503 results about "Phase method" patented technology

A method for tuning phase relationships for a multi-port amplifier. The method includes providing a plurality of amplifiers arranged in a multi-port configuration, which has more than two amplifiers. The method includes selecting one of a plurality of test patterns to be input into one or more of the plurality of amplifiers to detect phase information of one or more of the amplifiers and detecting an output signal at a designated output coupled to the plurality of amplifiers. The method also includes adjusting a phase relation of the one or more amplifiers based upon the output signal.

The invention provides a method for preparing 6-aminocapronitrile by a gas phase method. The method uses caprolactam as a raw material, and comprises the following steps of S1, mixing caprolactam vapor with an hot ammonia gas according to a certain mass ratio; S2, subjecting a mixture of the caprolactam vapor and the hot ammonia gas, which is obtained in the step S1, to ammoniation and dehydrationreaction in a condition that a catalyst exists, so as to obtain ammoniated efflux; S3, separating and purifying the ammoniated efflux obtained in the step S2, so as to obtain the pure 6-aminocapronitrile. The method for preparing the 6-aminocapronitrile by the gas phase method, which is provided by the invention, is relatively high in reaction conversion ratio which can be up to 96 percent or above, and is simple in preparation process.

The invention discloses a multiple dispersion strengthening copper-base composite material produced in situ and a preparation method thereof; the reinforced phase comprises at least three of the following substances: titanium carbide, zirconium carbide, alumina, titanium boride, aluminum carbide, chromium oxide, zirconia, graphite and copper; wherein, the contents of titanium carbide, zirconium carbide, alumina, titanium boride, chromium oxide and zirconia are not less than 0.3% and not more than 5%, the content of aluminum carbide is not less than 0.1% and not more than 5%, the content of graphite is not less than 0.1% and not more than 1% and the balance is copper. The particle size of the reinforced phase is between 10nm to 10mu m. The preparation method adopts ball milling; pressing, sintering and squeezing processes and the technological parameters are optimized and controlled properly to obtain the multiple dispersion strengthening copper-base composite material. Because the in situ self-generation technology is adopted and various reinforced phase methods are combined, the material of the invention has higher high-temperature strength and better electroconductibility and anti-creep property compared with the traditional ceramic particle strengthening copper-base composite material.

A 3-D outline measuring method based on phase includes calibrating internal parameter of video camera by applying nonlinear means, forming measurement system to cover required region of measured object by both projector and video camera simultaneously, setting up measurement relational expression (MRE) of formed measurement system, collecting sample points by placing calibration plate at 3-4 different positions in measurement scope, substituting obtained sample points into MRE to obtain system parameter, placing measured object in said measurement scope to obtain phase value being substituted in MRE and video camera model to obtain 3-D outline of object.

The invention relates to a heterodyne three-frequency unequal range phase displacement solution phase method, and the method is as follows: selecting three frequencies, firstly adopting four-step phase shift method to obtain the package phase and average light intensity of the middle frequency, adopting two-step phase shift method to obtain the package phase corresponding to the two frequencies under the condition with known light intensity, obtaining the true phase according to the heterodyne method, adopting the contour line sine and cosine filtering method in the optical grating projection three-dimensional measurement, using stripe direction information for filtering the package phase on isophasal line, the method uses less projection picture for exactly measuring and uses the stripe direction information for filtering the package phase picture for effectively removing the inconsistent points in the package phase picture, the heterodyne three-frequency unequal range phase displacement solution phase method is used in the phase method three-dimensional shape measurement for effectively raising the measuring efficiency and measuring accuracy.

The invention discloses a phase error compensation method applied to grating three-dimensional projection measurement. The method includes the following steps: generating sine grating stripes; collecting grating stripes that are modulated by the surface of an object; pre-processing images; carrying out phase unwrapping through a phase shift method on the basis of the pre-processed stripe images; projecting a grey-scale image with a single gray value onto the surface of a standard white board; mapping regional results in the step (5) onto a target surface of a projector through an obtained ideal phase; establishing regional correction models for different regions according to the regional results; projecting the sine grating stripes onto the object; solving an initial phase through a phaseshift method, compensating the phase on the basis of established regional error compensation, and solving an actual phase; and through calibrated camera parameters and a solved absolute phase, calculating three-dimensional coordinate information of a to-be-measured object through a spatial intersection method. The method overcomes phase errors and measurement errors caused by Gamma non-linearity.

The invention provides a method for improving the ranging accuracy of a ranging radar by virtue of a TOF phase method. The method comprises the following steps that a signal modulation unit drives a modulation frequency f1 to modulate signal light, and the ranging radar transmits the modulated signal light; a photosensitive element samples an echo signal; a signal processing unit calculates phase difference phi1 and converts the phase difference phi1 into distance D1 from an object; the signal modulation unit drives a modulation frequency f2 to modulate the signal light, and the ranging radar transmits the modulated signal light; the photosensitive element samples the echo signal; the signal processing unit calculates phase difference phi2 and converts the phase difference phi2 into distance D2 from the object, wherein the modulation frequency f1 is lower than the modulation frequency f2; and the signal processing unit obtains a corrected distance value D according to D1 and D2. The method provided by the invention has the advantage that under the conditions that the hardware is not changed and the cost is not increased, the ranging accuracy, especially middle and long distance accuracy, of the ranging radar by virtue of the TOF phase method is improved.

