11results about How to "Improve sensor sensitivity" patented technology

The invention belongs to the field of sensors, and particularly relates to a flexible capacitive sensor for lithium battery pressure detection and a preparation method thereof. The sensor comprises a first polar plate and a second polar plate which are stacked, the dielectric layer is stacked between the first polar plate and the second polar plate, a bulge array is arranged on one side, close to the first polar plate, of the dielectric layer, a gap is reserved between the top of the bulge array and the first polar plate, the bottom area of bulges is larger than the top area of the bulges, and the dielectric layer is a polymer ionic liquid gel layer with a porous structure; the Spacer layer is stacked between the first polar plate and the dielectric layer and arranged on the periphery of the bulge array in a sleeving manner, one side of the Spacer layer is attached to the surface of the edge of the bulge array of the dielectric layer, the other side of the Spacer layer is attached to the first polar plate, and the Spacer layer is a polymer gel layer with a porous structure; the polymer, the porosity and the average pore size of the Spacer layer correspond to the polymer, the porosity and the average pore size of the dielectric layer; the sensing sensitivity and linearity can be improved, and the detection range can be widened.

This invention relates to the field of sensing materials technology, specifically disclosing a cellulose-based conductive hydrogel material for ascorbic acid detection, its preparation method, and its applications. This hydrogel uses TEMPO oxidized cellulose nanofibers (TOCNF) as a biocompatible matrix. By introducing Cu-BTC / CNT composite nanoparticles, a three-dimensional conductive network with both high electrochemical activity and structural stability is constructed. While retaining the biocompatibility and flexibility of cellulose, it exhibits particularly high sensitivity and selectivity in detecting small biomolecules such as ascorbic acid, with short response time and good stability. This method achieves synergistic optimization of the composite material's structural uniformity and functionality without relying on complex molding processes. Experimental results show that the conductive hydrogel prepared by this invention possesses good mechanical properties and biocompatibility, exhibiting high sensitivity and stability in biosensing fields such as ascorbic acid detection, providing a novel high-performance material basis for flexible biosensors.

A UV sensor head is provided capable of increasing sensing sensitivity. A UV sensor head 1 that converts ultraviolet light into visible light and guides the converted visible light toward an optical fiber 11 includes a wavelength conversion member having an inorganic matrix and phosphor particles dispersed in the inorganic matrix.

An embodiment of the present invention relates to a touch sensor and a touch input device comprising same. The touch sensor according to the embodiment of the present invention comprises: a plurality of driving electrodes each having a shape extending in a first direction and having a plurality of openings arranged along the first direction; and a plurality of reception electrodes comprising a plurality of reception electrode patterns arranged in the plurality of openings of the plurality of driving electrodes, and a plurality of connection patterns which are arranged along a second direction different from the first direction and electrically connect the plurality of reception electrode patterns.

The invention discloses a thick-film resistor with high strain sensitivity and low temperature sensitivity and a preparation method thereof, and belongs to the technical field of functional materials, electronic elements and sensors. The preparation problem of the thick-film resistor with high strain sensitivity and low resistance temperature coefficient is solved. The preparation method comprises the following steps: weighing lead oxide, boron oxide and silicon dioxide, uniformly mixing, completely melting into molten glass, carrying out water quenching, and carrying out ball milling on the water-quenched glass slag to obtain lead borosilicate glass powder; weighing RuO powder and lead borosilicate glass powder, adding an organic carrier, mixing, adding into a three-roller grinder, and fully grinding to be fine and uniform, so as to obtain resistance paste; and coating a cleaned substrate with the resistance paste in a silk-screen printing manner, and in an air atmosphere, controlling the sintering peak temperature within the range of 750-950 DEG C and the heat preservation time of the sintering peak temperature within the range of 10-360 minutes to obtain the thick-film resistor with both high strain sensitivity and low temperature sensitivity.

A display device may include a window module and a display module including a first non-folding region, a second non-folding region, and a folding region disposed between the first non-folding region and the second non-folding region. The display module may include a damping layer, a color filter layer, a display panel, and a lower member, which are sequentially stacked below the window module, and the damping layer may include polymer.

