36results about How to "Reflect authenticity" patented technology

The invention discloses a method for synchronously measuring structural rigidity in guy cable structure construction. The method comprises the following steps of: adopting two pressure sensors, always monitoring the internal force of a first tensioned steel strand by using a first pressure sensor, and tensioning the residual steel strands one by one by using a second pressure sensor together witha lifting jack to track and measure the internal forces of various tensioned steel strands; tensioning the internal force of the first steel strand to reach a design value and anchoring; tensioning the second steel strand; and when the readings of the two pressure sensors are the same, stopping tensioning the second steel strand and anchoring, and recording the reading of the first pressure sensor; tensioning all residual steel strands one by one and anchoring according to a process of tensioning the second steel strand, and recording the reading of the first pressure sensor when the readingsof the two pressure sensors are the same; and substituting all measured data into a measurement formula to obtain a structural rigidity value of an anchoring structure at two ends of a guy cable.

The invention discloses a cache performance evaluation method and device. The cache performance evaluation method includes: acquiring memory addresses of n pieces of data to be accessed; adjusting various configuration parameters of a cache to be evaluated, simulating the cache to be evaluated to access the data to be accessed, and acquiring corresponding average access time at different values of various configuration parameters while the data to be accessed is accessed; and using the corresponding average access time at the different values of various configuration parameters as an evaluation result to be output. The cache performance evaluation method and device can improve the accuracy of Cache performance evaluation.

The invention discloses a business voucher matching method. The method comprises the steps of 1, obtaining element information A1 of a to-be-matched business voucher; 2, according to the element information A1, screening is conducted in a voucher database used for storing the to-be-selected business vouchers, candidate business vouchers are obtained, and the element information of the candidate business vouchers is A2; and step 3, according to the element information A1 and the element information A2, respectively calculating the relevancy between the to-be-matched commercial vouchers and eachcandidate commercial vouchers. According to the method, to-be-matched commercial vouchers are matched with to-be-selected commercial vouchers in a voucher database. and according to the element information of the two business vouchers, the relevancy between the two business vouchers is calculated to characterize the matching degree between the two business vouchers, so that the authenticity of the to-be-matched business vouchers can be reflected through verification of the to-be-selected business vouchers, manual entry for carrying out job-demanding investigation is avoided, and the efficiency and reliability are improved.

The invention provides a simulation experiment device for a building environment. The simulation experiment device comprises a case body, wherein the case body is internally provided with a wall body for testing; the wall body for testing is used for dividing the case body into a left-side part and a right-side part; a box body is arranged on a rear side wall of the left-side part of the case body; a connecting column is arranged between the left side of the rear end of the box body and the rear side wall of the case body; one end of the connecting column is fixedly conencted with the case body, and the other end of the connecting column is conencted with the box body in a hinging manner; the box body is internally provided with a transverse motor; the motor is fixedly mounted on a rear-side inner wall of the box body; a tapered transmission roller is fixedly mounted at the end part of an output shaft of the motor; an inclined guide rail is arranged at the right side of the transmission roller; the guide rail is fixedly mounted at the bottom in the box body. According to the simulation experiment device for the building environment, provided by the invention, experiment detection can be carried out on the wall body for a building through simulating different indoor and outdoor environments, conditions that wind speed and wind direction of natural wind are continuously changed can be simulated, and heat conducting conditions of the wall body for testing can be accurately measured under different conditions.

The invention provides a phase frequency characteristic measurement method for a tunable fiber Fabry-Perot (FFP) filter and application. The method comprises the following steps of: when the input signal frequency is low, adjusting the direct-current bias voltage of the tunable FFP filter so that the central wavelength of the filter is aligned with the wavelength of a laser device; when the inputsignal frequency is increased, recording time components of the peak value of input signals and the local minimal value of output optical signals through a digital storage oscilloscope; and calculating the phase difference between the local minimal value of the output optical signals and the peak value of the input signals by using the relationship between the period and the phase in a trigonometric function to obtain the phase frequency characteristics of the tunable FFP filter under different frequencies. By using the measurement result, the measurement error of the central wavelength of the tunable FFP filter can be calculated, and important reference basis is provided for time constant design of a locked loop in a wavelength locking controller.

