CN205982418U - Power discrepancy correcting device - Google Patents
Power discrepancy correcting device Download PDFInfo
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- CN205982418U CN205982418U CN201621044403.7U CN201621044403U CN205982418U CN 205982418 U CN205982418 U CN 205982418U CN 201621044403 U CN201621044403 U CN 201621044403U CN 205982418 U CN205982418 U CN 205982418U
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Abstract
The utility model relates to the field of electronic technology, a power discrepancy correcting device is disclosed. Power discrepancy correcting device includes: sampling circuit connects the power device in the electronic product, is used for the sampling the current value and the magnitude of voltage of power device, and the controller, its integration has the voltage stabilizing module who is connected to power supply circuit, just the controller is connected sampling circuit with the power device is used for the basis the current value of the power device that sampling circuit sampled and the real -time power value that the magnitude of voltage calculated this power device, and adjust the turn -on time of power device is so that the real -time power value that corresponds keeps the standard power within range in the settlement. The utility model discloses can realize under voltage fluctuation's the condition that it can the held stationary with the power parameter relevant with voltage in guaranteeing the electronic product to revise the power of electronic product.
Description
Technical field
This utility model is related to electronic technology field, in particular it relates to a kind of power offset value correcting device.
Background technology
At present, part household appliances, particularly small household electrical appliance, such as soy bean milk making machine etc., its heating power or whipping power are all
It is to be determined by the real time operation voltage of product.Thus, when there is fluctuation in real time operation voltage, the heating work(of household appliances
Rate or whipping power also can fluctuate therewith, and the fluctuation of heating power or whipping power to the performance of household appliances and can make
Produce impact with the life-span.
Utility model content
The purpose of this utility model is to provide a kind of power offset value correcting device, for realizing the situation in voltage pulsation
Under make the power parameter held stationary related to voltage of household appliances.
To achieve these goals, this utility model provides a kind of power offset value correcting device, and this power offset value is repaiied
Equipment includes：Sample circuit, connects power device, the current value for described power device of sampling and the electricity in electronic product
Pressure value；And controller, it is integrated with the Voltage stabilizing module connecting to power circuit, and described controller connects described sample circuit
With described power device, the current value of power device and magnitude of voltage for being sampled according to described sample circuit calculate this power
The realtime power value of device, and adjust the ON time of described power device so that corresponding realtime power value is maintained at setting
In the range of calibration power.
Alternatively, described sample circuit includes：Current transformer, connects described power device and described controller, is used for
The current value of power device described in real-time sampling, and this current value is transferred to described controller；And current-to-voltage convertor,
Connect described current transformer and described controller, for the current value of described power device is converted to corresponding magnitude of voltage,
And this magnitude of voltage is transferred to described controller.
Alternatively, described controller includes：AD conversion module, connects described sample circuit, for by described sample circuit
The current value sampled and magnitude of voltage are converted to corresponding AD value；Computing module, connects described AD conversion module, for according to institute
State current value and described magnitude of voltage corresponding AD value calculates the realtime power value of this power device；Judge module, connects described meter
Calculate module, for judging described realtime power value whether in preset standard power bracket；And processing module, sentence described in connection
Disconnected module, for when described realtime power value is not in described preset standard power bracket, adjusting leading of described power device
The logical time, to revise described realtime power value, makes revised realtime power value be maintained in the range of the calibration power of setting.
Alternatively, described controller also includes：Calibration power range set module, for according under given normal voltage
The calibration power value of multiple calibration power points and power error, set corresponding power standard point corresponding calibration power scope；
Wherein, the plurality of calibration power point is from little to big tactic staged calibration power point, institute with calibration power value
State the difference that the performance number in calibration power scope is more than or equal to described calibration power value and corresponding described power error, and little
In the value preset equal to described calibration power value and corresponding described power error.
Alternatively, described processing module includes：Power tunes up module, connects described judge module and described power device,
For when described realtime power value is less than described calibration power value with the difference of corresponding described power error, adjusting described work(
The ON time of rate device extends, so that described realtime power value increases；And power turns module down, connect described judge module
With described power device, for described realtime power value be more than described calibration power value and corresponding described power error and
During value, the ON time adjusting described power device shortens, so that described realtime power value reduces.
