36 results about "Power relationship" patented technology

Wireless terminals, e.g., mobile nodes, receive, identify, and measure broadcast signals from a plurality of cells. They determine relative transmission power relationships corresponding to the received measured signals and determine at least two channel gain ratios. A geographic area is determined corresponding to the obtained at least two channel gain ratios and information indicating the geographic region in which such gain ratios may be detected. Each cell's base station transmits broadcast signals, e.g., beacon signals, pilot signals, and / or assignment signals for one more carriers. Some base stations use multiple carriers at different power levels. Some adjacent cells use different power levels for the same carrier. This carrier diversity approach tends to reduce overall interference in the system, yet provides mobiles with a variety of different strength signals which may be monitored and which vary as a function of distance from the source transmitter.

Wireless terminals, e.g., mobile nodes, receive, identify, and measure broadcast signals from a plurality of cells. They determine relative transmission power relationships corresponding to the received measured signals and determine at least two channel gain ratios. A geographic area is determined corresponding to the obtained at least two channel gain ratios and information indicating the geographic region in which such gain ratios may be detected. Each cell's base station transmits broadcast signals, e.g., beacon signals, pilot signals, and / or assignment signals for one more carriers. Some base stations use multiple carriers at different power levels. Some adjacent cells use different power levels for the same carrier. This carrier diversity approach tends to reduce overall interference in the system, yet provides mobiles with a variety of different strength signals which may be monitored and which vary as a function of distance from the source transmitter.

The invention relates to a method, a computer program product and a device for evaluating a code which is orthogonal to one or more further codes. The method comprises the steps of receiving a signal which carries a code containing a sequence of code symbols, determining for a particular symbol instant at least one channel estimate, determining for the particular symbol instant a compensation value taking into account the at least one channel estimate, compensating each code symbol using the compensation value determined for the corresponding symbol instant, wherein the compensation is performed such that an original power relationship among the individual code symbols contained in the code is restored, and evaluating the code on the basis of the sequence of compensated code symbols exploiting the orthogonality to further codes.

This invention relates to one micro angle measurement method and device based on laser self mixture and intervene, which comprises the following steps: sending the laser beam output by laser into reflection lens of object surface and the incidence line goes off object angle rotation center and the laser output power uses one photoelectricity detector and when the object changes by micro angle, the detector detects laser output power; the angle change leads feedback light process each length and the output laser power changes one ripe circuit and through pre-set angle and output power relationship to realize object rotation angle.

A method and apparatus for managing an Inline Power relationship between and among a first network device acting as power sourcing equipment (PSE) to provide Inline Power to a second Powered Device (PD) and a third device. In one aspect of the invention, the powered device(s) and the third device are powered (at least in part) by the PSE using inline power from at least one port (which may include more than one PSE) and they are powered over one or more sets of cables.

The invention discloses a method and a device for processing power parameters. The method comprises the following steps: user equipment (UE) acquires the power relationship parameter and the ratio of a first kind of sub-frames and a second kind of sub-frames, wherein the power relationship parameter is used for indicating the power relationship of the first kind of sub-frames and the second kind of sub-frames; and the UE performs data demodulation operation and / or channel measurement operation on the first kind of sub-frames by utilizing the power relationship parameter and the ratio. Through the method and the device provided by the invention, the problem that the data demodulation or channel measurement of the UE is inaccurate due to different power configurations of different kinds of sub-frames in correlation techniques is solved, and the system performance is improved.

The invention provides a method for measuring the internal quantum efficiency and the internal loss of a laser through changing the effective reflectivity with an external optical feedback device. The method comprises the following steps: S1: an external optical feedback device is arranged on a laser optical path; S2: a cavity surface of the laser and a mirror surface of the external optical feedback device are equivalent to an equivalent cavity surface, and through change of the reflectivity of the external optical feedback device, the feedback intensity is adjusted and the output power of the laser is changed; S3: the current - power relationships of the laser at different feedback intensities are measured and a plurality of I - P curves are obtained; S4: the external differential quantum efficiency of each feedback intensity is calculated from the I - P curve; and S5: the internal quantum efficiency and the internal loss of the laser are obtained through fitting on the basis of the functional relationship between the external differential quantum efficiency and the reflectivity of the external optical feedback device. The method is characterized by needing only one laser, so that the method eliminates discrete errors brought by multi-laser measurement. Meanwhile, the method is convenient and fast with a low cost and high reliability.

