages are red, black
Jack 7,8, triple channel jack red, black 9,10, four-way jack red, black 11,12；
Described calibration source input port A, B can by cable connect multi-functional calibration source combined-voltage, ac and dc current and
The output of resistance；
Described K4, K5, K12～K21 is conversion hysteria relay, and during no power, contact 3-5 connects, and energising back contact 3-4 connects；
Described K6-K11 is dynamic circuit connector type relay；
Two described channel switch K1 have two states of switching, and when being in " leading to ", K6, K7, K12 receive control signal, contact
3-4 connects；When being in " breaking ", K6, K7, K12 are in the normal state.Described triple channel switch K2 has two states of switching,
When being in " leading to ", K8, K9, K13 receive control signal, and contact 3-4 connects；When being in " breaking ", K8, K9, K13 are in
Normality.Described four-way switch K3 has two states of switching, and when being in " leading to ", K10, K11, K14 receive control signal,
Contact 3-4 connects；When being in " breaking ", K10, K11, K14 are in the normal state.
Described rotary switch has voltage, electric current, three gears of resistance, K15～K21 when being in " voltage " or " resistance " gear
Being in the normal state, when being in " electric current " gear, the contact 3-4 of K15～K21 connects energising.
Described polarity switch has positive and negative two gears, and when being in " just " gear, K4, K5 are in the most too；It is in " bearing " gear
Time K4, K5 receive control signal, contact 4-5 connects.
Each described jack red, black is the electronic component for being connected with tested digital multimeter, is originally applicable to multi-functional calibration source
Four-way output device also include blocking, each described jack red, black blocks with blocking when not working.
(1) output resistance detects jack to digital multimeter
Described change-over switch switches to resistance gear, and polarity switch is in the normal state；Remaining two to four-way switch equal position of K1-K3
In normality；Conversion hysteria relay K 15-K21 is normality, and contact 3-5 is connected；
Multi-functional calibration source resistance signal exports to port A, port B, and tested digital multimeter 1 accesses passage jack red, black；
Port A is connected with the red jack of a passage through the 5-3 contact of K4；Port B is connected with the black jack of a passage through the 5-3 contact of K5；
Input port A, the resistance signal of port B only export to tested digital multimeter from the jack red, black of a passage；
(2) output voltage detects jack to digital multimeter
2.1) a passage output voltage is only used
Described change-over switch switches to voltage gear, and polarity switch is in the normal state；Remaining two to four-way switch equal position of K1-K3
In normality；Conversion hysteria relay K 15-K21 is normality, and contact 3-5 is connected；
Multi-functional calibration source voltage signal exports to port A, port B, and tested digital multimeter 1 accesses passage jack red, black；
Port A is connected with the red jack of a passage through the 5-3 contact of K4；Port B is through the 5-3 contact of K5, the 5-3 contact of K15 and a passage
Black jack be connected；Input port A, the voltage signal of port B are exported to tested digital multimeter by the jack red, black of a passage；
2.2) two passage output voltages are only used
Described change-over switch switches to voltage gear, and polarity switch is in the normal state；Two described channel switch K1 switch to logical state
Time, K6, K7 receive control signal；Multi-functional calibration source voltage signal exports to port A, port B, and tested digital multimeter connects
Enter two passages jack red, black；Port A is through 5-3 contact, the 3-4 contact of K6, the 5-3 contact of K16 and the red jack of two passages of K4
Being connected, port B is connected with the black jack 8 of two passages through the 5-3 contact of K5, the 3-4 contact of K7, the 5-3 contact of K17；Input port
A, the voltage signal of port B are exported to tested digital multimeter by the jack red, black of two passages；
2.3) triple channel output voltage is only used
Described change-over switch switches to voltage gear, and polarity switch is in the normal state；Described triple channel switch K2 switches to logical state
Time, K8, K9 receive control signal；Multi-functional calibration source voltage signal exports to port A, port B, and tested digital multimeter connects
Enter triple channel jack red, black；Port A is through 5-3 contact, the 3-4 contact of K8, the 5-3 contact of K18 and the three-channel red jack of K4
Being connected, port B is connected with three-channel black jack through the 5-3 contact of K5, the 3-4 contact of K9, the 5-3 contact of K19；Input port
A, the voltage signal of port B are exported to tested digital multimeter by three-channel jack red, black；
2.4) four-way output voltage is only used
Described change-over switch switches to voltage gear, and polarity switch is in the normal state；Described four-way switch K3 switches to logical state
Time, K10, K11 receive control signal；Multi-functional calibration source voltage signal exports to port A, port B, tested digital multimeter
Access four-way jack red, black；Port A inserts through the red of 5-3 contact, the 3-4 contact of K10, the 5-3 contact of K20 and four-way of K4
Hole is connected, and port B is connected with the black jack of four-way through the 5-3 contact of K5, the 3-4 contact of K11, the 5-3 contact of K21；Input
Mouth A, the voltage signal of port B are exported to tested digital multimeter by the jack red, black of four-way；
By the state of epi-position switch K1, K2, K3 described in conversion, can make to be in the passage of logical state and a passage is in parallel,
And then can realize from comprising any two of a passage, three and four passage output voltage signals simultaneously；
2.5) dipole inversion of DC voltage is realized by polarity switch
Described change-over switch switches to voltage gear, and described polarity switch is cut and gone to negative state, and K4, K5 receive control signal；
Port B is connected with a red jack of passage through the 5-3 contact of K4；Port A is connected with a black jack of passage through the 5-3 contact of K5；Lead to through one
The DC voltage polarity of road jack red, black output is contrary with the DC voltage polarity of input port A, port B；
In like manner, when switch K1, K2, K3 conversion of two to four-way is to logical state, port B and the red jack of two passages, triple channel are red
The red jack of jack, four-way is connected；Port A and the black jack of two passages, the black jack of triple channel, the black jack of four-way are connected；Through two
Passage jack red, black, triple channel jack red, black, DC voltage polarity and the input port A of the output of four-way jack red, black,
The DC voltage polarity of port B is contrary；
(3) output electric current detects jack to digital multimeter
Can be from comprising any two of a passage, three and four passage output current signals simultaneously
3.1) a passage output electric current is only used
Change-over switch switches to electric current gear, and polarity switch is in the normal state；Remaining two to four-way switch K1-K3 is respectively positioned on normality,
Now conversion hysteria relay K 15-K21 receives control signal；
Multi-functional calibration source current signal exports to port A, port B, and tested digital multimeter accesses passage jack red, black；End
Mouth A is connected with the red jack of a passage through the 5-3 contact of K4；Port B is through the 5-3 contact of K5, the 5-3 contact of K15 and a passage
Black jack is connected；Input port A, the current signal of port B are exported to tested digital multimeter by the jack red, black of a passage；
3.2) the two tested digital multimeters of channel measurement are used
By any one conversion in described tri-epi-position switches of K1, K2, K3 to logical state, it is possible to from comprising a passage
Two passage output current signals: three epi-position switch K2 conversions as will be described receive control signal to logical state, K8, K9, K13,
Port A is connected with the red jack of a passage through the 5-3 contact of K4；The black jack B of one passage touches through the 3-4 contact of K15, the 3-5 of K12
Point, the 4-3 contact of K18 are connected with three-channel red jack；The black jack of triple channel is through the 3-5 contact of K19, the 3-5 contact of K14, K5
3-5 contact be connected with port B；Three sections of circuit series connection, input port A, the voltage signal of port B are inserted by the red, black of a passage
Hole and the output of three-channel jack red, black；
3.3) from three the passage output electric currents comprising a passage
By any two conversion in described tri-epi-position switches of K1, K2, K3 to logical state, it is possible to from comprising a passage
Three passage output current signals: two epi-positions switch K1 as will be described, four epi-positions switch K3 conversions to logical states, K6, K7,
K10, K11, K12, K14 receive control signal.Port A is connected with the red jack of a passage through the 5-3 contact of K4；One passage is black
Jack is connected with the red jack of two passages through the 3-4 contact of K15, the 4-3 contact of K16；The black jack of two passages through K17 3-4 contact,
The 3-5 contact of K13, the 4-3 contact of K20 are connected with the red jack of four-way；The black jack of four-way is through the 3-4 contact of K21, the 3-5 of K5