Alternatively, described controller also includes：Power points adjusting module, connects described calibration power range set module,
For being less than the calibration power value of Current standards power points and the difference of maximum deviation in described realtime power value or being more than institute
State calibration power value and described maximum deviation value preset when, Current standards power points is adjusted to the calibration power point of next ladder
Or the calibration power point of a upper ladder, then the calibration power point pair after described calibration power range set module settings adjust
The calibration power scope answered；Wherein, described maximum deviation is to pass through in same calibration power point to adjust the conducting of power device
Time revises the ultimate value of realtime power value.
By technique scheme, the beneficial effects of the utility model are：Power offset value correction dress of the present utility model
Put in the case of can be implemented in voltage pulsation, the power of electronic product is modified with ensure in electronic product with voltage phase
Close power parameter can held stationary, thus be conducive to improve electronic product performance.
Other features and advantages of the utility model will be described in detail in subsequent specific embodiment part.
Brief description
Accompanying drawing is used to provide and further understands to of the present utility model, and constitutes a part for description, and following
Specific embodiment be used for together explaining this utility model, but do not constitute to restriction of the present utility model.In the accompanying drawings：
Fig. 1 is the structural representation of the power offset value correcting device of this utility model embodiment；
Fig. 2 is the structural representation of the sample circuit of this utility model embodiment；
Fig. 3 is the structural representation of the controller of this utility model embodiment；
Fig. 4 is the schematic flow sheet of the power deviation value correction method of this utility model embodiment；
Fig. 5 is the schematic flow sheet of the example carrying out power offset value correction of this utility model embodiment.
Description of reference numerals
1 power offset value correcting device 2 power device
11 sample circuit 12 controller
111 current transformer 112 current-to-voltage convertor
121 AD conversion module 122 computing module
123 judge module 124 processing module
125 calibration power range set module 126 power points adjusting module
Specific embodiment
Below in conjunction with accompanying drawing, specific embodiment of the present utility model is described in detail.It should be appreciated that herein
Described specific embodiment is merely to illustrate and explains this utility model, is not limited to this utility model.
As shown in figure 1, this utility model embodiment discloses a kind of power offset value correcting device 1, this power offset value
Correcting device 1 includes：Sample circuit 11, connects the power device 2 in electronic product, for the electric current of described power device of sampling
Value and magnitude of voltage；And controller 12, connect described sample circuit 11 and described power device 2, for according to described sampling electricity
The current value of power device 2 sampled in road 11 and magnitude of voltage calculate the realtime power value of this power device, and adjust described work(
The ON time of rate device 2 is so that corresponding realtime power value is maintained in the range of the calibration power of setting.Wherein, controller 12
The Voltage stabilizing module connecting to power circuit can be integrated with, this Voltage stabilizing module is used for the electricity of firm power deviation correcting device 1
The supply voltage that source circuit is exported.
Here, described electronic product can include the heating mixing tool such as utensil and soy bean milk making machine such as insulating pot, for these
Heating utensil and mixing tool, include multiple power devices in its whole service circuit, such as bidirectional thyristor (i.e. controllable silicon)
Deng, these power devices corresponding on and off when utensil runs, to produce corresponding heating power or to beat power.Cause
This, the realtime power value of the power device in electronic product reflects the heating power of electronic product, beats power etc., and power
The realtime power value of device is relevant with its ON time, and ON time is longer, and the running voltage of power device is bigger, operating current
Also bigger, thus realtime power value also mutually strains greatly, you can realize the liter of voltage by controlling the ON time of power device
Fall, reaches the purpose of power adjustment.Accordingly, the present embodiment utilizes the hardware device that sample circuit and controller are constituted, and adjusts electricity
The ON time of the power device of sub- product, revises the performance number deviateing the calibration power scope setting, so that power device
Realtime power value is maintained in the range of the calibration power of setting, thus realizing, in the case of voltage pulsation, keeping electronic product
Power bracket in work process steady.
