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78results about How to "Reduce service pressure" patented technology

Content delivery network (CDN)-based transmission system and method

InactiveCN103986976AImprove data transfer efficiencyAvoid processes that require handling multiple requestsSelective content distributionData streamComputer terminal
The invention discloses a content delivery network (CDN)-based transmission system which comprises CDN access layer equipment, CDN transmission layer equipment and edge layer distribution equipment, wherein the CDN access layer equipment is used for receiving play data comprising an index file and fragment files from a play source, streaming the fragment file in the play data and packaging into a play data stream; the CDN transmission layer equipment comprises multiple transmission layers and is used for transmitting the packaged play data stream to the edge layer distribution equipment according to a request from a playing terminal transmitted by the edge layer distribution equipment; the edge layer distribution equipment is used for receiving the play data stream, segmenting the play data stream into fragment files, generating a corresponding index file and distributing the fragment file to the play terminal which transmits the request according to the index file. In addition, the invention also provides a CDN-based transmission method. According to the system and method, the pressure of CDN service can be reduced, the transmission efficiency is improved, and the damage rate of a disc is reduced.
Owner:BEIJING SOOONER TECH DEV

Deep learning-based electric power suspected complaint work order recognition method

The invention discloses a deep learning-based electric power suspected complaint work order recognition method, and relates to complaint recognition method for electric power customer services. At present, electric power suspected complaint work orders are artificially recognized, so that the efficiency is low, the timeliness is bad and human resources are wasted. The method comprises the following steps of: 1) deep learning model configuration; 2) complaint feature label extraction; 3) complaint sample formatting; 4) model learning and training; 5) suspected complaint recognition; and 6) suspected complaint classification. According to the method, a series of work such as data cleaning and sorting, complaint tendency word extraction, data modeling and optimization, sample iterative learning and training, machine learning and prediction and the like can be carried out on complaint lists through a deep learning technology, so that deep learning-based intelligent recognition and classification of suspected complaint work orders are realized, the intelligent work experience is enhanced and the service quality control work efficiency is improved.
Owner:STATE GRID ZHEJIANG ELECTRIC POWER CO MARKETING SERVICE CENT +1

Modular development and publishing system for automatic compiling and establishing of web front-end codes

The invention provides a modular development and publishing system for automatic compiling and establishing of web front-end codes. The system comprises a compiler module for the web front-end codes, a continuous establishing and publishing management module and a version management center. The system provided by the invention is used for solving the present situation that jc language and css language are not flexible enough, therefore web front-end developers can flexibly use the jc and css languages for modular developing and compiling integration just as what background developers do with other high-level languages; continuous and automatic establishing and publishing management of the web front-end codes can be carried out, so as to improve the working efficiency of the web front-end developers and the cooperative work capabilities between teams; at the same time, the problem in the traditional system that one page needs to refer to multiple js / css resource files is solved, as a result, the request times for a browser on resources are reduced, and service pressure is also reduced.
Owner:CENTURY HEGUANG TECH DEV BEIJING

Service scheduling method for interactive television system

The present invention discloses a service dispatching method of an interactive television system, which comprises a configuration stage and a service stage; the configuration stage comprises the following procedures: storing the result of the global load balancing on the user terminal device as a static information; the static information at least comprises an IP address of a edge node servicing for the user terminal; the service stage comprises: the user terminal sends a service request information to the edge service node address stored in local; if the edge service node can not satisfy the service request, the service request of the user terminal is leaded to a higher level node, and the service is provided by the higher level node to the user; otherwise, a media service server is selected by the edge node and the IP address is returned to the user terminal. The time efficiency and the serviceability of the service are improved after the proposal of the present invention is utilized, the service pressure of the middle node is decreased, and the affection to the entire system by a single node fault is reduced.
Owner:NANJING ZHONGXING XIN SOFTWARE CO LTD

Novel caching method and system for industrial Internet identifier analysis recursive server

