36 results about "Phase duration" patented technology

One embodiment of the present invention facilitates efficient metering in a packet network environment by providing a single metering message, which contains sufficient information to provide the complete call tariff model for a particular call. The media gateway receiving the message can analyze the information provided in the message to determine how to provide metering pulses for all phases of the call, as well as any one-time charges, such as setup and add-on charges. Another embodiment of the invention provides a way for handling fractional pulse counts in an efficient manner. Yet another embodiment facilitates the handling of situations where charge intervals do not divide evenly into the phase duration of the phase associated with the call. In still another embodiment, the amount of information necessary to deliver the parameters of the call tariff model is minimized to reduce the overhead necessary for facilitating the metering process.

A programmable cochlear implant system utilizes multiple-resolution current sources and flexible data-encoding scheme for transcutaneous transmission. In certain embodiments, the number of current sources may be equal to or greater than 2, but equal or less than N−1, where N is the number of electrodes. The multi-resolution current source may introduce offset currents to achieve perceptually-based multiple resolutions with high resolution at low amplitudes and low resolution at high amplitudes. The flexible data-encoding scheme may allow arbitrary waveforms in terms of phase polarity, phase duration, pseudo-analog-waveform, while producing high-rate and high-temporal-precision stimulation. In one embodiment, a 2-current-source system may support simultaneous and non-simultaneous stimulation as well as monopolar, bipolar, pseudo-tripolar, and tripolar electrode configurations.

The invention relates to a method for network discovery in a wireless communication network comprising communication devices sending announcement signals regularly with a period being equal to or exceeding a predefined minimum announcement interval, wherein a first communication devicea) communicates with a second communication device during a data exchange phase on a first channel;b) freezes the communication with the second device by signalling a freezing message terminating the data exchange phase;c) scans for the announcement signal of third communication devices on a second channel in a scan phase, wherein the scan phase duration is shorter than the minimum announcement interval;d) unfreezes the communication with the second communication device by signalling an unfreezing message; ande) repeats steps a) through d).

A stimulation system including a stimulator having a multi-channel electrode array utilizing a monopolar electrode configuration. A processor is operatively coupled to the stimulator. The processor is configured to determine a channel interaction (CI) sequence using simultaneous, sign-correlated pulses and channel interaction compensation. The CI sequence has a CI pulse rate and a CI mean pulse amplitude, and produces resulting potentials that are substantially equal to desired potentials at given positions relative to the multi-channel array. The CI sequence may include temporal gaps between pulses, wherein the processor may be configured to increase the CI pulse rate, such that the temporal gap between pulses is decreased. Furthermore, the processor may be configured to reduce the pulse amplitude of the CI sequence while increasing pulse phase duration, such that charge per pulse remains substantially unchanged and the temporal gap between pulses is decreased.

The invention relates to a method for planning the quadruped robot foot end swinging track. The method includes designing the curve end point state parameter in the foot end swinging process according to the swinging span and the swinging phase duration of the foot ends; and fitting the foot end swinging track. The method for planning the foot end swinging track achieves the barrier avoidance function when the leg lifting sage has the backward and upward motion trend; can better realize the barrier avoidance function when the walking direction has the backward and upward motion trend; and moreover, the foot end swinging track parameter can be adjusted in real time to be flexibly adapted to the landform, so that the passing capability of the quadruped robot on the complex rough landform is improved.

The invention relates to a non-overlapping clock-generating circuit with independently regulated two-phase pulse duration, belonging to the field of non-overlapping clock-generating circuit. The circuit is characterized in that a time delay unit is provided in front of CLK2 of two-phase non-overlapping clock-generating circuit which can generate advance timing, the input of the time delay unit is connected with clock signals, the output thereof is connected with an input terminal CKL2 of an alternative denial gate; the time delay unit can be used to independently regulate the pulse duration of PH1 and PH2. When parameters meet the condition that TD is less than or equal to TD1+TD2, PH1 pulse duration of the clock is T / 2-TD2-TD, PH2 pulse duration of the clock is T / 2-TD2+TD; non-overlapping time between PH1 and PH2 is TD2; clock PH1E falls by TD2 earlier than PH1does, clock PH2E falls by TD2 earlier than PH2 does; when TD1 is equal to TD2, PH1E and PH1 can rise simultaneously, so do PH2E AND PH2. The circuit of the invention has the advantage that pulse duration, non-overlapping time and advance timing rising edge of the two-phase non-overlapping clock can be adjusted.

