41 results about "Period timing" patented technology

In a switching power supply device which intermittently executes a switching operation, a power loss which occurs in resumption of the switching operation is reduced. A semiconductor device works as a control circuit for the switching power supply device, and includes: an intermittent oscillation control circuit which alternately gives an instruction for execution and suspension of the switching operation of a switching element; a bottom detecting circuit which detects a bottom of a ringing voltage that develops when the switching element is OFF; a bottom-monitoring time period timing circuit which times a bottom-monitoring time period starting as soon as the instruction for the execution of the switching operation is given; and a turn-on control circuit which turns ON, before the timing of the bottom-monitoring time period ends, the switching element only when the bottom of the ringing voltage is detected.

The invention relates to a timing appointment method of an air conditioner, which comprises a common timing mode, a continuous period timing mode and / or an intermittent period timing mode, wherein the continuous period timing mode or the intermittent period timing mode comprises the following steps of: (1) judging whether a timing signal is input or not, if the timing signal is input, executing the step (2), and if no timing signal is input, executing other program modules or starting a low power consumption mode; (2) setting a timing time and a timing way, and defining a processing timer in the CPU (Central Processing Unit) of a remote controller; (3) sending the timing signal; (4) judging whether the difference between the current time and the set time is an integral hour point or not or the difference between the current time and the timing time is an integral hour number point or not, and if the difference is the integral hour point, automatically sending the timing signal by the remote controller to the host of the air conditioner to calibrate and adjust the time of the host of the air conditioner; (5) judging whether the current time is half an hour earlier than the preset time or not, and if the current time is half an hour earlier than the preset time, automatically sending the timing signal by the remote controller to the host of the air conditioner; and (6) executing the timing action by the air conditioner. The invention can determine the on / off time and period of the air conditioner by the timing appointment signal which is input according to the requirements of a user, can meet different requirements of the user, and has comprehensive functions.

A current sharing control method for parallel intelligent rectifier bridges is disclosed and applied to current sharing and rectification operation for a plurality of parallel three-phase silicon controlled intelligent rectifier bridges. Each intelligent rectifier bridge sends sampling data of a previous power frequency period to an adjusting device after receiving a zero-crossing synchronization signal, the adjusting device sets synchronization period timing after receiving first sampling data, and the synchronization period is limited to be less than one half of a power frequency period; in a set synchronization period, as for all the intelligent rectifier bridges, the adjusting device receives sampling data before replying control data for next power frequency periods corresponding to the intelligent rectifier bridges in a one-by-one manner, and each intelligent rectifier bridge sends sampling data only once in one power frequency period. Via adoption of the current sharing control method output currents of the parallel intelligent rectifier bridges can be equalized in an accurate manner, and a possible problem that various output pulses are not synchronous in parallel intelligent rectifier bridges can be effectively prevented. System operational reliability can be substantially raised.

The present invention provides a gear fault detection method on the basis of multi-position turning angle signals of encoders. The gear fault detection method on the basis of multi-position turning angle signals of encoders comprises the following steps: axial angle encoders are installed at the power input end and the power output end of a gear case; turning angle signals of the axial angle encoders are collected by the encoders at the input shaft end and the output shaft of the gear case; the turning angle signals are processed and reference points of square wave periods in the signals are searched, the period timing length of each square wave in the signals are counted, the period fluctuation time series are reconstructed according to the number of periods of each square wave, and frequency spectrums of the period variation time series signals; and finally, characteristic frequency components of fault gears are calculated according to the rotating speed of the input shaft and the design structure of the gear case, and when fault characteristic components and high order harmonic components thereof are existed in the frequency spectrum, it is determined that flex cracking or an abnormal failure of the gear case happens. The gear fault detection method on the basis of multi-position turning angle signals of encoders has high recognition rate of operation failures of a gear, and contributes to rapidly and accurately determining the operating state of a gear case.

The invention relates to an idling stop control device of a vehicle. The control device starts an execution of a decompression control at an engine-speed-decreasing-period timing within an engine-speed-decreasing period when an inclination gradient is a downward slope gradient smaller than a predetermined gradient. The period corresponds to a period between a timing when the engine speed reaches a peak engine speed after the engine speed exceeds a complete explosion engine speed after the execution of the engine restart process is started and a timing when the engine speed decreases to a stable idling engine speed. On the other hand, the control device starts the execution of the decompression control at a complete-explosion-achievement timing when the inclination gradient is a downward slope gradient equal to or larger than the predetermined gradient.

