53 results about "Intervalometer" patented technology

The invention discloses an Internet of Things environment control method and device based on context-aware. The method comprises the following steps: an environment control device in a network collects context-aware data to judge whether people are in a controlled zone or not; if people are in the controlled zone, the environment control device ensures that an intervalometer resets to a set time, humiture is processed by treating forecast average vote numbers as a PMV value, and then correspondence of the data is performed according to a set value table, a comfort degree mapping table and a control rule mapping table to obtain a control strategy of a controlled terminal; if people are not in the controlled zone, the environment control device detects whether a working controlled terminal exists or not, if no, no operation is carried out; if yes, the turning on or the turning off of the intervalometer is judged, if the intervalometer is turned off, the turning on of the intervalometer is performed, and when the intervalometer returns to zero, a control command is transmitted to close the working controlled terminal, if the intervalometer is turned on, countdown is performed continuously until the intervalometer returns to zero, or the controlled zone is detected again to ensure that whether people are in or not. The method and the device, provided by the invention, can realize intelligently real-time control of the controlled terminal to adjust the environment so as to meet comfort degree requirements of users.

The invention relates to a system and a method for measuring droplet evaporation rate. The system comprises an image acquisition module, an image processing module and an evaporation rate computation module, wherein the image acquisition module comprises a CCD camera and an image acquisition card, the CCD camera is used for monitoring and shooting droplets and transmitting captured PAL analog video streams to an image acquisition card, and the image acquisition card is used for decoding and synchronously separating the PAL analog video streams and then transmitting digital droplet image signals to the image processing module; the image processing module is used for analyzing the digital droplet image signals of single-frame images captured at a time interval of delta t to obtain the contour line of droplet images at the moment of t and transmit the contour line to the evaporation rate computation module; and the evaporation rate computation module utilizes an intervalometer to compute the evaporate rate of the droplets in unit area and unit time. The invention combines the characteristics of image processing and simultaneously utilizes the strong data-handling capacity of a DSP, thus being capable of giving the evaporate rate of the droplets at a certain moment in real time.

This invention belongs to instruments for distance measurement (rangefinders). The proposed laser rangefinder contains, serially connected, pulse laser with an optical system, a pulse amplifier and a regulated pulse generator; also, serially connected, a photoreceiver based on an avalanche photodiode with an optical system (conjugate to that of the laser), an amplifier of photo-detected signals, comparator, time-interval meter, and an object detection indicator. This rangefinder is unique in that the pulse amplifier features an additional output, connected to which is a second laser with an optical system (conjugate to that of the first laser and avalanche photodiode); and an additional second input connected to the first input of the pulse amplifier, to the first output of the regulated pulse generator and to the first input of the time-interval meter.

The invention discloses a device for detecting residual amount of hot water in an electric water heater and a time correcting method, wherein the time correcting method for detecting the residual amount of the hot water in the electric water heater comprises the following steps: S1, presetting an initial time interval of each temperature range in a plurality of temperature ranges; S2, detecting the actual water temperature of the electric water heater in time under the water consuming state; S3, recording actual time intervals of two time points when detecting that temperature values of actual water temperature at two time points are as same as that of two temperature endpoints in one temperature range; S4, calculating an average value of a plurality of actual time intervals corresponding to the same temperature range; S5, correcting the initial time interval of the corresponding time range by taking the average value as a correcting parameter. The time correcting method for detecting the residual amount of the hot water in the electric water heater disclosed by the embodiment of the invention can be used for self-adaptively correcting the time parameter of the residual amount of hot water, thereby improving the accuracy of the detection result of the residual amount of the hot water.

This invention discloses a method for preventing the transmitting buffer of the wireless links controlling layer overflowing, wherein the transmitting buffer is used for storing the SDU. The method comprises the following steps: A) the wireless links controlling layer will get the maximum buffer time T1 of every SDU which is transmitted by the upper layer, and get the receiving time of said SDU T2; storing to the transmitting buffer according to the receiving order of SDU; B: after a presetting cycle, according to the maximum buffer time and receiving time, the RLC will test the SDU which is stored in the transmitting buffer, and deserting the overdue SDU. Said invention decreases the intervalometer numbers used by the RLC greatly; and it only need to compute and compare some SDU in the transmitting buffer to desert the overdue SDU.

