CN110221646A - A kind of output power and the constant method and device of electric current of holding load - Google Patents
A kind of output power and the constant method and device of electric current of holding load Download PDFInfo
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- CN110221646A CN110221646A CN201910610983.3A CN201910610983A CN110221646A CN 110221646 A CN110221646 A CN 110221646A CN 201910610983 A CN201910610983 A CN 201910610983A CN 110221646 A CN110221646 A CN 110221646A
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- load
- output power
- electric current
- input voltage
- resistance value
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000012544 monitoring process Methods 0.000 claims abstract description 29
- 230000008859 change Effects 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The embodiment of the invention discloses a kind of output power for keeping load and the constant method and devices of electric current, which comprises whether the input voltage of load described in real-time monitoring changes；When the input voltage for monitoring the load changes, current input voltage is obtained；According to the output power of the preset load and electric current and the current input voltage, the resistance value of the load is adjusted, to keep output power and the electric current of the preset load constant.Whether the input voltage that the present invention is loaded by real-time monitoring changes, and is adjusted according to resistance value of the result of monitoring to load, so that the output power and electric current of load are constant.
Description
Technical field
The present embodiments relate to electronic technology fields, and in particular to it is a kind of keep load output power and electric current it is constant
Method and device.
Background technique
Power consumption element inside load is resistance, so load itself is influenced (P=U by Ohm's law2/ R), i.e., it is negative
The output power of load can by input voltage influenced, such as AC220V, 10KW load resistance be 4.84 ohm of (R=U2/
P), when input voltage is voltage rating 220V, the output power of equipment is 10KW, but when input voltage becomes 110V, this
When equipment output power be 2.5KW so that load output power there is larger fluctuation, in the process of running may
Serious influence is caused on load, similarly, the electric current of load equally can by input voltage influenced.
Summary of the invention
For this purpose, the embodiment of the present invention provides the output power and the constant method and device of electric current of a kind of holding load, with
It solves the problems, such as to cause the output power of load and electric current that larger fluctuation occurs since voltage changes in the prior art.
To achieve the goals above, the embodiment of the present invention provides the following technical solutions:
According to a first aspect of the embodiments of the present invention, provide it is a kind of keep load output power and the constant side of electric current
Method, which comprises whether the input voltage of load described in real-time monitoring changes；
When the input voltage for monitoring the load changes, current input voltage is obtained；
According to the output power of the preset load of central processing unit and electric current and the current input electricity
Pressure, is adjusted the resistance value of the load, to keep output power and the electric current of the preset load constant.
Further, the resistance of the load connects relay；
The resistance value to the load is adjusted, and is specifically included:
The relay realization is adjusted to adjust the resistance value of the load.
Further, the relay is the gear relay for being provided with multiple and different specification loads.
Further, after the resistance value to the load is adjusted, the method also includes:
Record the resistance value of presently described load, and by resistance value, output power and the electricity of the presently described load
Stream is sent to display interface.
Further, when monitoring that the input voltage of the load there is no variation, then continues to execute the real-time prison
The step of whether input voltage of the load changes surveyed.
Further, before whether the input voltage of load described in the real-time monitoring changes, the method is also wrapped
It includes:
Preset the output power and electric current of the load.
According to a second aspect of the embodiments of the present invention, a kind of output power and the constant dress of electric current for keeping load is provided
It sets, described device includes:
Whether monitoring unit, the input voltage for load described in real-time monitoring change；
Acquiring unit obtains current input voltage for changing when the input voltage for monitoring the load；
Adjustment unit, for according to the output power of the preset load and electric current and the current input
Voltage is adjusted the resistance value of the load, to keep output power and the electric current of the preset load constant.
Further, the resistance of the load connects relay；
The adjustment unit, is specifically used for:
The relay realization is adjusted to adjust the resistance value of the load.
Further, the relay is the gear relay for being provided with multiple and different specification loads.
Further, described device further include:
Recording unit, for recording the resistance value of presently described load；
Transmission unit, for resistance value, output power and the electric current of the presently described load to be sent to display circle
Face.
The embodiment of the present invention has the advantages that whether the present invention is become by the input voltage that real-time monitoring loads
Change, and be adjusted according to resistance value of the result of monitoring to load, so that the output power and electric current of load are constant.
Detailed description of the invention
It, below will be to embodiment party in order to illustrate more clearly of embodiments of the present invention or technical solution in the prior art
Formula or attached drawing needed to be used in the description of the prior art are briefly described.It should be evident that the accompanying drawings in the following description is only
It is merely exemplary, it for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing of offer, which is extended, obtains other implementation attached drawings.
