CN214751575U - Voltage compensation circuit, voltage compensation device and voltage compensation automation equipment - Google Patents
Voltage compensation circuit, voltage compensation device and voltage compensation automation equipment Download PDFInfo
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- CN214751575U CN214751575U CN202120881187.6U CN202120881187U CN214751575U CN 214751575 U CN214751575 U CN 214751575U CN 202120881187 U CN202120881187 U CN 202120881187U CN 214751575 U CN214751575 U CN 214751575U
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Abstract
The application discloses a voltage compensation circuit, a voltage compensation device and voltage compensation automation equipment, wherein the voltage compensation circuit comprises a power supply unit, a current test unit, a first circuit and a second circuit, wherein the power supply unit is electrically connected with a load through the first circuit and used for providing voltage for the load; the current test unit is electrically connected with the first line and used for detecting the current input into the load; one end of the second circuit is electrically connected with the output end of the current testing unit, and the other end of the second circuit is electrically connected with the power supply unit. According to the power supply unit, the voltage of the input load is fed back through the second line, so that the power supply unit can compare the voltage value fed back through the second line with the preset voltage value output by the power supply unit to compensate the voltage output by the power supply unit, the voltage value supplied to the load is guaranteed to be an accurate set value, and the accuracy of load power consumption measurement is guaranteed.
Description
Technical Field
The application relates to the technical field of performance test of a Micro Control Unit (MCU), in particular to a voltage compensation circuit, a voltage compensation device and automation equipment.
Background
In the prior art, when a performance test is performed on a load, for example, a power consumption board of an MCU (micro controller Unit), a current meter is usually used to measure a current input to the load, and then the power consumption of the load is calculated by using a current value measured by the current meter.
However, when the current input to the load is measured using the ammeter, the voltage value input to the load may be different from the set voltage value, and the power consumption of the load may not be accurately measured.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problems in the prior art, a primary object of the present application is to provide a voltage compensation circuit capable of accurately measuring power consumption of a load.
In order to achieve the above purpose, the following technical solutions are specifically adopted in the present application:
the application provides a voltage compensation circuit for driving a load, the voltage compensation circuit comprising:
the power supply unit is electrically connected with the load through a first line and used for providing voltage for the load;
the current test unit is electrically connected to the first line and used for detecting the current input into the load;
and one end of the second line is electrically connected with the output end of the current testing unit, and the other end of the second line is electrically connected with the power supply unit and used for feeding back the voltage input to the load.
In a specific embodiment, the load driven by the voltage compensation circuit is an MCU chip.
In a specific embodiment, the voltage compensation circuit further includes a control unit electrically connected to the power supply unit, and configured to control preset output voltages of the channels of the power supply unit.
In a specific implementation manner, the control unit is an MCU chip, and the MCU chip controls the preset output voltage of each channel of the power supply unit according to a control command set by the MCU chip.
In a specific implementation manner, the voltage compensation circuit further includes a storage unit, the storage unit is configured to store, in a table form, preset output voltages of channels of the power supply unit and control instructions corresponding to the preset output voltages one to one, and the control unit is configured to read the table to obtain the control instructions.
Accordingly, the present application also provides a voltage compensation device for compensating a driving voltage of an MCU, the voltage compensation device including:
the digital power supply is electrically connected with the MCU through a first circuit and used for providing voltage for the MCU;
the ammeter is electrically connected to the first circuit and used for detecting the current input into the MCU;
and one end of the second circuit is electrically connected with the output end of the ammeter, and the other end of the second circuit is electrically connected with the digital power supply and used for feeding back and inputting the MCU voltage.
In a specific embodiment, the voltage compensation device further includes a controller, and the controller is connected to the digital power supply and configured to control preset output voltages of channels of the digital power supply.
In a specific implementation manner, the controller is an MCU chip, and the MCU chip operates a set control command to control the preset output voltage of each channel of the digital power supply.
In a specific implementation manner, the voltage compensation apparatus further includes a memory, the memory is configured to store the preset output voltages of the channels of the digital power supply and the control commands corresponding to the preset output voltages in a table format, and the controller is configured to read the table to obtain the control commands.
