CN112945077B - Twisted pair lay length detection method and device applied to twisted pair cable - Google Patents
Twisted pair lay length detection method and device applied to twisted pair cable Download PDFInfo
- Publication number
- CN112945077B CN112945077B CN202110145894.3A CN202110145894A CN112945077B CN 112945077 B CN112945077 B CN 112945077B CN 202110145894 A CN202110145894 A CN 202110145894A CN 112945077 B CN112945077 B CN 112945077B
- Authority
- CN
- China
- Prior art keywords
- twisted pair
- target
- wire
- lay
- output voltage
- 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
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/14—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Communication Cables (AREA)
Abstract
The application provides a twisted pair lay length detection method and device applied to a twisted pair cable. In this embodiment, the twisted pair lay length is determined by injecting a low frequency into a first wire of the twisted pair and collecting an output voltage value of a second end point of a second wire of the twisted pair, so that the twisted pair lay length of the twisted pair cable is detected. Further, the twisted pair lay detection provided by the embodiment can also be used for detecting the twisted pair lay of the twisted pair on a production line, and the twisted pair lay detection is another alternative method different from the existing twisted pair lay detection, which is more efficient and lower in cost due to no need of computer processing compared with the existing twisted pair lay detection method described in the background art.
Description
Technical Field
The present disclosure relates to data monitoring technologies, and in particular, to a twisted pair lay length detection method and apparatus applied to a twisted pair cable.
Background
Twisted Pair (TP), which is one of the most commonly used transmission media in integrated wiring engineering, can be formed by twisting a Pair of metal wires, such as copper wires, etc., with each other at a certain density. Here, a pair of metal wires twisted together are insulated from each other. In the twisted pair, the electric wave radiated by one metal wire in the transmission process can be counteracted by the electric wave emitted by the other metal wire, and the degree of signal interference is effectively reduced.
The concept of twisted pair lay length has been introduced for twisted pairs. The twisted pair lay length is used for distinguishing the magnetic field effect of each metal wire in the twisted pair during transmission, and the influence between adjacent pairs is reduced. Generally speaking, the tighter the twisted knot of the twisted pair, the more uniform the twist pitch, the stronger the low frequency interference rejection, the smaller the crosstalk inside the twisted pair, and the better the performance of data transmission.
At present, the twist lay of a twisted pair is obtained based on real-time detection on a production line of the twisted pair, and specifically comprises the following steps: and (3) real-time projecting an image corresponding to the twisted pair output by the twisted pair equipment outlet through an industrial camera, and processing the image by a computer to obtain the twist pitch of the twisted pair.
However, the method for obtaining the twist lay of the twisted pair is limited to detection during production, and once the twisted pair is wrapped in an auxiliary material for external insulation application (i.e. a twisted pair cable is formed), there is no method for detecting the twist lay of the twisted pair in the twisted pair cable for the twisted pair wrapped in the auxiliary material for external insulation application. Here, the auxiliary insulating material may be an insulating cable sleeve, an acetate cloth tape, a woven mesh, a composite wire covering, or the like, and the present embodiment is not particularly limited.
Disclosure of Invention
The application provides a twisted pair lay detection method and device applied to a twisted pair cable, so as to realize twisted pair lay detection in the twisted pair cable.
The technical scheme provided by the embodiment of the application comprises the following steps:
a method of twisted pair lay detection for use in a twisted pair cable, the method comprising:
inputting an input voltage signal with a specified frequency to a first end point of a first wire in a target twisted pair; the voltage amplitude of the input voltage signal is a specified voltage value; the specified frequency is within a specified low frequency range;
sampling an output voltage signal of a second wire in the target twisted pair at a second end point to obtain a corresponding output voltage value; the output voltage signal is a voltage signal which is induced by the second wire based on electromagnetic induction and has the same frequency as the input voltage signal but different voltage amplitude; the second wire and the first wire are twisted to form the target twisted pair, a first end of the first wire and a first end of the second wire are connected to a first connector, and a second end of the first wire and a second end of the second wire are connected to a second connector;
determining a target twisted pair lay of the target twisted pair according to the output voltage value and the target twisted pair signal attribute of the target twisted pair; the target twisted pair signal attributes at least comprise: a voltage amplitude of the input voltage signal and a line attribute parameter of the specified frequency, the first line, or the second line.
As an embodiment, the determining a target twisted pair lay length of the target twisted pair according to the output voltage value and the target twisted pair signal attribute of the target twisted pair includes:
searching a target corresponding relation matched with the output voltage value and the target twisted-pair signal attribute in the obtained corresponding relation configuration; the corresponding relation configuration comprises the corresponding relation among the attribute of the twisted pair signal, the output voltage value and the twist pitch of the twisted pair;
and determining the twisted pair lay in the target corresponding relation as the target twisted pair lay of the target twisted pair.