Structure depicted in this specification, ratio, size etc., only to cooperate the revealed content of specification, for
Those skilled in the art understands and reads, and is not intended to limit the invention enforceable qualifications, therefore does not have technical
Essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing the function of the invention that can be generated
Under effect and the purpose that can reach, should all still it fall in the range of disclosed technology contents obtain and can cover.
Fig. 1 is a kind of output power for holding load that the embodiment of the present invention one provides and the process of the constant method of electric current
Schematic diagram；
Fig. 2 is the process of a kind of output power for keeping load and the constant method of electric current provided by Embodiment 2 of the present invention
Schematic diagram；
Fig. 3 is a kind of output power for holding load that the embodiment of the present invention three provides and the structure of the constant device of electric current
Schematic diagram.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily, it is clear that described embodiment is the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
Fig. 1 is a kind of output power for holding load that this specification embodiment one provides and the stream of the constant method of electric current
Journey schematic diagram, the flow diagram include:
Whether the input voltage of step S101, load described in real-time monitoring change.
Step S102 obtains current input voltage when the input voltage for monitoring the load changes.
Step S103, according to the output power of the preset load and electric current and the current input electricity
Pressure, is adjusted the resistance value of the load, to keep output power and the electric current of the preset load constant.
Fig. 2 is a kind of output power for holding load that this specification embodiment two provides and the stream of the constant method of electric current
Journey schematic diagram, the flow diagram include:
Step S201 presets the output power and electric current of the load.
In the step S201 of specification embodiment, user can by man-machine interface set load output power value with
Current value, and PLC central processing unit is sent an instruction to by touch screen.
Whether the input voltage of step S202, load described in real-time monitoring change, if so, S203 is thened follow the steps,
If it is not, then continuing to execute step S202.
It, can be using the input voltage of electrical parameter acquisition module measurement load in the step S202 of specification embodiment
Value, electrical parameter acquisition module can be the voltmeter or multimeter of measurement voltage value.
In the step S202 of specification embodiment, real-time monitoring load input voltage when, there are monitoring errors, that is, exist
Determine that input voltage does not change in a certain range, for example, error range is that 0.2V is being supervised when voltage value is 5V before monitoring
Measuring voltage value becomes being unable to decision voltage value when 5.2V being changed.
Step S203 obtains current input voltage.
Step S204, according to the output power of the preset load and electric current and the current input electricity
Pressure, is adjusted the resistance value of the load, to keep output power and the electric current of the preset load constant.
In the step S204 of specification embodiment, the resistance of load connects relay.Relay be provided with it is multiple not
The gear relay of same specification load.Different resistance values is adjusted by switching the gear of relay, to keep load
Output power is constant with electric current.The resistance value of load is adjusted, is specifically included: adjusting the relay and realizes to described negative
The resistance value of load adjusts.
After being adjusted to the resistance value of the load, the step of can also be performed: recording presently described load
Resistance value, and resistance value, output power and the electric current of the presently described load are sent to display interface.
The above process can be recycled constantly.
Load can control touch screen by PLC central processing unit.Replace traditional physical button and switch, improves
The service efficiency of equipment.
Fig. 3 is a kind of output power for holding load that this specification embodiment three provides and the knot of the constant device of electric current
Structure schematic diagram, the structural schematic diagram include: detection unit 1, acquiring unit 2, adjustment unit 3, recording unit 4 and generating unit
5。
Whether input voltage of the monitoring unit 1 for load described in real-time monitoring changes；
Acquiring unit 2 is used to obtain current input voltage when monitoring that the input voltage of the load changes；
Adjustment unit 3 is used for output power and electric current and the current input according to the preset load
Voltage is adjusted the resistance value of the load, to keep output power and the electric current of the preset load constant.
The resistance of load connects relay；
The adjustment unit 3 is specifically used for:
The relay realization is adjusted to adjust the resistance value of the load.
The relay is the gear relay for being provided with multiple and different specification loads.
Recording unit 4 is used to record the resistance value of presently described load；
Transmission unit 5 is used to for resistance value, output power and the electric current of the presently described load to be sent to display circle
Face.
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention are fallen within the scope of the claimed invention.
Claims (10)
1. a kind of output power for keeping load and the constant method of electric current, which is characterized in that the described method includes:
Whether the input voltage of load described in real-time monitoring changes；
When the input voltage for monitoring the load changes, current input voltage is obtained；
According to the output power of the preset load and electric current and the current input voltage, to the load
Resistance value is adjusted, to keep output power and the electric current of the preset load constant.
2. the output power according to claim 1 for keeping load and the constant method of electric current, which is characterized in that described negative
The resistance of load connects relay；
The resistance value to the load is adjusted, and is specifically included:
The relay realization is adjusted to adjust the resistance value of the load.
