99 results about "Pulse mode" patented technology

User interfaces for relaying notifications to users are disclosed. In a pulsing mode, information is faded into a predetermined area of a display, where the information has a net value greater than a predetermined or dynamically computed threshold. In a stream-cycling mode, for a number of different information sources, a display time is determined for each notification based on the information's importance. Each information is displayed in turn for a length of time equal to the display time, within the predetermined area of the display. In a stream-stacking mode, information from each of a number of sources is displayed in a corresponding source summary window. When the net value of information in a notification is greater than a predetermined or computed threshold, the information may be streamed in a main notification window and can be journaled in a journal window.

An illumination system includes a plurality of solid state light emitters and a scanner operative to sequentially receive light from the plurality of solid state light emitters and to provide a time-multiplexed light output. The solid state light emitters are each operated in pulse mode to increase their brightness relative to the light output of similar emitters operating in continuous mode. The time multiplexed light output is a generally continuous output having a brightness that is greater than the brightness of the output of similar emitters operating in continuous mode. The time multiplexed light output is useful in photolithography and machine vision applications.

Optical pump modules comprising VCSEL and VCSEL array devices provide high optical power for configuring fiber optic gain systems such as fiber laser and fiber amplifier particularly suited for high power operation. Pump modules may be constructed using two reflector or three reflector VCSEL devices optionally integrated with microlens arrays and other optical components, to couple high power pump beams to a fiber output port. The pump module having a fiber output port is particularly suited to couple light to an inner cladding of a double-clad fiber, often used to configure high power fiber laser and fiber amplifier. The pump modules may be operated in CW, QCW and pulse modes to configure fiber lasers and amplifiers using single end, dual end, and regenerative optical pumping modes. Multiple-pumps may be combined to increase pump power in a modular fashion without significant distortion to signal, particularly for short pulse operation.

The invention discloses a ripple reducing circuit for a light-load pulse hopping mode of a DC-DC (Direct Current-Direct Current) converter, which mainly solves the problem that the output ripple of an existing light-load pulse hopping mode is large. The ripple reducing circuit comprises a capacitance charge-discharge unit (1), a comparison unit (2), a logic control unit (3) and a switch-on time control unit (4), wherein the capacitance charge-discharge unit (1) is used for outputting different voltage signals VC1 according to difference of switch-off signals ZC of a switch tube; the comparison unit (2) is used for comparing the voltages signals with reference voltage and supplying a zero clearing signal to the logic control unit (3); the logic control unit (3) is used for counting a pulse signal LG and outputting a switch signal RR; the switch-on time of an upper switch tube can be controlled by the switch signal through controlling the size of charge current of internal capacitance of the switch-on time control unit (4), and a peak value of inductive current can be reduced. According to the ripple reducing circuit disclosed by the invention, the output voltage ripple of the light-load pulse hopping mode of the converter is effectively reduced while the high efficiency of the converter is ensured, and the ripple reducing circuit can be used for the DC-DC converter.

A front-rear discriminating method of wide domain complete optical fiber disturbance signal is principally used in conduit monitoring, such as conduit safety monitoring of various conveying danger or high value chemical industry article, which specially includes: the background terminal controls the operation of the entire wide domain complete optical fiber disturbance testing system, which is divided into two operation modes, a front discriminating rule and a rear discriminating rule; when the system is at the operating system, the systems produces a control command by a control circuit, and the control circuit controls the selection of the detection mode, which allows the system to work at the continuous wave mode or at a pulse mode; in the continuous operating mode, the system detects whether the disturbance sensing signal appears; while in the pulse operating state, the system sends out and detects a location signal, and locates the disturbance sites; in the selected operating mode, the system completes the photo-electric detection relative to the operating mode, the photoelectric signals are amplified and conditioned in the photo-electric detection circuit, and then are captured in a data acquisition module, the captured signals form a disturbance sensing signal processing result after processing.

A quadrature modulator divides a first signal input as a local signal into an I channel signal and a Q channel signal orthogonal to each other and outputs a second signal having a desired phase delay corresponding to direct current voltages as for the first signal by giving the direct current voltages Vi and Vq to the I channel signal and the Q channel signal, respectively. A phase comparison unit detects a phase difference θ between the first signal and the second signal. A setting unit sets the desired phase delay. A controller section controls the direct current voltages supplied to the I channel signal and the Q channel signal respectively in the quadrature modulator so that an output value corresponding to the phase difference θ detected by the phase comparison unit is equal to a value corresponding to the desired phase delay set by the setting unit, and controls the direct current voltages to be the direct current voltages Vi and Vq satisfying the relation of Vi=cos θ and Vq=sin θ.

The pulse mode electron generator of the invention includes a field emission cathode with electron-emitting micropoints associated with a grid biased by means for positively biasing the grid and an anode attracting electrons emitted by the cathode. The grid is biased by a permanent positive pre-bias voltage generator delivering a rest voltage which is slightly lower than the emission threshold voltage of the cathode and in series with a positive pulse voltage generator delivering a pulse component of sufficient value to exceed the emission threshold voltage of the cathode. This facilitates the pulse mode production of electrons and reduces the power consumption needed to produce the electrons.