An imaging system (100) includes a stationary gantry (102), a rotating gantry (104), a radiation source (110), and a detector array (112). The detector array detects radiation for a plurality of integration periods during a rotating gantry revolution, the plurality of integration periods corresponds to different angular position ranges, and the detector array generates a signal indicative of the detected radiation respectively for the plurality of integration periods. The system further includes an integration period controller (118) that generates an integration period timing signal that includes timing for a start of each of the integration periods for a revolution of the rotating gantry based at least on a time duration of a previous revolution of the rotating gantry around the examination region, wherein the integration timing signal is used trigger the plurality of integration periods.

The invention relates to a power management device and method. The device comprises a power interface connected with a power source, an upper computer interface connected with an upper computer, a power supply interface connected with communication single plates of an automatic circuit test device and a single-chip microcomputer connected with the power supply interface; the single-chip microcomputer comprises a real-time clock module, a storage device and a CPU, wherein the CPU downloads timing starting and stopping information of the automatic circuit test device from the upper computer through the upper computer interface and stores the timing starting and stopping information in the storage device, the CPU is waken up when the real-time clock module determines that the starting time is up according to the real-time clock and the stored timing starting and stopping information, the CPU is triggered to be stopped when it is determined that the stopping time is up, and the CPU supplies power to the communication single plates of the automatic circuit test device through the power supply interface after work is done. By means of the power management device and method, the function of conducting multi-time-period timing starting / stopping to supply power to the automatic circuit test device can be achieved; meanwhile, when the device is in the standby state, ultra-low power dissipation is achieved, and the device cost is reduced.

The invention provides a timing method and device. The method includes the following steps that when a program starts to run, whether a timer function is contained in the program is detected in real time; when it is detected that the timer function is contained in the program, according to the type parameter carried by the timer function, the timing type to which a current timing task belongs is determined; according to the timing parameter carried by the timer function, the current task is executed by adopting a timing mode corresponding to the timing type. According to the timing method and device, common Android timers are divided into two timing types, namely a short-period timing type and a long-period timing type; developers do not need to master the use methods of various timers, just need to make it clear whether the short-period timing or the long-period timing is needed, and then well set the type parameter and timing parameter of the timer function; when the program starts to run, the timing type is automatically determined according to the type parameter of the timer function, the timing mode corresponding to the timing type is adopted, the use of the timer is simplified for the developers, the complexity of application development is reduced, and the difficulty of program maintenance is reduced.

The invention discloses a secondary side synchronous rectification controller circuit capable of adaptively driving voltage regulation period by period, and the secondary side synchronous rectification controller circuit is mainly applied to a flyback switching power supply system. The time of each switch period is recorded by a period-by-period timing module; based on the average time and the change tendency of the first N periods, the opening time node of a first MOS transistor in the next period is automatically estimated, and therefore a second MOS transistor of the secondary side is accurately switched off before the first MOS transistor is started; when the current of the secondary side loop is reduced to zero or before the first MOS transistor is switched on, the amplitude of the driving voltage is reduced by an adaptive driving voltage adjustment module, and then the second MOS transistor is quickly switched off, so as to ensure that the flyback switching power supply system does not generate the risk that the primary side and the secondary side are conducted at the same time in any working mode; and meanwhile, the conversion efficiency of the system is improved to the maximum extent.

The invention discloses a fault judgment system for an intelligent power grid, and belongs to the technical field of power grid data collection processing. The data flow reduction degree is high; dataflow of a fault point after data reduction is difficultly lost; and current sensors at nodes of the power grid can be enabled to collect data in a same time section. The system comprises a server arranged in a power grid monitoring center, and a controller, a data processing module, a humidity sensor, a temperature sensor, a wind velocity sensor, a current sensor, a season time period timing module, a peak valley electricity time period timing module, a satellite time corrector and a clock control chip arranged at the nodes of the power grid, and a constant temperature protection mechanism for providing constant temperature protection for the current sensor; and the control ends of the server, the data processing module, the humidity sensor, the temperature sensor, the wind velocity sensor, the current sensor, the season time period timing module, the peak valley electricity time period timing module, the satellite time corrector, the clock control chip and the constant temperature protection mechanism are connected with the controller.