Contact is connected with port B；The series connection of four sections of circuits, input port A, port B current signal by the red-black jack of a passage, two
The red-black jack of passage, the red-black jack output of four-way；
In like manner, during by two described epi-positions K1, three epi-position switch K2 or the switch K3 any two conversion of four epi-positions to logical state, defeated
Inbound port 1, the current signal of port 2 are exported by two groups of jacks red, black of a passage and corresponding logical stator channel；
3.4) from four the passage output electric currents comprising a passage
By described tri-epi-position switch all conversions of K1, K2, K3 to logical state, it is possible to export electric current letter from four passages simultaneously
Number: by two described epi-position switch K1, three epi-position switch K2, four epi-position switch K3 conversions to logical state, K6-K14 receives control
Signal.Port A is connected with the red jack of a passage through the 5-3 contact of K4；The black jack of one passage is through the 3-4 contact of K15, K16
4-3 contact is connected with the red jack of two passages；The black jack of two passages is red with three-channel through the 4-3 contact of the 3-4 contact of K17, K18
Jack is connected；Three-channel black jack is connected with the red jack of four-way through the 3-4 contact of K19, the 4-3 contact of K20；Four-way is black
Jack is connected with port 2 through the 3-4 contact of K21, the 3-5 contact of K5；Five sections of circuit series connection, input port A, the electric current letter of port B
Number exported by the red-black jack of a passage, the red-black jack of two passages, three-channel red-black jack, the red-black jack of four-way；
3.5) dipole inversion of DC current is realized by polarity switch
Described change-over switch switches to electric current gear, and described polarity switch is cut and gone to negative state, and K4, K5 receive control signal；
When only by a passage output electric current, port A is through the 4-3 contact of K5, the 5-3 contact of K14, the 5-3 contact of K13, the 5-3 of K12
Contact, the 4-3 contact of K15 are connected with the black jack of a passage；The red jack of one passage is connected with port B through the 3-4 contact of K4；Warp
The DC current signal polarity of one passage jack red, black output and input port A, the DC current opposite polarity of port B；
In like manner, when epi-position switch K1, K2, K3 conversion is to logical state, the DC current of jack red through respective channel, black output
Polarity also with input port 1, the DC current opposite polarity of port 2.
(4) the one integrated output resistances of passage, voltage, electric current
Described change-over switch switches to resistance, voltage, electric current gear successively, and rest switch is respectively positioned on normality.Port A passes through
The 5-3 contact of K4 is connected with the red jack of a passage；Port B is connected with the black jack of a passage through the 5-3 contact of K5；Input port A,
The resistance of port B, voltage, current signal are exported by the jack red, black of a passage；
The beneficial effect of the invention is:
The present invention, by arranging gear and two passages, triple channel, the state of four-way switch of rotary switch 3, can make to comprise one
Any in interior any two, three and four passages simultaneously output AC/DC voltage, four parameters of ac and dc current of passage
One parameter, at most can complete the calibrating of 4 digital multimeter correspondence parameters, it is possible to calibrating efficiency is greatly improved simultaneously.
Meanwhile, resistance output is fixed on a passage, combined-voltage, ac and dc current, resistance five can be realized at a passage
The integrated output of parameter；Two passages, triple channel, four-way realize combined-voltage, ac and dc current quadrinomial parameter integrated defeated
Go out, decrease output plughole quantity, the reduction plug line time, improve calibrating efficiency equally.
This module is easy to use, simple to operate.
Accompanying drawing explanation
The general structure schematic diagram of Fig. 1 present invention.
Fig. 2 rear board of the present invention appearance schematic diagram.
Fig. 3 front panel of the present invention appearance schematic diagram.
Wherein, 1, port A, 2, port B, 3, rotary switch, 4, polarity switch, 5, the one red jack of passage, 6, one passage
Black jack, 7, the two red jacks of passage, 8, the two black jacks of passage, 9, the red jack of triple channel, 10, the black jack of triple channel, 11, four
The red jack of passage, 12, the black jack of four-way.
Detailed description of the invention
As Figure 1-3,1, a kind of four-way output device being applicable to multi-functional calibration source, it is characterised in that including: for even
Meet the port A (1) and port B (2) of standard source signal, for selecting to detect the rotary switch (3) of type, be used for selecting directly
Stream voltage and the polarity switch (4) of DC current polarity, dynamic circuit connector type relay K 6-K11, conversion hysteria relay K 4, K5, K12-K21,
And digital multimeter detects jack and channel selector switch；
Described digital multimeter detection jack includes: passage jack red, black (5,6), two passages jack red, black (7,8),
Triple channel jack red, black (9,10), four-way jack red, black (11,12),
Described channel selector switch includes: two channel switch K1, triple channel switch K2, four-way switch K3；
Described dynamic circuit connector type relay has four contacts, contact 1,2 to be used for receiving 12V control signal, is normal when without control signal
The contact 3,4 of state disconnects, and transfers contact 3-4 upon receiving the control signal to and connects；
Described conversion hysteria relay switches between two-way output according to control signal, and conversion hysteria relay has five contacts,
Contact 1,2 is used for receiving 12V control signal, is that the contact 3-5 of normality connects, turns upon receiving the control signal when without control signal
Connect for contact 3-4；
Its middle port A (1), port B (2) jack (5,6) red with a passage, black respectively is corresponding；And port A (1)
And it is provided with between K4, port B (2) and the black jack of a passage 6 between a red jack of passage 5 and is provided with K5, K15；
Described polarity switch (4) has positive and negative two gears, is just positioned at during normality；When being in negative gear, conversion hysteria relay
The contact 1,2 of K4, K5 receives the 12V control signal that polarity switch (4) sends, and contact 3-4 connects, completing port A (1),
DC voltage or the positive-negative polarity of DC current that port B (2) is exported are changed；
Described two channel switch K1 have two states of switching, are in disconnected during normality；When two channel switch K1 are in " breaking ", relay
Device K6, K7, K12 are in the normal state, and when being in " leading to ", the contact 1,2 of K6, K7, K12 receives control signal；Two passages are opened
Close K1 to be realized relay K 6, the control of K7, K12 by switching two states, make input port A (1), port B (2)
Standard source signal exported by two passages jack red, black (7,8)；
In like manner, described triple channel switch K2 has two states of switching, is in disconnected during normality；When triple channel switch K2 is in " breaking ",
Relay K 8, K9, K13 are in the normal state, and when being in " leading to ", relay K 8, the contact 1,2 of K9, K13 receive control signal；
Triple channel switch K2 by switching two states realize to relay K 8, the control of K9, K13, make input port A (1),
The standard source signal of port B (2) is exported by triple channel jack red, black (9,10)；
In like manner, described four-way switch K3 has two states of switching, is in disconnected during normality；When four-way switch K3 is in " breaking ",
Relay K 10, K11, K14 are in the normal state；When being in " leading to ", relay K 10, the contact 1,2 of K11, K14 receive control
Signal；Four-way switch K3 realizes being controlled relay K 10, K11, K14 by switching two states, makes input port
A (1), the standard source signal of port B (2) are exported by the jack red, black (11,12) of four-way；
Conversion hysteria relay K 15-K21 is controlled by described rotary switch (3), to realize passage jack red, black (5,6) and two
Passage jack red, black (7,8), triple channel jack red, black (9,10), between four-way jack red, black (11,12)
Series-parallel conversion；
Described rotary switch (3) has resistance, voltage, three gears of electric current, when being positioned at resistance gear, conversion hysteria relay
K15-K21 is normality, and input port A (1), the resistance signal of port B (2) pass through the jack red, black (5,6) of a passage
Output；When being positioned at voltage gear, conversion hysteria relay K 15-K21 is also normality, by controlling the break-make of channel switch K1 K3
State, makes to be in those passages of " leading to " state and a passage jack is in parallel, and then input port A (1), port B (2)
Voltage signal is exported by those passages being in " leading to " state；When being positioned at electric current gear, conversion hysteria relay K 15-K21
Contact 1,2 receives control signal, and contact 3-4 connects；By controlling the on off operating mode of channel switch K1 K3, make to be in " leading to "
Those passages of state and passage jack series connection, and then the current signal of input port A (1), port B (2) is by those
Passage in " leading to " state exports.