The invention relates to a quantitative feed electric control pressure reductor, a characteristic test system for the pressure reductor and an automatic test method. The quantitative feed electric control pressure reductor comprises a quantitative air charging device and a quantitative air discharging device, and the quantitative air charging device and the quantitative air discharging device respectively control the movement of a valve core with an air charging magnet coil and an air discharging magnet coil in an pulse mode to quantitatively charge or discharge air to a control cavity, thereby the outlet pressure of the quantitative feed electric control pressure reductor is regulated to a setting value; the quantitative feed electric control pressure reductor, a measured pressure reductor, a sensor device, a control valve, a data acquisition and control circuit and like are connected in series to form the characteristic test system for the pressure reductor, the outlet pressure of the quantitative feed electric control pressure reductor is used as the inlet pressure of the measured pressure reductor, the sensor and a collection card are used as a data acquisition device, the automatic performance of the characteristic test of the measured pressure reductor is realized by computer process control, and the test data is displayed and recorded in real time.

Provided are an impedance matching method and a matching system performing the same. The method includes: measuring an electrical characteristic of the power transmission line; determining a pulse mode of the power source; extracting a control parameter for impedance matching from the electrical characteristic of the power transmission line; and controlling the matching system through the controlparameter, wherein the matching system is controlled differently according to the pulse mode.

A power switching circuit comprising a power semiconductor switching device, a charge pump circuit having a control input to control whether it is on or off and a charge pump output, the charge pump output being coupled to a control terminal of the power semiconductor switching device, a bootstrap power supply for supplying power to driver circuitry for the power semiconductor switching device, the bootstrap power supply comprising a bootstrap capacitor coupled to a charging current source, the bootstrap power supply providing power to the driver circuitry when the power semiconductor switching device is being switched by the driver circuitry in a pulsed mode, and the charge pump supplying a control voltage to turn on the power semiconductor switching device and maintain it on when the power switching semiconductor device is to be maintained on continuously.

The invention discloses an IP-DSL network monitoring system which comprises a monitoring control front end peripheral equipment, an IP-DSL network monitoring control host, an IP-DSL digital disc video recorder and the administration user terminals, wherein the audio and visual signals are treated through A-D conversion through monitoring control host computer, data compression, signal transmission and are transmitted to the telephone line through pulse mode, the digital disc video recorder receiving the signals fro the DSL end of the monitoring control host machine and proceeding data format recovery, the processed data is stored into hard disc medium.

The invention provides a control method, a control device, a household appliance and a computer readable storage medium. The control method is suitable for a control circuit. A PFC (Power Factor Correction) circuit is arranged in the control circuit, and the PFC circuit is connected with the power factor correction circuit. When a switching device in the PFC circuit receives a specified pulse signal, the amplitude of bus voltage output by the PFC circuit is increased, and the control method comprises the following steps: detecting the load capacity operated by the control circuit; and according to the load capacity, controlling the PFC circuit to work in a high-frequency switching mode or a multi-pulse mode, or controlling the PFC circuit to synchronously rectify or cut off. According to the technical scheme, normal operation of the load can be guaranteed, bus voltage loss can be reduced under the condition of low load capacity, meanwhile, switching loss is reduced, and improvement ofharmonic performance and efficiency of the control circuit is facilitated.

The disclosed multi-tube light control method for cold cathode lamp comprises: firstly regulating system output current to minimal by linear way, then entering the burst mode for light control. This invention reduces the duty ratio, and decreases voltage/current burst.

The invention relates to laser processing of optical engineering and modern manufacturing industry field, in particular to a method and a device thereof for constructing a compact high-power laser system with an intra-cavity common point consisting of a plurality of CO2 laser devices. The laser device consists of total reflection mirrors 0-8, discharge tubes 9-17, an output mirror 18, a hollow circular bracket 20, disc brackets 21, 22 and 23, a common water cooled jacket 24, a laser device bracket 25 and a hyperbolic glass tube 26. The axes of resonant cavities are intersected in one point of an intra-cavity public area, the resonant cavities share one output mirror, and the resonant cavities can acquire high-power output and protect the output mirror from being damaged by light and are favorable for long-term effective operation; and when the discharge areas at the public point continuously discharge and each discharge tube discharges in a pulse mode, beams produce phase-locked operation to a certain degree because stimulated particles at the public point of the public area synchronously stimulate intrinsic modes of the cavities to oscillate so as to facilitate converged laser processing and application.