As an embodiment, the correspondence is configured as a correspondence curve for representing correspondence among twisted pair signal attributes, output voltage values, and twisted pair twist pitches;
the correspondence curve is determined by the following steps:
for each sample twisted pair, inputting a corresponding sample input voltage signal to a first endpoint of any one line in the sample twisted pair; the voltage amplitude of the sample input voltage signal is a sample voltage value; the frequency of the sample input voltage signal is a sample frequency, and the sample frequency is in a specified low frequency range; sampling a sample voltage signal of the other line of the sample twisted pair at a second endpoint to obtain a corresponding sample output voltage value; recording the corresponding relation among the sample output voltage value of the sample twisted pair, the known signal attribute of the sample twisted pair and the known twisted pair lay of the sample twisted pair;
and simulating the corresponding relation curve according to the recorded corresponding relation among the sample output voltage value, the sample twisted pair signal attribute and the twisted pair lay length.
As one embodiment, the target twisted pair is a signal line of a car radio;
the maximum frequency in the low frequency range is less than or equal to 300KHz.
As an embodiment, after determining the target twisted pair lay of the target twisted pair according to the output voltage value and the target twisted pair signal attribute of the target twisted pair, the method further includes:
determining the twisted pair lay range matched with the target twisted pair;
checking whether the target twisted pair lay length is within the twisted pair lay length range, if not, determining that the first wire and the second wire do not meet the set twisted pair requirement, and if so, determining that the first wire and the second wire meet the set twisted pair requirement.
As an embodiment, the determining the twisted pair lay length range matched by the target twisted pair includes:
searching a target twisted pair lay configuration matched with the output voltage value and the target twisted pair signal attribute in the obtained twisted pair lay configuration, wherein the twisted pair lay configuration comprises a corresponding relation among the twisted pair signal attribute, the output voltage value and a twisted pair lay range;
determining a twisted pair lay range in the target twisted pair lay configuration as a twisted pair lay range for which the twisted pairs match.
Determining the twisted pair lay range for which the target twisted pair is matched comprises:
searching a target twisted-pair lay configuration matched with the output voltage value and the target twisted-pair signal attribute in the obtained twisted-pair lay configuration, wherein the twisted-pair lay configuration comprises a corresponding relation among the twisted-pair signal attribute, the output voltage value and a twisted-pair lay range;
determining a twisted pair lay range in the target twisted pair lay configuration as a twisted pair lay range for the twisted pair match
The embodiment of the application provides a twisted pair lay detection device applied to a twisted pair cable, and the device comprises:
the circuit unit is used for generating an input voltage signal with a specified frequency and inputting the input voltage signal to a first end point of a first line in a target twisted pair; the voltage amplitude of the input voltage signal is a designated voltage value; the specified frequency is within a specified low frequency range;
the sampling unit is used for sampling an output voltage signal of a second wire in the target twisted pair at a second end point to obtain a corresponding output voltage value; the output voltage signal is a voltage signal which is induced by the second wire based on electromagnetic induction and has the same frequency as the input voltage signal but different voltage amplitude; the second wire and the first wire are twisted to form the target twisted pair, a first end of the first wire and a first end of the second wire are connected to a first connector, and a second end of the first wire and a second end of the second wire are connected to a second connector;
the detection unit is used for determining the target twisted pair lay of the target twisted pair according to the output voltage value and the target twisted pair signal attribute of the target twisted pair; the target twisted pair signal attributes at least include: a voltage amplitude of the input voltage signal and a line attribute parameter of the specified frequency, the first line, or the second line.
As an embodiment, the determining, by the detection unit, a target twisted pair lay length of the target twisted pair according to the output voltage value and a target twisted pair signal attribute of the target twisted pair includes:
searching a target corresponding relation matched with the output voltage value and the target twisted-pair signal attribute in the obtained corresponding relation configuration; the corresponding relation configuration comprises the corresponding relation among the attribute of the twisted pair signal, the output voltage value and the twist pitch of the twisted pair;
and determining the twisted pair lay length in the target corresponding relation as the target twisted pair lay length of the twisted pair.
As an embodiment, the detection unit further determines a twisted pair lay range matched with the target twisted pair after determining a target twisted pair lay of the target twisted pair according to the output voltage value and the target twisted pair signal attribute of the target twisted pair;
checking whether the target twisted pair lay length is within the twisted pair lay length range, if not, determining that the first wire and the second wire do not meet the set twisted pair requirement, and if so, determining that the first wire and the second wire meet the set twisted pair requirement.
The embodiment of the application also provides the electronic equipment. The electronic device includes: a processor and a machine-readable storage medium;
the machine-readable storage medium stores machine-executable instructions executable by the processor;
the processor is configured to execute machine executable instructions to implement the steps of the method disclosed above.
According to the technical scheme, the twist lay of the twisted pair is determined by injecting the first wire in the twisted pair at a low frequency and sampling the output voltage value of the second end point of the second wire in the twisted pair, so that the twist lay of the twisted pair in the twisted pair cable is detected.
Further, the above method provided by the present application may also be applied to twisted pair lay detection of a twisted pair on a production line, where the twisted pair lay detection is another alternative way different from the existing twisted pair lay detection, and compared with the existing twisted pair lay detection way described in the background art, only the first line in the twisted pair needs to be injected with low frequency, and the output voltage value of the second end point of the second line in the twisted pair needs to be sampled to determine the twisted pair lay, so that computer processing is not needed, the twisted pair lay determination efficiency is improved, and the twisted pair lay detection cost is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic diagram of a twisted pair cable according to an embodiment of the present application;
FIG. 2 is a flow chart of a method provided by an embodiment of the present application;
fig. 3 is a schematic structural diagram of a target twisted pair according to an embodiment of the present application;
FIG. 4 is an exemplary flowchart of step 203 provided by embodiments of the present application;
FIG. 5 is a block diagram of an apparatus according to an embodiment of the present disclosure;
fig. 6 is a block diagram of an electronic device according to an embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
In order to make the technical solutions provided in the embodiments of the present application better understood and make the above objects, features and advantages of the embodiments of the present application more comprehensible, the technical solutions in the embodiments of the present application are described in further detail below with reference to the accompanying drawings.
