Abstract: Trigger groups for semi-automatic firearms have a hammer, a trigger element, a sear, a selector, and a disconnector assembly, the disconnector assembly operable when the selector is in a first position to retain the hammer in the cocked position in response to release of the trigger element to the rest position subsequent to discharge of the firearm by pulling the trigger element, and the disconnector assembly operable when the selector is in a second position to release the hammer to the striking position in response to release of the trigger element to the rest position subsequent to discharge of the firearm by pulling the trigger element, such that the firearm discharges once per cycle of the trigger element when the selector is in the first position, and fires once for each forward or rearward motion of the trigger element when the selector is in the second position.

Abstract: Trigger groups for semi-automatic firearms have a frame, a hammer connected to the frame and movable between a cocked position and a striking position, the hammer being biased toward the striking position, a trigger element connected to the frame and movable by a user between a forward position and a rearward position, a selector connected to the frame and movable between at least a first position and a second position, and a plurality of retention facilities each operable to selectively restrain the hammer in the cocked position, and when the selector is in the second position to enable discharge of the firearm in response to movement of the trigger to the forward position after movement to the rearward position and to enable an additional discharge of the firearm upon release of the trigger to the forward position.

Abstract: The invention relates to a vibration damper (35) for archery bows. The vibration damper comprises a housing (36) extending along an axis (X) and forming at least one chamber (37, 38, 39, 40), wherein the at least one chamber is partially filled with granular solid material (9). The housing is formed by a stack of two or more bowl-shaped parts (1, 2, 4) arranged along the axis, wherein the at least one chamber is closed by the subsequent part in the stack. The stack of parts is held together by a central attachment device (41) extending along the axis, to close the at least one chamber, such that the at least one chamber forms an open space circumventing the central attachment device.

Abstract: A connector includes a connector body coupled to the toy gun to be connected with an upper portion of the magazine; a hole formed to pass through front end of the connector body and configured to accommodate a projectile provided by the magazine; a projectile fixing portion positioned on the connector body in which the hole is formed and configured to fix the projectile provided via the hole; a projectile sensing portion which senses whether or not a projectile remains in the hole, a position of the projectile sensing portion being changed depending on whether or not a projectile remains in the hole; and a first protrusion interlocked with the projectile sensing portion, the first protrusion moving forward or backward to control a stopper depending on whether or not a projectile remains in the hole, the stopper allowing or blocking movement of a cylinder of the toy gun.

Abstract: Improvements in a projectile launcher is disclosed. The launcher converts an airsoft gun to fire paintballs to handle feeding either airsoft projectiles or paintball projectiles depending upon the installed kit. The launcher includes a hydraulic damper allows the fire and reload to operate in a controlled motion that allows a projectile to be fires and the next projectile to the loaded in a rapid succession. An improved magazine allows multiple different types of projectiles to be installed in the magazine. An interchangeable trigger mechanism and interchangeable barrel to launch different diameters of projectiles. Different types of firing mechanisms can be removed and interchanged in the launcher. In addition to the barrel can also be changes as the projectile is changed.

Abstract: A vehicle-mounted cover which keeps a firearm dry, protects the muzzle from debris, and permits quick access.

Abstract: The invention relates to a device for event representation in duel shooting. Known devices have the disadvantage that, in order to practice duel shooting, it is always necessary to modify a shooting range. The aim of the invention is to create a device for duel shooting which does not require complicated modification of a shooting range. This aim is achieved according to the invention in that a visualizing unit is provided for representing events, which is positionable within the range of perception of the marksman's eye.

Abstract: A ball joint gimbal (BJG) seeker assembly is provided and includes a back shell, a retaining system disposed to urge the seeker ball toward the back shell and a piezoelectric ultrasonic motor and sensor system arrayed between the seeker ball and the back shell. The piezoelectric ultrasonic motor and sensor system is pre-loaded by the retaining system and configured to controllably drive an angular orientation of the seeker ball.

Abstract: In a method for visually adaptively camouflaging objects, the background and/or the surroundings in front of which and/or in which the object is situated are/is detected by means of a camera or a sensor array. The background and/or the surroundings thus detected are/is reproduced as an image (3) in a device for camouflaging the object.

