Abstract: The present disclosure is directed to a single-phase reclosing method, device and storage medium for AC/DC system. The method comprises: acquiring three-phase voltages at inverter-side AC bus close to the transformer, three-phase currents measured at the outlet of inverter-side AC line and three-phase voltages at inverter-side AC bus far from the transformer; calculating the energy calculation value and energy operation value of the fault line; identifying the fault nature of fault line within the maximum time delay, according to the energy calculation value and energy operation value of fault line and an energy criterion of transient/permanent fault; issuing a reclosing control signal based on the fault nature of fault line to realize effective reclosing of the fault line.

Abstract: Disclosed is a hazard detector connected to a circuit that has: a plurality of circuit ends and a plurality of detectors, wherein the detector is connected intermediate the plurality of circuit ends, a circuit driver connected to the plurality of circuit ends so that the circuit forms a loop circuit, the circuit driver controlling one or more power sources to selectively provide power to the first circuit end and the second circuit end, and the detector has a short isolator switch that, when opened, breaks electrical continuity downstream of the detector, wherein the detector scans for a short at startup by receiving power, closing the switch, measuring one or more circuit parameters, and determining whether there is a short based on the one or more parameters.

Abstract: Systems and methods for dynamic device programming in accordance with embodiments of the invention are disclosed. One embodiment includes a vehicle telematics device including a processor, a memory containing a dynamic telematics messaging application, a plurality of accumulators, and a communications interface, wherein the dynamic telematics messaging application directs the processor to obtain a first message data describing a requested set of sensor data using the communications interface, dynamically reconfigure the plurality of accumulators to measure the requested set of sensor data, and transmit a second message data describing the measured set of sensor data.

Abstract: A fault detection system for an agricultural machine is configured to display to an operator a virtual layout of fuses and/or relays for the machine in an arrangement corresponding to an actual/physical layout of the fuses and/or relays on the machine. The system can monitor for fault conditions of the fuses and/or relays, and display a location of a fuse or relay corresponding to a physical location of where the faulty fuse or relay can be found from among other fuses and/or relays. A faulty fuse and/or relay can be highlighted, such as by changing a color of the fuse and/or relay, for rapid identification. The system can also display a list providing descriptions for the fuses and/or relays to assist with fault resolution.

Abstract: An inventory management device to monitor a volume of a material in a container may generally include a capacitive level sensor to measure a first capacitance value and a second capacitance value; a vibration sensor in electronic communication with the capacitive level sensor to generate a vibration signal that corresponds to a vibration of the container; a storage unit in electronic communication with the capacitive level sensor to store the first capacitance value; a controller in electronic communication with the capacitive level sensor and storage unit to measure a change in the capacitance between the first capacitance value and second capacitance value; a transmitter in electronic communication with the controller to transmit an output signal when the controller measures the change in capacitance; and a flexible battery to power the capacitive level sensor, vibration sensor, storage unit, controller, and transmitter.

Abstract: A medical device (2, 3, 20), in particular a medical infusion device (2, 3, 20), comprises a control unit (200) for controlling operation of the medical device (2, 3, 20), a visual alarm generator (201) for generating a visual alarm signal (V), and an audio alarm generator (202) for generating an audio alarm signal (S). Herein, the control unit (200) is constituted to control the visual alarm generator (201) and the audio alarm generator (202), in case of an alarm condition, for producing a visual alarm signal (V1, V2) and an audio alarm signal (S1, S2) which are offset with respect to each other by a predetermined time difference (T1). In this way a medical device is provided which allows to enhance the perception of a user to help the user to quickly identify a medical device on which an alarm condition has occurred.

Abstract: An acoustic transducer and audio system are checked for operability continuously during operation without interfering with their operation. An inaudible test signal is added on top of a normal audio signal of an electronic device. A mix of the test signal and the normal audio signal is converted to a digital signal which is processed by a type of Fourier transformation, e.g. the Goertzel algorithm, to derive the magnitude of the digital signal at the test signal frequency. The derived magnitude is used to gain knowledge about the functionality of the acoustic transducer and its electrical connection to the electric device, as well as a common audio path.

Abstract: Methods and systems are described for monitoring and compensating an offset between a reference voltage used in a first device and a corresponding reference voltage used in a second device. The first device can include offset circuitry. The offset circuitry receives two voltage signals. The first voltage signal is equal to a first voltage value that is used as a reference voltage in the first device. The second voltage signal can be a time-varying voltage signal that has a known relationship with a second voltage value that is used as a reference voltage in the second device. The offset circuitry can then determine the second voltage value from the second voltage signal, and output an offset value based on a difference between the first voltage value and the second voltage value.

Abstract: A safety system receives inputs from safety related input devices such as smoke detectors and the like and provides triggering outputs to notification appliances such as bells and the like and/or safety functions such as door releases. To facilitate testing of the input devices the system incorporates a timer operative to disconnect the output devices for a period of time during which testing may be achieved, automatically reconnects the output devices at the end of the time, records the number of triggering outputs received at the outputs during that period.