The invention relates to a load flow calculation method based on a generator node type. The method is characterized in that a load flow calculation model containing a P beta node is generated by defining the P beta node, a new Jacobian matrix equation is established by adopting a Newton-Raphson method and finally the equation is modified to realize load flow iterative solution. By using the method, different voltage regulation requirements can be met by adjusting beta under the condition of given upper and lower limits of generator reactive power according to different positions of a generator in a system, the reactive regulation capacity of the generator can be fully utilized by correctly selecting beta, the situation that the generator loses the regulation capacity and becomes a PQ node due to a reason that reactive power exceeds the limits is avoided, and the actual voltage-reactive power relationship during the voltage regulation of the generator can be reflected.

The invention discloses a reactive power regulation method for fans in a wind power farm under remote-control failure condition. The reactive power regulation method comprises a judgment mechanism of remote-control faliures, a conversion mechanism of a remote-control failure occurance trigger remote control mode and a one-machine mode, and a calling mechanism of a one-machine reactive power regulation mode, which are all triggered to be executed according to a certain time order in sequence, wherein the one-machine reactive power regulation mode is as follows: setting an active power-reactive power relationship curve of each fan in the wind power farm; and performing one-machine reactive power regulation according to change rules of the curve, wherein the curve is obtained by analyzing long-time operation record data of one fan in a whole regulation mode under a normal remote-control state. The reactive power regulation method has a good reactive power supporting capability in a remote-control failure state, and stablility of the bus voltage of the wind power farm under a remote-control failure condition can be guaranteed and a stable power grid is maintained.

The invention discloses a feasibility analyzing method for accessing distributed power supplies into a transformer station based on voltage deviation. The feasibility analyzing method comprises the following steps of (1) extracting voltage data of a power distribution network through a data acquisition system; (2) calculating the voltage deviation; (3) calculating the limit range of the power distribution network of the transformer station; and (4) calculating the maximal accessing scale of the power distribution network of the transformer station which accesses into the distributed photovoltaic power generation system. The data which is extracted from the step (1) are extracted and the voltage deviation of the power distribution network of the transformer station is calculated. According to a standard requirement, the limit range of the voltage of the power distribution network of the transformer station is obtained. The P-U relationship of different load characteristics of the power distribution network of the transformer station is obtained through analyzing according to a voltage stability P-U curve. The maximal value of the active power of the distributed photovoltaic power generation system which is accessed into the transformer station can be obtained according to the current, the receive-side voltage and a power relationship. Furthermore the maximal accessing scale of the power distribution network of the transformer station which accesses into the distributed photovoltaic power generation system is obtained.

A system and methods for providing substantially uninterrupted electric power to one or more critical loads that significantly allows superior utilization of equipment and physical space, as well as reduction in the environmental footprint of systems for providing substantially uninterrupted electric power to one or more critical loads. The system and methods comprise an arrangement of power modules configured for providing substantially uninterrupted electric power to one or more critical loads using a combination of loads. The combination of loads generally follows a detailed method that comprises grouping of loads and mathematically determining the power relationships between the power modules and one or more loads. Generally, the method comprises determining the characteristics of the power lines that deliver substantially uninterrupted electric power from the power modules to one or more critical loads. Further, the system may comprise a plurality of power delivery architectures.

The invention discloses a DF protocol based resource allocation method for a two-way relay cognitive radio system. The method comprises the following steps: utilizing the characteristic of volume maximization of the DF protocol to obtain a power relationship among a cognitive mobile user, a base station and various relays; utilizing the relationship, power limitation conditions of the cognitive user for signal transmission to the relays, and power limitation conditions of the base station for signal transmission to the relays, so as to obtain a signal-to-noise ratio of the two-way relay cognitive radio system during signal transmission through each relay; carrying out permutation and combination of all the signal-to-noise ratios, so as to obtain a signal-to-noise ratio combination, in which the sum of all the signal-to-noise ratios reaches the maximum value while satisfying interference limitation conditions; and obtaining the maximum system capacity, the corresponding relay, and the power of the relay for signal broadcasting according to the sum of all the signal-to-noise ratios in the obtained signal-to-noise ratio combination. The method provided by the invention has the advantages that the system capacity is enlarged; only the power of each relay for signal broadcasting needs to be obtained, so that the power obtaining process is simplified, and the complicity is reduced.

