63results about How to "Avoid time error" patented technology

The invention discloses an online measurement device and a measurement method thereof for a pipeline flux instrument, comprising a detection terminal and a background management unit; the detection terminal comprises a flowmeter, a camera, a DSP module and a communication unit connected with the DSP module; the background management unit comprises a central control unit and a communication module connected with the central control unit; the detection terminal and the background unit carry out data communication by a GPRS wireless network and / or an Internet; the output terminals of the camera and the flowmeter are respectively connected with the image signal input terminal and the flux value signal input terminal of the DSP module; the camera of the detection terminal right faces to the dial plate of the instrument to be measured; the flowmeter is arranged on the pipeline; and the background management unit respectively obtains the accumulated flux in the pipeline within unit time by the camera and the flowmeter in the detection terminal so as to calculate the measurement error of the instrument to be measured.

The invention discloses a method, a device and a system for acquiring performance parameters of a browser of a mobile terminal. The method includes setting a client device for receiving instructions from a server and executing the instructions in the mobile terminal in advance; receiving a network page access instruction from the server, triggering access to a network page corresponding to the network page access instruction and triggering packet capturing software installed in advance to capture a packet; outputting the captured packet to the server after the captured packet is encapsulated; and analyzing the captured encapsulated packet, acquiring data required for computing the performance parameters of the browser of the mobile terminal and computing to obtain the performance parameters of the browser of the mobile terminal. By the aid of the method, the device and the system, reliability of the acquired performance parameters of the browser of the mobile terminal can be improved.

The invention provides a discharge current monitoring device of a lightning arrester. The discharge current monitoring device comprises discharge current monitoring units and a data receiving terminal; each discharge current monitoring unit transmits monitored discharge current information to the data receiving terminal via an ISM (industrial scientific medical) wireless data transmission unit; and the discharge current information contains amplitude, polarity, waveform and GPS (global positioning system) time information. Each discharge current monitoring unit is in bidirectional wireless communication with the data receiving terminal, and the data receiving terminal can access the discharge current monitoring units at any time to know running states of the discharge current monitoring units. The discharge current monitoring device is simple in structure and convenient to maintain, shortcomings of current discharge current monitoring for lightning arresters in the field of online monitoring for the lightning arrestors are overcome, and an excellent approach to acquiring lightning current parameters for lightning discharge monitoring and research is provided.

The invention provides a pulsar observation device, system and method. Accurate time interval information can be obtained by counting a sampling clock, the time information of sampling time and sampled data are input into a data frame together to ensure highly consistent time and signal, the integer seconds obtained by time synchronization of a hydrogen atomic clock and a GPS receiver and the decimal seconds obtained by counting the sampling clock are utilized to acquire time information, thereby acquiring nanosecond scale high precision pulsar signal arrival time, and greatly improving the precision and accuracy of pulsar observation. In order to avoid the time error caused by data transmission loss, a network checking head is added in the data frame, compensation can be carried out if data frame loss is found, thus guaranteeing the data integrity and time continuity of long-time observation, and being of important significance to pulsar observation data processing.

The embodiment of the invention provides a GUI rendering display method, a terminal, a server, electronic equipment and a storage medium, and relates to the technical field of software. The method comprises the steps that interactive operation information sent by a terminal is received, a rendering instruction of each frame of image and a timestamp corresponding to a screen updating period are updated according to the interactive operation information, a server and the terminal render the to-be-rendered frame of image independently according to the rendering instruction, and rendered frame images are obtained, and the server sends the rendered frame image to the terminal, the terminal receives the rendered frame image sent by the server, and the rendered frame image and the terminal rendered frame image are jointly used for displaying the system GUI. According to the embodiment of the invention, the frame image processing capabilities of the terminal and the server can be isolated, the terminal and the server do not influence each other, give full play to the respective capabilities, and perform synchronization according to the timestamp information to avoid time sequence errors, so that the image processing rate can be improved, hardware resources of the terminal and the server can be fully utilized, the overall efficiency is improved, and the user experience is improved.

The embodiment of the invention discloses a low-power-consumption control method which comprises the following steps: when a current mode is a working mode, detecting whether a running service processexists or not; when the running service process is not detected, closing a system clock and entering a low-power-consumption mode from the working mode; determining a difference value between the operation time of the next to-be-operated business process and the current system time, and setting wake-up time according to the difference value; and when the wake-up time expires, entering the workingmode from the low power consumption mode, and compensating the system clock according to the wake-up time. The embodiment of the invention further discloses a low-power-consumption control device andsystem and a computer readable storage medium.

