14 results about "Volume measurements" patented technology

The invention discloses a blood vessel inner diameter correction method and device based on an X-ray total attenuation conservation principle and a storage medium, and belongs to the technical field of medical image processing. The core of the method is to discover and utilize the total net attenuation of a blood vessel filled with a contrast agent in an actual motion state and the total net attenuation of the blood vessel in an ideal static state to be kept in conservation. The method comprises the steps that an angiography image is acquired, and a target area and an initial inner diameter measuring line are determined; calculating the gray scale decline amount and the maximum value of each pixel of the line; on the basis of the conservation principle, the inner diameter of the blood vessel in an ideal state is inversely calculated through the formula that the inner diameter is corrected to be equal to sigma [(delta Ii / delta Imax) * Li]. Furthermore, based on the same principle, the method can be expanded and applied to correction of the two-dimensional contour of the target blood vessel. According to the method, errors caused by motion artifacts and resolution limitation are fundamentally compensated through a volume measurement method based on integration and distribution, and the method is particularly suitable for accurate measurement of severe stenosis blood vessels.

The invention discloses a volume measurement method for a multi-station three-dimensional laser scanning soft irregular structure space body, which is characterized in that a three-dimensional laser scanning technology is applied to the measurement of the volume, the length and the width of the soft irregular structure space body, and the measurement method is adopted in the application process. Comprising a point cloud ground processing method, an external attachment removal method, a modeling method, a height calculation method, an XOY plane correction method, a length and width calculation method and the like. According to the method, automatic volume calculation is achieved in a three-dimensional laser scanning point cloud mode, operation is easy, safety is high, the method can be used for measuring the volume, length and width of a soft irregular structure space body, the length, width, height and volume values of the outline of the liquid storage bag can be obtained through calculation, data such as liquid storage mass are generated according to the density value, and the volume value deviation is not larger than 1%; the algorithm is efficient, the time required for whole-process processing is less than 10 minutes, the application range is wide, and the problem that a method for accurately and rapidly measuring the volume of the irregular structure space body of the soft body is needed is solved.

1. The name of the design product: the baffle of the volume measurement, code scanning and weighing all-in-one machine. 2. The use of the design product: the overall use: mainly used for volume measurement, weighing and code scanning of logistics packages; the local use: dust prevention. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: design 1 perspective view. 5. The bottom of the design product is not easy to see or not visible during use, and the design 1 top view is omitted; the bottom of the design product is not easy to see or not visible during use, and the design 2 top view is omitted. 6. Design 1 is designated as the basic design. 7. Other circumstances that need to be explained: this application is a partial design, the dashed line in the figure is not protected, and the solid line in the figure is protected.

The present application provides an indirect measurement device for the rock expansion coefficient, comprising a volume measurement mechanism, a rock screening mechanism, and a rock conveying mechanism. The volume measurement mechanism comprises a measuring housing and a measuring piston provided with a scale. The rock screening mechanism comprises a screening housing and a multi-layer rock screen. The rock conveying mechanism is used to convey rock crushes in different particle size ranges. The rock volume #imgabs0# is measured by the volume measurement mechanism. After the rock to be measured is crushed, rock crushes in different particle size ranges are screened out by the rock screening mechanism. The volume #imgabs1# of the rock crushes in the particle size range is then obtained by the volume measurement mechanism. Based on the weight M0 of the rock to be measured, the weight M1 of the rock crushes in the particle size range, and the volume #imgabs2# of the rock to be measured, a theoretical volume #imgabs4# of the complete rock crushes in the particle size range is obtained based on #imgabs3#. The expansion coefficient k of the rock crushes in the particle size range is calculated based on the formula #imgabs5#. The present application is convenient to operate, simple to calculate, and has a fast measurement speed.

The present invention discloses a volume measurement method, device, system, and computer-readable storage medium, relating to the field of logistics technology. The volume measurement method includes: determining a reference depth based on the maximum value of the distance between a camera and the bottom of a container, wherein the bottom of the container is opposite to the container entrance, the camera's shooting direction is toward the bottom, and the reference depth is greater than or equal to the maximum value; integrating the reference depth within a circumscribed area of ​​the container entrance to obtain an initial reference volume; after the container is loaded with cargo, obtaining a depth map captured by the camera; determining the current reference volume based on the depth of the cargo area in the depth map, the non-cargo area in the circumscribed area, and the reference depth; determining the occupied volume of the cargo based on the difference between the initial reference volume and the current reference volume; and determining the available volume of the container based on the occupied volume of the cargo. Embodiments of the present invention can improve the accuracy of volume estimation.

