Visual sensor cable for industrial robot and use method

Abstract

The invention discloses a visual sensor cable for an industrial robot and a use method. The cable comprises a photonic crystal fiber body, a polymer coating, a protective layer and an anti-bending device, the anti-bending device comprises a pressure sensor and a supporting deformation mechanism; according to the cable using method, the pressure sensor is used for sensing the change of externally applied bending pressure, when the bending pressure is larger than or equal to a preset value, the pressure sensor triggers the supporting deformation mechanism to be electrically connected with an external power source, and when the supporting deformation mechanism is powered on, the resistance is increased, the temperature is increased, and the supporting deformation mechanism is made to be straightened and hardened; when the bending pressure is smaller than a preset value, the pressure sensor triggers the supporting deformation mechanism to be electrically disconnected with the external power supply, the temperature of the supporting deformation mechanism is reduced, and the supporting deformation mechanism recovers to a soft state; according to the invention, the support is provided for the cable through the change of the shape of the support deformation mechanism after the support deformation mechanism is electrified, so that the cable is effectively prevented from being damaged or unstable in signal transmission due to excessive bending.

Description

Technical Field

[0001] The present application relates to the technical field of vision sensor cables, and in particular to a vision sensor cable for an industrial robot and a method of using the same. Background Art

[0002] At present, visual sensors in industrial robots generally use traditional metal conductor cables as signal transmission media; however, these traditional metal conductor cables have the disadvantages of low high-speed signal transmission efficiency and susceptibility to electromagnetic interference; at the same time, visual sensor cables have poor flexibility, and frequent bending can easily cause damage to the cable structure, reduce service life, and even cause cable breakage, thereby affecting the stability and reliability of signal transmission. Summary of the invention

[0003] In order to improve the defects of poor flexibility of vision sensor cables, which are easily damaged and broken due to frequent bending, the present application provides a vision sensor cable for an industrial robot and a method of use.

[0004] The present application provides a visual sensor cable for an industrial robot and a method of use thereof, which adopts the following technical solutions: A visual sensor cable for an industrial robot, comprising a photonic crystal fiber body, a polymer coating sleeved on the outer side wall of the photonic crystal fiber body, a protective layer sleeved on the outer side of the polymer coating, and an anti-bending device inserted in the protective layer and arranged along the length direction of the photonic crystal fiber body; The anti-bending device includes pressure sensors inserted into the protective layer and arranged in an array along the length direction of the photonic crystal fiber body, and a supporting deformation mechanism arranged along the length direction of the photonic crystal fiber body and electrically connected to the pressure sensors, and the pressure sensors are electrically connected to an external power supply.

[0005] By adopting the above technical solution, the pressure sensor is used to sense the change of bending pressure applied externally. When the bending pressure is greater than or equal to the preset value, the pressure sensor triggers the support deformation mechanism to be electrically connected to the external power supply. When the support deformation mechanism is energized, the resistance increases and the temperature rises, causing the support deformation mechanism to straighten and harden; when the bending pressure is less than the preset value, the pressure sensor triggers the support deformation mechanism to disconnect the electrical connection with the external power supply, the temperature of the support deformation mechanism decreases, and the support deformation mechanism returns to a soft state; the present application provides support for the cable by changing the shape of the support deformation mechanism after being energized, thereby effectively preventing the cable from being damaged or the signal transmission from being unstable due to excessive bending.

[0006] Preferably, an adhesive layer is provided between the plurality of photonic crystal fiber bodies, and the plurality of photonic crystal fiber bodies are arranged in parallel and closely attached to each other.

[0007] By adopting the above technical solution, the photonic crystal fiber body, as the core element of signal transmission, is fixed together by the adhesive layer, so that multiple photonic crystal fiber bodies maintain a stable relative position, avoiding relative movement and friction of the photonic crystal fiber bodies during use; the adhesive layer not only ensures the structural stability between the photonic crystal fiber bodies, but also improves the overall mechanical properties of the photonic crystal fiber bodies, which can effectively reduce the signal transmission interference inside the cable; at the same time, the parallel arranged photonic crystal fiber bodies help to optimize the transmission path of the optical signal, reduce signal attenuation, and enhance signal stability and transmission efficiency; the present application improves the anti-interference ability and signal transmission quality of the cable through the coordinated work of multiple photonic crystal fiber bodies, thereby improving the application performance of the cable in industrial robot vision sensors.

