CN108414860B - Performance detection method and device of high-frequency cable and readable storage medium - Google Patents
Performance detection method and device of high-frequency cable and readable storage medium Download PDFInfo
- Publication number
- CN108414860B CN108414860B CN201810183819.4A CN201810183819A CN108414860B CN 108414860 B CN108414860 B CN 108414860B CN 201810183819 A CN201810183819 A CN 201810183819A CN 108414860 B CN108414860 B CN 108414860B
- Authority
- CN
- China
- Prior art keywords
- detection
- detected
- frequency cable
- performance
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Abstract
The invention discloses a performance detection method of a high-frequency cable, which comprises the following steps: determining a position to be detected of a target high-frequency cable; detecting the position to be detected, and comparing the obtained detection value with a preset detection standard value to obtain a comparison result; and determining whether the performance of the target high-frequency cable is qualified or not based on the comparison result. The invention also discloses a performance detection device of the high-frequency cable and a computer readable storage medium. According to the invention, when the EMC performance of the high-frequency cable is detected, the performance of the high-frequency cable is detected in a near-field online detection mode, the high-frequency cable can be detected rapidly in batch, and the batch detection of the high-frequency cable on the EMC performance in a production line is realized.
Description
Technical Field
The present invention relates to the field of data transmission technologies, and in particular, to a performance detection method for a high-frequency cable, a performance detection apparatus for a high-frequency cable, and a computer-readable storage medium.
Background
Emc (electro Magnetic compatibility), i.e., electromagnetic compatibility, refers to the ability of a device or system to perform satisfactorily in its electromagnetic environment without generating intolerable electromagnetic interference to any device in its environment. EMC performance of high frequency signal cables has become a key factor determining the EMC performance of products in many electronic devices, and thus detection of the EMC performance of high frequency cables is necessary.
In the prior art, a common method for detecting a high-frequency signal cable is performed in a laboratory, such as a "radiation disturbance" test item (a radiation disturbance test is one of EMC test items), and a test is required in an anechoic chamber. The method of testing in the anechoic chamber tests the whole system, and has the disadvantages of long testing time, limited field and high price of testing equipment. Meanwhile, when detection is performed, repeated sampling detection is usually performed, all high-frequency cables are not detected, and meanwhile, the detection method is not suitable for EMC daily quality management of ordinary quality management personnel on the high-frequency cables.
Disclosure of Invention
The invention mainly aims to provide a performance detection method of a high-frequency cable, a performance detection device of the high-frequency cable and a computer readable storage medium, and aims to solve the technical problem of how to quickly and simply carry out batch detection on EMC performance of the high-frequency cable in a production line.
In order to achieve the above object, the present invention provides a performance monitoring method for a high frequency cable, including the following steps:
determining a position to be detected of a target high-frequency cable;
performing electromagnetic compatibility detection on the position to be detected, and comparing the obtained detection value with a preset detection standard value to obtain a comparison result;
and determining whether the electromagnetic compatibility of the target high-frequency cable is qualified or not based on the comparison result.
Optionally, the step of determining the to-be-detected position of the target high-frequency cable further includes:
receiving and storing the input parameter information of the target high-frequency cable, wherein the parameter information at least comprises a preset detection standard value and the number of positions to be detected.
Optionally, the step of determining the to-be-detected position of the target high-frequency cable includes:
and detecting the signal value of each position on the target high-frequency cable, and acquiring a maximum value point of the signal value in a detection period so as to set the position corresponding to the maximum value point as a position to be detected.
Optionally, the step of performing electromagnetic compatibility detection on the position to be detected, and comparing the obtained detection value with a preset detection standard value to obtain a comparison result includes:
performing electromagnetic compatibility detection on each position to be detected to obtain a corresponding detection value;
and acquiring a preset detection standard value group, and judging the magnitude between each detection value and the corresponding detection standard value to obtain a comparison result corresponding to each position to be detected.
Optionally, the step of determining whether the electromagnetic compatibility of the target high-frequency cable is qualified based on the comparison result includes:
determining the detection result of each position to be detected based on the comparison result corresponding to each position to be detected;
and determining whether the electromagnetic compatibility of the target high-frequency cable is qualified or not based on the detection result corresponding to each position to be detected.
Optionally, the step of determining the detection result of each position to be detected based on the comparison result corresponding to each position to be detected includes:
when the detection value is smaller than or equal to the standard value, determining that the detection result of the position to be detected corresponding to the detection value is qualified;
and when the detection value is larger than the standard value, determining that the detection result of the position to be detected corresponding to the detection value is unqualified.
Optionally, the step of determining whether the electromagnetic compatibility of the target high-frequency cable is qualified or not based on the detection result corresponding to each detection position includes:
when the detection results of the positions to be detected are qualified, determining the electromagnetic compatibility of the target cable as qualified;
and when the positions to be detected with unqualified detection results exist in the positions to be detected, determining that the electromagnetic compatibility of the target cable is unqualified.