The invention relates to a factory detection method, device and system of HDCP function. The method includes the following steps that: key information of a data source terminal, which is stored in advance, is read, and an HDCP authentication request message is transmitted to a detected terminal; response information sent back by the detected terminal is received, wherein the response information contains the key information of the detected terminal; the key information of the detected terminal is compared with the key information of the data source terminal, and whether HDCP function authentication on the detected terminal by the data source terminal is successful can be judged according to comparison results. With the method, device and system adopted, the problems of poor compatibility and the stability of device HDCP factory test existing in a traditional mode can be effectively solved, and improvement of test efficiency can be benefitted.

A system for reserving wake-up / sleep mode of a slave apparatus of a digital TV by two-way communication is provided to operate a plurality of apparatuses quickly and simply, thereby preventing time error between apparatuses. A master apparatus(100) reserves and sets a wake up mode or a sleep mode of a plurality of slave apparatus(200) and each time. The master apparatus counts a reservation time set with regard to each slave. The master apparatus determines a wake up mode state or a sleep mode reservation mode state at the reserved time and checks an address and a connection state of a corresponding slave apparatus through two-way communication. The master apparatus converts the corresponding slave apparatus into a wake up mode or a sleep mode according to a reserved setting state.

The invention relates to a method for realizing charge instant prompt on the digital mobile terminal, used in digital mobile communication system. Wherein, the local exchanger via special command transmits the charge information to the user digital terminal, which will analyze said command to obtain the charge information of present calling, to be displayed on the terminal screen and stored in the memory of terminal; before the user uses said charge instant prompt service, user should requests and makes a contrast with operator, while the contrast information is stored in the operation maintaining central server (OMC server).

The invention provides a timing control method and device for an air conditioner and the air conditioner. The timing control method for the air conditioner comprises the following steps: a selection instruction of a timing mode is received, and the timing mode is started; timing time is set, and an operation parameter of the air conditioner is set; timekeeping operation is started, and whether thetimekeeping time reaches the timing time or not is judged; and when the timekeeping time reaches the timing time, a control command corresponding to an operation parameter is sent to the air conditioner, and the air conditioner is controlled to run according to the operation parameter. According to the technical scheme, on one hand, the various timing modes are provided, a user can select according to requirements of the user, and the user experience is improved; and on the other hand, the timing function setting timing time calculating are completed by a controller, and only when timing andtimekeeping are completed, the parameter command needed to be operated is sent to the air conditioner, the timing error of the controller and the air conditioner is avoided, and the customer complaintprobability is reduced.

The invention relates to a cryogenic refrigeration control method, a cryogenic refrigeration control device and an air conditioner. The cryogenic refrigeration control method includes the steps of detecting the inlet temperature T0 of an indoor heat exchanger of the air conditioner in the cryogenic refrigeration mode; judging whether T0 is greater than the first preset temperature and smaller than or equal to the second preset temperature; and confirming that the air conditioner is operated in the cryogenic refrigeration mode when T0 is greater than the first preset temperature and smaller than or equal to the second preset temperature. According to the cryogenic refrigeration control method, the cryogenic refrigeration control device and the air conditioner, the inlet temperature T0 of the indoor heat exchanger of the air conditioner is detected in the cryogenic refrigeration mode, users can confirm that the air conditioner is operated in the cryogenic refrigeration mode when T0 is greater than the first preset temperature and smaller than or equal to the second preset temperature, and therefore the cryogenic refrigeration output capacity of the air conditioner can be accurately controlled, and the requirements of the users for cryogenic refrigeration can be met.

The invention discloses a concrete friction coefficient determination method and device. The method comprises the following steps: step 1, pouring concrete into a concrete pump pipe, and tamping the concrete in an insertion manner through an insertion tamping rod, so as to enable the concrete to be more uniform and compact; step 2, at any moment when the concrete falls, measuring pressure intensity through a pressure sensor; step 3, measuring a falling speed of the concrete through a speed measurement instrument; step 4, measuring falling time of the concrete through a probe type timing switch; step 5, obtaining the friction coefficient mu of the concrete through a calculation formula shown in the description. The device comprises the concrete pump pipe, a support, the pressure sensor, a bracket, the speed measurement instrument, the probe type timing switch, a hopper door and the insertion tamping rod. By adopting the concrete friction coefficient determination method and device, the friction coefficient between pumping concrete and the concrete pump pipe of different ratios can be detected and then the pumping performance of the concrete can be evaluated.

