A pressure-temperature gradient coupling sensor and its application

Abstract

The present invention discloses a pressure-temperature gradient coupling sensor and its application, which belongs to the technical field of intelligent robot sensors and flexible wearable electronics, and specifically includes a mesh elastic wire containing temperature-sensitive material, coated on the outside of a flexible film of the pressure-sensitive material, and a two-way overflow valve; wherein the two-way overflow valve is fixed at the entrance of the flexible film, the mesh elastic wire is completely coated on the outside of the flexible film, and its end is fixed on the two-way overflow valve. The present invention realizes overall coupling deformation based on the pressure-sensitive film and the temperature-sensitive elastic wire, while meeting the detection requirements of the dynamic gradient change of pressure-temperature; compared with the traditional single variable sensor, the pressure-temperature gradient coupling sensor improves the response characteristics of the sensor through the synergistic coupling of pressure and temperature, and avoids the signal asynchronism caused by the series and parallel connection of multiple single-factor sensors.

Description

Technical Field

[0001] The invention belongs to the technical field of sensors, and in particular relates to a pressure-temperature gradient coupling sensor and the application of the sensor. Background Art

[0002] In the fields of industrial production, environmental monitoring, aerospace, etc., it is often necessary to measure pressure and temperature gradients simultaneously. Traditional pressure sensors and temperature sensors are usually independent and need to be installed and used separately, which not only increases the complexity and cost of the system, but also makes it difficult to accurately measure the coupling relationship between pressure and temperature gradients.

[0003] The pressure-temperature gradient coupled sensor, also known as a dual-modal tactile sensor, is an advanced sensing device that can simultaneously detect and distinguish pressure and temperature changes. This sensor is mainly based on two sensing mechanisms: piezoresistive effect and thermoelectric effect. By combining these two effects, the sensor can independently detect changes in pressure and temperature.

[0004] Pressure-temperature gradient coupled sensors show broad application prospects in many fields. Therefore, it is of great practical significance to develop a coupled sensor that can accurately measure pressure and temperature gradients simultaneously. Summary of the invention

[0005] In view of the above deficiencies in the prior art, the present invention provides a pressure-temperature gradient coupling sensor and its application, which can accurately measure pressure and temperature gradient at the same time and has the advantages of high precision, high stability, fast response speed, etc.

[0006] The present invention is solved by the following technical solutions.

[0007] A pressure-temperature gradient coupling sensor, comprising: a housing, the housing providing airtightness and heat insulation functions; a tubular anode wire, which is arranged in the housing and is an open tubular structure, the tubular structure having an inner cavity; a multi-head flexible cathode wire, which is arranged in the housing and in the inner cavity of the tubular anode wire; a power supply and signal line, which connects the tubular anode wire and the multi-head flexible cathode wire and is led out to the outside of the housing; a pressure-sensitive elastic film, which is arranged in the housing and is in an inflated state; a temperature-sensitive elastic net rope, which is coated on the pressure-sensitive elastic film; The pressure-sensitive elastic film and the temperature-sensitive elastic net rope are placed as a whole in a cage-like structure formed by a multi-head flexible cathode wire; there is a connection point between the multi-head flexible cathode wire and the temperature-sensitive elastic net rope, and there is a connection point between the multi-head flexible cathode wire and the pressure-sensitive elastic film; a transducer element, the part of which is in the shell connects the pressure-sensitive elastic film and the temperature-sensitive elastic net rope; the part of which is outside the shell is used to sense external pressure and temperature signals, and thereby cause the state changes of the pressure-sensitive elastic film and the temperature-sensitive elastic net rope.

[0008] In a preferred embodiment, an internal pressure regulating valve is provided on the housing for adjusting the pressure inside the sensor.

[0009] In a preferred embodiment, the number of the multi-head flexible cathode wires is 6 to 8, and the ends of the multi-head flexible cathode wires are rotatably mounted on the perforated disc via a damping ring. They can flexibly rotate according to the state changes of the pressure-sensitive elastic film and the temperature-sensitive elastic net rope, thereby causing changes in the electrical signal and improving the detection sensitivity.

[0010] In a preferred embodiment, the temperature-sensitive elastic net rope has a spider web structure.