A method of monitoring a power transmission system of an aircraft, the aircraft including at least one main rotor driven in rotation by a rotor mast and an auxiliary unit having an auxiliary rotor. Control means control the auxiliary rotor. A power relationship is determined providing a first reduced power parameter of the auxiliary unit as a function of a position (POS) of the control means. A setpoint limit is set for a second power parameter for the rotor mast. A current position (POSACTU) of the control means is determined and a calculated value (Vcal) is also determined at least by applying the current position (POSACTU) to the power relationship. A limit value that is not to be exceeded by a power plant is determined, with the limit value being equal to the sum at least of the setpoint limit plus the calculated value.

A method of monitoring a power transmission system of an aircraft, the aircraft including at least one main rotor driven in rotation by a rotor mast and an auxiliary unit having an auxiliary rotor. Control means control the auxiliary rotor. A power relationship is determined providing a first reduced power parameter of the auxiliary unit as a function of a position (POS) of the control means. A setpoint limit is set for a second power parameter for the rotor mast. A current position (POSACTU) of the control means is determined and a calculated value (Vcal) is also determined at least by applying the current position (POSACTU) to the power relationship. A limit value that is not to be exceeded by a power plant is determined, with the limit value being equal to the sum at least of the setpoint limit plus the calculated value.

The invention discloses a method for controlling a multi-computing-power board based on a single-path power supply. The method is suitable for a main control board to control the single-path power supply to output voltage to multiple computing power boards, and is characterized by comprising the following steps: establishing a voltage, computing power board optimal frequency point and first computing power relationship correspondence table; establishing a voltage, calculation power board frequency point, second calculation power and total power relationship correspondence table; and accordingto the selected working mode, inquiring the voltage, the optimal frequency point of the computing power board and the first computing power relationship corresponding table or inquiring the voltage, the frequency point of the computing power board, the second computing power and the total power relationship corresponding table, and calculating and outputting corresponding voltage and characteristic frequency points to each computing power board. The invention further discloses a device for controlling the multi-computing-power board based on the single-circuit power supply. The invention relates to the technical field of power supplies. The method and the device for controlling a multi-computing-power board based on a single-path power supply overcome the technical problem of high cost ofthe existing three-path power supply control equipment, save the cost and can randomly switch the working modes of the computing power boards.

The invention provides an energy router modeling and optimization control method based on data driving, and the method comprises the steps: dividing the power data corresponding to the ports of an energy router into a load demand set and a scheduling set; obtaining enough data samples by collecting the electrical data of each port during the operation of the energy router, and then establishing a mathematical mapping model between two types of ports online by using a data mining technology as a power relationship constraint between the ports; meanwhile, establishing mathematical constraint forms corresponding to different optimization modes, converting the optimization scheduling mode of the energy router into an index optimization problem with constraints, and calling a group optimization algorithm to obtain optimization scheduling parameters; then establishing a model based on data driving between the optimal optimization scheduling parameters and the demand load, thereby realizing real-time optimization control of the energy router under different operation loads. The method realizes high transportability and high real-time optimization capability, and can be used for improving operation performance indexes of various energy routers.

The embodiment of the invention provides an electric vehicle power control method and device and a processing circuit. The method comprises the following steps: respectively receiving a voltage signal and a temperature signal output by a battery; the battery output voltage signal is used for describing the voltage output by a battery on the electric vehicle; the temperature signal is used for describing the temperature of the control module; determining a first limiting current corresponding to the battery output voltage signal based on a voltage-limited power relationship; the voltage-limited power relationship is used for limiting the relationship between voltage and current on the basis of combining the residual electric quantity of the battery; obtaining a second limiting current corresponding to the temperature signal through a temperature-limited power relationship; the temperature-limited power relationship is used for describing the relationship between the temperature and the current on the basis of limiting the temperature of the control module; and adjusting the output current of the control module according to the first limiting current and the second limiting current to control the running power of the electric vehicle. Through the method, the problem that the motor cannot work normally due to the influence of voltage or temperature is avoided, and the user experience is optimized.