In the present embodiment, described sample circuit can be the conventional voltage sampling circuit in this area and current sampling circuit
Combination, wherein voltage sampling circuit and current sampling circuit can adopt sensor, sampling A/D chip of concrete corresponding function etc..
Alternatively, as shown in Fig. 2 the sample circuit 11 of the present embodiment can include：Current transformer 111, connects described
Power device 2 and described controller 12, for the current value of power device described in real-time sampling 2, and this current value are transferred to
Described controller 12；And current-to-voltage convertor 112, connect described current transformer 111 and described controller 12, for inciting somebody to action
The current value of described power device 2 is converted to corresponding magnitude of voltage, and this magnitude of voltage is transferred to described controller 3.
Wherein, the model of current transformer 111 can be selected according to the actual requirements, and current-to-voltage convertor 112 can be adopted
With the current signal of input being converted in this area the circuit of voltage signal, such as conventional I/V circuit or chip etc..
Further, in the present embodiment, controller 12 can be using the conventional control possessing data processing function in prior art
Device, such as single-chip microcomputer, digital signal processor and microprocessor etc..
Power calculation mainly realized by the controller 12 of the present embodiment and power device ON time controls this two-part work(
Energy.Wherein, P=UI (P be power, U be voltage, I be electric current) ordinary power calculating formula and be configured with described sample circuit 1
On the basis of, calculating realtime power value when power device 2 runs using controller 12 is known computer program, thus not
Need controller is entered with the essential improvement on line program.Additionally, controlling the routine that the ON time of power device 2 is also controller
One of function, equally carries out substantive program update also without to controller.
Further, control for realizing power calculation and power device ON time, as shown in figure 3, the control of the present embodiment
Device 12 processed can include：AD conversion module 121, connects described sample circuit 11, for what described sample circuit 11 was sampled
Current value and magnitude of voltage are converted to corresponding AD value；Computing module 122, connects described AD conversion module 121, for according to described
Current value and the realtime power value of described magnitude of voltage corresponding AD value this power device 2 of calculating；Judge module 123, connects described
Whether computing module 122, for judging described realtime power value in preset standard power bracket；And processing module 124, even
Connect described judge module 123, for when described realtime power value is not in described preset standard power bracket, adjusting described work(
The ON time of rate device 2, so that described realtime power value is maintained in the range of the calibration power of setting.
Wherein, described AD conversion module 121 can be using conventional A/D chip, such as AD7865 chip, and a lot of controllers are (such as at present
DSP2812 controller) it is each equipped with A/D chip.Therefore, its described sample circuit 11 of connection of AD conversion module 121, that is, be equivalent to
The current value that gather described sample circuit 11 and the AD mouth of magnitude of voltage input controller.Described computing module 122 and described sentence
Disconnected module 123 is accomplished that power calculation and the logical judgment of routine, can be real by integrated computer in conventional controller
Existing.The major function of described processing module 124 is to control the conducting of described power device 2, and it is also that conventional controller is had
Basic control function.
Further, described controller 12 can also include：Calibration power range set module 125, for according to given
Normal voltage under the calibration power value of multiple calibration power points and power error set the corresponding mark of corresponding power standard point
Quasi- power bracket.Wherein, calibration power point can have multiple, corresponding to the different operational modes of electronic product, such as squeezing the juice
Machine, it is directed to the different hardness of material, there is provided multiple operation range squeezed the juice, and corresponds to a calibration power to this each gear
The calibration power point of the corresponding 100W of point, such as gear I, the gear operating point of the corresponding 200W of gear II.
The corresponding calibration power value of each calibration power point may be set to ladder and is incremented by, that is, formed with calibration power value from little to
Big tactic staged calibration power point, is such as incremented by with 100W for ladder, step values are less, are capable of power correction
More accurate, but the accurate requirement to hardware is also higher simultaneously, therefore specifically determines step values according to practical application.In addition,
Described power error is the acceptable scope of power swing, and acquiescence fluctuates as just in the range of (calibration power value ± power error)
Often power, if realtime power value in the range of this then it is assumed that not needing to carry out power correction.
In the present embodiment, this calibration power range set module 125 can by the memorizer that has in conventional controller Lai
Realize, be to preset and store calibration power scope according to given calibration power value and power error.