[0011] In a preferred embodiment, the center of the transducer element is a two-way overflow valve, the inner side of the two-way overflow valve is wrapped by the pressure-sensitive elastic film; the outer ring of the transducer element is provided with a heat-conducting ring, the inner side of the heat-conducting ring is connected to the temperature-sensitive elastic net rope, and the outer side is in direct contact with the environment.

[0012] The pressure-temperature gradient coupling sensor in the present application can be applied to the fields of aerospace, oil and gas extraction, new energy, automobile industry, and biological experimental research.

[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) it can accurately measure pressure and temperature gradients simultaneously, and has the advantages of high precision, high stability, and fast response speed; (2) it has a simple structure, small size, light weight, and is easy to install and use; (3) it adopts an airtight heat-insulating shell, which can effectively prevent the influence of the external environment on the sensor, thereby improving the reliability and stability of the sensor; (4) it adopts a multi-head flexible cathode wire, which can improve the flexibility and bending resistance of the sensor, and is suitable for adjusting the working range and sensitivity of the sensor; (5) it adopts an internal pressure regulating valve, which can accurately adjust the pressure inside the sensor, ensure the normal operation of the sensor, and adjust the internal and external pressure difference according to the needs of the application environment to change the threshold of the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the pressure-temperature gradient coupling sensor in the present invention.

[0015] Figure 2 is the outer contour dimension of the coupling sensor in one embodiment of the present invention.

[0016] Figure 3 The outer dimensions of the airtight and heat-insulated housing in one embodiment of the present invention.

[0017] Figure 4 Schematic diagram of a multi-head flexible cathode wire in one embodiment of the present invention.

[0018] Figure 5 Schematic diagram of a mesh-shaped temperature-sensitive elastic net rope in one embodiment of the present invention.

[0019] Figure 6 FIG. 4 is a schematic diagram of a pressure-sensitive elastic film according to an embodiment of the present invention.

[0020] Figure 7 It is a cross-sectional view of a transducer element in one embodiment of the present invention.

[0021] Figure 8 It is a schematic diagram of a transducer element in one embodiment of the present invention. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] In the following embodiments, the same or similar reference numerals throughout represent the same or similar components or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0024] In the description of the present invention, it should be understood that the terms: center, longitudinal, transverse, length, width, thickness, up, down, front, back, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and therefore cannot be understood as limiting the present invention. In addition, the terms: first, second, etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present invention, unless otherwise clearly specified and limited, the terms: install, connect, connect, etc. should be understood in a broad sense, and ordinary technicians in this field can understand the specific meanings of the above terms in this application according to the specific circumstances.

[0025] See also Figures 1 to 8 The present invention relates to a pressure-temperature gradient coupling sensor, comprising: a housing 1, the housing 1 providing airtightness and heat insulation functions; a tubular anode wire 2, which is arranged in the housing 1 and is an open tubular structure having an inner cavity; a multi-head flexible cathode wire 4, which is arranged in the housing 1 and in the inner cavity of the tubular anode wire 2; a power supply and signal line 3, which connects the tubular anode wire 2 and the multi-head flexible cathode wire 4 and is led out to the outside of the housing 1; a pressure-sensitive elastic film 6, which is placed in the housing 1 and is in an inflated state; a temperature-sensitive elastic net rope 5, which is wrapped around the pressure-sensitive elastic film 6. The pressure-sensitive elastic film 6 and the temperature-sensitive elastic net rope 5 are placed as a whole in the cage-like structure formed by the multi-head flexible cathode wire 4; there is a connection point between the multi-head flexible cathode wire 4 and the temperature-sensitive elastic net rope 5, and there is a connection point between the multi-head flexible cathode wire 4 and the pressure-sensitive elastic film 6; the transducer element 7, the part of which is in the housing 1 connects the pressure-sensitive elastic film 6 and the temperature-sensitive elastic net rope 5; the part of which is outside the housing 1 is used to sense the external pressure and temperature signals, and thus cause the state changes of the pressure-sensitive elastic film 6 and the temperature-sensitive elastic net rope 5. The housing 1 is provided with an internal pressure regulating valve 8 for adjusting the pressure inside the sensor.

[0026] In the present application, specifically, the transducer element 7 is connected to the housing 1 through its metal packaging shell 10, and is connected to a power source and a signal line through the housing 1 for transmitting signals, such as pressure signal data.

