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384 results about "No detection" patented technology
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System and method for minimizing power consumption for an object sensor
A system and method is disclosed for minimizing power consumption of a sensor unit that is capable of detecting an object. Main circuitry operates the sensor unit in a high power mode of operation when the sensor unit detects an object. Low power control circuitry operates the sensor unit in a low power mode of operation when the sensor unit does not detect an object within a pre-determined period of time. The low power control circuitry also comprises a counter to periodically determine when to restore the sensor unit to a high power mode of operation. One advantageous embodiment of the sensor unit is a fingerprint sensor unit for detecting a finger to obtain fingerprint information.
Owner:SYNAPTICS INC +1
Internet robot detection for network distributable markup
InactiveUS20080301808A1Memory loss protectionError detection/correctionThe InternetBiological activation
Embodiments of the present invention provide a method, system and computer program product for bot detection for network distributable markup. In accordance with an embodiment of the present invention, a page request for distributed markup can be processed to incorporate embedded fragment within the requested page. For instance, the fragment can include a script enabled to detect human activity within the requested page such as a mouse movement. Alternatively, the fragment can include an extraneous markup artifact. The requested page subsequently can be returned to the requestor and the embedded fragment can be monitored to detect the presence of a bot depending upon the activation of the artifact. For example, where human activity can be detected within the page or where the extraneous markup artifact becomes activated despite the extraneous nature of the artifact, a human requestor can be concluded. However, where no human activity is detected in the requested page, or where the extraneous markup artifact remains unactivated, a bot requestor can be determined.
Owner:IBM CORP
Diagnostic circuit and diagnostic method for detecting electric vehicle high-voltage relay fault
ActiveCN105137336AThe method is simple and feasibleReduce detection riskCircuit interrupters testingElectrical resistance and conductanceElectrical devices
The invention discloses a diagnostic circuit and a diagnostic method for detecting electric vehicle high-voltage relay fault. The circuit comprises a battery pack for providing power and a driving force for the electric vehicle and a controller for controlling on and off of an electric vehicle switch element. Two ends of the battery pack are connected with an overall electrical device; a main positive relay K+ is serially connected between the positive electrode of the battery pack and the overall electrical device; two ends of the main positive relay K+ are parallelly connected with a relay R and a pre-charging relay Kp; a main negative relay K- is serially connected between the negative electrode of the battery pack and the overall electrical device; both the battery pack and the overall electrical device are respectively connected with the controller; the controller is used for detecting voltage at two ends of the battery pack, voltage at two ends of the overall electrical device, and voltage at the negative end of the battery pack and the positive end of the overall electrical device. Thus, no peripheral circuit needs to be added, the state of the relay is judged only through carrying out cross detection on voltage at the relay end, whether the relay has a fault can be timely detected, remedial measures can be taken timely, the method is simple, convenient and feasible, and no detection risk is added.
Owner:江苏博沃汽车电子系统有限公司
Wireless inductive power transfer
ActiveUS20170018977A1Reduce riskEasy to operateCircuit arrangementsElectric power transmissionTransfer mode
A wireless power transfer system includes a power transmitter (101) providing power to a power receiver (105) via an inductive power signal. The power transmitter (101) and receiver (105) can operate in different modes including a test mode and a power transfer mode. Operating parameters of the power receiver (105) are constrained in the test mode relative (and specifically the loading). A foreign object detector (209) generates a foreign object detection estimate from a comparison of a measured load to an expected load of the inductive power signal when the power receiver is operating in the test mode. A controller (211) enters the power transmitter (101) and receiver (103) into the power transfer mode when the foreign object detection estimate is indicative of no detection of a foreign object. In the power transfer mode, a parasitic power loss detector (207) generates a parasitic power loss detection for the power transfer if a parasitic power loss estimate is outside a range.
