CN116381592A - Electromagnetic interference resistant device and method - Google Patents
Electromagnetic interference resistant device and method Download PDFInfo
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- CN116381592A CN116381592A CN202310185581.XA CN202310185581A CN116381592A CN 116381592 A CN116381592 A CN 116381592A CN 202310185581 A CN202310185581 A CN 202310185581A CN 116381592 A CN116381592 A CN 116381592A
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- 238000001514 detection method Methods 0.000 abstract description 4
- 238000002955 isolation Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/18—Screening arrangements against electric or magnetic fields, e.g. against earth's field
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses an anti-electromagnetic interference device and method, which belong to the technical field of electric energy meter detection and comprise an electric energy pulse input circuit, a low-pass filter and an electric energy pulse output circuit, wherein the low-pass filter is connected with the electric energy pulse input circuit, the electric energy pulse input circuit is used for receiving an electric energy pulse input signal input by an electric energy meter, the low-pass filter is used for filtering high-frequency interference signals in the electric energy pulse input signal, and the electric energy pulse input signal with the high-frequency interference signals filtered is converted into an infrared light pulse signal through the electric energy pulse input circuit; the electric energy pulse output circuit is used for receiving the infrared light pulse signal and converting the infrared light pulse signal into an electric energy pulse output signal through the electric energy pulse output circuit. The invention achieves the technical effects of strong electromagnetic interference resistance and difficult error occurrence of the tested electric energy error.
Description
Technical Field
The invention belongs to the technical field of electric energy meter detection, and particularly relates to an anti-electromagnetic interference device and method.
Background
The electric energy meter is an instrument for measuring electric energy, is used as a terminal product of the intelligent power grid, and is also a foundation for the construction of the intelligent power grid. The electromagnetic compatibility test of the electric energy meter is a comprehensive evaluation of electromagnetic interference and anti-interference capability of the electric energy meter.
At present, in the existing electric energy meter detection technology, a high-frequency interference signal corresponding to a generated test is generally coupled to a voltage end of an electric energy meter, and a corresponding test voltage and current signal are generated and are respectively applied to the voltage end and the current end of the electric energy meter. The error calculator receives the electric energy pulse of the electric energy meter and calculates an electric energy error of the electric energy meter. However, in the process of the test, the generated high-frequency interference signal is easily conducted to the signal output terminal of the electric energy meter, so that the high-frequency interference signal exists in the electric energy pulse signal output by the electric energy meter. The high-frequency interference signal is transmitted to the pulse input end of the error calculator through the pulse connecting wire, and the error calculator can mistakenly take the high-frequency interference signal as the detected electric energy pulse signal to participate in calculation, so that the tested electric energy error is wrong, and the anti-electromagnetic interference capability is weak. In summary, in the existing electric energy meter detection technology, there is a technical problem that the anti-electromagnetic interference capability is weak, and the tested electric energy error is easy to generate errors.
Disclosure of Invention
The invention aims to solve the technical problems that the electromagnetic interference resistance is weak and the tested electric energy error is easy to generate errors.
In order to solve the above technical problems, the present invention provides an electromagnetic interference resistant device, which includes: the low-pass filter is connected with the electric energy pulse input circuit, the electric energy pulse input circuit is used for receiving an electric energy pulse input signal input by the electric energy meter, the low-pass filter is used for filtering high-frequency interference signals in the electric energy pulse input signal, and the electric energy pulse input signal with the high-frequency interference signals filtered is converted into an infrared light pulse signal through the electric energy pulse input circuit; the electric energy pulse output circuit is used for receiving the infrared light pulse signal and converting the infrared light pulse signal into an electric energy pulse output signal through the electric energy pulse output circuit.
Further, the electric energy pulse input circuit includes: the infrared transmitter is used for transmitting infrared light pulse signals.
Further, the low-pass filter includes: the third resistor is connected with the first resistor and the second triode respectively, and the first capacitor is connected with the third resistor and the first triode respectively.
Further, the electric energy pulse output circuit includes: the fourth resistor is connected with the infrared receiver, and the infrared receiver is used for receiving the infrared light pulse signals.
