CN111077489A - Current sensor calibration system and method - Google Patents
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- CN111077489A CN111077489A CN202010036392.2A CN202010036392A CN111077489A CN 111077489 A CN111077489 A CN 111077489A CN 202010036392 A CN202010036392 A CN 202010036392A CN 111077489 A CN111077489 A CN 111077489A
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Abstract
The present application provides a current sensor calibration system and method, the system comprising: the current source, the processor and the calibrated current sensor connected between the current source and the processor, wherein each current sensor to be calibrated is used for being connected with the current source and the calibrated current sensor in series and is also connected with the processor; the processor is used for providing a current signal; the calibrated current sensor is used for detecting a current signal of the current source to obtain a standard value; the current sensor to be calibrated is used for detecting a current signal of the current source to obtain a value to be calibrated; and the processor is used for acquiring the standard value and the value to be calibrated, calibrating the value to be calibrated according to the standard value to obtain the calibration parameter corresponding to the current sensor to be calibrated, and storing the calibration parameter into the current sensor to be calibrated, namely finishing the calibration process of the sensor to be calibrated. The calibration process is not limited by the type of the current sensor to be calibrated, can be suitable for any type of current sensor, and has strong applicability.
Description
Technical Field
The present application relates to sensor technologies, and more particularly, to a system and method for calibrating a current sensor.
Background
The current sensor is widely applied to various intelligent devices with current detection requirements, and particularly has higher requirements on the detection precision of the current sensor for some devices with higher control precision requirements. To ensure the accuracy and precision of the current sensor, the current sensor is typically calibrated.
The current detection principle of the common current sensor is of two types: 1. based on the fact that the shunt is connected in series into the circuit, current measurement is conducted by measuring the divided voltage of the shunt; 2. based on the Hall effect principle, a cable passes through a Hall element (magnetic ring) to measure the electromagnetic induction potential of the cable so as to measure the current. In the related art, most of the sensors rely on the current detection principle of the current sensor to calibrate the current sensor, so that the calibration mode has limited applicability and can only calibrate the sensors with the same working principle.
Disclosure of Invention
The application provides a current sensor calibration system and a method, which are used for getting rid of the limitation on the types of current sensors, realizing the calibration of different types of current sensors and improving the applicability.
In a first aspect, the present application provides a current sensor calibration system for calibrating at least one current sensor to be calibrated, including:
a current source, a calibrated current sensor and a processor, the calibrated current sensor being connected between the current source and the processor, the at least one current sensor to be calibrated being for series connection with the current source and the calibrated current sensor and each current sensor to be calibrated being connected with the processor;
the current source is used for providing current signals for the calibrated current sensor and the current sensor to be calibrated;
the calibrated current sensor is used for detecting a current signal of the current source to obtain a standard value;
the current sensor to be calibrated is used for detecting a current signal of the current source to obtain a value to be calibrated;
the processor is configured to obtain the standard value and the value to be calibrated obtained by the current sensor to be calibrated, calibrate the value to be calibrated according to the standard value to obtain a calibration parameter corresponding to the current sensor to be calibrated, and store the calibration parameter in the current sensor to be calibrated.
Optionally, the processor is further connected to the current source, and is configured to control the current source according to the obtained standard value, so as to adjust the size of the standard value.
Optionally, the processor includes: the device comprises a parameter calibration module, a calibrated current sensor management module and a current sensor management module to be calibrated, wherein the calibrated current sensor management module is connected with the parameter calibration module;
the calibrated current sensor management module is respectively connected with the calibrated current sensor and the current sensor to be calibrated, is used for acquiring the standard value and the value to be calibrated obtained by the current sensor to be calibrated, and sends the standard value and the value to be calibrated to the parameter calibration module;
the parameter calibration module is used for calibrating the value to be calibrated according to the standard value to obtain calibration parameters corresponding to the current sensor to be calibrated, and sending the calibration parameters to the current sensor management module to be calibrated;
and the current sensor management module to be calibrated is connected with the current sensor to be calibrated and is used for storing the calibration parameters into the current sensor to be calibrated.
Optionally, the processor is further configured to:
acquiring the calibration parameters from the current sensor to be calibrated, and judging whether the acquired calibration parameters are correct or not;
and if the calibration parameters are incorrect, storing the calibration parameters into the current sensor to be calibrated again.
