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46results about How to "Valid input" patented technology

Method for identifying and analyzing single-point failure mode of launch vehicle

The invention provides a method for identifying and analyzing a single-point failure mode of a launch vehicle. According to the method for identifying and analyzing the single-point failure mode of the launch vehicle, the severe degree is divided at system levels, the severe degree grade is fine divided in the identification and analysis process of a single-point failure, the division of the severe degree grade is more accurate, and necessary conditions are provided for accurate selection of an FTA top event. The single-point failure mode with the severe degree types being the type I and the type II and the occurrence possibility grades being the grade A, the grade B and the grade C is selected as the FTA top event, the causes of the launch vehicle single-point failure with a large influence on the consequence severe degree and high occurrence possibility are analyzed more deeply, the logical relationship and the interaction between all the causes are also fully analyzed, and effective input is provided for elimination and control of the single-point failure. According to the method for identifying and analyzing the single-point failure mode of the launch vehicle, the single-point failure is identified and controlled comprehensively through combination of the characteristics of FMEA and FTA, and the comprehensiveness and the effectiveness of the identification and the control of the single-point failure are guaranteed.
Owner:CHINA AEROSPACE STANDARDIZATION INST

Intercooling type two-stage absorption refrigeration system

The invention discloses an intercooling type two-stage absorption refrigeration system. The intercooling type two-stage absorption refrigeration system comprises a high-pressure generator, a condenser, a first throttling device, an intercooler, a high-pressure absorber, a first circulating pump, a second throttling device, a first solution heat exchanger a third throttling device, an evaporator, a low-pressure absorber, a second circulating pump, a fourth throttling device, a second solution heat exchanger and a low-pressure generator. Compared with a traditional two-stage absorption refrigeration system, the intercooler is added, connection pipelines are changed, and the reasonable distribution of steam of the outlet of the low-pressure generator is achieved so that the reasonable energy coupling inside the intercooler can be promoted and the medium temperature changes can be achieved; the generation temperature of the high-pressure stage and the low-pressure stage, the generator heat input and the corresponding refrigerant flow distribution are effectively regulated, an extremely-low-grade heat source can be used by the low-pressure stage, and therefore the absorbed waste heat utilization range of the two stages is widened, and the intercooling type two-stage absorption refrigeration system is wider in application range and more flexible to regulate; in addition, through the reasonable middle temperature regulation, the circulating performance coefficient can reach 0.4 or above.
Owner:ZHEJIANG UNIV

Man-machine interaction method and device

The invention discloses a human-computer interaction method and device, and the method comprises the steps: collecting a first continuous image frame based on camera equipment; recognizing a face attribute by using the first continuous image frame, recognizing a distance value between the face attribute and the camera equipment, and judging whether the distance value is within an effective distance or not; when it is judged that the distance value is within the effective distance, the face orientation angle is determined through the face attributes, whether the face orientation angle is an effective angle or not is judged, and whether the time when the face orientation angle is the effective angle lasts for preset duration or not is judged; if the face orientation angle is the effective angle and the time when the face orientation angle is the effective angle lasts for a preset duration, collecting audio and judging whether the audio contains human voice or not, collecting a second continuous image frame at the same time, obtaining face features in the second continuous image frame, and judging whether the speaker is speaking or not at least based on the face features; and if the speaker is speaking, combining the audio and the facial features to obtain an effective audio.
Owner:AISPEECH CO LTD

Forming process of ice-cold type mask with blasting beads

The invention relates to the field of disposable hygienic products, in particular to a forming process of an ice-cold type mask with blasting beads. The forming process solves the technical problem that an ice-cold type mask with the blasting beads in the prior art is low in production efficiency. The forming process comprises the following steps that firstly, a nose bridge strip is cut off afterbeing unwound, and the cut-off nose bridge strip is input and adheres to a strip-shaped non-woven fabric at intervals; secondly, an outer-layer non-woven fabric, a melt-blown non-woven fabric and an inner-layer non-woven fabric are unwound, blasting bead particles adhere to the inner-layer non-woven fabric at intervals, the strip-shaped non-woven fabric is clamped between the melt-blown non-wovenfabric and the inner-layer non-woven fabric, and therefore a mask base material is formed; thirdly, the middle of the mask base material is folded and then flattened; fourthly, the mask base materialis subjected to hot pressing, and a peripheral indentation on the peripheral side of the mask, a limiting indentation surrounding the nose bridge strip and a positioning indentation surrounding the blasting bead particles are formed; fifthly, an ear strip material is unwound, cut, adsorbed and conveyed and finally compounded on the mask base material; and sixthly, slitting and outputting are conducted.
Owner:泉州市嘉佰利卫生材料有限公司

