46results about How to "Reduce the possibility of false positives" patented technology

The present invention generally relates to an improved system and method for providing email classification. Specifically, the present invention relates to an email classification system and method for analyzing the signature of an email for proper classification.

The invention discloses a quality monitor soft sensing method based on a rubber mixing process. An upper subsidiary engine, an automatic sampling system, a quality inspection system and a Mooney viscosity on-line automatic measurement model on a rubber mixing production line are automatically associated; the automatic sampling system carries out quality inspection sample acquisition on a current production train number and transmits the sample to the quality inspection system to obtain rheological parameters required; current rheological parameters are transmitted to the Mooney viscosity on-line automatic measurement model, and a Mooney viscosity value ynew is automatically output according to f: x->y; the Mooney viscosity value ynew is read out and transmitted to the quality inspection system, which will carry out corresponding technical adjusting on mixing process of a subsequent train number, according to contrast of the Mooney viscosity value ynew and a preset Mooney viscosity value scope, so as to automatically detect whether a new production task is for the production line. The invention saves a large amount of costs on purchasing and maintaining a Mooney viscometer and avoids huge labor and material resources required by a traditional Mooney viscometer measurement method.

The invention discloses a movement detecting method, comprising the steps as follow: the first step, the picture of a reference frame is determined and the pictures of a current frame is determined; the second step, a monitoring area is divided into a plurality of sub-areas, and the corresponding valve value and the weight are respectively set for each monitoring sub-area according to the sensitivity of each monitoring sub-area; the third step, the movement information of the current frame and the reference frame inside each sub-area are acquired; and the fourth step, the movement detection inside the whole monitoring area is determined according to the movement detecting result of each sub-area, the weight of each sub-area and the valve value of the whole monitoring area. As the invention is added with the weight information, all the sub-areas are combined organically, thereby ensuring the movement detecting result of the whole monitoring area more accurate and reliable.

The invention discloses a method for old man falling-down detection based on an attractor propagation algorithm. The method comprises a step 1) of collecting sample information of each sensor; a step 2) of processing the sample information and performing normalization, and constructing a sample state weighted sum; a step 3) of inputting the sample state weighted sum into an AP cluster; a step 4) of utilizing clustering results to construct a balanced binary tree, and marking the clustering results; a step 5) of collecting information of each sensor; a step 6) of processing the sensor information and performing normalization, and constructing a state weighted sum; a step 7) of searching the balanced binary tree according to a weighted sum result, and outputting a predicted result. According to the method, through the AP cluster implemented through the attractor propagation algorithm and the balanced binary tree constructed through the state weighted sum, the old man falling-down detection accuracy rate is effectively improved, and thus the problem that an existing falling-down detection method is not high in accuracy rate and large misjudgment occurs is solved.

The invention provides a foreign matter inspection system for rail transit. The method is used for detecting a border crossing event on a railway and judging whether foreign matters cross the border or not. The system is characterized in that the system comprises at least one induction camera device which is used for shooting the position where the border-crossing event occurs on the railway to obtain a border-crossing video image when the border-crossing event occurs is inducted, and a plurality of clearer video frames in the border-crossing video image are used as a group of event video frames to be sent to an image processing device. The system also comprises an image processing apparatus, wherein the image processing module is used for performing image processing on an event video frame to obtain corresponding border crossing event information and sending the border crossing event information to security personnel responsible for railway maintenance; the image processing apparatusincludes an image-side communication unit, an image-side control unit, a video frame processing unit, a video frame temporary storage unit, an image analysis and generation unit, a foreign matter determination unit, and an event information acquisition unit.

