19results about How to "Improve sensing accuracy" patented technology

The utility model discloses an electronic pressure switch, which is applied to the technical field of pressure switches, and comprises a switch main body and a joint, a support frame is arranged in the switch main body, a circuit board is bolted in the support frame, one end of the support frame far away from the joint is in interference fit with a silica gel pad, and the silica gel pad is connected with the circuit board. Two keys used in cooperation with the circuit board are symmetrically inserted in the side, away from the connector, of the switch body, and an induction core electrically connected with the circuit board is clamped in the connector. Pressure is sensed and measured through the sensing core body, and the pressure sensed by the sensing core body is finely measured through the circuit board, so that the pressure is fed back to the plug-in unit and is converted into an electric signal to be fed back to the plug-in unit, and the plug-in unit can transmit the electric signal outwards to drive the switch to be switched on and off. The sensing precision of the pressure switch is improved, and transmission errors are reduced. And the action is triggered directly through an electric signal without a mechanical moving part, so that quick response can be realized, and the practicability is improved.

The invention provides cardiovascular intervention postoperative treatment equipment which structurally comprises a lying plate, a moving seat, a telescopic part, a positioning block and a treatment assembly, the lying plate is embedded in the upper middle area of the moving seat, the telescopic part is fixed to the lower middle area in front of the moving seat and is in interval fit with the lying plate, and the positioning block is fixedly connected with the other end of the telescopic part; the treatment assembly is arranged at the upper end of the positioning block and is horizontally communicated with the lying plate; after the lying plate is further improved, the inner side of the plate body is completely covered by the sponge cushion, so that the back bone of a patient can be prevented from being in direct contact with the plate body, and the pain caused by the influence of the hardness of the plate body on the back bone is prevented; then, the infrared positioner on the plate body can be matched with the top part of the treatment assembly in a light induction mode through the infrared generating body of the infrared positioner, so that the cardiovascular treatment area of the patient can be determined through infrared induction instead of medical staff, and therefore the position determination accuracy and efficiency can be improved.

A depth pixel of a time-of-flight (ToF) sensor includes a common photogate disposed in a central region of the depth pixel, a plurality of floating diffusion regions disposed in a peripheral region surrounding the central region, a plurality of demodulation transfer gates disposed in the peripheral region, and a plurality of overflow gates disposed in the peripheral region. The demodulation transfer gates transfer photocharge collected by the common photogate to the plurality of floating diffusion regions. The demodulation transfer gates are symmetric about each of a horizontal line and a vertical line passing through a center of the depth pixel and substantially perpendicular to each other. The overflow gates drain the photocharge collected by the common photogate and are symmetric about each of the horizontal line and the vertical line.

The utility model relates to the technical field of electric heating towel racks, in particular to an electric heating towel rack which comprises a storage box, a first shell, a second shell and a hollow connecting column, towels are hung on the second shell, a heating module is arranged in the second shell, and a heating plate in the heating module can heat and dry the towels. A control module is further arranged in the towel rack and comprises a light-emitting part and a light sensing part which are arranged on the first shell and the second shell respectively, whether the towel is hung on the second shell or not is sensed through cooperation of the light-emitting part and the light sensing part, and therefore whether the heating plate is heated or not is controlled, and the towel rack can heat the towel more intelligently and efficiently.

The application discloses a compensation device and method for laser phase noise of an optical frequency domain reflectometer, and relates to the technical field of distributed optical fiber sensing. The compensation device comprises a sweep laser source module, a main interferometer module, an auxiliary interferometer module and a signal processing module. The sweep laser source module is used for outputting a first sweep laser beam and a second sweep laser beam. The main interferometer module receives the first sweep laser beam and generates a first beat frequency signal related to the position of a scattering point of a sensing optical fiber. The auxiliary interferometer module receives the second sweep laser beam and generates a second beat frequency signal related to the position of a weak reflection point of an auxiliary optical fiber. The signal processing module collects the first beat frequency signal and the second beat frequency signal, extracts phase terms of the sensing optical fiber and the auxiliary optical fiber respectively, and realizes phase noise compensation. The compensation method realizes the function of the compensation device, that is, realizes phase noise compensation, analyzes the spectrum of compensation information again, and demodulates strain information along the sensing optical fiber. The application realizes uniform compensation of phase noise, and improves the system measurement distance, spatial resolution and strain accuracy.