Alternatively to this, the first and second parts may,
the current source is also used for providing a test current signal;
the calibrated current sensor is also used for detecting a test current signal of the current source to obtain a test standard value;
the current sensor to be calibrated is also used for detecting a test current signal of the current source to obtain a test value;
the processor is further configured to obtain the test standard value and the test value, and determine whether the precision of the calibration parameter reaches a preset threshold according to the test value and the test standard value.
Optionally, the processor is further configured to:
and if the precision of the calibration parameters does not reach the preset threshold value, the calibration parameters are obtained again.
In a second aspect, the present application further provides a current sensor calibration method applied in the current sensor calibration system as described in any one of the above, the method including:
acquiring a standard value obtained by detecting a current signal of the current source by the calibrated current sensor;
acquiring a value to be calibrated obtained by detecting a current signal of the current source by the current sensor to be calibrated;
calibrating the value to be calibrated according to the standard value to obtain calibration parameters corresponding to the current sensor to be calibrated;
and storing the calibration parameters into the current sensor to be calibrated.
Optionally, after obtaining a standard value obtained by detecting the current signal of the current source by the calibrated current sensor, the method further includes:
acquiring a current signal of the current source;
controlling the current source according to the standard value to adjust the standard value;
the calibrating the value to be calibrated according to the standard value to obtain calibration parameters corresponding to the current sensor to be calibrated includes:
and calibrating the value to be calibrated according to the adjusted standard value to obtain calibration parameters corresponding to the current sensor to be calibrated.
Optionally, the method further includes:
acquiring the calibration parameters from the current sensor to be calibrated;
judging whether the acquired calibration parameters are correct or not;
and if the calibration parameters are incorrect, storing the calibration parameters into the current sensor to be calibrated again.
Optionally, the method further includes:
and if the calibration parameter is correct, testing whether the precision of the calibration parameter reaches a preset threshold value.
Optionally, the testing whether the precision of the calibration parameter reaches a preset threshold includes:
acquiring a test standard value obtained by detecting a test current signal of the current source by the calibrated current sensor;
acquiring a test value obtained by detecting a test current signal of the current source by the current sensor to be calibrated;
and judging whether the precision of the calibration parameter reaches a preset threshold value according to the test standard value and the test value.
Optionally, the method further includes:
and if the precision of the calibration parameters does not reach the preset threshold value, the calibration parameters are obtained again.
In a third aspect, the present application also provides a computer-readable storage medium storing a computer program which, when executed by a processor, implements the method as defined in any one of the above.
The present application provides a current sensor calibration system and method, the system comprising: the current source, the processor and the calibrated current sensor connected between the current source and the processor, wherein each current sensor to be calibrated is used for being connected with the current source and the calibrated current sensor in series and is also connected with the processor; for the same current signal sent by the same current source, the calibrated current sensor detects to obtain a standard value, the current sensor to be calibrated detects to obtain a value to be calibrated, the processor obtains the standard value and the value to be calibrated, and then calibrates the value to be calibrated according to the standard value, a calibration parameter can be obtained in the calibration process, and the calibration parameter is stored in the sensor to be calibrated, namely the calibration process of the sensor to be calibrated is completed. The calibration mode of the calibration system is not limited by the type of the current sensor to be calibrated, and the calibration system can be suitable for any type of current sensor and has strong applicability.
Drawings
In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a current sensor calibration system according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a current sensor calibration system according to another embodiment of the present application;
FIG. 3 is a flow chart of a method for calibrating a current sensor according to an embodiment of the present disclosure;
FIG. 4 is a flow chart of a method for calibrating a current sensor according to another embodiment of the present application;
fig. 5 is a flowchart of a current sensor calibration method according to another embodiment of the present application.
Detailed Description
To make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below with reference to the drawings in the present application, and it is obvious that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a schematic structural diagram of a current sensor calibration system according to an embodiment of the present application, configured to calibrate at least one current sensor to be calibrated, and as shown in fig. 1, a current sensor calibration system 10 according to the present embodiment may include: a current source 11, a calibrated current sensor 12 and a processor 13, the calibrated current sensor 12 being connected between the current source 11 and the processor 13, at least one current sensor to be calibrated being intended to be connected in series with the current source 11 and the calibrated current sensor 12 and each current sensor to be calibrated being connected to the processor 13. Fig. 1 illustrates one current sensor 20 to be calibrated as an example, and it should be noted that the present embodiment is not limited to one current sensor to be calibrated, and when there are multiple current sensors to be calibrated, the processing manner of each of the other current sensors to be calibrated is similar to that of the current sensor to be calibrated illustrated in fig. 1.
