5results about "Average speed measurement" patented technology

The application provides a water flow measurement method and device, a measurement equipment and a computer readable storage medium. The method comprises the following steps: controlling the measurement equipment to travel from a measurement starting point to a measurement ending point, wherein the measurement starting point and the measurement ending point are located on two sides of a water flow to be measured; collecting a flow rate of a section of the water flow to be measured during the travel of the measurement equipment; and determining the flow rate of the water flow to be measured according to the flow rate.

The invention discloses a device for multi-parameter testing of a composite damage field, and belongs to the field of explosion mechanics and damage effect evaluation. The system comprises a flexible multifunctional composite sensing module, a distributed signal acquisition and processing module and a data analysis module. The multifunctional composite sensing module comprises a high-temperature-resistant protection layer, a temperature field test module, a shock wave pressure test module and a fragment parameter test module. The whole multifunctional composite sensing module is of a complex curved surface flexible multilayer structure attached to a tested object. The thin film thermocouple array is used for preparing a micro thermocouple node array on the flexible substrate by adopting a micromachining method; the distributed signal acquisition and processing module is used for synchronously acquiring and preprocessing signals of the test sensing layer; and the data analysis module receives the original or preprocessed data from the acquisition module, and performs data analysis and visualization. According to the invention, multiple parameters such as shock waves, fragments and temperature fields in an explosion field can be measured synchronously in situ, and the test precision and efficiency of multiple parameters of a composite damage field are improved.

A method for traffic monitoring and control in which mean traffic flow velocities vpi predicted by means of a route service are provided for respective route segments Si of a respective route running from a respective starting point to a respective destination point within a respective route corridor of a road network at a current time, wherein the central route service is provided and executed on a computing unit of a traffic monitoring and control system, wherein the route service a) at the current time captures a plurality of current route requests relating to the route corridor from a plurality of vehicles via a respective telecommunications connection to the vehicles, and receives traffic-relevant data available at the current time via a first telecommunications interface.and, using at least one routing algorithm, calculates a requested route for each of the plurality of vehicles based on the road network and the traffic-relevant data available at the current time; b) based on the calculated routes for future times of stay on respective route sections Si, determines how many of the plurality of vehicles will be on which route section Si, and derives a vehicle density per route section Si for the respective future times of stay.c) assigns a different weighting factor to the vehicle densities per route segment Si depending on the time interval between the respective dwell time and the current time, and converts the weighted vehicle densities for the respective dwell times on the respective specific route segments Si into predicted differently weighted mean traffic flow velocities vpi for the respective dwell times on the respective specific route segments Si, d) recalculates the respective routes for the recorded route requests using the calculated traffic flow velocities vpi, e) iterates steps b) to d) using the newly calculated routes iteratively until the traffic flow velocities vpi meet a predefined convergence criterion, whereby the convergence criterion is then met.if the traffic flow velocities vpi change from the last iteration by a maximum of a specified tolerance value from the respective traffic flow velocities calculated in the last iteration, and f) provides the iteratively calculated traffic flow velocities vpi for calculating a best route between the respective starting point and the respective destination point via a second telecommunications interface.

A tachymeter device for indicating an average speed of a moving object and a wristwatch comprising such a tachymeter device comprise a timer and an activator for manually starting the timer, when the object passes a starting mark, and stopping the timer, when the object passes a defined distance from the starting mark. They further comprise a housing, a scale for indicating an average speed of the moving object and a pointer for indicating a measured average speed on the scale, wherein the measured average speed is derived from said defined distance and a time to cover said defined distance measured by the timer. The scale is designed as a scale part that is arranged detachably at the housing. The scale part is selected from a set of scales parts comprising a plurality of differing scale parts each having a scale with speed indication for indicating speed ranges corresponding to differing pre-defined distances.