CN-122015655-A - Cable length metering system and method based on multi-mode identification and dynamic weighing

CN122015655ACN 122015655 ACN122015655 ACN 122015655ACN-122015655-A

Abstract

The application discloses a cable length metering system and a cable length metering method based on multi-mode identification and dynamic weighing, and relates to the technical field of cable measurement, wherein the system comprises a rotary weighing platform, a multi-mode identification module, a wire skin thickness detection unit and a data processing unit; the multi-mode identification module comprises at least two different physical characteristic identification sub-modules for acquiring geometric parameters, material properties and identification information of the spool, the thickness detection unit of the spool is used for measuring the thickness of a cable sheath in a non-contact mode, and the data processing unit is used for integrating weighing data, identification data and thickness data to establish a cable length calculation model containing dynamic compensation factors. The application has the effects of improving the cable length measurement precision, the cable length measurement efficiency and the cable adaptability.

Inventors

ZHOU ENYU
ZHU WENYUAN
LI WANRONG

Assignees

广州市槿泓电子有限公司

Dates

Publication Date: 20260512
Application Date: 20260128

Claims (10)

1. The cable length metering system based on multi-mode identification and dynamic weighing is characterized by comprising a rotary weighing platform, a multi-mode identification module, a wire skin thickness detection unit and a data processing unit; the rotary weighing platform is used for dynamically collecting the reference weight of the spool and the total weight of the cable; The multi-mode identification module comprises at least two different physical characteristic identification sub-modules and is used for acquiring geometric parameters, material properties and identification information of the spool; the thickness detection unit of the wire skin measures the thickness of the cable sheath in a non-contact mode; the data processing unit integrates the weighing data, the identification data and the thickness data, and establishes a cable length calculation model containing dynamic compensation factors.
2. The cable length metering system based on multi-mode identification and dynamic weighing according to claim 1, wherein the rotary weighing platform comprises a bearing table, a damping bearing, a driving motor and a piezoelectric film sensor with high sampling rate, the driving motor drives a spool to be measured on the weighing table to rotate at a low speed through the damping bearing so as to realize empty shaft peeling weight, and the sampling frequency of the piezoelectric film sensor is not lower than 1 kHz.
3. The multi-modal identification and dynamic weighing based cable length gauge system of claim 1, wherein said multi-modal identification module comprises: the visual identification sub-module is configured to acquire a spool profile image through an industrial camera and an annular light supplementing lamp, and extract the outer diameter, the inner diameter and the height of the spool based on an improved YOLOv model; The spectrum analysis sub-module is configured to collect the spool surface reflection spectrum by using a near infrared spectrometer and judge the material type by using a support vector machine classifier; The OCR recognition sub-module is configured to scan the spool label through the high-speed scanner and recognize the name and the model code of the supplier by combining with the custom word stock; and the visual recognition sub-module and the OCR sub-module are mutually checked, and a recognition check result is output.
4. The cable length metering system based on multi-mode identification and dynamic weighing according to claim 1, wherein the wire skin thickness detection unit comprises an ultrasonic array probe, an FPGA real-time processing board and a servo positioning mechanism; The servo positioning mechanism drives the ultrasonic array probe to axially move along the current measurement cable and keep vertically contacted with the surface of the cable skin, the ultrasonic array probe transmits ultrasonic waves to penetrate the cable skin and acquire echo signals, and the FPGA real-time processing board calculates the thickness of the cable skin based on the echo signals and a time-of-flight method.
5. The cable length metering system based on multi-mode identification and dynamic weighing according to claim 1, wherein the dynamic compensation factor is obtained by performing vibration noise suppression on weighing signals by the data processing unit according to a Kalman filtering algorithm, correcting net weight according to moisture absorption characteristics of cable materials by combining environmental parameters acquired by a built-in temperature and humidity sensor, and calculating the water absorption of a cable skin based on a preset material model.
6. The multi-modal identification and dynamic weighing based cable length gauge system of claim 1, wherein the expression of the cable length calculation model comprises: wherein L is the cable length; Calculating for a dynamic net weight based on the spool reference weight and a total cable weight; is a dynamic compensation coefficient; The density of the conductor and the density of the wire skin are respectively; the sectional area of the conductor and the sectional area of the wire skin are respectively.
7. The multi-modal identification and dynamic weighing-based cable length metering system of claim 1, wherein said data processing unit is further configured with a machine learning prediction module that predicts a density value of a conductor or wire based on a vendor ID, wire thickness and material type based on a random forest regressor, the prediction error not exceeding ± 0.02 g/cm3 for providing density substitution parameters when the vendor is not in inventory.
8. The multi-modal identification and dynamic weighing-based cable length gauge system of claim 6, further comprising an output and pre-alarm module configured to display cable length, spool model, vendor and thickness detection results in real time and trigger an audible and visual alarm and record anomaly data when any of the following occurs: the cable length deviation exceeds + -1%, the thickness of the wire skin exceeds the design tolerance range, or the supplier information is not recorded in the system database.
9. A cable length metering method based on multi-modal identification and dynamic weighing, characterized in that it is applied to a cable length metering system based on multi-modal identification and dynamic weighing as claimed in any one of claims 1 to 8, said method comprising: acquiring the reference weight of an empty wire shaft and the total weight of the wire cable and the wire shaft which are dynamically acquired in the wire cable paying-off process so as to determine the dynamic net weight of the wire cable; Acquiring spool geometric parameters, material properties and identification information synchronously output by at least two different physical characteristic recognition submodules; acquiring thickness data of the cable sheath measured by a cable sheath thickness detection unit; and constructing a cable length calculation model containing dynamic compensation factors based on the dynamic net weight, the spool geometric parameters, the material properties, the identification information and the cable sheath thickness data, and outputting cable length measurement results.
10. A computer readable storage medium storing a computer program, wherein the computer program when executed by a processor implements the steps of the multi-modal identification and dynamic weighing based cable length metering method of claim 9.

