74results about How to "Bright future" patented technology

The invention provides a full-automatic laser welder comprising a laser head, a laser head servo mechanism, a feeding and discharging device, a pressing mechanism and a transmission mechanism. The pressing mechanism comprises a plurality of pressing blocks and a pressing block support, wherein each pressing block is provided with a passage for laser emitted by the laser head to pass; and the pressing block support is elastically connected with each pressing block. The transmission mechanism is connected to the pressing block support to drive the pressing block support to move vertically so as to press or separate from corresponding connecting pieces. The laser head servo mechanism can further comprise two portal frames which are bilaterally and symmetrically arranged relative to the feeding and discharging mechanism along the X-direction, and each portable frame is provided with reinforcing ribs. The transmission mechanism can comprise a pair of transmission components which is bilaterally and symmetrically arranged relative to the feeding and discharging mechanism. The full-automatic laser welder can further comprise a gas cooling mechanism, a welding positioning unit and a controller. Therefore, pressing effects of welding spots of workpieces at different heights are guaranteed, welding temperature is lowered effectively, stability of a welding process is guaranteed, and welding optimal rate and efficiency are quite high.

The invention provides a novel acceleration layer repetitive motion planning method for a redundant manipulator. The novel acceleration layer repetitive motion planning method for the redundant manipulator comprises step one, designing novel quadratic form acceleration layer repetitive motion performance indexes to form into a quadratic form optimizing redundancy analysis scheme; step two, transforming the quadratic form optimizing redundancy analysis scheme in the step one into a QP (Quadratic Programming); step three, solving the QP in the step two through a QP solver; and step four, passing on a solved result in the step three to a lower computer controller to drive the manipulator to perform movement. The novel acceleration layer repetitive motion planning method for the redundant manipulator has the advantages of overcoming limitations of original parameter selection, being capable of selecting positive design parameters in a wide range, remarkably increasing selectable schemes of the repetitive motion planning of redundancy and having a good prospect in the engineering application field.

The invention discloses an intelligent air conditioner control system and method based on big data and particularly relates to an application of big data and cloud computing to household appliance and home furnishing management. According to the intelligent air conditioner control system, a plurality of temperature monitoring points are distributed in a city, and then, collected temperature information is uploaded to a cloud server. The server analyzes the temperature data, then computes the set temperature of an indoor air conditioner by an algorithm, and gives the optimal temperature value. The current indoor temperature collected by the air conditioner is uploaded to the cloud server, the server computes the optimal air speed of the air conditioner according to the optimal temperature and the indoor temperature and uploads the collected data in real time, the cloud server also changes the optimal temperature and air speed at any moment through computing, and the indoor is always kept in the optimal environment.

The invention discloses a fast image defogging method based on dark channel prior and a Retinex theory. The method comprises the following steps of: firstly obtaining a simplified atmospheric scattering model; then obtaining an initial estimation value and a rough estimation value of a medium transmission rate; carrying out pixel-stage fusion to obtain a final estimation value of the medium transmission rate; and finally substituting the final estimation value of the medium transmission rate into the simplified atmospheric scattering model for image restoration to obtain a defogged image. The method provided by the invention has the advantages that a higher operation speed is realized; the definition and the contrast ratio of a restored image can be effectively improved; meanwhile, better image colors are obtained; and wide prospects and great application values are realized in the fields of urban traffic, video monitoring, intelligent vehicles and the like.

The invention discloses a porphyrin derivative nano-composite preparation applied in photodynamic therapy and photothermal therapy of rheumatoid arthritis and an application thereof. The invention discloses an experimental method of a composite reagent of a water-soluble porphyrin derivative and a nano-material. The composite reagent has stable fluorescence characteristic and excellent biocompatibility. According to the composite reagent, drug release detection and tracing of an inflammation area can be realized, and enrichment in the inflammation area can be achieved through porphyrin molecule absorption of the nano-material. The experimental method provided by the invention is easy to implement, and has low toxicity and high specificity. The porphyrin derivative in the obtained composite reagent can undergo violet light excitation to generate singlet oxygen. The nanometer material in the composite reagent has excellent photothermal effect under the red light excitation condition. Drug enrichment and multi-model treatment by photodynamic therapy and photothermal therapy for inflammation disease can be realized, and the porphyrin derivative nano-composite preparation has wide medical clinical application value and prospect.

