CN203759575U - Numerical control direct current source - Google Patents
Numerical control direct current source Download PDFInfo
- Publication number
- CN203759575U CN203759575U CN201420126031.7U CN201420126031U CN203759575U CN 203759575 U CN203759575 U CN 203759575U CN 201420126031 U CN201420126031 U CN 201420126031U CN 203759575 U CN203759575 U CN 203759575U
- Authority
- CN
- China
- Prior art keywords
- modular converter
- module
- current source
- direct current
- control module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Analogue/Digital Conversion (AREA)
Abstract
The utility model relates to a numerical control direct current source which comprises a single-chip microcomputer control module, a V/I conversion module, a display module, a D/A conversion module, an A/D conversion module, a stabilized voltage source and a load. The stabilized voltage source supplies power to the single-chip microcomputer control module, the V/I conversion module, the D/A conversion module and the A/D conversion module, the D/A conversion module is connected to a peripheral I/O interface of the single-chip microcomputer control module through a special chip to collect signals, the signals are transmitted to the V/I conversion module to be processed, then stable currents are output and transmitted to the A/D conversion module, the output currents are then displayed on the display module through the single-chip microcomputer control module, the single-chip microcomputer control module is connected with a keyboard, and the output end of the V/I conversion module is connected with the load. The numerical control direct current source is simple in circuit and high in efficiency, a single-chip microcomputer is adopted as master control, an A/D chip and a D/A chip which are high in precision and quality are used, in this way, the requirements for high flexibility and high precision are met, and using demands are met.
Description
Technical field
The utility model relates to DC current source domain, relates in particular to a kind of Digital Control Direct Current Source that adopts singlechip technology.
Background technology
Constant-current supply is one of conventional equipment of electronic technology, is widely used in the fields such as production, life.DCPS digitally controlled power source is from just real the growing up eighties, during the power electronics theory of system start to set up.These theories provide a good basis for its development afterwards.But its product exists numerical control degree not reach the shortcoming that requirement, resolution are not high, power density is lower, reliability is poor.Practice shows, the current source that circuit is simple, dirigibility is high, precision is high, efficiency is high is for required now.
Utility model content
The purpose of this utility model is in order to overcome the deficiencies in the prior art, a kind of Digital Control Direct Current Source is provided, this current source be take AT89S52 single-chip microcomputer as core, use 12 D/A conversion chip TLV5618 of high-quality and high-precision 16 A/D conversion chip AD7705 through adding V/I change-over circuit module, formed simple in structure, high-performance current that dirigibility is high, precision is high source.
The utility model is to be achieved through the following technical solutions:
A kind of Digital Control Direct Current Source, comprise single chip control module, V/I modular converter, display module, D/A modular converter, A/D modular converter, stabilized voltage supply, load, described stabilized voltage supply is single chip control module, V/I modular converter, D/A modular converter and the power supply of A/D modular converter, described D/A modular converter is connected to the peripheral I/O interface of single chip control module collection signal by special-purpose chip, signal is passed to the electric current of stable output after V/I module processing, pass to A/D modular converter, through single chip control module, the electric current of output is presented on display module again, described single chip control module is connected with keyboard, the output terminal of described V/I modular converter connects load.
As optimal technical scheme of the present utility model, described single chip control module adopts the single-chip microcomputer of AT89S52 model.
As optimal technical scheme of the present utility model, described D/A modular converter adopts the analog-digital chip TLV5618 of 12.
As optimal technical scheme of the present utility model, described A/D modular converter adopts the modulus conversion chip A/D7705 of 16.
As optimal technical scheme of the present utility model, described display module adopts 19264D Chinese character image matrix liquid-crystal display screen.
This current source be take AT89S52 single-chip microcomputer as core, the peripheral I/O mouth that D/A and A/D modular converter are connected on AT89S52 single-chip microcomputer by special-purpose chip is used for collection signal, the signal collecting is passed to the circuit in V/I modular converter, after processing, the electric current of stable output, is presented at the electric current of output on display module.By the chip input digital quantity changing in D/A modular converter, change output voltage values, the voltage of the circuit input end in V/I modular converter is 0 to 10V, by+12V, through potentiometer dividing potential drop, obtained, amplifier one forms inverting amplifier, the voltage of output terminal is 0 to-1.6V, by amplifier and resistance again output current be that 4mA is to 20mA.Play the effect of steady current and strengthened carrying load ability.Through V/I modular converter, realize the variation of output current.Precision aspect adopts hardware-software to control simultaneously: hardware using closed-loop control, utilizes analog-digital chip real-time sampling output current to realize feedback circuit; Software adopts unique algorithm compensation to guarantee the high precision of electric current output.This Digital Control Direct Current Source output current scope is 200mA～2000mA, and having electric current can be preset, and 1mA stepping is shown to the functions such as definite value and measured value simultaneously.