Owner:KONINKLJIJKE PHILIPS NV
Security service robot and intelligent obstacle avoidance method of robot in complex environment
InactiveCN105676845AImprove handlingFlexible movementPosition/course control in two dimensionsRadarEngineering
The invention discloses an intelligent security service robot complex environment obstacle avoidance method and a security service robot. The method includes: S1: laser obstacle avoidance; The distance between the robot body and obstacles is marked as the coordinates on the map; S2: Ultrasonic obstacle avoidance; in the case that no obstacle is detected by the laser radar method, rely on the ultrasonic sensing method to assist in detecting obstacles and distance information, and realize obstacle avoidance ;S3: Infrared obstacle avoidance; if the infrared sensor detects that the distance between the chassis and the ground exceeds the preset threshold during the robot’s movement, it will avoid obstacles; S4: Collision obstacle avoidance; way to avoid obstacles. The above-mentioned obstacle avoidance method is implemented on the robot. The invention has the advantages of good controllability, more flexible movement, stable and reliable system performance, high obstacle avoidance precision and the like.
Owner:NAT UNIV OF DEFENSE TECH
Photovoltaic grid connected inverter island detection method based on negative sequence current injection
ActiveCN103412207AReduce the difficulty of settingReduce distractionsElectrical testingSingle network parallel feeding arrangementsAutomatic controlTotal harmonic distortion
The invention provides a photovoltaic grid connected inverter island detection method based on negative sequence current injection, belonging to the technical field of power system relay protection and automatic control. According to the method, an inverter is started to inject negative sequence current when a voltage harmonic distortion rate is larger than a fixed value, common connection point voltage unbalanced degree and voltage harmonic distortion rate are detected, when both the common connection point voltage unbalanced degree and the voltage harmonic distortion rate are larger than the respective fixed value and the duration time exceeds a set time, the generation of island is determined, and the rapid detection of the island is realized. According to the method, the setting difficulty of a criterion is reduced, the improvement of the detection speed is facilitated, the interference on a power grid is reduced as much as possible in the condition that the normal operation is ensured, the influence of a power grid asymmetrical fault is avoided, and there is no detection blind area. The simulation verification is carried out in the condition that the island detection is most not facilitated, and an island operation state still can be rapidly and accurately detected according to the method. A good method is provided for the operation withdrawal of a distributed power supply in the island or the turning of power grid connected operation into island operation control mode power system safe operation and the detection.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)
LED retrofit lamp
ActiveUS9480123B2Safety is ensuredImprove securityElectric discharge tubesElectroluminescent light sourcesAlternating currentLED lamp
The present invention relates to an LED retrofit lamp adapted for operation with an alternating current. The LED lamp comprises an LED unit, first and second switching devices (e.g., first and second relays), a startup voltage supply unit (1010) coupled in parallel to the first switching device, an ignition detection unit (1020) coupled in parallel to the second switching device, and a switch drive unit (1030) for setting the first and second switching devices to a conducting state. If one of the first and second switching devices is shorted either no startup supply voltage or no detection signal is provided, such that the failure is indicated externally to a user.
Owner:SIGNIFY HLDG BV
Method and Apparatus for Controlling Laser Transmissions for Enhanced Safety
ActiveUS20120242974A1Improve security levelEfficient detectionOptical rangefindersElectromagnetic wave reradiationOptoelectronicsSelf adaptive
According to a present invention embodiment, safety is enhanced for a non-eye-safe limited-range laser sensing system. The laser sensing system typically has an operating range limited to a well-defined spatial interval. A range measurement is utilized to control emissions of the non-eye-safe laser. In particular, when the range to a target is outside the designed spatial interval defining the operating range of the laser sensing system, transmission of the non-eye-safe laser beam is disabled or rendered non-hazardous. In other words, the transmission of the non-eye-safe laser beam is disabled in response to no detection of a hard target within the operating range of the laser sensing system, or when an object is detected between the laser sensing system and the spatial interval that defines the operating range. The target distance may be tracked to change the location (and possibly, width) of the adaptive spatial interval defining the operating range.
