83results about How to "Accurate efficiency" patented technology

A method and a device for determining the efficiency of a dialyzer of a dialysis machine during a dialysis treatment wherein the dialyzer is divided by a semipermeable membrane into a blood chamber and a dialysis fluid chamber and wherein the blood flows at a predetermined flow rate through the blood chamber and dialysis fluid flows at a predetermined flow rate through the dialysis fluid chamber. In use, the dialysance or clearance for a predetermined dialysis fluid flow rate and/or blood flow rate is measured, and then the dialysance or clearance for any dialysis fluid flow rate and blood flow rate is calculated.

In a control method and control device for an engine, in order to prevent torque control precision from deteriorating while performing an ignition retard control in a variable valve engine, when a torque down control is carried out by using the ignition retard, combustion duration is calculated in consideration of valve timing or an engine rpm for each driving state, and a characteristic of a reference ignition timing efficiency curve is corrected on the basis of a difference between the combustion duration and a combustion duration reference value which is set in advance.

The present invention provides a semiconductor light-emitting element comprising an electrode part excellent in ohmic contact and capable of emitting light from the whole surface. An electrode layer placed on the light-extraction side comprises a metal part and plural openings. The metal part is so continuous that any pair of point-positions in the part is continuously connected without breaks, and the metal part in 95% or more of the whole area continues linearly without breaks by the openings in a straight distance of not more than ⅓ of the wavelength of light emitted from an active layer. The average opening diameter is of 10 nm to ⅓ of the wavelength of emitted light. The electrode layer has a thickness of 10 nm to 200 nm, and is in good ohmic contact with a semiconductor layer.

An online monitoring method and device for a fossil fuel converter apparatus. The method monitors fuel compositions in real time by measuring operating data of the converter apparatus and comprises the following steps: determining reactant compositions and number of variables thereof; determining fuel compositions and number of variables thereof; determining compositions of incomplete products and number of variables thereof; determining relationship between the fuel compositions and calorific value; establishing an equation set involving the fuel compositions, the reactant compositions and the resultants compositions, according to energy balance relationship and material balance relationship in the combustion process; providing given conditions for independent relationships concerning variables in the above equation set; measuring boiler operating data and assigning the variables in the above equation set; and finding the solution to the equation set and obtaining real-time monitoring data of the converter apparatus.

The invention provides a device, a system and a method for monitoring the efficiency of a hydro-electric generating set. The device comprises a digital signal processor (DSP) main control chip module, a hydraulic turbine by-pass flow measurement module, a generator active power measurement module, a set working head measurement module and a human-machine interaction module, wherein the DSP main control chip module is used for controlling the measurement operation of the hydraulic turbine by-pass flow measurement module, the generator active power measurement module and the set working head measurement module, controlling the human-machine interaction module and performing operation processing on data acquired by measurement to acquire a result which reflects the efficiency characteristic of the hydro-electric generating set through computation. Therefore, the device for monitoring the efficiency of the hydro-electric generating set has high-speed and accurate capabilities of acquiring, analyzing, processing and transmitting the data and can be used for relatively accurately measuring the by-pass flow of a hydraulic turbine, the active power of a generator and the working head of aset, so that the efficiencies of the hydro-electric generating set and the hydraulic turbine can be accurately computed.

The present invention provides one kind of reorganizing and outfitting operation method and safety system for locomotive warehouse. The reorganizing and outfitting operation method includes the following steps: 1. writing number information of the railway in the sorting yard into radio RF card; 2. embedding the written cards in corresponding railways; 3. installing the card reader for receiving the signal from the RF cards on the locomotive and correlating with the locomotive locating system; 4. the host computer of the locomotive locating system sending the relevant information to the station dispatching center; 5. displaying the dynamic locomotive information in the station dispatching center while issuing command to the locomotive; and 6. the locomotive receiving the command information and running based on the command. The present invention is effective and accurate.

