System for monitoring a drafting unit of a fabric spinning machine

Abstract

The utility model discloses a system (500) for monitoring a plurality of draft units (100) of a fabric spinning machine (1), which includes hoses, monitoring units and a control system. The hoses (L1, L2, L3, L4, R1, R2, R3, R4) are configured to receive an inert fluid in order to maintain a desired contact pressure between the top roller (9) and the bottom roller (10). The monitoring units (31, 32, 33, 34, 35, 36, 37, 38) are mounted on each hose and comprise a sensor (13), an identification tag storing the position of each sensor and a microcontroller. The sensor continuously senses the pressure of the fluid and generates a signal in real time. The monitoring unit detects the faulty hose based on the comparison of the sensed signal with predetermined limits. The control system is in electronic communication with each monitoring unit to identify and locate the faulty hose and to stop the operation of the top arm assembly (11) corresponding to the faulty hose.

Description

Technical Field

[0001] This invention relates to a fabric spinning machine. More specifically, this invention relates to a system for monitoring multiple drafting units of a fabric spinning machine. Background Technology

[0002] In a textile spinning mill, cotton is transformed into yarn through a series of machines. The ring spinning machine is the yarn-producing machine and plays a crucial role in the textile spinning mill. The textile roving material produced by the roving frame is typically fed into the ring spinning machine. The ring spinning machine delivers cotton (called yarn) as the final stage of the spinning process. The supplied roving material is drafted using a drafting device. Further, the drafted fibers are spun into yarn using a ring and traveler device. The spun yarn is then further wound onto weft tubes, which are placed on spindles. The drafting device consists of a rubber top roller and a metal bottom roller. The top roller is loaded above the bottom roller and is used to draft the supplied roving material.

[0003] In existing drafting units of ring spinning machines, the top roller is loaded above the bottom roller by means of a pneumatically loaded or spring-loaded top arm mechanism. The pneumatically loaded top arm mechanism is designed to apply controlled pressure to the top arm of the drafting unit. This is necessary to ensure proper yarn tension, which improves the overall quality of the produced yarn. The pneumatically loaded top arm mechanism consists of a pneumatic controller / compressed air source that applies pressure to each top arm via multiple pressure hoses. The pressure hoses are filled with pressurized air. A single pressure hose is assigned to load 12 top arms or 24 spindles to apply load to the top arm. The pressure controller or centralized pressure source is connected to a pressure regulator, which allows the operator to adjust the amount of pressure applied to the top arm based on the specific requirements of the spinning process, the length of the spinning machine, and the number of top arms. The number of pressure hoses varies with the number of spindles in the ring spinning machine. For example, for a machine with 1200 spindles, approximately 50 rubber pressure hoses are required. A centralized pressurized air source supplies pressurized air to 50 pressure hoses via a pneumatic circuit. A single pressure regulator is incorporated to maintain the necessary pressure throughout the machine.

[0004] A major drawback of existing drafting systems is the leakage of pressurized air through pressure hoses, typically made of rubber. This leakage results in a loss of compressed air pressure within the hoses. This pressure loss affects the performance of existing drafting systems. Leaks can occur due to wear, damage, or improper installation of the pressure hoses. Rubber pressure hoses deteriorate over time due to the pressurized air becoming too dry. This dryness causes premature hose failure. Furthermore, the dry pressurized air can lead to hose rupture, which in turn becomes a source of leakage.

[0005] Figure 1 illustrates a conventional fabric spinning machine in which each pressure hose 12 is supplied with oxygen-containing pressurized air via an oxygen source 40. The pressure in hoses L1, L2, L3, L4, R1, R2, R3, and R4 is controlled and varied by means of a pressure switch 52. Each pressure hose 12 is connected to a circuit via a connector 15. Atmosphere has a high affinity for moisture in the form of water vapor. This affinity for moisture affects the lifespan of the pressure hoses and leads to oxidation of the rubber material. Furthermore, the elasticity of the pressure hoses decreases, making them brittle. In addition, the metal parts of the machine are corroded due to the reaction between moisture and oxygen present in the air. Moreover, the textile environment is more prone to generating higher heat, which reduces the rate of heat dissipation when using pressurized atmosphere.

