Survey method and survey program

Abstract

To enable a surveyor to transmit a measurement instruction to a survey instrument apparatus by a measurement instruction part to be operable while gazing at a horizontal display part.SOLUTION: A survey method includes: a target arrangement step of enabling a surveyor W to allow a distal end 221 of a target holder 200 to have contact with a measurement object T with the use of a survey instrument apparatus 100 for measuring a position of the target 210 by following, the target holder 200 for holding the target 210, a level gauge 400 having a horizontal display part 410; and a measurement instruction device 300 having a measurement instruction part 321 for transmitting an instruction to survey the position of the target 210 by the instruction of the surveyor W to the survey instrument apparatus; a vertical confirmation step of enabling the surveyor W to confirm perpendicularity by visually recognizing the horizontal display part 410; a measurement instruction step of allowing the measurement instruction to be transmitted to the survey instrument apparatus 100 by the measurement instruction part 321 to be operable by the surveyor W while gazing at the horizontal display part 410; and a measurement step for measuring the position of the target 210 based on the measurement instruction received by the survey instrument apparatus 100.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a surveying method and a surveying program. [Background technology]

[0002] Traditionally, total stations (TS) have been used in surveying sites as high-precision electronic surveying devices that combine the functions of a theodolite and an electronic distance meter (EDM) and can measure angle and distance simultaneously. The TS also has the function of automatically tracking a pinpole equipped with a retroreflective prism that serves as a target for the measurement position, and measuring its position. In recent years, when measuring the position of a measurement target using these prisms and TS, a technique has been used in which measurement instructions are transmitted using a surveyor's tablet terminal or the like at the site (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2023-73151 A Summary of the Invention [Problem to be solved by the invention]

[0004] By the way, in order to measure the position of a measurement target using a prism and a TS, it is necessary to know the vertical distance that the prism is separated from the ground. The pin pole that holds the prism has a pin at its tip, and the pin pole is usually set up vertically with the pin facing down to ensure the verticality of the pin pole, and the position is measured in a state where it can be assumed that the prism is at a specified height above the ground.

[0005] However, the verticality of the pinpole must be guaranteed by the surveyor who holds it in his / her hand. While holding the pinpole in one hand, the surveyor must also operate a tablet terminal or the like that sends instructions to the surveying equipment such as TS with the other hand. Therefore, in the past, the surveyor had to gaze at the level attached to the pinpole, check the verticality, and issue measurement instructions to the surveying equipment. More specifically, it was necessary to gaze at the level attached to the pinpole to check the verticality, and press the measurement instruction button displayed on the screen of a tablet terminal or the like held as a separate device at the moment when it was vertical, while checking the timing.

[0006] In that case, after visually checking the level, it is necessary to move one's gaze to the screen of a tablet device or the like and then press a button, and there is a risk that the verticality may not be maintained between the time one looks away from the level and the time the button is pressed. In that case, if the measurement command is sent at a time when the pinpole is not vertical, the position of the prism will not be measured accurately. In other words, such measurement commands are the work of an experienced surveyor and are difficult for beginners. Furthermore, even for an experienced person, it is a task that requires concentration and time.

[0007] Therefore, the object of the present disclosure is to enable a surveyor to send measurement instructions to the surveying instrument using a measurement instruction unit that can be operated while gazing at the horizontal display unit, in a surveying operation using a surveying instrument capable of automatically tracking and measuring the position of a target using a light beam, a linear target holder that holds the target and has a known length from its tip to the target, and a level having a horizontal display unit that displays the verticality of the orientation of the target holder in real time when the tip of the target holder is in contact with the object to be measured. [Means for solving the problem]

[0008] In order to achieve the above-mentioned object, the surveying method disclosed herein allows a surveyor to measure the position of a target by using a surveying instrument capable of automatically tracking and measuring the position of a target using a light beam, a linear target holder that holds the target and has a known length from its tip to the target, a level having a horizontal display unit that displays in real time the verticality of the orientation of the target holder when the tip of the target holder is in contact with an object to be measured, and a measurement instruction device having a sensor unit that can sense whether the surveyor's fingers are in contact with or separated from the target and a measurement instruction unit that transmits an instruction to the surveying instrument to measure the position of the target. A surveying method for measuring the position of a target, comprising the steps of: a target setting step in which a surveyor brings the tip of a target holder into contact with an object to be measured; a measurement waiting step in which the surveyor touches the sensor unit of a measurement instruction device with his or her finger and waits for measurement; a vertical confirmation step in which the surveyor visually checks the horizontal display unit to confirm verticality; a measurement instruction step in which the surveyor moves his or her finger away from the sensor unit, and when the sensor unit detects the movement away, the measurement instruction unit sends a measurement instruction to the surveying instrument; and a measurement step in which the position of the target is measured based on the measurement instruction received by the surveying instrument.