A method for calibrating the calculation of a laser power measurement with respect to specified operational and/or environmental parameters in an optoelectronic device, such as an optical transceiver module having a laser diode, is disclosed. In particular, the method includes sensing analog data that relates to light emission from the laser diode using a monitor photodiode disposed in the optical transceiver module. Additional sensors are then used to sense analog data that relates to the temperature and voltage of the monitor photodiode. The analog data is converted into digital data, then a formulaic relationship that relates the light emission data to the temperature and voltage data is used to calculate the laser power of the laser diode. Calibration by this method accounts for unintended effects caused by temperature and voltage fluctuations in the optical transceiver module.

A system for flexible and scalable automated end-to-end chat-based contact center testing, having a test case management platform, a chat cruncher, a contact center manager, a chat classifier, a desktop automation engine, and headless browser-based virtual agents and customers. The test case management platform allows a user to configure operation of the system. The chat cruncher operates a plurality of virtual customers. The contact center manager operates a plurality of virtual agents to participate in chat session with virtual customers.

A solar reflection apparatus (60) is disclosed comprising a rotatable reflection (assembly 20) and a drive mechanism (12) which is operable to drive rotation of the reflection assembly (20) at its axis of rotation. The reflection assembly (20) comprises a curved linear reflector (4) defining a focal axis F, a counter weight (17) operable to balance the self weight of the reflector (4), and a support structure (15) via which the reflector (4) and counter weight (17) are rotatably mounted at locations along the focal axis F of the reflector (4). A solar collection apparatus (2) is also disclosed comprising a solar reflection (apparatus 60) as disclosed above and a heat collecting element (6), fixedly mounted along the focal axis F of the reflector (4). Also disclosed is a method of reflecting solar radiation comprising forming a reflection assembly (20), mounting the reflection assembly (20) for rotation about the focal axis F of the reflector (4) and driving rotation of the reflection assembly (20) at its axis of rotation. The reflection assembly (20) comprises a linear curved reflector (4) that defines the focal axis F, a counter weight (17) operable substantially to balance the self weight of the reflector (4), and a support structure (15).

The herein method for adjusting the source activation time of a heating or cooling source is based upon variation in temperature sensor or thermostatic means activity within a controlled environment, and involves activating and deactivating the heating or cooling source to provide precise heating or cooling BTU replacement. This method changes the priority of heating and cooling management from a fixed source output, which is called upon by a controlled environment thermostat, to a system of adjusting the source output to the precise delivery of source output to the needs of the enclosed environment at an ideal thermostat demand ratio within the controlled environment.

The invention employs a group of LED devices as a light source for emitting light with different wavelengths towards the solar cell under test. A set of test signal data composed of mutually orthogonal test signals are used to power the LED devices to emit light. The solar cell, upon receiving light from the LED devices powered by the test signal data, generates detected values which are in turn converted into electric signals. A processor device is then used to separate component signals contributed by the respective LED devices from the signals and compare the component signals to the output power level corresponding to the test signal data and/or to the optical energy levels radiated from the respective LED devices, thereby obtaining the spectral response of the solar cell to the different wavelengths of light.

A printer comprising: a sheet media transport mechanism for transporting sheet media past a printhead; a pick-up roller arranged to be rotated so as to contact and pick-up sheet media from a supply of sheet media and deliver the picked sheet media to the sheet media transport mechanism; and a gear assembly for communicating a driving force of a motor to the pick-up roller so as to rotate the pick-up roller, wherein a first gear of the gear assembly is arranged to disengage from a second gear of the gear assembly substantially at the point of delivery of a leading edge of the picked sheet media to the sheet media transport mechanism so as to cease communication of the driving force of the motor to the pick-up roller.

A method of registering virtual equipment for a virtual production system includes generating a production system model and a production process model of a virtual factory on the basis of a structure database (DB), a production DB, and an operation DB, extracting a plurality of equipment behavior catalogs (EBCs) regarding a plurality of pieces of virtual equipment used in the virtual factory from an EBC repository on the basis of the production system model, generating and simulating a plurality of equipment processing models on the basis of the plurality of EBCs and the production process model, and generating an EBC set on the basis of the plurality of EBCs when a result of the simulation satisfies a predetermined criterion.