Owner:PERATON INC
Method of processing user information inputted through touch screen panel of digital mobile station
InactiveUS7031756B1Environment is restrictiveCathode-ray tube indicatorsSubstation equipmentTime segmentMobile station
Disclosed is a method of inputting and processing a variety of user information for a digital mobile station including a touch screen panel and a control module for processing touch screen panel data generated from the touch screen panel comprising the steps of: (a) continuously counting a predetermined time period interval in response to a written memo input mode; (b) detecting touch screen panel data generated from the touch screen panel corresponding to the continuous counting of the predetermined time period, producing and storing an associated written memo corresponding to the detected touch screen panel data; and, (c) determining whether there is detection of another touch screen panel data generated according to the continuous counting operation for the predetermined time period after the lapse of a certain period of time if there is no detection of the touch screen panel data for the predetermined period of time, storing detected another touch screen panel data if it is determined that there is detection of another touch screen panel data, and then repeating step (a).
Owner:SAMSUNG ELECTRONICS CO LTD
Controller device of traffic signal equipment
InactiveUS20060217874A1Avoid wastingAvoid startingControlling traffic signalsAnalogue computers for vehiclesCross inhibitionTraffic signal
A controller device, after switching a traffic signal displayed on traffic signal equipment from a cross inhibition signal to a non cross inhibition signal, makes the traffic signal equipment display the non cross inhibition signal during a second time period before a second set time passes after a first time period ends to switch from the non cross inhibition signal to the cross inhibition signal responding to end of the second time period, if a detection signal indicating a target person of extension is received from a traverser detecting device during the first time period before a first set time passes after switching from the cross inhibition signal to the non cross inhibition signal. If no detection signal is received during the first time period, the controller device switches from the non cross inhibition signal to the cross inhibition signal responding to end of the first time period.
Owner:FUJITSU LTD
Packet receiving apparatus and packet transmission method
ActiveUS7266118B2Accurate receptionData taking preventionTime-division multiplexComputer sciencePacket transmission
Owner:INVT SPE LLC
Card reader
ActiveUS20050116036A1Easily and accurately determinedAccurately warnedConveying record carriersDigital recordingNo detectionMagnetic stripe card
A card reader that transports a card having a magnetic strip with a drive means to read and write information on the card that includes prehead for detecting the insertion of the card by searching the presence of the magnetic information recorded on the magnetic strip, and a card detecting switch for detecting the card. When the card detecting switch determines that a card is present, the prehead searches the magnetic information. When the card detecting switch does not detect a card, the card is distinguished as a specially-shaped card.
Owner:SANKYO SEIKI MFG CO LTD
Optics detecting device
InactiveCN102072708AConvenient detection workEasily Construct Spatial Straight Line EquationsAngle measurementUsing optical meansTransverse axisLight beam
Owner:深圳市华盼科技有限公司
Grass type unbleached paper products and production method thereof
Provided is an unbleached paper product made from grass type pulp, the unbleached paper product has a brightness of 35-60% ISO, the grass type pulp is unbleached. The unbleached paper product includes an unbleached toilet paper, an unbleached hand towel, an unbleached wiping paper, an unbleached duplicating paper, an unbleached meal container, an unbleached food wrapping paper and an unbleached printing paper. The paper products have a high intensity and have no detection of dioxin and absorbable organic halides in the harmful substance detection test.
Owner:SHANDONG FUYIN PAPER & ENVIRONMENTAL PROTECTION TECH
Method for controlling irrigation according to crop water shortage degree and device thereof
InactiveCN101790955AReduce power consumptionFew detection parametersMaterial analysis using sonic/ultrasonic/infrasonic wavesClimate change adaptationNo detectionTransition time
The invention relates to a method for controlling irrigation according to crop water shortage degree and a device thereof. The method comprises the following steps of: determining a detection time window according to an illumination threshold and an illumination integral threshold; after entering the detection time window, simultaneously emitting ultrasonic waves to ultrasonic reflecting boards which are arranged in right front at equal intervals respectively from the positions approximately above the reference crop and the detection crop and parallel to the planes of the respective crops below at preset time intervals; when receiving the respective reflected ultrasonic waves, respectively starting and stopping the same counter; comparing the counting value with the counting threshold set according to the crop water shortage index in the ultrasonic transition time; and if the counting value is smaller than the counting threshold, the crop water shortage degree requires irrigation, then starting irrigation. The invention has the advantages of fewer detection parameters, no complicated calculation, no detection individual difference, non-contact measurement, and high economy and practicality.