[0009] In addition, the surveying method disclosed herein is a surveying method in which a surveyor measures the position of a target using a surveying instrument capable of automatically tracking and measuring the position of a target using a light beam, a linear target holder that holds the target and has a known length from its tip to the target, a spirit level having a horizontal display unit that displays in real time the verticality of the orientation of the target holder when the tip of the target holder is in contact with the object to be measured, and a measurement instruction device having a measurement instruction unit that sends instructions to the surveying instrument to survey the position of the target at the command of the surveyor, and the method includes a target setting step in which the surveyor brings the tip of the target holder into contact with the object to be measured, a vertical confirmation step in which the surveyor visually checks the horizontal display unit to confirm the verticality, a measurement instruction step in which the surveyor sends a measurement instruction to the surveying instrument using the measurement instruction unit that can be operated while gazing at the horizontal display unit, and a measurement step in which the position of the target is measured based on the measurement instruction received by the surveying instrument.

[0010] In addition, the surveying program disclosed herein is a program stored and executed in a measurement instruction device that instructs the surveying instrument to measure the position of the target in a surveying carried out using a surveying instrument capable of automatically tracking and measuring the position of a target using a light beam, a linear target holder that holds the target and has a known length from its tip to the target, and a level having a horizontal display unit that displays in real time the verticality of the orientation of the target holder when the tip of the target holder is in contact with the object to be measured, and is intended to execute a measurement waiting step in which the sensor unit detects contact with the surveyor's fingers and puts the measurement on hold, and a measurement instruction step in which the measurement instruction unit sends a measurement instruction to the surveying instrument when it detects that the surveyor's fingers have been moved away. Effect of the Invention

[0011] According to the present disclosure, a surveyor can send measurement instructions to the surveying instrument while watching the horizontal display portion of the spirit level, so that the target holder holding the target can send measurement instructions at a timing perpendicular to the object to be measured, thereby enabling the position of the target to be measured more accurately. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is an overview showing the configurations and surveying conditions used in the surveying method of the present disclosure. [Diagram 2] A diagram explaining the horizontal display section of a spirit level and how to use it [Diagram 3] Sequence diagram showing the survey method [Figure 4] FIG. 13 is a diagram showing an example of a sensor section displayed on a screen. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] An embodiment of the present disclosure will be described with reference to the drawings.

[0014] 1 is an overview diagram showing each component and a surveying situation used when carrying out the surveying method of the present disclosure, and is also a block diagram showing the components of the surveying instrument 100 and the measurement instruction device 300. In this diagram, a surveyor W sets up the surveying instrument 100 in an appropriate location, moves around the work site holding a linear target holder 200 holding a target 210 and the measurement instruction device 300, brings the tip 221 of the target holder 200 into contact with the measurement object T whose position he wishes to measure, and causes the position of the target 210 to be measured by the surveying instrument 100.

[0015] The surveying instrument 100 is, for example, a total station (TS). The surveying instrument 100 may be a surveying instrument using a light wave method such as a TS including a total station. The light wave method such as a TS includes, in addition to a TS, a measuring instrument using a light wave method that can perform measurements equivalent to a TS with an automatic tracking function and does not have a telescope.

[0016] The surveying instrument 100 has a function for measuring the position of the target 210. This function is realized by the surveying unit 110. The surveying unit 110 further has a distance measuring unit 111 and an angle measuring unit 112. The distance measuring unit 111 is a unit that measures the oblique distance to the surveyed device. This role is performed by an optical range finder. The angle measuring unit 112 is a unit that detects the horizontal angle and vertical angle, and the TS can measure the vertical angle and horizontal angle in the aiming direction.

[0017] The surveying instrument 100 has a function of automatically tracking the position of the target 210. Such a function is realized by the tracking control unit 150. The tracking control unit 150 controls the rotation drive amount of the horizontal rotation drive unit and the vertical rotation drive unit, so that the TS can automatically track the target 210.