Optionally, the step of determining whether the electromagnetic compatibility of the target high-frequency cable is qualified based on the comparison result further includes:
and sending corresponding prompt information based on the electromagnetic compatibility of the target high-frequency cable, and storing the detection result of the electromagnetic compatibility of the target high-frequency cable.
In order to achieve the above object, the present invention also provides a performance detection device for a high-frequency cable, including: the performance detection program is stored on the memory and can run on the processor, and when being executed by the processor, the performance detection program realizes the steps of the performance detection method of the high-frequency cable.
Further, to achieve the above object, the present invention also provides a computer-readable storage medium having stored thereon a performance detection program, which when executed by a processor, implements the steps of the performance detection method of the high-frequency cable as described above.
When the performance of the target high-frequency cable is detected, firstly, a position to be detected on the target high-frequency cable is determined, then, corresponding detection is carried out on the position to be detected, then, a detection value obtained by the detection is compared with a preset standard value, and finally, whether the performance of the target high-frequency cable is qualified or not is determined based on an obtained comparison result. The detection standard value corresponding to the target high-frequency cable is stored in advance, after detection is carried out, the detection value is compared with the standard value, whether the performance of the target high-frequency cable is qualified or not is finally determined according to the size relation between the detection value and the standard value, the high-frequency cables in the same batch can be detected in the same mode, when the EMC performance of the high-frequency cables is detected on line, detection is carried out in a near-field detection mode, and the EMC performance of the high-frequency cables can be detected on line in batches quickly.
Drawings
FIG. 1 is a schematic diagram of an apparatus in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a performance testing method for a high-frequency cable according to an embodiment of the invention;
fig. 3 is a schematic distribution diagram of positions to be detected according to an embodiment of the performance detection method for a high-frequency cable of the present invention;
FIG. 4 is a detailed flowchart of step S20 in FIG. 2;
FIG. 5 is a detailed flowchart of step S30 in FIG. 2;
FIG. 6 is a schematic view of a high-frequency cable performance testing method according to a preferred embodiment of the present invention;
fig. 7 is a schematic view of another preferred embodiment of the performance detection method for a high-frequency cable according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, fig. 1 is a schematic device structure diagram of a hardware operating environment according to an embodiment of the present invention.
The device of the embodiment of the invention can be a PC, and can also be a device equipment with a display control function, such as a tablet computer, a portable computer and the like.
As shown in fig. 1, the apparatus may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration of the device shown in fig. 1 is not intended to be limiting of the device and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and a performance detection program.
In the apparatus shown in fig. 1, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to invoke the performance detection program stored in the memory 1005 and perform the following operations:
determining a position to be detected of a target high-frequency cable;
performing electromagnetic compatibility detection on the position to be detected, and comparing the obtained detection value with a preset detection standard value to obtain a comparison result;
and determining whether the electromagnetic compatibility of the target high-frequency cable is qualified or not based on the comparison result.
Further, the processor 1001 may call the performance detection program stored in the memory 1005, and also perform the following operations:
receiving and storing the input parameter information of the target high-frequency cable, wherein the parameter information at least comprises a preset detection standard value and the number of positions to be detected.
Further, the processor 1001 may call the performance detection program stored in the memory 1005, and also perform the following operations:
and detecting the signal value of each position on the target high-frequency cable, and acquiring a maximum value point of the signal value in a detection period so as to set the position corresponding to the maximum value point as a position to be detected.
Further, the processor 1001 may call the performance detection program stored in the memory 1005, and also perform the following operations:
performing electromagnetic compatibility detection on each position to be detected to obtain a corresponding detection value;
and acquiring a preset detection standard value group, and judging the magnitude between each detection value and the corresponding detection standard value to obtain a comparison result corresponding to each position to be detected.
Further, the processor 1001 may call the performance detection program stored in the memory 1005, and also perform the following operations:
determining the detection result of each position to be detected based on the comparison result corresponding to each position to be detected;
and determining whether the electromagnetic compatibility of the target high-frequency cable is qualified or not based on the detection result corresponding to each position to be detected.
Further, the processor 1001 may call the performance detection program stored in the memory 1005, and also perform the following operations:
when the detection value is smaller than or equal to the standard value, determining that the detection result of the position to be detected corresponding to the detection value is qualified;
and when the detection value is larger than the standard value, determining that the detection result of the position to be detected corresponding to the detection value is unqualified.
Further, the processor 1001 may call the performance detection program stored in the memory 1005, and also perform the following operations:
when the detection results of the positions to be detected are qualified, determining the electromagnetic compatibility of the target cable as qualified;
and when the positions to be detected with unqualified detection results exist in the positions to be detected, determining that the electromagnetic compatibility of the target cable is unqualified.
Further, the processor 1001 may call the performance detection program stored in the memory 1005, and also perform the following operations:
and sending corresponding prompt information based on the electromagnetic compatibility of the target high-frequency cable, and storing the detection result of the electromagnetic compatibility of the target high-frequency cable.
Referring to fig. 2, fig. 2 is a schematic flow chart of an embodiment of a performance detection method for a high-frequency cable according to the present invention, where the performance detection method for the high-frequency cable includes:
and step S10, determining the to-be-detected position of the target high-frequency cable.
