9results about How to "Eliminate time errors" patented technology

This application relates to a method and apparatus for time-resolved electrochemical Raman spectroscopy. The method includes: acquiring a delay time parameter, potential waveform data, and an initial trigger signal; performing event trigger detection on the initial trigger signal to obtain an event trigger timestamp; at the event trigger timestamp, converting the potential waveform data based on the initial trigger signal to obtain a potential pulse signal; the potential pulse signal is used to indicate the initiation of an electrochemical reaction; at the event trigger timestamp, determining the laser trigger delay amount corresponding to the potential pulse signal based on the delay time parameter; at the event trigger timestamp, transforming the potential pulse signal based on the laser trigger delay amount to generate a laser trigger pulse signal; wherein the laser trigger pulse signal is used to indicate the emission of a pulsed laser; acquiring the reaction current signal corresponding to the electrochemical reaction and the Raman spectrum corresponding to the electrochemical reaction under pulsed laser irradiation. This method can improve the tracking accuracy of rapid electrochemical processes.

A method for performing carrier phase measurement by a terminal in a wireless communication system according to various embodiments and an apparatus therefor are disclosed. Disclosed is a method comprising the steps of: receiving, from a network, configuration information for repeatedly and sequentially configuring time domain windows (TDWs) for carrier phase measurement within a measurement gap; measuring a phase difference in a positioning reference signal (PRS) based on the configuration information; and reporting measurement information on the phase difference to the network, wherein the measurement of the phase difference is performed using only the PRS received within the same TDW. An apparatus for performing the method is also disclosed.

The present application relates to the technical field of program control systems, and in particular to a method for calculating the execution time of a PLC scanning task, including obtaining the operating status of the enabling end of the on-delay timer, obtaining the size relationship between the count value of the on-delay timer and the set value of the on-delay timer; according to the operating status and / or the size relationship, eliminating the timing error when the error condition is met, including assigning the calculated value of the scanning task execution time of the previous cycle to the calculated value of the scanning task execution time of the current cycle; and calculating the scanning task execution time in real time when the precise calculation conditions are met. The present application eliminates the calculation error of the PLC scanning task execution time, thereby eliminating the fluctuation of the production line control parameters and improving product quality.

The invention relates to the technical field of image data processing, and discloses an image timestamp marking method, camera equipment and a video monitoring system.The method comprises the steps that exposure time data is determined and stored when an exposure action of an image sensor is detected through a microcontroller; the image signal processor processes the original image data to obtain image data in a specified format; the USB device controller packages the image data into a UVC data packet and sends the UVC data packet to the host device; and the microcontroller responds to a time query instruction sent by the host through the USB control endpoint and returns a response message carrying time data, so that the host associates the time data with the corresponding image data. According to the method, hardware-level time marking is carried out at an image acquisition source, time sequence errors caused by transmission delay in a traditional host end marking scheme are reduced fundamentally, and a reliable technical basis is provided for application scenes with strict time sequence requirements.

The invention provides a trigger time synchronization method of a radar system. The radar system comprises a main control module and a plurality of radar units. Each radar unit comprises a slave control module, a radio frequency front-end module and a radar transceiving antenna module. The time synchronization method comprises the following steps: a master control module sends a periodic signal and a clock signal to a plurality of radar units; synchronous delay time is stored in the slave control modules, and each slave control module receives the periodic signal and the clock signal, obtains a trigger point of the periodic signal according to the received clock signal, synchronous delay time and periodic signal, and sends the periodic signal and a trigger point signal to the radio frequency front end module; the trigger point position signal comprises a trigger point position; and the radio frequency front-end module counts the period of the received periodic signal according to the triggering point position signal, and triggers the radar transceiving antenna module to start signal receiving and sending at the triggering point position.

The invention provides a heat release rate estimation method and system based on computer vision, and the method comprises the steps: defining a heat release rate magnitude, and training a magnitude prediction model to carry out the prediction of the heat release rate magnitude; and combining the predicted heat release rate magnitude and the flame sectional area, and substituting into a heat release rate fine numerical value estimation function to realize heat release rate estimation. Through deep learning and computer vision and based on different magnitudes, sectional heat release rate estimation is carried out, calculation overhead is reduced, and high-efficiency and non-contact heat release rate measurement is realized.

The invention discloses a multi-mode high-precision PPS time service test system and method, relates to the technical field of time synchronization of a satellite-borne system, and solves the problem that in the prior art, comprehensive time synchronization test is difficult to perform on a satellite-borne single machine in a ground environment. The test system comprises a GNSS receiving module, an SoC (System on Chip), a power management module and a differential output module; the power management module supplies power to each module; the SoC system on chip comprises a pulse per second generation module, a PPS output module, a message input module, a longitude and latitude reading module, a UTC time updating module and a message output module. The testing system is provided with an external time system and an internal time system, external GNSS signals and internal system timing can be received at the same time, and the stability of the time signals is ensured while the time precision is ensured. According to the invention, four sending modes are adopted, so that comprehensive testing of satellite-borne single-machine time synchronization precision is realized.

According to the distribution line external damage fault point positioning method and device and the computer equipment provided by the invention, when the distribution line has the external damage fault, the first traveling wave arrival information feature and the first video monitoring equipment time of the distribution line at the first end are recorded; the power distribution line is a power cable in a virtual video composite cable formed by a power transmission cable and video monitoring equipment; acquiring a second traveling wave information arrival feature and second video monitoring equipment time of the distribution line at a second end; according to the first video monitoring equipment time and the second video monitoring equipment time, the first traveling wave information arrival feature and the second traveling wave information arrival feature are corrected, and the accurate time difference value of the fault traveling wave signal arriving at the two ends is obtained; and positioning a fault point according to the total length of the distribution line and the accurate time difference. Therefore, on the premise that a high-precision GPS hardware device does not need to be additionally arranged and the environment influence is avoided, the cost is reduced, and the distance measurement accuracy is ensured.

This invention discloses an assembly device for laminated glass production. The assembly device includes a glass positioning support platform for supporting and fixing the lower glass layer and the PVB film, and a machine head capable of feeding along the glass cutting edge. A main shaft is rotatably mounted inside the machine head, and a servo motor is fixed to the side wall of the machine head, with the drive end of the servo motor fixedly connected to the main shaft. A disc blade for cutting the film, a pre-compression cam for driving pre-compression action, and an exhaust cam for driving exhaust action are coaxially fixed on the main shaft. A pre-compression locking assembly that works in conjunction with the pre-compression cam is provided inside the machine head. This invention provides an assembly device for laminated glass production that achieves rigid linkage between cutting and exhaust through a single drive source, simultaneously improving cutting dimensional accuracy, eliminating air bubble defects during lamination, simplifying equipment structure, reducing production and maintenance costs, and adapting to the production of various types of laminated glass.