CN208953612U - A kind of current sampling circuit and four binding post intelligent sockets based on current transformer - Google Patents
A kind of current sampling circuit and four binding post intelligent sockets based on current transformer Download PDFInfo
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- CN208953612U CN208953612U CN201821433146.5U CN201821433146U CN208953612U CN 208953612 U CN208953612 U CN 208953612U CN 201821433146 U CN201821433146 U CN 201821433146U CN 208953612 U CN208953612 U CN 208953612U
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- master controller
- intelligent socket
- binding post
- current transformer
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Abstract
The utility model provides a kind of current sampling circuit based on current transformer and four binding post intelligent sockets, current sampling circuit includes current coil sample circuit and master controller, the current coil sample circuit includes current transformer and filter circuit, and the output end of the current transformer is connected by the filter circuit with the analog-to-digital conversion pin of the master controller.The current sampling circuit based on current transformer of the utility model is mainly used in intelligent socket, for acquiring the input current of intelligent socket, the current signal of acquisition is transferred to master controller, and pass through the amplitude measurement algorithm of master controller, difference interference signal above sampled signal is automatically removed, reduces the jitter problem of sampled value, and it is higher and faster to acquire sensitivity, it realizes and acquires out alternating current with few device, reduce the actual cost of product.
Description
Technical field
The utility model relates to ac current measurement fields, and in particular to a kind of current sample electricity based on current transformer
Road and four binding post intelligent sockets based on the current sampling circuit.
Background technique
The method for being used to measure alternating current at present, sensitivity is low, and accuracy is also not high enough, and measuring circuit is complicated, cost
Height is not very convenient to use, in addition, alternating current generally all has interference signal, when measuring alternating current, interferes to survey
Amount, and measurement result can be had an impact, will generally try every possible means when measuring alternating current the influence for removing interference signal, and
Existing some methods for reducing interference signal and influencing, effect is less desirable, and more complicated, it is therefore necessary to design one
The circuit of the new measurement alternating current of kind, to overcome the above problem.
Utility model content
For the defect for overcoming the prior art, as the utility model in a first aspect, providing a kind of based on Current Mutual Inductance
The current sampling circuit of device, is mainly used in intelligent socket, for faster more accurately acquiring alternating current.
The utility model is realized in this way: a kind of current sampling circuit based on current transformer, including current coil
Sample circuit and master controller, the current coil sample circuit include current transformer and filter circuit, the Current Mutual Inductance
The output end of device is connected by the filter circuit with the analog-to-digital conversion pin of the master controller.
Further, the filter circuit includes that one end of resistance R1 and capacitor C1, the resistance R1 and capacitor C1 connect
It is connected to the output end of current transformer, the other end of the resistance R1 and capacitor C1 are grounded.
Further, the master controller is MCU microprocessor.
As the another aspect of the utility model, a kind of four binding post intelligent sockets are provided, including jack body and such as
Any current sampling circuit based on current transformer described above, the intelligent socket ontology have for line of starting to exchange fire
First binding post LI and the second binding post LO, the third post head N for connecing zero curve and the 4th binding post for ground line
PE, the current transformer are series between the first binding post LI and the second binding post LO, are inserted for acquiring the intelligence
The input current of seat.
Further, the four binding posts intelligent socket further includes communication module, the communication module and the main control
Device electrical connection.
Further, the four binding posts intelligent socket further includes capacitive load and the first relay, the capacitive load
And first relay be sequentially connected in series and form the first loop circuit between the second binding post LO and third post head N, it is described
Master controller is also electrically connected with the first relay, for controlling the on-off of first loop circuit.
Further, the four binding posts intelligent socket further includes voltage acquisition module, the voltage acquisition module series connection
Between the second binding post LO and third post head N, the master controller is also connect with the voltage acquisition module, to
Intelligent socket voltage parameter is obtained by voltage acquisition module.
Further, the four binding posts intelligent socket further includes the second current acquisition module, second current acquisition
In in the third post head N, the master controller is also electrically connected with second current acquisition module block coupled in series.
Further, the four binding posts intelligent socket further includes the display mould being set on the intelligent socket shell
Block, the display module are electrically connected with the master controller.
