A non-contact high-speed cable pitch measurement method and related equipment

Abstract

The present application discloses a non-contact high-speed cable pitch measurement method and related equipment, which is applied to a non-contact high-speed cable pitch measurement device including a laser meter and a diameter gauge, the method comprising: in the cable output process, using a laser meter to measure and obtain a variable frequency PWM waveform corresponding to the speed change of the measured cable; when the pulse edge of each pulse in the variable frequency PWM waveform is triggered, using a diameter gauge to obtain the measured value of the cross-sectional diameter of the measured cable; constructing a measured value waveform based on the measured value; obtaining the actual measured length corresponding to the measured value, and obtaining a real-time pitch value based on the measured value waveform and the actual measured length. The present application realizes non-contact measurement and control of cable pitch through a laser meter and a diameter gauge, avoiding the influence of contact measurement or visual measurement on the measurement accuracy, and is suitable for cables of high-speed production lines to realize real-time measurement of pitch.

Description

Technical Field

[0001] The present application relates to the field of laser measurement technology, and in particular to a non-contact high-speed cable pitch measurement method and related equipment. Background Art

[0002] The pitch measurement of cables is of great significance for the production of cables with regular protrusions on the surface, such as stranded wires, armored wires, etc. The strand pitch refers to the rotation distance of the twisted core wires. The smaller the strand pitch, the higher the frequency of core wire rotation. The strand pitch has an important influence on the bending performance, anti-interference and service life of the cable.

[0003] Existing pitch measurement technologies are usually machine vision image recognition technology or contact optical pitch detection technology. A large amount of shooting is required during the machine vision detection process, and the shooting speed cannot match the production speed required by the cable. A large amount of redundant data will be generated during the detection process, which increases the time for data processing and cannot meet the high-speed production requirements of the production line. In addition, due to the reflective characteristics of the cable itself, the polarizer of the industrial camera can only reduce the metal reflection, and the reflection also affects the detection accuracy of the machine vision. Since the contact optical pitch detection needs to be in direct contact with the cable, it is very easy to damage the twisted cable. In addition, since the encoder rotates by the friction of the cable, the encoder cannot accurately feedback the length of the cable when the production line is running at high speed, which has a great impact on the pitch detection accuracy. If the pitch detection accuracy can be guaranteed by low-speed operation, it will slow down the production efficiency of the twisted cable and cannot meet the production task. It can be seen that the existing cable pitch measurement rate is slow and the accuracy is low. Summary of the invention

[0004] In order to solve the above technical problems, the embodiments of the present application provide a non-contact high-speed cable pitch measurement method and device, electronic device, computer-readable storage medium, and computer program product.

[0005] In the first aspect, in order to solve the above technical problems, the present application provides a non-contact high-speed cable pitch measurement method, which is applied to a non-contact high-speed cable pitch measurement device including a laser meter and a diameter gauge, and the method includes:

[0006] During the cable output process, the laser meter is used to measure and obtain a variable frequency PWM waveform corresponding to the speed change of the measured cable;

[0007] When the pulse edge of each pulse in the variable frequency PWM waveform is triggered, using the diameter gauge to obtain a measurement value of the cross-sectional diameter of the measured cable;

[0008] Constructing a measurement value waveform based on the measurement value;

[0009] An actual measured length corresponding to the measured value is obtained, and a real-time pitch value is obtained based on the measured value waveform and the actual measured length.

[0010] The beneficial effects are:

[0011] In the technical solution provided in the embodiment of the present application, a variable frequency PWM waveform corresponding to the speed change of the measured cable is obtained by measuring with a laser meter during the cable output process; when the pulse edge of each pulse in the variable frequency PWM waveform is triggered, a diameter gauge is used to obtain the measured value of the cross-sectional diameter of the measured cable. Collecting the measured value when the pulse edge is triggered can reduce the error of obtaining the speed, thereby obtaining a more accurate measurement value, and then constructing a measurement value waveform based on the measurement value; obtaining the actual measurement length corresponding to the measurement value, and obtaining the real-time pitch value based on the measurement value waveform and the actual measurement length. In this way, non-contact measurement and control of cable pitch is achieved through a laser meter and a diameter gauge, avoiding the influence of contact measurement or visual measurement on the measurement accuracy, and is suitable for cables of high-speed production lines to measure pitch in real time.

