3results about How to "Measurement data is stable" patented technology

This invention relates to the field of track slab measurement, and discloses a portable track slab flatness measuring device and method. The device includes a track base, a track web at the upper end of the track base, and a track head at the upper end of the track web. Two sets of splicing clamping assemblies are provided on both sides of the upper end of the track head. One set of splicing clamping assemblies has a connecting plate at its upper end, and a laser detector at its upper end. The other set of splicing clamping assemblies has a connecting plate at its upper end, and a laser emitter at its upper end. Both sets of splicing clamping assemblies have electric wheels at their bottoms. The track base, track web, and track head are integrally formed. In this invention, the splicing clamping assemblies adopt a symmetrical clamping structure, eliminating the need to push them in from the end face of the track slab. They can be directly clamped and fixed at any position on the track head, solving the problem of limited installation position in existing devices. This facilitates accurate detection of local defects in the track slab and significantly improves detection flexibility.

This invention provides a method for virtual digital lofting and real-time calibration of installation pose of a guide rail, comprising: providing at least two positioning fixtures, each fixture having three collinear optical markers symmetrically arranged on both sides relative to the center marker; fixing the two positioning fixtures to the upper and lower ends of the guide rail respectively, so that the positioning fixtures are in close contact with the two working surfaces of the guide rail; acquiring the global coordinates of all optical markers in real time through a motion capture camera array, and independently calculating the six degrees of freedom pose deviation of the guide rail based on a coordinate comparison scheme corresponding to the layout of the positioning fixtures: calculating the horizontal translation deviation of the upper end of the guide rail; calculating the tilt angle deviation of the guide rail in the vertical plane; calculating the rotation angle deviation of the guide rail about its own length axis by using the coordinate difference of the two markers on both sides of the same positioning fixture on a single coordinate axis; and making targeted adjustments to the installation state of the guide rail according to the calculated pose deviations of each degree of freedom, thereby completing real-time calibration.

The utility model relates to the field of flue gas treatment, in particular to a dehumidification and ammonia removal device in a desulfurization and denitrification waste gas collection process, which comprises an acquisition probe connected with a flue gas dehumidification and ammonia removal system, the flue gas dehumidification and ammonia removal system is connected with a CEMS (continuous emission monitoring system), the CEMS is connected with an air compressor, the air compressor is connected with an oil-water separator, and the oil-water separator is connected with the flue gas dehumidification and ammonia removal system. The smoke dehumidification and ammonia removal system comprises a filtering system, the filtering system is connected with a dew-point meter, the dew-point meter is connected with a one-way valve, the one-way valve is connected with a first tee joint, the first tee joint is connected with a CEMS system, the other end of the first tee joint is connected with a three-way valve of the filtering system, and a fourth tee joint of the filtering system is connected with a jet pump through a third tee joint. According to the device, moisture, acid mist and ammonia gas in the flue gas are effectively removed, ammonia salt crystallization and pipeline corrosion are reduced, and measured data of a CEMS online system are real and stable. The system can regularly perform back flushing on the pipeline, discharge water in the pipeline and adsorb ammonium salt crystals.