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

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 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 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 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 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.

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.