65results about How to "Occupancy time is short" patented technology

The invention relates to a method for dispatching a soft real-time timer and a module thereof, which comprises a dispatching unit, an interrupting unit, an initializing unit and a management unit. The dispatching unit is used for controlling a timer dispatching thread of a set up soft real-time timer, and the inside of the dispatching unit is an unlimited circulation body always obtaining counting semaphores; the interrupting unit is used for controlling the interrupting of the timer and releasing the counting semaphores; wherein, the dispatching unit is synchronous with the interrupting unit through a counting semaphore; the initializing unit is used for initializing overall variation of the timer so as to connect the interrupting unit and interrupting signals of a hardware clock and to initialize the dispatching unit; the overall variation comprises the counting semaphores; the management unit is a front desk window for users to control the timer, and users set up various soft real-time timers through the management unit and then set various operation instruments for the timer. By applying the invention, through an information mechanism, when the timer sends out appointed information to a senior user at time, the portability of a cell phone platform and various demands of the senior user on the cell phone platform can be met.

Disclosed are a comb-shaped parking rack (1) for a parking garage and a suitable conveyance bogie (3), wherein the comb-shaped parking rack (1) comprises bases (1_1), rails (2) are provided on the ground between adjacent bases (1_1), longitudinal and transverse rails (2) intersect in a cross shape, a guide wheel channel (2_3) is provided at the intersection point of the longitudinal and transverse rails (2), an upper part of the bases (1_1) is provided with an overhanging comb beam (5_1), a side of the comb beam (5_1) is provided with comb teeth (6_1), and a space for the conveyance bogie (3) to travel and change direction is provided below the comb beam (5_1) and the comb teeth (6_1). A comb-shaped access frame (4) is provided on a vehicle frame (3_1) of the conveyance bogie (3) and the comb-shaped access frame (4) comprises a lifting column (4_1) and a comb beam (5_2) provided with comb teeth (6_2). The parking rack and the conveyance bogie can flexibly select a rational path to convey a vehicle so as to avoid obstacles, effectively reducing the time in accessing the vehicle, and increasing the vehicle storage density of a planar site.

The present invention relates to a method of the accurate frame synchronization for water sound communication mainly comprising the following steps: 1) digital processing of the received signals, respectively using the copy of Su (t) and Sd (t) to make a relevant processing of the copy of the received signal R (t) and respectively calculating the absolute values of the relevant functions |Cu (t)| and |Cd (t)|; 2) comparing |Cu (t)| & |Cd (t)| with one set threshold; if the result is smaller than the threshold, it will return to step 1) and make a relevant processing; if |Cu (t)| and |Cd (t)| surpasses the threshold, the result is regarded as the arrival of the synchronous pulse and then the calculation can turn to step 3; 3) calculating Tu and Td corresponding to the biggest value of |Cu (t)| and |Cd (t)| and also calculating the interval delta of the two relevant peak positions and then calculating relative Doppler beta; 4) calculating the central point of the two relevant peak positions and take it as the starting point of the time for the synchronous signals. The advantages of the invention are as follows: providing the accurate estimation values of the Doppler and the arrived time, which are very important to the water sound communications under certain conditions and can enhance the communication results. In addition, the invention can greatly reduce the volume of calculation for deciphering.

A technology for manufacturing the jointer of multi-way pipe includes cutting a through pipe by needed length, filling the fused low-smelting-point medium in the pipe, cooling to become solid, sealing both ends by the plastic film with central hole, wrapping the pipe surface by plastic film, putting it in shaping die, and using two punch heads to press the both ends of pipe to become said jointer.

There is provided a packet joining method, program, and apparatus with an increased wireless utilization efficiency and a reduced packet delay. The packet joining method includes a step of performing Neighbor Discovery within a range reachable in one hop to detect neighboring audio terminals which are connectable over short-range radio and acquiring call information including audio session information such as whether the detected audio terminals are busy with respective calls and packetization period information and wireless transmission rate information, a step of selecting one as a joining destination from the list of detected connectable audio terminals on the basis of the call information by the criteria that occupancy time of wireless transmission becomes short and that a packet delay at the time of joining becomes small, a step of requesting packet joining of the selected audio terminal as the joining destination, and a step in which an audio terminal as a joining source starts a voice cal upon receipt of a positive response from the audio terminal as the joining destination in response to the request for joining.

