JP6994971B2 - Electronic level - Google Patents

Description

The present invention relates to an electronic level (electronic level), and more particularly to an electronic level at which the height difference between two points can be measured by a waving method.

As a method of measuring the height difference between two points with high accuracy, while swinging the scale back and forth toward the manual level, the staff on the stage side searches for the place where the reading value of the scale on the scale is the minimum and the height. There is known a measuring method called a waving method, which is a measured value of.

In recent years, an electronic level compatible with the waving method has been proposed (see Patent Document 1). At the electronic level of Patent Document 1, a pattern on a stage staff is continuously read by using electronic means, a reading value is approximated by a polynomial to calculate a minimum value, and the minimum value is used as a measured value. There is.

Japanese Unexamined Patent Publication No. 2011-163960

However, at the electronic level of Patent Document 1, since reading and calculation are performed continuously, there is a possibility that the minimum value state cannot be obtained if the swing period of the stage staff is too short, and the stage staff must be swung at the optimum cycle. If so, the accuracy of the measured value will decrease. Therefore, the optimum period is set in advance at the electronic level according to the ambient illuminance and the like. However, in order to swing the stage staff at this optimum cycle, it is necessary to rely on the skill and intuition of the staff on the stage staff side, and there is a problem that measurement errors are likely to occur.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide an electronic level capable of accurately measuring a height difference by using a waving method.

In order to achieve the above object, the electronic level according to one aspect of the present invention reads the scale of the stage staff swinging back and forth at a predetermined cycle, and automatically calculates the collimation position on the stage staff. It is an electronic level, and is characterized by comprising a notification means configured to notify the operator on the stage side of the timing of swinging the stage staff.

In the above aspect, it is also preferable that the notification means is a light emitting unit that blinks light in accordance with the timing.

Further, in the above aspect, it is also preferable that the notification means is a speaker unit that emits sound in accordance with the timing.

Further, in the above aspect, it is also preferable that the notification means is a wireless communication device including a transmitter incorporated in the electronic level main body and a receiver separate from the electronic level main body.

Further, in the above aspect, it is also preferable that the receiver is provided on the stage staff.

According to the electronic level according to the above aspect, when measuring the height difference by the waving method, the staff on the stage staff simply swings the stage staff in accordance with the notified swing timing, and the stage staff is set at the optimum timing. Since it can swing, it is possible to measure the height difference with high accuracy without relying on the intuition and skill of the operator on the stage staff side.

It is a block diagram of an electronic level which concerns on 1st Embodiment of this invention. It is a schematic schematic diagram of the electronic level according to the same form, and a partially enlarged view of the stage staff is shown in the circle on the right side of the figure. It is a flowchart explaining the operation of the electronic level which concerns on the same form. It is a figure explaining the swing timing and the light emission timing by the electron level which concerns on the same form. It is a schematic diagram of the electron level which concerns on the 2nd Embodiment of this invention. It is a schematic diagram of the electron level which concerns on another embodiment of this invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited thereto. Further, in each embodiment, the same components are designated by the same reference numerals, and duplicate description will be omitted.

(First Embodiment)
FIG. 1 is a block diagram of the electronic level 10 according to the first embodiment, and FIG. 2 is a schematic schematic diagram of the electronic level 10. The electronic level 10 includes a telescope 11, a light receiving sensor 12, an arithmetic processing unit 13, and a notification means 14.

The telescope 11 includes an objective lens, a focusing lens, a compensator, a beam splitter, a focal plate, an eyepiece, and the like, and collimates a stage staff 20 arranged perpendicular to a measurement point in front.

The light receiving sensor 12 is a two-dimensional sensor such as a CCD camera. The light receiving sensor 12 is configured so that the image of the stage staff 20 collimated by the telescope is branched by a beam splitter arranged in the telescope 11. The light receiving sensor 12 converts the image of the level staff 20 to be collimated into an image signal which is an electric signal, and outputs the image to the arithmetic processing unit 13. As the light receiving sensor 12, for example, a MOS type FET may be used.

The arithmetic processing unit 13 includes a CPU that performs arithmetic processing, an image memory, an A / D converter, a ROM (Read / Only / Memory) and a RAM (Random / Access / Memory) as auxiliary storage units. The image signal from the light receiving sensor 12 is digitized by the A / D converter and then stored in the image memory. The arithmetic processing unit 13 collates the digitized image data with the image data stored in advance, identifies the scale pattern described later, and automatically calculates the collimation position on the stage staff.

The notification means 14 is a light emitting unit including a light source such as an LED light source. The notification means 14 turns on and off (blinks) based on a command from the arithmetic processing unit 13.

