145 results about "Trigger delay" patented technology

A pixel-based display utilizes persistence-of-vision to sweep text and graphics in a cylindrical plane, including time and date, custom messages and animations. The display is generated from a light array with a column of modulated light emitting elements, which is mounted on a rotating display assembly. Power and data are combined on a fixed control assembly and inductively coupled to the display assembly. A control assembly processor interprets a display application language that describes display-specific tasks to generate command, mode, character and graphic data for the display assembly. The control assembly processor also reads a trigger position sensor and adds a trigger delay to generate a virtual trigger command, which provides for flexible display positioning and scrolling display effects.

The invention provides an all-working-condition automatic RB control method, which relates to the field of thermal power generation. The prior art lacks an RB control method comprising the process control of different working conditions and linkage functions of different device control modes, is easy to generate the phenomenon that the operating conditions of machine groups and the device control boundary conditions are indefinite so that the control process has great risk and is easy to cause tripping operations of the machine groups. The all-working-condition automatic RB control method comprises the processes of triggering delay time selection, RB rate selection, target load selection, jump-grinding mode selection, device linkage mode selection, machine group control mode selection, RB resetting and the like, and by aiming at the process control of the different working conditions and the linkage functions of the different device control modes, the method can effectively improve the working condition adaptability and the success ratio of the RB function, and prevent the damages caused by the tripping operations of the machine groups as far as possible.

An apparatus and a method for operating an endothelium reflection microscope. The apparatus comprises an optical head including: an illuminating system, an eye-front observation optical system along a central channel in which an alignment-use light spot is received and imaged by a camera comprising a digital optical sensor, and an enlarged-imaging optical system for enlarged observation or photographing of the subject part of the digital camera. The apparatus further comprises a drive for moving the optical head and a CPU controller for automatically controlling the drive, the illuminating system and the eyefront optical system. The method comprises an endothelium image acquisition procedure in which the grey level inside a check area of the camera sensor is constantly checked during the advancement along an advancement direction (Z-); when the grey level reaches a predetermined threshold value, a delay time (Δt) is triggered; and when the delay time (Δt) lapses, the acquisition of one or more images of the endothelium by the digital camera is enabled.

A triac controller includes a triac driver that provides a triac control signal suitable for connection to a gate terminal of a triac, such that, when in a power-on condition, the control signal carries at least a first firing pulse during each half period of the alternating current power supply. A soft start subcircuit and a zero crossing detector directs the triac driver to produce the first firing pulse at a first firing pulse delay time after the zero crossing time. During a soft start operation the first firing pulse delay time varies monotonically with each successive half period from an initial delay time to a final delay time. An auto-retriggering subcircuit causes the triac driver to produce a second firing pulse at a predetermined retriggering delay time from an end of the first firing pulse if the triac is not in an on conduction state after the end of the first firing pulse during a same half period. The auto-retriggering subcircuit causes the triac driver to produce retriggering firing pulses periodically for so long as the triac is not in the on conduction state during the same half period; however, it is inhibited from causing the triac driver to produce retriggering firing pulses during a predetermined retriggering mask period at an end of the same half period. The soft start subcircuit includes a table specifying a plurality of predetermined first firing pulse delay values. A set signal is used to determine an index into the table. The plurality of predetermined first firing delay values is monotonically organized with respect to the index into the table, and a programmable rate variable determines a rate of change of the first firing delay values during a soft start operation.

The invention relates to methods and devices for recording three-dimensional distance-measuring images of an object surface by measuring light propagation time using a short-term integrated photodetector. For starting a light-induced pulse on the transmission side, a trigger signal is produced that is at the same time used on the receiving side for opening at least one integration window for receiving back-scattered light-induced pulses with a predetermined time delay. A predetermined event such as a maximum or a zero crossing is detected which, by its interval relative to the integration windows, determines a trigger delay. The trigger delay is correlated with the light propagation time and allows calculation of the object point distance d.