Abstract: A modular ballistic barrier assembly for deployment in proximity to a protected high value asset such as electrical grid equipment. A ballistic barrier assembly comprises a plurality of prefabricated ballistic barrier panel units that can be stacked on top of each other. Each panel unit is made of spaced apart angled steel louvers or slats, arranged in one or more sections. The louvers are arranged in one or more vertically extending, spaced apart rows, having an outwardly facing row of louvers presenting a downwardly angled surface to an approaching projectile, and an inwardly facing row of louvers presenting a second layer of ballistics protection. Steel I-beam support columns are provided at spaced apart intervals to receive and support a stack of panel units. The panel units are made to interlock with vertically adjacent, stacked panels, so that multiple panel units can be stacked.

Abstract: An armored vehicle includes: a basic armored vehicle having a predetermined basic external armor; a modularized armor structure exchangeably attached to the basic external armor; and an unmanned aerial vehicle loaded on the modularized armor structure. The modularized armor structure includes: an unmanned aerial vehicle loading section configured to load the unmanned aerial vehicle; an armoring material structure formed of armoring material; and an attaching section used to exchangeably attach the modularized armor structure to the basic armored vehicle.

Abstract: A bolted telescopic rod-type defense spray apparatus includes a first tube body, a cap, a compression elastic piece, a second tube body, an anti-extraction element, a spring pin component, and a push joint component. In the bolted telescopic rod-type defense spray apparatus, two sectioned tube pieces and a spring pin component and a push joint component that are between the two tube pieces are applied to lock and unlock a relative position relationship between the two tube pieces, so that the defense spray apparatus has composite functions of a rod-piece additional function of a locking configuration of relative positions of the two tube pieces and a press-lever spray irritant gas can of an unlocking configuration of the relative positions of the two tube pieces.

Abstract: A training ammunition cartridge comprises a projectile and a cartridge case with a pyrotechnic propellant. The projectile has a projectile body with at least one compartment therein forming a void and containing a material that transitions from a solid to a liquid after set-back and after exiting from a barrel of a gun. The void is of such configuration as to cause the liquid material therein to induce forces and moments that, after a period of stable ballistic flight, destabilize the projectile and shorten its flight. Alternatively, the projectile void contains a solid mass that is released to shift its position after set-back and after the projectile exits from the barrel of the gun, wherein the void is of such configuration as to cause the mass, upon shifting, to induce forces and moments that, after a period of stable ballistic flight, destabilize the projectile and shorten its flight.

Abstract: A projectile includes a body containing pyrotechnic material. A rear cap closes a rear end of the body. A pyrotechnic unit includes an ignitor in communication with the pyrotechnic material. A striker is arranged to strike a primer of the pyrotechnic unit. A safety lever is arranged initially to restrain movement of the striker towards the pyrotechnic unit. An external safety keeper is arranged initially to clamp a portion of the safety lever to the body.

Abstract: A method includes absorbing heat generated at a flight vehicle using a heat sink, where the heat sink includes a matrix. The matrix includes a porous structure having multiple pores at least partially filled with one or more phase change materials. The method also includes converting the matrix into an insulator as the one or more phase change materials change state and exit the porous structure due to the absorbed heat. The matrix with the one or more phase change materials could include an alcogel, and the insulator could include an aerogel. The matrix could reside within a pressurized container that includes at least one seal. The at least one seal can fail due to increased pressure within the pressurized container as the heat is absorbed by the heat sink in order to allow the one or more phase change materials to exit the porous structure.

Abstract: A tape measure includes a housing having a wall defining an internal cavity and a tape port, a coilable measuring tape disposed within the internal housing and having a first end extendable out of the housing, and an end hook member including an attachment portion and a hook portion. The attachment portion is arranged to engage the first end of the tape to attach the end hook member to the tape. The hook portion extends in a direction normal to the attachment portion and includes a first face and a second face arranged to engage the workpiece. A finger guard extends from the housing, and is configured to engage the hook member, and a finger space is defined between the tape port and the finger guard and is arranged to receive a user's finger during operation of the tape measure such that the user's finger engages the measuring tape.

Abstract: A method of finding a feature of an object using an analog probe mounted on a machine tool. The method includes the analog probe and/or object following a course of motion which causes the analog probe's surface sensing region to traverse across the feature to be found a plurality of times while approaching the feature over successive traverses so as to ultimately arrive in a position sensing relationship with the feature so as to collect scanned measurement data about the feature along at least part of a traverse.