[0027] Furthermore, the temperature-sensitive elastic net rope 5 and the multiple-end flexible cathode wire 4 can be connected by a fixed connection method such as bundling. When the temperature-sensitive elastic net rope 5 changes, the length will be expanded and contracted, thereby pulling the multiple-end flexible cathode wire 4 and generating a signal. There is no direct connection between the pressure-sensitive elastic film 6 and the multiple-end flexible cathode wire 4.

[0028] The specific principle is as follows: the temperature-sensitive elastic net rope 5 is a flexible net cage, and there is no gap between it and the pressure-sensitive elastic film 6, which is tightly fitted; when the external temperature does not change, the temperature-sensitive elastic net rope 5 will not be able to produce a corresponding elongation, and the expansion of the pressure-sensitive elastic film 6 will not change the length of the temperature-sensitive elastic net rope 5 (the limit value can be designed according to the mechanical properties of the elastic film and the elastic net rope, and the principle will fail if it is greater than a certain limit value); similarly, when only the pressure-sensitive elastic film 6 shrinks, the total length of the temperature-sensitive elastic net rope 5 does not change, and the damping ring 42 is not subjected to the inward pulling force, and its position remains unchanged, achieving good isolation of temperature and pressure response. The single change of pressure and temperature in the temperature-pressure coupling sensor will not cause signal confusion, and therefore will not interfere with the output signal of the sensor.

[0029] Specifically, the various structural components and functions in this application are as follows.

[0030] (1) A housing 1 with airtight heat insulation function, which is used to protect the components inside the sensor and prevent the external environment from affecting the sensor. The airtight heat insulation housing is made of high-strength, high-temperature resistant, and corrosion-resistant materials, such as titanium alloy, ceramic, etc., and has good airtightness and heat insulation properties. The housing 1 can be a cylindrical hollow structure, and the shape and size of the airtight heat insulation housing can also be designed and processed according to the actual working environment.

[0031] (2) The tubular anode wire 2 is used to transmit power and signals, and also supports and fixes the internal components of the sensor; the tubular anode wire is made of a material with good electrical conductivity, such as copper, silver, etc., and has high strength and flexibility. The diameter and length of the tubular anode wire can be designed and processed according to the actual needs of the airtight insulation housing 1.

[0032] (3) Power and signal lines 3, which are used to provide power to the sensor and transmit signals. The power and signal lines are made of materials with good shielding performance, such as copper mesh, aluminum foil, etc., to prevent external interference. The length and specifications of the power and signal lines can be designed and processed according to the actual signal, current strength, sensitivity and other requirements.

[0033] (4) Multiple flexible cathode wires 4, of which there are generally 6 to 8 cathode wires, are used to connect the temperature-sensitive elastic net rope 5 and the pressure-sensitive elastic film 6. The multiple flexible cathode wires 4 are made of materials with good electrical conductivity, such as copper, silver, etc., and have high flexibility and bending resistance. Specifically, the multiple flexible cathode wires 4 are a cage-like structure, and the ends of each cathode wire are rotatably mounted on the perforated disk 41 through a damping ring 42, and can rotate freely around the center of the ring. According to the state changes of the pressure-sensitive elastic film 6 and the temperature-sensitive elastic net rope 5, it can be flexibly rotated to cause changes in the electrical signal and improve the detection sensitivity. The length and specifications of the cathode wire can be designed and processed according to the actual dimensions of the tubular anode wire 2 and the multiple flexible cathode wires 4.

[0034] (5) Temperature-sensitive elastic net rope 5, which is used to measure the temperature gradient. The temperature-sensitive elastic net rope is made of a material with temperature-sensitive properties, such as platinum-rhodium alloy, nickel-chromium alloy, etc. When the temperature changes, the resistance value of the temperature-sensitive elastic net rope will change. By measuring the change in the resistance value of the temperature-sensitive elastic net rope, the size of the temperature gradient can be obtained. Specifically, the spider web-shaped temperature-sensitive elastic net rope 5 has a length that is related to the external temperature. It is a natural length at room temperature, and the length changes caused by temperature changes are all relative to the natural length state, that is, it is shortened at low temperatures and elongated at high temperatures. The shape and size of the temperature-sensitive elastic net rope can be designed and processed according to the actual size of the tubular anode wire 2 in its natural state.

