97results about How to "Guaranteed synchronicity" patented technology

The invention embodiment provides a data synchronization method which comprises data update records that the data synchronization center obtains from each operation and the corresponding marks for successful update of operational data items in each data update record. The method includes the following steps: the data synchronization center inter-compares each update record to find out the data item that only is contained by some operation data update records and not by other operations; the other operations are objective operations; the data synchronization center sends a notification of updating the content of the data item to the objective operations, wherein the notification carries the updated data content of the data item obtained by the data synchronization; the objective operations update the saved data content of the data item after receiving the notification. The invention embodiment further provides a synchronization device. The technical proposal of the invention embodiment can as far as possible guarantee the data content synchronization of the data item which needs to be maintained synchronization by each operation.

The invention discloses a clamp applicable to machine tools. The clamp applicable to the machine tools comprises a clamping table and a clamping mechanism, the clamping mechanism comprises at least two clamping blocks and a clamping block drive structure, and the clamping blocks are arranged in the circumference direction of an insertion hole at even intervals. The clamp applicable to the machinetool is characterized by further comprising a rotation drive mechanism for driving the clamping table to rotate; the rotation drive mechanism comprises a base, a rotation drive rod, a rotation drive gear and a rotation driven connecting piece; the rotation drive rod is rotationally installed on the base, one end of the rotation drive rod is a rotation drive end, and a rotation drive gear is coaxially fixed to the other end of the rotation drive rod; and the lower surface of the clamping table is rotationally connected with the base, and the rotation driven connecting piece is fixedly installedto the lower surface of the clamping table and connected with the rotation drive gear in an engaged mode. The clamp applicable to the machine tools has the clamping and rotating functions and furtherhas the advantage of simple, compact and reasonable structure.

The invention relates to a nano pulse signal acquiring method. The novel acquiring method for nano pulse signals includes measuring the start and the end of a pulse to be measured in a sampling period in section and in group by matching an internal reference elapsed time clock with a sampling clock, dividing the pulse to be measured into a start section, a middle section and an end section, and obtaining the start pulse with and the end pulse width with high accuracy. Pulse counts t1, t2, t3, t4 and t5 at the front end and the rear end of the sampling clock can be accurately measured. An internal clock with high-frequency and high-accuracy chips is utilized as a reference clock, and the method of single chip integration guarantees miniaturization design of hardware and real-time of acquisition. The nano pulse signal acquiring method overcomes the defect that the front end and the rear end can not be acquired in a traditional method, and has high accuracy and real-time.

The invention discloses a method and device for updating task content in a project task plan system. The method comprises the following steps: setting up a corresponding task output record for a taskin a project task plan system in advance; relating an order form and the corresponding task in the project task plan system when an order form creation is detected; utilizing business data in the order form to update the task output record corresponding to the task related with the order form after that the order form receives the business data is detected, wherein the task output record comprisesany one of actual output material, actual output number, actual start time, actual finish time, target receipt information and progress information or the combination of the actual output material, the actual output number, the actual start time, the actual finish time, the target receipt information and the progress information. The invention ensures that the actual task content in the project plan system and the actually executed business data of the task keep synchronous.

The invention relates to a sub-microsecond multipath synchronization triggering method. The method comprises steps that when a triggering pulse generated by an apparatus reaches an action end, an echo signal will returns to the output end of an original signal along the path the same as that of the original signal; and through detection and analysis of the apparatus, detection and estimation of transmission delays of the triggering signal are finished. The invention also discloses a sub-microsecond multipath synchronization triggering device. According to the invention, based on the same-path echo detection technology, the device and the method have a detection function of the signal transmission path delays and are capable of achieving real-time monitoring of path delays of the triggering signals; in the triggering method, based on the maximum tolerance principle, by use of the delay compensation technology, high precision synchronization of triggering signals at the acting moment is achieved; and effects caused by difference of multiple transmission paths can be effectively avoided without ensuring that the signal transmission paths are symmetrical highly.

