CN105759234B - Four-way output device suitable for multi-functional calibration source - Google Patents
Four-way output device suitable for multi-functional calibration source Download PDFInfo
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- CN105759234B CN105759234B CN201610231178.6A CN201610231178A CN105759234B CN 105759234 B CN105759234 B CN 105759234B CN 201610231178 A CN201610231178 A CN 201610231178A CN 105759234 B CN105759234 B CN 105759234B
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
Include port A, the B inputted for multi-functional calibration source, two to four-way switch K1-K3, relay K4-K21, rotary switch, polarity switch, one to four-way red, black jack suitable for the four-way output device of multi-functional calibration source；Relay K4, K5, K12~K21 are conversion hysteria, 3-5 connections in contact when no power, the 3-4 connections of energization back contact；Relay K6-K11 is dynamic circuit connector type.The state that the present invention is switched by gear and two that rotary switch is arranged to four-way, it can make comprising any two, three and four channels any one parameter in four output AC/DC voltage, ac and dc current parameters simultaneously including a channel, it can be at most completed at the same time the calibrating that 4 digital multimeters correspond to parameter, calibrating efficiency can be greatly improved.Reduce output plughole quantity, the reduction plug line time, equally improves calibrating efficiency；It is easy to use, it is easy to operate.
Description
Technical field
The present invention relates to a kind of four-way output devices suitable for multi-functional calibration source, belong to instrument detection technique neck
Domain.
Background technology
Digital multimeter is the Common Instrument for detecting electrical parameter signal, and main function is to measure combined-voltage, alternating current-direct current
The magnitude of electric current and resistance, to ensure the requirement for meeting equipment.Usually every piece of handheld digital multimeter includes five ginsengs
Number, 5-6 range of each parameter, 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《Alternating-current digital ampere meter》It is examined and determine Deng five vertification regulations, therefore complete one piece of handheld digital of calibrating is multi-purpose
Table needs 2 hours.
Calibrating for digital multimeter is typically to use multi-functional calibration source device, i.e., by multi-functional calibration source device
Output signal input digital multimeter is examined and determine.It on the other hand, cannot be by since digital multimeter is mostly without communication interface
Computer program-control cannot achieve automatic gauge, therefore need to expend a large amount of human resources and be examined and determine.And it is existing in the market
All only there are one output ports for multi-functional calibration source, this so that no matter examining and determine a how many piece tables is required for carrying out successively.Therefore, it examines and determine
Polylith table will consume a large amount of time.
Invention content
The object of the present invention is to provide a kind of four-way output devices suitable for multi-functional calibration source, more to improve number
With the calibrating efficiency of table.
The device realizes the string, simultaneously in four channels by the way that rotary switch containing three voltage, electric current, resistance projects is arranged
The conversion of gang mould formula；The combined-voltage and ac and dc current multiple combinations in four channels are realized by the way that three channel switch are arranged
The output of pattern；The dipole inversion of DC voltage and DC current is realized by the way that polarity switch is arranged.
Therefore, technical scheme of the present invention includes：
The port A and port B, two channel switch K1 of multi-functional calibration source input, triple channel switch K2, four-way switch
K3, multiple relays --- it is K4-K21 respectively, rotary switch 3, polarity switch 4, a channel is red, black jack 5,6, two channels
Red, black jack 7,8, triple channel is red, black jack 9,10, and four-way is red, black jack 11,12；
Described calibration source input port A, the B can connect multi-functional calibration source combined-voltage, alternating current-direct current by cable
The output end of electric current and resistance；
Described K4, K5, the K12~K21 is conversion hysteria relay, 3-5 connections in contact when no power, energization back contact 3-4
Connection；The K6-K11 is dynamic circuit connector type relay；
The two channel switch K1 have two states of switching, and K6, K7, K12 receive control signal when being in " logical ", touch
Point 3-4 connections；When in " disconnected ", K6, K7, K12 are in the normal state.The triple channel switch K2 has two states of switching, is in
K8, K9, K13 receive control signal, contact 3-4 connections when " logical "；When in " disconnected ", K8, K9, K13 are in the normal state.Described four
Channel switch K3 has two states of switching, and K10, K11, K14 receive control signal, contact 3-4 connections when being in " logical "；It is in
When " disconnected ", K10, K11, K14 are in the normal state.
The rotary switch has three voltage, electric current, resistance gears, be in " voltage " or " resistance " gear when K15~
K21 is in the normal state, the contact 3-4 connections energization of K15~K21 when being in " electric current " gear.
The polarity switch has positive and negative two gears, and K4, K5 are in often too when being in " just " gear；In " negative " shelves
K4, K5 receive control signal, contact 4-5 connections when position.
Each red, black jack is the electronic component for being connect with tested digital multimeter, this is suitable for more work(
Can the four-way output device of calibration source further include blocking, with blocking when each red, black jack does not work.
(1) output resistance detects jack to digital multimeter
The change-over switch switches to resistance gear, and polarity switch is in the normal state；Remaining two to four-way switch K1-
K3 is respectively positioned on normality；Conversion hysteria relay K15-K21 is normality, and contact 3-5 is connected；
Multi-functional calibration source resistance signal is exported to port A, port B, and it is red, black to be detected one channel of the access of digital multimeter 1
Jack；Port A is connected by the contacts 5-3 of K4 with the red jack in a channel；5-3 contacts of the port B through K5 is black with a channel
Jack is connected；Input port A, port B resistance signal only exported from red, the black jack in a channel to tested digital multimeter；
(2) output voltage detects jack to digital multimeter
2.1) a channel output voltage is used only
The change-over switch switches to voltage gear, and polarity switch is in the normal state；Remaining two to four-way switch K1-
K3 is respectively positioned on normality；Conversion hysteria relay K15-K21 is normality, and contact 3-5 is connected；
Multi-functional calibration source voltage signal is exported to port A, port B, and it is red, black to be detected one channel of the access of digital multimeter 1
Jack；5-3 contacts of the port A through K4 is connected with the red jack in a channel；5-3 contacts of the port B through K5, K15 the contacts 5-3 with
The black jack in one channel is connected；Input port A, port B voltage signal exported to tested number by red, the black jack in a channel
Word multimeter；
2.2) two channel output voltages are used only
The change-over switch switches to voltage gear, and polarity switch is in the normal state；The two channel switch K1 switchings
When to logical state, K6, K7 receive control signal；Multi-functional calibration source voltage signal is exported to port A, port B, and it is more to be detected number
Access that two channels are red, black jack with table；5-3 contacts of the port A through K4, the contacts 3-4 of K6, K16 the contacts 5-3 and two channels
Red jack is connected, 5-3 contacts of the port B through K5, K7 the contacts 3-4, the contacts 5-3 of K17 be connected with the black jack 8 in two channels；
Input port A, port B voltage signal exported to tested digital multimeter by red, the black jack in two channels；
2.3) triple channel output voltage is used only
The change-over switch switches to voltage gear, and polarity switch is in the normal state；The triple channel switch K2 switchings
When to logical state, K8, K9 receive control signal；Multi-functional calibration source voltage signal is exported to port A, port B, and it is more to be detected number
Access that triple channel is red, black jack with table；5-3 contacts of the port A through K4, the contacts 3-4 of K8, the contacts 5-3 of K18 and triple channel
Red jack is connected, 5-3 contacts of the port B through K5, K9 the contacts 3-4, the contacts 5-3 of K19 be connected with the black jack of triple channel；It is defeated
Inbound port A, port B voltage signal exported to tested digital multimeter by red, the black jack of triple channel；
2.4) four-way output voltage is used only