[0006] In the event of a leak in a single pressure hose, the air pressure connected through the hose needs to be increased to maintain the desired load in the top arm of the traction unit. Furthermore, locating a specific point of failure within the pressure hose is difficult. Identifying the faulty hose is a time-consuming process. Moreover, locating / identifying the faulty hose requires a thorough inspection of the top arm, making accurately pinpointing the location of the failure due to a leak in pressurized air challenging.

[0007] Therefore, there is a need for a system for monitoring multiple drafting units of a fabric spinning machine that at least overcomes the shortcomings of existing drafting devices. Utility Model Content

[0008] One object of this invention is to provide a system for monitoring multiple drafting units of a fabric spinning machine system, which facilitates the detection of defective hoses.

[0009] Another objective of this invention is to provide a system for monitoring multiple drafting units of a fabric spinning machine system, which facilitates reducing machine downtime.

[0010] Another object of this invention is to provide a system for monitoring multiple drafting units of a fabric spinning machine system, which provides improved heat dissipation.

[0011] Another objective of this invention is to provide a system for monitoring multiple drafting units in a fabric spinning machine system, which provides increased service life and reduced maintenance frequency.

[0012] The purpose of this invention is not limited to the problems described above. Other technical problems not mentioned in the following description will become apparent to those skilled in the art.

[0013] In this regard, before detailing the current embodiment of the system for monitoring multiple drafting units, it should be understood that the system is not limited in its application to the details of the construction and arrangement of the components illustrated in the following description or figures. Those skilled in the art will understand that the concepts of this invention can readily serve as the basis for designing other structures and systems for monitoring multiple drafting units of a fabric spinning machine.

[0014] According to one aspect of the present invention, a system for monitoring multiple drawing units includes hoses, monitoring units, and a control system. The hoses are disposed in each drawing unit and are configured to receive an inert fluid to maintain a desired contact pressure between multiple top rolls and multiple bottom rolls via top arm assemblies disposed therein. Monitoring units are mounted on each hose. Each monitoring unit includes a sensor, an identification tag, and a microcontroller. The sensor is mounted on the hose and is configured to continuously sense the pressure of the fluid and generate a signal corresponding to the sensed pressure value in real time. The identification tag is configured to identify and store the location of each sensor corresponding to each drawing unit. The microcontroller is configured to receive the sensed signals from the sensors and compare the values ​​of the sensed signals with predetermined limits in real time. The microcontroller is configured to detect a faulty hose based on the comparison of the sensed signals with the predetermined limits. The control system, configured to electronically communicate with each monitoring unit, receives the identification and location of the faulty hose from the microcontroller to stop the operation of the top arm assembly corresponding to the faulty hose.

[0015] In one embodiment, each hose is in fluid communication with a pressurized inert fluid reservoir via a separate conduit, and the flow of inert fluid into the hose is controlled by a switch.

[0016] In one embodiment, each hose includes at least one fitting, and the hose is connected to a pressure circuit via the fitting.

[0017] In one embodiment, the inert fluid is nitrogen.

[0018] In one embodiment, the monitoring unit further includes: a signal conditioning unit connected to the sensor to convert the signal from the sensor into a higher-level electrical signal; an analog-to-digital converter configured to receive the conditioned higher-level signal from the signal conditioning unit and convert it into a digital signal; an radio frequency transmitter configured to receive the digital signal from the analog-to-digital converter and transmit the digital signal to a radio frequency receiver coupled to a microcontroller to identify the faulty hose; and a power supply unit configured to supply power to each monitoring unit.

[0019] In one embodiment, the system further includes a display device configured to receive and display in real time the pressure value of each of the corresponding hose and the identified faulty hose.

