32results about How to "Automate Calibration" patented technology

A system is provided for calibrating a device. The system includes a reference component, a sampling component, a calibration component, a comparing component and a proportional integral component. The reference component provides a reference power signal based on a voltage instruction and a current instruction. The sampling component samples a voltage signal to obtain a sampled voltage value and samples a current signal to obtain a sampled current value. The calibration component generates a calibrated power signal based on the sampled voltage value and the sampled current. The comparing component generates an error signal based on the reference power signal and the calibrated power signal. The proportional integral component and the calibration component are a feedback system that is operable to calibrate the gain of the sampled voltage and the sample current based on the error signal.

The invention discloses an on-site full-automatic pressure calibrator. The on-site full-automatic pressure calibrator comprises a shell, a power supply switch, a plurality of interfaces, a display, control components such as a keyboard and the like, a gas pressure generation unit, a power supply unit, a pressure detection unit, and a gas pressure control unit, wherein the gas pressure generation unit is a miniature gas pressure pump which is communicated with atmosphere; a pressure output pipeline is communicated with the gas pressure control unit; the pressure output ends of the pressure control unit are communicated in parallel and are used for accommodating a pressure standard machine in the pressure detection unit and a pressure joint of a meter to be detected; the pressure control unit is in signal connection with the pressure standard machine in the pressure detection unit; and the power supply unit is electrically connected with the gas pressure generation unit, the pressure control unit and the pressure standard machine in the pressure detection unit respectively. The on-site full-automatic pressure calibrator does not need external gas cylinders or alternating current (AC) power supplies, can automatically generate gas pressure and accurate standard pressure, has light self weight and small volume, is convenient to carry on site, and can automatically calibrate various on-site pressure meters.

The invention discloses a civil engineering measuring device, which comprises a base and a storage tank arranged on the upper surface of the base, a combined measurement frame is arranged in the storage tank, and the two ends of the combined measurement frame are equipped with a main telescopic device through a single adjustment device , the other ends of the two main telescopic devices are hinged at the corners on the adjacent sides of the storage tank, the inner side of the main telescopic device is provided with a secondary telescopic device, and one end of the two secondary telescopic devices is connected to the combined measurement and the other ends of the two secondary telescopic devices are connected in the middle of the side wall of the storage tank, and one of the main telescopic devices is provided with a pendulum measuring device, which provides a wealth of measuring devices and avoids the The calibration is repeated, and the horizontal calibration of the automatic measurement base point is realized, the error in the measurement process is reduced, the accuracy of the measurement data is improved, and the structure is simple and portable.

The invention discloses an analog quantity conditioning and distributing device with high precision and all-digital calibration, which comprises an instrumentation amplifier, an isolation amplifier, a verification module and an output drive module, wherein the instrumentation amplifier is used for receiving and treating field signals; the isolation amplifier is used for receiving the field signals processed by the instrumentation amplifier and then performing isolation output on the field signals; the verification module is used for receiving and verifying the signals output by the isolation amplifier; the output drive module is used for receiving the signals from the verification module and outputting the signals to a corresponding system; the verification module is connected with a general calibration device which is used for verifying the field signals output by the verification module; the general calibration device comprises an upper computer controlling the verification process and a calibration instrument controlled by the upper computer to generate standard voltage and current signals and transferring the standard voltage and current signals to the verification module; the upper computer is connected with the verification module through an SPI (serial peripheral interface); and the output drive module is connected with the calibration instrument. According to the invention, a digital potentiometer is adopted to replace a mechanical potentiometer, and the digital potentiometer is operated to change value of resistance through the SPI, so that detuning and linear error of the analog quantity conditioning and distributing device can be eliminated.