[0008] Preferably, a carbon fiber woven mesh is further provided between the protective layer and the polymer coating.

[0009] By adopting the above technical scheme, the carbon fiber woven mesh, as a reinforcing structure, provides additional mechanical strength and tensile resistance, and plays a supporting and protective role; the weaving structure of the carbon fiber woven mesh enables the carbon fiber woven mesh to evenly disperse the external load when the photonic crystal fiber body is subjected to external physical pressure or bending, thereby preventing damage caused by local excessive force; carbon fiber also has good anti-electromagnetic interference performance, which can effectively reduce the impact of external electromagnetic waves on signal transmission and ensure the stability of the signal; the combination of polymer coating and protective layer and the reinforcing effect of the carbon fiber woven mesh jointly improve the overall durability and compressive resistance of the cable, ensuring the long-term stable operation of the cable in complex industrial environments; the present application improves the cable's resistance to bending, tensile strength, and electromagnetic interference, effectively prolongs the cable's service life, and enhances the reliability and stability of signal transmission.

[0010] Preferably, the protective layer is provided with fixed cavities arranged in an array at intervals along the length direction of the photonic crystal fiber body, and strip holes arranged along the length direction of the protective layer, the pressure sensor is inserted in the fixed cavities, and the supporting deformation mechanism is inserted in the strip holes.

[0011] By adopting the above technical scheme, the pressure sensor is firmly fixed in the protective layer through the fixed cavity, and can stably sense the bending pressure applied from the outside; the supporting deformation mechanism is inserted in the strip hole, and responds to the external pressure change through the electrical connection with the pressure sensor, and provides deformation support to adjust the deformation of the photonic crystal fiber body, preventing the photonic crystal fiber body from excessive bending or breaking due to external force, thereby protecting the stability of signal transmission; the design of the fixed cavity and the strip hole ensures the stable position of each component in the protective layer, and can effectively transmit external forces, ensuring the reliability and durability of the cable under various mechanical loads.

[0012] Preferably, a plurality of the anti-bending devices are arranged in an array along the circumference of the protective layer.

[0013] By adopting the above technical solution, multiple anti-bending devices are distributed around the protective layer to form a uniform distribution structure to provide all-round support and protection; when external force acts on the cable, the anti-bending device can evenly disperse the pressure and bending stress applied to the protective layer, thereby preventing the photonic crystal fiber body from excessive bending or damage; each anti-bending device monitors the changes in external pressure in real time through a pressure sensor, and cooperates with the supporting deformation mechanism to ensure that the deformation of the cable is always within a controllable range to avoid interruption or instability of signal transmission; this array arrangement enables the cable to more effectively distribute mechanical forces when subjected to external forces of different directions and intensities, thereby improving the cable's anti-bending and anti-tensile properties, and enhancing the cable's durability and stability.

[0014] Preferably, the support deformation mechanism includes an energized deformation component, and an on-off control component electrically connected to the energized deformation component and an external power source respectively, and the on-off control component is electrically connected to the pressure sensor.

[0015] By adopting the above technical solution, when the pressure sensor senses the bending pressure applied from the outside, the corresponding electrical signal is transmitted to the on-off control component, and the on-off control component controls the on-off state of the energized deformation component according to the change of the pressure signal; when the externally applied pressure reaches a predetermined value, the on-off control component is started and the energized deformation component is energized, so that the energized deformation component is deformed, thereby adjusting the bending angle or shape of the photonic crystal fiber body, providing corresponding support, and preventing excessive bending or damage; the energized deformation component realizes precise adjustment of deformation through the control of electric current, so that the support effect is more flexible and precise, and can be automatically adjusted according to real-time pressure changes, ensuring the long-term stable operation of the cable; the present application enables the support deformation mechanism to respond to changes in the external environment in real time, and effectively protects the photonic crystal fiber body from the influence of external mechanical forces.