The invention discloses a method for triggering an automatic retransmission request state report, which is applied to a communication system adopting an automatic retransmission request mechanism. The method comprises the following steps: configuring a variable period timing rule of a periodic state report timer for an entity of a wireless link control layer in an acknowledge mode on a receiving end and setting initial timing time of the periodic state report timer through a high-level protocol layer; receiving protocol data units of the wireless link control layer, and triggering the automatic retransmission request state report when the timing time of the periodic state report timer arrives; and calculating the timing time according to the variable period timing rule of the periodic state report timer, restarting the periodic state report timer, and continuously receiving the protocol data units of the wireless link control layer. The method not only guarantees higher data transmission reliability but also can adjust the triggering period of the ARQ state report in a self-adapting mode according to the actual data receiving speed by adoption of the variable period ARQ state report.

An appointment scheduling method and associated user interface wherein an overview of appointments of a patient, an overview of the agendas of involved resources and details on an instantiated appointment are displayed on a single screen permitting verification and confirmation of an instantiated appointment by the user.

A set of linked lists of time segments represent the actions of resources that are input of a time scheduling system. A system and method are described that operate on said linked list and that produce a solution that meets the constraints imposed by the actions of said resources. The method is described in the context of appointment scheduling systems for medical institutions, where appointments need to be scheduled for patients, taking into account a multitude of constraints such as the availability of staff, equipment, facilities and of the patient himself .

A missle-borne embedded control software period time consumption real time calculating method comprising the following steps: building a control software operation period timing interruption step variable timer, a software period time consumption precision timing interruption step variable timer_1 and a software period time consumption assignment variable time_run, setting and enabling control software operation period timing interruption functions in sequence, thus resetting the timer in the interruption functions; setting and enabling a software period time consumption precision timing interruption function, thus accumulating numbers for the timer_1 in the interruption functions; recording a software period time consumption initial timer_1 value and a software period time consumption termination timer_1 value in a main program, and allowing the difference value of two recorded values to multiply with a time consuming coefficient so as to obtain the present period program time consumption time, and thus effectively and accurately calculating the control software period time consumption in real time; the missle-borne embedded control software period time consumption real time calculating method is flexible and easy in use, high in versatility, good in expansibility and high in reliability.

The invention discloses an intelligent distribution network system based on cloud computing, belongs to the technical field of power grids, and can accurately calculate the current of power grid nodesby combining the total current and the partial current, and enable a current sensor at each node of the power grid to acquire data in a same time section. The intelligent distribution network systemcomprises a monitoring server arranged at a power grid monitoring center, and a controller, a data processing module, a humidity sensor, a temperature sensor, a wind speed sensor, a current sensor, aseason period timing module, a peak-valley electricity period timing module, a satellite timing device, a clock control chip and a constant-temperature protection mechanism for providing constant-temperature protection for the current sensor which are respectively arranged at the power grid nodes; and the monitoring server, the data processing module, the humidity sensor, the temperature sensor, the wind speed sensor, the current sensor, the season period timing module, the peak-valley electricity period timing module, the satellite timing device, the clock control chip and a control end of the constant-temperature protection mechanism are respectively connected with the controller.

The invention provides a handoff parameter self-optimization method in a mobile communication system. The method comprises the following steps of: 1) within a handoff performance statistic period T, detecting a late handoff, an early handoff, a handoff to a mistaken cell, a ping-pang handoff and a fast handoff between neighbor cells, and performing statistic of the occurrence times and the handoff times; 2) calculating values of five handoff key performance indicators (KPI) after finishing the statistic period timing; 3) comparing the statistic values of five handoff KPIs with the corresponding target value and judging whether the statistic values are in accordance with the adjustment condition of the handoff parameter, if so, shifting to step four, otherwise shifting to step one; 4) calculating the adjustment amount delta Hlate, ij, delta Tlate, ij, delta Hearly, wrong, ij, delta Tearly, wrong, ij, delta Hpingpang, fast, ij, delta Tpingpang, fast, ij of the handoff parameter Hysij and TTTij; 5) calculating values of the Hsyij and TTTij of the next statistic period; and 6) shifting to step one, performing the handoff performance statistic of the next period. The method enables thehandoff to adapt to the change of the network environment more flexibly, improves the handoff performance and reduces the manual intervention, thereby reducing the network operational expenses greatly.

