CN104536323A - Numerical control constant-current source device based on ARM9 - Google Patents
Numerical control constant-current source device based on ARM9 Download PDFInfo
- Publication number
- CN104536323A CN104536323A CN201410848820.6A CN201410848820A CN104536323A CN 104536323 A CN104536323 A CN 104536323A CN 201410848820 A CN201410848820 A CN 201410848820A CN 104536323 A CN104536323 A CN 104536323A
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- Prior art keywords
- current source
- constant
- arm9
- input end
- circuit
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/058—Safety, monitoring
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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
- G05F1/575—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 characterised by the feedback circuit
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/16—Plc to applications
- G05B2219/163—Domotique, domestic, home control, automation, smart, intelligent house
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Electromagnetism (AREA)
- Radar, Positioning & Navigation (AREA)
- Control Of Voltage And Current In General (AREA)
Abstract
The invention discloses a numerical control constant-current source device based on an ARM9. The numerical control constant-current source device comprises an ARM9 single-chip microcomputer, a PLC, a keyboard, a DC/DC converter, a constant-current source circuit, a current output circuit and an ADC conversion circuit. The numerical control constant-current source device is characterized in that the output end of the ARM9 single-chip microcomputer is connected with the input end of the PLC, the output end of the PLC is connected with the input end of the DC/DC converter, the output end of the DC/DC converter is connected with the input end of the constant-current source circuit, the output end of the constant-current source circuit is connected with the input end of the current output circuit and the input end of the ADC conversion circuit, the output end of the ADC conversion circuit is connected with the input end of the ARM9 single-chip microcomputer, and the keyboard is connected with the input end of the ARM9 single-chip microcomputer. The numerical control constant-current source device can carry out adjustment and control according to a set output value of a constant-current source, and has the advantages of being high in response speed and constant-current precision and large in output current adjusting range.
Description
Technical field
The present invention relates to a kind of numerical control constant-current source device, be specifically related to based on ARM9 numerical control constant-current source device.
Background technology
Constant current source is that a kind of extraneous electric network source produces fluctuation or electric network impedance characteristic changes, and still can keep constant current source by output current.Mainly for detection of electrothermal relay, breaker of plastic casing, small-sized short-circuiting device and need production occasion such as setting rated current, action current, short circuit current protection etc., there is important actual application value.Traditional constant current source general operational amplifier and triode again form, but device is comparatively large by the impact of temperature, adds the existence of local nonlinearity, defeated not out of stable constant current source.So adopt full-bridge rectification to add capacitor filtering output constant current source, can meet the transient response of electric current preferably, but can not meet the requirement of big current, and precision is lower, power consumption is higher.Therefore, R & D design goes out one and has real-time follow-up effect, exports high precision numerical control constant current, has important practical significance.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of based on ARM9 numerical control constant-current source device, can according to the setting output valve regulable control voluntarily of constant current source, has fast response time, constant current accuracy is high, output current range of adjustment is large advantage.
Based on ARM9 numerical control constant-current source device, comprise ARM9 single-chip microcomputer, PLC, keyboard, DC/DC transducer, constant-current source circuit, current output circuit, ADC change-over circuit, the output terminal of described ARM9 single-chip microcomputer connects the input end of PLC, the output terminal of PLC connects the input end of DC/DC transducer, the output terminal of DC/DC transducer connects the input end of constant-current source circuit, the output terminal of constant-current source circuit connects the input end of current output circuit and ADC change-over circuit respectively, the output terminal of ADC change-over circuit connects the input end of ARM9 single-chip microcomputer, described keyboard connects the input end of ARM9 single-chip microcomputer.
Further, the output terminal of described ARM9 single-chip microcomputer is also connected with display unit.
Further, described display unit comprises light-emitting diode display and LED display lamp, and light-emitting diode display is used for output current value between display setting value and real time instant electric discharge; LED display lamp can show its brightness according to current output value, be electric current in order to show real-time output too low or too high time play suggesting effect.
Further, also operational amplifier is connected with between described constant-current source circuit and ADC change-over circuit.
Beneficial effect of the present invention is: the output current value that the present invention is arranged by keyboard, data are sent into display display current set value by ARM9 single-chip microcomputer, data are sent into PLC simultaneously, control signal is sent into the input end of DC/DC transducer by PLC, the voltage that DC/DC transducer exports as the control signal of Numerical Controlled Current Source output current, and then exports numerical control adjustable DC constant current source; This signal is converted to digital signal by ADC, and these data are read in internal data memory by ARM9 single-chip microcomputer, by the feedback element of digital quantity form, makes electric current more stable, then sends into display and show, and sees predetermined value and output valve by display.
