180 results about "Unit distance" patented technology

A system and method for calculating and assessing earned insurance premium for a mileage based insurance contract is disclosed. The system includes charging a customer a policy premium for a policy period of an insurance contract defined in part by coverage for a preselected number of units distance from the inception of the contract, determining the number units distance lapsed since contract inception, and assessing an earned premium against the charged policy premium based on the ratio of units distance lapsed to units distance insured under the policy.

Methods and systems for determining a safest transportation route include determining a risk value for each of a set of candidate routes between an origin and a destination based on one or more safety factors or criteria, and comparing the risk values to determine the safest route. The risk values may be based upon default or selected safety factors, and may correspond to a normalized cost per unit distance. Safety factors may be derived from map data, obtained from user input and/or derived from other statistical data. User preferences and priorities may be included in the process for determining a safest route. Determined safest routes may be displayed, and may indicate especially risky portions of the determined safest route.

A hybrid vehicle control ECU calculates an estimated EV travelable distance based on a minimum travel cost and a usable charge amount of a battery, when a next external charge point, at which an external power source is available for charging, is set. The minimum travel cost indicates a minimum value of electric power amount consumed by a battery when a vehicle travels a unit distance. If the estimated EV travelable distance is longer, electric motor travel is selected estimating that it is possible to reach the next external charge point. If a remaining distance is longer and a present SOC is higher than a usable SOC lower limit, hybrid travel is selected. If the present SOC is lower than the usable SOC lower limit, a constant SOC travel is selected.

A method of assessing, pricing, and provisioning distance-based vehicle insurance is disclosed. The method includes receiving a vehicle identification number of a vehicle to be insured from a customer, receiving an preliminary odometer reading of the vehicle to be insured from the customer, and obtaining from the customer a legally binding declaration that the preliminary odometer reading is true and accurate. The method includes insuring the vehicle during a policy period defined by coverage for a preselected number of units distance from the preliminary odometer reading.

A taking lens device has a zoom lens system that is comprised of a plurality of lens units and that achieves zooming by varying the unit-to-unit distances and an image sensor that converts an optical image formed by the zoom lens system into an electric signal. The zoom lens system is comprised of, from the object side, a first lens unit having a positive optical power, a second lens unit having a negative optical power, a third lens unit having a positive optical power, and a fourth lens unit having a negative optical power. The following conditional formula is fulfilled: 1.1<f1/fT<2.5, where f1 represents the focal length of the first lens unit, and fT represents the focal length of the entire optical system at the telephoto end.

A system for measuring energy efficiency in a vehicle includes means for measuring instantaneous consumption of stored energy in the vehicle, means for measuring the change of the sum of potential and kinetic energy over time, a processor and an application. The application includes computer-implemented instructions for calculating the energy efficiency of the vehicle with the processor by calculating total energy used per unit distance traveled. The total energy includes potential energy, kinetic energy and stored energy. The total energy is calculated based on the measured instantaneous stored energy consumption and the measured change of the sum of potential and kinetic energy over time. The system optionally provides data to a cruise control, autopilot or other system to automate optimization of the vehicle's speed, acceleration and deceleration.

The invention relates to a rainfall distribution and dynamic measurement method based on a big-data mobile communication network. The method comprises the following steps: (1) constructing a central server which is connected with a mobile terminal base station and establishing a data communication link among mobile terminals, base stations and the central server; (2) collecting transmitting power of the base stations and power, received by the base stations, of corresponding mobile terminals in real time; (3) establishing one-to-one correspondence relationships between the mobile terminals and some base stations and calculating the path attenuation of the communication link between each mobile terminal and the base station; (4) by taking the transmitting power of the base stations as a reference, calculating attenuation of signals of the mobile terminals caused by non-meteorological factors such as free space propagation loss, buildings, vegetation, unset obstacles and the like; obtaining rain-induced attenuation values of mobile terminal signals in unit distance; establishing correlative relationships between the signal attenuation characteristic of the mobile terminals and rainfall intensity distribution; carrying out fusion analysis with professional meteorological data such as a rain gauge, weather radar and the like to obtain areal distribution of rainfall and dynamic changes of rainfall.

When a vehicle passes through an intersection that is stored in a collection target intersection database and for which direction-specific probe information is collected, a CPU of a navigation device generates a plurality of direction-specific probe information (entry link, exit link, section travel time, and the like) from a plurality of unit distance section information that is collected within a direction-specific traffic information acquisition section until the vehicle passes through the intersection, an entry link traveled before entering the intersection; and an exit link traveled after passing through the intersection, and transmits these to an information distribution center.

The invention discloses a vessel main engine energy-saving rotation speed measuring and selecting method, which comprises the following steps that: a vessel begins sailing from the lowest rotation speed in a main engine rotation speed range, and oil consumption in a unit distance is calculated according to a sailing distance and oil consumption of the vessel; the vessel sails increasingly in the main engine rotation speed range, and rotation speeds are recorded in turn; when the vessel sails a cycle in the main engine rotation speed range, the oil consumption in the unit distance and corresponding route speeds in the full main engine rotation speed range are acquired; and the main engine rotation speed which is greater than the slowest route speed and corresponds to the lowest oil consumption in the unit distance is selected from all the data for sailing. The invention also discloses a marine main engine energy-saving rotation speed measuring and selecting system, which comprises an oil inlet pipe flowmeter, an oil return pipe flowmeter, and an oil consumption integrating meter which is electrically connected with the oil inlet pipe flowmeter and the oil return pipe flowmeter; and the oil consumption integrating meter is also electrically connected with a speed measuring device. The method and the system greatly save the oil consumption and have obvious effects.