The embodiment of the invention provides an intelligent terminal and a method of generating an electronic program guide at the same. The method comprises the steps of measuring a distance between theintelligent terminal and a user when the intelligent terminal plays an electronic program; determining that the electronic program is the favorite target program of the user based on the distance andthe duration taken for the distance measurement; and generating the electronic program guide based on recommended programs similar with the target program. The method of generating the electronic program guide at the intelligent terminal overcomes the problem of accuracy reduction of electronic program recommendation in the electronic program recommendation process due to the reasons of variable evaluation on user preferences for the electronic programs and easy occurrence of invalid pushing resulted from distribution of the user behavior data of watching the electronic programs in a relatively long time range since the time span of watching the electronic programs by the users is long.

An automobile shock absorber performance test method and an automobile shock absorber performance test system are provided. The method comprises the following steps: acquiring a rotation pulse signal of the teeth of a flywheel gear at the front end of a shock absorber and a rotation pulse signal of the teeth of an oil pump driving gear at the rear end of the shock absorber under actual working conditions as a first pulse signal and a second pulse signal respectively; performing analog-to-digital conversion on the first pulse signal and the second pulse signal to obtain a first digital signal and a second digital signal; and analyzing and comparing the first digital signal and the second digital signal to obtain an automobile shock absorber performance test result. According to the scheme, as the gear rotation pulse signals at the front and rear ends of the shock absorber in an engine power transmission path in a finished automobile environment in which all parts are constantly in rigid connection are adopted as a basis for shock absorber performance test, the result of shock absorber performance test is more accurate.

The invention provides a temperature experiment based fiber ring characteristics testing system, which is composed of a wide-spectrum light source for high-precision fiber gyroscope (1), a polarization-maintaining coupler (2), Y-shaped waveguides (3,4), a fiber ring to be tested (5), a quick temperature control testing box (6), high-sensitivity optical power meters (7,8,9), computer and software (10.11, 12) for data reception of computer serial port or GPIB port. The invention provides a fiber ring characteristics testing method without circuit matching based on temperature excitation experiment, which comprises: reflecting the influence of temperature change to optical signal polarization according to change of output power polarized by the Y-shaped waveguide, detecting symmetry of outputsignal at two ends of the fiber ring by a symmetric optical path, and detecting the influence of thermal nonreciprocal phase shift to interference effect. When applying the same testing device and testing method, the invention is capable of providing comparative index value with reliable quality of the fiber ring, and providing standard for selecting high-performance fiber ring.

The invention discloses a method for synchronously measuring structural rigidity in guy cable structure construction. The method comprises the following steps of: adopting two pressure sensors, always monitoring the internal force of a first tensioned steel strand by using a first pressure sensor, and tensioning the residual steel strands one by one by using a second pressure sensor together witha lifting jack to track and measure the internal forces of various tensioned steel strands; tensioning the internal force of the first steel strand to reach a design value and anchoring; tensioning the second steel strand; and when the readings of the two pressure sensors are the same, stopping tensioning the second steel strand and anchoring, and recording the reading of the first pressure sensor; tensioning all residual steel strands one by one and anchoring according to a process of tensioning the second steel strand, and recording the reading of the first pressure sensor when the readingsof the two pressure sensors are the same; and substituting all measured data into a measurement formula to obtain a structural rigidity value of an anchoring structure at two ends of a guy cable.