The invention discloses a phase changing control method and a phase changing control device. The method comprises the steps of detecting whether the transient disturbance of a DC power distribution system satisfies a disturbance criterion condition, when the transient disturbance satisfies the disturbance criterion condition, determining the maximum trigger delay angle of a current converter on the inversion side of the DC power distribution system during the phase changing operation, and then controlling the current converter on the inversion side of the DC power distribution system to perform the phase changing operation based on the determined maximum trigger delay angle, wherein the determined maximum trigger delay angle is smaller than the maximum trigger delay angle used before the transient disturbance. According to the phase changing control method, the corresponding maximum trigger delay angle can be determined according to the degree of the transient disturbance of the DC power distribution system, and therefore, the phase changing margin can be guaranteed and the failure in phase changing in case of great transient disturbance can be avoided.

The invention provides a laser-induced breakdown spectroscopy analysis system which comprises a control unit, a pulse laser, a beam splitter, a movable positioning platform, a spectrum collecting unit, a spectrograph and a data processing system, wherein the beam splitter, the movable positioning platform, the spectrum collecting unit, the spectrograph and the data processing system are sequentially arranged along the emitted direction of pulse lasers; the beam splitter splits the emitted light pulse of the pulsed laser into a main light path and a sampling light path; the main light path is provided with a laser beam expanding-collimating and focusing optical system and a sample positioning unit which forms a feedback control with the movable positioning platform; the sampling light path is provided with a pulse laser energy measurement module and a pulse trigger delay unit; the control unit outputs multiple control signals; the control signal output ends of the control unit are respectively correspondingly connected to the sample positioning unit; and the data output end of the spectrograph is connected to the data processing system.

This invention discloses a method for extracting avalanche signals of the APD single photon detector including the following steps: after the triggering signals pass through a trigger delay unit, part of them is added into the cathode of APD after passing through a gated pulse control unit, then current samples are carried out at the anode to get the original signals, the other part is input into the trigger via the counting delay unit and the control unit, the original signals are sent into the trigger via a comparator as the clock of the trigger, which finishes the pulse extraction of APD avalanche signals triggered by the two parts of signals, part of the extracted pulses is fed back to a dead zone time control unit , the other part outputs signals from the output of the trigger and outputs pulse signals with controlled pulse width via a width control unit.

A DLL-based programmable clock generator using a threshold-trigger delay element and an edge combiner is proposed. A threshold-trigger delay element with full swing complementary output signals consumes no dc power. It exhibits small delay error resulting reduced out jitter. It also increases the linearity of delay time versus control voltage. The circular edge combiner can multiply the input signal at a lower supply voltage. The rise and fall time of output signal are more symmetrical. It also present the multiplication factor of the clock generator can be easy to choose with the increasing of the number of delay elements.

A proximity fuze (proximity fuse) comprising an ultra wideband (UWB) radar transmitter, a UWB radar receiver, an antenna, a timing system, and a signal processor. One embodiment includes an antenna with an annular conical radiation pattern. In another embodiment, a trigger delay is produced that is related to target detection range. In a further embodiment, multiple range shells are utilized to further discriminate target characteristics including velocity. A method is disclosed that utilizes target range, velocity, signal amplitude, and radar signal phase to identify the target and trigger the detonation. A proximity fuze system having a long storage life is disclosed comprising a proximity fuze element powered by a turbine generator and internal gas source.

The invention relates to a method, a terminal, a server, and a system for evaluating video quality, with the evaluating method comprising: obtaining the distortion value of a decoded and restructured multi-framing image via the distortion value of each frame image and the data size of the multi-framing image in reinforced layer after the expanding coding of the multi-framing image MPEG-4fine fraction; obtaining the peak signal-to-noise ratio of the multi-framing image according to the distortion value; obtaining the time delay dithering value and trigger delay value of network transmission; and evaluating the quality of the video according to the peak signal-to-noise ratio and time delay dithering value and trigger delay value of network transmission. The terminal triggers delay and time delay dithering to evaluate video quality by obtaining the peak signal-to-noise ratio of the decoded and restructured multi-framing image, thereby improving the accuracy of the evaluation. The distortion value of the decoded and restructured multi-framing image is obtained by the distortion value of each frame image in the reinforced layer and data size of multi-framing image in the reinforced layer, thereby reducing the calculating complexity.

