41results about How to "Realize the sensing function" patented technology

The invention relates to a composite sensing material consisting of an organic metal complex and a fluorescent conjugated polymer, a preparation method and application. The composite sensing material is characterized by consisting of the fluorescent conjugated polymer and the organic metal complex, wherein the molar ratio of the fluorescent conjugated polymer to the organic metal complex ranges from 1000:1 to 100:1 during physical direct mixing; the fluorescent conjugated polymer serves as a donor, the organic metal complex serves as an acceptor, and charge transfer or energy transfer should be allowed between the two; and the ratio of the fluorescent conjugated polymer to the organic metal complex is 300:1 to 500:1. The composite sensing material can be prepared by using the physical direct mixing or covalent bond connection. The material comprises environmental pollutants, drugs, chemical substances, biological substances and the like, and particularly explosives in the chemical substances, drugs, proteins and nucleic acids in biological substances and the like.

The invention discloses an ion sensor based on MXene electrodes. The invention relates to the technical field of flexible ion sensors. The ion sensor comprises an ionic polymer film and two electrodelayers containing MXene, the ionic polymer film is located between the two electrode layers containing MXene, and the ionic polymer film is mainly made of ionic liquid and thermoplastic polyurethane.The invention also comprises a preparation method of the ion sensor. The ion sensor disclosed by the invention has the beneficial effects that the ion sensor does not need to be electroplated with metal electrodes, and the electrode layers containing MXene can be directly used as electrodes.

The invention provides a self-sensing driving device, which belongs to the technical field of precise detection. The self-sensing driving device comprises a sleeve, an output rod, a guiding mechanism, a thrust piezoelectric sensing body and a telescopic driving device. The guiding mechanism is movably arranged inside the sleeve; the thrust piezoelectric sensing body is fixedly connected with the telescopic driving device; and the middle part of the output rod is fixedly connected with the guiding mechanism, and the tail end of the output rod is connected with the thrust piezoelectric sensing body or the telescopic driving device. The self-sensing driving device has the capability of simultaneously sensing driving displacement and a driving load which are generated by a driver, and the precise driving of the driver under the closed loop control can be realized by feedback application of a sensing signal of the driving displacement or the driving load. The driver has high integration degree, a compact in structure, high structural intensity, and is sensitive and precise in sensing and driving. The driver is particularly suitable to be developed into a precise driver and a precise motor.

The invention relates to a pendulum friction nanometer generator, an energy supply device and a sensor. The pendulum friction nanometer generator comprises a transmission unit which comprises a transmission rod, wherein the transmission rod can move along an axial direction under the external excitation action; a friction unit which comprises a stator friction structure and a rotor friction structure which have different triboelectric sequences, wherein the rotor friction structure is fixed on the transmission rod and can move along with the transmission rod, so that the contact-separation process of the rotor friction structure and the stator friction structure is realized; the rotor friction structure has the unbalanced mass distribution, and rotates and swings around the transmission rod by taking the own center of mass as a balance position while moving along the axial direction; and a plurality of electrode units which are distributed at intervals, are arranged on the back surfaceof the stator friction structure and are used for carrying out electrical output. The pendulum friction nanometer generator has the advantages of frequency multiplication output, low cost, simple manufacture, high output and high durability.

The invention discloses an ionizing gas sensor based on a discharge electric field with a micro-gap polarization structure. The ionizing gas sensor comprises an external circuit electrode couple, the polarization structure and a material with a large length-diameter ratio, wherein the polarization structure is arranged at the area between the external circuit electrode couple; and the material with large length-diameter ratio is at least arranged on one of the polarization structure and the external circuit electrode couple. When the ionizing gas sensor works, lower voltage is only needed to be loaded onto electrodes of an external circuit, and the electric field which is enough to ionize target gas molecules is generated between the polarization structure and the electrodes of the external circuit by the polarization action of the polarization structure, so that the working voltage of the sensor is effectively reduced. Compared with the micro-gap structure between the external circuit electrode couple in the prior art, the ionizing gas sensor effectively solves the problems of instability and failure caused by contaminants such as dust, fiber and the like which fall into a micro-gap, and the signal to noise ratio and the sensitiveness are improved.

The invention, which belongs to the optical fiber sensing technology field, particularly relates to a distributed single core feedback interference optical path structure having low background light. According to the structure, a wave combination port of a polarization beam splitter is utilized as an interface of a distributed sensing optical fiber as well as a faraday rotating mirror that is used at an end of the sensing optical fiber is also cooperatively utilized, so that light that is returned along a same way is eliminated, a coherent light component in an interference optical path is improved and strip sharpness is enhanced. Besides, an application advantage in a traditional single core feedback sensing structure is preserved; and the sensing function can be realized only by using a common fiber in optical fiber communication. The distributed single core feedback interference optical path structure provided in the invention is especially suitable for long-distance line monitoring including security monitoring of communication trunk and a gas pipeline and the like.