Further, the apparatus further comprises: and the power supply unit is connected with the electric energy pulse input circuit.
Further, the power supply unit is a battery.
Further, the apparatus further comprises: and the measuring device is connected with the electric energy pulse output circuit.
Further, the apparatus further comprises: the interference generator is respectively connected with the electric energy meter and the measuring device.
According to yet another aspect of the present invention, there is also provided a method of resisting electromagnetic interference, the method comprising: receiving an electric energy pulse input signal input by an electric energy meter; filtering high-frequency interference signals in the electric energy pulse input signals, and converting the electric energy pulse input signals into infrared light pulse signals; receiving an infrared light pulse signal, and converting the infrared light pulse signal into an electric energy pulse output signal.
Further, the filtering the high-frequency interference signal in the electric energy pulse input signal, and converting the electric energy pulse input signal into the infrared light pulse signal includes: the infrared transmitter is used for converting the electric energy pulse input signals for filtering high-frequency interference signals into infrared light pulse signals, and the infrared transmitter is used for converting the electric energy pulse input signals for filtering the high-frequency interference signals into infrared light pulse signals.
The beneficial effects are that:
the invention provides an electromagnetic interference resisting device, which is connected with an electric energy pulse input circuit through a low-pass filter, wherein the electric energy pulse input circuit is used for receiving an electric energy pulse input signal input by an electric energy meter, the low-pass filter is used for filtering high-frequency interference signals in the electric energy pulse input signal, and the electric energy pulse input signal with the high-frequency interference signals filtered is converted into an infrared light pulse signal through the electric energy pulse input circuit; the electric energy pulse output circuit is used for receiving the infrared light pulse signal and converting the infrared light pulse signal into an electric energy pulse output signal through the electric energy pulse output circuit. In the electromagnetic compatibility test process of the electric energy meter, the electric energy pulse input circuit and the low-pass filter can be subjected to photoelectric isolation with the electric energy pulse output circuit, so that the electric energy meter and an error calculator of the electric energy meter calibrating device are subjected to electric isolation, and interference signals in electric energy pulse signals of the electric energy meter are filtered. And infrared emission and receiving are adopted, interference of natural light in the environment is avoided in the photoelectric conversion process of the electric energy pulse signal, then the electric energy pulse signal without electromagnetic interference can be obtained, the accuracy of the electric energy error of the electric energy meter calculated by the error calculator of the electric energy meter calibrating device is improved, and the electric energy error tested by the electric energy meter calibrating device is not easy to be wrong. Therefore, the technical effect that the electromagnetic interference resistance is strong, and the tested electric energy error is not easy to cause errors is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of an electromagnetic interference resisting device according to an embodiment of the present invention;
fig. 2 is a schematic diagram two of an electromagnetic interference resisting device according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an electrical energy pulse timing sequence in an electromagnetic interference resisting device according to an embodiment of the present invention.
Fig. 4 is a flowchart of a method for anti-electromagnetic interference according to an embodiment of the present invention.
Detailed Description
The invention discloses an anti-electromagnetic interference device, which is connected with an electric energy pulse input circuit through a low-pass filter, wherein the electric energy pulse input circuit is used for receiving an electric energy pulse input signal input by an electric energy meter 3, the low-pass filter is used for filtering high-frequency interference signals in the electric energy pulse input signal, and the electric energy pulse input signal with the high-frequency interference signals filtered is converted into an infrared light pulse signal through the electric energy pulse input circuit; the electric energy pulse output circuit is used for receiving the infrared light pulse signal and converting the infrared light pulse signal into an electric energy pulse output signal through the electric energy pulse output circuit. In the process of electromagnetic compatibility test of the electric energy meter 3, the electric energy pulse input circuit and the low-pass filter can be subjected to photoelectric isolation with the electric energy pulse output circuit, so that the electric energy meter 3 and the error calculator 11 of the calibrating device of the electric energy meter 3 are subjected to electric isolation, and interference signals in electric energy pulse signals of the electric energy meter 3 are filtered. And infrared emission and receiving are adopted, interference of natural light of the environment is avoided in the photoelectric conversion process of the electric energy pulse signal, then the electric energy pulse signal without electromagnetic interference can be obtained, the accuracy of the electric energy error of the electric energy meter 3 calculated by the error calculator 11 of the electric energy meter 3 calibrating device is improved, and the electric energy error tested by the electric energy meter 3 calibrating device is not easy to be wrong. Therefore, the technical effect that the electromagnetic interference resistance is strong, and the tested electric energy error is not easy to cause errors is achieved.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments of the present invention are within the scope of the present invention; wherein reference to "and/or" in this embodiment indicates and/or two cases, in other words, reference to a and/or B in the embodiments of the present invention indicates two cases of a and B, A or B, and describes three states in which a and B exist, such as a and/or B, and indicates: only A and not B; only B and not A; includes A and B.