[0016] Preferably, the energized deformation component is a shape memory alloy.

[0017] By adopting the above technical solution, when the externally applied pressure is transmitted to the on-off control component through the pressure sensor and controls the energized deformation component to be energized, the shape memory alloy will deform due to the increase in temperature, adjust the curvature or shape of the photonic crystal fiber body, and provide support; the deformation characteristics of the shape memory alloy enable the energized deformation component to be adjusted in real time according to the actual pressure, not only providing strong support when the external pressure is large, but also returning to its original state after the pressure is reduced, thereby avoiding excessive deformation or stress concentration; the use of shape memory alloy improves the response speed and accuracy of the supporting deformation mechanism, and at the same time realizes flexible adjustment of deformation through energy-saving electrical control, which not only avoids mechanical damage, but also can maintain the structural stability of the photonic crystal fiber body under dynamic load, enhances the cable's resistance to bending, compression and stretching, thereby extending the service life of the cable and improving the stability and reliability of signal transmission.

[0018] Preferably, the polymer coating is a polyimide material.

[0019] By adopting the above technical solution, when the polyimide material is used as the polymer coating, the polymer coating can effectively protect the photonic crystal fiber body under various environmental conditions; the present application uses the polyimide material as the polymer coating, which can effectively improve the heat resistance, chemical corrosion resistance, and electromagnetic interference resistance of the cable, extend the service life of the cable, and improve its stability and reliability in industrial environments.

[0020] Preferably, the thickness of the polymer coating is 5µm-10µm.

[0021] By adopting the above technical solution, a polymer coating with a thickness of 5µm-10µm can provide sufficient protection while maintaining flexibility and adaptability. The thickness of 5µm-10µm can effectively isolate chemicals, dust and moisture in the external environment, and prevent electromagnetic interference from affecting the signal transmission inside the cable, ensuring the stability of the signal. The softness and bendability of the polymer coating are also guaranteed, and the cable will not be stiff and inconvenient to bend due to being too thick, nor will it be unable to provide sufficient mechanical protection due to being too thin. The visual sensor cable can work reliably in complex industrial environments, improving the stability, durability and adaptability of the overall cable.

[0022] A method for using a visual sensor cable for an industrial robot, comprising the visual sensor cable for an industrial robot, wherein the support deformation mechanism comprises an energized deformation component, and an on-off control component electrically connected to the energized deformation component and an external power supply, respectively, and further comprising the following steps: S1: When the photonic crystal fiber body is bent, the protective layer applies pressure to the pressure sensor; S2: When the pressure detected by the pressure sensor is greater than or equal to a preset value, the pressure sensor triggers the on-off control component to electrically connect the energized deformation component to an external power source; S3: When the energized deformation component is energized, the resistance increases, the temperature rises, and the energized deformation component straightens and hardens; S4: When the pressure detected by the pressure sensor is less than a preset value, the pressure sensor triggers the on-off control component to disconnect the energized deformation component from the external power supply; S5: When the energized deformation component is powered off, the temperature decreases and the energized deformation component returns to a soft state.