Passive terahertz security check method and system and medium

The invention provides a passive terahertz security check method and system and a medium, and the method comprises the steps: judging whether a collected terahertz image is a first strip-shaped background image or not, and obtaining a global mean line vector of the image; removing stripe interference information in the original image; performing gray histogram extraction; distinguishing the difference between the background and the foreground by adopting an image segmentation algorithm, and extracting a segmentation threshold; performing secondary threshold segmentation processing according tothe segmentation threshold, and removing background interference; performing histogram equalization operation on the pixels; performing morphological processing; performing weighting processing on the image to obtain a final image; and establishing a YOLOV3 framework based on deep learning, configuring an operation environment, taking a final image as input for detection, and outputting a final type of suspicious dangerous goods carried by a human body. The deep learning detection has a higher recognition rate and a more reliable classification result, and successfully solves the problem thathidden suspicious dangerous goods are difficult to accurately recognize in a terahertz image.
Owner:上海微波技术研究所(中国电子科技集团公司第五十研究所)

Assembly type machine room with heat dissipation function

The invention discloses an assembly type machine room with a heat dissipation function, and relates to the technical field of assembly type machine rooms. The assembly type machine room comprises a machine room body, a second water drainage pipe fixedly communicates with the lower portion of the left side face of the machine room body, the outer surface of the second water drainage pipe is sleevedwith a third valve, the second water drainage pipe fixedly communicates with the lower portion of the left side face of the machine room body and located below a water feeding pipe, the outer surfaceof the second water drainage pipe is sleeved with a second valve, and a second cavity is formed inside the bottom end of the machine room body. Since the assembly type machine room with the heat dissipation function is provided with a first water conveying pipe which is cooperated with an air cooler, an exhaust fan and an exhaust tube, cold air can be effectively input into the machine room body,air in the machine room body is exchanged, hot air in the machine room body is exhausted, cold air is input into the machine room body, therefore, the heat dissipation effect on the machine room bodyis achieved, and the problem that an existing assembly type machine room is poor in heat dissipation effect is solved.
Owner:吴磊

Transverse moving rotating wheel funnel device

PendingCN111348488AAutomated Orientation ChangesValid inputFilament handlingYarnBobbin
The invention relates to the technical field of textile machinery, in particular to a transverse moving rotating wheel funnel device. In the prior art, the large ends and small ends of bobbins are sorted through a sorting manipulator and a bobbin arranging machine, and conveying is manually carried out for bobbin collection, so that the cost is high. The transversely moving rotating wheel funnel device is characterized in that an inlet transverse moving conveyor is arranged on two lifting stand column welding parts, a rockover funnel part is arranged on the lifting stand column welding part atthe single side, the outlet in the inlet transverse moving conveyor is located at the inlet in the rockover funnel part, a transverse conveying belt side plate and a transverse conveying belt motor plate are arranged on the two sides of a motor plate lower supporting plate in the inlet transverse moving conveyor, a driving roller and a driven roller are arranged at the two ends of the transverseconveying belt side plate and the transverse conveying belt motor plate, a transverse conveying belt is arranged between the two rollers, a first driving wheel synchronous pulley and a second drivingwheel synchronous pulley are arranged at the ends of the driving roller and a direct-current motor respectively, the two synchronous pulley are connected by a first annular synchronous belt, and a yarn selector part is arranged above the driven roller. According to the device, the structure is simple, the size is small, the bobbin self-weight principle is effectively utilized, and the automatic direction change, from transverse direction to longitudinal direction in which the large ends are lower, of the bobbins is achieved.
Owner:浙江宝耀智能科技有限公司