Abstract: Systems and techniques are provided for guided installation feedback for an opening sensor. Detected magnetic field strengths of a magnetic field created by a magnet of an opening sensor as detected by a magnetometer sensor of the opening sensor may be received over a time period. It may be determined that there has been a change in the strength of the magnetic field created by the magnet as detected by the magnetometer sensor based on the received detected magnetic field strengths. Accelerometer data from an accelerometer disposed in the magnetometer sensor may be received. It may be determined from the accelerometer data that the magnetometer sensor was not moving and positive feedback may be provided to an installer of the opening sensor, or it may be determined from the accelerometer data that the magnetometer sensor was moving and negative feedback may be provided to the installer of the opening sensor.

Abstract: According to one embodiment, a strain sensing element includes a film unit being deformable, a first and a second magnetic unit, and a strain sensor. The first magnetic unit is provided on the film unit and is arranged with the film unit in a first direction. The first magnetic unit includes a first magnetic body layer and a first intermediate magnetic layer. The second magnetic unit is provided on the film unit and is arranged with the first magnetic unit in a second direction crossing the first direction. The second magnetic unit includes a second magnetic body layer and a second intermediate magnetic layer. The strain sensor is provided on the film unit between the first magnetic unit and the second magnetic unit. An electrical characteristic of the strain sensor changes according to a deformation of the film unit.

Abstract: An interferometer (10) is provided that has a stage (28) configured to have a linear motion path. A first retroreflector (18) and a second retroreflector (24) are fixedly coupled to the stage (28). A tube (32) is provided, and the stage (28) is configured to reciprocate about the tube (32). A beamsplitter (14) and a 45° mirror (16) are disposed in the tube (32). A detector (22) is configured to detect light passing through the beamsplitter (14), and the beamsplitter (14) is configured to split an incident light beam into a transmitted beam (15) and a reflected beam (17), wherein the transmitted beam (15) passes to the second retroreflector (24) and the reflected beam (17) passes to the first retroreflector (18). The transmitted beam (15) and a reflected beam (17) are focused on the detector (22).

Abstract: A temperature measuring method of a component of a substrate processing chamber including a surface being worn or being deposited with a foreign material by using. The method includes: providing data representing a relationship between a temperature of the component and an optical path length of a predetermined path within the component; measuring an optical path length of the predetermined path within the component by using optical interference of reflection lights of a low-coherence light from the component when the low-coherence light is irradiated onto the component to travel through the predetermined path; and obtaining a temperature of the component by comparing the measured optical path length with the data.

Abstract: Spatially modulated light emanating from an object moving along a flow path is used to determine various object characteristics including object length along the flow direction. Light emanating from at least one object moving along in a flow path along a flow direction of a spatial filter is sensed. The intensity of the sensed light is time modulated according to features of the spatial filter. A time varying electrical signal is generated which includes a plurality of pulses in response to the sensed light. Pulse widths of at least some of the pulses are measured at a fraction of a local extremum of the pulses. The length of the object along the flow direction is determined based on the measured pulse widths.

Abstract: An optical interferometric system for measurement of a full-field thickness of a plate-like object in real time includes two light sources, two screens, two image capturing devices, and an image processing module. The light sources radiate incident lights toward a reference point on the plate-like object in respective directions to produce respective interference fringe patterns (IFPs). The image capturing devices capture light intensity distribution images respectively of the IFPS imaged respectively on the screens. The image processing module calculates a fringe order at the reference point according to the light intensity distribution images, and obtains a full-field thickness distribution of the plate-like object according to the fringe order.

Abstract: A proximity sensor which is capable of facilitating a measure against crosstalk for different sets is provided. The proximity sensor includes a light emitting device, and a light receiving device including a plurality of light receiving parts, wherein the light receiving device has a function of arbitrarily selecting any of the plurality of light receiving parts.

Abstract: In accordance with disclosed embodiments, there are provided systems, methods, and apparatuses for implementing maximum likelihood image binarization in a coded light range camera.

Abstract: A system for acquiring surface data from one of the surfaces of a curved panel having a specular surface and developing a surface definition of the panel includes a conveyor for conveying the panel in a first direction, at least one display projecting a preselected multi-phase non-repeating contrasting pattern, and at least one camera, each one of the cameras uniquely paired with one of the displays. The system may also include a control programmed to execute logic for controlling each of the camera/display pairs to acquire the desired images, and logic for analyzing and combining the data acquired by the cameras to construct a definition of the surface of the panel.

