Intelligent twist instrument based on PLC control system and touch screen

Abstract

The invention discloses an intelligent twist instrument based on a PLC control system and a touch screen. The twist instrument mainly comprises a twist instrument main body, a mobile platform, a PLC (Programmable Logic Controller), a touch screen control device and a data interaction module. The twisting instrument main body is provided with a digital angle sensing assembly with a tension rod and a fixing hook driven by a test motor; the mobile platform drives the test motor to move through the servo motor and the ball screw. The PLC is responsible for cooperatively controlling the motion of the test motor and the servo motor and collecting signals of the digital angle sensing assembly; the touch screen control device provides a human-computer interaction interface and realizes parameter configuration, data display and alarm; and the data interaction module has the functions of test parameter import, detection data export and storage. Through deep integration of PLC core control, touch screen interaction and data closed-loop management, the problems that manual input of a traditional twist instrument is prone to errors, data circulation is not smooth, and intelligent closed-loop control is lacked are solved, and the automation degree and the quality control level of yarn twist detection are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of textile detection equipment, and particularly relates to an intelligent twist tester based on a PLC control system and a touch screen. BACKGROUND

[0002] As a core equipment for quality detection in the textile industry, the current twist tester has realized digital detection of the angle offset, but the test process still has the core defect of data closed loop rupture. On the one hand, the test parameters such as yarn type and standard twist value need to be input manually, and the misinput rate is more than 15% in the high-noise environment of the textile workshop, resulting in systematic deviation of batch detection results. On the other hand, the angle-twist conversion data is closed in the local equipment and cannot be exported to the factory manufacturing execution system, forcing the quality inspector to manually transcribe the report, and the single batch data transfer takes more than 10 minutes, which seriously restricts the quality traceability efficiency. More importantly, the traditional equipment lacks the parameter preloading function, and the same parameters need to be repeatedly input when facing batch detection of multi-specification yarns, causing more than 30% of the time to be wasted. This data island phenomenon has become a key bottleneck for the intelligent upgrading of the textile industry. SUMMARY

[0003] The present application aims to at least solve one of the problems in the prior art. To this end, the present application provides an intelligent twist tester based on a PLC control system and a touch screen.

[0004] The intelligent twist tester based on a PLC control system and a touch screen according to the first aspect of the present application is characterized in that it comprises: a twist tester main body comprising a base, a mounting frame mounted on the base, a test motor, a digital angle sensing assembly rotatably connected to the mounting frame, a rotatable tension rod provided on the digital angle sensing assembly, a fixed hook for clamping yarn fixedly connected to the motor shaft end of the test motor, a clamping assembly fixedly installed at the end of the tension rod away from the mounting frame, and two clamping plates provided in the horizontal direction, the two clamping plates being tightly abutted against each other. The digital angle sensing assembly comprises a rotating shaft, an embedded magnet and a magnetic sensitive circuit board, the end of the tension rod away from the clamping assembly is fixedly installed on the rotating shaft, the magnet is embedded on the rotating shaft, and the magnetic sensitive circuit board is in non-contact alignment detection with the magnet. A moving platform comprising a chassis and a driving device provided along the length direction of the chassis, the driving device comprising a ball screw and a bearing seat mounting the ball screw, one end of the ball screw being connected with a servo motor, a sliding nut being screwed on the ball screw, a sliding block being mounted on the sliding nut, and the test motor being mounted on the sliding block. PLC controller, used to coordinate the control of motor motion and angle signal acquisition, and electrically connect the test motor, servo motor and magnetic sensitive circuit board; A touch screen control device, used to display the real-time rotation angle of the output tension rod, integrate parameter input, data display and alarm functions, and is communicatively connected to the PLC controller; The data interaction module is electrically connected to the magnetic sensitive circuit board and the PLC controller; and includes: A data transmission interface, which supports importing test parameters and exporting test data, and is integrated into the data interaction module; The storage unit stores preset yarn type parameters and real-time detection data.

