CN204595181U - Based on the device of TMS320F2812 DC Electronic Loads - Google Patents
Based on the device of TMS320F2812 DC Electronic Loads Download PDFInfo
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- CN204595181U CN204595181U CN201520191155.8U CN201520191155U CN204595181U CN 204595181 U CN204595181 U CN 204595181U CN 201520191155 U CN201520191155 U CN 201520191155U CN 204595181 U CN204595181 U CN 204595181U
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Abstract
The utility model discloses a kind of device based on TMS320F2812 DC Electronic Loads, it relates to electronic load technical field.It comprises power control module, current/voltage acquisition testing module, abnormality detection module, single-chip microcomputer, wireless communication module, voice alarm module, LCD display module, keyboard input module and power module, power control module is connected with single-chip microcomputer, load connects power control module by relay protection, power control module connects current/voltage acquisition testing module, current/voltage acquisition testing module connects single-chip microcomputer, single-chip microcomputer respectively with abnormality detection module, wireless communication module, voice alarm module, LCD display module, keyboard input module, power module connects, abnormality detection module feedback is connected to the relay protection end of load.The utility model structure is simple, reasonable in design, energy-conservation, volume is little, lightweight, precision is high, stability is strong.
Description
Technical field
The utility model relates to electronic load technical field, be specifically related to the device based on TMS320F2812 DC Electronic Loads.
Background technology
In today that science and technology is growing, a large amount of direct supplys is widely used in power electronic product, can direct supply be directly connected to the safety of product systems with accurate by reliability service, so more eager to the detection technique demand of high precision DC power supply, traditional technology acuracy is poor and stability is not high, and DC Electronic Loads has very strong advantage compared to traditional ohmic load mode in calibrating D.C. regulated power supply, based on this, relate to a kind of device based on TMS320F2812 DC Electronic Loads or necessary.
Utility model content
For the deficiency that prior art exists, the utility model object is to provide a kind of device based on TMS320F2812 DC Electronic Loads, and structure is simple, reasonable in design, energy-conservation, volume is little, lightweight, precision is high, stability is strong.
To achieve these goals, the utility model realizes by the following technical solutions: based on the device of TMS320F2812 DC Electronic Loads, comprise power control module, current/voltage acquisition testing module, abnormality detection module, single-chip microcomputer, wireless communication module, voice alarm module, LCD display module, keyboard input module and power module, power control module is connected with single-chip microcomputer, load connects power control module by relay protection, power control module connects current/voltage acquisition testing module, current/voltage acquisition testing module connects single-chip microcomputer, single-chip microcomputer respectively with abnormality detection module, wireless communication module, voice alarm module, LCD display module, keyboard input module, power module connects, abnormality detection module feedback is connected to the relay protection end of load, described power control module is for controlling driving power dissipation electric energy, current/voltage acquisition testing module is used for detection power load circuit real-time operating current voltage receipt, abnormality detection module is used for detection power load circuit operation exception situation, and connect DSP and control in real time, single-chip microcomputer adopts data signal processor TMS320F2812, wireless communication module is used for the communication between host computer and electronic load equipment, is convenient to the operation to electronic load and control.
As preferably, described current/voltage acquisition testing module is made up of current acquisition detection module and voltage acquisition detection module, current acquisition detection module, voltage acquisition detection module are all connected with single-chip microcomputer by A/D transition module interface, current acquisition detection module comprises sensor, and sensor adopts current sensor ACS712.
As preferably; described abnormality detection module is monitored unusual conditions such as the superpotential of tested power supply and excess current; relay is utilized to open the light the break-make protection circuit of control circuit audio alert; the quality of tested power supply is evaluated simultaneously, and display module display " high-quality ", " qualified " and " poor quality ".