The invention discloses a method for fast diagnosing direction connection of a big power rectifier switch tube online, comprising steps of collecting practical output direct current value id (t0) of the rectifier at the moment of t0 and an instantaneous value ia (t0),ib (t0) and ic (t0) of three-phase input current at the moment to, calculating a theory output direct current value id'(t0) of the rectifier at the t0 moment according to the ia (t0),ib (t0) and ic (t0), comparing the id'(t0) and the id (t0), wherein when the id'(t0) is greater than the k1*id(t0), the rectifier has the switch tube direction connection fault, and the k1 is a set measurement reliable coefficient. The method disclosed by the invention is simple, has no complicated process, can perform the fault diagnosis only through comparing two data. Correspondingly, the diagnosis period is short, and the period from starting diagnosis and ending the diagnosis is very short. That is, when the rectifier is faulted, the trip protection occupies short time, which can effectively protect the rectifier and prevent the fact that the device is damaged because of operating for long time under the fault condition.

The invention discloses a method for reinforcing a foundation bolt of an iron tower, belonging to the field of communication infrastructure maintenance. The method comprises the steps: determining the quantity and diameter of reinforcing steel bars; removing rust on the surface of an original foundation bolt, coating the surface with a protective coating, and padding a supporting block under a bottom flange; drilling steel bar embedding holes corresponding to the quantity of the reinforcing steel bars in the top surface of original foundation concrete, wherein the steel bar embedding holes are uniformly distributed along the outer circumferential direction of the original foundation bolt; cleaning the steel bar embedding holes and pouring an anchor adhesive into the steel bar embedding holes, and then inserting the reinforcing steel bars; chiseling the contact surface of the original foundation concrete, and then binding the reinforcing steel bars to form a steel bar cage; and setting up templates on the outer side of the steel bar cage and pouring concrete. Compared with the traditional demolition and reconstruction scheme, the method has the advantages that the cost is reduced by 90% or over, and the communication operation cost is greatly saved; the service needs of operators can be seamlessly connected, and no influence on communication exists.

The invention relates to a chlorpyrifos detecting method and device by a terahertz wave spectrum combining with a biosensing technique, which have the characteristics of high accuracy and quickness and convenience in detection. According to the technical scheme, the chlorpyrifos detecting method comprises the following steps: (1) cleaning quartz slides; (2) modifying the surfaces of the quartz slides; (3) activating the surfaces of the quartz slides; (4) fixing an antibody; (5) sealing excessive position points on the surfaces of the quartz slides; (6) fixing chlorpyrifos; (7) collecting the terahertz time domain wave spectrums of to-be-detected points and reference points on the quartz slides; and (8) comparing the terahertz time domain wave spectrums of the to-be-detected points and the reference points on the quartz slides. The chlorpyrifos detecting device comprises a terahertz time domain wave spectrum system, a motor and the quartz slides.

The invention provides a conference sign-in system based on bar code, the conference sign-in system comprises a sign-in unit which can be taken as a sign-in service client and used for recording the conference sign-in information through a bar code mode; a data processing unit which can be taken as a background server end of sign-in service and used for analyzing and performing statistics on the sign-in information recorded by the sign-in unit to realize a data management function; and a display unit which is electrically connected to the data processing unit and used for real-time display of sign-in information. The conference sign-in system based on the bar code has the advantages of short occupation time of information acquisition work at early stage, high efficiency and easy realization; a DES encryption mode is employed, so that system security is increased; by querying and contrasting the original record, repetitive signing or sign-in of no recorded person is forbidden, so that falsification can be avoided. The conference sign-in system is suitable for sign-in requirement of most conferences, is capable of conveniently recording the sign-in information of conference organizers, simplifying the sign-in flow, and realizing informatization of the conference sign-in flow.

