48results about How to "Does not change the topology" patented technology

The invention relates to a method for filtering garbage speech on the basis of a mobile communication network, which comprises the following steps: setting the garbage speech reputation threshold value of a mobile terminal, downloading garbage speech user identification characters which are lower than the garbage speech reputation threshold value in a server, storing into a garbage speech user identification information base of the mobile terminal, obtaining calling user identification characters of call requests, searching the calling user identification characters from the garbage speech user identification information base, refusing the call requests by the mobile terminal if the calling user identification characters are searched, otherwise further judging whether query of the callinguser reputation threshold value to the server in real time is needed or not, and refusing the call requests by the mobile terminal if the calling user reputation threshold value is lower than the arranged garbage speech reputation threshold value. The characteristics of a mobile communication system are combined to prevent mobile communication terminal users from disturbance of garbage speech calls through analyzing the characteristics of mobile garbage speech and the defects of the existing garbage speech filtering technique.

The invention discloses a device for offsetting passive feedback network noise. The device is formed by a current parallel connection reversed feedback amplifier and a noise offsetting circuit. The current parallel connection reversed feedback amplifier is composed of a transconductance input stage and a current parallel connection reversed feedback network, and the noise offsetting circuit is composed of a noise current signal detection stage, a current signal amplification stage and a mixed current signal synthesis stage. The output end of the noise current signal detection stage, the current signal amplification stage, the mixed current signal synthesis stage and loads are in cascade connection in sequence, a signal source, the input end of the noise current signal detection stage and the input end of the transconductance input stage are in series connection in sequence, and the output end of the transconductance input stage, the input end of the current parallel connection reversed feedback network and the other input end of the mixed current signal synthesis stage are in series connection in sequence. By means of the device, noise of a passive feedback network to the amplifier can be reduced.

The invention discloses a method for improving the PTP time synchronization accuracy of an intelligent substation. The method includes: configuring the switch to the P2P mode of the IEEE1588 protocol; selecting a network split point; modifying the attributes of the switch on both sides of the split point; IV. The network is respectively connected to the clock source; the present invention provides a 1588 segmentation method, so that a string of switches can be divided into multiple sections, modify the properties of the cascaded ports of the switches at the segmentation point, limit the forwarding of clock messages, and then divide each Adding a clock source to the segment network reduces the number of cascaded switches in each network, thereby greatly reducing link delay and jitter, and greatly increasing the reliability and accuracy of network time synchronization.

The invention discloses a method for preparing a tantalum (Ta)-doped wolfram (W)-oxide adsorption nano-material. The method is characterized by comprising the following steps: weighing 7-10 parts by weight of sodium wolframate, putting the sodium wolframate into a polytetrafluoroethylene (PTFE) reaction kettle, and adding 7-10 parts of secondary distilled water so as to thoroughly dissolve the sodium wolframate; adding different volumes of tantalum-pentachloride ethanol solutions with the concentration of 0.05mol / L, so as to enable the Ta / W molar ratio of a solution to be 0.01-0.18, and mixing thoroughly; adding 7-10 parts of hydrochloric solution with the concentration of 2-3mol / L and 7-10 parts of ammonium sulfate solution with the concentration of 0.4-0.5mol / L into the PTFE reaction kettle, and stirring for 0.5-1 hour; sealing the PTFE reaction kettle, putting the PTFE reaction kettle into a programmed baking oven, respectively controlling the heating and cooling rates to be 1-2 DEG C / min, carrying out hydrothermal treatment for 24-48 hours at the temperature of 170-200 DEG C, taking out the reaction kettle, cooling to room temperature, washing a reaction product by using distilled water until the reaction product is neutral, putting the reaction product in a freeze drier with the temperature of -40 DEG C, and carrying out freeze drying for 24-48 hours, thereby obtaining the Ta-doped hexagonal-phase wolfram-oxide nano-material.

The invention discloses an aviation full-duplex exchange Ethernet monitoring processing system which comprises an AFDX exchange device, a terminal and a monitoring device, wherein the monitoring device is connected with a data link node between the AFDX exchange device and the terminal by a monitoring link, and is used for acquiring and processing the data link information of AFDX network transmission. The invention can guarantee the integrity of AFDX network data transmission, saves the memory space of the exchange device, and ensures the stability of the exchange device.