As preferably, described power control module adopts power field effect pipe, the grid of power field effect pipe connects the first resistance to 6 pin of photoelectrical coupler and 7 pin, 5 pin of photoelectrical coupler connect the first electric capacity respectively, second electric capacity extremely is held, 2 pin of photoelectrical coupler connect the second resistance to 5V power end, 3 pin of photoelectrical coupler are connected with single-chip microcomputer by PWM interface, the drain electrode of power field effect pipe connects loading interfaces, the drain electrode of power field effect pipe connects the 3rd resistance successively, 4th resistance extremely is held, the node of the 3rd resistance and the 4th resistance centre connects voltage detecting end, the source electrode of power field effect pipe connects 3 pin of sensor respectively, 4 pin, 5 pin of sensor, 7 pin connect the 3rd electric capacity respectively, 4th electric capacity extremely is held, 6 pin of sensor connect the negative pole end of the 5th resistance to operational amplifier, positive pole termination the 6th resistance of operational amplifier extremely is held, negative pole termination the 8th resistance of operational amplifier is to the output terminal of operational amplifier, the negative pole end of operational amplifier connects the 7th resistance successively, 9th resistance, tenth resistance is to 5V power end, operational amplifier adopts dual operational amplifier LM358, power field effect pipe adopts power field effect pipe IRF530, photoelectrical coupler adopts door to drive photoelectrical coupler HCPL3120.
As preferably, described keyboard input module adopts 5 buttons, for model selection and current/voltage setting; LCD display module adopts LCD1286 liquid crystal display, shows operation information during model selection, and during system works, display system operational data and power quality are estimated.
The beneficial effects of the utility model: employing TMS320LF2812 is microprocessor, the analog to digital converter utilizing DSP inner integrated gathers electric current and magnitude of voltage, and export through processing controls D/A, control MOSFET drain-source current after power amplification is carried out in this output, thus make controll plant within the time required, reach the reference value of setting, more traditional single-chip microcomputer electronic load is compared, and has the features such as energy-conservation, volume is little, lightweight, precision is high, stability is strong.
Accompanying drawing explanation
The utility model is described in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is theory diagram of the present utility model;
Fig. 2 is the circuit diagram of the utility model power control module and current/voltage acquisition module.
Embodiment
The technological means realized for making the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with embodiment, setting forth the utility model further.
With reference to Fig. 1-2, this embodiment is by the following technical solutions: based on the device of TMS320F2812 DC Electronic Loads, comprise power control module 1, current/voltage acquisition testing module 2, abnormality detection module 3, single-chip microcomputer 4, wireless communication module 5, voice alarm module 6, LCD display module 7, keyboard input module 8 and power module 9, power control module 1 is connected with single-chip microcomputer 4, load connects power control module 1 by relay protection, power control module 1 connects current/voltage acquisition testing module 2, current/voltage acquisition testing module 2 connects single-chip microcomputer 4, single-chip microcomputer 4 respectively with abnormality detection module 3, wireless communication module 5, voice alarm module 6, LCD display module 7, keyboard input module 8, power module 9 connects, abnormality detection module 3 feedback link is to the relay protection end of load, described single-chip microcomputer 4 adopts data signal processor TMS320F2812.
It should be noted that, described power control module 1 adopts power field effect pipe VF, the grid of power field effect pipe VF connects 6 pin and 7 pin of the first resistance R1 to photoelectrical coupler U2, 5 pin of photoelectrical coupler U2 meet the first electric capacity C1 respectively, second electric capacity C2 extremely holds, 2 pin of photoelectrical coupler U2 connect the second resistance R2 to 5V power end, 3 pin of photoelectrical coupler U2 are connected with single-chip microcomputer 4 by PWM interface, the drain electrode of power field effect pipe VF connects loading interfaces, the drain electrode of power field effect pipe VF meets the 3rd resistance R3 successively, 4th resistance R4 extremely holds, node in the middle of 3rd resistance R3 and the 4th resistance R4 connects voltage detecting end, the source electrode of power field effect pipe VF connects 3 pin of sensor U1 respectively, 4 pin, 5 pin of sensor U1, 7 pin meet the 3rd electric capacity C3 respectively, 4th electric capacity C4 extremely holds, 6 pin of sensor U1 connect the negative pole end of the 5th resistance R5 to operational amplifier U3, positive pole termination the 6th resistance R6 of operational amplifier U3 extremely holds, the output terminal of negative pole termination the 8th resistance R8 to operational amplifier U3 of operational amplifier U3, the negative pole end of operational amplifier U3 meets the 7th resistance R7 successively, 9th resistance R9, tenth resistance R10 to 5V power end, power field effect pipe VF grid connects power input to be measured, drain current is controlled by regulating the voltage between source electrode and grid, described operational amplifier U3 adopts dual operational amplifier LM358, power field effect pipe VF adopts power field effect pipe IRF530, photoelectrical coupler U2 adopts door to drive photoelectrical coupler HCPL3120 as the driving chip of power field effect pipe VF, increases the stability of device performance.
