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

A friction coefficient, automatic calibration technology, applied in the direction of using mechanical devices, measuring devices, instruments, etc., can solve the problems of low accuracy level of calibration devices or calibration equipment, reading errors, and complicated operation in the calibration process, so as to facilitate field work and operation. Convenient, reliable results

CN101629895AInactive Publication Date: 2010-01-20HEBEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2010-01-20
Estimated Expiration
Not applicable · inactive patent

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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.
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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, ...

Examples

Embodiment 1

[0030] The digital automatic calibration device which applies the present invention to the airport pavement friction coefficient test vehicle is placed horizontally directly under the test wheel of the calibrated airport pavement friction coefficient vehicle. First carry out the calibration of the vertical force sensor 5 of the calibration device: first press the vertical force measurement key B on the control panel of the calibration device, then select the "vertical calibration" option on the touch screen of the upper computer of the airport pavement friction coefficient test vehicle, And choose 90 kg vertical force calibration, the test wheel of the airport pavement friction coefficient vehicle starts to fall, and is pressed onto the pallet 3 of the calibration device. At this time, the digital tube display unit of the calibration device displays the current kilogram value, and uses the The value is input into the upper computer of the airport pavement friction coefficient v...