132results about How to "Small coverage" patented technology

An ADC is disclosed which has, as a first stage, a successive approximation converter, or other compensated, direct comparison converter, followed by a sigma delta modulation converter as a second stage. The sigma delta converter may beneficially be a first order modulator. The resulting ADC combines accuracy with low power consumption per conversion, and thus is particularly suited for use in temperature sensors for applications such as RFID transponders. Such a temperature sensor and an RFID transponder are also disclosed. There is also disclosed a method of analog-to-digital conversion, comprising a first successive approximation register or other compensated, direct comparison conversion stage followed by a sigma delta modulation stage, which, further, may be combined with providing a proportional-to-absolute-temperature (PTAT) signal, for low-power, accurate temperature sensing.

The invention discloses an efficient multi-objective optimization method for a satellite constellation and belongs to the field of constellation system of a spacecraft. The method comprises the stepsof determining an initial condition based on a Walker-delta constellation configuration, and establishing a constellation orbit kinetic equation, an earth coverage analysis module and an earth observation resolution model; optimizing an earth orbit height, an orbital inclination and an ascending node right ascension with a coverage percentage and a ground pixel resolution by use of a sequential radial basis function multi-objective optimization strategy; and constructing an objective function based on l2 weighting and an improved Pareto fitness function, replacing a high time-consuming constellation performance simulation model with an RBF (Radial Basis Function) agent model to optimize design, and updating and managing the RBF agent model through sequence sampling in an interest interval.Therefore, a Pareto non-inferior solution set satisfying engineering requirements is acquired as a satellite constellation design scheme, the coverage percentage of a constellation for a target observation region is realized as high as possible, the pixel resolution of an effective load is realized as low as possible, the calculation cost and the design cost of the satellite constellation are reduced, and the Pareto leading edge search capability is improved.

The invention discloses a touch operation induction method. The method comprises the following steps: when detecting touch operation in a touch induction region of a mobile terminal, obtaining fingerprint information in the corresponding touch region of the touch operation; dividing the touch region into sub-regions by the fingerprint information; when the touch region is divided into the plurality of sub-regions, taking the sub-regions matched with the pre-set fingerprint information as an effective touch region corresponding to a touch operation input instruction. The invention discloses a touch operation induction device. According to the touch operation induction method, a region meeting the use habits of a user is selected from the touch region of the touch operation according to the pre-set fingerprint information so that the covering range of the touch region is reduced and the possibility of generating incorrect touch, caused by touch, is reduced; furthermore, the technical problems that a virtual key is difficult to accurately trigger and incorrect touch operation is easy to cause are solved.

The present application discloses a method for data transmission in a radio cell of a mobile terminal. The radio cell includes an auxiliary carrier in a low frequency band and at least one master carrier in a high frequency band, the method including: the mobile terminal achieving downlink synchronization with the radio cell through the auxiliary carrier in the low frequency band, and after achieving the downlink synchronization, obtaining configuration information of the radio cell, and transmitting data by using the master carrier and/or the auxiliary carrier according to the configuration information. The present application also provides a mobile terminal. By using the present application, radio cell coverage and transmission performance may be improved.

The invention discloses an air-sea cooperative monitoring system achieving cross-media communication. The air-sea cooperative monitoring system comprises an underwater monitoring device, a water surface monitoring device and a buoy relay device; and the underwater monitoring device is an autonomous submersible and is used for conducting underwater monitoring, the water surface monitoring device is used for conducting water surface monitoring, the buoy relay device achieves communication connection with the underwater monitoring device and the water surface monitoring device separately, and the underwater monitoring device and the water surface monitoring device cooperatively work through monitoring information exchange. The invention further discloses a using method of the air-sea cooperative monitoring system achieving cross-media communication. The air-sea cooperative monitoring system achieving cross-media communication is wide in monitoring range, high in flexibility, good in reliability and low in cost, has a certain autonomous cooperation function and can monitor the water surface environment condition and the underwater environment condition simultaneously.