This embodiment power control module 1 is for controlling driving power dissipation electric energy, power control module 1 is as the access interface of tested power supply, receive single-chip microcomputer 4 internal control quantity, exported the conduction amount controlling power field effect pipe VF by PWM, thus reach the object expecting load; Current/voltage acquisition testing module 2 is for detection power load circuit real-time operating current voltage receipt, current/voltage acquisition testing module 2 is made up of current acquisition detection module 10 and voltage acquisition detection module 11, current acquisition detection module 10 comprises sensor U1, sensor U1 adopts current sensor ACS712, sensor U1 exports after the translation of operational amplifier U3 level, output to the inner A/D transition module interface of single-chip microcomputer 4, voltage acquisition detection module 11 adopts resistor voltage divider circuit output voltage to receive single-chip microcomputer 4 internal conversion module interface.
In addition, abnormality detection module 3, for detection power load circuit operation exception situation, is monitored the unusual condition such as superpotential and excess current of tested power supply, utilizes relay to open the light the break-make protection circuit of control circuit audio alert; The quality of tested power supply is evaluated simultaneously, and display module display " high-quality ", " qualified " and " poor quality "; Wireless communication module 5, for the communication between host computer and electronic load equipment, is convenient to the operation to electronic load and control; LCD display module 7 adopts LCD1286 liquid crystal display, shows operation information during model selection, and during system works, display system operational data and power quality are estimated; Keyboard input module 8 adopts five buttons, for model selection and current/voltage setting.
The analog to digital converter that this embodiment utilizes TMS320F2812 chip internal integrated gathers electric current and magnitude of voltage, and export through fuzzy PID algorithm processing controls D/A, the conduction amount controlling power field effect pipe VF is exported by PWM, thus make controll plant within the time required, reach the reference value of setting, electronic load is met consumers' demand, institute's operational process is all in the monitoring of abnormality detection module safety simultaneously, relay real-time guard device and tested power safety is utilized to run, prevent the abnormal conditions such as excess current superpotential from occurring, plant running data are stored in AM29LV400-55ROM, and show real time data at LCD, subsidiary communication port, be convenient to user's observation and operation, more traditional single-chip microcomputer electronic load is compared, have energy-conservation, volume is little, lightweight, precision is high, the features such as stability is strong, there is wide market application foreground.
More than show and describe ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. based on the device of TMS320F2812 DC Electronic Loads, it is characterized in that, comprise power control module (1), current/voltage acquisition testing module (2), abnormality detection module (3), single-chip microcomputer (4), wireless communication module (5), voice alarm module (6), LCD display module (7), keyboard input module (8) and power module (9), power control module (1) is connected with single-chip microcomputer (4), load connects power control module (1) by relay protection, power control module (1) connects current/voltage acquisition testing module (2), current/voltage acquisition testing module (2) connects single-chip microcomputer (4), single-chip microcomputer (4) respectively with abnormality detection module (3), wireless communication module (5), voice alarm module (6), LCD display module (7), keyboard input module (8), power module (9) connects, and abnormality detection module (3) feedback link is to the relay protection end of load, and described single-chip microcomputer (4) adopts data signal processor TMS320F2812.
2. the device based on TMS320F2812 DC Electronic Loads according to claim 1, it is characterized in that, described current/voltage acquisition testing module (2) is made up of current acquisition detection module (10) and voltage acquisition detection module (11), current acquisition detection module (10), voltage acquisition detection module (11) are all connected with single-chip microcomputer (4) by A/D transition module interface, current acquisition detection module comprises sensor (U1), and sensor (U1) adopts current sensor ACS712.