The invention discloses a signal phase duration calculation method for an unsplit vehicle queue at a signal point signal intersection under the vehicle-road cooperation environment based on intersection internal space rasterization. The method comprises the steps that the vehicle performs data and information exchange with surrounding vehicles and roadside facilities through vehicle-vehicle / vehicle-road communication under the vehicle-road cooperation environment, and the time used for passing through the intersection conflict point of the vehicle queue is calculated by using the obtained vehicle real-time position, driving speed, acceleration and other data through the technology of intersection internal space rasterization and acts as the calculation basis of signal control phase duration. According to the city single point signal intersection phase duration calculation method, the intersection internal space-time resources can be fully utilized so that the traffic operation efficiency of the intersection can be effectively enhanced, and all directions of vehicles can efficiently and orderly pass through the intersection without conflict.

A current driver capable of generating a controlled current in the form of a pulse-width modulation (PWM) signal suitable for controlling an electronic device such as a solenoid is disclosed. The current driver has a feedback loop incorporating a dual-slope integrator. During an integration phase, which has a duration of one or more PWM periods, the dual-slope integrator integrates a signal indicative of the current flowing through the device. During a de-integration phase, the time required for the integrated signal to discharge at a known rate is measured. The measured time and integration phase duration are used to determine average output current. Any error between the measured and desired average output current is corrected by way of a multiplicative corrective factor or an additive corrective factor. The integration and de-integration phases may occur during alternating PWM periods.

The invention discloses a power window switch anti-pinch system comprising a motor drive switch, a current monitoring circuit and a microprocessor. The motor drive switch is connected to a power supply loop of a window drive motor. The motor drive switch is switched on and off to control the window drive motor to forwardly rotate, stop rotating or reversely rotate. The current monitoring circuit is used for acquiring an operating current signal of the window drive motor. The microprocessor samples the operating current signal of the window drive motor after the motor drive switch starts to switch on. The microprocessor calibrates startup phase duration of the window drive motor, calculates to determine anti-pinch threshold current according to n operating current signal sampled values in the startup phase duration after the motor drive switch starts to switch on, and controls the motor drive switch to switch off when the operating current signal after the motor drive switch starts to switch on for a period exceeding the startup phase duration is larger than the anti-pinch threshold value. The power window switch anti-pinch system is satisfactory to pinch prevention under the set pressure and is low in cost.

The invention discloses a method for controlling traffic signals under the bi-direction and two-lane road maintenance construction situation. The method comprises the steps of traffic data collecting, whole-red phase duration calculating, period duration calculating, passing phase duration calculating and traffic signal controlling scheme implementing. According to the method, the traffic circulation character under the bi-direction and two-lane road maintenance construction situation is fully taken into consideration, and a signal control scheme is designed according to the bi-direction and two-lane road maintenance construction needs. A most common four-phase signal control scheme is adopted to give wayleave to bi-direction vehicles in sequence according to the signal control method of a city intersection. The method is very suitable for long-time bi-direction and two-lane road maintenance construction, convenient to calculate and actually operate, high in practicality and capable of improving the overall running efficiency of a traffic system under the bi-direction and two-lane road maintenance construction situation, and has very important practical significance.

The invention discloses an overflow early-warning method according to vehicle-passing data. Vehicle entering / exiting flow rates at different moments of an upstream and a downstream of a road segment are analyzed based on a phase sequence and phase duration of a signal control scheme, a road segment vehicle bearing capacity is analyzed based on a GIS (geographic information system) map, and a dataanalysis model is constructed based on a vehicle-passing information rule at the downstream of the road segment, and finally, the overflow risk quantization and early-warning are performed.

The invention discloses a self-adaptive adjusting circuit and a self-adaptive adjusting method for evaluation phase duration of an asynchronous SAR analog-to-digital converter. According to the invention, a clock edge comparator, a comparison phase time length adaptive control logic unit and a programmable control delay unit form a control loop, so that the evaluation phase time length of the SARanalog-to-digital converter is controlled. According to the invention, the time length of the evaluation phase of the asynchronous SAR analog-to-digital converter can be controlled to be close to a half of a clock period under all voltages, temperatures or process angles, adjustment is self-adaptive, the problem that the sampling time is insufficient due to the fact that the comparison time is toolong under a process angle SS is solved, and the problem that the establishment time of the digital-to-analog converter and the pre-amplifier is insufficient under a process angle FF is solved. In addition, the cost is extremely low, and the chip area is hardly increased.