[0020] In one embodiment, the display device is configured to generate an audible, visual, or audiovisual alarm to indicate a faulty hose.

[0021] In one embodiment, the control system is configured to generate a signal to displace the top arm assembly of each faulty hose from an engaged position to a disengaged position, thereby stopping contact between the top roller and the bottom roller.

[0022] In one embodiment, the sensor is removably attached to a hose.

[0023] In one embodiment, the fabric spinning machine is selected from the group consisting of ring spinning machines, compact spinning machines, air-jet spinning machines, and roving machines.

[0024] Other aspects and advantages of this invention will become apparent from the following description taken in conjunction with the accompanying drawings, which exemplify the principles of the invention by way of example. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0026] Figure 1 illustrates an existing pneumatic device for loading pressure hoses in a textile ring spinning machine;

[0027] Figure 2 A side view of a ring spinning machine according to the present invention is shown;

[0028] Figure 3 A side view of the drafting unit of a ring spinning machine according to the present invention is shown;

[0029] Figure 4 An example of a system for monitoring performance parameters of the drafting unit of a fabric spinning machine according to an embodiment of the present invention is illustrated, wherein each hose has an individual sensor;

[0030] Figure 5 Another embodiment of a system for monitoring performance parameters of the drafting unit of a fabric spinning machine system is illustrated, wherein each of the first and second sides of the fabric spinning machine has a single sensor; and

[0031] Figure 6 Another embodiment of a system for monitoring performance parameters of the drafting unit of a fabric spinning machine is illustrated, which has removable sensors.

[0032] In all the accompanying drawings, it should be noted that the same reference numerals are used to describe the same or similar elements, features and structures. Detailed Implementation

[0033] The following description, provided with reference to the accompanying drawings, is intended to aid in a full understanding of the present invention as defined therein. It includes various specific details to aid understanding, but these details should be considered merely exemplary. Furthermore, for clarity and brevity, descriptions of well-known functions and constructions have been omitted.

[0034] The terms and words used in the following description are not limited to their bibliographical meanings, but are used solely by the inventors to ensure a clear and consistent understanding of the present invention. Therefore, it should be understood by those skilled in the art that the following description of the present invention is for illustrative purposes only.

[0035] It should be understood that the singular forms “one,” “a,” and “the” include plural references unless the context clearly indicates otherwise.

[0036] refer to Figures 2 to 6 The system 500 described herein is for monitoring the performance parameters of the drafting unit 100 of the fabric spinning machine 1.

[0037] Figure 2 A side view of a ring spinning machine 1 is shown, according to which roving is supplied from roving bobbins 3 in a roving frame 2. The supplied roving is passed to a drafting assembly 4 by means of a condenser. The roving is drafted in the drafting assembly 4. The drafting assembly 4 includes drafting units 100. Each drafting unit 100 includes a plurality of top rollers 9 and a plurality of bottom rollers 10. In one embodiment, the plurality of top rollers 9 are rubber weft rollers, and the plurality of bottom rollers 10 are grooved bottom rollers. The plurality of top rollers 9 are arranged above the plurality of bottom rollers 10 by means of a top arm assembly 11. The linear density of the roving is reduced by changing the speed of the plurality of top rollers 9 and the plurality of bottom rollers 10. The drafted roving further passes through a yarn guide 6 to a ring and traveler 5. Twist is introduced into the roving fiber bundle by means of the ring and traveler 5. The twisted fiber bundle of the roving is called yarn. The yarn is further wound on a weft tube, which is placed on one of a plurality of spindles 7. Each of the multiple spindles 7 is located on its corresponding spindle track 8.

[0038] In the drafting unit, pressure is provided to the top arm assembly 11 via pressure point / rod 14, which transmits the load from the pressure hose 12 to apply a desired contact pressure value between the plurality of top rollers 9 and the plurality of bottom rollers 10, thereby achieving the desired fiber quality. Figure 3 This arrangement of the drafting unit in a textile ring spinning machine according to the present invention is shown.

