36results about How to "Reduce the difficulty of coordination" patented technology

The invention relates to an overall control system for trams and a control method thereof. The control system comprises an operation dispatching and commanding system, a positive line signal control system, a comprehensive vehicle-mounted information system and an intersection priority control system, wherein the operation dispatching and commanding system is used for controlling the operation of all lines, the positive line signal control system is used for carrying out interlock control on the trams at terminals and positive line branch stops, the comprehensive vehicle-mounted information system is used for sending real-time positioning and advancing route request signals, and the intersection priority control system is used for controlling the trams at intersections; the control method comprises the step of controlling a manually-confirmed control mode, a manual remotely-controlled control mode, a centralized automatic control mode and a tram-ground automatic control mode, of which the priority levels decrease sequentially. According to the control system and the control method, aiming at the complicated operating environment of the trams, all modules collaboratively complete adapted control modes through a communication system, the switchover of all the control modes is convenient, and the automatic and intelligent level is high, so that the increase / improvement of the efficiency / safety of the operation of the trams is facilitated.

The invention discloses a power big data system based on an intelligent power grid, and the system comprises a big data analysis platform, a power plant terminal, a transformer station terminal, and an intelligent community terminal, wherein the power plant terminal, the transformer station terminal and the intelligent community terminal are respectively connected with the big data analysis platform. The power plant terminal is used for collecting the power generation information in the power plant, and controlling an executing mechanism of power generation equipment. The transformer station terminal is used for collecting the power transmission and transformation information and controlling an executing mechanism of power transmission and transformation equipment. The intelligent community terminal is used for collecting the information of a smart home and controlling an executing mechanism of the smart home. The big data analysis platform is used for the controlling of instruction input, the loading and extracting of related data, data analysis and mining, the graphical displaying of analysis results and the generation of an analysis report. The system is objective and true in obtained big data, is high in accuracy, can determine a plan of optimal operation and load control, can achieve the reasonable formulation of marketing strategies of a power enterprise, can update regional energy development plans, and obtains external data of the power enterprise so as to obtain commercial values.

The invention discloses a touch display substrate, a touch display panel, a touch display screen and electronic equipment, and belongs to the field of touch display. The touch display substrate comprises a substrate body and a wire grid polarizer (WGP) arranged on one side face of the substrate body, the WGP comprises multiple metal wires arranged in parallel, and the metal wires are used for being connected with a touch integrated circuit (IC); on one hand, due to the fact that the metal wires can conduct electricity and the WGP comprises the metal wires arranged in parallel, when the metal wires in the WGP are connected with the IC, the metal wires in the WGP can be used as electrodes in a touch assembly; on the other hand, due to the fact that the WGP itself has the function of a polaroid, the WGP can be adopted to replace an original polaroid structure in the touch display substrate which is provided with the WGP, a layer of the polaroid is saved, and the thickness of the touch display substrate is decreased; meanwhile, when the WGP is adopted as the electrodes in the touch assembly, a Vcom electrode does not need to be cut to simultaneously achieve touch and display, and the coordination difficulty of a touch IC and a display IC is reduced.

The invention relates to a satellite constellation implementation method for implementing communication by utilizing a recursive orbit, and the method comprises the steps: a regression period, an orbital semi-major axis, an inclination of an orbit, an eccentricity ratio and an argument of perigee of the orbit are determined; the number of satellites and orbital planes are determined as n; right ascension of ascending node and a mean anomaly of a first satellite are determined, and according to service needs of the satellite, right ascension of ascending node and mean anomaly of following satellites are determined in sequence; a geostationary orbiting satellite network set that needs to be coordinated and the width of a non-geostationary satellite to geostationary satellite interference protection band are determined; all set satellites successively passes the top in the air along a same fixed orbit are seen at any position of the ground, and when multi-coverage is formed, users on theground can see a plurality of satellites; and if satellite trails pass the interference protection band for the geostationary satellite, when present accessed satellite enters the protection band, theusers on the ground switch to another satellite that does not in the protection band to continuously implement communication.