The invention relates to an LED-based mobile terminal for short-distance point-to-point high-speed bidirectional data transmission. The mobile terminal comprises: a bidirectional data communication module, for sending and receiving LED optical signals; a main control module, for starting and controlling a communication process of receiving and sending data through the LED optical signals; and a data storage module, for storing received and sent data, wherein the bidirectional data communication module comprises a physical layer device, an MAC layer device and a data bus; and the physical layer device comprises an LED optical signal sending end, a receiving end and a power source. The mobile terminal provided by the invention can achieve bidirectional point-to-point short-distance high-speed data transmission, and can achieve high-speed data transmission of which the actual transmission bit rate is 100Mbps or above in a short-distance range of 1-10cm.

The invention belongs to the technical field of welding machines, and in particular relates to a full-automatic laser welding machine for a square workpiece. The laser welding machine comprises a support table, a clamp turntable arranged on the support table, a loading and unloading manipulator for transferring the workpiece to the clamp turntable and a positioning and welding unit for positioning and welding the workpiece on the clamp turntable, wherein both the loading and unloading manipulator and the positioning and welding unit are arranged on the support table. Compared with the prior art, the laser welding machine has the advantages that: the loading and unloading manipulator can automatically finish loading and unloading of the workpiece; the turntable clamp can ensure that the positioning and welding unit keeps the material in an abundant state all the time, so that the efficiency is improved; the workpiece is jointed with an upper pressing block under the action of a jacking cylinder through a correcting block in the positioning and welding unit and then welded, so that the assembly precision can be ensured, and the high welding quality is ensured; due to double laser heads, the welding efficiency can be ensured, and the high welding quality, the welding efficiency and the welding consistency are improved; and therefore, the laser welding machine has quite broad application range and prospect.

The invention discloses a method for simulated demonstration of vehicle navigation in a central navigation system, and relates to a traffic control method for transferring navigation instructions to the vehicle. The method comprises the following steps: a demonstrator presses the navigation button of a simulated demonstration navigation terminal to send a navigation request that contains the current location to a navigation center; the demonstrator reports the destination to the navigation center by using radio voice; the navigation center calculates the optimum path, generates information data of a group of landmark point sequences on the path, and sends the information data to the navigation terminal; the navigation terminal extracts the information data of a landmark point according to the sequence of the information data of the group of landmark point sequences and divides the distance between the current location and the landmark point into a plurality of segments, decreases the distance progressively according to timing steps of a timer, and displays the prompt voice information and the videotex navigation information of the landmark point when the distance value is reduced to an initial lead value of the prompt information; when the distance value is zero, the information data of the next landmark point is extracted and the process is repeated till reaching the destination.

The invention provides phase change material wrapped thermal storage concrete and a preparation method thereof. The preparation method is characterized by taking dolomite as a coarse aggregate, bauxite powder as a fine aggregate and aluminate cement as a cementing material and adding silica micro powder, activated alumina micro powder, silicon carbide powder and adipic acid/silicon dioxide capsule granules to prepare the thermal storage material. The preparation method comprises the steps of adding 4-6% of water after drying and mixing the raw materials uniformly, then mixing water with the raw materials uniformly and putting the mixture into a steel mould, demoulding the product after putting the mixture in the steel mould at normal temperature for 24 hours, drying and curing the product at 20-25 DEG C for 72 hours, and then baking the product at 105-120 DEG C for 24 hours, thus obtaining the thermal storage material which can be used in the industrial field. The thermal storage material can be applied to dewatering and drying in the industries such as solar air conditioners, floor heating, chemical printing and dyeing and the like. The preparation method is reasonable in material selection and advanced in preparation process, thus the thermal storage material used in the industrial field can be produced at low cost. The material not only substantially improves the comprehensive properties including thermal storage, heat release efficiency and the like but also more importantly solves the technical difficulty of phase change material leakage.

The invention relates to polypeptides with anticoagulation activity and a method for screening polypeptides with anticoagulation activity by a phage display technique, belonging to the technical field of development, research and application of anticoagulant drugs. The screening method comprises the following steps: construction of protein expression vector, expression and purification of target protein, verification of target protein, elutriation of bioactive peptide capable of specifically binding target protein by phage display, polypeptide anticoagulation action in-vivo/in-vitro detection, toxicity experimentation and the like, thereby finally obtaining the polypeptides with anticoagulation activity. The polypeptides are prepared by the following steps: by using a heparin-binding epidermal growth factor as a target molecule, carrying out elutriation three times by using a phage display technique, and eluting the specific binding target molecule phage by using heparin sodium as an effective component. The polypeptides can be used for preparing anticoagulant drugs. The polypeptides have shorter sequence, are easy for synthesis, can easily implement large-scale production, and have no obvious short-term and long-term toxicity for mice in vivo, thereby having important application value in the aspect of development and research of anticoagulant drugs.

