CN210376587U - Converter control unit test platform - Google Patents
Converter control unit test platform Download PDFInfo
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- CN210376587U CN210376587U CN201920655285.0U CN201920655285U CN210376587U CN 210376587 U CN210376587 U CN 210376587U CN 201920655285 U CN201920655285 U CN 201920655285U CN 210376587 U CN210376587 U CN 210376587U
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Abstract
The utility model relates to a test platform, in particular to a test platform for a converter control unit; the technical problems that the detection period of a current transformer control unit is long and the detection cost is high due to the fact that an existing current transformer control unit test platform is complex in structure, large in size and inconvenient to transport and install are solved. The test platform comprises a power supply circuit, a main controller, a digital quantity output module, an analog quantity input module, a serial port communication module, a computer and an MVB debugger; the input end of the analog quantity input module is used for being connected with the first output end of the converter control unit, and the output end of the analog quantity input module is connected with the input end of the main controller; the input end of the analog quantity output module is connected with the first output end of the main controller, and the output end of the analog quantity output module is used for being connected with the first input end of the converter control unit; the input end of the digital quantity output module is connected with the second output end of the main controller, and the output end of the digital quantity output module is used for being connected with the second input end of the converter control unit.
Description
Technical Field
The utility model relates to a test platform, concretely relates to converter control unit test platform.
Background
Electric locomotives are often equipped with a plurality of converter control units (DCUs). Because the current converter control unit test platform mostly has the problem that the volume is huge, the structure is complicated, transportation and installation are inconvenient, when needing to overhaul and maintain the converter control unit (DCU), mostly need transport the converter control unit to the overhaul place, then overhaul and maintain the converter control unit, lead to that the detection cycle of converter control unit is longer, detection cost is great.
SUMMERY OF THE UTILITY MODEL
In order to solve current converter the control unit test platform because the structure is complicated, the volume is huge, transportation and installation are inconvenient, lead to the longer, the great technical problem of detection cost of detection cycle of converter the control unit, the utility model provides a converter the control unit test platform.
The technical solution of the utility model is that:
a converter control unit test platform is characterized in that:
the device comprises a power circuit, a main controller, a digital output module, an analog input module, a serial port communication module, a computer and an MVB debugger;
the power supply circuit supplies power to the main controller, the digital quantity output module, the analog quantity output module and the serial port communication module;
the serial port communication module is in bidirectional communication with the main controller and the computer;
the input end of the analog quantity input module is used for being connected with the first output end of the converter control unit, and the output end of the analog quantity input module is connected with the input end of the main controller;
the input end of the analog quantity output module is connected with the first output end of the main controller, and the output end of the analog quantity output module is used for being connected with the first input end of the converter control unit;
the input end of the digital quantity output module is connected with the second output end of the main controller, and the output end of the digital quantity output module is used for being connected with the second input end of the converter control unit;
the computer is in bidirectional communication with the converter control unit through the Ethernet; the input end of the MVB debugger is used for being connected with the second output end of the converter control unit, and the output end of the MVB debugger is connected with the input end of the computer.
Furthermore, the power circuit is divided into three paths, wherein the first path of power supplies power to the analog output module, the second path of power supplies power to the main controller and the serial communication module, and the third path of power supplies power to the digital output module;
the first power supply is +/-12V; the second voltage source is 24V; the third voltage source is 3.3V.
Further, the main controller comprises 9 AD sampling channels, at least 92 general IO interfaces and at least 1 communication interface.
Further, the serial port communication module comprises an RS232 serial port.
The utility model discloses compare prior art's beneficial effect is:
1. the utility model discloses be integrated as an organic whole with power module, processing module, communication module, display module, have small, modularization, easy operation, the advantage of being convenient for transportation, shortened converter the control unit's detection cycle, reduced the detection cost.
2. Based on the utility model provides a hardware test platform adopts simple, conventional software cooperation can test the output channel and the input channel of being tested converter the control unit (DCU) to can detect the MVB function of converter the control unit (DCU).
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
Detailed Description
The invention is further described with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1:
the converter control unit test platform comprises a power supply circuit, a main controller, a digital output module, an analog input module, a serial port communication module, a computer and an MVB debugger.
The power supply circuit supplies power to the main controller, the digital output module, the analog output module and the serial port communication module.
The serial port communication module is in bidirectional communication with the main controller and the computer.
The input end of the analog quantity input module is used for being connected with the first output end of the converter control unit, and the output end of the analog quantity input module is connected with the input end of the main controller; the input end of the analog quantity output module is connected with the first output end of the main controller, and the output end of the analog quantity output module is used for being connected with the first input end of the converter control unit; the input end of the digital quantity output module is connected with the second output end of the main controller, and the output end of the digital quantity output module is used for being connected with the second input end of the converter control unit;
the computer is in bidirectional communication with the converter control unit through the Ethernet; the input end of the MVB debugger is used for being connected with the second output end of the converter control unit, and the output end of the MVB debugger is connected with the input end of the computer.
The analog quantity output module is respectively transmitted to the converter control unit through 20 paths of 0V-24V voltage, 15 paths of 24V-0V voltage, 6 paths of 0A-200mA current and 6 paths of voltage output (adjustable resistors); the converter control unit inputs the analog quantity input module through 9 paths of 0V-15V voltages; the digital quantity output module is respectively transmitted to the converter control unit through 8-bit MVB addresses, 18 paths of 0V voltage and 8 paths of 24V voltage.