The invention provides an electric knife system based on biological signal control. The electric knife system is provided with an electric knife system control loop and comprises an electroencephalogram signal acquisition module and an R wave identification and triggering circuit, wherein the electroencephalogram signal acquisition module comprises a passive linear network, a right leg drive circuit and an analog-digital converter, and the R wave identification and triggering circuit is provided with an R wave identification and triggering program, an R-R period timing program and an electroencephalogram signal starting electric knife control program. By virtue of the design principle of synchronizing triggering and starting the electric knife system by virtue of a body surface electroencephalogram R wave, an electric knife is only triggered and started by the R wave and then enters a ventricular refractory period (VRP) of a pacemaker, if interference occurs, the VRP can be continuously restarted, a noise reversing (NR) function of the pacemaker can be triggered, the pacing impulse is not inhibited, so that the electric knife is prevented from being started and used randomly, and the electric knife system stays at a ventricular alertness period, inhibits the release risk of the ventricular pacing pulse, and has a beneficial effect of improving the medical intelligent control and the safety.

The invention provides a timed task processing method and a timed task processing device. The timed task processing method comprises the steps of obtaining a timed task demand in at least one time period; determining a basic task time interval according to the time period timing task demand; configuring a basic timing task according to the basic task time interval; and triggering the time period timing task according to the basic timing task and the time period timing task demand. A time period timing task of an application is reduced to a basic timing task, a large amount of parameter configuration time is reduced. Meanwhile, the number of tasks in a task scheduling system is reduced, resources of the task scheduling system are saved, configuration is simple, later maintenance and expansion are facilitated, and manpower resources are saved.

There is provided a method, comprising: detecting, by a node of a first wireless network, that at least one overlapping second wireless network is configured to apply contention periods and contention-free periods for communicating with different subsets of devices; detecting that a contention period timing applied by the at least one overlapping second wireless network is not aligned with a contention period timing applied by the node of the first wireless network; and causing a modification of the contention period timing in at least one of the wireless networks in order to have the contention periods to take place at least partly at the same time in each overlapping wireless network.

The invention discloses a CELL_FACH flow control method in an HSPA+ system. A length TFC_period of a period timer is preconfigured. The length TFC_period of the period timer is a flow control period. An end moment of the each flow control period is a period flow control point. The method comprises the following steps that: each subframe determines whether the period timer is expired; if the period timer is expired, a period timing triggering mode is used to perform the flow control of an Iub port; otherwise, a specific event triggering mode is used to perform the flow control of the Iub port. In the invention, aiming at the flow control of the Iub port in a CELL_FACH state, a complete solution scheme is provided. And by using the method of the invention, the flow of the Iub port under the CELL_FACH state in the HSPA+ system can be controlled.

The invention discloses a method and a system for detecting falls and sudden changes of heartbeat based on indoor positioning, and belongs to the technical field of family personnel monitoring. First, establish a wristband detection system, install a plurality of indoor base stations, and the guardian wears the wristband; the guardian's mobile phone APP; the detection method includes the following steps: the wristband sends the guardian's status message to the base station with a default period, and the base station receives the message. Then send the message to the public network server; after receiving the message from the base station, the public network server records the location and time information, deletes outdated and invalid data, and analyzes the heart rate and fall information at the same time; the public network server collects the analyzed emergency data It will be pushed to the guardian's mobile APP, and the guardian's mobile APP can also query the activity track of the ward at home. The public network server of the present invention analyzes according to the uploaded historical data, and combines the heartbeat mutation data to determine whether the ward really falls, so as to minimize the misjudgment rate.