[0005] According to an embodiment of the present invention, an intelligent twist meter based on a PLC control system and a touch screen realizes the intelligence of the entire twist detection process through the deep integration of PLC central control and touch screen human-computer interaction, combined with non-contact angle detection and data closed-loop management, and has at least the following beneficial effects: the present invention presets parameters such as yarn type and standard twist value through the touch screen (the storage unit preloads the parameter library), replacing manual input one by one, shortening the parameter setting time of a single batch from 20 minutes to 10 seconds, and reducing the error input rate (eliminating the 15% manual error rate); the PLC controller coordinates the test motor speed and servo motor position The system is shifted (driven by a ball screw) and combined with the test number threshold function of the data interaction module, unattended continuous detection is realized, and batch efficiency is improved; the tension rod is directly connected to the digital angle sensor component via a stepped shaft (non-contact alignment of the magnet and the Hall sensor), with a resolution of 0.5° and a response speed of ≤10ms, which is lower than the visual interpretation error of the mechanical pointer (±0.8°); in addition, a closed-loop quality control system is implemented throughout the entire process, and the PLC dynamically compares the angle data of the magnetic-sensitive circuit board with the preset threshold (converted by the parameter parsing engine). When the time limit is exceeded, the touch screen will be linked to an audible and visual alarm and the test motor will be emergency stopped (response <50ms), reducing the quality accident rate.

[0006] According to some embodiments of the present invention, the rotating shaft is a stepped shaft structure, including a first step arranged inside the digital angle sensing assembly, and a second step connected to the tension rod, the magnet is embedded in the bottom of the first step, the cross-section of the second step is square, and the tension rod is provided with a square hole that cooperates with the second step.

[0007] According to some embodiments of the present invention, the data transmission interface is at least one of a USB Type-C, RS485 or a WiFi module.

[0008] According to some embodiments of the present invention, the test parameters include yarn linear density, standard twist value, and test number threshold.

[0009] According to some embodiments of the present application, the data interaction module integrates a parameter analysis engine that converts imported test parameters into a tension rod angle offset threshold value.

[0010] According to some embodiments of the present application, the data interaction module is embedded with an encryption chip that uses AES-256 encryption for exported data.

[0011] According to some embodiments of the present application, the magnetic sensitive circuit board is a digital Hall sensor.

[0012] According to some embodiments of the present application, the digital angle sensing assembly includes a shielded housing having a flange structure at the bottom thereof fixedly connected to the mounting bracket.

[0013] According to some embodiments of the present application, the touch screen control device is provided with a graphical parameter configuration interface.

[0014] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0015] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which: Figure 1 A structural schematic diagram of an embodiment of the present application; Figure 2 A mounting structure schematic diagram of a digital angle sensing assembly of an embodiment of the present application; Figure 3 An exploded structure schematic diagram of a digital angle sensing assembly of an embodiment of the present application; Figure 4 A structural schematic diagram of a mobile platform of an embodiment of the present application; Figure 5 A schematic diagram of a data interaction module of an embodiment of the present application; Figure 6 A parameter analysis engine running flowchart of an embodiment of the present application; Figure 7 A connection schematic diagram of a touch screen control device and a PLC controller of an embodiment of the present application.

[0016] 1, twist tester main body; 10, base; 11, winding device; 12, mounting frame; 14, test motor; 141, motor shaft; 15, fixed hook; 2, tension rod; 3, digital angle sensing assembly; 31, magnet; 32, magnetic sensitive circuit board; 4, rotating shaft; 5, clamping assembly; 51, clamping plate; 6, flange structure; 7, data interaction module; 71, data transmission interface; 72, storage unit; 8, moving platform; 81, base frame; 82, driving device; 83, bearing seat; 84, servo motor; 85, sliding block. DETAILED DESCRIPTION

[0017] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, for the purpose of explaining the present application, and should not be understood as a limitation of the present application.

[0018] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0019] In the description of the present application, the meaning of several is one or more, and the meaning of multiple is more than two. Greater than, less than, more than, etc. are understood as not including the number, and above, below, etc. are understood as including the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of indicated technical features.

