51results about How to "Improve detectability" patented technology

The present invention relates to the automated cutting of pliable items. More particularly, the present invention relates to the automatic cutting and/or trimming of pliable items, such as a shoe upper that lacks uniformity. An image of the pliable item is captured having image features and a pattern is retrieved having pattern features, such as a proposed cut path. An image feature is compared to distance tolerances associated with pattern features to adjust the proposed cut path such that it satisfies the distance tolerances while providing a consistently sized and shaped trimmed item.

A signal evaluation method for detecting QRS complexes in electrocardiogram (ECG) signals comprises the following steps:

• • sampling of the ECG signal (4) and conversion into discrete signal values (x(n)) in chronological order;
  • comparing the signal values (x_f(n), x_fq(n)) to a threshold function (K(n)) adaptively determined therefrom;
  • determining a frequency number (D(n)) within a defined segment of the consecutive signal values, by which signal values (x_f(n), x_fq(n)) preferably fall short of the threshold function (K(n));
  • comparing the determined frequency number (D(n)) to a defined threshold (Θ), wherein an undershoot of the threshold (Θ) is significant for apresence of a QRS complex (5, 6, 7) in the defined segment of the ECG signal (4).

The invention discloses a method for detecting fluidity of slag in a coal gasifier. The method comprises the following steps of: acquiring a sound wave signal; preprocessing the sound wave signal; extracting feature parameters of the sound wave signal; building a prediction model; and detecting the fluidity of the slag. The method for detecting the fluidity of the slag in the coal gasifier by combining an acoustic emission sensor or an acceleration sensor and a wave guiding rod has the characteristics of stability, safety, environmental friendliness and the like, and is applicable to on-line detection of an industrial production process; a sound wave receiving device array is adopted, and measurement accuracy is improved by multi-sensor data fusion; and on-line detection of the fluidity of the slag is realized by a slag fluidity index number detecting technology based on sound wave detection. Compared with the prior art, the method is sensitive and is high in detection accuracy; and early warning of slag blockage is realized by a slag blockage early warning and control technology based on slag fluidity index number detection, the viscosity of the slag can be controlled within a range above or below an objective value by 5%, and the slag blockage is effectively avoided.

There is provided a method for detecting a target material, preferably a solid or liquid target material. The method may comprise the steps of targeting a material for analysis, heating the material with a heating source from a remote distance to effectively increase a temperature of the material and to effectively increase a vapor pressure of the material in an environment adjacent to the material, measuring with a sensor the material vapor in the adjacent environment from the remote distance, and detecting the identity of the material using data generated during the measuring step. There is also provided a system for detecting a target material having a low vapor pressure comprising a first energy generating source, a sensor for measuring properties of gaseous materials from a standoff distance, the sensor producing data, and a computer for determining the target material based on the data produced by the sensor.

The invention belongs to the technical field of nondestructive testing, and relates to a method for ultrasonic distinguishing of an R-region defect of a composite material structure. The method for ultrasonic distinguishing of the R-region defect of the composite material structure and a method for determining the depth position of the detected defect are constructed by utilizing the signal relationship between changes of time domain amplitude, phase position and propagation time as well as other parameters and the inside of an R-region skin, the interface between the R-region skin and an R-region filling area, the R-region filling area and the defect thereof of the detected composite material structure based on broadband narrow pulse ultrasonic reflection signals from different directions and positions of the R-region of the detected composite material structure and characteristics thereof; and the ultrasonic RF and imaging detection of the R-region of the composite material structure can be realized by adopting a soft membrane contact coupling or water-spray coupling, manual or automatic scanning mode, and the detecting thickness range of the R-region is 0.5-20mm. Actual detection results indicate that the accuracy and the reliability for distinguishing of R-region ultrasonic detection defects of the composite material structure, as well as the defect detection capability and the detectability for the R-region can be remarkably improved.