3. it is according to claim 2 keep load output power and the constant method of electric current, which is characterized in that it is described after
Electric appliance is the gear relay for being provided with multiple and different specification loads.
4. the output power according to claim 1 for keeping load and the constant method of electric current, which is characterized in that described right
After the resistance value of the load is adjusted, the method also includes:
The resistance value of presently described load is recorded, and the resistance value of the presently described load, output power and electric current are sent out
It send to display interface.
5. the output power according to claim 1 for keeping load and the constant method of electric current, which is characterized in that work as monitoring
To the load input voltage there is no variation, then continue to execute load described in the real-time monitoring input voltage whether
The step of changing.
6. the output power according to claim 1 for keeping load and the constant method of electric current, which is characterized in that the reality
When monitor the load input voltage whether change before, the method also includes:
Preset the output power and electric current of the load.
7. a kind of output power and the constant device of electric current for keeping load, which is characterized in that described device includes:
Whether monitoring unit, the input voltage for load described in real-time monitoring change；
Acquiring unit obtains current input voltage for changing when the input voltage for monitoring the load；
Adjustment unit, for the output power and electric current and the current input electricity according to the preset load
Pressure, is adjusted the resistance value of the load, to keep output power and the electric current of the preset load constant.
8. the output power and the constant device of electric current according to claim 7 for keeping load, which is characterized in that described negative
The resistance of load connects relay；
The adjustment unit, is specifically used for:
The relay realization is adjusted to adjust the resistance value of the load.
9. it is according to claim 8 keep load output power and the constant device of electric current, which is characterized in that it is described after
Electric appliance is the gear relay for being provided with multiple and different specification loads.
10. the output power and the constant device of electric current according to claim 7 for keeping load, which is characterized in that described
Device further include:
Recording unit, for recording the resistance value of presently described load；
Transmission unit, for resistance value, output power and the electric current of the presently described load to be sent to display interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910610983.3A CN110221646A (en) | 2019-07-08 | 2019-07-08 | A kind of output power and the constant method and device of electric current of holding load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910610983.3A CN110221646A (en) | 2019-07-08 | 2019-07-08 | A kind of output power and the constant method and device of electric current of holding load |
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| Publication Number | Publication Date |
|---|---|
| CN110221646A true CN110221646A (en) | 2019-09-10 |
Family
ID=67812186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910610983.3A Pending CN110221646A (en) | 2019-07-08 | 2019-07-08 | A kind of output power and the constant method and device of electric current of holding load |
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Citations (7)
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| CN104407655A (en) * | 2014-12-01 | 2015-03-11 | 北京机械设备研究所 | Resistance adjusting program control method |
| CN205720464U (en) * | 2016-04-22 | 2016-11-23 | 苏州大学 | Electronic load device |
| CN107271738A (en) * | 2017-07-17 | 2017-10-20 | 陕西晟思智能测控有限公司 | One kind hypervelocity electronic load system |
| CN208125779U (en) * | 2018-05-16 | 2018-11-20 | 四川百勒电气设备有限公司 | It is a kind of can high-low pressure switching proof load resistance bear the constant load circuit of power |
| CN109613331A (en) * | 2018-12-19 | 2019-04-12 | 广东电网有限责任公司 | A kind of alternating current charging stake detection load and method based on double load arrays |
| CN109975586A (en) * | 2019-04-12 | 2019-07-05 | 西安太乙电子有限公司 | A kind of constant current electronic load circuit and its working method |
| CN209928304U (en) * | 2019-07-08 | 2020-01-10 | 上海文顺电器有限公司 | Device for keeping output power and current of load constant |
-
2019
- 2019-07-08 CN CN201910610983.3A patent/CN110221646A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104407655A (en) * | 2014-12-01 | 2015-03-11 | 北京机械设备研究所 | Resistance adjusting program control method |
| CN205720464U (en) * | 2016-04-22 | 2016-11-23 | 苏州大学 | Electronic load device |
| CN107271738A (en) * | 2017-07-17 | 2017-10-20 | 陕西晟思智能测控有限公司 | One kind hypervelocity electronic load system |
| CN208125779U (en) * | 2018-05-16 | 2018-11-20 | 四川百勒电气设备有限公司 | It is a kind of can high-low pressure switching proof load resistance bear the constant load circuit of power |
| CN109613331A (en) * | 2018-12-19 | 2019-04-12 | 广东电网有限责任公司 | A kind of alternating current charging stake detection load and method based on double load arrays |
| CN109975586A (en) * | 2019-04-12 | 2019-07-05 | 西安太乙电子有限公司 | A kind of constant current electronic load circuit and its working method |
| CN209928304U (en) * | 2019-07-08 | 2020-01-10 | 上海文顺电器有限公司 | Device for keeping output power and current of load constant |
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