The invention provides a flexible tactile sensor and a preparation method and an application thereof. The flexible tactile sensor comprises a working electrode and a counter electrode, wherein the working electrode comprises a flexible electrode and a flexible gasket layer, a side of the flexible electrode close to the flexible gasket layer is provided with a micro-nano structure, and the flexiblegasket layer is provided with a through hole. The flexible tactile sensor has advantages of high softness, high sensitivity, low pressure detection limit, simple system structure, low cost and capability of realizing large-area array preparation.

The invention discloses a cooker with temperature measurement function. The cooker comprises a cooker base, heaters and a pan lining, wherein the heaters and the pan lining are on the cooker base; a temperature sensing LC oscillating circuit for sensing the temperature of the pan lining is arranged on the pan lining; a temperature identification module is arranged on the cooker base; the temperature sensing LC oscillating circuit comprises an oscillating coil L1 and a temperature sensing capacitor CT; the temperature identification module comprises a controller and an exciting / sensing coil L2; an exciting drive circuit, a state switching circuit and a frequency detection circuit are connected onto the exciting / sensing coil L2, and the exciting / sensing control of separated temperature measurement of the cooker is achieved. The cooker with the temperature measurement function is simple and convenient in arrangement; the temperature sensing LC oscillating circuit is in contact with an object to be measured; the sensitivity is high; the temperature identification module is not in contact with the object to be measured; the service lives of chips and components on the temperature identification module are easily prolonged.

The invention discloses an inductive liquid crystal display key screen, which mainly comprises a single-side ITO glass, a double-side ITO glass, a glue frame, a first display electrode, a first alignment film, a second display electrode, a second alignment film, a liquid crystal, a first polaroid, an inductive electrode ITO layer and a second polaroid. The glue frame is arranged between the single-side ITO glass and the double-side ITO glass. The first display electrode is coated to an ITO conductive layer of the single-side ITO glass, and the first polaroid is stuck to the other side of the single-side ITO glass. The first alignment film is printed on the first display electrode. The second display electrode is coated to an ITO conductive layer of the double-side ITO glass. The second alignment film is printed on the second display electrode. A closed accommodating space is formed among the glue frame, the first alignment film and the second alignment film; and the liquid crystal is filled in the accommodating space. The glue frame is provided with a group of conductive points to conduct the first display electrode and the second display electrode. The inductive electrode ITO layer is screen-printed on the other ITO conductive layer of the double-side ITO glass. The second polarizing plate is stuck to the inductive electrode ITO layer.

The invention discloses a rare earth-based metal organic framework fluorescent nano material as well as a preparation method and application thereof, and belongs to the field of fluorescent materials.The preparation method comprises the following steps: (1) preparing a rare earth salt solution, wherein the rare earth salt comprises two light-emitting rare earth elements and at least one non-light-emitting rare earth element; and (2) mixing the rare earth salt solution with a ligand solution, and carrying out solvothermal reaction to obtain the rare earth-based metal organic framework fluorescent nano material. The fluorescence red-green ratio of the fluorescent nano-material can be continuously changed in a range of 0.79-2.73 along with an aqueous ethanol system with different proportions, and the fluorescent nano-material can be applied to multiple fields of ethanol water sensor elements, temperature sensor elements, humidity sensor elements, anti-counterfeiting elements and the like; and the problems that an existing rare earth-based metal organic framework fluorescence sensor can only change the fluorescence intensity but cannot change the light-emitting color, and the fluorescence intensity is influenced by multiple factors such as temperature and chemical environment, so that the sensitivity and accuracy are not high are solved.

The invention discloses a novel multifunctional capacitive touch screen. The screen includes Cover Lens glass, a flexible printed circuit (FPC), Sensor glass and EMI glass which are arranged from topto bottom in sequence, wherein the Cover Lens glass is fixed with the flexible printed circuit (FPC) through OCA join adhesive, the Sensor glass is also fixed with the EMI glass through OCA join adhesive, and gold wires are pulled out from the Sensor glass to be connected with the FPC. The upper surface and lower surface of the EMI glass are plated with a layer of ITO membrane separately, the resistance value of the ITO membrane on the upper surface of the EMI glass is smaller than 15 ohms per square resistance, and the ITO membrane on the upper surface of the EMI glass serves as an electromagnetic shield; the ITO membrane on the lower surface of the EMI glass serves as a heating resistor. The novel multifunctional capacitive touch screen improves electromagnetic shielding, low-temperaturefast starting and other military environmental requirements for military on-board displayers, and meanwhile reduces the operation process difficulty of the on-board displayer products.