Therefore although though the controller 12 of the present embodiment comprises multiple functional modules, these functional modules have
Function all can be realized by carrying out accommodation to the basic function of conventional controller, and does not need to carry out software program
On essential improvement.
In practice, the realtime power value of the power device calculating in real time is likely less than the calibration power scope of setting,
Be likely larger than this calibration power scope, therefore for ease of process both of these case it will be appreciated that for described processing module 124 include with
Lower two submodules：
Power tunes up module, connects described judge module 123 and described power device 2, in described realtime power value
During less than minimal power values in described calibration power scope, the ON time adjusting described power device extends, so that described
Realtime power value increases.
Power turns module down, connects described judge module 123 and described power device 2, in described realtime power value
During more than maximum power value in described calibration power scope, the ON time adjusting described power device shortens, so that described
Realtime power value reduces.
Here, module is tuned up by power and power is turned module down and can be made the realtime power value progressively convergence of power device
In calibration power scope, but if realtime power value and calibration power range differences are away from excessive, when may need longer regulation
Between, correction effect is inconspicuous.For solving this problem, the controller 3 of the present embodiment can further include：Power points adjusting module
126, connect described calibration power range set module 125, for being less than Current standards power points in described realtime power value
The difference of calibration power value and maximum deviation or more than described calibration power value and described maximum deviation value preset when, will be current
Calibration power point is adjusted to the calibration power point of next ladder or the calibration power point of a upper ladder, then passes through described calibration power
Range set module 125 sets the corresponding calibration power scope of calibration power point after adjustment.
Wherein, described maximum deviation is to be revised by adjusting the ON time of power device in same calibration power point
The ultimate value of realtime power value.When the fluctuation of power exceedes described maximum deviation, only by adjusting the ON time of power device
The DeGrain being modified.Therefore, it can by increasing or reducing a power standard point, on another power grade
Carry out judgement to compare.
It is based on and above-mentioned power offset value correcting device identical utility model thinking, this utility model embodiment also proposes
A kind of power deviation value correction method, as shown in figure 4, this power deviation value correction method includes：
Step S41, the current value of power device in sampling electronic product and magnitude of voltage.
Step S42, the current value according to the power device sampled and magnitude of voltage calculate the realtime power of this power device
Value, and adjust the ON time of described power device so that corresponding realtime power value is maintained at the calibration power scope of setting
Interior.
Further, this power deviation value correction method can also include：
Step S43 (not shown in Fig. 4), according to the calibration power value of the multiple calibration power points under given normal voltage
Set corresponding power standard point corresponding calibration power scope with power error；Wherein, the plurality of calibration power point is to mark
From little to big tactic staged calibration power point, the performance number in described calibration power scope is more than quasi- performance number etc.
In the difference of described calibration power value and corresponding described power error, and it is less than or equal to described calibration power value and corresponding institute
State the value preset of power error.
Wherein, described setting corresponding power standard point corresponding calibration power scope can include：In described realtime power
Value less than calibration power value and the maximum deviation of Current standards power points difference or be more than described calibration power value with described
During the value preset of maximum deviation, Current standards power points is adjusted to the calibration power point of next ladder or the standard work(of a upper ladder
Rate point, resets the corresponding calibration power scope of the point of the calibration power after adjustment.Wherein, described maximum deviation is in same standard
Revise the ultimate value of realtime power value by adjusting the ON time of power device during power points.
Alternatively, in described step S42, adjust the ON time of described power device so that corresponding realtime power value is protected
Hold the method in the range of the calibration power setting can include：Described realtime power value be less than described calibration power value with right
During the difference of described power error answered, the ON time adjusting described power device extends, so that described realtime power value increases
Greatly；And when described realtime power value is more than described calibration power value with the value preset of corresponding described power error, adjust institute
The ON time stating power device shortens, so that described realtime power value reduces.
The power deviation value correction method of the present embodiment and the specific implementation details of above-mentioned power offset value correcting device
Identical, will not be described here.
