Vision sensor cable for industrial robot and method of use

Abstract

The application discloses a kind of visual sensor cable and use method for industrial robot, cable includes photonic crystal fiber body, polymer coating, protective layer and anti-bending device;Anti-bending device includes pressure sensor, and support deformation mechanism;Cable use method, pressure sensor is used to respond to the bending pressure change of external exertion, when bending pressure is greater than or equal to preset value, pressure sensor triggers support deformation mechanism and external power supply electric connection, when support deformation mechanism is powered on, resistance increases, temperature rises, so that support deformation mechanism straightens and hardens;When bending pressure is less than preset value, pressure sensor triggers support deformation mechanism and external power supply is disconnected electric connection, support deformation mechanism temperature reduces, and support deformation mechanism recovers soft state;The application provides support for cable by the change of the form of support deformation mechanism after power on, to effectively prevent cable from being damaged or signal transmission unstable due to excessive bending.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of visual sensor cable, in particular to a visual sensor cable for industrial robot and a use method thereof. BACKGROUND

[0002] At present, the visual sensor in the industrial robot generally adopts the traditional metal conductor cable as the signal transmission medium; however, these traditional metal conductor cables have the disadvantages of low high-speed signal transmission efficiency and being easily interfered by electromagnetic; at the same time, the flexibility of the visual sensor cable is poor, and under frequent bending, the cable structure is easily damaged, the service life is reduced, and even the cable is broken, thereby affecting the stability and reliability of signal transmission. SUMMARY

[0003] In order to improve the defect that the flexibility of the visual sensor cable is poor and is easily damaged and broken under frequent bending, the present application provides a visual sensor cable for industrial robot and a use method thereof.

[0004] The visual sensor cable for industrial robot and the use method thereof provided by the present application adopt the following technical scheme:

[0005] A visual sensor cable for industrial robot, comprising a photonic crystal fiber body, a polymer coating sleeved on the outer wall of the photonic crystal fiber body, a protective layer sleeved on the outside of the polymer coating, and a bending prevention device inserted into the protective layer and arranged along the length direction of the photonic crystal fiber body.

[0006] The bending prevention device comprises a pressure sensor inserted into the protective layer and arranged in an array along the length direction of the photonic crystal fiber body, and a support deformation mechanism arranged along the length direction of the photonic crystal fiber body and electrically connected with the pressure sensor, and the pressure sensor is electrically connected with an external power supply.

[0007] By adopting the above technical scheme, the pressure sensor is used to sense the change of the bending pressure applied externally, when the bending pressure is greater than or equal to a preset value, the pressure sensor triggers the support deformation mechanism to be electrically connected with the external power supply, when the support deformation mechanism is powered on, the resistance increases and the temperature rises, so that the support deformation mechanism is straightened and hardened; when the bending pressure is less than the preset value, the pressure sensor triggers the support deformation mechanism to be disconnected 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 through the change of the state of the support deformation mechanism after being powered on, thereby effectively preventing the cable from being damaged or the signal transmission being unstable due to excessive bending.

[0008] Preferably, an adhesive layer is arranged between the plurality of photonic crystal fiber bodies, and the plurality of photonic crystal fiber bodies are arranged in parallel and are in close contact with each other.

[0009] By adopting the above technical solution, the photonic crystal fiber bodies are fixed together by the adhesive layer as the core elements for signal transmission, so that the plurality of photonic crystal fiber bodies maintain stable relative positions and avoid 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 signal transmission interference inside the cable; at the same time, the parallel arrangement of the photonic crystal fiber bodies helps to optimize the transmission path of the optical signal, reduce signal attenuation, and enhance the stability and transmission efficiency of the signal; the application improves the anti-interference ability and signal transmission quality of the cable through the cooperative work of the plurality of photonic crystal fiber bodies, thereby improving the application performance of the cable in the industrial robot vision sensor.

