91 results about "Thin film sensor" patented technology

A device and method for representing the foam porosity state of foamed lightweight soil with self-adjusting beams, and relates to the technical field of sound absorption coefficients measurement; the device includes a standing wave tube, a plurality of polyvinylidene fluoride piezoelectric films, a sensor, an exciter, a push-pull handle, an adjustable telescopic tube, a foamed lightweight soil detection material, a charge amplifier, a data memory, a data adapter, a signal generator, an adaptive power amplifier board, and a PC computer; the device of the invention has low cost, long service life, high measurement accuracy, relatively simple production process, and can be applied to different scenarios.

The invention belongs to the technical field of gas sensors, and discloses a portable ratio fluorescent film sensor for visual detection of oxygen as well as a preparation method and application of the portable ratio fluorescent film sensor. According to the sensor, polymethyl methacrylate is used as a base material, a carbon dot emitting blue light is used as a fluorescent indicator, protoporphyrin emitting red light is used as a fluorescent reference agent, and the two materials are physically blended to form a blue-red dual-emission system; under the excitation of 365nm ultraviolet light, the oxygen concentration affects the yield of active oxygen, the active oxygen quenches the fluorescence of the carbon dots, the fluorescence of protoporphyrin is stable, and the sensor gradually changes from blue violet to red. Meanwhile, the invention discloses an oxygen quantitative / semi-quantitative detection method of the sensor. The preparation process is simple, the cost is low, the detection operation is simple and convenient, the anti-interference performance is strong, the high-sensitivity visual portable detection of the oxygen concentration can be realized, and the sensor is suitable for the fields of food packaging, medical monitoring, industrial safety and the like, and has the potential of large-scale production and commercial application.

The invention provides a hafnium-zirconium-oxygen film, a preparation method thereof and a hafnium-zirconium-oxygen film sensor, and belongs to the technical field of piezoelectric sensors, the hafnium-zirconium-oxygen film is prepared from a hafnium-zirconium-oxygen material, the chemical general formula of the hafnium-zirconium-oxygen material is Aly-HfxZr1-xO2, x is greater than or equal to 0.3 and less than or equal to 0.7, and y is greater than or equal to 0.02 and less than or equal to 0.08. The lead-free hafnium-based oxide is selected as a piezoelectric core, HfxZr1-xO2 is adopted as a matrix, Al is doped to stabilize an orthogonal ferroelectric phase and inhibit oxygen vacancy, d33 = 85-95 pC / N within the thickness range of 10-200 nm and reaches 90% of that of an existing PZT film, and the Curie temperature is increased to 600 DEG C and is greatly increased compared with 350 DEG C of the PZT film. And the material is completely free of lead and conforms to the RoHS instruction.

The invention belongs to the field of film sensors, and discloses a preparation method of a lanthanum aluminate / strontium titanate nanostructure for hydrogen detection, which comprises the following steps: preparing a strontium titanate single crystal substrate, depositing a single crystal epitaxial lanthanum aluminate film on the strontium titanate single crystal substrate by pulse laser to obtain a single crystal epitaxial lanthanum aluminate / strontium titanate material; then, a stripe-shaped periodic surface nanostructure is formed on the surface of the single crystal epitaxial lanthanum aluminate thin film through femtosecond laser induction, a lanthanum aluminate / strontium titanate nanostructure is obtained, and then precious metal nanoparticles are deposited on the surface of the lanthanum aluminate / strontium titanate nanostructure. According to the preparation method, the highly-ordered single-crystal lanthanum aluminate / strontium titanate heterogeneous film is obtained by accurately controlling pulse laser deposition process parameters, and a nano stripe periodic structure is prepared on the surface of lanthanum aluminate by accurately controlling pulse femtosecond laser processing parameters, so that the specific surface area is effectively increased, gas adsorption sites are increased, and the specific surface area of the lanthanum aluminate / strontium titanate heterogeneous film is increased. And the gas charge transmission capability of the lanthanum aluminate / strontium titanate interface two-dimensional electron gas is improved.

The present application relates to a kind of device and method for measuring solid-liquid two-phase flow dynamics information, including measuring plate, glass plate, pore pressure sensor, filter screen, triaxial force sensor, force plate, outer pressure strip, inner pressure strip, sealing film, sensor bracket, dynamics information includes the pressure of liquid component in two-phase flow and the force of overall to force plate;The present application can ensure fluid seal when the mechanical sensor is reasonably measured dynamics information;Meanwhile, the present application can also realize the simultaneous measurement of solid-liquid two-phase flow kinematics and dynamics information by mechanical sensor cooperation high-speed camera technology.