In addition, it should be noted that, the scope carrying out power correction in the present embodiment does not include unit period internal power device
Performance number when all turning on, does not equally include the performance number that power device turns on the minimum time in unit period yet.This two
Individual value has arrived at the limit it is impossible to be modified by the scheme of this utility model embodiment.
Below by specific example to further illustrate this utility model embodiment power offset value correcting device and
The work process of power offset value correction is realized in method.
In this example, the normal voltage of electronic product is 220V, under this normal voltage, arranges the value of each calibration power point
It is incremented by with 100W for ladder.As shown in figure 5, power offset value correction is carried out to electronic product in this example mainly include following step
Suddenly：
Step S51, if the calibration power point corresponding power AD value selecting is T, power error is D, and maximum deviation is E.
Accordingly, corresponding calibration power scope is (T-D, T+D).
Step S52, realtime power value t of the power device of detection electronic product.
In this step, realtime power value t is obtained by the sampling of above-mentioned sample circuit and the calculating of controller, and real
When performance number t be AD value.
Whether step S53, judge realtime power value t in calibration power scope (T-D, T+D).
If so, then power remains unchanged, and does not carry out power modification, otherwise continues executing with other steps.
Step S54, in t<In the case of T-D, judge t whether more than or equal to T-E's.
Step S55, in t >=T-E, the conducting duration adjusting power device extends, and increases power.
Step S56, in t<During T-E, increase a calibration power point.
After increasing a calibration power point, step S55 can be re-executed in the calibration power point of new settings.
Step S57, in t>In the case of T+D, judge t whether less than or equal to T+E's.
Step S58, in t≤T+E, the conducting duration adjusting power device shortens, and reduces power.
Step S59, in t>During T+E, reduce a calibration power point.
After reducing a calibration power point, step S58 can be re-executed in the calibration power point of new settings.
After execution step S55, step S56, step S58 and step S59, return to step S52, until realtime power value
(T-D)≤t≤(T+D).So, it is possible, based on maintaining realtime power value t in the range of T ± D, to keep whole power bracket
Steadily.
In this example, as long as power device is started working (having operating current), sample circuit will real-time sampling work electricity
Stream, thus drawing realtime power AD value, this value is brought in the decision logic of controller, determines under current voltage, if
Need to carry out the correction of power.If desired, then control related hardware to run, realize power correction；If not needing, control hardware
Maintain current operating state.
In sum, the power offset value correcting device of this utility model embodiment can be implemented in the situation of voltage pulsation
Under, the power of electronic product is modified to ensure that related to voltage power parameter in electronic product being capable of held stationary.
Describe optional embodiment of the present utility model above in association with accompanying drawing in detail, but, this utility model does not limit
Detail in above-mentioned embodiment, in range of the technology design of the present utility model, can be to skill of the present utility model
Art scheme carries out multiple simple variant, and these simple variant belong to protection domain of the present utility model.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance
In the case of shield, can be combined by any suitable means.In order to avoid unnecessary repetition, this utility model is to each
Plant possible compound mode no longer separately to illustrate.
Additionally, combination in any can also be carried out, as long as it is not disobeyed between various different embodiment of the present utility model
Carry on the back thought of the present utility model, it equally should be considered as content disclosed in the utility model.
Claims (6)
1. a kind of power offset value correcting device (1) is it is characterised in that this power offset value correcting device (1) includes：
Sample circuit (11), connects the power device (2) in electronic product, for the current value of described power device (2) of sampling
And magnitude of voltage；And
Controller (12), it is integrated with the Voltage stabilizing module connecting to power circuit, and described controller (12) connects described sampling
Circuit (11) and described power device (2), the current value of the power device (2) for being sampled according to described sample circuit (11)
Calculate the realtime power value of this power device (2) with magnitude of voltage, and adjust the ON time of described power device (2) so that corresponding to
Realtime power value be maintained in the range of the calibration power of setting.
2. power offset value correcting device (1) according to claim 1 is it is characterised in that described sample circuit (11) wraps
Include：
Current transformer (111), connects described power device (2) and described controller (12), for power described in real-time sampling
The current value of device (2), and this current value is transferred to described controller (12)；And
Current-to-voltage convertor (112), connects described current transformer (111) and described controller (12), for by described work(
The current value of rate device (2) is converted to corresponding magnitude of voltage, and this magnitude of voltage is transferred to described controller (12).
