13 results about "Reference sensor" patented technology

A method for optimizing the environment sensing for a driving assistance system having sensor data fusion using an additional reference sensor system. The method includes: using a sensor for environment sensing as a reference sensor; creating a first environment model on the basis of sensor data from the reference sensor; creating a second environment model on the basis of sensor data from the sensor data fusion; and comparing the first environment model with the second environment model.

The present application relates to cargo handling equipment, more particularly to the technical field of freight aircraft, and discloses a stable freight carrying type unmanned aerial vehicle, which comprises a freight unmanned aerial vehicle, a control cabinet for packaging an unmanned aerial vehicle control module is arranged on the freight unmanned aerial vehicle, a supporting part is installed on the freight unmanned aerial vehicle, a bearing part is installed on the supporting part, a gravity center part is connected to the bearing part, and a balance part is connected to the gravity center part; the air floating plate with an arc-shaped wedge surface is matched with the symmetrically arranged magnetorheological damper assembly; the air floating plate realizes the preliminary decoupling of the load and the fuselage by means of the air flow to form the aerodynamic buoyancy; various sensors integrated in the magnetorheological damper body detect the deflection state of the air floating plate in real time, drive the damper to output the reverse torque by the on-board decoupling controller, the attitude reference sensor calibrates the detection data to eliminate the interference of the fuselage inclination, and the active attitude stabilization of the freight load and the dynamic decoupling effect of the load and the fuselage of the unmanned aerial vehicle are realized.

An elevator device includes: a car which travels through a hoistway; a code tape suspended in the hoistway; a code read sensor which reads a code described in the code tape; a code tape elongation / contraction detection unit which detects an amount of elongation or contraction of the code tape; a reference marker which is installed in the hoistway and which indicates a reference position of the car; a reference sensor which is installed in the car and which detects the reference marker; and a control unit which, when a condition based on the amount of elongation or contraction is satisfied, moves the car to the reference position in accordance with a detection result of the reference sensor, causes position information of the car to be read as reference position information, calculates compensatory position information based on the reference position information, and controls the car using the compensatory position information.

The application discloses a portable switch cabinet dehumidification and temperature and humidity rapid field calibration device and method, which comprises a portable temperature and humidity environment cavity, a calibration installation unit, a standard reference unit, an air flow circulation unit and an intelligent control unit; the intelligent control unit is provided with a self-checking module, a data acquisition module, a calibration judgment module and a calibration locking module; the self-checking module determines an abnormal reference sensor through data comparison logic; the data acquisition module synchronously acquires data and constructs a sliding window data set; the calibration judgment module calculates space uniformity indexes and time stability indexes, compares the space uniformity indexes and the time stability indexes with space uniformity threshold values and time drift threshold values, and judges the environment stability; the calibration locking module calculates an environment reference true value, calculates errors of sensors to be calibrated, and generates a calibration report; the application reduces the volume and weight of the calibration equipment, reduces the deviation caused by local air flow disturbance in the calibration chamber, automatically judges the calibration environment, and improves the calibration quality.

This invention discloses an adaptive testing and calibration method for SF6 gas sensors, belonging to the field of gas sensor technology. The method includes establishing a sealed high-pressure tank testing system, connecting multiple sensors under test and a reference sensor, and purging with low-humidity gas; determining the proportion of sensors exceeding the allowable moisture content; if a preset value is reached, repurging; pressurizing to a preset pressure value; circulating gas and sampling moisture data; after determining system stability, reading the pressure, temperature, and moisture errors of each sensor and the reference data; if qualified, the test is passed; otherwise, the humidity is increased to a second operating condition for retesting; extracting historical data from unqualified sensors to calculate pressure, temperature, and moisture compensation parameters and writing them into local storage; iterative calibration until qualified or reaching the maximum number of calibrations. This invention solves the technical problem of batch accurate testing and automatic calibration of SF6 gas sensors under simulated real operating conditions. It achieves batch automated testing, improving product consistency and factory reliability.

In order to simplify the provision of an inspection report (PB) for a vehicle (1), and thereby in particular to reduce the effort involved in a periodic inspection of the vehicle (1), the invention relates to a method wherein vehicle sensor data (FSD) is compared with reference sensor data (RSD) by an evaluation unit (4) in order to determine a difference between the vehicle sensor data (FSD) and the reference sensor data (RSD), wherein the inspection report (PB) for the vehicle (1) is generated by the evaluation unit (4), and the determined difference between the vehicle sensor data (FSD) and the reference sensor data (RSD) is indicated in the inspection report (PB), wherein the generated inspection report (PB) is made accessible to an external device (6) on an external storage unit (7), or the generated inspection report (PB) is transmitted directly to an external device (6) and made available there.

