45results about How to "Meet the needs of measurement" patented technology

The invention belongs to the field of fluid measurement and discloses a three-dimensional wake field testing device which comprises a bracket, sensor bases, a guide ring, guide rods and guide blades;the bracket is used for connecting a component to be tested; the sensor bases are arranged on the guide ring and are used for mounting sensors; the guide ring comprises an inner ring and an outer ring; and multiple guide rods are distributed on the inner ring and the outer ring respectively and are used for connecting the guide blades and the guide ring. By adopting the three-dimensional wake field testing device provided by the invention, the guide rods realizes regulation of front-and-back relative positions of the outer ring and the inner ring by regulating self lengths so as to regulate measurement angles of the sensors; and the guide blades are distributed on the outer surface of the bracket and drives the inner ring and / or the outer ring to rotate by rotating along the outer surfaceof the bracket so as to drive the sensor bases to rotate, so that a measurement region of each sensor on the corresponding sensor base is regulated. Through the three-dimensional wake field testing device, the problems of difficulty in arrangement of the sensors, inconvenience in mounting and the like are effectively solved, a measurement result is accurate and visual, and very large help is provided to performing, operation and data collection of a water test.

The invention relates to a permanent-magnetic hierarchical testing device for the content of magnetic substance powder. The invention is characterized by comprising the following steps: a. respectively adopting a ferrite magnetic material, a common Nd-Fe-B magnetic material and a high-performance Nd-Fe-B material to manufacture magnetic steel in the same specification size, and adopting a structure mode of clamping a high-permeability yoke sheet between every two adjacent magnetic steel to construct at least two hierarchical magnetic sources in an extrusion mode; b. utilizing a circular medium net or a steel-wool magnetism-collected medium made of high-permeability stainless steel to fill a magnetism-collected medium filling area, i.e., a separation space, wherein the magnetism-collected medium filling the magnetism-collected medium filling area can be arranged from sparsely to densely, and the magnetism-collected medium filling area and the corresponding hierarchical magnetic sourcesform a hierarchical closed magnetic system; and c. adopting a pressure device to drive each hierarchical magnetic source to make reciprocating motion in a cylinder and repeatedly enter or exit the separation space so as to realize the separation, the collection and the measurement of magnetic substances.

The invention relates to a mask plate, a semiconductor device and a method for manufacturing the semiconductor device. The mask plate is used to form a pattern on a wafer through exposure, including a scribe pattern, a first pattern and a second pattern. The scribe pattern is used for The dicing region of the wafer forms dicing streets, and the dicing street pattern includes oppositely disposed first and second ends. The first pattern is located at the first end and is used to form a first test element group pattern in the dicing line. The second pattern is located at the second end and spaced apart from the first pattern for forming a second test element group pattern in the cutting line. Wherein, when a plurality of exposure patterns exposed by mask plates are formed on the wafer, the first test element group pattern of one of the two adjacent exposure patterns and the second test element group pattern of the other exposure pattern Set of patterns adjoining.

The invention discloses a current summation method for an internal bridging line independent of a circuit breaker and a position of a disconnecting link. An intelligent substation merging unit and a device maintenance pressing plate for an intelligent electricity meter are utilized, a device maintenance state of a wire inlet merging unit, a device maintenance state of a bridge merging unit and a device maintenance state of the intelligent electricity meter are fully considered through vectors and logics, and when the states are consistent, a corresponding sample value (SV) is counted into a vector sum calculation principle. The corresponding SV is counted into the vector sum calculation principle due to consistent states, the current on a main variable high-voltage side is easily calculated, and the electric energy metering requirements are met, namely the device maintenance states are fully utilized and the wire inlet circuit breakers, bridge circuit breakers and the position of the disconnecting link in the conventional method are not depended; and an independent variable high merging unit is not required to be configured, the cost is saved, the internal logic is simple, and due to human manual operation, the error probability is low.