[0020] In the description of the present application, unless otherwise explicitly limited, the words such as setting, mounting, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0021] Reference Figures 1-7 According to the first aspect of the present application, an intelligent twist tester based on PLC control system and touch screen, characterized in that it comprises: The twist tester main body 1 comprises a base 10, a mounting frame 12 and a test motor 14 mounted on the base 10, a digital angle sensing assembly 3 rotatably connected to the mounting frame 12, a rotatable tension rod 2 arranged on the digital angle sensing assembly 3, a fixed hook 15 for clamping yarn fixedly connected to the end of the motor shaft 141 of the test motor 14, wherein the digital angle sensing assembly 3 is rotatably connected to the mounting frame 12, which completely inherits the gravity mechanics characteristics of the balance wheel, and completely eliminates the visual error of ±0.8° through non-contact angle detection; the fixed hook 15 is coaxially arranged with the clamping assembly 5, so that the yarn untwisting path is strictly parallel to the axis of the tension rod 2, the eccentric tension fluctuation is suppressed within 5%, false angle deviation is eliminated from the root cause, and a basis guarantee is provided for 0.5° level high-resolution detection; the tension rod 2 is fixedly installed with the clamping assembly 5 at the end away from the mounting frame 12, the clamping assembly 5 comprises two clamping plates 51 arranged in the horizontal direction, the two clamping plates 51 abut against each other, the clamping assembly 5 adopts horizontal abutting design, realizes instantaneous fixing of yarn (time consumption ≤2 seconds), and has higher efficiency than traditional screw type clamps, and the clamping force is uniformly distributed to avoid yarn damage; The digital angle sensing assembly 3 comprises a rotating shaft 4 and an embedded magnet 31 and a magnetic sensitive circuit board 32, the end of the tension rod 2 away from the clamping assembly 5 is fixedly installed on the rotating shaft 4, the tension rod 2 is directly connected to the rotating shaft 4 of the digital angle sensing assembly 3, the mechanical transmission gap is eliminated, the millisecond level real-time transmission of tension deviation is ensured (response speed ≤10 ms), and the detection delay is reduced compared with the traditional connecting rod structure; the magnet 31 is embedded on the rotating shaft 4, the magnetic sensitive circuit board 32 is in non-contact alignment detection (distance ≤0.5 mm) with the magnet 31, directly outputs digital angle value, completely eliminates the visual error of ±0.8°, and the resolution reaches 0.5°; The moving platform 8 comprises a chassis 81 and a driving device 82 arranged along the length direction of the chassis 81, the driving device 82 comprises a ball screw and a bearing seat 83 mounting the ball screw, one end of the ball screw is connected with a servo motor 84, a sliding nut is screwed on the ball screw, a sliding block 85 is mounted on the sliding nut, and the test motor 14 is mounted on the sliding block 85; the servo motor 84 drives the sliding block 85 through the ball screw, cooperates with the grating ruler closed loop control, and realizes positioning accuracy of ±0.1 mm level of test length; the sliding nut and the linear bearing composite guide structure make the displacement drift amount of the moving platform 8 less than 0.05 mm in a 10 Hz vibration environment; the servo motor 84 and the digital angle sensing assembly 3 realize motion-detection cooperation through the controller, so that the cooperative error of length control and angle detection is reduced; A PLC controller is used to cooperatively control the motor movement and the angle signal acquisition, and is electrically connected to the test motor 14, the servo motor 84 and the magnetic sensitive circuit board 32; the PLC controller synchronously analyzes the millisecond level angle signal (resolution 0.5°) of the magnetic sensitive circuit board 32, and cooperatively drives the test motor 14 rotating speed and the servo motor 84 displacement (ball screw positioning accuracy ±0.1mm), so as to compress the multi-axis response delay to ≤10ms, and improve the efficiency compared with the separate control system; A touch screen control device is used to display the real-time rotating angle of the tension rod 2, the integrated parameter input, the data display and the alarm function, and is in communication connection with the PLC controller; A data interaction module 7 is electrically connected to the magnetic sensitive circuit board 32 and the PLC controller, and comprises: A data transmission interface 71 supports the test parameter import and the test data export, and is integrated in the data interaction module 7; a storage unit 72 stores the preset yarn type parameters and the real-time detection data. The data interaction module 7 and the aforementioned PLC controller form an intelligent data hub: the storage unit 72 preloads the yarn parameter library (such as the cotton yarn 80S standard twist value), and one-key import replaces manual input, so as to completely eliminate the 15% input error rate; the millisecond level angle data of the magnetic sensitive circuit board 32 (inherited from the 0.5° resolution above) is encrypted and directly input into the manufacturing execution system through the USB / RS485 / WiFi three-mode interface, so as to shorten the quality traceability from 24 hours to real time; more importantly, the data interaction module 7 dynamically stores the detection data of each batch (including the angle value, the twist conversion result and the over-limit mark), and when the real-time angle breaks the preset threshold value of the storage unit 72 (such as >30°), the display acousto-optic alarm and the abnormal data packet are marked in linkage, so as to build the full-closed-loop quality control system of “parameter import-real-time detection-over-limit interception-data traceability”, and improve the batch detection efficiency.

