48results about How to "Realize integrated measurement" patented technology

The invention relates to a tank car comprehensive measurement system and method capable of judging leakage. The system comprises: a basic parameter measurement module which is used for obtaining the temperature information, pressure information, liquid level, density and leakage alarm information of liquid in a tank car; a GPS measurement module used for acquiring tank car positioning information; an attitude sensing module used for acquiring vehicle running state information; a comprehensive parameter processing module used for analyzing and processing the acquired multi-parameter information according to a comprehensive sensor data processing operation mode; and a background server used for displaying the data processed by the comprehensive parameter processing module and judging whether to give an alarm or not according to the liquid leakage alarm information. Therefore, the basic parameter measurement module is introduced while the basic GPS and the attitude sensor are applied, comprehensive parameters of liquid level monitoring can be improved, and key parameter data such as the liquid level, the temperature, the pressure, the density and tank leakage alarm information of dangerous chemical liquid can be measured in a high-precision mode.

The quantitative moisture measurement method for near infrared paper comprises: modulating the infrared light into near infrared lights with different wavelength and arranged as chronological order to reflect with a reflector to the emission integral semisphere to reflect and cross the paper to focus on a optical-electrical converter, sending the converted electric signal to microprocessor for pretreatment; then, transmitting into a data centralized processing unit to recognize and divide into reference signal with one path to control front amplifier and another path as the reference signal and measurement signal; calculating in the processing unit to obtain quantitative moisture content. This invention realizes online measurement with high accuracy and low cost.

The invention relates to a laser ranging device and discloses a multifunctional laser range finder comprising a monocular telescope, two laser emitting systems and two laser receiving systems. The monocular telescope is arranged between the laser transmitting systems and the laser receiving systems. The laser emitting systems consist of long-range laser emitting systems and short-range laser emitting systems. The laser receiving systems include long-range laser receiving systems and close-range laser receiving systems. On the basis of combination of the laser pulse with the phase, a novel ranging mode of close-range high-precision laser phase ranging and long-range pulsed laser ranging is realized. According to the invention, integration of pulse ranging and phase ranging modules is realized. Because the ranging principles of the pulse ranging and phase ranging modules do not interfere with each other, the used laser light sources have different wavelengths, so that integrated measurement of high-precision short-range measurement and long-range measurement of the product is realized; various application demands can be satisfied by one product; a defect of single ranging applicationdemand of the previous products is overcome; and the multi-functionalization effect of the product is represented.

The invention discloses a measuring device and method for measuring flow potential coefficient and zeta potential. When the time is poor, the liquid in the liquid storage container can flow into the sample addition container by gravity, and both the liquid storage container and the sample addition container can drain through the three-way valve; the sample addition container has a sample addition chamber and a measurement chamber. The present invention relies on gravity to transmit the liquid, without additional pumping device, and the change of the hydraulic pressure difference in the sample container caused by the liquid falling under the action of gravity can be measured through the hydraulic pressure difference measurement interface of the first measurement chamber and the second measurement chamber, then When measuring streaming potential, it is only necessary to know the drop height of the liquid level to know the streaming potential under the measured hydraulic pressure difference, and it is not necessary to maintain a constant pressure difference during the streaming potential measurement process. The measurement process is continuous and efficient, realizing the integrated measurement of streaming potential coefficient and zeta potential.

The invention relates to an aero-engine rotor assembly measuring device and three-target optimization method based on three-point weighing. Based on a four-head measuring device, a concentricity errorof the radial assembling surface and a parallelism error of the axial assembling surface of each stage of rotor are extracted; based on a three-point weighing measuring device, radial coordinates ofthe centroid of each stage of rotor are extracted; based on a rotor assembly attitude transmission model, an optimal assembly angle of each stage of rotor is obtained through genetic optimization by taking the coaxiality, the unbalance amount and the rotational inertia of a rotor assembly as three optimization targets; and based on a torsion rod measuring device, the rotational inertia of the longitudinal axis of the assembly is obtained. The device and the method can effectively solve the over-standard problem of the coaxiality, the unbalance amount and the rotational inertia of the assembledaero-engine rotor, and have the characteristics of integrated measurement of rotor geometry and mass characteristics, high one-time assembly qualification rate and reduced engine vibration.

The invention provides a method for obtaining three-dimensional accurate data by adopting a two-dimensional linear laser scanner and belongs to the field of reverse engineering and three-dimensional measurement. According to the method, a two-dimensional local coordinate system is established based on the linear laser scanner, a high-precision electrically controlled movable platform is adopted toprovide third-dimensional coordinates, and dimension raising of two-dimensional position information to three-dimensional position information of measured workpieces is achieved. For correcting three-dimensional coordinate deviations caused by clamp installing errors and manufacturing errors, a space angle compensation method is adopted to calculate a converting torque between a theoretical measurement coordinate system and an actual measurement coordinate system, thus measurement errors brought by angle deviations are eliminated, and accurate reestablishment of three-dimensional informationis achieved. The problem of high-precision measurement in the machining process of aerospace parts is effectively solved by adopting the method, the method is flexible, efficient and good in robustness, and integral measurement of non-contact and high-precision machining process is achieved.

The invention discloses an aero-engine rotor assembly measuring device based on four-point weighing and a dual-objective optimization method. The method comprises the steps of determining angular positioning of a turntable based on a circular grating; ensuring that, based on a centering and tilting device, the measurement and assembly of the concentricity, parallelism, and center of mass coordinates of a measured rotor are performed under the same reference; extracting, based on a four-probe measuring device, a concentricity error of a radial assembly surface and a parallelism error of an axial assembly surface of each stage of rotor, respectively; extracting, based on a four-point weighing measuring device, radial coordinates of the center of mass of each stage of rotor; and obtaining, based on a rotor assembly posture transfer model, an optimal assembly angle of each stage of rotor by genetic optimization taking the coaxiality and offset of the center of mass of the rotor assembly asdual optimization objectives. The device can effectively solve the problem that the coaxiality and the imbalance of the aero-engine rotor after assembly are over standards, and has the characteristics of integrated measurement of rotor geometry and quality characteristics, high one-time assembly qualification rate, and reduction of engine vibration.

The invention discloses an aircraft engine rotor assembly measuring device based on three-point weighing and a double-objective optimization method. The double-objective optimization method comprisesthe following steps: determining the angle positioning of a rotary table based on a circular grating; ensuring the measurement and assembling of the concentricity, the parallelism and the center-of-mass coordinate of a measured rotor under the same reference based on an aligning and inclination adjusting device; based on a four-probe measuring device, respectively extracting concentricity errors of radial assembly surfaces and parallelism errors of axial assembly surfaces of all levels of rotors; based on a three-point weighing measuring device, respectively extracting radial coordinates of the mass centers of all levels of rotors; based on a rotor assembly pose transfer model, taking the coaxiality and center-of-mass offset of a rotor assembly as double optimization objectives, and obtaining the optimal assembly angle of each level of rotor through genetic optimization. The method can effectively solve the problem that coaxiality and an unbalance value exceed standard after the rotorof the aircraft engine is assembled, and has the characteristics of integrated measurement of the geometric and quality characteristics of the rotor, high one-time assembly qualification rate and reduction of engine vibration.