[0012] In a second aspect, the present invention provides a non-contact high-speed cable pitch measurement device, including the non-contact high-speed cable pitch measurement method as described above; the device includes a main body, a laser meter and a diameter gauge, the main body is provided with a through hole, and the cable output by the cable device passes through the through hole to achieve non-contact high-speed cable pitch measurement;

[0013] The diameter gauge is arranged on the inner wall of the through hole, and the laser meter is arranged above the main body, and the speed measurement of the cable is achieved through the notch above the through hole.

[0014] In a third aspect, the present application also provides an electronic device, comprising: one or more processors; a storage device for storing one or more programs, wherein when the one or more programs are executed by the one or more processors, the electronic device implements the non-contact high-speed cable pitch measurement method as described above.

[0015] In a fourth aspect, the present application further provides a computer-readable storage medium having computer-readable instructions stored thereon, which, when executed by a processor of a computer, enables the computer to execute the non-contact high-speed cable pitch measurement method as described above.

[0016] In a fifth aspect, the present application also provides a computer program product or a computer program, which includes a computer instruction stored in a computer-readable storage medium. A processor of a computer device reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the computer device executes the non-contact high-speed cable pitch measurement method provided in the above various optional embodiments.

[0017] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0019] Figure 1 It is a schematic diagram of an implementation environment involved in this application;

[0020] Figure 2 is a flow chart of a non-contact high-speed cable pitch measurement method shown in an exemplary embodiment of the present application;

[0021] Figure 3 is a schematic diagram of the cross section of the stranded wire;

[0022] Figure 4 is a schematic diagram of a measurement value waveform corresponding to a twisted wire in an exemplary embodiment provided by the present application;

[0023] Figure 5 is a schematic diagram of a non-contact high-speed cable pitch measurement device shown in an exemplary embodiment of the present application;

[0024] Figure 6 is a schematic diagram of the positional relationship between a laser meter and a cable in an exemplary embodiment provided by the present application;

[0025] Figure 7 is a cross-sectional schematic diagram of a non-contact high-speed cable pitch measurement device in an exemplary embodiment provided by the present application;

[0026] Figure 8 It is a structural diagram of a computer system suitable for implementing an electronic device of an embodiment of the present application. DETAILED DESCRIPTION

[0027] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0028] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0029] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0030] The term "multiple" as used in this application refers to two or more than two. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0031] In order to solve the problems of slow speed and low accuracy of existing cable pitch measurement, the embodiments of the present application propose a non-contact high-speed cable pitch measurement method and device, electronic device, and computer-readable storage medium, which mainly involve non-contact high-speed cable pitch measurement technology included in laser measurement technology. These embodiments will be described in detail below.

[0032] First see Figure 1 , Figure 1 Schematic diagram of an implementation environment involved in the present application. The implementation environment includes a non-contact high-speed cable pitch measurement device 10 and a server 20, and the non-contact high-speed cable pitch measurement device 10 and the server 20 communicate with each other through a wired or wireless network.

[0033] The server 20 is used to use a laser meter to measure the variable frequency PWM (Pulse Width Modulation) waveform corresponding to the speed change of the measured cable during the cable output process; when the pulse edge of each pulse in the variable frequency PWM waveform is triggered, the diameter gauge is used to obtain the measured value of the cross-sectional diameter of the measured cable; the measured value waveform is constructed based on the measured value; the actual measured length corresponding to the measured value is obtained, and the real-time pitch value is obtained based on the measured value waveform and the actual measured length, and the obtained real-time pitch value is transmitted to the non-contact high-speed cable pitch measurement device 10 for display. Compared with the cable pitch measurement scheme of the prior art, the non-contact high-speed cable pitch measurement method provided by this implementation environment can improve the accuracy of the measurement results and is suitable for cables of high-speed production lines, and real-time pitch measurement.

[0034] It should be noted that Figure 1 The server 20 in the implementation environment shown can be an independent server or a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, content delivery networks (CDN), and big data and artificial intelligence platforms, and there is no restriction here.

[0035] Figure 2 is a flowchart of a non-contact high-speed cable pitch measurement method shown in an exemplary embodiment of the present application. The method can be applied to Figure 1 The implementation environment shown in Figure 1 The server 20 in the embodiment shown is specifically implemented. In other implementation environments, the method may be implemented by devices in other implementation environments, and this embodiment does not limit this.