Further, the four binding posts intelligent socket further include further include the second relay, the second relay string
Be coupled on the second binding post LO, the master controller is also connect with second relay, to control described second after
The on-off of electric appliance.
The utility model has the beneficial effects that
The current sampling circuit based on current transformer of the utility model is mainly used in intelligent socket, for acquiring intelligence
The current signal of acquisition is transferred to master controller, and is surveyed by amplitude preset in master controller by the input current of energy socket
Quantity algorithm can automatically remove the difference interference signal above sampled signal, reduce the jitter problem of sampled value, and acquire spirit
Sensitivity is higher and faster, realizes and acquires out alternating current with few device, reduces the actual cost of product.
Detailed description of the invention
Fig. 1 is current coil sample circuit figure provided by the embodiment of the utility model；
Fig. 2 is AC current waveform to be measured provided by the embodiment of the utility model；
Fig. 3 is that scm software provided by the embodiment of the utility model acquires current filtering algorithm pattern；
Fig. 4 is the circuit connection diagram of four wiring socket for post of the utility model embodiment.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
All other embodiment obtained, fall within the protection scope of the utility model.
Such as Fig. 1-Fig. 3, the utility model in a first aspect, provide a kind of current sampling circuit based on current transformer,
It is mainly used in intelligent socket, including current coil sample circuit and master controller, the current coil sample circuit includes
Current transformer and filter circuit, the current transformer pass through the analog-to-digital conversion pin phase of filter circuit and the master controller
Even.The filter circuit includes resistance R1 and capacitor C1, the resistance R1 and capacitor C1 in parallel, the resistance R1 and capacitor C1's
It is series between the both ends of current mutual inductor coil.Such as Fig. 1, it is current coil sample circuit figure, is taken by current transformer
Alternating current after sample passes through the mould after the filter circuit that the resistance R1 and capacitor C1 is formed tentatively filters by master controller
Number switched pins enter the analog-digital converter (ADC) of master controller.The initialization of master controller completion timing device and ADC first,
Then it will interrupt and open, into circulation wait state, because using amplitude measurement algorithm, the break period of timer setting
It should be the half in tested alternating current period, Fig. 2 is exchange (AC) current waveform to be measured, from figure 2 it can be seen that the friendship
The period of galvanic electricity stream is 20ms, so the software program of amplitude measurement algorithm is preset in the present embodiment, in master controller, and
The break period that timer is set acquires the maximum/minimum of an alternating current as 10ms, every 10ms.
It is the amplitude measurement algorithm of utility model such as Fig. 3, the amplitude measurement algorithm is active computer software program,
Partial parameters therein under only modifying, so not being related to the improvement to computer program in the present embodiment, because of friendship to be measured
It is general on galvanic electricity stream all to have interference signal, difference interference signal can be automatically removed using amplitude measurement algorithm, so that measurement
Precision is higher, and faster, the working principle of the amplitude measurement algorithm is as follows for measuring speed:
The timer and ADC in initialization master controller are first had to, then opens and interrupts, take the period of alternating current to be measured
Half 10ms as the timer interruption time, timer interruption time is up adc data of acquisition, the i.e. primary exchange of acquisition
The maximum/minimum of electric current is put into amplitude data array, and in the present embodiment, the group for defining amplitude data array is entitled
The maximum/minimum of collected alternating current is put into Aisamp array as soon as completing time adc data acquisition by Aisamp
In, while acquisition counter variable just adds one automatically, the initial value of acquisition counter variable is zero；
Then, sample count number is set, in the present embodiment, sample count number is set as 50, when acquisition counter becomes
When amount reaches sample count number, i.e., after the acquisition tasks of 50 adc datas of master controller completion, take out Aisamp [50] array
In maximum value and minimum value, and calculate the difference of maximum value and minimum value in Aisamp [50] array and be put into difference array
In, add one automatically with time difference value counting variable, difference counting variable initial value is zero.In the present embodiment, difference array is entitled
Asamp after 50 acquisition tasks of every completion, finds out a difference, after being continuously available 100 differences, in Asamp [100] 100
Secondary data are averaged to get to final sampled value Aval, and sampled value Aval has just been obtained adopting for alternating current divided by two
Sample amplitude, then the sample magnitude of alternating current has just been obtained to the effective current value of alternating current divided by radical sign two.