The invention discloses a teaching device used for simulating ligation of an artery blood vessel of a human body, and belongs to the technical field of medical simulation teaching devices. The teaching device comprises a test bed, simulated blood vessels, a simulated blood storage tank and a pressurization device, wherein a cofferdam is arranged on the test bed; a plurality of simulated blood vessels are arranged in the cofferdam; the simulated blood vessels are connected with the simulated blood storage tank; and the pressurization device is connected with the simulated blood storage tank. The pressurization device is used for supplying stable pressure of a simulated human body to the simulated blood storage tank, so that the problem of a gravitational flow type device in the prior art that the bleeding pressure and the flow velocity change due to the increase of the amount of bleeding as the blood pressure and the blood flow velocity change with the height of a blood bag is solved, so that the simulation test teaching is closer to an actual situation, and an effect of simulation teaching is improved.

The invention discloses an automatic roll changing device for a mulching film winding machine. The automatic roll changing device is arranged on a frame of the mulching film winding machine; the mulching film winding machine comprises winding roller sets respectively consisting of two matched winding rollers; each winding roller set is provided with a power device for driving the winding roller set to roll, and is provided with a mulching film winding drum which rotates together with the winding roller set and used for winding a mulching film; at least two winding roller sets are arranged; and the automatic roll changing device comprises a cutoff mechanism used for cutting off the mulching film, and a film winding mechanism used for winding the cut mulching film to the mulching film winding drum, wherein the cutoff mechanism is arranged on the frame of the mulching film winding machine, and the film winding mechanism is arranged below the cutoff mechanism. The automatic roll changing device realizes the automatic cutoff and roll changing of the mulching film, solves the technical problem which cannot be solved by technicians in the field for a long time, is structurally provided with the special cutoff mechanism and the film winding mechanism, has substantial characteristics, and has obviously improved effect.

The invention discloses an FPGA-assisted high performance computing method and an FPGA. The method includes the following steps: enabling the FPGA to extract and parse original time data obtained froma time calibration source, and obtaining time calibration time information; performing computing to obtain a time calibration signal by using a preset time calibration algorithm according to the timecalibration time information and reference time information, and sending the time calibration signal to a time calibration device by using a data bus, wherein the reference time information is time information correspondingly generated according to a system clock. The scheme of the invention adopts a calibration source such as an IRIG-B code source as a clock source, and thus the network delay inan NTP software time calibration mode and the own time error of a standard NTP protocol can be avoided; and the clock calibration is performed by using a time calibration algorithm based on the characteristics of FPGA parallel processing, the time error caused by a serial operation mode can be avoided, the time accuracy of the clock calibration can be improved, and the requirements of industrialautomation schemes can be further met.

Provided is a power supply device for a vehicle that suppresses an increase in the load on a battery while achieving battery temperature adjustment control and air conditioning control. The power supply device for a vehicle includes a battery (12), an air conditioning device (15), a battery temperature regulating device (14), and a control device (16). The control device (16) includes an air conditioning control part (17) that starts operation of the air conditioning device (15) at an air conditioning start time preset by a user, and a battery temperature control part (14) that sets a batterytemperature regulation start time (t1) at which operation of the battery temperature regulating device (18) is started based on the air conditioning start time (t2) and a battery temperature. Therefore, not only is it possible to alleviate burden on the battery by shortening a state in which both the air conditioning device and the battery temperature regulating device are operating, but it is also possible to eliminate inconvenience for a user to set both the air conditioning start time and the battery temperature regulation start time.

The invention discloses a timing sequence monitoring unit and a monitoring system oriented to near-threshold low voltage, relates to an adaptive frequency adjustment technology based on on-chip timingsequence detection, and belongs to the technical field of integrated circuit low-power consumption design. The monitoring unit provided by the invention realizes timing monitoring oriented to near-threshold voltage with relatively lower circuit cost, realizes adaptive adjustment of system frequency through establishment of the monitoring system comprising a frequency control state machine, a phase-locked loop and a fast clock adjustment module, and solves a technical problem that a timing sequence monitoring circuit which is designed in a manner of being oriented to a normal voltage can hardly work correctly in a near-threshold region and rare timing sequence monitoring units which can work in a manner of being oriented to the near-threshold voltage region have large area and needs high cost.