Described a kind of four-way output device being applicable to multi-functional calibration source, it is characterised in that:
(1) output resistance detects jack to digital multimeter
Described change-over switch (3) switches to resistance gear；Polarity switch (4), channel switch K1-K3 are normality；Conversion hysteria
Relay K 4-K5, dynamic circuit connector type relay K 6-K11, conversion hysteria relay K 12-K14 are normality；
Exporting multi-functional calibration source resistance signal to port A (1), port B (2), tested digital multimeter 1 accesses a passage
Jack red, black (5,6)；Resistance signal is through port A (1), the 5-3 contact of K4, the red jack of a passage (5), digital versatile
The black jack of table 1, passage (6), the 3-5 contact of K15, the 3-5 contact of K5 flow into port B (2), form closed-loop path；Defeated
Inbound port A (1), the resistance signal of port B (2) thus by passage jack red, black (5,6) export to digital multimeter
1；
(2) output voltage detects jack to digital multimeter
Described change-over switch (3) switches to voltage gear；Polarity switch (4) is normality；By multi-functional calibration source voltage signal
Export to port A (1), port B (2)；
2.1) only by a passage output voltage
Now channel switch K1-K3 is normality；Conversion hysteria relay K 4-K5, dynamic circuit connector type relay K 6-K11, conversion hysteria relay
K12-K21 is normality；Tested digital multimeter 1 is accessed passage jack red, black (5,6)；
Voltage signal through port A (1), the 5-3 contact of K4, the red jack of a passage (5), the black jack of digital multimeter 1, passage (6),
The 3-5 contact of K15, the 3-5 contact of K5 flow into port B (2), form closed-loop path one；So that input port A (1), end
The voltage signal of mouth B (2) is able to jack red by a passage, black (5,6) and exports to digital multimeter 1；
2.2) only by two passage output voltages
Two described channel switch K1 switch to logical state, so that K6 with K7 contact 3-4 connects, K12 contact 3-4 connects；Will be by
Inspection digital multimeter 2 accesses two passages jack red, black (7,8)；
Voltage signal through port A (1), the 5-3 contact of K4, the 3-4 contact of K6, the 5-3 contact of K16, the red jack of two passage (7),
The black jack of digital multimeter 2, two passage (8), the 3-5 contact of K17, the 4-3 contact of K7, the 3-5 contact of K5 flow into port B (2),
Formation is closed and loop two；So that the voltage signal of input port A (1), port B (2) is able to be inserted by the red, black of two passages
Hole (7,8) exports to digital multimeter 2；
2.3) only by triple channel output voltage
With 2.2) situation in like manner, described triple channel switch K2 switches to logical state, so that K8 with K9 contact 3-4 connects, K13
Contact 3-4 connects；Tested digital multimeter 3 is accessed triple channel jack red, black (9,10)；
Voltage signal through port A (1), the 5-3 contact of K4, the 3-4 contact of K8, the 5-3 contact of K18, the red jack of triple channel (9),
Digital multimeter 3, triple channel black jack (10), the 3-5 contact of K19, the 4-3 contact of K9, the 3-5 contact of K5 flow into port B (2),
Form closed-loop path three；So that the voltage signal of input port A (1), port B (2) is able to by three-channel red, black slotting
Hole (9,10) exports to digital multimeter 3；
2.4) only by four-way output voltage
With 2.2), 2.3) situation in like manner, when described four-way switch K3 switches to logical state, so that K10 and K11 contact
3-4 connects, and K14 contact 3-4 connects；Digital multimeter 4 is accessed four-way jack red, black (11,12)；
Voltage signal through port A (1), the 5-3 contact of K4, the 3-4 contact of K10, the 5-3 contact of K20, the red jack of four-way (11),
Digital multimeter 4, four-way black jack (12), the 3-5 contact of K21, the 4-3 contact of K11, the 3-5 contact of K5 flow into port B
(2), closed-loop path four is formed；So that the voltage signal of input port A (1), port B (2) is able to by four-way
Jack red, black (11,12) exports to digital multimeter 4；
2.5) by comprising any two of a passage, three passage output voltages simultaneously or the most defeated by four passages
Go out voltage
Digital multimeter 1-4 is respectively connected to passage jack red, black (5,6), two passages jack red, black (7,8), threeway
Road jack red, black (9,10), four-way jack red, black (11,12)；
Channel switch K1 is logical, then concurrently form 2.1) in closed-loop path one and 2.2) in closed-loop path two；Channel switch K2
Be logical, then concurrently form 2.1) in closed-loop path one and 2.3) in closed-loop path three；Channel switch K3 is logical, then shape while
Become 2.1) in closed-loop path one and 2.4) in closed-loop path four；
Channel switch K1, K2 are logical, then concurrently form 2.1) in closed-loop path one and 2.2) in closed-loop path two and 2.3)
In closed-loop path three；Channel switch K1, K3 are logical, then concurrently form 2.1) in closed-loop path one and 2.2) in Guan Bi return
Road two and 2.4) in closed-loop path four；Channel switch K2, K3 are logical, then concurrently form 2.1) in closed-loop path one and 2.3)
In closed-loop path three and 2.4) in closed-loop path four；
Channel switch K1, K2, K3 are logical, then concurrently form 2.1) in closed-loop path one, 2.2) in closed-loop path two,
2.3) closed-loop path in three and 2.4) in closed-loop path four；
2.6) by a passage, and by two, three, any two passage in four-way or three passages output voltages simultaneously
Digital multimeter 2-4 is respectively connected to two passages jack red, black (7,8), triple channel jack red, black (9,10), four-way
Jack red, black (11,12)；
Channel switch K1, K2 are logical, then concurrently form 2.2) in closed-loop path two and 2.3) in closed-loop path three；Passage
Switch K1, K3 are logical, then concurrently form 2.2) in closed-loop path two and 2.4) in closed-loop path four；Channel switch K2,
K3 is logical, then concurrently form 2.3) in closed-loop path three and 2.4) in closed-loop path four；
Channel switch K1, K2, K3 are logical, then concurrently form 2.2) in closed-loop path two, 2.3) in closed-loop path three and 2.4)
In closed-loop path four；
2.7) dipole inversion of DC voltage is realized by polarity switch (4)
When described polarity switch (4) is normality, K4, K5 contact 3-5 connects, and port A (1), port B (2) are to numeral
The situation the most above-mentioned 2.1 of multimeter detection jack output voltage signal)-2.6)；I.e. port A (1) is red with each through K4 contact 5-3
Jack is connected, and port B (2) is connected with each black jack through K5 contact 5-3；
When described polarity switch (4) switches to negative state, and K4, K5 contact 3-4 connects, port A (1) through K5 contact 4-3 with each
Individual black jack is connected, and port B (2) is connected with each red jack through K4 contact 4-3, thus by polarity switch (4) and
K4, K5 achieve the dipole inversion of output voltage signal；
(3) digital multimeter detection jack is outputed current to
Described change-over switch 3 switches to electric current gear, and polarity switch 4 is normality, and conversion hysteria relay K 15-K21 contact 3-4 connects,
By multi-functional calibration source current signal output to port A (1), port B (2)；
3.1) only by a passage output electric current
Now channel switch K1-K3 is normality；Conversion hysteria relay K 4-K5, dynamic circuit connector type relay K 6-K11, conversion hysteria relay
K12-K14 is normality；Tested digital multimeter 1 is accessed passage jack red, black (5,6)；
Current signal through port A (1), the 5-3 contact of K4, the red jack of a passage (5), digital multimeter 1, passage are black inserts
Hole (6), the 3-4 contact of K15, the 3-5 contact of K12, the 3-5 contact of K13, the 3-5 contact of K14, the 3-5 contact of K5 flow into end
Mouth B (2), forms closed-loop path；So that the current signal of input port A (1), port B (2) is able to by a passage