[0018] The surveying instrument 100 has a function of receiving a measurement instruction transmitted from the measurement instruction device 300, and measuring the position of the target 210 by the surveying unit 110 based on the measurement instruction. Such a function is realized by the surveying communication unit 130 and the surveying unit 110.

[0019] The target holder 200 comprises a target 210, a rod-shaped portion 220, and a tip 221 (also called a ferrule). The target holder 200 is, for example, a pin pole or a prism pole. The rod-shaped portion 220 is a pole and has a linear shape.

[0020] The target 210 is, for example, a light reflecting device, more specifically, a retroreflecting prism. This retroreflecting prism has a function of reflecting light such as infrared light emitted from the TS and returning it to the TS.

[0021] The rod-shaped portion 220 is a straight rod-shaped body. A target 210 and a level 400 (described later) are attached to a part of the rod-shaped portion 220.

[0022] The tip 221 is a pin and can basically come into contact with a measurement target T such as the ground or the top surface of a stake at one point.

[0023] The target holder 200 holds a level 400 .

[0024] The level 400 has a horizontal display unit 410 that displays in real time the verticality of the orientation of the target holder 200 when the tip 221 of the target holder 200 is in contact with the object T to be measured.

[0025] The level 400 is, for example, a vial level. Vial levels include bubble levels, line levels, and torpedo types. A level other than a vial level is a digital level. The meaning of the level 400 may be interpreted as broadly as possible, and includes a level having multiple vials arranged along multiple directions such as a vertical axis, a horizontal axis, and an inclined axis. These levels display the horizontality, etc. in real time regardless of the intention of the surveyor W, so they require constant attention.

[0026] Fig. 2 is a diagram for explaining a level display section 410 of a level 400 and a method of using the same, taking a vial level as an example. In Fig. 2, the level display section 410 of the vial level as an example is a level container 420 covered with a transparent lid or tube made of plastic, glass, or the like, filled with a predetermined volume of air bubbles 422 that can be seen together with liquid 421 such as colored ethanol or oil.

[0027] In this level 400, the shape of the level container 420 is curved so that it protrudes upward at the center, and if it is placed horizontally, the air bubble has the property of always trying to return to the center. Conversely, if the level 400 is tilted, the liquid 421 moves under the influence of gravity, so that the air bubble 422 moves from the center. By utilizing this property, it is possible to detect a certain levelness as long as the position of the air bubble 422 is within a range relative to a predetermined reference mark 411. Such a vial level is inexpensive and easy to obtain, small and portable, and can detect levelness with high accuracy.

[0028] The level 400 is attached to the rod-shaped portion 220 so as to be in a positional relationship that detects the horizontality of a plane perpendicular to the direction of the straight line of the rod-shaped portion 220. In other words, when the level 400 detects the horizontal, the verticality of the rod-shaped portion 220 can be detected automatically. The verticality referred to here also means parallelism to the normal to the ground when the ground is considered to be flat. In other words, it is the direction of the gravitational force of the earth, that is, the direction in which gravity acts, and may be called verticality because it indicates a state of being upright against the gravity of the earth. Therefore, the detection of the horizontality by the level 400 and the detection of the verticality of the rod-shaped portion 220 may be considered to be synonymous.

[0029] Returning to Fig. 1 for further explanation, the measurement and instruction device 300 is a portable terminal that can be easily carried by the surveyor W at the surveying site. More specifically, the measurement and instruction device 300 can be, for example, a smartphone, a feature phone, a tablet, a handheld computer device, a wearable device (such as a glasses-type device or a watch-type device), etc. The measurement and instruction device 300 can be configured by installing application software on these general-purpose devices.

[0030] The measurement instruction device 300 includes at least a terminal communication unit 330 capable of wirelessly or wired communication with the surveying instrument 100, and a measurement instruction unit 321 for issuing measurement instructions to the surveying instrument 100 via the terminal communication unit 330. The measurement instruction unit 321 is a measurement instruction unit 321 that can be operated by a surveyor while gazing at the horizontal display unit 410. This will be described later. In addition, the measurement instruction device 300 may include a terminal control unit 310, a terminal storage unit 320, an input unit 340, and a screen unit 350.