The invention discloses a black smoke vehicle detection method based on a self-organizing background difference model and a multi-feature fusion, which comprises the following steps: detecting a moving object from a video surveillance by using the self-organizing background difference model, and determining a key area; transforming the key region image into YCrCb color space and extracting the color moment feature; transforming the key regions into gray space, and extracting the local ternary mode histogram and edge direction histogram; according to the position of the key region of the current frame, extracting the corresponding regions of several frames from the whole frame sequence, concatenating the same features extracted from all the temporal regions to form the feature vectors of each class, and normalizing the feature vectors of each class to form the final feature vectors; classifying the final eigenvectors by using the pruned radial basis function neural network classifier; identifying the key areas of smoke and further identifying the smoky vehicles. The invention can further improve the identification rate, reduce the false alarm rate, and has good identification effecton smoky vehicles with relatively light black smoke.

The invention provides a high-reliability socks knitting machine. A broken yarn detection sensor is additionally arranged; the device can be used for reasonably distributing yarns and the detection sensitivity is guaranteed; the high-reliability socks knitting machine is compact in structure, and a broken needle detection device has relatively high sensitivity, can be used for detecting a broken needle phenomenon without axial movement and can automatically quit when detection is not needed; a limited socks knitting working region does not need to be excessively occupied, and broken needle and broken yarn phenomena are effectively detected, so that the reliability of the socks knitting machine is improved, the generation of defective products is reduced and the production cost is reduced; meanwhile, the high-reliability socks knitting machine is relatively simple to design, mount and debug, and is relatively high in stability and reliability. The high-reliability socks knitting machine comprises a yarn feeding mechanism for supplying yarns to a knitting mechanism, and a control mechanism for controlling the knitting mechanism, wherein the yarn feeding mechanism comprises a yarn rack, a plurality of supporting plates which are arranged on the yarn rack, are used for storing a bobbin seat and are sequentially distributed from bottom to top, a sensor set arranged above the supporting plate on the uppermost layer, and a yarn guide rod arranged above the sensor group; and the knitting mechanism is provided with the broken needle detection device.

The invention discloses a driver display unit of an electric locomotive, comprising a 110V direct-current power module, a main processing unit, a resistance type touch display unit, a storage unit, a bus interface and an MVB (Multifunction Vehicle Bus) communication unit adopting a PC104 bus. The MVB communication unit comprises a bus controller FPGA (Field Programmable Gate Array), a real-time protocol and bus manager, a random access memory, a FLASH storage and a download management unit. The driver display unit has the advantages that the data exchange between the driver display unit and a locomotive TCN (Train Communication Network) is realized, the direct access into a TCMS (Train Control Management System) network is achieved, and the processing links of other equipment are reduced.

The invention relates to a protection method and a protection device of wild monitoring equipment, and belongs to the field of a protection technology of wild monitoring intelligent equipment. The technical scheme is that wild intelligent equipment (3) is matched in a protection well (1), the protection well is integrally or partially embedded below the ground (13), the protection well cover (2) is matched at the upper part of the protection well, and a monitor (4) is arranged in a protection well cover; when the protection well cover moves, the monitor is used for transmitting a signal to the wild intelligent equipment through a wireless radio frequency network, and transmitting alarm information to a management department through a remote communication module if a signal that a worker takes identification equipment is not detected. According to the protection method and the protection device provided by the invention, the status of protection equipment can be monitored remotely by the remote communication capacity of the wild intelligent equipment, therefore the reliability of the wild monitoring system can be improved greatly, and the personnel and traffic costs caused by wild patrol inspection can be saved; in addition, the possibility of misinformation can be reduced, and the credibility of the system can be improved because a worker takes the identification equipment to operate.

The application discloses a motor locked-rotor fault judgement method. The motor locked-rotor fault judgement method comprises the following steps: starting to time when an output torque of a motor is detected to reach a maximum output torque; if a timing time length is determined to be in a process of reaching a first preset time length, keeping the output torque of the motor to be the maximum output torque, when the timing time length is the first timing time length, controlling the motor to reduce the output torque to a target output torque, and re-timing; if the timing time length is determined to be in a process of reaching a second preset time length, keeping the output torque of the motor to be the target output torque, when the timing time length is the second timing time length, determining a locked-rotor fault exists in the motor, and reporting locked-rotor fault information. According to the motor locked-rotor fault judgement method, the over-temperature damage to an IGBT of a motor controller is reduced under a locked-rotor working condition of the motor; meanwhile, the misinformation possibility of the locked-rotor fault is reduced. The application also discloses a motor controller and a new energy automobile based on the motor locked-rotor fault judgement method.