The invention belongs to the technical field of nondestructive detection and relates to an ultrasonic visual imaging method for detecting composite structure stiffener zones. On the basis of an ultrasonic reflection principle, a rapid ultrasonic scanning visual imaging method is established by selecting an ultrasonic reflector array linear scanning array transducer to realize rapid ultrasonic scanning visual imaging detections of different parts of the composite structure stiffener zone; through selecting different scanning modes and incident directions as well as the array transducer, ultrasonic visual imaging detections of different composite structure stiffener zones are realized. The actual detection effect shows that the visible degrees, defect detection rates and detection efficiencies of ultrasonic detections of the different parts of the composite structure stiffener zone are obviously enhanced; phi 3mm layering in the different parts of the composite structure stiffener zone can be detected; the visible imaging quality is very clear and a very good actual detection effect is achieved.

The present invention provides an information processing device that improves the detectability of system errors. This information processing device includes: a means that generates a state graph based on relationship change information indicating a change in the relationship between a plurality of elements included in a system, the state graph having the elements as the vertices thereof and the relationship between the elements as the sides thereof; a means that generates a normal model having the state graph as a set of conditions to be fulfilled during normal system operation, based on the relationship change information; and a means that detects system errors and outputs error information indicating detected errors, based on the state graph and the normal model.

The invention discloses a method and a device for the customization and extraction of the operation information in the software execution process, comprising an extraction point acquisition step, and a customization and extraction step for the operation information of the software, which is characterized in that: in the extraction point acquisition step, corresponding position of the operation information needed in the software codes is regarded as the information extraction position; and the information extraction point is acquired according to the information extraction position and the contents to be displayed; the customization and extraction step is used to edit information and extract scripts according to the operation information. When the software formally runs down to the information extraction point and meets extracting conditions, the scripts are extracted via the operation information; thereby the operation information is acquired and displayed. The invention has the advantages of overcoming the shortcomings in the prior art of not flexible system in acquiring operation information in software execution process, and improving the detectability for the software.

An infrared detection device includes a substrate and a heat-type light sensing element. The substrate has a recess, and a frame positioned around the recess. The heat-type light sensing element has a leg and a sensing unit, and the leg is connected onto the frame so that the sensing unit is positioned over the recess. The heat-type light sensing element includes an intermediate layer provided on the substrate, a first electrode layer provided on the intermediate layer, a sensing layer provided on the first electrode layer, and a second electrode layer provided on the sensing layer. The substrate has a linear thermal expansion coefficient larger than that of the sensing layer. The intermediate layer has a linear thermal expansion coefficient decreasing toward the first electrode layer from the substrate.

The invention discloses a mobile tag detection method based on a radio frequency identification system, which belongs to the technical field of mobile tag detection methods and overcomes the defects in the prior art. The technical problem to be solved is to provide the mobile tag detection method based on the radio frequency identification system. The technical scheme adopted by the invention is that the method comprises the following steps that a machine learning algorithm is designed to predict a mobile tag detection model, the model establishment process mainly comprises three parts, the first part is to extract three input characteristics, namely tag distribution, mobile tag speed and tag distance reader antenna distance, and the second part is to train a proposed SVM model; and the third part is used for testing the SVM model prediction mobile RFID tag. The method is suitable for the field of mobile tag detection.

The invention discloses a method and a system for detecting the mass flow rate of particles in a pneumatic conveying process, and the mass flow rate of materials conveyed in a pipeline is accurately detected through a series of treatment by collecting sound wave signals generated by the action of fluid particles in the pipeline and the wall surface of the pipeline in a non-invasive manner. The sound wave detection adopted by the invention is a non-invasive detection method, and the detection device is simple, safe, environment-friendly and suitable for online detection in the industrial production process. By adopting an acoustic sensor array, through data fusion of multiple sensors, particle flow forms, concentrations and speed distribution under different conveying flow patterns can be effectively associated with the conveying mass flow rate, so that the mass flow rate of conveyed particles can be accurately detected under different conveying conditions (different conveying flow patterns, different conveying pipelines and different conveying materials). Compared with an existing mass flow rate detection technology, the method is more sensitive, accurate and wider in application range.

