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258results about How to "Restricted access" patented technology

Networking method of wireless electricity consumption information acquisition ad hoc network

The invention relates to a networking method of a wireless electricity consumption information acquisition ad hoc network. According to the technical scheme, the networking method of the wireless electricity consumption information acquisition ad hoc network includes the steps that first, the network is established; second, child nodes without access to the network search for a network center coordinator or child nodes with access to the network; third, the child nodes without access to the network which are searching for the network select the network center coordinator or the child nodes with access to the network as ancestor nodes and send network access requests to the ancestor nodes; fourth, after the ancestor nodes receive the network access requests, network access addresses are allocated to the child nodes applying for access to the network; fifth, the child nodes applying for access to the network send the network access addresses and fixed addresses to the network center coordinator; sixth, if the network center coordinator agrees with that the child nodes applying for access to the network have access to the network, the child nodes applying for access to the network successfully get access to the network, if the network center coordinator does not agree with that, reject information is returned to the child nodes applying for access to the network, and after receiving the information, the child nodes applying for access to the network execute the second step to the sixth step till successfully getting access to the network. The networking method of the wireless electricity consumption information acquisition ad hoc network is used in the field of wireless acquisition of electricity consumption information.
Owner:HANGZHOU XUNLONG TECH

Method for running bridge plug sitting tool by means of differential pressure and bridge plug sitting tool utilized by same

ActiveCN102635328ARestricted accessThe sealing process is stableSealing/packingUpper jointDifferential pressure
The invention relates to a method for running a bridge plug sitting tool by means of differential pressure and a bridge plug sitting tool used by the same. When a bridge plug is sit, the bridge plug is electrified from the ground through a cable, an electromagnetic valve is turned on or a rupture disk is ruptured, a liquid inlet hole is opened, or a clock is turned on to drive an upper mandrel to move, annulus fluid enters into the tool to drive a piston to move upwards due to the differential pressure with an air chamber, the bridge plug is sit, and the piston moves continuously and upwards so as to be released from the bridge plug. The bridge plug sitting tool has three types such as an electromagnetic valve control type, a rupture disk control type and a clock control type, and consists of a cable connecting joint, an upper joint, an upper outer cylinder, a middle outer cylinder, a lower outer cylinder, an adjusting nut, a push rod, one bridge plug connecting joint, an internally-arranged electromagnetic valve, an internally-arranged contact switch, an upper mandrel, a piston, an upper piston rod, a lower piston rod, another bridge plug connecting joint and the like which are in threaded connection with one another. According to the invention, the bridge plug is stable in sitting process, and small in vibration, and when the bridge plug is connected with a perforation hole in parallel, a perforation apparatus can not be vibrated to be broken; and when the bridge plug is released, the contact switch can be touched, so that a conducting wire is disconnected, and the tool provided by the invention is obvious in ground display.
Owner:CHINA PETROLEUM & CHEM CORP +1

Automatic switchover method of service application channel based on open intelligent gateway platform

The invention discloses an automatic switchover method of a service application channel based on an open intelligent gateway platform. The automatic switchover method comprises the following steps: S1, a user logs in to an intelligent gateway platform system; S2, user equipment and gateway equipment are bound; S3, a convergent central server transmits user account information to the gateway equipment; S4, the user equipment transmits a command for connection to an extended service application channel to the gateway equipment; S5, the gateway equipment is connected to an access server; S6, the gateway equipment issues a command request to the access server to execute configuration and installation of an extended service application plug-in and a timer is started; and S7, the gateway equipment judges whether the no-operation time between the gateway equipment and the access server exceeds a set time. If so, the gateway equipment and the access server are disconnected, and the gateway equipment automatically switches to a basic service application channel; if not, the step S6 is continued to process until configuration and installation are completed. According to the automatic switchover method, quick and flexible deployment of a new service application of the intelligent gateway platform is implemented, and the automatic switchover method has the advantage of good industrial application prospect.
Owner:SHENZHEN FENGLIAN TECH

Certificate declaration management system and certificate declaration management method

The invention discloses a certificate declaration management system and a certificate declaration management method. The system comprises a certificate management platform, a declarant's mobile terminal, an electronic access management side, a self-service declaration equipment side, a self-service certificate handling equipment side, and a floating population management relevant department side. The method comprises the steps of getting declarant information from the floating population management relevant department side, judging whether the declarant information is approved by the floating population management relevant department side, generating a QR code according to the approved declarant information when judging that the declarant information is approved, and pushing the generated QR code and the declarant information to the declarant's mobile terminal, the electronic access management side, the self-service declaration equipment side, the self-service certificate handling equipment side and the floating population management relevant department side. According to the invention, a QR code used as the unique electronic identifier of a declarant can be generated according to the approved declarant information, use of certificates on the Internet is facilitated, and convenience in management and use is increased.
Owner:广州市华标科技发展有限公司
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