The invention relates to the technical field of optical communications, and provides a method and a device for acquiring an equivalent 0km joint loss of a fiber node in a Raman fiber amplifier, wherein the method comprises the following steps of obtaining a pumping transmission power, a signal transmission power relationship, and an out-of-band ASE power relationship; dividing the optical fiber into one or two segments according to the position of the joint loss set in an optical fiber line; respectively, using formula as a weighted value and solving to obtain an out-of-band ASE power value; introducing the out-of-band ASE power value to the relational expression between the out-of-band ASE power and the equivalent 0km joint loss, and obtaining the equivalent 0km joint loss. The inventionprovides a method for acquiring equivalent 0km joint loss of fiber node in Raman optical fiber amplifier, so that the 0km equivalent joint loss value obtained by calculating the obtained distance equivalence of the joint to the pumping source can be used via the process of calculating the actual maximum gain.

An embodiment of the invention discloses a biasing circuit and an integrated module based on a GaAs PHEMT (pseudomorphic high-electron-mobility transistor) process. The biasing circuit comprises L-level biasing units, an output end of an i biasing unit is electrically connected with an input end of an (i-1) biasing unit, an input end of an L biasing unit is electrically connected witha voltage output end of a power supply, an output end of a first biasing unit is electrically connected with an output end of the biasing circuit, each biasing unit comprises a divider resistor and atleast one N-type transistor which are connected in series, a grid electrode of each N-type transistor is electrically connected with a drain electrode, the output voltage and the input voltage of anoptional biasing unit are in a 1 / 2-power relationship, and the influence of power voltage on the output voltage of the biasing circuit can be reduced by the aid of the L-level biasing units. The biasing circuit can solve the problem that biasing voltage outputted by an existing biasing circuit based on the GaAs PHEMT process is easily affected by the power voltage.

The invention discloses an intelligent electric torque wrench and belongs to the technical field of electric torque wrenches. The intelligent electric torque wrench comprises a mechanical switch, a speed change mechanism, a speed reduction mechanism, a wrench output shaft and a counterforce arm and further comprises a torque control system. The torque control system comprises a power source, a voltage sensor module, a power control module, the mechanical switch, a motor, a current sensor module, a microprocessor module, a display module and a keyboard input module, wherein torque-power relationship data are stored in the microprocessor module; a normally-open contact closing signal of the mechanical switch is transmitted to the microprocessor module; the microprocessor module inquires the torque-power relationship data according to a required torque value so as to obtain the power value of the motor and drives the power control module; the motor rotates according to the power value controlled by the power control module. The intelligent electric torque wrench is high in anti-jamming capacity, and the output torque control precision of the wrench is improved.

The invention relates to a load flow calculation method based on a generator node type. The method is characterized in that a load flow calculation model containing a P beta node is generated by defining the P beta node, a new Jacobian matrix equation is established by adopting a Newton-Raphson method and finally the equation is modified to realize load flow iterative solution. By using the method, different voltage regulation requirements can be met by adjusting beta under the condition of given upper and lower limits of generator reactive power according to different positions of a generator in a system, the reactive regulation capacity of the generator can be fully utilized by correctly selecting beta, the situation that the generator loses the regulation capacity and becomes a PQ node due to a reason that reactive power exceeds the limits is avoided, and the actual voltage-reactive power relationship during the voltage regulation of the generator can be reflected.

A method for port policy management for active charge through of a peripheral device that has a first communication port and a second communication port may include detecting whether a valid power connection exists at the peripheral device, in response to detecting the valid power connection, determining a relationship between the first communication port and the second communication port, based on the relationship, determining, by the peripheral device, a power relationship among the peripheral device, the first communication port, and the second communication port, selectively configuring the first communication port, the second communication port, and the peripheral device to match the power relationship, and enabling active charging through of the peripheral device if active charging through is supported by the power relationship.

The invention provides a calibration system and a method for a CD-ROM light-emitting device. The calibration system for a light-emitting device comprises a diode laser as a device to be calibrated, a first microprocessor, an optical detector and a signal calibration circuit. In a calibration mode, the first microprocessor controls power of the light-emitting device by changing values of a drive signal to the light-emitting device, receives a power indication corresponding to the light emitted by the light-emitting device, and determines a power relationship relating values of the drive signal to powers of the light-emitting device according to a power indication for each of a plurality of values of the drive signal. The light detector is used for detecting the light emitted by the light-emitting device to generate an analog signal having a direct ratio to the strength o the output light. The signal calibration circuit having a set reference voltage is used for generating a power indication reverse to the analog signal so as to guide the power indication to be a set maximum value when the analog signal shows that no light is output from the light-emitting device, wherein the set maximum value is a function of the set reference voltage.