[0010] Preferably, a carbon fiber woven mesh is arranged between the protective layer and the polymer coating.

[0011] By adopting the above technical solution, the carbon fiber woven mesh provides additional mechanical strength and tensile resistance as a reinforcing structure, and plays a supporting and protective role; the woven structure of the carbon fiber woven mesh enables the carbon fiber woven mesh to uniformly disperse external loads when the photonic crystal fiber body is subjected to external physical pressure or bending, preventing damage caused by excessive local stress; the carbon fiber also has good anti-electromagnetic interference performance, which can effectively reduce the influence of external electromagnetic waves on signal transmission and ensure the stability of the signal; the combination of the polymer coating and the protective layer and the reinforcing effect of the carbon fiber woven mesh together improve the overall durability and pressure resistance of the cable, ensuring long-term stable operation of the cable in complex industrial environments; the application improves the bending resistance, tensile resistance, and anti-electromagnetic interference ability of the cable, effectively prolongs the service life of the cable, and enhances the reliability and stability of signal transmission.

[0012] Preferably, the protective layer is provided with fixed cavities arranged in a spaced array along the length direction of the photonic crystal fiber body, and strip-shaped holes arranged along the length direction of the protective layer, the pressure sensor is inserted into the fixed cavities, and the support deformation mechanism is inserted into the strip-shaped holes.

[0013] By adopting the technical scheme, the pressure sensor is firmly fixed in the protection layer through the fixed cavity, and can stably sense the externally applied bending pressure; the support deformation mechanism is inserted in the strip-shaped hole, and responds to the external pressure change through the electrical connection with the pressure sensor, provides deformation support to adjust the deformation of the photonic crystal fiber body, prevents the photonic crystal fiber body from being excessively bent or broken due to external force, and thus protects the stability of signal transmission; the design of the fixed cavity and the strip-shaped hole ensures the position stability of each component in the protection layer, and can effectively transmit the external force, ensuring the reliability and durability of the cable under various mechanical loads.

[0014] Preferably, a plurality of the anti-bending devices are arranged in an array along the circumference of the protection layer.

[0015] By adopting the technical scheme, the plurality of anti-bending devices are distributed along the circumference of the protection layer, forming a uniform distribution structure to provide omnidirectional support and protection; when external force acts on the cable, the anti-bending devices can uniformly disperse the pressure and bending stress applied on the protection layer, thereby preventing the photonic crystal fiber body from being excessively bent or damaged; each anti-bending device monitors the change of external pressure in real time through the pressure sensor, and cooperates with the support deformation mechanism to ensure that the deformation of the cable is always within a controllable range, avoiding signal transmission interruption or instability; the array arrangement enables the cable to more effectively distribute mechanical forces when subjected to external forces in different directions and intensities, improving the anti-bending and anti-stretching performance of the cable, and enhancing the durability and stability of the cable.

[0016] Preferably, the support deformation mechanism includes an electrically conductive deformation component, and a on-off control component electrically connected with the electrically conductive deformation component and an external power source, and the on-off control component is electrically connected with the pressure sensor.

[0017] By adopting the technical scheme, when the pressure sensor senses the externally applied bending pressure, 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 electrically conductive deformation component according to the change of the pressure signal; when the externally applied pressure reaches a predetermined value, the on-off control component starts and makes the electrically conductive deformation component conduct electricity, so that the electrically conductive deformation component deforms, thereby adjusting the bending angle or shape of the photonic crystal fiber body and providing corresponding support to prevent excessive bending or damage; the electrically conductive deformation component realizes precise adjustment of deformation through control of current, so that the support effect is more flexible and accurate, and can be automatically adjusted according to real-time pressure changes to ensure long-term stable operation of the cable; the application enables the support deformation mechanism to respond to changes in the external environment in real time, effectively protecting the photonic crystal fiber body from external mechanical forces.

[0018] Preferably, the electrically conductive deformation component is a shape memory alloy.