The invention discloses an open-cutting and undercutting combined metro station structure avoiding housing demolition and a construction method thereof. The structure is composed of an open-cutting area defined by a plurality of open-cutting fender posts and an undercutting area under a building. The open-cutting area is constructed firstly, and then the undercutting area is constructed. Before undercutting structure construction, a transverse advanced large pipe shed is set up in advance, and the pipe shed is supported by undercutting side poles and an open-cutting top plate constructed in advance. The undercutting side poles are constructed through longitudinal side pilot tunnels, and before pilot tunnel construction, pilot tunnel periphery deep hole grouting is performed for reinforcingfirstly. Soil excavation is performed and an undercutting top plate are poured under protection of a pre-supporting system of the large pipe shed, and after the top plate reaches the structural strength, side walls, middle plates, a bottom plate and other structures of the undercutting area are constructed in an inverted construction method. According to the open-cutting and undercutting combinedmetro station structure avoiding housing demolition and the construction method thereof, demolition can be avoided, the work schedule is guaranteed, the coordination difficulty is reduced, the work investment is lowered, an underground box frame system is kept unchanged, and no influence exists on building function and operating management.

The invention relates to a synchronous hoisting device for a steel column casing rack alternate support type steel platform and a tower crane and a hoisting method of the synchronous hoisting device.The hoisting device comprises the steel platform, the tower crane, hoisting steel columns (1) and a hoisting power system. The steel platform comprises a steel platform top beam (2), casing rack supports (201), an integral hoisting beam (6) and a horizontal support beam (7). The steel platform top beam, the casing rack supports, the integral hoisting beam and the horizontal support beam are arranged in sequence from top to bottom. The steel platform top beam (2) is provided with horizontal limiting guiding wheels (8). The guiding wheels abut against the tower crane in a selectable manner. Thetower crane is connected with the integral hoisting beam (6). The lower portion of the tower crane is fixedly connected with the horizontal support beam (7). The hoisting power system is used for providing hoisting power so that the steel platform can move along the hoisting steel columns. By means of the synchronous hoisting device, integral hoisting of the tower crane and the steel platform is achieved, and the problem that the tower crane interferers with the steel platform easily in the traditional construction process is solved.

The invention provides a mobile communication high-power multi-antenna distribution and coverage method and a mobile communication high-power multi-antenna distribution and coverage system. The system comprises base station amplifier and POI (Point Of Interface) integrated equipment and a low-power multi-antenna coverage system, wherein the base station amplifier and POI integrated equipment comprises a signal separation device, a high-power base station amplifier, an uplink POI and a downlink POI; the signal separation device is connected with the high-power base station amplifier and the uplink POI respectively; the high-power base station amplifier is connected with and the downlink POI; the signal separation device is connected with a corresponding system type base station; the low-power multi-antenna coverage system comprises a plurality stages of passive devices and antennae with the quantity corresponding to the stage number of the passive devices; any stage of passive device is connected with the corresponding antenna; the first stage of passive device on a down link is connected with the downlink POI; the first stage of passive device on an up link is connected with the uplink POI. According to the method and the system, the coverage effect is improved, the engineering construction difficulty is reduced, the manufacturing cost of the system is reduced and the maintenance difficulty is reduced.

The invention provides a high-power covering method and a covering device of a TDD mobile communication system. The high-power covering device comprises a donor end circulator, a downlink high power amplifier and an uplink low noise amplifier. The downlink high power amplifier is connected with a signal emission device, and the uplink low noise amplifier is connected with a signal receiving device. The uplink low noise amplifier and the downlink high power amplifier are respectively connected with the donor end circulator which is connected with a TDD base station. The high-power covering method and the covering device of the TDD mobile communication system promote covering effect and reduce real estate coordination difficulty, and the covering device has good market application prospect.