[0022] The touch screen control device realizes the three-in-one interaction: one-key import of the preset yarn parameters (such as the linear density and the standard twist value) of the storage unit 72, elimination of the 15% manual input error rate, real-time display of the angle curve of the tension rod 2 and the threshold warning line (such as >30° triggering red light flashing), accurate judgment of the operator within 5 meters of visual distance, linkage of the PLC controller to stop the test motor 14 (response <50ms) when the limit is exceeded, and reduction of the quality accident rate; According to the twist tester based on the PLC control system and the touch screen, the deep integration of the PLC central control and the touch screen human-computer interaction is combined with the non-contact angle detection and the data closed-loop management, so that the twist detection full-process intelligentization is realized, and at least the following beneficial effects are achieved: the yarn type, the standard twist value and other parameters (the parameter library is preloaded in the storage unit 72) are preset through the touch screen, manual input is replaced, the single batch parameter setting time is shortened from 20 minutes to 10 seconds, the misinput rate is reduced (the 15% manual miscode rate is eliminated), the PLC controller cooperatively controls the rotating speed of the test motor 14 and the displacement of the servo motor 84 (ball screw driving), the test number threshold function of the data interaction module 7 is combined, the unattended continuous detection is realized, and the batch efficiency is improved; the tension rod 2 is directly connected with the digital angle sensing assembly 3 (the magnet 31 and the Hall sensor are non-contacted and positioned) through the stepped shaft 4, the resolution is 0.5°, the response speed is less than or equal to 10 ms, and the visual judgment error (±0.8°) of the mechanical pointer is reduced; in addition, the full-process quality control closed loop is realized, the PLC dynamically compares the angle data of the magnetic sensitive circuit board 32 with the preset threshold value (the parameter analysis engine is converted), when the threshold value is exceeded, the touch screen sound and light alarm and the test motor 14 emergency stop (the response is less than 50 ms) are linked, and the quality accident rate is reduced.

[0023] According to some embodiments of the application, the shaft 4 is a stepped shaft structure, including a first step arranged inside the digital angle sensing assembly 3 and a second step connected with the tension rod 2, the magnet 31 is embedded at the bottom of the first step, the second step has a square cross section, and a square hole matched with the second step is arranged on the tension rod 2. The stepped shaft structure design of the application realizes the collaborative breakthrough of mechanical adaptability and measurement accuracy: the magnet 31 is embedded at the bottom of the first step, the distance between the magnet 1 and the magnetic sensitive circuit board 32 is constant, and the positioning deviation of the traditional split installation is eliminated; the square shaft of the second step is gaplessly matched with the square hole of the tension rod 2, the radial swing problem of the original pointer structure is completely solved, the angle detection resolution is improved to 0.5°, and more importantly, the stepped transition cross section (the first step is thickened by more than 30%) significantly enhances the bending stiffness of the shaft 4, and the signal stability is still maintained under the yarn tension sudden change working condition, thereby providing a hardware basis of millinewton level mechanical response for high yarn twist detection.

