41 results about "Period timing" patented technology

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.

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 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 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 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 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 relates to a period timing type safety touch screen password access control lock. On the basis of a present password lock structure, an intelligent high-precision timing non-water cleaning type mechanism is introduced; on the basis of a timing process of a designed timing circuit (11), a designed miniature fan (6) and an electric heating plate (7) are combined with lower air vents (10) designed at the bottom edge of embedded frame of a password touch screen (9), for performing hot air blowing operation on the password touch screen (9), so that the mist coverage for the surface of the password touch screen (9) can be realized; a designed electric control stretchable rod (2) is controlled; a windscreen wiper strip (8) is moved on the surface of the password touch screen (9), so that the mist covered on the surface of the password touch screen (9) is removed; the operation is periodically repeated, so that the fingerprints remained on the surface of the password touch screen (9) can be cleaned; the potential safety hazard caused by the fingerprint residue can be effectively avoided and the use safety of the password lock can be promoted.

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.