This invention relates to an optical frequency domain reflection system and method based on a voltage-controlled oscillator (VCO). The system mainly includes an arbitrary function generator, a laser, a VCO, a single-sideband modulator, an auxiliary interferometer, a main interferometer, and a polarization beam splitter. The arbitrary function generator, laser, VCO, and VSB modulator work together to generate the sweeping light required for measurement. This sweeping light is split into two paths: one path enters the main interferometer as probe light, and the other path enters the auxiliary interferometer to obtain the instantaneous frequency of the probe light. Based on the instantaneous frequency, the signal from the main interferometer is resampled using a one-dimensional interpolation method. This invention uses a low-cost, small-sized VCO as the radio frequency signal generator to generate a sweeping signal with fast frequency modulation performance, and compensates for phase noise caused by the nonlinearity of the sweeping signal by designing the optical path of the auxiliary interferometer and using a linear interpolation algorithm.

The invention discloses a yarn guide device based on distributed sensing and self-adaptive intelligent regulation and control and a tension monitoring system, relates to the technical field of chemical fiber manufacturing, and is suitable for high-speed spinning production of POY (pre-oriented yarn), FDY (fully drawn yarn) and the like. Aiming at the defects of monitoring lag, large error and dependence on manpower in the prior art, the system comprises a guide wire device body and an intelligent monitoring regulation and control system: the guide wire device body takes an aluminum oxide-silicon carbide composite ceramic substrate as a substrate, and an FBG distributed sensing array is integrated to realize tension in-situ high-precision detection (the error is less than or equal to + / -0.5%); the intelligent monitoring regulation and control system recognizes eight types of working conditions based on transfer learning and a self-adaptive SVM model through multi-parameter acquisition and feature fusion extraction, is integrated with a PLC system to complete automatic regulation and control of abnormity, and is assisted by graded alarm and 24-hour self-calibration functions. The full-process intelligent closed loop of the spinning tension is realized, the fiber quality consistency and the production efficiency are improved, the energy consumption and the maintenance cost are reduced, and the method is adaptive to the global monitoring of a multi-spindle production line.

The utility model discloses detection equipment for volatile organic gas, which comprises a shell, a display screen arranged at the top of the front side of the shell, a power switch, a detection switch, a fan switch and a keyboard fixedly arranged at the bottom of the front side of the shell, a battery mounting groove arranged at the bottom of the back side of the shell, and a rechargeable battery arranged in the battery mounting groove, the detection equipment comprises a shell, the bottom end of the shell is provided with a charging connector and a data interface, the top end of the shell is fixedly provided with an electrochemical sensor, and the sensing end of the electrochemical sensor is connected with two connectors. Air at the position to be detected is sucked through the suction hood, the air enters the two connectors through the hose, volatile organic gas starts to be sensed through the electrochemical sensor, detection of the volatile organic gas is achieved, the volatile organic gas is extracted through the suction hood, operation is easy and convenient, and the sensing precision and efficiency are improved.

The utility model discloses a motor rotor and a brushless motor, which are movably embedded in a stator assembly and located between the stator assembly and a rear end cover assembly. The motor rotor comprises a rotor end cover which is far away from one side of the rear end cover assembly, a magnetic shoe assembly, a magnetic ring seat and a magnetic ring piece which are sequentially arranged on one side, close to the rear end cover assembly, of the rotor end cover, a rotor iron core embedded in an inner groove of the magnetic shoe assembly, and a rotating shaft embedded in the inner side of the rotor iron core, and the magnetic ring piece is formed by enclosing at least four split magnetic rings; the sensor is embedded in the side, close to the rotor assembly, of the rear end cover assembly, the split magnetic rings are arranged close to the sensor, the machining mode that the split magnetic rings are formed one by one in a breaking mode is adopted, then the four machined and formed split magnetic rings are annularly arranged in a staggered mode, and in the process, the operation of machining protruding points on the surfaces of traditional integrated magnetic rings is not needed any more. And the processing technology of the magnetic ring is simplified under the condition that the original effect of the magnetic ring is ensured.