Detection system and method for crane transmission mechanism and crane

The invention provides a detection system and method for a crane transmission mechanism, and a crane, and belongs to the technical field of detection. The transmission mechanism comprises a motor, a speed reducer and a winding drum, and the motor is used for driving the speed reducer to drive the winding drum to rotate. The system comprises a first detection unit which connected with the motor and used for detecting rotation information of the motor and sending the rotation information of the motor to a control unit; a second detection unit which is connected with the winding drum and used for detecting rotation information of the winding drum and sending the rotation information of the winding drum to the control unit; and a control unit which is used for determining a first comparison result of the rotation information of the motor and the rotation information of the winding drum based on the transmission ratio between the motor and the winding drum and determining whether the transmission mechanism breaks down or not according to the first comparison result. By means of the scheme, the state of the transmission mechanism is analyzed in a mutual correction mode, the advantages of being good in reliability and high in accuracy are achieved, effective input can be provided for safety limiting, and the safety of the transmission mechanism can be improved.
Owner:ZOOMLION HEAVY IND CO LTD +1

Voice car-sharing system

The invention relates to a voice car-sharing system, which belongs to the field of taxis, and achieves the aims that passengers in the distance can know the way that a taxi is going to and can decide whether to take the taxi or not in advance, so that the inquiry time of the passengers and that of a driver are saved; meanwhile, the driver is reminded of the advancing direction in real time, so that the empty load is avoided; in addition, the driver can timely and effectively input car-sharing information through a voice control device. The voice car-sharing system comprises the voice control device and an electronic display screen, and carries out data communication through a wireless way, wherein the voice control device is applicable to acquiring and sending car-sharing information, processing acquired voice signals, converting into character signals and sending to the electronic display screen; the electronic display screen is applicable to receiving and displaying the car-sharing information, comparing the received character signals with a stored preset word stock, and outputting character information with the highest similarity, such as street names and landmark buildings. The voice car-sharing system provided by the invention is simple in structure, high in stability and wide in market prospect.
Owner:JILIN AGRICULTURAL UNIV

Power supply circuit of electric sewing machine

The invention discloses a power supply circuit of an electric sewing machine. The power supply circuit comprises a rectifying circuit and a switch power supply circuit, wherein the rectifying circuit has an input end and an output end; the input end is coupled to an external mains supply while the output end outputs a direct current power supply; the switch power supply circuit has an input end and an output end; and the input end is coupled to the output end of the rectifying circuit so as to modulate the direct current power supply at the output end of the rectifying circuit and then to output a low voltage power supply. According to the power supply circuit of the electric sewing machine, the alternating current of the external mains supply can be converted into direct current effectively due to the rectifying circuit; and meanwhile, due to the switch power supply circuit, an effect of carrying out voltage drop processing on the direct current and then outputting the processed direct current to the each chip of the drive so as to supply power to each chip can be effectively realized.
Owner:浙江逸达科技有限公司

An intermediate cooling two-stage absorption refrigeration system

The invention discloses an intermediate cooling two-stage absorption refrigeration system, comprising a high-pressure generator, a condenser, a first throttling device, an intercooler, a high-pressure absorber, a first circulation pump, a second throttling device, The first solution heat exchanger, the third throttling device, evaporator, low-pressure absorber, second circulating pump, fourth throttling device, second solution heat exchanger and low-pressure generator, compared with the traditional two-stage absorption Refrigeration system, the present invention adds an intercooler and changes the connecting pipeline, promotes reasonable energy coupling inside the intercooler through reasonable distribution of steam at the outlet of the low-pressure generator, realizes the change of the intermediate temperature, and effectively adjusts the temperature and generation of high and low pressure stages. The heat input of the device and the corresponding refrigerant flow distribution enable the low-pressure stage to use extremely low-grade heat sources, thereby increasing the utilization range of waste heat absorbed by the two stages, making it more applicable and more flexible to adjust; in addition, through reasonable intermediate temperature adjustment , The cycle performance coefficient can reach more than 0.4.
Owner:ZHEJIANG UNIV
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