[0019] 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 power-on deformation component to be powered on, the shape memory alloy will deform due to temperature rise, adjust the bending degree or morphology of the photonic crystal fiber body, and provide support; the deformation characteristics of the shape memory alloy enable the power-on deformation component to adjust in real time according to the actual pressure, not only providing strong support when the external pressure is large, but also restoring to the original state after the pressure decreases, thereby avoiding excessive deformation or stress concentration; the use of the shape memory alloy improves the response speed and accuracy of the support deformation mechanism, and at the same time, flexible adjustment of deformation is realized through energy-saving electric control, not only avoiding mechanical damage, but also maintaining the structural stability of the photonic crystal fiber body under dynamic load, enhancing the bending resistance, compression resistance and tensile resistance of the cable, thereby prolonging the service life of the cable and improving the stability and reliability of signal transmission.

[0020] Preferably, the polymer coating is a polyimide material.

[0021] 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 use of polyimide material as the polymer coating can effectively improve the heat resistance, chemical corrosion resistance and electromagnetic interference resistance of the cable, prolong the service life of the cable, and improve its stability and reliability in industrial environments.

[0022] Preferably, the thickness of the polymer coating is 5µm-10µm.

[0023] By adopting the above technical solution, the 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 chemical substances, dust and moisture in the external environment, prevent electromagnetic interference from affecting signal transmission inside the cable, and ensure signal stability; it also ensures the softness and flexibility of the polymer coating, which will not make the cable rigid and difficult to bend due to excessive thickness, nor will it fail to provide sufficient mechanical protection due to excessive thinness; the visual sensor cable can work reliably in complex industrial environments, improving the stability, durability and adaptability of the overall cable.

[0024] A use method of a visual sensor cable for an industrial robot, comprising the visual sensor cable for an industrial robot, the support deformation mechanism comprising a power-on deformation component, and an on-off control component electrically connected to the power-on deformation component and an external power source respectively, further comprising the following steps:

[0025] S1: When the photonic crystal fiber body is bent, the protective layer applies pressure to the pressure sensor;

[0026] S2: when the pressure sensor detects that the pressure is greater than or equal to a preset value, the pressure sensor triggers the on-off control component to electrically connect the power supply to the power deformation component;

[0027] S3: when the power deformation component is powered on, the resistance increases and the temperature rises, and the power deformation component is straightened and hardened;

[0028] S4: when the pressure sensor detects that the pressure is less than a preset value, the pressure sensor triggers the on-off control component to disconnect the power supply from the power deformation component;

[0029] S5: when the power deformation component is powered off, the temperature decreases and the power deformation component returns to a soft state.

[0030] By adopting the above technical solution, 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 to electrically connect the power supply to the power deformation component. Due to the current passing through, the temperature of the power deformation component rises, the shape memory alloy material is straightened and hardened, providing support to prevent the photonic crystal fiber body from further bending. When the pressure sensor detects that the pressure is less than a preset value, the pressure sensor triggers the on-off control component again to disconnect the power deformation component from the power supply. The temperature of the power deformation component decreases and returns to a soft state, thereby reducing the rigidity of the cable and improving flexibility. The present application detects external pressure changes and adjusts the support state of the cable in real time to avoid damage to the photonic crystal fiber body due to excessive bending.

[0031] In summary, the present application has at least one of the following beneficial technical effects:

[0032] 1. A vision sensor cable for an industrial robot, a pressure sensor is used to sense the change of externally applied bending pressure. When the bending pressure is greater than or equal to a preset value, the pressure sensor triggers the support deformation mechanism to be electrically connected to an external power source. When the support deformation mechanism is powered on, the resistance increases and the temperature rises, causing the support deformation mechanism to straighten and harden. When the bending pressure is less than a preset value, the pressure sensor triggers the support deformation mechanism to be disconnected from 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 to the cable through the change in the shape of the support deformation mechanism after being powered on, thereby effectively preventing damage or unstable signal transmission of the cable due to excessive bending;