[0039] The system 500 of this utility model includes hoses L1, L2, L3, L4, R1, R2, R3, R4, monitoring units 31, 32, 33, 34, 35, 36, 37, 38 and a control system (not shown in the figure). Figure 4 Such a system is shown in the figure.

[0040] Hose L1, L2, L3, L4, R1, R2, R3, R4 are disposed in each drawing unit 100. In this specification, hoses are referred to by reference numeral 12 or L1, L2, L3, L4, R1, R2, R3, R4. Hose L1, L2, L3, L4, R1, R2, R3, R4 are configured to receive an inert fluid to maintain a desired contact pressure between the plurality of top rollers 9 and the plurality of bottom rollers 10 of each drawing unit 100 via a top arm assembly 11 disposed in the hose. In one embodiment, the inert fluid is nitrogen. A pressure point / rod 14 connects the hoses L1, L2, L3, L4, R1, R2, R3, R4 and the top arm assembly 11. The pressure point / rod 14 connects the hoses L1, L2, L3, L4, R1, R2, R3, R4 and the top arm assembly 11. The pressure point / rod 14 facilitates the displacement of the top arm assembly 11 relative to the hose 12.

[0041] Monitoring units 31, 32, 33, 34, 35, 36, 37, and 38 are installed on each of the hoses L1, L2, L3, L4, R1, R2, R3, and R4. The monitoring units 31, 32, 33, 34, 35, 36, 37, and 38 are located adjacent to connector 15, through which the inert fluid enters the hose 12. Each monitoring unit 31, 32, 33, 34, 35, 36, 37, and 38 includes a sensor 13, an identification tag, and a microcontroller.

[0042] Sensor 13 is mounted on hoses L1, L2, L3, L4, R1, R2, R3, and R4. Sensor 13 is configured to continuously sense the performance parameters of the inert fluid present in hoses L1, L2, L3, L4, R1, R2, R3, and R4, and generate signals corresponding to the sensed performance parameters in real time. Figures 4 to 6 In the illustrated embodiment, sensor 13 is configured to continuously sense the pressure of the inert fluid and generate a signal corresponding to the sensed pressure value in real time.

[0043] The identification tag is configured to identify and store the position of each sensor 13 corresponding to each drafting unit 100. In particular, the identification tag is configured to identify and store the position of each sensor 13 corresponding to each hose L1, L2, L3, L4, R1, R2, R3, R4 of the drafting unit 100.

[0044] The microcontroller is configured to receive sensing signals from sensor 13 and compare the values ​​of the sensing signals with predetermined limits in real time. More specifically, the microcontroller is configured to receive sensing signals from each of the sensors 13 and compare the values ​​of the sensing signals with predetermined limits in real time. The microcontroller is configured to detect faulty hoses L1, L2, L3, L4, R1, R2, R3, and R4 based on the comparison of the sensing signal values ​​with predetermined limits. In one embodiment, the microcontroller is connected to a factory monitoring system and operated remotely via a wired or wireless interface.

[0045] The control system is configured to communicate electronically with each of the monitoring units 31, 32, 33, 34, 35, 36, 37, and 38. The microcontroller sends the identification and location of one or more faulty hoses L1, L2, L3, L4, R1, R2, R3, and R4 to the control system to stop the operation of the top arm assembly 100 corresponding to the faulty hoses L1, L2, L3, L4, R1, R2, R3, and R4. The control system is configured to generate a signal to displace the top arm assembly 11 of each faulty hose L1, L2, L3, L4, R1, R2, R3, and R4 from an engaged position to a disengaged position, thereby stopping contact between the multiple top rollers 9 and the multiple bottom rollers 10.

