32results about How to "Meet calibration requirements" patented technology

Embodiments of the present invention provide a method and device for calibrating a temperature acquisition channel in a battery management system. The method includes: the controller sends a temperature calibration instruction carrying the current calibration channel identifier and the set resistance value corresponding to the temperature calibration point to the adapter board, and the adapter board forwards the temperature calibration instruction to the battery management system and the temperature adjustment board respectively; The adjustment board realizes setting the resistance value through the programmable resistance, and transmits the setting resistance value to the current calibration channel in the battery management system; the battery management system collects the voltage value of the current calibration channel, and sends the current calibration channel identification, setting resistance value and Voltage values ​​are stored associatively. The embodiment of the present invention uses the controller and the programmable resistance network to automatically calibrate the multi-channel temperature sensors through software control, and the process does not require manual operation; the calibration accuracy is high, which is much higher than the NTC accuracy, and can fully meet the BMU temperature acquisition channel. calibration requirements.

The invention discloses a micro-torque sensor calibrator based on a magnetic suspension effect. A microtorque sensor to be calibrated is fixed on a base by a positioning block and a clasping block; a moment arm with a circular arc side is installed on a rotating shaft; the bottom surface of the base is provided with a height adjusting support pin, and a guide column and a guide rail are installedon the height adjusting support pin; a bearing frame is installed on the guide rail, the edge of the bearing frame is slotted, and a micro-bearing is installed in a groove; a lead penetrates through the groove on the bearing frame and is hung on the micro-bearing, one end is fixed at the circular arc sides at both ends of the moment arm, and a weight is hung on the other end; a magnetic seat is installed on the guide column; and the central position of the moment arm and the central position of the magnetic seat are respectively provided with disk-shaped magnets. The invention can eliminate the bending moment applied to the rotating shaft of the microtorque sensor to be calibrated by moment arm weight during horizontal arrangement, realize pure torque loading, ensure that the torque is a constant value and meanwhile lead the moment arm to be in a suspension state, has the characteristics of simple structure, high precision and high stability and more favorably meets the calibrating requirement of the microtorque sensor.

The invention discloses a refraction adjustment method of an augmented reality device and its device, and the augmented reality device. The refraction adjustment method includes: receiving light reflected from both eyes of a user wearing the augmented reality device; The interpupillary distance of the two eyes; generating a diopter correction signal according to the interpupillary distance of the two eyes and the expected diopter, so that the diopter adjustment element can correct the diopter of the two eyes. The adjustment method can improve the comfort of using the augmented reality device.

The invention discloses a voltage or current calibration method for a frequency converter, a frequency converter and a system, and relates to the technical field of frequency converter control. The calibration method includes the following steps: obtaining the actual effective value of the voltage or current input or output by the frequency converter, and Obtain the sampling effective value of the voltage or current collected by the frequency converter; calculate the deviation multiple according to the actual effective value and the sampling effective value, and calculate the calibration sampling coefficient of the frequency converter according to the deviation multiple; use the calibration sampling coefficient to analyze the voltage or current collected by the frequency converter current for calibration. The invention calculates the calibration sampling coefficient of the voltage or current collected by the frequency converter, and uses the calibration sampling coefficient to calibrate the voltage or current collected by the frequency converter. The calibration process basically does not require manual intervention, and the voltage or current collected by the frequency converter can be quickly realized. calibration.

The invention provides an eddy current grating sensor with a self-calibration function and a self-calibration method. The sensor comprises measuring coils, a reflection conductor, a substrate and a measuring circuit. The measuring coils are of multiple forms and are arranged in pairs, phase differences of each group of measuring coils are 1 / 2 of a measuring wavelength, and thus differential wave signals are formed and outputted. As long as the sensor is pulled by a section of distance, changes of signals generated through dispersiveness of electronic parts and components and manufacturing processes can be effectively recognized and detected, and normalization coefficients of the measuring coils are obtained through calculation. In the measuring process, measuring results can be automatically calibrated and corrected. The self-calibration method has the advantages of being high in speed, low in cost, good in interchangeability and needless of extra verification devices, can meet calibration requirements of mass production, and can be popularized and applied to other sensors.

The invention provides a calibrating device for a working distance of an electron microscope. The calibrating device comprises a calibration substrate (10) for mounting on a sample stage of the electron microscope, wherein the calibration substrate (10) has a plurality of calibration planes (121) disposed along the axial direction of the calibration substrate (10) and facing an objective lens pole shoe of the electron microscope and a positioning protrusion (11) which protrudes towards the objective lens pole shoe and realizes the positioning of the calibration substrate (10) through making contact and cooperation with the objective lens pole shoe. At least three calibration holes (131) having a focusing function are arranged on at least one of the calibration planes (121) of the plurality of calibration planes (121), and when the focus of the electron microscope is constant and all the calibration holes (131) are focused at the same time, the distance from the lower surface of the objective lens pole shoe to each calibration plane (121) is the working distance set by the electron microscope. The technical scheme of the present invention effectively solves the problem that no calibrating device in the prior art is used to scan the working distance of the electron microscope.

The invention discloses a gas supply device and method for multi-working-medium gas micro-flow calibration. According to the gas supply device, a gas storage system formed by connecting a plurality of high-pressure gas bottles in parallel is used for providing multiple calibration gases, and the calibration gases conforming to the working medium actual gas can be provided. Through an electrical path converter and a pressure stabilizing system, the inlet and outlet pressure of the calibration gases is ensured, the pressure of the provided calibration gases is consistent with the actual pressure of the working medium gas, the actual work condition is better met, and working medium gas micro-flow calibration is more accurate. By means of the gas supply device and method, the calibration gases conforming to the working medium actual gas can be provided, and meanwhile the pressure of the provided calibration gases is consistent with the actual pressure of the working medium gas; and the gas supply method is simple, feasible and easy to operate.

The invention provides an intelligent manufacturing calibrating device for a sensor, and a calibrating method thereof. The intelligent manufacturing calibrating device for a sensor includes a housing, a control panel, a cylinder assembly, a gray plate assembly and a light source, wherein a separator plate is arranged in the housing, and separates the internal of the housing into an installation room and a detection darkroom; the cylinder assembly includes a first cylinder and a second cylinder which are fixed in the installation room; the gray plate assembly includes a first gray plate and a second gray plate which are arranged in the detection darkroom; the first gray plate is connected with a piston rod of the first cylinder; the second gray plate is connected with a piston rod of the second cylinder; the first gray plate is arranged above the second gray plate; the top of the housing is also provided with a test through hole which communicates with the detection darkroom; the light source is arranged in the detection darkroom; a solenoid valve of the first cylinder and a solenoid valve of the second cylinder are connected with the control panel; the light source is also connected with the control panel; and the top wall of the detection darkroom is also provided with a calibration optical sensor. Therefore, the universality and the calibrating accuracy of the intelligent manufacturing calibrating device for a sensor can be improved.