85results about How to "Does not affect data transfer" patented technology

The embodiments of the invention disclose a method, a system and an apparatus for dynamically adjusting links. The method comprises the following steps: when detecting a variation of a data flow, a sending end determines link adjustment information according to the data flow variation, wherein the link adjustment information includes the amount of required work links; the sending end performs work link amount adjustment for the sending end interface according to the determined link adjustment information, and transmits a configuration request to a reception end, wherein the configuration request contains the link adjustment information; after receiving the configuration request, the reception end performs work link amount adjustment for the reception end interface in accordance with the configuration request. The embodiments of the invention adjust the work link amount when detecting the variation of the data flow, and do not affect the data transmission of the original work link during the period of adjusting the work link amount, thus saving the bandwidth and power consumption.

The invention provides an optical signal-to-noise ratio monitoring method and a device thereof. The method comprises the steps of measuring the first optical power of a to-be-monitored optical signal; after bandpass filtering is performed on the to-be-monitored optical signal, measuring the second optical power of the to-be-monitored optical signal after bandpass filtering; and determining the signal-to-noise ratio of the to-be-monitored optical signal according to the first optical power, the second optical power, the filtering coefficient of bandpass filtering to the optical signal and the filtering coefficient of bandpass filtering to the noise. The optical signal-to-noise ratio monitoring method and the device realize optical signal-to-noise ratio monitoring of the received optical signal without modification of a transmitter or data transmission influence and without affecting data transmission.

The invention discloses an object identification method based on UWB communication signals. According to the object identification method based on the UWB communication signals, a wireless sensor network is formed by a plurality of communication nodes, wherein each node comprises multiple MIMO antennas to receive signals. Firstly, characteristic parameters of signals received by the multiple antennas are extracted, parameter fusion is carried out on the extracted characteristic parameters, and a classification model is obtained through a fusion parameter training classifier. The classification model enters an identification mode after training is completed, and an object is identified by using the classification model. Through the utilization of the multi-antenna technology, the accuracy of object identification is improved, the anti-jamming capability of a system is enhanced, and normal wireless node communication is not influenced.

The invention relates to a low-power dissipation on-line collecting system and a collecting method based on backup redundant data. Temperature gathering nodes on each link are sequentially connected in serial communication from (m, N) to (m, 1), the collection of temperature data can be achieved without the arrangement of an individual wireless data concentrator, and the cost of the on-line collecting system is greatly reduced. Meanwhile, each temperature gathering node receives and stores temperature data detected by redundant nodes, and when a certain transmission route goes wrong due to the that a certain temperature gathering node goes wrong or is incapable of working normally due to low power, the temperature data of the transmission route can be transmitted through the transmission routes formed by other temperature gathering nodes to achieve the function of redundant data communication. When a certain temperature gathering node or certain temperature gathering nodes go wrong or cannot transmit data, the fact that the data transmission of other temperature gathering nodes is not affected is guaranteed, and therefore a large area of communication failure caused by the invalidation of a certain temperature gathering node can be avoided, and stability is good.

The invention discloses an IEEE 1394 interface communication system of a motion controller and comprises a DSP circuit, a dual-port RAM memory circuit, an IEEE 1394 controller circuit, an IEEE 1394 communication interface socket circuit, a voltage control circuit and a reset circuit. The DSP circuit is connected with the IEEE 1394 controller circuit, the dual-port RAM memory circuit, the voltage control circuit and the reset circuit respectively through lead wires; the IEEE 1394 controller circuit is connected with the voltage control circuit, the reset circuit and the IEEE 1394 communication interface socket circuit respectively through lead wires; the dual-port RAM memory circuit is connected with the voltage control circuit voltage through lead wires; the IEEE 1394 communication interface socket circuit is connected to a host computer through an IEEE 1394 transmission cable. The invention can realize high-speed data transmission under the support of the IEEE 1394 protocol, and support plug-and-play, hot-swap, isochronous and asynchronous data transmission.

The invention discloses a keyboard with a wireless and wired switching function. The keyboard comprises a keyboard base, a main keyboard body and an auxiliary keyboard body, wherein the main keyboardbody and the auxiliary keyboard body are movably arranged on the keyboard base, a plurality of first connectors are arranged on the keyboard base, a plurality of second connectors matched with the first connectors are arranged on the main keyboard body and the auxiliary keyboard body, and a wireless emission module is arranged on each of the main keyboard body and the auxiliary keyboard body. Through the keyboard, free switching between a wired keyboard and a wireless keyboard according to a specific demand can be realized, and the keyboard is fast and convenient to install and dismantle, highin practicability and high in structural stability.

The invention discloses a video monitoring system adopting wind/solar complementary power supply under a wireless Mesh network. The system has the functions of monitoring a large target area under the Mesh network and giving a fire alarm and an antitheft alarm, adopts the wind/solar complementary power supply, and is quick in deployment and convenient to mount and upgrade. Image quality and bandwidth occupation can be regulated. The system adopts software coding and decoding, and can regulate a frame number, resolution, the image quality and the like according to the needs of a user and realize the function of storing and replaying received video monitoring images by a computer or special equipment. The system supports a browser-technology-based network browsing function, and is convenient to use. A plurality of hops of routers are adopted for transmission, so normal data transmission can be ensured not to be influenced under the condition that an individual router is damaged or fails. The system and equipment have lightning protection capability, high voltage interference resistance and powerful data and alarm acquisition control and processing functions, can be normally run under the environments of high temperature, low temperature, strong wind, dust flying, torrential rain and the like, are widely applied in the fields of ports, wireless campuses and the like, and are seamlessly combined with a data monitoring system to realize the linkage of light and an alarm whistle and video recording in alarming.

