32results about How to "Quickly and accurately measure" patented technology

A method of determining imbalance in a vector signal modulator. First and second channels of a vector signal modulator are stimulated with a multi-tone signal having a power versus frequency spectrum having numerous of frequencies. In response to the stimulation, an output of the vector signal modulator is measured. The first and second channels are simultaneously stimulated with a multi-tone signal having essentially the same characteristics as the one used when separately stimulating the channels. Data collected from both the separate and simultaneous stimulations are used to calculate imbalance versus frequency of the vector signal modulator. Alternatively, two channels of a vector signal modulator are simultaneously stimulated with first and second multi-tone signals. The first and second multi-tone signals have tones at main frequencies and at first and second offsets thereto, respectively. Output measurements are then made and imbalances are calculated.

An inspection system to measure the condition of at least a wall of a ground opening, the inspection system having a head unit for lowering into a borehole during a data collection phase wherein at least one set of test data is collected concerning one or more physical characteristics of the borehole during the data collection phase, the head unit having an internal measurement system and a sensor arrangement with a plurality of sensors facing radially outwardly of a head axis that is generally parallel to at least a portion of a borehole axis, the plurality of sensors allowing the head unit to be moved during the data collection phase without rotation about the head axis, the plurality of sensors at least partially producing the at least one set of test data collected during the data collection phase.

Provided is a container for packing bulk cargoes for transportation, a transportation state monitoring system and a monitoring method. The container for packing the bulk cargoes for transportation includes a container body and an adjustable stowage inner chamber arranged in the container body, and the adjustable stowage inner chamber is adjustable in volume and used for accommodating and fixing the bulk cargoes. The position information and speed information of the container for packing the bulk cargoes for transportation are collected by a speed measurement manager in real time in the transportation process, the temperature information and humidity information of the container for packing the bulk cargoes for transportation are collected by an in-container state monitoring terminal in real time in the transportation process, by comparing the actual transportation speed with the optimal transportation speed of the container for packing the bulk cargoes for transportation, the transportation speed of the container for packing the bulk cargoes for transportation is adjusted in real time, and when the temperature and humidity of the container for packing the bulk cargoes for transportation exceed the set threshold values, an alarm is given out in time. The state parameters of the container for packing the bulk cargoes for transportation in the transportation process can be monitored quickly and precisely and adjusted and controlled in time, the safety, reliability and economy of the transportation of the container for packing the bulk cargoes for transportation are improved, and losses caused by environmental uncertainty and other factors in the transportation process are avoided.

Disclosed is a method for measuring inside dimensions of shoes. In this method a foot model can be obtained after the processes of a plastic filling material being filled into the shoe, shaping, being taken out from the shoe and being restored; then more accurate data of the inside dimensions of the shoe can be obtained by measuring the foot model. Further disclosed is a measuring tool able to be used in the present measuring method. By using the measuring method and the measuring tool, errors encountered when going shopping for shoes can be reduced to the maximum degree by a simple operation, such that the problem that an ordinary consumer could buy a pair of perfect fitting shoes only if he / she tries them personally can be solved.

The invention discloses a device for measuring an adhesive phase of wet mud. The device is characterized by comprising an experiment table (1), wherein a wet mud box (2) is arranged on the table-board of the experiment table (1); a pressing piston (3) is arranged in the wet mud box (2); by virtue of a bottom opening of the wet mud box (2), wet mud in the box is in contact with the table-board of the experiment table; the wet mud in the wet mud box (2) can be pressed by the pressing piston (3); the wet mud box (2) is connected to one end of a pull rope (4), and the other end of the pull rope (4) bypasses a pulley (5) and is vertically downwards connected to a scale (6); and a weight (7) is arranged in the scale (6). The device disclosed by the invention is simple in structure, low in cost and high in reliability, the adhesive phase of the wet mud can be rapidly and accurately measured, and a theoretical basis is provided for drying treatment of the wet mud. The wet mud is rapidly heated in the wet mud drying process, so that the solid content of the wet mud exceeds the adhesive phase in an extremely short time, the wet mud is prevented from being adhered into a drying cavity or a pipeline, blockage is avoided, and normal operation of a drying process is guaranteed.

A measurement system for positioning accuracy of a robotic arm includes the robotic arm, a computing device, a robotic arm controlling device, a first magnetic element and a second magnetic element. The robotic arm controlling device is electrically connected to the robotic arm and the computing device. The first magnetic element is disposed on a robotic arm. The second magnetic element is disposed on a fixed platform. One of the first magnetic element and the second magnetic element is electrically connected to the computing device. The robotic arm controlling device controls the robotic arm to move the first magnetic element above the second magnetic element to generate a magnetic field. The computing device is configured to calculate a plurality of movement error information of the first magnetic element in the magnetic field, and count the plurality of movement error information to obtain a positioning accuracy of the robot arm.