The change-over switch switches to voltage gear, and polarity switch is in the normal state；The four-way switch K3 switchings
When to logical state, K10, K11 receive control signal；Multi-functional calibration source voltage signal is exported to port A, port B, is detected number
Multimeter accesses that four-way is red, black jack；5-3 contact, the 3-4 contact of K10, the 5-3 contact of K20 and four-way of the port A through K4
The red jack in road is connected, 5-3 contacts of the port B through K5, the contacts 3-4 of K11, K21 the contacts 5-3 and four-way black jack phase
Even；Input port A, port B voltage signal exported to tested digital multimeter by red, the black jack of four-way；
By converting the state of described epitope switch K1, K2, K3, can make in the channel and a channel for leading to state simultaneously
Connection, and then may be implemented from comprising any two including a channel, three and four channels output voltage signal simultaneously；
2.5) dipole inversion of DC voltage is realized by polarity switch
The change-over switch switches to voltage gear, and the polarity switch cuts the negative state that goes to, and K4, K5 receive control
Signal；5-3 contacts of the port B through K4 is connected with the red jack in a channel；5-3 contacts of the port A through K5 and the black jack phase in a channel
Even；The DC voltage polarity of red through a channel, black jack output is opposite with the DC voltage polarity of input port A, port B；
Similarly, when two to four-way switch K1, K2, K3 convert to logical state, the red jack of port B and two channels, threeway
The red jack in road, the red jack of four-way are connected；Port A is connected with the black jack in two channels, the black jack of triple channel, the black jack of four-way；
Red, the black jack through two channels, triple channel is red, black jack, the DC voltage polarity and input port of red, the black jack output of four-way
A, the DC voltage polarity of port B is opposite；
(3) output current detects jack to digital multimeter
It can be from including any two including a channel, three and four channels output current signal simultaneously
3.1) a channel output current is used only
Change-over switch switches to electric current gear, and polarity switch is in the normal state；Remaining is two to the equal positions four-way switch K1-K3
In normality, conversion hysteria relay K15-K21 receives control signal at this time；
Multi-functional calibration source current signal is exported to port A, port B, and it is red, black slotting to be detected one channel of digital multimeter access
Hole；5-3 contacts of the port A through K4 is connected with the red jack in a channel；5-3 contacts of the port B through K5, K15 the contacts 5-3 and one
The black jack in channel is connected；Input port A, port B current signal exported to tested number by red, the black jack in a channel
Multimeter；
3.2) two channel measurements are used to be detected digital multimeter
Any one conversion in described tri- epitope switches of K1, K2, K3 can be existed to logical state from comprising a channel
Two interior channel output current signals：Three epitope switch K2 as will be described are converted to logical state, and K8, K9, K13 receive control
Signal, 5-3 contacts of the port A through K4 are connected with the red jack in a channel；3-4 contacts of the black jack B in one channel through K15, K12
The contacts 3-5, the contacts 4-3 of K18 are connected with the red jack of triple channel；3-5 contact of the black jack of triple channel through K19, K14 3-
5 contacts, K5 the contacts 3-5 be connected with port B；The series connection of three sections of circuits, input port A, port B voltage signal pass through a channel
Red, black jack and triple channel red, black jack output；
3.3) from including three channel output currents including a channel
Any two in described tri- epitope switches of K1, K2, K3 is converted to logical state, can be existed from comprising a channel
Three interior channel output current signals：Two epitope switch K1, four epitope switch K3 as will be described are converted to logical state, K6,
K7, K10, K11, K12, K14 receive control signal.5-3 contacts of the port A through K4 is connected with the red jack in a channel；One channel
3-4 contact, the 4-3 contact of K16 of the black jack through K15 are connected with the red jack in two channels；The 3- of the black jack through K17 in two channels
4 contacts, the contacts 3-5 of K13, the contacts 4-3 of K20 are connected with the red jack of four-way；3-4 of the black jack of four-way through K21 is touched
Point, K5 the contacts 3-5 be connected with port B；The series connection of four sections of circuits, input port A, port B current signal pass through a channel
The red-black jack output of red-black jack, the red-black jack in two channels, four-way；
Similarly, the two epitope K1, three epitope switch K2 or four epitope switch K3 any twos are converted to logical state
When, input port 1, port 2 current signal pass through two groups of red, black jacks outputs of a channel and corresponding logical stator channel；
3.4) from including four channel output currents including a channel
By described tri- epitope switches of K1, K2, K3, all conversion can export electricity simultaneously to logical state from four channels
Flow signal：The two epitope switch K1, three epitope switch K2, four epitope switch K3 are converted to logical state, K6-K14 is received
Control signal.5-3 contacts of the port A through K4 is connected with the red jack in a channel；3-4 contact of the black jack in one channel through K15,
The contacts 4-3 of K16 are connected with the red jack in two channels；3-4 contact of the black jack in two channels through K17, K18 the contacts 4-3 with
The red jack of triple channel is connected；3-4 contact, the 4-3 contact of K20 and the red jack of four-way of the black jack of triple channel through K19
It is connected；3-4 contact of the black jack of four-way through K21, K5 the contacts 3-5 be connected with port 2；Five sections of circuit series connection, input port
A, the current signal of port B passes through the red-black jack in a channel, red-black jack, the four-way of the red-black jack in two channels, triple channel
The red-black jack in road exports；
3.5) dipole inversion of DC current is realized by polarity switch
The change-over switch switches to electric current gear, and the polarity switch cuts the negative state that goes to, and K4, K5 receive control
Signal；When only by a channel output current, 4-3 contacts of the port A through K5, the contacts 5-3 of K14, K13 the contacts 5-3,
The contacts 5-3 of K12, the contacts 4-3 of K15 are connected with the black jack in a channel；3-4 contact of the red jack in one channel through K4 and end
Mouth B is connected；The DC current pole of the DC current signal polarity and input port A, port B of red through a channel, black jack output
Property is opposite；
Similarly, when epitope switch K1, K2, K3 are converted to logical state, the direct current of red through corresponding channel, black jack output
It is also opposite with input port 1, the DC current polarity of port 2 to flow polarity.
(4) one channels integrate output resistance, voltage, electric current
The change-over switch is switched into resistance, voltage, electric current gear successively, rest switch is respectively positioned on normality.Port A
It is connected with the red jack in a channel by the contacts 5-3 of K4；5-3 contacts of the port B through K5 is connected with the black jack in a channel；It is defeated
Inbound port A, the resistance of port B, voltage, current signal are exported by red, the black jack in a channel；
Advantageous effect of the invention is：
The present invention, can be with by the way that the gear of rotary switch 3 and the state in two channels, triple channel, four-way switch is arranged
Make comprising any two including a channel, three and four channels output AC/DC voltage, ac and dc current four simultaneously
Any one parameter in parameter can at most be completed at the same time the calibrating that 4 digital multimeters correspond to parameter, can greatly improve
Calibrating efficiency.
Meanwhile resistance output is fixed on a channel, it can realize combined-voltage, ac and dc current, electricity in a channel
Hinder the integrated output of five parameters；Combined-voltage, ac and dc current quadrinomial parameter are realized in two channels, triple channel, four-way
Integrated output, reduce output plughole quantity, the reduction plug line time, equally improve calibrating efficiency.
The module is easy to use, easy to operate.
Description of the drawings
The general structure schematic diagram of Fig. 1 present invention.
Fig. 2 rear panel appearance schematic diagrams of the present invention.
Fig. 3 front panel appearance schematic diagrams of the present invention.
Wherein, 1, port A, 2, port B, 3, rotary switch, 4, polarity switch, 5, the one red jack in channel, 6, one channel is black
Jack, 7, the two red jacks in channel, 8, the two black jacks in channel, 9, the red jack of triple channel, 10, the black jack of triple channel, 11, four-way it is red
Jack, 12, the black jack of four-way.