The invention provides a method and system for detecting psychological abnormalities based on multi-channel collaboration, and relates to the field of computer data processing. The method comprises the following steps that subjective feedback data and objective response data of a to-be-detected object are acquired; the objective response data is processed; based on the subjective feedback data andthe processed objective response data, psychological state data is obtained, wherein the psychological state data comprises total psychological state data of the population and multi-day historical psychological state data of the to-be-detected object; based on a pre-constructed multivariate Gaussian distribution model, the psychological state data is processed separately, and two probabilities are obtained; based on the two probabilities, the psychological abnormality degree and individual historical psychological abnormality degree of the to-be-detected object in the population are acquiredseparately; based on the two abnormality degrees, whether or not the to-be-detected object is in a psychological abnormality state is determined. The method and system can accurately detect whether or not people are in psychological abnormality states.

The invention discloses detection equipment for road construction, and the equipment comprises a detection host, one side of the detection host is symmetrically provided with two longitudinal detection grooves, each longitudinal detection groove is internally provided with a fixed shaft, each fixed shaft is rotatably provided with a detection arm, each fixed shaft is rotatably provided with a longitudinal feedback device, each longitudinal detection groove is internally and symmetrically provided with two arc-shaped resistance rods, and each longitudinal feedback device is slidably arranged on the two corresponding arc-shaped resistance rods in a sleeving mode. The transverse flatness of the road surface is synchronously detected through the detection rod in the transverse detection plate and the transverse feedback device, the height difference between the transverse detection plate and the detection host is detected through the detection arm and the longitudinal feedback device for longitudinal flatness detection, comprehensive flatness detection of the regional road surface is achieved, the detection speed is higher, the detection result is more accurate, is not interfered by the ground flatness, and is more reliable.

The application relates to a reagent needle liquid taking process control method and system for a medical instrument. The method comprises the steps: enabling a reagent needle to operate downwards from an initial position so as to suck a reagent, dividing the reagent sucking process into four stages, and enabling a process that the reagent needle sucks a reagent and then operates upwards to the initial position to be divided into two stages; setting an operation mode and operation time of the reagent needle at each stage; setting the operation mode, the operation time and the operation speed of the reagent needle at each stage; and according to the set operation mode, operation speed and operation time, controlling the reagent needle to finish operation at stages within the preset time. According to the invention, the operation time of the reagent needle is greatly saved, and the problems of overlong operation time, liquid hanging and inaccurate liquid level detection of the reagent needle in the prior art are solved.

The invention discloses a method for separating and identifying bitter polypeptide in yellow rice wine, and belongs to the technical field of food. After electronic tongue determination is combined with ethanol precipitation, n-butyl alcohol extraction, C18SPE solid-phase extraction and semi-preparative HPLC separation, the bitter polypeptide in the yellow rice wine is analyzed, identified and separated by combining amino acid component analysis, UPLC-ESI-Q-TOF-MS / MS, pyroglutamate peptidase digested polypeptide and mass spectrum software, and finally, the polypeptide Pyr-LFNPSTNPWHSP with bitterness is identified from the yellow rice wine. According to the method, multiple methods are combined to separate and identify the bitter polypeptide in the yellow rice wine, pyroglutamic acid peptidase digestion verifies that the polypeptide is the bitter polypeptide containing pyroglutamic acid, and a theoretical basis is provided for research of a mechanical yellow rice wine bitter taste reducing technology; and through pyroglutamate peptidase digestion verification and other identification methods, the false positive possibility of determining the polypeptide sequence only by a mass spectrometry MS / MS method can be effectively reduced.