Accompanying drawing explanation
Fig. 1 is the structured flowchart that the present invention is based on ARM9 numerical control constant-current source device.
Embodiment
Accompanying drawing discloses concrete structure of the present invention without limitation, and below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, based on ARM9 numerical control constant-current source device, comprise ARM9 single-chip microcomputer, PLC, keyboard, DC/DC transducer, constant-current source circuit, current output circuit, ADC change-over circuit, the output terminal of described ARM9 single-chip microcomputer connects the input end of PLC, the output terminal of PLC connects the input end of DC/DC transducer, the output terminal of DC/DC transducer connects the input end of constant-current source circuit, the output terminal of constant-current source circuit connects the input end of current output circuit and ADC change-over circuit respectively, the output terminal of ADC change-over circuit connects the input end of ARM9 single-chip microcomputer, described keyboard connects the input end of ARM9 single-chip microcomputer.The output terminal of described ARM9 single-chip microcomputer is also connected with display unit.Described display unit comprises light-emitting diode display and LED display lamp.Also operational amplifier is connected with between described constant-current source circuit and ADC change-over circuit.
Claims (4)
1. based on ARM9 numerical control constant-current source device, comprise ARM9 single-chip microcomputer, PLC, keyboard, DC/DC transducer, constant-current source circuit, current output circuit, ADC change-over circuit, it is characterized in that: the output terminal of described ARM9 single-chip microcomputer connects the input end of PLC, the output terminal of PLC connects the input end of DC/DC transducer, the output terminal of DC/DC transducer connects the input end of constant-current source circuit, the output terminal of constant-current source circuit connects the input end of current output circuit and ADC change-over circuit respectively, the output terminal of ADC change-over circuit connects the input end of ARM9 single-chip microcomputer, described keyboard connects the input end of ARM9 single-chip microcomputer.
2. according to claim 1 based on ARM9 numerical control constant-current source device, it is characterized in that: the output terminal of described ARM9 single-chip microcomputer is also connected with display unit.
3. according to claim 2 based on ARM9 numerical control constant-current source device, it is characterized in that: described display unit comprises light-emitting diode display and LED display lamp.
4. according to claim 1 based on ARM9 numerical control constant-current source device, it is characterized in that: between described constant-current source circuit and ADC change-over circuit, be also connected with operational amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410848820.6A CN104536323A (en) | 2014-12-31 | 2014-12-31 | Numerical control constant-current source device based on ARM9 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410848820.6A CN104536323A (en) | 2014-12-31 | 2014-12-31 | Numerical control constant-current source device based on ARM9 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104536323A true CN104536323A (en) | 2015-04-22 |
Family
ID=52851867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410848820.6A Pending CN104536323A (en) | 2014-12-31 | 2014-12-31 | Numerical control constant-current source device based on ARM9 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104536323A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938961A (en) * | 2012-12-06 | 2013-02-20 | 广东威创视讯科技股份有限公司 | LED (Light-Emitting Diode) constant-current source |
| CN103826354A (en) * | 2012-11-19 | 2014-05-28 | 拓普盛达信息技术(大连)有限公司 | LED constant current source |
| CN203838587U (en) * | 2014-02-26 | 2014-09-17 | 浙江海洋学院 | Numerical-control direct current source |
| CN204302696U (en) * | 2014-12-31 | 2015-04-29 | 桂林铭瑶电子科技有限公司 | based on ARM9 numerical control constant-current source device |
-
2014
- 2014-12-31 CN CN201410848820.6A patent/CN104536323A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103826354A (en) * | 2012-11-19 | 2014-05-28 | 拓普盛达信息技术(大连)有限公司 | LED constant current source |
| CN102938961A (en) * | 2012-12-06 | 2013-02-20 | 广东威创视讯科技股份有限公司 | LED (Light-Emitting Diode) constant-current source |
| CN203838587U (en) * | 2014-02-26 | 2014-09-17 | 浙江海洋学院 | Numerical-control direct current source |
| CN204302696U (en) * | 2014-12-31 | 2015-04-29 | 桂林铭瑶电子科技有限公司 | based on ARM9 numerical control constant-current source device |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150422 |
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| WD01 | Invention patent application deemed withdrawn after publication |