[0036] like Figure 2 As shown, in an exemplary embodiment, the non-contact high-speed cable pitch measurement method may include steps S201 to S204, which are described in detail as follows:

[0037] Step S201, during the cable output process, a laser meter is used to measure and obtain a variable frequency PWM waveform corresponding to the speed change of the measured cable.

[0038] Step S202, when the pulse edge of each pulse in the variable frequency PWM waveform is triggered, a diameter gauge is used to obtain a measurement value of the cross-sectional diameter of the measured cable.

[0039] Step S203: constructing a measurement value waveform based on the measurement value.

[0040] Step S204, obtaining the actual measured length corresponding to the measured value, and obtaining the real-time pitch value based on the measured value waveform and the actual measured length.

[0041] In this embodiment, during the process of the cable equipment outputting the cable, a laser meter is used to measure the speed change of the measured cable to obtain a corresponding variable frequency PWM waveform. In this way, the laser meter is used to achieve non-contact measurement of the cable movement speed without affecting the measurement result or the cable itself, and the characteristics of laser measurement are used to ensure the accuracy of the measurement result.

[0042] While measuring and obtaining the variable frequency PWM waveform, when the pulse edge of each pulse in the variable frequency PWM waveform is triggered, the diameter gauge is used to obtain the measured value of the cross-sectional diameter of the measured cable, and the measured value waveform is constructed using the measured value, so as to intuitively reflect the change in the cross-sectional diameter of the measured cable at the collection point of the diameter gauge through the measured value waveform. In this way, the cross-sectional diameter of the measured cable can be measured contactlessly by the diameter gauge, and the cross-sectional diameter of the measured cable can be collected at the edge triggering moment, which can reduce the error of the acquisition speed and obtain a more accurate value. After completing the collection of various data, the actual measurement length corresponding to the measurement value is obtained, and the real-time pitch value is calculated based on the measurement value waveform and the actual measurement length.

[0043] In addition, the embodiments provided in the present application are suitable for production lines that generate high-speed cables. The maximum measurement speed of the laser meter can reach 5000m / min. During implementation, the specific measurement speed is set according to demand and matched with the sampling rate of the corresponding diameter gauge to achieve accurate detection of the pitch in a high-speed environment. For example, when the speed of the measured cable measured by the laser meter is 2000m / min, the sampling rate of the diameter gauge is not less than 10,000 times / s, while most of the cable pitch detection devices on the market can detect cable speeds within 200m / min. The present application solves the problem of low pitch measurement accuracy due to the mismatch between the measurement speed and the cable production speed.

[0044] As can be seen from the above, in the method provided in this embodiment, on the one hand, during the cable output process, a laser meter is used to measure and obtain a variable frequency PWM waveform corresponding to the speed change of the measured cable; when the pulse edge of each pulse in the variable frequency PWM waveform is triggered, a diameter gauge is used to obtain the measured value of the cross-sectional diameter of the measured cable, and the measurement value is collected when the pulse edge is triggered, which can reduce the error of obtaining the speed, thereby obtaining a more accurate measurement value. On the other hand, a measurement value waveform is constructed based on the measurement value; the actual measurement length corresponding to the measurement value is obtained, and the real-time pitch value is obtained based on the measurement value waveform and the actual measurement length. In this way, non-contact measurement and control of cable pitch is achieved through a laser meter and a diameter gauge, avoiding the influence of contact measurement or visual measurement on measurement accuracy, real-time detection improves cable production quality, and is suitable for cables of high-speed production lines, real-time measurement of pitch, and greatly improves production efficiency. In addition, while outputting cable pitch information, real-time cable speed information can also be output, so that the test environment that this application can be applied to is wide.

[0045] In an exemplary embodiment provided by the present application, the specific steps of using a laser meter to measure and obtain a variable frequency PWM waveform corresponding to the speed change of the measured cable include:

[0046] Use a laser meter to measure the speed of the cable under test and obtain a speed signal;

[0047] The speed signal is processed by pulse width modulation to obtain a variable frequency PWM waveform.

[0048] In this embodiment, the laser meter is configured with a correspondence between each pulse and the number of meters of the interval, so the laser meter calculates the moving speed of the measured cable through the output pulse, the collected time change and the correspondence to obtain a speed signal. After obtaining the speed signal, the speed signal is converted into a pulse waveform signal of different frequencies through pulse width modulation, thereby forming a variable frequency PWM waveform corresponding to the speed signal.

