Abstract: Examples of a leak detection system are disclosed. In one example according to aspects of the present disclosure, a leak detection system includes a housing defining an interior, the housing connected to a component of a water distribution system. The leak detection system also includes a leak detection sensor contained within the interior of the housing and configured to detect a leak within the water distribution system. Additionally, the leak detection system includes a digital signal processing circuit in communication with the leak detection sensor.

Abstract: A nozzle cap assembly includes a nozzle cap defining a bore, the bore defining internal threading configured to mount the nozzle cap on a nozzle of a fire hydrant; an enclosure attached to the nozzle cap; a vibration sensor positioned within the enclosure; a circuit board positioned within the enclosure, the circuit board connected in electrical communication with the vibration sensor, the circuit board configured to process an electrical current transmitted by the vibration sensor; and an antenna connected in electrical communication with the circuit board, the antenna configured to transmit a signal received from the circuit board.

Abstract: Examples of a leak detection system are disclosed. In one example according to aspects of the present disclosure, a leak detection system includes a housing defining an interior, the housing connected to a component of a water distribution system. The leak detection system also includes a leak detection sensor contained within the interior of the housing and configured to detect a leak within the water distribution system. Additionally, the leak detection system includes a digital signal processing circuit in communication with the leak detection sensor.

Abstract: A nozzle cap assembly includes a nozzle cap defining a bore, the bore defining internal threading configured to mount the nozzle cap on a nozzle of a fire hydrant; an enclosure attached to the nozzle cap; a vibration sensor positioned within the enclosure; a circuit board positioned within the enclosure, the circuit board connected in electrical communication with the vibration sensor, the circuit board configured to process an electrical current transmitted by the vibration sensor; and an antenna connected in electrical communication with the circuit board, the antenna configured to transmit a signal received from the circuit board.

Abstract: A nozzle cap assembly includes a nozzle cap configured to mount on a fire hydrant, the nozzle cap housing defining an inner surface and an outer surface, the inner surface defining a nozzle cap cavity within the nozzle cap; an antenna enclosure mounted to the nozzle cap, a portion of the antenna enclosure disposed external to the nozzle cap; and an antenna positioned within the antenna enclosure.

Abstract: A flow sensor for a pipe includes a housing defining an interior chamber; a mounting adapter that is circumferentially coupled to an open proximal end of the housing; and a piezoelectric cable that at least partially extends within the interior chamber of the housing. The piezoelectric cable includes a piezoelectric material.

Abstract: A noisemaker system includes: a node of an infrastructure system; and a noisemaker including a vibrating plate, the vibrating plate including a top surface and a bottom surface, the bottom surface of the vibrating plate in contact with an exterior surface of the node, and an actuator configured to engage the top surface of the vibrating plate and generate an acoustic signal.

Abstract: A leak detector includes a sensor assembly including at least one sensor configured to sense acoustic signals; and at least one printed circuit board coupled to the sensor assembly and configured to support a processing device, the processing device comprising at least a microcontroller unit (MCU) and a digital signal processor (DSP), wherein the MCU is configured to continually receive acoustic signals from the sensor assembly, and wherein the DSP is configured to remain in a sleep mode except when the MCU wakes the DSP from the sleep mode at predetermined times.

Abstract: Examples of a leak detection system are disclosed. In one example according to aspects of the present disclosure, a leak detection system includes a housing defining an interior, the housing connected to a component of a water distribution system. The leak detection system also includes a leak detection sensor contained within the interior of the housing and configured to detect a leak within the water distribution system. Additionally, the leak detection system includes a digital signal processing circuit in communication with the leak detection sensor.

Abstract: Technologies for detecting leaks in a fluid distribution system are described herein. Historical leak detection information is received from a sensor in the fluid distribution system and collected in a database. A baseline is determined from the historical leak information. Current leak detection information is then received from the sensor and the probability of a leak in the fluid distribution system is determined based on a difference between the current leak detection information and the baseline.

Abstract: Examples of determining tuberculation in a fluid distribution system are disclosed. In one example implementation according to aspects of the present disclosure, an acoustical wave generator generates an acoustical wave within a fluid path of a fluid distribution system. A first acoustical sensor and a second acoustical sensor sense the acoustical wave. An acoustical signal analysis module determines an amount of tuberculation within the fluid distribution system by analyzing the sensed acoustical wave.

Abstract: A leak detection sensor includes a transducer, the transducer including a base, a piezoelectric layer, and a conductive layer and at least two leads connected to the transducer. A method of making a leak detection sensor includes obtaining a transducer, the transducer including a base, a piezoelectric layer, and a conductive layer; and effecting a mounting hole such that the mounting hole is defined in the transducer. A jig includes a support and a punch.

Abstract: A noisemaker system includes: a node of an infrastructure system; and a noisemaker including a vibrating plate, the vibrating plate including a top surface and a bottom surface, the bottom surface of the vibrating plate in contact with an exterior surface of the node, and an actuator configured to engage the top surface of the vibrating plate and generate an acoustic signal.

Abstract: A flow sensor for a pipe includes a housing defining an interior chamber; a mounting adapter that is circumferentially coupled to an open proximal end of the housing; and a piezoelectric cable that at least partially extends within the interior chamber of the housing. The piezoelectric cable includes a piezoelectric material.

Abstract: A nozzle cap assembly includes a nozzle cap configured to mount on a fire hydrant, the nozzle cap housing defining an inner surface and an outer surface, the inner surface defining a nozzle cap cavity within the nozzle cap; an antenna enclosure mounted to the nozzle cap, a portion of the antenna enclosure disposed external to the nozzle cap; and an antenna positioned within the antenna enclosure.

Abstract: A leak detection structure for attachment to a fire hydrant includes an enclosure, the enclosure defining a cavity internal to the enclosure and a leak detection subassembly located in the cavity, the leak detection subassembly including at least one leak detection sensor and at least one circuit.

Abstract: Examples of determining tuberculation in a fluid distribution system are disclosed. In one example implementation according to aspects of the present disclosure, an acoustical wave generator generates an acoustical wave within a fluid path of a fluid distribution system. A first acoustical sensor and a second acoustical sensor sense the acoustical wave. An acoustical signal analysis module determines an amount of tuberculation within the fluid distribution system by analyzing the sensed acoustical wave.

Abstract: A leak detection system includes a housing for installation within a hydrant; at least one leak detection sensor within the housing; and a transmitter circuit in communication with the at least one leak detection sensor for communicating leak detection data.

Abstract: Examples of a leak detection system are disclosed. In one example according to aspects of the present disclosure, a leak detection system includes a housing defining an interior, the housing connected to a component of a water distribution system. The leak detection system also includes a leak detection sensor contained within the interior of the housing and configured to detect a leak within the water distribution system. Additionally, the leak detection system includes a digital signal processing circuit in communication with the leak detection sensor.

Abstract: Technologies for detecting leaks in a fluid distribution system are described herein. Historical leak detection information is received from a sensor in the fluid distribution system and collected in a database. A baseline is determined from the historical leak information. Current leak detection information is then received from the sensor and the probability of a leak in the fluid distribution system is determined based on a difference between the current leak detection information and the baseline.