Specific implementation mode
As shown in Figs. 1-3,1 a kind of, four-way output device suitable for multi-functional calibration source, it is characterised in that including：
Port A (1) for connecting standard source signal and port B (2), the rotary switch (3) for selecting detection type, for selecting
DC voltage and the polar polarity switch of DC current (4), dynamic circuit connector type relay K6-K11, conversion hysteria relay K4, K5, K12-
K21 and digital multimeter detection jack and channel selection switch；
The digital multimeter detects jack：One channel is red, black jack (5,6), and two channels are red, black jack (7,8),
Triple channel is red, black jack (9,10), and four-way is red, black jack (11,12),
The channel selection switch includes：Two channel switch K1, triple channel switch K2, four-way switch K3；
There are four contacts for the dynamic circuit connector type relay, and contact 1,2 is for receiving 12V control signals, when without control signal
When for normality contact 3,4 disconnect, switch to contact 3-4 connections upon receiving the control signal；
The conversion hysteria relay is switched over according to control signal between two-way output end, and conversion hysteria relay has
Five contacts, contact 1,2 are the contact 3-5 connections of normality when without control signal, when receiving for receiving 12V control signals
Switch to contact 3-4 connections when controlling signal；
Jack (5,6) red with a channel, black are corresponding respectively by its middle port A (1), port B (2)；And port A (1) and one
K4 is equipped between the red jack in channel 5, equipped with K5, K15 between the black jack in port B (2) and a channel 6；
The polarity switch (4) has positive and negative two gears, is located under normal conditions just；When in negative gear, conversion hysteria relay
The contact 1,2 of device K4, K5 receive the 12V control signals that polarity switch (4) is sent out, and contact 3-4 is connected, completing port A (1), end
The positive-negative polarity conversion for the DC voltage or DC current that mouth B (2) is exported；
The two channel switch K1 has two states of switching, is in disconnected under normal conditions；When two channel switch K1 are in " disconnected ",
Relay K6, K7, K12 are in the normal state, and when being in " logical ", the contact 1,2 of K6, K7, K12 receive control signal；Two channel switch
K1 realizes the control to relay K6, K7, K12 by switching two states, makes the standard of input port A (1), port B (2)
By two channels, red, black jack (7,8) is exported source signal；
Similarly, the triple channel switch K2 has two states of switching, is in disconnected under normal conditions；Triple channel switch K2 is in
When " disconnected ", relay K8, K9, K13 are in the normal state, and when being in " logical ", the contact 1,2 of relay K8, K9, K13 receive control letter
Number；Triple channel switch K2 realizes the control to relay K8, K9, K13 by switching two states, makes input port A (1), end
The standard source signal of mouthful B (2) is red by triple channel, black jack (9,10) is exported；
Similarly, the four-way switch K3 has two states of switching, is in disconnected under normal conditions；Four-way switch K3 is in
When " disconnected ", relay K10, K11, K14 are in the normal state；When in " logical ", the contact 1,2 of relay K10, K11, K14 receive control
Signal processed；Four-way switch K3 controls relay K10, K11, K14 by the realization of switching two states, makes input terminal
Mouthful A (1), port B (2) standard source signal exported by red, the black jack (11,12) of four-way；
The rotary switch (3) controls conversion hysteria relay K15-K21, with realize a channel is red, black jack (5,
6) with two channels are red, black jack (7,8), triple channel is red, black jack (9,10), and four-way is red, the string between black jack (11,12)
Parallel connection conversion；
The rotary switch (3) has three resistance, voltage, electric current gears, when positioned at resistance gear, conversion hysteria relay
Device K15-K21 is normality, and input port A (1), the resistance signal of port B (2) are defeated by red, the black jack (5,6) in a channel
Go out；When positioned at voltage gear, conversion hysteria relay K15-K21 is also normality, passes through the break-make of control channel switch K1-K3
State makes, and then the voltage of input port A (1), port B (2) in parallel with a channel jack in those of " logical " state channel
The channel that signal is in " logical " state by those exports；When positioned at electric current gear, the contact of conversion hysteria relay K15-K21
1,2 control signal is received, contact 3-4 is connected；By the on off operating mode of control channel switch K1-K3, make in " logical " state
Those channels are connected with a channel jack, and then the current signal of input port A (1), port B (2) are in " logical " by those
The channel of state exports.
A kind of four-way output device suitable for multi-functional calibration source, it is characterised in that：
(1) output resistance detects jack to digital multimeter
The change-over switch (3) switches to resistance gear；Polarity switch (4), channel switch K1-K3 are normality；Conversion
Type relay K4-K5, dynamic circuit connector type relay K6-K11, conversion hysteria relay K12-K14 are normality；
Multi-functional calibration source resistance signal is exported to port A (1), port B (2), it is logical to be detected the access of digital multimeter 1 one
Road is red, black jack (5,6)；Resistance signal through port A (1), the contacts 5-3 of K4, the red jack in a channel (5), digital multimeter 1,
The black jack in one channel (6), the contacts 3-5 of K15, K5 the contacts 3-5 flow into port B (2), formed closed circuit；Input port A
(1), the resistance signal of port B (2) is to which by a channel, red, black jack (5,6) exports to digital multimeter 1；
(2) output voltage detects jack to digital multimeter
The change-over switch (3) switches to voltage gear；Polarity switch (4) is normality；By multi-functional calibration source voltage
Signal is exported to port A (1), port B (2)；
2.1) only pass through a channel output voltage
Channel switch K1-K3 is normality at this time；Conversion hysteria relay K4-K5, dynamic circuit connector type relay K6-K11, conversion hysteria after
Electric appliance K12-K21 is normality；Red, the black jack (5,6) by one channel of the access of tested digital multimeter 1；
Voltage signal is black slotting through port A (1), the contacts 5-3 of K4, the red jack in a channel (5), digital multimeter 1, a channel
Hole (6), the contacts 3-5 of K15, K5 the contacts 3-5 flow into port B (2), formed closed circuit one；To make input port A (1),
The voltage signal of port B (2) is able to red, the black jack (5,6) by a channel and exports to digital multimeter 1；
2.2) only pass through two channel output voltages
The two channel switch K1 switch to logical state, and to make the contacts K6 with K7 3-4 connect, the contacts K12 3-4 connects
It is logical；Red, the black jack (7,8) by two channels of the access of tested digital multimeter 2；
Voltage signal is through port A (1), the contacts 5-3 of K4, the contacts 3-4 of K6, the contacts 5-3 of K16, the red jack in two channels
(7), the contacts the 3-5 inflow port B of digital multimeter 2, the black jack in two channels (8), the contacts 3-5 of K17, the contacts 4-3 of K7, K5
(2), it is formed and is closed and circuit two；To enable the voltage signal of input port A (1), port B (2) to pass through the red, black of two channels
Jack (7,8) is exported to digital multimeter 2；
2.3) only pass through triple channel output voltage
Similarly with situation 2.2), the triple channel switch K2 switches to logical state, to make the contacts K8 and K9 3-4 connect
Logical, the contacts K13 3-4 is connected；Red, the black jack (9,10) by the access of tested digital multimeter 3 triple channel；
Voltage signal is through port A (1), the contacts 5-3 of K4, the contacts 3-4 of K8, the contacts 5-3 of K18, the red jack of triple channel
(9), the contacts the 3-5 inflow port of the black jack of digital multimeter 3, triple channel (10), the contacts 3-5 of K19, the contacts 4-3 of K9, K5
B (2) forms closed circuit three；To enable the voltage signal of input port A (1), port B (2) by triple channel it is red,
Black jack (9,10) exports to digital multimeter 3；
2.4) only pass through four-way output voltage
Similarly with situation 2.2), 2.3), when the four-way switch K3 switches to logical state, to make K10 and K11
Contact 3-4 is connected, and the contacts K14 3-4 is connected；Red, the black jack (11,12) by the access four-way of digital multimeter 4；
Voltage signal is through port A (1), the contacts 5-3 of K4, the contacts 3-4 of K10, the contacts 5-3 of K20, the red jack of four-way
(11), the contacts the 3-5 inflow end of the black jack of digital multimeter 4, four-way (12), the contacts 3-5 of K21, the contacts 4-3 of K11, K5
Mouth B (2) forms closed circuit four；To enable the voltage signal of input port A (1), port B (2) to pass through four-way
Red, black jack (11,12) exports to digital multimeter 4；