Abstract: The time and labor required to set an extraction region of point cloud data is decreased. A shape measuring apparatus includes a projecting unit that projects a measurement beam onto a measurement region of a measurement target, an imaging unit that captures an image of the measurement target onto which the measurement beam is projected, a movement mechanism that relatively moves the projecting unit or the imaging unit with respect to the measurement target so that a position of the measurement region of the measurement target changes, and an extraction region setting unit that sets an extraction region for image information used for calculating a position of the measurement target from capture images captured by the imaging unit, on the basis of positions of images of the measurement beam captured by the imaging unit when the measurement beam is projected onto different measurement regions.

Abstract: A system for measuring reflected optical distortion in a contoured panel having a specular surface includes a conveyor for conveying the panel in a first direction, at least one display projecting a preselected multi-phase non-repeating contrasting pattern, and at least one camera, each one of the cameras uniquely paired with one of the displays. The system may also include a control programmed to execute logic for controlling each of the cameras to acquire the desired images, and logic for analyzing and combining the data acquired by the cameras to construct a definition of the surface of the panel, and logic for performing one or more optical processing operations on the surface data to analyze the optical characteristics of the panel.

Abstract: The invention provides a tilt detecting device, in which a fixed member and a tilting plate are relatively rotatably provided via a pivot member, either one of the fixed member or the tilting plate is integral with the pivot member, comprising a tilt detecting unit provided on either of the fixed member or the tilting plate which relatively rotates with respect to the pivot member, and an angle detection pattern formed on the pivot member, wherein the tilt detecting unit comprises a light source for projecting an illumination light to the pivot member, a photodetection element for receiving the illumination light reflected by the pivot member, an optical system for projecting a pattern image to the photodetection element and an arithmetic unit for detecting a rotation of the pivot member based on a projecting position of the pattern image projected onto the photodetection element when the pivot member rotates.

Abstract: A method for characterizing a microfabrication process and the product thereof is described. A substrate having TSV's formed therein is assessed by determining the geometries and positions of the top and bottom ends of a TSV. Individual TSV's as well as the entire pattern of TSV's formed in a substrate may be assessed.

Abstract: A waveguide apparatus includes a planar waveguide and at least one optical diffraction element (DOE) that provides a plurality of optical paths between an exterior and interior of the planar waveguide. A phase profile of the DOE may combine a linear diffraction grating with a circular lens, to shape a wave front and produce beams with desired focus. Waveguide apparati may be assembled to create multiple focal planes. The DOE may have a low diffraction efficiency, and planar waveguides may be transparent when viewed normally, allowing passage of light from an ambient environment (e.g., real world) useful in AR systems. Light may be returned for temporally sequentially passes through the planar waveguide. The DOE(s) may be fixed or may have dynamically adjustable characteristics. An optical coupler system may couple images to the waveguide apparatus from a projector, for instance a biaxially scanning cantilevered optical fiber tip.

Abstract: A device identifying a cyclic movement type of a physical system from a set of possible cyclic movements types includes: a movement sensor providing an observation data sequence concerning the physical system; a storage storing at least one statistical hidden-state Markov model; and a computer programmed to analyze the observation data sequence and select one cyclic movement type based on the stored statistical model. The storage includes least one statistical hidden-state Markov model for each possible cyclic movement type and the computer is programmed to analyze compatibility of the observation data sequence with each possible cyclic movement type based on the statistical model associated with this cyclic movement type. The computer is further programmed to provide a sequence of hidden states of the statistical model associated with the selected cyclic movement type, based on the observation data sequence and the statistical model associated with the selected cyclic movement type.

Abstract: A calibration block for calibrating a touch probe includes a calibration block body forming a bored hole providing a concave measurement surface, and a three dimensional object protruding from the calibration block body and providing a convex measurement surface, wherein the convex measurement surface provides opposing measurement contact points in at least two dimensions.

Abstract: A calibration gauge having plane symmetry is set in a position other than a rotation center of a rotary table. The calibration gauge is measured while the rotary table is driven to rotate. Offset of a measurement axis is determined based on a phase pattern of the rotary table when a stylus head detects the calibration gauge.

