CN112858982A - Method and system for testing reliability of current sensor - Google Patents
Method and system for testing reliability of current sensor Download PDFInfo
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- CN112858982A CN112858982A CN202110208869.5A CN202110208869A CN112858982A CN 112858982 A CN112858982 A CN 112858982A CN 202110208869 A CN202110208869 A CN 202110208869A CN 112858982 A CN112858982 A CN 112858982A
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Abstract
The application discloses a method and a system for testing the reliability of a current sensor. The method comprises the following steps of placing a current sensor to be tested in an environment test box, adjusting the environment of the environment test box to a preset temperature and a preset relative humidity, and applying a preset voltage to the current sensor to be tested for a preset duration; after the current sensor to be tested recovers to a normal-temperature static test environment, applying current to be tested to the current sensor, and measuring output current or output voltage of the current sensor to obtain a first test result; and judging the reliability state of the current sensor to be tested according to the first test result.
Description
Technical Field
The present application relates to the field of power system technologies, and in particular, to a method and a system for testing reliability of a current sensor.
Background
Along with the construction of the energy Internet of things and the deepening of the complexity of intelligent equipment, more and more current sensors are applied in an automatic control and detection system, and the requirement on the reliability of the current sensors is continuously improved while the accuracy of the current sensors is required. The current sensor mainly comprises a current transformer, a Rogowski coil, a Hall sensor, a magnetoresistive sensor and the like. The performance degradation of the current sensor is mainly manifested in a drift of the output current (or voltage).
In the prior art, a standard current sensor reliability testing method and a standard reliability evaluation method are not available, and how to perform reliability testing on a current sensor is achieved, so that a product can better meet the field application requirement, and the technical problem to be solved before high-reliability application is ensured.
Disclosure of Invention
The embodiment of the disclosure provides a method and a system for testing the reliability of a current sensor, so as to at least solve the technical problems that how to test the reliability of the current sensor in the prior art, so that a product better meets the field application requirement, and the high-reliability application is ensured.
According to an aspect of an embodiment of the present disclosure, there is provided a method of testing reliability of a current sensor, including: placing a current sensor to be tested in an environmental test chamber, adjusting the environment of the environmental test chamber to a preset temperature and a preset relative humidity, and applying a preset voltage to the current sensor to be tested for a preset duration; after the current sensor to be tested recovers to a normal-temperature static test environment, applying current to be tested to the current sensor, and measuring output current or output voltage of the current sensor to obtain a first test result; and judging the reliability state of the current sensor to be tested according to the first test result.
According to another aspect of the embodiments of the present disclosure, there is also provided a system for testing reliability of a current sensor, including: the current generating device is used for providing a measuring current for the current sensor to be tested; the environment test box is used for containing the current sensor to be tested and adjusting the environment temperature and humidity of the current sensor to be tested; the power supply device is used for providing power supply for the current sensor to be tested and controlling the test state of the current sensor; and the data detection device is used for detecting detection data of the current sensor to be tested, and determining the reliability state of the current sensor according to the detection data, wherein the detection data comprises output current or output voltage data.
In the invention, the current sensor is aged by adding high temperature and high humidity, and the output quantity of the current sensor is selected as a degradation index for testing, so that the reliability of different types of current sensors in high-temperature and high-humidity environments can be verified.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the disclosure and together with the description serve to explain the disclosure and not to limit the disclosure. In the drawings:
FIG. 1 is a schematic flow chart diagram of a method of testing reliability of a current sensor according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a system for testing the reliability of a current sensor according to an embodiment of the present disclosure.
Detailed Description
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
According to a first aspect of the present embodiment, there is provided a method 100 for testing reliability of a current sensor, as shown with reference to fig. 1, the system 100 comprising:
s102, placing a current sensor to be tested in an environment test box, adjusting the environment of the environment test box to a preset temperature and a preset relative humidity, and applying a preset voltage to the current sensor to be tested for a preset time;
s104, after the current sensor to be tested recovers to a normal-temperature static test environment, applying current to be tested to the current sensor, and measuring output current or output voltage of the current sensor to obtain a first test result;
and S106, judging the reliability state of the current sensor to be tested according to the first test result.
