SU938017A1 - Device for measuring surface roughness - Google Patents

Description

(54). DEVICE FOR MEASURING SURFACE FIRMNESS

one

The invention relates to a measurement and measurement technique and is intended for a quantitative assessment (by a profipogram) of the surface quality of building components and assemblies as in the course of manufacturing and fines. so in the construction process.

It is known a device dp controlling the surface roughness of an object consisting of consecutive light sources, a light guide, a beam-splitting element fixed in a housing, which contains slots, a photodetector — and a recording circuit made in a vice amplitude-frequency transform that sets the generator a, comparator and recorder 1.

The drawback of the device is the low measurement accuracy associated with the installation scheme of the receiver and the radiator.

Closest to the invention is a device for measuring the surface roughness, which includes transmitting television cameras, a scanning unit, a switch, a marker forming and moving unit, and a recording unit.

The block of formation and movement of the marker is made in the form of an electronic unit of the parallax magnitude and the electronic markers corresponding to points on the surface with the same parallax 2 constitute the image of the surface.

The device has a low accuracy due to the limited resolution of the METHOD & This is due to the fact that the coincidence circuit works when the input signals are equal, are random functions of time.

The purpose of the invention is to improve the measurement accuracy by increasing the resolution of the device.

The goal is achieved by the fact that a device for measuring surface roughness, containing two transmitting television cameras, a scanner, a switch, a 3958 marker and marker displacement unit and registitsin bpc, is equipped with a temporal impulse formation cpu, bpoco measure for alternating imprints, and measuring , the scanner and the switch are connected to the corresponding inputs of the television cameras, the switch, the time interval measurement bpok and the recording bpok are connected pospedovatepno, the order determination unit interleaving impupsov inputs connected to the switch and to the power generating time pulse, and an output - to BpoCom registration input MAHB forming temporary impupsa dyudklyuchen kbloku scanning vyhooyblokaform Rovani and movement marker coupled to corresponding inputs commutators pa determination unit the order of alternation of impulses, the unit of measurement of time intervals and the unit of registration, and the code with the output of the latter, the formation and movement of the marker is filled out by the optoele throne. The drawing shows the block diagram of the device. The device consists of television cameras 1 and 2 connected in parallel with the output of the sweep side 3, which is also connected to the input of the time pulse shaping unit 4, the outputs (television signal) yamer 1 and 2 are connected to the inputs of the switch 5, the output of the switch 5 is connected to the corresponding the input of the determination unit 6 of the order of the pulse alternation and the first input of the time interval measuring 7 side, the second input of which is connected to the output of the temporary impinge forming unit 4 and the second input of the 6 order determining sequence pulse detection unit 8, the inputs of which are connected to the outputs for determining the order of alternating pulses, for measuring the time interval, and the signal bus 9 with the block 10 for forming and moving the light marker along the surface 11 for measuring and moving the marker command buses 12-14 soy; dinen with switch 5, side 6, determining the order of alternation of impediments, side 7 measuring the time interval, and command bus 15, with side 8 of registration, the device works as follows, The stereotepevical system is oriented normally relative to the surface 11 under study, and the scanning direction is aligned with the direction of the profilogram axis. The bpok 10 of the formation and movement of the marker is turned on and the light marker is directed to the repress point corresponding to the beginning of the pro-program. The command bus 12 sends a command from the formation and movement unit of the marker to the switch 5 to transmit a signal from the first thermal camera 1. The command buses 13 and 14 receive the initial installation commands to check box 6 to determine the order of alternation of impulses and start the measurement cycle in the block 7 time interval measurements. When a sequence of pulses formed by block 6 is formed by the light marker and a time pulse, a digital code O is generated in it, corresponding to a certain order of impulses in time. In block 7, the time interval is measured between the leading edges of the time pulse and the impulse from the light marker or vice versa. At the end of the measurement, measurement result codes are transmitted to registration unit 8 from the 6th order of alternation of impulses and 7th time measurement interval and the code of the tag number along the signal line 9 from the 10th formation and movement of markers. At the end of digital printing or reading of indications from the indicators in block 8 of registration, a command is sent to the block to form and move the marker from the command bar 15. Unit 10 generates and transmits a command 12 on skina 12 through switch 5 of the second television signal. In this case, the command lines 13 and 14 again nocTjl-send signals to the initial installation and start-up of blocks 6 and 7. In bpoc 8 of the registration, information about the order of intervals and the time interval between the signals of the second television camera 2 and temporary impuls. Upon completion of the registration of all data in the registration unit 8, the command received via the bar 15 causes the intermixing element of the light marker to switch on the formation and movement of the marker in the direction of the surface research by one step in block 10. In block 10, a number of the marker is generated, sequentially, the code of which is transmitted via signal strip 9. The described measurement cycle is then repeated. In a series of measurements

Claims (1)

Claim A device for measuring surface roughness, comprising two transmitting television cameras, a scanner, a switch, a marker forming and moving unit, and a registration unit, characterized in that, with a chain for increasing measurement accuracy by increasing resolution, it is equipped with a temporary pulse generating unit, a unit determining the order of the alternation of pulses and the unit for measuring time intervals, the scan unit and the switch are connected to the corresponding inputs of the television cameras, switch, unit changes in time intervals and the registration unit are connected in series, the inputs of the unit for determining the alternation of pulses are connected to the switch and to the unit for generating a temporary pulse, and the output is for the registration unit, the input of the unit for generating a temporary pulse is connected to the scan unit, the outputs of the unit for forming and moving the marker are connected to the corresponding inputs of the switch, the unit for determining the alternation of pulses, the unit for measuring time intervals and the registration unit, and the input with the output of the last a block forming and move marker configured optoelectronic.