The invention discloses a tachometer based on an AMR magnetic resistance switch chip and a production method thereof. The production method thereof comprises steps that a permanent magnet is fixedly disposed next to the AMR chip, and magnetic flux passing through the MAR chip can reach a saturated state by adjusting angles, and at the same time, the chip is used to output a low level signal; when the cam shaft of the motor rotates along with rotation of a motor rotor, and passes by the chip, the magnetic flux passing through the AMR chip is in an unsaturated state, because the gear on the cam shaft adopts magnetic conductive materials, and at that time, the chip is used to output a high level signal; under the rotation of the motor rotor, a series of pulse signals are output by the chip, and the rotating speed of the motor can be calculated according to the signals. The tachometer has advantages of simple structure, small size, low requirement on installation environment, and wide application environment.

The invention relates to the field of application of fiber gratings, and discloses a fiber grating sensor. The fiber grating sensor comprises a fiber (1), a shell (2) and clamping pieces arranged in the shell (2), wherein the clamping piece is provided with an accommodating channel (3) for enabling the fiber (1) to pass through; the clamping piece comprises a pressing part (4) for pressing the fiber (1) and a convex edge part (5) connected with the pressing part (4); the convex edge part (5) is clamped in the shell (2); the convex edge parts (5) of the two clamping pieces are arranged oppositely and a gap is left between the convex edge parts of the two clamping pieces; and the part, located between the pressing parts (4) of the two clamping pieces, of the fiber (1) is provided with a grating. The fiber grating sensor provided in the invention is bonded with no need of a polymeric material and has good reliability and practicability.

The invention discloses a special convenient book collection cabinet for primary school students, which comprises a main body of the bookcase, a first cabinet, a second cabinet, an electric telescopic rod and an intelligent controller. Each first cabinet is composed of cabinet doors, one side of the main body of the bookcase is provided with a power supply, the lower end of the main body of the bookcase is provided with a number of electric telescopic rods, and one end of the electric telescopic rods is provided with an intelligent controller. The setting of the two cabinets realizes the preservation of collection books and the preservation of commonly used books respectively. Through the setting of the baffle, the function of placing commonly used books is realized and different books are separated. Through the setting of the electric telescopic rod and the intelligent controller, The expansion and contraction function of the main body of the bookcase is realized to facilitate taking or collecting books, and the setting of the drying layer prevents the books from becoming moldy due to humidity during the book placement process. The present invention has a reasonable design and is suitable for popularization and use.

The invention relates to a Mach-Zehnder Interferometer and Phi-OTDR based voice acquisition distributed fiber sensing system. The Mach-Zehnder Interferometer and Phi-OTDR based voice acquisition distributed fiber sensing system comprises a laser, a first coupling, a light modulator, a first fiber amplifier, a fiber circulator, a second fiber amplifier, a first photoelectric detector, a second coupling, a third coupling, a fiber pickup box, a second photoelectric detector, a data acquisition processing module and a four-core detection fiber, wherein the second coupling and the third coupling form a Mach-Zehnder Interferometer system. The voice acquisition function is achieved by the pickup box, the fiber circulator and the four-core detection fiber form a Phi-OTDR, and the disturbed fiber sensing function is achieved; by the sensing system, the functions of voice acquisition and distributed fiber sensing are achieved; and meanwhile, the same four-core detection fiber is shared, and thefiber resource utilization ratio is improved.

The invention belongs to the technical field of piezoelectric sensing materials, and particularly relates to a flexible integrated piezoelectric sensing material and a preparation method thereof. PVDFand PVDF-TrFE polymer flexible films are prepared by adopting an electrostatic spinning method, carbon nanotubes and PEDOT:PSS are adopted for compounding, and normal-temperature film pressing is performed together with a PVDF electrospun film to obtain the piezoelectric sensing composite material with the excellent mechanical and electrical performance. The preparation method is simple and feasible, parameters are adjustable, an adhesive does not need to be used in the compounding and film pressing processes, other invalid components are not introduced, the material response is sensitive, the piezoelectric current is low, the material is safe and harmless to the human body, and the requirements of a human body wearable sensor device are completely met.

The invention belongs to the technical field of optical fiber sensing and in particular relates to a method for eliminating reverse return light in a distributed single-core feedback interference light path. According to the method, a polarization beam splitter, a Faraday rotary reflector and an optical fiber delayer are used in a polarized light path to form a single-core feedback interference light path, wherein a wave combining end of the polarization beam splitter is connected with one end of a sensing optical fiber; the other end of the sensing optical fiber is connected with the Faraday rotary reflector; in the optical fiber delayer, a delay optical fiber or the polarization beam splitter, the delay optical fiber and the Faraday rotary reflector are used to form a delay device; and a wave combining port of the polarization beam splitter is used as an interface of a distributed sensing optical fiber to cooperate with the Faraday rotary reflector which is used at the tail end of the sensing optical fiber so as to eliminate the light which returns along the original path in the light path, increase coherent light components in the interference light path and improve the definition of stripes. The method is particularly suitable for long-distance line monitoring such as security monitoring of communication main lines, oil-gas pipelines and the like.

