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

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 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 provides a measuring system and method of total geomagnetic elements. The measuring system of the geomagnetic elements comprises a geomagnetic element sensor, an element magnetometer host and a connecting unit, wherein the geomagnetic element sensor comprises a total field sensor and a uniform magnetic field generator; one end of the total field sensor is fixed in the center on the inner side of the uniform magnetic field generator in a clamping manner; the other end of the total field sensor is connected with the uniform magnetic field generator; the element magnetometer host comprises a measuring module and a constant current source system; the measuring module comprises an excitation source, a signal conditioning module and a magnetic field measuring module; the excitation source drives the total field sensor to send a signal; the connecting unit comprises a signal transmission line and a power supply cable; the signal transmission line is connected with the total field sensor and the measuring module; the power supply cable is connected with the uniform magnetic field generator and the constant current source system; the constant current source system supplies power for the uniform magnetic field generator via the power supply cable.

The invention relates to a temperature thermocouple for a cable, belonging to the research field of cable tests. For detecting the temperatures of a conductor, an insulating layer and an outer sheath of a cable and ensuring the detection synchronism, the invention provides a needle-shaped thermocouple which can be used for detecting the temperatures of the conductor, the insulating layer and the outer sheath of the cable at the same time after being installed for one time; therefore one-point synchronous temperature detection can be realized, workload of the temperature detecting process is reduced, and the synchronism and the accuracy of the temperature detection are enhanced. The temperature thermocouple can be used for detecting temperature of each structural layer of a simulated cable in a high-voltage and ultrahigh-voltage XLPE (Cross Linked Polyethylene) power cable type test and preverification, can realize the effect of one-time installation and one-time detection and can avoid temperature detection deviation caused by difference among different thermocouples.

The invention provides an integrated frequency and power measurement device based on RFID antenna transmission. The integrated frequency and power measurement device comprises a sampling detection microwave assembly, an integrated frequency and power measurement circuit, a time base reference and local oscillator generating circuit and an RFID circuit module. Input signals enter the sampling detection microwave assembly. In the sampling detection microwave assembly, a power divider distributes the signals, a path of signals are used for power measurement, and a path of signals are used for conducting frequency measurement. The integrated frequency and power measurement device based on RFID antenna transmission has the advantages that a testing instrument is small in size, convenient to carry and capable of being used in a narrow space, single-port input and integrated measurement of frequency and power can be achieved, the testing efficiency is high, a wireless testing system is convenient to establish, the limitation of the position where a tested device is located is avoided, the testing instrument can be controlled through an upper computer, and the testing efficiency is greatly improved.

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.

The invention discloses an automatic detection line for mechanical parts, which comprises a base, a material feeding and conveying mechanism and a detection mechanism sequentially arranged on the base; the material feeding and conveying mechanism includes a detection feeding manipulator; the detection mechanism includes a detection transmission unit, a size detection unit and Coding machine; the size detection unit and the coding machine are arranged along the detection and transmission unit in sequence, the size detection unit is located between the detection and feeding manipulator and the coding machine, the detection and feeding manipulator is used to load the detection and transmission unit, and the detection and transmission The unit, the size detection unit and the coding machine are respectively used for conveying, size detection and coding marking of the parts. The automatic detection line of mechanical parts of the present invention realizes the integrated measurement of the length, inner hole and projection of mechanical parts by setting a feeding conveying mechanism and a detection mechanism, and can perform laser coding on qualified products. The invention can detect a large number of mechanical parts, and the detection efficiency is higher than manual detection, and it is more convenient, rapid and accurate.

The invention relates to an online detection system for a combustible gas detector. The online detection system comprises an annular box, a gas distribution and gas concentration analysis monitoring system, a wind speed monitoring and control system, an orientation test intelligent control system and a temperature and humidity monitoring and control system. The annular box is a closed annular space and is used for providing a simulated industrial field environment for online detection of the gas detector; the gas distribution and gas concentration analysis monitoring system is connected with the annular box; the wind speed monitoring and control system is connected with the annular box; the orientation test intelligent control system comprises an electrical control system and an orientation test bench, wherein the orientation test bench is a three-axis rotation test bench, and the orientation test bench is arranged in the annular box; and the temperature and humidity monitoring and control system is connected with the annular box. According to the invention, the on-line working environment of the combustible gas detector can be simulated, and comprehensive technical evaluation canbe carried out on the combustible gas detector more scientifically and reasonably.

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 discloses an automatic shaft measuring machine, which comprises a base, a clamping mechanism, an outer diameter measuring mechanism and an inner hole measuring mechanism; The pallet is connected and used to drive the pallet to slide on the X guide rail; the outer diameter measurement mechanism includes an outer diameter measurement bracket, an outer diameter measurement mobile unit and an outer diameter measuring device, and the outer diameter measuring mobile unit is used to drive the outer diameter measuring device Move in the Y direction and the Z direction; the inner hole measurement mechanism includes an inner hole measurement bracket, an inner hole measurement mobile unit and an inner hole measuring device, and the inner hole measuring mobile unit is used to drive the inner hole measuring device to move in the Y direction and the Z direction. The shaft automatic measuring machine of the invention can detect the key geometric dimensions of a large number of shaft parts, and has higher detection efficiency compared with manual detection; compared with manual detection, the detection is more convenient, fast and accurate.

The invention discloses a waveguide phase measurement method and device for water content and flow of an oil well, and belongs to the technical field of production logging by integrally measuring thewater content and flow of crude oil through a waveguide method. A shell of a logging instrument serves as a waveguide sensor, a plurality of receivers are arranged in a waveguide in sequence in the electromagnetic wave propagation direction, phase characteristics of electromagnetic wave propagation on different waveguide lengths are respectively measured, water content signals measured by the receivers are utilized, and then the flow of a fluid medium is obtained through correlation function processing. According to the technical scheme, the measurement accuracy of the water content of the oil-water medium in the oil well and the success rate of flow measurement can be further improved.

The invention provides a total phosphorus and total nitrogen integrated and automatic measurement system and an automatic measurement method thereof, and the system comprises a total phosphorus measurement module, a total nitrogen measurement module, and a control mainboard module which is in communication connection with the total phosphorus measurement module and the total nitrogen measurement module. Each of the total phosphorus measurement module and the total nitrogen measurement module comprises a sample introduction device and a solution transfer device connected with the sample introduction device, and the total phosphorus measurement module and the total nitrogen measurement module share a high-pressure digestion device. The total phosphorus and total nitrogen can be integrally and automatically measured, the problems of article damage, low efficiency, potential safety hazards and the like caused by frequent uncovering of the high-pressure digestion device are avoided, and the contact of operators with related toxic reagents is reduced.

The invention relates to a temperature and pressure integrated transmitter and a manufacture method thereof and belongs to the instrument technical field. The temperature and pressure integrated transmitter comprises a connector and a sleeve; a polytetrafluoroethylene gasket is embedded at the front end of the connector; a narrowing opening of the front end of the connector is provided with a PT100 platinum resistor in a sealing manner; a diffused-silicon oil injection core body is arranged in a cavity arranged eccentrically at the rear portion of the connector; a temperature transmission plate and a pressure transmission plate are fixedly arranged at a cavity at the front portion of the sleeve; the temperature transmission plate is connected with the PT100 platinum resistor through a zigzag-wired temperature signal line; the pressure transmission plate is connected with the diffused-silicon oil injection core body; the tail end of the sleeve is provided with a gas communication cable in a sealed manner; the gas communication cable is connected with the temperature transmission plate and the pressure transmission plate; and the rear end of the connector is in sealed and fixed connection with the front end of the sleeve. According to the temperature and pressure integrated transmitter of the invention, a temperature transmitter and a pressure transmitter are designed into an integrated structure, and functions originally completed by the two kinds of transmitters can be completed by one transmitter, and integrated measurement of temperature and pressure can be realized.

The invention discloses a pulse and phase integrated laser distance measurement device. The device comprises a control unit, a pulse driving unit, a laser emitter, a laser receiver, a beam splitter prism, a display unit, an ocular lens, a photoelectric converter, an operational amplifier A, a PIN detector, an operational amplifier B, a double-path high-speed comparator and a pulse timing unit. A laser generator emits pulse laser, the pulse laser is reflected to the beam splitter prism through a to-be-measured target, one path is incident to the ocular lens, the other path is incident to the laser receiver, and the photoelectric converter is connected with the double-path high-speed comparator through the operational amplifier A; the laser generator emits pulse laser to be incident to the PIN detector, the PIN detector is connected with the double-path high-speed comparator through the operational amplifier B, the double-path high-speed comparator is connected with the pulse timing unit, and the pulse timing unit is connected with the control unit. According to the invention, a pulse distance measurement and phase distance measurement combined mode is adopted, so that the product can accurately measure far and near distances and is convenient to operate and simple to use.

The invention discloses a fluorescence collection device for in-situ monitoring and analysis of soil organic pollutants, which comprises a shell, and a light source module, a front fluorescence collection module, a fluorescence imaging module and a spectrum detection module which are arranged in the shell from bottom to top in sequence, and an optical window is arranged on the side wall of the shell on one side of the front fluorescence collection module; detected soil is placed on the outer side of the optical window; measurement is easy and convenient, complex operation such as sample collection and laboratory pretreatment is not needed, synchronous collection of fluorescence images and three-dimensional fluorescence spectrums is achieved through combined work of the imaging camera and the optical fiber coupling probe system, integrated measurement of the fluorescence images and the three-dimensional fluorescence spectrums is achieved, spectral feature information of soil organic pollutants is obtained more comprehensively, and the measurement accuracy is improved. And the detection accuracy and reliability are improved.

The invention discloses an alternating-current/direct-current signal power integrated measuring device and method, which is used for outputting the power of an input signal which is an alternating-current/direct-current signal. The device comprises a voltage sampling circuit, a current sampling circuit, a hysteresis comparison circuit, an A/D conversion module and a controller; the voltage sampling circuit is used for collecting a voltage signal of the input signal; the current sampling circuit is used for collecting a current signal of the input signal; the hysteresis comparison circuit is used for judging the type of the input signal; the A/D conversion module is used for converting simulated voltage and current signals into digital signals; and the voltage sampling circuit is connectedwith the hysteresis comparison circuit and the A/D conversion module; the current sampling circuit is connected with the A/D conversion module; and the hysteresis comparison circuit and the A/D conversion module are connected with the controller. The voltage and the current of the input signal are sampled, and the hysteresis comparison circuit is adopted to judge the type of the input signal so asto realize the measurement of alternating-current/direct-current signal power.