35results about How to "Low update rate" patented technology

A building monitoring system is disclosed that includes a bi-directional radio link between a master and a number of remote units, wherein the master unit schedules the transmission times of the remote units to avoid collisions.

A system and method in which the position update rate is adaptively modified, based on previous position measurements. By adjusting the update rate based on velocity predictions from two or more position fixes, a lower update rate may be used without exceeding the maximum error. Lowering the update rate reduces power consumption in the UE, providing longer battery operation. The updating method may comprise periodically repeating the velocity prediction and periodically adjusting the update rate responsive thereto. The update rate may be adjusted using additional information such as an acceleration prediction, a minimum update rate, or a preferred error. In some embodiments a model for user movement may be used to provide more accurate predictions, for example, stationary, walking, jogging, city driving, and freeway driving. The updating method may comprise receiving user input regarding the maximum position error.

An echo detector correlates between an incoming signal an echo signal to determine echo delay. A preprocesssor extracts a characteristic pattern such as a binary pattern derived by thresholding an averaged power of each signal. This pattern is down sampled then used for the correlation, and delay is deduced from peaks in the correlation. Advantages include reduced computational load, or larger correlation window size, because the characteristic pattern is easier to correlate. The quantising can enhance the correlation peaks, and the averaging can limit the number of transitions, to give more robustness to noise. An echo canceller has a coarse echo delay estimator and a fine echo delay estimator. The coarse estimated delay is used to adjust a delay detection range of a fine delay detector having a narrow range. The output of the fine detector is used to adjust or suppress the adaptive echo canceller.

A system, including both an OLTP database and a warehouse database, that is configured to manage the coordination between the OLTP database and the warehouse database. An aspect relates to a combined OLTP and warehouse database which manages duplicate copies, in both the OLTP database and the warehouse database, of data expected to have a relatively high update and query rate. Data which has a low update and query rate is removed from the OLTP database, such that it remains only in the warehouse database. Updates of the duplicate copy data are performed in the OLTP. Periodically, for example every several minutes, data recently changed in the OLTP database is copied to the warehouse database. Queries are optionally primarily handled by the warehouse database, and are supplemented, when necessary, by data from the OLTP database.

A wireless sensor network comprises at least one sensor unit which comprises a sensor for sensing a parameter and at least one interrogating node. The interrogating node is arranged to transmit an interrogation message periodically to said sensor unit and to receive a reply message from said sensor unit. The sensor unit is arranged to transmit said reply message after a predetermined deliberate delay unless the sensor unit determines that an alarm condition has been met, in which case the sensor unit is arranged to transmit said reply message before the end of the deliberate delay.

A sinter powder containing a polyamide and metal soaps, in particular particles of a salt of an alkanemonocarboxylic acid. A process for laser sintering, and to moldings produced from the sinter powder. The moldings formed using the powder have advantages in appearance and in surface finish when recyclability in the selective laser sintering (SLS) process is taken into account. Moldings produced from recycled sinter powder have improved mechanical properties, in particular in the modulus of elasticity and tensile strain at break.

A motor drive circuit comprises a motor having a plurality of phases, a switching circuit comprising a plurality of electrical switches, a motor current controller that generates voltage demand signals to be passed to a drive circuit for the switches that in turn generate pulse width modulated switching signals for the switching circuit that cause the switches to selectively connect the phases to a power supply so as to cause current to flow through the phases of the motor, and a motor torque controller that produces a demand signal that is fed to an input of the current controller, the motor current controller responding to an error signal that is at least partially dependent on the value of the demand signal. The torque controller in use updates the demand signal at a first sample rate. The motor drive circuit further comprises a downsampling circuit that in use modifies the demand signal under certain operating conditions so that the demand signal is only updated at a second sample rate that is lower than the first rate.

A method for training a machine learning model for determining a quality grade of data sets from each of a plurality of sensors. The sensors are configured to generate surroundings representations. The method includes: providing data sets of each of the sensors from corresponding surroundings representations; providing attribute data of ground truth objects of the surroundings representations; determining a quality grade of the respective data set of each of the sensors using a metric, the metric comparing at least one variable, which is determined using the respective data set, with at least one attribute datum of at least one associated ground truth object of the surroundings representation; and training the machine learning model using the data sets of each of the sensors and the respectively assigned determined quality grades.

