Special-purpose integrated piston measuring system based on temperature, height difference and rotational speed

Abstract

The invention discloses a special-purpose integrated piston measuring system based on a temperature, a height difference and a rotational speed. The system is composed of a leveling system, a piston system, a sensor system and a display unit. The leveling system consists of a horizontal checking table, a hydraulic control unit and a level instrument. The sensor system includes a temperature measuring module, a speed measuring module and a distance measuring module. The control unit is respectively connected with the horizontal checking table and the level instrument; the horizontal checking table and the level instrument are respectively connected with the piston system; the temperature measuring module, the speed measuring module and the distance measuring module are respectively connected with the piston system; and the temperature measuring module, the speed measuring module and the distance measuring module are respectively connected with the display unit. The piston measuring system has advantages of convenient measurement, high precision, and small error.

Description

technical field [0001] The invention relates to the technical field of piston measurement, in particular to a piston-specific comprehensive measurement system based on temperature, height difference and rotational speed. Background technique [0002] JJG59-1990 second and third standard piston pressure gauge verification regulations stipulate that the initial balance method is used to measure the effective area of ​​the piston. The newly revised JJG59-2007 Piston Pressure Gauge Verification Regulation adds the direct balance method, which is an internationally common verification method and is theoretically more scientific and reasonable. The new regulation stipulates that the initial balance method should only be adopted when the piston system materials, shape and size of the standard piston gauge and the piston gauge to be tested are basically the same. Here we discuss the issues that should be paid attention to during the measurement of the effective area of ​​the piston...

AI Technical Summary

Problems solved by technology

[0022] However, the first measurement method is complex in operation and takes a lot of time; taking out the piston repeatedly can easily cause damage to the piston; the measurement accuracy is poor, and manual measurement and visual observation will bring errors in the supervisor

The second measurement method has a large time error, and it is necessary to ensure that the time measurement accuracy reaches the microsecond level, that is, the crystal oscillator frequency of the main control chip should reach 10MHz or higher, so as to ensure its timing accuracy; the ultrasonic propagation speed has a large error, and the ultrasonic propagation speed is affected by Influenced by the density of the medium, the higher the density of the medium, the faster the propagation speed of the ultrasonic waves, and the density of the medium is closely related to the temperature. It is necessary to accurately measure the ambient temperature and compensate the acoustic time to reduce the measurement error.

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