Emc (electro Magnetic compatibility), i.e., electromagnetic compatibility, refers to the ability of a device or system to perform satisfactorily in its electromagnetic environment without generating intolerable electromagnetic interference to any device in its environment. Specifically, EMC includes two aspects of requirements: on one hand, the electromagnetic interference generated to the environment by the equipment in the normal operation process cannot exceed a certain limit value; another aspect is that the appliance has a degree of immunity to electromagnetic interference present in the environment, i.e., electromagnetic susceptibility. The international electrotechnical commission standard IEC defines electromagnetic compatibility as follows: the system or the equipment can work normally in the electromagnetic environment, and meanwhile, the interference to other systems and equipment is avoided.
Obviously, when the system cannot work normally by itself or other systems and equipment are affected during working, the EMC performance of the system or the equipment is not in accordance with the use standard. To avoid this, the system or device needs to be tested before it is used to determine whether it meets the conditions for use. In the present embodiment, the high-frequency cable also needs to ensure normal and stable operation of the high-speed digital signal transmission between the devices, and further needs to detect performance of the high-frequency cable. The high-frequency cable mentioned in this embodiment may be an HDMI cable, and may also be various high-frequency cables such as a USB cable, an LVDS cable, a DVI cable, a DisplayPort cable, a coaxial cable, and the like.
In this embodiment, during detection, the position to be detected on the target high-frequency cable needs to be determined first, and then corresponding detection is performed. Specifically, it is obvious that the high-frequency cable exhibits good EMC performance only when a load device is connected and high-speed digital signal transmission is performed, and therefore, when a target high-frequency cable is detected, it is first necessary to perform high-speed digital signal transmission using the target high-frequency cable. When the target high-frequency cable is detected, corresponding detection can be carried out only by the position to be detected on the target cable. It should be noted that, for one high-frequency cable, there may be one or more corresponding positions to be detected, which is determined according to the actual application requirement.
And step S20, performing electromagnetic compatibility detection on the position to be detected, and comparing the obtained detection value with a preset standard value to obtain a comparison result.
In this embodiment, after the position to be detected on the target high-frequency cable is determined, the position to be detected is correspondingly detected to obtain a detection value corresponding to the position to be detected, and finally, the obtained detection value is compared with a preset standard value to obtain a comparison result. Specifically, when the position to be detected on the target high-frequency cable is determined, the detection probe of the detection device is controlled to be fixed at the position to be detected, and then detection is performed so as to obtain a detection value. The detection device is characterized in that a detection standard value is prestored, when a corresponding detection value is obtained through detection, the detection value is compared with a preset standard value, specifically, the size is compared, so that the size relation between the detection value obtained through detection and the standard value is determined, and whether the performance of the target high-frequency cable is qualified or not is determined according to the obtained size relation between the detection value and the standard value.
It should be noted that, in the actual detection process, because the number of the positions to be detected is not limited, specifically, according to the actual application requirements, when the detection is performed, referring to fig. 3, the signal output device is connected to the load device, and the detection probe provided on the detection device is movably connected (movably connected) to the high-frequency cable connected to the signal output device and the load device, the specific position of the position to be detected on the high-frequency cable can be determined by corresponding movement, when the position to be detected is determined, the detection probe fixedly connected to the high-frequency cable on the detection device is controlled to perform movement detection to determine the specific position of the position to be detected, meanwhile, when there are a plurality of positions to be detected, the detection probe of the detection device is usually controlled to move on the target high-frequency cable, when the detection is completed at the first position to be detected, and controlling a detection probe of the detection equipment to move to the next position to be detected for detection, and repeating the steps until all the positions to be detected are detected.
And step S30, determining whether the electromagnetic compatibility of the target high-frequency cable is qualified or not based on the comparison result.
In this embodiment, when a detection value of a position to be detected is obtained through detection and compared to obtain a corresponding comparison result, the performance of the target high-frequency cable is determined according to the obtained comparison result, wherein the performance is mainly divided into qualified performance and unqualified performance. Specifically, during comparison, the detected value is compared with a preset standard value, only one position to be detected on the target cable is taken as an example, and when the detected value is smaller than or equal to the standard value, the performance of the target high-frequency cable is determined to be qualified; and when the detection value is larger than the standard value, determining that the performance of the target high-frequency cable is unqualified.
It should be noted that, in this embodiment, whether the performance of the high-frequency cable is qualified or not is determined according to an absolute magnitude relationship, but in an actual production and detection process, due to the existence of an error, if the current detection value is larger than the standard value, but the difference between the two is small, and is approximately within the error range, the cable may also be a qualified cable, and similarly, if the current detection value is smaller than the standard value, but the difference between the two is small, the corresponding cable may also be a unqualified cable at this time. However, in the actual production and detection process, since it cannot be absolutely ensured that there is no influence of external factors, in the actual detection process, the occurrence of errors is inevitable, and in this embodiment, an absolute size determination mode is optionally adopted to determine whether the performance of the high-frequency cable is qualified.