The invention discloses a pre-sorting type cross belt sorter system and a sorting method thereof, and belongs to the technical field of automatic sorting of logistics express. The pre-sorting type cross belt sorter system comprises a cross belt sorter, a pre-sorting device and a control system, the pre-sorting device comprises a pre-sorting table trolley, a first pre-sorting conveying belt, and asecond pre-sorting conveying belt and a pre-sorting identification device, the pre-sorting identification device is arranged near the pre-sorting table trolley, and the pre-sorting table trolley is provided with two parcel discharging openings which are connected with the corresponding first pre-sorting conveying belt and the second pre-sorting conveying belt through a parcel sliding way. The pre-sorting identification device is connected with the control system for identifying express sheet information of parcels on the pre-sorting table trolley to determine the parcel discharging direction of the parcels on a loop line trolley, and the control system controls the pre-sorting device to send the parcels to a parcel feeding table A or a parcel feeding table B with the shortest running distance. According to the pre-sorting type cross belt sorter system and the sorting method, the parcels are pre-sorted, so that the parcels are discharged on the side close to the parcel feeding table, and the sorting efficiency of the cross belt sorter is greatly improved.

The invention discloses a running type underwater drilling template of a drilling ship in a marginal oil-gas field, which comprises a main body framework and an accessory of the drilling template, wherein the main body framework is a rectangular framework body consisting of horizontal rods and vertical rods which are fixed together; the main body framework is provided with a vertical well hole sleeve two sides of which are fixed with pile pipe sleeves; and slanting knightheads are arranged in the rectangular frameworks which are formed between the horizontal rods and between the horizontal rods and the vertical rods. A method for manufacturing and mounting the underwater drilling template comprises the following steps: (1) manufacturing the underwater drilling template from both the upper part and the lower part simultaneously, and then welding the upper part and the lower part together; and (2) using a hoisting device to be connected with a cutting sleeve device on the top of the underwater drilling template and a lifting lug so as to hoist the underwater drilling template into water, wherein the convergence points of a hoisting rope in the hoisting device after the hoisting rope is straightened up are always positioned on the plumb line of the underwater drilling template so that the underwater drilling template is always kept in a horizontal state to get to the preset place on the sea floor. The underwater drilling template has the advantages of stable structure, reasonable stress, and lightened weight; the method for manufacturing the underwater drilling template can shorten the construction period; and the method for mounting the underwater drilling template is safe, smooth and convenient, requires fewer resources, and has low cost.

The invention discloses a method for transmitting data on a cell phone through a USB interface, the method comprises first, establishing a static-state global sending queue and a static-state global sending queue, second, if data are sent from the USB interface, and placing a data packet which wants to be sent in the sending queue and sending in turn, third, if data are received from the USB interface, and then placing the data packets which are received in the receiving queue in turn, checking whether the receiving queue contains data packets, if contains, and then taking out data packets from the queue and relatively processing. Time occupying for sending or receiving function is shorter through adopting the invention, and the invention greatly improves the utilization ration of CPU, which fastens the speed of data processing, improves real-time performance of data transmission and increases data throughput, and the invention utilizes a static-state global queue to be a data buffer area, which not only solves the circumstance that when speed between USB equipment and a USB host machine is not matched, packet losing happens, but also memory fragments can not be generated.

The embodiment of the invention provides a smart home equipment management method and device, and relates to the technical field of smart home equipment. The smart home equipment management method comprises the steps of determining a target room according to a user instruction; generating a room editing interface with an equipment list according to information of the target room and preset household equipment information, wherein the equipment list includes a corresponding relation between equipment names of all smart home equipment at home and placement rooms; determining target equipment from the equipment list according to another user instruction; generating an equipment management instruction according to the identification of the target room and the identification of the target equipment, wherein the equipment management instruction is used for establishing or canceling or changing the corresponding relation between the target room and the target equipment; sending the equipmentmanagement instruction to the network; and receiving and displaying a management result of the target equipment. The smart home equipment management method and device are simple in management process,short in occupation time of mobile terminal resources and capable of avoiding the waste of resources.

