24results about How to "Stable signal" patented technology

This utility model discloses a liquid crystal panel moving testing fixture, belonging to the field of liquid crystal panel testing technology. The fixture includes a mounting platform, a guide rail fixed to the mounting platform, a probe holder slidably mounted on the guide rail, a removable elastic probe inserted into the probe holder, a clamping block that elastically presses a flexible circuit board against the rear end of the probe, and a mounting platform for supporting and fixing the liquid crystal panel. The front end of the probe is pressed against the detection point of the liquid crystal panel, and the other end of the flexible circuit board is connected to an external testing circuit via a piano cover, forming a quickly replaceable testing path. This utility model utilizes the cooperation between the elastic probe and the clamping block to achieve a highly reliable, low-contact-resistance electrical connection; the probe holder as a whole can move along the guide rail to adapt to different testing positions; the pluggable probe structure facilitates maintenance, significantly improving testing efficiency and reducing testing costs.

This invention discloses a differential VGA signal decoding and display device, relating to the display field. It includes a signal input module, an ESD protection module, a differential receiving module, a synchronization separation module, an image decoding driver module, a display module, an audio processing module, and a control module. These modules are interconnected and work together to decode, process, and display differential VGA signals. This differential VGA signal decoding and display device solves the problems of short transmission distance, weak anti-interference capability, limited resolution, and high power consumption associated with traditional VGA interfaces. It also achieves full compatibility with traditional VGA devices, integrating audio processing, local playback, intelligent signal enhancement, and remote monitoring and management functions. It achieves reliable conversion from analog to differential signals, supports high-definition display, and has a transmission distance of up to 50 meters, while maintaining full compatibility with traditional VGA devices. This technology is particularly suitable for professional fields such as industrial automation and medical imaging, meeting the diverse display and intelligent operation and maintenance needs of professional scenarios.

The invention discloses an SERS (Surface Enhanced Raman Scattering) flexible sensor based on dual-ion modification as well as a preparation method and application of the SERS flexible sensor, and belongs to the technical field of biomedical detection. A bacterial cellulose membrane (BCM) is used as a base material, cation modification (QBCM) is carried out through glycidyl trimethyl ammonium chloride (EPTMAC), anion modification (TABCM) is carried out through tannic acid (TA), a functional substrate with asymmetric charge distribution and a porous structure is constructed, then Ag NPs are loaded on the modified base material through an in-situ reduction method, the QBCM-coated AgNPs and TABCM-coated AgNPs dual-ion active substrate is formed, and the AgNPs / TABCM-coated AgNPs dual-ion active substrate is used for preparing the composite material. The SERS flexible sensor is integrated through a layer-by-layer self-assembly (LbL) technology; the SERS flexible sensor can realize specific enrichment and synchronous detection of anionic kynurenic acid (KYNA) and cationic spermine (Spm) in urine, and is low in detection limit and good in reproducibility.

The application discloses an electric control device and a heating and ventilation equipment, and relates to the technical field of electric control devices, and aims to improve stability and safety.

The invention discloses a fire extinguishing bomb hanging mechanism for a heavy-load unmanned aerial vehicle, relates to the technical field of unmanned aerial vehicle application and fire fighting equipment, and aims to solve the problems that an existing fire extinguishing bomb hung on the unmanned aerial vehicle is poor in stability, single in throwing control, poor in adaptability and insufficient in safety. The system comprises a heavy-load unmanned aerial vehicle, a fire extinguishing bomb, a bomb loading cabin and an electric control system, the bomb loading cabin is mounted at the bottom of the heavy-load unmanned aerial vehicle, comprises bomb cabin upper and lower layer frames, a steering engine, a motor, a cabin door, a pin pulling rod and the like, and is used for fixing and delivering fire extinguishing bombs; the electric control system is electrically connected with each component, controls actions and interacts data; the mechanism is stable in mounting, accurate in bomb dropping, wide in adaptation, high in safety, capable of improving the fire extinguishing efficiency and reliability of the unmanned aerial vehicle and suitable for complex fire operation.