2.5) by leading to comprising any two, three channels while the output voltage including a channel, or by four
Road while output voltage
Digital multimeter 1-4 is respectively connected to a red channel, black jack (5,6), two channels are red, black jack (7,8), threeway
Road is red, black jack (9,10), and four-way is red, black jack (11,12)；
Channel switch K1 be it is logical, then closed circuit one in being formed simultaneously 2.1) and 2.2) in closed circuit two；Channel
Switch K2 be it is logical, then closed circuit one in being formed simultaneously 2.1) and 2.3) in closed circuit three；Channel switch K3 be it is logical, then
Closed circuit one in being formed simultaneously 2.1) and 2.4) in closed circuit four；
Channel switch K1, K2 be it is logical, then closed circuit one in being formed simultaneously 2.1) and 2.2) in closed circuit two with
And 2.3) in closed circuit three；Channel switch K1, K3 be it is logical, then closed circuit one in being formed simultaneously 2.1) and 2.2) in
Closed circuit two and 2.4) in closed circuit four；Channel switch K2, K3 are logical, the then closed circuit in being formed simultaneously 2.1)
One and 2.3) in closed circuit three and 2.4) in closed circuit four；
Channel switch K1, K2, K3 be it is logical, then closed circuit one in being formed simultaneously 2.1), 2.2) in closed circuit
Two, 2.3) in closed circuit three and 2.4) in closed circuit four；
2.6) it not by a channel, and is exported simultaneously by any two channel in two, three, four-way or three channels
Digital multimeter 2-4 is respectively connected to that two channels are red, black jack (7,8) by voltage, and triple channel is red, black jack (9,10), four-way
Red, black jack (11,12)；
Channel switch K1, K2 be it is logical, then closed circuit two in being formed simultaneously 2.2) and 2.3) in closed circuit three；
Channel switch K1, K3 be it is logical, then closed circuit two in being formed simultaneously 2.2) and 2.4) in closed circuit four；Channel switch
K2, K3 be it is logical, then closed circuit three in being formed simultaneously 2.3) and 2.4) in closed circuit four；
Channel switch K1, K2, K3 be it is logical, then closed circuit two in being formed simultaneously 2.2), 2.3) in closed circuit
Three and 2.4) in closed circuit four；
2.7) dipole inversion of DC voltage is realized by polarity switch (4)
The polarity switch (4) is that under normal conditions, the contact K4, K5 3-5 is connected, and port A (1), port B (2) are more to number
The situation for example above-mentioned 2.1) -2.6 of jack output voltage signal is detected with table)；That is port A (1) through the contacts K4 5-3 with it is each it is red insert
Hole is connected, and port B (2) is connected through the contacts K5 5-3 with each black jack；
When the polarity switch (4) switches to negative state, the contact K4, K5 3-4 is connected, port A (1) through the contacts K5 4-3 with
Each black jack is connected, and port B (2) is connected through the contacts K4 4-3 with each red jack, to by polarity switch (4) with
And K4, K5 realize the dipole inversion of output voltage signal；
(3) digital multimeter detection jack is outputed current to
The change-over switch 3 switches to electric current gear, and polarity switch 4 is normality, conversion hysteria relay K15-K21 contact 3-
4 connect, and multi-functional calibration source current signal is exported to port A (1), port B (2)；
3.1) only pass through a channel output current
Channel switch K1-K3 is normality at this time；Conversion hysteria relay K4-K5, dynamic circuit connector type relay K6-K11, conversion hysteria after
Electric appliance K12-K14 is normality；Red, the black jack (5,6) by one channel of the access of tested digital multimeter 1；
Current signal is black slotting through port A (1), the contacts 5-3 of K4, the red jack in a channel (5), digital multimeter 1, a channel
Hole (6), the contacts 3-4 of K15, the contacts 3-5 of K12, the contacts 3-5 of K13, the contacts 3-5 of K14, K5 the contacts 3-5 flow into port
B (2) forms closed circuit；To enable the current signal of input port A (1), port B (2) to pass through the red, black of a channel
Jack (5,6) is exported to digital multimeter 1；
3.2) pass through one, 2 two channel while output current
Digital multimeter 1,2 is respectively connected to a red channel, black jack (5,6), two channels are red, black jack (7,8), channel
Switch K1 is logical；To make the contacts K6 with K7 3-4 connect, the contacts K12 3-4 is connected；
Current signal is through port A (1), the contacts K4 5-3, the red jack in a channel (5), digital multimeter 1, the black jack in a channel
(6), the contacts K15 3-4, K16 contact 4-3, the red jack in two channels (7), digital multimeter 2, the black jack in two channels (8), the contacts K17
The contact 3-4, K13 contact 3-5, K14 contact 3-5, K5 3-5 flows into port B (2), forms closed circuit；To make input port A
(1), the current signal of port B (2) is successively red, black by red, the black jack (5,6) in a channel, two channels in series
Jack (7,8) is exported to digital multimeter 1,2；
3.3) pass through one, 3 two channel while output current
Digital multimeter 1,3 is respectively connected to a red channel, black jack (5,6), triple channel be red, black jack (9,10), leads to
Road switch K2 is logical；To make the contacts K8 with K9 3-4 connect, the contacts K13 3-4 is connected；
Current signal is through port A (1), the contacts K4 5-3, the red jack in a channel (5), digital multimeter 1, the black jack in a channel
(6), the contacts the contacts K15 3-4, K12 contact 3-5, K18 4-3, the red jack of triple channel (9), digital multimeter 3, the black jack of triple channel
(10), the contacts the contacts K19 3-4, K14 contact 3-5, K5 3-5 flows into port B (2), forms closed circuit；To make input port A
(1), the current signal of port B (2) is successively red, black by red, the black jack (5,6) in a channel, triple channel in series
Jack (9,10) is exported to digital multimeter 1,3；
3.4) pass through one, 4 two channel while output current
Digital multimeter 1,4 is respectively connected to a red channel, black jack (5,6), four-way be red, black jack (11,12), leads to
Road switch K3 is logical；To make the contacts K10 with K11 3-4 connect, the contacts K14 3-4 is connected；
Current signal is through port A (1), the contacts K4 5-3, the red jack in a channel (5), digital multimeter 1, the black jack in a channel
6, the contacts 4-3 of the contacts the contacts K15 3-4, K12 contact 3-5, K13 3-5, K20, the red jack of four-way (11), digital multimeter 4,
The black jack of four-way (12), the contacts the K21 contact 3-4, K5 3-5 flow into port B (2), form closed circuit；To make input port
A (1), the current signal of port B (2) are successively red, black by red, black jack (5,6), the four-way in a channel in series
Jack (11,12) is exported to digital multimeter 1,4；
3.5) pass through one, two, triple channel while output current
Digital multimeter 1,2,3 is respectively connected to red a red channel, black jack (5,6), two channels, black jack (7,8), three
Channel is red, black jack (9,10), and channel switch K1, K2 are logical；To make the contacts K6-K9 3-4 connect, the contact K12, K13 3-4 connects
It is logical；
Current signal through port A (1), the contacts K4 5-3, the red jack 5 in a channel, digital multimeter 1, the black jack 6 in a channel,
The contacts the K15 contact 3-4, K16 4-3, the red jack 7 in two channels, digital multimeter 2, the black jack 8 in two channels, the contacts K17 3-4, K18
The red jack 9 of contact 4-3, triple channel, digital multimeter 3, the black jack 10 of triple channel, the contacts the K19 contact 3-4, K14 contact 3-5, K5
3-5 flows into port B (2), forms closed circuit；To make the current signal of input port A (1), port B (2) with concatenated side
Formula priority is by red, the black jack (5,6) in a channel, two channels are red, black jack (7,8), triple channel is red, black jack (9,10) is defeated
Go out to digital multimeter 1-3；
3.5) pass through one, two, four-way while output current
Digital multimeter 1,2,4 is respectively connected to red a red channel, black jack (5,6), two channels, black jack (7,8), four
Channel is red, black jack (11,12), and channel switch K1, K3 are logical；To make the contact K6, K7, K10, K11 3-4 connect, K12, K14
Contact 3-4 is connected；
Current signal is through port A (1), the contacts K4 5-3, the red jack in a channel (5), digital multimeter 1, the black jack in a channel
(6), the contacts K15 3-4, K16 contact 4-3, the red jack in two channels (7), digital multimeter 2, the black jack in two channels (8), the contacts K17
The contact 3-4, K13 contact 3-5, K20 4-3, the red jack of four-way (11), digital multimeter 4, the black jack of four-way (12), K21 are touched
Point 3-4, K5 contact 3-5 flow into port B (2), form closed circuit；To make the electric current of input port A (1), port B (2) believe
Number in series successively by red, the black jack (5,6) in a channel, two channels are red, black jack (7,8), four-way are red, black
Jack (11,12) is exported to digital multimeter 1,2,4；
3.6) pass through one, three, four-way while output current
