CN113219286B - Multistage electromagnetic disturbance measurement system, method and equipment of electric intelligent equipment and storage medium - Google Patents
Multistage electromagnetic disturbance measurement system, method and equipment of electric intelligent equipment and storage medium Download PDFInfo
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- CN113219286B CN113219286B CN202110545020.7A CN202110545020A CN113219286B CN 113219286 B CN113219286 B CN 113219286B CN 202110545020 A CN202110545020 A CN 202110545020A CN 113219286 B CN113219286 B CN 113219286B
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- 238000005259 measurement Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000001629 suppression Effects 0.000 claims abstract description 20
- 238000000691 measurement method Methods 0.000 claims abstract description 5
- 238000004590 computer program Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 7
- 238000012795 verification Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 18
- 230000006870 function Effects 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 239000004020 conductor Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
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Classifications
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
- G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
Abstract
The invention discloses a multistage electromagnetic disturbance measurement system, a multistage electromagnetic disturbance measurement method, multistage electromagnetic disturbance measurement equipment and a storage medium of electric intelligent equipment, wherein the method comprises the following steps: acquiring an electric signal of at least one port to be tested of the electric intelligent equipment; inputting the electric signals of the port to be tested into a corresponding analog circuit according to the types; carrying out multistage electromagnetic disturbance acquisition on the analog circuit; the invention inputs the electric signal of the port to be tested into the corresponding analog circuit according to the type; and electromagnetic interference of the analog circuit is measured by adopting a multi-stage electromagnetic disturbance acquisition mode, so that the electromagnetic interference received by the electric intelligent equipment is accurately reflected, workers can conveniently study the generation mechanism of the electromagnetic interference of the electric intelligent equipment, and an interference suppression method and verification are provided.
Description
Technical Field
The invention relates to a multistage electromagnetic disturbance measurement system, method and equipment of electric intelligent equipment and a storage medium, belonging to the technical field of electromagnetic interference.
Background
The conducted interference is caused by electromagnetic disturbance generated by various electric equipment to propagate along the transmission line. Conducted interference is divided into two main categories: common mode interference and differential mode interference. Common mode interference (Common-mode Interference) is defined as an unwanted potential difference between any current carrying conductor and a reference ground; differential-mode interference (Differential-mode Interference) is defined as an unwanted potential difference between any two current carrying conductors.
Any conducted interference signal can be represented by differential and common mode signals. The differential mode interference is transmitted between two wires, and belongs to symmetry interference; common mode interference is transmitted between the conductor and ground (the casing), belonging to an asymmetric interference. In general, the differential mode interference has small amplitude and low frequency, and the influence caused by the low frequency is small; the common mode interference has large amplitude and high frequency, and can generate radiation through the lead, so that the influence is larger.
When the power intelligent equipment in the prior art measures interference, the voltage probe is used for directly measuring the interference of the port to be measured in sequence, however, the electromagnetic interference born by the power intelligent equipment actually enters a circuit from the port and finally acts on the control chip, so that the electromagnetic interference born by the power intelligent equipment cannot be completely reflected by the fact that the interference measurement is carried out only on the port obviously.
Disclosure of Invention
The invention aims to provide a multistage electromagnetic disturbance measurement system, method, equipment and storage medium of electric intelligent equipment, which are used for solving the defect that the electromagnetic disturbance actually suffered by the electric intelligent equipment cannot be completely reflected due to obvious disturbance measurement at a port in the prior art.
First aspect: a multi-stage electromagnetic disturbance measurement system for an electrical smart device, the system comprising: the device comprises at least one port to be tested of an analog circuit, an interference acquisition module, a control chip, a communication circuit and an electric intelligent device;
at least one port to be tested is electrically connected with the analog circuit; the interference acquisition module is electrically connected with the analog circuit and is used for acquiring interference information of the analog circuit;
the interference acquisition module is also electrically connected with the control chip and is used for acquiring interference information on pins of the control chip;
the control chip is electrically connected with the communication circuit and is used for sending the running state information of the control chip to the upper computer.
Further, the analog circuit comprises a functional circuit and an interference suppression circuit;
the input end of the functional circuit is connected with the port to be tested, and the output end of the functional circuit is connected with the input end of the interference suppression circuit; and the output end of the interference suppression circuit is connected with the pin end of the control chip.
Second aspect: a multistage electromagnetic disturbance measurement method of an electric intelligent device comprises the following steps:
acquiring an electric signal of at least one port to be tested of the electric intelligent equipment;
inputting the electric signal of the port to be tested into an analog circuit corresponding to the electric signal according to the type;
and carrying out multistage electromagnetic disturbance acquisition on the electric signals in the analog circuit.