The embodiment of the invention discloses a transmission time sequence monitoring method and device for sensor data. The method comprises the steps that time information corresponding to each piece ofcollected sensor data is obtained, and the time information is calibrated time information when the sensor data passes through a preset transmission node in a data collection system in the data collection process; based on the time information corresponding to each piece of sensor data, and a preset time range, whether data transmission between every two predetermined transmission nodes is abnormal or not is determined, wherein the preset time range comprises a preset transmission time range required by data transmission between every two preset transmission nodes and / or a preset sensor sampling period, so as to monitor the data acquisition process and position in time to obtain a specific abnormal position.

The invention discloses a solar energy measuring liquid heat conductivity coefficient experimental instrument and a measurement method thereof, and belongs to the field of physical experimental instruments. The instrument comprises a sliding rail, a heating plate rack, a cooling plate rack, a liquid sample containing tank, a heating plate, a cooling plate, a temperature sensor I, a temperature sensor II, a heat dissipation fan, a single chip computer temperature measurement and control instrument, a compression bolt, a compression nut, a solar photovoltaic power supply system and an electronictimer. The instrument is used for measuring the heat conductivity coefficient of liquid through a steady-state method, is simple to operate, visual in phenomenon, accurate in measurement data, smallin measurement error, high in repeatability, convenient in disassembly and assembly of all components, and convenient for experiments to be smoothly performed, and avoids the problem of slow teachingprogress caused by inconvenience in disassembly and assembly of the existing instruments.

The invention provides an intelligent flattening machine and a flattening method thereof. The intelligent flattening machine comprises a feeding conveyor belt (1), a rack (2), an inlet supporting plate (203), upper flattening rollers (204), lower flattening rollers (205), an upper flattening roller motor (201), a lower flattening roller motor (202), a control cabinet (206), an outlet supporting plate (209) and a discharging conveyor belt (12). The intelligent flattening machine conducts flattening on an inlet and an outlet and repeated detection on plates through multiple inlet roller detectors and multiple outlet roller detectors, adjusts the corresponding flattening rollers according to the required plate flatness, can comprehensively detect multiple points in the same horizontal plane simultaneously and calculate the comprehensive adjustment value and is good in adjustment range consistency, accurate in flattening and fast and convenient to use. The control cabinet controls movementof the feeding conveyor belt and movement of the discharging conveyor belt, so that the feeding and discharging process is more harmonious with the flattening machine. The labor force for manual carrying is omitted. Time errors during manual carrying are avoided.

The invention provides a guiding structure for assembling spray filling bottles, belonging to the technical field of mechanical structures and solving the technical problems of low assembling efficiency and the like of an existing spray filling bottle. The guiding structure for assembling the spray filling bottles comprises a mounting base; a clamping air cylinder is fixedly arranged on the mounting base; a clamping arm I and a clamping arm II which can be oppositely closed are separately connected on an output shaft of the clamping air cylinder; half-bowl-shaped guiding clacks I are arranged on the clamping arm I; half-bowl-shaped guiding clacks II are arranged on the clamping arm II; and each guiding clack I and the corresponding guiding clack II are relatively arranged and can be closed to form a guiding bucket. According to the guiding structure provided by the invention, in the assembling process of bottle bodies of the spray filling bottles and spraying assemblies, suction tubes in the spraying assemblies can be smoothly and accurately inserted into the corresponding bottle bodies under the action of guiding surfaces formed by the guiding clacks I and the guiding clacks II, so that the assembling accuracy of the spray filling bottles is improved, and the error rate is reduced, and further the assembling efficiency of the spray filling bottle is improved.

The invention provides a time synchronization method and apparatus. The method comprises the following steps: establishing a transmission path from each slave device network node to a master device network node, so that optical wavelengths corresponding to each transmission path are mutually different optical wavelengths; and controlling to load the synchronization information of each slave devicenetwork node on an optical wavelength signal of the corresponding optical wavelength, and transmitting the optical wavelength signal on the transmission path, wherein when the network nodes by whichthe transmission path passes comprise the master device network node, the slave device network nodes and at least one intermediate device network node, in a transmission process of the optical wavelength signal, the intermediate device network node forwards the received optical wavelength signal on an optical layer. As the intermediate device network node of the transmission path does not need toperform photoelectric conversion processing when receiving the optical wavelength signal carrying the synchronization information and directly forwards the optical wavelength signal on the optical layer, a time error imported by the intermediate device network node by performing the photoelectric conversion processing on the optical wavelength signal can be avoided.