The control system continues even if a malfunction occurs in the sensor used for feedback control. [Solution] The fluid control system comprises a device for controlling the fluid flowing through a channel, a first sensor provided upstream of the device, and a second sensor provided downstream of the device. The fluid control system performs processing based on the measured value of a reference sensor, which is one of the first and second sensors. The fluid control system comprises an abnormality detection unit, an estimation unit, and a processing unit. The abnormality detection unit determines whether or not there is an abnormality in the reference sensor. The estimation unit calculates an estimated value of the measured value from the reference sensor based on the measured values ​​from the first and second sensors, which is not the reference sensor, according to the characteristics of the device. The processing unit performs processing using the estimated value if it is determined that there is an abnormality in the reference sensor.

An active noise reduction system for the passenger compartment (4) of a vehicle (1) includes: a reference sensor (16) designed to detect a noise reference signal indicating ambient noise to be eliminated; an error sensor (17) disposed within the passenger compartment (4) for detecting an error signal in a noise reduction area to achieve noise reduction feedback control; a loudspeaker (12) designed to reproduce sound within the passenger compartment (4); and a digital processing unit (14) designed to control the loudspeaker (12) to generate an anti-noise signal to be reproduced within the passenger compartment (4) through a noise reduction algorithm based on the reference signal, the error signal, and the determination of acoustic paths within the passenger compartment (4) to achieve noise reduction. In particular, the system has distributed intelligence, wherein the reference sensor (16) and / or the error sensor (17) have embedded digital processing capabilities and are configured to cooperate with the digital processing unit (14).

The application relates to a vehicle sensor data association method and device, a vehicle and a medium. The method comprises the following steps: acquiring first sensor data collected by a first sensor, second sensor data collected by a second sensor and reference sensor data collected by a reference sensor; performing time alignment on the first sensor data and the second sensor data respectively with the reference sensor data to obtain a first initial data frame pair set and a second initial data frame pair set; performing matching on the sensor data in the first initial data frame pair set and the second initial data frame pair set respectively based on a preset target algorithm to obtain a first associated frame pair set and a second associated frame pair set; and determining a target associated frame pair set composed of the first sensor data and the second sensor data based on the reference sensor data in the first associated frame pair set and the second associated frame pair set. According to the embodiment of the application, the historical information from a target time to an association time is associated, and the association is robust and accurate.

The application discloses a kind of sensor calibration method, device, equipment, readable storage medium and product, applied to calibration field, comprising: obtaining the full-condition data of sensor to be calibrated;Full-condition data at least includes a group of corresponding data, each group of corresponding data includes reference gap, working temperature, measured material type and the output voltage of sensor to be calibrated;Based on full-condition data, the mapping relationship between output voltage, working temperature, measured material type and reference gap is established;When mapping relationship is established and satisfies preset precision condition, sensor to be calibrated calibration ends;Wherein, reference gap is obtained by reference sensor, sensor to be calibrated and reference sensor are in the same gap position, same measured material and same working temperature environment.The present application significantly improves the calibration efficiency and detection accuracy, and can meet the high-precision and high-reliability requirements of high-speed maglev train gap detection.

This invention relates to the field of papermaking machinery and automated weighing technology, and particularly to an automatic measuring and weighing device for raw paper roll production, comprising a left weighing module, a right weighing module, a synchronous connecting rod, and a central control unit. Both the left and right weighing modules include a rigid vibration-isolated base, a linear motor, a self-centering support arm assembly, a main weighing sensor, and a reference sensor. The rigid vibration-isolated base is fixed to the ground below the conveyor track; the stator of the linear motor is fixed to the vibration-isolated base; the bottom end of the self-centering support arm assembly is driven and connected to the mover of the linear motor; the main weighing sensor is positioned on the force transmission path between the mover of the linear motor and the self-centering support arm assembly, and is used to measure the vertical load borne by the self-centering support arm assembly; the reference sensor is positioned between the stator of the linear motor and the vibration-isolated base, and is used to measure the output reaction force of the linear motor and the strain of the base.

The present invention relates to a device (1) for detecting clamping events of a locking system for motor operation of a vehicle (2), having a sensor electrode (3) and a reference sensor electrode (15), the sensor electrode and the reference sensor electrode being at least segmented around an opening (O) of the vehicle (2) that can be locked by at least one closing element (4). A control unit (5) is provided, which is configured to: - apply a potential for a charging process and a ground potential (GND) for a discharging process to the sensor electrode (3) and the reference sensor electrode (15), respectively; - detect a time period until a minimum potential threshold is reached caused by the return flow of charge through the ground potential (GND) of the sensor electrode (3) and the reference sensor electrode (15); - determine the difference between the time period detected for the sensor electrode (3) and the time period detected for the reference sensor electrode (15); - then, if the difference exceeds a predetermined threshold and the time period detected for the sensor electrode (3) deviates from a predetermined standard time period or is a standard time period detected in a state where no clamping event is detected, then infer the upcoming clamping event.