Further, after the step of determining the performance of the target high-frequency cable, the method may further include:
step a, sending out corresponding prompt information based on the electromagnetic compatibility of the target high-frequency cable, and storing the detection result of the electromagnetic compatibility of the target high-frequency cable.
Specifically, when the detection is performed, it is necessary to ensure that all data information such as the length, the parameter specification, and the like of the high-frequency cables in the same batch are consistent, that is, the high-frequency cables produced in the same manner have the consistent length. In this embodiment, when the performance of the target high-frequency cable is determined, corresponding feedback prompt information may be sent according to the detection judgment, and the performance detection result of the target high-frequency cable may be stored, where the performance detection result at least includes a detection value of each position to be detected, a comparison result of the detection values of each position to be detected, whether the performance of the target high-frequency cable is qualified, and the like. Specifically, when the performance of the target high-frequency cable is unqualified during feedback, corresponding prompt information or prompt sound representing the unqualified cable can be sent out, and the detection result can be displayed on a display interface of a detection end (detection equipment).
In this embodiment, when the performance of the target high-frequency cable is detected, a position to be detected on the target high-frequency cable is determined first, then corresponding detection is performed on the position to be detected, a detection value obtained by the detection is compared with a preset standard value, and finally whether the performance of the target high-frequency cable is qualified is determined based on an obtained comparison result. The detection standard value corresponding to the target high-frequency cable is stored in advance, after detection is carried out, the detection value is compared with the standard value, whether the performance of the target high-frequency cable is qualified or not is finally determined according to the size relation between the detection value and the standard value, the high-frequency cables in the same batch can be detected in the same mode, when the EMC performance of the high-frequency cables is detected on line, detection is carried out in a near-field detection mode, and the EMC performance of the high-frequency cables can be detected on line in batches quickly.
Further, in step S10, determining the to-be-detected position of the target high-frequency cable, which includes:
and b, receiving and storing the input parameter information of the target high-frequency cable, wherein the parameter information at least comprises a preset standard value and the number of positions to be detected.
During detection, the number of the positions to be detected on the target high-frequency cable and the detection standard value need to be determined before detection due to the need of determining the positions to be detected on the target high-frequency cable and the reference value (standard value) during comparison, so that the detection can be accurately and quickly performed.
In this embodiment, before the detection, the parameter information corresponding to the input target high-frequency cable is received and stored, where the parameter information at least includes a preset detection standard value and the number of positions to be detected. Specifically, before detection, corresponding detection standard values of the high-frequency cables of the same batch are consistent within a certain error tolerance range, and in order to make the detection standard values more accurate, a plurality of high-frequency cables are generally selected at random, and a conventional far-field test (anechoic chamber test) method is used for testing to determine the corresponding detection standard values. The number of the positions to be detected on the high-frequency cable is determined during standard determination, and the required number of the positions to be detected is determined mainly according to actual requirements.
It should be noted that only the number of the positions to be detected can be determined by the remote testing method, but the specific positions of the positions to be detected on the high-frequency cable cannot be determined, and a tester needs to search for the positions to be detected by himself during the testing. Likewise, "step b" in this embodiment has no relation to "step a" in the previous embodiments, and is used merely to name the different steps.
Further, after receiving and saving the input relevant parameter information of the target high-frequency cable, step S10 includes in detail:
and detecting the signal value of each position on the target high-frequency cable, and acquiring a maximum value point of the signal value in a detection period so as to set the position corresponding to the maximum value point as a position to be detected.
In the actual detection process, when the detection positions are different, the obtained detection results have great difference and difference, and for the convenience of detection and comparison and judgment, in this embodiment, there are different determination methods for determining the position to be detected, and in the specific test process, the position to be detected can be determined by the spectrum analyzer, wherein the determination of the specific position is by using a peak detection method, mainly because, when displaying on the spectrum analyzer, the position of the peak/trough of the waveform, that is, the position of the extreme point, can be accurately and quickly determined, and for other positions except the peak/trough, although the corresponding signal value can be well obtained, there is great trouble in the actual position determination, and further in this embodiment, the maximum position is preferably used as the position to be detected, the minimum position can also be used as the position to be detected.
In this embodiment, when determining a position to be detected of a target high-frequency cable, by detecting signal values of various positions on the target high-frequency cable, and then selecting a position with the highest signal value as the position to be detected, where the position to be detected is not a position on a real position, specifically, a signal highest point, and in an actual transmission process, more than one position with the highest signal value is only required to be selected as the position to be detected, specifically referring to fig. 4, as shown in fig. 4, when a high-speed digital signal is transmitted through a high-frequency cable with a certain length, the highest signal values of a certain transmission waveform exist in a plurality of numbers, for example, the positions with the highest signal values are four positions a1, a2, A3, and a4, that is, these four positions can all be used as the position to be detected, and since detection results of various positions are substantially similar, only one of the positions needs to be selected as the position to be detected, meanwhile, when the position to be detected is determined, determining a detection standard value of the position to be detected, specifically, the detection standard value may be an electrical signal value at a 'peak' position, wherein the electrical signal value may be a voltage signal value or a current signal value, specifically, according to a characteristic property of the load device, wherein when the load device needs to output a voltage signal, the set detection standard value will be a voltage signal value; when the load device needs to output a current signal, the set detection standard value will be a current signal value.