The invention provides a high-temperature calibration device for microwave dielectric material testing and a calibration method thereof. The device includes: a vector network analyzer, and two sets of waveguides respectively connected to the vector network analyzer. Joints, cooling waveguides, high-reflection and straight-through conversion waveguides, heat-insulated waveguides, high-temperature waveguides, short-circuit boards, high-reflection and straight-through conversion waveguides are slotted into high-reflection inserts to form a short circuit; the calibration method includes opening the test software and opening a slot in the waveguide Control the insertion of the high-reflection insert, run the test software for automatic calibration, test the reflection coefficients S11r and S22r in the two high-temperature waveguides at room temperature, test the S11h and S22h after loading the medium sample to be tested at high temperature, and test the S11h Carry out correction; Utilize S ' 11 after microwave loss correction, calculate the complex dielectric constant of the medium sample to be tested at temperature T; This device and method can be applied in the microwave material dielectric property high-temperature test system, can further improve The test accuracy of the test system.

The invention discloses an automatic calibration system and method for an analog input module of a nuclear-safety DCS. The automatic calibration system and method are implemented by the adoption of programmable instrument calibration equipment, wherein the programmable instrument calibration equipment comprises an upper computer, a high-precision signal generator and a multi-way switch; and the upper computer sends a command to the high-precision signal generator and controls the high-precision signal generator to generate a current signal, and the current signal is selected by the multi-way switch and output to a collection channel of the analog input module for calibration of a data collection channel and a self-diagnosis channel. According to the automatic calibration system and method,data collection channel calibration, self-diagnosis calibration and multichannel calibration of the analog input module of the nuclear-safety DCS are automatically realized only through arrangement of the programmable instrument calibration equipment; the coverage is wide, calibration of the data collection channel and the self-diagnosis channel can be realized simultaneously, and reliability andsafety are improved; and beside, the whole calibration process is automatically implemented through software, manual intervention is not needed, calibration of multiple channels can be realized simultaneously, and efficiency is high.

The present invention provides a method and device for visual projection calibration, the method comprising: S1: acquiring image information; S2: identifying the touch area and display area, and the first reference corresponding to the touch area according to the image information point and the second reference point corresponding to the display area; S3: virtualize a number of target points on the identified display area, respectively calculate the input coordinates of each target point compared to the first reference point and the comparison between each target point The output coordinates of the second reference point; S4: Import the input coordinates and output coordinates corresponding to each target point into the preset training model to obtain the calibration parameters corresponding to the current touch area and display area; S5: According to the calibration The parameter calibrates the coordinate points on the touch area and the display area. By adopting the above solution, the automatic calibration of the coordinate points of the touch area and the display area can be realized without manual clicking, which effectively reduces the calibration error and improves the calibration accuracy.

The embodiment of the present application discloses a method and device for realizing the position calibration of a medical linear accelerator. First, the first laser beam emitted by the first laser emitting device installed inside the radiation source system and projected onto the first detection surface of the photodetector is acquired. Location. Then, according to the first position and the position of the light detector relative to the origin of the coordinates of the patient support system, the position of the patient support system is adjusted so that the origin of the coordinates of the patient support system coincides with the laser projection point sent by the first laser emitting device. The gantry system is then controlled to rotate to another position, and according to the position of the gantry system, a second position where the laser light emitted by the first laser emitting device is projected onto the second detection surface of the photodetector is acquired. Adjust the movement of the patient support system according to the second position and the position of the photodetector relative to the origin of the coordinates of the patient support system, so that the origin of the coordinates of the patient support system coincides with the projection point of the laser emitted by the first laser emitting device, so as to realize automatic calibration of the patient support system .

The embodiment of the invention provides a flash memory chip testing method and system and relates to the field of chip testing technology. The method comprises the steps that a calibration device interface board is connected with a PMU (Parametric Measurement Unit); the PMU is connected with a PC; the calibration device interface board is replaced with a flash memory chip interface board at the same position; the PMU receives a first output instruction sent by the PC; the PMU supplies a stable first initial power source to the calibration device interface board; the PMU tests a first test voltage and a first test current corresponding to a calibration device at the same time; the PMU feeds the first test voltage and the first test current back to the PC; the PC configures a first calibration parameter; and then the PMU is calibrated. Since the calibration device interface board is replaced with the flash memory chip interface board at the same position for testing of a flash memory chip, automatic calibration can be realized, meanwhile, a calibration line is consistent with an actual test line, and the measurement precision of the flash memory chip is improved.