The utility model embodiment is using in current sampling circuit combination master controller software algorithm acquisition ac circuit
Electric current realizes and acquires out alternating current with few device.Reduce the actual cost of product.In the present embodiment, master control
Device software algorithm processed using amplitude measurement algorithm, i.e. ADC inside master controller to the maximum value of signal and minimum value into
Row sampling, and its difference is calculated.After the acquisition repeatedly of such difference, it is averaged.The benefit of this algorithm is will to adopt
Difference interference signal above sample signal automatically removes.Reduce the jitter problem of sampled value, and it is higher and faster to acquire sensitivity.
As the another aspect of the utility model, a kind of four binding post intelligent sockets are provided, four binding post is intelligently inserted
Seat include include jack body and any current sampling circuit based on current transformer as described above, the intelligence
Energy jack body has for the first binding post LI and the second binding post LO of line of starting to exchange fire, the third post head N for connecing zero curve
And the 4th binding post PE for ground line, the current transformer are series at the first binding post LI and the second binding post
Between LO, for acquiring the input current of the intelligent socket.
Preferably, the four binding posts intelligent socket further includes communication module, the communication module and the master controller
Electrical connection.
Preferably, the four binding posts intelligent socket further includes capacitive load and the first relay, the capacitive load and
First relay, which is sequentially connected in series between the second binding post LO and third post head N, forms the first loop circuit, the master
Controller is also electrically connected with the first relay, for controlling the on-off of first loop circuit.
Preferably, the four binding posts intelligent socket further includes voltage acquisition module, and the voltage acquisition module is series at
Between the second binding post LO and third post head N, the master controller is also connect with the voltage acquisition module, to logical
Overvoltage acquisition module obtains intelligent socket voltage parameter.
Preferably, the four binding posts intelligent socket further includes the second current acquisition module, the second current acquisition mould
Block is series in the third post head N, and the master controller is also electrically connected with second current acquisition module.
Preferably, the four binding posts intelligent socket further includes the display module being set on the intelligent socket shell,
The display module is electrically connected with the master controller.
In above-described embodiment, the master controller can receive the control instruction of background server, control the first relay
On-off, thus control the first loop circuit on-off, adopt current sampling circuit by the on-off of first loop circuit
The current parameters of collection change, and send the current parameters to background server, have been pre-designed and have passed through in background server
Above-mentioned current parameters analysis obtains the software program of system topology, and background server can analyze out according to the current parameters
The topological structure and socket of route, the topological structure are intelligent socket and the connection relationship that is spaced apart, pass through the topology knot
Structure, it can be deduced that be connected with several intelligent sockets under being each spaced apart, each intelligent socket is connected under which is spaced apart, the electric current
Sample circuit can be with total input current of test socket.In addition, master controller can insert intelligence by setting display module
The electrical parameter real-time display on the display module of seat, in addition the electrical parameter can also be transferred to background service by master controller
Device, background server can analyze out intelligent socket route with the presence or absence of failure by the electrical parameter, and by intelligent socket line
Road situation shows on the display module, such as shows that intelligent socket route is normal on the display module or line fault etc..
Preferably, the four binding posts intelligent socket further include further include the second relay, second relay series connection
In on the second binding post LO, the master controller is also connect with second relay, to control second relay
The on-off of device.
In above-described embodiment, background server can according to need transmission control signal to master controller, thus control the
Two relays are switched on or switched off, since the second relay is series on the second binding post LO or third post head N, therefore second after
Being switched on or switched off for electric appliance will lead to being switched on or switched off for entire intelligent socket, realize the function of remotely operating a switch/close a floodgate.
It should be noted that claimed scheme involved by the utility model is to be selection and the company of each hardware device
Relationship is connect, and those skilled in the art are that can undoubtedly obtain corresponding upper program when knowing the application hardware plan
, so the application is claimed in scheme, it is not related to the improvement of program.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (9)
1. a kind of current sampling circuit based on current transformer, including current coil sample circuit and master controller, the electricity
Streamline circle sample circuit includes current transformer and filter circuit, and the output end of the current transformer passes through the filter circuit
It is connected with the analog-to-digital conversion pin of the master controller.