[0035] (6) A pressure-sensitive elastic film 6, which is used to measure pressure. The pressure-sensitive elastic film is made of a material with pressure-sensitive properties, such as silicone rubber, polyimide, etc. When the pressure changes, the deformation of the pressure-sensitive elastic film will change. By measuring the deformation change of the pressure-sensitive elastic film, the magnitude of the pressure can be obtained. Specifically, the pressure-sensitive elastic film 6 is in a natural state when the internal and external pressures are balanced, and the volume changes caused by the pressure changes are all relative to the natural state, that is, low pressure collapses and high pressure expands. The shape and size of the pressure-sensitive elastic film can be designed and processed according to the radial size of the sensor tubular anode wire 2.

[0036] (7) Transducer element 7, which is used to convert the physical changes of the temperature-sensitive elastic net rope and the pressure-sensitive elastic film into electrical signals. The transducer element uses a high-performance sensor chip, which has the advantages of high precision, high stability, and fast response speed. Specifically, the center of the transducer element 7 is a two-way overflow valve 9, the inner side of which is wrapped by the pressure-sensitive elastic film 6, and the outer side is in direct contact with the environment; the outer side of the transducer element 7 has a heat-conducting ring 11, such as Figure 8As shown in , its inner side is connected to the temperature-sensitive elastic net rope 5, and its outer side is in direct contact with the environment. The outermost part of the transducer element 7 is its metal packaging shell 10, which is connected to the housing 1 by means of threads or the like and is in direct contact with the environment. In this application, the transducer element 7 uses a high-performance sensor chip, such as a piezoelectric ceramic chip, a capacitive sensor chip, etc., which is installed at the center of the opposite end of the housing 1 connected to the wire, and is well sealed. The installation position and direction of the transducer element can be adjusted according to actual needs.

[0037] (8) An internal pressure regulating valve 8, which is used to adjust the pressure inside the sensor to ensure the normal operation of the sensor. The internal pressure regulating valve adopts a high-precision regulating valve, such as an electric regulating valve, a pneumatic regulating valve, etc., which can accurately adjust the pressure inside the sensor. Specifically, the internal pressure regulating valve 8 is installed on the side wall of the cylindrical surface near the bottom surface on the same side as the transducer element 7 of the housing 1. The installation position and direction of the internal pressure regulating valve can be adjusted according to actual needs.

[0038] Attached Figure 2 and attached Figure 3 , the dimensions of the sensor in a specific implementation scheme of the present application are shown, wherein: the length a of the sensor is 25 mm, the diameter b is 18 mm, the length d of the housing 1 of the sensor is 20 mm, and the thickness c of the end face of the housing 1 is 2 mm.

[0039] The working principle of the sensor in this application is as follows.

[0040] (1) Temperature measurement principle: The temperature-sensitive elastic net rope is made of a material with temperature-sensitive properties. When the temperature changes, the resistance value of the temperature-sensitive elastic net rope will change. By measuring the change in the resistance value of the temperature-sensitive elastic net rope, the size of the temperature gradient can be obtained.

[0041] (2) Principle of pressure measurement: The pressure-sensitive elastic film is made of a material with pressure-sensitive properties. When the pressure changes, the deformation of the pressure-sensitive elastic film will change. By measuring the deformation change of the pressure-sensitive elastic film, the pressure can be obtained.

[0042] (3) Signal conversion principle: The transducer element converts the physical changes of the temperature-sensitive elastic net rope and the pressure-sensitive elastic film into electrical signals. The transducer element uses a high-performance sensor chip with the advantages of high precision, high stability, and fast response speed.

[0043] (4) Signal transmission principle: The power supply and signal lines transmit the electrical signals converted by the transducer elements to external devices, such as data acquisition devices, computers, etc. The power supply and signal lines are made of materials with good shielding properties to prevent external interference.

[0044] The sensor in this application can be applied to the following fields.