A method (300) for delivering monitoring data is proposed. The monitoring data is collected on a central server from selected managed computers, in order to be provided to multiple clients (in response to periodic requests). In the method of the invention, for each managed computer the central server estimates (336;351-354) an expected duration of a next collection of the monitoring data (according to the duration of one or more preceding collections). A trigger delay of the next collection is then calculated by subtracting (366) a time advance to the expected time of the next request (defined by the corresponding period); the time advance is based (339-348;357;363) on the expected duration of the next collection, suitably incremented by a safety margin (so as to prevent receiving the next request before the corresponding collection has completed). The monitoring data is then pre-fetched (315-324) from the managed computer when the trigger delay expires.

The invention relates to a trigger-delay based real-time simulation control method which belongs to the technical field of industrial control. The method comprises the following steps: establishing a real-time simulation control platform, establishing a controlled object model in a trigger mode by adopting the Simulink technique, generating an executable program of the controlled object model by adopting the Real Time Workshop technique, and downloading the executable program in a target machine with a real-time working core. In the control method, a two-way circulating trigger signal with a rising edge and a falling edge is designed, the control signal and the trigger signal are transmitted to the controlled object model on the target machine via an analog output interface, and then the output of an error between the controlled object model and a reference signal is collected by the delay mechanism. The error signal serves as the next input signal for the control method to enable the synchronous operation of the controlled object model and the control method. The trigger-delay-based real-time simulation control method can verify the reliability of the control method and the hardware performance of the board, and can reduce the consumption of the digital-to-analog / analog-to-digital conversion card and reduce the test cost.

The invention provides a laser vibration measurement calibration big trigger delay accumulation calibration method, belonging to the radio metering test technical field, and is characterized in that by utilizing the periodic characteristics measured by a sine waveform phase difference with a period T, i.e., a corresponding time difference increases T when a phase difference increases 2Pi, T measurement accuracy is much higher than the measurement accuracy of the phase difference; the big delay time of a digital oscilloscope is divided into a plurality of small delays, and each small delay is smaller than T so as to guarantee that the number N (N is an integer) of sinusoidal signal period included in measuring and determining big delay time does not occur counting determination errors, and furthermore, a phase difference measuring method is used for measuring time delay less than a T portion, and the time delay is combined into the big delay time difference of the digital oscilloscope; the delay of a laser vibrometer can be read through the big trigger time delay measuring function of the digital oscilloscope. The laser vibration measurement calibration big trigger delay accumulation calibration method can perform measuring calibration on any trigger delay time, and does not have the problems such as insufficient hardware delay measuring range scope, definition, and calibrated points.

The invention relates to a method for inhibiting the subsynchronous resonance of a wind power system. Based on a controlled series compensation method, a trigger delay angle of a controlled series compensation thyristor valve group is controlled and the current of a valve group reactor L is adjusted, so that controlled series compensation equivalent impedence is controlled, the equivalent impedence is corrected in a closed-loop control mode, and the trigger delay angle is corrected in real time. The method is characterized in that: by adopting a PSCAD / EMTDC software and MATLAB software joint operation mode and based on an MATLAB computing method and phase shift between capacitor voltage zero-crossing moment and synchronous turnover moment, an additional damping control algorithm is designed, the controlled series compensation real trigger delay angle is calculated and the subsynchronous resonance is inhibited.

The invention discloses a myocardium T1 quantifying method. The method includes the steps that after electrocardiograph gating trigger delay, non-layer-selection inversion pulses are applied; real-time interlaced collection of at least two layers of images is carried out with a fast spoiled gradient echo low-angle shot sequence of a radial sampling trajectory, and the inversion recovery process of signals is captured; a sampling line in diastole is selected to serve as a K space center line; with the selected sampling line as the center, the sampling line is symmetrically selected to carry out image reconstruction according to the size of a reconstruction window; a T1 quantifying graph is fitted with restructured images. The invention further discloses a device based on the method. By means of the method and the device, multiple layers of T1 quantifying images can be collected in one time of breathholding, the whole heart can be covered in two or three times of breathholding, and thus time waste and patient discomfort caused by breathholding are reduced.