Owner:FARMLAND IRRIGATION RES INST CHINESE ACAD OF AGRI SCI
Multi-target tracking method and corresponding video analysis system
InactiveCN110751674AReduce computing requirementsGuaranteed Tracking AccuracyImage enhancementImage analysisPattern recognitionMulti target tracking
The invention discloses a multi-target tracking method and a corresponding video analysis system for implementing the scheme. The method comprises the following steps: acquiring detection position information of a target; obtaining predicted position information of the target; matching the obtained prediction position information with the detection position information; updating the state information of the target based on the detection position of the target under the condition that the detection position information of the target is judged to be matched with the prediction position information of the target; under the condition that it is judged that the prediction position of a certain target has no detection position matched with the prediction position, judging that the target is an extinction target; and judging that the target is a new target or a reappeared target under the condition of judging that the detection position of a certain target is not matched with the detection position of the target. Therefore, through reasonable allocation of the functional modules, high tracking precision requirements can be met while low-computing-power high-speed tracking is realized.
Owner:XILINX TECH BEIJING LTD
Method and device for real-time analysis of traffic signal phase
ActiveCN102779415AExempt fundsShorten the timeControlling traffic signalsTraffic signalReal time analysis
The embodiment of the invention discloses a method and a device for real-time analysis of a traffic signal phase, relating to the field of an intelligent traffic system. The traffic signal phase on a road chain can be analyzed according to floating vehicle data, no detection device is needed, the capital and the labor time required for installation and maintenance of the detection device can be omitted, and thus the cost can be reduced. The method comprises: obtaining floating vehicle data of a designated signal crossing intersection; obtaining running information of vehicles at the signal crossing intersection according to the floating vehicle data, wherein the running information comprises the distances between stop points of the vehicles and traffic lights at the signal crossing intersection and / or the start and stop time of the vehicles; and obtaining phases of the traffic lights at the signal crossing intersection according to the running information. The method is suitable for analysis and acquisition of the traffic signal phase.
Owner:CENNAVI TECH
Servo motor control apparatus and control method
ActiveUS20100052593A1Narrow frequency band widthAvoid uneven performanceProgramme controlElectric motor controlMotor controlEngineering
A servo motor control apparatus having a feedback loop includes: an oscillation detecting section, which detects oscillation of the feedback loop, to output an oscillation detection signal; a parameter operating section, which gives an operational instruction to set a control parameter in the feedback loop based upon the oscillation detection signal; and an updating section, which is supplied with a set value for setting a control parameter, and sets the control parameter in the feedback loop while making an update thereon in accordance with the operational instruction given by the parameter operating section, wherein when the oscillation detection signal indicates no detection of oscillation, the parameter operating section gives the updating section an operational instruction to set a control parameter in accordance with the supplied set value, and when the oscillation detection signal indicates detection of oscillation, parameter operating section gives the updating section an operational instruction to set such a control parameter as to narrow a frequency band width of the feedback loop.
Owner:PANASONIC CORP
Bridge detection unmanned aerial vehicle path planning method
ActiveCN107450576AReduce manpowerReduce material resourcesAttitude controlPosition/course control in three dimensionsBlind zoneDecomposition
The invention discloses a bridge detection unmanned aerial vehicle path planning method, which belongs to the technical field of unmanned aerial vehicle path planning. The method comprises the steps that using the method of flying along the edge is used to acquire the contour information of a bridge; grid-based environment model construction is carried out; target area decomposition is carried out; adjacent sub-area convergence is carried out; sub-area optimal path traversal is carried out; and all standing traversal of the bridge bottom is carried out. According to the invention, the algorithm has the advantages of low repetition rate, high coverage rate, no detection blind zone theoretically; the algorithm is simple and easy to implement; and the algorithm can better complete the task of all standing traversal path planning of an unmanned aerial vehicle on the bottom of the bridge.