Jack red, black (5,6) export to digital multimeter 1；
3.2) export electric current by one, 2 two passages simultaneously
Digital multimeter 1,2 is respectively connected to passage jack red, black (5,6), two passages jack red, black (7,8), logical
Road switch K1 is logical；So that K6 with K7 contact 3-4 connects, K12 contact 3-4 connects；
Current signal is through port A (1), K4 contact 5-3, the red jack of a passage (5), digital multimeter 1, the black jack of passage
(6), K15 contact 3-4, K16 contact 4-3, the red jack of two passage (7), the black jack of digital multimeter 2, two passage (8),
3-5, K5 contact, 3-5, K14 contact, 3-4, K13 contact, K17 contact 3-5 flows into port B (2), forms closed-loop path；So that
Input port A (1), port B (2) current signal in series successively by the jack red, black (5,6) of a passage,
Two passages jack red, black (7,8) export to digital multimeter 1,2；
3.3) export electric current by one, 3 two passages simultaneously
Digital multimeter 1,3 is respectively connected to passage jack red, black (5,6), triple channel jack red, black (9,10), logical
Road switch K2 is logical；So that K8 with K9 contact 3-4 connects, K13 contact 3-4 connects；
Current signal is through port A (1), K4 contact 5-3, the red jack of a passage (5), digital multimeter 1, the black jack of passage
(6), 3-5, K18 contact, K15 contact 3-4, K12 contact 4-3, the red jack of triple channel (9), digital multimeter 3, triple channel
Black jack (10), 3-4, K14 contact, K19 contact 3-5, K5 contact 3-5 flow into port B (2), form closed-loop path；Thus
Make input port A (1), port B (2) current signal in series successively by the jack red, black (5,6) of a passage,
Triple channel jack red, black (9,10) exports to digital multimeter 1,3；
3.4) export electric current by one, 4 two passages simultaneously
Digital multimeter 1,4 is respectively connected to passage jack red, black (5,6), four-way jack red, black (11,12),
Channel switch K3 is logical；So that K10 with K11 contact 3-4 connects, K14 contact 3-4 connects；
Current signal through port A (1), K4 contact 5-3, the red jack of a passage (5), digital multimeter 1, the black jack of passage 6,
The 4-3 contact of 3-5, K13 contact, 3-4, K12 contact, K15 contact 3-5, K20, the red jack of four-way (11), digital multimeter 4,
The black jack of four-way (12), 3-4, K5 contact, K21 contact 3-5 flow into port B (2), form closed-loop path；So that input
Port A (1), port B (2) current signal in series successively by the jack red, black (5,6) of a passage, four
Passage jack red, black (11,12) exports to digital multimeter 1,4；
3.5) by one, two, triple channel export electric current simultaneously
Digital multimeter 1,2,3 is respectively connected to passage jack red, black (5,6), two passages jack red, black (7,8),
Triple channel jack red, black (9,10), channel switch K1, K2 are logical；So that K6-K9 contact 3-4 connects, K12, K13
Contact 3-4 connects；
Current signal is through port A (1), K4 contact 5-3, a red jack of passage 5, digital multimeter 1, the black jack of passage 6, K15
3-4, K16 contact, contact 4-3, the two red jacks of passage 7, digital multimeter 2, the two black jack of passage 8, K17 contact 3-4, K18 touch
Point 4-3, the red jack of triple channel 9, digital multimeter 3, the black jack of triple channel 10,3-5, K5 contact, 3-4, K14 contact, K19 contact
3-5 flows into port B (2), forms closed-loop path；So that the current signal of input port A (1), port B (2) is with series connection
Mode successively by the jack red, black (5,6) of a passage, two passages jack red, black (7,8), triple channel is red, black inserts
Hole (9,10) exports to digital multimeter 1-3；
3.5) by one, two, four-way export electric current simultaneously
Digital multimeter 1,2,4 is respectively connected to passage jack red, black (5,6), two passages jack red, black (7,8),
Four-way jack red, black (11,12), channel switch K1, K3 are logical；So that K6, K7, K10, K11 contact 3-4 connects
Logical, K12, K14 contact 3-4 connects；
Current signal is through port A (1), K4 contact 5-3, the red jack of a passage (5), digital multimeter 1, the black jack of passage
(6), K15 contact 3-4, K16 contact 4-3, the red jack of two passage (7), the black jack of digital multimeter 2, two passage (8),
3-4, K13 contact, K17 contact 3-5, K20 contact 4-3, the red jack of four-way (11), digital multimeter 4, the black jack of four-way
(12), 3-4, K5 contact, K21 contact 3-5 flows into port B (2), formation closed-loop path；So that input port A (1),
The current signal of port B (2) priority in series is red, black slotting by the jack red, black (5,6) of a passage, two passages
Hole (7,8), four-way jack red, black (11,12) export to digital multimeter 1,2,4；
3.6) by one, three, four-way export electric current simultaneously
Digital multimeter 1,3,4 is respectively connected to passage jack red, black (5,6), triple channel jack red, black (9,10),
Four-way jack red, black (11,12), channel switch K2, K3 are logical；So that K8-K11 contact 3-4 connects, K13, K14
Contact 3-4 connects；
Current signal is through port A (1), K4 contact 5-3, the red jack of a passage (5), digital multimeter 1, the black jack of passage
(6), 3-5, K18 contact, K15 contact 3-4, K12 contact 4-3, the red jack of triple channel (9), digital multimeter 3, triple channel
Black jack (10), 3-4, K20 contact, K19 contact 4-3, the red jack of four-way (11), digital multimeter 4, four-way are black to be inserted
Hole (12), 3-4, K5 contact, K21 contact 3-5 flow into port B (2), form closed-loop path；So that input port A (1),
The current signal of port B (2) priority in series is red, black slotting by the jack red, black (5,6) of a passage, triple channel
Hole (9,10), four-way jack red, black (11,12) export to digital multimeter 1,3,4；
3.7) export electric current by one to four-way simultaneously
Digital multimeter 1-4 is respectively connected to passage jack red, black (5,6), two passages jack red, black (7,8), threeway
Road jack red, black (9,10), four-way jack red, black (11,12), channel switch K1-K3 is logical；So that K6-K11
Contact 3-4 connects, and K12, K14 contact 3-4 connects；
Current signal is through port A (1), K4 contact 5-3, the red jack of a passage (5), digital multimeter 1, the black jack of passage
(6), K15 contact 3-4, K16 contact 4-3, the red jack of two passage (7), the black jack of digital multimeter 2, two passage (8),
3-4, K18 contact, K17 contact 4-3, the red jack of triple channel (9), digital multimeter 3, the black jack of triple channel (10), K19 touch
Point 3-4, K20 contact 4-3, the red jack of four-way (11), digital multimeter 4, the black jack of four-way (12), K21 contact 3-4,
K5 contact 3-5 flows into port B (2), forms closed-loop path；So that input port A (1), the current signal of port B (2)
In series successively red by the jack red, black (5,6) of a passage, two passages jack red, black (7,8), triple channel,
Black jack (9,10), four-way jack red, black (11,12) export to digital multimeter 1-4；
3.8) dipole inversion of DC current is realized by polarity switch (4)
When described polarity switch (4) is normality, K4, K5 contact 3-5 connects, and port A (1), port B (2) are to numeral
The situation the most above-mentioned 3.1 of multimeter detection jack output current signal)-3.7)；I.e. port A (1) leads to one through the 5-3 contact of K4
The red jack 5 in road is connected, and port B (2) is in logical stator channel through the 5-3 contact of K5 with last in four black jacks
Black jack is connected；
When described polarity switch (4) switches to negative state, and K4, K5 contact 3-4 connects, and port B (2) exports through K5 contact 4-3
Signal, from 3.1)-3.7) describe, last in K5 contact 4-3 and four black jacks of port A (1) is in logical shape
The black jack of state passage is connected, and port B (2) is connected through K4 contact 4-3 and the red jack of a passage (5), thus passes through pole
Property switch (4) switching realize the conversion of current polarity.