The invention relates to a worm steering type rotary speed reducer for multi-point drive tracking. The speed reducer comprises a plurality of worm and gear rotary driving devices (1) arranged front and back at intervals, wherein each worm and gear rotary driving device (1) comprises a base (11), each base (11) comprises a shaft shell (111) and a base ring (112), a worm (12) is arranged in each shaft shell (111), a gear shaft (13) is arranged in each base ring (112), the worms (12) mesh with the gear shafts (13), and a main beam (5) is arranged between the gear shafts (13) of every two adjacentworm and gear rotary driving devices (1). According to the speed reducer, a mode that the worm and gear rotary driving devices and gear boxes are used in combination is adopted, the gear boxes are driven to output transmission power through bevel gears installed on the worms, and parallel driving of the plurality of worm and gear rotary driving devices is achieved.

The invention relates to a power-off synchronous operation method and system for a frequency converter. The method includes the steps of: S1. monitoring bus voltage in real time by a host frequency converter, and entering Step S2 when the bus voltage is smaller than a preset power-off synchronization value V<llimit>; S2. detecting real-time voltage V of a bus, and calculating actual deceleration time T* according to the real-time voltage V and a preset target voltage V<target>; S3. adjusting the operating frequency of the host frequency converter according to current operating frequency and the actual deceleration time T* calculated in S2, so that the bus voltage is stabilized at the preset target voltage V<target>; and S4. when the operating frequency of the host frequency converter is larger than zero, outputting the operating frequency to slave frequency converters which control operating frequency of themselves to be synchronous with the received operating frequency, and skipping to the Step S2. According to the power-off synchronous operation method, after power-off, the bus voltage is automatically increased and is maintained at the target voltage V<target> in real time, thereby guaranteeing normal operation of a motor, systems with various load inertia are automatically adapted to, and synchronization of slaves is guaranteed.

The invention relates to a video teaching method, which based on a video teaching system. The video teaching system comprises a storage module, a user interface module, a video switching module, a video calling module and a video synchronizing module. The storage module is used for storing course video; the user interface module is connected with a user terminal; when receiving the play mode switching command from the user terminal, the user interface module acquires the information of the current play position of a current course video, providing the video synchronizing module with the information of the current play position of the current course video, extracting the information of the target play mode from the play mode switching command and providing the video switching module with the information of the target play mode; and the video switching module switches the current course video to the target course video according to the information of the target play mode. The system and method provided by the invention can bring more course watching modes for course watching users, thereby bringing better user experience.

The invention provides a spinning method of regenerated polyester full-dull FDY filaments. The method comprises the following steps that A) a recycled old polyester bottle is pretreated to obtain regenerated polyester bottle pieces; B) after titanium dioxide dull master batches are dried, the titanium dioxide dull master batches and the regenerated polyester bottle pieces enter a screw rod to be melted so as to obtain a mixed melt; C) the mixed melt is homopolymerized after being subjected to primary filtration and then is subjected to secondary filtration; and D) the melt obtained in the stepC) is spun and then tow drawing is performed to obtain the regenerated polyester full-dull FDY filaments. The invention provides the spinning method of the regenerated polyester full-dull FDY filaments, the method can realize uniform mixing of polyester raw materials and the titanium dioxide dull master batches, the uniformity of the melt is ensured, finally the spinning process is smoothly carried out, and the performance of the filaments is ensured.

The invention discloses a satellite on-orbit telemeasuring data real-time monitoring system applicable to a unidirectional communication network. The system comprises an on-orbit telemeasuring data source end network monitoring module, a unidirectional network transmission module, an on-orbit telemeasuring data application side network monitoring module. The on-orbit telemeasuring data source endnetwork monitoring module comprises a telemeasuring receiving end, a data receiving server, a file server, an on-orbit real-time monitoring terminal and a database; the unidirectional network transmission module comprises a unidirectional network gate, a data synchronization server and a file synchronization server; and the on-orbit telemeasuring data application side network monitoring module comprises a file server, a message notice server, a database, an on-orbit telemeasuring monitoring terminal and a notice terminal. The satellite on-orbit telemeasuring data real-time monitoring system applicable to the unidirectional communication network provided by the invention can achieve real-time monitoring of the satellite on-orbit telemeasuring data of the unidirectional communication network, provides data storage services for two ends of the network, and provides a data synchronization mechanism to ensure synchronism of the data at two ends.