Specifically, the following further description is made:
A. and (5) performing initial testing. Under a normal-temperature static test environment, outputting a group of current values by a current generating device, wherein the group of current values to be tested is in the upper limit range and the lower limit range of a current sensor and is generally 6-11 points uniformly distributed, the current values are gradually increased from the minimum to the maximum, the current sensor to be tested measures the group of current values and outputs voltage or current data, an output result is checked, and the following steps are continued if the output result accords with a design index.
B. Placing a current sensor to be tested in an environmental test chamber, adjusting the environment of the environmental test chamber to a preset temperature and a preset relative humidity, applying a preset voltage to the current sensor to be tested for a preset time, wherein the value range of the preset temperature is 40-85 ℃, the value range of the preset relative humidity is 80-90%, the preset voltage is a typical power supply voltage of the current sensor, and the value range of the preset time is 24-144 h;
C. restoring the current sensor to be tested to a normal-temperature static test environment, applying current to be tested to the current sensor after the restoration stage is completed, measuring the output current or the output voltage of the current sensor, checking the output result, and determining whether the reliability meets the index requirement or not by judging whether the output result is consistent with the expectation or not.
Taking the reliability test of a magnetoresistive current sensor as an example, the test range of the current sensor is 0-120A, the transformation ratio is 1:2500, the basic error is 0.2%, the working voltage is 3.3V, and the reliability test method of the current output type current sensor is as follows:
A. and (5) performing initial testing. Under a normal-temperature static test environment (the temperature is 15-25 ℃, the relative humidity is 45-75%, and the atmospheric pressure is 86-106 kPa), a group of current values [0.5A, 1A, 5A, 10A, 20A, 40A, 60A, 80A, 100A, and 120A ] are sequentially output by a current generating device, when a 3.3V power supply device supplies power to a test current sensor, the current sensor measures the group of current values and outputs voltage or current data, an output current result is checked, and if the output result meets a design index (basic error), the following steps are continued.
B. Placing a current sensor to be tested in an environmental test chamber, adjusting the environment of the environmental test chamber to a preset temperature and a preset relative humidity, applying 3.3V voltage bias and continuing for a preset time, wherein the value range of the preset temperature is 40-85 ℃, the value range of the preset relative humidity is 80-90%, and the value range of the preset time is 24-144 h;
C. and C, restoring the current sensor to be tested to a normal-temperature static test environment, applying the current value obtained in the step A to the current sensor after the restoration stage is completed, measuring the output current or the output voltage of the current sensor, checking the output result, and determining whether the reliability meets the index requirement by determining whether the output result meets the design index (basic error).
In the embodiment of the invention, the current sensor comprises a Hall current sensor and a reluctance current sensor according to the sensing principle. The current sensor includes a voltage output type current sensor and a current output type current sensor according to the output type.
According to the embodiment, the current sensor is aged by adding high temperature and high humidity, the output quantity of the current sensor is selected as a degradation index to be tested, and the reliability of different types of current sensors in the high-temperature and high-humidity environment can be verified.
Optionally, before placing the current sensor to be tested in the environmental test chamber, the method further comprises: under a normal-temperature static test environment, applying a current to be detected to a current sensor to be detected, and measuring the output current or the output voltage of the current sensor to be detected to obtain a second test result; and judging the reliability state of the current sensor to be tested according to the second test result, and executing the step of placing the current sensor to be tested in an environmental test chamber when the reliability state of the current sensor to be tested accords with the test design index.
Optionally, determining the reliability state of the current sensor to be tested according to the first test result includes: judging whether the first test result meets the reliability design index; when the first test result accords with a reliability design index, determining that the current sensor to be tested is reliable; and when the first test result does not accord with the reliability index design, determining that the current sensor to be tested is unreliable.
In accordance with another aspect of the present embodiment, a system 200 for testing reliability of a current sensor, as illustrated with reference to fig. 2, the system 200 includes: a current generating device 210 for providing a measuring current to the current sensor to be tested; the environmental test box 220 is used for accommodating the current sensor to be tested and adjusting the environmental temperature and humidity of the current sensor to be tested; a power supply device 230 for providing power to the current sensor to be tested and controlling the test state of the current sensor; and the data detection device 240 is used for detecting detection data of the current sensor to be tested, and determining the reliability state of the current sensor according to the detection data, wherein the detection data comprises output current or output voltage data.
