18results about "Average speed measurement" patented technology

The invention relates to a method for monitoring the operation of a magnetic piston pump (1) in which a piston (2) performs an electromagnetically driven stroke movement with a start and end point, wherein the stroke movement is initiated by a magnetic armature (3) arranged on the piston (2) by means of an electromagnetic field generated by energizing at least one coil (4) with a coil current, wherein the energizing has a switch-on time and a switch-off time, wherein the start (ta) and / or the end (teA, teB, teC) of the stroke movement is determined by the following steps: - measuring and recording the actual coil current; - calculating and recording a difference (la; le) between a stored coil current and the actual coil current starting from the switch-on time of the energizing over a defined period;- Evaluation of this difference to determine the start (ta) and / or end (teA, teB, teC) of the electromagnetically driven lifting motion.;

The utility model discloses an average speed and deceleration measuring system of an agricultural machine, particularly relates to the technical field of mechanical testing, and aims to solve the problems that the real-time speed and deceleration of the agricultural machine in the prior art need to be manually operated, and are tedious, low in accuracy and the like. The top of each portal frame is provided with an LED screen, a photoelectric switch and a signal lamp. An operation pavilion is arranged on one side of the test runway, an industrial personal computer is arranged in the measurement pavilion and provided with an upper computer module, a satellite navigation system is arranged on the agricultural machine, and the industrial personal computer is in signal connection with the satellite navigation system, the LED screen, the photoelectric switch and the signal lamp. And the industrial personal computer can control the display of the LED screen and the color switching of the signal lamp according to the monitoring signal of the photoelectric switch. According to the utility model, the measurement precision of the agricultural machinery speed test can be improved, the working intensity of operators is reduced, and the operation process is automatic, intelligent and informationized.

To provide a speed calculation device that can accurately calculate speed corresponding to the movement of an electronic device.SOLUTION: A speed calculation device 100 according to the present disclosure comprises a sensor information acquisition unit 111, a speed estimation unit 112, an average speed calculation unit 113, a relationship information calculation unit 114, and a speed-determining unit 115. The sensor information acquisition unit 111 acquires, from an acceleration sensor, sensor information relating to acceleration regarding an electronic device. The speed estimation unit 112 calculates, on the basis of the sensor information, an estimated speed estimated with respect to the movement of the electronic device. The average speed calculation unit 113 performs filtering and integration on the sensor information and calculates an average speed corresponding to the movement of the electronic device. The relationship information calculation unit 114 calculates relationship information indicating the correspondence relationship between the estimated speed and the average speed. The speed-determining unit 115 determines the speed corresponding to the current movement of the electronic device on the basis of the relationship information and the current estimated speed calculated by the speed estimation unit.SELECTED DRAWING: Figure 3

The present invention relates to a tachymeter device for indicating an average speed of a moving object, said tachymeter device being attachable to a housing of a wristwatch (1), and comprising a timer and an activator (2) 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, a scale (4) for indicating an average speed of the moving object and a hand (5) for indicating a measured average speed on the scale (4), wherein the measured average speed is derived from said defined distance and a time to cover said defined distance measured by the timer, and wherein the hand (5) is configured to make one revolution around the dial of the wristwatch within less than sixty seconds, advantageously within exactly thirty seconds or within exactly ten seconds.

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.

A tachymeter device for indicating the average speed of a moving object and a watch equipped with such a tachymeter device comprise a timer and an activator for manually starting the timer when the object passes a start mark and stopping the timer when the object passes a predefined distance from the start mark. They comprise a housing, a scale for indicating the average speed of the moving object and a pointer for indicating on the scale a measured average speed, the measured average speed being derived from said predefined distance and the time covering said predefined distance measured by the timer. The scale is designed as a scale part removably arranged on the housing. The scale part is selected from a set of scale parts including a plurality of different scale parts each having a scale with a speed indication for indicating a speed range corresponding to a different predefined distance.

The present disclosure relates to a speed prediction device and method thereof. The speed prediction device according to this embodiment may include: a selection circuit for selecting a predicted section of a road for which a vehicle's speed is to be predicted, and a subsequent section located behind the predicted section in terms of the vehicle's traveling direction; a receiving circuit for receiving driving information including the speed of a vehicle passing through the predicted section and the subsequent section; a processing circuit for generating processed information including an average speed, the average speed being obtained by sequentially weighting the predicted section and the subsequent section in order of relative distance from the predicted section and calculating an average using the weights and the driving information; and a generation circuit for generating a predicted speed by inputting the processed information into a prediction model trained to predict the future speed of the vehicle.