[0033] 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 power-on deformation component with the external power supply; due to the current passing through, the temperature of the power-on deformation component rises, the shape memory alloy material produces straightening and hardening, 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, disconnecting the power-on deformation component from the power supply, the temperature of the power-on deformation component decreases, and it returns to a soft state, thereby reducing the rigidity and improving the flexibility of the cable; the present application adjusts the support state of the cable in real time by detecting the change of external pressure, avoiding damage to the photonic crystal fiber body due to excessive bending. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is a cross-sectional structure schematic diagram of an embodiment of a visual sensor cable for an industrial robot according to the present application.

[0035] Figure 2 is a side view structure schematic diagram of an embodiment of a visual sensor cable for an industrial robot according to the present application.

[0036] Figure 3 is an exploded cross-sectional structure schematic diagram of an embodiment of a visual sensor cable for an industrial robot according to the present application.

[0037] Figure 4 is a step flow schematic diagram of an embodiment of a method for using a visual sensor cable for an industrial robot according to the present application.

[0038] BRIEF DESCRIPTION OF DRAWINGS

[0039] 1, photonic crystal fiber body; 2, polymer coating; 3, protective layer; 31, fixed cavity; 32, strip-shaped 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

[0040] The following will be described in detail below in combination with the accompanying Figures 1 to 4 The present application will be further described in detail.

[0041] Embodiments of the present application disclose a visual sensor cable for an industrial robot and a method for using the same. Referring to Figure 1 A visual sensor cable for an industrial robot includes a photonic crystal fiber body 1, a polymer coating 2 sleeved on the outer sidewall of the photonic crystal fiber body 1, a protective layer 3 sleeved on the outside of the polymer coating 2, and an anti-bending device 4 inserted into the protective layer 3 and arranged along the length direction of the photonic crystal fiber body 1.

[0042] The anti-bending device 4 comprises a pressure sensor 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 support deformation mechanism 42 arranged along the length direction of the photonic crystal fiber body 1 and electrically connected with the pressure sensor 41, and the pressure sensor 41 is electrically connected with an external power supply.

[0043] 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 a preset value, the pressure sensor 41 triggers the support deformation mechanism 42 to be electrically connected with 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 is stretched and hardened; when the bending pressure is less than the preset value, the pressure sensor 41 triggers the support deformation mechanism 42 to be disconnected 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 through the change of the state of the support deformation mechanism 42 after being powered on, thereby effectively preventing the cable from being damaged or the signal transmission being unstable due to excessive bending;

[0044] In addition, the photonic crystal fiber body 1 is preferably made of silica material, and titanium dioxide coated on the surface of the silica, and the polymer coating layer 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 and signal transmission stability of the visual sensor cable in the visual sensor of the industrial robot, and improves the anti-bending performance and anti-electromagnetic interference ability.

[0045] Further, as shown in Figure 2 A plurality of photonic crystal fiber bodies 1 are provided with a bonding layer 5, and the plurality of photonic crystal fiber bodies 1 are arranged in parallel and closely adhere to each other.

[0046] The photonic crystal fiber body 1 of the present application is a core element for signal transmission, and is fixed together through the bonding layer 5, so that the plurality of photonic crystal fiber bodies 1 maintain a stable relative position, avoiding the relative movement and friction of the photonic crystal fiber body 1 during use; the bonding 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 body 1, which 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 the stability and transmission efficiency of the signal; the present application improves the anti-interference ability and signal transmission quality of the cable through the cooperative work of the plurality of photonic crystal fiber bodies 1, thereby improving the application performance of the cable in the visual sensor of the industrial robot;

[0047] The bonding layer 5 is preferably a transparent adhesive.

[0048] Further, as shown in Figure 2As shown, a carbon fiber woven net 6 is further arranged between the protective layer 3 and the polymer coating 2.