Abstract: A biological information monitoring system includes: an alarm generator which generates an alarm signal indicative of an abnormality of biological information of a patient, or an abnormality of a unit related to monitoring of biological information of a patient, or an abnormality due to an operation of a unit related to monitoring of biological information of a patient; a first output generator which performs a first output based on the alarm signal; a detector which detects information related to the first output; a second output generator which performs a second output being independent from the first output; and a warning controller which controls the second output generator to perform the second output based on the detected information related to the first output.

Abstract: An electronic device security and tracking system. A system includes one or more clients, wherein the clients are electronic devices; and a server computer system connected to each of the clients, wherein the server computer system is capable of tracking and locating each of the clients. In one aspect, the server computer system includes one or more web servers coupled to each of the clients, wherein the web servers include a website for the electronic device security and tracking system; one or more file transfer protocol servers coupled to each of the web servers; and one or more database servers connected to each of the web servers.

Abstract: A periodic tester to determine the readiness of a fire pump system interfaces with a fire pump controller, an electric motor, and a sprinkler system. The fire pump controller has a power on/off sensor which interfaces with an electric motor which starts the fire pump to provide water to the sprinkler system. The power on/off system has a contactor coil as a component. The periodic tester targets two of the main components of fire system failure: the power on/off sensor and the contactor coil. The periodic tester may be retrofitted to existing systems and interface either directly or indirectly with the power on/off sensor to accommodate both systems that have a solenoid valve and those that do not. The periodic tester is designed to attempt to start the system only once during a set cycle. Any failure to start is displayed through audible and visual alarms.

Abstract: An operation-mode control unit controls switching of an operation mode of a portable wireless terminal apparatus between a normal mode and an alarm mode. An alarm-data sending unit sends data pertaining to a situation of a user to a predetermined destination as alarm data, when the operation mode is switched to the alarm mode. In the normal mode, the portable wireless terminal apparatus performs normal functions, such as a phone call and an e-mail. In the alarm mode, the portable wireless terminal apparatus performs a user protecting function in addition to the normal functions, such as sending the alarm data to the predetermined destination.

Abstract: A system and method for circuit protector monitoring and management includes at least one circuit protector defining an interruptible current path therethrough upon an occurrence of specified operating condition in a circuit; a status element associated with the circuit protector and adapted to monitor an operating state of the current path; and an electronic management system in communication with the status element, wherein the management system is adapted to automatically alert and summon responsible personnel when the circuit protector has operated to open the circuit path, and identify the location of the operated circuit protector.

Abstract: A circuit protector signal transmission system, kit and method involves at least one circuit protector defining an interruptible current path therethrough upon an occurrence of specified operating conditions in a circuit, a status element associated with the circuit protector and adapted to monitor an operating state of the current path, an electronic gateway device in communication with the status element and adapted to receive a data signal from the status element corresponding to the operating condition of the current path. The data signal includes location information and identification information for circuit protectors as they operate to interrupt the current paths in an electrical system.

Abstract: A user interface, method system and program for circuit protector management in an electrical system.

Abstract: An electronic control unit includes an input interface having multiplexer circuits, each of which circuits is supplied with input signals supplied from an outside of the electronic control unit, and a failsafe processing part that determines whether an abnormality occurs in the input interface by referring to a state of a specific multiplexer circuit that is at least one of the multiple multiplexer circuits when determining that an output signal of the input interface has an abnormal state and executes a failsafe process based on results of determination as to whether an abnormality occurs in the specific multiplexer circuit.

Abstract: A gate comparator control panel, in accordance with the subject invention, allows a user to define up to four different gate regions that may exist on any of the live waveforms, maths waveforms, or REF waveforms. A menu for each gate controls the position of each gate and selects the source for the signal that is to be gated. All gates must be the same width. A high level application copies the gated region of a waveform into a REF memory. For example, Gate 1 would go into REF 1, gate 2 into REF2 and so on. A user-settable tolerance value is used to determine if difference between the waveforms of the gates reaches a point at which a violation is indicated. A master gate position control causes all gates to move by the same amount, thus maintaining a constant distance between them. A master gate width control causes all gates to change width.

Abstract: In a wireless security system, the system controller includes one or more antennas for reception of signals from remote sensor-transmitter units. To detect antenna failure, the system controller generates a test signal with a known parameter and transmits this test signal via a first antenna. The system controller then measures the parameter of the corresponding test signal received, if any, via a second antenna, and compares the parameter of the corresponding test signal received to a predetermined threshold parameter. When the parameter of the test signal received via the second antenna differs from the threshold by a predetermined amount, or predetermined margin for error, an antenna failure message is generated.

Abstract: The present invention provides an auxiliary backup device of burglary alarm system, connected with an alarm output and an auxiliary power output of a burglary control panel and an alarm device, comprises in combination an electrical circuit having a relay means and a DC power source. The relay means comprises a diode connected in parallel with an operating coil which induces a normally opened switch and also a normally closed switch. The two terminals of the diode are connected to the auxiliary power output of the control panel. The normally opened switch is coupled in series with the alarm output of the control panel and the input of the alarm device, such as an audible and visual warning devices. The output of the DC power source is connected in series with the normally closed switch and the input of the alarm device.