[0046] Each monitoring unit 31, 32, 33, 34, 35, 36, 37, and 38 also includes a signal conditioning unit, an analog-to-digital converter (ADC), an RF transmitter, an RF receiver, and a power supply unit. The signal conditioning unit is connected to sensor 13 to convert the signal from sensor 13 into a higher-level electrical signal. The ADC is configured to receive the conditioned higher-level signal from the signal conditioning unit and convert it into a digital signal. The RF transmitter is configured to receive the digital signal from the ADC and transmit it to an RF receiver connected to a microcontroller for identifying faulty hoses. The power supply unit is configured to supply power to each monitoring unit 31, 32, 33, 34, 35, 36, 37, and 38.

[0047] System 500 also includes a display (i.e., a human-machine interface) configured to receive and display in real time the pressure values ​​of each of the corresponding hoses L1, L2, L3, L4, R1, R2, R3, R4, and the identified faulty hoses L1, L2, L3, L4, R1, R2, R3, R4. Real-time display of performance parameter values ​​facilitates monitoring by supervisors. Each monitoring unit 31, 32, 33, 34, 35, 36, 37, 38 is independently identified and monitored in real time to prevent the reception of erroneous data from adjacent spinning machines 1. The display device is configured to generate audible, visual, or audiovisual alarms to indicate faulty hoses L1, L2, L3, L4, R1, R2, R3, R4. A warning is generated whenever the pressure in hoses L1, L2, L3, L4, R1, R2, R3, R4 exceeds a threshold or in the event of a sudden change in pressure.

[0048] In such Figure 5 In another embodiment shown, the fabric spinning machine 1 has a first side and a second side. Each of the first and second sides has a single monitoring unit 31, 35 with a sensor 13, instead of each hose L1, L2, L3, L4, R1, R2, R3, R4 having a separate single sensor 13 as described in other embodiments. The sensor 13 is built into the monitoring unit 31, 35 to monitor the performance parameters of the fluid. In this embodiment, the number of sensors 13 is reduced. This eliminates the use of multiple sensors 13 and provides simplicity by indicating a fault from either the first or second side of the fabric spinning machine 1.

[0049] In such Figure 6 In another embodiment shown, each sensor 13 is removably attached to hoses L1, L2, L3, L4, R1, R2, R3, R4. This facilitates easy removal of the sensor 13 without removing the corresponding hoses L1, L2, L3, L4, R1, R2, R3, R4 from the stretching unit 100. The pressure sensor 13 is also positioned so that it can be easily removed and replaced, or charged without removing the entire pressure hose. Installation on the pressure hose is important because the sensor is wireless and battery replacement is easy.

[0050] In one embodiment, the sensed performance parameters are selected from the group consisting of pressure, temperature, and humidity.

[0051] In one embodiment, sensor 13 is selected from the group consisting of a pressure sensor, a temperature sensor, and a humidity sensor.

[0052] In one embodiment, sensor 13 is selected from the group consisting of wired or wireless sensors.

[0053] In such Figure 4 In the illustrated embodiment, each hose L1, L2, L3, L4, R1, R2, R3, R4 is in fluid communication with the pressurized inert fluid reservoir 50 via a separate pipe, and the flow of inert fluid to the hoses L1, L2, L3, L4, R1, R2, R3, R4 is controlled by switch 52.

[0054] In one embodiment, the pressurized inert fluid reservoir 50 is a high-pressure nitrogen reservoir 50.

[0055] In such Figure 5 and Figure 6 In the illustrated embodiment, each hose 12 includes a connector 15, and hoses L1, L2, L3, L4, R1, R2, R3, and R4 are interconnected by a pressure circuit via the connectors.

[0056] In another embodiment, each drawing unit 100 is in fluid communication with an inert gas. Since the inert gas is non-reactive, damage to the metal surfaces of the hoses L1, L2, L3, L4, R1, R2, R3, R4 made of rubber material and the fabric spinning machine 1 is prevented. The inert gas (such as nitrogen) has a larger molecular size than oxygen, which has a smaller molecular size. Furthermore, nitrogen has a lower permeability, which allows the desired pressure to be maintained in the hoses L1, L2, L3, L4, R1, R2, R3, R4 for a longer duration.