The invention discloses a ring network system for a well drilling site and an implementation method thereof, the ring network system comprises a redundant PLC system, at least two switch slave stations and at least two types of network lines, each switch slave station is connected with different types of well drilling equipment control systems, and the network lines are connected with the redundant PLC system. All the switch slave stations and the redundant PLC system are connected through each type of network lines to form a corresponding type of looped network, and the redundant PLC system is used for controlling the looped network system to be switched from the current looped network to the other type of looped network when it is detected that a node communication fault occurs in the connected looped network. The network stability and the system safety of a drilling site are improved, and stable operation of site construction is guaranteed.

A drum collector ring precision conductive friction pair test device belongs to the technical field of new energy engineering machinery vehicle cable drums, and comprises a height-adjustable slide block mechanism, a V-shaped positioning block, a precision electronic scale and a direct current resistance tester. The height-adjustable sliding block mechanism comprises a base and a vertical guide sliding block pair arranged on the base. And a circuit board brush wire mounting plate which transversely extends out is fixed on a sliding block of the guide sliding block pair. And the V-shaped positioning block for placing the conducting ring is placed on the precision electronic scale. And two probes of the direct current resistance tester are respectively used for connecting the detection end of the circuit board and the conducting ring. The vertical position of the sliding block is controlled to change the contact pressure between the circuit board brush wires on the two sides and the conducting ring below the circuit board brush wires, the pressure values are displayed through the precision electronic scale, and meanwhile the direct-current resistance tester is used for detecting contact direct-current resistance values corresponding to different pressure values between the circuit board brush wires and the conducting ring. And finally selecting the optimal contact pressure to be matched with the direct-current resistance value.

This utility model relates to the field of Ethernet connector technology and discloses a simple and efficient Ethernet connector with a raised dot structure. It includes a plastic shell, a connecting plate fixedly connected to the top of the plastic shell, a fixing tube fixedly connected to the rear end of the plastic shell, mounting protrusions fixedly connected to the surface of the fixing tube, an inner rounded corner fixedly connected to the top of the fixing tube, and a mounting clip fixedly connected to the front end of the inner rounded corner. This utility model modifies the clip structure of the plastic shell by adding an inner rounded corner, making the stress at the deformation point more even, simplifying the structure, and achieving a simple, efficient, and durable clip with lower mold costs. By adding a raised dot structure to the shell, the insertion and extraction force is increased, the gap is reduced, and a stable signal is achieved. This utility model avoids the hidden dangers of complex structures that are prone to breakage and insufficient insertion and extraction force, thus improving the service life of the connector.

The application discloses a kind of high resilience self-repairing polyurethane elastomer and preparation method thereof.The preparation method includes the pre-polymerization of secondary amine end-capped polyether amine and diisocyanate in organic solvent, to obtain isocyanate end-capped prepolymer;Diamine and / or hydrazine chain extender are added to the prepolymer to carry out chain extension reaction, to obtain chain extension product containing urea bond and hydrazine bond;Trifunctional isocyanate crosslinking agent is added to the chain extension product to carry out crosslinking reaction, and after reaction to gelation critical point, it is formed by pouring into shape.The application constructs the interpenetrating double network structure of high-density multiple hydrogen bond physical network and dynamic covalent bond chemical network interpenetration, so that the resilience of elastomer reaches 92.7%~95% under 100%~300% strain, and the self-repairing efficiency reaches more than 72% after 12h repair at room temperature without external stimulation, realizes the synergistic improvement of high resilience, high tensile and high-efficiency self-repairing performance, and can be used in flexible electronic devices, wearable sensors and flexible substrates in biological medical detection equipment.

This application relates to the technical field of vehicle signal testing, and in particular to a signal conditioning circuit, conditioning device, and testing system. The circuit includes a first processing module, a first protection module, a second processing module, a second protection module, a power supply module, and a third protection module. Specifically: the first processing module modulates the initial PWM signal output from the NI chassis into a target PWM signal that conforms to the voltage acquisition range of the ECU; the first protection module provides overvoltage protection for the first processing module; the second processing module converts the control signal output from the ECU into a target control signal that conforms to the voltage acquisition range of the NI chassis; the second protection module provides overcurrent protection for the second processing module; the power supply module provides the corresponding operating voltages for the first and second processing modules; and the third protection module provides overvoltage and overcurrent protection for the power supply module. The solution of this application can improve the stability of digital signals during HIL testing.