The invention relates to the technical field of cranes and discloses a single and double girder crane trolley of an electric hoist. The single and double girder crane trolley comprises a trolley frame, wherein the front part of the vehicle frame is connected with two driven wheels by virtue of a driven rotary shaft, the back part of the vehicle frame is connected with two driving wheels by virtue of a driving rotary shaft, and the driving rotary shaft is linked with a motor. As one motor drives the two driving wheels so as to drive the single and double girder crane trolley to run, the synchronism without off tracking of the trolley in the running process is ensured, the manufacturing cost is also lowered, and the working efficiency is improved.

The invention discloses a two-trigger type injection molding machine brake mechanism, comprising four brake nuts and a drive cylinder, wherein the four brake nuts are divided into an upper group and a lower group in the same structure; each group of the brake nuts are divided into a left brake nut and a right brake nut; one end of the drive cylinder is fixed on the right-half brake nut of the left brake nuts; the piston rod of the drive oil cylinder is connected with the left-half brake nut of the right brake nuts; the left-half brake nut of the right brake nuts is connected with the right-half brake nut of the left brake nuts through a connection rod; and the right-half brake nut of the left brake nuts is connected with the left-half brake nut of each right brake nuts through a connection rod and a synchronous connection mechanism. The brake mechanism has the advantages of ensuring the synchronism of the operation of the brake mechanism and shortening the operation cycle of the brake mechanism, thereby saving the cost of the overall brake mechanism.

The invention discloses a communication network time service method based on a PTP time synchronization signal. The method comprises the following steps: step S1, producing an initial clock frequencysignal, and generating a local initial PPS signal according to the initial clock frequency signal; step S2, acquiring a main clock PPS signal, and comparing the main clock PPS signal with the local initial PPS signal, regulating the initial clock frequency signal according to a comparison result so as to obtain a standard clock frequency signal, and generating a local check PPS signal according tothe standard clock frequency signal; step S3, performing frequency division on the standard clock frequency signal to obtain a frequency-dividing clock frequency signal, and preforming the frequency-division on the frequency-dividing clock frequency signal to obtain a high-precision clock frequency signal; and step S4, producing a PTP clock synchronization message timestamp according to the high-precision clock frequency signal and the local check PPS signal, and analyzing the PTP clock synchronization message timestamp to produce the local time. The method and system disclosed by the invention have the technical effect of being high in reliability and synchronization.

The invention provides a distribution image display method which includes the steps that (1) an image server divides the whole image into a plurality of image sub-blocks equally according to the size of the user-defined image sub-block; and then each image sub-block is encoded; (2) the client sends a request; the image server sends the encoded data of all the image sub-blocks contained in the request region to the corresponding client according to the request region of the client; when the encoded data is sent, the image server sends the redundancy data to the client; (3) the client receives data from the server, including the encoded data and the redundancy data and displays the image data of the former frame. The distribution image display method can reduce the CPU load and the network load of the image server and guarantee the synchronism of the distribution image display.

The invention provides a sewing machine, and belongs to the technical field of sewing machines. The problem that for an existing sewing machine, after a thread is cut, the thread residue left on cloth is longer is solved. The sewing machine comprises a base plate and a machine shell, a frame needle is arranged on the machine shell, a lower shaft and a drive shaft are rotatably connected in the base plate, the end of the lower shaft is rotatably connected with a moving blade frame, a moving blade is fixedly connected to the moving blade frame, the drive shaft is in drive connection with the moving blade frame and can drive the moving blade frame to rotate, a fixed blade is connected with the base plate in a sliding mode, a drive plate is hinged to the base plate, the edge of the moving blade frame is provided with a guide surface in the circumferential direction, a tension part is connected to the drive plate, the distance between the guide surface and the shaft axis of the lower shaft is gradually decreased from one end to the other end, and when the moving blade frame rotates and enables the moving blade to move to the direction of the fixed blade, the drive plate can enable the fixed blade to be close to the frame needle. By means of the sewing machine, the thread residue which is cut is shorter, and the thread cutting quality is improved.