An X-ray-detectable fiber contains a natural vegetable fiber having a substantial portion and a radiopaque inorganic substance contained in the substantial portion of the natural vegetable fiber. The content of the radiopaque inorganic substance in the X-ray-detectable fiber is 21 to 50 percent by weight.

The invention relates to a method for determining a beam profile of a laser beam (6), which is positioned by means of a scanner device (11) in a processing field (13), comprising: arranging at least one retroreflector (19) in the processing field (13) of the scanner device (11), which area is preferably formed in a processing chamber (15) for irradiating powder layers (3), detecting laser radiation (20) which, during scanning travel over the retroreflector (19) with the laser beam (6), is reflected back into the scanner device (11), and determining the beam profile of the laser beam (6) by using the laser radiation (20) detected during the scanning travel over the retroreflector (19). The invention further relates to an associated processing machine (1) for producing three-dimensional components (2) by means of the irradiation of powder layers (3).

The invention belongs to the fire-fighting water supply technical field in the fire-fighting facility Internet of Things system, and relates to a fire-fighting water supply monitoring system based on the Internet of Things technology. The basic concept is: a fire water supply monitoring system composed of application layer, transmission layer and perception layer. The perception layer uploads to the application layer through the transmission layer for data information storage, analysis, processing and application. The application layer is the Internet of Things application platform for fire protection facilities, the transmission layer is the network transmission of data information, the perception layer is uploaded by the Internet of Things user information device, and the Internet of Things user information device is provided by the water system information cabinet to provide data information collected by different water systems; The user information device of the Internet of Things has the basic fire protection information of the user address. The system has the functions of information collection, automatic monitoring, information transmission, information processing and application of the fire water supply system.

The present invention is directed to a sonar system that includes a transmitter configured to direct multi-frequency transmit signals into a propagation channel. Each multi-frequency transmit signal includes a first frequency and a second frequency. A receiver is tuned to receive multi-frequency return signals propagating in the propagation channel. Each multi-frequency return signal includes a first frequency return signal and a second frequency return signal. The first frequency return signal has a first phase and the second frequency return signal having a second phase. A signal processor is coupled to the receiver. The signal processor is configured to extract the first phase and the second phase from the multi-frequency return signal and calculate a phase difference. The phase difference is the difference between the first phase and the second phase. The phase difference corresponds to an acoustic impedance value of a material disposed in the propagation channel, and may be used to detect and classify a target of interest in background noise.

The invention provides an automobile-based variable parallel communication method. The method comprises the steps: message data is acquired, wherein the message data sent by a transmission ECU in an automobile CAN communication system is acquired; the data length of the message data is counted, the number of bit digits is obtained, and the number of the bit digits is taken as the number of neededcommunication channels; data content in the message data is marked according to a preset data position order to obtain marked message data; and communication channels with the same number as the needed communication channels are selected randomly, the marked message data is transmitted to a target ECU through the needed communication channels in parallel, and the target ECU conducts integration processing on the marked message data according to the preset data position order. According to the automobile-based variable parallel communication method, high-speed point-to-point data transmission is achieved, the timeliness and the examinability of the data are improved, therefore, the message data is transmitted at high speed, data queueing delay does not exist, and checking is easy.

The invention relates to a PET image reconstruction method and system. The method comprises the steps that 101, PET computing equipment acquires detection data in detection equipment; 102, the PET computing equipment acquires a regularization target function phi(x, y) = L(x, y)-beta * R(x) for reconstructing an image according to the detection data, wherein L(x, y) is a likelihood function item corresponding to the detection data, R(x) is a priori knowledge item, and beta is a regularization parameter and is used for adjusting the weights of L(x, y) and R(x); 103, the PET computing equipment determines a parameter beta in a regularization target function according to the signal-to-noise ratio information and the input parameter of the detection data; 104, the PET computing equipment reconstructs a PET image according to the determined parameter beta and the regularization target function, and finally the purpose of improving the quality of the reconstructed PET image is achieved.

