SU1688110A2 - Slope measuring device - Google Patents

Abstract

This invention relates to railway transport. The purpose of the invention is to improve accuracy. The device has a peFig 1 tunable pulse number comparison unit 21. RS flip-flop tt. additional circuit 10 coincidence, and the RS-flip-flop 11 input is connected via a switch to clock and position sensors 3, the RS-flip-flop output is connected to one circuit 19 input. The second input of which is connected to a pulse counter sensor, another RS- output the trigger 11 is connected to the inputs of the first 12 and second 13 matching circuits, the output of the circuit 19 is connected to the input of the pulse counter 20, the output of which is connected to the tunable number 21 of the number of pulses, and the output of the latter is connected to the reset inputs of the RS flip-flop 18 and account 20.2 snip yl. C 00 00 th

Description

This invention relates to railway transport.

The purpose of the invention is to improve accuracy.

FIG. 1 shows a functional diagram of the proposed device; Fig 2 is a diagram of the operation of the proposed device.

The device contains a code disk 2, a master 3 mounted on the axis 1 of the measuring wheel, suspended on axis 4, an illuminator 5 mounted on the pilot 3, and a sensor of the sensor position 6 mounted on the housing of the illuminator 7 and a sensor 18 of the clock pulse sensor , an illuminator 9 and a photodetector 10 of a counting pulse sensor connected to the photo detectors 6 and 8 RS flip-flop 11, outputs connected to coincidence circuits 12 and 13, the outputs of which are connected to a reversible counter 14 pulses, the outputs of which are connected to ommutatoru 15 stepper motor 16 associated with the drum 17 of the recorder. Above the drum are a tape chart, a typewriter tape, and a recorder printing knife. The device also contains an additional RS-trigger 18, connected to its information Q-output, a coincidence circuit 19, connected to the last pulse counter 20, to the outputs of which a variable set pulse comparison unit 21 is connected, the RS trigger 18 input connected to the photodetector 6 and 8 through pins 22 and 23 of the switch.

The device works as follows

When the instrument is rolled along the rails, the rotation of the measuring wheel is transmitted directly to the code disk 2. A series of pulses of all sensors from the photoreceiver, 8 and 10, is generated (see Fig. 2). Between clocks there are counting pulses, the number of which is equal to the number of slots on the disk 2 between the clock slots. The position of the counting pulses relative to the clock pulses is determined by the angle of the instrument. The difference in the number of pulses in the packets arriving at the circuits 12 and 13 corresponds to the measured slope. In counter 14, the pulses are divided by the number of measurements in the cycle to obtain an average count, which improves the measurement accuracy. The measurement cycle is usually taken in meter paths. When the number of clock slots on the code disk is 24, and two revolutions of the measuring wheel per meter of the track, the number of measurements is 48. Since when the keyboard is displaced by one pulse

the difference of the pulses in the packs is equal to two, a divider by two is also necessary. Finally, to provide different recording scales of excess, one more divider is needed

with variable division factor; In the profilograph, there are three recording scales of 1:25; 1:50; 1: 100. The pulses from the dividers arrive at the inputs of the switch 15. Since the pulses through the channels arrive separately,

0 then the rotor of the stepping motor rotates first in one direction and then in the other. With equal numbers of pulses in packs, the rotor remains in the same position. At the end of the measurement cycle, the printing knife,

5 driven by a measuring wheel, strikes the drum, a print point on the chart tape. The line of dots is parallel to the edge of the tape.

When the device is installed on a horizontal plane to check the zero position, the counting pulses may not coincide with the midpoint between the clock pulses, as shown in FIG. 2 The equalization of the number of pulses in packs is carried out

5 by reducing the number of pulses in that bundle which is larger. The clock pulse (see FIG. 2) sets the trigger 18 to the position 0 on the direct Q-output, the coincidence circuit 12 closes and the circuit opens

0 19 matches. Counting pulses are passed to the input of the counter 20 pulses. The number of pulses transmitted to counter 20 is equal to the number set in block 21, after which counter 20 and RS flip-flop 18 are reset.

5 to its original state. The same number of pulses is reduced in circuit 12. If the number of pulses is greater in another burst, then contact 23 of the switch is closed.

0

Claims (1)

The invention The device for measuring the angle of inclination of the ed. St. FSB 972212, characterized in that, in order to increase accuracy, it 5 is equipped with a unit for comparing the number of pulses with a variable setpoint, an additional RS trigger and a pulse counter, a matching circuit and a switch, and the first matching circuits 0 are made with locking inputs connected to the inverse output of the second RS trigger, the information input of which is connected to the encoder position sensor through the switch contacts and to the sensor 5 clock pulses, and the direct output is connected to one of the inputs of the additional matching circuit, the second input of which is connected to the counting pulse sensor, and the output is connected to the information input of the second pulse counter, whose outputs are connected to the inputs of the specified pulse comparison unit, the output of which connected to the reset inputs of the second RS trigger and second pulse counter. one THEM FIG. 2