[0023] By adopting the above technical solution, when the bending pressure detected by the pressure sensor is greater than or equal to the preset value, the pressure sensor triggers the on-off control component, thereby electrically connecting the energized deformation component to the external power supply; due to the passage of current, the temperature of the energized deformation component increases, and the shape memory alloy material straightens and hardens, providing support to prevent the photonic crystal fiber body from further bending; when the pressure sensor detects that the pressure is less than the preset value, the pressure sensor will trigger the on-off control component again to disconnect the energized deformation component from the power supply, and the temperature of the energized deformation component will decrease and return to a soft state, thereby reducing the rigidity of the cable and improving its flexibility; the present application detects changes in external pressure and adjusts the support state of the cable in real time to avoid damage to the photonic crystal fiber body due to excessive bending.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. A visual sensor cable for an industrial robot, wherein the pressure sensor is used to sense changes in bending pressure applied externally. When the bending pressure is greater than or equal to a preset value, the pressure sensor triggers a support deformation mechanism to be electrically connected to an external power source. When the support deformation mechanism is powered on, the resistance increases, the temperature rises, and the support deformation mechanism straightens and hardens. When the bending pressure is less than the preset value, the pressure sensor triggers the support deformation mechanism to disconnect the electrical connection with the external power source, the temperature of the support deformation mechanism decreases, and the support deformation mechanism returns to a soft state. The present application provides support for the cable by changing the shape of the support deformation mechanism after power is supplied, thereby effectively preventing the cable from being damaged or signal transmission being unstable due to excessive bending. 2. A method for using a visual sensor cable for an industrial robot, when the bending pressure detected by the pressure sensor is greater than or equal to a preset value, the pressure sensor triggers the on-off control component, thereby electrically connecting the energized deformation component to an external power supply; due to the passage of current, the temperature of the energized deformation component increases, and the shape memory alloy material straightens and hardens, providing support to prevent further bending of the photonic crystal fiber body; when the pressure sensor detects that the pressure is less than the preset value, the pressure sensor will trigger the on-off control component again to disconnect the energized deformation component from the power supply, and the temperature of the energized deformation component will decrease and return to a soft state, thereby reducing the rigidity of the cable and improving its flexibility; the present application detects changes in external pressure and adjusts the support state of the cable in real time to prevent damage to the photonic crystal fiber body due to excessive bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic cross-sectional structure diagram of an embodiment of a visual sensor cable for an industrial robot of the present application.

[0026] Figure 2 It is a side view structural schematic diagram of an embodiment of a visual sensor cable for an industrial robot of the present application.

[0027] Figure 3 The present invention is a schematic diagram of an exploded anatomical structure of a visual sensor cable embodiment for an industrial robot.

[0028] Figure 4 It is a schematic flow chart of the steps of an embodiment of a method for using a visual sensor cable for an industrial robot of the present application.

[0029] Description of reference numerals: 1. Photonic crystal fiber body; 2. Polymer coating; 3. Protective layer; 31. Fixed cavity; 32. Strip hole; 4. Anti-bending device; 41. Pressure sensor; 42. Support deformation mechanism; 421. Power-on deformation component; 5. Adhesive layer; 6. Carbon fiber woven mesh. DETAILED DESCRIPTION

[0030] The following is combined with Figures 1 to 4 This application is described in further detail.

[0031] The present application embodiment discloses a visual sensor cable for an industrial robot and a method of using the same. Figure 1 , a visual sensor cable for an industrial robot comprises a photonic crystal fiber body 1, a polymer coating 2 sleeved on the outer side wall of the photonic crystal fiber body 1, a protective layer 3 sleeved on the outer side of the polymer coating 2, and an anti-bending device 4 inserted in the protective layer 3 and arranged along the length direction of the photonic crystal fiber body 1; The anti-bending device 4 includes pressure sensors 41 inserted into the protective layer 3 and arranged in an array along the length direction of the photonic crystal fiber body 1, and a supporting deformation mechanism 42 arranged along the length direction of the photonic crystal fiber body 1 and electrically connected to the pressure sensors 41. The pressure sensor 41 is electrically connected to an external power supply.

[0032] The pressure sensor 41 of the present application is used to sense the change of the bending pressure applied externally. When the bending pressure is greater than or equal to the preset value, the pressure sensor 41 triggers the support deformation mechanism 42 to be electrically connected to the external power supply. When the support deformation mechanism 42 is powered on, the resistance increases and the temperature rises, so that the support deformation mechanism 42 straightens and hardens; when the bending pressure is less than the preset value, the pressure sensor 41 triggers the support deformation mechanism 42 to disconnect the electrical connection with the external power supply, the temperature of the support deformation mechanism 42 decreases, and the support deformation mechanism 42 returns to a soft state; the present application provides support for the cable by the change of the shape of the support deformation mechanism 42 after power is supplied, thereby effectively preventing the cable from being damaged or the signal transmission from being unstable due to excessive bending; In addition, the photonic crystal fiber body 1 is preferably made of silica material, and titanium dioxide coated on the surface of silica, the polymer coating 2 and the protective layer 3 can provide flexibility and protection, further enhancing the durability and anti-interference ability of the cable. The present application effectively improves the service life of the visual sensor cable in the industrial robot visual sensor and the stability of signal transmission, and improves the anti-bending performance and anti-electromagnetic interference ability.