Further, the types of the ports to be tested include at least one of a housing, a power port, a voltage port, a current port, an input port and an output port which are electrically connected.
Further, the method for inputting the electric signal of the port to be tested into the analog circuit corresponding to the electric signal according to the type includes:
inputting the power port signal into a power analog circuit;
inputting the voltage port signal into a voltage analog circuit;
inputting the current port signal into a current analog circuit;
inputting the input port signal into an input analog circuit;
the output port signal is input into an output analog circuit.
Further, the method for carrying out multistage electromagnetic disturbance collection on the electric signals in the analog circuit comprises the following steps:
performing primary common mode interference measurement on the electric signal of the port to be tested;
performing secondary common mode interference measurement on an electric signal at the input end of an interference suppression circuit in the analog circuit;
and performing three-level common mode interference measurement on the electric signals at the pin end of the control chip in the analog circuit.
Further, the method further comprises the steps of after the multi-stage electromagnetic disturbance acquisition of the electric signals in the analog circuit:
transmitting interference information acquired by multistage electromagnetic disturbance to an upper computer;
and the upper computer displays and monitors the received interference information.
Further, the method further comprises the steps of after the multi-stage electromagnetic disturbance acquisition of the electric signals in the analog circuit:
setting upper and lower limit threshold values for interference information of each port to be tested;
and sending out warning and reminding when the acquired interference information exceeds the upper and lower limit threshold ranges.
Third aspect: a multi-stage electromagnetic disturbance measuring device of an electric intelligent device comprises a memory and a processor; at least one program instruction is stored in the memory; the processor is configured to implement the steps of any of the methods described above by loading and executing the at least one program instruction.
Fourth aspect: a readable storage medium having stored thereon a computer program which when executed by a computer performs the steps of any of the methods described above.
Compared with the prior art, the invention has the beneficial effects that: the invention inputs the electric signal of the port to be tested into the corresponding analog circuit according to the type; and electromagnetic interference of the analog circuit is measured by adopting a multi-stage electromagnetic disturbance acquisition mode, so that the electromagnetic interference received by the electric intelligent equipment is accurately reflected, workers can conveniently study the generation mechanism of the electromagnetic interference of the electric intelligent equipment, and an interference suppression method and verification are provided.
Drawings
FIG. 1 is a flow chart provided in this embodiment;
fig. 2 is a circuit diagram of a power supply analog circuit according to the present embodiment;
FIG. 3 is a circuit diagram of a voltage simulation circuit according to the present embodiment;
fig. 4 is a circuit diagram of a current analog circuit according to the present embodiment;
FIG. 5 is a circuit diagram of an input analog circuit according to the present embodiment;
FIG. 6 is a circuit diagram of an output analog circuit according to the present embodiment;
fig. 7 is a partial schematic block diagram of an electronic device according to the present embodiment.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Example 1
The embodiment also provides a multistage electromagnetic disturbance measurement system of the electric power intelligent equipment, which comprises: the device comprises at least one port to be tested of an analog circuit, an interference acquisition module, a control chip, a communication circuit and an electric intelligent device;
at least one port to be tested of the electric power intelligent equipment is electrically connected with the analog circuit;
the interference acquisition module is electrically connected with the analog circuit and is used for acquiring interference information of the analog circuit;
the interference acquisition module is also electrically connected with the control chip and is used for acquiring interference information on pins of the control chip;
the control chip is electrically connected with the communication circuit and is used for sending the running state information of the control chip to the upper computer;
the interference acquisition module is in wireless communication with the upper computer and is used for sending the received interference information to the upper computer.
As shown in fig. 2, the analog circuit includes a functional circuit and an interference suppression circuit;
the input end P1 of the functional circuit is connected with a port to be tested, the output end of the functional circuit is connected with the input end of the interference suppression circuit, and the interference suppression circuit is arranged between J1 and J3 to J2 and J4; the output end of the interference suppression circuit is connected with the pin end of the control chip (not shown in the control chip diagram), and the control chip is connected with TP2 and TP 3; the port to be tested of the analog circuit is a first-level common-mode interference measuring point, the input end of the interference suppression circuit is a second-level common-mode interference measuring point, and the pin end of the control chip connected with the output end of the interference suppression circuit is a third-level common-mode interference measuring point;
the control chip is a singlechip, and the model of the control chip is STM32F103RBT6.
Example 2
Referring to fig. 1, the embodiment provides a multi-stage electromagnetic disturbance measurement method of an electric power intelligent device. Inputting an electric signal of a port to be tested into a corresponding analog circuit according to the type of the electric signal; and electromagnetic interference of the analog circuit is measured by adopting a multi-stage electromagnetic disturbance acquisition mode, so that the electromagnetic interference received by the electric intelligent equipment is accurately reflected, workers can conveniently study the generation mechanism of the electromagnetic interference of the electric intelligent equipment, and an interference suppression method and verification are provided.