It will be understood that, although the terms "first," "second," etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments. Spatially relative terms, such as "below," "above," and the like, may be used herein to facilitate a description of one element or feature's relationship to another element or feature. It will be understood that the spatially relative terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or features described as "below" would then be oriented "on" other elements or features. Thus, the exemplary term "below" may include both above and below orientations. The device may be oriented (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Also, in embodiments of the present invention, when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical", "horizontal", "left", "right" and the like are used in the embodiments of the present invention for illustrative purposes only and are not intended to limit the present invention.
Example 1
Referring to fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic diagram of an electromagnetic interference resisting device according to an embodiment of the present invention; fig. 2 is a schematic diagram two of an electromagnetic interference resisting device according to an embodiment of the present invention; fig. 3 is a schematic diagram of a power pulse timing sequence in an electromagnetic interference resisting device according to an embodiment of the present invention. The first embodiment of the invention provides an electromagnetic interference resisting device, which comprises an electric energy pulse input circuit, a low-pass filter and an electric energy pulse output circuit, wherein the electric energy pulse input circuit, the low-pass filter and the electric energy pulse output circuit are respectively described in detail below:
for the power pulse input circuit and the low pass filter:
the low-pass filter is connected with the electric energy pulse input circuit, the electric energy pulse input circuit is used for receiving an electric energy pulse input signal input by the electric energy meter 3, the low-pass filter is used for filtering high-frequency interference signals in the electric energy pulse input signal, and the electric energy pulse input signal with the high-frequency interference signals filtered is converted into an infrared light pulse signal through the electric energy pulse input circuit. The electric energy pulse input circuit comprises a first resistor, a second resistor, an infrared emitter and a first triode which are sequentially connected, wherein the first resistor is connected with the second triode of the electric energy meter 3, and the infrared emitter is used for emitting infrared light pulse signals. The low-pass filter comprises a third resistor and a first capacitor, wherein the third resistor is respectively connected with the first resistor and the second triode, and the first capacitor is respectively connected with the third resistor and the first triode.
Specifically, referring to fig. 1, the first resistor in the power pulse input circuit is R1, and the first resistor is a resistor; the second resistor in the electric energy pulse input circuit is R2, and the second resistor is a resistor; the infrared emitter in the electric energy pulse input circuit is an LED, namely an infrared emission tube LED which is a light emitting device capable of directly converting electric energy into infrared light and radiating the infrared light; the first triode in the electric energy pulse input circuit is Q2, and the first triode is a triode. The third resistor in the low-pass filter is R4, and the third resistor is a resistor; the first capacitor in the low-pass filter is referred to as C1, and the first capacitor is referred to as a capacitor. The second triode of the electric energy meter 3 is Q1, and the second triode is a triode. The electric energy pulse input signal input by the electric energy meter 3 can be received by an electric energy pulse input circuit formed by R1, R2, an infrared emission tube LED and Q2, the RC low-pass filter formed by R4 and C1 can filter high-frequency interference signals in the electric energy pulse input signal, and the electric energy pulse input signal of the electric energy meter 3 is a low-frequency signal, so that the RC low-pass filter does not influence the electric energy pulse input signal. The electric energy pulse input signal after the high-frequency interference signal is filtered by the RC low-pass filter can be converted into an infrared light pulse signal through an infrared emitter in the electric energy pulse input circuit.