The present invention provided a method for correcting the transfer error of an analog amplifier. The transfer error arises from the physical limit of the limited ability of the analog amplifier when following the jump of the amplifier input signal, which is induced by the switch. In a measuring device which includes at least one sensor and a signal processing unit connectting to the sensor and the analog amplifier, wherein, the signal processing unit comprises at least one modulator and / or a multiplexer, an analog amplifier, and at least one processing stage fllowing the analog amplifier value in electrical chain. Said processing stage separates from the amplifier according to the time point when the switch jump occurd, and by means of the switch which is arranged between the amplifier and the processing stage, during the predeterminate overtime phase duration. And the processing stage is controled by the time-out controller, and / or according to the time point when the switch jump occurd, said processing stage is blocked by the time-out controller during the predeterminate overtime phase duration.

The invention provides a planar crossroad signal control optimization method based on a vehicle queue length. By means of the method, the problem that currently only one traffic signal control optimization method is adopted and the crossroad real signal control optimization demands cannot be satisfied is solved. The method comprises the following steps of acquiring the start queue length lsij of each flow direction of a crossroad when a green light phase starts and the remaining queue length leij when the green light phase stops, wherein, the i is a signal phase sequence number and can be 1, 2, 3, 4, and j is the green light flow entry road direction inside the phase and can be E, W, S, N; (2) calculating the acceptable green time ratio Paij of each flow direction of the crossroad; (3) judging whether the crossroad requires phase congruency setting and determining the phase congruency duration if the crossroad requires phase congruency setting; (4) and optimizing the crossroad signal timing scheme according to the judgment result in the step (3).

The invention provides a system, a method and a device for determining traffic saturation, and relates to the field of traffic signal lamp control. The method includes acquiring vehicle occupation data in red lamp phase durations; determining demand traffic volumes of corresponding lanes of to-be-detected phase according to comparison results of occupation time of the vehicle occupation data and preset occupation time; determining the traffic saturation according to the demand traffic volumes of the corresponding lanes of the to-be-detected phase, saturation flow rates and timing information of signal periods to which the red lamp phase durations belong. The vehicle occupation data are transmitted by upstream detectors in the corresponding lanes of the to-be-detected phase. The traffic saturation corresponds to the to-be-detected phase. The system, the method and the device have the advantages that separate point detectors of the corresponding lanes of the to-be-detected phases and thetiming information of the signal periods corresponding to the to-be-detected phase are combined with one another, accordingly, the traffic demand volumes of the corresponding lanes of the to-be-detected phase can be accurately measured, and the computational accuracy of the traffic saturation can be improved.

A process for automatic control of a respirator changes between two phases of respiration by checking a detected respiratory breathing activity signal for a threshold criterion. If the threshold criterion is met, a changeover is made. A dynamic threshold curve, used for changing over into an inspiration phase, is held, after the beginning of the present expiration phase, at high values until the end of a selected inspiratory refractory period, and is then lowered monotonically, dropping to an inspiratory threshold target value at the expected point in time of the phase duration maximum of the present expiration phase. A dynamic threshold curve, which is held at low values, after the beginning of the present inspiration phase, until the end of a selected expiratory refractory period, is raised monotonically, increasing to an expiratory threshold target value at the expected point in time of the phase duration maximum of the present inspiration phase and is then changed over into the expiration phase when the breathing activity signal drops below the threshold curve for the expiration. The phase duration of the inspiration and expiration phases or breath duration (inspiration and expiration phases) is stored in each case, and the expected points in time of the phase duration maxima are derived from the distributions of the phase durations in relation to the beginning of the respective phase of respiration or from the distribution of the breath durations in relation to the beginning of the previous phase of respiration.

A method and system for processing Kalman Filter. The system includes: an Unscented Kalman Filter; and a processor device configured to: non-uniform a phase duration of a signal outputted from a plant; inputting the signal to the Unscented Kalman Filter; and restore non-uniformed phase duration of an estimated value calculated in the Unscented Kalman Filter to the phase duration.