The invention discloses a docking mechanism. The docking mechanism comprises a docking rack and an installing plate, wherein the installing plate is provided with a first clamp seat and a second clamp seat. The first clamp seat is fixedly connected with the installing plate, the second clamp seat is connected with the installing plate in a sliding mode and is driven through a sliding driving device, the first clamp seat and the second clamp seat are both provided with a clamp positioning device and a clamp locking device, and a rotary shaft of the installing plate is horizontally arranged and located between the first clamp seat and the second clamp seat. The installing plate is driven to rotate by a rotating driving device which is installed on the docking rack. The installing plate has two rotating stop positions: a vertical state that the second clamp seat is located above the first clamp seat, and a heeling or horizontal state that the first clamp seat and the second clamp seat are both arranged on the installing plate. The invention further discloses a crystal blank automatic polishing system adopting the docking mechanism. By the technical scheme, the docking precision is high, bonding is firm, a mechanical arm structure action is convenient to design, and the docking efficiency and the processing efficiency of the whole automatic polishing system are improved.

The invention provides a wireless vehicle detection system. The wireless vehicle detection system comprises a detector which is internally provided with a wireless magnetic resistance sensor, a receiver, a relay and an intelligent data processor, wherein the detector is arranged in a hole bored at a designated position of a lane, the detector and a traffic direction are consistent, a sealant is utilized to seal the hole, vehicle existence and the vehicle passing information are detected, the detection data is sent by the detector, the receiver is used for receiving the data sent by the detector and is further used for processing the received data and transmitting the processed data, the relay is used for supporting the detector and the receiver mounted beyond a wireless access point scope of the receiver to carry out bidirectional transmission, and the intelligent data processor is used for receiving the detection data from the receiver and processing and storing the relevant traffic statistics data. According to the wireless vehicle detection system, pipeline layout is not necessary, mounting construction is simple and rapid, influence on a road surface is small, a road base is not influenced, the road surface occupation time is short, maintenance is simple and convenient, detection precision is high, the wireless vehicle detection system is stable and reliable, and the wireless vehicle detection system is not influenced by the natural environment and climates such as rain, snow, mist or night factors.

The invention relates to the technical field of gas detection, in particular to a methane sensor system. The methane sensor system comprises a plurality of movable sensing devices for being worn, wherein each movable sensing device comprises a methane sensor, a wireless receiver, a wireless transmitter and a warning device, each methane sensor is used for detecting the concentration of methane and sending out an original warning signal; the wireless receiver is used for receiving the wireless warning signal sent out from by the movable sensing device at the last level; each wireless transmitter is used for sending out the wireless warning signal of the corresponding level to the movable sensing device at the next level according to the wireless warning signal and / or an original warning signal and is connected with the corresponding methane sensor and the corresponding wireless receiver respectively; the warning device is used for sending out warning information according to the wireless warning signal and / or the original warning signal and is connected with the methane sensor and the wireless receiver respectively. Through the application of the methane sensor system, users obtain warning information and transfer wireless warning information to others at the same time level by level, so that the warning effect and the guiding capacity are notably improved.

The present invention relates to a method for accurate frame synchronization in underwater acoustic communication, which mainly includes the following steps: 1) digitally process the received signal, respectively use s u (t) and s d The copy of (t) performs copy correlation processing on the received signal r(t), and calculates the absolute value of the correlation function |C u (τ)| and |C d (τ)|2)|C u (τ)|, |C d (τ)| is compared with a set threshold, if it is smaller than the threshold, then return to step 1) for related processing, if |C u (τ)| and |C d (τ)| exceeds the threshold, it is judged that there is a synchronous pulse arrival, and the calculation is transferred to step 3; 3) Calculate |C u (τ)| and |C d The time τ corresponding to the maximum value of (τ)| u and τ d , and calculate the interval Δ between the positions of the two correlation peaks, and then calculate the relative Doppler β; 4) calculate the midpoint Λ of the positions of the two correlation peaks, and use this as the time starting point of the synchronization signal. The present invention has the advantages that accurate Doppler estimated value and time-of-arrival estimated value can be provided, and these two estimated values ​​are very important for underwater acoustic communication under certain conditions, which can effectively improve the communication effect, and can also greatly reduce the Small amount of computation for decoding.