For a power pulse output circuit:
the electric energy pulse output circuit is used for receiving the infrared light pulse signal and converting the infrared light pulse signal into an electric energy pulse output signal through the electric energy pulse output circuit. The electric energy pulse output circuit comprises a fourth resistor and an infrared receiver, wherein the fourth resistor is connected with the infrared receiver, and the infrared receiver is used for receiving the infrared light pulse signals.
Specifically, the fourth resistor in the electric energy pulse output circuit is R3, and the fourth resistor is a resistor. The infrared receiver in the electric energy pulse output circuit is Q3, namely an infrared receiving tube, and the infrared receiving tube is a semiconductor device for receiving and sensing infrared rays emitted by an infrared emitting tube LED and converting infrared optical signals into electric signals. R3 and Q3 form electric energy pulse output circuit, and infrared receiver in the electric energy pulse output circuit receives the infrared light pulse signal who converts through infrared transmitter, forms into photoelectric isolation between infrared receiver and infrared transmitter, and infrared receiver can receive the infrared light pulse signal that infrared transmitter launched, can avoid electric energy pulse signal to receive the interference influence of the environment natural light in photoelectric conversion process. And then the received infrared light pulse signals are converted into electric energy pulse output signals through an electric energy pulse output circuit, so that the electric energy pulse output signals without interference signals are obtained. The power pulse input circuit, the low-pass filter and the power pulse output circuit may form an anti-interference device 4, and the anti-interference device 4 is installed between the electric energy meter 3 and the error calculator 11 in the measuring device 1, so as to realize electrical isolation between the error calculator 11 and the electric energy meter 3.
The device for resisting electromagnetic interference provided by the embodiment of the invention further comprises: the power supply unit, the measuring device 1 and the interference generator 2 are connected with the electric energy pulse input circuit. The power supply unit is a battery. The measuring device 1 is connected with the electric energy pulse output circuit. The interference generator 2 is connected to the electric energy meter 3 and the measuring device 1, respectively.
Specifically, the power supply unit can adopt batteries such as lithium batteries and storage batteries to supply power for the electric energy pulse input circuit, so that interference signals generated when external power grids are adopted for supplying power can be avoided, interference signals in the electric energy pulse output signals are reduced, and accuracy of electric energy errors of the electric energy meter 3 calculated by the error calculator 11 is improved. The measuring device 1 may refer to a measuring device 1 of the electric energy meter 3, wherein an error calculator 11 in the measuring device 1 is connected with an electric energy pulse output circuit, the error calculator 11 can receive the electric energy pulse output signal without the interference signal, and the electric energy pulse output signal without the interference signal participates in calculation, so that the tested electric energy error is not easy to generate errors.
In actual operation, when the electric energy pulse of the electric energy meter 3 is at a high level, that is, the electric energy pulse input signal input by the electric energy meter 3 is at a high level, at this time, the second triode of the electric energy meter 3 is turned on, the base electrode of the first triode in the electric energy pulse input circuit is at a low level, the first triode is not turned on, the infrared transmitter is not turned on, therefore, the infrared receiver does not receive the infrared light signal of the infrared transmitter, the infrared receiver is not turned on, and the collector electrode end of the infrared receiver is at a high level. When the output electric energy pulse of the electric energy meter 3 is at a low level, namely the electric energy pulse input signal input by the electric energy meter 3 is at a low level, at the moment, the second triode inside the electric energy meter 3 is not conducted, the base electrode of the first triode in the electric energy pulse input circuit is at a high level, the first triode is conducted, the infrared transmitter is lightened, therefore, the infrared receiver receives an infrared light signal generated by the infrared transmitter, the infrared receiver is conducted, and the collecting electrode end of the infrared receiver is at a low level. Referring to fig. 3, fig. 3 is a schematic diagram of a pulse timing sequence of electric energy in an electromagnetic interference resisting device according to an embodiment of the present invention, a pulse output timing sequence diagram of an electric energy meter 3 electric energy pulse and an anti-interference device 4 is shown in fig. 3, and in fig. 3, pulse output timings corresponding to the above Q1, Q2 and Q3 are respectively shown, and it can be seen from fig. 3 that the pulse output of the anti-interference device 4 is consistent with the pulse output timing sequence of the electric energy meter 3. Thus, when the output power pulse of the electric energy meter 3 is at a high level, the anti-interference device 4 outputs the high level; when the output power pulse of the power meter 3 is at a low level, the tamper 4 outputs a low level. The electric energy meter 3 pulse is converted into an optical signal from an electric signal, and then is converted into an electric signal from the optical signal. Through the photoelectric isolation and low-pass filtering technology, after the electric energy meter 3 and the error calculator 11 are electrically isolated, the interference signals are blocked from entering the error calculator 11 in a conduction mode, so that the interference signals in the electric energy pulse signals are filtered. And then, through an infrared emission receiving technology, the interference influence of the natural light of the environment, which is suffered by the electric energy pulse signal in the photoelectric conversion process, can be avoided. Then in the electromagnetic compatibility test of the electric energy meter 3, an electric energy pulse signal without an interference signal can be obtained, so that the electric energy meter 3 calibrating device can accurately calculate an electric energy error.