The invention relates to the technical field of industrial Internet identifier analysis and networks, in particular to a novel caching method and system for an industrial Internet identifier analysisrecursive server. An original caching method of the recursive server is not changed, and the identifier and the information with higher query frequency can be dynamically adjusted to the caching queueuntil the identifier is deleted due to expiration of TTL or discarded due to the fact that the caching queue reaches the upper limit of the length. Meanwhile, a newly-built secondary node cache queueis used for caching IP address information corresponding to the secondary node, so whether the secondary node cache queue has a secondary node address or not can be checked if the recursive server has no cache locally, and if the secondary node cache queue has the secondary node address, a request is directly initiated to the secondary node to obtain corresponding identification information, so that interaction operation with a top-level node is reduced, thereby reducing the top-level node pressure and bandwidth load. According to the method, the frequency of frequently interacting with the top-level node can be reduced, and the working efficiency of industrial Internet identifier analysis caching can be improved.
Owner:NANJING ZHAOSHICHANG NETWORK TECH +1

Distributed certificate verification method

A distributed certificate verification method realized through the following steps, establishing a distributed checking server, configuring CA certificate, CRL address needed to be downloaded and downloading time, configuring system network, the distributed checking server automatically downloading from CA knowledge library and refreshing CRL in predetermined time or based on the time range stipulated in the CRL, in the terminal real application, revising connections for obtaining CRL redirecting them to the distributed checking server, the distributed checking server obtaining the corresponding CRL, the application unit proceeding certificate checking by using the CRL obtained from the distributed checking server.
Owner:上海市财政税务信息中心 +1

Address allocation method, device and system thereof

The embodiment of the invention provides a method for distributing addresses, comprising the following steps : as a gateway of an access point with the configuration server and dns server for dns 64; judging whether requests access to a network server, whether the terminal supports the IPv4 protocol stack; if yes, the terminal is allocated to the dns server dns address; wherein the dns server for transmitting the network server of an IPv4 address and or the IPv6 address to the terminal, the dns server only 64 for supporting IPv4 protocol stack of the IPv6 network server of the IPv4 address to IPv6 address is sent to the terminal. The embodiment of the invention also discloses an address allocation device and system. By adopting the method, according to the type of the terminal supports the protocol stack to allocate the different address, the dual stack terminals to the IPv4 protocol stack access IPv4 server, and reduces the cost of an operator, improves the user experience, and avoids the defects of NAT 64.
Owner:HUAWEI TECH CO LTD

Anti-counterfeiting authentication method for e-commerce and online shopping goods

The invention discloses an anti-counterfeiting authentication method for e-commerce and online shopping goods. The method comprises the following steps: S1, a supplier terminal confirming and authorizing a dealer terminal; S2, after authorization succeeds, the dealer terminal sending an encrypted purchase requisition and dealer identity information to the supplier terminal for purchase operation; S3, the supplier terminal, after decrypting the information, verifying the dealer identity information, and if verification succeeds, feeding a corresponding decrypted goods code to the dealer terminal; S4, the dealer terminal decrypting the information and obtaining the goods code; S5, when the dealer terminal receives a buyer transaction request, sending the goods code and the dealer identity information which are encrypted together with goods to a buyer; and S6, the buyer verifying the purchased goods and the dealer identity information through an online shopping platform. According to the invention, the risk of intercepting or tampering data is avoided, the security of anti-counterfeiting verification is higher, and the anti-counterfeiting verification result is also more objective and real.
Owner:东北大学秦皇岛分校

Convenient social-security self-service system

The invention provides a convenient social security self-service system, which includes a self-service terminal, a social security system, a call center, and a short message platform; the social security system is connected to the self-service terminal, the call center, and the short message platform respectively connection; the self-service terminal includes a cabinet, and an information collection and authentication module, a human-computer interaction module, a printing module and a communication module are arranged on the self-service terminal; the information collection and authentication module is used to collect and authenticate user information, and the person The computer interaction module is used for displaying and collecting user instructions, and the communication module is used for submitting user information instructions and receiving feedback information from the social security system. The present invention has a series of functions such as identity authentication of social insurance participants, card making, loss reporting, card replacement, fee payment, and information query. Realize the one-stop service of social security work, reduce the pressure of window service of relevant departments, and facilitate the public to handle social security business.
Owner:SHIJIAZHUANG JINHAI SCI & TECH DEV

Tablet-computer-based long-distance medical care system with behavior monitoring function