The invention discloses a liquid rocket power system commissioning method and device, which is used for a power system part section with a landing support. The liquid rocket power system commissioningdevice includes a plurality of foot fixed units, a counterweighing unit, an engine control unit, a data collecting measuring unit and an analyzing unit; the foot fixed units are correspondingly usedfor bearing and fixing all stand bars of the landing support, the counterweighing unit is arranged on the landing support and / or the inner part of the power system part section, the engine control unit is used for controlling operation of starting and stopping of an engine, the data collecting measuring unit is used for collecting commissioning state parameters of the power system part section, and data analyzing is conducted through the analyzing unit according to the commissioning state parameters collected by the data collecting measuring unit and preset conditions to obtain analyzing results. The scheme is applied, on the basis that the good assessment effect is achieved, commissioning cost can be effectively lowered, and application prospects are achieved.

The invention relates to the field of subway design and construction, and provides a close-fitting open and underground excavation combined subway station structure and a construction method thereof.The close-fitting type open and underground excavation combined subway station structure and the construction method thereof aim to solve the problems of subway station land occupation, demolition, underground excavation scale control, construction difficulty control, risk control and the like. The construction method of the close-fitting open and underground excavation combined subway station comprises the following steps that an open and underground excavation ranges and boundaries are determined; the open excavation part is provided with fender posts; an underground excavation transverse pipe shed is constructed; excavating is carried out to a base of the open excavation part, an anti-pulling structure, a waterproof system and an open excavation main body are constructed, a steel bar connector is reserved at a connecting opening between open excavation and underground excavation, and backfilling and earthing are carried out; an advanced small pipe is constructed; the open excavationfender posts at the transverse boundary between open excavation and underground excavation are removed, and an underground excavation part is constructed longitudinally in pilot tunnels according toa bench cut method; an underground excavation secondary lining is constructed; and the open excavation fender posts and underground excavation primary supports at the longitudinal boundary between open excavation and underground excavation are removed in sections, and connecting structures and waterproof systems of a top plate and a bottom plate at the connecting opening between open excavation and underground excavation are constructed. The close-fitting type open and underground excavation combined subway station structure and the construction method thereof have the beneficial effects thatdemolition is avoided, risks and investment are controlled, the project progress is guaranteed and the coordination difficulty is reduced.

The invention belongs to the technical field of aircraft structure design and particularly relates to an aircraft freight cabin door positioning and guiding structure. The structure comprises a cabin door (1), a sliding rail assembly (2) and an uplatch (3). The cabin door (1) is hinged to an aircraft body, the sliding rail assembly (2) is mounted on the aircraft body and the cabin door (1), and the uplatch (3) is mounted on the aircraft body and the cabin door (1). According to the structure, stable and reliable positioning and guiding of the aircraft freight cabin door are achieved.

The invention relates to a barrel frame support type steel platform and tower crane integral jacking device and a jacking method thereof. The integral jacking device comprises a barrel frame support type steel platform, a tower crane and a jacking power system, wherein the steel platform comprises a steel platform top beam, a barrel frame support, an integral jacking upper beam, an integral jacking lower beam and a tower crane supporting beam; the barrel frame support comprises barrel frame supporting columns and a counter force beam, and the steel platform top beam, the counter force beam, the integral jacking upper beam, the integral jacking lower beam and the tower crane supporting beam are sequentially arranged from top to bottom; the steel platform top beam and the counter force beamare provided with horizontal limiting guide wheels capable of selectively abutting against the tower crane; the bottom of the tower crane is fixedly connected with the tower crane supporting beam, oneof the integral jacking upper beam and the integral jacking lower beam is connected with the tower crane, and the other one of the integral jacking upper beam and the integral jacking lower beam is provided with horizontal limiting guide wheels so as to selectively abut against the tower crane; and the jacking power system is used for providing jacking power to enable the steel platform and the tower crane to move. According to the arrangement, integral jacking of the tower crane and the steel platform is realized, and the problem that the tower crane and the steel platform are prone to haveconflicts in the traditional construction process is solved.