Optionally, the system 200 further comprises: the measuring current is contact or contactless.
Optionally, the system 200 comprises: the current sensor to be tested is a voltage output type current sensor or a current output type current sensor.
The system 500 for testing reliability of a current sensor according to an embodiment of the present invention corresponds to the method 100 for testing reliability of a current sensor according to another embodiment of the present invention, and is not described herein again.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein. The scheme in the embodiment of the application can be implemented by adopting various computer languages, such as object-oriented programming language Java and transliterated scripting language JavaScript.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (6)
1. A method of testing the reliability of a current sensor, comprising:
placing a current sensor to be tested in an environmental test chamber, adjusting the environment of the environmental test chamber to a preset temperature and a preset relative humidity, and applying a preset voltage to the current sensor to be tested for a preset duration;
after the current sensor to be tested recovers to a normal-temperature static test environment, applying current to be tested to the current sensor, and measuring output current or output voltage of the current sensor to obtain a first test result;
and judging the reliability state of the current sensor to be tested according to the first test result.
2. The method of claim 1, further comprising, prior to placing the current sensor to be tested in the environmental test chamber:
under a normal-temperature static test environment, applying a current to be detected to a current sensor to be detected, and measuring the output current or the output voltage of the current sensor to be detected to obtain a second test result;
and judging the reliability state of the current sensor to be tested according to the second test result, and when the reliability state of the current sensor to be tested accords with the test design index, executing the step of placing the current sensor to be tested in an environmental test chamber.
3. The method of claim 1, wherein determining the reliability status of the current sensor under test according to the first test result comprises:
judging whether the first test result meets the reliability design index;
when the first test result accords with a reliability design index, determining that the current sensor to be tested is reliable;
and when the first test result does not accord with the reliability index design, determining that the current sensor to be tested is unreliable.
4. A system for testing the reliability of a current sensor, the system comprising:
the current generating device is used for providing a measuring current for the current sensor to be tested;
the environment test box is used for containing the current sensor to be tested and adjusting the environment temperature and humidity of the current sensor to be tested;
the power supply device is used for providing power supply for the current sensor to be tested and controlling the test state of the current sensor;
and the data detection device is used for detecting detection data of the current sensor to be tested, and determining the reliability state of the current sensor according to the detection data, wherein the detection data comprises output current or output voltage data.
5. The system of claim 4, further comprising:
the measuring current is contact or contactless.
6. The system of claim 4, wherein the system comprises:
the current sensor to be tested is a voltage output type current sensor or a current output type current sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110208869.5A CN112858982A (en) | 2021-02-24 | 2021-02-24 | Method and system for testing reliability of current sensor |
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| CN202110208869.5A CN112858982A (en) | 2021-02-24 | 2021-02-24 | Method and system for testing reliability of current sensor |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730479A (en) * | 2013-12-18 | 2015-06-24 | 比亚迪股份有限公司 | Current sensor detection device and method |
| CN108872911A (en) * | 2018-08-27 | 2018-11-23 | 格林美（武汉）城市矿产循环产业园开发有限公司 | A kind of Hall current sensor response curve automatic detection device and detection method |
| CN109917317A (en) * | 2019-03-21 | 2019-06-21 | 河北申科电力股份有限公司 | Hall current sensor calibration detection apparatus and method |
| CN111766489A (en) * | 2019-03-27 | 2020-10-13 | 中车株洲电力机车研究所有限公司 | Reliability test method and system for power semiconductor device |
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- 2021-02-24 CN CN202110208869.5A patent/CN112858982A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730479A (en) * | 2013-12-18 | 2015-06-24 | 比亚迪股份有限公司 | Current sensor detection device and method |
| CN108872911A (en) * | 2018-08-27 | 2018-11-23 | 格林美（武汉）城市矿产循环产业园开发有限公司 | A kind of Hall current sensor response curve automatic detection device and detection method |
| CN109917317A (en) * | 2019-03-21 | 2019-06-21 | 河北申科电力股份有限公司 | Hall current sensor calibration detection apparatus and method |
| CN111766489A (en) * | 2019-03-27 | 2020-10-13 | 中车株洲电力机车研究所有限公司 | Reliability test method and system for power semiconductor device |
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