The current source 11 is used for providing current signals to the calibrated current sensor 12 and the current sensor 20 to be calibrated; the calibrated current sensor 12 is used for detecting a current signal of the current source 11 to obtain a standard value; the current sensor 20 to be calibrated is used for detecting a current signal of the current source 11 to obtain a value to be calibrated; the processor 13 is configured to obtain a standard value and a value to be calibrated obtained by the current sensor 20 to be calibrated, calibrate the value to be calibrated according to the standard value, obtain a calibration parameter corresponding to the current sensor 20 to be calibrated, and store the calibration parameter in the current sensor 20 to be calibrated.
In this embodiment, for the same current signal sent by the same current source 11, the calibrated current sensor 12 may detect a standard value, the current sensor 20 to be calibrated may detect a value to be calibrated, the processor 13 acquires the standard value and the value to be calibrated, and further calibrates the value to be calibrated according to the standard value, the calibration process may obtain a calibration parameter, and the calibration parameter is stored in the sensor 10 to be calibrated, that is, the calibration process of the sensor 10 to be calibrated is completed. The calibration mode of the calibration system is not limited by the type of the current sensor to be calibrated, and the calibration system can be suitable for any type of current sensor and has strong applicability.
Specifically, the current source 11 is electrically connected to the calibrated current sensor 12 and the current sensor 20 to be calibrated to form a loop, and the processor 13 is connected to the current source 11, the calibrated current sensor 12 and the current sensor 20 to be calibrated by signal connection, for example, signal transmission through a CAN bus connection.
In some implementations, the current source 11 can provide several current signals to obtain several corresponding standard values and values to be calibrated, so that more accurate calibration parameters can be obtained through processing of a large amount of data.
In some implementations, the processor 13 is further connected to the current source 11, and is configured to control the current source 11 according to the obtained standard value to adjust the standard value, so that the current source 11 can provide different current signals according to a preset value, for example, covering the entire range from 1mA to 1A, to further improve the calibration accuracy.
In some implementation manners, a plurality of current sensors to be calibrated can be connected in series and simultaneously connected into the calibration system, or can be connected into the calibration system one by one in a switching manner, so that batch calibration of the current sensors is realized, and the calibration efficiency is improved.
Fig. 2 is a schematic structural diagram of a current sensor calibration system according to another embodiment of the present application, configured to calibrate at least one current sensor to be calibrated, as shown in fig. 2, in the system according to the embodiment shown in fig. 1, a processor 13 includes: the device comprises a parameter calibration module 131, a calibrated current sensor management module 132 connected with the parameter calibration module, and a current sensor management module to be calibrated 133.
The calibrated current sensor management module 132 is connected to the calibrated current sensor 12 and the current sensor 20 to be calibrated, respectively, and is configured to obtain a standard value and a value to be calibrated obtained by the current sensor 20 to be calibrated, and send the standard value and the value to be calibrated to the parameter calibration module 131.
The calibrated current sensor management module 132 is further connected to the current source 11, and is configured to control the current source 11 according to the obtained standard value, so as to adjust the standard value, so that the current source 11 can provide different current signals according to a preset setting.
The parameter calibration module 131 is configured to calibrate the value to be calibrated according to the adjusted standard value, obtain a calibration parameter corresponding to the current sensor 20 to be calibrated, and send the calibration parameter to the current sensor management module 133 to be calibrated.
The current sensor to be calibrated management module 133 is connected to the current sensor to be calibrated 20, and is configured to store the calibration parameter in the current sensor to be calibrated 20.
In this embodiment, the calibrated current sensor management module 132 controls the current source 11 according to a preset calibration current value, so that a preset current signal sent by the current source is detected by the calibrated current sensor 12 to obtain a standard value, the current sensor 20 to be calibrated can detect a value to be calibrated, the calibrated current sensor management module 132 obtains the standard value and the value to be calibrated and sends the standard value and the value to be calibrated to the parameter calibration module 131, the parameter calibration module 131 calibrates the value to be calibrated according to the standard value, a calibration parameter can be obtained in the calibration process, the parameter calibration module 131 sends the calibration parameter to the current sensor management module 133 to be calibrated, and the current sensor management module 133 to be calibrated stores the calibration parameter into the sensor 10 to be calibrated, that is, the calibration process of the sensor 10 to be calibrated is completed. The calibration mode of the calibration system is not limited by the type of the current sensor to be calibrated, and the calibration system can be suitable for any type of current sensor and has strong applicability.
