31results about How to "Reduce the impact of changes" patented technology

The invention relates to a laser measurement method and a device for the light obscuration of inorganization-emission particulate smoke plume. The device disclosed by the invention is used for measuring the light intensity of a light source and the light intensity of a signal after passing through the smoke plume simultaneously, with less interference of environment and background light; and the light-emitting end and the light-receiving end of the device are integrated; the laser emitted by a laser device in the device disclosed by the invention is reflected via a reflector at first, and then divided into a transmitting light and a reflected light by a beam splitter; the transmitting light is detected by a light source signal detector, the reflected light is beam-expanded via an off-axis parabolic mirror and then penetrates through the to-be-measured particulate smoke plume, and then reflected back to the off-axis parabolic mirror via a corner reflector at the other side of the smoke plume; the reflected light is collected by the off-axis parabolic mirror and then received by another detector; and the signals received by the two detectors are converted by an analogue / digital converter and then output to a computer. The invention aims at providing an open-circuit type measurement device for light obscuration, which is compact in structure and strong in portability; and the device is suitable for rapid and continuous detection for the light obscuration of outdoor inorganization-emission particulate smoke plume.

The invention discloses a length measuring and tracing method using a graphene bond length as a measuring reference. The graphene bond length is used as a length measuring and tracing reference, length measuring and tracing are carried out on an object to be detected by the number of detected graphene bond lengths, and sub-nanometer grade precision length measuring and tracing are realized. Ultra-precision synchronous motion control connection is carried out on the object to be detected and a graphene reference sample bearing table, the number of the graphene bond lengths is scanned to represent the motion length of the graphene reference sample bearing table, and the motion of the graphene reference sample bearing table is detected in real time, so that the sub-nanometer grade precision length measuring is carried out on the object to be detected, and sub-nanometer grade precision length measuring and tracing are realized. As graphene lattices are used as the length measuring and tracing reference, the length measuring and tracing method has the characteristics of high stability, high measuring precision capable of reaching a sub-nanometer grade, simpleness, reliability and the like and has wide application prospects in the field of ultra-precision measuring and tracing.

The invention discloses an oil field ground wet steam flow dryness measuring device and relates to a device for measuring gas-liquid two-phase mixed fluid data such as the flow. The oil field ground wet steam flow dryness measuring device solves the problems that existing devices used for measuring parameters such as pressure, flow and dryness of wet saturated steam used for oil field steam injection are low in measuring precision, poor in accuracy, large in size and the like in practical usage. The oil field ground wet steam flow dryness measuring device comprises a flow divider, a separator and a measuring mechanism; the flow divider is connected with an inlet of the separator; the measuring mechanism is provided with measuring components in an outlet pipeline of the separator; the flow divider is a multipoint multistage flow dividing device. The oil field ground wet steam flow dryness measuring device has the advantages of being small in weight and size, compact in structure, easy to manufacture, convenient to maintain and use, high in measuring precision, being mainly used for measuring relative parameters of the gas-liquid two-phase mixed fluids used for oil fields and the like.

A fast turn on compensation system for a synthesized signal source includes a synthesized signal source coupled to a power supply and configured to generate a phase stable radio frequency (RF) output signal. A mute amplifier is coupled to the synthesized signal source and the power supply. A dummy amplifier is coupled to the mute amplifier and the power supply. A mute controller is coupled to the mute amplifier and the dummy amplifier, the mute controller is responsive to an enable signal and configured to enable the dummy amplifier and disable the mute amplifier when no RF output signal is being generated and disable the dummy amplifier and enable the mute amplifier when the RF output signal is being generated such that total power supply current delivered to the synthesized signal source and the dummy amplifier or mute amplifier is approximately constant before, during, and after enabling the mute amplifier to reduce phase disturbance of the RF output signals.

The invention discloses an injection molding device for an injection molding machine. A plasticizing part (M) and an injection part (N) are of separated structures; the injection part (N) comprises an injection cylinder body (1), an injection pipe (2) and an injection piston (3); the injection piston (3) is arranged in an inner cavity (11) of the injection cylinder body (1), and is connected with a driving part through a connecting rod; the injection pipe (2) is arranged on the front part of the injection cylinder body (1), and a material discharge channel (21) in the injection pipe (2) is communicated with the inner cavity (11) of the injection cylinder body (1); and the inner cavity (11) of the injection cylinder body (1) is communicated with a material discharge hole (41) of the plasticizing part (M) through a through hole (12). The injection molding device for the injection molding machine has the advantages that three parameters of a melt glue screw cannot be affected by axial moving, the melt glue pressure curve is stable, stable material discharging can be achieved, the phenomena of material feed quantity fluctuation and empty material discharging can be avoided, and meanwhile the linear relation of yield and speed can be achieved; and in addition, axis positions of the melt glue screw and a machine barrel can be fixed, the heating efficiency and the stability of the outer part of the machine barrel can be ensured, and the variability and lagged effects of temperature measurement and heating can be furthest reduced.