In addition, when there are a plurality of positions to be detected, it is generally referred that the plurality of detections by the spectrum analyzer are different types of detected waveforms. As shown in fig. 5, when there are two positions to be detected, the corresponding positions to be detected are B1, B2, B3, B4, C1, C2, C3, C4, C5, C6, C7, C8, respectively, where B1, B2, B3, and B4 belong to the positions to be detected of the first type of waveform, and C1, C2, C3, C4, C5, C6, C7, and C8 are the positions to be detected of the second type of waveform, and in general, the positions of "peaks" of different types of harmonics are not the same, and the corresponding positions on the high-frequency cable are also different. It should be noted that, in the actual detection process, only the position corresponding to one of the "peak" points on the high-frequency cable needs to be selected as the band detection position, and it is not necessary to detect all the "peak" positions on the same type of harmonic.
Further, referring to fig. 6, fig. 6 is a detailed flowchart of step S20 in fig. 2.
Step S201, performing electromagnetic compatibility detection on each position to be detected to obtain a corresponding detection value;
step S202, a preset detection standard value group is obtained, and the magnitude between each detection value and the corresponding detection standard value is judged, so as to obtain a comparison result corresponding to each position to be detected.
In this embodiment, when the position to be detected on the target high-frequency cable is determined, the position to be detected may be detected, and then the detected value is compared with the corresponding detection standard value in the preset detection standard value set to determine the size relationship between the two values. Specifically, during detection, by detecting an electrical signal value (a voltage signal value or a current signal value) of a position to be detected, and then comparing the detected electrical signal value with a corresponding standard electrical signal value (a detection standard value), wherein taking the detected electrical signal value as the voltage signal value as an example, if the current detected voltage value is V1, the standard voltage value (the detection standard value) is V0, during the comparison process, only two relations exist between V1 and V0, one relation is that V1 is less than or equal to V0, at this moment, the detection result of the position to be detected is qualified, and the other relation is that V1 is greater than V0, at this moment, the detection result of the position to be detected is not qualified.
In the actual detection process, the number of the positions to be detected can be multiple, so that when determining whether the EMC performance of the target high-frequency cable is qualified, the EMC performance of the high-frequency cable needs to be comprehensively determined according to the detection results of all the positions to be detected, and specifically, when determining that the EMC performance of the high-frequency cable is qualified, the EMC performance of the high-frequency cable needs to be determined.
Further, referring to fig. 7, fig. 7 is a detailed flowchart of step S30 in fig. 2.
Step S301, determining the detection result of each position to be detected based on the comparison result corresponding to each position to be detected.
Step S302, determining whether the electromagnetic compatibility of the target high-frequency cable is qualified or not based on the detection result corresponding to each position to be detected.
In this embodiment, the detection values of the positions to be detected are obtained through detection, the comparison result between the detection value corresponding to each position to be detected and the corresponding standard detection value is determined through comparison, and then whether the EMC performance of the target high-frequency cable is qualified or not is determined according to the detection result corresponding to each position to be detected. Specifically, when the performance of the high-frequency cable is detected, it is required to ensure that all signals can be normally transmitted, and when the detection result of each position to be detected is determined, the obtained detection results are also different due to different types of detected harmonics, that is, the detection result of some positions to be detected is qualified, and the detection result of some positions to be detected is unqualified, but when the actual performance is determined, it is required that all the detection results of the positions to be detected are qualified.
Specifically, when determining whether the detection result of each position to be detected is qualified, comparing the detected electrical signal value with a corresponding standard electrical signal value (detection standard value), when the detected electrical signal value corresponding to the position to be detected is smaller than or equal to the standard electrical signal value, determining that the detection result of the position to be detected is qualified, and when the detected electrical signal value corresponding to the position to be detected is larger than the standard electrical signal value, determining that the detection result of the position to be detected is unqualified. Obviously, in the detection, it is only necessary to compare the monitored detection value with the detection standard value and determine the detection value according to the magnitude relationship between the detection value and the detection standard value, but for the performance detection of the target high-frequency cable, the determination needs to be performed according to the detection results of all positions to be detected, specifically, the determination method is as follows: when the detection results of all the positions to be detected are qualified, the EMC performance of the target cable is qualified; and when the positions to be detected with unqualified detection results exist in all the positions to be detected, the EMC performance of the target cable is unqualified. That is, only when the detection results of all the positions to be detected are qualified, the performance of the high-frequency cable is qualified.