In this usage scenario, the current sensor Management module 133 to be calibrated may be specifically hardware based on a Battery Management System (BMS) corresponding to the Battery Management device.
Still in the above scenario, since the working process of the current sensor is matched with the battery management system, and the current data detected by the current sensor is sent to the battery management system for subsequent data processing, the calibration process of the current data detected by the current sensor can be completed in the battery management system, in this embodiment, the parameter calibration module 131 sends the calibration parameter to the current sensor management module 133 to be calibrated and stores the calibration parameter, so that the calibration process of the current sensor to be calibrated can be completed. In the working process after the calibration of the current sensor, the detected current data may be directly sent to the current sensor management module to be calibrated 133, and the current data is calibrated in the current sensor management module to be calibrated 133 by using the calibration parameters that have been stored.
Optionally, the processor 13 is further configured to: acquiring calibration parameters from the current sensor 20 to be calibrated, and judging whether the acquired calibration parameters are correct or not;
if the calibration parameters are incorrect, the calibration parameters are again stored in the current sensor 20 to be calibrated.
In this implementation, the calibration parameters stored in the current sensor 20 to be calibrated are read out and verified to be correct, so as to eliminate errors caused in the storage process, thereby further ensuring the accuracy of the calibration process.
Optionally, the current source 11 is further configured to provide a test current signal;
the calibrated current sensor 12 is further configured to detect a test current signal of the current source 11 to obtain a test standard value;
the current sensor 20 to be calibrated is further configured to detect a test current signal of the current source 11 to obtain a test value;
the processor 13 is further configured to obtain a test standard value and a test value, and determine whether the precision of the calibration parameter reaches a preset threshold according to the test value and the test standard value.
In this embodiment, the current source 11 is used to provide a test current signal to test the precision of the calibration parameter, and the difference between the test value and the test standard value is compared to determine whether the precision of the calibrated current sensor to be tested reaches the expected precision.
Optionally, the processor 13 is further configured to: and if the precision of the calibration parameters does not reach the preset threshold value, the calibration parameters are obtained again.
In order to ensure the accuracy of the current sensor to be measured or the accuracy of the calibration parameter, the calibration parameter may be calculated again when the calibration parameter is lower than the preset threshold. And when the precision of the calibration parameters reaches a preset threshold value, completing the calibration of the current sensor to be calibrated.
In one embodiment, a current sensor is calibrated, and before the calibration is started, hardware and software devices of the calibration system are first detected to determine that all functional states of components in the system are normal. Accessing a current sensor to be calibrated into a calibration system, acquiring a signal of the calibrated current sensor by a processor, adjusting the output of a current source according to preset test current data to enable the output current to reach a preset current value, acquiring the signal of the current sensor to be calibrated, performing parameter calibration calculation on the signal of the current sensor to be calibrated by using the signal of the calibrated current sensor to obtain calibration parameters, writing the calibration parameters into a memory of the current sensor to be calibrated, reading the calibration parameters from the memory, comparing the calibration parameters with the written value to determine that no error occurs in the writing process, rewriting the calibration parameters into the memory if an error occurs, determining that the current sensor to be calibrated has a fault if the rewritten calibration parameters are still wrong, finishing calibration, and verifying the precision of the calibration parameters only if the rewritten calibration parameters are determined to be correct, and after the test signal of the calibrated current sensor and the test signal of the current sensor to be calibrated are obtained, precision calculation is carried out, the verification result proves that the precision of the calibration parameters reaches a preset value, the calibration is finished, if the verification result does not reach the preset value, the above process is repeated to recalculate the calibration parameters, and if the recalculated calibration parameters still cannot reach the preset value, the fault of the current sensor to be calibrated can be judged.
Fig. 3 is a flowchart of a current sensor calibration method according to an embodiment of the present application, which is applied to the current sensor calibration system according to the foregoing embodiment to calibrate at least one current sensor to be calibrated, and as shown in fig. 3, the method according to the present embodiment may include:
and S301, acquiring a standard value obtained by detecting a current signal of the current source by the calibrated current sensor.
S302, obtaining a current signal of a current source detected by the current sensor to be calibrated to obtain a value to be calibrated.
And S303, calibrating the value to be calibrated according to the standard value to obtain calibration parameters corresponding to the current sensor to be calibrated.