The invention discloses a log storage method, device and apparatus and a readable storage medium. The method disclosed by the invention comprises the steps of obtaining a storage request of target loginformation; extracting identification information of the target log information and a preset time interval from the storage request; calculating the actual time interval between the previous log information corresponding to the identification information and the target log information; judging whether the actual time interval is greater than a preset time interval; if yes, storing the target loginformation; and if not, filtering the target log information. The log waterfall problem can be prevented, the storage space of the storage log is saved, the loss of effective log information can beavoided, the comprehensiveness of the system log is guaranteed, and a reliable basis is provided for fault problem positioning. Correspondingly, the log storage device and equipment and the readable storage medium disclosed by the invention also have the above technical effects.

The embodiment of the invention provides a processing device and method for tracking loop errors in a positioning receiver. The device comprises a discriminator, a first decision device, a second decision device, a position, speed and time PVT resolving circuit, a vector tracking corrector, a loop filter and the like. Whether the tracking error exceeds an error threshold value or not is judged at intervals of timing duration through a first decision device, if yes, PVT calculation in a position, speed and time PVT calculation circuit is not used, the tracking error is directly sent to a loop filter, and if not, the tracking error is corrected based on the PVT calculation circuit. Moreover, whether the corrected error exceeds an error threshold value or not is judged through a second decision device, if yes, the tracking error is directly used as the input of the loop filter, and if not, the corrected error is used as the input of the loop filter. In this way, by using the first decision device and the second decision device, accumulation of tracking errors can be avoided, and the reliability of a tracking loop is improved.

The invention discloses a portable sample detection and treatment box for agricultural products. The portable sample detection and treatment box comprises a box body and a box cover, wherein the box cover is mounted on the box body; a pulverizer, a centrifuger, a water bath kettle, an ultrasonic cleaning machine and an electric control component are arranged in the box body; the electric control component comprises a pulverizer switch, a water bath kettle switch, a water bath kettle intervalometer, a water bath kettle temperature controller, an ultrasonic switch, an ultrasonic intervalometer, a centrifuger switch and a centrifuger intervalometer; telescopic pull rods are arranged in side edges of the box body; rollers are arranged at the bottom of the box body; a solar power system is arranged in the box cover and comprises a solar PV panel embedded in the box cover and a memory battery. The portable sample detection and treatment box has the advantages that the structure is simple; the carrying and the use are convenient; the agricultural products can be detected on site visually, so as to improve the public trustworthiness of the detection, and avoid detection result conflict between a detecting person and a person to be detected; the operation is convenient and fast, all sample treatment devices are mounted in the portable box body in a centralized manner, so as to facilitate moveable detection.

The invention relates to a field staff behavior monitoring system and monitoring method. The monitoring system comprises a convenient mobile terminal and a remote terminal which are connected througha network. The convenient mobile terminal comprises a position sequence acquisition module used for correspondingly acquiring and storing a position coordinate sequence according to a time sequence; the remote terminal comprises a receiving module used for receiving the position coordinate sequence; a segmentation module which is used for segmenting the position coordinate sequence according to apreset time interval and sorting the data segments according to the time sequence; a distance interval calculation module which is used for calculating the distance interval between the head positioning coordinate and the tail positioning coordinate in each data segment; and a behavior judgment module which is used for judging whether an abnormal staying behavior exists or not according to the distance interval of each data segment. Compared with the systems and the methods in the prior art, the system and the method have the advantages that whole-process dynamic monitoring can be carried out,and the working efficiency of operators is improved.

A Time-Resolved PET imaging system for producing real-time, high resolution, three-dimensional positron emission tomographic images without performing sinogram formation or image reconstruction. The third dimension is provided by measuring the ΔT between the arrival times of gamma rays from a positron event being detected by two cooperating detectors. In order to determine the location of a positron event along the lines of response, the measurement includes a fast scintillator, constant fraction discriminator and the digital intervalometer. The arrival time of each photon in the annihilation process is recorded with respect to a clock frequency with picosecond resolution. This approach requires significantly fewer positron events, thus requiring fewer detectors, thereby resulting in a new, real-time TPET imaging system that is more efficient and more economical to produce than conventional PET systems.

