CN207020244U - A kind of multiloop voltage collection circuit device - Google Patents
A kind of multiloop voltage collection circuit device Download PDFInfo
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- CN207020244U CN207020244U CN201720994039.9U CN201720994039U CN207020244U CN 207020244 U CN207020244 U CN 207020244U CN 201720994039 U CN201720994039 U CN 201720994039U CN 207020244 U CN207020244 U CN 207020244U
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Abstract
A kind of multiloop voltage collection circuit device of the utility model, including ac voltage signal, voltage conversion circuit and multigroup voltage collection circuit, alternating voltage is connected with voltage conversion circuit one end, the voltage conversion circuit other end is connected with one end of multigroup voltage collection circuit simultaneously, the other end of every group of voltage collection circuit is connected with the MCU of oneself respectively, simply with one group of voltage transformer, just can Shi Ge roads protection simultaneously collection busbar voltage, both wiring had been simplified, reduce voltage transformer, it in turn ensure that voltage, the synchronization of current acquisition, the precision of power calculation is ensured.
Description
Technical field
A kind of multiloop voltage collection circuit device of the utility model, it is related to a kind of AC-AC voltage acquisition technology neck
The technical field of the multiloop voltage acquisition in domain, more particularly to group-type microcomputer motor protective monitoring device.
Background technology
In order to measure the power in each loop in current group-type microcomputer motor protective monitoring device, to electric current, electricity
The synchronous of pressure sampling requires higher, therefore the collection to voltage uses each one group of voltage transformer in loop independently to adopt substantially
Sample, and because busbar is identical in a face cupboard, voltage signal is identical, results in voltage transformer and repeats to configure, and wiring is complicated；Certain
A little a small number of group-type microcomputer motor protective monitoring devices gather one group of voltage signal, internal communication distribution using a module
To each protection module, but because the synchronization of voltage acquisition, current acquisition is difficult to accomplish, the time delay also communicated, make power
Computational accuracy it is not ideal.
Utility model content
The purpose of this utility model is to overcome voltage in existing group-type microcomputer motor protective monitoring device mutual
Sensor repeats to configure, and the complicated deficiency of wiring, devises a kind of multiloop voltage collection circuit device.Its technical scheme used
It is：Structure including ac voltage signal, voltage conversion circuit and multigroup voltage collection circuit, it is characterised in that：Hand over
Stream voltage is connected with voltage conversion circuit one end, the voltage conversion circuit other end while one end phase with multigroup voltage collection circuit
Even, the other end of every group of voltage collection circuit is connected with the MCU of oneself respectively.
Described voltage conversion circuit is by current-limiting resistance R1, voltage transformer pt 1, sampling resistor R4, sampling resistor R5, filter
Ripple electric capacity C2, input resistance R10, resistance R11, amplifier U1C and filter capacitor C17 is followed to form, the one of the UA terminations R1 of voltage
End, R1 another termination PT1 2 pin, PT1 1 pin connect the N-terminal of voltage, and PT1 4 pin connect R4 one end, R5 simultaneously
One end of one end, C2 one end and R10, PT1 3 pin connect simultaneously the R4 other end, the R5 other end, C2 the other end and
U1C 10 pin, the R10 other end connect U1C 9 pin and R11 one end simultaneously, the R11 other end connect simultaneously U1C 8 pin,
C17 one end and output signal VA, C17 another termination signal GND.
Described voltage collection circuit is by filter inductance L304, impedance matching resistor R320, filter capacitor C321, input electricity
Resistance R315, resistance R316, amplifier U301C, filter capacitor C322, filter resistance R319 and filter capacitor C323 compositions are followed, by
The UA of change-over circuit output connects L304 one end, and the L304 other end connects R320 one end, R315 one end and C321 simultaneously
One end, the 10 of R320 another termination signal GND, C321 another termination signal GND, R315 another termination U301C
Pin, U301C 9 pin connect R316 one end, and the R316 other end connects U301C 8 pin, R319 one end and C322 simultaneously
One end, C322 another termination signal GND, the R319 other end connect C323 one end and MCU ADC inputs, C323 simultaneously
Another termination signal GND.
In described each device model sign and figure.
Implementing the positive effect after the technology is：Simply with one group of electricity in group-type microcomputer motor protective monitoring device
Press transformer, so that it may so that the busbar voltage of each road protection collection simultaneously, had both simplified wiring, and reduced voltage transformer, again
The synchronization of voltage, current acquisition is ensure that, has ensured the precision of power calculation.