[0045] (1) Aerospace: Pressure-temperature gradient coupled sensors play a key role in monitoring aircraft engines. The working environment inside the engine is extremely complex, and it is necessary to monitor changes in pressure and temperature simultaneously to ensure its normal operation and safety. For example, sensors can be installed in key parts of the engine such as the combustion chamber and turbine to monitor changes in pressure and temperature gradients in the combustion chamber in real time. By analyzing these data, potential engine failure hazards, such as uneven combustion and overheating, can be discovered in a timely manner, providing protection for the safe flight of the aircraft. At the same time, in the thermal control system of spacecraft, coupled sensors can monitor changes in pressure and temperature at different locations on the surface and inside of the spacecraft, help optimize thermal control design, and ensure that the spacecraft maintains appropriate operating temperature and pressure conditions in the extreme space environment.

[0046] (2) Oil and gas extraction: During the drilling and production of oil and gas wells, the pressure and temperature changes in the well are crucial to the efficiency and safety of extraction. Pressure-temperature gradient coupling sensors can be installed in downhole tools to monitor the pressure and temperature distribution in the well in real time. This helps engineers understand the characteristics of the formation and the flow of fluids, and optimize drilling and production strategies. For example, by monitoring the changes in pressure and temperature, the location and thickness of the oil layer, as well as the flow direction and speed of oil and gas, can be determined, thereby improving the recovery rate of oil and gas. In oil and gas transmission pipelines, coupling sensors can monitor the pressure and temperature changes in the pipeline and promptly detect pipeline leaks, blockages and other problems. By analyzing the pressure and temperature data, the wear and remaining life of the pipeline can be predicted, providing a basis for pipeline maintenance and replacement.

[0047] (3) New energy field: In solar thermal power generation systems, pressure-temperature gradient coupling sensors can monitor pressure and temperature changes in the collector and heat storage system. This helps optimize the operating efficiency of the system and improve the utilization efficiency of solar energy. For example, by monitoring the pressure and temperature in the collector, the angle of the collector and the tracking system can be adjusted to ensure maximum absorption of solar energy. At the same time, in the heat storage system, sensors can monitor the temperature and pressure changes of the heat storage medium to ensure the safe operation of the heat storage system.

[0048] In wind power generation systems, coupling sensors can monitor the pressure and temperature changes of key components such as the gearbox and bearings of wind turbines. This helps to promptly detect potential equipment failures and improve the reliability and operating efficiency of wind turbines. For example, by monitoring the pressure and temperature in the gearbox, the wear and lubrication status of the gears can be determined, and maintenance can be performed in a timely manner.

[0049] (4) Automobile industry: The working state of automobile engines has a significant impact on the performance and fuel economy of vehicles. Pressure-temperature gradient coupling sensors can be installed in the engine's intake duct, combustion chamber, exhaust pipe and other parts to monitor the pressure and temperature changes inside the engine in real time. By analyzing these data, the engine's combustion process can be optimized and the engine's power output and fuel economy can be improved. For example, by monitoring the pressure and temperature in the intake duct, the intake volume and injection time can be adjusted to achieve the optimal air-fuel ratio and improve combustion efficiency.

[0050] In the engine's cooling system, the coupling sensor can monitor the pressure and temperature changes of the coolant to ensure that the engine operates within the appropriate temperature range. If the coolant temperature is too high or the pressure is too low, the sensor can issue an alarm in time to remind the driver to check and repair to avoid engine overheating and damage.

[0051] Tire pressure and temperature have a significant impact on vehicle driving safety and performance. Pressure-temperature gradient coupled sensors can be installed inside tires to monitor tire pressure and temperature changes in real time. Through wireless transmission technology, the monitoring data is transmitted to the vehicle's dashboard or smartphone, so that the driver can know the status of the tire at any time. If the tire pressure is too low or the temperature is too high, the sensor can issue an alarm in time to remind the driver to check and adjust it to avoid traffic accidents caused by tire failure.

[0052] (5) Biomedical field: In some medical equipment, such as ventilators and anesthesia machines, it is necessary to monitor pressure and temperature parameters simultaneously to ensure the normal operation of the equipment and the safety of patients. Pressure-temperature gradient coupling sensors can be installed in key parts of these devices to monitor the pressure and temperature changes of gases in real time. For example, in ventilators, sensors can monitor the pressure and temperature of respiratory gases to ensure that patients can get appropriate respiratory support. In anesthesia machines, sensors can monitor the pressure and temperature of anesthetic gases to ensure the safety and effectiveness of anesthesia.