The utility model discloses a passive wireless vibration sensing device and system, sensing device includes antenna group, the antenna group includes at least one antenna, antenna group is connected with frequency conversion device and phase modulation device, frequency conversion device is connected with phase modulation device, and phase modulation device is connected with piezoelectric device, sensing system includes read-write device, and read-write device is connected with at least one passive wireless vibration sensing device, the utility model can carry out real -time accurate monitoring to vibration under the condition of passive.

The utility model relates to electronic game equipment technical field, concretely discloses a gamepad, including face shell, control handle, trigger subassembly and adjusting assembly, control handle includes handle shell, PCB board, light touch switch and hall chip, handle shell and PCB board all are located on face shell, and PCB board is located between face shell and handle shell, light touch switch and hall chip all are located on the PCB board, trigger subassembly is located on the PCB board, and trigger subassembly includes the trigger key of movable setting, trigger key is provided with magnet, adjusting assembly is located on handle shell, and adjusting assembly includes the adjusting piece of movable setting, adjusting piece is provided with trigger portion, the utility model discloses through the mutual cooperation of trigger subassembly and adjusting assembly, can convert between hall linear mode and key switch mode, need not change different gamepad, and then improved the use experience of user.

The invention discloses a door and window opening and closing inductor, and belongs to the field of door and window opening and closing detection equipment, the door and window opening and closing inductor comprises an induction assembly installed in a door frame or a window frame, the induction assembly comprises an induction head and an installation seat used for installing the induction head, and the installation seat is arranged in an installation hole in the inner side wall of the door frame or the window frame; sliding blocks are slidably mounted in the peripheral side walls of the mounting base in the radial direction, tile-shaped supporting tiles are fixed to the ends, exposed out of the side faces of the mounting base, of the sliding blocks, and plane threads are formed in the side faces of the ends, located in the side walls of the mounting base, of the sliding blocks. The rotating cylinder is coaxially and rotatably mounted in the end face of the mounting seat, a plane thread is arranged on the end face of one end, located in the mounting seat, of the rotating cylinder so as to be meshed with the plane threads on all the sliding blocks at the same time, and when the rotating cylinder is rotated, all the supporting tiles synchronously move towards the hole wall of the mounting hole; and the mounting seat is fixed in the center of the mounting hole by clinging to the hole wall. According to the invention, the installation of the inductor can be simply and conveniently realized, and the universality is high.

The utility model discloses an infrared detection camera capable of adaptively adjusting induction sensitivity, which comprises an infrared sensor, a communication module, a battery management module and a control module, and is characterized in that the communication module receives a real-time environment temperature signal provided by external equipment; the battery management module comprises a temperature sampling unit for measuring a battery temperature signal; the control module comprises a mean value calculation unit and a temperature comparison unit, the input end of the mean value calculation unit is respectively connected with the communication module and the temperature sampling unit, and the output end of the mean value calculation unit is connected with the input end of the temperature comparison unit, so that the temperature comparison unit sends a mean value result of the real-time environment temperature signal and the battery temperature signal to the communication module; and the temperature is compared with the preset object temperature to obtain a temperature comparison result for adjusting the sensing sensitivity of the infrared sensor, so that the control module adjusts the sensing sensitivity of the infrared sensor according to the temperature comparison result, the adjustment accuracy of the sensing sensitivity of the camera is improved, and the sensing accuracy is improved.

This invention provides a dynamic mechanical structure wind vane ground-mounted landscape tower, relating to the field of communication landscape towers. It includes a landscape column, a flipping guide rod, a marker head, a marker tail, and an extension plate. The landscape column has two annular sub-tower structures on its upper and lower sides of its outer end face, symmetrically positioned. The landscape column's outer end face has four outward-facing adjustment cavities. This design uses a threaded connection to move a telescopic connecting cylinder outward, which in turn moves the connecting guide plate, and then, through transmission, moves the directional marker outward. As the directional marker moves outward, it makes it easier for pedestrians to understand the wind direction, providing a direct visual representation of the wind's direction. This design also deforms the extension plate, increasing the wind-receiving area of ​​the marker tail, thereby expanding the wind-sensing area and improving the wind vane's sensing accuracy. This facilitates adjustment and sensing of the wind direction angle, and the change in the dynamic mechanical structure enhances the wind vane's sensing effect.