The embodiment of the invention provides a file downloading method and a file downloading device. The file downloading method comprises the following steps of: downloading a file; receiving file downloading requests respectively sent by at least two clients, responding to file downloading requests sent by at least two clients respectively, mapping the to-be-shared file into a memory, segmenting the to-be-shared file mapped into the memory into a plurality of sub-files, respectively setting indexes of the sub-files according to a segmentation sequence, and sending the sub-files with different indexes to different target clients at the same moment so as to respectively send the plurality of sub-files to each target client. According to the method, the to-be-shared file mapped into the memoryis segmented into the plurality of sub-files, the sub-files with different indexes can be sent to different clients at the same time, and the access rate of each sub-file is very high, so that the plurality of sub-files can be quickly sent to the plurality of clients respectively, and the sharing rate of the to-be-shared file is improved.

The invention belongs to the technical field of electrified railway cable construction and provides an existing electrified railway cable commissioning construction method. The method comprises the following steps that S1, a line in a whole power supply arm range involved in cable commissioning is blocked; S2, three times of impact tests are carried out, wherein impact test preparation is carriedout before each impact test; during an impact test, one end of a to-be-commissioned cable is connected with an overhead line system located at one end of a tunnel, the other end of the to-be-commissioned cable is disconnected with the overhead line system, then a grounding wire is removed, power is supplied to a 214 feeder line, power is continuously supplied for 5 min, and whether the cable has abnormal phenomena of abnormal sound, peculiar smell and discoloration or not is observed; S3, a no-load test is carried out, on the basis of the third impact test, the state of the cable is kept to beput into operation unchanged, i.e., the no-load state is kept for 24 hours; and S4, a loading test is carried out, specifically, two ends of the to-be-put-into-operation cable are connected with contact networks located at the two ends of the tunnel correspondingly, circuit loading is carried out, and loading lasts for 24 h. According to the method, the construction quality and construction efficiency are improved.

The invention relates to a vehicular intelligent tour guide synchronization system with a GPS function. The vehicular intelligent tour guide synchronization system comprises a vehicular mainframe anda plurality of synchronization submachines and is characterized in that MP3 playing modules and identical voice tour guide audio files are arranged in the vehicular mainframe and the synchronization submachines, the vehicular mainframe and the synchronization submachines are wirelessly connected, and data communication between the vehicular mainframe and the synchronization submachines is achievedthrough wireless transceiving modules; the vehicular mainframe receives GPS, GLONASS and Beidou satellite signals to achieve automatic positioning and playing and transmits the code of a current-playing scenic spot to the synchronization submachines; the synchronization submachines receive the synchronous playing signal transmitted by the vehicular mainframe and immediately play the voice tour guide information of the current scenic spot. The vehicular intelligent tour guide synchronization system has the advantages that the system is simple in structure, clear in voice and good in system compatibility and expansibility, and the submachines do not need built-in GPS receiving modules and are low in cost; the wireless transceiving modules of the mainframe and the submachines are in a receiving state at ordinary times and do not transmit signals, and frequency interference cannot be generated easily.

The invention discloses a phase compensation control method for a complex environment. The method comprises the steps that initialization operation is carried out on a sending end and a receiving end;each time after transmission work of a system is finished, before next-time transmission work is started, the system carries out two-point scan operation, namely, the sending end fixedly sends a phase M1 in random four-phase modulation of previous transmission, the receiving end alternately loads a phase M2 and a phase M3 in the random four-phase modulation of the previous transmission, and statistics is respectively carried out on interference count of the phase M1 and the phase M2, and the interference count of the phase M1 and the phase M3; and phase compensation quantity is computed according to the two times of count, and the phase compensation quantity is superposed to a four-phase voltage of next-time transmission. According to the method, under the condition of severely changed environment temperature and vibration, long distance transmission and relatively low data sample number, high performance and high efficiency transmission can be kept. Rapid drift of the phases can be accurately compensated, system phases are compensated timely, efficiency is relatively high, consumed time is short, and a system bit error rate is low.