The invention relates to a channel gate system and belongs to the technical field of channel gates. Intelligent opening and closing of gates can be realized. The system comprises a transverse gatewayand a gate; a first infrared emitter and a first infrared receiver are respectively symmetrically arranged on the two inner side walls of the transverse gateway along the length direction level of thetransverse gateway. The gate opening and closing method comprises the following steps: S1: judging a moving path of a person; S2: according to the moving path, judging whether the person moves to theother end of the gate from one end of the gate or not within a first time period timing from initial entering of the transverse gateway; and S3: when the spaced first infrared receivers do not receive a first infrared signal and the first infrared receiver between the spaced first infrared receivers receives the first infrared signal, judging two persons exist and according to the moving paths ofthe two persons, judging whether the two persons move to the other end of the gate from one end of the gate or not within the first time period timing from initial entering of the transverse gateway.

A symmetry control circuit for a trailing edge phase control dimmer circuit for controlling alternating current (AC) power to a load, the symmetry control circuit including: a bias signal generator circuit configured to monitor non-conduction periods of each half cycle of said AC power for an elapsed duration of the non-conduction periods, and generate a bias signal voltage based on the elapsed duration, whereby an amplitude of the bias signal voltage is proportional to the elapsed duration of the non-conduction periods; and a bias signal converter circuit configured to convert the bias signal voltage to a bias signal current, wherein the bias signal current is added to a reference current of a conduction period timing circuit configured to determine said conduction periods, and wherein the conduction period timing circuit is configured to alter one of the conduction periods immediately following one of the non-conduction periods based on the bias signal current when added to the reference current to compensate for a phase shift of a zero-crossing of said one of the non-conduction periods corresponding to an elapsed duration of said one of the non-conduction periods so as to restore symmetry of the non-conduction periods of each half cycle of AC power.

The invention discloses a method for triggering an automatic repeat request status report, which is applied to a communication system adopting an automatic repeat request mechanism, comprising the following steps: a high-level protocol layer configures a periodic state for a radio link control layer entity in confirmation mode at a receiving end Report the variable cycle timing rules of the timer, and set its initial timing time; receive the radio link control layer protocol data unit, and when it reaches the timing time of the periodic status report timer, trigger the automatic retransmission request status report; according to the periodic status report The variable-period timing rule of the timer calculates the timing time, restarts the periodic status report timer, and continues to receive the radio link control layer protocol data unit. By adopting the variable-period ARQ status report, not only high data transmission reliability is guaranteed, but also the triggering period of the ARQ status report can be adaptively adjusted according to the actual data receiving rate.

A symmetry control circuit for a trailing edge phase control dimmer circuit for controlling alternating current (AC) power to a load, the symmetry control circuit including: a bias signal generator circuit configured to monitor non-conduction periods of each half cycle of said AC power for an elapsed duration of the non-conduction periods, and generate a bias signal voltage based on the elapsed duration, whereby an amplitude of the bias signal voltage is proportional to the elapsed duration of the non-conduction periods; and a bias signal converter circuit configured to convert the bias signal voltage to a bias signal current, wherein the bias signal current is added to a reference current of a conduction period timing circuit configured to determine said conduction periods, and wherein the conduction period timing circuit is configured to alter one of the conduction periods immediately following one of the non-conduction periods based on the bias signal current when added to the reference current to compensate for a phase shift of a zero-crossing of said one of the non-conduction periods corresponding to an elapsed duration of said one of the non-conduction periods so as to restore symmetry of the non-conduction periods of each half cycle of AC power.

The invention discloses a quick clock synchronization method for an EtherCAT master station control system. The quick clock synchronization method includes the steps: realizing quick clock synchronization by means of a clock frequency following method; setting a fixed period timing thread and a changeable period timing thread, and respectively processing the aperiodic data and the periodic data; and completing the clock frequency following function by changing the period of the changeable period timing thread. The quick clock synchronization method realizes synchronization of an EtherCAT master station and a reference clock, and can avoid the packet loss problem caused by clock asynchronization. The quick clock synchronization method utilizes the frequency following method to realize quick clock synchronization, avoids the influence of overlarge overshoot and uncertainty of settling time in the other clock synchronization methods on system performance, and can accurately and quickly track the operation frequency of the reference clock. The quick clock synchronization method utilizes the method of changing the operation frequency of the master station clock to realize clock synchronization, avoids time loss caused replacement of moment, and can guarantee stable operation of the system.