It should be noted that, in this embodiment, only the performance determination of the high-frequency cable is determined to be qualified, but in the actual use process of the high-frequency cable, the suitable devices of the high-frequency cable with different performances (the performance referred to herein not only means whether the high-frequency cable is qualified, but also performs a grade division on the qualified high-frequency cable and the unqualified high-frequency cable) are different, so that when performing the detection, in addition to determining whether the performance of the high-frequency cable is qualified, the high-frequency cable may be graded, that is, the performance of the high-frequency cable may be graded to be not qualified, that is, the performance of the high-frequency cable may be graded to be low, and the following description is given by taking only one position to be detected as an example, wherein the detected value is represented by V1, and the detected standard value is represented by V0, and specifically:
TABLE 1
| V1-V0 | (-∞)～-5 | -5～-2 | -2～0 | 0 | 0～2 | 2～(+∞) |
| Grade | T3 | T2 | T1 | T0 | T4 | T5 |
When the position to be detected is detected to obtain a detection value, the detection value is compared with the detection standard value, in this embodiment, the difference between the detection value and the detection standard value is optionally calculated to obtain a calculation result, as shown in table 1, for different calculation results, there are different level information, specifically, the level information includes: the method has the advantages that the T3 is excellent, the T2 is good, the T1 is qualified, the T0 is medium, the T4 is unqualified and the T5 is abnormal, and because certain errors exist in the production and performance detection processes of the high-frequency cable, when the detection value of the position to be detected is around the standard detection value, the performance of the high-frequency cable cannot be accurately determined, and when the detection value is far smaller than or larger than the detection standard value, the influence is small even if the errors exist. By carrying out grading on the detected high-frequency cables, besides determining whether the high-frequency cables are qualified or not, different grading is also carried out on the qualified high-frequency cables and the unqualified high-frequency cables respectively, so that subsequent use can be more convenient, and only the detection result needs to be specified in the detection process.
It should be noted that, in the ranking of the high-frequency cable, the criteria for the ranking are set according to specific error tolerance, and the manner of ranking in table 1 is only for illustration and is not a specific limitation to the ranking. Similarly, the grade can be divided according to the specific use mode and the requirement of the high-frequency cable.
Further, in an implementation process of a preferred embodiment of the present invention, in an actual performance detection process of the high-frequency cable, the signal output device and the load device establish a signal transmission connection through the high-frequency cable, and the detection device detects the performance of the high-frequency cable through the arranged detection probe.
Specifically, referring to fig. 3, the detection probe is movably placed on the high-frequency cable, and the specific position of the position to be detected is determined by controlling the movement of the monitoring probe. It can be known from the foregoing embodiments that, on a high-frequency cable, there may be a plurality of types of positions to be detected according to the types of transmission waveforms to be detected, and when the performance of the high-frequency cable is determined based on the detection result of only one transmission waveform, only one position to be detected needs to be determined, because in this embodiment, a "peak detection method" (that is, the strength of an electrical signal at a peak is detected — the magnitude of a voltage signal or a current signal) is preferably adopted to determine the performance of the detected high-frequency cable, so that, although there is only one type of positions to be detected on one high-frequency cable, there are a plurality of actual positions to be detected, specifically, as shown in fig. 4, there are 4 "peak" positions of a waveform, which are a1, a2, A3 and a4 respectively, but belong to the same type, that is, when the performance detection determination is performed at these 4 positions, within a certain error tolerance range, the detection results are the same. At the moment, the detection probe moves on the high-frequency cable, and the corresponding position to be detected can be found by searching the position with the highest or lowest signal intensity.
Similarly, when the performance of the detected high-frequency cable needs to be determined according to the detection results of multiple types of transmission waveforms, it is assumed that two different types of transmission waveforms need to be used for detection to determine, and the position distribution of the positions to be detected on the detected high-frequency cable is as shown in fig. 5, specifically, the positions to be detected are divided into two types, where the positions to be detected are B1, B2, B3, and B4, and the positions to be detected are C1, C2, C3, C4, C5, C6, C7, and C8, when the detection is performed based on the first type of transmission waveforms, the detection can be completed as the positions to be detected when the detection probe moves to any one of B1, B2, B3, and B4 by moving the position of the detection probe when the detection is performed based on the second type of transmission waveforms, when the probe moves to any one position of C1, C2, C3, C4, C5, C6, C7 and C8, the probe can be used as a position to be detected to finish detection. When the best performance is determined, the determination is made based on the two types of detection results.
It should be noted that when there is a need to determine whether the performance of the high-frequency cable is good or bad based on a plurality of different transmission waveforms, the detection is completed by moving the detection probe a plurality of times. Further, the movement of the detection probe may be controlled manually by a mechanical device, or may be controlled by a control program, and the movement of the position of the detection probe is completed, and the control method is not limited specifically.
The invention also provides a performance detection device of the high-frequency cable.
The performance detection device of the high-frequency cable provided by the invention comprises: the performance detection method comprises a memory, a processor and a performance detection program which is stored on the memory and can run on the processor, wherein the performance detection program realizes the steps of the performance detection method of the high-frequency cable when being executed by the processor.
The method implemented when the performance detection program running on the processor is executed may refer to each embodiment of the performance detection method for a high-frequency cable of the present invention, and is not described herein again.
In addition, the embodiment of the invention also provides a computer readable storage medium.