Each described jack red, black is the electronic component for being connected with tested digital multimeter, is originally applicable to multi-functional calibration source
Four-way output device also include that multiple blocking, each described jack red, black block with blocking when not working.
Specific embodiment
As shown in Figure 1, Figure 2, Fig. 3, the present invention includes calibration source input port A, B, two channel switch K1, triple channel switch K2, four
Channel switch K3, relay K 4～K21, rotary switch 3, polarity switch 4, and red corresponding to four couples of four Measurement channel,
Black jack；
Described K4, K5 is capable of alternating voltage, the conversion of alternating current polarity.
Described K6, K7, K12 can control two channel signals with or without output；
Described K8, K9, K13 can control triple channel signal with or without output；
Described K10, K11, K14 can control four-way signal with or without output.
Described K15～K21 is capable of the conversion of four passage output parameters.
Default conditions: polarity switch 4 is in " just " state；Channel switch K1, K2, K3 are in " breaking " state；Rotary switch
3 are in voltage status；Dynamic circuit connector type relay K 6-K11 is in " breaking " state；Conversion hysteria relay K 12-K21 contact 3-5 connects.
The operating process that the present invention examines and determine digital multimeter is as follows:
(1) voltage parameter calibrating
By corresponding for the output of multi-functional calibration source voltage AM access module calibration source input port A, B, tested digital multimeter is connect 1 and enters one
Passage correspondence jack.
Now, voltage signal can along calibration source input port A, K4 contact 5-3, a red jack of passage 5, tested digital multimeter 1,
The one black jack of passage 6, the contact 3-5 of contact 3-5, K5 of K15, calibration source input port B form closed-loop path.
As examined and determine two digital multimeters, two passage correspondence jacks can be accessed by second.Two channel switch K1 are made to be in " leading to "
State, then (now, K12 contact 3-4 connects K6, K7 Guan Bi, but does not produce effect to measuring voltage, and produces measuring electric current
Effect).Now, voltage number can simultaneously along 3-4, K16 contact, 5-3, K6 contact, calibration source input port A, K4 contact 5-3, two
The red jack of passage 7, tested digital multimeter 2, the two black jack of passage 8,3-5, K7 contact, K17 contact 4-3, K5 contact 3-5, school
Quasi-source input port B forms closed-loop path.
In like manner, K1, K2, K3 any one be in the state of " leading to ", remaining state being in " breaking " just can realize two and lead to
Road output voltage signal；K1, K2, K3 any two is in the state of " leading to ", and another state being in " breaking " is the most permissible
Realize triple channel output voltage signal；K1, K2, K3 are in the state of " leading to " can realize the output of four-way voltage signal.
Corresponding tested digital multimeter gear adjusts calibration source voltage gear and requires output voltage signal according to vertification regulation, completes voltage ginseng
The calibrating of number.After end, disconnect calibration source output.
During calibrating negative voltage, polarity switch 4 can be made to be in the state of " bearing ", so that K4 contact 3-4 connects, K5 contact 3-4
Connect；Now the output signal of port A has led to four black jacks (i.e. jack 6,8,10,12), and the output signal of port B is led to
To four red jacks (i.e. jack 5,7,9,11), thus realize the conversion of positive-negative polarity.Calibration source is required according to vertification regulation
Output voltage signal, completes the negative sense calibrating of voltage parameter.
Disconnect the output of calibration source, K1, K2, K3 are in the state of " breaking ", polarity switch 4 is in again the state of " just ".
(2) current parameters calibrating
By corresponding for the output of multi-functional calibration source electric current AM access module calibration source input port A, B, tested digital multimeter 1 is accessed one
Passage correspondence jack.Rotary switch 3 goes to " electric current " gear, K15～K21 contact 3-4 is connected.
Now, current signal can along calibration source input port A, K4 contact 5-3, a red jack of passage 5, tested digital multimeter 1,
The one black jack of passage 6,3-5, K14 contact, 3-5, K13 contact, 3-4, K12 contact, K15 contact 3-5, K5 contact 3-5, calibration source are defeated
Inbound port B forms closed-loop path.
As examined and determine two digital multimeters, two passage correspondence jacks can be accessed by second.Two channel switch K1 are made to be in " leading to "
State, then K6, K7 Guan Bi, K12 contact 3-4 connects.Now, the signal of telecommunication along calibration source input port A, K4 contact 5-3, one
The red jack of passage 5, tested digital multimeter 1, the black jack of passage 6, the contact 4-3 of K15 contact 3-4, K16, two passages are red to be inserted
Hole 7, tested digital multimeter 2, the two black jack of passage 8, contact 3-5, K5 of contact 3-5, K14 of K17 contact 3-4, K13
Contact 3-5, calibration source input port B form closed-loop path.In like manner, K1, K2, K3 any one be in the state of " leading to ",
Remaining state being in " breaking " just can realize two passage output current signals；K1, K2, K3 any two is in " leading to "
State, another state being in " breaking " just can realize triple channel output current signal；K1, K2, K3 are in " leading to "
State can realize four-way output current signal.
Corresponding tested digital multimeter gear adjusts calibration source electric current gear and requires output current signal according to vertification regulation, completes electricity
The calibrating of stream parameter.After end, disconnect calibration source output.
During calibrating alternating current, polarity switch 4 can be made to be in the state of " bearing ", K4 contact 3-4 connects, and K5 contact 3-4 connects.
Require calibration source output current signal according to vertification regulation, complete the negative sense calibrating of current parameters.