The invention provides a POE power source receiving method and a POE power source receiving device. The method comprises the steps that a power source is connected from n network ports of a POE power supply device respectively through n PD interface circuits, wherein n >=2; the working state information of the PD interface circuits is detected, and the AND operation is carried out according to the working state information to obtain an enable signal controlling electricity supplying; according to the enable signal, the working state of the multi-phase switch power source is controlled due to the fact that the multi-phase switch power source is connected with the output power sources of the PD interface circuits, wherein the multi-phase switch power source is provided with at least n power source input ends which are mutually independent, and the output voltage of the multi-phase switch power source is adjusted and output to a system device. According to the technical scheme, the power supply power of a POE device can be increased, data transmission cannot be affected, the safety of power source receiving can be effectively guaranteed, and the working stability of the system device is improved.

The embodiment of the invention provides a method and system for detecting a bandwidth, and devices and relates to the technical field of computer network. The method and system may quickly detect the bandwidth and do not influence normal data transmission in the network. The method comprises steps that a source-end device sends a first bandwidth request message to a forwarding device, wherein the IP address of the first bandwidth request message is the IP address of a destination-end device; the source-end device receives a bandwidth response message sent by the forwarding device, wherein the bandwidth response message includes the IP address and the bandwidth of the forwarding device; and the source-end device stores the bandwidth and generates a second bandwidth request message, wherein the time to live (TTL) of the second bandwidth request message is greater than that of the first bandwidth request message.

The embodiment of the invention provides a communication method and device for a time division duplex system for effectively guaranteeing normal communication of a base station and user equipment and relates to the technical field of communication. The communication method comprises the steps that: a first up/down link sub-frame configuration is regulated into a second up/down link sub-frame configuration; a sub-frame corresponding to the second up/down link sub-frame configuration is intersected with a sub-frame corresponding to the first up/down link sub-frame configuration; the intersection is a collection of sub-frames with the same sub-frame index and in the same sub-frame type; the intersection comprises at least one uplink sub-frame and at least one downlink sub-frame; and communication with the user equipment is carried out in at least one uplink sub-frame and at least one downlink sub-frame of the intersection based on a same timing relationship with the timing relationship corresponding to the first up/down link sub-frame configuration. The communication method and the communication device are suitable for wireless communication systems.

The invention discloses a photoelectricity curtain wall monitoring system based on the Internet of Things, and belongs to the technical field of the Internet of Things wireless transmission. The computer network technology, the advanced Zigbee wireless communication technology and the GPRS communication technology are adopted, and therefore real-time, accurate and intelligent monitoring management is carried out a photoelectricity curtain wall generating system. The photoelectricity curtain wall monitoring system comprises a detecting sensor, a wireless sensor node and a central controller all of which are installed inside a combiner box, the wireless sensor node is composed of a wireless transceiver and a PCB antenna, the signal output end of the detecting sensor is connected with the input end of the wireless transceiver of the wireless sensor node, and the output end of the wireless transceiver is communicated with the central controller through the PCB antenna of the wireless sensor node and the Zigbee wireless communication protocol of the Internet of Things.

The invention provides a method for realizing locomotive marshalling by using a WTB-Ethernet gateway, so as to adapt to the specific application requirements of domestic locomotives, meet the nationalstandard IEC-61375, and realize marshalling among locomotives with different models and different power systems. Three tasks are maintained in a UC/OS system and comprise a main task and two auxiliary tasks. In the process of detecting the equipment, the main task and the auxiliary tasks are both in a running state or a waiting state, task switching is carried out at any time to complete marshalling of newly added equipment, meanwhile, the auxiliary tasks continuously send a detection frame to determine whether a new node is added or not, and the method can monitor the addition of the equipment in real time within a ms-level time range.

The invention provides a method used for reducing the roughness of the in-band power of the transmitter, a multiplexer and a transmission system. The information source data are encapsulated into a multiplex frame which is composed of three fields, including a multiplex frame head, a multiplex frame payload and a filling field. The method includes the procedures as follows: the filling field is filled with a random data sequence or a fixed data sequence with balance energy to ensure the data in the multiplex frame to realize balance energy after the modulation. Based on the method provided by the invention, the multiplexer and the transmission system, when the information source data are encapsulated into a multiplex frame, the filling field of the multiplex frame is filled with the random data sequence or the fixed data sequence with balance energy to reduce the fixed data sequence with unbalance energy in the information source data before the modulation of the transmission system and ensure the data in the multiplex frame to realize balance energy after the modulation; thereby, the roughness of the in-band power is improved; the damage for the transmitter is reduced and the requirement of stable operation of the system is well fulfilled.

The invention relates to the field of embedded chips, and provides a synchronous serial bus multiplexing method and device, a terminal and a non-temporary computer readable storage medium. The invention aims to reduce the number of consumed pins when a main chip is connected with VGA and IC interfaces. The method comprises the following steps that an input/output pin driven by a multiplex drivingmodule is applied for as a pin, corresponding to a synchronous serial bus, of a main chip; the multiplexing driving module judges a driving module corresponding to a current application; if the driving module corresponding to the current application is a driving module of hardware equipment corresponding to a first interface, the input/output pin driven by the multiplexing driving module is applied to the first interface; and if the driving module corresponding to the current application is a driving module of hardware equipment corresponding to a second interface, the input/output pin drivenby the multiplexing driving module is applied to the second interface. According to the invention, pin resources of the main chip are saved, convenience is provided for adding other more functions tothe main chip, and multiplexing of the synchronous serial bus is realized on a software level.