Correspondingly, the present application also provides a voltage compensation automation device, including:
a test interface for connecting the MCU to be tested,
a digital power supply; the digital power supply is electrically connected with the test interface through a first circuit and used for providing voltage for the test interface;
the ammeter is electrically connected to the first line and used for detecting the current input into the test interface;
one end of the second circuit is electrically connected with the output end of the ammeter, and the other end of the second circuit is electrically connected with the digital power supply and used for feeding back the voltage input into the test interface;
and the computer is connected with the digital power supply and is used for controlling the preset output voltage of each channel of the digital power supply.
Compared with the prior art, the voltage compensation circuit comprises a power supply unit and a current test unit, wherein the power supply unit is electrically connected with a load through a first line and used for providing voltage for the load; the current test unit is connected to the first line and used for detecting the current input to the load; meanwhile, the voltage of the input end of the load is fed back to the power supply unit through the second line, so that the power supply unit can compare the voltage value fed back by the second line with the preset voltage value output by the power supply unit to compensate the voltage output by the power supply unit, the output voltage of the power supply unit is improved, the voltage value supplied to the load is ensured to be an accurate set value, and the accuracy of measuring the power consumption of the load is further ensured.
Drawings
Fig. 1 is a block diagram of a voltage compensation circuit according to an embodiment of the present disclosure.
Fig. 2 is another block diagram of a voltage compensation circuit according to an embodiment of the present disclosure.
Fig. 3 is a circuit diagram of a voltage compensation apparatus according to an embodiment of the present application.
Fig. 4 is a circuit diagram of a voltage compensation apparatus according to another embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In the description of the present application, unless explicitly stated or limited otherwise, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless specified or indicated otherwise; the specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
Referring to fig. 1, fig. 1 is a block diagram of a voltage compensation circuit according to an embodiment of the present disclosure. The voltage compensation circuit is used for driving a load 5, and includes a power supply unit 1, a current test unit 2, and a first line 3. The power supply unit 1 is electrically connected to a load 5 via a first line 3 for supplying a voltage to the load 5. The current testing unit 2 is electrically connected to the first line 3, and is configured to detect a current input to the load 5, so as to calculate power consumption of the load 5 according to a preset output voltage of the power supply unit 1 and a current value measured by the current testing unit 2.
In order to ensure the accuracy of the voltage input to the load 5, the voltage compensation circuit further comprises a second line 4, one end of the second line 4 is electrically connected with the output end of the current test unit 2, and the other end of the second line 4 is electrically connected with the power supply unit 1 to form a feedback channel for feeding back the voltage input to the load 5, so that the power supply unit 1 can compare the voltage value fed back by the second line 4 with the preset voltage value output by the power supply unit 1 to compensate the voltage output by the power supply unit 1, and ensure that the voltage value supplied to the load is an accurate set value, thereby ensuring the accuracy of the load power consumption test.
Referring to fig. 2, fig. 2 is another block diagram of a voltage compensation circuit according to an embodiment of the present disclosure. The voltage compensation circuit further comprises a control unit 6 and a storage unit 7, wherein the control unit 6 is electrically connected with the storage unit 7 and the power supply unit 1 respectively. The storage unit 7 is configured to store the preset output voltages of the channels of the power supply unit 1 and the control commands corresponding to the preset output voltages in a table format. The control unit 6 is configured to read the table to obtain a control command, and execute the control command to control the preset output voltage of each channel of the power supply unit 1. That is, when the load 5 needs to input a certain set voltage for testing, the control unit 6 searches the table for the control command corresponding to the set voltage, obtains the control command, transmits the control command to the power supply unit 1, and controls the preset output voltage of the power supply unit 1.
The load can be an MCU chip or other elements to be tested; the control unit may be an MCU chip or other control chips, and the table may be an EXCEL table, a LOTUS, a CCED, or the like.