The invention discloses an infrared ray human body induction energy saving and disaster prevention switch and a socket. An infrared ray human body sensor (1) collects a signal about whether the human body moves about in the effective area of the sensor and generates high level or low level (the sensor is a renewable triggered delay output model, that is, after induced output high level, if a person moves about in the effective area of the sensor in a delay time slice, then output always keeps high level; after detecting every activity in the human body, the sensor automatically postpone a delay time slice and takes the last time activity as the initiation of the delay time). The high / low level controls breakover or blockage of a transistor (2); the breakover or blockage of the transistor controls pick-up or disconnection of a relay (3), and finally controls closure or disconnection of power supply source. Therefore, when people are in a room, power supply is automatic and normal; when no people are in the room and time surpasses the given time delay time, power automatically and immediately cuts off, thus conserving energy and avoiding disaster caused by unexpected short circuit.

A mixed signal measurement instrument provides for the display of both analog and logic signal waveforms using a “no dead time” architecture. For a logic signal all trigger events are detected, the logic signal is sampled at a high rate to produce a sampled logic signal data, the sampled logic signal data are delayed to provide a pre-trigger delay and then are drawn in real time in response to the detected trigger events. A FIFO is used to delay the sampled logic signal data, with the position of the trigger event on the display being determined coarsely by an effective depth of the FIFO. The sampled logic signal data may also be compressed into compression codes prior to the FIFO. A fast drawing engine receives the sampled logic signal data from the FIFO as either data samples or compression codes, and draws a logic waveform using four rows of the drawing engine memory—one row for each of four logic states. The vertical position and height of the logic signal waveform on the display is determined when the logic waveform is transferred from the fast drawing engine to a conventional display buffer.

The invention relates to a novel portable laser induced spectrum detection system, and belongs to the technical field of laser detection. The ultrashort pulse laser of subnanosecond laser makes the material surface produce a plasma spectrum with certain intensity, and then spectrum analysis is employed to obtain the material composition. The system is characterized by comprising an optical fiber coupling of subnanosecond pulse laser, a signal acquisition fiber, a C-T structure grating spectrometer, a data processing and display system and a battery module. The system can realize contact type measurement of solids and powder materials, such as metals, minerals and soils, and accurate detection of the content of more than 20 elements including iron, nickel, copper, magnesium, phosphorus, sulfur and carbon. The invention does not need any laser pulse trigger delay design, realizes real-time composition detection of all kinds of solid and powder through simple optical path and structure, and has the advantages of simple operation and fast measurement.

The present invention discloses a no power consumption electronic starter that can reduce electricity consumption and can improve service life and consists of a trigger circuit and an electronic switch circuit, the output end of the trigger circuit is connected with the control end of the electronic switch circuit, the control end of the trigger circuit is connected with a delay control circuit, the delay control circuit and the trigger circuit form a zero-crossing trigger delay cut-off circuit. The present invention is mainly used in refrigerate and air conditioner. Since the present invention realizes zero-crossing trigger and delay cut-off and zero power consumption, the consumption of electricity power is reduced and the energy-saving effect of the refrigerate and the air conditioner is improved.

The invention provides a built-in testing method for the delay of a trigger. The method comprises the following steps of: accumulating the delay of triggers to be tested, and comparing the delay with a period of a reference clock to generate a detection signal determined by the comparison; converting the detection signal, and then outputting the detection signal so that the detection signal can be directly observed from the outside of a chip; and determining the accumulated delay of the triggers to be tested through continuously changing the period of the reference clock and detecting the change of an observable signal, and finally, calculating the precise delay of a single trigger to be tested. In addition, the invention also provides a built-in testing system for the delay of the trigger. The system consists of an adjustable clock generator, a trigger delay accumulation circuit, a delay comparison circuit and an observable signal generation circuit.

The invention discloses a method and system for switching control, a user terminal and a network device. The method for switching control comprises the steps that after an uplink service is successfully established, UE detects SNPL values with preset detection time serving as a period and identifies whether the SNPL values are smaller than a first preset SNPL threshold value in a 6H event measurement control message issued by the network device in advance; if the answer is positive, a timer is started by the UE to time according to a time period corresponding to triggering delay information in the 6H event measurement control message; if each SNPL value detected in the time period corresponding to the triggering delay information is smaller than the first preset SNPL threshold value, a 6H event measurement report message is sent to the network device by the UE, so that the uplink service on the UE is switched to an appropriate cell and an appropriate frequency point by the network device. According to the method and system for switching control, the user terminal and the network device, the edge service performance of the cell under an uplink high-speed service mode can be improved and the conditions that due to the improvement of the performance, uplink service data sending delay is prolonged or the delay is prolonged too frequently and the cell is updated unnecessarily are avoided.

