CN103926964A - Novel intelligentized constant current control method - Google Patents
Novel intelligentized constant current control method Download PDFInfo
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- CN103926964A CN103926964A CN201310468316.9A CN201310468316A CN103926964A CN 103926964 A CN103926964 A CN 103926964A CN 201310468316 A CN201310468316 A CN 201310468316A CN 103926964 A CN103926964 A CN 103926964A
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- constant current
- current
- mcu
- control method
- reference value
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005070 sampling Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- Control Of Voltage And Current In General (AREA)
Abstract
The invention provides a novel intelligentized constant current control method. The method includes the following steps: a), setting an output current reference value; b), sampling current to be controlled; c), comparing sampled current signals with the reference value in an MCU (microprogrammed control unit); d), outputting corresponding PWM (pulse width modulation) signals according to comparison values by the MCU. By the method, flexibility in display and control of constant current output of a product can be realized through software and an upper computer, hardware scale and size of the product can be reduced, product cost can be lowered, and controllability and displayability of constant current output can be realized.
Description
Technical field
The invention belongs to industrial control automation field, relate in particular to a kind of Novel intelligent constant current control method.
Background technology
In traditional industry is controlled, for the constant current output of electric current, control, be to realize by hardware circuit mostly.But in some special practical occasions, pure hardware circuit, no matter from volume, cost or control dirigibility aspect, is all difficult to satisfactory.
Summary of the invention
The invention provides a kind of Novel intelligent constant current control method, the electric current of required constant current output is carried out to current sample, and amplify by amplifier, then circuit filtering is delivered to intelligent control unit (MCU) after filtering.By intelligent software, by MCU, output current signal is judged, MCU exports corresponding PWM waveform according to different size of current, controls constant current output after after filtering as current reference, reaches the object of intelligent constant current output.Specifically, technical scheme that the present invention adopts is as follows:
A Novel intelligent constant current control method, is characterized in that, comprises the following steps:
A) set output current reference value;
B) electric current that will control is sampled, sampled signal sends MCU to after amplifying;
C) at MCU, sample rate current signal and reference value are compared;
D) MCU exports corresponding pwm signal according to fiducial value.
Preferably, after step c), also comprise step c ') according to fiducial value to host computer output display signal, for showing current size of current.
Preferably, step a) comprises the following steps:
A1) on host computer, manually provide reference value;
A2) host computer sends to MCU by this reference value.
Can to electric current, regulate based on software interface easily row directly perceived.
Beneficial effect: the present invention adopts MCU to process current signal, utilize MCU output PWM as current reference, with host computer, by MCU, control current rise time, and show in real time size of current at host computer, control in time electric current output, easily row directly perceived, by software and host computer, realize the flexible demonstration of product constant current output and control, can adjust different constant current outputs according to customer demand.
Use the intelligent constant current technology of MCU, can dwindle hardware size and the volume of product, reduce cost of products, and can realize the controlled of constant current output and can show.
Accompanying drawing explanation
Fig. 1 is the logical diagram of Novel intelligent constant current control method of the present invention.
Embodiment
Below in conjunction with accompanying drawing, describe the present invention in detail.
The present invention is a kind of intelligent constant current control method based on software.Be different from traditional industry control and adopt hardware circuit to control electric current, the present invention utilizes the numeral of microprocessor to export circuit is controlled, and is therefore swift in response, and easily regulates, and owing to saving a plurality of hardware devices, the volume of controller is reduced.
Referring to Fig. 1, show the logical diagram of method of the present invention.In the method for the invention, can first to output current value, set, on this software interface being set on host computer, carry out, therefore very directly perceived, adopt the keyboard of computing machine directly to input particular value, the value of therefore setting is also very accurate.In addition, sample circuit is sampled to current value, and after sampled signal is amplified, circuit filtering is delivered to intelligent control unit (MCU) after filtering.Host computer also sends this setting value to MCU, and MCU compares sampled signal and this setting value.Result is relatively returned to host computer on the one hand again, for showing current current value, exports corresponding PWM waveform on the one hand according to this fiducial value, is used for controlling constant current output after after filtering as current reference, reaches the object of intelligent constant current output.
By reference to the accompanying drawings embodiments of the present invention are described in detail above, but the invention is not restricted to above-mentioned embodiment, in the ken possessing at affiliated technical field those of ordinary skill, can also under the prerequisite that does not depart from aim of the present invention, make a variety of changes.