The invention relates to a method for extracting chlorogenic acid, which belongs to the technical field of pharmaceutical chemicals. The method combines macroporous resin enrichment, ethyl acetate extraction and a mixed solvent split-phase method to achieve multi-step gradient purification of the chlorogenic acid so as to obtain a chlorogenic acid product with high purity. The method comprises the processes of water extraction, column passing, extraction, phase splitting and recrystallization. The macroporous resin adopted by the column passing process is 306 type or XAD series resin; and the split-phase agent adopted by the split-phase method is petroleum ether, chloroform or the mixture of the petroleum ether and the chloroform. The method is applicable to the process of extracting and preparing the chlorogenic acid from honeysuckles, cortex eucommiae leaves and cortex eucommiae barks.

The invention relates to a nuclear phase method for a digital transformer substation, comprising the following steps: 1) in a digital transformer substation realized in a point-to-point mode, a nuclear phase device accesses high-speed serial communication data from different interval merging units, and sends the received communication data to a personal computer (PC), and the PC randomly selects one phase voltage as a standard and respectively and intuitively inspects the correctness of the amplitude and phase relation of each phase voltage of the same voltage class or different voltage classes, thereby completing secondary nuclear phase in the process of starting the digital transformer substation; and 2) in a digital transformer substation realized in a networking mode, the nuclear phase device accesses Ethernet communication data from different interval merging units by means of an IEC61850 switched network device, and then sends the communication data to the PC, and when carrying out voltage nuclear phase, the PC randomly selects one phase voltage as a standard and respectively inspects the correctness of the amplitude and phase relation of voltages of the same voltage class or different voltage classes.

The invention discloses a ranging device based on a laser phase method, and the ranging device provided by the invention comprises a laser emitting and electro-optical modulating module, an internal-external optical path module, and a photoelectric detecting and data processing module, wherein the laser emitting and electro-optical modulating module is used for emitting an infrared laser subjected to high frequency modulation, the internal-external optical path module comprises an internal optical path and an external optical path; the infrared laser is transmitted to the photoelectric detecting and signal processing module respectively through the internal optical path and the external optical path; the photoelectric detecting and signal processing module is used for respectively performing the conversion and frequency-conversion process on the two transmitted optical signals to obtain a phase difference between two optical signals so as to obtain a to-be-measured distance value. Thedevice directly transmits the light emitted by the laser to an integrated electro-optical modulator through an optical fiber; an exit beam is transmitted to the focus point of a range finder emittinglens through the optical fiber so as to greatly simplify the optical path structure; and meanwhile, the modulation frequency of the integrated electro-optical modulator is much higher than the directmodulation frequency of the laser, thereby achieving higher measurement precision.

The present invention discloses a method for producing chlorinated polyvinyl chloride with a high chlorinity by a one-step method, namely, in a CPVC synthetic process of an aqueous phase method, an industry alcaine with 20% of water or mass concentration is used as a reaction medium, by means of improving the reaction pressure suitably and adding the dissolvability of chlorine gas in water, the reaction speed and the product chloridization uniformity degree are all improved, thereby a CPVC resin with good processability and high chlorinity will be synthesizing by one step.

This invention provides a homogeneous phase method for continuously manufacturing biodiesel oil. The method comprises: (1) mixing natural grease or waste fried oil, methanol, alkali metal hydroxide and an organic solvent that can homogenize the above mixed solution, sending into a prereactor, and preheating to obtain a homogeneous phase; (2) send ing into a tubular reactor, and continuously esterifying for 1-30 min to obtain biodiesel oil and glycerol; (3) distilling under normal pressure or reduced pressure to separate methanol and organic solvent, and separating by a separation tank to obtain biodiesel oil. The method makes grease and methanol completely mix in each other, thus largely increasing the reaction rate, shortening the reaction time, lowering the operation temperature, improving the equipment manufacture capacity.

The invention provides an easy and effective organic one-phase method. The method comprises dissolving, oxidizing, adding alkaline substances and filtering. Rhodium is recovered from the inactivated rhodium-phosphine complex catalyst by separating. An obtained rhodium-containing solid can be directly used for synthesizing the rhodium-phosphine complex catalyst, and is not required to be reduced into simple substance rhodium, so that the conventional process flow is simplified. The method has the advantages of wide application range, mild process condition, simple needed requirement, no need of burning or high-temperature treatment, small pollution, and easiness for operating.