And S304, storing the calibration parameters into the current sensor to be calibrated.
For the specific implementation of this embodiment, reference may be made to the above-mentioned embodiments, which implement similar principles and technical effects, and are not described herein again.
Fig. 4 is a flowchart of a current sensor calibration method according to another embodiment of the present application, which is applied to the current sensor calibration system according to the foregoing embodiment to calibrate at least one current sensor to be calibrated, and as shown in fig. 4, the method according to this embodiment may include:
s401, obtaining a standard value obtained by detecting a current signal of a current source by the calibrated current sensor.
S402, acquiring a current signal of the current source.
And S403, controlling the current source according to the standard value to adjust the standard value.
S404, obtaining a current signal of a current source detected by the current sensor to be calibrated to obtain a value to be calibrated.
S405, calibrating the value to be calibrated according to the adjusted standard value to obtain calibration parameters corresponding to the current sensor to be calibrated.
And S406, storing the calibration parameters into the current sensor to be calibrated.
For the specific implementation of this embodiment, reference may be made to the above-mentioned embodiments, which implement similar principles and technical effects, and are not described herein again.
Fig. 5 is a flowchart of a current sensor calibration method according to another embodiment of the present application, which is applied to the current sensor calibration system according to the foregoing embodiment to calibrate at least one current sensor to be calibrated, and as shown in fig. 5, the method according to this embodiment may include:
s501, obtaining a standard value obtained by detecting a current signal of a current source by the calibrated current sensor.
And S502, acquiring a current signal of the current source.
And S503, controlling the current source according to the standard value to adjust the standard value.
S504, obtaining a current signal of a current source detected by the current sensor to be calibrated to obtain a value to be calibrated.
And S505, calibrating the value to be calibrated according to the adjusted standard value to obtain calibration parameters corresponding to the current sensor to be calibrated.
And S506, storing the calibration parameters into the current sensor to be calibrated.
And S507, acquiring calibration parameters from the current sensor to be calibrated.
S508, judging whether the acquired calibration parameters are correct or not; if yes, go to S509; otherwise, S506 is performed.
And S509, acquiring a test standard value obtained by testing a current signal of the current source detected by the calibrated current sensor.
And S510, obtaining a test value obtained by detecting a test current signal of the current source by the current sensor to be calibrated.
S511, judging whether the precision of the calibration parameters reaches a preset threshold value or not according to the test standard value and the test value, if so, executing S512; otherwise, S501 is executed.
And S512, completing the test.
For the specific implementation of this embodiment, reference may be made to the above-mentioned embodiments, which implement similar principles and technical effects, and are not described herein again.
The present application also provides a computer-readable storage medium, which stores a computer program that, when executed by a processor, implements the method as defined in any one of the above.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (12)
1. A current sensor calibration system for calibrating at least one current sensor to be calibrated, the system comprising:
a current source, a calibrated current sensor and a processor, the calibrated current sensor being connected between the current source and the processor, the at least one current sensor to be calibrated being for series connection with the current source and the calibrated current sensor and each current sensor to be calibrated being connected with the processor;
the current source is used for providing current signals for the calibrated current sensor and the current sensor to be calibrated;
the calibrated current sensor is used for detecting a current signal of the current source to obtain a standard value;
the current sensor to be calibrated is used for detecting a current signal of the current source to obtain a value to be calibrated;
the processor is configured to obtain the standard value and the value to be calibrated obtained by the current sensor to be calibrated, calibrate the value to be calibrated according to the standard value to obtain a calibration parameter corresponding to the current sensor to be calibrated, and store the calibration parameter in the current sensor to be calibrated.
2. The system of claim 1, wherein the processor is further coupled to the current source for controlling the current source to adjust the magnitude of the standard value according to the obtained standard value.
3. The system of claim 1, wherein the processor comprises: the device comprises a parameter calibration module, a calibrated current sensor management module and a current sensor management module to be calibrated, wherein the calibrated current sensor management module is connected with the parameter calibration module;
the calibrated current sensor management module is respectively connected with the calibrated current sensor and the current sensor to be calibrated, is used for acquiring the standard value and the value to be calibrated obtained by the current sensor to be calibrated, and sends the standard value and the value to be calibrated to the parameter calibration module;
the parameter calibration module is used for calibrating the value to be calibrated according to the standard value to obtain calibration parameters corresponding to the current sensor to be calibrated, and sending the calibration parameters to the current sensor management module to be calibrated;
and the current sensor management module to be calibrated is connected with the current sensor to be calibrated and is used for storing the calibration parameters into the current sensor to be calibrated.