By digital multimeter 1,3,4 be respectively connected to red a red channel, black jack (5,6), triple channel, black jack (9,10),
Four-way is red, black jack (11,12), and channel switch K2, K3 are logical；To make the contacts K8-K11 3-4 connect, the contact K13, K14
3-4 is connected；
Current signal is through port A (1), the contacts K4 5-3, the red jack in a channel (5), digital multimeter 1, the black jack in a channel
(6), the contacts the contacts K15 3-4, K12 contact 3-5, K18 4-3, the red jack of triple channel (9), digital multimeter 3, the black jack of triple channel
(10), the contacts K19 3-4, K20 contact 4-3, the red jack of four-way (11), digital multimeter 4, the black jack of four-way (12), K21
The contact contact 3-4, K5 3-5 flows into port B (2), forms closed circuit；To make the electric current of input port A (1), port B (2)
Signal in series successively by red, the black jack (5,6) in a channel, triple channel is red, black jack (9,10), four-way
Red, black jack (11,12) exports to digital multimeter 1,3,4；
3.7) pass through one to four-way while output current
Digital multimeter 1-4 is respectively connected to red a red channel, black jack (5,6), two channels, black jack (7,8), threeway
Road is red, black jack (9,10), four-way are red, black jack (11,12), and channel switch K1-K3 is logical；To make the contacts K6-K11 3-
4 connect, and the contact K12, K14 3-4 is connected；
Current signal is through port A (1), the contacts K4 5-3, the red jack in a channel (5), digital multimeter 1, the black jack in a channel
(6), the contacts K15 3-4, K16 contact 4-3, the red jack in two channels (7), digital multimeter 2, the black jack in two channels (8), the contacts K17
The contact 3-4, K18 4-3, the red jack of triple channel (9), digital multimeter 3, the black jack of triple channel (10), the contacts K19 3-4, K20 are touched
Point 4-3, the red jack of four-way (11), digital multimeter 4, the black jack of four-way (12), the contacts the K21 contact 3-4, K5 3-5 are flowed into
Port B (2) forms closed circuit；To make the current signal of input port A (1), port B (2) successively lead in series
Red, black jack (5,6), two channels of crossing a channel are red, black jack (7,8), triple channel are red, black jack (9,10), four-way are red,
Black jack (11,12) exports to digital multimeter 1-4；
3.8) dipole inversion of DC current is realized by polarity switch (4)
The polarity switch (4) is that under normal conditions, the contact K4, K5 3-5 is connected, and port A (1), port B (2) are more to number
The situation for example above-mentioned 3.1) -3.7 of jack output current signal is detected with table)；That is 5-3 contacts of the port A (1) through K4 and a channel
Red jack 5 be connected, 5-3 contacts of the port B (2) through K5 is in logical stator channel with the last one in four black jacks
Black jack is connected；
When the polarity switch (4) switches to negative state, the contact K4, K5 3-4 is connected, and port B (2) is defeated through the contacts K4 4-3
Go out signal, by 3.1) -3.7) it describes it is found that port A (1) is in logical through the last one in the contacts K5 4-3 and four black jacks
The black jack of stator channel is connected, and port B (2) is connected through the contacts K4 4-3 with the red jack in a channel (5), to pass through
The conversion of current polarity is realized in the switching of polarity switch (4).
Each red, black jack is the electronic component for being connect with tested digital multimeter, this is suitable for more work(
Can the four-way output device of calibration source further include multiple blockings, with blocking when each red, black jack does not work.
Specific embodiment
As shown in Figure 1, Figure 2, Fig. 3, the present invention include calibration source input port A, B, two channel switch K1, triple channel switch K2,
Four-way switch K3, relay K4~K21, rotary switch 3, polarity switch 4, and four couple corresponding to four Measurement channels
Red, black jack；
Described K4, the K5 can realize the conversion of alternating voltage, alternating current polarity.
Described K6, K7, the K12 can control two channel signals, and whether there is or not outputs；
Described K8, K9, the K13 can control triple channel signal, and whether there is or not outputs；
Described K10, K11, the K14 can control four-way signal, and whether there is or not outputs.
K15~the K21 can realize the conversion of four channel output parameters.
Default conditions：Polarity switch 4 is in " just " state；Channel switch K1, K2, K3 are in " disconnected " state；Rotary switch 3
In voltage status；Dynamic circuit connector type relay K6-K11 is in " disconnected " state；Conversion hysteria relay K12-K21 contact 3-5 connections.
The operating process that the present invention examines and determine digital multimeter is as follows：
(1) voltage parameter is examined and determine
Multi-functional calibration source voltage output is corresponded into AM access module calibration source input port A, B, by tested digital multimeter
It connects 1 and enters a channel and correspond to jack.
At this point, voltage signal can be along calibration source input port A, K4 contact 5-3, the red jack 5 in a channel, tested digital versatile
Table 1, the black jack 6 in a channel, the contact 3-5 of contact 3-5, K5 of K15, calibration source input port B form closed circuit.
Two digital multimeters are such as examined and determine, second two channel of access can be corresponded to jack.Two channel switch K1 are made to be in
The state of " logical ", then K6, K7 are closed (at this point, the 3-4 connections of the contacts K12, but does not act, and electric to measuring to measuring voltage
Stream acts).At this point, voltage number can be simultaneously along the contacts calibration source input port A, K4 contact 5-3, K6 contact 3-4, K16 5-
3, the red jack 7 in two channels, tested digital multimeter 2, the black jack 8 in two channels, the contacts the K17 contact 3-5, K7 contact 4-3, K5 3-5,
Calibration source input port B forms closed circuit.
Similarly, K1, K2, K3 any one be in the state of " logical ", remaining state for being in " disconnected " can realize that two is logical
Road output voltage signal；K1, K2, K3 any two are in the state of " logical ", another state for being in " disconnected " can be realized
Triple channel output voltage signal；The output of four-way voltage signal may be implemented in the state that K1, K2, K3 are in " logical ".It is corresponding
Tested digital multimeter gear adjustment calibration source voltage gear simultaneously requires output voltage signal according to vertification regulation, completes voltage ginseng
Several calibratings.After, disconnect calibration source output.
When examining and determine negative voltage, polarity switch 4 can be made to be in the state of " negative ", to make the contacts K4 3-4 connect, K5 is touched
Point 3-4 is connected；The output signal of port A has led to four black jacks (i.e. jack 6,8,10,12), the output letter of port B at this time
Number four red jacks (i.e. jack 5,7,9,11) are led to, to realize the conversion of positive-negative polarity.School is required according to vertification regulation
Quasi- source output voltage signal completes the negative sense calibrating of voltage parameter.
K1, K2, K3, are in the state of " disconnected " by the output for disconnecting calibration source, and polarity switch 4 is in the shape of " just " again
State.
(2) current parameters are examined and determine
Multi-functional calibration source electric current is exported into corresponding AM access module calibration source input port A, B, by tested digital multimeter 1
It accesses a channel and corresponds to jack.Rotary switch 3 is gone into " electric current " gear, the contacts K15~K21 3-4 is connected.
At this point, current signal can be along calibration source input port A, K4 contact 5-3, the red jack 5 in a channel, tested digital versatile
Table 1, the black jack 6 in a channel, the contacts the K15 contact 3-4, K12 contact 3-5, K13 contact 3-5, K14 contact 3-5, K5 3-5, calibration
Source input port B forms closed circuit.
Two digital multimeters are such as examined and determine, second two channel of access can be corresponded to jack.Two channel switch K1 are made to be in
The state of " logical ", then K6, K7 be closed, the 3-4 connections of the contacts K12.At this point, electric signal along calibration source input port A, K4 contact 5-3,
The red jack 5 in one channel, tested digital multimeter 1, the black jack 6 in a channel, the contact 4-3 of the contacts K15 3-4, K16, two channels are red
Jack 7, tested digital multimeter 2, the black jack 8 in two channels, the contacts K17 3-4, K13 contact 3-5, K14 contact 3-5, K5
Contact 3-5, calibration source input port B form closed circuit.Similarly, K1, K2, K3 any one be in the state of " logical ", remaining
State in " disconnected " can realize two channel output current signals；K1, K2, K3 any two are in the state of " logical ", separately
One state in " disconnected " can realize triple channel output current signal；The state that K1, K2, K3 are in " logical " can be real
Existing four-way output current signal.