A computer-implemented method reduces an amount of machine health data to be stored in a data storage device while preserving details of extrema values occurring within incremental measurement time intervals in an extended time period during which the data were collected. The method includes: sensing an operational characteristic of a machine and generating an operational characteristic signal; generating machine health parameter data that include amplitude values and associated time values; for each incremental measurement time interval, calculating an average value of the amplitude values, identifying a maximum value of the amplitude values, and identifying a minimum value of the amplitude values; and storing a compressed machine health parameter data set in the data storage device. Thecompressed machine health parameter data set includes the calculated average values and the identified maximum and minimum values for the incremental measurement time intervals.

This invention is a distance measurement rangefinder. The proposed laser rangefinder contains, serially connected, pulse laser with an optical system, a pulse amplifier and a regulated pulse generator; also, serially connected, a photoreceiver based on an avalanche photodiode with an optical system, conjugate to that of the laser, an amplifier of photo-detected signals, comparator, time-interval meter, and an object detection indicator. This rangefinder is unique in that the pulse amplifier features an additional output, connected to which is a second laser with an optical system, conjugate to that of the first laser and avalanche photodiode; and an additional second input connected to the first input of the pulse amplifier, to the first output of the regulated pulse generator and to the first input of the time-interval meter.

The invention provides a voltage source remote calibration system and calibration method. The voltage source remote calibration system comprises a field control computer and a remote control computer. The field control computer is connected with a to-be-detected meter and a first time interval counter; the to-be-detected meter is a direct-current voltage source; and the to-be-detected meter is connected with the first time interval counter through a first voltage frequency conversion module, and the first time interval counter is also connected with a first GPS common-view receiver. The remote control computer is connected with an etalon and a second time interval counter; the etalon is connected with the second time interval counter through a second voltage frequency conversion module, and the second time interval counter is also connected with a second GPS common-view receiver; and data transmission is carried out between the field control computer and the remote control computer through a DataSocket communication technology. Compared with a traditional calibration mode, the remote calibration system has the advantages that the calibration time is greatly shortened, the labor cost is reduced, and the calibration efficiency is improved.

The invention discloses a Beidou-based remote real-time time calibration method. The method comprises the following steps: 1) a common-view receiver receives second pulse data sent by the same navigation satellite; 2) carrying out noise reduction processing on the second pulse data sequence received by the common-view receiver; 3) the local atomic clock and the common-view receiver respectively send pulses per second to a time interval counter, and the time interval counter calculates the time difference between the local time and the satellite time; 4) continuously tracking and processing the data output by the time interval counter by a data processing module of the time unification equipment; 5) the data processing module compiles the measurement result of each tracking epoch into a B code and sends the B code; and 6) demodulating the B code to obtain a 1PPS signal, and measuring the demodulated 1PPS signal by a time interval counter to obtain the time difference between the timing system equipment calibration instrument and the calibrated time equipment. According to the method, the common-view real-time performance is enhanced, and the defect that a tracking dead zone exists in traditional common view is overcome.

A Time-Resolved PET imaging system for producing an event-by-event, real-time, high resolution, three-dimensional positron emission tomographic images without performing sinogram formation or image reconstruction. The third dimension is provided by measuring the ΔT between the arrival times of gamma rays from a positron event being detected by two cooperating detectors. In order to determine the location of a positron event along the lines of response, the measurement includes a fast scintillator, constant fraction discriminator and the digital intervalometer. The arrival time of each photon in the annihilation process is recorded with respect to a clock frequency with picosecond resolution. This approach requires significantly fewer positron events, thus requiring fewer detectors, thereby resulting in an gamma event-by-gamma event, real-time TPET imaging system that is more efficient and more economical to produce than conventional PET systems.