The application discloses a sheet type integrated platinum film heat flow sensor for a hypersonic shock tunnel, which comprises a glass substrate in a sheet shape, a plurality of platinum thin film lines arranged on the surface of the glass substrate along the width direction of the glass substrate, and silver paste contacts corresponding to the platinum thin film lines arranged on the side edges of the glass substrate and electrically connected with the platinum thin film lines, wherein the end of the silver paste contact away from the platinum thin film line is used for welding a lead wire. The sheet type integrated platinum thin film line resistance sensor has the characteristics of high frequency response of a two-millimeter-diameter thin film sensor. After the thickness of the glass substrate as a sensor bearing substrate is reduced, the sensor can be applied to a particularly thin part of an aircraft for heat measurement, and a measurement point with a gradient range is formed on the glass substrate, so that the aerodynamic heat of the aircraft surface with a certain gradient can be measured.

The application relates to the technical field of temperature measurement, and discloses a distributed temperature measurement method for the surface of a solid oxide fuel cell unit, which comprises the following steps: preparing a PDC thin film temperature sensor array on the surface of the solid oxide fuel cell, so as to realize distributed measurement of the surface temperature of the solid oxide fuel cell; wherein the PDC thin film temperature sensor array comprises a transition layer, an insulation layer, a sensitive layer, a wire layer, a bonding pad, a protective layer and a lead connection structure; the transition layer is arranged above the cathode, the anode or the electrolyte of the solid oxide fuel cell, the insulation layer covers the top of the transition layer, the sensitive layer, the wire layer and the bonding pad are all arranged above the insulation layer, the sensitive layer comprises an array of multiple temperature sensitive units, the lead connection structure is connected with the wire layer through the bonding pad, and the protective layer covers the top of the sensitive layer and the wire layer. The application can reduce process steps and improve the compatibility of the thin film sensor and the solid oxide fuel cell material.

A kind of space micro debris monitoring micro-nano satellite based on double-layer film sensor.The satellite carries out bidirectional verification through non-vision in-situ measurement of double-layer film sensor and visual measurement of monitoring camera, carries out monitoring on space micro debris with size less than 1 cm, obtains data information such as velocity vector of debris, and provides real-time and accurate micro debris cloud data.The normal direction of satellite film is the same as the direction of satellite speed, which increases the probability of collision monitoring between satellite and space micro debris.The folding and unfolding mechanism adopted by the present application has small folding volume and is convenient to unfold, and can be used as a debris monitoring device and satellite de-orbit device commonly installed in micro-nano satellite module, and has double functions.The locking-releasing mechanism adopted by the present application can realize locking of the whole mechanism only by using small pre-tightening force, and the design of burning rope release can reduce the separation impact to the minimum, and improve the stability and safety of the system.

The invention provides a sensor packaging structure and an ultrasonic gas flowmeter. The ultrasonic gas flowmeter comprises a sensor structure and an acoustic structure. The sensor packaging structure comprises one or more thin film sensors, an interconnection layer and an interface layer. On one hand, the sensor structure and the acoustic structure are separately designed and are connected through the interface layer, so that the film sensor can be independently manufactured, and the production efficiency is improved. On the other hand, due to the double-layer stacked structure of the two PCB layers, the interconnection layer provides enough rigidity and support, circuit connection and mechanical interface functions are achieved together with the interface layer, and the structure is stable. And on the other hand, the total packaging thickness is smaller than the thickness of the acoustic structure, so that when the packaging structure is mounted at the inlet of the acoustic structure, the surface of the vibrating diaphragm of the thin film sensor does not contact or collide with the inner wall of the acoustic structure, sensor damage caused by mechanical stress is avoided, sound waves can enter an acoustic channel without hindrance, and the reliability of the sensor is improved. And normal operation of the film sensor is ensured.

The invention discloses a general high-precision fixed-point static recognition detection box, an electronic nose and a control method thereof, and the electronic nose comprises the general high-precision fixed-point static recognition detection box and a filter assembly. By adopting the high-precision universal static recognition detection box, the electronic nose and the control method thereof, the type of each gas detection film sensor can be adaptively adjusted according to the type of the detected gas and the detection environment; the position of the detection space can be adjusted, so that the operation convenience is greatly improved; the detection space can be equivalent to the effect of multiple redundant tests through one test; meanwhile, when the detected gas is sucked into the detection space, the detected gas can be filtered through the corresponding filters in sequence, and interference gas and impurities are filtered out; the filter element of each stage of filter has self-checking and self-cleaning functions; the ratio of detected gas can be compressed, so that the detection requirements of some specific rarefied gas are met; the whole device is extremely compact, and the application requirements of miniaturization and modularization are met.