[0057] In one embodiment, the fabric spinning machine 1 is selected from the group consisting of a ring spinning machine, a compact spinning machine, an air-jet spinning machine, and a roving machine.

[0058] In one embodiment, the control system is configured to operate remotely via any wired or wireless interface.

[0059] In a spinning machine, the desired contact pressure between multiple top rollers 9 and multiple bottom rollers 10 is necessary to achieve the desired fiber quality. This invention provides a system 500 that facilitates maintaining the desired contact pressure between the multiple top rollers 9 and multiple bottom rollers 10, thus ensuring the desired fiber quality. System 500 also facilitates fault detection, typically in the form of pressure drop or fluid leakage through hoses L1, L2, L3, L4, R1, R2, R3, R4. A monitoring unit with sensors, identification tags, and a microcontroller helps identify faulty hoses L1, L2, L3, L4, R1, R2, R3, R4, because each sensor 13 has a different identification tag corresponding to one of the hoses L1, L2, L3, L4, R1, R2, R3, R4. Furthermore, the control system facilitates automatic or manual lifting of the top arm assembly 11 of the faulty hoses L1, L2, L3, L4, R1, R2, R3, and R4, and also provides prompts via a human-machine interface for corrective actions on the faulty hoses L1, L2, L3, L4, R1, R2, R3, and R4. Corrective actions typically take the form of replacing or repairing the faulty hoses L1, L2, L3, L4, R1, R2, R3, and R4. The display facilitates real-time visual monitoring and indication of the performance parameters of the hoses L1, L2, L3, L4, R1, R2, R3, and R4.

[0060] This eliminates the need to stop the operation of the remaining hoses L1, L2, L3, L4, R1, R2, R3, and R4 when they are functioning without any faults. This reduces machine downtime and increases productivity. Therefore, due to the system 500 of this invention, the total service life of hoses L1, L2, L3, L4, R1, R2, R3, and R4 is increased. Moreover, system 500 facilitates the reduction of the carbon footprint in textile spinning machines.

[0061] Although various aspects of the present invention have been specifically shown and described with reference to the foregoing embodiments, those skilled in the art will understand that various additional embodiments can be conceived through modifications to the disclosed machines, systems, and methods without departing from the spirit and scope of the disclosure. These embodiments should be understood to fall within the scope of the present invention as defined by the claims and any equivalents.

