33results about How to "Real-time display of measurement results" patented technology

The invention discloses a carbon dioxide gas analyzer and an analysis method thereof. The optical probe of the analyzer adopts a spatial double-optical path structure which is composed of a single light source, a single gas chamber and double detectors. The analysis method comprises the following steps: firstly, the values of the voltage at the two ends of the main detector and the reference detector in the optical probe are measured when the light source is turned off , then the values of the voltage at the two ends of the main detector and the reference detector are measured when the light source is turned on and after the infrared light emitted from the light source passes through the gas chamber, after the treatment of error elimination, by using the Lambert-Beer's Law as the theoretical basis and by combining with the working mechanism of a spatial double-optical path optical structure, the measurement model of the analyzer is established and calibrated, therefore, the gas concentration of carbon dioxide can be directly calculated and output by the analyzer through the measurement value. The carbon dioxide gas analyzer has the advantages of small volume, light weight, low power consumption, high reliability and high measurement accuracy.

The invention provides a ratio fringe counting method based on a dual F-P (Fabry-Perot) interferometer and a displacement sensor demodulating system. Two interference optical intensity signals are divided directly; an obtained ratio generates positive and negative pulses during a cavity length changing process of an F-P cavity after direct current items are eliminated; the increase or decrease of the F-P cavity length is judged according to the positive and negative of the pulses; and a counter counts two times when an optical path difference is changed by a wavelength. The corresponding displacement sensor demodulating system comprises a laser device, an optical fiber isolator, a first optical fiber coupler, a second optical fiber coupler, a third optical fiber coupler, a sensing unit, photoelectric detectors, a pre-amplification unit, a DSP (Digital Signal Processing) module and a peripheral display unit. The method and the system have the following benefits that sensor type calibration, operation and orientation-judgment processes are removed; the complexity of a demodulating algorithm is reduced; the theory precision of the ratio fringe counting method is two times the precision of the general fringe counting method; and due to a congenital anti-interference capacity, the miniaturization of a measurement instrument is realized by the DSP module.

An optical fiber three dimensional array type accelerator ray field analyzer provided by the present invention comprises a reception device and a detection and acquisition device, the detection and acquisition device comprises an optical fiber positioning plate, an imaging system and an image sensor, and the reception device comprises a container and at least two layers of panels which are arranged inside the container. Optical fibers are arranged on each layer of panels symmetrically, the end part of each optical fiber penetrates a hole arranged on the optical fiber positioning plate and is fixed by a clamp, the end faces of the optical fibers are imaged on the image sensor via the imaging system, and the image sensor is connected with a computer. The optical fiber three dimensional array type accelerator ray field analyzer prepared by the present invention is simple in structure and light and handy in size, is convenient to operate, and can display the measurement results real-timely at work.

The invention belongs to the technical field of metal material processing process control systems, and in particular relates to a rolling shear quality monitoring system and method based on laser and visual detection. The purpose of the invention is to improve the intelligent control level of rolling shears and improve the shearing quality of medium and thick plates. The present invention includes a system monitoring host computer, a system detection device, a system regulation and execution device, and a control system. The cutting edge clearance wedge-shaped adjustment mechanism of the present invention is driven by a servo hydraulic cylinder and regulated by a servo valve to realize the adjustment of the cutting edge clearance. The shear blade clearance wedge-shaped adjustment mechanism converts the longitudinal linear motion of the hydraulic cylinder into the horizontal and lateral motion of the shear blade, ensures the stiffness of the shear blade through the wedge block and the pressing mechanism, and realizes the control of the shear blade clearance of the rolling shear.

The invention relates to an instrument and method for measuring leaf areas, and provides an instrument and method for measuring a long-time-series field forest leaf area index (LAI). The instrument and method are used for solving the problem that an existing leaf area measuring method can not effectively obtain long-time-series data. A vertical rotation steering engine is arranged on a rotary table of a horizontal rotation steering engine and horizontally rotates along with the horizontal rotation steering engine, and a digital light intensity sensor is arranged on the vertical rotation steering engine; a time control part comprises a time control switch, the output port of a single chip microcomputer is connected with the horizontal rotation steering engine, the vertical rotation steering engine, an SD card and a display screen, the output end of the digital light intensity sensor is connected with the SDA port of the single chip microcomputer through a serial line, the output end of a clock module is connected with the SCL port of the single chip microcomputer through a serial line, and the output end of a power supply part is connected with the single chip microcomputer of a measuring part through the time control switch. The instrument is simple in structure, reasonable in design, and suitable for measuring the long-time-series field forest LAI.