In application, the twist lay of the twisted pair needs to be detected not only when the twisted pair is produced on a production line, but also after the twisted pair is wrapped and coated with auxiliary materials such as an acetate tape and the like to form a twisted pair cable. Optionally, once the twist lay of the twisted pair is detected, it may be determined whether the wires in the twisted pair are twisted, for example, whether a pair of wires in the twisted pair are twisted together (which may also be said to meet the twisted pair requirement), and the like, which will be described in detail later and will not be described herein again.
Optionally, in this embodiment, in order to detect the twist lay lengths of the twisted pairs in the twisted pair cable, the embodiment of the present application provides a method as shown in fig. 2:
referring to fig. 2, fig. 2 is a flowchart of a method provided in an embodiment of the present application. The process may be used to detect a twisted pair lay length of a twisted pair in a twisted pair cable. Taking the twisted pair cable shown in fig. 1 as an example, as shown in fig. 1, the twisted pairs in the twisted pair cable shown in fig. 1 are twisted together by two wires, and for convenience of description, one of the wires may be referred to as a first wire (e.g., reference numeral (3) of fig. 1), and the other wire may be referred to as a second wire (e.g., reference numeral (4) of fig. 1). It should be noted that fig. 1 illustrates one twisted pair as an example. Optionally, when the twisted-pair cable shown in fig. 1 includes a plurality of twisted pairs, the processing for each twisted pair is similar and is not described in detail.
As shown in fig. 1, in the present embodiment, the first line and one of the end points (referred to as a first end point) of the first line in fig. 1 may be commonly connected to the connector 101 (for example, as indicated by reference numeral (1) in fig. 1). Accordingly, the first wire and the other end point (denoted as the second end point) of the first wire in fig. 1 may also be commonly connected to the connector 102 (such as indicated by reference numeral (2) in fig. 1). Alternatively, in this embodiment, the connectors 101 and 102 include, but are not limited to, a rivet terminal + housing, an Insulation Displacement Connector (Insulation Displacement Connector), an aerial Connector, a network port Connector, and the like. In this embodiment, the connectors 101 and 102 may be the same or different depending on the actual situation. Also, the connectors 101 and 102 may be implemented by a plurality of different connectors according to actual situations, and the present embodiment is not particularly limited.
Optionally, in the present embodiment, the first wire and the first wire include, but are not limited to, an electronic wire such as a copper wire, and the present embodiment is not particularly limited.
Optionally, in this embodiment, the flow shown in fig. 2 may be applied to an electronic device, and this embodiment does not specifically limit a specific implementation form of the electronic device.
As shown in fig. 2, the process may include the following steps:
In this embodiment, the target twisted pair may be generally referred to as any twisted pair in the twisted pair cable, and this embodiment is not particularly limited.
Alternatively, in this embodiment, the voltage amplitude of the input voltage signal (also referred to as the input voltage amplitude, which will be described below by taking the input voltage amplitude as an example) is a designated voltage value. As an embodiment, the specified voltage value may be a standard voltage value required by the CAN bus, such as 3.3V, 2.5V, and the like, and the embodiment is not particularly limited.
Optionally, in this embodiment, the specified frequency is within a specified low frequency range. In specific implementation, the low frequency range may be set according to an actual application scenario. For example, when the method is applied to a vehicle-mounted scene, taking a vehicle-mounted radio as an example, the target twisted pair may be a signal line of the vehicle-mounted radio, and the low frequency range may be 0 to 300KHz. As an embodiment, the above-mentioned designated frequency may be one of the above-mentioned low frequency ranges, such as 50KHz, correspondingly.
Optionally, in this embodiment, to facilitate the sampling in the subsequent step 202, the input voltage signal may be a relatively stable square wave signal. Of course, the present embodiment is not limited to the waveform structure of the input voltage signal, and may be a sine wave, and the present embodiment is not limited to the waveform structure.
In application, after an input voltage signal with a specified frequency is input to a first end point of a first wire in a target twisted pair, according to an electromagnetic induction law, an inductance coil on a second wire in the target twisted pair generates self-inductance, and the inductance coil on the second wire and the inductance coil on the first wire are mutually influenced to generate mutual inductance. Fig. 3 shows a simple example of the structure of the first wire and the second wire (respectively including a resistor and an inductor), the second wire will finally induce a voltage signal with the same frequency as the input voltage signal but different voltage amplitude based on the self-inductance generated by the self-inductor and the mutual inductance between the inductor in the second wire and the inductor in the first wire. It can be seen that, in this embodiment, the output voltage signal is a voltage signal induced by the second wire based on electromagnetic induction and having the same frequency as the input voltage signal but a different voltage amplitude.