Disconnect the output of calibration source, K1, K2, K3 are in the state of " breaking ", polarity switch 4 is in the state of " just ", will rotation
Turn on pass 3 and be in " voltage " gear.
(3) resistance parameter calibrating
Multi-functional calibration source resistance output correspondence is accessed calibration source input port A, B, tested digital multimeter 1 is accessed a passage
Corresponding jack.Rotary switch 3 goes to " resistance " gear, K15～K21 contact 3-5 is connected.
Now, the signal of telecommunication leads to along calibration source input port A, K4 contact 5-3, a red jack of passage 5, tested digital multimeter 1,
The black jack in road 6,3-5, K5 contact, K15 contact 3-5, calibration source input port B form closed-loop path.Corresponding tested digital multimeter
Gear adjusts calibration source resistance gear and requires output resistance signal according to vertification regulation, completes the calibrating of resistance parameter.
Disconnection calibration source exports, and K1, K2, K3 is in the state of " breaking ", polarity switch 4 is in the state of " just ", will
Rotary switch 3 is in " voltage " gear.
Above design makes the present invention have following notable functional effect in a word: when measuring resistance, only use a passage, measure voltage,
Available to one to four-way during electric current.Wherein, when measuring voltage, between each passage, be equivalent to parallel relationship, thus can be any
Use in four passages, two, three or four passages；When measuring electric current, between each passage, be equivalent to series relationship,
And must use a passage, or while using a passage, use any one in two to four-way, two or three lead to
Road.
Claims (3)
1. the four-way output device being applicable to multi-functional calibration source, it is characterised in that including: for even
Meet the port A (1) and port B (2) of standard source signal, for selecting to detect the rotary switch (3) of type,
For selecting the polarity switch (4) of DC voltage and DC current polarity, dynamic circuit connector type relay K 6-K11, turn
Relay K of remodeling 4, K5, K12-K21, and digital multimeter detection jack and channel selector switch；
Described digital multimeter detection jack includes: passage jack red, black (5,6), two passages are red, black
Jack (7,8), triple channel jack red, black (9,10), four-way jack red, black (11,12),
Described channel selector switch includes: two channel switch K1, and triple channel switch K2, four-way switchs
K3；
Described dynamic circuit connector type relay has four contacts, contact 1,2 to be used for receiving 12V control signal, work as nothing
It is contact 3,4 disconnection of normality during control signal, transfers contact 3-4 upon receiving the control signal to and connect；
Described conversion hysteria relay switches between two-way output according to control signal, and conversion hysteria continues
Electrical equipment has five contacts, contact 1,2 to be used for receiving 12V control signal, is normality when without control signal
Contact 3-5 connects, and transfers contact 3-4 upon receiving the control signal to and connects；
Its middle port A (1), port B (2) jack (5,6) red with a passage, black respectively is corresponding；
And between port A (1) and the red jack of a passage 5, it is provided with K4, port B (2) and a black jack of passage 6
Between be provided with K5, K15；
Described polarity switch (4) has positive and negative two gears, is just positioned at during normality；When being in negative gear,
Conversion hysteria relay K 4, the contact 1,2 of K5 receive the 12V control signal that polarity switch (4) sends,
Contact 3-4 connects, DC voltage that completing port A (1), port B (2) are exported or DC current
Positive-negative polarity is changed；
Described two channel switch K1 have two states of switching, are in disconnected during normality；At two channel switch K1
When " breaking ", relay K 6, K7, K12 are in the normal state, when being in " leading to ", and the contact of K6, K7, K12
1,2 control signal is received；Two channel switch K1 by switching two states realize to relay K 6, K7,
The control of K12, make input port A (1), port B (2) standard source signal by two passages red, black
Jack (7,8) exports；
In like manner, described triple channel switch K2 has two states of switching, is in disconnected during normality；Triple channel switchs
When K2 is in " breaking ", relay K 8, K9, K13 are in the normal state, when being in " leading to ", relay K 8, K9,
The contact 1,2 of K13 receives control signal；Triple channel switch K2 is realized continuing by switching two states
The control of electrical equipment K8, K9, K13, make input port A (1), port B (2) standard source signal lead to
Cross triple channel jack red, black (9,10) to export；
In like manner, described four-way switch K3 has two states of switching, is in disconnected during normality；Four-way switchs
When K3 is in " breaking ", relay K 10, K11, K14 are in the normal state；When being in " leading to ", relay K 10,
The contact 1,2 of K11, K14 receives control signal；Four-way switch K3 is realized by switching two states
Relay K 10, K11, K14 are controlled, make input port A (1), the standard of port B (2)
Source signal is exported by the jack red, black (11,12) of four-way；
Conversion hysteria relay K 15-K21 is controlled by described rotary switch (3), with realize a passage red,
Black jack (5,6) and two passages jack red, black (7,8), triple channel jack red, black (9,10), four
Series-parallel conversion between passage jack red, black (11,12)；
Described rotary switch (3) has resistance, voltage, three gears of electric current, when being positioned at resistance gear,
Conversion hysteria relay K 15-K21 is normality, and input port A (1), the resistance signal of port B (2) pass through
Jack red, black (5, the 6) output of one passage；When being positioned at voltage gear, conversion hysteria relay K 15-K21
Also it is normality, by controlling the on off operating mode of channel switch K1 K3, makes to be in those passages of " leading to " state
In parallel with a passage jack, and then the voltage signal of input port A (1), port B (2) is by those
Passage in " leading to " state exports；When being positioned at electric current gear, the contact 1 of conversion hysteria relay K 15-K21,
2 receive control signal, and contact 3-4 connects；By controlling the on off operating mode of channel switch K1 K3, make place
In those passages and the passage jack series connection of " leading to " state, and then input port A (1), port B (2)
Current signal by those be in " lead to " state passages outputs.