The invention provides an electromagnetic interference resisting device, which is connected with an electric energy pulse input circuit through a low-pass filter, wherein the electric energy pulse input circuit is used for receiving an electric energy pulse input signal input by an electric energy meter 3, the low-pass filter is used for filtering high-frequency interference signals in the electric energy pulse input signal, and the electric energy pulse input signal with the high-frequency interference signals filtered is converted into an infrared light pulse signal through the electric energy pulse input circuit; the electric energy pulse output circuit is used for receiving the infrared light pulse signal and converting the infrared light pulse signal into an electric energy pulse output signal through the electric energy pulse output circuit. In the process of electromagnetic compatibility test of the electric energy meter 3, the electric energy pulse input circuit and the low-pass filter can be subjected to photoelectric isolation with the electric energy pulse output circuit, so that the electric energy meter 3 and the error calculator 11 of the calibrating device of the electric energy meter 3 are subjected to electric isolation, and interference signals in electric energy pulse signals of the electric energy meter 3 are filtered. And infrared emission and receiving are adopted, interference of natural light of the environment is avoided in the photoelectric conversion process of the electric energy pulse signal, then the electric energy pulse signal without electromagnetic interference can be obtained, the accuracy of the electric energy error of the electric energy meter 3 calculated by the error calculator 11 of the electric energy meter 3 calibrating device is improved, and the electric energy error tested by the electric energy meter 3 calibrating device is not easy to be wrong. Therefore, the technical effect that the electromagnetic interference resistance is strong, and the tested electric energy error is not easy to cause errors is achieved.
In order to describe the method for resisting electromagnetic interference provided by the invention in detail, the embodiment describes the device for resisting electromagnetic interference in one-to-one correspondence in detail, and based on the same inventive concept, the application also provides a method for resisting electromagnetic interference, and details of which are described in the second embodiment.
Example two
The second embodiment of the invention provides an electromagnetic interference resisting method, which comprises the following steps:
step S100, receiving an electric energy pulse input signal input by an electric energy meter 3;
step S200, filtering high-frequency interference signals in the electric energy pulse input signals, and converting the electric energy pulse input signals into infrared light pulse signals;
step S300, receiving an infrared light pulse signal, and converting the infrared light pulse signal into an electric energy pulse output signal. The filtering the high-frequency interference signal in the electric energy pulse input signal, converting the electric energy pulse input signal into an infrared light pulse signal comprises the following steps: the infrared transmitter is characterized in that the first resistor, the second resistor, the infrared transmitter and the first triode are sequentially connected, the first resistor is connected with the second triode of the electric energy meter 3, the third resistor is respectively connected with the first resistor and the second triode, and the first capacitor is respectively connected with the third resistor and the first triode, so that the electric energy pulse input signals capable of filtering high-frequency interference signals are converted into infrared light pulse signals through the infrared transmitter.