The invention belongs to the technical field of underground coal mine transportation facilities and particularly relates to a phosphor block belt conveyor capable of performing curved running and curved operation. The problem that an existing transportation device strictly restricts the efficiency of a united coal mining machine is solved. The phosphor block belt conveyor comprises a movable dragging assembly, a rubber belt, a round-link chain fixing the rubber belt, an rubber belt supporting structure and a rubber belt driving device, wherein the movable dragging assembly comprises a driving gun carrier and a plurality of common gun carriers which are sequentially hinged, hinge seats for hinge include one-degree-of-freedom hinge seats and three-degrees-of-freedom hinge seats which are consistent in length and width size, the driving gun carrier and the common gun carriers are two-wheeled vehicles, are consistent in length and width size and have the mass centers located at the centers of corresponding gun carrier frames, a wheel axle and wheels are installed in the middles of two sides of each gun carrier frame, and the distances from the centers of the wheel axles to the centers of the front and rear hinge seats are equal. The movable dragging assembly of the phosphor block belt conveyor capable of performing curved running and curved operation can be organically assembled and can be configured according to different road conditions and transfer requirements, electricity is saved, stable starting is also achieved, the driving gun carrier is independently braked and controlled in a centralized mode, and parking is stable.

The invention discloses a marine bacteria chromogenic isolation medium and application thereof. The formula of the marine bacteria chromogenic isolation medium comprises the following compositions: 2 to 3g/L of peptone, 0.1 to 1g/L of yeast cream, 8 to 20 g/L of lactose, 8 to 20 g/L of sucrose, 8 to 20 g/L of cellobiose, 0.1 to 1 g/L of sodium thiosulfate, 0.1 to 1 g/L of ammonium ferric citrate, 0.01 to 0.1 g/L of 3-amino-7-dimethylamino-2-methylphenazine hydrochloride and 10 to 20 g/L of agaragar. The marine bacteria chromogenic isolation medium can make bacteria growing positions have different colors, is convenient to detect or separate marine bacteria quickly and simply, and facilitates marine microorganism diversity study.

The invention discloses a numerical control system for a roll grinder and a control method thereof. The numerical control system comprises a communication interface card, a main shaft, an electric control device, a speed unit, a position detecting device, main-shaft motor machine tool electric appliance equipment and a feeding motor as well as a PC (Personal Computer) which is connected with the communication interface card; and the PC comprises a man-machine interface module and a real-time task module which are connected, wherein the man-machine interface module comprises a man-machine interface module body and a roll grinder grinding and machining module which is connected with the man-machine interface module body. The control method comprises the steps of selection, production, checking, explanation, interpolation and position control. By adopting the numerical control system, operators can once generate a numerical control program meeting system requirements for machining so that working efficiency is improved, and the reliability and the safety of the program are improved.

The invention belongs to the field of technologies for preparing supported catalysts, and particularly relates to a method for preparing graphene-supported palladium-iridium nano-particle catalysts and formic acid oxidation electrocatalysis application of the graphene-supported palladium-iridium nano-particle catalysts. The method includes steps of 1), adding graphene into formic acid solution and ultrasonically uniformly mixing the graphene and the formic acid solution with each other; 2), uniformly dispersing mixed solution prepared from chloroiridic acid and sodium chloropalladate under ultrasonic conditions; 3), heating mixed solution obtained at the step 2); 4), quickly injecting mixed solution obtained at the step 3) into graphene and formic acid mixed solution obtained at the step 1) and carrying out ultrasonic treatment under sealed conditions; 5), cleaning obtained products and then drying the products. The method and the formic acid oxidation electrocatalysis application have the advantages that the graphene-supported palladium-iridium nano-particle catalysts have extremely large electrochemically active specific surface areas and are extremely high in formic acid oxidation catalytic activity, high-toxicity materials are omitted, and the method is easy and convenient to implement, high in repeatability and suitable for mass production.

