958 results about "Pulse counting" patented technology

The sensitivity of a motion sensor or detector in a security system is adjusted by a remotely-transmitted signal, such as from a user interface device in the security system. In another approach, a pet wears a transmitter on its collar that transmits a wireless signal to command the motion sensor to adjust its sensitivity, e.g., by entering a pet immune mode, when the pet is in the room that is protected by the motion sensor. In another approach, a remote monitoring site sends instructions to the motion sensor via a communication interface. The sensitivity can be adjusted by adjusting a pulse count, optical gain, or electrical or optical sensitivity of the motion sensor.

Supervised wireless leak detection system, having a leak detection sensor unit, capable of transmitting a uniquely coded signal in response to a detected leak, a supervised wireless valve control transceiver unit having a receiver, capable of receiving said uniquely coded signal, and a transmitter for feeding the uniquely coded signal within the system, a valve shut-off mechanism in communication with said valve control transceiver unit said valve shut-off mechanism having a motor attached to a valve, said motor creating a rotation pulse used to close and open said valve, and a processor having an electronic circuitry containing sensor(s), detecting said motor rotation pulse count during a motorized valve closure or open process. Said processor functions in a setup process to memorize (learn) said motor rotation pulse count, required, to close and or to open the valve. Wherein said processor upon receipt of said uniquely coded signal in response to a detected leak, applies power to the motor to close the valve, the motor controlled to stop turning the valve in response to a processor received motor rotation pulse count number, substantially equal to a previously stored number needed to close or open said valve. A digital, voice, or SMS text message phone dialer is add to dispatch the detected leak signals, and notify monitoring personnel supervised system operation, end provide user access to turn on or off a valve(s) from a remote location(s).

An implantable restriction device can be configured to provide a restriction in a patient, for example as a function of the pressure of fluid. The implantable restriction device can include one or more sensors configured to sense a variety of parameters, such as pressure of the fluid within the implantable restriction device, pulse width, pulse amplitude, pulse count, pulse duration, or frequency, electrical characteristics, or other parameters. Data obtained by the one or more sensors (for example, the data representing pressure, pulse characteristics, and so on) may be communicated to a device located external to the patient, such as a data logger, using telemetry coils or other communicators. The data logger may store the data, and may communicate the data to a remote location via a network such as the Internet. A docking station may be provided to couple the data logger to a network and/or to recharge a cell in the data logger. The logged data may be analyzed and/or displayed using a variety of techniques to assess and/or track the condition of the restriction device or of the patient, to monitor patient physiology, or for other purposes.

An implantable restriction device can be configured to provide a restriction in a patient, for example as a function of the pressure of fluid. The implantable restriction device can include one or more sensors configured to sense a variety of parameters, such as pressure of the fluid within the implantable restriction device, pulse width, pulse amplitude, pulse count, pulse duration, or frequency, electrical characteristics, or other parameters. Data obtained by the one or more sensors (for example, the data representing pressure, pulse characteristics, and so on) may be communicated to a device located external to the patient, such as a data logger, using telemetry coils or other communicators. The data logger may store the data, and may communicate the data to a remote location via a network such as the Internet. A docking station may be provided to couple the data logger to a network and/or to recharge a cell in the data logger. The logged data may be analyzed and/or displayed using a variety of techniques to assess and/or track the condition of the restriction device or of the patient, to monitor patient physiology, or for other purposes.

An implantable restriction device can be configured to provide a restriction in a patient, for example as a function of the pressure of fluid. The implantable restriction device can include one or more sensors configured to sense a variety of parameters, such as pressure of the fluid within the implantable restriction device, pulse width, pulse amplitude, pulse count, pulse duration, or frequency, electrical characteristics, or other parameters. Data obtained by the one or more sensors (for example, the data representing pressure, pulse characteristics, and so on) may be communicated to a device located external to the patient, such as a data logger, using telemetry coils or other communicators. The data logger may store the data, and may communicate the data to a remote location via a network such as the Internet. A docking station may be provided to couple the data logger to a network and/or to recharge a cell in the data logger. The logged data may be analyzed and/or displayed using a variety of techniques to assess and/or track the condition of the restriction device or of the patient, to monitor patient physiology, or for other purposes.