Optionally, in this embodiment, the single chip microcomputer may be used to sample the output voltage signal of the second wire at the second endpoint in the target twisted pair to obtain the corresponding output voltage value. Specifically, in this embodiment, when the single chip microcomputer is used to sample the output voltage signal of the second end of the second line in the target twisted pair to obtain the corresponding output voltage value, an Analog-to-Digital Converter (ADC) interface of the single chip microcomputer may be first connected to the second end of the second line, and the ADC of the single chip microcomputer reads the value (denoted as the ADC value) output by the second end of the second line. The ADC value read is one in the specified ADC range. As an embodiment, the specified ADC range is determined according to the number of bits of the ADC, for example, if the ADC is 8-bit, the specified ADC range is 0 to 255, and accordingly, the ADC value is one of 0 to 255. For another example, if the ADC is 12-bit, the ADC range is specified to be 0 to 4095, and the ADC value is one of 0 to 4095. For another example, if the ADC is 16-bit, the ADC range is specified to be 0 to 65535, and the ADC value is one of 0 to 65535. By analogy, the description is not repeated here by way of example. And then converting the read ADC value into an actual voltage value. Optionally, for the ADC, a corresponding relationship between the voltage value corresponding to the ADC and each ADC value in the specified ADC range is configured in advance (which may be indicated by a relationship curve). Based on this, in this embodiment, the voltage value corresponding to the read ADC value may be found based on the pre-configured correspondence between the voltage value and the ADC value, and the found voltage value may be determined as the output voltage value. It should be noted that, the sampling is described here only for simplicity, and the embodiment of the present application does not specifically limit the specific implementation form of the sampling.
In this embodiment, the line attribute parameters of the first line and the second line are the same. Line attribute parameters herein include, but are not limited to: length, wire diameter. The following description will be given by taking the length and the wire diameter as examples.
As an embodiment, in step 203, there are many implementation manners for determining the target twisted pair lay of the target twisted pair according to the output voltage value and the target twisted pair signal attribute of the target twisted pair, and one implementation manner will be described in the following by referring to fig. 4 for example, which is not described herein again.
Thus, the flow shown in fig. 2 is completed.
As shown in the flow illustrated in fig. 2, in this embodiment, the twisted pair lay is determined by injecting a low frequency into a first line of the twisted pair and sampling an output voltage value of a second end point of a second line of the twisted pair, so that the twisted pair lay of the twisted pair in the twisted pair cable is detected.
Further, the process provided in this embodiment may also be applied to twisted pair lay detection of a twisted pair on a production line, where the twisted pair lay detection is another alternative way different from the existing twisted pair lay detection, and compared with the existing twisted pair lay detection way described in the background art, only the first line in the twisted pair needs to be injected with low frequency, and the output voltage value of the second end point of the second line in the twisted pair needs to be sampled to determine the twisted pair lay, so that computer processing is not needed, the twisted pair lay determination efficiency is improved, and the twisted pair lay detection cost is reduced.
The above step 202 is described as follows:
referring to fig. 4, fig. 4 is a flowchart illustrating step 203 provided in an embodiment of the present application. As shown in fig. 4, the process may include the following steps:
Optionally, in this embodiment, the corresponding relationship configuration includes a corresponding relationship among a twisted pair signal attribute, an output voltage value, and a twisted pair lay length. Optionally, as an embodiment, the corresponding relationship configuration may be a corresponding relationship curve used for representing a corresponding relationship among the twisted pair signal attribute, the output voltage value, and the twisted pair lay length.
As an embodiment, the correspondence curve may be simulated through experiments, or may be calculated through computer simulation or theoretical calculation, and the embodiment is not limited in particular.
For example, the correspondence curve may be determined by the following steps:
step a1, aiming at each sample twisted pair, inputting a corresponding sample input voltage signal to a first endpoint of any line in the sample twisted pair; the voltage amplitude of the sample input voltage signal is a sample voltage value; the frequency of the sample input voltage signal is a sample frequency, and the sample frequency is in a specified low frequency range; sampling a sample voltage signal of the other line of the sample twisted pair at a second endpoint to obtain a corresponding sample output voltage value; and recording the corresponding relation among the sample output voltage value of the sample twisted pair, the known signal attribute of the sample twisted pair and the known twisted pair twist distance of the sample twisted pair.
Alternatively, in this embodiment, the different sample twisted pairs may have different twisted pair pitches, and/or different lengths, and/or different wire diameters, and/or different materials. The sample input voltage signals injected by different sample twisted pairs differ in sample frequency and/or voltage amplitude. Table 1 below illustrates the correspondence between the sample output voltage value in each sample twisted pair, the known signal property of the sample twisted pair, and the known twisted pair lay length of the sample twisted pair:
TABLE 1
And a2, simulating the corresponding relation curve according to the recorded corresponding relation among the sample output voltage value, the sample twisted pair signal attribute and the twisted pair lay length.
Alternatively, for example, a corresponding curve may be simulated by combining table 1, that is, the above-mentioned corresponding curve. How to simulate the simulation can be according to the existing simulation mode, and the embodiment is not particularly limited.