Brief description of the drawings
Fig. 1 is schematic block circuit diagram of the present utility model；
Fig. 2 is voltage conversion circuit schematic diagram；
Fig. 3 is voltage collection circuit schematic diagram.
Embodiment
The utility model is further described below in conjunction with accompanying drawing：
See accompanying drawing 1, the model of each component indicated in the schematic diagram of quick response alternating current 220V intake Acquisition Circuit,
Market purchasing component achieves that one group of voltage conversion supplies the function of plurality of voltages collection by schematic diagram connection, further below
Illustrate the operation principle of circuit：The ac voltage signal for needing to gather passes through R1 current limlitings, and current mode voltage transformer is converted to conjunction
The electric current of suitable size, then suitable voltage is converted into by R4, R5, then be filtered by C2, input R10, U1C, R11 group
Into follower, put forward high-tension driving force, then C17 filtering, be output to each independent voltage acquisition circuit, adopted each
Collect in loop, voltage signal is filtered by L304, C321 first, and R320 prevents that change-over panel output voltage is breaking, causes collection to be believed
Number exception, voltage signal improve driving force again by the follower of R315, R316 and U301C composition, then by C322,
R319 and C323 filtering, is finally accessed in MCU ADC.
Described above is only embodiment of the present utility model, is not the limit for making other forms to the utility model
System, for any person skilled in the art, the utility model can have different changes.It is every in the utility model
Technical scheme within made any modification, equivalents etc., should be included in right of the present utility model it
It is interior.
Claims (3)
1. a kind of multiloop voltage collection circuit device, including ac voltage signal, voltage conversion circuit and multigroup voltage are adopted
Collector, alternating voltage are connected with voltage conversion circuit one end, and the voltage conversion circuit other end is simultaneously electric with multigroup voltage acquisition
The one end on road is connected, and the other end of every group of voltage collection circuit is connected with the MCU of oneself respectively.
A kind of 2. multiloop voltage collection circuit device according to claim 1, it is characterised in that：Described voltage conversion
Circuit by current-limiting resistance R1, voltage transformer pt 1, sampling resistor R4, sampling resistor R5, filter capacitor C2, input resistance R10,
Resistance R11, amplifier U1C and filter capacitor C17 is followed to form, the UA terminations R1 of voltage one end, the 2 of R1 another termination PT1
Pin, PT1 1 pin connect the N-terminal of voltage, and PT1 4 pin connect the one of R4 one end, R5 one end, C2 one end and R10 simultaneously
End, PT1 3 pin connect the R4 other end, the R5 other end, the C2 other end and U1C 10 pin, the R10 other end simultaneously
U1C 9 pin and R11 one end is connect simultaneously, the R11 other end connects U1C 8 pin, C17 one end and output signal VA simultaneously,
C17 another termination signal GND.
A kind of 3. multiloop voltage collection circuit device according to claim 1, it is characterised in that：Described voltage acquisition
Circuit by filter inductance L304, impedance matching resistor R320, filter capacitor C321, input resistance R315, follow resistance R316, fortune
Put U301C, filter capacitor C322, filter resistance R319 and filter capacitor C323 compositions, the UA exported by change-over circuit and meet L304
One end, the L304 other end connects one end of R320 one end, R315 one end and C321, R320 another termination simultaneously
Signal GND, C321 another termination signal GND, R315 another termination U301C 10 pin, U301C 9 pin connect the one of R316
End, the R316 other end connect U301C 8 pin, R319 one end and C322 one end, C322 another termination signal simultaneously
GND, the R319 other end connect C323 one end and MCU ADC inputs, C323 another termination signal GND simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720994039.9U CN207020244U (en) | 2017-08-10 | 2017-08-10 | A kind of multiloop voltage collection circuit device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720994039.9U CN207020244U (en) | 2017-08-10 | 2017-08-10 | A kind of multiloop voltage collection circuit device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207020244U true CN207020244U (en) | 2018-02-16 |
Family
ID=61478110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720994039.9U Active CN207020244U (en) | 2017-08-10 | 2017-08-10 | A kind of multiloop voltage collection circuit device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207020244U (en) |
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2017
- 2017-08-10 CN CN201720994039.9U patent/CN207020244U/en active Active
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