[0024] According to some embodiments of the application, the data transmission interface 71 is at least one of a USB Type-C, RS485 or WiFi module. The three-mode data transmission interface 71 (USB Type-C / RS485 / WiFi) forms a full-scene adaptive channel with the aforementioned data interaction module 7: the RS485 interface seamlessly accesses the old equipment network of the textile factory with a transmission distance of 30 meters and 5G anti-interference characteristics (inherited from the shielding shell design), ensuring zero packet loss of data packets in a strong electromagnetic workshop; the WiFi module directly connects to the factory manufacturing execution system, making real-time angle data (inherited from the 0.5° resolution) second-level synchronized to the cloud platform, and the quality traceability delay is zero from 24 hours; more importantly, the USB Type-C interface can still export encrypted historical data in the storage unit 72 offline when the network is disconnected, and analyze the CSV report (including batch number, timestamp, angle value, etc. Field) through the mobile APP, building a "wired + wireless + portable" three-in-one data closed loop, and the device compatibility covers more than 90% of textile factories.

[0025] According to some embodiments of the application, the test parameters include yarn linear density, standard twist value, and test frequency threshold. The structured design of test parameters (yarn linear density, standard twist value, and test frequency threshold) forms an intelligent process decision chain with the aforementioned data interaction module 7: the linear density parameter is automatically associated with the angle-twist conversion formula (such as T=K√D), which accurately converts the real-time angle value (inherited from the 0.5° resolution) into twist data, eliminating 15% of the conversion error of manual table lookup 15; the standard twist value preset threshold (such as cotton yarn 32T / m→offset angle 28.5°), when the real-time data is out of limit, immediately trigger the sound and light alarm of the display and terminate the test (linkage of the aforementioned data interaction module 7), intercepting the time efficiency to milliseconds; more importantly, the test frequency threshold (such as 50 times per batch) automatically controls the batch detection process, and generates an encrypted statistical report (including average value, range, CPK value) after reaching the set value, which improves the continuous detection efficiency of multi-specification yarns and the process compliance rate is 100%.

[0026] According to some embodiments of the present application, the data interaction module 7 integrates a parameter parsing engine that converts imported test parameters into tension rod 2 angle offset threshold values. The parameter parsing engine forms an intelligent process conversion chain with the aforementioned structured test parameters: based on the yarn linear density, dynamically call the GB / T 2543 standard algorithm (such as cotton θ = 0.86 × √D), real-time convert the abstract standard twist value (such as 32T / m) into the tension rod 2 angle offset threshold value (28.5°), eliminate the 15% conversion error of manual table lookup 15%; when the magnetic sensitive circuit board 32 millisecond level detection data breaks through the threshold value, immediately link the test motor 14 emergency stop (control response < 50ms) and mark the data packet "FAIL" field, realize millisecond level interception before yarn breakage; more importantly, the engine supports dynamic calibration - when the average of 5 consecutive detection angles is more than the threshold value ± 0.5°, automatically reverse correct the twist coefficient K value (such as K = 0.86→0.84), make the process parameter library continuously evolve, and the batch detection qualified rate is improved to 99.9%.

