A method of determining an internal volume (V) of a filter or bag device includes pressurizing the device to a first pressure (p.sub.1) lower than a proof pressure by supplying a test gas, pressurizing the device to proof pressure (p.sub.p), and at the same time, measuring the mass flow (m) or the volumetric flow of test gas, determining the gas temperature (T), and determining the internal volume (V) based on the equation for ideal gases, such that: V=m×R×T/(p.sub.p−p.sub.1) where V is the internal volume, m is the mass flow, R is the gas constant, T is the gas temperature, p.sub.p is the proof pressure and p.sub.1 is the first pressure. A computer program product and a testing apparatus for performing the above-mentioned method also are provided.

A method of determining an internal volume (V) of a filter or bag device includes pressurizing the device to a first pressure (p.sub.1) lower than a proof pressure by supplying a test gas, pressurizing the device to proof pressure (p.sub.p), and at the same time, measuring the mass flow (m) or the volumetric flow of test gas, determining the gas temperature (T), and determining the internal volume (V) based on the equation for ideal gases, such that: V=m×R×T/(p.sub.p−p.sub.1) where V is the internal volume, m is the mass flow, R is the gas constant, T is the gas temperature, p.sub.p is the proof pressure and p.sub.1 is the first pressure. A computer program product and a testing apparatus for performing the above-mentioned method also are provided.

Provided is a method for measuring a fuel tank. The measurement method comprises: receiving a fuel quantity change parameter calibrated by a user at a smart terminal (S100); receiving a measurement parameter collected from a fueling terminal through a sensor according to a preset frequency (S102); and inputting the fuel quantity change parameter and the measurement parameter into a preset volume calibration model and estimating the volume of the fuel tank (S104), wherein the volume calibration model at least comprises a full fueling liquid level pressure value and an air liquid level pressure value. The method solves the technical problems of poor fuel tank metering management because the volume of the same type of fuel tank cannot be intelligently estimated.

Provided is a method for measuring a fuel tank. The measurement method comprises: receiving a fuel quantity change parameter calibrated by a user at a smart terminal (S100); receiving a measurement parameter collected from a fueling terminal through a sensor according to a preset frequency (S102); and inputting the fuel quantity change parameter and the measurement parameter into a preset volume calibration model and estimating the volume of the fuel tank (S104), wherein the volume calibration model at least comprises a full fueling liquid level pressure value and an air liquid level pressure value. The method solves the technical problems of poor fuel tank metering management because the volume of the same type of fuel tank cannot be intelligently estimated.

A non-rigid airship or hybrid air vehicle has a pressure-stabilised envelope (100) that includes at least one ballonet (102, 103). A system is provided for measuring the geometry of the lifting gas enclosure (101) within the pressure-stabilised envelope (100). The system comprises a plurality of sensors (104, 109) located outside the ballonet(s) but inside the envelope, for measuring the geometry of the enclosure. Some of the sensors (104) are arranged to measure an internal surface of the pressure-stabilised envelope (100), and others of the sensors (109) are arranged to measure an external surface of the at least one ballonet (102, 103).

A non-rigid airship or hybrid air vehicle has a pressure-stabilised envelope (100) that includes at least one ballonet (102, 103). A system is provided for measuring the geometry of the lifting gas enclosure (101) within the pressure-stabilised envelope (100). The system comprises a plurality of sensors (104, 109) located outside the ballonet(s) but inside the envelope, for measuring the geometry of the enclosure. Some of the sensors (104) are arranged to measure an internal surface of the pressure-stabilised envelope (100), and others of the sensors (109) are arranged to measure an external surface of the at least one ballonet (102, 103).

A detection method used for a fuel tank, comprising: receiving a result of determining whether a constant-speed refueling condition is satisfied (S100); if determined that the constant-speed refueling condition is satisfied, then receiving detection parameters collected from a refueling terminal by means of a sensor according to a preset frequency (S102); and inputting the detection parameters into a preset shape determination model, and determining the shape of a staged fuel tank (S104). Thus, the technical problem of poor fuel tank metering management that is caused by the inability to detect different types of fuel tank shapes is solved.

A system for use in determining a capacity of a storage bin. The system includes a plurality of sensors positioned within the storage bin. Each sensor is configured to determine a used capacity within a portion of the storage bin, and generate a voltage output based on the determined used capacity, wherein the plurality of sensors is configured to generate an aggregate voltage output based on the voltage output of each sensor. A controller is in communication with the plurality of sensors. The controller is configured to receive the aggregate voltage output from the plurality of sensors, determine a minimum voltage output and a maximum voltage output of the plurality of sensors, and determine a total used capacity of the storage bin as a function of the aggregate voltage output, the minimum voltage output, and the maximum voltage output.

An asset monitoring system includes a server, and a monitoring system mounted in a container. The monitoring system includes a camera, a transceiver, and a controller configured to control the camera to capture images of the inside of a container, and control the transceiver transmit the images to a server. The server is configured to process the images to determine loading data including at least one of an unused volume or an unused floor space inside the container, and transmit the loading data to a customer computer.

An asset monitoring system includes a server, and a monitoring system mounted in a container. The monitoring system includes a camera, a transceiver, and a controller configured to control the camera to capture images of the inside of a container, and control the transceiver transmit the images to a server. The server is configured to process the images to determine loading data including at least one of an unused volume or an unused floor space inside the container, and transmit the loading data to a customer computer.