Abstract: A cellular phone and personal protective equipment usage system comprises a camera for detecting a person within an environment and a processor which receives information detected by the camera and determines whether the person is involved in distracting activities such as using a cellular phone or other portable electronic device, or print media, or is using personal protective equipment, and issues an alarm signal upon determining that the person is using a cellular phone or is not using personal protective equipment. The camera may be provided on or within a vehicle and the person is an operator of the vehicle. Alternatively, the camera may be mounted in a stationary location within a working site.

Abstract: The present disclosure relates to a measuring instrument and a method implemented in such a measuring instrument. The measuring instrument includes an image sensor, an actuator, a control unit and a processor. The actuator is arranged to move a field of view of the image sensor. The control unit is configured to cause the image sensor to capture at least one digital image during motion of the field of view of the image sensor by the actuator. The exposure time for capturing the digital image is longer than an identifiable section of a regulating pattern for modulation of an optical radiation either emitted or reflected by at least one target. The processor is configured to process at least a portion of the captured image for detecting in the at least one portion the identifiable section of the regulating pattern. Such a measuring instrument is advantageous for detecting and/or identifying a target in the vicinity of the instrument.

Abstract: A terminal apparatus, a method and a system for setting up a destination and providing information are provided, in which the terminal apparatus includes a communicator which is configured to communicate with other terminal apparatuses, an input unit which is configured to receive a user command, a display which is configured to display a list including at least one item which corresponds to at least one of the other terminal apparatuses, and a controller which is configured to control the communicator to transmit destination information to a first terminal apparatus which corresponds to a selected item that is selected from among the at least one item included in the displayed list via the input unit. Accordingly, a user is provided with routes to the destination, without having to input address or name of the intended destination on his own terminal apparatus.

Abstract: A method for monitoring performance of a navigation system onboard a vehicle is provided. The method obtains, at a vehicle electronic control unit (ECU), a triangulated vehicle location and vehicle motion data, the triangulated vehicle location obtained from the navigation system; computes an estimated vehicle location, using the triangulated vehicle location and the vehicle motion data; calculates a probability that the estimated vehicle location exists within an error bound of the triangulated vehicle location; and when the probability indicates that the estimated vehicle location does not exist within the error bound, performs a task onboard the vehicle.

Abstract: An information remote notification device is provided. The information remote notification device includes an orientation sensor configured to detect an oriented direction of the information remote notification device, a communicator configured to acquire sensor information from an external terminal device, and a notifier configured to notify the sensor information corresponding to the oriented direction detected by the orientation sensor. The sensor information is obtained by transmitting and receiving a detection signal and includes at least information obtained from a direction corresponding to the oriented direction detected by the orientation sensor.

Abstract: A driver assistance apparatus includes an interface configured to receive first navigation information generated based on GPS information of the vehicle, a camera configured to acquire an image of a view ahead of the vehicle, and a processor. The processor is configured to detect an object in the acquired image of the view ahead of the vehicle, determine, based on the detected object, a driving situation of the vehicle, and determine whether the driving situation of the vehicle is consistent with the first navigation information. Based on a determination that the driving situation of the vehicle is not consistent with the first navigation information, the process generates, based on the driving situation of the vehicle, second navigation information of the vehicle, and provides the second navigation information to an output unit.

Abstract: The present invention provides a method, the QCODE method, of geotagging all postal addresses and other points of interest that one might want to navigate to and which allows the user to identify these addresses and other points of interest with a code consisting of 6 alphanumeric characters or less. A point of interest may or may not have a street address, for example, “the main entrance to the Jefferson Building at the USPTO complex in Alexandria Virginia” or “the entrance to the VIP parking area at Yankee Stadium”. The disclosure teaches embodiments that are naturally upgraded to integrate changing spatial information due to addition of countries, better data, political changes, and other similar changes in geographical data. A single geocoding engine is capable of handling the various address formats in use in different countries and jurisdictions.

Abstract: A system and method for mapping parameter data acquired by a robot mapping system is disclosed. Parameter data characterizing the environment is collected while the robot localizes itself within the environment using landmarks. Parameter data is recorded in a plurality of local grids, i.e., sub-maps associated with the robot position and orientation when the data was collected. The robot is configured to generate new grids or reuse existing grids depending on the robot's current pose, the pose associated with other grids, and the uncertainty of these relative pose estimates. The pose estimates associated with the grids are updated over time as the robot refines its estimates of the locations of landmarks from which determines its pose in the environment. Occupancy maps or other global parameter maps may be generated by rendering local grids into a comprehensive map indicating the parameter data in a global reference frame extending the dimensions of the environment.