The invention provides a method and system for realizing single radio voice call continuity (SRVCC), relating to the communication field. The invention solves the problem that the call interruption time is too long in the SRVCC process. The method comprises the following steps that: a call continuity server sends an SRV update request in the session signalling path of a terminal when receiving an IMS (IP multimedia subsystem) transfer request and the SRV update request passes through an ALG (application layer gateway); and the ALG receives the SRV update request and updates the media path of the terminal. The technical scheme provided by the invention is applicable to the IMS network.

The invention provides an electroplating automatic line exhaust mechanism, and belongs to the field of electroplating equipment. The electroplating automatic line exhaust mechanism comprises exhaust assemblies, single-groove air flues, main air flues and fans, wherein the exhaust assemblies, the single-groove air flues, the main air flues and the fans are arranged on the two sides of the upper ends of solution tanks; each exhaust assembly is arranged corresponding to one single-groove air flue and comprises an air cover, a door cover, an air cover air cavity and an air sucking opening; the airsucking openings communicate with the interiors of the air cavities and the interiors of the solution tanks; one ends of the air cavities communicate with the single-groove air flues which communicate with the main air flues; the fans are arranged at the ends, away from the single-groove air flues, of the main air flues; and the door covers are arranged at the ends, close to the solution tanks, of the air covers, and the height of the lower end faces of the door covers is smaller than that of the air sucking openings. The electroplating automatic line exhaust mechanism is simple in structure,good in air sucking effect, free of leakage, and capable of achieving energy saving and environmental protection.

The invention provides a data processing method and apparatus, and a machine readable storage medium. The method is applied to a virtual desktop server in a virtual desktop basic architecture. The method comprises the steps of receiving user configuration information used for setting an application mode of the virtual desktop server as a first application mode, wherein the first application mode is an application mode paying attention to a picture; and in the first application mode, receiving image data sent by a VM, compressing the received image data by adopting a lossless image compressiontechnology, and sending the compressed data to a virtual desktop client for performing display.

The invention relates to the technical field of building construction, in particular to a detachable tower crane climbing device. According to the technical scheme, the detachable tower crane climbingdevice comprises a climbing frame, a climbing track and a plurality of pre-embedded parts, wherein the pre-embedded parts are pre-embedded in a building wall body; the climbing track is vertically arranged along the building wall body, the climbing track is detachably connected with the pre-embedded parts, and the climbing track is matched with an upper sliding block and a lower sliding block; the climbing track is provided with a one-way mechanism, the one-way mechanism is used for enabling the upper sliding block and the lower sliding block to slide upwards along the climbing track only ina limited mode; and the upper sliding block is fixedly connected with the climbing frame, and the climbing frame is connected with the lower sliding block through a hydraulic cylinder. According to the climbing device, when a tower crane climbs, the occupied time of the tower crane is short, the construction efficiency of the building can be improved, the repeated utilization of the climbing trackcan be realized, and the climbing device has the characteristics that climbing is rapid and convenient, and the cost is low.

The invention discloses an online monitoring system for a power transmission line and relates to a wireless passive temperature measuring system for a high-voltage switch cabinet. The system is provided with a plurality of radio-frequency transmitting collector and sensors of which the quantity is matched with that of the radio-frequency transmitting collector, wherein a monitor is connected to the radio-frequency transmitting collector; a remote control center is connected to the monitor; the monitor comprises an analog / digital converting device, a central processing unit and a digital / analog converting device which are sequentially connected; a display unit is connected to the digital / analog converting device; an alarming device is connected to the central processing unit; and the remote control center consists of a data storage unit and a data display unit. The radio-frequency transmitting collector are used for transmitting signals and the sensors can be used for passively feeding back the signals, so that the temperature in the high-voltage switch cabinet can be measured accurately and timely and the safety is high; and in addition, the sensors in the high-voltage switch cabinet passively feed back the signals and are not influenced by an electric field and a magnetic field in the high-voltage switch cabinet, and thus measurement data are accurate. Power supply accidents due to overheat of the high-voltage switch cabinet are effectively avoided.