The present application relates to a biosensor comprising: a substrate; a first gate formed on the substrate; a second gate formed on the substrate; and a potential measuring section formed between the first gate and the second gate, measuring the potential of the first gate and the potential of the second gate, a channel section being formed between the first gate and the potential measuring section and between the potential measuring section and the second gate, so that the gate potential is kept constant, thereby having the effect of reducing measurement noise and improving sensing accuracy.

The application discloses a passive wireless sensing label with multi-axis sensing function and belongs to the technical field of sensing; the device comprises a film layer, a first antenna layer, a piezoelectric layer and a second antenna layer which are sequentially stacked from top to bottom; an RFID chip and an RFID antenna are installed in the first antenna layer; the RFID chip is in signal connection with the RFID antenna; the piezoelectric layer is in signal connection with the RFID chip; the RFID chip is connected with a sensing structure, and the sensing structure is installed on the first antenna layer or the second antenna layer; the number of the sensing structure is two, the two sensing structures are horizontally arranged on the same plane, and the two sensing structures are perpendicular to each other. The passive wireless sensing label has the advantages of convenient manufacturing, low cost, flexible size, high starting sensitivity, flexible adjustment of sensing parameters and the like.

A microfluidic intraocular pressure (IOP) sensor based on a double-sidewall structure and its fabrication method are disclosed, which can be applied in the field of IOP sensing. The sensor includes: a corneal contact lens for transmitting changes in intraocular pressure; the corneal contact lens includes a planar sensing layer and a support structure; a sensing and display cavity is disposed within the planar sensing layer, the sensing and display cavity being spirally distributed around the center of the planar sensing layer for sensing and indicating changes in intraocular pressure; the support structure maintains a preset first curvature for the corneal contact lens. The sensing and display cavity includes: a sensing fluid cavity disposed on the outer ring of the planar sensing layer, one end of which is closed, and the other end connected to a display channel; the sensing fluid cavity is provided with a double-sidewall structure and is filled with an indicator fluid, the volume of which changes in response to changes in intraocular pressure; the display channel is connected at one end to the sensing fluid cavity and at the other end to a buffer chamber for displaying the displacement of the indicator fluid to indicate changes in intraocular pressure; the buffer chamber is connected at one end to the display channel and at the other end closed for balancing air pressure changes.

The present invention relates to a microfluidic sweat collection and sensing system comprising a bottom layer proximal to the skin of a wearer, a top layer distal to the skin of the wearer; and a separation layer between the bottom and top layers; wherein the separation layer is made of a hot melt material and the top and bottom layers are bonded together with the hot melt separation layer by heat pressing such that a gap is formed between the top and bottom layers; wherein the top and bottom layers are each formed with a water channel and the fabric constituting the bottom and top layers is hydrophilic in the portion corresponding to the water channel and is hydrophobic in the remaining portion.

The utility model relates to the technical field of object table, concretely is a kind of object table guiding mechanism, it mainly includes installation platform, two groups of welding assembly are installed in installation platform top surface, two groups of object table and jig are provided in installation platform upper portion, further include: guiding mechanism, guiding mechanism is set in installation platform upper portion, guiding mechanism includes the guiding frame of fixed installation in installation platform top surface, cleaning mechanism, cleaning mechanism is set in installation platform upper portion. When moving frame and fixed plate move, gear one rotates on rack, gear one drives rotating shaft and bevel gear one to rotate, bevel gear one drives bevel gear two and connecting shaft to rotate, connecting shaft drives fan blade to rotate, when fan blade moves to the upper portion of inductor, the wind force produced by fan blade rotation blows dust on the surface of inductor, ensure that inductor is not easily obstructed cover, inductor can accurately sense the position of inductive plate to improve the sensing accuracy and guiding accuracy of inductor.