[0049] The carbon fiber woven net 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 woven structure of the carbon fiber woven net 6 enables the carbon fiber woven net 6 to uniformly disperse external loads when the photonic crystal fiber body 1 is subjected to external physical pressure or bending, preventing damage caused by excessive local stress; the carbon fiber also has good electromagnetic interference resistance, which can effectively reduce the influence of external electromagnetic waves on signal transmission and ensure signal stability; the combination of the polymer coating 2 and the protective layer 3 and the reinforcing effect of the carbon fiber woven net 6 together improve the overall durability and pressure resistance of the cable, ensuring long-term stable operation of the cable in complex industrial environments; the present application improves the bending resistance, tensile resistance, and electromagnetic interference resistance of the cable, effectively prolongs the service life of the cable, and enhances the reliability and stability of signal transmission.

[0050] Specifically, as shown in Figure 3 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-shaped holes 32 arranged along the length direction of the protective layer 3, the pressure sensor 41 is inserted into the fixed cavities 31, and the support deformation mechanism 42 is inserted into the strip-shaped holes 32.

[0051] The pressure sensor 41 of the present application is firmly fixed in the protective layer 3 through the fixed cavities 31 and can stably sense the external bending pressure; the support deformation mechanism 42 is inserted into the strip-shaped holes 32 and responds to external pressure changes through electrical connection with the pressure sensor 41, providing deformation support to adjust the deformation of the photonic crystal fiber body 1, preventing the photonic crystal fiber body 1 from being excessively bent or broken due to external force, thereby protecting the stability of signal transmission; the design of the fixed cavities 31 and the strip-shaped holes 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.

[0052] More specifically, as shown in Figure 2 The plurality of anti-bending devices 4 are arranged in an array along the circumference of the protective layer 3.

[0053] The plurality of anti-bending devices 4 are distributed around the protective layer 3, forming a uniform distribution structure to provide all-round support and protection. When external force acts on the cable, the anti-bending devices 4 can uniformly disperse the pressure and bending stress applied on 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 support deformation mechanism 42 to ensure that the deformation of the cable is always within a controllable range, avoiding signal transmission interruption or instability. The array arrangement enables the cable to more effectively distribute mechanical forces when subjected to external forces of different directions and intensities, improving the anti-bending and anti-stretching performance of the cable, and enhancing the durability and stability of the cable.

[0054] In addition, as shown in Figure 3 The support deformation mechanism 42 includes an electrically conductive deformation component 421, and a on-off control component electrically connected with the electrically conductive deformation component 421 and an external power source, the on-off control component being electrically connected with the pressure sensor 41.

[0055] When the pressure sensor 41 senses the bending pressure applied externally, it transmits the corresponding electrical signal to the on-off control component, which controls the on-off state of the electrically conductive 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 starts and makes the electrically conductive deformation component 421 conduct electricity, causing the electrically conductive deformation component 421 to deform, thereby adjusting the bending angle or shape of the photonic crystal fiber body 1, providing corresponding support to prevent excessive bending or damage. The electrically conductive deformation component 421 realizes precise adjustment of deformation through control of electric current, making the support effect more flexible and accurate, and enabling automatic adjustment according to real-time pressure changes to ensure long-term stable operation of the cable. The application enables the support deformation mechanism 42 to respond to changes in the external environment in real time, effectively protecting the photonic crystal fiber body 1 from external mechanical forces;

[0056] The on-off control component (not shown in the figure) is preferably a relay or a programmable logic controller.

[0057] And, as shown in Figure 2 The electrically conductive deformation component 421 is a shape memory alloy.