[0049] In this way, the present application uses the above-mentioned embodiments to measure the speed change of the measured cable using a laser meter, which can achieve non-contact measurement of the cable movement speed without affecting the measurement results or the cable itself, and uses the characteristics of laser measurement to ensure the accuracy of the measurement results.

[0050] In an exemplary embodiment provided by the present application, the specific steps of obtaining the measurement values ​​of the cross-sectional diameters of a preset number of measured cables by using a caliper include:

[0051] When the pulse edge of each pulse in the variable frequency PWM waveform is triggered, the pulse input generated by measuring the cross-sectional diameter of the measured cable is captured by the diameter gauge, and the cross-sectional diameter of the measured cable is recorded as a real-time projection value;

[0052] When the number of real-time projection values ​​reaches a preset number, the preset number of real-time projection values ​​is used as the measurement value, and the preset number is 2. N , where N is a natural number greater than zero.

[0053] In this embodiment, the real-time projection value accumulation needs to reach a waveform that can identify multiple pitches, that is, the preset number is 2 N The specific value can be set according to the needs and is not limited here.

[0054] like Figure 3 As shown, Figure 3 Therefore, after the non-contact high-speed cable pitch measurement method provided in the present application is applied to the detection of the pitch of the stranded wire and the corresponding cross-sectional diameter measurement value of the measured stranded wire is obtained, the measurement value waveform is constructed based on the measurement value, such as Figure 4 As shown, Figure 4 Schematic diagram of a measurement waveform corresponding to a stranded wire in an exemplary embodiment provided by the present application. The measurement waveform can reflect the diameter change of the stranded wire detected by the caliper, and is applied to the calculation of the pitch.

[0055] In another exemplary embodiment, the output pulse resolution of the laser meter is consistent with the input pulse resolution of the caliper, and the preset number of real-time projection values ​​included in the measurement value is acquired when the pulse edge of each pulse in the variable frequency PWM waveform is triggered, so the number of real-time projection values ​​is equal to the number of pulses of the corresponding variable frequency PWM waveform. It can be seen that the specific steps of obtaining the actual measured length corresponding to the measurement value include:

[0056] Obtain the corresponding relationship between the pulse number of the laser meter counter and the meter count;

[0057] The output pulse number of the laser meter corresponding to the measured value is obtained as the target pulse number;

[0058] The actual measured length is obtained based on the corresponding relationship and the target pulse number.

[0059] In this embodiment, the number of meters represented by each pulse is consistent, so the corresponding relationship between the number of pulses of the laser meter counter and the number of meters is a proportional relationship. Since the output pulse resolution of the laser meter counter is consistent with the input pulse resolution of the diameter gauge, each time the laser meter counter generates a pulse, the diameter gauge will capture and measure the cross-sectional diameter of the measured cable when the edge is triggered. Therefore, the number of output pulses of the laser meter counter corresponding to the measured value is also the preset number, that is, the target number of pulses is the same as the value of the preset number. After obtaining the corresponding relationship and the target number of pulses, the actual measured length of the cable corresponding to the measured value is calculated using the corresponding relationship to be applied to the calculation of the pitch.

[0060] In this way, through the above-mentioned embodiments, the present application configures the corresponding relationship between each pulse interval and the number of meters in the variable frequency PWM waveform, and sets the output pulse resolution of the laser meter to be consistent with the input pulse resolution of the diameter gauge, so that after obtaining the measured value of the cross-sectional diameter of the measured cable, the present application can deduce the corresponding actual measured length, thereby improving the accuracy of each measurement data.

[0061] In an exemplary embodiment provided by the present application, the specific steps of obtaining the real-time pitch value based on the measured value waveform and the actual measured length include:

[0062] Performing discrete Fourier transform on the measured value waveform to obtain the frequency spectrum of the measured value waveform;

[0063] Obtaining the average period of the measured value waveform based on the frequency spectrum;

[0064] The actual measured length is divided by the average period to obtain a calculated result characterized as a real-time pitch value.

[0065] Figure 5 FIG. 1 is a schematic diagram of a non-contact high-speed cable pitch measurement device according to an exemplary embodiment of the present application. Figure 5As shown, the device includes a laser meter 510 and a diameter gauge 520, and the diameter gauge 520 is provided with a through hole, and the cable output by the cable production equipment passes through the through hole to realize a non-contact high-speed cable pitch measurement method through the laser meter 510 and the diameter gauge 520;

[0066] The laser meter 510 is disposed above the diameter gauge 520 and measures the speed of the cable through the gap above the through hole.