The invention relates to the technical field of a transesterification reaction test, in particular to a fast detection method of a transesterification reaction degree. The method comprises taking clear and transparent samples before and after transesterification; heating the samples before and after transesterification for melting to eliminate crystals in the samples; performing constant-temperature treatment on the melt samples before and after transesterification at 0 DEC C; performing constant-temperature treatment on the obtained samples before and after transesterification at 20 DEC C and testing the SFC value; performing constant-temperature treatment on the obtained samples before and after transesterification at 30 DEC C and testing the SFC value; and if after constant-temperature treatment at 20 DEG C and SFC value test, the difference between the SFC value of the sample after transesterification and the SFC value of the sample before transesterification is no less than 5%, and after constant-temperature treatment at 30 DEG C and SFC value test, the difference between the SFC value of the sample after transesterification and the SFC value of the sample before transesterification is no less than 3%, ending the transesterification reaction. The method shortens the time for judging the transesterification reaction degree.

The invention relates to a head support for a PET / CT (positron emission computed tomography) scanning bed. The head support comprises a head support body which is arranged on the scanning bed and comprises a bracket, wherein the bracket comprises a positioning plate connected with the scanning bed by virtue of a locking device, a head support plate which forms an upward angle with the positioning plate and two arm support plates; the two arm support plates are positioned on two sides of the head support plate and form upward angles with the head support plate; the outer sides of the head support plate and the arm support plates are wrapped with an integrally-molded head pillow. The relative positions of the head support and the scaning bed are defined, so that the influence of the abnormal status of a patient head is reduced, the image scanning quality is improved, the body posture requirements of the patient during PET / CT scanning are met, an included angle between the EML of the patient and the horizontal surface of the scanning bed is within a range of 90+ / -5 degrees, so that relatively clear brain tissue structures can be obtained in scanned images, especially the display of a subtentorial fourth ventricle and a supratentorial basal ganglia is favorable; meanwhile, both arms of the patient are effectively supported, and the comfort degree is increased.

The invention relates to the technical field of a transesterification reaction test, in particular to a fast detection method of a transesterification reaction degree. The method comprises taking clear and transparent samples before and after transesterification; heating the samples before and after transesterification for melting to eliminate crystals in the samples; performing constant-temperature treatment on the melt samples before and after transesterification at 0 DEC C; performing constant-temperature treatment on the obtained samples before and after transesterification at 20 DEC C and testing the SFC value; performing constant-temperature treatment on the obtained samples before and after transesterification at 30 DEC C and testing the SFC value; and if after constant-temperature treatment at 20 DEG C and SFC value test, the difference between the SFC value of the sample after transesterification and the SFC value of the sample before transesterification is no less than 5%, and after constant-temperature treatment at 30 DEG C and SFC value test, the difference between the SFC value of the sample after transesterification and the SFC value of the sample before transesterification is no less than 3%, ending the transesterification reaction. The method shortens the time for judging the transesterification reaction degree.

A fast turn on compensation system for a synthesized signal source includes a synthesized signal source coupled to a power supply and configured to generate a phase stable radio frequency (RF) output signal. A mute amplifier is coupled to the synthesized signal source and the power supply. A dummy amplifier is coupled to the mute amplifier and the power supply. A mute controller is coupled to the mute amplifier and the dummy amplifier, the mute controller is responsive to an enable signal and configured to enable the dummy amplifier and disable the mute amplifier when no RF output signal is being generated and disable the dummy amplifier and enable the mute amplifier when the RF output signal is being generated such that total power supply current delivered to the synthesized signal source and the dummy amplifier or mute amplifier is approximately constant before, during, and after enabling the mute amplifier to reduce phase disturbance of the RF output signals.

The invention relates to a device for measuring wet steam flow and dryness on the surface of an oil field, and relates to a device for measuring data such as the flow rate of a gas-liquid two-phase mixed fluid. It solves the problems of low measurement accuracy, poor accuracy and large structure volume in the actual use of existing devices for measuring parameters such as pressure, flow rate and dryness of wet saturated steam used for steam injection in oil fields. It includes a splitter, a separator and a measuring mechanism, the splitter is connected to the inlet of the separator, the measuring mechanism is provided with measuring components in the outlet pipeline of the separator, the The shunt is a multi-point multi-stage shunt device. The invention has the advantages of small weight and volume, compact structure, easy manufacture, convenient maintenance and use, and high measurement accuracy, and is mainly used for measuring and calculating relevant parameters of steam-water two-phase fluid used in oil fields.

The technical solution of the present invention includes an Activiti-based process and form interaction method and system, which are used to realize: create and deploy a process model; start the process and generate a process instance, and obtain the process of one or more nodes of the process instance based on the process variable rules Variable value; after the task is completed, pass the process variable and its corresponding value to the current and / or future running process through the interactive interface, so as to control the current and / or future running process flow or task executor. The beneficial effect of the present invention is: Activiti workflow and various business implementations of the business system are separated more completely, and it will be very easy to upgrade and replace the Activiti workflow software; business modules can be independently developed and deployed, centralized management, implementation and work Loose coupling between flow modules; it can realize complex and flexible process definition, form UI control and business logic execution in various scenarios.