The invention relates to the technical field of fire fighting equipment, in particular to a fire fighting and fire extinguishing system. The fire fighting and fire extinguishing system comprises a storage bottle, an alarm apparatus, a baffle, a wax sealing block, a drawing rope and a reversing wheel, wherein an opening of the storage bottle faces the ground, the baffle is hinged to the storage bottle, the free end of the baffle can rotate around a hinging shaft under the effect of gravity, the wax sealing block is laid on the ground and can be molten at the predetermined temperature, one end of the drawing rope and the free end of the baffle are assembled together, the other end of the drawing rope is fixed by the wax sealing block, and the reversing wheel is used for the drawing rope to rotate around for reversing. When a fire breaks out, the temperature of the ignition point rises, the wax sealing block is molten, thus the drawing rope is loosened, at this moment, the baffle rotatesaround the hinging shaft under the effect of its own gravity, then the opening of the storage bottle is opened, and the alarm apparatus is started, so that a fire extinguishing agent in the storage bottle is released to carry out fire extinction motions, and the start of the alarm apparatus can warn the staff of the fire. Compared with smoke alarm apparatuses in the prior art, the fire fighting and fire extinguishing system controls the start of the alarm apparatus and the opening of the storage bottle through the melt of the wax sealing block, and the possibility of false alarming is lowered.

The invention discloses an arc light protection device which comprises an arc light probe which is used for collecting arc light generated during short circuit discharge of a bus joint and further exciting the arc light to be fluorescence for outputting, or used for detecting visible light generated by ambient light leakage and outputting the visible light; an optical fiber which is connected withthe arc light probe through a connector and is used for transmitting the fluorescence or visible light output by the arc light probe, and a control terminal which is communicated with the optical fiber through the connector, and the fluorescent light and / or the visible light transmitted by the optical fiber is input into the control terminal, When the control terminal identifies that fluorescentlight and / or the visible light is caused by short circuit discharge of the bus joint or by ambient light leakage, a power supply protection bus is cut off or an alarm signal of a protection system fault is sent respectively. The device provided by the invention has all functions of a traditional arc light protection system, and all advantages of a traditional device are maintained. The stability of the arc light protection device is improved, so that the arc light protection device is more suitable for a power system.

The invention discloses a glass breaking alarm reminding device, and relates to the field of vehicle anti-theft alarm. The device comprises a resistance wire, a signal acquisition module, a controller, an alarm device and a server, wherein the resistance wire is used for being arranged on a surface of glass and includes two leading-out ends; the signal acquisition module includes a detection circuit and a conversion circuit; the detection circuit is configured to enable one leading-out end of the resistance wire to be grounded and enable the other leading-out end of the resistance wire to be connected with a detection power supply through a pull-up resistor, and the conversion circuit is used for converting a high-level signal or a low-level signal output by the detection circuit and outputting a glass breaking signal when the detection circuit outputs the high-level signal; the controller is connected with the conversion circuit and is used for receiving and sending the glass breakingsignal; the alarm device is connected with the conversion circuit and is used for giving an alarm when receiving the glass breaking signal; and the server is wirelessly connected with the controllerand is used for outputting reminding information when receiving the glass breaking signal. In the invention, a sensor does not need to be arranged on glass, and a possibility of false alarm can be reduced.

The invention provides an electronic fence alarm device. The electronic fence alarm device comprises a fence base, an alarm and a control device, wherein the upper end of the fence base is provided with two support rods, pulse transmission lines are transversely connected between the two support rods, a plurality of middle rods are evenly arranged between the two support rods, a fixing rod is arranged at a middle position between the two support rods, the control device is connected signal transmitters, the signal transmitters are connected with the pulse transmission lines, the pulse transmission lines penetrate the support rods, the middle rods and the fixing rod, two rotary line tighteners are mounted on each pulse transmission line and are close to the support rods, and each rotary line tightener is provided with a pressure sensor; the alarm is arranged at the top of the fixing rod and connected with the same through an alarm support column; a plurality of visible laser probes and invisible laser probes are arranged on the surface of the alarm. The electronic fence alarm device is firm in connection, high in safety and capable of effectively lowering false alarm probability.