3. power offset value correcting device (1) according to claim 1 is it is characterised in that described controller (12) includes：
AD conversion module (121), connects described sample circuit (11), for the current value that described sample circuit (11) is sampled
Be converted to corresponding AD value with magnitude of voltage；
Computing module (122), connects described AD conversion module (121), for corresponding with described magnitude of voltage according to described current value
AD value calculate this power device (2) realtime power value；
Judge module (123), connects described computing module (122), for judging described realtime power value whether in preset standard
In power bracket；And
Processing module (124), connect described judge module (123), in described realtime power value not in described preset standard
When in power bracket, the ON time adjusting described power device (2), to revise described realtime power value, makes revised real-time
Performance number is maintained in the range of the calibration power of setting.
4. power offset value correcting device (1) according to claim 3 is it is characterised in that described controller (12) also wraps
Include：
Calibration power range set module (125), for the standard according to the multiple calibration power points under given normal voltage
Performance number and power error, set corresponding power standard point corresponding calibration power scope；
Wherein, the plurality of calibration power point is from little to big tactic staged calibration power with calibration power value
Point, the performance number in described calibration power scope is more than or equal to the difference of described calibration power value and corresponding described power error
Value, and it is less than or equal to the value preset of described calibration power value and corresponding described power error.
5. power offset value correcting device (1) according to claim 4 is it is characterised in that described processing module (124) is wrapped
Include：
Power tunes up module, connects described judge module (123) and described power device (2), in described realtime power value
During less than described calibration power value with the difference of corresponding described power error, adjust the ON time of described power device (2)
Extend, so that described realtime power value increases；And
Power turns module down, connects described judge module (123) and described power device (2), in described realtime power value
During more than described calibration power value with the value preset of corresponding described power error, adjust the ON time of described power device (2)
Shorten, so that described realtime power value reduces.
6. power offset value correcting device (1) according to claim 3 is it is characterised in that described controller (12) also wraps
Include：
Power points adjusting module (126), connects described calibration power range set module (125), in described realtime power
Value less than calibration power value and the maximum deviation of Current standards power points difference or be more than described calibration power value with described
During the value preset of maximum deviation, Current standards power points is adjusted to the calibration power point of next ladder or the standard work(of a upper ladder
Rate point, the more corresponding calibration power of calibration power point after described calibration power range set module (125) sets adjustment
Scope；
Wherein, described maximum deviation is to be revised by adjusting the ON time of power device (2) in same calibration power point
The ultimate value of realtime power value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621044403.7U CN205982418U (en) | 2016-09-08 | 2016-09-08 | Power discrepancy correcting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621044403.7U CN205982418U (en) | 2016-09-08 | 2016-09-08 | Power discrepancy correcting device |
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| CN205982418U true CN205982418U (en) | 2017-02-22 |
Family
ID=58040469
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107801274A (en) * | 2017-11-10 | 2018-03-13 | 深圳市垅运照明电器有限公司 | A kind of constant power output LED drive power and its constant power output method |
| CN107807275A (en) * | 2016-09-08 | 2018-03-16 | 广东美的生活电器制造有限公司 | A kind of power offset value correcting device and method |
| CN109947170A (en) * | 2019-03-22 | 2019-06-28 | 九阳股份有限公司 | A kind of power stability method of insulating pot |
-
2016
- 2016-09-08 CN CN201621044403.7U patent/CN205982418U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107807275A (en) * | 2016-09-08 | 2018-03-16 | 广东美的生活电器制造有限公司 | A kind of power offset value correcting device and method |
| CN107807275B (en) * | 2016-09-08 | 2024-04-12 | 广东美的生活电器制造有限公司 | Power deviation value correction device and method |
| CN107801274A (en) * | 2017-11-10 | 2018-03-13 | 深圳市垅运照明电器有限公司 | A kind of constant power output LED drive power and its constant power output method |
| CN109947170A (en) * | 2019-03-22 | 2019-06-28 | 九阳股份有限公司 | A kind of power stability method of insulating pot |
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