Abstract: The present invention comprises an audio alarm for providing a back-up acoustic output in response to a sensed parameter including a first audio alarm circuit having a first transducer for providing a first acoustic output in response to the sensed parameter, a second audio alarm circuit having a second transducer which provides the back-up acoustic output in response to a predetermined fault condition, and which is acoustically coupled to the first transducer. The second audio alarm circuit provides an electrical signal by converting the first acoustic output of the first transducer into an electrical signal. A detector circuit is connected to the first and second audio alarm circuits and responds to the sensed parameter and to the electrical signal from the second audio alarm circuit to provide the predetermined fault condition by interpreting the electrical signal from the second audio alarm circuit.

Abstract: A clock signal generator comprising a first oscillator which normally supplies clock pulses to the output of the clock signal generator, a first counter for counting the pulses generated from the first oscillator and producing a carry signal after counting n1 pulses generated from the first oscillator, a second oscillator for producing clock pulses for possible back-up purpose, a second counter for counting the pulses generated from the second oscillator and adapted to produce a carry signal after counting n2 pulses generated from the second oscillator and to be reset by the carry signal from the first counter, n2 being larger than n1, and a control circuit which blocks the output from the second oscillator as long as no carry signal is supplied thereto from the second oscillator.

Abstract: The failure alarm device for an appliance of the present invention include a first alarm for indicating an abnormality if an abnormality should occur in the appliance main body, and a second alarm for indicating an abnormality if an abnormality should occur in the appliance main body and when the first alarm fails to function.

Abstract: Apparatus for connecting in series a plurality of communication line pairs, typically direct connected security loops used by alarm companies for monitoring customer's facilities. A bridge with pairs of bridge terminals and switches for connecting bridge terminal pairs to communication line pairs or to terminating lines. Local and remote control for the switches and control apparatus which permits service personnel to selectively terminate a bridge terminal pair with a direct or zero resistance connection line and leave a subscriber's communication line open, for maintaining service for other communication lines connected to the bridge while performing maintenance on the disconnected line. The apparatus is suitable for bridges with various numbers of terminals, such as six way, eight way and twelve way.

Abstract: A circuit breaker includes a microcomputer-based trip unit, and a remote indicator unit and power supply. The trip unit includes an optically-coupled data output system and means for generating a pulse code containing cause-of-trip information and excess demand alarm information. The remote indicator unit includes an optically coupled input circuit and a plurality of light emitting diodes to indicate cause of trip and excess demand alarm information upon receipt of an appropriate pulse code pattern. The remote indicating unit also includes relays to provide control of external alarm circuitry upon receipt of cause of trip and demand alarm information. The remote indicator unit further includes a power supply for supplying operating power to the remote indicator unit and to the trip unit. The power supply is powered both from an external AC line connection and from internal rechargeable batteries.

Abstract: An alarm system includes a number of self powered indicating elements each with an integral warning device. Each indicating element includes a control circuit which may comprise a transistor switching circuit, transistor oscillator or part of a wheatstone bridge circuit for example. Each of these control circuits is connected via two lines to a common control element at a position remote from the remainder of the control circuit, such element comprising for example a resistor, a battery or a zener diode dependent on the type of control circuit utilized. A switch is also included to provide, on actuation, either a short circuit or open circuit condition between the two lines. Actuation of this switch or tampering with the lines so as to cause a short circuit or open circuit condition to occur will result in operation of the alarm.

Abstract: A central station system in which the central station is normally connected to one or more remotely located bridging points by a dedicated communication path, each bridging point having a plurality of output ports to which one or more remote station devices are connected. In response to address signals generated by the central station, abridging point connects an identified output port to the dedicated communication path to allow communication between the associated remote stations and the central station. All other output ports are electrically isolated from the dedicated communication path. In the event of failure of the dedicated communication path, apparatus is provided for establishing an alternate communication path through the commercial telephone network. The system is highly immune to tampering and other forms of failure because of automatic decision-making capabilities of the bridging point and other features of the apparatus.

Abstract: A receiver is disclosed connected to a McCulloh loop, having an N or line side and a G or ground side, for receiving coded alarm signals from a plurality of McCulloh transmitters. The receiver is especially adapted for supplying the alarm signals to a computer and has N and G process logic circuits to ensure that the polarity of the output signals supplied to the computer from the logic circuits remains the same regardless of the polarity of input signals supplied to the logic circuits. The receiver also has an inhibit circuit to prevent the G process logic circuit from supplying its output to the computer except upon the occurrence of a fault condition in the McCulloh loop, a fault sensing circuit for sensing a fault in the McCulloh loop and for connecting the ground side of the loop and the line side of the loop together and a sampling circuit for testing the McCulloh loop during a fault condition to resume normal operation in the loop upon the clearance of the fault.