Owner:HARBIN ENG UNIV
Island detection method based on combination of phase mutation and active frequency drift
InactiveCN103983898AChecked out smoothlyFast and effective detection functionFault locationIslandingPower flow
The invention discloses an island detection method based on the combination of phase mutation and active frequency drift, and belongs to the field of anti-islanding protection of large-scale new energy centralized grid connection. The island detection method based on the combination of phase mutation and active frequency drift comprises the steps that (1) the phase difference delta phi between grid connection output current of an inverter and voltage of a public coupling point and the frequency f of the voltage of the public coupling point are detected; (2) whether the delta phi is larger than phi is judged, if yes, the step (5) is executed, and if not, the step (1) is executed again; whether the f is smaller than fmin or larger than fmax is judged, if yes, the step (5) is executed, and if not, the step (3) is executed; (3) frequency disturbance is added to the grid connection output current of the inverter through the active frequency drift technology in every period, and the frequency f' of the voltage of the public coupling point is detected; (4) whether the f' is larger than the fmax is judged, if yes, the step (5) is executed, and if not, the step (1) is executed again; (5) an island protection action is adopted. The island detection method based on the combination of phase mutation and active frequency drift resolves the problem that a single passive detection method fails under the condition of a resistance-similar load, has no detection blind area, and can effectively detect an island.
Owner:STATE GRID NINGXIA ELECTRIC POWER +1
Hand-dryer
Owner:FFUUSS 2013
Abnormal condition detection apparatus
ActiveUS20090009178A1Reduce data volumeReduce manufacturing costBatteries circuit arrangementsCurrent/voltage measurementSignal onNo detection
A plurality of result signals are driven low when abnormal condition is detected and driven high when no abnormal condition is detected. Presence and absence of the abnormal conditions of different types are indicated in a predetermined sequence by high and low signal levels of the result signals. The voltage detecting circuits simultaneously output the result signals on corresponding branching lines connected to a main line of a communication line. An OR gate outputs a result signal on which the result signals output by the voltage detecting circuits are superimposed. When at least one of the result signals of the voltage detecting circuits is at a level indicative of the presence of the abnormal condition, the OR gate outputs on the main line the result signal having the level indicative of the abnormal condition.
Owner:YAZAKI CORP
Method and device for monitoring moving objects
InactiveUS20120256096A1Simple and cost-efficient to realizeHighly reliable monitoringInvestigating moving fluids/granular solidsOptical detectionLight beamClassical mechanics
A method and a device for monitoring objects moving along a trajectory. The objects include a section that is transparent or translucent. The objects subsequently cross a light beam at the section. The presence or absence of an object is determined during a transitional time period during which substantially no light or light within a wavelength range substantially untransmittable through the section is detected. A monitoring device generates an output signal based on the light detection indicating the presence or absence of an object.
Owner:OPTOSYS SA
Ultrasonic locator system and method
InactiveUS20050128099A1Electric signal transmission systemsEqual length code transmitterSonificationDependability
An ultrasonic transmitter system(s) and method(s) are described having location and tracking capabilities. The transmitter's, by using ultra sound and encoded micro-modulation, are able to provide enhanced longevity and reliability. A maze algorithm is devised that further provides discrimination of false detections, versus true detections, and no detection.
Owner:ASCOM SWEDEN
Island detection method adopting low-frequency sinusoidal phase perturbation
InactiveCN104155537ANo detection blind zoneGrid-connected current distortion is smallElectrical testingBlind zoneIslanding
The invention discloses an island detection method adopting low-frequency sinusoidal phase perturbation. The island detection method comprises the following specific steps: 1, determining a grid-connected inverter output current instruction; 2, determining the island detection judging rule according to the grid-connected inverter output current instruction in the step 1 and the value of the quality factor Q of a local load; 3, computing the voltage frequency f at the common connection point between a photovoltaic grid-connected system and a power network in a real-time manner; 4, carrying out island effect determination according to the frequency f obtained in the step 3 and the island detection judging rule obtained in the step 2. The island detection method has the characteristics that no detection blind zone exists; the distortion of grid-connected current is low.
Owner:XI'AN POLYTECHNIC UNIVERSITY
Method for RF card detection in a contactless system
ActiveUS20060175406A1Memory record carrier reading problemsSubscribers indirect connectionComputer networkEngineering
A method and processor-readable storage medium for performing the method of identifying RF cards in a card reader's field. Polling requests are sent to cards in a card reader's field. Where a clear response from the sent command is received from a responding card, the response is saved, the responding card moved to an Active state, and the timeslot number incremented if possible and the above steps repeated until no clear response is received. Where no clear response is received, a determination of whether a collision has occurred is made. If no collision occurred, the timeslot number is incremented; if a collision did occur, another polling request is sent. Discovered cards are returned when no cards or collisions are detected after every timeslot is polled.