The invention relates to the technical field of fruit picking, and particularly discloses an intelligent agricultural fruit picking device which comprises a handheld rod, a vibration motor is fixedly connected to the outer surface of the upper end of the handheld rod, an occlusion part is arranged at the upper end of the vibration motor, and the occlusion part can occlude and fix branches of a fruit tree. Therefore, the vibration strength can be automatically adjusted according to the thickness of the branches, damage to fruit trees is reduced on the premise that the fruits are shaken off, the thickness of the fruit tree branches is detected in real time through the measuring part, the strength of the vibration motor is automatically adjusted, it is ensured that the fruits are shaken off efficiently, and meanwhile damage to the fruit tree branches is reduced; double optimization of picking efficiency and tree protection is achieved, the picking efficiency and fruit tree protection are both considered, the design that a driving motor is matched with a threaded rod to drive a lower closing plate to move is adopted, the self-locking function is combined, the device can adapt to branches of different thicknesses, stable meshing is achieved, vibration force is effectively transmitted, and the picking efficiency is improved.

The application discloses a connector and a combination thereof, which are used for connecting a plurality of mating connecting components arranged in an array, and comprise: a fixed shell fixed on a circuit substrate, an accommodation cavity being formed in the fixed shell; a movable shell installed in the accommodation cavity in a manner that can be floated and shifted along a plane direction parallel to the circuit substrate, the movable shell having a plug hole for plugging and unplugging the mating connecting components; a plurality of groups of power terminal units arranged in an array on the circuit substrate, the power terminal units elastically supporting the movable shell in the accommodation cavity; each group of the power terminal units comprising at least two elastic terminals arranged in a symmetrical manner, the elastic terminals having a conductive main body for current flow, and at least one pair of elastic contact arms provided on the conductive main body and used for electrically connecting the mating connecting components. The connector claimed in the application can increase the current flow area and the contact area with the mating connecting components in a space with limited height, and can reduce the temperature rise.

The utility model discloses an injection oil cylinder for an injection molding machine, which comprises an oil cylinder and a piston rod, and the piston rod can extend into the oil cylinder and can move along the central axis of the piston rod in the oil cylinder; end covers are arranged at the two axial ends of the oil cylinder, so that a sealed oil cavity is formed in the oil cylinder; any end cover is connected with a displacement sensor, and the displacement sensor comprises a sensor connecting rod capable of extending into the oil cylinder; moreover, a position magnetic block capable of being matched with the sensor connecting rod is arranged at the end, close to the sensor connecting rod, of the piston rod, the position magnetic block and the piston rod move synchronously, and the displacement sensor outputs displacement signals of the piston rod by detecting magnetic field changes caused by movement of the position magnetic block. According to the utility model, the displacement sensor is directly integrated on the end cover of the injection oil cylinder, the structure is compact, the size of the whole device is reduced, and the installation space is saved; the device is compact in structure, high in measurement precision, strong in anti-interference capability and convenient to install and maintain.

The invention relates to a metal wiring structure for an MEMS inertial device, which comprises a first isolation layer, a first metal layer, a second isolation layer and a second metal layer which are sequentially stacked on a substrate, each of the first isolation layer and the second isolation layer comprises a plurality of isolation blocks, and two adjacent isolation blocks are arranged at intervals. The first metal layer and the second metal layer each comprise a plurality of metal blocks, and every two adjacent metal blocks are arranged at intervals and electrically connected through a wire. The invention further provides the MEMS inertial device and a metal wiring method for the MEMS inertial device. According to the invention, the isolation layer is designed into a form of a plurality of isolation blocks, so that the technical problem of large stress caused by the isolation layer grown on the whole surface in the prior art can be solved, and the wafer is prevented from deformation or warping in the technological process, thereby improving the bonding performance and performance indexes of the device; all the metal layers are divided into small blocks and connected, all the metal layers and the substrate are connected through the contact holes and are grounded or fixed in point positions, and it is guaranteed that signals of all the metal wires are stable.

