1204 results about "Current cycle" patented technology

A circuit is disclosed which minimizes the amount of tissue vaporized during a first half (positive half cycle) of an electrosurgical current cycle and minimizes the amount of current applied to tissue during a second half (negative half cycle) of the electrosurgical current cycle to control thermal spread. The circuit is preferably provided within an electrosurgical generator which is capable of controlling the amount of energy delivered to a patient during electrosurgery on a per arc basis.

Methods, devices and test kits for monitoring the ovulation cycle, involve testing the body fluid, e.g. urinary, concentration of one or more analytes. Preferably estrone-3-glucuronide and luteinizing hormone are both measured, and a reference concentration for E3G is established at about day 6 of the current cycle. Preferably, disposable testing devices are used, in conjunction with a relatively permanent electronic reader/monitor. The number of "daily" tests required per month can be minimized.

An object recognition system comprises a memory for storing a plurality of distance ranges with different distance labels associated with respective distance ranges. The controller converts measured distance values into distance labels according to distance ranges to which the distance values belong. The controller groups the sections or windows of a captured image based on assigned distance labels. Detection area or viewing area of the sensors is divided into a plurality of distance ranges according to tolerance of the measured distance such that broader distance range is defined as the distance from the system is larger. The controller scans the windows with distance labels using a template that defines a joining relationship for the windows and assigns each window with a cluster label that is a combination of the distance label and a occurrence indicia, which is the same for the windows that satisfy the joining relationship. The controller unites the windows having the same cluster labels into a cluster, generates three dimensional data of each of said clusters and combines the clusters that are positioned close to each other based on the three dimensional data to form a candidate of a physical object. The system includes a memory for storing three dimensional data of one or more physical objects that were recognized in previous recognition cycle. The controller infers a physical object which would be recognized in the current cycle based on the stored data and a speed of the vehicle relative to the physical object. The controller compares the inferred physical object with said candidate of a physical object to recognize a physical object.

The invention provides an air conditioner defrosting control method and an air conditioner. The method comprises the following step: after the current defrosting operation period of the air conditioner finishes, calculating and determining the heating operation time and defrosting time of the air conditioner of the next period on the basis of the indoor coil pipe temperature drop rate: when the indoor coil pipe temperature drop rate is high, controlling the heating operation time of the air conditioner of the next period to be less than or equal to the heating operation time of the air conditioner of the current period, and controlling the defrosting time of the next period to be greater than the defrosting time of the current period; and when the indoor coil pipe temperature drop rate is low, controlling the heating operation time of the air conditioner of the next period to be greater than the heating operation time of the air conditioner of the current period, and controlling the defrosting time of the next period to be less than or equal to the defrosting time of the current period. The heating operation time and defrosting time of the air conditioner of the next period are adjusted on the basis of the indoor coil pipe temperature drop rate when the operation of the current period finishes, thereby implementing dynamic adjustment on the heating and defrosting, and solving the technical problem of unclean defrosting or false defrosting when the defrosting is controlled on the basis of the indoor coil pipe temperature.

A control system for an electric machine having a rotor position sensor that generates a rotor position signal, a velocity module that generates an electric angular velocity value based on the rotor position signal, a random pulse width modulation module that generates a switching period and a delay for a current cycle, and a phase angle compensation module that sums a sample rate, one half of the switching period, and the delay of a previous cycle and that outputs a delay time. The phase angle compensation module further multiplies the delay time and the electric angular velocity value and generates a compensating angle.

A multiobjective management system for saturated traffic road networks comprising: green wave coordination of locally adaptive traffic control units, traffic movement optimization and live traffic route guidance. Current traffic congestion measurements on intersections are generated from local traffic cameras and remote air-borne conventional cameras and thermal sensing imaging cameras or satellite radar such as SAR/ISAR using optical image brightness analysis. At the first stage of traffic optimization, individual local intersection green times are computed based on current traffic congestion level. At the second stage optimization, the central traffic server uses a multiobjective approach to coordinate the current locally-optimized green times of the first stage and create input constraints for green-way coordination of plurality of traffic lights. The server updates dynamically current cycle start and green times on all network-connected traffic light controllers and also broadcasts recommended travel times, green times and green waves to all on-line client vehicle navigation units. Traffic server and individual client guidance units utilize novel time-dependent modifications of an A*-type algorithm to update current travel and recommended travel times and to execute fastest route searches.