[0067] In addition, if Figure 6 As shown, Figure 6 The figure is a schematic diagram of the positional relationship between the laser meter and the cable in an exemplary embodiment provided by the present application. The laser meter is installed at a distance b1 from the cable to measure the moving speed of the cable in real time. The value of b1 is set according to the requirements to achieve accurate measurement.

[0068] The device applies the non-contact high-speed cable pitch measurement method provided by the present application. During the cable output process, a laser meter is used to measure and obtain the variable frequency PWM waveform corresponding to the speed change of the measured cable; when the pulse edge of each pulse in the variable frequency PWM waveform is triggered, a diameter gauge is used to obtain the measured value of the cross-sectional diameter of the measured cable. The measurement value is collected when the pulse edge is triggered, which can reduce the error of the acquisition speed, thereby obtaining a more accurate measurement value, and then the measurement value waveform is constructed based on the measurement value; the actual measurement length corresponding to the measurement value is obtained, and the real-time pitch value is obtained based on the measurement value waveform and the actual measurement length. In this way, non-contact measurement and control of cable pitch is achieved through a laser meter and a diameter gauge, avoiding the influence of contact measurement or visual measurement on the measurement accuracy, and is suitable for cables of high-speed production lines to measure pitch in real time.

[0069] In another exemplary embodiment, see Figure 7 , Figure 7 FIG. 1 is a cross-sectional schematic diagram of a non-contact high-speed cable pitch measurement device in an exemplary embodiment provided by the present application. Figure 7 As shown, the measuring plane of the caliper and the measuring plane of the laser meter are located in the same plane. The caliper includes at least two groups of lasers and laser receivers, such as Figure 7 As shown in the figure, LD2 and L2 are a group of lasers and laser receivers, LD3 and L3 are a group of lasers and laser receivers, C1 is the width of LD3, C2 is the width of LD2, and the lasers and laser receivers are arranged relative to each other on the inner wall of the through hole to realize the measurement of the cross-sectional diameter of cables in multiple directions.

[0070] It should be noted that the non-contact high-speed cable pitch measurement device provided in the above embodiment and the non-contact high-speed cable pitch measurement method provided in the above embodiment belong to the same concept, and the specific manner in which each structure performs the operation has been described in detail in the method embodiment, which will not be repeated here. In practical applications, the non-contact high-speed cable pitch measurement device provided in the above embodiment can allocate the above functions to different functional modules as needed, that is, divide the internal structure of the device into different functional modules to complete all or part of the functions described above, and this is not limited here.

[0071] An embodiment of the present application also provides an electronic device, including: one or more processors; a storage device for storing one or more programs, when the one or more programs are executed by one or more processors, the electronic device implements the non-contact high-speed cable pitch measurement method provided in the above-mentioned embodiments.

[0072] Figure 8 The structure diagram of the computer system suitable for implementing the electronic device of the embodiment of the present application is shown. It should be noted that: Figure 8 The computer system 800 of the electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application. For example, the electronic device including the computer system 800 can be independent of the non-contact high-speed cable pitch measurement, and can also be set in a diameter gauge to implement the non-contact high-speed cable pitch measurement method.

[0073] like Figure 8 As shown, the computer system 800 includes a central processing unit (CPU) 801, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 802 or the program loaded from the storage part 808 to the random access memory (RAM) 803, such as executing the method in the above embodiment. Various programs and data required for system operation are also stored in the RAM 803. The CPU 801, ROM 802 and RAM 803 are connected to each other through a bus 804. The input / output (I / O) interface 805 is also connected to the bus 804.

[0074] The following components are connected to the I / O interface 805: an input section 806 including a keyboard, a mouse, etc.; an output section 807 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker; a storage section 808 including a hard disk, etc.; and a communication section 809 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 809 performs communication processing via a network such as the Internet. A drive 810 is also connected to the I / O interface 805 as needed. A removable medium 811, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 810 as needed, so that a computer program read therefrom is installed into the storage section 808 as needed.

[0075] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication part 809, and / or installed from a removable medium 811. When the computer program is executed by a central processing unit (CPU) 801, various functions defined in the system of the present application are executed.

