182 results about "Change factor" patented technology

The invention discloses an energy-saving real-time dynamic route planning method applicable to an intelligent networked automobile. The energy-saving real-time dynamic route planning method specifically comprises the following steps: establishing a three-dimensional road network model considering time dimension; acquiring the state of signal lamps at the tail end of each road section; searching all feasible routes in a road network by virtue of a full-feasible path search algorithm according to a starting point and a destination; according to traffic flow information, computing the shortest transit time and calculating the theoretical transit time on the road section; recommending a route with the shortest transit time as a real-time dynamic route; and considering an automobile potion change factor during the driving of an automobile, re-invoking a dynamic route planning algorithm while entering an effective range of the tail end of the road section, and further updating the optimal real-time dynamic route of the current automobile. The energy-saving real-time dynamic route planning method has the advantages that a trip route with the shortest full-process theoretical transit time in a three-dimensional space-time network can be searched; and the driving energy consumption of the automobile can be remarkably reduced, and the aim of energy-saving tripping is achieved.

The invention discloses a control system for a lithium ion battery of an electric car. The system achieves the safety control of the battery through precise estimation and feedback of the residual electric quantity of the battery, collects a discharging current, an output voltage and the temperature of the battery, carries out the filtering and noise reduction through a filter, and builds a mathematic relation between the residual capacity of the battery and the output current of the battery based on an ampere-hour method and a Proctor empirical formula. The system gives consideration to the temperature factor and a nonlinear change factor of the initial capacity of the battery, carries out the correction and compensation of the Kalman method, and reduces the estimation error of the residual capacity of the battery. The system employs an open-circuit voltage method and the Kalman filtering method for prediction and comparison, carries out the compensation of a gain matrix, obtains the nearly real initial capacity of the battery, and enables the prediction and estimation error to be smaller. Meanwhile, the system gives consideration to the impact on the residual capacity of the battery from the temperature, corrects the mathematic model of the ampere-hour method through the corrected parameters K and n, and further reduces the estimation error.

The invention discloses a sensor for detecting ultra-low concentration gas. The sensor detects analyzed gas under the conditions of constant pressure, constant flow, constant humidity, constant temperature and being free from influence of interfering gas, which maximally eliminates interference of change factors such as gas flow, pressure, humidity, temperature, gas composition and the like, improves signal-to-noise ratio of the sensor, and reaches detection limit and precision of 1-10ppb. The sensor comprises a gas filter, a constant-flow and constant-pressure device, a constant-humidity andconstant-temperature device and a detector, wherein, the gas filter is used for reducing particles and the interfering gas which generates ppb-order or greater signal interference on a detection signal of detected gas carried in a gas sample; the constant-flow and constant-pressure device is connected to the gas filter and controls flow velocity and pressure of the filtered gas; the constant-humidity and constant-temperature device is connected to the constant-flow and constant-pressure device, controls the humidity at a constant state for the detection signal of the detected gas or eliminates influence of the humidity through zero-point correction, and controls the temperature of the gas; and the detector is placed in the constant-humidity and constant-temperature device and is used for detecting the gas.