The invention relates to the technical field of printing equipment, in particular to a folding device. The folding device comprises a paper discharging table of a folding machine, a pushing mechanismis arranged below the paper discharging end of the paper discharging table, the pushing mechanism comprises a support and a driving unit fixed on the support, the output end of the driving unit is fixedly provided with a screw rod which is perpendicular to the paper discharging direction, and the screw rod is in threaded connection with a sliding table; and two side plates which are opposite to each other and are axially arranged along the screw rod are arranged at the upper end of the sliding table, a plurality of partition plates perpendicular to the side plates are arranged between the twoside plates, a collecting basket capable of placing folded paper is formed between every two adjacent partition plates, a strip-shaped hole is formed in each collecting basket, and a proximity switchconnected with the strip-shaped holes is fixed on the support. According to the folding device, the proximity switch is used for sensing the amount of the folded paper in the collecting baskets, and then the driving unit is used for automatically switching the collecting baskets, so that the collecting basket can continuously and automatically collect the paper, the labor intensity of operators isreduced, and the cost is reduced; and meanwhile, the collecting baskets are beneficial for protecting the folded paper, and the folded paper is prevented from being polluted or damaged.

The invention discloses a rare earth-based metal organic framework fluorescent nanometer material, a preparation method and an application thereof, and belongs to the field of fluorescent materials. The preparation method comprises the following steps: (1) preparing a rare earth salt solution; the rare earth salt includes two luminescent rare earth elements and at least one non-luminescent rare earth element; (2) mixing the rare earth salt solution with a ligand solution, and then performing a solvent Thermal reaction to obtain rare earth-based metal-organic framework fluorescent nanomaterials. The fluorescent red-green ratio of the fluorescent nanomaterial of the present invention can be continuously changed from 0.79 to 2.73 with different proportions of water-ethanol systems, and can be used in multiple fields such as ethanol-water sensor elements, temperature sensor elements, humidity sensor elements, and anti-counterfeiting elements. It solves the problem that the current rare earth-based metal-organic framework fluorescence sensor can only change the fluorescence intensity but not the emission color, and the fluorescence intensity is affected by multiple factors such as temperature and chemical environment, resulting in low sensitivity and accuracy.

The invention provides a fiber bragg grating sensor, a deep roadway surrounding rock strain monitoring method and a deep roadway surrounding rock strain monitoring system, is used for monitoring deformation of deep roadway surrounding rock, and provides a weak fiber bragg grating array wide-range strain sensor which can accurately monitor strain of the deep roadway surrounding rock. The fiber bragg grating sensor comprises an optical fiber, the optical fiber comprises an optical fiber core and a plurality of fiber bragg gratings recorded on the optical fiber core, the fiber bragg gratings are weak fiber bragg gratings with the peak reflectivity lower than 1%, and the multiple fiber bragg gratings conduct unit discretization on the whole optical fiber to achieve quasi-distributed sensing. In the working process, after incident light enters the sensing network, composed of the fiber bragg gratings, of the optical fiber and has a reflection phenomenon, a part of light waves meeting the Bragg Bragg grating condition wavelength can be reflected back, the remaining light waves can be continuously transmitted to the next grating along the fiber core of the optical fiber, and through multiple times of reflection in the optical fiber and demodulation of the reflected light, the light waves with the wavelength meeting the Bragg Bragg grating condition wavelength can be obtained. And the sensing function of the optical fiber sensing network is realized.

The invention discloses an explosion-proof practical automobile tire with good wear resistance, which comprises a tire main body, an arc-shaped explosion-proof rubber column, a valve, a mounting hole and a wheel hub. Several protective material layers are fixedly connected to the outer side of the tire main body. There are anti-slip and wear-resistant layers on the outside, and there are a number of valves on the inner edge of the tire body. There are arc-shaped explosion-proof rubber columns around the valves. There are mounting holes on the inside of the tire body, and a protective rubber ring on the outside of the mounting hole. With the hub, the anti-skid and wear-resistant function of the tire body can be realized through the setting of the anti-skid and wear-resistant layer. The explosion-proof function of the tire body can be realized through the setting of the arc-shaped explosion-proof rubber column. The installation function of the tire body can be realized through the setting of the installation hole. The arrangement of the infrared sensing device realizes the sensing function to small animals, thereby avoiding damage to animals running under the tires. The invention has a simple structure and a reasonable design, and is suitable for popularization and use.