The invention discloses a PA-PP alloy material and a preparation method thereof. The PA-PP alloy material is prepared from the following raw materials by mass percent: 30 to 80 percent of renewable PA6 resin, 10 to 40 percent of PP resin, 0 to 40 percent of glass fibers, 0 to 10 percent of compatilizer, 0.1 to 1 percent of lubricating agent, 0.2 to 0.5 percent of nucleating agent, and 0.2 to 1 percent of antioxidant. The PA-PP alloy has the beneficial effects: the high-performance low-cost PA-PP alloy prepared by the invention adopts the renewable PA6 and PP as basic materials to be mixed with the glass fibers, compatilizer and little other auxiliary additives, so that the performance is excellent and the cost is low; and the PA-PP alloy has promising application prospect and obvious social and economic benefits in the field such as building materials, cars, electrons and electric appliances, articles for daily use and the like.

The invention discloses a personalized health management method and system. According to the personalized health management method and system of the invention, standard questionnaires are designed according to different genders and age groups; each answer in the standard questionnaires is corresponding to a corresponding risk score; the gender and age information of evaluation objects is collected; corresponding personalized health assessment questionnaires are automatically generated according to the gender and age information, and the health-related information of the evaluation objects is collected through the health assessment questionnaires; the health-related information is converted into risk scores, the combined risk scores of death risk events, absolute disease appearance risk events, and disease high-risk group risk events are calculated, the death risk, chronic disease appearance risk, and disease high-risk group risk of the evaluation objects are evaluated; individualized interventions and implementation plans are developed based on risk factors corresponding to the death risk, the chronic disease appearance risk, and the disease high-risk group risk, the plans are pushed to the evaluation objects, and plan implementation results fed back by the evaluation objects are received; and the plans are adjusted according to the fed-back plan implementation results.

The invention relates to an organic-silicon water-repellent agent. Every liter of finishing agent comprises the following components in mass by weight: 25-80g of self-crosslinking organic-silicon finishing agent, 7-20g of organic-silicon crosslinking agent, 0.01-0.1g of alkaline and the balance of deionized water. The organic-silicon water repellent agent is mainly used for durable and water-repellent finishing of cotton, polyester, nylon and blended fabrics in finishing after printing and dyeing, and simultaneously endows the fabrics with good resilience and rich handfeel; and since the organic-silicon finishing agent does not contain fluorine and a solvent, no hazard is caused to a human body and the environment, and the properties in the process of storage and transportation keep stable. The organic-silicon water-repellent agent is a green and environment-friendly water-repellent agent, thus having wide application value and prospect in the industry, especially in the aspect of water-repellent finishing of textile products.

The invention discloses a method for preparing polyurethane high resilience foam from recovered recycled polyol as a raw material. The polyurethane high resilience foam comprises a white material and a black material. The white material is a polyether composition and comprises, by mass, 50-70 parts of polyether polyol, 10-30 parts of polymer polyol, 20-30 parts of recovered recycled polyol, 0.4-1 part of a catalyst, 0.5-1.5 parts of a silicone surfactant for foam softening and 2-6 parts of a foaming agent. The black material is polyether-modified MDI. A mass ratio of the white material to the black material is 1.5-2.5: 1. The method creatively utilizes the polyurethane foam alcoholysis recovered liquid as a high resilience foam raw material, realizes cycling use of the raw material in a polyurethane industry and realizes a wide polyurethane foam recovery prospect. The high resilience foam is used for automobile components of a carpet sound insulation pad and a bumper pad block and has good feeling, good permeability, excellent sound absorption performances and a low cost.

The invention provides a preparation method for a super-lens with a plane-shaped imaging surface by using a secondary ion beam etching technology. The preparation method mainly comprises the following steps of: etching a semi-cylindrical groove by utilizing IBE (Ion Beam Etching) to obtain a circular-arc-shaped curve groove which has the same curvature radius as the semi-cylindrical groove and has a reduced diameter depth; then depositing a plurality of films in the circular-arc-shaped curve groove; and then, etching the plurality of films by utilizing the IBE to obtain the super-lens with the plane-shaped imaging surface. The preparation method can manufacture the plane-shaped super-lens without preparing a thin film with non-uniform thickness, and can obtain the circular-arc-shaped curve groove which has the same curvature as the semi-cylindrical groove and has the random diameter depth; the plurality of films with uniform thickness are deposited on the circular-arc-shaped curve groove and then the super-lens with the plane-shaped imaging surface is prepared on the circular-arc-shaped curve groove through the IBE etching technology. The preparation method only needs to adopt the conventional ion beam etching technology, a thin film depositing technology and a reaction ion etching technology to obtain the circular-arc-shaped curve groove which has the same curvature as the semi-cylindrical groove and has the random diameter depth, and the super-lens with the plane-shaped imaging surface can be prepared on the base.

