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The invention relates to quality detection techniques used for heads molded through cold pressing and aims to provide a cold pressing head deformation quantity predicating method based on deformation-induced martensite phase transformation. The deformation quantity predicating method includes specific steps of conducting a head cold pressing molding test, performing finite element simulation in a cold pressing process and creating a relation curve of the deformation quantities and the martensite phase transformation quantities of the cold pressing head; using a ferrite measuring instrument for measuring martensite phase transformation quantities of areas of the cold pressing head requiring predication respectively; and substituting the measured martensite phase transformation quantities of the different areas of the cold pressing head into the obtained relation curve of the deformation quantities and the martensite phase transformation quantities of the corresponding areas respectively, so that the deformation quantities of the areas of the cold pressing head are obtained. By adopting the deformation quantity predicating method provided by the invention, curves of the deformation quantities of transition segments, straight sections and shell parts of different austenitic stainless steel heads can be determined and the plastic deformation quantities of the heads can be obtained conveniently, quickly and accurately by using the ferrite measuring instrument. The deformation quantity predicating method is very suitable for applying to the field of engineering.

The present disclosure relates to a composition or a kit that can be used for detection or diagnosis of various diseases.

The invention provides a scale reduction method and system, a three-dimensional reconstruction method and system, a storage medium and equipment, and aims at solving the technical problem that compared with traditional monocular three-dimensional reconstruction, the development cost and the data processing complexity of the prior art are increased. The method comprises the steps: obtaining an i-thkey frame; obtaining a j-th key frame at the position with the translation vector Ti, j away from the i-th key frame; wherein each angular point coordinate of the i-th key frame is correspondingly matched with each angular point coordinate of the j-th key frame; according to the i-th key frame angular point coordinate and the j-th key frame angular point coordinate, obtaining a geometrical relationship between the i-th key frame and the j-th key frame, and obtaining a scale factor lambda for three-dimensional reconstruction.

An electronic device includes: a control unit having an interface unit for performing communication with an external host device and a state register group; and a plurality of function units for performing communication with the host device via the interface unit. The state register group has a plurality of state registers which are correlated to the function units, respectively, and indicate whether the corresponding function unit is operable and whether the corresponding unit is performing processing. When the control unit receives an instruction from the host device, the control unit transfers the instruction to a function unit if the instruction is for any of the function units, and transmits a state of the state register group as a response to the host device if the instruction is a read instruction of the state register group.

The invention relates to an exchanger device for a transformer substation and a fault warning method. The exchanger device replicates and accesses a generic object-oriented substation event packet; when the exchanger device determines that the generic object-oriented substation event packet triggers an abnormal state event, the exchanger device generates an abnormal state event confirmation request and transmits the request to a corresponding upstream exchanger device; and when the exchanger device can not receive a ready response from the upstream exchanger device, a warning message is sent out. Therefore, the exchanger device can obtain the initial triggered abnormal state event rapidly and accurately and thus maintenance is carried out conveniently.

The invention relates to quality detection techniques used for heads molded through cold pressing and aims to provide a cold pressing head deformation quantity predicating method based on deformation-induced martensite phase transformation. The deformation quantity predicating method includes specific steps of conducting a head cold pressing molding test, performing finite element simulation in a cold pressing process and creating a relation curve of the deformation quantities and the martensite phase transformation quantities of the cold pressing head; using a ferrite measuring instrument for measuring martensite phase transformation quantities of areas of the cold pressing head requiring predication respectively; and substituting the measured martensite phase transformation quantities of the different areas of the cold pressing head into the obtained relation curve of the deformation quantities and the martensite phase transformation quantities of the corresponding areas respectively, so that the deformation quantities of the areas of the cold pressing head are obtained. By adopting the deformation quantity predicating method provided by the invention, curves of the deformation quantities of transition segments, straight sections and shell parts of different austenitic stainless steel heads can be determined and the plastic deformation quantities of the heads can be obtained conveniently, quickly and accurately by using the ferrite measuring instrument. The deformation quantity predicating method is very suitable for applying to the field of engineering.

The invention discloses a method and a system for deploying metal building material formwork into and out of a warehouse. Among them, the system includes: electronic tags, radio frequency signal readers, antennas, personal computer terminals and back-end data processing units; electronic tags are set on each metal building material template, and the electronic tag is used to correspond to the specifications and current position of the metal building material template ; The radio frequency signal reader is used to identify the electronic tag information, and the electronic tag and the radio frequency signal reader are electromagnetically coupled through the antenna to realize long-distance information identification; The metal building material template is used as a preset metal building material template, and the preset metal building material template forms a model of the target product; the back-end data processing unit is used for storage or delivery deployment according to the electronic label information of the preset metal building material template. The invention solves the technical problems of slow deployment template speed and high error rate existing in the prior art.

Provided is a screen monitoring method. The screen monitoring method is applied to a digital teaching system. The method comprises that a screen picture of a teacher electronic device and a screen picture of a student electronic device are captured at the same time. Through a first image comparison method, the teacher picture and the student picture are compared to generate a first difference value. When the first difference value is greater than a first threshold value, the first difference value and a second threshold value are compared. When the first difference value is not greater than the second threshold value, through a second image comparison method, the teacher picture and the student picture are compared to generate a second difference value. When the first difference value is greater than the second threshold value or the second difference value is greater than a third threshold value, the screen picture, provided with an abnormal image, of the student electronic device is conveyed to the teacher electronic device.

The invention provides fluid warming apparatus comprising: a fan; a heater, the fan and the heater being configured to generate a heated fluid flow having a principle flow direction and an inhomogeneous temperature distribution in a distribution direction perpendicular to the said principle flow direction; and a plurality of temperature sensors offset from each other in the said distribution direction, wherein at least two of the temperature sensors are configured to measure temperatures of respective portions of the heated fluid flow having different temperatures.

A switch device and fault warning method suitable for substations. The switch device copies and accesses the general purpose-oriented substation event grouping. When the switch device judges that the general purpose-oriented substation event group triggers an abnormal state event, the switching The switch device generates an abnormal state event confirmation request and transmits it to the corresponding upstream switch device. When the switch device fails to receive a ready response from the upstream switch device, it sends a warning message, so that the initial trigger abnormality can be quickly and accurately known The switch device for status events for technical efficiency in maintenance.

The invention provides a laser drill, a laser drilling tool and a well drilling rock breaking method. The laser drill comprises a drill body (3); a camera (8) and a plurality of laser heads (1) are contained in the drill body (3); an adjusting bracket (7) capable of moving the camera (8) and / or the laser heads (1) is also contained in the drill body (3); through holes corresponding to the camera (8) and the laser heads (1) are formed in the head part of the drill body (3). The laser drilling tool containing the laser drill is provided with an underground night vision system and an aboveground control system; by the drilling rock breaking method, the problems that the hard rock stratum drilling and production efficiency is low, real-time observation cannot be performed underground, and the like are solved, the rock breaking efficiency is greatly increased, the loss of the drilling tool is reduced, and the cost is reduced.