The invention discloses an intelligent coal slime water treatment plant. Coal slime water is pretreated by a dosing and feeding device, and the resulting slurry is discharged into a filter press to bepressed for solid-liquid separation, thereby forming a filtrate and a filter cake; a filtrate tipping device is arranged below the filter press; two tipping mechanisms of the filtrate tipping deviceare closed to receive the filtrate; the tipping mechanisms are opened to allow the filter cake to fall into a movable filter cake breaker below; and the filter cake is broken into dry coal slime and then falls into an outfeed conveyor which finally sends out the dry coal slime for utilization. The intelligent coal slime water treatment plant is technically advanced, and can be combined with a corresponding intelligent coal slime water treatment method to solve the technical problems such as out-dated equipment, poor treatment effect, numerous processes, poor joint of processes, high labor intensity and the like in the art, allowing the coal slime water treatment to meet the requirements of going green and environmental protection.

The invention discloses a remote radio unit (RRU) remote system and relates to a signal coverage system. The system comprises a pRRU unit, a near-end machine, a far-end machine, a combiner, an antenna unit and a network management system, wherein a signal input end of the near-end machine is connected with a signal output end of the pRRU unit, a signal output end of the near-end machine is connected with a signal input end of the far-end machine, the signal input end of the combiner comprises two paths of signal input ends, one path of signal input end of the combiner is connected with the signal output end of the far-end machine, the other path of signal input end of the combiner is connected with 2G, 3G or 4G signals, the signal input end of the antenna unit is connected with the signal output end of the combiner, and the signal input end of the antenna unit is connected with the signal output end of the far-end machine. The network management system is connected with the near-end machine, and in the original 2G3G4G signal coverage scene, when 5G coverage is established, signal coverage is completed through a PRU remote system after only one small base station information source is established.

The invention discloses a multi-aircraft coordinated combat simulation control apparatus. The apparatus comprises a power supply control module, an emission control module, a software loading control module and an address bit control module, wherein the power supply control module provides power supply control for aircrafts; the emission control module obtains discrete magnitude signals from a power supply input end and emits control instruction signals through a delay relay and switches to realize emission control of the aircrafts; the software loading control module performing software loading on simulation systems I, II and III; and the address bit control module is connected with the corresponding switches and carries out address bit control thorough controlling whether the switches are connected with an address loop. The apparatus substantially reduce preparation time before a test, the workload, operation personnel and simulation time, and ensures what is urgently needed for the test.

The invention discloses a use method of an automatic quality inspection sampling settlement system, and the method comprises the following steps: a driver enters a factory, a sample is captured, an inspection sheet is generated, a price is settled, a supplier is notified, a radar senses a vehicle, and an RFID card reader automatically starts scanning; legality verification is carried out on the RFID logistics information card of the driver; after the vehicle completely enters a sampling machine,a vehicle detector cannot detect the vehicle, and an entrance barrier gate automatically falls down; after sampling is finished, a sampling person manually presses down a release button, an exit barrier gate is automatically lifted up, and voice broadcast is performed on a request for leaving after sampling is finished; a laboratory all-in-one machine can periodically acquire test data; the method greatly improves the working efficiency of grain quality inspection and settlement, reduces the difficulty of personnel organization and coordination, reduces the operation cost, is good in use effect, is an innovation of grain quality inspection and settlement equipment, and has good economic and social benefits.

The invention discloses a geological disaster drilling system based on virtual reality, which comprises an LED display screen for displaying a geological disaster field scene and VR glasses for experiencing the geological disaster field, wherein the LED display screen is controlled by a virtual reality system, and the virtual reality system is controlled by a remote control system. The geologicaldisaster drilling system based on virtual reality has the beneficial effects that the geological disaster digital drilling system based on the virtual reality simulates the real geological disaster field, the intuitive impression of relevant functional departments on a geological disaster is deepened, effects of half the work with double results are achieved, and in the virtual reality geologicaldisaster drilling system, the field drilling difficulty can be alleviated, the coordination difficulty of persons in various departments in the field is reduced, and the more intuitive understanding of the severity of geological disasters on people is also deepened.