Described stabilized voltage supply adopt integrated 7805,7812,7912 the obtain respectively+5V of three-terminal voltage-stabilizing and ± burning voltage of 12V, then LM7812 is added to power tube form and expand current circuit outward, the electric current that can provide more than 3A is provided.
Compared with prior art, the beneficial effects of the utility model are: the utility model circuit is simple, efficiency is high, adopt single-chip microcomputer to do master control, and have used high precision, the A/D of high-quality, D/A chip, thereby realize the requirement that dirigibility is high, precision is high, meet and use needs.
Accompanying drawing explanation
Fig. 1 is principle schematic of the present utility model.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 1, Fig. 1 is principle schematic of the present utility model.
Described a kind of Digital Control Direct Current Source, comprise single chip control module, V/I modular converter, display module, D/A modular converter, A/D modular converter, stabilized voltage supply, load, described stabilized voltage supply is single chip control module, V/I modular converter, D/A modular converter and the power supply of A/D modular converter, described D/A modular converter is connected to the peripheral I/O interface of single chip control module collection signal by special-purpose chip, signal is passed to the electric current of stable output after V/I module processing, pass to A/D modular converter, through single chip control module, the electric current of output is presented on display module again, described single chip control module is connected with keyboard, described keyboard is used for arranging systematic parameter, the output terminal of described V/I modular converter connects load.
Described single chip control module adopts the single-chip microcomputer of AT89S52 model, described D/A modular converter adopts the analog-digital chip TLV5618 of 12, described A/D modular converter adopts the modulus conversion chip A/D7705 of 16, and described display module adopts 19264D Chinese character image matrix liquid-crystal display screen.
The utility model adopts AT89S52 single-chip microcomputer as the control module of complete machine, changes output voltage values, thereby the base voltage of output power pipe is changed by the input digital quantity changing in D/A modular converter, indirectly changes the size of output current.In order to make system possess the size that detects actual output current value, output current can be carried out to analog to digital conversion through D/A modular converter, indirectly with single-chip microcomputer, in real time electric current is sampled, then carry out data processing and demonstration.
As follows about operating process of the present utility model:
First by Keysheet module, set stepping required value, passing to single-chip microcomputer uses unique algorithm to add that modulus, D/A converter module export approaching desired value, pass through again V/I modular converter, described V/I modular converter can be changed out the current value that operator wants on the one hand, can also make on the other hand the electric current of output very stable, finally the electric current of high-quality be exported to load.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. a Digital Control Direct Current Source, it is characterized in that, comprise single chip control module, V/I modular converter, display module, D/A modular converter, A/D modular converter, stabilized voltage supply, load, described stabilized voltage supply is single chip control module, V/I modular converter, D/A modular converter and the power supply of A/D modular converter, described D/A modular converter is connected to the peripheral I/O interface of single chip control module collection signal by special-purpose chip, signal is passed to the electric current of stable output after V/I module processing, pass to A/D modular converter, through single chip control module, the electric current of output is presented on display module again, described single chip control module is connected with keyboard, the output terminal of described V/I modular converter connects load.
2. a kind of Digital Control Direct Current Source according to claim 1, is characterized in that, described single chip control module adopts the single-chip microcomputer of AT89S52 model.
3. a kind of Digital Control Direct Current Source according to claim 1, is characterized in that, described D/A modular converter adopts the analog-digital chip TLV5618 of 12.
4. a kind of Digital Control Direct Current Source according to claim 1, is characterized in that, described A/D modular converter adopts the modulus conversion chip A/D7705 of 16.