[0033] Furthermore, if Figure 2 As shown, an adhesive layer 5 is provided between the multiple photonic crystal fiber bodies 1, and the multiple photonic crystal fiber bodies 1 are arranged in parallel and closely attached to each other.

[0034] The photonic crystal fiber body 1 of the present application is a core element for signal transmission, and is fixed together by an adhesive layer 5, so that multiple photonic crystal fiber bodies 1 maintain a stable relative position, avoiding relative movement and friction of the photonic crystal fiber bodies 1 during use; the adhesive layer 5 not only ensures the structural stability between the photonic crystal fiber bodies 1, but also improves the overall mechanical properties of the photonic crystal fiber bodies 1, and can effectively reduce the signal transmission interference inside the cable; at the same time, the parallel arrangement of the photonic crystal fiber bodies 1 helps to optimize the transmission path of the optical signal, reduce signal attenuation, and enhance signal stability and transmission efficiency; the present application improves the anti-interference ability and signal transmission quality of the cable through the coordinated work of multiple photonic crystal fiber bodies 1, thereby improving the application performance of the cable in the industrial robot vision sensor; The adhesive layer 5 is preferably a transparent adhesive.

[0035] Furthermore, if Figure 2 As shown, a carbon fiber woven mesh 6 is further provided between the protective layer 3 and the polymer coating 2 .

[0036] The carbon fiber woven mesh 6 of the present application serves as a reinforcing structure, providing additional mechanical strength and tensile resistance, and plays a supporting and protective role; the weaving structure of the carbon fiber woven mesh 6 enables the carbon fiber woven mesh 6 to evenly disperse the external load when the photonic crystal fiber body 1 is subjected to external physical pressure or bending, thereby preventing damage caused by local excessive force; the carbon fiber also has good anti-electromagnetic interference performance, which can effectively reduce the impact of external electromagnetic waves on signal transmission and ensure the stability of the signal; the combination of the polymer coating 2 and the protective layer 3 and the reinforcing effect of the carbon fiber woven mesh 6 jointly improve the overall durability and compressive resistance of the cable, ensuring the long-term stable operation of the cable in complex industrial environments; the present application improves the cable's resistance to bending, tensile strength, and electromagnetic interference, effectively prolongs the cable's service life, and enhances the reliability and stability of signal transmission.

[0037] Specifically, Figure 3 As shown, the protective layer 3 is provided with fixed cavities 31 arranged in an interval array along the length direction of the photonic crystal fiber body 1, and strip holes 32 arranged along the length direction of the protective layer 3, the pressure sensor 41 is inserted in the fixed cavity 31, and the supporting deformation mechanism 42 is inserted in the strip hole 32.

[0038] The pressure sensor 41 of the present application is firmly fixed in the protective layer 3 through the fixed cavity 31, and can stably sense the bending pressure applied from the outside; the supporting deformation mechanism 42 is inserted in the strip hole 32, and responds to the external pressure change through the electrical connection with the pressure sensor 41, and provides a deformation support to adjust the deformation of the photonic crystal fiber body 1, and prevent the photonic crystal fiber body 1 from excessive bending or breaking due to external force, thereby protecting the stability of signal transmission; the design of the fixed cavity 31 and the strip hole 32 ensures the stable position of each component in the protective layer 3, and can effectively transmit external forces, ensuring the reliability and durability of the cable under various mechanical loads.

[0039] More specifically, if Figure 2 As shown, a plurality of anti-bending devices 4 are arranged in an array along the periphery of the protective layer 3 .