Corresponding tested digital multimeter gear adjustment calibration source electric current gear simultaneously requires output current letter according to vertification regulation
Number, complete the calibrating of current parameters.After, disconnect calibration source output.
When examining and determine alternating current, polarity switch 4 can be made to be in the state of " negative ", the contacts K4 3-4 is connected, the contacts K5 3-4
It connects.Calibration source output current signal is required according to vertification regulation, completes the negative sense calibrating of current parameters.
K1, K2, K3, are in the state of " disconnected ", polarity switch 4 are in the state of " just " by the output for disconnecting calibration source,
Rotary switch 3 is in " voltage " gear.
(3) resistance parameter is examined and determine
Multi-functional calibration source resistance is exported into corresponding access calibration source input port A, B, tested digital multimeter 1 is accessed
One channel corresponds to jack.Rotary switch 3 is gone into " resistance " gear, the contacts K15~K21 3-5 is connected.
At this point, electric signal along calibration source input port A, K4 contact 5-3, the red jack 5 in a channel, tested digital multimeter 1,
The black jack 6 in one channel, the contacts the K15 contact 3-5, K5 3-5, calibration source input port B form closed circuit.Corresponding tested number is more
Calibration source resistance gear is adjusted with table gear and requires output resistance signal according to vertification regulation, completes the calibrating of resistance parameter.
Calibration source output is disconnected, K1, K2, K3 are in the state of " disconnected ", polarity switch 4 is in the state of " just ", it will
Rotary switch 3 is in " voltage " gear.
The above design is so that the present invention has following notable functional effect in a word：When measuring resistance, a channel is only used, is surveyed
Available to one to four-way when measuring voltage, electric current.Wherein, when measuring voltage, it is equivalent to parallel relationship between each channel, thus
One, two, three or four channel in four channels can arbitrarily be used；When measuring electric current, between each channel quite
In series relationship, and a channel must be used, or while using a channel, using any one in two to four-way
A, two or three channels.
Claims (2)
1. a kind of four-way output device suitable for multi-functional calibration source, it is characterised in that including：For connecting standard source letter
Number port A（1）With port B（2）, the rotary switch for selecting detection type（3）, for selecting DC voltage and direct current
Flow polar polarity switch（4）, dynamic circuit connector type relay K6-K11, conversion hysteria relay K4, K5, K12-K21 and digital versatile
Table detects jack and channel selection switch；
The digital multimeter detects jack：One channel is red, black jack（5,6）, two channels are red, black jack（7,8）, threeway
Road is red, black jack（9,10）, four-way is red, black jack（11,12）,
The channel selection switch includes：Two channel switch K1, triple channel switch K2, four-way switch K3；
For the dynamic circuit connector type relay there are four contact, contact 1,2 controls signal for receiving 12V, is when without control signal
The contact 3,4 of normality disconnects, and switchs to contact 3-4 connections upon receiving the control signal；
The conversion hysteria relay is switched over according to control signal between two-way output end, and there are five conversion hysteria relays
Contact, contact 1,2 control signal for receiving 12V, are the contact 3-5 connections of normality when without control signal, are controlled when receiving
Switch to 3-4 connections in contact when signal；
Its middle port A（1）, port B（2）Respectively with a channel is red, black jack（5,6）It is corresponding；And port A（1）With a channel
K4, port B are equipped between red jack 5（2）K5, K15 are equipped between the black jack in a channel 6；
The polarity switch（4）There are positive and negative two gears, is located under normal conditions just；When in negative gear, conversion hysteria relay
The contact 1,2 of K4, K5 receive polarity switch（4）The 12V control signals sent out, contact 3-4 are connected, completing port A（1）, port B
（2）The positive-negative polarity of the DC voltage or DC current that are exported is converted；
The two channel switch K1 has two states of switching, is in disconnected under normal conditions；When two channel switch K1 are in " disconnected ", relay
Device K6, K7, K12 are in the normal state, and when being in " logical ", the contact 1,2 of K6, K7, K12 receive control signal；Two channel switch K1 are logical
Control of the switching two states realization to relay K6, K7, K12 is crossed, input port A is made（1）, port B（2）Standard source letter
Number jack red, black by two channels（7,8）It is exported；
Similarly, the triple channel switch K2 has two states of switching, is in disconnected under normal conditions；When triple channel switch K2 is in " disconnected ",
Relay K8, K9, K13 are in the normal state, and when being in " logical ", the contact 1,2 of relay K8, K9, K13 receive control signal；Threeway
Road switch K2 realizes the control to relay K8, K9, K13 by switching two states, makes input port A（1）, port B（2）
Standard source signal is red by triple channel, black jack（9,10）It is exported；
Similarly, the four-way switch K3 has two states of switching, is in disconnected under normal conditions；When four-way switch K3 is in " disconnected ",
Relay K10, K11, K14 are in the normal state；When in " logical ", the contact 1,2 of relay K10, K11, K14 receive control signal；
Four-way switch K3 controls relay K10, K11, K14 by the realization of switching two states, makes input port A（1）,
Port B（2）Standard source signal red, the black jack that passes through four-way（11,12）It is exported；
The rotary switch（3）Conversion hysteria relay K15-K21 is controlled, red, the black jack with one channel of realization（5,6）With
Two channels are red, black jack（7,8）, triple channel is red, black jack（9,10）, four-way is red, black jack（11,12）Between connection in series-parallel
Conversion；
The rotary switch（3）With three resistance, voltage, electric current gears, when positioned at resistance gear, conversion hysteria relay
K15-K21 is normality, input port A（1）, port B（2）Resistance signal red, the black jack that passes through a channel（5,6）Output；
When positioned at voltage gear, conversion hysteria relay K15-K21 is also normality, passes through the break-make shape of control channel switch K1-K3
State makes, and then input port A in parallel with a channel jack in those of " logical " state channel（1）, port B（2）Voltage letter
Number by those be in " logical " state channel export；When positioned at electric current gear, the contact 1 of conversion hysteria relay K15-K21,
2 receive control signal, and contact 3-4 is connected；By the on off operating mode of control channel switch K1-K3, make that in " logical " state
A little channels are connected with a channel jack, and then input port A（1）, port B（2）Current signal be in " logical " shape by those
The channel of state exports；
The four-way output device suitable for multi-functional calibration source further includes blocking, and each red, black jack is not
With blocking when work.