The invention discloses a tablet-computer-based long-distance medical care system with the behavior monitoring function. The system comprises a detecting device, a family nurse station, a cloud server and a medical care workstation, wherein the detecting device is used for collecting and sending physiological parameters, the family nurse station is used for receiving, storing, analyzing and uploading the physiological parameters and achieving data interaction including audio, videos, texts and pictures between doctors and patients, the cloud server is used for storing and analyzing a user database, and the medical care workstation is used for enabling medical workers to download and manage data in the user database and achieving data interaction including audio, videos, texts and pictures between the doctors and the patients. A tablet computer serves as a hardware terminal in the family nurse station, the carrying convenience is provided for a user, and the system erecting cost is reduced. The family nurse station comprises a behavior monitoring module, and recognizing and alarming of abnormal movement behaviors of the patients are achieved. The long-distance medical care system is convenient to carry, beneficial to interaction, high in large data processing capacity and capable of meeting requirements for diagnosing, treating, consulting and nursing of common diseases.
Owner:TAIMAI TECH BEIJING

Data distribution method, system and device and computer readable storage medium

The invention discloses a data distribution method, system and device and a computer readable storage medium. The method comprises the steps of receiving a data request sent by a client; and judging whether the data request meets a preset hot degree requirement or not, and if yes, distributing edge node resources corresponding to the data request to the client according to a nearby distribution principle, so as to enable the client to obtain corresponding data through the edge node resources. The invention provides a video distribution method. According to the data distribution method, the client acquires the corresponding data nearby through the nearby edge node resources, and the edge node resources are independent idle resources, so that the service pressure of the data distribution server can be reduced by means of the edge node resources, the data distribution cost can be reduced, the edge node resources can be fully utilized, and the resources can be effectively utilized. The data distribution system and device and the computer readable storage medium also solve the corresponding technical problems.
Owner:SHENZHEN ONETHING TECH CO LTD

Incremental learning distributed computing method, system and node based on block chain

The invention relates to the technical field of blockchains, and discloses a blockchain-based incremental learning distributed computing method, which comprises the following steps that: a data collection device acquires user data; the server initiates a model training request based on incremental learning, and divides the user data into a plurality of sub-data sets based on a data parallel optimization strategy; the task allocation server divides the model training content into a plurality of model training task calculation layers based on a multi-layer parallel model training method, and publishes the model training task calculation layers to the block chain; each block chain node receives a plurality of model training task calculation layers issued by the task allocation server, and performs model training based on a block chain voting rule; and the block chain combines the model training results stored in each block chain node into a final calculation result according to the divided task calculation hierarchy sequence. The invention further provides an incremental learning distributed computing system and a blockchain node. According to the invention, incremental learning calculation is realized.
Owner:汪金玲

Stacker-reclaimer remote monitoring and management system based on Internet technology and method

The invention provides a stacker-reclaimer remote monitoring and management system based on the Internet technology. The stacker-reclaimer remote monitoring and management system comprises a stacker-reclaimer PLC control system, a connection communication network, a remote data cloud server, an engineer station and an intelligent monitoring terminal, wherein the stacker-reclaimer PLC control system is additionally provided with the connection communication network; the connection communication network is connected with the remote data cloud server through the Internet; the engineer station isconnected with the remote data cloud server through a switch; and the remote cloud server comprises a data processing cloud server and a video processing cloud server, a remote management system is installed in the data processing cloud server, and the remote management system is used for communication connection security, client permission distribution management and remote comprehensive management. The stacker-reclaimer remote monitoring and management system has the advantages that a remote service management platform provides stacker-reclaimer fault diagnosis analysis, namely, big data isused for predicting the future possible fault time of the equipment, a solution for avoiding risks then is provided, and thus the loss of customers caused by fault shutdown of the equipment is eliminated.
Owner:CHANGCHUN POWER GENERATION EQUIP PLANT

Ground base station, and resource allocation method and communication system based on satellite cluster

The invention discloses a ground base station, and a resource allocation method and a communication system based on a satellite cluster. The method comprises the following steps: for a user terminal in which services are allocated to a satellite in the satellite cluster, performing sub-group division on the user terminal according to a channel quality indicator CQI value; allocating a modulation code mechanism MCS service of a corresponding level to each sub-group according to the CQI value of each sub-group user terminal; calculating a resource allocation weight of the MCS service of each level according to the minimum data rate of the allocated MCS service of each level; and respectively calculating the number of resource blocks RB allocated to each sub-group according to the resource allocation weight of the MCS service allocated to each sub-group. By application of the resource allocation method disclosed by the invention, the wireless resource management is simple, relatively highQoS can be ensured, and the resource allocation fairness is satisfied.
Owner:BEIJING UNIV OF POSTS & TELECOMM +1