Thus, the determination of the corresponding relation curve can be realized through the steps a1 and a 2. It should be noted that, the steps a1 and a2 are only for describing the determination of the corresponding relationship curve by way of example, and are not limited.
After the corresponding relationship curve is determined, optionally, the output voltage value and the target twisted pair signal attribute may be used as a key to search a corresponding twisted pair lay in the corresponding relationship curve, and the found twisted pair lay is determined as the target twisted pair lay of the target twisted pair.
The flow shown in fig. 4 is completed.
Through the process shown in fig. 4, the determination of the target twisted pair lay of the target twisted pair is realized according to the output voltage value and the target twisted pair signal attribute of the target twisted pair.
Optionally, in this embodiment, after determining the target twisted pair lay, the following steps may be further performed:
and b1, determining the twisted pair lay length range matched with the twisted pair.
As one example, here, determining the twisted pair lay range for which the twisted pairs match may include:
searching a target twisted-pair lay configuration matched with the output voltage value and the target twisted-pair signal attribute in the obtained twisted-pair lay configuration, wherein the twisted-pair lay configuration comprises a corresponding relation among the twisted-pair signal attribute, the output voltage value and a twisted-pair lay range;
determining a twisted pair lay range in the target twisted pair lay configuration as a twisted pair lay range for which the twisted pairs match.
Alternatively, referring to the technical requirements of the physical layer of the CAN bus of the GB/T36048 passenger vehicle, the twisted pair lay of the target twisted pair is generally within the range of 25 +/-5 mm.
Step b2, checking whether the target twisted pair lay length is within the twisted pair lay length range, if not, determining that the first wire and the second wire do not meet the set twisted pair requirement, and if so, determining that the first wire and the second wire meet the set twisted pair requirement.
That is, when the target twisted pair lay is not within the twisted pair lay range, it is determined that the first wire and the second wire in the target twisted pair are not twisted, and/or do not satisfy the set time and labor consuming requirements. This kind of situation can be handled in time to avoid the risk.
Through the steps b1 and b2, whether two wires in the twisted pair meet the twisted pair requirement can be detected in time and rapidly by means of the twisted pair lay length, so that corresponding processing can be executed in time when the two wires in the twisted pair do not meet the twisted pair requirement, and risks are avoided.
The method provided by the present application is described above, and the device provided by the present application is described below:
referring to fig. 5, fig. 5 is a structural diagram of an apparatus provided in the embodiment of the present application. The apparatus corresponds to the process shown in FIG. 1. As shown in fig. 5, the apparatus may include:
the circuit unit is used for generating an input voltage signal with a specified frequency and inputting the input voltage signal to a first end point of a first line in a target twisted pair; the voltage amplitude of the input voltage signal is a specified voltage value; the specified frequency is within a specified low frequency range;
the sampling unit is used for sampling an output voltage signal of a second wire in the target twisted pair at a second end point to obtain a corresponding output voltage value; the output voltage signal is a voltage signal which is induced by the second wire based on electromagnetic induction and has the same frequency as the input voltage signal but different voltage amplitude; the second wire and the first wire are twisted into the target twisted pair, a first end of the first wire and a first end of the second wire are connected to a first connector, and a second end of the first wire and a second end of the second wire are connected to a second connector;
the detection unit is used for determining the target twisted pair lay of the target twisted pair according to the output voltage value and the target twisted pair signal attribute of the target twisted pair; the target twisted pair signal attributes at least include: a voltage amplitude of the input voltage signal and a line attribute parameter of the specified frequency, the first line, or the second line.
Optionally, in this embodiment, the determining, by the detection unit, the target twisted pair lay of the target twisted pair according to the output voltage value and the target twisted pair signal attribute of the target twisted pair includes:
searching a target corresponding relation matched with the output voltage value and the target twisted-pair signal attribute in the obtained corresponding relation configuration; the corresponding relation configuration comprises the corresponding relation among the attribute of the twisted pair signal, the output voltage value and the twist pitch of the twisted pair;
and determining the twisted pair lay length in the target corresponding relation as the target twisted pair lay length of the twisted pair.
Optionally, the corresponding relationship is configured as a corresponding relationship curve for representing a corresponding relationship among a twisted pair signal attribute, an output voltage value, and a twisted pair lay length. As an embodiment, the correspondence curve is determined by:
for each sample twisted pair, inputting a corresponding sample input voltage signal to a first end point of any line in the sample twisted pair; the voltage amplitude of the sample input voltage signal is a sample voltage value; the frequency of the sample input voltage signal is a sample frequency, and the sample frequency is in a specified low frequency range; sampling a sample voltage signal of the other line of the sample twisted pair at a second endpoint to obtain a corresponding sample output voltage value; recording the corresponding relation among the sample output voltage value of the sample twisted pair, the known signal attribute of the sample twisted pair and the known twisted pair lay of the sample twisted pair;
and simulating the corresponding relation curve according to the recorded corresponding relation among the sample output voltage value, the sample twisted pair signal attribute and the twisted pair lay length.
Optionally, the target twisted pair is a signal line of the vehicle radio; correspondingly, as an embodiment, the maximum frequency in the low frequency range may be less than or equal to 300KHz.