The invention discloses a hoisting and overhead-assembling method for sections of heavy tower equipment, and belongs to the technical field of equipment manufacturing and mounting. The hoisting and over-head assembling method comprises the following steps of: mounting supporting tools on the peripheral wall, close to an assembling and welding position, of a lower section of a tower, and welding guide posts on each tool; mounting guide rings on positions, above an assembling welding seam, of a to-be-hoisted tower section, uniformly distributing the guide rings on the peripheral wall, close to the assembling and welding position, of the lower section of the tower so as to correspond to the guide posts on the lower section of the tower, hoisting the upper section of the tower to the upper part of the lower section of the tower, pulling, regulating and controlling the direction of the upper section of the tower through a hemp rope which is tied and suspended in advance, dropping a lifting hook, nesting guide rings mounted on the lower part of the upper section of the tower into the guide posts mounted on the upper part of the lower section of the tower, and guiding the upper tower section and the lower tower section to quickly and precisely align. The invention designs a brand-new hoisting and perpendicularly assembling method for sections of heavy tower equipment. With the adoption of the technical scheme, assembling for the upper section and the lower section can be completed more safely, quickly and precisely.

A central release unit for a hydraulic clutch actuator has a plastic cylinder housing which is produced by injection molding and which has at least one cylinder wall provided, on an outer circumference, with a reinforcement sleeve. The reinforcement sleeve can be fastened to the cylinder wall after the injection molding of the cylinder housing, for which purpose a snap-action connection is provided on a forward end, which faces away from the pressure connection piece, of the reinforcement sleeve. The connection is formed by a radially inwardly bent detent portion of the reinforcement sleeve and by a rib integrally formed on the outer circumference of the cylinder wall. The reinforcement sleeve has a main portion which adjoins the detent portion and which is of conical shape complementary to an outer circumferential surface, which is of conical form in the reinforcement region, of the cylinder wall.

The invention discloses a three-phase unbalance detection method and system for electric vehicle drive motor coils. Considering that the characteristic parameters of the motor will change drastically before and after a parallel branch circuit of a certain phase of the motor coil is disconnected, the application can change the characteristic parameters of the motor to The sudden change of parameters is used as the diagnostic condition for the three-phase unbalanced fault of the motor coil. Specifically, the characteristic parameters of the motor used for the three-phase unbalanced fault diagnosis of the motor coil can be determined in advance, and then the three-phase unbalanced fault of the motor coil can be diagnosed by detecting the variation of the characteristic parameters of the motor. Phase unbalance fault. It can be seen that the three-phase unbalance detection method of the present application can detect the three-phase unbalance fault of the motor coil caused by the disconnection of a parallel branch of a certain phase; and the calculation process involved in this detection method is relatively simple, and the resource occupation time is relatively short, thus It is more suitable for motor drive control with higher real-time requirements.

The invention discloses an efficient cone yarn dewatering device which comprises a bottom plate and a dewatering barrel arranged on the bottom plate, and further comprises a vertical frame, a lifting block, a rotating disc and a set of cone yarn lifting rotating frames used for storing cone yarns. The lifting block is arranged on the vertical frame in a lifting mode; the rotating disc is rotatably arranged on the lifting block; and the set of cone yarn lifting rotating frames are connected with the rotating disc through corresponding rotating supporting arms. The efficient cone yarn dewatering device is reasonable in structural design, a set of dewatering frames for storing the cone yarns can be operated in a lifting and rotating mode, some dewatering frames in the device can be located in the dewatering barrel for dewatering treatment, the other dewatering frames are located outside the dewatering barrel for cone yarn feeding and discharging operation, all the dewatering frames can be conducted simultaneously, and the dewatering operation can be conducted continuously in a rotating mode, so that the dewatering operation is efficient and occupies short time.