CN204302696U - based on ARM9 numerical control constant-current source device - Google Patents
based on ARM9 numerical control constant-current source device Download PDFInfo
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- CN204302696U CN204302696U CN201420865698.9U CN201420865698U CN204302696U CN 204302696 U CN204302696 U CN 204302696U CN 201420865698 U CN201420865698 U CN 201420865698U CN 204302696 U CN204302696 U CN 204302696U
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Abstract
The utility model discloses based on ARM9 numerical control constant-current source device, comprise ARM9 single-chip microcomputer, PLC, keyboard, DC/DC converter, constant-current source circuit, current output circuit, ADC change-over circuit, it is characterized in that: the output of described ARM9 single-chip microcomputer connects the input of PLC, the output of PLC connects the input of DC/DC converter, the output of DC/DC converter connects the input of constant-current source circuit, the output of constant-current source circuit connects the input of current output circuit and ADC change-over circuit respectively, the output of ADC change-over circuit connects the input of ARM9 single-chip microcomputer, described keyboard connects the input of ARM9 single-chip microcomputer.The utility model 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 adjustable range is large advantage.
Description
Technical field
The utility model relates to a kind of numerical control constant-current source device, is 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 tracking effect, exports high precision numerical control constant current, has important practical significance.
Utility model content
The technical problems to be solved in the utility model 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 adjustable range is large advantage.
Based on ARM9 numerical control constant-current source device, comprise ARM9 single-chip microcomputer, PLC, keyboard, DC/DC converter, constant-current source circuit, current output circuit, ADC change-over circuit, the output of described ARM9 single-chip microcomputer connects the input of PLC, the output of PLC connects the input of DC/DC converter, the output of DC/DC converter connects the input of constant-current source circuit, the output of constant-current source circuit connects the input of current output circuit and ADC change-over circuit respectively, the output of ADC change-over circuit connects the input of ARM9 single-chip microcomputer, described keyboard connects the input of ARM9 single-chip microcomputer.
Further, the output 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.
The beneficial effects of the utility model are: the output current value that the utility model 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 of DC/DC converter by PLC, the voltage that DC/DC converter 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 data 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 of the utility model based on ARM9 numerical control constant-current source device.
Detailed description of the invention
Accompanying drawing discloses concrete structure of the present utility model without limitation, and below in conjunction with accompanying drawing, the utility model 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 converter, constant-current source circuit, current output circuit, ADC change-over circuit, the output of described ARM9 single-chip microcomputer connects the input of PLC, the output of PLC connects the input of DC/DC converter, the output of DC/DC converter connects the input of constant-current source circuit, the output of constant-current source circuit connects the input of current output circuit and ADC change-over circuit respectively, the output of ADC change-over circuit connects the input of ARM9 single-chip microcomputer, described keyboard connects the input of ARM9 single-chip microcomputer.The output 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 converter, constant-current source circuit, current output circuit, ADC change-over circuit, it is characterized in that: the output of described ARM9 single-chip microcomputer connects the input of PLC, the output of PLC connects the input of DC/DC converter, the output of DC/DC converter connects the input of constant-current source circuit, the output of constant-current source circuit connects the input of current output circuit and ADC change-over circuit respectively, the output of ADC change-over circuit connects the input of ARM9 single-chip microcomputer, described keyboard connects the input 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 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 |
|---|---|---|---|
| CN201420865698.9U CN204302696U (en) | 2014-12-31 | 2014-12-31 | based on ARM9 numerical control constant-current source device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420865698.9U CN204302696U (en) | 2014-12-31 | 2014-12-31 | based on ARM9 numerical control constant-current source device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204302696U true CN204302696U (en) | 2015-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420865698.9U Expired - Fee Related CN204302696U (en) | 2014-12-31 | 2014-12-31 | based on ARM9 numerical control constant-current source device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204302696U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104536323A (en) * | 2014-12-31 | 2015-04-22 | 桂林铭瑶电子科技有限公司 | Numerical control constant-current source device based on ARM9 |
-
2014
- 2014-12-31 CN CN201420865698.9U patent/CN204302696U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104536323A (en) * | 2014-12-31 | 2015-04-22 | 桂林铭瑶电子科技有限公司 | Numerical control constant-current source device based on ARM9 |
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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: 20150429 Termination date: 20151231 |
|
| EXPY | Termination of patent right or utility model |