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.

The invention relates to fragment speed and position measurement, in particular to a target plate structure capable of simultaneously obtaining fragment speed and position. The invention provides a novel sandwich target plate structure integrating a comb-shaped structure and a high-conductivity copper-clad plate structure, the top layer of the target plate is a comb-shaped electrode array, the middle layer of the target plate is an insulating layer, and the bottom layer of the target plate is continuous metal copper foil with equal thickness. A negative electrode detection line is led out from the negative electrode on the top layer, and four signal detection lines are led out from the four corners of the copper foil on the bottom layer respectively. When a fragment hits the target plate, the specific position of the fragment hitting the target plate can be determined according to four resistance values by accurately measuring the resistance change between the negative electrode detection line at the top layer and each signal detection line at the bottom layer. In addition, the speed of the fragments is obtained by detecting the time difference between the time when the fragments penetrate through the target surface and the blasting center of the starting point and combining the distance between the target plate and the blasting center. The comb-shaped target with the sandwich type structure is low in manufacturing cost and mature in processing technology, and large-scale production is easy to achieve.

The present invention relates to a method for determining a standardized speed of a soft mobility vehicle on at least one portion of a transport network, said transport network comprising a plurality of interconnected strands, with the following steps: a) Geolocated instantaneous speeds of a plurality of soft mobility trips of a plurality of users within said portion of the transport network are acquired; b) For each strand of said portion of the transport network, an intermediate speed model is constructed for each user having traveled said strand by means of said acquired geolocated instantaneous speeds, said intermediate speed model determining an intermediate speed for each strand for each user;(c) For each strand of said portion of transport network, a normalized speed model is constructed as the average of intermediate speeds, the normalized speed model determining a normalized speed for each strand for all users; and (d) said normalized speed is determined for each strand of said portion of transport network by minimizing a cost function which depends on a difference between an intermediate speed determined by said intermediate speed model and a normalized speed, and by applying said normalized speed model. Figure 1 to be published;

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.

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.

A method and apparatus are provided that implement or use a technique for estimating wind speed and include a computer program product. Measurements are obtained that indicate two or more trajectories through which a flying ball passes. A wind speed estimate for each of the two or more trajectories is determined, the determination including comparing a modeled acceleration of the ball to an observed acceleration of the ball derived from the measurements. An aggregated wind speed estimate is calculated as a weighted average of the determined wind speed estimates for the two or more. The aggregated wind speed estimate is used to generate ball trajectory information presented to an output device.

A computer-implemented method comprising the steps of: obtaining (600) an image timestamp indicating a time of acquisition, by a traffic control unit, of an image showing a license plate of a vehicle, the image timestamp having been indicated by a clock of the traffic control unit; obtaining (602) time synchronization data, said time synchronization data having been received by the traffic control unit during a predefined time interval including the image timestamp for time synchronizing the clock of the traffic control unit with a time server; and testing (604) the image timestamp for consistency with the time synchronization data, the consistency test producing a test result indicating that the image timestamp is valid or invalid.

A speed prediction device may comprise: a selection circuit selecting a prediction section of a road for which to predict the speed of a vehicle and rear sections located behind the prediction section in a traveling direction of the vehicle; a receiving circuit receiving driving information including the speeds of vehicles passing the prediction section and the rear sections; a processing circuit generating processing information including an average speed obtained by sequentially weighting the prediction section and rear sections in order of relative distance from the prediction section and calculating an average using the weights and the driving information; and a generating circuit generating a predicted speed by inputting the processing information to a prediction model trained to predict a future speed of a vehicle.

A method and apparatus are provided that implement or use a technique for estimating wind speed and include a computer program product. Measurements are obtained that indicate two or more trajectories through which a flying ball passes. A wind speed estimate for each of the two or more trajectories is determined, the determination including comparing a modeled acceleration of the ball to an observed acceleration of the ball derived from the measurements. An aggregated wind speed estimate is calculated as a weighted average of the determined wind speed estimates for the two or more. The aggregated wind speed estimate is used to generate ball trajectory information presented to an output device.