The invention relates to a single-circuit drilled and spanned steel pipe pole. The single-circuit drilled and spanned steel pipe pole comprises a tower body manufactured by steel pipes, and the towerbody is sequentially provided with top layer ground wire cross arms, an upper layer spanned wire cross arm, a middle layer auxiliary cross arm, a lower layer ground wire cross arm, a lower layer spanned wire cross arm and a lower layer hanging-down low-voltage grade wire cross arm from top to bottom; the top layer ground wire cross arms are cross arms on the two sides perpendicular to the spannedside circuit direction, the middle layer auxiliary cross arm comprises a bilateral cross arm parallel to the spanned side circuit direction and a unilateral cross arm perpendicular to the spanned sidecircuit direction; and the lower layer ground wire cross arm, the lower layer spanned wire cross arm and the lower layer hanging-down low-voltage grade wire cross arm are bilateral cross arms perpendicular to the drilled and spanned side circuit direction. According to the single-circuit drilled and spanned steel pipe pole, the circuit coordination difficulty is reduced, the power grid reliability is increased, the construction cost is saved, and meanwhile, the newly-built circuit ground wire ground distance of a drilled and spanned gear is further shortened.

The invention provides a shallow-buried tunnel pipe-roof underground excavation full-section construction method under complicated environmental conditions. By combining a pipe-roof underground excavation technology and a shallow-buried underground excavation tunnel construction safety and settlement control technology, one or more of the following measures is taken: (1). shortening the distance range of capping mass clearing of each inverted arch, the spatial distance range between the capping mass clearing process and a tunnel excavation face, and the spatial distance range between a secondlining and the tunnel excavation face to the greatest extent; (2). simultaneously constructing inverted arches and the second lining of an arch wall, and timely closing the second lining to form a ring; and (3). if necessary, reinforcing the tunnel excavation face under the protection of super-strong pipe-roofs to realize the stability of the tunnel excavation face under the condition of full-section excavation. Due to the full-section excavation and the shortening of each process to the greatest extent, the distance between the second lining and the face is effectively shortened; and the annular and longitudinal stress system formed by the second lining, initial supports, and soil and the pipe roofs in front of the face has a better effect than a "shallow-buried underground excavation method" safety guarantee and ground surface settlement control.

The invention relates to an integrally-mounted bridge cable laying method. The method comprises the following steps: 1, hoisting and segmenting are carried out on a bridge by applying a pipeline comprehensive technology; 2, holes are formed in the corresponding positions of a top plate, and expansion bolts are installed; 3, connecting, segmenting and straightening of the bridge on the ground are carried out; 4, cable protection riding wheels are installed at the tail ends of the two sides of the head segment, a cable sliding supporting device is laid in the hoisting secondary segment bridge, and a cable horizontal laying restraining device is installed at the turning position; 5, cable laying is carried out, except formal cable fixing at the head segment of the hoisting, other segments alladopt cable temporary fixing devices; 6, the cable protection riding wheels, the sliding supporting device, a temporary restraining device, the temporary fixing devices and the like are disassembledand displacement installation work is completed; and 7, installation of the cable bridge of the vertical part at the tail end of the equipment is completed finally. The overall is enhanced after laying of the cable bridge and the cable on the ground, and the labor cost of cable laying and the aerial work risk are reduced.

The invention belongs to the technical field of aircraft structure design and particularly relates to an aircraft freight cabin door positioning and guiding structure. The structure comprises a cabin door (1), a sliding rail assembly (2) and an uplatch (3). The cabin door (1) is hinged to an aircraft body, the sliding rail assembly (2) is mounted on the aircraft body and the cabin door (1), and the uplatch (3) is mounted on the aircraft body and the cabin door (1). According to the structure, stable and reliable positioning and guiding of the aircraft freight cabin door are achieved.