In a method of recognizing and/or tracking objects which correspond to real objects in at least one sensing zone of at least one sensor for electromagnetic radiation on the basis of images of the sensing zone repeatedly sensed by means of the sensor, succeeding images are evaluated in succeeding cycles and a search is made for at least one respective object found in a cycle on the basis of a corresponding image in a correspondingly later image in a later cycle to track the object. At least one part of an earlier image and/or at least one indication with respect to an earlier state of the object or of a real object corresponding to it, which is determined using a corresponding earlier image in the current cycle, is associated with at least one part of a current image determined in the current cycle or with an object recognized in the current cycle during at least one current cycle on the basis of the results of an at least preliminary evaluation of a current image.

A method and apparatus to dynamically set the insertion point of a delay line control shift register based on the current cycle time. A string of delay elements equivalent to the delay elements in a delay lock loop (DLL) are laid out in the opposite direction compared to the DLL delay elements. Both strings of delay elements receive a synchronous input signal such as an external clock signal. The output clock signal of the DLL is phase-shifted relative to the external clock signal such that data removed from a device such as a synchronous dynamic random access memory (SDRAM) device is synchronous with the external clock signal. When a DLL reset command is issued, the information from the string of delay elements is captured and used to set the insertion point of the DLL to the locked or phase-equal point. This allows the DLL to quickly lock on any frequency upon reset of the DLL.

The invention discloses an output power-based diagnosis method for an open-circuit fault of an insulated gate bipolar transistor (IGBT) of a three-phase inverter. The method comprises the following steps of: A, respectively measuring three-phase voltages and three-phase currents by using a potential transformer (PT) and a current transformer (CT) installed on the output phase in the inverter, and respectively calculating the half-wave power corresponding to six half-wave currents of the three phases of the current period; and B, comparing the six half-wave power values with a set open-circuit fault power threshold value P0, if one or two half-wave power values are less than the set open-circuit fault power threshold value P0, judging that the corresponding IGBT causes an open-circuit fault; or if three half-wave power values are less than the set open-circuit fault power threshold value P0, judging that the IGBTs corresponding to the two half-wave power values on the same side cause the open-circuit fault. By the method, any one or two IGBTs which cause the open-circuit fault can be detected and positioned, so that a controller of the inverter can take a tolerance strategy and reduce waveform distortion conveniently; the inverter can be maintained in time; and the loss enlargement and accidents are avoided effectively.

A circuit to detect a movement of an object provides a threshold selection module or a peak identifier module that uses one or more threshold signals identified prior to a present cycle of magnetic field signal in order to establish a threshold signal used for a present cycle of the magnetic field signal. A method associated with the circuit is also described. The circuit and method can be tailored to store values associated with a least common multiple of a set of possible quantities of detectable features on target objects.

The invention discloses a method and a device for generating a warning message, and the device and the method are used for comprehensively monitoring a multi-dimensional and multi-index report form to reduce omission of the warning message and improve accuracy of the warning message. The method for generating the warning message comprises, for each monitoring index included in each dimensional group, performing the following steps: obtaining index data of the monitoring index in a present period according to a preset period; determining a monitoring index value of the monitoring index in the present period according to the index data of the monitoring index in a previous period and the obtained index data of the monitoring index in the present period; and, generating a first warning message corresponding to the monitoring index of the dimensional group when the determined monitoring index value is not in a monitoring threshold interval of the monitoring index in the present period. The monitoring threshold interval of the monitoring index in the present period is obtained according to the monitoring threshold interval of the monitoring index in the previous period and the monitoring index value of the monitoring index in the previous period.