The invention provides an anti-electromagnetic interference method, which is characterized by receiving an electric energy pulse input signal input by an electric energy meter 3; filtering high-frequency interference signals in the electric energy pulse input signals, and converting the electric energy pulse input signals into infrared light pulse signals; receiving an infrared light pulse signal, and converting the infrared light pulse signal into an electric energy pulse output signal. In the process of electromagnetic compatibility test of the electric energy meter 3, the electric energy pulse input circuit and the low-pass filter can be subjected to photoelectric isolation with the electric energy pulse output circuit, so that the electric energy meter 3 and the error calculator 11 of the calibrating device of the electric energy meter 3 are subjected to electric isolation, and interference signals in electric energy pulse signals of the electric energy meter 3 are filtered. And infrared emission and receiving are adopted, interference of natural light of the environment is avoided in the photoelectric conversion process of the electric energy pulse signal, then the electric energy pulse signal without electromagnetic interference can be obtained, the accuracy of the electric energy error of the electric energy meter 3 calculated by the error calculator 11 of the electric energy meter 3 calibrating device is improved, and the electric energy error tested by the electric energy meter 3 calibrating device is not easy to be wrong. Therefore, the technical effect that the electromagnetic interference resistance is strong, and the tested electric energy error is not easy to cause errors is achieved.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present invention.
Claims (10)
1. An electromagnetic interference resistant apparatus, said apparatus comprising: the low-pass filter is connected with the electric energy pulse input circuit, the electric energy pulse input circuit is used for receiving an electric energy pulse input signal input by the electric energy meter, the low-pass filter is used for filtering high-frequency interference signals in the electric energy pulse input signal, and the electric energy pulse input signal with the high-frequency interference signals filtered is converted into an infrared light pulse signal through the electric energy pulse input circuit; the electric energy pulse output circuit is used for receiving the infrared light pulse signal and converting the infrared light pulse signal into an electric energy pulse output signal through the electric energy pulse output circuit.
2. The electromagnetic interference resistant device of claim 1 wherein the power pulse input circuit comprises: the infrared transmitter is used for transmitting infrared light pulse signals.
3. The apparatus for immunity to electromagnetic interference of claim 2, wherein the low pass filter comprises: the third resistor is connected with the first resistor and the second triode respectively, and the first capacitor is connected with the third resistor and the first triode respectively.
4. The apparatus of claim 2, wherein the power pulse output circuit comprises: the fourth resistor is connected with the infrared receiver, and the infrared receiver is used for receiving the infrared light pulse signals.
5. The electromagnetic interference resistant device of claim 1, further comprising: and the power supply unit is connected with the electric energy pulse input circuit.
6. The electromagnetic interference resistant device of claim 5, wherein: the power supply unit is a battery.
7. The electromagnetic interference resistant device of claim 1, further comprising: and the measuring device is connected with the electric energy pulse output circuit.
8. The electromagnetic interference resistant apparatus as recited in claim 7, further comprising: the interference generator is respectively connected with the electric energy meter and the measuring device.
9. A method of combating electromagnetic interference, said method comprising:
receiving an electric energy pulse input signal input by an electric energy meter;
filtering high-frequency interference signals in the electric energy pulse input signals, and converting the electric energy pulse input signals into infrared light pulse signals;
receiving an infrared light pulse signal, and converting the infrared light pulse signal into an electric energy pulse output signal.
10. The method of claim 9, wherein filtering high frequency interference signals from the power pulse input signal, converting the power pulse input signal into an infrared light pulse signal comprises: the infrared transmitter is used for converting the electric energy pulse input signals for filtering high-frequency interference signals into infrared light pulse signals, and the infrared transmitter is used for converting the electric energy pulse input signals for filtering the high-frequency interference signals into infrared light pulse signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310185581.XA CN116381592A (en) | 2023-03-01 | 2023-03-01 | Electromagnetic interference resistant device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310185581.XA CN116381592A (en) | 2023-03-01 | 2023-03-01 | Electromagnetic interference resistant device and method |
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| CN116381592A true CN116381592A (en) | 2023-07-04 |
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| CN202310185581.XA Pending CN116381592A (en) | 2023-03-01 | 2023-03-01 | Electromagnetic interference resistant device and method |
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