Optionally, in this embodiment, the detection unit further determines a twisted pair lay length range matched with the target twisted pair after determining a target twisted pair lay length of the target twisted pair according to the output voltage value and a target twisted pair signal attribute of the target twisted pair; checking whether the target twisted pair lay length is within the twisted pair lay length range, if not, determining that the first wire and the second wire do not meet the set twisted pair requirement, and if so, determining that the first wire and the second wire meet the set twisted pair requirement.
Optionally, in this embodiment, the determining, by the detection unit, the twisted pair lay range where the target twisted pair is matched may include: searching a target twisted-pair lay configuration matched with the output voltage value and the target twisted-pair signal attribute in the obtained twisted-pair lay configuration, wherein the twisted-pair lay configuration comprises a corresponding relation among the twisted-pair signal attribute, the output voltage value and a twisted-pair lay range; determining the twisted pair lay length range in the target twisted pair lay length configuration as the twisted pair lay length range matched by the twisted pair.
Thus, the description of the structure of the apparatus shown in fig. 5 is completed.
The embodiment of the application also provides a hardware structure of the device shown in fig. 5. Referring to fig. 6, fig. 6 is a structural diagram of an electronic device according to an embodiment of the present disclosure. As shown in fig. 6, the hardware structure may include: a processor and a machine-readable storage medium having stored thereon machine-executable instructions executable by the processor; the processor is configured to execute machine-executable instructions to implement the methods disclosed in the above examples of the present application.
Based on the same application concept as the method, the embodiment of the present application further provides a machine-readable storage medium, where several computer instructions are stored, and when the computer instructions are executed by a processor, the method disclosed in the above example of the present application can be implemented.
The machine-readable storage medium may be, for example, any electronic, magnetic, optical, or other physical storage device that can contain or store information such as executable instructions, data, and the like. For example, the machine-readable storage medium may be: a RAM (random Access Memory), a volatile Memory, a non-volatile Memory, a flash Memory, a storage drive (e.g., a hard drive), a solid state drive, any type of storage disk (e.g., an optical disk, a dvd, etc.), or similar storage medium, or a combination thereof.
The systems, apparatuses, modules or units described in the above embodiments may be specifically implemented by a computer chip or an entity, or implemented by a product with certain functions. A typical implementation device is a computer, which may take the form of a personal computer, laptop computer, cellular telephone, camera phone, smart phone, personal digital assistant, media player, navigation device, email messaging device, game console, tablet computer, wearable device, or a combination of any of these devices.
For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functionality of the various elements may be implemented in the same one or more pieces of software and/or hardware in the practice of the present application.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of 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 flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Furthermore, 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 above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A method for twisted pair lay detection in a twisted pair cable, the method comprising:
inputting an input voltage signal with a specified frequency to a first end point of a first line in a target twisted pair; the voltage amplitude of the input voltage signal is a designated voltage value; the specified frequency is within a specified low frequency range;
sampling output voltage signals of a second wire in the target twisted pair at a second endpoint to obtain a corresponding output voltage value; the output voltage signal is a voltage signal which is induced by the second wire based on electromagnetic induction and has the same frequency as the input voltage signal but different voltage amplitude; the second wire and the first wire are twisted into the target twisted pair, a first end of the first wire and a first end of the second wire are connected to a first connector, and a second end of the first wire and a second end of the second wire are connected to a second connector;
determining a target twisted pair lay of the target twisted pair according to the output voltage value and the target twisted pair signal attribute of the target twisted pair; the target twisted pair signal attributes at least comprise: a voltage amplitude of the input voltage signal and a line property parameter of the specified frequency, the first line, or the second line.
2. The method of claim 1, wherein said determining a target twisted pair lay of the target twisted pair based on the output voltage value and a target twisted pair signal attribute of the target twisted pair comprises:
searching a target corresponding relation matched with the output voltage value and the target twisted-pair signal attribute in the obtained corresponding relation configuration; the corresponding relation configuration comprises the corresponding relation among the attribute of the twisted pair signal, the output voltage value and the twist pitch of the twisted pair;
and determining the twisted pair lay in the target corresponding relation as the target twisted pair lay of the target twisted pair.
3. The method of claim 2, wherein the mapping relationship is configured as a mapping relationship curve for representing mapping relationships among twisted pair signal attributes, output voltage values, and twisted pair twist pitches;
the correspondence curve is determined by the following steps:
for each sample twisted pair, inputting a corresponding sample input voltage signal to a first end point of any line in the sample twisted pair; the voltage amplitude of the sample input voltage signal is a sample voltage value; the frequency of the sample input voltage signal is a sample frequency, and the sample frequency is in a specified low frequency range; sampling a sample voltage signal of the other line of the sample twisted pair at a second endpoint to obtain a corresponding sample output voltage value; recording the corresponding relation among the sample output voltage value of the sample twisted pair, the known signal attribute of the sample twisted pair and the known twisted pair lay of the sample twisted pair;
and simulating the corresponding relation curve according to the recorded corresponding relation among the sample output voltage value, the sample twisted pair signal attribute and the twisted pair lay length.
4. The method of claim 1 or 3, wherein the target twisted pair is a signal line of a car radio;
the maximum frequency in the low frequency range is less than or equal to 300KHz.