A toothbrush assembly with a sound generating function for providing excitement and entertainment to a user and for encouraging a young child to brush his or her teeth is provided. The toothbrush assembly has a contact-type switch and a sound generator. The contact-type switch has a swingable contact and generates a pulse when a power switch of the assembly is instantaneously closed for every swing of the swingable contact according to the tooth-brushing movement of a user. The sound generator has a counter for counting pulses from the contact-type switch and a sound recording and play back unit for generating a voice message or musical tone when the sum of the pulses counted by the counter reaches a predetermined value. The sound recording and play back unit of the sound generator outputs different voice messages or musical tones according to different predetermined values reached by the sum of the pulses counted by the counter.

An engine rotation information detection device including: a generator that rotates in synchronization with an engine to output an AC voltage; a pulse signal generator that detects reluctors of a rotor having many reluctors and one reluctor missing portion to generate a pulse; counting means that counts the number of detections of a zero point of a waveform of the AC voltage in each detection section, the detection section being a section between a crank angle position where the pulse signal generator detects an edge of each reluctor and a crank angle position where the pulse signal generator detects a next reluctor; and reference crank angle position identification means that specifies a detection section including the reluctor missing portion from a count value counted by the counting means and identifies a pulse generated at a reference crank angle position based on the specified detection section.

Methods and means for measuring and adjusting the gain of a photomultiplier tube (PMT), or other photo-detector with electron multiplication gain, for the purpose of achieving accurate light measurement, such as in a luminescent radiation dosimeter reader. With a PMT illuminated by a light emitting diode or other light source, the PMT output signal is measured in two modes, signal integration and photon pulse counting. The measured PMT gain is calculated as the ratio of the integrated signal to the photon pulse count. The PMT high voltage may be adjusted to cause the measured PMT gain to correspond to an established calibration gain value, or the data from the PMT may be adjusted to compensate the deviation of the measured PMT gain from the calibration gain value. The light source may be a controllable light source that can be adjusted to provide a specific photon count rate output as measured by the PMT. This invention provides for maintaining light measurement calibration without requiring temperature stabilization or a fixed light source.

The invention discloses laser-array pore molding devices and a method. The steps of the invention includes that, firstly, pore diameter, pore distance and caliber parameter of a pore plate are set, and a processing file is produced, secondly, laser power, pulse width, pulse repetition frequency and pulse count are set, thirdly, the parameter of light beam location scanning is set, fourthly, work-pieces are located, a visual system is located, and vacuum negative pressure absorbs a probe guide plate, fifthly, pressure and flow capacity of opening assistant gas are set, the processing is started, finally, the pore diameter, the pore distance and the caliber parameter are measured after the finishing of the processing. The laser-array pore molding devices include an ultraviolet solid laser with high repetition rate and ultrashort pulse, a laser beam generator, a collimation beam-expanding device, a shutter, a light beam location scanning device, a CCD visual location system, an XYZ displacement working platform, and a vacuum negative pressure absorbing-sheet frame. The invention has the advantages that the disadvantages of low efficiency, easy damage of a 'punch', changeable pore diameter and the like which exit in the present mechanical punching manner are overcome, dynamic digital hologram is directly pressed on the surface of the material of noble metal commemorative coins, thereby ensuring the esthetics of the commemorative coins.

A device for measuring exposure to radiations including at least a component for detecting photons including at least a component for detecting photons or particles associated with at least one circuit for acquiring and counting detection events. The response curve of the number of counted events versus the number of photons or particles sensed by each detection component is a monotonous increasing curve.