On the basis of the above embodiment, the application also discloses a voltage compensation device for compensating the driving voltage of the MCU. Referring to fig. 3, fig. 3 is a circuit diagram of a voltage compensation apparatus according to an embodiment of the present application. The voltage compensation apparatus includes a digital power supply 10, an ammeter 20, a first line 30 and a second line 40. The digital power supply 10 is electrically connected to the MCU50 via the first line 30 for providing voltage to the MCU 50. The ammeter 20 is electrically connected to the first line 30, and is configured to detect a current input to the MCU50, so as to calculate a power consumption of the MCU50 according to a preset output voltage of the digital power supply 10 and a current value measured by the ammeter 20. One end of the second circuit 40 is electrically connected with the output end of the ammeter 20, and the other end of the second circuit 40 is electrically connected with the digital power supply 10 to form a feedback channel for feeding back the voltage input to the MCU50, so that the digital power supply 10 can compare the voltage value fed back by the second circuit 40 with the preset voltage value output by the digital power supply 10 to compensate the voltage sent by the digital power supply 10, and ensure that the voltage value supplied to the MCU is an accurate set value, thereby ensuring the accuracy of MCU power consumption measurement.
The digital power supply has a plurality of channels, each of which can output different voltages to provide different voltages to different input terminals of the MCU 50. For example, the first channel of the digital power supply 10 is connected to the first input terminal of the MCU50 through an ammeter 20, and the second line 40 feeds back the voltage input to the first input terminal of the MCU50 to the first channel of the digital power supply 10, so that the digital power supply 10 can compensate the output voltage of the first channel of the digital power supply 10 according to the voltage fed back by the second line 40.
The digital power supply realizes the integration of digital and analog technologies, provides strong adaptability and flexibility, has the capability of directly monitoring, processing and adapting to system conditions, and can meet almost any power supply requirement. The digital power supply can also ensure continuous system reliability through remote diagnosis, and realize functions of fault management, overvoltage (current) protection, automatic redundancy and the like. Because the integration level of the digital power supply is very high, the complexity of the system is not increased too much along with the increase of functions, the number of peripheral devices is small (the requirement on an output filter capacitor can be reduced due to the quick response capability of the digital power supply), the occupied area is reduced, and the design and manufacturing process is simplified. Meanwhile, the automatic diagnosis and adjustment capability of the digital power supply enables debugging and maintenance work to be easy.
The ammeter 20 is connected in series to the first line 30, and the current flowing through the first line 30, i.e., the current value input to the MCU50, can be obtained by reading the current displayed by the ammeter.
Further, the voltage compensation apparatus further includes a controller 60 and a memory 70, and the controller 60 is electrically connected to the memory 70 and the digital power supply 10, respectively. The memory 70 is configured to store preset output voltages of the channels of the digital power supply 10 and control instructions corresponding to the preset output voltages in a table form; the controller 60 is configured to read the table to obtain a control command, and execute the control command to control the preset output voltage of each channel of the digital power supply 10. That is, when the MCU50 needs to input a certain set voltage for testing, the controller 60 searches the table for a control command corresponding to the set voltage, obtains the control command, transmits the control command to the digital power supply 10, and controls the preset output voltage of the digital power supply 10.
The controller can be an MCU chip, and the preset output voltage of each channel of the digital power supply is controlled through a control instruction set by the MCU chip in an operation mode.
Based on the above embodiment, the application also discloses voltage compensation automation equipment for automatically testing the performance of the MCU. Referring to fig. 4, the voltage compensation automation apparatus includes a digital power supply 10, an ammeter 20, a first line 30, a second line 40, a computer 80, and a test interface 90. The test interface 90 is used for connecting the MCU50 to be tested, and the digital power supply 10 is electrically connected to the test interface 90 via the first line 30 for providing voltage to the test interface 90. The ammeter 20 is electrically connected to the first line 30, and is configured to detect a current input to the test interface 90, so as to calculate a power consumption of the MCU50 according to a preset output voltage of the digital power supply 10 and a current value measured by the ammeter 20. One end of the second line 40 is electrically connected to the output end of the ammeter 20, and the other end of the second line 40 is electrically connected to the digital power supply 10, for feeding back the voltage input to the test interface 90. The computer 80 is connected to the digital power supply 10 and is used for controlling preset output voltages of the channels of the digital power supply 10.