The invention discloses a PMA-dual ddPCR-based quantitative detection method for vibrio parahaemolyticus, and belongs to the technical field of food safety detection. According to the method, a specific primer and a probe are designed and verified by taking a vibrio parahaemolyticus self-screening specific new target VP0488 and a traditional target TLH as target fragments. Meanwhile, in order to ensure the specificity and sensitivity of the method and optimize dual ddPCR amplification conditions, a reaction system and PMA treatment conditions, a PMA-dual ddPCR method for quantitatively detecting viable vibrio parahaemolyticus is established. Results show that the sensitivity of the method is higher than that of dual real-time fluorescent quantitative PCR (qPCR), and the method has the advantages of being high in specificity and good in accuracy, and has practical application value in the aspect of food safety detection.

The invention provides a high-reliability needle breakage detection device. The high-reliability needle breakage detection device has the characteristics that a needle breakage phenomenon can be detected without needling axial movement, automatic exit can be realized when detection is not needed, the sensitivity is higher, the limited working area of a hosiery machine is not excessively occupied, yarns are not easily enwound, the problems such as yarn breakage are avoided, the design, installation and debugging are simpler, and the stability and reliability are higher. The high-reliability needle breakage detection device comprises an installation seat fixedly connected with the hosiery machine, wherein the installation seat is slidably connected with a slider, the slider is driven by a driving device to slide, a detection element is further arranged on the slider, the detection element comprises a conducting tube and a conducting rod with one end inserted into the conducting tube and the other end suspended outside the conducting tube, the conducting rod is provided with a first conducting part which can contact with the conducting tube to realize conduction when the conducting rod swings, the conducting tube and the slider are mutually insulated, and the conducting tube and the first conducting part are respectively and electrically connected with a hosiery machine controller.

The invention discloses a remote sensing image change detection method combining posterior probability and spatial neighborhood information. The method comprises the following steps: acquiring a training sample and a change intensity image of each land cover type by using a dual-temporal remote sensing image, and calculating the posterior probability of the change intensity of the land cover type; and considering spatial neighborhood information, calculating a posterior probability, and constructing a spatial curved surface of the land cover type-spatial neighborhood information; and adaptively determining a threshold value for each pixel according to the spatial curved surface, and obtaining a change detection result image. For multi-temporal remote sensing image change detection research, farmland pseudo changes can be effectively reduced, a change area with a low gray value in a change intensity image is identified, and the possibility of missing report and false report is reduced to the greatest extent.

The invention relates to the technical field of traffic data processing, in particular to an urban regional traffic big data analysis system based on a positioning system. The system comprises: a positioning system which is fixed relative to the position of the user terminal, is used for collecting first positioning information of a user and sending the first positioning information to the user terminal, is arranged at a specific intersection and is used for collecting a vehicle driving image; a vehicle-mounted acquisition module which is fixed relative to the position of the user terminal and is used for acquiring a first environment image in the vehicle driving process when the acceleration of the positioning system exceeds a threshold value; and a big data analysis module which is used for reading the first positioning information corresponding to the first environment image and judging whether the first environment image is associated with the vehicle driving image or not according to the travel speed and the acceleration. By adopting the technical scheme of the invention, the problems of single data source and misinformation of partial data can be solved.

