Digitizing automatic calibration device applied to runway surface friction coefficient testing car

Abstract

The invention discloses a digitizing automatic calibration device applied to a runway surface friction coefficient testing car, relating to calibration of a friction coefficient testing device. The calibration device is composed of a mechanical device, a control device and an onboard power supply, wherein the mechanical device is divided into an actuating mechanism and a support structure, wherein the actuating mechanism is composed of a motor-driven push rod and a pallet, and the support structure is composed of a roller wheel and a support; the control device is composed of a horizontal force sensor, a vertical force sensor, a conditioning circuit, a singlechip, a nixie tube display unit, a wireless remote controller and a control panel, i.e., a wireless remote transmitter. The calibration device carries out sampling, processing, displaying and control by a computer, and the precision of the calibration device completely satisfies the precision requirements of the runway surface friction coefficient testing car, thereby overcoming the disadvantages that a manual calibration method causes artificial reading errors, the precision grade of the calibration device or equipment is low and the operation of the whole calibration process is complex.

Description

technical field [0001] The technical solution of the invention relates to the calibration of a friction coefficient testing device, in particular to a digital automatic calibration device applied to an airport pavement friction coefficient testing vehicle. Background technique [0002] At present, the calibration device of the vehicle-mounted pavement friction coefficient test vehicle used in the airport is still a backward manual calibration method, that is, the reading method of the indication value of the pointer spring scale, which will cause artificial reading errors, and then cause system measurement accuracy. The reduction, and the spring balance is not allowed to return to zero, the repeatability is poor, and the accuracy level of the calibration device or calibration equipment is lower than that of the sensor itself. At the same time, the entire calibration process is complicated to operate, and several people need to work together during calibration. In addition, ...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a digital automatic calibration device applied to the airport pavement friction coefficient test vehicle. The device is sampled, processed, displayed and controlled by a computer, and its precision fully meets the calibration device of the airport pavement friction coefficient test vehicle. It overcomes the shortcomings of artificial reading errors caused by manual calibration, low accuracy level of calibration devices or calibration equipment, and complicated operation of the entire calibration process.

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