[0053] In medical monitoring equipment, such as sphygmomanometers and thermometers, pressure-temperature gradient coupled sensors can also be used to improve the accuracy and reliability of measurements. For example, in an electronic sphygmomanometer, the sensor can simultaneously monitor the pressure in the cuff and the patient's body surface temperature. By analyzing these data, the patient's blood pressure value can be measured more accurately.

[0054] (6) Biological experimental research: In biological experimental research, the pressure and temperature of the experimental environment need to be precisely controlled and monitored. Pressure-temperature gradient coupling sensors can be installed in experimental equipment such as bioreactors and incubators to monitor the pressure and temperature changes of the experimental environment in real time. By analyzing these data, the experimental conditions can be optimized and the accuracy and reliability of the experimental results can be improved. For example, in cell culture experiments, sensors can monitor the pressure and temperature in the incubator to ensure that cells grow and reproduce in a suitable environment.

[0055] It can be seen from the above description that the present invention proposes a pressure-temperature gradient coupling sensor, which has a simple structure, small size, light weight, and is easy to install and use. It can accurately measure pressure and temperature gradients at the same time, and has the advantages of high precision, high stability, and fast response speed. It can be widely used in industrial production, environmental monitoring, aerospace and other fields.

[0056] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. A pressure-temperature gradient coupling sensor, characterized in that: include: An outer shell (1), wherein the outer shell (1) provides airtightness and heat insulation functions; A tubular anode wire (2) is arranged in the housing (1) and is an open tubular structure having an inner cavity; A multi-head flexible cathode wire (4) disposed in the housing (1) and in the inner cavity of the tubular anode wire (2); A power supply and signal line (3), which is connected to the tubular anode wire (2) and the multi-head flexible cathode wire (4) and is led out to the outside of the housing (1); A pressure-sensitive elastic film (6) is placed in the housing (1) and is in an inflated state; A temperature-sensitive elastic net rope (5) is coated on a pressure-sensitive elastic film (6); the pressure-sensitive elastic film (6) and the temperature-sensitive elastic net rope (5) are placed as a whole in a cage-like structure formed by a multi-head flexible cathode wire (4); a connection point is provided between the multi-head flexible cathode wire (4) and the temperature-sensitive elastic net rope (5), and a connection point is provided between the multi-head flexible cathode wire (4) and the pressure-sensitive elastic film (6); A transducer element (7), the portion of which located in the housing (1) is connected to the pressure-sensitive elastic film (6) and the temperature-sensitive elastic net rope (5); and the portion of which located outside the housing (1) is used to sense external pressure and temperature signals, thereby causing the state of the pressure-sensitive elastic film (6) and the temperature-sensitive elastic net rope (5) to change; The ends of the multi-head flexible cathode wire (4) are rotatably mounted on the perforated disc (41) via a damping ring (42); The center of the transducer element (7) is a two-way overflow valve (9), the inner side of which is wrapped by the pressure-sensitive elastic film (6); the outer ring of the transducer element (7) is provided with a heat-conducting ring (11), the inner side of the heat-conducting ring (11) is connected to the temperature-sensitive elastic mesh rope (5), and the outer metal packaging shell (10) of the transducer element (7) is connected to the outer shell (1) and is in direct contact with the environment.

2. A pressure-temperature gradient coupling sensor according to claim 1, characterized in that: The outer shell (1) is provided with an internal pressure regulating valve (8).

3. A pressure-temperature gradient coupling sensor according to claim 1, characterized in that: The number of the multi-head flexible cathode wires (4) is 6 to 8.

4. A pressure-temperature gradient coupling sensor according to claim 1, characterized in that: The temperature-sensitive elastic net rope (5) has a spider web-like structure.

5. Application of the pressure-temperature gradient coupling sensor according to any one of claims 1 to 4 in the field of aerospace.

6. Application of the pressure-temperature gradient coupling sensor according to any one of claims 1 to 4 in the field of oil and natural gas extraction.

7. Application of the pressure-temperature gradient coupling sensor according to any one of claims 1 to 4 in the field of new energy.

8. Application of the pressure-temperature gradient coupling sensor according to any one of claims 1 to 4 in the automotive industry.

9. Application of the pressure-temperature gradient coupling sensor according to any one of claims 1 to 4 in the field of biological experimental research.

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