The invention discloses a digital integrated circuit standard sample, which includes a signal conversion circuit, an analog-to-digital conversion circuit, and an MCU connected in sequence. The input end of the signal conversion circuit is connected to the voltage or current signal end of the integrated circuit test system, and the input end of the MCU is connected to the signal end of the integrated circuit test system. It is connected with the output end of the integrated circuit test system and the traceability module, and the output end of the MCU is connected with the control input end of the signal conversion circuit; the input end of the traceability module is connected with the voltage or current signal end; wherein the MCU is input according to the integrated circuit test system The mode control signal controls the operation mode and measurement mode type of the standard sample, and is also used to measure and calibrate the voltage or current. It can be directly used for on-line measurement and calibration of applying voltage to measure voltage, applying voltage to measure current, applying current to measure current, and applying current to measure voltage in an integrated circuit test system, and display the measurement results in real time. At the same time, it has a traceability function, which can ensure the accuracy of the calibration results.

The invention relates to an instrument and method for fast detecting a bicarbonate radical and a carbonate radical in water through a double-electrode method. The instrument is used for fast detecting the bicarbonate radical and the carbonate radical in underground water, surface water and seawater and comprises a microprocessor with a built-in intelligent temperature compensation and quantitative calculation software algorithm, a pH electrode, a carbon dioxide electrode, a signal conditioning unit, a temperature collecting unit, a human-computer interaction unit and a load power source management unit, wherein the load power source management unit is responsible for converting battery voltage into load circuit work voltage, the pH electrode and the carbon dioxide electrode are connected with input of the signal conditioning unit, output of the signal conditioning unit is connected with collection pins of the microprocessor, the temperature collecting unit is connected with collection pins of the microprocessor, and the human-computer interaction unit is connected with an I / O interface of the microprocessor and controls unit parameter setting and result displaying of the microprocessor to be completed. Low-power operation is achieved, power source support is not needed, and the problem that the bicarbonate radical and the carbonate radical in the water cannot be fast detected on a field site is solved.

The present invention discloses a mechanical sealing ring friction force measurement device and method. The measurement device comprises a loading and force measurement module 2, a displacement measurement module 3, a rotary table module 4, a control module 5, a frame-shaped pedestal 1, a supporting plate 6 fixed at the top of the pedestal 1 and a workbench 7 fixed in the pedestal. The friction force measurement method adopts two modes of the working condition state measurement and the offline state measurement. The mechanical sealing ring friction force measurement device adopts a vertical loading measurement structure, and a loading head adopts a floating loading structure, so that the problem that the loading force and the motion direction generate the unbalance loading, is avoided. On a rotation working condition and at different corner positions, a force measurement sensor and a displacement sensor measure the force and the displacement simultaneously, and the relation among the force, the displacement and the time is determined by a control system. The advantage of the present invention is that the work state of a mechanical sealing ring during an actual work process can be simulated to load and unload a rotating seal ring.

The invention provides a dual-wavelength LD self-mixing vibration measuring instrument with adjustable resolution, and the measuring instrument comprises a dual-wavelength LD for emitting laser, an optical path adjustment device, a light density filter, a to-be-detected target, a drive power supply in electrical connection with the dual-wavelength LD, a signal processing device and a data collection and analysis device, wherein the optical path adjustment device, the light density filter and the to-be-detected target are sequentially set along a transmitting optical path, and the signal processing device and the data collection and analysis device are sequentially in communication connection with the dual-wavelength LD. The invention also provides a measurement method of the measuring instrument, and the laser with the dual wavelengths outputted by the dual-wavelength LD passes through the optical path adjustment device and the light density filter to reach the to-be-detected target. The laser is reflected by the to-be-detected target and then returns to the respective resonant tube cavities to perform the self-mixing interference with the light in the resonant tube cavities. A computer carries out the analysis processing of the self-mixing signal transmitted through communication via an even equivalent wavelength Fourier transform algorithm, thereby achieving the adjustable-resolution target vibration measurement.