A kind of four-way output device being applicable to multi-functional calibration source, it is special
Levy and be:
(1) output resistance detects jack to digital multimeter
Described change-over switch (3) switches to resistance gear；Polarity switch (4), channel switch K1-K3 are
Normality；Conversion hysteria relay K 4-K5, dynamic circuit connector type relay K 6-K11, conversion hysteria relay K 12-K14
For normality；
Multi-functional calibration source resistance signal is exported to port A (1), port B (2), tested digital multimeter
1 accesses passage jack red, black (5,6)；Resistance signal through port A (1), the 5-3 contact of K4, one
The red jack of passage (5), the black jack of digital multimeter 1, passage (6), the 3-5 contact of K15, K5
3-5 contact flows into port B (2), forms closed-loop path；Input port A (1), the resistance of port B (2)
Signal thus by passage jack red, black (5,6) export to digital multimeter 1；
(2) output voltage detects jack to digital multimeter
Described change-over switch (3) switches to voltage gear；Polarity switch (4) is normality；By multi-functional
Calibration source voltage signal exports to port A (1), port B (2)；
2.1) only by a passage output voltage
Now channel switch K1-K3 is normality；Conversion hysteria relay K 4-K5, dynamic circuit connector type relay K 6-K11,
Conversion hysteria relay K 12-K21 is normality；Tested digital multimeter 1 is accessed passage jack red, black (5,
6)；
Voltage signal is through port A (1), the 5-3 contact of K4, the red jack of a passage (5), digital multimeter
1, the black jack of a passage (6), the 3-5 contact of K15, the 3-5 contact of K5 flow into port B (2), are formed
Closed-loop path one；So that the voltage signal of input port A (1), port B (2) is able to by a passage
Jack red, black (5,6) exports to digital multimeter 1；
2.2) only by two passage output voltages
Two described channel switch K1 switch to logical state, so that K6 with K7 contact 3-4 connects, K12
Contact 3-4 connects；Tested digital multimeter 2 is accessed two passages jack red, black (7,8)；
Voltage signal through port A (1), the 5-3 contact of K4, the 3-4 contact of K6, the 5-3 contact of K16,
The red jack of two passage (7), the black jack of digital multimeter 2, two passage (8), the 3-5 contact of K17, K7
4-3 contact, K5 3-5 contact flow into port B (2), formed close and loop two；So that input
Mouth A (1), the voltage signal of port B (2) are able to be exported by the jack red, black (7,8) of two passages
To digital multimeter 2；
2.3) only by triple channel output voltage
With 2.2) situation in like manner, described triple channel switch K2 switches to logical state so that K8 and
K9 contact 3-4 connects, and K13 contact 3-4 connects；Tested digital multimeter 3 is accessed triple channel red, black
Jack (9,10)；
Voltage signal through port A (1), the 5-3 contact of K4, the 3-4 contact of K8, the 5-3 contact of K18,
The red jack of triple channel (9), digital multimeter 3, the black jack of triple channel (10), the 3-5 contact of K19, K9
4-3 contact, K5 3-5 contact flow into port B (2), formed closed-loop path three；So that input
Mouth A (1), the voltage signal of port B (2) are able to be exported by three-channel jack red, black (9,10)
To digital multimeter 3；
2.4) only by four-way output voltage
With 2.2), 2.3) situation in like manner, when described four-way switch K3 switches to logical state, thus
Making K10 with K11 contact 3-4 connect, K14 contact 3-4 connects；Digital multimeter 4 is accessed four-way
Jack red, black (11,12)；
Voltage signal through port A (1), the 5-3 contact of K4, the 3-4 contact of K10, the 5-3 contact of K20,
The red jack of four-way (11), digital multimeter 4, the black jack of four-way (12), the 3-5 contact of K21, K11
4-3 contact, K5 3-5 contact flow into port B (2), formed closed-loop path four；So that input
Mouth A (1), the voltage signal of port B (2) are able to by the jack red, black (11,12) of four-way defeated
Go out to digital multimeter 4；
2.5) by comprising any two of a passage, three passage output voltages simultaneously, or pass through
Four passage output voltages simultaneously
Digital multimeter 1-4 is respectively connected to passage jack red, black (5,6), two passages jack red, black
(7,8), triple channel jack red, black (9,10), four-way jack red, black (11,12)；
Channel switch K1 is logical, then concurrently form 2.1) in closed-loop path one and 2.2) in closed-loop path
Two；Channel switch K2 is logical, then concurrently form 2.1) in closed-loop path one and 2.3) in closed-loop path
Three；Channel switch K3 is logical, then concurrently form 2.1) in closed-loop path one and 2.4) in closed-loop path
Four；
Channel switch K1, K2 are logical, then concurrently form 2.1) in closed-loop path one and 2.2) in close
Close loop two and 2.3) in closed-loop path three；Channel switch K1, K3 are logical, then concurrently form 2.1)
In closed-loop path one and 2.2) in closed-loop path two and 2.4) in closed-loop path four；Channel switch
K2, K3 are logical, then concurrently form 2.1) in closed-loop path one and 2.3) in closed-loop path three and
2.4) closed-loop path four in；
Channel switch K1, K2, K3 are logical, then concurrently form 2.1) in closed-loop path one, 2.2) in
Closed-loop path two, 2.3) in closed-loop path three and 2.4) in closed-loop path four；
2.6) by a passage, and by two, three, any two passage in four-way or three passages
Output voltage simultaneously
Digital multimeter 2-4 is respectively connected to two passages jack red, black (7,8), triple channel jack red, black
(9,10), four-way jack red, black (11,12)；
Channel switch K1, K2 are logical, then concurrently form 2.2) in closed-loop path two and 2.3) in
Closed-loop path three；Channel switch K1, K3 are logical, then concurrently form 2.2) in closed-loop path two and 2.4)
In closed-loop path four；Channel switch K2, K3 are logical, then concurrently form 2.3) in closed-loop path three with
And 2.4) in closed-loop path four；
Channel switch K1, K2, K3 are logical, then concurrently form 2.2) in closed-loop path two, 2.3) in
Closed-loop path three and 2.4) in closed-loop path four；
2.7) dipole inversion of DC voltage is realized by polarity switch (4)
When described polarity switch (4) is normality, K4, K5 contact 3-5 connects, port A (1), end
Mouth B (2) is to the situation the most above-mentioned 2.1 of digital multimeter detection jack output voltage signal)-2.6)；I.e. hold
Mouthful A (1) is connected with each red jack through K4 contact 5-3, port B (2) through K5 contact 5-3 with respectively
Individual black jack is connected；
When described polarity switch (4) switches to negative state, and K4, K5 contact 3-4 connects, port A (1)
Being connected with each black jack through K5 contact 4-3, port B (2) is through K4 contact 4-3 and each red jack
It is connected, thus is achieved the dipole inversion of output voltage signal by polarity switch (4) and K4, K5；
(3) digital multimeter detection jack is outputed current to
Described change-over switch 3 switches to electric current gear, and polarity switch 4 is normality, conversion hysteria relay K 15-K21
Contact 3-4 connects, by multi-functional calibration source current signal output to port A (1), port B (2)；
3.1) only by a passage output electric current
Now channel switch K1-K3 is normality；Conversion hysteria relay K 4-K5, dynamic circuit connector type relay K 6-K11,
Conversion hysteria relay K 12-K14 is normality；Tested digital multimeter 1 is accessed passage jack red, black (5,
6)；
Current signal is through port A (1), the 5-3 contact of K4, the red jack of a passage (5), digital multimeter
1, the black jack of a passage (6), the 3-4 contact of K15, the 3-5 contact of K12, the 3-5 contact of K13,
The 3-5 contact of K14, the 3-5 contact of K5 flow into port B (2), form closed-loop path；So that input
Port A (1), the current signal of port B (2) are able to by the jack red, black (5,6) of a passage defeated
Go out to digital multimeter 1；
3.2) export electric current by one, 2 two passages simultaneously
Digital multimeter 1,2 is respectively connected to that passage jack red, black (5,6), two passages are red, black to be inserted
Hole (7,8), channel switch K1 is logical；So that K6 with K7 contact 3-4 connects, K12 contact 3-4
Connect；
Current signal through port A (1), K4 contact 5-3, the red jack of a passage (5), digital multimeter 1,
The black jack of one passage (6), 3-4, K16 contact, K15 contact 4-3, the red jack of two passage (7), numeral are many
With the black jack of table 2, two passage (8), 3-5, K14 contact, 3-4, K13 contact, K17 contact 3-5, K5