The invention provides a mutant gene. The mutant gene is characterized in that the mutant gene is obtained through at least one mutation type of the following eight types comprising c. 4987T>G, c. 3617G>A, c. 5032T>G, c. 4087G>A, c. 4588C>T, c. 2861G>T, c. 718C>T and c. 4460A>G based on a human FBN1 gene. The invention further provides application of a related reagent used for detecting the mutation sites of the c. 4987T>G, the c. 3617G>A, the c. 5032T>G, the c. 4087G>A, the c. 4588C>T, the c. 2861G>T, c. 718C>T and/or the c. 4460A>G of the human FBN1 gene in preparation of a screening reagentfor the Marfan syndrome. The mutation of the sites of the c. 4987T>G, the c. 3617G>A, the c. 5032T>G, the c. 4087G>A, the c. 4588C>T, the c. 2861G>T, c. 718C>T and/or the c. 4460A>G of the human FBN1gene is applied to preparation of the auxiliary diagnostic kit for the Marfan syndrome, and the screening purpose can be achieved.

The invention discloses a quick-drying type epoxy primer and a preparation method thereof. The quick-drying type epoxy primer comprises the following components in parts by weight: 30-40 parts of epoxy resin, 0.2-1 part of leveling agent, 4-6 parts of anti-settling agent, 0.1-0.5 part of dispersant, 45-55 parts of pigment and filler, and 1-3 parts of drier. According to the technical scheme of the invention, all the performance indexes of the paint film of the primer completely reach or even exceed the indexes of commercial epoxy primers. At the same time, the quick-drying type epoxy primer is strong in versatility, and the paint film of the primer is quick to dry. Therefore, the coating period is greatly shortened.

The invention discloses an antistatic composite nano material film and a preparation method thereof. The preparation method comprises the following steps: preparing graphene oxide nanoribbons (GONRs) by an improved Hummers process, modifying with KH550 to obtain K-GONRs, and reducing with hydrazine hydrate to obtain FGONRs; blending the FGONRs with CNFs (carbon nanotubes) in the ultrasonic state to form a nano composite material; and finally, by using a TPU (thermoplastic polyurethane) resin as a matrix, carrying out solution application film forming to obtain the FGNRs-CNFs/TPU composite film. The FGNRs are attached to the framework CNFs to form the stable FGNRs-CNFs network structure, thereby being beneficial to uniform dispersion in the TPU. The FGNRs-CNFs intercalation and TPU matrix are tightly combined, so that the composite material film has excellent antistatic property and barrier property, is applicable to the increasingly developing electronic precise materials, and has wide application prospects.

The invention discloses a screening method of an anticancer medicine. The screening method of the anticancer medicine comprises the following steps: synthesizing a probe for an oligonucleotide chain coupling antibody, culturing cells, treating the cells with a medicine, detecting the interaction of cells of Hsp90 and Cdc37 by adopting an in-situ proximity ligation assay technology, and analyzing data. The interaction of cells of Hsp90 and Cdc37 can be positioned and quantified accurately, so that the high-throughput screening method of the anticancer medicine has broad prospect in the field of anticancer medicine preparation.

The invention discloses a sandy garden soil structure conditioner composed of municipal sludge, peat, cow dung, humic acid, diammonium phosphate, rare earth elements for agricultural use and calcium bentonite. When municipal sludge is directly applied to sandy garden soil, the problems of low nutrient content, high pathogene microorganism content, bad smell and inconvenience in transportation and storage and the like are caused; by use of the sandy garden soil structure conditioner, all these problems can be solved thoroughly.

The invention aims to provide a reagent assisting in identifying a sowbane mosaic virus and application thereof. The reagent provided by the invention comprises a specific primer consisting of deoxyribonucleic acid (DNA) shown as a sequence 1 in a sequence table, DNA shown as a sequence 2 in the sequence table and DNA shown as a sequence 3 in the sequence table. The reagent can also comprise a specific probe of which the nucleotide sequence is shown as a sequence 4 in the sequence table. The sowbane mosaic virus is an important quarantine harmful pest in China. A method for detecting the SoMV by a nested-RT-Realtime polymerase chain reaction (PCR) is established by three nested PCR primers and a TagMan probe. In the method, a nested PCR and real-time fluorescent PCR technology are combined organically; two sets of PCR systems which consist of three primers and a probe are verified mutually, so that the accuracy of a result is enhanced effectively; and detection sensitivity is enhanced effectively by the real-time fluorescent PCR technology. The method is correct, sensitive, simple, convenient and rapid, and the lower detection limit is up to 0.4 fg/mu l of plant total RNA.