The invention provides an internal combustion engine combustion state detecting device such that ascertaining a combustion state using ionic current detection is carried out accurately over a wide operating range of an internal combustion engine. The internal combustion engine combustion state detecting device includes a spark plug that has a central electrode and a grounding electrode opposing across a gap, and a discharge stopping-induced current detecting device that estimates an induced current caused by a stopping of a spark discharge generated in the gap between the central electrode and the grounding electrode, wherein an ionic current detection threshold is set to a threshold value that is not affected by the induced current using the induced current estimated by the discharge stopping-induced current detecting device.

The invention relates to the field of photoelectric detectors, in particular to a preparation method of a heterojunction photoelectric detector based on a single-walled carbon nanotube film. The preparation method comprises the following steps: firstly, preparing a high-performance flexible single-walled carbon nanotube film by utilizing a floating catalyst chemical vapor deposition method, and cutting the single-walled carbon nanotube film deposited on a microporous filter membrane into a proper size; placing the single-walled carbon nanotube thin film on the upper surface of a silicon substrate with a preset window, enabling the single-walled carbon nanotube thin film to be in close contact with the silicon substrate, removing the filter membrane, and then placing the single-walled carbon nanotube thin film in an air environment for heat treatment so as to prepare an induced oxide layer with a thickness of several nanometers at the window; and then preparing an upper electrode (elargol) and a lower electrode (indium gallium alloy) to obtain the photoelectric detector. The heterojunction photoelectric detector is simple in structure and convenient in preparation process, and the constructed photoelectric detector has excellent photoelectric detection performance and stability.

The invention relates to a communication monitoring method and device. The method comprises the following steps: acquiring communication data from a connecting line between a first communication module and a second communication module; and judging whether the communication between the first communication module and the second communication module is normal or not according to the acquired communication data. According to the technical scheme, the communication data is acquired on the connecting line between the communication modules to detect the fault of the communication module, namely, the fault is judged according to the data transmitted from the outside of the communication module. Communication monitoring devices outside the two communication modules are used for acquiring communication data from a connecting line between the two communication modules to detect faults of the two communication modules, namely, the faults are judged according to data transmitted outside the communication modules. Therefore, the communication fault is detected from a new angle, so that the fault detection has high pertinence. According to the scheme, the reliability and detectability in the communication process are improved, so that the security of communication control is improved.

The invention relates to a PET image reconstruction method and system. The method comprises the steps that 101, a multi-mode PET imaging system obtains a PET function image or an anatomical image of acurrent imaging object; 102, the multi-mode PET imaging system obtains a spatial position variable gamma jk according to the anatomical image or the PET functional image; and 103, the multi-mode PETimaging system adopts an MAP reconstruction algorithm, and obtains an estimated value of x satisfying a maximized objective function according to the spatial position variable gamma jk and the pre-established objective function of the PET image. The invention provides a method for extracting smooth priori by using a functional image or an anatomical image, functional boundary information is adaptively extracted as much as possible, the tumor edge contrast is reserved while the image noise is reduced, and finally, the purpose of improving the PET image quality and the tumor detection performance is achieved.

The invention belongs to the technical field of telephone manufacturing equipment, and discloses a folding endurance test device for an intelligent folding screen mobile phone. The device comprises a base; the surface of the base is rotatingly connected with an output shaft; the outer ring of the output shaft is fixedly connected with a rotating roller; the surface of the base is fixedly connected with an input shaft; an adjusting rod is rotatably connected to the surface of the base; a transmission ring is movably connected to the outer ring of the adjusting rod in a sleeving mode; a horizontal curved bar is rotatably connected to the surface of the base; a linkage rod is rotatably connected to the bottom end of the horizontal curved bar; a vertical curved bar is rotatably connected to the bottom end of the linkage rod; a reciprocating rod is fixedly connected to the tail end of the vertical curved bar; and the top end of the reciprocating rod is fixedly sleeved with a sub-block. According to the folding endurance test device for the intelligent folding screen mobile phone, through cooperative use of the output shaft, the rotating roller, the input shaft and the adjusting rod, the effect of freely adjusting a folding shaft to test the rotating speed is achieved.