5. a kind of Digital Control Direct Current Source according to claim 1, is characterized in that, described display module adopts 19264D Chinese character image matrix liquid-crystal display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420126031.7U CN203759575U (en) | 2014-03-20 | 2014-03-20 | Numerical control direct current source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420126031.7U CN203759575U (en) | 2014-03-20 | 2014-03-20 | Numerical control direct current source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203759575U true CN203759575U (en) | 2014-08-06 |
Family
ID=51254828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420126031.7U Expired - Fee Related CN203759575U (en) | 2014-03-20 | 2014-03-20 | Numerical control direct current source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203759575U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793681A (en) * | 2015-04-15 | 2015-07-22 | 广州中大微电子有限公司 | Numerically-controlled linear voltage regulator power supply circuit and method |
| CN105629885A (en) * | 2015-12-23 | 2016-06-01 | 芜湖日升重型机床有限公司 | Application of VUSB technology in numerical control machine tool power supply |
| CN106950523A (en) * | 2017-03-17 | 2017-07-14 | 复旦大学 | Rotating excitation field based on voltage controlled current source realizes device and method |
| CN107798842A (en) * | 2017-11-07 | 2018-03-13 | 北京科技大学 | A kind of current signal long range radio transmissions method and its system |
| CN113204260A (en) * | 2021-04-30 | 2021-08-03 | 武汉中科牛津波谱技术有限公司 | Multi-channel high-precision current source and working method thereof |
| CN113359920A (en) * | 2021-06-16 | 2021-09-07 | 广东电网有限责任公司 | High-stability direct current source and control system |
| CN114546012A (en) * | 2022-01-25 | 2022-05-27 | 杭州春来科技有限公司 | Amplifier-based adjustable voltage-current conversion circuit and signal acquisition system |
-
2014
- 2014-03-20 CN CN201420126031.7U patent/CN203759575U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793681A (en) * | 2015-04-15 | 2015-07-22 | 广州中大微电子有限公司 | Numerically-controlled linear voltage regulator power supply circuit and method |
| CN105629885A (en) * | 2015-12-23 | 2016-06-01 | 芜湖日升重型机床有限公司 | Application of VUSB technology in numerical control machine tool power supply |
| CN106950523A (en) * | 2017-03-17 | 2017-07-14 | 复旦大学 | Rotating excitation field based on voltage controlled current source realizes device and method |
| CN107798842A (en) * | 2017-11-07 | 2018-03-13 | 北京科技大学 | A kind of current signal long range radio transmissions method and its system |
| CN113204260A (en) * | 2021-04-30 | 2021-08-03 | 武汉中科牛津波谱技术有限公司 | Multi-channel high-precision current source and working method thereof |
| CN113359920A (en) * | 2021-06-16 | 2021-09-07 | 广东电网有限责任公司 | High-stability direct current source and control system |
| CN114546012A (en) * | 2022-01-25 | 2022-05-27 | 杭州春来科技有限公司 | Amplifier-based adjustable voltage-current conversion circuit and signal acquisition system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203759575U (en) | Numerical control direct current source | |
| CN107017795B (en) | Pulse-generator circuit and its control method | |
| CN205721464U (en) | A kind of analog voltage output circuit | |
| CN207910744U (en) | A kind of signal processing circuit based on quartz resonance | |
| CN206072476U (en) | A kind of valve control device adjusted for fluid flow | |
| CN205720332U (en) | A kind of multifunction programable signal generator | |
| CN104656034A (en) | DC electronic load | |
| CN203387422U (en) | High-efficiency numerical-control voltage-stabilized power supply | |
| CN107979266B (en) | Single-inductance double-output switch converters voltage-type-capacitance current ripple mixing control method and device | |
| CN208622301U (en) | Signal processing and display system | |
| CN202998611U (en) | A light adjusting circuit of a LED light supplementing lamp | |
| CN207691191U (en) | Laser power self-checking device | |
| CN203616921U (en) | Tandem type regulated power supply circuit for teaching | |
| CN202661912U (en) | Portable programmable power supply device | |
| CN208092523U (en) | A kind of programmable logic controller (PLC) based on multichannel ADC acquisitions | |
| CN204440215U (en) | A kind of adjustable DC constant current source generation device based on microcontroller | |
| CN202177843U (en) | LCD intelligent current source | |
| CN207675826U (en) | A kind of power line carrier module transmission size of current detection device | |
| CN204270029U (en) | Pid parameter generator | |
| CN207096736U (en) | A kind of voltage-controlled potentiometer regulator control system | |
| CN204179960U (en) | A kind of novel transmitter | |
| CN202563298U (en) | Adjustable electronic load device | |
| CN205185239U (en) | Electric capacity measurement system | |
| CN204741405U (en) | A converting circuit frequently presses for converter | |
| CN207799382U (en) | A kind of rail mounted multi-path digital transmitter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20150320 |
|
| EXPY | Termination of patent right or utility model |