JPH0245121B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a wire measuring device.

The electric wires used in prefabricated overhead lines are marked for each span at the factory before being shipped. Therefore, it is necessary to measure with a high degree of accuracy, and conventionally, the measurement has been carried out as follows.

In other words, two gauges are set at a fixed distance, for example, 10m apart, and the wire is run in a straight line between these gauges, with a marker at the gauge on the entrance side of the wire and a mark sensor at the gauge on the exit side. A sensor is provided to feed back the output of the mark sensor to the marker, thereby activating the marker. When the electric wire contains a magnetic material such as steel core aluminum stranded wire (ACSR), the above-mentioned marker should be a magnetized marker with a magnetic mark, and a visible marker with a visible mark for visual confirmation. There will also be a

If you do the above, marks will be added every 10m,
It is easy to cut multiples of 10m, but it is impossible to measure end lengths of less than 10m. For this reason, a measuring scale with an end length using a measuring wheel has been considered. The measuring wheel should be placed in contact with the running electric wire, and the running length of the electric wire should be 1.
It is constructed by attaching a rotary encoder that generates 1000 pulses at equal intervals per rotation with respect to m. By attaching this measuring wheel, you can measure lengths of 10m or less in mm.
You can ask up to.

However, since the measuring wheel is only in contact with the wire, slippage between the wire surface and the outer circumference of the measuring wheel may occur.
Errors occur due to vibrations caused by the running of electric wires.

Furthermore, in the case of measuring meters with magnetic marks, there is a risk that the mark sensor may pick up external noise and cause the magnetic marker to malfunction.

The present invention has been developed in view of the above circumstances, and is capable of preventing errors in measuring wheels and malfunctions of magnetic markers, and is also capable of preventing marking, edge marking, wire running, and marking stopping operations. To provide a wire measuring device that can automatically measure a wire.

The invention will be explained in detail below with reference to the drawings.

In the figure, the electric wire 1 is pulled out from a supply drum 2 on the right side and wound around a winding drum 3 on the left side, forming a linear running portion. A magnetic marker 4 is provided at a position close to the supply drum 2 in this running section, and a mark sensor 5 is provided at a position 10 m away from the supply drum 2 in the direction in which the electric wire runs.

Further, a visible marker 6 and a color spray 24 are provided close to the magnetic marker 4 to make a visible mark. Further, measuring wheels 7, 7 are brought into contact between the visible marker 6 and the supply drum 2 with the electric wire in between, and the shaft of one measuring wheel has the rotation of the measuring wheel 7 with respect to the running length of the electric wire of 1 m. A rotary encoder 8, which generates 1000 pulses per unit and is capable of determining the direction of rotation, is directly connected.

Note that the output of the mark sensor 5 is input to a magnetized gauge amplifier 9, and the magnetized gauge amplifier 9 energizes the magnetic marker 4 every time the mark sensor 5 outputs.

The mark sensor output also causes a magnetization interrupt 11 to the processor system 10 at the same time.

Further, the rotary encoder 8 also performs an interrupt 12 using pulses generated every 1 mm.

The processor system 10 includes a wire thermometer 1
3. Digital panel meters 16, 1 to which the outputs of the room temperature thermometer 14 and wire tension meter 15 correspond, respectively.
It is input via 7 and 18.

Processor system 10 is a teletype TTY
Measuring data is input and measuring results are output by the paper tape reader PTR, or measuring data is input by the paper tape reader PTR and measuring results are output by the paper tape puncher PTP.

On the other hand, the processor system 10 issues a magnetization stop command 9a to the magnetization meter amplifier 9 via the relay output register 19, and an energization 21 of the magnetization indicator lamp 21.
a, energizing 22a of meter indicator lamp 22, visible marker on magnetized meter amplifier 9, visible marker OFF
(shutter ON) commands 9b, 9c, wire withdrawal stop command 23, magnetic marker to magnetized meter amplifier 9,
A command 9d to stop the visible marker and a command 24a to energize the color spray 24 are issued.

Note that the work is started by pressing the zero point magnetization switch 25 and applying a zero point magnetic mark.

Teletype TTY or paper tape reader
The PTR inputs measurement data on how to measure the electric wire on the supply drum 2 and an initial value of the error correction value of the measurement wheel 7 into the processor system 10.

For example, if you want to measure Am, Bm, Cm, etc., Am, (A+B)m, (A+B+C)m...
Input data so as to mark the position of...