A value of a line-to-line resistor (24) is determined by subtracting a resistance value determined as a product of a voltage ratio based on divided voltages and a value of a reference resistor in a non-conductive state between a second electric wire (26) and a third electric wire (27) from a resistance value determined as a product of a voltage ratio based on the divided voltages and the value of the reference resistor in a conductive state therebetween. Once the value of the line-to-line resistor (24) is determined, it becomes possible to determine a compensated resistance value related to temperature.

The present application provides a method and system for downloading / uploading multimedia data. The method includes: determining at least a first segment and a second segment of the multimedia data to be transmitted based on the network status; using a first parameter to download / upload the first segment Or uploading, downloading / or uploading the second segment using the second parameter, wherein the definition or data volume of the multimedia data corresponding to the first parameter and the second parameter are different. The method and system for downloading / uploading multimedia data provided by the present application can distinguish segments of multimedia data to be transmitted based on the network status, and use different parameters for downloading / uploading for different segments, that is, it can proactively and intelligently predict and Adjust accordingly in advance to minimize the impact of network changes.

The invention discloses a length measuring and tracing method using a graphene bond length as a measuring reference. The graphene bond length is used as a length measuring and tracing reference, length measuring and tracing are carried out on an object to be detected by the number of detected graphene bond lengths, and sub-nanometer grade precision length measuring and tracing are realized. Ultra-precision synchronous motion control connection is carried out on the object to be detected and a graphene reference sample bearing table, the number of the graphene bond lengths is scanned to represent the motion length of the graphene reference sample bearing table, and the motion of the graphene reference sample bearing table is detected in real time, so that the sub-nanometer grade precision length measuring is carried out on the object to be detected, and sub-nanometer grade precision length measuring and tracing are realized. As graphene lattices are used as the length measuring and tracing reference, the length measuring and tracing method has the characteristics of high stability, high measuring precision capable of reaching a sub-nanometer grade, simpleness, reliability and the like and has wide application prospects in the field of ultra-precision measuring and tracing.

The invention relates to a diagnostic device (8) for detecting defects in at least one light-emitting diode of a plurality of light-emitting diodes (6), which are connected to form a light-emitting diode column (5), which comprises the first A power supply joint (4) is connected with the second power supply joint (4). This defect should be detected with low wiring overhead. The invention stipulates that a resistance element (10) is connected in parallel to each light-emitting diode (6), and the measuring mechanism (11) is designed to be used in two power supply connections ( 4) A diagnostic current is generated between (I D ), through which the diagnostic current produces a greater forward bias (U F ) small voltage from which the corresponding light-emitting diodes (6) connected in parallel emit light, and the measuring mechanism is designed to provide the voltage value (19 ).

The invention relates to a method of lithography patterning includes forming a first resist pattern on a substrate, the first resist pattern including a plurality of openings therein on the substrate; forming a second resist pattern on the substrate and within the plurality of openings of the first resist pattern, the second resist pattern including at least one opening therein on the substrate; and removing the first resist pattern to uncover the substrate underlying the first resist pattern. The method of lithography patterning of the invention can reduce procudtion cost and reduce effection of critical dimension variation.

The invention relates to expression detecting device and method. The expression detecting device comprises a gray-scale image generating unit, a human face edge detecting unit, a dynamic complexion capturing unit, a human face contour generating unit and an expression detecting unit. The gray-scale image generating unit is used for generating a gray-scale image according to an original image. Thehuman face edge detecting unit is used for outputting a human face edge detecting result according to the gray-scale image. The dynamic complexion capturing unit is used for generating a dynamic complexion capturing result according to the original image and generating a human face and background segmenting result according to the dynamic complexion capturing result. The human face contour generating unit is used for outputting a human face contour according to the gray-scale image, the human face edge detecting result and the human face and background segmenting result. The expression detecting unit is used for outputting an expression detecting result according to the human face contour.

A cardiology rehabilitation training device and operation method, including a support rod, a lower fixing cylinder, an upper fixing cylinder, a limit sleeve, an adjustment sleeve, a limit rod, a reinforcement sleeve, an adjustment disc, a handle, and a reset sleeve. The lower part of the support rod It has a fixed sleeve, the inner side of the fixed sleeve is adapted to the fixed rod, the fixed rod is connected to the fixed sleeve, the fixed sleeve is stuck on the fixed rod, and the lower part of the fixed sleeve is connected to the balance bolt by thread, and the balance bolt is arranged on On both sides of the fixed sleeve, the upper end of the balance bolt is pushed against the lower side of the fixed rod, the upper end of the support rod is connected to the lower fixed cylinder, the upper side of the lower fixed cylinder is adapted to the upper fixed cylinder, and the two sides of the upper fixed cylinder are connected by screws The lower fixing cylinder is connected, and a sliding cavity is formed inside the lower fixing cylinder and the upper fixing cylinder, and the right side of the sliding cavity has a limiting protruding bar groove, and the limiting protruding rod grooves are symmetrically distributed on both sides of the sliding cavity.