The invention provides a delay-compensation-based multi-pulse thyristor trigger control method. The method comprises the following steps: performing regular intermittent sampling on three alternating current line voltage signals of which phases exceed a natural phase shift point by 60 degrees at a sampling period T; performing hysteresis zero-crossing comparison on the three alternating current line voltage signals and a set hysteresis value to obtain three corresponding zero-crossing signals by virtue of a hysteresis link; obtaining synchronously triggered delay zero-crossing signals of which phases exceed the natural phase shift point by 60 degrees by virtue of a delay compensation link; obtaining an initial moment and a sequence number for driving the emission of six paths of thrystor triggering pulses according to the delay zero-crossing signals; starting performing triggering pulse transmission processing for N times at the period T from the initial moment for the wave emission of the triggering pulses according to a set triggering pulse number N. According to the method, the shortcomings of a conventional digital thyristor trigger are overcome, system running efficiency and reliability can be remarkably improved, and the stability of direct current bus voltage is maintained.

The present invention provides an open-loop system ultra-wide bandwidth pulse source array time domain wave beams forming and scanning method The method comprises basic steps of setting initial values for parameters of array element spacing, array element number, scanning angle list, pulse resident time and the like; computing trigger delay sequence of each array unit to the first predetermined point according to corresponding formulas; a master control system generating delay instructions and sending them to a delay control unit; the delay control unit controlling the small time difference between the pulse source outputs through a numeric accurately-controlled delay line and assuring that the time difference counteracts the wave path-difference at the predetermined point for realizing the forming of synchronized wave beams at the predetermined point; going to a next predetermined point from the predetermined point when the radiation pulse resident time value in the predetermined point reaches to a predetermined value, and repeating the wave beam forming step for realizing the time domain wave beams forming of wave beams of a pulse source array between adjacent points. The present invention has the characteristics of simple structure, low cost, stable and reliable performance, maintenance-free, strong extendibility and wide scope of application.

The invention discloses an extra-high-voltage direct-current transmission line protection method based on a trigger angle control characteristic. According to the method, an extra-high-voltage direct-current control system is analyzed; and by utilizing the inconsistency between change trends in a positive direction fault and change trends in a negative direction fault for a trigger delay angle ofa rectification side and a trigger advance angle of an inversion side, protective criteria are created; and a new protective principle is formed on the basis of interactive judgment of judgment information of the two sides. When a line has an internal fault, the trigger angles of the rectification side and the inversion side are increased; and the trigger angle of at least one side is reduced whenthe line has an external fault. Based on the difference, the criteria are created. The two sides exchange state information of protective criterion actions; and the fault is determined on the basis of the judgment of the state information of the two sides. The protection method is concise in principle, easy to set, high in sensitivity and capable of rapidly identifying the internal and external faults; and the communication content of the method is a state quantity, which is high in reliability and easy for engineering realization.

The invention relates to a dynamic response performance test method for a TCR (Thyristor Controlled Reactor) type SVC (Static Var Compensator) for large-capacity shock load. The method includes the following steps that: influences on electric energy quality caused by a test are analyzed, a switching scheme is determined; a target reactive power value and a response lower-limit value of a TCR is calculated; a test point is arranged, required signals are synchronously acquired; and the actual triggering angle of the TCR is obtained, a response performance test is completed. According to the dynamic response performance test method of the TCR type SVC for the large-capacity shock load of the invention, the dynamic response performance of the TCR type SVC is evaluated according to response time; a filtering compensation branch is cut off at a high-voltage synchronous circuit breaker or other switching devices when current crosses a zero point, bus-bar voltage, total incoming current, the feeder current of the cut-off filtering compensation branch, and the phase current of the TCR are acquired; the zero crossing cutoff point of the feeder current of the filtering compensation branch is adopted as a zero time point; a triggering delay angle corresponding to 10% of the target reactive power value of the TCR is the response lower-limit value; a time point when the actual triggering angle in the phase current waveforms of the TCR is larger than the response lower-limit value is a response time point; and the difference value of the zero time point and the response time point is the response time.