[0027] According to some embodiments of the present application, the data interaction module 7 embeds an encryption chip that uses AES-256 encryption for exported data. The AES-256 encryption chip and the aforementioned data interaction module 7 build a military-level data fortress: through the hardware-level encryption engine, the exported data (including angle values, twist conversion results, etc.) is real-time implemented with 256-bit key confusion (16 bytes processed per millisecond), making the process core parameter anti-brute force cracking strength reach 10^38 orders of magnitude, completely eliminating the risk of leakage caused by U disk copying; more importantly, the chip is physically connected to the storage unit 72 (inherited from the above), and real-time detection data stream is encrypted frame by frame (such as "batch YN202407001: 28.5°→ ciphertext 7F3A9E"), even if the WiFi transmission is intercepted (associated with the three module interfaces above), the ciphertext still meets the ISO / IEC 18033-3 standard, ensuring that the twist process parameters of the textile enterprise are zero leakage. This design takes a nanosecond level delay cost (<0.1ms), in exchange for process data encryption throughout its life cycle, meeting the audit-level security requirements of detection data for foreign trade orders.

[0028] According to some embodiments of the present application, the magnetic sensitive circuit board 32 is a digital Hall sensor. The digital Hall sensor is the core of the magnetic sensitive circuit board 32, which builds a milliradian level detection base: its ±0.1 mT magnetic field sensitivity (calibrated according to ISO17025) converts the micro deflection (≥0.5°) of the tension rod 2 into a non-hysteresis digital signal, and the resolution is 10 times higher than that of the traditional potentiometer sensor; the wide temperature drift suppression (-40°C~125°C) (thermal drift <100ppm / °C) ensures the full-time precision fluctuation <±0.1° in the high temperature and high humidity environment of the textile workshop, completely solves the problem of metal pointer thermal expansion and cold contraction jamming; more importantly, the non-contact detection mechanism naturally isolates the yarn fiber dust (inherited from the shielding shell protection), and the service life breaks through 50,000 hours under the IP65 protection level, and the maintenance cost is lower than that of the optical encoder, providing a maintenance-free sensing core for the twist meter.

[0029] According to some embodiments of the present application, the digital angle sensing assembly 3 includes a shielding shell, the bottom of which is provided with a flange structure 6 fixedly connected with the mounting bracket 12. The shielding shell is designed to build a three-dimensional protective fortress: the permalloy shell forms a closed magnetic shielding layer, attenuates the electromagnetic interference of the test motor 14 carbon brush spark by >40dB, and ensures the stability of the Hall sensor signal to ±0.1°; the bottom flange structure 66 is rigidly connected with the mounting bracket 1212 through bolts (shear force >500N), which completely eliminates the risk of micro displacement under high tension of the yarn, and the reliability is improved by 3 times compared with the traditional buckle fixing method; more importantly, the integrated sealing design of the shell and the flange (IP67 protection level) blocks the invasion of fiber dust through the silica gel gasket and the labyrinth channel, completely solves the problem of open pointer mechanism jamming, and realizes 50,000 hours of maintenance-free operation in the high-pollution environment of the textile workshop, and the comprehensive performance of the equipment is improved.

[0030] According to some embodiments of the present invention, the touch screen control device is provided with a graphical parameter configuration interface. This graphical parameter configuration interface, integrated into the touch screen control device, significantly enhances operational intelligence and process adaptability, enabling precise configuration and dynamic optimization of textile process parameters with zero-code operation. This shifts high-count yarn twist detection from "experience-based" to "data-driven," improving the efficiency of human-machine collaboration. Among them, the preset parameters of the storage unit 72 are directly called through a visual menu (such as the yarn type, linear density, and standard twist value option tree), completely eliminating the 15% manual input error rate, and the single parameter setting time is compressed from 3 minutes to 5 seconds; after entering the yarn linear density, the national standard algorithm (such as the GB / T 2543 cotton yarn formula) is automatically associated, and the abstract standard twist value is converted into an angle offset threshold (such as 32T / m→28.5°) in real time, eliminating the conversion error caused by manual table lookup; the angle-twist relationship curve is dynamically displayed on the interface, and finger sliding fine-tuning of the alarm threshold (±0.5° level accuracy) is supported, which improves the efficiency of process parameter adaptation; when the limit is exceeded, the interface automatically triggers a red light flashing alarm, and the PLC is linked to an emergency stop of the test motor 14 within 50ms, building an integrated closed loop of "parameter configuration-real-time monitoring-active protection", and the batch inspection pass rate is increased to 99.9%.