3. the device based on TMS320F2812 DC Electronic Loads according to claim 1, it is characterized in that, described power control module (1) adopts power field effect pipe (VF), the grid of power field effect pipe (VF) connects the first resistance (R1) to 6 pin of photoelectrical coupler (U2) and 7 pin, 5 pin of photoelectrical coupler (U2) connect the first electric capacity (C1) respectively, second electric capacity (C2) extremely is held, 2 pin of photoelectrical coupler (U2) connect the second resistance (R2) to 5V power end, 3 pin of photoelectrical coupler (U2) are connected with single-chip microcomputer (4) by PWM interface, the drain electrode of power field effect pipe (VF) connects loading interfaces, the drain electrode of power field effect pipe (VF) connects the 3rd resistance (R3) successively, 4th resistance (R4) extremely is held, 3rd resistance (R3) connects voltage detecting end with the node in the middle of the 4th resistance (R4), the source electrode of power field effect pipe (VF) connects 3 pin of sensor (U1) respectively, 4 pin, 5 pin of sensor (U1), 7 pin connect the 3rd electric capacity (C3) respectively, 4th electric capacity (C4) extremely is held, 6 pin of sensor (U1) connect the negative pole end of the 5th resistance (R5) to operational amplifier (U3), the positive pole termination the 6th resistance (R6) of operational amplifier (U3) extremely is held, the negative pole termination the 8th resistance (R8) of operational amplifier (U3) is to the output terminal of operational amplifier (U3), the negative pole end of operational amplifier (U3) connects the 7th resistance (R7) successively, 9th resistance (R9), tenth resistance (R10) is to 5V power end, operational amplifier (U3) adopts dual operational amplifier LM358.
4. the device based on TMS320F2812 DC Electronic Loads according to claim 3, it is characterized in that, described power field effect pipe (VF) adopts power field effect pipe IRF530, and photoelectrical coupler (U2) adopts door to drive photoelectrical coupler HCPL3120.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520191155.8U CN204595181U (en) | 2015-03-31 | 2015-03-31 | Based on the device of TMS320F2812 DC Electronic Loads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520191155.8U CN204595181U (en) | 2015-03-31 | 2015-03-31 | Based on the device of TMS320F2812 DC Electronic Loads |
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| CN204595181U true CN204595181U (en) | 2015-08-26 |
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| CN201520191155.8U Expired - Fee Related CN204595181U (en) | 2015-03-31 | 2015-03-31 | Based on the device of TMS320F2812 DC Electronic Loads |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105182251A (en) * | 2015-09-30 | 2015-12-23 | 国家电网公司 | DC load automatic loading device |
| CN105425170A (en) * | 2015-12-09 | 2016-03-23 | 浙江榆阳电子有限公司 | Intelligent aged load |
| CN107069649A (en) * | 2017-04-27 | 2017-08-18 | 长沙金定信息技术有限公司 | A kind of electrical load safety operation control system |
| CN110187155A (en) * | 2019-06-27 | 2019-08-30 | 中国船舶电站设备有限公司 | Formula load device is pressed dry in a kind of direct current |
| CN110501540A (en) * | 2019-08-23 | 2019-11-26 | 深圳市精泰达科技有限公司 | A kind of electronic load circuit |
-
2015
- 2015-03-31 CN CN201520191155.8U patent/CN204595181U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105182251A (en) * | 2015-09-30 | 2015-12-23 | 国家电网公司 | DC load automatic loading device |
| CN105425170A (en) * | 2015-12-09 | 2016-03-23 | 浙江榆阳电子有限公司 | Intelligent aged load |
| CN107069649A (en) * | 2017-04-27 | 2017-08-18 | 长沙金定信息技术有限公司 | A kind of electrical load safety operation control system |
| CN110187155A (en) * | 2019-06-27 | 2019-08-30 | 中国船舶电站设备有限公司 | Formula load device is pressed dry in a kind of direct current |
| CN110501540A (en) * | 2019-08-23 | 2019-11-26 | 深圳市精泰达科技有限公司 | A kind of electronic load circuit |
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| Date | Code | Title | Description |
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| 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: 20150826 Termination date: 20160331 |
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| CF01 | Termination of patent right due to non-payment of annual fee |