The invention discloses a system for measuring network clock synchronization, is applied to the communication and smart grid fields. The system comprises a pulse countering module, a time counting module, a clock reference module and a synchronization calculation module, wherein the pulse counting module calculates pulse frequency difference between a master clock and a slave clock, the master clock is synchronous with a remote reference clock, and the slave clock is synchronous with the master clock through a network so as to be synchronous with the remote reference clock; the time counting module measures the time difference between the master clock and the slave clock; the clock reference module inputs a reference clock, and the reference clock is synchronous with the remote reference clock; and the synchronization calculating module is used for calculating network clock synchronization parameters according to the time difference and the pulse frequency difference and outputting time synchronization parameters. The system disclosed by the invention can be used for evaluating the clock frequency synchronization accuracy and the time synchronization accuracy which can be reached at each node by an IEEE1588PTP (Institute of Electrical and Electronics Engineers 1588 Peer To Peer) clock synchronous network, and important reference data is provided for clock synchronization network optimization, and performance prediction on application and equipment depending on clock synchronization.

A pixel for the detection of electromagnetic radiation or impinging high energy particles, in particular for detecting X-ray photons, comprises a radiation receptor for converting the electromagnetic radiation or impinging high energy particles into a radiation signal, a converter for converting the radiation signal into a pulse train, and an analog accumulator for accumulating the pulses of a pulse train to an analog signal for readout. The analog accumulator is adapted such that the analog signal is non-linearly proportional to the pulse count. Such non-linear analog accumulator has the advantage of an large dynamic range.

Aspects of a method and system for detection of long pulse bin 5 RADARs in the presence of Greenfield packets are presented. In one aspect of the system, a processor in a wireless communication device may receive a plurality of pulses via a received signal. The processor may select at least a portion of the received plurality of pulses. The processor may compute a time duration value and a pulse count value based on the selected at least a portion of the received plurality of pulses. The processor may determine whether the received signal comprises a RADAR transmission signal based on the computed time duration value and the computed pulse count value when the time duration value is greater than or equal to a threshold time duration value and the pulse count value is greater than or equal to a minimum pulse count threshold value.

A ganged-detector pixel cell is used in a device having an array of such pixel cells to construct an x-ray and gamma-ray radiation energy imaging device. The ganged-detector pixel cell comprises a detector pixel array of two or more detectors pixels disposed on a semiconductor detector substrate. The detector pixels of the pixel array are in electrical communication with a single pixel signal counting circuit disposed on an adjacent ASIC readout substrate. The ganged-detector pixel cell has a Ratio of Correspondence (RC) between of the number of pixel detectors to the single pixel signal counting circuits in the cell of RC≧1. In practice, the Ratio of Correspondence between of the number of pixel detectors to the single pixel signal counting circuits in a pixel cell is RC≧2.

Before an amount of play in a rotation transmitting system is learned, for selecting a gear range, an overshooting control process is performed to cause the angular displacement of a motor to overshoot a target gear range position and then reverse the electric motor. The angular displacement of the motor overshoots the target get gear range position by an overshooting amount that is identical to am amount by which the electric motor is reversed. The overshooting amount is set to a maximum value of a designed amount of play in the rotation transmitting system After the amount of play is learned, for selecting a gear range, a target count is established in view of the learned amount of play and the direction in which the motor rotates, and the motor is stopped at a position where an encoder pulse count coincides with the target count without performing the overshooting control process.

The invention provides a comprehensive detection method for high resistance ground faults of an electric power system and belongs to the field of emergency protective circuit devices. The detection method comprises two parts of utilizing a transient state direction to recognize faulty lines and utilizing intermittent detection to detect intermittent faults; fault component current and voltage are calculated based on voltage and current waveforms before fault startup and a fault direction is obtained by utilizing the fault component voltage and current waveforms to calculate transient idle work; with regard to forward pulse counting, a pulse count is compared with a pre-set threshold value to judge a fault when detection time is cut off so as to more sensitively detect intermittent high resistance ground faults and cut off the fault lines in time; and furthermore, the sensitivity of a power supplying line protective device is improved so as to be good for improving the continuous and stable operation of a whole middle-voltage power distribution system and ensure the safety performance of a whole power supply system. The comprehensive detection method can be widely applied to the fields of high resistance ground fault detection and relay protection of the middle-voltage power distribution system with an effectively-grounded neutral point.