[0031] The embodiment is described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiment. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the present invention.

Claims

1. An intelligent twist meter based on PLC control system and touch screen, characterized in that: include: The twist meter body (1) comprises a base (10), a mounting frame (12) and a test motor (14) mounted on the base (10), a digital angle sensor assembly (3) rotatably connected to the mounting frame (12), a rotatable tension rod (2) provided on the digital angle sensor assembly (3), a fixed hook (15) for clamping yarn fixedly connected to the end of a motor shaft (141) fixedly connected to the test motor (14), a clamping assembly (5) fixedly mounted on one end of the tension rod (2) away from the mounting frame (12), and the clamping assembly (5) comprises two clamping plates (51) arranged in a horizontal direction, and the two clamping plates (51) are pressed against each other; The digital angle sensor assembly (3) includes a rotating shaft (4), a built-in magnet (31) and a magnetically sensitive circuit board (32); one end of the tension rod (2) away from the clamping assembly (5) is fixedly mounted on the rotating shaft (4); the magnet (31) is embedded in the rotating shaft (4); and the magnetically sensitive circuit board (32) and the magnet (31) are non-contact aligned for detection; A mobile platform (8) comprises a base frame (81) and a driving device (82) arranged along the length direction of the base frame (81), wherein the driving device (82) comprises a ball screw and a bearing seat (83) for mounting the ball screw, a servo motor (84) is connected to one end of the ball screw, a sliding nut is screwed onto the ball screw, a slider (85) is mounted on the sliding nut, and the test motor (14) is mounted on the slider (85); A PLC controller (86) for collaboratively controlling motor motion and angle signal acquisition, and electrically connecting the test motor (14), the servo motor (84) and the magnetic sensitive circuit board (32); A touch screen control device (9) for displaying the real-time rotation angle of the output tension rod (2), integrating parameter input, data display and alarm functions, and being communicatively connected to the PLC controller (86); A data interaction module (7) is electrically connected to the magnetic sensitive circuit board (32) and the PLC controller (86); and comprises: A data transmission interface (71), supporting the import of test parameters and the export of test data, is integrated into the data interaction module (7); The storage unit (72) stores preset yarn type parameters and real-time detection data.

2. The intelligent twist meter based on a PLC control system and a touch screen according to claim 1, characterized in that: The rotating shaft (4) is a stepped shaft structure, comprising a first step arranged inside the digital angle sensor assembly (3) and a second step connected to the tension rod (2); the magnet (31) is embedded in the bottom of the first step; the cross section of the second step is square; and the tension rod (2) is provided with a square hole that matches the second step.

3. The intelligent twist meter based on a PLC control system and a touch screen according to claim 1, characterized in that: The data transmission interface (71) is at least one of a USB Type-C, RS485 or WiFi module.

4. The intelligent twist meter based on a PLC control system and a touch screen according to claim 1, characterized in that: The test parameters include yarn linear density, standard twist value, and test number threshold.

5. The intelligent twist meter based on a PLC control system and a touch screen according to claim 1, characterized in that: The data interaction module (7) is integrated with a parameter parsing engine that converts the imported test parameters into tension rod angle offset thresholds.

6. The intelligent twist meter based on a PLC control system and a touch screen according to claim 1, characterized in that: The data interaction module (7) is embedded with an encryption chip that uses AES-256 to encrypt the exported data.

7. The intelligent twist meter based on a PLC control system and a touch screen according to claim 1, characterized in that: The magnetic sensitive circuit board (32) is a digital Hall sensor.

8. The intelligent twist meter based on a PLC control system and a touch screen according to claim 1, characterized in that: The digital angle sensor assembly (3) comprises a shielding shell, and a flange structure (6) fixedly connected to the mounting frame (12) is provided at the bottom of the shielding shell.

9. The intelligent twist meter based on a PLC control system and a touch screen according to claim 1, characterized in that: The touch screen control device (9) is provided with a graphical parameter configuration interface.

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