The invention provides a high-power light-emitting diode (LED) impulse adjustable stroboflash device, comprising a display and input unit, an impulse generation unit, a drive and amplification unit and an LED luminescent unit. A liquid crystal display (LCD) and keyboard input unit inputs impulse width, impulse interval and trigger delay, field programmable gate array (FPGA) is used for designing a synchronous impulse generation circuit, and a high-power LED is used as a lighting source, wherein the LCD and keyboard input unit sets impulse width, impulse interval, trigger time and duty cycle, sets information and sends the information to the impulse generation circuit; the impulse generation circuit generates corresponding impulse according to the set impulse information to the LED drive and amplification circuit so as to perform LED flash. The device controls the LED to flash by adopting synchronous trigger technology, and triggers a high-speed camera, a streak camera and other camera devices to start a shutter for capturing instant information. The LED lamp is in a closed sate when no trigger impulse is generated so as to realize energy conservation and environmental protection.

The invention discloses a method for accurately positioning a trigger position based on a programmable circuit. The method for accurately positioning the trigger position based on the programmable circuit comprises the steps that time base gears and trigger delay of a data collection and analysis type instrument are detected; whether a user changes the time base gears or trigger delay or not is judged, if so, software parameters are arranged and sent to a field programmable gate array (FPGA) through bus communication, and a collection interpolation process is restarted; a processor obtains sampling data and combines the real-time sampling data into an array according to the channel combination condition; and when the data collection and analysis type instrument is located at an interpolation gear, real-time interpolation is carried out, then, trigger point repositioning is carried out, an interpolation point is adjusted, so that a generated waveform performs stable display taking a trigger level as a reference point. According to the method for accurately positioning the trigger position based on the programmable circuit, interpolation and trigger accurate positioning are realizedthrough pure hardware, and consuming time is less. The scheme is clear in division of labor, according to the execution fast and slow level of software and hardware, by combining real-time requirementof an oscilloscope, the characteristics of high software calculation capacity are fully played, and key parameters required by the hardware interpolation are calculated.

The invention discloses a method for unicellular sorting by using a unicellular printer. The method comprises the steps of (1) preparing samples: performing centrifugation on subcultured CHO-K1 cellsfor 5min, and using a bacteria-free Dulbecco's phosphate buffer solution or a subculturing substrate for resuspending, wherein the cell density is 1E6cells / mL; 2 ) setting liquid drop adjustment parameters: starting the liquid drop quality control of the unicellular printer, setting the trigger delay as 3ms, setting depth as 10[mu]m, and setting the speed as 120[mu]s / ms; (3) setting sorting parameters: setting the diameters of cells as 12[mu] m-18[mu]m, setting the cell roundness as 55-100%, and setting the cell detection radius as 60[mu]m; and (4) performing sorting: sorting the cell samplesin an ink box of the unicellular printer to hole plates, and sorting one cell for each hole. Through the adoption of the method, the unicellular sorting efficiency and the monoclonal recovery rate areincreased. Compared with CHO-K1 cells in the prior art, the other sorting and culturing conditions are notably improved /

The invention discloses a scanning signal control method for pulse-pumping Q-switched laser cleaning. The method includes the following steps that parameters of a laser are set, and a pulse-pumping Q-switched laser is started, and emits discontinuous pulse laser; parameters of a signal control panel are adjusted, sawtooth signal time is equal to pulse width pumping time, the duty ratio of sawtoothsignals is equal to the pulse-pumping duty ratio, triggering delay time of the sawtooth signals is adjusted, and the pumping time of the sawtooth signals and the pumping time of the pulse-pumping Q-switched laser are synchronous; through non-uniform periodical swinging of a galvanometer motor, and continuous and even linear laser spots are output. By means of the scanning signal control method, the problem that due to a continuous-emitting discontinuous pulse emission mode of the pulse-pumping Q-switched laser, distribution of scanned spots is interrupted and discontinuous is solved, and application of laser cleaning of the light source is achieved.