The invention discloses a radar radiation source pulse-to-pulse mode excavation method based on fuzzy matching. According to the radar radiation source pulse-to-pulse mode excavation method based on fuzzy matching, the degree of fuzzy matching between every two radar radiation source pulse-to-pulse sets of a certain radar radiation source is measured through setting of pulse-to-pulse similarity threshold delta values, and then the pulse-to-pulse sets with the fuzzy matching frequency larger than or equal to a support degree threshold thresh value are further excavated. The radar radiation source pulse-to-pulse mode excavation method based on fuzzy matching has the advantages that a novel analysis method for the radar radiation source pulse-to-pulse signal sequence is provided, and analysis is not limited by radar radiation source pulse-to-pulse signal individual analysis; the type of radar radiation sources with superposed radar radiation source pulse-to-pulse signal feature distribution ranges and different pulse-to-pulse sets can be conveniently distinguished; the calculation cost is low, the implementation method is engineered, and the excavated pulse-to-pulse sets can effectively improve the analysis and handling capacity for the radar radiation source pulse-to-pulse signal sequence.

A fuel injector control method comprises determining a required separation time between a termination of an on signal associated with a first injection event and an initiation of an on signal associated with a second injection event. The method comprises calculating an overlap time between the separation time and the time to charge the piezoelectric stack to a first level; dividing the overlap time into first and second time periods as a function of the charge and discharge currents; applying the charge current to the piezoelectric stack for a charge time; and applying the discharge current to the piezoelectric stack for a discharge time so as to discharge the stack to a second level, wherein the discharge time is calculated on the basis of the second time period of the overlap time. Thus, first and second injection events are merged in a pulse mode of operation.

The invention relates to the technical field of petroleum and natural gas exploration. The invention discloses a mantle source oil and gas enrichment region analysis and prediction method based on crustal stress finite elements. In a primary modeling finite element analysis result, deep fluid filling is carried out in a pulse mode along a deep fracture crustal stress low-value area. An filled shallow low-crustal stress area is divided. Asecondary model is established, analysis is carried out according to a primary modeling analysis process, the crustal stress low-value position of the shallowfracture model is checked, the position is an oil-gas enrichment area, and the position is generally a high-yield oil-gas well. Therefore, the valance source oil and gas enrichment region analysis andprediction method based on the crustal stress finite element can accurately predict the oil and gas enrichment region and the specific reservoir forming part.

The invention is titled as a cloud-platform-based intelligent physiotherapy instrument comprising a peripheral circuit, a power supply, a single-chip microcomputer, a voltage-doubling circuit, an electrode, an equipotential bandage, a WeChat bluetooth, a mobile terminal, a remote server and a payment platform. With a single-loop variable voltage waveform output, a voltage waveform is generated byprogram controlling of a single-chip microcomputer and the generated waveform is outputted to the electrode by the voltage-doubling circuit; a pulse signal is transmitted to the equipotential bandageterminal by the electrode; the single-chip microcomputer sends data to a WeChat public platform via the WeChat Bluetooth and then the data are uploaded to the remote server; and the single-chip microcomputer is used for controlling the pulse mode and strength at the mobile terminal. The cloud-platform-based intelligent physiotherapy instrument has advantages of novel structure, small and exquisiteappearance, great convenience, low cost, simple operation, and high safety and effectiveness. On the basis of combination of the modern Internet-of-Things technology, the equipment state informationand number can be uploaded to a cloud terminal. The traditional physiotherapy way is broken and digital and precise physiotherapy instrument maintenance is realized; and defects of the existing physiotherapy instrument are overcome.

The invention discloses a pressure control system for no-load starting of an emulsion pump, which comprises a speed reducing motor, a throttle valve, a Hall element, a speed measuring gear and a motor control plate. The speed reducing motor is connected with the throttle valve and used for controlling a rotating angle of the throttle valve and adjusting pressure in an emulsion pipeline. The speed measuring gear is arranged at the coupling position of the throttle valve and the speed reducing motor. The Hall element is used for obtaining information related to the rotating angle of the throttle valve through the speed measuring gear and transmitting the obtained information into the motor control plate in a pulsing mode. The motor control plate is used for adjusting the rotating angle of the throttle valve through the speed reducing motor according to information transmitted by an opening degree measuring unit and related to the rotating angle of the throttle valve and enabling the pressure in the emulsion pipeline to change between a maximum value and a minimum value within a period of fixed time. The no-load starting of the emulsion pump is achieved, and the problems that starting current is large, impact to a power grid is large, power supply return circuit wire diameter is thick and the like when a motor is started under load.

The invention optimizes the starting procedure of GPS location according to the principle of a GPS, thus shortening the start time and achieving the aim of quick positioning. In order to realize the aim, the invention comprises the following steps: step 1, a receiver of the GPS is cold started; step 2, the receiver of the GPS enters a sleep mode, and a pulsed mode is started; step 3, receiver of the GPS updates satellite information; step 4, a timer is started, the timing period is T which is less than 2 hours, and a timing count mode is entered; if the count overflows, a timer conter is reset and sends out a pulse signal; and the step 3 is returned. The invention has the effect that after being started for a first time, the receiver of the GPS only has two states which are the sleep mode and a navigation mode, wherein, warm boot is the only channel for switching the sleep mode and the navigation mode, thus solving the time-consuming problem of cold boot and warm boot.