The invention discloses a method and apparatus for transmission of multimedia data, and belongs to the communication technical field. The method comprises calculating a packet loss rate of multimedia data in a current cycle according to a data packet, transmitted in the current cycle, of the multimedia data and a response message received; improving acquisition parameters of the multimedia data if the packet loss rate is less than a first predetermined threshold value; reducing the acquisition parameters of the multimedia data if the packet loss rate is greater than a second predetermined threshold value which is greater than the first predetermined threshold value; and obtaining the multimedia data according to the adjusted acquisition parameters of the multimedia data, and transmitting the obtained multimedia data to a receiving terminal. According to the invention, the packet loss rate in the current cycle is calculated, the current state of a network is determined according to the relation between the packet loss rate and the predetermined threshold values, and the acquisition parameters of the multimedia data are improved or reduced in real time to adapt to the current state of the network so as to improve the transmission efficiency of the multimedia data.

A cellular phone that provides a display of the minutes used and/or remaining during a current cycle of a category of minutes provided in a calling plan. The display allows the user to immediately know if further use will incur additional fees beyond the monthly base fees. Additionally, A method for monitoring and displaying on a cellular phone the number of minutes used and/or remaining in a cellular phone calling plan. The method comprising the steps of: providing a cellular phone; inputting an initial start time for a repeating time cycle of a calling plan; inputting a time period for the repeating time cycle; providing a designated amount of time for a first category of time in the calling plan for the repeating time cycle; monitoring phone usage of the first category of time; and, displaying an indication of one of an amount of time used of the designated amount of time for the first category of time and an amount of time remaining of the designated amount of time for the first category of time in a current repeating time cycle.

The invention discloses a method for synchronizing the time of a wireless sensor network and belongs to the technical field of the wireless sensor network. The method comprises the following steps that: 1) a central node broadcasts synchronization information to a network at a specific time interval and starts a synchronization process; 2) after receiving the synchronization information, a sensornode synchronizes time with a source node of the synchronization information and broadcasts the synchronization information thereof to the network when a channel is free; and 3) after each synchronization process is completed, the sensor node predicts the working frequency of a crystal oscillator configured per se in the current period by a winters method and corrects the logic time thereof according to the prediction result till the start of the next synchronization process. Compared with the prior art, the method can greatly prolong the time interval of period synchronization and reduce synchronization expense and the occupying of a wireless channel and improve the synchronization precision among nodes.

The invention provides a method and device for detecting the overheat faults of GIS (Gas Insulated Switchgear) busbar joints. The method comprises the following steps of: establishing a function equation according to a relation among the shell temperature value, contact resistance value, load current value and environmental temperature value of a GIS busbar joint under typical bad contact conditions; carrying out regular polling according to a preset temperature polling cycle, measuring the shell temperature value, load current value and environmental temperature value of the GIS busbar joint in the current cycle, and according to the function equation, calculating the polling contact resistance value of the GIS busbar joint; and comparing the polling contact resistance value with a contact resistance value of the GIS busbar joint under normal contact conditions so as to judge whether a fault occurs. According to the method and device for detecting the overheat faults of GIS busbar joints, provided by the invention, a situation whether a fault occurs is judged according to the contact resistance, so that the overheat faults of GIS busbar joints can be detected more effectively, and an effect of ensuring the safe and stable operation of a power system can be facilitated.

The embodiment of the invention provides a method and a device for controlling an electronic expansion valve, relates to the field of air conditioners, and aims at realizing accurate control over opening of the electronic expansion valve under different working modes. The solution is applied to an air conditioner, and the air conditioner includes the electronic expansion valve used for throttling refrigerating fluid; the method comprises the following steps: according to a current working mode of the air conditioner, determining an opening threshold value of the electronic expansion valve; determining target opening of the current period of the electronic expansion valve according to the opening threshold value and opening of the electronic expansion valve within the previous period of the current period; and when the target opening is not less than minimum opening, determined according to exhaust temperature and/or suction pressure of a compressor in the air conditioner within the current period, of an opening interval of the electronic expansion valve, regulating the opening of the electronic expansion valve to the target opening. The method and the device provided by the invention are applied to the air conditioner.