The application discloses a piezoelectric film sensor algorithm calibration system and application thereof, and particularly relates to the technical field of sensors, which comprises a pressure input unit, an output end of the pressure input unit is electrically connected with an input end of a sensor unit, an output end of the sensor unit is electrically connected with an input end of a pressure acquisition unit, an input end of the pressure acquisition unit is electrically connected with an output end of the pressure input unit, and an output end of the pressure input unit is electrically connected with an input end of a waveform processing unit. The application adopts the waveform processing unit to realize the oscillation caused by the dispersion effect in the shock wave waveform in the pressure input process, so that the waveform has obvious wave peaks, the impact force in the input process is more accurate, the influence of the chaotic waveform on the input pressure value measurement is reduced, the calibration algorithm is adopted to realize the rapid calibration process of the sensor itself, and the accuracy calibration confirmation when leaving the factory and the re-calibration after the sensor maintenance are realized.

The invention belongs to the technical field of tooth adjacent surface contact area detection, and particularly discloses a tooth adjacent surface contact area thin film sensor detection device which comprises a thin film pressure sensor module, a data acquisition module, a signal processing module, a display module and a data storage and transmission module. The signal processing module is respectively connected with the data acquisition module, the display module and the data storage and transmission module; the thin film pressure sensor module is of an array structure composed of a plurality of sub-sensors, and each sub-sensor has a unique position code and is used for collecting pressure signals of a tooth adjacent surface contact area and outputting resistance change signals with position information. The problems that an existing sensor array cannot form a high-precision shape contour, cannot be spliced into a continuously measurable contact shape and cannot output shape parameters of a tooth adjacent surface contact area, and the requirements of orthodontics, repair and the like for accurate design of the adjacent surface contact shape are difficult to meet are solved.

This invention discloses a method for fabricating a photonic crystal hydrogel film sensor with a self-reporting elastic modulus function and its application. The method involves fabricating a hydrogel film with a periodic photonic crystal structure and constructing a bio-interface on its surface that can dynamically regulate cell adhesion, detachment, spreading, migration, proliferation, and differentiation. An optical imaging system is used to acquire images of the structural color changes of the photonic crystal hydrogel film. Image processing extracts color parameters, which are then converted into changes in reflected wavelength and the film deformation field. The elastic modulus of the film is calculated by inverting the deformation field generated by microspheres of known mass placed on the film surface, combined with an elasticity model. By combining the cell-interface interaction deformation field, the cell-interface interaction force and its spatial distribution can be obtained. A photonic crystal hydrogel film sensor with a self-reporting hardness function is constructed. This method achieves integrated biomechanical research combining dynamic regulation and real-time monitoring, offering advantages such as non-destructive operation, real-time imaging, and acquisition of mechanical spatial distribution.

A coating system to be used as thin film sensor includes a piezoresistive sensor element. The piezoresistive sensor element is a layer embedded in the coating system. The coating system is deposited on a surface of a substrate. The piezoresistive sensor element comprises at least one hydrogen free tetrahedral amorphous carbon coating doped with a ta-C:X coating layer, where X is one or more chemical elements selected from the elements groups 13 and 15 of periodic table of elements, wherein the ta-C:X coating layer exhibits an anisotropic gage factor.

The invention discloses a multifunctional conductive sponge, a flexible pressure sensor, and preparation methods and applications of the multifunctional conductive sponge and the flexible pressure sensor. The preparation method of the functional conductive sponge comprises the following steps: uniformly mixing nano-crystalline cellulose, nano-graphite flakes and a solvent, putting the sponge into aerogel precursor liquid for dipping treatment, then drying at a high temperature, putting the sponge into the aerogel precursor liquid for dipping treatment again, then pre-freezing, and then freeze-drying to obtain a composite elastomer of aerogel and the sponge; the composite elastomer of the aerogel and the sponge is placed in a PDMS impregnant to be subjected to impregnation treatment, then high-temperature drying is conducted, and the multifunctional conductive sponge is obtained. According to the invention, common polyurethane sponge is used as a base material of the sensor, and a pressure sensing device and a furniture filling material are integrated, so that the sensor has excellent flexibility, compressibility, large porosity and air permeability, and the problems of damage pressure relief and damp-heat blocking caused when a traditional film sensor and a fabric sensor are used for an intelligent bed are solved.