Disk monitoring and alarming method, system and device, and computer storage medium

The present application discloses a disk monitoring and alarming method, system and device, and a computer storage medium, which are applied to any child node of a distributed file system. The methodcomprises: acquiring monitoring index data of a disk monitored by the disk; determining whether the monitoring index data exceeds an alarm threshold data, and if so, encapsulating the monitoring indexdata exceeding the alarm threshold data into alarm information; and sending the alarm information to a primary node to which the alarm information belongs, so that the primary node sends the alarm information to the user client. Thus, monitoring and alarming of the disk are completed by using the child nodes of the distributed file system, and the service pressure of the primary node is reduced compared with the monitoring and alarming of the disk completed by using the primary node in the prior art. By using the disk monitoring and alarming method, system and device, and the computer storagemedium disclosed by the present application, the service pressure of the primary node in the disk monitoring and alarming is reduced to a certain extent.
Owner:ZHENGZHOU YUNHAI INFORMATION TECH CO LTD

Data transmission method between intranet and extranet and related equipment

The invention provides a data transmission method between an intranet and an extranet. The method comprises the following steps: receiving an extranet request for accessing an intranet service; determining whether the extranet request belongs to a valid request configured on an extranet gate pre-process of the extranet server or not; if so, sending the extranet request to the extranet gate pre-process, and determining a routing strategy matched with the extranet request according to the routing configuration of the extranet gate pre-process; when the routing strategy is an asynchronous strategy, sending a request path and a request parameter to a message queue (MQ) through the extranet gate pre-process; obtaining a request result from the MQ through the extranet gate- pre-process; and returning the request result to a user terminal through the extranet gate pre-process. The invention relates to a blockchain technology. A request result can be uploaded to a blockchain. The method can beapplied to a smart city management scene, thereby promoting the construction of a smart city.
Owner:PINGAN INT SMART CITY TECH CO LTD

Method, device and apparatus for accessing external node to blockchain, and computer medium

The invention discloses a method, device and apparatus for accessing an external node to a blockchain, and a storage medium, the method, device and apparatus are applied to a seed node server in a blockchain system, an access request sent by a first external node is received, the access request is used for requesting access to the blockchain system, and the first external node is a node not accessed to the blockchain system; acquiring node information of a proxy node in the blockchain system and an external node accessed to the blockchain system; based on the node information, selecting a target node set from the agent node and an external node accessed to the blockchain system; and sending the information of the target node set to the first external node, so that the first external node accesses the blockchain system based on the information of the target node set through a DHT algorithm. According to the application, the first external node may access the blockchain system through the proxy node or the external node accessed to the blockchain system, so that the influence on the performance of the blockchain system during access of the external node can be reduced.
Owner:SHENZHEN THUNDER NETWORK TECH +1

Self-service selling and issuing system and method of tax control equipment

PendingCN109615804AAvoid the need to be in the tax officeAvoid the disadvantages of multiple trips to and from the tax disk service unitReceipt giving machinesInvoiceEngineering
The invention provides a self-service selling and issuing system and method of tax control equipment, and belongs to the technical field of financial tax control. The self-service selling and issuingsystem is characterized in that the self-service selling and issuing system comprises an outer shell (1), a front door (10) is arranged on the front end face of the outer shell (1), a display screen (3) is arranged on the front door (10), an invoice outlet (4) is formed in the lower part of the display screen (3), and a tax disc outlet (7) is formed in the lower part of the invoice outlet (4); aninvoice printing device (15), a tax disc cabinet (14) and a main control box (17) are arranged in the outer shell (1), and a main control circuit in the main control box (17) controls the invoice printing device (15) and the tax disc cabinet (14). Through the self-service selling and issuing system and method of the tax control equipment, a tax officer can complete tax disc applying and issuing work and invoice applying work at a time, and the defects that in a traditional mode, the tax officer needs to walk between the tax authority and a tax disc service unit back and forth for many times.
Owner:航天信息(山东)科技有限公司

Live streaming room interaction message processing method and device, electronic equipment and storage medium