The invention relates to a slitting system for papermaking and a papermaking slitting method thereof. The slitting system for papermaking comprises a supply roller used for installing paper rolls, a cutter used for cutting paper and a rewinding roller used for rewinding the paper and provided with at least two rewinding parts; the slitting system for papermaking is characterized by comprising at least two tidying parts and a driving device, wherein the tidying parts are movably arranged on the rewinding roller and are used for tidying the ends of the paper rolls on the rewinding parts, and thedriving device is used for driving the tidying parts to move. The slitting system for papermaking and the papermaking slitting method thereof have the beneficial effects that the tidying parts can bedriven by the driving device to move on the rewinding rollers, and one ends of the paper rolls on the rewinding parts are tidied, so that the winding effect of the paper rolls is better.

The invention discloses a blue-green algae separation apparatus for sewage treatment. The blue-green algae separation apparatus for sewage treatment is characterized in that the separation apparatus comprises a separation pipe, a pulse vibrator and an algae collection pipeline, filter pipes are arranged in the separation pipe in a sleeving manner, the pulse vibrator is fixed on the pipe wall of the separation pipe, the algae collection pipeline also comprises algae collection branch pipes which communicate with the separation pipe, and the algae collection pipeline realizes pipeline communication with a main through the algae collection branch pipes. An adopted novel method combining pulse electromagnetic valves with pulse vibration can efficiently filter blue-green alga in a water body when the algal bloom of the blue-green alga breaks out. During use, sewage is directly introduced into through a water inlet, and is discharged out after being filtered, and blue-green alga can be effectively filtered. Moreover, operation is convenient, and workers only need to collect blue-green alga on time. The apparatus provided by the invention has a remarkable significance in application and popularization for the large-scale treatment of blue-green algae sewage.

The invention relates to the technical field of diesel locomotives, in particular to an assembly welding conversion device for a locomotive end part beam. The assembly welding conversion device comprises rotary tables, support seats, a guide rail, a transmission device and a base, wherein the guide rail is mounted on the base; the rotary table and the transmission device are mounted on the support seats; the support seats are connected onto the guide rail through T-shaped bolts; the two support seats are distributed at the front end and the rear end of the base in parallel; each support seat is provided with two side shielding guide posts on the outer side, and two rollers on the inner side. The two rotary tables are designed to conduct end to end clamp on a processed beam, and are driven to rotate by 360 degree through the transmission device; all-directional conversion and overturn of the processed vehicle beam are realized; the structure is stable; overturn is smooth; welding operation can be conducted on each part of the processed vehicle beam easily; labor intensity of a worker is reduced greatly; assembly welding efficiency and quality are improved.

The invention provides a small wind turbine pitch change device. The device mainly comprises a driving mechanism, a transmission module, a pitch change module, a return torsion spring, a rotating box body and a hub. The driving mechanism is connected with the transmission module through key connection; the transmission module is connected with the pitch change module through bevel gear transmission; the pitch change module is connected with the rotating box body through a screw; and one end of the return torsion spring is connected with a transmission shaft, and the other end is fixed on the rotating box body. The device achieves a function of flexibly adjusting a pitch angle, increases the utilization rate of wind energy, and improves the pitch change stability and synchronization at the same time.

The invention discloses a realization method for synchronously reading capacitance sensors by multiple board cards, which belongs to the technical field of signal acquisition and data communication in a high-precision motion control system and aims at solving the problem that synchronization can not be ensured and a micropositioner thus has poor control precision when multiple paths of capacitor data are read in the prior art. The method comprises the following steps: 1, when a motion control card receives a rising edge of a synchronous trigger signal, three capacitance sensors send currently-measured data to board cards, the data arrive at pins of an FPGA module via a serial port level conversion circuit and are stored in a two-port RAM, and after data receiving is completed, a receiving completion signal is outputted; and 2, the generated receiving completion signal triggers a DSP module to be interrupted externally, the data stored in the two-port RAM are read to the DSP module in a DSP module interruption program, and the process of reading signals of the multiple paths of capacitance sensors synchronously is completed.