The application discloses a kind of noble metal COF-LZU MOS quantum grain carbon nanotube composite film sensor and preparation method, the composite film with carbon nanotube as substrate, metal oxide semiconductor quantum grain, covalent organic framework compound COF-LZU and noble metal are sequentially loaded on substrate, the sensor with sensor device as substrate, noble metal COF-LZU MOS quantum grain carbon nanotube composite film is deposited on the surface of substrate, and can be used to detect acetone.The application uses noble metal COF-LZU MOS quantum grain carbon nanotube composite film as sensitive layer and applies in acetone (CP) gas-sensitive sensor, the composite film has low working temperature, high sensitivity to gas, high selectivity to acetone, good repeatability, good stability, low cost, simple preparation method, and can be mass-produced.

The invention discloses an exoskeleton fingertip integrating a fingertip sensing function and a vibration feedback capability. The exoskeleton fingertip can provide stable fingertip pressing force sensing and corresponding vibration feedback capability. The fingertip interaction force sensing part of the fingertip is composed of a hard fingertip pressing plate, a soft silica gel gasket and a group of piezoresistive film sensor arrays, and the vibration feedback part of the fingertip module is provided with vibration feedback by a vibration motor. By controlling the frequency, the amplitude and the duty ratio of the vibration motor, the simulation of the feeling of tangential force, sliding speed, textures during interaction and the like is realized respectively. According to the design, more stable fingertip force and touch feedback can be provided for the hand exoskeleton, so that more stable and finer hand teleoperation is performed, and the experience feeling of an exoskeleton user is improved.

The embodiment of the invention provides an electrocardiogram processing method and device based on a wearable thin film sensor, the wearable thin film sensor comprises a main sensor and an auxiliary sensor, and the method comprises the steps that original electrocardiosignals of a single channel collected by the main sensor are obtained, and original electrocardiosignals of the single channel collected by the auxiliary sensor are obtained; the method comprises the following steps: synchronously acquiring an auxiliary reference signal which interferes with an original electrocardiosignal, performing interference correction on the original electrocardiosignal based on the auxiliary reference signal to obtain a target electrocardiosignal, performing spatial-temporal feature extraction on the target electrocardiosignal based on a pre-trained deep learning model to obtain spatial-temporal features, and outputting the spatial-temporal features. And performing lead mapping processing on the spatial-temporal characteristics to obtain a standard lead electrocardiogram. Therefore, the high-quality electrocardiogram is generated based on the single-channel electrocardiosignal, the accuracy of reconstructing the standard lead signal is improved, and the convenience and accessibility of electrocardiogram monitoring are improved.

An embedded rolling bearing having a source-end parameter acquisition system. The embedded rolling bearing comprises: a bearing (6), an accommodating recess being provided on an outer peripheral surface of the bearing (6); a thin-film sensor assembly (1), which is formed in the accommodating recess and comprises a PDC-ITO strain element (12), a PDC-Pt temperature element (13), a PDC-PZT piezoelectric thin film (14) and a plurality of bonding pads (11) respectively matching the PDC-ITO strain element (12), the PDC-Pt temperature element (13) and the PDC-PZT piezoelectric thin film (14); an acquisition microstructure (3), which is arranged in the accommodating recess and comprises a PCB and a functional chip formed on the PCB and electrically connected to the plurality of bonding pads (11) by means of a plurality of electrical interconnection sockets (2); a thermal-insulation potting adhesive (4), which is poured into the accommodating recess; and a metal cover (5). Further provided is a manufacturing method for the embedded rolling bearing having a source-end parameter acquisition system. The drawbacks of restrictions on the shape and size of conventional external sensors and collectors are avoided.