The invention relates to a quality online monitoring method based on a dye cloth printing and dyeing process. The method comprises the following steps of connecting an upper cloth machine, a printingand dyeing system, an automatic sampling system and a quality inspection system on a dye cloth printing and dyeing production line; carrying out automatic sample collection on the current batch of dyecloth in the printing and dyeing system by the automatic sampling system, and sending to the quality inspection system to obtain a required quality parameter Xnew, and then, transmitting the qualityparameter Xnew to a dye cloth printing and dyeing quality online monitoring model F; according to F:x to y, outputting a printing and dyeing quality value y; transmitting dye cloth quality ynew to thequality inspection system, and comparing the dye cloth quality ynew with the preset dye cloth quality value Y in the quality inspection system, which is convenient for the subsequent batch of dye cloth printing and dyeing production line to carry out corresponding adjustment; and detecting whether the dye cloth printing and dyeing production line has a new production task, if there is the new production task, re-executing a step S2, and if there is no new production task, finishing processes. Real-time and accurate monitoring can be realized, a monitoring result is accurate, and cost is low.

The invention provides a sock machine with full-course needle breakage detection, wherein during weaving of sock legs, a first detector carries out detection, a second detector detects needle breakage when at the woven kneel part, both the woven legs and the woven heel can detect the needle breakage during production, defective rate is effectively reduced, production quality is improved, and the reliability and safety are high; the sock machine also comprises a first detecting device and a second detecting device, the first detecting device comprises a mounting frame, a slider is slidably connected with the mounting frame, the slider is driven by the driving device to slide and is provided with a detecting element, the detecting element comprises a conductive tube and a conducting rod, the conducting rod can contact the conductive tube when swinging, a needle raiser is connected with the second detecting device, and the second detecting device comprises a sensing protrusion, and a sensor is arranged below the sensing protrusion.

The embodiment of the invention discloses a monitoring and control system for a safety production environment. The system comprises a programmable logic controller, a detector and an alarm device, wherein the programmable logic controller is used for controlling the alarm device to give an alarm when the input signal of the detector is detected; the detector at least comprises a smoke detector anda flame detector; and the input signal of the detector at least comprises the signal of the smoke detector and the signal of the flame detector. The flame detector is added by aiming at the incomplete reliability of the smoke detector, after the programmable logic controller simultaneously receives the input signals of the smoke detector and the flame detector, the alarm is given through the alarm device, and therefore, the possibility of a 'false alarm' is greatly reduced.

The invention discloses an arc light protection device which comprises an arc light probe which is used for collecting arc light generated during short circuit discharge of a bus joint and further exciting the arc light to be fluorescence for outputting, or used for detecting visible light generated by ambient light leakage and outputting the visible light; an optical fiber which is connected withthe arc light probe through a connector and is used for transmitting the fluorescence or visible light output by the arc light probe, and a control terminal which is communicated with the optical fiber through the connector, and the fluorescent light and / or the visible light transmitted by the optical fiber is input into the control terminal, When the control terminal identifies that fluorescentlight and / or the visible light is caused by short circuit discharge of the bus joint or by ambient light leakage, a power supply protection bus is cut off or an alarm signal of a protection system fault is sent respectively. The device provided by the invention has all functions of a traditional arc light protection system, and all advantages of a traditional device are maintained. The stability of the arc light protection device is improved, so that the arc light protection device is more suitable for a power system.

The invention provides electronic equipment and belongs to the technical field of electronics. A shell and a cover body are provided with N first screw holes and second screw holes which correspond toeach other; each signal detection pin of a control module of electronic equipment is electrically connected with each first screw hole, and when the cover body is connected with the shell through a conductive screw penetrating through each second screw hole and each first screw hole, the second screw hole transmits a specific electric signal to the corresponding first screw hole through the corresponding conductive screw. The appearing sequence of target first screw holes in the shell is monitored and judged through the control module and a preset screw hole sequence. When the sequence does not match the preset screw hole sequence, abuzzer is triggered to output an alarm signa. The technical effect of outputting the alarm signal when the conductive screw for connecting the cover body andthe shell is not disassembled according to the preset screw hole sequence can be achieved, and compared with a traditional disassembling early warning function, the reliability of disassembling earlywarning can be effectively improved through the electronic equipment.