The application discloses an acceleration sensor laying device and laying method, and belongs to the field of acceleration sensor application. The device comprises a block body, the bottom end surface of the block body is a flat surface, a sensor accommodating hole is formed in the bottom end surface of the block body, a spring is arranged in the sensor accommodating hole, the upper end of the spring is connected with the top end surface of the sensor accommodating hole, and the lower end of the spring is connected with the top end of the acceleration sensor; the sum of the length of the spring in a free state and the longitudinal height of the acceleration sensor is greater than the longitudinal height of the sensor accommodating hole, and the sum of the length of the spring in a completely compressed state and the longitudinal height of the acceleration sensor is less than the longitudinal height of the sensor accommodating hole; a wire outlet hole of the acceleration sensor is formed in the block body, and the wire outlet hole is in communication with the sensor accommodating hole and the outside of the block body. The application can quickly, conveniently and efficiently lay the acceleration sensor at a measuring point and make the signal of the acceleration sensor stable.

The invention provides a hydrogel composite microneedle as well as a preparation method and application thereof. The preparation method comprises the following steps: preparing a mixed solution from a sodium hydroxide solution and a phosphate solution; a uniform and transparent solution is obtained from the low-molecular sodium hyaluronate and the mixed solution; obtaining a first uniform solution from the uniform transparent solution, N, N-dimethylformamide and methacrylic anhydride; adjusting the pH value of the first uniform solution to obtain a second uniform solution; utilizing the second uniform solution to obtain a white flocculent solution; obtaining a white precipitate through the white flocculent solution; dissolving the white precipitate in ultrapure water, and dialyzing to obtain dialyzed liquid; performing vacuum freeze drying on the dialyzed liquid to obtain a MeHA solid; obtaining an M-G solution through the MeHA solid; and obtaining the hydrogel composite microneedle by using the M-G solution. According to the method, the sample extraction efficiency is improved through an extraction and detection two-step method, and stable signals can be kept in the detection process.

The application discloses a positioning performance evaluation method, comprising the following steps: firstly, calculating the carrier-to-noise ratio of a single positioning antenna, the carrier-to-noise ratio after diversity and the diversity gain; then, calculating the satellite number density according to the current positioning requirement; subsequently, comprehensively evaluating the antenna positioning performance in combination with the satellite number density and the diversity gain, and judging whether the positioning requirement is met; if not, starting the diversity combination strategy to adjust the antenna configuration, combining and processing the signals of multiple antennas by using the maximum ratio combining diversity strategy, and effectively improving the signal quality; finally, re-executing the evaluation process and dynamically adjusting the antenna combination strategy according to the evaluation result; by comprehensively considering multiple key parameters, the method can ensure that the positioning system can meet the high-precision and high-reliability positioning requirement in different application scenarios.

This invention discloses a planar two-dimensional time-grating displacement sensor based on electric field modulation, belonging to the field of measurement and sensing technology. A sensing unit group consisting of four sensing units is disposed on a moving scale substrate. Each sensing unit comprises an excitation electrode and a sensing electrode. The excitation electrodes are staggered along the X and Y directions and connected to form an N-phase excitation electrode group. The sensing electrode is arranged in the gaps formed by the excitation electrodes, and all sensing electrodes within the same sensing unit are electrically connected to form a sensing signal output terminal. Multiple modulation units are disposed on a fixed scale substrate, forming a planar capacitive coupling structure with the excitation and sensing electrodes. When the moving scale substrate moves relative to the fixed scale substrate, the modulation units cause the capacitance value of the planar capacitor to change alternately. In this invention, both the input and output signals are located on the moving scale substrate, eliminating the need for leads on the fixed scale substrate. This effectively reduces signal attenuation problems caused by lead resistance, capacitance, and parasitic parameters, improving the sensor signal stability and transmission efficiency.

This utility model relates to the field of infusion pumps and discloses a capacitive touch infusion pump LCD display assembly, including a touch function sheet with an electrostatic protective film. A capacitive touchscreen CG layer is adhered to one side of the electrostatic protective film. A capacitive touchscreen SCA layer is disposed on the side of the CG layer away from the electrostatic protective film. A capacitive touchscreen SENSOR layer is disposed on the side of the SCA layer away from the CG layer. A capacitive touchscreen OCA layer is disposed on the side of the SENSOR layer away from the SCA layer. In this utility model, the layers are seamlessly bonded together with optical adhesive to form a flat surface. The ink layer conceals the internal circuitry, and the functional components are hidden at the edges or invisible when not in operation. The grounding circuit is concealed, eliminating redundant protrusions and achieving a simple and smooth appearance that meets high-end aesthetic requirements.

