15 results about "Barometer" patented technology

The utility model belongs to the technical field of barometers, and particularly relates to a barometer which comprises a meter shell, an air inlet, a meter cover, a dial plate and a pointer, the air inlet is arranged on the meter shell, air transmits pressure to a piston through the air inlet, the piston converts the air pressure into linear displacement, and the pointer is arranged on the meter shell. The piston transmits power to the gear output piece through the two-stage transmission mechanism, the gear output piece is connected with the pointer and drives the pointer to deflect on the dial plate, the piston is further connected with a reset piece, and the reset piece acts on the piston and provides pressure opposite to gas acting force. By means of a two-stage transmission mechanism composed of the double sector gears, the rack frame and the cylindrical gear, tiny linear displacement of the piston is amplified and converted into remarkable deflection of the pointer, the detection sensitivity of tiny air pressure changes is remarkably improved, the reading range is expanded, and reading is more accurate and visual.

The invention discloses a control method and device of an aviation temperature control box, a storage medium and an aircraft take-off and landing process recognition device, and relates to the technical field of information processing, the control method of the aviation temperature control box is applied to the aircraft take-off and landing process recognition device, and the aircraft take-off and landing process recognition device is fixed to the aviation temperature control box. The aircraft take-off and landing process identification device comprises an inertial measurement unit and a barometer. The method comprises the following steps: reading preset configuration parameters; acquiring acceleration data measured by the inertial measurement unit and an air pressure value detected by the barometer; compensating the acceleration data through the configuration parameters to obtain compensated acceleration data; calculating the free acceleration of the aviation temperature control box according to the compensation acceleration data; determining the current flight stage of the aircraft according to the free acceleration and the air pressure value; and controlling the aviation temperature control box according to the current flight stage. Through a dual-confirmation scheme of the IMU and the barometer, the probability of state error identification of the airplane can be reduced, and the control effect of the aviation temperature control box is improved.

The utility model provides a calibration and test integrated device in a barometer production process, and belongs to the technical field of detection equipment. The problem that an existing barometer is tedious in calibration and testing is solved. The calibration and test integrated device used in the barometer production process comprises a main box body, the main box body is provided with a test unit connected with the main box body and used for testing, the main box body is further provided with a control unit connected with the main box body and matched with the test unit, and the main box body is further provided with a calibration unit connected with the main box body and matched with the test unit. And the adjusting unit is matched with the testing unit and the control unit and is used for regulation and control. The utility model has the advantage of improving the detection efficiency.

The utility model discloses a kind of ring main unit, it is related to ring main unit technical field, including cabinet, first fixed block is fixedly installed in cabinet two sides, spring is fixedly connected between pressing plate and the gas storage box, spring is located the outside of movable rod, the outside of first fixed block is equipped with multiple second heat dissipation holes, the outside of gas guide pipe is fixedly connected with protective frame, the bottom of gas storage box is fixedly connected with air inlet pipe.The utility model gas storage box, barometer and unique structure design can accurately judge the saturation state of drying agent, replace drying agent in time, according to replacement time, absorption water vapor weight etc. Data, accurately analyze environmental humidity, and then accurately adjust drying agent filling amount, avoid waste and drying deficiency, greatly improve drying efficiency, maintain the stable drying environment inside cabinet, in addition, fan auxiliary acceleration air flow, further reduce the water vapor content inside cabinet, synergistic drying agent improves overall drying effect.

Methods, systems, and devices for calibrating a barometer of a client device. A server computer accesses historical data including location data, and atmospheric pressure data collected from a plurality of client devices over a period of time. An equation system defined by the historical data is solved. The equation system has a plurality of unknown parameters, the plurality of unknown parameters comprising a barometer bias of a first client device among the plurality of client devices. The first client device is calibrated using the barometer bias.

An air gauge includes at least one nozzle arranged to expel gas into a gap between the nozzle and a surface and also includes at least one tap for communicating a pressure in the gap to a pressure sensor, wherein the nozzle and the gap are displaced from one another to mitigate the effects of turbulence from the nozzle on the magnitude of the pressure communicated by the tap.

The utility model discloses a high-precision low-altitude meteorological sensor calibration device, and relates to the field of sensor calibration. The air pressure calibrator comprises an air pressure calibrator main board, the upper surface of the air pressure calibrator main board comprises a micrometering valve, one end of the micrometering valve is connected with a universal joint, the other end of the universal joint is connected with a micrometering valve knob, the micrometering valve can be operated by rotating the micrometering valve knob, and a support is arranged at the lower end of the micrometering valve knob. According to the high-precision low-altitude meteorological sensor calibration device, the fine adjustment valve is arranged on the main board of the air pressure calibrator, and the universal joint is used for connecting the fine adjustment valve knob, so that an operator can conveniently operate the fine adjustment valve by rotating the knob, the flexibility and convenience of operation are greatly improved, and meanwhile, the operation efficiency is improved. The support at the lower end of the micro-metering valve knob can be horizontally placed when the micro-metering valve knob does not work, so that the adjusting precision is prevented from being influenced by shaking of the knob during operation, and the stability of micro-metering operation in the calibration process is ensured.

The utility model relates to the technical field of barometers, and discloses a barometer with an installation protection device, which comprises an air pipe, the side wall of the air pipe is fixedly provided with one end of a connecting pipe, the other end of the connecting pipe is fixedly provided with one end of a protection box, and the other end of the protection box is rotatably provided with a box door. An electronic barometer is arranged in the protection box, and an air pressure assembly is arranged in the protection box. According to the barometer with the installation protection device, in order to prevent an electronic barometer from influencing work when the working state is abnormal, the barometer is provided with an air pressure assembly, when the pressure intensity changes, an elastic pipe is extruded by the pressure intensity, the input pipe, the elastic pipe, a connecting rod, a driven rod, a first gear, a second gear and a pointer are matched, and the pressure intensity change amplitude is displayed on a dial plate; and a worker observes to know the air pressure condition, so that the influence caused by the damage of electronic components is better prevented, and the working efficiency is improved.