The embodiment of the invention discloses a live streaming room interaction message processing method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring the number of online people in each live streaming room; determining a hot live streaming room of which the online number of people is greater than or equal to a set threshold; periodically reading interactive messages corresponding to the popular live streaming rooms in a data storage layer; wherein the hierarchy of the intranet access layer in the system architecture is higher than thatof the data storage layer, so that the number of pull message requests transparently transmitted downwards through the intranet access layer is reduced, the service pressure of the intranet is reduced, and the use condition of system resources is optimized.
Owner:BEIJING BYTEDANCE NETWORK TECH CO LTD

Method and system for killing viruses of audio/video files transmitted from office network to production network

The invention provides a method and a system for killing viruses of audio / video files transmitted from an office network to a production network. The method comprises the steps: an office network client-side performs security filtering on the audio / video files to be transmitted to the production network and sends the filtered audio / video files to an anti-virus wall; an embedded virus-killing module of the anti-virus wall performs primary virus killing on the audio / video files and then sends the audio / video files to a primary virus-killing server; the primary virus-killing server performs file segmenting on the audio / video files according to frames, performs secondary virus killing on all of frames of audio / video files, then adds corresponding feature identifiers for all of frames of audio / video files and sends the audio / video files to a secondary virus-killing server of the production network; the secondary virus-killing server verifies the safety of all of frames of audio / video files according to the feature identifiers carried by all of frames of audio / video files and performs tertiary virus killing on the audio / video files.
Owner:BEIJING TELEVISION +1

Alarm data processing method and device

The invention provides an alarm data processing method and device. The method includes the steps that the amount of actual alarm data generated in a preset period of time is acquired; whether the amount of the actual alarm data generated in the preset period of time is larger than the amount of estimated alarm data or not is detected; if the amount of the actual alarm data generated in the preset period of time is larger than the amount of the estimated alarm data, the alarm data with the amount larger than the amount of the estimated alarm data in the preset period of time is merged. By the adoption of the technical scheme, the amount of alarm data can be greatly reduced; in this way, when the alarm data is sent to mobile terminals of OP personnel, the service pressure of a short message gateway can be greatly relieved, it can be guaranteed that all follow-up alarm data is normally sent, and the risk that as OP personnel do not receive important alarm data in time, faults are not handled in time can be avoided. Thus, by the adoption of the alarm handling scheme, the fault handling efficiency can be effectively improved.
Owner:BEIJING BAIDU NETCOM SCI & TECH CO LTD

Remote medical care system with skin type identification function based on integrated workstation

The invention provides a remote medical care system with a skin type identification function based on an integrated workstation. The system comprises a family nurse station for acquiring physiological parameters, receiving, storing, analyzing and uploading the physiological parameters, and realizing data interaction, including audios, videos, characters and pictures, between a doctor and a patient, a cloud server for storing and analyzing a user database, and a medical care workstation for the medical personnel to download and manage data in the user database and realizing data interaction, including audios, videos, characters and pictures, between a doctor and a patient; the integrated workstation is taken as the hardware terminal of the family nurse station, and therefore, the integrity and the independent operational capability of the system are improved; a detection apparatus comprises a skin type detection terminal to detect and transmit the skin type information. The remote medical care system is high in integrity, convenient to interact, strong in big data handling capacity, and capable of meeting common disease diagnosis and treatment, consultation and nursing requirements.
Owner:TAIMAI TECH BEIJING

Data transmission method and device, equipment and storage medium

The invention provides a data transmission method and device, equipment and a storage medium. The method comprises the steps of receiving a first data packet used for requesting a service and sent bya user terminal; determining target address information of an application server matched with the service requested in the first data packet; packaging the first data packet by using tunnel packagingparameters to obtain a packaged first data packet, wherein the tunnel encapsulation parameter comprises a processing performance parameter of the first network device and the target address information; sending the packaged first data packet to a second network device, the second network equipment is used for analyzing the tunnel encapsulation parameters and the first data packet from the encapsulated first data packet. Through the method, transmission resources of the first network equipment can be saved, and the service pressure of the first network equipment is reduced.
Owner:BEIJING BYTEDANCE NETWORK TECH CO LTD

Remote medical care system with behavior monitoring function based on smart television