5. The method of claim 1, wherein after determining the target twisted pair lay of the target twisted pair based on the output voltage value and the target twisted pair signal attribute of the target twisted pair, the method further comprises:
determining the twisted pair lay length range matched with the target twisted pair;
checking whether the target twisted pair lay length is within the twisted pair lay length range, if not, determining that the first wire and the second wire do not meet the set twisted pair requirement, and if so, determining that the first wire and the second wire meet the set twisted pair requirement.
6. The method of claim 5, wherein determining the twisted pair lay range for which the target twisted pair matches comprises:
searching a target twisted pair lay configuration matched with the output voltage value and the target twisted pair signal attribute in the obtained twisted pair lay configuration, wherein the twisted pair lay configuration comprises a corresponding relation among the twisted pair signal attribute, the output voltage value and a twisted pair lay range;
determining a twisted pair lay range in the target twisted pair lay configuration as a twisted pair lay range for which the twisted pairs match.
7. A twisted pair lay detection apparatus for use in a twisted pair cable, the apparatus comprising:
the circuit unit is used for generating an input voltage signal with specified frequency and inputting the input voltage signal to a first end point of a first wire in a target twisted pair; the voltage amplitude of the input voltage signal is a designated voltage value; the specified frequency is within a specified low frequency range;
the sampling unit is used for sampling an output voltage signal of a second wire in the target twisted pair at a second end point to obtain a corresponding output voltage value; the output voltage signal is a voltage signal which is induced by the second wire based on electromagnetic induction and has the same frequency as the input voltage signal but different voltage amplitude; the second wire and the first wire are twisted to form the target twisted pair, a first end of the first wire and a first end of the second wire are connected to a first connector, and a second end of the first wire and a second end of the second wire are connected to a second connector;
the detection unit is used for determining the target twisted pair lay of the target twisted pair according to the output voltage value and the target twisted pair signal attribute of the target twisted pair; the target twisted pair signal attributes at least include: a voltage amplitude of the input voltage signal and a line property parameter of the specified frequency, the first line, or the second line.
8. The apparatus of claim 7, wherein the determining, by the detection unit, the target twisted pair lay of the target twisted pair based on the output voltage value and the target twisted pair signal attribute of the target twisted pair comprises:
searching a target corresponding relation matched with the output voltage value and the target twisted-pair signal attribute in the obtained corresponding relation configuration; the corresponding relation configuration comprises the corresponding relation among the attribute of the twisted pair signal, the output voltage value and the twist pitch of the twisted pair;
and determining the twisted pair lay length in the target corresponding relation as the target twisted pair lay length of the twisted pair.
9. The apparatus of claim 7, wherein the detection unit further determines a twisted pair lay range matched by the target twisted pair after determining a target twisted pair lay of the target twisted pair according to the output voltage value and a target twisted pair signal attribute of the target twisted pair;
checking whether the target twisted pair lay length is within the twisted pair lay length range, if not, determining that the first wire and the second wire do not meet the set twisted pair requirement, and if so, determining that the first wire and the second wire meet the set twisted pair requirement.
10. An electronic device, characterized in that the electronic device comprises: a processor and a machine-readable storage medium;
the machine-readable storage medium stores machine-executable instructions executable by the processor;
the processor is configured to execute machine executable instructions to implement the method steps of any of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110145894.3A CN112945077B (en) | 2021-02-02 | 2021-02-02 | Twisted pair lay length detection method and device applied to twisted pair cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110145894.3A CN112945077B (en) | 2021-02-02 | 2021-02-02 | Twisted pair lay length detection method and device applied to twisted pair cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112945077A CN112945077A (en) | 2021-06-11 |
| CN112945077B true CN112945077B (en) | 2023-02-28 |
Family
ID=76241831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110145894.3A Active CN112945077B (en) | 2021-02-02 | 2021-02-02 | Twisted pair lay length detection method and device applied to twisted pair cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112945077B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114912292B (en) * | 2022-06-09 | 2024-06-04 | 一汽解放汽车有限公司 | Method and device for determining blanking length of twisted pair before twisting and computer equipment |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06174457A (en) * | 1992-12-04 | 1994-06-24 | Mitsubishi Cable Ind Ltd | Twisting pitch measuring device for communication cable |
| CN201289950Y (en) * | 2008-11-04 | 2009-08-12 | 深圳华为通信技术有限公司 | Electronic equipment |