The utility model relates to the technical field of lipstick shells, and discloses a lipstick shell pressure sensing anti-collision buffer layer which comprises an outer layer assembly, a middle layer assembly penetrates through the inner side of the top of the outer layer assembly, a fixing cylinder penetrates through the inner side of the middle layer assembly, a spiral assembly penetrates through the inner side of the fixing cylinder, and the spiral assembly penetrates through the inner side of the middle layer assembly. The inner side of the spiral assembly penetrates through and is slidably connected with a limiting assembly, and the bottom of the inner side of the limiting assembly penetrates through and is slidably connected with a lifting assembly. The buffer holes are formed in the side wall of the shell of the middle layer assembly, so that impact force can be effectively dispersed, and local pressure is reduced; the buffer assembly and the pressure-sensitive film sensor between the outer layer assembly and the middle layer assembly can accurately sense the change of external pressure and make a response rapidly, the STF composite material is soft in a normal state, does not affect use, is instantly hardened under pressure, efficiently absorbs and disperses impact force, protects the internal structure of the lipstick shell and the lipstick paste in an all-round mode, and is safe and reliable. And the daily collision resistance of the lipstick is improved.

The invention aims to provide a jig for measuring the disengagement force of a mobile phone outer cover and a test method. The device comprises a rack, the rack is provided with a mobile module and a vacuum system, an action end of the mobile module is provided with a mounting plate, the mounting plate is used for positioning a to-be-tested product, the to-be-tested product comprises a mobile phone frame and a mobile phone upper cover, an inflation bag is arranged in an interlayer between the mobile phone frame and the mobile phone upper cover, and the inflation bag is provided with an air inlet and an air outlet. The vacuum system is communicated with the inflatable bag, a thin film sensor is attached to the surface of the inflatable bag, and the thin film sensor is used for collecting expansive force data; the upper end of the mobile phone upper cover is provided with a contact displacement sensor, and the contact displacement sensor is used for detecting and collecting displacement data of the mobile phone upper cover. The invention is applied to the technical field of electronic product testing.

The invention provides a piezoelectric thin film sensor and a method for manufacturing the piezoelectric thin film sensor, which can suppress springback even when the piezoelectric thin film sensor is adhered to a curved surface portion of an adherend. The piezoelectric thin film sensor is a laminate structure in which a piezoelectric thin film, a first electrode, a second electrode, and a first base material are laminated, the piezoelectric thin film having a first main surface and a second main surface, the first electrode being disposed on the first main surface, the second electrode being disposed on the second main surface, the first base material being disposed between the second electrode and an adherend, and the second base material being disposed between the second electrode and the adherend. The piezoelectric thin film sensor is characterized in that the laminate structure is curved in a convex shape in a first direction from the first substrate toward the first electrode in a cross-sectional view.

The invention belongs to the technical field of thin film sensors, and relates to a composite thin film strain sensor for battery bump monitoring and a manufacturing method thereof, and the composite thin film strain sensor comprises a current collector, an isolation layer, a strain layer support, a first protection layer, a composite strain sensitive layer and a second protection layer which are sequentially arranged from bottom to top, the electrode connecting layer is arranged between the first protective layer and the second protective layer and is used for electrically connecting the composite strain sensitive layer; the composite strain sensitive layer comprises a first strain layer and a second strain layer, different stresses are arranged in the first strain layer and the second strain layer, so that directional curling of the composite strain sensitive layer is realized, internal deformation of the battery is converted into resistance change, the resistance change is output through the electrode connecting layer, and in-situ monitoring of the battery bump is realized. The device is compatible with a battery packaging process, can be implanted into the battery without damaging the sealing performance of the battery, and avoids the problems of drilling risk and stress concentration caused by a fiber bragg grating, thereby basically having no influence on the performance of the battery.

The utility model is suitable for sensor technical field provides a kind of pressure response integration film sensor, including substrate, lead-out circuit, conductive sensing paste and pressure response paste;Lead-out circuit, conductive sensing paste and pressure response paste are all covered on substrate by printing process, such integrated design can reduce the overall thickness of sensor, and reduce economic cost;Pressure response paste forms pressure zone on substrate, and according to the change of resistance value, the stress change under the static state of sensor is monitored quickly;Conductive sensing paste forms piezoelectric zone on substrate, and according to the change of voltage value, the stress change under the dynamic state of sensor is monitored quickly.

This invention discloses an exoskeleton fingertip integrating fingertip sensing and vibration feedback capabilities, providing stable fingertip pressure sensing and corresponding vibration feedback. The fingertip interaction force sensing component consists of a rigid fingertip pressing plate, a soft silicone pad, and a piezoresistive thin-film sensor array. The vibration feedback component of the fingertip module provides vibration feedback via a vibration motor. By controlling the frequency, amplitude, and duty cycle of the vibration motor, the magnitude of tangential force, sliding speed, and texture sensations during interaction are simulated. This design provides more stable fingertip force and tactile feedback for the hand exoskeleton, enabling more stable and precise hand teleoperations and improving the user experience.