The computer-readable storage medium of the present invention stores a performance detection program, which when executed by a processor implements the steps of the performance detection method for a high-frequency cable as described above.
The method implemented when the performance detection program running on the processor is executed may refer to each embodiment of the performance detection method for a high-frequency cable of the present invention, and is not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or applied directly or indirectly to other related arts, are included in the present invention.
Claims (9)
1. A performance detection method of a high-frequency cable is characterized by comprising the following steps:
determining a position to be detected of a target high-frequency cable;
performing electromagnetic compatibility detection on the position to be detected, and comparing the obtained detection value with a preset detection standard value to obtain a comparison result;
determining whether the electromagnetic compatibility of the target high-frequency cable is qualified or not based on the comparison result;
the step of determining the position to be detected of the target high-frequency cable comprises the following steps:
and detecting the signal value of each position on the target high-frequency cable, and acquiring a maximum value point of the signal value in a detection period so as to set the position corresponding to the maximum value point as a position to be detected.
2. The method for detecting the performance of the high-frequency cable according to claim 1, wherein the step of determining the position to be detected of the target high-frequency cable is preceded by the steps of:
receiving and storing the input parameter information of the target high-frequency cable, wherein the parameter information at least comprises a preset detection standard value and the number of positions to be detected.
3. The method for detecting the performance of the high-frequency cable according to claim 2, wherein the step of performing the electromagnetic compatibility detection on the position to be detected and comparing the obtained detection value with a preset detection standard value to obtain a comparison result comprises:
performing electromagnetic compatibility detection on each position to be detected to obtain a corresponding detection value;
and acquiring a preset detection standard value group, and judging the magnitude between each detection value and the corresponding detection standard value to obtain a comparison result corresponding to each position to be detected.
4. The method for detecting the performance of a high-frequency cable according to claim 3, wherein the step of determining whether the electromagnetic compatibility of the target high-frequency cable is qualified based on the comparison result includes:
determining the detection result of each position to be detected based on the comparison result corresponding to each position to be detected;
and determining whether the electromagnetic compatibility of the target high-frequency cable is qualified or not based on the detection result corresponding to each position to be detected.
5. The method for detecting the performance of the high-frequency cable according to claim 4, wherein the step of determining the detection result of each position to be detected based on the comparison result corresponding to each position to be detected comprises:
when the detection value is smaller than or equal to the standard value, determining that the detection result of the position to be detected corresponding to the detection value is qualified;
and when the detection value is larger than the standard value, determining that the detection result of the position to be detected corresponding to the detection value is unqualified.
6. The method for detecting the performance of the high-frequency cable according to claim 5, wherein the step of determining whether the electromagnetic compatibility of the target high-frequency cable is qualified based on the detection result corresponding to each detection position comprises:
when the detection results of the positions to be detected are qualified, determining the electromagnetic compatibility of the target cable as qualified;
and when the positions to be detected with unqualified detection results exist in the positions to be detected, determining that the electromagnetic compatibility of the target cable is unqualified.
7. The method for detecting the performance of a high-frequency cable according to claim 1, wherein the step of determining whether the electromagnetic compatibility of the target high-frequency cable is qualified based on the comparison result further includes:
and sending corresponding prompt information based on the electromagnetic compatibility of the target high-frequency cable, and storing the detection result of the electromagnetic compatibility of the target high-frequency cable.
8. A performance detection apparatus of a high-frequency cable, characterized by comprising: memory, a processor and a performance detection program stored on the memory and executable on the processor, the performance detection program, when executed by the processor, implementing the steps of the performance detection method of a high frequency cable according to any one of claims 1 to 7.
9. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a performance detection program which, when executed by a processor, implements the steps of the performance detection method of a high-frequency cable according to any one of claims 1 to 7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810183819.4A CN108414860B (en) | 2018-03-06 | 2018-03-06 | Performance detection method and device of high-frequency cable and readable storage medium |
| PCT/CN2019/071881 WO2019169957A1 (en) | 2018-03-06 | 2019-01-16 | Method and device for detecting performance of high-frequency cables, and readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810183819.4A CN108414860B (en) | 2018-03-06 | 2018-03-06 | Performance detection method and device of high-frequency cable and readable storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108414860A CN108414860A (en) | 2018-08-17 |
| CN108414860B true CN108414860B (en) | 2021-02-23 |
Family
ID=63129966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810183819.4A Active CN108414860B (en) | 2018-03-06 | 2018-03-06 | Performance detection method and device of high-frequency cable and readable storage medium |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108414860B (en) |
| WO (1) | WO2019169957A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414860B (en) * | 2018-03-06 | 2021-02-23 | 深圳创维数字技术有限公司 | Performance detection method and device of high-frequency cable and readable storage medium |
| CN109507488B (en) * | 2019-01-21 | 2021-10-01 | 武汉裕量信息科技有限公司 | Electromagnetic anti-interference performance test system |
| CN113341242A (en) * | 2021-04-25 | 2021-09-03 | 徐州大工电子科技有限公司 | Fault monitoring method and device for power converter |
| CN116760434B (en) * | 2023-06-15 | 2024-01-26 | 深圳市泰士特线缆有限公司 | Intelligent detection method, device, equipment and medium for communication cable |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262201A (en) * | 2011-07-15 | 2011-11-30 | 北京水木源华电气有限公司 | Method and system for detecting faults of overhead power distribution line |
| CN102891702A (en) * | 2012-10-15 | 2013-01-23 | 华为技术有限公司 | Cable diagnosis method and device |
| CN205986862U (en) * | 2016-09-22 | 2017-02-22 | 成都长城开发科技有限公司 | Device of power line carrier communication test |
| CN107015119A (en) * | 2017-05-12 | 2017-08-04 | 中广核核电运营有限公司 | A kind of signal cable Circuit fault diagnosis device and method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101452033B (en) * | 2009-01-08 | 2011-08-17 | 福建星网锐捷网络有限公司 | Electromagnetic compatibility test probe for cable common mode signal and test equipment |
| JP2011080896A (en) * | 2009-10-08 | 2011-04-21 | Ntt Infranet Co Ltd | Cable detection method |
| CA2818206C (en) * | 2010-11-17 | 2018-04-03 | Dirk Hertz | Electrical device and method for determining a phase failure in the electrical device |
| CN102721909B (en) * | 2012-07-03 | 2015-07-08 | 广州供电局有限公司 | Ultrahigh frequency radiation characteristic simulation method and system for cable body |
| CN106772178A (en) * | 2016-12-12 | 2017-05-31 | 国网北京市电力公司 | The calibration equipment of high frequency electric live testing apparatus for local discharge, method and device |
| CN206930736U (en) * | 2016-12-31 | 2018-01-26 | 国网浙江省电力公司舟山供电公司 | One kind is used for high-tension cable many reference amounts detection means |
| CN108414860B (en) * | 2018-03-06 | 2021-02-23 | 深圳创维数字技术有限公司 | Performance detection method and device of high-frequency cable and readable storage medium |
-
2018
- 2018-03-06 CN CN201810183819.4A patent/CN108414860B/en active Active
-
2019
- 2019-01-16 WO PCT/CN2019/071881 patent/WO2019169957A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262201A (en) * | 2011-07-15 | 2011-11-30 | 北京水木源华电气有限公司 | Method and system for detecting faults of overhead power distribution line |
| CN102891702A (en) * | 2012-10-15 | 2013-01-23 | 华为技术有限公司 | Cable diagnosis method and device |
| CN205986862U (en) * | 2016-09-22 | 2017-02-22 | 成都长城开发科技有限公司 | Device of power line carrier communication test |
| CN107015119A (en) * | 2017-05-12 | 2017-08-04 | 中广核核电运营有限公司 | A kind of signal cable Circuit fault diagnosis device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108414860A (en) | 2018-08-17 |
| WO2019169957A1 (en) | 2019-09-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108414860B (en) | Performance detection method and device of high-frequency cable and readable storage medium | |
| CN102749539A (en) | Fast electromagnetic compatibility test and diagnosis system with quantization electromagnetic interference | |
| US11131704B2 (en) | Method and measuring apparatus for testing a device under test | |
| CN106776301B (en) | Subelement testing method and device | |
| CN106597098B (en) | A kind of data processing method and device of spectrum analyzer | |
| CN112491484A (en) | Radio frequency test method, device, storage medium and electronic device | |
| CN107070566A (en) | Intelligence test is managed | |
| CN111710347B (en) | Audio data analysis method, electronic device and storage medium | |
| CN107222270B (en) | Test method, test system and test equipment of communication equipment | |
| CN115664568A (en) | Method and device for testing antenna performance, electronic equipment and storage medium | |
| KR20160122376A (en) | Apparatus for testing inverter performance | |
| CN105573878A (en) | Remote terminal test method and system | |
| CN111614412B (en) | Radio frequency test method, device, electronic equipment and readable storage medium | |
| CN113495210A (en) | Low-voltage switch sampling inspection control method, device, equipment and storage medium | |
| KR102053169B1 (en) | Test apparatus for quality of distribution transformer and computer-readable storage medium | |
| JP2020102684A (en) | Mobile terminal test device and test case extraction method of the same | |
| CN209928942U (en) | Test device and test system | |
| CN113701811B (en) | Design automatic test method, platform, storage medium and electronic equipment | |
| CN113358930B (en) | Harmonic wave test system, device and method based on signal deviation | |
| US20230156495A1 (en) | Mobile terminal testing system and parameter setting method thereof | |
| US20230128364A1 (en) | Testing method and testing system | |
| EP3696763B1 (en) | Method of creating and optimizing customized data sheets, customer portal and non-transitory computer-readable recording medium | |
| CN111505423B (en) | Method and system for testing electric quantity of low-power-consumption equipment | |
| CN117129829A (en) | Chip testing method and device, electronic equipment and storage medium | |
| CN109581193B (en) | Circuit filtering function detection method, circuit filtering function detection device and computer storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |