137 results about "Data acquisition" patented technology

There is provided a system and method for operating at least one electronic parcel compartment facility. The parcel compartment facility comprises several compartments in a number amounting to F, with which mailpieces of at least two user groups A and B having different access rights can be deposited into the compartments of the parcel compartment facility, whereby the parcel compartment facility is in communication with a central data processing unit. The occupation status of the compartments of the parcel compartment facility is transmitted to the data processing unit so that the number Y of different sizes of free compartments of the parcel compartment facility is stored in a memory of the data processing unit. The central data processing unit is also in communication with at least one mail distribution center where destination information about the mailpieces is acquired, whereby the destination information is associated with the parcel compartment facility. An exemplary method comprises specifying a period of time Z between a starting point in time and an ending point in time and storing the period of time Z in a data processing unit of the mail distribution center. The exemplary method also comprises acquiring destination information and sizes of the mailpieces in the mail distribution center using a data acquisition device. The exemplary method additionally comprises determining the X number of mailpieces whose destination information acquired during the period of time Z matches the destination information of the parcel compartment facility by the data processing unit of the mail distribution center and transmitting the number X by the data processing unit of the mail distribution center to the central data processing unit. The exemplary method further comprises comparing the number X to the number Y of free compartments and assigning X free compartments of the parcel compartment facility to a first user group A by the central data processing unit if Y≧X. The exemplary method also comprises transmitting a control command for the reservation of the X free compartments of the parcel compartment facility assigned to the first user group A by the data processing unit to a control unit of the parcel compartment facility, and subtracting the number X of reserved compartments from the number Y of free compartments for purposes of determining the number V of available compartments remaining in the parcel compartment facility. The exemplary method additionally comprises assigning at least some of the remaining available compartments V to a second user group B, if V>1 and transmitting a control command for a reservation of the compartments assigned to the second user group B from the data processing unit to the control unit of the parcel compartment facility. The exemplary method further comprises acquiring user identifications and / or mailing information through a user interface at the parcel compartment facility and associating a user and / or a mailpiece with the user groups A or B on the basis of the acquired user information and / or mailing information. The exemplary method also comprises controlling access to free compartments of the parcel compartment facility on the basis of the reservations made for the two user groups A and B and determining a point in time P by the control unit of the parcel compartment facility. The exemplary method additionally comprises canceling the reservations of compartments for the user groups A and B after the point in time P and releasing access to free compartments of the parcel compartment facility to all user groups.

The embodiment of the invention provides an Internet-of-things communication method and a cloud gateway. The method comprises the following steps: a data acquisition process: acquiring industrial datacollected by network equipment in a heterogeneous network; a protocol conversion process: analyzing the industrial data, and converting the industrial data with different communication protocols to OPC UA standard data, and then converting the industrial data to MQTT protocol data; a cloud transmission process: sending MQTT protocol data to cloud platform; a task scheduling process: triggering protocol conversion task generation after data acquisition process; triggering the generation of cloud transmission tasks after the protocol conversion process; storing the protocol conversion tasks andcloud transmission tasks in the task queue according to the generation time sequence, and triggering execution of the corresponding process by calling the non-blocking task scheduling function of thetasks in the task queue in turn. The embodiment of the invention realizes the communication transmission of the Internet-of-thigns in a non-blocking mode through a single gateway, and improves the real-time property of the communication of the Internet-of-things. Industrial data cloud services with different protocols are implemented.

A diagnostic imaging system in an example comprises a high frequency electromagnetic energy source, a detector, a data acquisition system (DAS), and a computer. The high frequency electromagnetic energy source emits a beam of high frequency electromagnetic energy toward an object to be imaged. The detector receives high frequency electromagnetic energy emitted by the high frequency electromagnetic energy source. The DAS is operably connected to the detector. The computer is operably connected to the DAS and programmed to employ a threshold to trigger a filter operation on a pixel, in a basis material decomposition (BMD) image of a plurality of BMD images, through comparison of an actual noise ratio between a pair of BMD images, of the plurality of BMD images, to a theoretical BMD noise ratio value. The computer operably connected to the DAS is programmed to employ a correlation in noise distribution of the plurality of BMD images to reduce image noise in the plurality of BMD images. The computer operably connected to the DAS is programmed to realize an adaptive algorithm through employment of an exponential correction function of a difference between the actual noise ratio and the theoretical BMD noise ratio value. The computer operably connected to the DAS is programmed to employ the adaptive algorithm to reduce the image noise in the plurality of BMD images.

The invention relates to a method for performing an expansion test of combined loads on a solid expansion pipe, which comprises the following steps of: 1) preparing a sample and an expansion cone; 2) expanding an end part; 3) preparing an expansion test; 4) performing the expansion test, wherein the expansion test can be any one of the following tests: a, a mechanical stretching expansion test; b, a hydraulic expansion test; and c, a mechanical hydraulic combined expansion test; and 5) performing data acquisition and data analysis. In the method, the mechanical stretching expansion test or the hydraulic expansion test or the combined expansion test of mechanical stretching and hydraulic pressure is realized, and the displacement, speed, stretching loads and hydraulic pressure of the expansion cone and the radial deformation data of the solid expansion pipe in the process of the expansion test can be measured in real time by using axial controlled mechanical stretching loads and the hydraulic pressure and matching the corresponding expansion conical head. The invention provides a method for the expansion test for simulating actual working conditions in laboratories effectively for the detection of expansion performance and study evaluation of the solid expansion pipe and the study and improvement of a connecting structure of the expansion pipe.

The invention relates to a ground water seepage coefficient testing device, belongs to the field of hydraulic engineering, and the IPC(international patent classification) number is E02B 1 / 00. The testing device provided by the invention comprises a operation control system, a water level sensor, a flow sensor, an on-line monitoring control device, a data acquisition system and a water pump for pumping water, wherein the water pump for pumping water is positioned under the water level sensor, and the flow sensor is connected with the water pump for pumping water through a system connection valve. In the testing process, the water pump for pumping water is started, and the groundwater on-line water level sensor and a water pump effluent water flow sensor 7 are started at the same time, then the data acquisition system automatically records water level and water flow in real time so as to obtain pumped water amount of the water pump and corresponding data on groundwater level drawdown, thereby calculating seepage coefficient and other hydrogeological parameters of a corresponding aquifer. The device disclosed by the invention is suitable for various ground water seepage coefficient tests, can accurately reflect the geohydrological conditions of the aquifer, thus improving the equipment level in the field of groundwater environment in China.

The invention relates to a monitoring method and a monitoring device for an abnormal state of metering equipment. The monitoring method comprises the steps of collecting operational data of the metering equipment for metering an automatic system; determining abnormal state information of the metering equipment according to the operational data; acquiring equipment information of the metering equipment, and generating an operation and maintenance work order according to the abnormal state information and the equipment information; sending the operation and maintenance work order to a client side; receiving an operation and maintenance state of the metering equipment fed back by the client side; monitoring the abnormal state of the metering equipment according to the operation and maintenance state, and monitoring the abnormal state of the metering equipment by combining the operational data, the operation and maintenance work order and the operation and maintenance state. Therefore, theproblem of misinformation of the abnormal state caused by inaccurate collected operational data of the metering equipment is avoided, the monitoring accuracy is improved, closed loop monitoring processing of data collection, work order generation and equipment operation and maintenance is formed, and the convenience, pertinence and timeliness of monitoring and operation and maintenance are improved. The invention further provides a monitoring system for the abnormal state of the metering equipment.

The invention discloses an operation safety evaluation method and system of a railway freight vehicle. According to the method, a mass, a centroid position and a rotary inertia parameter of a vehiclebody loaded with cargos are calculated based on data collected by a data acquisition device; the mass, the centroid position and the rotary inertia parameter of the vehicle body loaded with cargos areinputted into a vehicle-track coupling dynamics model as dynamic parameters; a required wheel-rail contact force is calculated by combining the running condition of the vehicle; a derailment coefficient, an overturning coefficient and a wheel load shedding rate of the vehicle are respectively calculated; and then whether the derailment coefficient, the overturning coefficient and the wheel load shedding rate meet corresponding safety conditions is determined to determine whether the safety index of the vehicle is qualified. Therefore, because of consideration of the characteristic of the loaddiscrete distribution of the railway freight vehicle, the running safety state of the railway freight vehicle can be evaluated accurately and effectively, so that the risk of overturning and derailment of the railway freight vehicle is reduced.

The invention discloses a feature point tracking method based on an event camera, and aims to improve the feature point tracking precision. According to the technical scheme, the feature point tracking system based on the event camera is composed of a data acquisition module, an initialization module, an event set selection module, a matching module, a feature point updating module and a templateedge updating module. The initialization module extracts feature points and an edge graph from the image frame. The event set selection module selects an event set S of the feature points from the event flow around the feature point. The matching module matches the S with the template edge around the feature points to solve an optical flow set Gk of n feature points at the moment tk. The feature point updating module calculates a position set FDk + 1 of the n feature points at the tk + 1 moment according to the Gk, and the template edge updating module updates the positions in the PBDk by using IMU data to obtain a position set PBDk + 1 of template edges corresponding to the n feature points at the tk + 1 moment. By adopting the method, the precision of tracking the feature points on the event stream can be improved, and the average tracking time of the feature points can be prolonged.