The invention discloses a pig house environment temperature detection system based on a CAN (controller area network) bus. The pig house environment temperature detection system is characterized by comprising a CAN bus based pig house environment parameter collection platform and a pig house environment multipoint temperature fusion model, wherein pig house environment factor parameters are detected, adjusted and monitored by the CAN bus based pig house environment parameter collection platform, and the pig house environment multipoint temperature fusion model realizes pig house environment multipoint temperature fusion on the basis of support degree fusion weight and grey relational degree fusion weight which are obtained by a support degree matrix and a grey relational degree matrix of temperature fuzzy values of multiple detection point temperature sensors of the pig house environment as well as linear combination weight. According to the system, the problem that regulation and control for the temperature of the pig house environment is greatly affected by the fact that a conventional pig house monitoring system does not detect the temperature of the pig house environment according to the characteristics of nonlinearity and large lag of the pig house environment temperature change, large area of a pig house, complicated temperature change and the like is effectively solved.

The invention discloses a calibration device and method for a laser displacement measurement system, and the device and method are used for carrying out on-site calibration on the laser displacement measurement system on a high-precision rigidity measurement instrument, and belong to the field of measurement and test standards. According to the invention, a gauge block is reliably positioned and conveniently placed on the three beads through a workbench tool and a three-bead measuring mechanism with magnetism, so that the problem that the measurement precision is influenced by the gas film generated between the gauge block and the three-bead measuring mechanism due to installation, repeated positioning of the gauge block and the like is solved, and the field calibration of the laser displacement measurement system is realized.

The invention provides a simulation method of wave field values of elastic waves based on two-dimensional isotropic media. The method comprises steps of according to a given speed model, determining a coordinate value corresponding to the position of a wave field excitation source; selecting seismic wavelets, determining space sampling intervals and time sampling intervals of the speed model and carrying out finite difference grid discretization on the speed model; calculating a wave field value of each grid point at each moment in the speed model, calculating wave field values corresponding to grid points at each moment of four edges of the speed model, and calculating wave field values corresponding to four corner points at each moment of the speed model; and based on the wave field values of the four corner points, the wave field values of the grid points on four edges and the wave field value of each grid point in the speed model, obtaining the wave field value of each grid point at each moment of the whole speed model. According to the invention, reflection energy from boundaries and a boundary corner point at any angle can be effectively eliminated and exploration precision is improved.

The invention discloses a method of measuring the concrete pore structure. The method comprises the following steps: pouring slurry to be measured into a forming device, after the slurry solidifies, carrying out maintenance for a required period; adopting a solvent to stop hydration, drying the mould in a vacuum drying box to obtain a sample with a cavity; melting temperature variable alloy, pouring alloy into the cavity of the dried sample, placing the sample in a thermal insulation apparatus, placing the sample on a centrifuge to carry out a centrifugal treatment to obtain a sample with a measurable pore structure, and using electron microscope and CT to measure the positions, which are occupied by the temperature variable alloy, of the sample, namely the pore structure. The molten temperature variable alloy is pressed into the pores by the centrifugal force, the shortage that the pore structure is broken by a conventional sampling method is avoided; moreover, the temperature variable alloy is nontoxic and harmless, no pollution is generated during the operation process, the human body is not harmed, the pore structure of concrete is not changed, and the reality of the concrete pore structure is represented.

The invention provides an SSD preprocessing method and system based on a Linux system, and a performance testing method and system. The SSD solid-state disk preprocessing method and the system based on the Linux system both include running the corresponding script, and carrying out the corresponding read-write processing on the corresponding SSD solid-state disk specified in the script in advance.The SSD performance test method and the system based on the Linux system carry out the corresponding read-write processing on the SSD in advance before the SSD performance test is carried out. The method and the system of the present invention are used for pre-processing the solid state disk before the SSD solid state disk performance test to make the solid state disk reach a steady state.

The invention discloses a calibration device and method for a laser displacement measurement system, and the device and method are used for carrying out on-site calibration on the laser displacement measurement system on a high-precision rigidity measurement instrument, and belong to the field of measurement and test standards. According to the invention, a gauge block is reliably positioned and conveniently placed on the three beads through a workbench tool and a three-bead measuring mechanism with magnetism, so that the problem that the measurement precision is influenced by the gas film generated between the gauge block and the three-bead measuring mechanism due to installation, repeated positioning of the gauge block and the like is solved, and the field calibration of the laser displacement measurement system is realized.