The invention relates to an oscilloscope capable of rotating to display a picture. The oscilloscope comprises a data collecting unit, a sketch processing unit, a central processing unit and a touch display unit. The data collecting unit is used for an external signal to be input and for processing the input signal into a set of digital waveform data, the sketch processing unit is connected with the central processing unit and the data collecting unit and provided with a waveform processing unit, the waveform processing unit is controlled by the central processing unit to enable one of a first coordinate waveform processing module and a second coordinate waveform processing module, the digital waveform data are processed to obtain a waveform display interface corresponding to a first coordinate or a second coordinate, and displaying is achieved through the touch display unit. Accordingly, when the waveform display interface switches the coordinates and rotates, the first coordinate waveform processing module and the second coordinate waveform processing module can be switched through a hardware circuit to achieve the purpose, the coordinate transformation operation of software is not needed, and the updating rate is improved.

A system and method for online simulation of a controlled machine or process utilizes a simplified model of the system dynamics and may be used with hardware in the loop to evaluate performance of the controlled system or with software in the loop to perform commissioning of the control program prior to completion of the mechanical installation. The simplified model includes dominant order dynamics of the controlled system such as the inertia of the system and a damping factor. Further, the online simulation is scheduled to execute at an update rate slower than the update rate of the control loops within the motor drive. The simplified model and reduced update rate reduce the computational burden on the processor such that the simulation may be performed either on the industrial controller or on the motor drive.

A system and method for measuring frequency which reduces the impact of noise. The system and method includes the steps of sampling a signal train over a first signal portion of the signal train, determining a first average period for the first signal portion (t1) of the signal train, sampling the signal train over a second signal portion (t2) of the signal train, wherein, the second portion of the signal train overlaps with the first signal portion, determining a second average period for the second signal portion (t2) of the output signal train, and then determining the average of the determined average periods.

The invention belongs to the technical field of feeds, and particularly relates to a compound feed for improving reproductive performance of lactating sows. The compound feed comprises the following components: corn, extruded corn, wood fiber, soybean oil, extruded soybean, fermented soybean meal, Peru fish meal, L-lysine hydrochloride, DL-methionine, L-threonine, glutamine, sodium chloride, calcium carbonate, calcium dihydrogen phosphate, 60% choline chloride, saccharomyces cerevisiae cell wall, ethoxyquinoline, a compound enzyme preparation, bacillus licheniformis, bacillus subtilis, sow compound vitamins and sow compound mineral elements. The feed provided by the invention can improve the milk yield of sows, the daily gain and weaning weight of piglets, and improve the reproductive performance of sows and the growth performance of piglets; the feed effectively prevents constipation of lactating sows, reduces death caused by clostridium perfringens, and reduces the renewal rate of sows; and the high protein and high energy design achieves the effects of protecting sows and prolonging the service life of sows, and improves production benefits.

A multiplication or division operation X·K or X·1/K is performed in an electronic circuit. A software circuit area of the circuit calculates a digit shift sv such that p^sv is an approximate value for K. In a hardware circuit area, the value X is shifted sv digits to the left in the case of multiplication or sv digits to the right in the case of division. The software circuit area calculates a suitable correction factor Kf. The value X is multiplied by the correction factor Kf.

The invention discloses an underwater target positioning method based on a probability graph model, belongs to the technical field of underwater positioning, and aims to solve the problem that a high-precision underwater target position cannot be obtained when beacons are sparse and the information updating rate is low in the prior art. The method comprises the following steps: obtaining all distance data and speed data of a single target in a period of time under a sparse condition, taking the distance data and the speed data as local variables respectively, and representing global joint probability distribution of each local variable by adopting a factor graph to obtain a global function; carrying out complementation and calculation on the global function, solving an edge function, and obtaining a position estimation value of the target at each moment; and calculating an edge function by adopting a sum product algorithm, solving an edge probability function of each local variable in joint distribution, and obtaining target estimation results at different moments. The method is used for accurately positioning the underwater target.

A method for classifying objects in the surroundings of a vehicle using ultrasonic sensors which emit ultrasonic pulses and receive ultrasonic echoes reflected by objects. Distances between the sensors and objects reflecting ultrasonic pulses are ascertained via at least two ultrasonic sensors including overlapping fields of vision, and a position determination of the reflecting objects taking place using lateration and the assignment of the received ultrasonic echoes to object hypotheses for distinguishing between extensive objects and point-like objects. A height classification of a point-like object represented by an object hypothesis is carried out, based on an update rate of the object hypothesis, a stability of the position of the object represented by the object hypothesis, the amplitude of the ultrasonic echoes assigned to the object hypothesis, and a likelihood of the ultrasonic sensors receiving an ultrasonic echo from the object which is represented by the object hypothesis, as classification parameters.