Embodiments of the present invention relates to a vape / smoke detection device comprising at least one 3D scanning means for measuring a volume of a confined space; at least one particulate matter sensor for measuring floating particles in air; and a processor adapted for taking a first volume measurement of the confined space and a further volume measurement in a selected frequency of the confined space via the range imaging 3D scanning means, wherein if a volume measurement difference between the first volume measurement and any one of the further volume measurements exceeds a selected volume different threshold, measuring a distance between the particulate matter sensor and a position of occupied volume in the confined space causing the volume measurement difference via the 3D scanning means, taking particle measurement in the confined space, generating a vaping / smoking event signal if the particle measurement is inside a selected particle interval dependent on the distance.

An embodiment of the present invention provides a volume measurement device. The volume measurement device includes a box body, a first tray, a second tray, a weighing component, and a partition. The box body is provided with a cavity for accommodating a liquid. The first tray is disposed in the cavity and can be immersed in the liquid, and the first tray is used for carrying an object to be measured. The second tray is disposed on the top side of the box body, and the second tray is used for carrying the object to be measured. The weighing component is connected to the first tray and the second tray. The weighing component can obtain a first weight when the object to be measured is located on the first tray and a second weight when the object to be measured is located on the second tray. The first weight and the second weight are used to calculate the volume of the object to be measured. The partition is disposed at the opening of the cavity, and the partition is used to block at least part of the liquid from leaving the cavity after vaporization. With such a setting, during the measurement process, it is not easy for the second tray to adhere to the liquid, and the measurement of the second weight of the object to be measured is relatively accurate, thereby improving the accuracy of the volume measurement result.

This invention relates to the field of vacuum measurement technology. A method for calibrating a small volume of flow accumulation in a flowmeter is disclosed, comprising: online volume measurement of a standard volume chamber of the flowmeter, the flowmeter including a standard volume chamber, a vacuum flow guide orifice, an inflation module, and a molecular pump assembly, the vacuum flow guide orifice, the inflation module, and the molecular pump assembly being connected to the standard volume chamber respectively; the method comprising: responding to a test command, determining a target measurement mode, the target measurement mode including a first measurement mode and a second measurement mode; according to the target measurement mode, controlling the molecular pump assembly to evacuate the standard volume chamber, and then controlling the inflation module to inflate the standard volume chamber with gas, obtaining the inflation volume and inflation pressure difference; determining the volume of the standard volume chamber based on the inflation volume and inflation pressure difference. This application eliminates the need to load, unload, and send the standard volume chamber for testing, enabling on-site volume measurement of a standard volume susceptible to external factors.

The application discloses a kind of stockpile volume measurement method, device and mixing station, wherein the stockpile volume measurement method is applied to bunker, measuring equipment and moving mechanism are provided on the bunker, the measuring equipment is installed on the moving mechanism, the stockpile volume measurement method includes: obtaining the current coordinates of marker;Wherein the marker is set on the intersection vertical line emitted by the level installed on the moving mechanism for the first time calibration except any point on intersection point;Calculate the distance difference of last coordinate and the current coordinates of the marker;Wherein the last coordinate and the current coordinates are measured by the measuring equipment at different positions;And according to the distance difference and the point cloud coordinates of the stockpile surveyed by the measuring equipment, the volume of the stockpile is calculated.The application can reduce the cost of stockpile volume measurement.

The invention relates to the technical field of flow meters, and provides a flow measurement reference device and method, and the device comprises a supply module which is used for providing low-temperature fluid; the inlet end of the measuring pipeline is connected with the outlet of the supply module, and the measuring pipeline is connected with a flow meter; the mass weighing module is connected with the outlet end of the measuring pipeline through a first branch to form a mass measuring channel, and the mass weighing module is used for weighing the mass of the injected low-temperature fluid; the volume measurement module is connected with the outlet end of the measurement pipeline through a second branch to form a volume measurement channel, and the volume measurement module is used for measuring the volume of the injected low-temperature fluid; the mass measurement channel and the volume measurement channel can be switched and alternatively conducted. According to the arrangement, a mass method and a volume method are combined, the deviation of a single measurement method is reduced, and the accuracy and reliability of a measurement result are enhanced, so that accurate verification and calibration of the low-temperature flowmeter are realized, and the high-precision application requirement is met.

To provide a volume measurement method and a volume measurement system which allow real-time monitoring to a storage space of a raw material.SOLUTION: A volume measurement system comprises: a plurality of lidar sensors 101 to 104 which acquire data of a volume measurement object; and a volume data integration calculation unit 100 which integrates the data acquired by the plurality of lidar sensors to calculate volume of the volume measurement object. The volume measurement system can measure the volume on the basis of the data acquired via many lidar sensors to acquire a very accurate volume measurement value in real time, perform real-time monitoring of a storage space of a raw material as the volume measurement object through control of all applications such as operation control and data acquisition, and utilize periodically acquired result data as an evidence material in various areas such as inventory control and asset management.SELECTED DRAWING: Figure 2