Specifically, the multistage electromagnetic disturbance measurement method of the electric intelligent equipment comprises the following steps:
s110: and acquiring an electrical signal of at least one port to be tested of the electric intelligent equipment.
The type of the port to be tested comprises at least one of a shell, a power port, a voltage port, a current port, an input port and an output port which are electrically connected.
S120: and inputting the electric signals of the port to be tested into the corresponding analog circuit according to the types.
Specifically, step S120 includes the steps of:
s121: the power port signal is input into a power analog circuit.
The circuit diagram of the power supply analog circuit is shown in fig. 2.
S122: the voltage port signal is input into a voltage analog circuit.
The circuit diagram of the voltage analog circuit is shown in fig. 3.
S123: the current port signal is input into the current analog circuit.
The circuit diagram of the current analog circuit is shown in fig. 4.
S124: the input port signal is input into the input analog circuit.
The circuit diagram of the input analog circuit is shown in fig. 5.
S125: the output port signal is input into the output analog circuit.
A circuit diagram of the output analog circuit is shown in fig. 6.
In the embodiment, the processing process of each port to be tested in the electric power intelligent equipment is abstracted, so that the electromagnetic disturbance measurement interfaces of each position of the port to be tested are set under the condition that the original electric power intelligent equipment is not disassembled.
S130: and carrying out multistage electromagnetic disturbance acquisition on the electric signals in the analog circuit.
Specifically, step S130 includes the steps of:
s131: performing primary common mode interference measurement on the electric signal of the port to be tested, wherein the input end of the analog circuit is the port to be tested as shown in fig. 2, and performing primary common mode interference measurement on the port to be tested;
s132: the electrical signal at the input of the interference suppression circuit in the analog circuit is subjected to a second-order common-mode interference measurement.
As shown in fig. 2, two-level common-mode interference measurement is performed through J1 and J3, and the common-mode interference measurement adopts a high-voltage carbon rod with a peak voltage of 7-8KV and an analog bandwidth of 100 MHz.
S133: and performing three-level common mode interference measurement on the pin end of the control chip of the corresponding analog circuit.
As shown in fig. 2, three-level common-mode interference measurements were made with J2 and J4, using a 100MHz analog bandwidth peak voltage 600V common probe.
In this embodiment, by performing multi-stage interference measurement on the port to be tested, the current electromagnetic interference condition of the electric power intelligent device can be reflected more accurately.
In this embodiment, after step S130, the method for measuring multistage electromagnetic disturbance of the electric power intelligent device further includes:
s140: and transmitting interference information acquired by the multistage electromagnetic disturbance to an upper computer.
S150: and the upper computer displays and monitors the received interference information.
In the embodiment, electromagnetic interference is monitored in real time through the upper computer, so that a worker can conveniently control the running condition of the intelligent electric power equipment.
In this embodiment, after step S130, the method for measuring multi-level electromagnetic disturbance for an electric power smart device further includes:
s160: setting upper and lower limit threshold values for interference information of each port to be tested;
s170: and sending out warning and reminding when the acquired interference information exceeds the upper and lower limit threshold ranges.
In this embodiment, the configuration of the electric power smart device is any one of a single-phase line, a three-phase four-wire, and a three-phase five-wire.
Example 3
Referring to fig. 7, this embodiment further provides a multi-stage electromagnetic disturbance measurement device of an electric power intelligent device, including: a storage medium 502 and a processor 501; at least one program instruction is stored in the storage medium 502; the processor 501, by loading and executing the at least one program instruction, implements the steps in the method as provided in embodiment 1.
The storage medium 502 and the processor 501 are connected in a bus, which may include any number of interconnected buses and bridges, which connect together various circuits of the one or more processors 501 and the storage medium 502. The bus may also connect various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface between the bus and the transceiver. The transceiver may be one element or may be a plurality of elements, such as a plurality of receivers and transmitters, providing a means for communicating with various other apparatus over a transmission medium. The data processed by the processor 501 is transmitted over a wireless medium via an antenna, which further receives the data and transmits the data to the processor 501.
The processor 501 is responsible for managing the bus and general processing and may also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. And the storage medium 502 may be used for storing data used by the processor 501 in performing operations.
Example 4
The present embodiment provides a readable storage medium having stored thereon a computer program which, when executed by a computer, performs steps in a method as provided in embodiment 1.