A method and apparatus for managing an Inline Power relationship between and among a first network device acting as power sourcing equipment (PSE) to provide Inline Power to a second Powered Device (PD) and a third device. In one aspect of the invention, the powered device(s) and the third device are powered (at least in part) by the PSE using inline power from at least one port (which may include more than one PSE) and they are powered over one or more sets of cables.

The invention relates to the field of moulds, and provides a power design method for injection mold parts and heating pipes thereof. The injection mold part provided by the present invention includes a mold body and a plurality of heating pipes. The mold body has a plurality of first mold cavities distributed in m rows and n columns. The first mold cavities in each row are distributed along the first direction, and the first mold cavities in each row are first The mold cavity is distributed along the second direction, at least m+1 of the multiple heating tubes are distributed into m+1 rows along the first direction, and at least n+1 of the multiple heating tubes are distributed into n+1 along the second direction The plurality of heating tubes encloses m×n spaces, and each first cavity corresponds to each space one by one. The present invention designs the power relationship of each heating tube according to the dimensional parameters among the first cavity, the end face and the heating tube, which not only helps to make each first cavity receive uniform heating, but also helps to improve the molding quality, and also helps to reduce heating The number of design experiments of the tubes is beneficial to quickly determine the power of each heating tube.

The invention relates to a method for determining a voltage power relationship of a voltage droop control converter station. The invention aims to provide a method for determining a voltage power relationship of a voltage droop control converter station, which is suitable for a multi-terminal flexible direct current system and comprises the following steps of: S01, determining a node voltage equation of a whole direct current network by taking a converter station direct current voltage as a variable according to a topological structure of the direct current system and a direct current line parameter; based on the node voltage equation, determining the direct current of any direct current line and the direct current of the converter station so as to determine an analytical formula of the loss of the whole direct current system; S02, selecting various typical operation conditions of the multi-terminal flexible DC system, and calculating the voltage and power level of each converter station under the condition that the loss of the DC system is minimum for each condition; and S03, calculating and fitting a DC voltage power characteristic curve of the converter station based on the voltage and power levels of the converter station under various typical operation conditions. The invention is applicable to the technical field of power system power transmission and distribution.

The invention discloses a reactive power regulation method for fans in a wind power farm under remote-control failure condition. The reactive power regulation method comprises a judgment mechanism of remote-control faliures, a conversion mechanism of a remote-control failure occurance trigger remote control mode and a one-machine mode, and a calling mechanism of a one-machine reactive power regulation mode, which are all triggered to be executed according to a certain time order in sequence, wherein the one-machine reactive power regulation mode is as follows: setting an active power-reactive power relationship curve of each fan in the wind power farm; and performing one-machine reactive power regulation according to change rules of the curve, wherein the curve is obtained by analyzing long-time operation record data of one fan in a whole regulation mode under a normal remote-control state. The reactive power regulation method has a good reactive power supporting capability in a remote-control failure state, and stablility of the bus voltage of the wind power farm under a remote-control failure condition can be guaranteed and a stable power grid is maintained.

The invention discloses a resource allocation method in a two-way relay cognitive radio system based on the DF protocol, which uses the capacity maximization feature of the DF protocol to obtain the power relationship between cognitive mobile users, base stations and each relay; and then Using this relationship and the power constraints used by cognitive mobile users to transmit signals to the relay, and the power constraints used by the base station to transmit signals to the relay, the two-way relay cognitive radio system is obtained when transmitting signals through each relay SNR, and then find a set of SNR combinations by permuting and combining all SNRs, the sum of all SNRs is the largest under the condition of meeting the interference limit, and then according to all the SNR combinations found The sum of the signal-to-noise ratio is used to obtain the maximum system capacity and the power used for the corresponding relay and relay broadcast signals; the advantage is that the system capacity is improved, and only the power used for each relay broadcast signal can be solved, simplifying The power solution process is simplified and the complexity is reduced.