Claims (3)
1. a Novel intelligent constant current control method, is characterized in that, comprises the following steps:
A) set output current reference value;
B) electric current that will control is sampled, sampled signal sends MCU to after amplifying;
C) at MCU, sample rate current signal and reference value are compared;
D) MCU exports corresponding pwm signal according to fiducial value.
2. Novel intelligent constant current control method as claimed in claim 1, is characterized in that, after step c), also comprises step c ') according to fiducial value to host computer output display signal, for showing current size of current.
3. Novel intelligent constant current control method as claimed in claim 1 or 2, is characterized in that, step a) comprises the following steps:
A1) on host computer, manually provide reference value;
A2) host computer sends to MCU by this reference value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310468316.9A CN103926964A (en) | 2013-10-10 | 2013-10-10 | Novel intelligentized constant current control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310468316.9A CN103926964A (en) | 2013-10-10 | 2013-10-10 | Novel intelligentized constant current control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103926964A true CN103926964A (en) | 2014-07-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310468316.9A Pending CN103926964A (en) | 2013-10-10 | 2013-10-10 | Novel intelligentized constant current control method |
Country Status (1)
| Country | Link |
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| CN (1) | CN103926964A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112390198A (en) * | 2019-09-25 | 2021-02-23 | 郑州嘉晨电器有限公司 | Method for screening lifting current in vehicle safety operation |
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| US4386311A (en) * | 1981-09-08 | 1983-05-31 | Motorola Inc. | Dual slope pulse width modulation regulator and control system |
| CN1265479A (en) * | 1998-12-24 | 2000-09-06 | 英特赛尔公司 | DC-DC inverter having inductive current test and related method |
| CN101854071A (en) * | 2010-06-29 | 2010-10-06 | 沈阳和信恒实业有限公司 | Intelligent multi-stage constant current charger |
| CN201830508U (en) * | 2010-09-03 | 2011-05-11 | 深圳茂硕电源科技股份有限公司 | High-sensitivity split power carrier light-emitting diode (LED) driving power supply and driving constant current system |
| CN102207740A (en) * | 2011-03-30 | 2011-10-05 | 河海大学常州校区 | Isolated multipath 4-20mA-current signal output circuit |
| CN102404920A (en) * | 2011-12-03 | 2012-04-04 | 南京普天大唐信息电子有限公司 | Intelligent constant-current power supply device capable of adjusting output current |
| CN103021735A (en) * | 2012-12-11 | 2013-04-03 | 福州大学 | Alternating current contactor intelligent control module with high speed pulse width modulation function |
-
2013
- 2013-10-10 CN CN201310468316.9A patent/CN103926964A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4386311A (en) * | 1981-09-08 | 1983-05-31 | Motorola Inc. | Dual slope pulse width modulation regulator and control system |
| CN1265479A (en) * | 1998-12-24 | 2000-09-06 | 英特赛尔公司 | DC-DC inverter having inductive current test and related method |
| CN101854071A (en) * | 2010-06-29 | 2010-10-06 | 沈阳和信恒实业有限公司 | Intelligent multi-stage constant current charger |
| CN201830508U (en) * | 2010-09-03 | 2011-05-11 | 深圳茂硕电源科技股份有限公司 | High-sensitivity split power carrier light-emitting diode (LED) driving power supply and driving constant current system |
| CN102207740A (en) * | 2011-03-30 | 2011-10-05 | 河海大学常州校区 | Isolated multipath 4-20mA-current signal output circuit |
| CN102404920A (en) * | 2011-12-03 | 2012-04-04 | 南京普天大唐信息电子有限公司 | Intelligent constant-current power supply device capable of adjusting output current |
| CN103021735A (en) * | 2012-12-11 | 2013-04-03 | 福州大学 | Alternating current contactor intelligent control module with high speed pulse width modulation function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112390198A (en) * | 2019-09-25 | 2021-02-23 | 郑州嘉晨电器有限公司 | Method for screening lifting current in vehicle safety operation |
| CN112390198B (en) * | 2019-09-25 | 2022-01-18 | 河南嘉晨智能控制股份有限公司 | Method for screening lifting current in vehicle safety operation |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140716 |