A remote medical care system with a behavior monitoring function based on a smart television comprises a detection device, a family nurse station, a cloud server and a medical care workstation, wherein the detection device is used for acquiring and transmitting physiological parameters, the family nurse station is used for receiving, storing, analyzing and uploading the physiological parameters and interchanging data including audios, videos, characters and pictures between a doctor and a patient, the cloud server is used for storing and analyzing a user database, and the medical care workstation is used for downloading and managing the data in the user database by medical staff and interchanging the data including the audios, the videos, the characters and the pictures between the doctor and the patient. The family nurse station uses the smart television as a hardware terminal, system building cost is reduced, and the family nurse station comprises a behavior monitoring module for recognizing abnormal movement behaviors of the patient and giving an alarm. The remote medical care system is convenient to interchange and high in big data processing capacity, and meets the requirements of common disease diagnosis, treatment, consultation and nursing.
Owner:TAIMAI TECH BEIJING

System and method for achieving dual-network content distribution of IPv4 and IPv6

The invention discloses a system and method for achieving dual-network content distribution of the IPv4 and the IPv6. The system and method for achieving the dual-network content distribution of the IPv4 and the IPv6 enables the network accessed users of the IPv4 and the IPv6 to be capable of accessing the content services of content service providers smoothly and effectively reduces service pressure of a source station at the same time. According to the technical scheme, a set of service cluster is arranged in the dual stack environment of the IPv4 and the IPv6, the system for achieving the dual-network content distribution of the IPv4 and the IPv6 comprises an IPv4 network processing module, an IPv6 network processing module, an access control module, a cache processing module and a source return processing module, the dual-network content distribution of the IPv4 and the IPv6 is achieved, and the network accessed users of the IPv4 and the IPv6 are made to be capable of accessing the content services of the content service providers smoothly, and do not need to care whether content servers are arranged in the IPv4 network or in the IPv6 network.
Owner:CHINANETCENT TECH

Remote medical care system with skin recognition function based on smart television

A remote medical care system with a skin recognition function based on a smart television comprises a detection device, a family nurse station, a cloud server and a medical care workstation, wherein the detection device is used for acquiring and transmitting physiological parameters, the family nurse station is used for receiving, storing, analyzing and uploading the physiological parameters and interchanging data including audios, videos, characters and pictures between a doctor and a patient, the cloud server is used for storing and analyzing a user database, and the medical care workstation is used for downloading and managing the data in the user database by medical staff and interchanging the data including the audios, the videos, the characters and the pictures between the doctor and the patient. The family nurse station uses the smart television as a hardware terminal, system building cost is reduced, and the detection device comprises a skin detection terminal for detecting and transmitting skin information. The remote medical care system is convenient to interchange and high in big data processing capacity, and meets the requirements of common disease diagnosis, treatment, consultation and nursing.
Owner:TAIMAI TECH BEIJING

Ordering system for catering industry

The invention discloses an ordering system for the catering industry. The ordering system comprises (1) a screening module, (2) a recommendation module, (3) a user display module, (4) an information transmission module and (5) a management interface module. The screening module divides a menu into a wine unit, a staple food unit, a cold dish unit and a hot dish unit. The recommendation module comprises a special food unit, a nutrition matching unit and a set meal recommendation unit. The user display module comprises a user selected adding unit, a user selected canceling unit and a user selected confirm unit. The information transmission unit comprises an information receiving unit for kitchen and an information-receiving unit for waiters. The management interface module comprises an order changing unit, a price changing unit and a check and confirm unit. The ordering system for the catering industry improves service quality, assists customers to learn features of dishes and understand the number and price of the ordered dishes at a glance, brings convenience to consumption and relieves service pressure of the catering industry.
Owner:蒋铭

Tourist-oriented tourism platform system and tourist-oriented tourism terminal

The invention discloses a tourist-oriented tourism platform system and terminal. The tourist-oriented tourism platform system comprises: a basic data layer used for acquiring static and dynamic data of scenic spots in real time; an operation layer which is used for collecting all data in the basic data layer and distributing the data to the application layer; and an application layer which is usedfor extracting required information from the operation layer and exchanging information with a user through human-computer interaction. The invention aims to provide the tourist-oriented tourism platform system and the terminal, so as to break through an information barrier between a tourism service industry and a service object in the prior art, realize self-adaptive adjustment of tourism passenger flow volume and flow direction, improve tourist experience to the greatest extent and reduce local service pressure.
Owner:四川省交通勘察设计研究院有限公司
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