The present technology relates to an information processing device, an information processing method, and a program that enable easier visualization of a sound field.The information processing device includes: a calculation unit configured to calculate, on the basis of positional information indicating a plurality of observation positions in a space and an audio signal of sound observed at each of the plurality of observation positions, an amplitude or phase of the sound at each of a plurality of positions in the space at a first time interval; an event detection unit configured to detect an event; and an adjustment unit configured to perform, in a case where the event is detected, control such that the amplitude or the phase is calculated at a second time interval shorter than the first time interval. The present technology can be applied to a sound-field visualization system.

The invention discloses an Internet of Things environment control method and device based on context-aware. The method comprises the following steps: an environment control device in a network collects context-aware data to judge whether people are in a controlled zone or not; if people are in the controlled zone, the environment control device ensures that an intervalometer resets to a set time, humiture is processed by treating forecast average vote numbers as a PMV value, and then correspondence of the data is performed according to a set value table, a comfort degree mapping table and a control rule mapping table to obtain a control strategy of a controlled terminal; if people are not in the controlled zone, the environment control device detects whether a working controlled terminal exists or not, if no, no operation is carried out; if yes, the turning on or the turning off of the intervalometer is judged, if the intervalometer is turned off, the turning on of the intervalometer is performed, and when the intervalometer returns to zero, a control command is transmitted to close the working controlled terminal, if the intervalometer is turned on, countdown is performed continuously until the intervalometer returns to zero, or the controlled zone is detected again to ensure that whether people are in or not. The method and the device, provided by the invention, can realize intelligently real-time control of the controlled terminal to adjust the environment so as to meet comfort degree requirements of users.

The present application provides a frequency discrimination method for locating a time-hopping signal of a base station. The frequency discrimination method includes: calculating the frequency error of the local reproduced time-hopping signal according to the interval of adjacent time-hopping pulses in the time-hopping signal. The present application also provides a frequency discrimination device for locating the time-hopping signal of the base station. The frequency discrimination method and frequency discrimination device for locating the time-hopping signal of the base station provided by this application fully combine the time-hopping characteristics of the time-hopping signal, and can obtain the frequency error of the local reproduced time-hopping signal according to the characteristics of the time-hopping signal. In this way, the convergence speed of the frequency locked loop can be accelerated, the initial traction force of the frequency locked loop can be effectively enhanced during the carrier tracking process of the time-hopping signal, and the tolerance range of the frequency locked loop to the initial Doppler estimation error can be improved.

The invention discloses a self-adaptive sampling method and system suitable for fluctuation signals, and belongs to the technical field of signal processing. The method comprises the steps of selecting characteristic quantity of a fluctuation signal according to an industrial and commercial user non-intervention load identification application scene, collecting the fluctuation signal and obtaining industrial and commercial user bus side waveform data, determining a calculation interval of the fluctuation signal according to the multi-dimensional characteristic quantity, and according to the calculation interval, calculating the multi-dimensional characteristic quantity of the industrial and commercial user bus side waveform data; performing smooth filtering processing and noise elimination processing on the multi-dimensional characteristic quantity, reserving a rising edge and a falling edge of the multi-dimensional characteristic quantity, and generating a multi-dimensional characteristic quantity sequence; and carrying out abnormal moving point judgment on the points of the multi-dimensional characteristic quantity sequence, reserving the judged abnormal moving points as sampling data, and carrying out adaptive sampling on the sampling data. According to the invention, the automation and effectiveness of load state judgment in a load identification algorithm are ensured.

The invention provides a time synchronization method of a distributed relay protection device. According to the invention, accurate second edge positioning is realized between the main machine and thesub-machine by using the crystal oscillator counter. The calculation of the next second interval, the next second sampling value sending interval and the next second remainder averaging interval is realized through a second interval calculation method and a remainder averaging algorithm in the second interval. The problems that in the time synchronization process, the discrete performance of timescales fluctuates greatly, and high-precision time synchronization cannot be carried out between a host and a sub-machine when no GPS signal exists are solved. The discrete value of the sampling value sending interval is kept at the nanosecond level through the remainder equalization algorithm in the second interval, so that the stability of the sampling value sending period is greatly improved,high-precision time synchronization between the distributed host and the sub-machine of the relay protection device can be realized without the help of an external GPS signal, and the reliability of relay protection is improved.