A current driver capable of generating a controlled current in the form of a pulse-width modulation (PWM) signal suitable for controlling an electronic device such as a solenoid is disclosed. The current driver has a feedback loop incorporating a dual-slope integrator. During an integration phase, which has a duration of one or more PWM periods, the dual-slope integrator integrates a signal indicative of the current flowing through the device. During a de-integration phase, the time required for the integrated signal to discharge at a known rate is measured. The measured time and integration phase duration are used to determine average output current. Any error between the measured and desired average output current is corrected by way of a multiplicative corrective factor or an additive corrective factor. The integration and de-integration phases may occur during alternating PWM periods.

The invention discloses an intersection signal parameter optimization method based on Monte Carlo tree search and can optimize signal timing of an intersection of the urban road network in real time.The method specifically comprises steps that firstly, an candidate phase set and a performance function for each candidate phase are defined, and secondly, signal parameters within the optimized timewindow are continuously searched. Each search comprises (1), phase sampling; (2), traffic flow simulation; and (3), performance function update. Through several searches, based on the updated performance functions, the best performance of each candidate phase and the corresponding phase duration are obtained, and lastly, the best with the best phase performance and the corresponding phase durationare selected as the next phase scheme. The method is advantaged in that requirements for traffic flow models are not high, universality is strong, the phase schemes can be flexibly selected, and pre-setting of the phase and the phase sequence is not required.

The invention discloses a bus priority signal control system and a bus priority signal control method based on reversible lanes at an intersection, and the bus priority signal control system and the bus priority signal control method relate to the field of urban road traffic control. The bus priority signal control system is characterized in that: a reversible lane road indication board is arranged above a stop line at the front end of each reversible lane, an induction coil is arranged at the stop line at the front end of each reversible lane, a bus enter indication board and a vehicle counter are arranged at the tail end of each reversible lane, and each of four intersection signal controllers exchanges information with the reversible lane road indication board, the bus enter indication board, the vehicle counter and the induction coil on a corresponding crossing in a wireless manner; and a corresponding left-turning or straight-going bus enters a reversible lane through real-time signal control, a priority phase required by the bus is inserted timely by means of a main controller, so that the bus passes through the intersection preferentially, the phase duration is set reasonably and preferentially by combining with the counter according to the number of buses actually entering the reversible lane, an idle reverse lane is effectively utilized, and the lane utilization efficiency is improved.

A programmable cochlear implant system utilizes multiple-resolution current sources and flexible data-encoding scheme for transcutaneous transmission. In certain embodiments, the number of current sources may be equal to or greater than 2, but equal or less than N−1, where N is the number of electrodes. The multi-resolution current source may introduce offset currents to achieve perceptually-based multiple resolutions with high resolution at low amplitudes and low resolution at high amplitudes. The flexible data-encoding scheme may allow arbitrary waveforms in terms of phase polarity, phase duration, pseudo-analog-waveform, while producing high-rate and high-temporal-precision stimulation. In one embodiment, a 2-current-source system may support simultaneous and non-simultaneous stimulation as well as monopolar, bipolar, pseudo-tripolar, and tripolar electrode configurations.

One embodiment of the present invention facilitates efficient metering in a packet network environment by providing a single metering message, which contains sufficient information to provide the complete call tariff model for a particular call. The media gateway receiving the message can analyze the information provided in the message to determine how to provide metering pulses for all phases of the call, as well as any one-time charges, such as setup and add-on charges. Another embodiment of the invention provides a way for handling fractional pulse counts in an efficient manner. Yet another embodiment facilitates the handling of situations where charge intervals do not divide evenly into the phase duration of the phase associated with the call. In still another embodiment, the amount of information necessary to deliver the parameters of the call tariff model is minimized to reduce the overhead necessary for facilitating the metering process.

A terahertz time-domain spectrometer scanning sensor system includes a transmitter and a receiver that are secured to a mobile scanner head. Optical pump light, in the form of short pulses launched from a stationary laser located remotely from the scanner head, is delivered to the transmitter and receiver through a controlled fiber optic cable arrangement so that variations in temporal pulse relays that are associated fiber optic transmission are minimized. In this fashion, the movement of the fiber optic cable is maneuvered along a defined path so as to control the bends in the cable and thus minimize variations in temporal delays that can otherwise arise as the pulses of light are transmitted through the fiber. Pulses of laser light launched from the laser into the optical fiber will exit the cable with consistent (i) time of arrival, (ii) phase duration, and (iii) polarization state and energy.