The invention discloses a three-frequency heterodyne phase-shifting de-phasing method, which comprises the following procedures: (1) three stripes of different frequencies are selected for projecting; (2) the three stripes of different frequencies are projected; two cameras are used for taking pictures, the included angle between the optic axes of the two cameras is 0-40 degree, each camera takes 12 images of grating; (3) the grating images are de-phased by 4-step phase-shifting way, and the main relative phase is obtained; (4) the main phase is worked out; (5) phase development is carried out on the main phase, and the grey scale diagram of the phase is obtained. The invention uses secondary heterodyne technology, can reduce error, greatly improve the de-phasing accuracy, hence improve the accuracy of the measuring system. By using a method in conjunction with the heterodyne principle, the invention not only gives play to the advantage of the phase-shifting way, but also can accurately get the phase of the measured object.

The invention relates to a method for preparing linaclotide. The method comprises the following steps of A, synthesizing a pentapeptide fragment I of Fmoc-CysCysGluTyrCys-SBzl by a solid-liquid phase method, B, a nonapeptide fragment resin II of H-CysAsn(Trt)ProAlaCys(Trt)Thr(tBu)GlyCys(Trt)Tyr(tBu)-Wang resin by the solid-liquid phase method, C, adding the pentapeptide fragment I into the nonapeptide fragment resin II, carrying out thioester exchange and S-to-N acyl transfer to obtain a novel tetrakaideca-peptide fragment resin, removing a Fmoc protective group, and carrying out pyrolysis to obtain high-purity linaclotide linear peptide, and D, carrying out oxidation by a GSH/GSSH oxidation system to obtain linaclotide. Through thioester exchange and S-to-N acyl transfer, the method for preparing linaclotide is realized and has the advantages of mild synthesis conditions, high product purity, high yield and large-scale production feasibility.

The invention discloses a wireless nuclear phase instrument, which consists of a master machine, an X slave machine and a Y slave machine, wherein both the two slave machines comprise an inductive voltage sensor, an amplifier and a wireless communication module; the master machine comprises a display module, an MCU control module, a key and a wireless communication module; the slave machines also comprise an AD sampling module and an MCU control module; the wireless communication modules of the master machine and the slave machines all adopt bidirectional communication data transmission; a nuclear phase method of the wireless nuclear phase instrument comprises that: a communication protocol of an addressing mode is set in the MCU control module of the master machine, the master machine sends a signal acquisition command, the X slave machine and the Y slave machine simultaneously acquire voltage signals on a tested line, the master machine receives the data acquired by the X slave machine and the Y slave machine in time division mode, and the MCU control module calculates the phase and amplitude data and displays the data on the display module. The wireless nuclear phase instrument has the advantages of flexible and safe use, high reliability in signal transmission, signal receiving accuracy and reliable test results.

The invention discloses a method for online testing performance of lead-acid storage cells of a transformer substation. The method includes the steps that capacity of each single storage cell body is acquired through an instantaneous discharge method, the inner resistance of each single storage cell body is detected through an alternating current phase method, the instantaneous discharge method is corrected by the alternating current phase method, interference of the instantaneous discharge method in neighbors of open-circuit cells is eliminated, and then real-time online nondestructive testing of the performance of a storage cell set is achieved. According to the method for online testing the performance of the lead-acid storage cells of the transformer substation, the instantaneous discharge method and the alternating current phase method are combined, the inner resistance, the capacity and other performance parameters of each single storage cell body can be measured in real time, and then the cells with degraded performance can be found in time at the early stage of degradation of the storage cells, and severe direct current system accidents caused by degradation accumulation and intensification of the storage cells are avoided.

The invention discloses a three-dimensional scanner measuring method and device. The measuring method adopts virtual sinusoidal grating formed by interferometric fringes or spatial modulated patterns to project on a reference plane and an object surface, subjects the same to phase demodulation by a phase method, and finally obtains three-dimensional information of the object surface. The three-dimensional scanner measuring method includes steps of (1) generating sinusoidal virtualization or spatial modulation light field; (2) measuring by a small-angle grating difference-frequency method; (3) forming a light path for measuring of the small-angle grating difference-frequency in the step (2) by a color separation projection system; (4) unwrapping by small-angle difference-frequency phase. The measuring device comprises a projection system, a shooting system and a computer which are arranged on the same side of the reference plane R, the projection system is arranged above the shooting system, and the computer is respectively connected with the shooting system and a printer. The three-dimensional scanner measuring method and device overcome the defects of existing three-dimensional measuring methods, has good effect and can be applicable to the integral manufacturing industry.

The invention belongs to the field of optical measurement, and relates to an apparatus for detecting smoothness of a high-speed railway track. According to the detection apparatus, a measurement trolley (4), an optical reference station (2) and a reference marker post are mainly adopted in the method; traditional detection principles of an inertial reference method and a chord measurement method are broken; and the distance difference is measured by adopting a double-frequency laser ratio contrapuntal phase method, the smoothness of the track is measured by measuring long resolution capability, and spatial high-precision measurement is further finished by using the accuracy of time. The invention provides the new high-precision track smoothness detection method, so that technical guarantee is provided for realizing safety and comfortableness of higher speed operation in high-speed railways; and the method can be widely applied in the field of precise measurement such as linearity measurement of high-precision ultra long tracks, deformation monitoring of large dams, maintenance and detection of subway tracks and the like.