The invention discloses a serial port transmitting method and device based on an on-chip system. The serial port transmitting method based on the on-chip system comprises the steps: acquiring a Baud rate and a delay machine period determined by a delay subprogram programmed by an assembly language, wherein the delay machine period is delay time for transmitting bit data; acquiring an analog serial port programmed by the assembly language; transmitting the output data of the on-chip system according to the delay machine period and the Baud rate by virtue of the analog serial port, wherein the analog serial port outputs the data according to a serial port data transmission rule. By adopting the method and device, the problems in the prior art that the data outputted in the debugging of Soc is incorrect can be solved, and an effect of accurately outputting data can be achieved.

The invention provides an on-line test device and an on-line test method for time characteristics of embedded software, and the method comprises the following steps: 1, enabling a test device EasyTimeto be connected with a tested piece through a serial port, and enabling the tested piece to reside in tested software; step 2, inserting the time recording instruction into tested software, and outputting the time recording instruction in real time through a serial port for a test device EasyTime to collect, and burning a program; 3, operating tested software, designing a test scene, directly reading time parameters through performance test equipment EasyTime, wherein the read time parameters correspond to the software operation cycle number; and step 4, after the test is finished, exportingeach measured time through the test equipment EasyTime for software development personnel and test personnel to analyze and record. The method has the characteristics of simple operation, visual measurement result, small measurement error and the like.

The invention discloses an automatic gain control circuit and a signal processing system, wherein the clock module of the automatic gain control circuit provides only one working clock to a reversiblecounter; in comparison with the use of the multi-clock to realize the adjustment of the gain change rate, the automatic gain control circuit realizes the adjustment of the gain change rate by changing the number of the counting units participating in counting in the reversible counter, so that the problem that the error between an actual compression rate or an actual release rate and a preset compression rate or a release rate is large, which is caused by switching of the clock signals in the multi-clock system, is solved, and the problem that the output signal of the reversible counter causes deviation is avoided. Further, a clock signal with a higher frequency can be selected as a working clock in practical application so as to avoid the timing error occurring when the signal to be processed is closer to a set compression threshold value, so that the requirements of application scenes with high precision requirements can be met.

The embodiment of the invention discloses a pressure testing method and device, computer equipment and a computer readable storage medium. The method is applied to the technical field of performance testing, and comprises the following steps: sending a test instruction to a preset number of test terminals; receiving test data returned by the to-be-tested server, and judging whether the load of theto-be-tested server at the test time is equal to a preset safety load threshold value or not according to the test data; if not, determining the feature number of the test terminals in the next testaccording to the test data returned by the to-be-tested server; Taking the feature number as a new preset number, and continuously sending a test request to a preset number of test terminals; And if yes, the test result is output, so that on one hand, the time error of manual operation is avoided, and the accuracy of the pressure test result is improved. And on the other hand, the number thresholdvalue of the terminals to be tested which can be simultaneously served by the server to be tested can be determined, and the compression resistance condition of the server to be tested is reflected more intuitively.

The invention provides a full-automatic leveling machine. The machine comprises a feeding conveying belt (1), a rack (2), an inlet supporting plate (203), an upper leveling roller (204), a lower leveling roller (205), an upper leveling roller motor (201), a lower leveling roller motor (202), a control box (206), an outlet supporting plate (209) and a discharging conveying belt (12). Through multiple inlet roller detectors and multiple outlet roller detectors, plate detection is carried out on inlet and outlet leveling, flatness of a needed plate is adjusted through the corresponding leveling rollers, comprehensive detection on multiple points on in the same level can be carried out, the comprehensive adjusting value is calculated, the adjusting range consistency is good, leveling is precise, rapid and convenient, the control box controls motion of the feeding conveying belt and the discharging conveying belt, feeding and discharging are cooperated with the leveling machine, labor forceof manual carrying is omitted, and the time error during manual carrying can be avoided.