A frequency monitor circuit (FMC) that is part of an integrated circuit chip for monitoring the frequency of one or more clocks present on the chip is disclosed. The FMC includes a reference window generator, operative to output a reference window signal of a given duration, and a clock counter, operative to count all pulses, in any one of the clocks, that occur within the duration of the reference window and to output a corresponding pulse count. The FMC further includes two or more comparators, each operative to compare the pulse count with a respective given threshold value and to output a corresponding indication of frequency deviation. In one configuration, in which the clock is generated on the chip by a frequency multiplier, the reference window generator and the clock counter are shared between the frequency monitor circuit and the frequency multiplier.

Provided is a method for enhancing chemical etching through femtosecond laser to manufacture a large-scale micro-lens array. The method includes: choosing hard materials serving as femtosecond laser action targets, and generating a light destroying area at the center of the target with the femtosecond laser acting focus as the center due to the special machining characteristics of the femtosecond laser according to the shape of a micro-lens array needing machining by controlling the target moving speed of a precise machining platform and enabling the femtosecond laser to act for 100-1000 pulse counts on the surface of the target, wherein the impulse frequency is 1KHz; performing chemical corrosion on the target processed by the femtosecond laser through hydrofluoric acid solution with the volume concentration of 1% to 10%, wherein the chemical corrosion is assisted by ultrasonic wave water bath heating, the heating temperature is 30-80 DEG C, and the heating time is 40-80 minutes; and thoroughly cleaning the corroded target in deionized water, therefore a template finished product of the large-scale micro-lens array is obtained. The method for enhancing chemical etching through femtosecond laser to manufacture the large-scale micro-lens array combines the chemical etching technology and finally achieves low-cost and high-efficiency volume production of the large-scale micro-lens array.

Even if the engine is started from any crank angle position, it is possible to correctly determine the rotational direction of a crankshaft, so that fuel injection or ignition can be stopped when the crankshaft is rotating in the reverse direction. A measurement member has a plurality of angular position detection portions arranged at equal intervals in a circumferential direction of the crankshaft and a plurality of reference position detection portions at which a part of the angular position detection portions is missing. A crank angle sensor is arranged near the measurement member for generating a crank angle signal representative of the rotational position of the crankshaft. A period detector detects periods of pulses of the crank angle signal. A reference position determiner determines a plurality of reference positions based on the signal periods. A counter counts the pulses of the crank angle signal. A rotational direction determiner detects the rotational direction of the crankshaft from the number of pulses counted between a plurality of reference positions.

The invention discloses a method for correcting zero position of an incremental encoder of a motor by directly utilizing a servo driver, and in particular relates to a zero position correction method for a permanent magnet alternating current servo motor incremental encoder, which does not require any extra equipment and is easy to operate, high in precision, time-saving and high in practicality. The servo driver receives a position pulse signal transmitted by the incremental encoder, once the servo driver captures a Z pulse signal transmitted by the incremental encoder, the servo driver immediately performs zero clearing on the position pulse counting of the incremental encoder and recounts in an ABZ counting mode, and the motor operates in a closed loop control mode; a closed loop control motor of the servo driver is stopped, and the motor rotor is locked in the U-phase center, and the relative positions of the rotating shaft of the incremental encoder and the rotating shaft of the motor rotor are adjusted, so that the position pulse counting value of the incremental encoder is any one integer value in a closed interval [-10,10], and the rotating shaft of the incremental encoder and the rotating shaft of the motor rotor are fixed.