2. current coil mutual inductor as described in claim 1, it is characterised in that: the filter circuit includes resistance R1 and capacitor
One end of C1, the resistance R1 and capacitor C1 are all connected to the output end of current transformer, and the resistance R1 and capacitor C1's is another
One end is grounded.
3. a kind of four binding post intelligent sockets, which is characterized in that including jack body and base as claimed in claim 1 or 2
In the current sampling circuit of current transformer, the intelligent socket ontology has for the first binding post LI of line of starting to exchange fire and second
Binding post LO, the third post head N for connecing zero curve and the 4th binding post PE for ground line, the current transformer string
It is coupled between the first binding post LI and the second binding post LO.
4. four binding posts intelligent socket according to claim 3, which is characterized in that it further include communication module, the communication
Module is electrically connected with the master controller.
5. four binding posts intelligent socket according to claim 4, which is characterized in that further include capacitive load and the first relay
Device, the capacitive load and the first relay are sequentially connected in series forms between the second binding post LO and third post head N
Primary Ioops circuit, the master controller are also electrically connected with the first relay, for controlling the on-off of first loop circuit.
6. four binding posts intelligent socket according to claim 4, which is characterized in that it further include voltage acquisition module, it is described
Voltage acquisition module is series between the second binding post LO and third post head N, the master controller also with the voltage
Acquisition module connection, to obtain the voltage parameter of intelligent socket by voltage acquisition module.
7. four binding posts intelligent socket according to claim 4, which is characterized in that it further include the second current acquisition module,
Second current acquisition module is series in the third post head N, the master controller also with second current acquisition
Module electrical connection.
8. four binding posts intelligent socket according to claim 4, which is characterized in that further include being set to the intelligent socket
Display module on shell, the display module are electrically connected with the master controller.
9. four binding posts intelligent socket according to claim 4, which is characterized in that it further include the second relay, described
Two relays are series on the second binding post LO, and the master controller is also connect with second relay, to control
The on-off of second relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821433146.5U CN208953612U (en) | 2018-09-03 | 2018-09-03 | A kind of current sampling circuit and four binding post intelligent sockets based on current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821433146.5U CN208953612U (en) | 2018-09-03 | 2018-09-03 | A kind of current sampling circuit and four binding post intelligent sockets based on current transformer |
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| Publication Number | Publication Date |
|---|---|
| CN208953612U true CN208953612U (en) | 2019-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821433146.5U Active CN208953612U (en) | 2018-09-03 | 2018-09-03 | A kind of current sampling circuit and four binding post intelligent sockets based on current transformer |
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| CN (1) | CN208953612U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021134737A1 (en) * | 2020-01-02 | 2021-07-08 | 青岛鼎信通讯股份有限公司 | Vector analysis calculation-based arc crosstalk signal identification method |
| CN114624489A (en) * | 2020-12-10 | 2022-06-14 | 武威电建实业有限公司 | High-voltage charge control high-power supply low-voltage control device |
-
2018
- 2018-09-03 CN CN201821433146.5U patent/CN208953612U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021134737A1 (en) * | 2020-01-02 | 2021-07-08 | 青岛鼎信通讯股份有限公司 | Vector analysis calculation-based arc crosstalk signal identification method |
| US11733286B2 (en) | 2020-01-02 | 2023-08-22 | Qingdao Topscomm Communication Co., Ltd | Vector analysis calculation-based arc crosstalk signal identification method |
| CN114624489A (en) * | 2020-12-10 | 2022-06-14 | 武威电建实业有限公司 | High-voltage charge control high-power supply low-voltage control device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A current sampling circuit based on a current transformer and a four-terminal smart socket Effective date of registration: 20220728 Granted publication date: 20190607 Pledgee: Wuhan area branch of Hubei pilot free trade zone of Bank of China Ltd. Pledgor: HUBEI CHUANGKOU TECHNOLOGY Co.,Ltd. Registration number: Y2022420000240 |