Owner:ATMEL CORP
Method for performing tracking before weak target detection based on virtual spectrum
ActiveCN108802722ASolve severe deformationTroubleshoot group settingsRadio wave reradiation/reflectionVelocity UnitSignal-to-noise ratio (imaging)
The invention relates to a method for performing tracking before weak target detection based on virtual spectrum, comprising: acquiring radar echo data and obtaining a target single-frame echo function; obtaining the velocity resolution based on a velocity domain envelope of target multi-frame accumulation, and determining the number of velocity filters; for each velocity filter, constructing a virtual spectrum whose peak value is the measurement value of a resolution unit, wherein the center position is the target position of the last frame predicted by the velocity filter; accumulating the intensity of the virtual spectrum of each frame in a current batch to obtain a multi-frame accumulation result of each velocity filter; according to a preset detection threshold, judging whether the peak value of the velocity filter exceeds the detection threshold or not, otherwise judging that a target is not detected, recording a position unit and a velocity unit where the maximum peak is, and estimating the position and velocity of the target according to spatial domain and velocity domain waveforms of the target; and performing track backtracking and outputting. The method can improve the signal to noise ratio gain, detection probability and parameter estimation precision after multi-frame accumulation.
Owner:HARBIN INST OF TECH
Syncronization signal detection apparatus and synchronization signal detection method
InactiveUS20060056555A1Television system detailsColor television detailsNo detectionComputer science
A synchronization signal detection apparatus and a synchronization signal detection method for improving the reading performance of an input signal after the dissolution of a defect state or the like. Under a predetermined condition after no synchronization signals from an input signal have been detected in predetermined detection periods and the interpolation of synchronization signals has been started, the judgment about whether each of the synchronization signals detected from the input signal continuously is detected at normal timing or not is performed. Then, according to the judgment result, the resynchronization operation of the synchronization signals detected from the input signal and reproducing synchronization signals is performed. Thereby, the state in which the synchronization signals having different timing from originally expected timing are used owing to the interpolation of synchronization signals can be immediately dissolved.
Owner:SONY CORP
Method and device for protection of a microcircuit against attacks
ActiveUS8555390B2Easy to operateHigh similarityMemory loss protectionError detection/correctionAttackNo detection
The method of protection of a microcircuit against an attack includes:a step (205) of determining if an attack has been detected,if an attack has been detected, a step (210, 510) of executing a protection function, andif no attack has been detected, a step (215, 515) of executing a decoy function simulating the protection function and perceptible from outside the microcircuit in a manner substantially identical to the protection function. In some embodiments the decoy function has a power consumption substantially identical to that of the protection function, the protection function effects a step of writing predetermined data at a first address of a non-volatile memory, and the decoy function effects a step of writing in non-volatile memory at a second address different from the first address.
Owner:IDEMIA FRANCE
Alerting a driver to the presence of a pedestrian on a road
InactiveUS20090091474A1Improve detection rateMinimizing false alarmControlling traffic signalsControl with pedestrian guidance indicatorDriver/operatorEngineering
System and method alerting drivers approaching a pedestrian crossing and notifying them of the presence of a pedestrian on the pedestrian crossing or any other accidents-prone road sections. By this, an additional traffic safety measure is provided. The presence of the pedestrian crossing marking is not always sufficient. Thus, the proposed system and method are also directed at providing a forgiving infrastructure for both inattentive drivers and jaywalking pedestrians. The system and method utilize movement and weight sensors to detect a movement upon a pedestrian crossing and its vicinity. After negating a possibility that this movement is caused by a passing vehicle, the system invokes illuminating indicators directed at approaching drivers, alerting them to the presence of a pedestrian on the pedestrian crossing. The system may be calibrated to optimize the detection rate, minimizing false alarm and no detection.
Owner:KONFORTY MOSHE +2
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