A transmission line system, a device for fault protection and computer programs, and a method for locating a fault in a series-compensated two-terminal power transmission line including a compensating bank for providing series-compensation to the transmission line. Different subroutines are utilized for locating faults on line segments from the first terminal to the compensating bank and line segments from the second terminal to the compensating bank. A selection is then made in order to determine a valid result. The subroutines utilize three phase currents synchronized measurements from both terminals and a three phase voltage measurements from one terminal for determining the respective per unit distance to a fault.

The invention discloses a height and area measurement method based on a monocular camera three-dimensional distance measurement model. The height and area measurement method comprises the following steps: obtaining the focal length of a camera through monocular camera calibration, wherein the unit of the obtained focal length is the number of pixel points on a unit distance and is in proportion to the imaging size of a CCD plate; modeling the monocular camera three-dimensional distance measurement model and calculating the distance between an object and the camera according to the modeled model; further realizing height and area measurement of the object according to the calculated distance through the model. The height and area measurement method based on the monocular camera three-dimensional distance measurement model requires less priori knowledge and does not need the troublesome process of requiring feature point matching of binocular distance measurement. On the other hand, the height and area measurement method is excellent in instantaneity, and when the 3-mega-pixel camera is adopted and the distance measurement range is within 50 m, the error rate is basically controlled within 5%. After accurately acquiring the angle of depression and focal length of the camera as well as other priori knowledge, the height and area measurement method can be completely applicable to the application fields of highway front obstacle detection and basic identification.

A camera distance measurement device displays an image in which a plurality of graduation lines which are arranged in the form of a grid with respect to a vehicle is superimposed on a camera image which is captured by a camera mounted to the vehicle on a display unit, and estimates a distance in a direction of the width of the vehicle, and a distance in a direction of the capturing by the camera from a unit distance defined for each grid side of the graduation lines.

The invention relates to a speech enhancement method of a microphone array under a non-stationary noise environment. The probability of an effective signal is accurately judged by means of phase information between passageways in order to improve non-stationary noise environment interference resistant performance. The method which estimates the probability of the effective signal specifically comprises the following steps: (51) according to a required beam width, calculating a threshold T1=NL sin (theta)/Fs, wherein N represents frame length, L represents microphone unit distance, theta represents beam width, and Fs represents sample frequency, (52) calculating the valve of the sum of phase differences omega of input signals of all passageways on all frequency points pd (n, omega); and (53) when the pd (n, omega)>omega (M-1) T1, the effective signal probability exists on the frequency point p1 (n, omega)=1, otherwise, p1 (n, omega)=0, wherein M represents the number of microphones. Due to the fact that the phase information between the passageways is used, judgment to the probability of the effective signal is enabled to be more accurate, the signal to noise ratio of picked up voice is improved, whole performance is improved, and particularly non-stationary noise environment interference resistant performance is improved.

The invention relates to a camera calibration method and a camera calibration device. The method comprises the following steps: making a camera move to above a graphic mark at a fixed position; acquiring an image of the graphic mark taken by the camera; acquiring the center point coordinates of the image and the graphic mark therein; calculating the coordinate differences between the center point coordinates of the image and the graphic mark therein on the X axis and on the Y axis respectively; multiplying the X-axis and Y-axis coordinate differences by preset X-axis and Y-axis unit distances to get the moving distances of the X and Y mechanical shafts respectively; making the X and Y mechanical shafts move to move the camera corresponding distances on the X axis and on the Y axis respectively; acquiring an image of the graphic mark taken by the camera again; detecting whether the absolute values of the coordinate differences between the center point coordinates of the image taken again and the center point coordinates of the graphic mark in the image are less than a preset threshold; and if the absolute values are less than the preset threshold, updating the X-axis and Y-axis unit distances, and going to the step of calculating the moving distances. Automatic camera calibration is realized, and the accuracy of calibration is improved.

The invention relates to a touch panel and a position detection method for the touch panel. The touch panel includes a substrate and a single-layer circuit layout formed on the substrate. The single-layer circuit layout includes a plurality of conductive lines, and each conductive line has a resistance value that gradually changes with the distance from one end thereof. The position detection method is used to detect a contact position of a contact object on a touch panel equipped with multiple conductive lines, and the parts of the conductive lines arranged at the position detection positions are arranged at intervals in a first dimension direction, along a first dimension. The two-dimensional directions extend in parallel, and the unit resistance value of the conductive lines extending in parallel along the second dimensional direction changes with the distance from one end of the conductive lines. The method includes: calculating the resistance and capacitance of each conductive line The sum of the products, and the second dimension direction coordinate value of the contact position is judged according to the calculated sum. The present invention has the advantage of lower cost through simple wiring, and can use one-dimensional wiring detection lines to achieve two-dimensional position positioning, which is very practical.

The invention relates to a novel polarization criteria realization method in non-unit distance protection, and the method comprises the steps of determining a phase of a fault point voltage in non-unit distance protection; determining delta U' according to a compensation voltage; determining a non-unit range finding result that is not influenced by a load component; and determining if the fault occurs inside or outside the range based on the non-unit range finding result. The position determination speed is raised, the accuracy is improved, and the precision of non-unit distance protection is improved.

In wire electric discharge machining performed with a wire electrode moved relative to a workpiece based on a desired shape, a command speed is controlled so that the discharge densities per unit distance in circular-arc and straight portions of the desired shape are equal, in consideration of the difference in arc length between a circular-arc portion in a desired shape and the corresponding portion of a machining path, whereby the shape accuracy of the circular-arc portion is improved.