As shown in FIG. 2, in the present embodiment, the notification means 14 is provided on the upper portion of the telescope 11 on the objective lens side. However, the arrangement of the notification means 14 is not limited to this, and may be provided at a position visible to the operator 16 on the stage staff side. Further, the notification means 14 may be provided with parts such as a reflector and a front cover provided with a diffusion step so as to facilitate visibility from the stage staff side operator 16.

The stage staff 20 is a straight substrate made of aluminum or carbon fiber on which scale patterns 21 arranged at predetermined intervals in the vertical direction as shown in the circle on the right side of FIG. 2 are displayed by printing or the like. ..

FIG. 3 is a flowchart illustrating an operation of measuring a height difference by a waving method using the electronic level 10 according to the present embodiment.

When the electronic level 10 starts the measurement, the process proceeds to step S101, and based on the command from the arithmetic processing unit 13, the notification means 14 blinks once to notify the staff of the stage staff of the signal to start swinging. do. The stage staff side worker 16 starts swinging the stage staff in response to this blinking.

Next, in step S102, the arithmetic processing unit 13 controls the notification means 14 to blink at predetermined intervals, and notifies the stage staff side operator 16 of the swing timing. Further, the arithmetic processing unit 13 starts reading the scale pattern of the stage staff via the telescope 11. The staff 16 on the stage staff swings the stage staff according to the timing of blinking of the notification means 14.

Here, the relationship between the blinking of the notification means 14 and the timing of swinging the stage staff will be described with reference to FIG. First, the stage staff side worker 16 holds the stage staff 20 so as to be in the foremost position in accordance with the lighting of the notification means 14 (a).

Next, the scale is swung backward while the notification means 14 is off (b), and when the notification means 14 is turned on again, the stage 20 is held so as to be the rearmost (c). Then, the stage staff 20 is swung forward while the notification means 14 is off (d), and when the notification means 14 is turned on, the stage staff 20 is held so as to come to the front again (e). This position (e) is the initial position (a) of the stage staff.

In this way, the stage staff side operator 16 swings the stage staff with (a) to (e) as one cycle in accordance with the blinking timing of the notification means 14. For example, at the electronic level 10, when the optimum swing period is one round trip every two seconds, the arithmetic processing unit 13 controls the notification means 14 to blink once per second. As a result, the level staff side worker 16 can swing the stage staff 20 in a swing cycle of one reciprocation every two seconds only by swinging the stage staff 20 in accordance with the blinking of the notification means 14.

The optimum swing period may be arbitrarily set according to measurement conditions such as ambient illuminance.

When the shaking of a predetermined number of times is completed in step S102, the process proceeds to step S103, and the arithmetic processing unit 13 calculates the height measurement value. As a method for calculating the height measurement value by the waving method, for example, a known method disclosed in Patent Document 1 can be used.

Next, the process proceeds to step S104, and the arithmetic processing unit 13 determines whether or not the measurement is completed. The determination of the end of measurement is made, for example, by whether or not the variance of the height measurement value calculated from the average value of the height measurement values measured a plurality of times is equal to or less than a predetermined value.

When the measurement is completed (Yes), the process proceeds to step S105, and the arithmetic processing unit 13 stops the pattern light emission of the notification means 14. If the measurement is not completed (No), the process returns to step S102 and the pattern emission of the notification means 14 is continued.

When the pattern light emission is stopped in step S105, the process proceeds to step S106, and the arithmetic processing unit 13 controls the notification means 14 to perform light emission to notify the end of measurement.

The light emission that notifies the end of the measurement can be performed in various modes so as to be recognized by the staff 16 on the stage staff side, such as controlling the light emission to continue lighting for a longer time than the pattern light emission. As a result, the operator 16 on the stage staff recognizes that the measurement of the electronic level 10 has been completed, and the rocking is terminated. After that, the measurement operation of the electronic level 10 ends.

In this way, when the height difference is measured by the waving method at the electronic level 10, the stage staff side operator 16 simply swings the stage staff 20 in accordance with the swing timing notified by the notification means 14, and the height is high. Since the stage staff 20 can be swung at the optimum timing for calculating the measured value, the height difference can be accurately measured without relying on the skill and intuition of the staff 16 on the stage staff side.

Further, according to the electronic level 10 according to the present embodiment, the stage staff 20 can be easily swung at the optimum timing for calculating the height measured value, so that the measurement failure can be reduced. As a result, it is not necessary to redo the measurement, and the time of the entire measurement work can be shortened.

Further, since the stage staff side worker 16 can know the start and end of the measurement in real time, the stage staff side worker 16 does not need to swing the stage staff 20 unnecessarily, and the burden of the measurement work is reduced. ..