Contact 3-5 flows into port B (2), forms closed-loop path；So that input port A (1), port B (2)
Current signal successively red, black by the jack red, black (5,6) of a passage, two passages in series
Jack (7,8) exports to digital multimeter 1,2；
3.3) export electric current by one, 3 two passages simultaneously
Digital multimeter 1,3 is respectively connected to that passage jack red, black (5,6), triple channel are red, black inserts
Hole (9,10), channel switch K2 is logical；So that K8 with K9 contact 3-4 connects, K13 contact 3-4
Connect；
Current signal through port A (1), K4 contact 5-3, the red jack of a passage (5), digital multimeter 1,
The black jack of one passage (6), 3-4, K12 contact, K15 contact 3-5, K18 contact 4-3, the red jack of triple channel
(9), digital multimeter 3, the black jack of triple channel (10), 3-4, K14 contact, K19 contact 3-5, K5
Contact 3-5 flows into port B (2), forms closed-loop path；So that input port A (1), port B (2)
Current signal successively red, black by the jack red, black (5,6) of a passage, triple channel in series
Jack (9,10) exports to digital multimeter 1,3；
3.4) export electric current by one, 4 two passages simultaneously
Digital multimeter 1,4 is respectively connected to that passage jack red, black (5,6), four-way are red, black to be inserted
Hole (11,12), channel switch K3 is logical；So that K10 with K11 contact 3-4 connects, K14 contact
3-4 connects；
Current signal through port A (1), K4 contact 5-3, the red jack of a passage (5), digital multimeter 1,
The one black jack of passage 6, the 4-3 contact of 3-5, K13 contact, 3-4, K12 contact, K15 contact 3-5, K20,
The red jack of four-way (11), digital multimeter 4, the black jack of four-way (12), K21 contact 3-4, K5 touch
Point 3-5 flows into port B (2), forms closed-loop path；So that input port A (1), port B (2)
Current signal successively red, black by the jack red, black (5,6) of a passage, four-way in series
Jack (11,12) exports to digital multimeter 1,4；
3.5) by one, two, triple channel export electric current simultaneously
Digital multimeter 1,2,3 is respectively connected to passage jack red, black (5,6), two passages red, black
Jack (7,8), triple channel jack red, black (9,10), channel switch K1, K2 are logical；So that K6-K9
Contact 3-4 connects, and K12, K13 contact 3-4 connects；
Current signal is through port A (1), K4 contact 5-3, a red jack of passage 5, digital multimeter 1,
The black jack of passage 6,3-4, K16 contact, K15 contact 4-3, the two red jacks of passage 7, digital multimeter 2,
The two black jacks of passage 8,3-4, K18 contact, K17 contact 4-3, the red jack of triple channel 9, digital multimeter 3,
The black jack of triple channel 10,3-4, K14 contact, K19 contact 3-5, K5 contact 3-5 flow into port B (2),
Form closed-loop path；So that the current signal of input port A (1), port B (2) is in series
Successively red by the jack red, black (5,6) of a passage, two passages jack red, black (7,8), triple channel,
Black jack (9,10) exports to digital multimeter 1-3；
3.5) by one, two, four-way export electric current simultaneously
Digital multimeter 1,2,4 is respectively connected to passage jack red, black (5,6), two passages red, black
Jack (7,8), four-way jack red, black (11,12), channel switch K1, K3 are logical；So that
K6, K7, K10, K11 contact 3-4 connects, and K12, K14 contact 3-4 connects；
Current signal through port A (1), K4 contact 5-3, the red jack of a passage (5), digital multimeter 1,
The black jack of one passage (6), 3-4, K16 contact, K15 contact 4-3, the red jack of two passage (7), numeral are many
With the black jack of table 2, two passage (8), 3-4, K13 contact, K17 contact 3-5, K20 contact 4-3, four-way
The red jack in road (11), digital multimeter 4, the black jack of four-way (12), 3-4, K5 contact, K21 contact
3-5 flows into port B (2), forms closed-loop path；So that input port A (1), the electricity of port B (2)
Stream signal is in series successively by the jack red, black (5,6) of a passage, two passages jack red, black
(7,8), four-way jack red, black (11,12) export to digital multimeter 1,2,4；
3.6) by one, three, four-way export electric current simultaneously
Digital multimeter 1,3,4 is respectively connected to passage jack red, black (5,6), triple channel red, black
Jack (9,10), four-way jack red, black (11,12), channel switch K2, K3 are logical；So that
K8-K11 contact 3-4 connects, and K13, K14 contact 3-4 connects；
Current signal through port A (1), K4 contact 5-3, the red jack of a passage (5), digital multimeter 1,
The black jack of one passage (6), 3-4, K12 contact, K15 contact 3-5, K18 contact 4-3, the red jack of triple channel
(9), digital multimeter 3, the black jack of triple channel (10), 3-4, K20 contact, K19 contact 4-3, four-way
The red jack in road (11), digital multimeter 4, the black jack of four-way (12), 3-4, K5 contact, K21 contact
3-5 flows into port B (2), forms closed-loop path；So that input port A (1), the electricity of port B (2)
Stream signal is in series successively by the jack red, black (5,6) of a passage, triple channel jack red, black
(9,10), four-way jack red, black (11,12) export to digital multimeter 1,3,4；
3.7) export electric current by one to four-way simultaneously
Digital multimeter 1-4 is respectively connected to passage jack red, black (5,6), two passages jack red, black
(7,8), triple channel jack red, black (9,10), four-way jack red, black (11,12), passage is opened
It is logical for closing K1-K3；So that K6-K11 contact 3-4 connects, K12, K14 contact 3-4 connects；
Current signal through port A (1), K4 contact 5-3, the red jack of a passage (5), digital multimeter 1,
The black jack of one passage (6), 3-4, K16 contact, K15 contact 4-3, the red jack of two passage (7), numeral are many
With the black jack of table 2, two passage (8), 3-4, K18 contact, K17 contact 4-3, the red jack of triple channel (9),
Digital multimeter 3, triple channel black jack (10), 3-4, K20 contact, K19 contact 4-3, four-way are red inserts
Hole (11), digital multimeter 4, the black jack of four-way (12), 3-4, K5 contact, K21 contact 3-5 flow into
Port B (2), forms closed-loop path；So that input port A (1), the current signal of port B (2)
In series successively by the jack red, black (5,6) of a passage, two passages jack red, black (7,8),
Triple channel jack red, black (9,10), four-way jack red, black (11,12) export to digital multimeter
1-4；
3.8) dipole inversion of DC current is realized by polarity switch (4)
When described polarity switch (4) is normality, K4, K5 contact 3-5 connects, port A (1), end
Mouth B (2) is to the situation the most above-mentioned 3.1 of digital multimeter detection jack output current signal)-3.7)；I.e. hold
Mouth A (1) is connected with the red jack 5 of a passage through the 5-3 contact of K4, and port B (2) is through K5's
The black jack that 5-3 contact is in logical stator channel with last in four black jacks is connected；
When described polarity switch (4) switches to negative state, and K4, K5 contact 3-4 connects, port B (2)
Through K5 contact 4-3 output signal, from 3.1)-3.7) describe, port A (1) is through K5 contact 4-3
The black jack being in logical stator channel with last in four black jacks is connected, and port B (2) warp
K4 contact 4-3 and the red jack of a passage (5) are connected, thus are realized by the switching of polarity switch (4)
The conversion of current polarity.
Being applicable to the four-way output device of multi-functional calibration source the most as claimed in claim 1 or 2, it is special
Levying and be also to include blocking, each described jack red, black blocks with blocking when not working.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112803936A (en) * | 2020-12-23 | 2021-05-14 | 浙江中控技术股份有限公司 | Touch control's binary channels output auto-change over device |
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| CN103558495A (en) * | 2013-11-11 | 2014-02-05 | 成都曙创科技有限公司 | Multi-channel circuit on-off detection device |
| CN205643674U (en) * | 2016-04-14 | 2016-10-12 | 中国人民解放军91663部队 | Four -channel output device suitable for multi -functional calibration source |
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| JP2006030171A (en) * | 2004-06-14 | 2006-02-02 | Yamaha Corp | Portable electronic device with azimuth detection function, magnetometric sensor device and its calibration method |
| US20120163213A1 (en) * | 2010-12-23 | 2012-06-28 | Sensus Usa Inc. | Multi-band channel capacity for meter network |
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| CN105759234B (en) | 2018-10-23 |
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