The utility model discloses a direct current PE copper pipe split groove terminal of a new energy automobile with multiple wire outlet structures, comprising a terminal body and a male end insertion sheet, the terminal body comprises a clamping part, a fixing part and a welding part which are integrally arranged in sequence along the axial direction, and the welding part is arranged in a flat manner and is used for installing a large-diameter cable; a plurality of elastic arms are arranged on one side of the clamping part in a surrounding mode in the circumferential direction. The male end insertion piece sequentially comprises an installation part which is inserted into the welding part and fixedly connected with the welding part, insertion parts which are arranged on one side of the installation part side by side in a scattered mode and used for being connected with the female end insertion grooves in an inserted mode and installing small-diameter cables, and connection parts which connect the installation part and the insertion parts. According to the utility model, through multi-wire-diameter compatibility and function integration design, the core requirement of a high-voltage direct current system of a new energy automobile on space intensification is met.

This invention discloses a dual-luciferase reporter cell line for detecting CRISPR-Cas protein cleavage activity and its applications. The reporter cell line of this invention expresses the nanoluciferase gene Nluc with the housekeeping gene ACTG1, avoiding the influence of intracellular environmental changes on the activity of the nanoluciferase Nluc. Changes in Nluc activity reflect the cleavage activity of the CRISPR-Cas protein, overcoming the shortcomings of existing GFPs, which have a long half-life and cannot quickly respond to double-strand breaks at gene sites. Furthermore, the reporter cell line of this invention can also be used to screen CRISPR-Cas protein inhibitors. This invention has used the constructed reporter cell line to screen small molecule compounds that can inhibit SpCas9 cleavage activity intracellularly. The screening process is simple, convenient, and provides stable signals.

The utility model discloses a card thickness detection device, which comprises a frame body, a conveyor belt module, a roller detection module, an elastic support module, a damping module, a displacement detection unit and a data processing module, and is characterized in that the elastic support module and the roller detection module act synergistically, so that a roller is contacted with the surface of a card and is jacked up when the card passes through; the elastic supporting module and the damping module cooperate to limit the jumping height of the roller, so that the reset time of the roller is less than or equal to 0.1 second after a single card passes, and the equipment achieves high-precision thickness detection and 0.1-second rapid reset matched critical damping design through the cooperation of elastic supporting and hydraulic damping, and gives consideration to the response speed and stability. The composite supporting structure effectively filters high-frequency vibration and conveyor belt disturbance, adapts to 0.5-2m / s variable-speed operation, and remarkably improves the detection efficiency.

The application belongs to the field of biotechnology and genetic engineering, and discloses a culture method of double-fluorescently labeled Caenorhabditis elegans for monitoring mitochondrial homeostasis, which comprises the following steps: culturing Caenorhabditis elegans ATU3301 strain to L4 larva stage, and selecting male as the father; culturing Caenorhabditis elegans MQD753 strain to L4 larva stage, and selecting hermaphrodite as the mother; placing them on a culture plate in a certain proportion, mating, and obtaining offspring; removing the parents and continuing to culture the offspring to L2 larva stage; screening Caenorhabditis elegans through a microscope to obtain target Caenorhabditis elegans; without an external staining agent, the fluorescent protein is stably integrated into the genome and specifically located in mitochondria, the signal is stable, the location is accurate, and the repeatability is high, which provides a new tool with physiological relevance, operational convenience and cost advantage for the research on mitochondrial homeostasis mechanism and the development of related disease drugs, and has great potential application value.

This utility model provides an emergency smoke extraction device for fire protection, comprising a housing, a main exhaust unit, a small fan, a smoke sensor, and a controller. The housing has a main air duct and a detection air duct. The main exhaust unit is located in the main air duct, while the small fan and smoke sensor are located in the detection air duct. The controller is electrically connected to the main exhaust unit, the small fan, and the smoke sensor. The main exhaust unit operates based on the detection signal from the smoke sensor. This smoke extraction device features a detection air duct. During normal use, the small fan in the detection air duct draws ambient air into the detection channel, where the smoke sensor detects the air. This active air extraction and detection method allows for faster detection of smoke, enabling the main exhaust unit to intervene promptly and improving safety. Furthermore, the integrated controller provides a more stable signal and better compatibility.