This invention discloses a barometer error calibration method based on a pressure field, comprising the following steps: S1, performing drift suppression and cross-consistency calibration on the original height observation data of the tag barometer and anchor barometer to obtain the cross-calibration height of each anchor barometer; S2, constructing a time-varying pressure field model for each anchor barometer to solve for the pressure plane value at the horizontal position of the tag barometer, thereby obtaining the residual between the drift compensation height of the tag barometer and the pressure plane; S3, estimating and updating the height offset of the tag barometer online based on the time-varying pressure field model to obtain the tag barometer pressure height correction amount; S4, using the tag barometer pressure height correction amount to correct and update the drift-suppressed tag barometer pressure height, and outputting the elevation result. This method can effectively suppress errors caused by barometer drift and changes in ambient pressure, improve the stability and accuracy of elevation estimation, and has good robustness and adaptability.

This invention provides a barometer-assisted GNSS / INS positioning quality control method and system for urban environments. By constructing a joint altitude reference benchmark for INS and barometers, the strong coupling dependency between GNSS and INS is broken. A multi-level closed-loop quality control mechanism is used to identify and suppress anomalies in raw GNSS observations, ambiguity resolution, and the final positioning results. Sensor error correction maintains the long-term stability of the auxiliary source. Precisely embedding barometer vertical constraints within a loosely coupled framework significantly enhances the observability of the altitude direction. Even in scenarios with severely degraded GNSS signals, such as urban canyons, under overpasses, and tunnel entrances / exits, this invention can still provide continuous and robust lane-level navigation results, meeting the stringent application requirements for high-reliability and high-precision positioning in autonomous vehicles, intelligent connected terminals, and UAV inspection platforms.

The application discloses a weather station pose monitoring system and method based on GNSS and IMU, and the system comprises a positioning and timing module GNSS, an attitude sensing unit IMU and a main control unit; the IMU simultaneously serves as a low-power trigger, and only the IMU is running when the system is in a dormant state; when it is detected that the inclination exceeds a preset threshold, the IMU wakes up other units; the main control unit integrates an edge computing module, a sliding window with a time length not less than 3 times of a maximum sampling period of a sensor is set, a space-time constraint error model of the GNSS, the IMU and a barometer is constructed, the IMU cumulative drift and the barometer temperature drift are iteratively corrected through error feedback, fusion confidence is determined based on error reciprocals and is weighted, and finally multi-source data is fused to generate a pose result in the window. The precision of pose monitoring is improved.

The utility model belongs to the field of barometers, and particularly relates to a barometer with a quick-release structure, which comprises a barometer main body and a mounting rack, the outer wall of the barometer main body is fixedly connected with a positioning insertion block, the mounting rack is provided with a quick-release assembly, the quick-release assembly comprises a quick-release seat, the outer wall of the mounting rack is fixedly connected with a quick-release seat, and the quick-release seat is fixedly connected with the positioning insertion block. An inserting groove is formed in the quick release seat, and the inner wall of the quick release seat is in sliding connection with a curved surface sliding block. According to the barometer with the quick release structure, the pressure plate is pressed downwards, so that related parts can be easily pushed to enable the curved surface slide block to leave the insertion groove, at the moment, the positioning insertion block of the barometer main body can be conveniently inserted into the insertion groove, and after the pressure plate is loosened, the installation can be completed by using the reset of the spring. The whole process is simple and rapid to operate, compared with a traditional installation mode, installation time and labor cost are greatly saved, and the air pressure gauge is particularly suitable for working scenes where air pressure gauges need to be installed and replaced frequently.

This invention discloses a control method for safe landing of a UAV in abnormal barometer data states. It is based on a dual-loop cascade PID control algorithm for UAV barometer altitude hold-up, with an outer loop of altitude and an inner loop of velocity. The altitude measurement value of the altitude loop and the velocity measurement value of the velocity loop are respectively obtained by fusing the relative altitude H of the UAV measured by the barometer as the observation value and fusing the UAV IMU data using a Kalman filter algorithm. 融合 and fusion speed V 融合 The control method of this invention is not easily affected by barometer fluctuations, and can control the drone throttle more stably and linearly, reducing the possibility of full-amplitude throttle fluctuations, thereby improving the stability and robustness of drone landing, avoiding problems such as large-scale drone ascent and descent, and the drone's payload becoming lighter, resulting in the inability to reach the target speed. The control method of this invention can be unified into the automatic landing mode to simplify the control logic and improve the robustness of control.

This invention discloses a machine learning-based method and system for evaluating the wind resistance performance of small and medium-sized unmanned aerial vehicles (UAVs), relating to the field of UAV flight control technology. The method includes: acquiring raw sensor data using a nine-axis inertial measurement unit (IMU), a global positioning module (GPS), and a differential barometer; performing sliding window framing processing on the raw sensor data; eliminating impulse noise in angular velocity and linear acceleration using median filtering; smoothing the barometric pressure data using Kalman filtering; fitting the GPS trajectory using the least squares method and extracting time-domain and frequency-domain features to generate a time-series feature matrix; and converting the Euler angle features in the time-series feature matrix into a Lie group space. This invention effectively solves the kinematic error problem of traditional methods under large-angle maneuvers by using feature representations constrained by rigid body kinematics and a physics-guided machine learning framework, significantly improving the evaluation accuracy and control reliability under complex wind field conditions.

1. Name of the product in this design: Pressure gauge reading device. 2. Purpose of this design: For reading air pressure. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.