| CN101949681A (en) * | 2010-06-29 | 2011-01-19 | 南京德讯信息系统有限公司 | System and method for measuring length of twisted pair based on RS485 bus signal transmission delay |
| CN103149018A (en) * | 2013-03-01 | 2013-06-12 | 叶新峰 | Method for on-line dynamic test of cable lay |
| CN105066868A (en) * | 2015-07-22 | 2015-11-18 | 洛阳百克特摩擦材料有限公司 | Wire rope lay pitch on-line detection device and method |
| CN106158078A (en) * | 2015-03-28 | 2016-11-23 | 长城汽车股份有限公司 | Cable, twisted-pair feeder and preparation method thereof and computing device |
| CN108038839A (en) * | 2017-11-23 | 2018-05-15 | 宁波大学 | Twisted-pair feeder lay real-time detection method on a kind of flow production line |
| CN109978832A (en) * | 2019-03-01 | 2019-07-05 | 宁波大学 | A kind of twisted pair stranding distance detection method based on edge reconstruction |
| JP2019148481A (en) * | 2018-02-27 | 2019-09-05 | 日立金属株式会社 | Inspection method of twisted cable |
| CN110967044A (en) * | 2018-09-28 | 2020-04-07 | 矢崎总业株式会社 | Measuring method, transmission line diagnostic device, detection device, and linear sensor device |
| CN111521123A (en) * | 2020-04-30 | 2020-08-11 | 铜陵顶科镀锡铜线有限公司 | Automatic measuring device for twist pitch |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0560506A (en) * | 1991-09-03 | 1993-03-09 | Ohbayashi Corp | Lead wire for strain gauge |
| CN112268497A (en) * | 2020-11-11 | 2021-01-26 | 黄敏 | Stranded wire lay differential detection device and detection process |
-
2021
- 2021-02-02 CN CN202110145894.3A patent/CN112945077B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06174457A (en) * | 1992-12-04 | 1994-06-24 | Mitsubishi Cable Ind Ltd | Twisting pitch measuring device for communication cable |
| CN201289950Y (en) * | 2008-11-04 | 2009-08-12 | 深圳华为通信技术有限公司 | Electronic equipment |
| CN101949681A (en) * | 2010-06-29 | 2011-01-19 | 南京德讯信息系统有限公司 | System and method for measuring length of twisted pair based on RS485 bus signal transmission delay |
| CN103149018A (en) * | 2013-03-01 | 2013-06-12 | 叶新峰 | Method for on-line dynamic test of cable lay |
| CN106158078A (en) * | 2015-03-28 | 2016-11-23 | 长城汽车股份有限公司 | Cable, twisted-pair feeder and preparation method thereof and computing device |
| CN105066868A (en) * | 2015-07-22 | 2015-11-18 | 洛阳百克特摩擦材料有限公司 | Wire rope lay pitch on-line detection device and method |
| CN108038839A (en) * | 2017-11-23 | 2018-05-15 | 宁波大学 | Twisted-pair feeder lay real-time detection method on a kind of flow production line |
| JP2019148481A (en) * | 2018-02-27 | 2019-09-05 | 日立金属株式会社 | Inspection method of twisted cable |
| CN110967044A (en) * | 2018-09-28 | 2020-04-07 | 矢崎总业株式会社 | Measuring method, transmission line diagnostic device, detection device, and linear sensor device |
| CN109978832A (en) * | 2019-03-01 | 2019-07-05 | 宁波大学 | A kind of twisted pair stranding distance detection method based on edge reconstruction |
| CN111521123A (en) * | 2020-04-30 | 2020-08-11 | 铜陵顶科镀锡铜线有限公司 | Automatic measuring device for twist pitch |
Non-Patent Citations (2)
| Title |
|---|
| 双绞线间串扰分析;张溢强 等;《舰船电子工程》;20041231;第24卷;摘要，第72页第1段至第75页第3段 * |
| 基于梯度极值边缘跟踪与嵌入式系统的实时绞距检测算法;汪睿琪等;《激光杂志》;20180525(第05期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112945077A (en) | 2021-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112945077B (en) | Twisted pair lay length detection method and device applied to twisted pair cable | |
| CN104239306A (en) | Multimedia fingerprint Hash vector construction method and device | |
| CN110736899A (en) | Small current grounding fault positioning method and system, monitoring device, equipment and medium | |
| CN107736019A (en) | Vehicle-mounted security-monitoring monitoring method, system and terminal device | |
| CN106713280A (en) | Excitation signal processing method and device, and module verification system | |
| CN104808808A (en) | Information processing method and electronic device | |
| CN204191020U (en) | A kind of on-broad communication station bus mainboard | |
| CN107414251B (en) | Welding equipment, arcing determination processing method and device | |
| CN114137332A (en) | Signal testing apparatus, signal testing method, computer device, and storage medium | |
| CN107948790A (en) | Earphone recognition methods and device | |
| CN107889031A (en) | Audio control method, audio control device and electronic equipment | |
| CN105810225B (en) | Voice segment recombinates output method and device | |
| CN104657120A (en) | Information processing method and electronic device | |
| CN106845002B (en) | 3D simulation method and system for wiring harness in complete set of electrical equipment | |
| CN201327884Y (en) | SATA connecting device | |
| CN208655313U (en) | Cage disk connection twists equipment | |
| CN111210950A (en) | Calculation method for production arrangement structure of multi-strand stranded conductor | |
| CN103700992A (en) | Improved filtering assembly for connector and coil winding method | |
| KR102310023B1 (en) | Verification system, method and computer program for wiring harness | |
| CN113094906B (en) | Method, device, equipment and medium for calculating DC bias characteristics | |
| CN115062507B (en) | Non-magnetic core coil design method, coil, sensor, device, and storage medium | |
| CN116577687B (en) | Cell screening method and system for quick-charging battery pack, storage medium and computer | |
| CN111753391B (en) | Power transmission line design method and system based on maximum field intensity of surface of split conductor | |
| CN104053089B (en) | A kind of determination method, COBBAIF and the electronic equipment of audio jack pin | |
| CN106101060A (en) | A kind of information detecting method and device |
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 |