The invention provides a natural gas overhead pipeline street crossing support device, and relates to the technical field of pipeline erection. The natural gas overhead pipeline street crossing support device comprises a natural gas overhead pipeline, a supporting part and at least one steel wire rope, wherein the natural gas overhead pipeline is arranged between two buildings in a crossing mode,the supporting part is connected with the lower portion of the middle of the natural gas overhead pipeline, the at least one steel wire rope is connected with the two ends of the natural gas overheadpipeline and is symmetrically arranged along the supporting part, and the other ends of the steel wire ropes are fixedly connected with the supporting part to enable the steel wire ropes to have tension. Compared with the prior art, the capacity of a natural gas street crossing pipeline itself is effectively increased, and no external measures are adopted or the external measures are adopted as little as possible; the crossing distance of the overhead pipeline is effectively increased, and for a street which exceeds 5-6m of the crossing limit of an original pipeline, the crossing can be easilycompleted; due to the fact that construction is not carried out on the user wall and the ground, the construction site coordination work and difficulty due to adopting other measures are effectivelyreduced; and the natural gas overhead pipeline street crossing support device is simple and convenient to manufacture and construct, easy to operate, easy to master and easy to popularize.

An overall control system for trams and a control method thereof, the control system includes an operation dispatching command system for operation control of all lines, and a main line signal for interlocking control of trams at terminal stations and main line diverging stations control system, an integrated on-vehicle information system for sending real-time positioning and route request signals, and an intersection priority control system for tram intersection control; the control method includes a manual confirmation control mode in which the control priority is sequenced from high to low , manual remote control mode, centralized automatic control mode and vehicle-to-ground automatic control mode; the present invention aims at the complex operating environment of the tram, and its various modules cooperate to complete the corresponding control mode through the communication system, and the conversion of each control mode is convenient and automatic. And the high level of intelligence is conducive to improving the safety and efficiency of tram operation.

The invention belongs to the technical field of manufacturing of welded structures and combined square boxes, and discloses a precision machining method for a large-sized combined square box of a welded framework structure. The large-sized combined square box of the welded framework structure is formed by combining and splicing two sub-box bodies, each sub-box body is of a box body structure formed by splicing and combining a front plate, a rear plate, a top plate, a bottom plate and two side plates, and a vertical plate is arranged in each box body structure. The precision machining method comprises the steps of controlling the state of part materials, controlling the size allowance of the parts before the sub-box bodies are welded, coordinating the machining datum after the sub-box bodies are welded, machining the sub-box bodies and assembling the two sub-box bodies. According to the precision machining method for the large-sized combined square box of the welded framework structure, by analyzing the product structure and the forming mode, corresponding measures are provided from the aspects of datum design, allowance coordination, the technological process and the like, the problems that the allowance coordination difficulty is large, and the product precision is difficult to control are solved, and the product quality is improved.

The invention discloses a mobile communication high-power distribution coverage system, which belongs to the technical field of mobile communication distribution coverage. The mobile communication high-power distribution coverage system comprises a core network transmitting end, a standard base station, a POI, a high-power distributor, a local side device, an optical line terminal and a service shunting device. The coverage effect is improved, passive devices with different coupling degrees are used to input appropriate power to the antenna to complete coverage, the overlay field intensity ismore uniform, the problems of excessive front-stage power waste and unavailable small rear-stage power when leakage cable coverage is adopted in the traditional scheme are avoided, therefore, the coverage range of a single POI system is expanded, POI point locations are greatly reduced, installation of installation point locations of active equipment and installation of power lines are reduced, the engineering construction difficulty is low, meanwhile, the property coordination difficulty is reduced, the engineering construction difficulty is reduced, and the system manufacturing cost and themaintenance difficulty are reduced.

The invention provides a transformation method and application suitable for a built old wind power plant fan foundation, and the transformation method comprises the following steps: installing an inner ring of anchor bolts and an outer ring of anchor bolts on the old wind power plant fan foundation by using an original structure, pouring concrete at the top and the outside of a foundation middle pier after installation to form an expanded middle pier, embedding the inner ring of anchor bolts and the outer ring of anchor bolts, and fixing the expanded middle pier on the foundation. And the pretightening force after the anchor bolts are tensioned fully ensures the integrity and safety of the transformed fan foundation. The transformed fan tower can be a concrete tower or a steel tower, and can be connected with the transformed fan foundation in an anchoring manner through a steel strand or an anchor bolt cage, so that the technical transformation of the fan foundation is realized. The wind turbine foundation structure is fully utilized, an original foundation and new land do not need to be dismantled, the technical transformation cost is saved, land resources are saved, land acquisition disputes are avoided, the working procedure is simple, operability is high, the stress form of the transformed wind turbine foundation is reasonable, and good economical efficiency and safety are achieved.