In the embodiment, the electrical signal of the port to be tested is input into the corresponding analog circuit according to the type; and electromagnetic interference of the analog circuit is measured by adopting a multi-stage electromagnetic disturbance acquisition mode, so that the electromagnetic interference received by the electric intelligent equipment is accurately reflected, and the electric intelligent equipment is convenient for workers to carry out daily maintenance and overhaul.
In summary, the invention provides a method and a system for measuring multistage electromagnetic disturbance for an electric power intelligent device, wherein the method for measuring multistage electromagnetic disturbance for the electric power intelligent device is characterized in that an electric signal of a port to be measured is input into a corresponding analog circuit according to the type; and electromagnetic interference of the analog circuit is measured by adopting a multi-stage electromagnetic disturbance acquisition mode, so that the electromagnetic interference received by the electric intelligent equipment is accurately reflected, workers can conveniently study the generation mechanism of the electromagnetic interference of the electric intelligent equipment, and an interference suppression method and verification are provided.
It will be appreciated by those skilled in the art that 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 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 flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (7)
1. The multistage electromagnetic disturbance measurement method for the electric intelligent equipment is characterized by comprising the following steps of:
acquiring an electric signal of at least one port to be tested of the electric intelligent equipment;
inputting the electric signal of the port to be tested into an analog circuit corresponding to the electric signal according to the type;
carrying out multistage electromagnetic disturbance acquisition on the electric signals in the analog circuit;
the method for inputting the electric signal of the port to be tested into the analog circuit corresponding to the electric signal according to the type comprises the following steps:
inputting a power port signal into a power analog circuit;
inputting a voltage port signal into a voltage analog circuit;
inputting a current port signal into a current analog circuit;
inputting an input port signal into an input analog circuit;
inputting the output port signal into an output analog circuit;
the method for carrying out multistage electromagnetic disturbance acquisition on the electric signals in the analog circuit comprises the following steps:
performing primary common mode interference measurement on the electric signal of the port to be tested;
performing secondary common mode interference measurement on an electric signal at the input end of an interference suppression circuit in the analog circuit;
and performing three-level common mode interference measurement on the electric signals at the pin end of the control chip in the analog circuit.
2. The method for measuring the multistage electromagnetic disturbance of the power intelligent equipment according to claim 1, wherein the type of the port to be measured comprises at least one of a power port, a voltage port, a current port, an input port and an output port.
3. A method of multistage electromagnetic disturbance measurement of an electrical smart device according to claim 1, further comprising, after multistage electromagnetic disturbance acquisition of the electrical signal in the analog circuit:
transmitting interference information acquired by multistage electromagnetic disturbance to an upper computer;
and the upper computer displays and monitors the received interference information.
4. A method of multistage electromagnetic disturbance measurement of an electrical smart device according to claim 1, further comprising, after multistage electromagnetic disturbance acquisition of the electrical signal in the analog circuit:
setting upper and lower limit threshold values for interference information of each port to be tested;
and sending out warning and reminding when the acquired interference information exceeds the upper and lower limit threshold ranges.
5. A multi-stage electromagnetic disturbance measurement system for an electrical smart device, the system comprising: at least one port to be tested of the electric power intelligent equipment, an analog circuit, an interference acquisition module, a control chip and a communication circuit;
at least one port to be tested is electrically connected with the analog circuit;
the interference acquisition module is electrically connected with the analog circuit and is used for acquiring interference information of the analog circuit;
the interference acquisition module is also electrically connected with the control chip and is used for acquiring interference information on pins of the control chip;
the control chip is electrically connected with the communication circuit and is used for sending the running state information of the control chip to the upper computer;
the analog circuit comprises a functional circuit and an interference suppression circuit;
the input end of the functional circuit is connected with the port to be tested, and the output end of the functional circuit is connected with the input end of the interference suppression circuit; the output end of the interference suppression circuit is connected with the pin end of the control chip;
the multi-stage electromagnetic disturbance acquisition of the electric signals in the analog circuit comprises the following steps:
performing primary common mode interference measurement on the electric signal of the port to be tested;
performing secondary common mode interference measurement on an electric signal at the input end of an interference suppression circuit in the analog circuit;
and performing three-level common mode interference measurement on the electric signals at the pin end of the control chip in the analog circuit.
6. The multistage electromagnetic disturbance measuring device of the electric intelligent device is characterized by comprising a memory and a processor; at least one program instruction is stored in the memory; the processor is configured to implement the steps of the method according to any one of claims 1-4 by loading and executing the at least one program instruction.
7. A readable storage medium, characterized in that it has stored thereon a computer program which, when executed by a computer, performs the steps of the method according to any of claims 1-4.
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