Abstract: An autonomous driving control apparatus and method using navigation technology are disclosed. The autonomous driving control apparatus includes a driving mode setting unit, a navigation unit, and an information provision unit. The driving mode setting unit sets the driving mode of a vehicle. The navigation unit offers guidance on a driving route to a destination input by the driver of the vehicle based on the set driving mode. The information provision unit, if the driving mode of the vehicle is set to autonomous driving mode, provides the navigator of an adjacent vehicle and the navigator of the terminal of a pedestrian with autonomous driving information received from the vehicle, and also provides the navigation unit with behavior information received from the adjacent vehicle and the terminal of the pedestrian.

Abstract: A predefined area is divided into a plurality of tiles, a respective one of the tiles of the area being determined as a starting tile and the respective remaining tiles being determined as reference tiles, and special nodes, being predefined that are arranged in the starting tile or in the respective reference tile. For the respective starting tile, a correction value is determined, in each case in relation to one of the reference tiles, such that a respective cost ratio is determined for each special node of the respective starting tile in relation to each special node of the reference tile on the basis of the edge costs of the connections that are situated between the respective special node of the starting tile and the respective special node of the reference tile. The cost ratio is also determined on the basis of a heuristic value of the respective special node of the starting tile in relation to the respective special node of the reference tile.

Abstract: Systems and methods for geocoding coordinates of users, vehicles and destinations on a map, and to identify when a transit vehicle deviates from a system generated driving route are disclosed. As the transit vehicle travels along the route, its actual path of travel may be compared to an optimal driving route generated by the system to obtain route deviation data. The route deviation data and/or road network data may be filtered to remove data noise and further analyzed to build a profile of a driver operating a transit vehicle. A digital signature identifying at least one pattern of behavior and/or operating characteristic associated with a specific driver operating a vehicle is further developed, and may be used to allow a system administrator of a vehicle fleet to filter out, or filter for, specific driver types based on driving behaviors that may be suitable for a particular operation.

Abstract: A method of processing positioning data to create map data is disclosed, the map data including a plurality of navigable segments representing segments of a navigable route in the area covered by the map with each segment being arranged to have speed data associated therewith. In at least one embodiment, the method includes processing the speed data to categorise the speed data into a plurality of time periods for the navigable segment with which the speed data is associated; and averaging the speed data within each time period in order to generate a measured speed profile for the navigable segment.

Abstract: A driver visibility detection system for a vehicle includes an indicator, an eye position obtainer, and a visible range calculator. The indicator indicates the driver to look at, through a windshield of the vehicle, a furthest ground position of a road on which the vehicle is traveling. The eye position obtainer recognizes an eye position of the driver when the driver looks at the furthest ground position. The visible range calculator calculates a visible range of the driver based on the eye position detected by the eye position obtainer.

Abstract: A method for delivering information to a user terminal is provided. The method includes obtaining user data. The user data may include a plurality of user activity locations and corresponding user activity time. The method may further include identifying a first position and a second position based on the user activity locations and the user activity time, selecting a travel path based on the first position and the second position, determining a user activity area based on the selected travel path, and sending content to the user terminal based on the user activity area.

Abstract: A method for the real-time estimation of the total consumption of a fluid, in particular water or gas, distributed from a unit (A) to users (b1, b2 . . . ) via a network of supply pipes (E) with a branch (d1, d2 . . . ), for each user, fitted with a counter (c1, c2 . . . ) of the fluid consumed by the user, which method involves defining cohorts of users having homogeneous behavior with regard to the consumption of fluid; defining, for at least one of these cohorts, a sample of users from the cohort that is statistically sufficient to represent the cohort; fitting only the branches of the users of each sample with a remote reading device (t1, t2, . . . ) for reading the consumption; also fitting remote reading devices to the branches of the users of the other cohorts that have not been sampled; and processing the information provided by the remote reading devices to obtain a real-time value representative of the total consumption of the network.

Abstract: Detecting fraud in resource distribution systems includes determining a meter of a resource in a resource distribution system exhibits a characteristic indicative of fraud and increasing a collection frequency of measurements of a usage of the resource of the meter per unit of time.