Description

Cable length metering system and method based on multi-mode identification and dynamic weighing Technical Field The application relates to the technical field of cable measurement, in particular to a cable length metering system and method based on multi-mode identification and dynamic weighing. Background In the cable production process, length metering is an important quality control link. With the continuous development of electronic equipment and industrial equipment, the demands for various electronic cables, industrial equipment connecting wires and industrial wire harnesses are increasing, and accurate measurement of the cable length has great significance for ensuring the product quality, improving the production efficiency and reducing the cost. Accurate length measurement can ensure that the performance of cable in practical application meets the requirements, reduces trouble and potential safety hazard because of length error brings. Currently, the main methods in the aspect of cable length measurement mainly comprise a traditional weighing method and a pure vision length measurement method, wherein the traditional weighing method is to convert the length by subtracting the empty axle weight (peeling weight) from the total weight of the spool and then combining the weight of the unit length of the cable, the pure vision length measurement method is to take the image of the moving process of the cable by a camera and count scales, and a plurality of single sensor schemes exist, such as only using laser ranging or RFID to identify the spool. However, these existing metering methods have significant drawbacks. The traditional weighing method does not consider the difference of bobbins, the empty shaft weights of different sizes and materials are different, the influence of the thickness of the wire skin and the fluctuation of the materials of suppliers on the weight of unit length is ignored, meanwhile, static weighing is easy to be interfered by residual glue of the bobbins, moisture absorption and weight increment of the wire skin and the like, so that the error is large, the pure vision length measuring method is only suitable for a straight line paying-off scene, metering cannot be carried out in a bobbin state, and the special-shaped shaft and the non-marking bobbin cannot be effectively identified. In summary, the prior art has the problems of low cable length measurement accuracy, low efficiency and poor adaptability, and needs to be improved. Disclosure of Invention In order to overcome the defects of the prior art and improve the measurement precision, the measurement efficiency and the adaptability of the cable length, the application provides a cable length metering system and a cable length metering method based on multi-mode identification and dynamic weighing. In a first aspect, the object of the application is achieved by the following technical scheme: the cable length metering system based on multi-mode identification and dynamic weighing comprises a rotary weighing platform, a multi-mode identification module, a wire skin thickness detection unit and a data processing unit; the rotary weighing platform is used for dynamically collecting the reference weight of the spool and the total weight of the cable; The multi-mode identification module comprises at least two different physical characteristic identification sub-modules and is used for acquiring geometric parameters, material properties and identification information of the spool; the thickness detection unit of the wire skin measures the thickness of the cable sheath in a non-contact mode; the data processing unit integrates the weighing data, the identification data and the thickness data, and establishes a cable length calculation model containing dynamic compensation factors. By adopting the technical scheme, because the traditional weighing method generally assumes that the density and the sectional area of the cable are constant, and the actual cable has obvious parameter fluctuation due to the difference of suppliers, batches or materials, the application obtains the real geometric parameters (such as the outer diameter, the inner diameter and the height) of the spool through the multi-mode identification module, combines the actual jacket thickness of the line skin thickness detection unit to actually measure the jacket thickness, and simultaneously, the data processing unit calls or predicts the corresponding density value by utilizing the material attribute and the identification information obtained by identification, so that the mass calculation of unit length approximates to physical reality. The multi-mode identification module can acquire geometric parameters, material properties and identification information of the spool through at least two different physical feature identification sub-modules, can be used for fusing multi-dimensional information and adapting to different spools, the thickness detection unit of