The invention relates to the technical field of communication and particularly relates to an electronic device, comprising a playing assembly. The playing assembly comprises a body, wherein the body has at least two audio cavities, the audio cavities are mutually isolated, and a plurality of audio cavities comprise a first audio cavity and a second audio cavity; a processor which is used for generating a plurality of mutually independent control signals, wherein the control signals comprise a first control signal and a second control signal; a loudspeaker which is electrically connected with the processor and is used for outputting an audio signal according to the first control signal; and a vibrator which is electrically connected with the processor, wherein the vibrator can vibrate relative to the body according to the second control signal, one of the loudspeaker and the vibrator is set in the first audio cavity, the other one is set in the second audio cavity, and the loudspeaker and the vibrator can be in a playing state at the same time. According to the electronic device, audios and vibration can be played at the same time, and moreover, a synchronous playing effect of the audios and the vibration also can be ensured, so the user experience is improved.

The invention relates to a heat-preservation die and a heat-preservation construction method for an ultra-low temperature pipeline, and particularly discloses a heat-preservation die and a heat-preservation construction method for an ultra-low temperature pipeline, which are applied to a hydrogen-fueled system of a rocket. By the heat-preservation construction method for the ultra-low temperature pipeline, the phenomena of dropping, cracking, frosting and the like of a heat-preservation layer and the pipeline caused by the cooling shrinkage of the pipeline can be prevented. The method comprises the following steps: a, mounting the heat-preservation die for the ultra-low temperature pipeline on the ultra-low temperature pipeline; b, filling heat-preservation pulp into the heat-preservation die for the ultra-low temperature pipeline; c, after the heat-preservation pulp is solidified to form the heat-preservation layer, disassembling the heat-preservation die for the ultra-low temperature pipeline. According to the heat-preservation die and the heat-preservation construction method for the ultra-low temperature pipeline, a release agent and release cloth are used as a release lining, and the release time is strictly controlled, so that the forming quality of a heat-preservation material is ensured; during heat-preservation construction, the whole pipeline is coated with a special anti-freezing solution, so that the synchronism of contraction and expansion processes between different materials is ensured.

The invention discloses an automatic tensile testing device with large circumferential area and adjustable draw ratio and an automatic tensile testing method for films. The automatic tensile testing device comprises a clamp, a driving device, an aluminum alloy stand, a film releasing device and a control console, wherein the driving device consists of a screw rod, a stepper motor, a stepper motordriver and a switching power supply; the film releasing device consists of a film releasing platform and a lifting platform; during use, a film is cut to a certain size and then is putted on the filmreleasing platform; after the film is clamped by a clamp, the stepper motor is started; a sliding table on the screw rod drives the clamp to uniformly outward draw and finally the film with certain draw ratio and better uniformity is obtained.

The invention discloses a control method for an asymmetric structure lower flexible teleoperation system. The control method comprises the steps that an n-dimension asymmetric structure lower flexibleteleoperation system model is set up; the position synchronous error variable of a master robot and a slave robot is defined under network communication time-varying delaying, and a new master and slave robot control method with input time delaying is designed based on the definition; and based on a linear matrix inequality, stable time-lag relevant stability conditions of the teleoperation system are given, and the stability and synchronism of the teleoperation system are guaranteed when outside input force is zero. According to the control method, stable operation under the performance asymmetric structure and time-varying asymmetric time-varying delaying of the flexible teleoperation system is guaranteed, and therefore the flexibility and practicality of the system are improved. The control method is simple, only the position and speed information of a motor is utilized, and therefore the practicality of the control method is improved.

The invention relates to a data transmission method and system for a terminal and earphones, and the earphones comprise two independent wireless earphones, and the method comprises the steps: respectively building communication connection with the two wireless earphones based on radio waves of different frequency bands; acquiring all data packets sent to each wireless earphone by the terminal; sending all the two paths of data packets to the respective corresponding wireless earphones in sequence at the same time according to respective preset sequences; respectively verifying the first data packet and the second data packet which are successively and continuously received by each wireless earphone; and if the first data packet and the second data packet received by each wireless earphoneare verified to be correct and the first data packet and the second data packet are different, analyzing the first data packet to play the audio information contained in the first data packet. The beneficial effects of the invention are that the method reduces the burden of mutual communication of two earphones in the prior art, also reduces the delay time of audio playing and the power consumption of a wireless earphone, and improves the cruising ability.