[0040] In the present application, multiple anti-bending devices 4 are distributed around the protective layer 3 to form a uniform distribution structure to provide all-round support and protection; when external force acts on the cable, the anti-bending device 4 can evenly disperse the pressure and bending stress applied to the protective layer 3, thereby preventing the photonic crystal fiber body 1 from being excessively bent or damaged; each anti-bending device 4 monitors the change of external pressure in real time through the pressure sensor 41, and cooperates with the supporting deformation mechanism 42 to ensure that the deformation of the cable is always within a controllable range to avoid interruption or instability of signal transmission; this array arrangement enables the cable to more effectively distribute mechanics when subjected to external forces of different directions and intensities, thereby improving the cable's anti-bending and anti-tensile properties, and enhancing the cable's durability and stability.

[0041] In addition, if Figure 3 As shown, the support deformation mechanism 42 includes an energized deformation component 421 and an on-off control component electrically connected to the energized deformation component 421 and an external power source respectively, and the on-off control component is electrically connected to the pressure sensor 41 .

[0042] In the present application, when the pressure sensor 41 senses the bending pressure applied from the outside, the corresponding electrical signal is transmitted to the on-off control component, and the on-off control component controls the on-off state of the energized deformation component 421 according to the change of the pressure signal; when the externally applied pressure reaches a predetermined value, the on-off control component is started and the energized deformation component 421 is energized, so that the energized deformation component 421 is deformed, thereby adjusting the bending angle or shape of the photonic crystal fiber body 1, providing corresponding support, and preventing excessive bending or damage; the energized deformation component 421 realizes precise adjustment of deformation through the control of current, so that the support effect is more flexible and precise, and can be automatically adjusted according to the real-time pressure change, ensuring the long-term stable operation of the cable; the present application enables the support deformation mechanism 42 to respond to the changes in the external environment in real time, and effectively protect the photonic crystal fiber body 1 from the influence of external mechanical forces; The on-off control component (not shown) is preferably a relay or a programmable logic controller.

[0043] And, if Figure 2 As shown, the energized deformation component 421 is a shape memory alloy.

[0044] In the present application, when the externally applied pressure is transmitted to the on-off control component through the pressure sensor 41 and controls the energized deformation component 421 to be energized, the shape memory alloy will deform due to the increase in temperature, adjust the curvature or shape of the photonic crystal fiber body 1, and provide support; the deformation characteristics of the shape memory alloy enable the energized deformation component 421 to be adjusted in real time according to the actual pressure, not only to provide strong support when the external pressure is large, but also to restore the original state after the pressure is reduced, thereby avoiding excessive deformation or stress concentration; the use of shape memory alloy improves the response speed and accuracy of the support deformation mechanism 42, and at the same time realizes flexible adjustment of deformation through energy-saving electrical control, which not only avoids mechanical damage, but also can maintain the structural stability of the photonic crystal fiber body 1 under dynamic load, enhances the bending, compression and tensile resistance of the cable, thereby extending the service life of the cable, and improving the stability and reliability of signal transmission; The shape memory alloy of the present application includes a martensite phase and an austenite phase. When the energized deformation component 421 is energized, the temperature of the energized deformation component 421 rises through the resistance thermal effect, and the shape memory alloy undergoes a transformation from the martensite phase to the austenite phase, which is manifested as an increase in hardness and an enhancement in rigidity. When the energized deformation component 421 is powered off, the temperature of the energized deformation component 421 drops, causing the austenite phase to transform into the martensite phase, the hardness is reduced, and the alloy becomes soft and deformable.

[0045] Furthermore, if Figure 2 As shown, the polymer coating 2 is a polyimide material.