[0062] List of reference numerals

[0063] 500 system

[0064] 100 drawing units

[0065] 52 switches

[0066] 50 Nitrogen Storage

[0067] 40 Oxygen sources for existing machines

[0068] Monitoring units 31, 32, 33, 34, 35, 36, 37, and 38

[0069] 15 connectors

[0070] 14 pressure points / rod

[0071] 12. L1, L2, L3, L4, R1, R2, R3, R4 hoses

[0072] 13 sensors

[0073] 11 top arm assembly

[0074] More than 10 bottom rollers

[0075] More than 9 top rollers

[0076] 8-spindle track

[0077] 7 spindles

[0078] 6 yarn guides

[0079] 5 steel wire rings

[0080] 4 drawing components

[0081] 3. Roving bobbin

[0082] 2 roving frame

[0083] 1. Fabric spinning machine

Claims

1. A system for monitoring the drafting unit of a fabric spinning machine, characterized in that, The system (500) includes: - Hose (L1, L2, L3, L4, R1, R2, R3, R4), which are disposed in each of the drawing units (100), the hose (L1, L2, L3, L4, R1, R2, R3, R4) are configured to receive inert fluid so as to maintain a desired contact pressure between the plurality of top rollers (9) and the plurality of bottom rollers (10) by means of the top arm assembly (11) disposed in the hose; - Monitoring units (31, 32, 33, 34, 35, 36, 37, 38), which are installed on each of the aforementioned hoses (L1, L2, L3, L4, R1, R2, R3, R4), and each of the aforementioned monitoring units (31, 32, 33, 34, 35, 36, 37, 38) includes: • A sensor (13) is mounted on the hose (L1, L2, L3, L4, R1, R2, R3, R4), the sensor (13) being configured to continuously sense the pressure of the fluid and generate a signal corresponding to the sensed pressure value in real time; • Identification tags, which are configured to identify and store the positions of the respective sensors (13) corresponding to each of the respective stretching units (100); • A microcontroller configured to receive sensing signals from the sensor (13) and compare the values ​​of the sensing signals with predetermined limits in real time, the microcontroller being configured to detect faulty hoses (L1, L2, L3, L4, R1, R2, R3, R4) based on the comparison of the sensing signals with the predetermined limits; and - A control system configured to communicate electronically with each of the monitoring units (31, 32, 33, 34, 35, 36, 37, 38) and receive from the microcontroller the identification and location of the faulty hoses (L1, L2, L3, L4, R1, R2, R3, R4) to stop the operation of the top arm assembly (11) corresponding to the faulty hoses (L1, L2, L3, L4, R1, R2, R3, R4).

2. The system for monitoring the drafting unit of a fabric spinning machine according to claim 1, characterized in that, Each of the hoses (L1, L2, L3, L4, R1, R2, R3, R4) is in fluid communication with a pressurized inert fluid reservoir (50) via a separate pipe, and the flow of inert fluid to the hoses (L1, L2, L3, L4, R1, R2, R3, R4) is controlled by a switch (52).

3. The system for monitoring the drafting unit of a fabric spinning machine according to claim 1, characterized in that, Each of the hoses includes at least one connector (15), and the hose is connected to a pressure circuit through the connector.

4. The system for monitoring the drafting unit of a fabric spinning machine according to claim 1, characterized in that, The inert fluid is nitrogen.

5. The system for monitoring the drafting unit of a fabric spinning machine according to claim 1, characterized in that, The monitoring units (31, 32, 33, 34, 35, 36, 37, 38) also include: A signal conditioning unit, which is connected to the sensor (13) to convert the signal from the sensor (13) into a higher level electrical signal; An analog-to-digital converter is configured to receive a regulated higher-level signal from the signal conditioning unit and convert the signal into a digital signal; An RF transmitter configured to receive the digital signal from the analog-to-digital converter and transmit the digital signal to an RF receiver coupled to a microcontroller to identify the faulty hose; and A power supply unit is configured to supply power to each of the monitoring units (31, 32, 33, 34, 35, 36, 37, 38).

6. The system for monitoring the drafting unit of a fabric spinning machine according to claim 1, characterized in that, It also includes a display device configured to receive and display in real time the pressure value of each of the corresponding hoses (L1, L2, L3, L4, R1, R2, R3, R4) and the identified faulty hoses (L1, L2, L3, L4, R1, R2, R3, R4).

7. The system for monitoring the drafting unit of a fabric spinning machine according to claim 6, characterized in that, The display device is configured to generate audible, visual, or audiovisual alarms to indicate the faulty hoses (L1, L2, L3, L4, R1, R2, R3, R4).

8. The system for monitoring the drafting unit of a fabric spinning machine according to claim 1, characterized in that, The control system is configured to generate a signal to displace the top arm assembly (11) of each faulty hose from the engaged position to the disengaged position, thereby stopping the contact between the top roller (9) and the bottom roller (10).

9. The system for monitoring the drafting unit of a fabric spinning machine according to claim 1, characterized in that, The sensor (13) is removably attached to the hose (L1, L2, L3, L4, R1, R2, R3, R4).

10. The system for monitoring the drafting unit of a fabric spinning machine according to claim 1, characterized in that, The fabric spinning machine (1) is selected from ring spinning machines, compact spinning machines, air-jet spinning machines and roving machines.

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