[0058] When the externally applied pressure is transmitted to the on-off control assembly through the pressure sensor 41 and controls the power-on deformation assembly 421 to be powered on, the shape memory alloy will deform due to temperature rise, adjust the bending degree or morphology of the photonic crystal fiber body 1, and provide support; the deformation characteristics of the shape memory alloy enable the power-on deformation assembly 421 to adjust in real time according to the actual pressure, not only providing strong support when the external pressure is large, but also restoring to the original state after the pressure decreases, thereby avoiding excessive deformation or stress concentration; the use of the 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 electric control, not only avoiding mechanical damage, but also maintaining the structural stability of the photonic crystal fiber body 1 under dynamic load, enhancing the bending resistance, compression resistance and tensile resistance of the cable, thereby prolonging the service life of the cable and improving the stability and reliability of signal transmission;

[0059] The shape memory alloy of the present application includes martensite phase and austenite phase. When the power-on deformation assembly 421 is powered on, the temperature of the power-on deformation assembly 421 rises through the resistance heating 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 rigidity.

[0060] When the power-on deformation assembly 421 is powered off, the temperature of the power-on deformation assembly 421 decreases, causing the austenite phase to transform into the martensite phase, the hardness decreases, and the alloy becomes soft and deformable.

[0061] Further, as shown in Figure 2 The polymer coating 2 is a polyimide material.

[0062] When the 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, can maintain its structural stability even in high-temperature environments, and is not prone to deformation or degradation; the chemical resistance of the polyimide material makes the cable not prone to damage when contacting chemicals or corrosive substances, ensuring the long-term reliability and service life of the cable; the insulating properties of the 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 use of the polyimide material as the polymer coating 2 in the present application can effectively improve the heat resistance, chemical corrosion resistance, and electromagnetic interference resistance of the cable, prolong the service life of the cable, and enhance its stability and reliability in industrial environments.

[0063] Further, as shown in Figure 2 The thickness of the polymer coating 2 is 5 µm-10 µm.

[0064] The polymer coating 2 of the application has a thickness of 5-10 microns, which enables the polymer coating 2 to maintain flexibility and adaptability while providing adequate protection; the thickness of 5-10 microns can effectively isolate chemical substances, dust and moisture in the external environment, prevent electromagnetic interference from affecting the signal transmission inside the cable, and ensure the stability of the signal; also ensures the softness and bendability of the polymer coating 2, which will not cause the cable to be stiff and inconvenient to bend due to being too thick, nor will it fail to provide adequate mechanical protection due to being too thin; enables the visual sensor cable to work reliably in complex industrial environments, and improves the stability, durability and adaptability of the overall cable.

[0065] Specifically, as shown in Figure 4 A visual sensor cable for industrial robots and a use method thereof, the visual sensor cable for industrial robots comprises a deformation supporting mechanism 42, the deformation supporting mechanism 42 comprises a current-carrying deformation component 421, and a switch control component electrically connected with the current-carrying deformation component 421 and an external power supply, and the use method comprises the following steps:

[0066] S1: When the photonic crystal fiber body 1 is bent, the protective layer 3 applies pressure to the pressure sensor 41;

[0067] S2: When the pressure sensor 41 detects that the pressure is greater than or equal to a preset value, the pressure sensor 41 triggers the switch control component to electrically connect the current-carrying deformation component 421 with the external power supply;

[0068] S3: When the current-carrying deformation component 421 is powered on, the resistance increases, the temperature rises, and the current-carrying deformation component 421 straightens and becomes hard;

[0069] S4: When the pressure sensor 41 detects that the pressure is less than the preset value, the pressure sensor 41 triggers the switch control component to electrically disconnect the current-carrying deformation component 421 from the external power supply;

[0070] S5: When the current-carrying deformation component 421 is powered off, the temperature decreases, and the current-carrying deformation component 421 returns to a soft state.

[0071] When the bending 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 assembly, thereby electrically connecting the power-on deformation assembly 421 with the external power supply; due to the current passing through, the temperature of the power-on deformation assembly 421 rises, the shape memory alloy material produces straightening and hardening, 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 assembly again, disconnecting the power-on deformation assembly 421 from the power supply, and the temperature of the power-on deformation assembly 421 decreases, returning to a soft state, thereby reducing the rigidity of the cable and improving flexibility; the application adjusts the support state of the cable in real time by detecting external pressure changes, avoiding damage to the photonic crystal fiber body 1 due to excessive bending.