[0046] In the present application, when polyimide material is used as the polymer coating 2, the polymer coating 2 can effectively protect the photonic crystal fiber body 1 under various environmental conditions; the polyimide material has good high temperature resistance, and can maintain its structural stability even in a high temperature environment, and is not easy to deform or degrade; the chemical resistance of the polyimide material makes the cable not easily damaged when exposed to chemicals or corrosive substances, ensuring the long-term reliability and service life of the cable; the insulating properties of polyimide also effectively prevent electromagnetic interference, helping to ensure the stability of signal transmission; the flexibility and wear resistance of the polyimide material enable the polymer coating 2 to withstand frequent bending and mechanical friction, further enhancing the bending resistance and durability of the cable; the present application uses polyimide material as the polymer coating 2, which can effectively improve the heat resistance, chemical corrosion resistance, and electromagnetic interference resistance of the cable, extend the service life of the cable, and improve its stability and reliability in an industrial environment.

[0047] Furthermore, if Figure 2 As shown, the thickness of the polymer coating 2 is 5µm-10µm.

[0048] The polymer coating 2 of the present application has a thickness of 5µm-10µm, so that the polymer coating 2 can maintain flexibility and adaptability while providing sufficient protection; the thickness of 5µm-10µm can not only effectively isolate chemicals, dust and moisture in the external environment, but also prevent electromagnetic interference from affecting the signal transmission inside the cable, thereby ensuring the stability of the signal; it also ensures the softness and bendability of the polymer coating 2, and the cable will not become stiff and inconvenient to bend due to being too thick, nor will it be unable to provide sufficient mechanical protection due to being too thin; the visual sensor cable can work reliably in a complex industrial environment, thereby improving the stability, durability and adaptability of the overall cable.

[0049] Specifically, Figure 4 As shown, a method for using a visual sensor cable for an industrial robot includes a visual sensor cable for an industrial robot, wherein a supporting deformation mechanism 42 includes an energized deformation component 421, and an on-off control component electrically connected to the energized deformation component 421 and an external power supply, and further includes the following steps: S1: When the photonic crystal fiber body 1 is bent, the protective layer 3 applies pressure to the pressure sensor 41; S2: When the pressure detected by the pressure sensor 41 is greater than or equal to the preset value, the pressure sensor 41 triggers the on-off control component to electrically connect the energized deformation component 421 to the external power supply; S3: When the energized deformation component 421 is energized, the resistance increases, the temperature rises, and the energized deformation component 421 straightens and hardens; S4: When the pressure detected by the pressure sensor 41 is less than a preset value, the pressure sensor 41 triggers the on-off control component to disconnect the energized deformation component 421 from the external power supply; S5: When the energized deformation component 421 is powered off, the temperature decreases and the energized deformation component 421 returns to a soft state.

[0050] In the present application, when the bending pressure detected by the pressure sensor 41 is greater than or equal to a preset value, the pressure sensor 41 triggers the on-off control component, thereby electrically connecting the energized deformation component 421 to an external power source; due to the passage of current, the temperature of the energized deformation component 421 rises, and the shape memory alloy material straightens and hardens, providing support to prevent the photonic crystal fiber body 1 from further bending; when the pressure sensor 41 detects that the pressure is less than the preset value, the pressure sensor 41 will trigger the on-off control component again to disconnect the energized deformation component 421 from the power source, and the temperature of the energized deformation component 421 will decrease and return to a soft state, thereby reducing the rigidity of the cable and improving its flexibility; the present application detects changes in external pressure and adjusts the support state of the cable in real time to prevent the photonic crystal fiber body 1 from being damaged due to excessive bending.