The power circuit is divided into three paths, wherein the first path of power supplies power for the analog output module, the second path of power supplies power for the main controller and the serial communication module, and the third path of power supplies power for the digital output module. The total power supply is an AC-DC power supply, and the first path of power supply is +/-12V; the second voltage source is 24V; the third voltage source is 3.3V, and each group of power supplies is provided with a corresponding power supply indicator lamp.
The main controller comprises 9 AD sampling channels, at least 92 general IO interfaces and at least 1 communication interface. The master in this embodiment includes 112 general I/O, 21 ADC channels, 3 SPI buses and 1 CAN bus. The main controller controls the external circuit to realize the test function through serial port communication according to the computer instruction.
The serial port communication module is an RS232 serial port, and the computer is communicated with the main controller through the RS232 serial port.
The output of the analog output module is adjusted by an external potentiometer, and the switching between output channels is controlled by a main controller.
The analog quantity input module collects analog quantity signals output by a control unit of the converter to be tested, the analog quantity input of 0-5V is collected after one-half voltage division through a resistor, the analog quantity input of 15V is collected after one-fifth voltage division through the resistor, the collected analog quantity is sent to the main controller, and finally the main controller multiplies corresponding multiples to send the analog quantity signals to the computer.
The working principle of the converter control unit test platform is as follows:
the main controller and the computer are communicated through a serial port, and the test platform is connected with the converter control unit to be tested through a special cable; and the computer and the converter control unit to be tested realize data exchange through Ethernet communication.
When the analog quantity/digital quantity output channel of the converter control unit to be tested starts to be tested, a computer sends a test instruction through a serial port communication module, the output value of the converter control unit to be tested is set, a main controller collects the output value of the converter control unit to be tested and feeds a sampling value back to the computer, and the computer compares the set value with the feedback value to judge whether the channel function is normal or not;
when the input channel of the converter control unit to be tested starts to be tested, a computer sends a test instruction to a main controller, the main controller provides a corresponding excitation signal to the converter control unit to be tested, the converter control unit to be tested uploads a feedback signal to the computer through Ethernet communication, and the computer compares and judges whether the corresponding channel function is normal or not;
in addition, a heartbeat signal of the current transformer control unit to be tested is monitored in real time between the computer and the current transformer control unit to be tested through the MVB debugger, and whether the MVB function of the current transformer control unit to be tested is normal or not is judged by judging the state of the heartbeat signal.
The test flow of the converter control unit test platform is as follows:
1. connecting the test platform with a tested converter control unit;
2. electrifying a control unit of the converter to be tested;
3. the test platform carries out self-checking;
4. setting parameters of the test platform;
5. setting a test flow for the test platform; can be set as manual test and automatic test;
6. starting the test;
7. recording data and results;
8. and (6) completing the test.
The above is only the embodiment of the present invention, and is not the limitation of the protection scope of the present invention, all the equivalent structure changes made in the contents of the specification and the drawings, or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (4)
1. A converter control unit test platform which characterized in that:
the device comprises a power circuit, a main controller, a digital output module, an analog input module, a serial port communication module, a computer and an MVB debugger;
the power supply circuit supplies power to the main controller, the digital quantity output module, the analog quantity output module and the serial port communication module;
the serial port communication module is in bidirectional communication with the main controller and the computer;
the input end of the analog quantity input module is used for being connected with the first output end of the converter control unit, and the output end of the analog quantity input module is connected with the input end of the main controller;
the input end of the analog quantity output module is connected with the first output end of the main controller, and the output end of the analog quantity output module is used for being connected with the first input end of the converter control unit;
the input end of the digital quantity output module is connected with the second output end of the main controller, and the output end of the digital quantity output module is used for being connected with the second input end of the converter control unit;
the computer is in bidirectional communication with the converter control unit through the Ethernet; the input end of the MVB debugger is used for being connected with the second output end of the converter control unit, and the output end of the MVB debugger is connected with the input end of the computer.
2. The converter control unit test platform of claim 1, wherein:
the power supply circuit is divided into three paths, wherein the first path of power supply supplies power to the analog output module, the second path of power supply supplies power to the main controller and the serial communication module, and the third path of power supply supplies power to the digital output module;
the first power supply is +/-12V; the second power supply is 24V; and the third power supply is 3.3V.
3. The converter control unit test platform of claim 1, wherein: the main controller comprises 9 AD sampling channels, at least 92 general IO interfaces and at least 1 communication interface.
4. A converter control unit test platform according to claim 1 or 2, characterized in that: the serial port communication module is an RS232 serial port.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920655285.0U CN210376587U (en) | 2019-05-09 | 2019-05-09 | Converter control unit test platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920655285.0U CN210376587U (en) | 2019-05-09 | 2019-05-09 | Converter control unit test platform |
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| CN210376587U true CN210376587U (en) | 2020-04-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111580504A (en) * | 2020-05-26 | 2020-08-25 | 中国南方电网有限责任公司超高压输电公司广州局 | Simulation test platform of submarine cable oil pump station control system |
| CN112666370A (en) * | 2020-12-10 | 2021-04-16 | 广州擎天实业有限公司 | Extended interface of PEMFC engine test system and driving method |
-
2019
- 2019-05-09 CN CN201920655285.0U patent/CN210376587U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111580504A (en) * | 2020-05-26 | 2020-08-25 | 中国南方电网有限责任公司超高压输电公司广州局 | Simulation test platform of submarine cable oil pump station control system |
| CN112666370A (en) * | 2020-12-10 | 2021-04-16 | 广州擎天实业有限公司 | Extended interface of PEMFC engine test system and driving method |
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