[0031] The terminal control unit 310 executes the functions and / or methods realized by the code or instructions included in the program stored in the terminal storage unit 320. The measurement instruction device 300 includes a computer for executing the program. The terminal control unit 310 may include, for example, a central processing unit (CPU), an MPU, a GPU, a microprocessor, a processor core, a multiprocessor, an ASIC, an FPGA, etc., and may realize each process disclosed in each embodiment by a logic circuit or a dedicated circuit formed in an integrated circuit, etc. In addition, these circuits may be realized by one or more integrated circuits, and multiple processes shown in each embodiment may be realized by one integrated circuit. In addition, the terminal control unit 310 may include a main memory unit that temporarily stores the program read from the terminal storage unit 320 and provides a working area.

[0032] The input unit 340 can receive input from the surveyor W, who is the user, and transmit the input information to the terminal control unit 310. For example, the input unit 340 can include hardware input means such as a button, software input means displayed on the screen unit 350 such as a touch panel, a remote controller, or audio input means such as a microphone.

[0033] The screen unit 350 can be realized by any configuration capable of displaying an image (screen). For example, the screen unit 350 can be a flat display such as a liquid crystal or OLED, a curved display, a folding screen provided on a foldable terminal, a head-mounted display, or a device capable of displaying an image by projection onto a substance using a small projector, or by forming an image using XR technology (a concept including AR, VR, and MR).

[0034] The screen unit 350 may include a sensor unit 351 that detects contact of a human finger with a touch panel or the like. The sensor unit 351 can sense whether the surveyor's finger is in contact with or separated from the touch panel. Specifically, a capacitive touch panel can be used. Furthermore, detecting a human finger is not limited to direct contact with the skin, but also includes detection of contact of a finger through gloves capable of operating a touch panel.

[0035] The terminal storage unit 320 has a function of storing various programs and various data required. In addition, the terminal storage unit 320 can store measurement information received by the terminal communication unit 330 and position information calculated based on the measurement information. The terminal storage unit 320 can also store information on land used at a construction site, etc. (elevation, etc.), design information, etc. The terminal storage unit 320 can be configured with various storage media such as HDD, SSD, flash memory, etc.

[0036] The state of the horizontal display section 410 of the level 400 is susceptible to sensitive changes depending on the position of the rod-shaped section 220, and to keep it vertical requires the surveyor W to control the position of his or her arms and hands and receive visual feedback accordingly.

[0037] For example, if surveyor W holds rod-shaped portion 220 vertically in his left hand while operating measurement instruction device 300 in his right hand, after visually checking horizontal display portion 410 to confirm verticality, a blind spot may occur in which the verticality cannot be monitored while moving his gaze to screen portion 350.

[0038] Therefore, the inventors conducted various tests and found that if the measurement instruction can be given while watching the horizontal display portion 410, the measurement can be performed while ensuring that the rod portion 220 is stably vertical.

[0039] Such measurement instruction unit 321 capable of performing measurement instruction operations can use operations by pressing a hardware button device without visual confirmation, or operations by the surveyor W's own voice.

[0040] A hardware button device without visual confirmation is not a button whose position must be visually confirmed and then pressed, such as a button displayed by software processing on the screen unit 350. It is a mechanical button that can be held in the hand and whose position can be easily grasped without visual confirmation, and is an existing button element that transmits a signal via a piezoelectric element or the like when pressed.

[0041] With this type of measurement instruction unit 321, the surveyor W can transmit measurement instructions while gazing at the horizontal display unit 410, and can measure the position of the target more accurately.

[0042] However, even with the measurement instruction unit 321 that can be operated while watching the horizontal display unit 410, there is still a possibility that the awareness of monitoring the verticality is lost. In other words, when issuing instructions by voice, one must be conscious of issuing a voice, and when pressing a button, one must be conscious of pressing a button, and at that moment, there is a possibility that the awareness of monitoring the verticality is lost and confirmation is neglected. In addition, although this is merely a speculation by the inventor, it is also thought that muscle movements such as moving the mouth when issuing instructions by voice, and putting force into the fingers when pressing a button, affect the movement of the arm or hand holding the rod-shaped portion 220, thereby worsening the verticality.

[0043] As a result of thorough verification by the inventors, the action that does not easily lose the awareness of monitoring the verticality, has little effect on the movement of the muscles of the whole body, and allows the surveyor W himself to decide the timing of the measurement instruction is the action of "releasing the pressed finger." In order to transmit the measurement instruction by this action, the measurement instruction unit 321 may be configured as follows.