[0051] The implementation principle of a visual sensor cable for an industrial robot and a method of using the same is as follows: The pressure sensor 41 is used to sense the change of the bending pressure applied externally. When the bending pressure is greater than or equal to the preset value, the pressure sensor 41 triggers the support deformation mechanism 42 to be electrically connected to the external power supply. When the support deformation mechanism 42 is powered on, the resistance increases and the temperature rises, so that the support deformation mechanism 42 straightens and hardens; when the bending pressure is less than the preset value, the pressure sensor 41 triggers the support deformation mechanism 42 to disconnect the electrical connection with the external power supply, the temperature of the support deformation mechanism 42 decreases, and the support deformation mechanism 42 returns to a soft state; the present application provides support for the cable by the change of the shape of the support deformation mechanism 42 after power is supplied, thereby effectively preventing the cable from being damaged or the signal transmission from being unstable due to excessive bending; In addition, the photonic crystal fiber body 1 is preferably made of silica material, and titanium dioxide coated on the surface of silica, the polymer coating 2 and the protective layer 3 can provide flexibility and protection, further enhancing the durability and anti-interference ability of the cable. The present application effectively improves the service life of the visual sensor cable in the industrial robot visual sensor and the stability of signal transmission, and improves the anti-bending performance and anti-electromagnetic interference ability.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A visual sensor cable for an industrial robot, characterized in that: The invention comprises a photonic crystal fiber body (1), a polymer coating (2) sleeved on the outer side wall of the photonic crystal fiber body (1), a protective layer (3) sleeved on the outer side of the polymer coating (2), and an anti-bending device (4) inserted in the protective layer (3) and arranged along the length direction of the photonic crystal fiber body (1); The anti-bending device (4) comprises pressure sensors (41) inserted into the protective layer (3) and arranged in an array along the length direction of the photonic crystal fiber body (1), and a supporting deformation mechanism (42) arranged along the length direction of the photonic crystal fiber body (1) and electrically connected to the pressure sensors (41), wherein the pressure sensors (41) are electrically connected to an external power supply.

2. A visual sensor cable for an industrial robot according to claim 1, characterized in that: An adhesive layer (5) is provided between the plurality of photonic crystal fiber bodies (1), and the plurality of photonic crystal fiber bodies (1) are arranged in parallel and closely attached to each other.

3. A visual sensor cable for an industrial robot according to claim 1, characterized in that: A carbon fiber woven mesh (6) is also provided between the protective layer (3) and the polymer coating (2).

4. A visual sensor cable for an industrial robot according to claim 1, characterized in that: The protective layer (3) is provided with fixed cavities (31) arranged in an array in a spaced relationship along the length direction of the photonic crystal fiber body (1), and strip holes (32) arranged along the length direction of the protective layer (3); the pressure sensor (41) is inserted into the fixed cavity (31), and the supporting deformation mechanism (42) is inserted into the strip hole (32).

5. The visual sensor cable for an industrial robot according to claim 1, characterized in that: A plurality of the anti-bending devices (4) are arranged in an array along the periphery of the protective layer (3).

6. A visual sensor cable for an industrial robot according to claim 1, characterized in that: The support deformation mechanism (42) comprises an energized deformation component (421), and an on-off control component electrically connected to the energized deformation component (421) and an external power source, respectively, and the on-off control component is electrically connected to the pressure sensor (41).

7. A visual sensor cable for an industrial robot according to claim 6, characterized in that: The energized deformation component (421) is a shape memory alloy.

8. The visual sensor cable for an industrial robot according to claim 1, characterized in that: The polymer coating (2) is made of polyimide material.

9. The visual sensor cable for an industrial robot according to claim 1, characterized in that: The thickness of the polymer coating (2) is 5µm-10µm.

10. A method for using a visual sensor cable for an industrial robot, characterized in that: A visual sensor cable for an industrial robot comprising any one of claims 1 to 9, wherein the support deformation mechanism (42) comprises an energized deformation component (421), and an on-off control component electrically connected to the energized deformation component (421) and an external power supply, respectively, and further comprising the following steps: S1: when the photonic crystal fiber body (1) is bent, the protective layer (3) applies pressure to the pressure sensor (41); S2: When the pressure detected by the pressure sensor (41) is greater than or equal to a preset value, the pressure sensor (41) triggers the on-off control component to electrically connect the energized deformation component (421) to an external power source; S3: When the energized deformation component (421) is energized, the resistance increases, the temperature rises, and the energized deformation component (421) straightens and hardens; S4: When the pressure detected by the pressure sensor (41) is less than a preset value, the pressure sensor (41) triggers the on-off control component to disconnect the energized deformation component (421) from the external power supply; S5: When the energized deformation component (421) is powered off, the temperature rises and the energized deformation component (421) returns to a soft state.

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