[0076] It should be noted that the computer-readable medium shown in the embodiment of the present application may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier, in which a computer-readable computer program is carried. This propagated data signal may take a variety of forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, apparatus or device. A computer program contained on a computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0077] The flowcharts and block diagrams in the accompanying drawings illustrate the possible implementation architecture, functions and operations of the apparatus, method and computer program product according to various embodiments of the present application. Among them, each box in the flowchart or block diagram can represent a module, a program segment, or a part of the code, and the above-mentioned module, program segment, or a part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart, can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0078] Another aspect of the present application also provides a computer-readable storage medium having a computer program stored thereon, which implements the non-contact high-speed cable pitch measurement method as described above when the computer program is executed by a processor. The computer-readable storage medium may be included in the electronic device described in the above embodiment, or may exist independently without being assembled into the electronic device.

[0079] Another aspect of the present application also provides a computer program product or computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the non-contact high-speed cable pitch measurement method provided in each of the above embodiments.

[0080] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A non-contact high-speed cable pitch measurement method, characterized in that: A non-contact high-speed cable pitch measurement device including a laser meter and a diameter gauge, the method comprising: During the cable output process, the laser meter is used to measure the variable frequency PWM waveform corresponding to the speed change of the measured cable, including: using the laser meter to measure the speed of the measured cable to obtain a speed signal; performing pulse width modulation processing on the speed signal to obtain a variable frequency PWM waveform; When the pulse edge of each pulse in the variable frequency PWM waveform is triggered, using the diameter gauge to obtain a measurement value of the cross-sectional diameter of the measured cable; Constructing a measurement value waveform based on the measurement value; Acquire an actual measured length corresponding to the measured value, and obtain a real-time pitch value based on the measured value waveform and the actual measured length; The output pulse resolution of the laser meter counter is consistent with the input pulse resolution of the diameter gauge; the obtaining of the actual measured length corresponding to the measured value comprises: obtaining the correspondence between the pulse number of the laser meter counter and the meter count; obtaining the output pulse number of the laser meter counter corresponding to the measured value as the target pulse number; and obtaining the actual measured length based on the correspondence and the target pulse number. The method of obtaining a real-time pitch value based on the measurement value waveform and the actual measurement length comprises: performing a discrete Fourier transform on the measurement value waveform to obtain a frequency spectrum of the measurement value waveform; obtaining an average period of the measurement value waveform based on the frequency spectrum; and dividing the actual measurement length by the average period to obtain a calculation result characterized as a real-time pitch value.

2. The method according to claim 1, characterized in that When the pulse edge of each pulse in the variable frequency PWM waveform is triggered, the diameter gauge is used to obtain the measured value of the cross-sectional diameter of the measured cable, including: When the pulse edge of each pulse in the variable frequency PWM waveform is triggered, the pulse input generated by measuring the cross-sectional diameter of the measured cable is captured by the diameter gauge as a real-time projection value of the cross-sectional diameter of the measured cable, and recorded; When the number of the real-time projection values ​​reaches a preset number, the preset number of real-time projection values ​​is used as the measurement value, and the preset number is 2. N , where N is a natural number greater than zero.

3. A non-contact high-speed cable pitch measurement device, characterized in that: The non-contact high-speed cable pitch measurement method according to any one of claims 1 or 2 is applied; the device comprises a laser meter and a diameter gauge, the diameter gauge is provided with a through hole, the cable output by the cable production equipment passes through the through hole to realize the non-contact high-speed cable pitch measurement method through the laser meter and the diameter gauge; The laser meter is arranged above the diameter gauge, and the speed measurement of the cable is achieved through the gap above the through hole.

4. The device according to claim 3, wherein the measuring plane of the caliper and the measuring plane of the laser meter are located in the same plane.

5. The device according to claim 3, wherein the diameter measuring instrument comprises at least two groups of lasers and laser receivers, and the lasers and the laser receivers are arranged opposite to each other on the inner wall of the through hole.

6. An electronic device, characterized in that: include: one or more processors; A storage device for storing one or more programs, which, when executed by the one or more processors, enables the electronic device to implement the non-contact high-speed cable pitch measurement method as described in any one of claims 1 or 2.

7. A computer-readable storage medium, characterized in that: Computer-readable instructions are stored thereon, and when the computer-readable instructions are executed by a processor of a computer, the computer is caused to execute the non-contact high-speed cable pitch measurement method as described in any one of claims 1 or 2.

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