[0044] The sensor unit 351 can sense contact with the surveyor W's finger. Such a sensor unit 351 can be realized by a capacitive touch panel as described above, or the like. The measurement instruction unit 321 determines that measurement standby is in progress when the surveyor first touches the sensor unit 351 and maintains that state. Measurement standby can be determined by detecting whether the sensor unit 351 is pressed and held for a predetermined period of time or more (e.g., 2 seconds or more) and whether contact is maintained without the surveyor's finger being removed.

[0045] The sensor unit 351 can also detect when the surveyor W's fingers have been removed. The measurement instruction unit 321 determines that a measurement instruction has been issued when the surveyor W's fingers have been removed from the sensor unit 351 during measurement standby. Then, the measurement instruction is transmitted to the surveying instrument 100 via the terminal communication unit 330.

[0046] With this type of measurement instruction unit 321, the surveyor W can send measurement instructions while watching the horizontal display unit 410. In addition, his / her awareness of monitoring the vertical is not lost, and unnecessary muscle movements do not affect the holding of the rod-shaped portion 220, allowing the position of the target to be measured with even greater accuracy.

[0047] The above is the configuration of the surveying instrument 100, target holder 200, measurement indicator 300, and level 400 used for surveying in this disclosure.

[0048] 3 is a sequence diagram showing a surveying method using the surveying device 100, the target holder 200, the measurement and instruction device 300, and the level 40. The following sequence will be described using as an example the flow of driving piles at a site.

[0049] 3, first, in step S101, the surveying instrument 100 is installed at a predetermined position on-site. This sets the instrument point. The surveying instrument 100 can calculate its own position by measuring two known points from the installed position.

[0050] Next, in step S201, the surveyor W brings the target holder 200 into contact with the measurement target T (target installation step). When installing the target holder 200, the surveyor W can read design information such as a stakeout point that has been stored in advance in the terminal storage unit 320 of the measurement instruction device 300. Based on the read design information of the stakeout point, the measurement instruction device 300 may guide the surveyor W to the stakeout point via the screen unit 350.

[0051] Next, in step S202, the surveyor W holds the rod-shaped part 220 vertically and touches his finger to the sensor part 351 of the measurement instruction device 300. When the sensor part 351 detects the long press state, it puts the device into measurement standby in step S301 (measurement standby step). Note that if the device is not to be put into measurement standby, there is no need to press and detect it.

[0052] 4 is a diagram showing an example of the sensor section 351 displayed on the screen section 350 of the measurement instruction device 300. When a touch panel display is used, the entire screen section 350 can be used as the sensor section 351. The measurement standby / measurement instruction button MC may be provided on the entire screen or on a part of the screen. To make the surveyor W aware that the measurement is in standby, a display such as changing the color of a part of the screen (measurement standby state display) may be performed. This allows the surveyor W to recognize that the measurement is currently in standby, and the attitude of the rod section 220 can be maintained accordingly, and preparations for a measurement instruction can be made.

[0053] Next, in step S203, the surveyor W holds the rod-shaped portion 220 vertically and visually checks the horizontal display portion 410 of the level 400 to confirm that it is vertical.

[0054] Next, in step S204, the surveyor W issues a measurement instruction by removing his or her fingers from the sensor unit 351. Note that, if the measurement standby is not to be made as described above, this step is not performed.

[0055] Next, in step S302, the sensor unit 351 detects that the fingers of the surveyor W have been released. If the measurement standby is not to be performed as described above, steps S204 and S302 are not performed.

[0056] Next, in step S303, the measurement instruction unit 32 transmits a measurement instruction to the surveying instrument 100 (measurement instruction step). When the measurement instruction is transmitted, the screen unit 350 or the like may display that the measurement instruction has been issued.

[0057] Next, in step S102, the surveying instrument 100 measures the position of the target 210 based on the measurement instruction received by the measurement instruction unit 321 (measurement step). This process is also called radiation observation in existing surveying methods.

[0058] The position information thus measured may be stored in the surveying instrument 100 or the measurement and indicating device 300.

[0059] According to the surveying method disclosed herein, the surveyor can send measurement instructions to the surveying instrument while watching the horizontal display portion of the spirit level, so that the target holder holding the target can send the measurement instructions at a timing perpendicular to the object to be measured, thereby making it possible to measure the position of the target more accurately.

[0060] Furthermore, the awareness of monitoring the verticality is not diminished, and unnecessary muscle movement does not affect the holding of the rod-shaped portion, so the target position can be measured with even higher accuracy.