[0072] The embodiment of the application is a visual sensor cable for an industrial robot and a use method, and the implementation principle is:

[0073] The pressure sensor 41 is used to sense the change of the bending pressure applied externally, and 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 with the external power supply; when the support deformation mechanism 42 is powered on, the resistance increases and the temperature rises, causing the support deformation mechanism 42 to straighten and harden; when the bending pressure is less than the preset value, the pressure sensor 41 triggers the support deformation mechanism 42 to be disconnected from the external power supply, and the temperature of the support deformation mechanism 42 decreases, returning to a soft state; the application provides support for the cable through the change in the shape of the support deformation mechanism 42 after being powered on, thereby effectively preventing damage to the cable due to excessive bending or unstable signal transmission;

[0074] In addition, the photonic crystal fiber body 1 is preferably a silica material, and the titanium dioxide coated on the surface of the 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 application effectively improves the service life and signal transmission stability of the visual sensor cable in the industrial robot visual sensor, and improves the bending resistance and electromagnetic interference resistance.

[0075] The above are preferred embodiments of the application, which do not limit the protection scope of the application, therefore: any equivalent changes made on the basis of the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A vision sensor cable for an industrial robot, characterized in that, The photonic crystal fiber body (1), the polymer coating (2) sleeved on the outer side wall of the photonic crystal fiber body (1), the protective layer (3) sleeved on the outer side of the polymer coating (2), and the anti-bending device (4) inserted into the protective layer (3) and arranged along the length direction of the photonic crystal fiber body (1); The anti-bending device (4) includes a pressure sensor (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 support deformation mechanism (42) arranged along the length direction of the photonic crystal fiber body (1) and electrically connected with the pressure sensor (41); the pressure sensor (41) is electrically connected with an external power supply; The support deformation mechanism (42) includes an electrically conductive deformation component (421), and a on-off control component electrically connected with the electrically conductive deformation component (421) and an external power supply; the on-off control component is electrically connected with the pressure sensor (41); the electrically conductive deformation component (421) is a shape memory alloy.

2. A vision sensor cable for an industrial robot according to claim 1, characterized in that, A plurality of the photonic crystal fiber bodies (1) are provided with a bonding layer (5), and a plurality of the photonic crystal fiber bodies (1) are arranged in parallel and closely adhere to each other.

3. A vision sensor cable for an industrial robot according to claim 1, characterized in that, The protective layer (3) and the polymer coating (2) are further provided with a carbon fiber woven mesh (6).

4. The vision 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 at intervals along the length direction of the photonic crystal fiber body (1), and strip-shaped holes (32) arranged along the length direction of the protective layer (3); the pressure sensor (41) is inserted into the fixed cavities (31), and the support deformation mechanism (42) is inserted into the strip-shaped holes (32).

5. The vision 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 circumferential side of the protective layer (3).

6. A vision sensor cable for an industrial robot according to claim 1, characterized in that, The polymer coating (2) is a polyimide material.

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

8. A method of using a vision sensor cable for an industrial robot as claimed in any one of claims 1-7, characterized in that, The method comprises 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 sensor (41) detects that the pressure is greater than or equal to a preset value, the pressure sensor (41) triggers the on-off control component to electrically connect the electrically conductive deformation component (421) with an external power supply; S3: When the electrically conductive deformation component (421) is powered on, the resistance increases, the temperature rises, and the electrically conductive deformation component (421) becomes straight and hard; S4: When the pressure sensor (41) detects that the pressure is less than the preset value, the pressure sensor (41) triggers the on-off control component to disconnect the electrically conductive deformation component (421) from the external power supply; S5: When the electrically conductive deformation component (421) is powered off, the temperature decreases, and the electrically conductive deformation component (421) returns to a soft state.

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