Further, the color of the light emission may be changed according to the information to be notified, such that the light emission notifying the start and end of the measurement is blue and the light emission notifying the swing timing is white. By doing so, the operator on the stage staff can easily grasp the signal due to the light emission.

(Second embodiment)
FIG. 5 is a schematic schematic diagram of the electron level 100 according to the second embodiment. The electronic level 100 has the same configuration as the electronic level 10 according to the first embodiment, except that the notification means 114 is not a light emitting unit but a speaker unit.

Based on the command from the arithmetic processing unit 13, the notification means 114 emits a sound to the staff on the stage staff to notify the start of measurement, the swing timing of the stage staff, and the end of measurement. Specifically, it is configured to emit a sound corresponding to the light emission of the notification means 14 according to the first embodiment shown in FIG.

The speaker unit constituting the notification means 114 is not particularly limited, and various known speaker units for emitting sound can be used. The sound emitted by the notification means 114 may be a signal sound or a voice, but the frequency and sound pressure level should be sufficiently recognized by the staff 16 on the stage staff, which is several tens of meters away. Is set to.

(Third embodiment)
FIG. 6A is a schematic schematic diagram of the electron level 200 according to the third embodiment. The electronic level 200 has substantially the same configuration as the electronic level 10 according to the first embodiment, except that the notification means 214 is not a light emitting unit but a wireless communication device.

As the wireless communication device constituting the notification means 214, for example, a wireless communication device using Bluetooth (registered trademark) can be used, but the method is not limited thereto.

The notification means 214 includes a transmitter 231 incorporated in the electronic level 200 main body and a receiver 232 separate from the electronic level 200 main body. The receiver 232 is arranged and used in the vicinity of the staff 16 on the stage staff at the time of measurement.

The notification means 214 transmits signals regarding the start of measurement, the swing timing of the stage staff, and the end of measurement from the transmitter 231 to the receiver 232 based on the command from the arithmetic processing unit 13.

The receiver 232 includes at least one output means 233 such as a light emitting unit, a speaker, and a liquid crystal display for outputting a signal from the transmitter 231 by light, sound, screen display, or the like. In the illustrated example, the output means 233 is a light emitting unit.

Based on the signal from the transmitter 231, the receiver 232 notifies the staff 16 on the stage side of the start of the measurement, the swing timing of the stage staff, and the end of the measurement by light, sound, image display, or the like.

According to the above configuration, since the receiver 232 for notifying the swing timing of the stage staff is arranged in the vicinity of the operator 16 on the stage staff side, the start of measurement from the electronic level 200, the swing timing of the scale, and the measurement It becomes easy to confirm the signal of the end of.

Further, when the output means 233 is configured to be able to output by voice or image display, the receiver 232, in addition to the start of the measurement, the swing timing of the stage staff, and the end of the measurement, the insufficient amplitude of the stage staff in the measurement and the stage staff It is preferable because complicated information such as a range error and a time-out error of a height measurement value can be notified to the level staff side operator 16.

(Fourth Embodiment)
FIG. 6B is a schematic schematic diagram of the electron level 300 according to the fourth embodiment. At the electronic level 300, the notification means 314 is a wireless communication device, but is the same as the electronic level 200 according to the third embodiment except that the receiver 332 of the notification means 314 is attached to the stage staff 320. Has the configuration of.

As described above, when the receiver 332 of the notification means 314 is integrally configured with the stage staff 320, the stage staff side worker 16 who carries the stage staff and performs the measurement work does not need to carry the receiver 332 separately. The work load is reduced.

Although the preferred embodiments of the present invention have been described above, the above embodiments are examples of the present invention, and these can be combined based on the knowledge of those skilled in the art, and such embodiments are also the present invention. Is included in the range of.

10,100,200,300 Electronic level 14,114,214,314 Notification means 16 Stage staff worker 20,320 Stage staff 231 Transmitter 232,332 Receiver

Claims (5)

It is an electronic level that automatically calculates the collimation position on the stage staff by reading the scale of the stage staff that is swinging back and forth at a predetermined cycle, and notifies the operator on the stage staff of the timing of swinging the stage staff. An electronic level characterized by providing a means of notification configured to do so. The electronic level according to claim 1, wherein the notification means is a light emitting unit that blinks light in accordance with the timing. The electronic level according to claim 1, wherein the notification means is a speaker unit that emits sound in accordance with the timing. The electronic level according to claim 1, wherein the notification means is a wireless communication device including a transmitter incorporated in the electronic level main body and a receiver separate from the electronic level main body. The electronic level according to claim 4, wherein the receiver is provided on the stage staff.

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