A high-frequency ground wave radar ionospheric clutter suppression method, the invention relates to a high frequency ground wave radar ionosphere clutter suppression method. In order to solve the problem that existing methods are mostly used to suppress narrow-band radio frequency interference and transient impact interference in high-frequency radars, the present invention cannot suppress ionospheric interference well, and is not suitable for wide-beam radars, and will cause first-order The lack of information on Bragg Peak and the problem of weakening wave echo energy. Compared with the traditional clutter suppression algorithm, the present invention utilizes the cross-correlation between the clutter in the multi-accumulation area of ​​the ionosphere to complete the cancellation process, while suppressing the ionosphere clutter, retains the information of the ocean wave echo and the first-order Bragg peak, and reduces A drop in normal ocean echo energy. After being processed by the method of the invention, the strong ionospheric clutter in the radar echo spectrum is obviously suppressed, the clutter suppression range is increased, and the signal-to-noise ratio of the echo is significantly improved. The invention is used in the field of high frequency ground wave radar detection.

The invention provides a cowhouse environment temperature detection system based on a wireless sensor network which consists of a cowhouse environment parameter collection platform based on a wireless sensor network and a cowhouse environment multi-point temperature fusion model. The cowhouse environment parameter collection platform based on a wireless sensor network is used for cowhouse environment temperature detection, regulation and monitoring. The cowhouse environment multi-point temperature fusion model achieves cowhouse environment multi-point temperature fusion based on a similarity fusion weight, a distance fusion weight and a game theory combination weight calculated from a similarity matrix and a distance matrix of temperature Vague values of temperature sensors of multiple detection points in a cowhouse environment, so that the accuracy, reliability and robustness of cowhouse environment temperature fusion are improved. The system effectively solves the problems that a conventional cowhouse monitoring system does not detect the temperature of a cowhouse environment according to the characteristics such as nonlinearity and large lag of temperature changes of cow environment, large area of cowhouses and complicated temperature changes, so that cowhouse environment temperature detection is greatly influenced.

The invention relates to a CAN bus-based pig house environmental temperature intelligent monitoring system. The system is characterized in that the intelligent monitoring system is composed of a CAN bus-based pig house environment parameter acquisition and intelligent prediction platform, a pig house environment multi-point temperature fusion model and a pig house environment intelligent prediction model. With the CAN bus-based pig house environmental temperature intelligent monitoring system of the present invention adopted, an existing pig house monitoring system cannot intelligently monitor and predict the temperature of the environment of a pig house according to the non-linearity and large lag of the environmental temperature change of the pig house, the large area of the pig house, complicated temperature change and other characteristics, as a result, control and adjustment of the environmental temperature of the pig house are seriously affected, while, with the CAN bus-based pig house environmental temperature intelligent monitoring system adopted, the above problem can be solved.

The invention provides an audio frequency end-to-end time delay measurement method of non-intrusive single end acquisition and an apparatus thereof. The audio frequency end-to-end time delay measurement method comprises the following steps: placing a measurement signal generator locally, closing an echo elimination function of a far-end terminal, taking a microphone close to a loudspeaker at a far end to form an audio frequency loop. One audio frequency measuring signal emitted by the signal generator directly enters into a measurement apparatus, and the other audio frequency measuring signal enters into a local terminal of a detected system, and both of them returns through a remote terminal audio frequency loop respectively. Delay inequalities of the two signals are divided by 2, and a result is taken as a measured value of audio frequency end-to-end time delay. The measurement apparatus provided in the invention comprises an audio frequency measuring signal generator, an audio frequency multipath acquisition module, an audio frequency time delay measurement unit and a data storage and display unit. The method is a non-intrusive type. Compared with the prior art, the method is not influenced by internal realization of the detected system, time delay of all link are included comprehensively, and the method has the characteristics of accuracy and convenience.