[0061] Furthermore, such bubble levels, such as bubble levels, are inexpensive and easily available, small and portable, and capable of detecting the horizontal level with high accuracy, yet are easy to handle, even if monitoring them requires careful attention.

[0062] Furthermore, in order to carry out such a surveying method according to the present disclosure, some of the steps can be executed by a computer program stored and executed in the measurement instruction device 300. Specifically, a measurement standby step in which the sensor unit 351 detects contact with the surveyor W's fingers and waits for measurement, and a measurement instruction step in which the measurement instruction unit 321 transmits a measurement instruction to the surveying instrument 100 when the sensor unit 351 detects that the surveyor W's fingers have been released can be executed.

[0063] This allows the surveyor to send measurement instructions to the surveying instrument while watching the horizontal display of the spirit level, so that the measurement instructions can be sent at a timing when the target holder holding the target is perpendicular to the object to be measured, allowing the position of the target to be measured more accurately.

[0064] Although the description of the embodiment of the present invention is finished above, the aspects of the present invention are not limited to this embodiment. In particular, various alternative means are suggested for the measurement instruction unit 321 that can be operated while gazing at the horizontal display unit 410. For example, a method of image recognition of gestures of a part of the body such as the hand or mouth using a camera, a method of making a predetermined sound by snapping fingers, a method of using a switch that is stepped on with the foot, etc. are included. Note that eye tracking is excluded from the above means. This is inappropriate because it requires the movement of the gaze. [Explanation of symbols]

[0065] W Surveyor T Measurement target 100 Surveying instruments 200 Target holder 210 Target 220 Rod-shaped part 221 Tip 300 Measurement instruction device 351 Sensor section 321 Measurement instruction section 400 Level 410 Horizontal display section

Claims

1. A surveying instrument capable of automatically tracking and measuring the position of a target using a light beam; A linear target holder that holds the target and has a known length from its tip to the target; a level having a horizontal display unit that displays in real time the verticality of the orientation of the target holder when the tip of the target holder is in contact with a measurement object; A surveying method in which a surveyor measures the position of a target using a measurement instruction device having a sensor unit capable of detecting whether a surveyor's finger is in contact with or separated from the target and a measurement instruction unit that transmits an instruction to the surveying instrument to measure the position of the target, comprising: a target setting step in which the surveyor brings the tip of the target holder into contact with a measurement target; a measurement standby step in which the surveyor touches the sensor unit of the measurement instruction device with his / her finger to standby for measurement; a vertical confirmation step in which the surveyor visually checks the horizontal display unit to confirm verticality; a measurement instruction step in which the surveyor removes his / her finger from the sensor unit, and when the sensor unit detects the removal, the measurement instruction unit transmits a measurement instruction to the surveying instrument; A surveying method comprising a measuring step of measuring the position of the target based on the measurement instruction received by the surveying instrument.

2. 2. The surveying method according to claim 1, wherein the level is a bubble level.

3. A surveying instrument capable of automatically tracking and measuring the position of a target using a light beam; A linear target holder that holds the target and has a known length from its tip to the target; a level having a horizontal display unit that displays in real time the verticality of the orientation of the target holder when the tip of the target holder is in contact with a measurement object; a measurement instruction device having a measurement instruction unit that transmits an instruction to the surveying instrument to measure the position of the target according to an instruction from the surveyor, the surveyor measures the position of the target using the measurement instruction device, a target setting step in which the surveyor brings the tip of the target holder into contact with a measurement target; a vertical confirmation step in which the surveyor visually checks the horizontal display unit to confirm verticality; a measurement instruction step of transmitting a measurement instruction to the surveying instrument by the measurement instruction unit which can be operated by the surveyor while gazing at the horizontal display unit; A surveying method comprising a measuring step of measuring the position of the target based on the measurement instruction received by the surveying instrument.

4. A surveying instrument capable of automatically tracking and measuring the position of a target using a light beam, a linear target holder for holding the target and having a known length from its tip to the target, and a level having a horizontal display unit for displaying in real time the verticality of the orientation of the target holder with the tip of the target holder in contact with an object to be measured, the program being stored and executed in a measurement instruction device that instructs the surveying instrument to measure the position of the target, comprising: a measurement standby step of detecting contact with a surveyor's finger by the sensor unit and standby for measurement; A surveying program for executing a measurement instruction step in which a measurement instruction unit transmits a measurement instruction to the surveying instrument when the sensor unit detects that the surveyor's fingers have been released.

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