2. a kind of four-way output device suitable for multi-functional calibration source as described in claim 1, it is characterised in that：
（1）Output resistance detects jack to digital multimeter
The change-over switch（3）Switch to resistance gear；Polarity switch（4）, channel switch K1-K3 be normality；Conversion hysteria after
Electric appliance K4-K5, dynamic circuit connector type relay K6-K11, conversion hysteria relay K12-K14 are normality；
Multi-functional calibration source resistance signal is exported to port A（1）, port B（2）, it is logical to be detected the first digital multimeter access one
Road is red, black jack（5,6）；Resistance signal is through port A（1）, the contacts 5-3 of K4, the red jack in a channel（5）, the first digital versatile
Table, the black jack in a channel（6）, the contacts 3-5 of K15, K5 the contacts 3-5 flow into port B（2）, form closed circuit；Input port
A（1）, port B（2）Resistance signal to by a channel red, black jack（5,6）It exports to the first digital multimeter；
（2）Output voltage detects jack to digital multimeter
The change-over switch（3）Switch to voltage gear；Polarity switch（4）For normality；By multi-functional calibration source voltage signal
It exports to port A（1）, port B（2）；
2.1）Only pass through a channel output voltage
Channel switch K1-K3 is normality at this time；Conversion hysteria relay K4-K5, dynamic circuit connector type relay K6-K11, conversion hysteria relay
K12-K21 is normality；Red, the black jack by one channel of tested first digital multimeter access（5,6）；
Voltage signal is through port A（1）, the contacts 5-3 of K4, the red jack in a channel（5）, the first digital multimeter, a channel are black inserts
Hole（6）, the contacts 3-5 of K15, K5 the contacts 3-5 flow into port B（2）, form closed circuit one；To make input port A（1）,
Port B（2）Voltage signal be able to red, the black jack by a channel（5,6）It exports to the first digital multimeter；
2.2）Only pass through two channel output voltages
The two channel switch K1 switch to logical state, and to make the contacts K6 with K7 3-4 connect, the contacts K12 3-4 is connected；It will
Tested second digital multimeter accesses that two channels are red, black jack（7,8）；
Voltage signal is through port A（1）, the contacts 5-3 of K4, the contacts 3-4 of K6, the contacts 5-3 of K16, the red jack in two channels（7）,
Second digital multimeter, the black jack in two channels（8）, the contacts 3-5 of K17, the contacts 4-3 of K7, K5 the contacts 3-5 flow into port B
（2）, formed and closed and circuit two；To make input port A（1）, port B（2）Voltage signal be able to through the red, black of two channels
Jack（7,8）It exports to the second digital multimeter；
2.3）Only pass through triple channel output voltage
With 2.2）Situation similarly, the triple channel switch K2 switches to logical state, to make the contacts K8 with K9 3-4 connect,
The contacts K13 3-4 is connected；Red, the black jack by tested third digital multimeter access triple channel（9,10）；
Voltage signal is through port A（1）, the contacts 5-3 of K4, the contacts 3-4 of K8, the contacts 5-3 of K18, the red jack of triple channel（9）,
The black jack of third digital multimeter, triple channel（10）, the contacts 3-5 of K19, the contacts 4-3 of K9, K5 the contacts 3-5 flow into port B
（2）, form closed circuit three；To make input port A（1）, port B（2）Voltage signal be able to through the red, black of triple channel
Jack（9,10）It exports to third digital multimeter；
2.4）Only pass through four-way output voltage
With 2.2）,2.3）Situation similarly, when the four-way switch K3 switches to logical state, to make the contacts K10 and K11
3-4 is connected, and the contacts K14 3-4 is connected；Red, the black jack by the 4th digital multimeter access four-way（11,12）；
Voltage signal is through port A（1）, the contacts 5-3 of K4, the contacts 3-4 of K10, the contacts 5-3 of K20, the red jack of four-way
（11）, the 4th digital multimeter, the black jack of four-way（12）, the contacts 3-5 of K21, the contacts 4-3 of K11, K5 the contacts 3-5 stream
Inbound port B（2）, form closed circuit four；To make input port A（1）, port B（2）Voltage signal be able to pass through four-way
Red, black jack（11,12）It exports to the 4th digital multimeter；
2.5）By comprising any two including a channel, three channels output voltage simultaneously, or it is same by four channels
When output voltage
First digital multimeter to the 4th digital multimeter is respectively connected to a channel is red, black jack（5,6）, two channels it is red, black
Jack（7,8）, triple channel is red, black jack（9,10）, four-way is red, black jack（11,12）；
Channel switch K1 is logical, then is formed simultaneously 2.1）In closed circuit one and 2.2）In closed circuit two；Channel switch
K2 is logical, then is formed simultaneously 2.1）In closed circuit one and 2.3）In closed circuit three；Channel switch K3 be it is logical, then simultaneously
Form 2.1）In closed circuit one and 2.4）In closed circuit four；
Channel switch K1, K2 are logical, then are formed simultaneously 2.1）In closed circuit one and 2.2）In closed circuit two and
2.3）In closed circuit three；Channel switch K1, K3 are logical, then are formed simultaneously 2.1）In closed circuit one and 2.2）In close
Close circuit two and 2.4）In closed circuit four；Channel switch K2, K3 are logical, then are formed simultaneously 2.1）In closed circuit one
With 2.3）In closed circuit three and 2.4）In closed circuit four；
Channel switch K1, K2, K3 are logical, then are formed simultaneously 2.1）In closed circuit one, 2.2）In closed circuit two,
2.3）In closed circuit three and 2.4）In closed circuit four；
2.6）Not by a channel, and pass through any two channel in two, three, four-way or three channels output voltage simultaneously
Second digital multimeter to the 4th digital multimeter is respectively connected to two channels are red, black jack（7,8）, triple channel is red, black
Jack（9,10）, four-way is red, black jack（11,12）；
Channel switch K1, K2 are logical, then are formed simultaneously 2.2）In closed circuit two and 2.3）In closed circuit three；Channel
Switch K1, K3 are logical, then are formed simultaneously 2.2）In closed circuit two and 2.4）In closed circuit four；Channel switch K2,
K3 is logical, then is formed simultaneously 2.3）In closed circuit three and 2.4）In closed circuit four；
Channel switch K1, K2, K3 are logical, then are formed simultaneously 2.2）In closed circuit two, 2.3）In closed circuit three with
And 2.4）In closed circuit four；
2.7）Pass through polarity switch（4）Realize the dipole inversion of DC voltage
The polarity switch（4）For under normal conditions, the contact K4, K5 3-5 is connected, port A（1）, port B（2）To digital multimeter
Detect the situation for example above-mentioned 2.1 of jack output voltage signal）-2.6）；That is port A（1）Through the contacts K4 5-3 and each red jack phase
Even, port B（2）It is connected with each black jack through the contacts K5 5-3；
When the polarity switch（4）Negative state is switched to, the contact K4, K5 3-4 is connected, port A（1）Through the contacts K5 4-3 with it is each
Black jack is connected, port B（2）It is connected with each red jack through the contacts K4 4-3, to pass through polarity switch（4）And K4,
K5 realizes the dipole inversion of output voltage signal；
（3）Output current to digital multimeter detection jack
The change-over switch 3 switches to electric current gear, and polarity switch 4 is normality, and conversion hysteria relay K15-K21 contact 3-4 connect
It is logical, multi-functional calibration source current signal is exported to port A（1）, port B（2）；
3.1）Only pass through a channel output current
Channel switch K1-K3 is normality at this time；Conversion hysteria relay K4-K5, dynamic circuit connector type relay K6-K11, conversion hysteria relay
K12-K14 is normality；Red, the black jack by one channel of tested first digital multimeter access（5,6）；
Current signal is through port A（1）, the contacts 5-3 of K4, the red jack in a channel（5）, the first digital multimeter, a channel are black inserts
Hole（6）, the contacts 3-4 of K15, the contacts 3-5 of K12, the contacts 3-5 of K13, the contacts 3-5 of K14, K5 the contacts 3-5 flow into port
B（2）, form closed circuit；To make input port A（1）, port B（2）Current signal be able to through the red, black of a channel
Jack（5,6）It exports to the first digital multimeter；
3.2）Pass through one, 2 two channel while output current
First digital multimeter, the second digital multimeter be respectively connected to a channel is red, black jack（5,6）, two channels it is red, it is black insert
Hole（7,8）, channel switch K1 is logical；To make the contacts K6 with K7 3-4 connect, the contacts K12 3-4 is connected；
Current signal is through port A（1）, the contacts K4 5-3, the red jack in a channel（5）, the first digital multimeter, the black jack in a channel
（6）, the contacts the K15 contact 3-4, K16 4-3, the red jack in two channels（7）, the second digital multimeter, the black jack in two channels（8）,K17
The contact contact 3-4, K13 contact 3-5, K14 contact 3-5, K5 3-5 flows into port B（2）, form closed circuit；To make input terminal
Mouth A（1）, port B（2）Current signal in series successively by red, the black jack in a channel（5,6）, two channels it is red,