4. The system of claim 1, wherein the processor is further configured to:
acquiring the calibration parameters from the current sensor to be calibrated, and judging whether the acquired calibration parameters are correct or not;
and if the calibration parameters are incorrect, storing the calibration parameters into the current sensor to be calibrated again.
5. The system according to any one of claims 1 to 4,
the current source is also used for providing a test current signal;
the calibrated current sensor is also used for detecting a test current signal of the current source to obtain a test standard value;
the current sensor to be calibrated is also used for detecting a test current signal of the current source to obtain a test value;
the processor is further configured to obtain the test standard value and the test value, and determine whether the precision of the calibration parameter reaches a preset threshold according to the test value and the test standard value.
6. The system of claim 5, wherein the processor is further configured to:
and if the precision of the calibration parameters does not reach the preset threshold value, the calibration parameters are obtained again.
7. A current sensor calibration method, for use in a current sensor calibration system according to claims 1-6, the method comprising:
acquiring a standard value obtained by detecting a current signal of the current source by the calibrated current sensor;
acquiring a value to be calibrated obtained by detecting a current signal of the current source by the current sensor to be calibrated;
calibrating the value to be calibrated according to the standard value to obtain calibration parameters corresponding to the current sensor to be calibrated;
and storing the calibration parameters into the current sensor to be calibrated.
8. The method of claim 7, wherein after obtaining the standard value obtained by detecting the current signal of the current source by the calibrated current sensor, further comprising:
acquiring a current signal of the current source;
controlling the current source according to the standard value to adjust the standard value;
the calibrating the value to be calibrated according to the standard value to obtain calibration parameters corresponding to the current sensor to be calibrated includes:
and calibrating the value to be calibrated according to the adjusted standard value to obtain calibration parameters corresponding to the current sensor to be calibrated.
9. The method of claim 7, further comprising:
acquiring the calibration parameters from the current sensor to be calibrated;
judging whether the acquired calibration parameters are correct or not;
and if the calibration parameters are incorrect, storing the calibration parameters into the current sensor to be calibrated again.
10. The method of claim 7, further comprising:
and if the calibration parameter is correct, testing whether the precision of the calibration parameter reaches a preset threshold value.
11. The method of claim 10, wherein the testing whether the accuracy of the calibration parameter reaches a preset threshold comprises:
acquiring a test standard value obtained by detecting a test current signal of the current source by the calibrated current sensor;
acquiring a test value obtained by detecting a test current signal of the current source by the current sensor to be calibrated;
and judging whether the precision of the calibration parameter reaches a preset threshold value according to the test standard value and the test value.
12. The method of claim 10 or 11, further comprising:
and if the precision of the calibration parameters does not reach the preset threshold value, the calibration parameters are obtained again.
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| CN111693921A (en) * | 2020-07-13 | 2020-09-22 | Tcl空调器(中山)有限公司 | Current calibration parameter generation method, current detection method, air conditioner and storage medium |
| CN113589214A (en) * | 2021-08-05 | 2021-11-02 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | CT secondary through-flow method for power plant |
| CN113804232A (en) * | 2021-08-20 | 2021-12-17 | 深圳市撰文科技有限公司 | Sensor calibration method and device and terminal equipment |
| DE102020213509A1 (en) | 2020-10-27 | 2022-04-28 | Vitesco Technologies GmbH | Method and device for calibrating a current sensor |
| CN115308664A (en) * | 2022-10-10 | 2022-11-08 | 苏州矩阵光电有限公司 | Calibration device and method of Hall current sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693921A (en) * | 2020-07-13 | 2020-09-22 | Tcl空调器(中山)有限公司 | Current calibration parameter generation method, current detection method, air conditioner and storage medium |
| DE102020213509A1 (en) | 2020-10-27 | 2022-04-28 | Vitesco Technologies GmbH | Method and device for calibrating a current sensor |
| CN113589214A (en) * | 2021-08-05 | 2021-11-02 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | CT secondary through-flow method for power plant |
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| CN113804232A (en) * | 2021-08-20 | 2021-12-17 | 深圳市撰文科技有限公司 | Sensor calibration method and device and terminal equipment |
| CN115308664A (en) * | 2022-10-10 | 2022-11-08 | 苏州矩阵光电有限公司 | Calibration device and method of Hall current sensor |
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