The invention discloses a method for controlling traffic signals under the bi-direction and two-lane road maintenance construction situation. The method comprises the steps of traffic data collecting, whole-red phase duration calculating, period duration calculating, passing phase duration calculating and traffic signal controlling scheme implementing. According to the method, the traffic circulation character under the bi-direction and two-lane road maintenance construction situation is fully taken into consideration, and a signal control scheme is designed according to the bi-direction and two-lane road maintenance construction needs. A most common four-phase signal control scheme is adopted to give wayleave to bi-direction vehicles in sequence according to the signal control method of a city intersection. The method is very suitable for long-time bi-direction and two-lane road maintenance construction, convenient to calculate and actually operate, high in practicality and capable of improving the overall running efficiency of a traffic system under the bi-direction and two-lane road maintenance construction situation, and has very important practical significance.

The invention relates to a non-overlapping clock-generating circuit with independently regulated two-phase pulse duration, belonging to the field of non-overlapping clock-generating circuit. The circuit is characterized in that a time delay unit is provided in front of CLK2 of two-phase non-overlapping clock-generating circuit which can generate advance timing, the input of the time delay unit is connected with clock signals, the output thereof is connected with an input terminal CKL2 of an alternative denial gate; the time delay unit can be used to independently regulate the pulse duration of PH1 and PH2. When parameters satisfy the condition that TD is less than or equal to TD1+TD2, PH1 pulse duration of the clock is T / 2-TD2-TD, PH2 pulse duration of the clock is T / 2-TD2+TD; non-overlapping time between PH1 and PH2 is TD2; clock PH1E falls by TD2 earlier than PH1does, clock PH2E falls by TD2 earlier than PH2 does; when TD1 is equal to TD2, PH1E and PH1 can rise simultaneously, so do PH2E AND PH2. The circuit of the invention has the advantage that pulse duration, non-overlapping time and advance timing rising edge of the two-phase non-overlapping clock can be adjusted.

The invention belongs to the field of intelligent traffic systems, and particularly relates to a heuristic random searching traffic signal timing optimization method, aiming at solving the problems ofhigh complexity and long optimization time of the conventional traffic signal timing optimization method. The method comprises the steps of respectively superposing 2N exploration noises on the basis of a phase duration vector formed by a timing scheme of a road section to be optimized to obtain 2N performance indexes; obtaining N performance indexes through the selection of the optimal performance indexes and the negation operation of the corresponding exploration noise, and adjusting the phase duration vectorby using a preset adjustment algorithm based on the N performance indexes; repeatedly executing the above steps based on the adjusted phase time length vector until a preset iteration termination condition is reached, and outputting the phase duration vector obtained by the last iteration as optimization. According to the invention, the traffic intersection signal timing scheme can be optimized within an acceptable time range under the condition of limited computing resources,the robustness is good, and the implementation is strong.

An external defibrillator is described which maintains the durations of phases of a multiphasic shock waveform within or below desired limits. As the duration of a waveform increases for patients of increased patient impedance, the durations of the phases of a multiphasic shock waveform also increase. Before a maximum duration limit is exceeded, the defibrillator adds another phase to the multiphasic waveform which brings the durations of the phases within the desired range or below a maximum duration limit. Both the number of shock phases and the individual phase durations can be controlled in response to measured patient impedance.

The invention discloses general foliar fertilizer for horticultural flowers. The foliar fertilizer is prepared from components in parts by mass as follows: 4-8 parts of monopotassium phosphate, 3-6 parts of ammonium molybdate, 2-6 parts of potassium borate, 3-5 parts of humic acid, 5-10 parts of sodium bicarbonate, 4-6 parts of zinc sulfate, 5-7 parts of ferrous sulfate, 5-8 parts of a plant aminoacid preparation, 2-4 parts of ammonium nitrophenol, 1-3 parts of sodium EDTA and 150-250 parts of deionized water. With the adoption of the foliar fertilizer, growth quality of the horticultural flowers can be improved effectively, flowering phase duration is prolonged, the ornamental value is guaranteed, various effective components are adopted, application times are reduced, and labor resources are saved.