A method and system for processing of telephonic voice over a data network, such as the Internet, which includes a signaling protocol with little overhead and allows for dynamic connections to a host. The system uses a signaling protocol which creates an ad hoc connection to the host which reduces the per packet information necessary to conduct the communication. The system provides for quick and efficient establishment of communications from multiple remote locations to a central host. Each remote location may only connect to the host or a redundant host.

A method of more accurately measuring steam turbine efficiency is disclosed in which the sealing steam in the steam turbine is re-routed so that a more accurate measure of steam turbine efficiency can be made. Some of the steam entering a turbine goes into the turbine's end pack and then mixes with the steam that goes through the turbine. Piping is added from one of the end pack line's to the condenser. This added line has a valve, pressure, temperature and flow measuring devices. As the valve is opened, the amount of flow going to the end pack line allowing the end pack steam mix with the steam that goes through the turbine is reduced. As the flow in this line is reduced the measured temperature at the turbine exhaust will also decrease. The amount that the valve is opened is increased until either the exhaust temperature has reached a minimum, or the enthalpy in the pipe changes from the initial enthalpy.

The invention relates to a self-adaptive learning method based on learning efficiency and a computer system, the learning method comprises the following steps: collecting user behavior data, the userbehavior data comprising pre-test phase data and learning phase data; analyzing the user behavior data to obtain an analysis result, wherein the analysis result comprises a pre-testing stage capability value, a learning stage capability value and learning stage time cost; based on the analysis result, obtaining learning efficiency values of all the users for all the knowledge points; and pushing learning suggestion information based on the learning efficiency value. Compared with the prior art, the method has the advantages of good user experience, improved learning efficiency and the like.

The present invention discloses an actually measured data based calculation method for a time-varying failure rate of a relay protection apparatus. The method comprises: acquiring historical failure data of the relay protection apparatus, and according to a predetermined basis of determination, screening out random failure data and ageing failure data from the historical failure data; estimating a random failure rate lambda 0 on the random failure data by adopting an estimation method for a constant failure rate; with respect to the aging failure data, performing distribution calculation on the aging failure data by using a mathematical expectation formula as an empirical distribution function, and performing fitting calculation on a distribution calculation result to obtain a failure probabilistic distribution function of the relay protection apparatus so as to calculate an aging failure rate lambda 1(t); and according to the random failure rate lambda 0 and the ageing failure rate lambda 1(t), estimating the time-varying failure rate of the relay protection apparatus. The method provided by the present invention can be applied to the time-varying failure property study based on the failure data of the protection apparatus in a station, so that the calculation of the failure rate better meets an actual condition, and the failure state of the apparatus can be predicted according to a calculation result.

A pair of gardening shears comprises: a first shear element having a cutting blade portion at one end, a combining portion at the opposite end comprising a pivot hole and a shear element combining hole, and a first handle further attached to the first shear element; a second shear element having an anvil blade portion at one end, and a combining portion at the opposite end comprising a pivot hole and a shear element combining hole as well as a handle shaft combining hole a handle shaft axially positioned within a second handle; a pivot member, a shear element combining pin; and a shear element pivot shaft.

The invention relates to the technical field of garbage treatment, in particular to a black soldier fly larva screening device for treating kitchen garbage. According to the technical scheme, the black soldier fly larva screening device for treating the kitchen garbage comprises a hollow shell, and a separation part is arranged in the shell; the shell is divided into a feeding cavity and a transition cavity by the separation part, and the separation part is provided with a plurality of channels for black soldier fly larvae to pass through; the feeding cavity is provided with a feeding port capable of being opened and closed; the transition cavity is provided with an air inlet and an air outlet, and the air outlet is used for being connected with a negative pressure fan; and the transitioncavity is further connected with an insect storage cavity, the upper end of the insect storage cavity is communicated with the lower end of the transition cavity, the air outlet is located above the insect storage cavity, and an insect taking door is arranged at the bottom of the insect storage cavity. According to the black soldier fly larva screening device, hatched larvae and hatched bases canbe rapidly separated, it is guaranteed that when the black soldier fly larvae are thrown into the kitchen garbage, accurate metering is achieved, the larva screening efficiency is improved, and then the treatment efficiency of the kitchen garbage is guaranteed.