A universal external door/window sun-shading integration system for building includes a door/window frame (1), a door leaf/window sash (2), a screen window (3), a roller shutter (4), a ventilator (5), a concealed theft-proof device (6) and a controlling system, in which, the ventilator (5) is mounted in the door/window frame (1), the concealed theft-proof device (6) is provided at the outer side of the door/window frame (1), and the screen window (3), the roller shutter (4) and the ventilator (5) are controlled by the indoor controlling system.

The embodiment of the invention discloses a transmitting power control method for a wireless local area network and a mobile terminal. The method comprises the steps of detecting whether a state parameter of at least one wireless network satisfies a preset condition or not, wherein the state parameter is obtained by scanning by the mobile terminal, and the at least one wireless network corresponds to at least one available wireless access point; adjusting transmitting power of transmitting data to the at least one available wireless access point when it is detected that the state parameter of the at least one wireless network satisfies the preset condition; and transmitting the data to a target wireless access point according to the transmitting power after adjustment when the wireless network corresponding to the target wireless access point is accessed and a data transmitting request for an application is detected, wherein the transmitting power after adjustment is lower than the transmitting power before adjustment. The embodiment of the invention also discloses the corresponding mobile terminal. According to the method and the mobile terminal, the mutual interference between the mobile terminals can be reduced, and the communication quality is improved.

The invention discloses a mining PHS wireless communication comprehensive management system, which comprises a central server, a dispatch switch, a base station controller, a base station, a mining personal handphone system handheld device and an identification card, wherein the central server is connected with the base station controller through the dispatch switch; the base station controller is connected with the base station; a communication antenna and a positioning antenna are respectively connected with the base station; the base station receives a wireless communication signal of the mining PHS handheld device through the communication antenna; and the base station collects signals of the identification card through the positioning antenna. The mining PHS wireless communication comprehensive management system is integrated with the function of the mining PHS and functions of a staff positioning system, not only can search position of each staff member in a monitor room, but also can realize wireless communication with convenient use and high efficiency. When an emergency happens, the system can well organize staff to evacuate and escape; a single plate for the whole design is fixed in an explosion-proof tank, so the system has a concise structure and convenient connection, reduces cost for hardware, hardware failures and workload for daily maintenance.

It is described a method for paging a user equipment (107) within the telecommunication network. The method comprises selecting an optimized area (113) within a location area (111) being assigned to the user equipment (107), wherein at least two base stations (105A, 105B) are assigned to the optimized area (113). Further, the method comprises sending a paging message from a core network element (101, 103) serving the location area (111) to the at least two base stations (105A, 105B). The method also comprises paging the user equipment (107) from the at least two base stations (105A, 105B) being assigned to the optimized area (113). It is further described a base station (105A, 105B), a core network element (101, 103) and a telecommunication network, which are adapted to carry out the described paging method. Also it is described a program element, wherein the program element when being executed by a data processor is adapted for controlling the described paging method.

The invention discloses WLAN high-density user coverage method and system thereof under open environment, and a centralized controller. The WLAN high-density user coverage method under open environment comprises the following steps of: configuring APs to enable frequency points of adjacent APs to be different; setting a minimum-rank modulation mode of the first AP according to signal levels and a signal to interference ratio of signals which are sent by the second AP adjacent to the first AP and are received by the first AP; and controlling the first AP to refuse to access to a terminal lower than the minimum-rank modulation mode. The invention also discloses a WLAN high-density user coverage system and a centralized controller under the open environment. Through setting the minimum-rank modulation mode of the APs, the invention limits access of a user so as to enable the user to access to the AP nearer; and under working at a higher modulation mode, the invention shrinks the coverage range of the AP in a disguised form, lowers same frequency interferences, and improves network overall efficiency.

A method is disclosed for making contact with a semiconductor substrate, in particular for making contact with solar cells, in which a metallic seed structure is generated on the surface through a dielectric or passivating layer by means of an LIFT process, and the seed structure is then reinforced.