The invention discloses a method for remotely pumping thick cement slurry through a relay method, which comprises the following steps: equipment type selection, pipeline erection, communication equipment debugging, testing, stirring, pumping and cleaning, wherein a 7 Mpa double-layer high-pressure pipe is selected as a double-layer high-pressure pipe, a fixed support is additionally arranged between the pipeline and a stair railing every 10 m, a buffer barrel is additionally arranged at the position of each relay grouter and is used for temporarily storing cement grout in a pipeline when grouting is suspended. According to the method for remotely pumping the thick cement slurry through the relay method, the construction efficiency is greatly improved, the thick cement slurry transportation speed is high, the construction period is shortened, due to the fact that pipeline transportation is adopted, worker operation is reduced, the personnel organization difficulty caused by cross operation is reduced, pollution to completed structures is reduced, particularly dip dyeing of contact nets is reduced, the workload of secondary cleaning is reduced, and the cleaning cost is reduced.

The invention discloses a multi-building united temperature area method heat metering system based on wireless temperature acquisition, and relates to a heating metering system. In the system, a wireless temperature sensor and a wireless temperature acquisition device are connected in a wireless communication mode, so that the number of cables arranged in a heating user room is reduced, building decoration in the heating user room is prevented from being damaged, and construction difficulty and construction cost are reduced simultaneously. All heat distribution operation, data processing and data storage of the system are finished by a heat distribution server arranged in a data center machine room instead of the conventional building distributor, so that data loss caused by the failure of front-end equipment is avoided, and data safety and data reliability are ensured. A plurality of united metering units can share one heat distribution server, so that system cost and deployment difficulty are greatly reduced. A plurality of heat distribution servers can be arranged in one data center machine room, so that data centralized management is realized, a carrier-grade framework is met,distribution operation is more accurate, and charging is fairer and more reasonable.

The present invention proposes a full-section construction method of pipe-curtain excavation for shallow-buried tunnels under complex environmental conditions. By combining the pipe-curtain excavation technology with shallow-buried tunnel construction safety and settlement control technology, one or more of the following Measures to be taken: (1) Minimize the range of the bottom-picking distance of each inverted arch, the space distance between the bottom-picking process and the tunnel excavation face, and the space distance between the second lining and the tunnel excavation face; (3) When necessary, under the protection of the super-strong pipe curtain, the face of the tunnel excavation is reinforced to realize the full-section excavation of the face of the tunnel excavation. stability. Due to the excavation of the full section and the shortening of the distance of each process as much as possible, the present invention effectively shortens the distance between the second lining and the operation face, and the ring and longitudinal bearing jointly formed by the second lining, the primary support, the soil mass in front of the operation face and the pipe curtain Compared with the "shallow burial and underground excavation method", the force system has better safety guarantee and surface settlement control effect.

The invention relates to a bidirectional ceiling antenna used in a distribution system in a mobile communication network room, comprising a metal girdle, a ball-circular truncated cone oscillator and a binding post. The metal girdle is connected with an outer conductor at one end of the binding post, the circular truncated cone top of the ball-circular truncated cone oscillator is connected with an inner conductor at one end of the binding post; the axis of the binding post, the symmetry axis of the ball-circular truncated cone oscillator and one diameter of the metal girdle are arranged on the same straight line; and the other end of the binding post is connected with a coaxial cable. The bidirectional ceiling antenna provided by the invention can acquire the signal enhancement of 3dB at a low-band segment and the signal enhancement of 6-10 dB at a high-band segment in a linear and bidirectional coverage area as comparison with a traditional universal ceiling antenna.