Further, the computer 80 stores the preset output voltages of the channels of the digital power supply 10 and the control commands corresponding to the preset output voltages in a table form, so that the computer can control the output voltages of the channels of the digital power supply 10 according to the table.
This application feeds back the voltage value of input test interface 90 through second circuit 40, makes digital power supply 10 compensate the predetermined output voltage of digital power supply 10 according to the voltage that second circuit 40 feedbacks for the voltage value through ampere meter 20 keeps unanimous with original set value, has guaranteed that the voltage of supplying MCU50 is accurate set value, tests MCU with can be accurate.
The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A voltage compensation circuit for driving a load, comprising:
the power supply unit is electrically connected with the load through a first line and used for providing voltage for the load;
the current test unit is electrically connected to the first line and used for detecting the current input into the load;
and one end of the second line is electrically connected with the output end of the current testing unit, and the other end of the second line is electrically connected with the power supply unit and used for feeding back the voltage input to the load.
2. The voltage compensation circuit of claim 1, wherein the load driven by the voltage compensation circuit is an MCU chip.
3. The voltage compensation circuit of claim 1, further comprising a control unit electrically connected to the power supply unit for controlling preset output voltages of the channels of the power supply unit.
4. The voltage compensation circuit of claim 3, wherein the control unit is an MCU chip, and the MCU chip operates a set control command to control the preset output voltage of each channel of the power supply unit.
5. The voltage compensation circuit of claim 3, further comprising a storage unit, wherein the storage unit is configured to store the preset output voltages of the channels of the power supply unit and the control commands corresponding to the preset output voltages in a table, and the control unit is configured to read the table to obtain the control commands.
6. A voltage compensation device for compensating a driving voltage of an MCU, comprising:
the digital power supply is electrically connected with the MCU through a first circuit and used for providing voltage for the MCU;
the ammeter is electrically connected to the first circuit and used for detecting the current input into the MCU;
and one end of the second circuit is electrically connected with the output end of the ammeter, and the other end of the second circuit is electrically connected with the digital power supply and used for feeding back and inputting the MCU voltage.
7. The voltage compensation device of claim 6, further comprising a controller connected to the digital power supply for controlling the preset output voltage of each channel of the digital power supply.
8. The voltage compensation device of claim 7, wherein the controller is an MCU chip, and the MCU chip operates a set control command to control the preset output voltage of each channel of the digital power supply.
9. The voltage compensation device according to claim 7, further comprising a memory, wherein the memory is configured to store the preset output voltages of the channels of the digital power supply and the control commands corresponding to the preset output voltages in a table, and the controller is configured to read the table to obtain the control commands.
10. A voltage compensation automation device for automatically testing MCU performance, comprising:
a test interface for connecting the MCU to be tested,
a digital power supply; the digital power supply is electrically connected with the test interface through a first circuit and used for providing voltage for the test interface;
the ammeter is electrically connected to the first line and used for detecting the current input into the test interface;
one end of the second circuit is electrically connected with the output end of the ammeter, and the other end of the second circuit is electrically connected with the digital power supply and used for feeding back the voltage input into the test interface;
and the computer is connected with the digital power supply and is used for controlling the preset output voltage of each channel of the digital power supply.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120881187.6U CN214751575U (en) | 2021-04-26 | 2021-04-26 | Voltage compensation circuit, voltage compensation device and voltage compensation automation equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120881187.6U CN214751575U (en) | 2021-04-26 | 2021-04-26 | Voltage compensation circuit, voltage compensation device and voltage compensation automation equipment |
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| CN214751575U true CN214751575U (en) | 2021-11-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115268329A (en) * | 2022-07-29 | 2022-11-01 | 青岛海信宽带多媒体技术有限公司 | Optical module and power supply voltage monitoring and compensating method thereof |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115268329A (en) * | 2022-07-29 | 2022-11-01 | 青岛海信宽带多媒体技术有限公司 | Optical module and power supply voltage monitoring and compensating method thereof |
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