The invention discloses a bluetooth headset based on the BLE protocol which comprises a first Bluetooth headset body and a second Bluetooth headset body, and the two Bluetooth headset bodies each comprise a main control module, a power module, an audio collecting and processing module, an audio output module, an electrostatic protection module, a classic Bluetooth module and a BLE Bluetooth module, and the power module, the audio collecting and processing module, the audio output module, the electrostatic protection module, the classic Bluetooth module and the BLE Bluetooth module are connected. Wherein the first Bluetooth earphone is in communication connection with a mobile phone through the classic Bluetooth module, and the first Bluetooth earphone is connected with the second Bluetoothearphone through the BLE Bluetooth module. According to the invention, communication transmission between the two Bluetooth headset bodies is carried out through the BLE Bluetooth module; The Bluetooth headset has the advantages that transmission of audio data is achieved, wireless packet loss detection is performed on transmitted audio data packets through the main control module on the Bluetooth headset, data integrity in the transmitted audio data packets is judged, audio playing synchronism is guaranteed, audio data playing effect is greatly improved, and satisfaction degree of users in use is increased.

A live stream slice synchronization method is provided, which is based on a live stream slice synchronization system. The live stream slice synchronization system includes a plurality of slice servers, and the slice servers are in one multicast group. The method includes: synchronously executing slicing flow by each slicing server. In the present application, it is possible to achieve synchronization of slices by the slice servers in the above manner.

The invention discloses a precision synchronous multi-spindle drill bit. The precision synchronous multi-spindle drill bit comprises an L-shaped base, two slide rail assemblies are arranged on the horizontal part of the L-shaped base in parallel in the length direction, a sliding support mechanism capable of sliding along the two slide rail assemblies is arranged on the two slide rail assemblies,a hydraulic drive mechanism for driving the sliding support mechanism to slide along the two slide rail assemblies is arranged on the outer side of the vertical part of the L-shaped base, the drivingpart of the hydraulic driving mechanism penetrates through the vertical part of the L-shaped base and is connected with the sliding support mechanism, and the sliding support mechanism is provided with a drill bit assembly for synchronously drilling a porous pipe and a power driving mechanism for driving the drill bit assembly to work. The multi-spindle drill bit has simple structure and convenient maintenance, can accurately locate drilling positions, ensures the synchronization of the drilling process and the working stability and high output rate of the whole drill bit in an idler gear transmission mode, and can meet requirements of products on functions and quality.

The invention discloses a distributed power transformer winding state monitoring method and system based on a vibration method. A vibration acquisition unit is installed beside a transformer by adopting a distributed architecture to obtain a vibration signal, and the vibration signal is sent to an upper computer through an optical fiber after analog-to-digital conversion; a current and voltage acquisition device is installed at a secondary terminal of a transformer to acquire a current signal and a voltage signal, the current signal and the voltage signal are sent to the upper computer through an optical fiber after analog-to-digital conversion, the upper computer sends a clock synchronization command to the vibration acquisition unit and the current and voltage acquisition unit, the acquired information is processed and analyzed through a built-in algorithm model, and the health state of the winding is judged. By collecting and transmitting the signals in the mode, the problems of amplitude attenuation and electromagnetic interference caused by direct transmission of electric signals can be effectively avoided, and meanwhile, the synchronism of remote signal sampling is also ensured. The system is low in coupling degree and high in expandability, and can be applied to various occasions such as transformer substations and test rooms.

The invention belongs to the technical field of food machinery manufacturing, and relates to a manual noodle rubbing machine. The machine includes a fixed bracket, a motor installed at the lower part of the fixed bracket, a reducer, a swing pressing device located at the upper part of the fixed bracket, and a rotating roller assembly installed in the middle of the fixed bracket; wherein, the motor transmits power to the rotating roller assembly through the reducer , At the same time, the motor transmits power to the swing noodle pressing device through the large pulley, so as to realize the automatic noodle rubbing work, which greatly reduces manpower and material resources.