Black jack（7,8）It exports to the first digital multimeter, the second digital multimeter；
3.3）Pass through one, 3 two channel while output current
First digital multimeter, third digital multimeter be respectively connected to a channel is red, black jack（5,6）, triple channel it is red, it is black insert
Hole（9,10）, channel switch K2 is logical；To make the contacts K8 with K9 3-4 connect, the contacts K13 3-4 is connected；
Current signal is through port A（1）, the contacts K4 5-3, the red jack in a channel（5）, the first digital multimeter, the black jack in a channel
（6）, the contacts the K15 contact 3-4, K12 contact 3-5, K18 4-3, the red jack of triple channel（9）, third digital multimeter, triple channel it is black
Jack（10）, the contacts the K19 contact 3-4, K14 contact 3-5, K5 3-5 flow into port B（2）, form closed circuit；To make input
Port A（1）, port B（2）Current signal in series successively by red, the black jack in a channel（5,6）, triple channel
Red, black jack（9,10）It exports to the first digital multimeter, third digital multimeter；
3.4）Pass through one, 4 two channel while output current
First digital multimeter, the 4th digital multimeter be respectively connected to a channel is red, black jack（5,6）, four-way it is red, it is black insert
Hole（11,12）, channel switch K3 is logical；To make the contacts K10 with K11 3-4 connect, the contacts K14 3-4 is connected；
Current signal is through port A（1）, the contacts K4 5-3, the red jack in a channel（5）, the first digital multimeter, the black jack in a channel
6, the contacts 4-3 of the contacts the contacts K15 3-4, K12 contact 3-5, K13 3-5, K20, the red jack of four-way（11）, the 4th digital versatile
The black jack of table, four-way（12）, the contacts the K21 contact 3-4, K5 3-5 flow into port B（2）, form closed circuit；To make input
Port A（1）, port B（2）Current signal in series successively by red, the black jack in a channel（5,6）, four-way
Red, black jack（11,12）It exports to the first digital multimeter, the 4th digital multimeter；
3.5）Pass through one, two, triple channel while output current
First digital multimeter, the second digital multimeter, third digital multimeter be respectively connected to a channel is red, black jack（5,
6）, two channels are red, black jack（7,8）, triple channel is red, black jack（9,10）, channel switch K1, K2 are logical；To make K6-K9 touch
Point 3-4 is connected, and the contact K12, K13 3-4 is connected；
Current signal is through port A（1）, the contacts K4 5-3, the red jack 5 in a channel, the first digital multimeter, the black jack 6 in a channel,
The contacts the K15 contact 3-4, K16 4-3, the red jack 7 in two channels, the second digital multimeter, the black jack 8 in two channels, the contacts K17 3-4,
The red jack 9 of the contacts K18 4-3, triple channel, third digital multimeter, the black jack 10 of triple channel, the contacts the K19 contact 3-4, K14 3-5,
The contacts K5 3-5 flows into port B（2）, form closed circuit；To make input port A（1）, port B（2）Current signal to go here and there
The mode of connection successively passes through red, the black jack in a channel（5,6）, two channels are red, black jack（7,8）, triple channel is red, black jack
（9,10）Output is to the first digital multimeter to third digital multimeter；
3.5）Pass through one, two, four-way while output current
First digital multimeter, the second digital multimeter, the 4th digital multimeter be respectively connected to a channel is red, black jack（5,
6）, two channels are red, black jack（7,8）, four-way is red, black jack（11,12）, channel switch K1, K3 are logical；To make K6, K7,
The contact K10, K11 3-4 is connected, and the contact K12, K14 3-4 is connected；
Current signal is through port A（1）, the contacts K4 5-3, the red jack in a channel（5）, the first digital multimeter, the black jack in a channel
（6）, the contacts the K15 contact 3-4, K16 4-3, the red jack in two channels（7）, the second digital multimeter, the black jack in two channels（8）,K17
The contact contact 3-4, K13 contact 3-5, K20 4-3, the red jack of four-way（11）, the 4th digital multimeter, the black jack of four-way
（12）, the contacts the K21 contact 3-4, K5 3-5 flow into port B（2）, form closed circuit；To make input port A（1）, port B
（2）Current signal in series successively by red, the black jack in a channel（5,6）, two channels are red, black jack（7,8）,
Four-way is red, black jack（11,12）It exports to the first digital multimeter, the second digital multimeter, the 4th digital multimeter；
3.6）Pass through one, three, four-way while output current
First digital multimeter, third digital multimeter, the 4th digital multimeter be respectively connected to a channel is red, black jack（5,
6）, triple channel is red, black jack（9,10）, four-way is red, black jack（11,12）, channel switch K2, K3 are logical；To make K8-
The contacts K11 3-4 is connected, and the contact K13, K14 3-4 is connected；
Current signal is through port A（1）, the contacts K4 5-3, the red jack in a channel（5）, the first digital multimeter, the black jack in a channel
（6）, the contacts the K15 contact 3-4, K12 contact 3-5, K18 4-3, the red jack of triple channel（9）, third digital multimeter, triple channel it is black
Jack（10）, the contacts the K19 contact 3-4, K20 4-3, the red jack of four-way（11）, the 4th digital multimeter, the black jack of four-way
（12）, the contacts the K21 contact 3-4, K5 3-5 flow into port B（2）, form closed circuit；To make input port A（1）, port B
（2）Current signal in series successively by red, the black jack in a channel（5,6）, triple channel is red, black jack（9,
10）, four-way is red, black jack（11,12）It exports to the first digital multimeter, third digital multimeter, the 4th digital multimeter；
3.7）Pass through one to four-way while output current
First digital multimeter to the 4th digital multimeter is respectively connected to a channel is red, black jack（5,6）, two channels it is red, black
Jack（7,8）, triple channel is red, black jack（9,10）, four-way is red, black jack（11,12）, channel switch K1-K3 is logical；To
The contacts K6-K11 3-4 is set to connect, the contact K12, K14 3-4 is connected；
Current signal is through port A（1）, the contacts K4 5-3, the red jack in a channel（5）, the first digital multimeter, the black jack in a channel
（6）, the contacts the K15 contact 3-4, K16 4-3, the red jack in two channels（7）, the second digital multimeter, the black jack in two channels（8）,K17
The contact contact 3-4, K18 4-3, the red jack of triple channel（9）, third digital multimeter, the black jack of triple channel（10）, the contacts K19 3-
4, the red jack of the contacts K20 4-3, four-way（11）, the 4th digital multimeter, the black jack of four-way（12）, the contacts K21 3-4, K5 touch
Point 3-5 flows into port B（2）, form closed circuit；To make input port A（1）, port B（2）Current signal with concatenated
Mode successively passes through red, the black jack in a channel（5,6）, two channels are red, black jack（7,8）, triple channel is red, black jack（9,
10）, four-way is red, black jack（11,12）It exports to the first digital multimeter to the 4th digital multimeter；
3.8）Pass through polarity switch（4）Realize the dipole inversion of DC current
The polarity switch（4）For under normal conditions, the contact K4, K5 3-5 is connected, port A（1）, port B（2）To digital multimeter
Detect the situation for example above-mentioned 3.1 of jack output current signal）-3.7）；That is port A（1）Contacts 5-3 through K4 are red with a channel
Jack 5 is connected, port B（2）The contacts 5-3 through K5 are in the black of logical stator channel with the last one in four black jacks and insert
Hole is connected；
When the polarity switch（4）Negative state is switched to, the contact K4, K5 3-4 is connected, port B（2）It exports and believes through the contacts K4 4-3
Number, by 3.1）-3.7）Description is it is found that port A（1）It is in logical state through the last one in the contacts K5 4-3 and four black jacks
The black jack in channel is connected, and port B（2）Through the red jack of the contacts K4 4-3 and a channel（5）It is connected, to pass through polarity
Switch（4）Switching realize current polarity conversion.
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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 |
| CN202994875U (en) * | 2012-12-07 | 2013-06-12 | 陕西千山航空电子有限责任公司 | A multi-channel calibrating device |
| CN203054052U (en) * | 2012-11-23 | 2013-07-10 | 北京无线电计量测试研究所 | Multi-channel program-control switch used for data acquisition unit calibration |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2656670B1 (en) * | 2010-12-23 | 2017-09-06 | Sensus USA Inc. | Multi-band channel capacity for meter network |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006030171A (en) * | 2004-06-14 | 2006-02-02 | Yamaha Corp | Portable electronic device with azimuth detection function, magnetometric sensor device and its calibration method |
| CN203054052U (en) * | 2012-11-23 | 2013-07-10 | 北京无线电计量测试研究所 | Multi-channel program-control switch used for data acquisition unit calibration |
| CN202994875U (en) * | 2012-12-07 | 2013-06-12 | 陕西千山航空电子有限责任公司 | A multi-channel calibrating device |
| 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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