The invention discloses a method for optimizing the coverage of nodes of a wireless sensor network. The method is characterized in that the coverage of the nodes of the wireless sensor network is defined as a discretization plane geometry problem, wireless sensors are idealized into standard circles with radiuses within a communication range, the circles are overlapped, centers of the circles are constrained, and then the circles are optimized by an evolution mechanism of a differential evolution algorithm. Overlapped areas among the sensors need to be reduced in order to increase a regional coverage rate, and the coverage capacity of the sensors can be efficiently utilized in a non-overlapping manner. The method has the advantages that the sensors are rearranged when the quantity of the overlapped sensors is excessively high, and an experiential threshold overlapping value (for example, an optimization effect is realized when 20-40 wireless sensors are distributed in 100X100 monitored regions and the threshold overlapping value n is equal to 6) can be obtained after repeated experimental comparison.

The invention provides an unmanned aerial vehicle flight limitation management method based on frequency modulation data broadcasting, an unmanned serial vehicle and a management center. The method comprises the steps of receiving and demodulating a frequency modulation data broadcasting signal sent by the management center, wherein the frequency modulation data broadcasting signal comprises a positioning information frame and a flight limitation information frame; computing own flight state information according to the positioning information frame; and when the condition that the own flight state information conforms with limitation of the flight limitation information frame is detected, sending alarm information conforming with flight limitation to a control terminal. According to the method provided by the invention, the positioning information and the flight limitation information are sent in a frequency modulation data broadcasting manner, and download traffic charges of a user are reduced while network connection resources are saved.

A method carried out by a network device comprising a plurality of network adapters for transmitting and/or receiving data through a first group of network adapters. Each network adapter of the first group of network adapters is capable of using a plurality of communication technologies for transmitting and/or receiving data. The each network adapter is configured to use a corresponding communication technology for transmitting and/or receiving data. The each network adapter is configured by a configuration corresponding to each network adapter.

A machine tool having a transparent observation window on a front surface of a cover that encloses a machining area space, and a display device provided in the observation window that becomes transparent or semi-transparent when a displayed image disappears. A control panel may be arranged below the observation window.

The invention discloses a pure electric drive unmanned coal pusher. The pure electric drive unmanned coal pusher is used for carrying out stacking work of coal in a coal yard, a UWB positioning module, a UWB positioning base station and a central control room control system are mounted in the coal yard, the pure electric drive unmanned coal pusher comprises an unmanned coal pusher body, an angle sensor, a UWB positioning label, a laser module detection device, a monitoring camera and an ultrasonic radar, the unmanned coal pusher body is provided with a motor driving system, the efficiency of atransmission system is improved, noise generated during running is reduced, due to the variable frequency function, adjustment of motor rotating speed is convenient, a transmission with the giant size is reduced, precise control over the coal pusher speed and power can be achieved, the technical foundation is provided for unmanned driving of the coal pusher, and the unmanned driving safety and reliability can be effectively improved.

In a repeater, a mechanism checks multiple parameters and makes repeater bandwidth, radio configuration, and ADC clock speed adjustments. multiple repeater parameters are checked and the repeater bandwidth is optimized based upon any of adjusting bandwidth based on best throughput; adjusting bandwidth based on Internet speed; adjusting mapping based on overlapping access points (106); adjusting bandwidth based on the client's range; adjusting ADC clock speed; adjusting transmit (TX) radio setting based on associated clients; adjusting receive (RX) radio setting based on associated clients; client type considerations; and adjusting CPU settings based on clients or backhaul. In embodiments, for example, bandwidth can be adjusted from 80 MHz to 40 MHz to 20 MHz or a smaller bandwidth, e.g. 5 MHz, for an 802.11ac/11ax/11ac device. For an 802.11n/a/b/g/ah device, bandwidth can adjusted using from 40 MHz to 20 MHz to a smaller bandwidth, e.g. 1 MHz, 2 MHz, or 5 MHz.