When the measurement is started as described above, the magnetized measurement amplifier 9 automatically energizes the magnetic marker 4 and the visible marker every 10 m every time a magnetic mark is detected by the mark sensor 5. Processor system 10 counts the number of activations. On the other hand, the rotary encoder 8 of the measuring wheel 7 makes an interrupt every 1 mm, and the processor system also counts this, but this count is reset to 0 each time the interrupt occurs every 10 m. The counted value before the reset is stored and used as an error correction value for the end length gauge, which will be explained below.

In other words, if the measuring wheel indicates Xm when energizing magnetic markers 4, etc. every 10 m, the error correction value is
10 - Visible marker ON/OFF command 9b, 9 at the point where the value multiplied by /10 is counted.
Output c. In addition, in order to distinguish between visible marks every 10 m and visible marks of a specified length, Directive 24
The color spray 24 is energized by a, and a spray mark of a different color is applied close to the visible mark at the point of the predetermined length.

When the mark of the above-mentioned predetermined length is applied and the first mark sensor output is received thereafter, a wire withdrawal stop command 23 is output, and the wire withdrawal is stopped.

Here, the worker wraps vinyl tape or the like around the predetermined length mark to make it a regular mark for shipping. In this way, the measurement of Am is completed.

After completing the measurement of Am as described above, resume wire withdrawal. Then, in the same manner as described above, a mark is attached at the location (A+B)m, and Bm is measured. Thereafter, measurements are made one after another in the same manner.

In this way, the measuring scale progresses one after another, and when the magnetic mark and visible mark of the final measuring scale are attached,
Wire withdrawal will be suspended.

Furthermore, if it is detected that the remaining length of the wire on the supply drum 2 reaches 20 m before the final measurement is completed, the processor system 10 outputs a withdrawal stop command 23 to stop the wire withdrawal. Here, the worker mechanically connects the wires of the next drum to the wires on the current supply drum to facilitate the drawing of the wires of the next drum.

When the remaining amount of the preceding electric wire connected to the electric wire of the next drum becomes 10 m or less, only the magnetic marker 4 is stopped to prevent the magnetic mark from being attached to the following electric wire. Measuring for a trailing wire is initiated by zero point magnetization for it.

Note that the processor system 10 uses the clock pulse to hold the magnetic marker 4 and the visible marker 6 inactive, for example, except for a period of 500 ms from 300 counts before the time of mark attachment every 10 m, and also keeps the end length meter inactive. The visible markers 6 are held inactive except for the time from 300 counts before to 300 counts after the time of attaching the scale mark, to prevent them from malfunctioning due to external noise.

Furthermore, since the rotary encoder 8 is capable of determining the direction of rotation, if the brake is too strong and the wire moves backwards when the wire is stopped being picked up, the count value in the processor system 10 will be subtracted by that amount. Therefore, there will be no error due to retrograde movement.

As is clear from the above, according to the device of the present invention, each part of the measuring device is automatically controlled by the processor system, so there is almost no possibility of affixing a mark at the wrong position.

In addition, since the measuring ring instructions are self-calibrated, the error when measuring the end length is very small.

Furthermore, since the various markers are held inactive except for a short time before and after the mark is to be attached by the clock pulse, there is little chance of malfunction due to external noise. Further, since work conditions including time, room temperature, wire temperature, wire tension, etc. are output and printed together with the measuring work record, useful materials can be obtained for later wire management.

[Brief explanation of the drawing]

The figure is a block diagram of one embodiment of the present invention. 1... Electric wire, 4... Magnetic marker, 5... Mark sensor, 6... Visible marker, 7... Measuring ring, 8...
...Rotary encoder, 9...Magnetized gauge amplifier,
10...Processor system.

Claims (1)

[Scope of Claims] 1. A magnetic marker that is placed at a certain distance along the running path of the wire and is located on the wire entrance side to attach a magnetic mark, and a mark sensor that is located on the wire exit side and detects the magnetic mark. , a magnetized measuring meter amplifier that energizes the magnetic marker and a visible marker placed close to it to attach a visible mark when the output of the mark sensor is input and output; and a measuring wheel that rotates every time the electric wire runs a certain length. What is claimed is: 1. A wire measuring device comprising a rotary encoder that generates a certain number of pulses and can also determine the running direction, wherein the various markers are controlled by a processor system having the following functions. a Function to count the output of the mark sensor. b Function to count rotary encoder output. c A function that resets the rotary encoder output count value to 0 when the mark sensor output comes in and out, and stores the count value before the reset. d Function to calculate error correction value using count value before reset. e After counting the output of the mark sensor and the output of the rotary encoder corresponding to the predetermined gauge length, correct the counted value of the output of the rotary encoder using the error correction value calculated in the previous section,
A function that activates a visible marker when this corrected value reaches a count value corresponding to a predetermined gauge length.