The invention discloses waterborne two-component automotive interior paint. The waterborne two-component automotive interior paint is characterized by being prepared from the following components in parts by weight: 1.5 to 2.5 parts of dispersant, 25 to 30 parts of cosolvent, 30 to 40 parts of titanium dioxide, 20 to 30 parts of resin; 0.3 to 1 part of defoamer; 0.5 to 1 part of flatting agent; 0.5 to 1 part of substrate wetting agent; 2 to 5 parts of thickener; 3 to 6 parts of extinction powder; 0.5 to 1 part of pH regulator; and 3 to 6 parts of deionized water. Compared with other waterborneinterior paints on the market, the waterborne two-component automotive interior paint has slight odor after opening, no odorless residue after drying, is easy to construct and free from benzene, heavy metals and high content of VOC and other poisonous and harmful substances, can significantly improve an odor problem of the waterborne interior paint, provides excellent construction performance, and has greater market demands and broader prospects.

The invention belongs to a liquefied air energy-storage and power-generation system, more particularly to a liquefied air secondary energy-collection and energy-storage power-generation device which takes a plurality of energy sources as motive power and air liquefying storage as a basis, and can carry out secondary energy collection. The liquefied air secondary energy-collection and energy-storage power-generation device comprises an air compressing and liquefying device connected with power input and a steamer power-generation device matched with power output; the output of the air compressing and liquefying device is connected with a liquefied air storage device, the liquefied air storage device outputs a stable air source with the auxiliary function of a secondary energy-collection liquefying device, and the air source provides the motive power for the steamer power-generation device. The invention solves the defect that the working state of the liquefied air is not stable in the working process of the steamer power-generation device under the push of vaporization in the prior art, and has the advantages of stable working state, high system additional value, wide application range, no secondary pollution in the whole working process, and the like.

The invention discloses a multi-target detection method based on an improved VGG16 network. The multi-target detection method comprises the steps of 1, sample image enhancement in which a histogram equalization and histogram matching method is selected, and the display effect of the image is changed by changing the gray histogram of the image; 2, feature extraction model construction in whicha feature extraction network model is established and composed of a truncated VGGNet-16 network and an enhanced network layer, feature maps of different scales corresponding to parameters are generated ineach layer, target object detection is carried out on the feature maps of the different scales at the same time, and the feature maps of the different scales are used for predicting target objects ofdifferent scales; 3, setting a feature extraction model correlation function; 4, positioning a target on the extracted feature map; and 5, target positioning and setting of a feature classification loss function. According to the method, the recognition efficiency can be improved while the recognition precision is improved, so that the problems of difficult detection and difficult classification are solved.

The invention relates to a measuring device for action delay of a dry contact of electronic equipment. The measuring device comprises detection cables, a signal detection circuit, a parallel interface, a computer and a switch, wherein the detection cables are arranged at the two ends of the dry contact of the electronic equipment to be measured, the detection cables are connected with the signal detection circuit, the output end of the signal detection circuit is connected with the computer through the parallel interface, and the switch is used for being connected with the computer and the electric equipment to be measured through different interfaces. The measuring device completely accords with information streams generated when the electronic equipment used in the power industry runs actually, can guarantee that the action delay of the dry contact of the electronic equipment putting into running meets technical condition requirements, avoids power system accidents caused due to the fact that the action delay of the dry contact exceeds the standard, and reduces life and property losses. Furthermore, the measuring device is high in measurement accuracy and simple and convenient to operate, can be used in a universal method for measuring the action delay of the dry contact of the electronic equipment used in the power industry, and has extremely wide application fields and prospects.

The invention discloses a method for solving steam turbine vibration by utilizing cylinder holding of a steam turbine. The method comprises the steps that when the steam turbine is started in a cold state and a rotor reaches critical speed of rotation, a unit produces strong vibration and exceeds a vibration value of rated rotation speed, cylinder holding treatment is performed, namely steam turbine vacuum is destroyed, and all air inlet doors and a water repelling door of the steam turbine are closed. Restarting is performed after cylinder holding for 30 minutes, the unit stability exceeds the critical speed of rotation, and the vibration of the unit disappears.