The invention discloses a preparation method of a full-flexible PZT film, which comprises the following steps: (1) uniformly depositing an LSMO coating on a fluorophlogopite substrate, and crystallizing the LSMO coating; (2) spin-coating a plurality of PZT thin film layers on the crystallized LSMO coating to obtain a PZT / LSMO / mica product; (3) preparing a flexible supporting layer on the PZT thin film layer; and (4) immersing the product in an etching solution to completely dissolve the LSMO coating so as to obtain the full-flexible PZT film. The invention also discloses a preparation method of the full-flexible PZT sensor. The preparation method comprises the following steps: S1, designing the interdigital electrode and printing the interdigital electrode on the PET substrate; and S2, transferring the full-flexible PZT thin film to a PET substrate, and then performing packaging and polarization to obtain the full-flexible PZT sensor. The full-flexible PZT sensor with the characteristics of high performance and ultrasensitivity is obtained on the flexible PET substrate through a transfer strategy with high cost performance, so that not only is the excellent electrical property of the perovskite structure film improved, but also higher mechanical flexibility is shown.

The utility model provides a kind of sensor and electronic equipment, it is related to sensor field.Sensor includes: substrate, resistance sensing layer, capacitance sensing layer, pressure sensitive layer and contact layer.Resistance sensing layer is set on substrate.Capacitance sensing layer is set on the side of resistance sensing layer away from substrate, and capacitance sensing layer includes at least one hollow structure, and at least one hollow structure extends from the side of capacitance sensing layer close to resistance sensing layer to the side of capacitance sensing layer away from resistance sensing layer.Pressure sensitive layer is set on capacitance sensing layer, and is filled into at least one hollow structure, and pressure sensitive layer is contacted with the side of resistance sensing layer away from substrate by at least one hollow structure.Contact layer is set on pressure sensitive layer, and is configured to generate deformation under the action of external force, to transmit external force to pressure sensitive layer.

The embodiment of the utility model discloses a control circuit for a vegetable warming board and the vegetable warming board, the control circuit comprises an induction module, a display module, a power supply control module and a speed regulation module, the induction module is used for detecting the distance between a human body and the vegetable warming board and generating a distance signal; the display module is used for receiving the distance signal and transmitting the distance signal to the power supply control module; the power supply control module is used for controlling the speed regulation module to regulate the rotating speed of the warming board according to the distance signal. The induction sensitivity of the control circuit is improved by utilizing the filtering effect of a capacitor in the induction module and the stable control of a resistor, so that the induction module detects the distance between a human body and the vegetable warming board and generates a distance signal, and the distance signal is transmitted to the power supply control module by using the display module; the power control module can control the speed adjusting module to adjust the rotating speed of the vegetable warming board according to the distance signal, so that the rotating speed of the vegetable warming board is automatically adjusted, and user experience is improved.

The present invention provides a signal scaling synthesis method for a dual interference channel push-pull structure, aiming to solve the problem of sensor signal synthesis using a dual interference channel push-pull structure. The present invention adopts a phase time domain signal scaling synthesis method with independent demodulation of dual interference channels, utilizes the signal phase inversion characteristics of the dual interference channels, and achieves doubling of the signal response amplitude by reasonably setting the scaling coefficient, while controlling the lifting level of the dual interference channel noise after mixing, and suppressing common mode noise. The present invention can overcome the imbalance problem of "push" and "pull" sensitivity of the dual interference channel, effectively increase the response sensitivity after synthesis, minimize the lifting effect of dual channel signal synthesis on the background noise, improve the sensing dynamic range, and eliminate the influence of common mode interference signals.

The application belongs to the technical field of optical electric field sensing, and discloses a U-shaped cascade waveguide nested micro-ring resonant cavity type electric field sensor and a preparation method thereof. The electric field sensor comprises an input coupling unit, an optical sensitive unit and a spectrum detection output interface. The optical sensitive unit comprises an incident grating, a U-shaped cascade waveguide structure, a nested micro-ring resonant cavity and an electro-optic polymer film. The nested micro-ring resonant cavity comprises a reference resonant cavity and a sensing resonant cavity. The electro-optic polymer film covers the cladding layer of the sensing resonant cavity. The application expands the equivalent free spectral range of a single resonant unit through a U-shaped feedback structure, utilizes the free spectral range difference between the two resonant units to form a vernier effect to amplify the sensing response, and simultaneously adopts a heterogeneous integrated vertical coupling mode to improve the system integration and packaging consistency, and improves the sensing sensitivity and measurement range.