The application discloses a cylindrical front body ceramic thin film temperature sensor and a preparation device and a preparation method thereof, and the temperature sensor comprises a cylindrical substrate, a ceramic thin film sensitive grid, a welding spot, a lead wire and a fixing part, the ceramic thin film sensitive grid and the welding spot are conformally laid on the cylindrical substrate through a curved surface weissenberg direct writing forming technology and are prepared through pyrolysis and ceramicization, the welding spot is arranged on the ceramic thin film sensitive grid, the lead wire is connected with the welding spot, and the fixing part is covered on the welding spot. The application can realize in-situ preparation of the ceramic thin film temperature sensor on a cylindrical substrate such as a bearing and a bolt, the sensor has the advantages of in-situ nondestructive detection, strong resistance to extreme environment and less influence on surface characteristics of a structure to be measured, and the preparation device and the method have the advantages of high cylindrical patterning efficiency and simple process, thereby providing a new idea for popularization of high-temperature thin film sensors to practical application.

The application provides a smart monitoring mattress with a graphene self-heating sleep-aiding function, and relates to the field of smart home and health monitoring.The smart monitoring mattress comprises a mattress main body, a graphene self-heating layer, sleep-aiding traditional Chinese medicine, a piezoelectric film sensor array, a main control unit, a communication module, a display module and a reminding module.The graphene self-heating layer is arranged inside the mattress main body and is used for releasing far infrared radiation under the stimulation of human body temperature.The sleep-aiding traditional Chinese medicine is arranged inside the mattress main body and is located outside the graphene self-heating layer and is spatially coupled with the graphene self-heating layer to form a composite sleep-aiding structure.The graphene self-heating material and the sleep-aiding traditional Chinese medicine are innovatively combined to form a composite sleep-aiding system with a synergistic effect.The piezoelectric film sensor array is integrated to realize the real-time and non-contact detection of core physiological characteristic data of a user, such as heart rate, breathing frequency and body movement.

The application belongs to the field of nanometer materials, and discloses a kind of silver nanowires with high purity and high aspect ratio and its preparation method and application.The method comprises the following steps: template agent is dissolved in reducing agent, heated to initial temperature 80-110 DEG C under stirring dissolution, and a transparent solution is obtained; control agent solution and silver salt solution are added to the transparent solution, the reaction vessel is sealed, and the solution is fully reacted from white to red brown; the reaction solution is heated to 140-160 DEG C for the second time, and the silver nanowires with high purity and high aspect ratio are obtained after full reaction.The impurities of the obtained silver nanowires are close to 0, the aspect ratio reaches 2000, and the application of the silver nanowires as a filler of composite material in the fields of transparent conductive film, sensor, solar cell and surface enhanced raman scattering.

The invention discloses a device and a method for measuring a nonlinear coefficient and an attenuation coefficient of main beam surface wave detection, relates to the technical field of cranes, solves the problem that online measurement of fatigue damage state evaluation parameters of a crane main beam is difficult to realize, and comprises a piezoelectric surface wave transducer and two dual-electrode piezoelectric film sensors, all the pressing plates press the to-be-detected surface of the to-be-detected steel plate; the dual-electrode piezoelectric film sensor closer to the piezoelectric surface wave transducer is a first sensor, and the dual-electrode piezoelectric film sensor farther from the piezoelectric surface wave transducer is a second sensor; the piezoelectric surface wave transducer is used for exciting surface waves, the first sensor and the second sensor are used for receiving the surface waves, and the measuring device is fixed through the magnet, convenient to assemble and disassemble, reliable in fixation, small in size and capable of adapting to the working environment of the crane.

[Problem] To provide a catheter for image acquisition in which bonding strength between an outer tube, a film sensor, and a support is increased. [Solution] A catheter (100) for image acquisition includes: an inner tube (10) having a first lumen (15) extending in the axial direction; a sensor unit (30) arranged at a tip-end portion (11) of the inner tube and having a plurality of transducers (45a) circumferentially arranged in a ring shape, the transducers for transmitting and receiving ultrasound within a biological lumen; and an outer tube (20) arranged so as to cover at least a portion of the inner tube at a position closer to the base-end side than the sensor unit so as to form a second lumen (25) between the sensor unit and the inner tube. The sensor unit includes a film sensor (40) having a plurality of transducers arranged thereon, and a support (50) for supporting the film sensor, where at least a portion of the film sensor is sandwiched between the support and the outer tube.