The invention belongs to the technical field of urban public transport, and discloses a vehicle scheduling method and device, and the method comprises the steps: determining a target time period to which the departure time of an abnormal vehicle shift belongs according to the departure time of the abnormal vehicle shift; calculating the total time redundancy in the target time period according to the maximum departure interval specified by each departure time period in the target time period; and under the condition that the total time redundancy is not smaller than a target difference value, adjusting the departure time in the target time period based on the maximum departure interval specified by each departure time period. According to the method, the adjustment time period is determined firstly, under the condition that the total time redundancy in the adjustment time period meets the adjustment requirement, the departure moments corresponding to the time intervals with the time redundancy in the adjustment time period are automatically adjusted according to the maximum departure interval specified by the departure time period, and the situation of large-interval departure can be avoided.

The invention provides an LTE-based frequency offset processing method and system. The method includes setting the maximum time interval threshold for twice PUSCH scheduling for the user equipment on the base station side, and the threshold for the number of consecutive decoding errors, the user equipment side sends PUSCH data corresponding to the PUSCH scheduling on a predetermined resource, and the base station side uses the accumulated frequency offset The value performs frequency offset compensation on the received PUSCH data and calculates and updates the cumulative frequency offset value in real time. The updated cumulative frequency offset is used for subsequent TTI frequency offset compensation. The comparison between the count and the threshold of the number of consecutive decoding errors adjusts the maximum time interval threshold of two PUSCH scheduling in real time, and the base station side maintains the time interval count in real time, and judges whether to send to the user equipment according to the comparison between the time interval count and the threshold and whether there is PUSCH scheduling Forcibly send PUSCH scheduling to improve the frequency and accuracy of frequency offset estimation on the base station side.

An electronic device for acquiring encoder speed information and a method for implementing the same are provided, wherein the electronic device includes an encoder for electrically outputting an encoder signal corresponding to a driving speed, a processor unit for outputting a preset interval count value based on the resolution of the encoder, and an integrated circuit unit for outputting the interrupt count value for calculating information using the encoder signal and the interval count value. By acquiring the encoder speed information in this manner, control performance can be improved.

The invention discloses a method for accurately controlling timing switching value output of a distributed system. The method comprises the following steps: acquiring a PPS interval through a hard bussynchronizing signal; calculating local crystal oscillator deviation; obtaining a relative time difference and an outlet state of a timing switching value output; calculating the time difference between the timing outlet of an outlet board card and the PPS moment; and triggering the timing switching value output during timing interruption or according to a timer function. According to the methodfor accurately controlling timing switching value output by a distributed system, the limitation that the control board card must perform direct I / O control on an outlet relay can be broken through,the control precision of the timing exit is ensured through the inter-board communication mechanism and the cooperative cooperation between the board cards, and a solution is provided for an application scene needing accurate timing exit.

The invention discloses a synchronization device and a synchronization method between a main clock and a standby clock, the device comprises a working clock, a time interval counter, a data processing and control unit, a phase fine tuning instrument and a standby clock which are connected in sequence, the time interval counter is also connected with the phase fine tuning instrument, and the data processing and control unit is connected with the standby clock. The method comprises the following steps: measuring a clock difference between 1PPS output after a signal of a backup clock passes through a phase fine tuning instrument and 1PPS of a working clock through a time interval counter to obtain a phase deviation delta T of the backup clock relative to the working clock, and calculating a frequency compensation amount delta P added to the backup clock; and the compensation amount is fed back to the phase fine tuning instrument to perform frequency control on the backup clock, so that high-precision frequency and phase synchronization between the working clock and the backup clock is realized. The synchronization device is low in cost and high in synchronization precision, the method is high in practicability, high-precision frequency and phase synchronization between the main clock and the standby clock can be achieved, and the long-term frequency stability of the standby clock is improved while the phase synchronization precision between the main clock and the standby clock is guaranteed.