JP3527562B2 - Total station and survey system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a total station in which a light wave distance measuring device and an electronic theodolite are integrated, and data processing can be performed for a distance measuring value and an angle measuring value, and this total station and an external communication device. A surveying system consisting of and.

[0002]

2. Description of the Related Art Conventionally, as a surveying instrument for measuring the distance, elevation, etc. of a land, a ranging finder such as a lightwave ranging finder and a goniometer such as an electronic theodolite have been generally used. The light-wave rangefinder measures an oblique distance from a specific measurement point to a measurement target point. The electronic theodolite measures the direction of the measurement target point as a horizontal angle and an altitude angle centered on a specific measurement point. In addition, recently, a total station equipped with a calculator that calculates the horizontal distance and altitude difference between the measurement point and the measurement point based on the results of combining these optical rangefinder and electronic theodolite has been put to practical use. Has been done.

A conventional total station has been systematized so as to transfer such measurement results to an external storage device called a data collector. This data collector is a small computer equipped with a central processing unit (CPU), stores data such as measurement results transferred from the total station, and executes a data processing program on this data. It was possible to analyze various data and issue surveying instructions to the total station. In this way, executing a data processing program to perform surveying with added value beyond simple distance measurement and angle measurement is called "applied surveying".

In the conventional system, in order to perform such data transfer, a serial port (RS-232C port) is provided in each of the total station and the data collector, and these serial ports are connected by a cable. .

[0005]

By the way, when transferring the above-mentioned measurement results or instructing surveying, during the surveying,
The total station and the data collector must be connected by a cable.

However, since the total station can rotate in the horizontal direction by 360 ° or more, the cable may become entangled with the tripod for installing the total station on the ground or the total station itself, which hinders smooth surveying work.

The present invention has been made in view of the above problems, and no matter which direction the main body is rotated with respect to the base during surveying, the communication path with the external communication device is measured. An object of the present invention is to provide a total station and a surveying system capable of continuing communication (data exchange) with this external communication device without hindering work.

[0008]

In order to solve the above problems, the total station and surveying system according to the present invention employ the following means.

That is, the first aspect of the total station of the present invention is an aspect for transmitting an optical signal to the outside, and is a distance measuring means for measuring the distance between the base installed at the measuring point and the measuring object. a device and the body was rotated Re rotatably provided et <br/> the angle measuring device for measuring the angular orientation of the measurement object relative to incorporation the base together, the distance measurement value is ranging by the ranging apparatus and Conversion means provided in the main body for converting an angle measurement value measured by the angle measurement device into an optical signal, and the optical signal converted by the conversion means is substantially parallel to a rotation axis of the main body with respect to the base. Optical signal transmitting means provided in the main body for transmitting in different directions (corresponding to claim 1).

A second mode of the total station of the present invention is a mode for receiving an optical signal from the outside, and includes a base installed at a measuring point and a distance measuring device for measuring the distance to a measuring object. and rotatably provided et the body, an optical signal obtained by converting the program provided in the main body into an electric signal conversion angle measuring device for angular measuring the direction of the measurement object relative to incorporation the base integrally means, characterized in that said <br/> optical signal transmitted from a direction substantially parallel to a rotational axis comprising a light guiding means for guiding said converting means with respect to the base of the body (Corresponding to claim 5).

A first aspect of the surveying system of the present invention is a mode in which an optical signal is transmitted from a total station to an external communication device, and a distance between a base installed at a measuring point and a measuring object is measured. a body has been found rotatably provided an angle measuring device for measuring angular and distance device and the direction to be measured for the built the base together, the distance measurement values and the measurement angle is ranging by the distance measuring device First conversion means provided in the main body for converting an angle measurement value measured by the device into an optical signal,
A total station having an optical signal transmitting means provided in the main body for transmitting the optical signal converted by the converting means in a direction substantially parallel to the rotation axis of the main body with respect to the base, and the optical signal transmitting means Second conversion means for receiving the transmitted optical signal and converting it into an electric signal, and storage means for storing the distance measurement value and the angle measurement value converted into the electric signal by the second conversion means. It is characterized by comprising an external communication device provided (corresponding to claim 3).

A second aspect of the surveying system of the present invention is an aspect in which an optical signal is transmitted from an external communication device to a total station, and storage means for storing information and information stored in this storage means as an optical signal. An external communication device provided with an optical signal sending means for sending, a base installed at a measuring point, a distance measuring device for measuring a distance to a measuring object, and an angle measuring device for measuring a direction of the measuring object. a body which rotatably provided et respect built the base together, and converting means provided in the main body for converting an optical signal transmitted from the optical signal transmitting means into an electrical signal, the said body It is characterized by comprising a total station provided with a light guide means for guiding an optical signal transmitted from a direction substantially parallel to the rotation axis with respect to the base to the conversion means (corresponding to claim 7).

[0013]

Embodiments of the present invention will be described below with reference to the drawings. Before giving a detailed description of each embodiment, the concept of each constituent element of the present invention will be described.

(Conversion means) The conversion means mutually converts an optical signal and an electric signal. This optical signal may be light of a specific wavelength, but it is desirable to use an infrared optical signal so as not to disturb the optical signal (corresponding to claims 9 and 10). Further, in order to eliminate the influence of disturbance, it is desirable that the wavelength band of the optical signal converted by the conversion means is as narrow as possible.

(Optical signal transmitting means, light guiding means) When the light receiving surface / exiting surface of the converting means is oriented in a direction parallel to the rotation axis, the converting means itself or the lens is Although it will function as a light guide, if not, a reflection optical system, a refraction prism, an optical fiber, etc. are used.

The optical signal sending means may send an optical signal on an extension of the rotation shaft of the main body with respect to the base (corresponding to claims 2 and 4). Similarly, the light guide means may guide the optical signal transmitted from an extension of the rotation axis of the main body to the base to the conversion means (claims 6 and 8).
Corresponding to).

(External Communication Equipment) The external communication equipment may itself be a computer. (Storage Unit) The storage unit may be a semiconductor memory such as a volatile memory such as a RAM or a non-volatile memory such as a flash memory, or a disk device such as a hard disk, a floppy disk or a magneto-optical disk. .

(Information) The information transmitted from the external communication device to the total station includes data and programs. As the program, for example, the information is a program for performing data processing on a distance measurement value by the distance measurement device or a distance measurement value by the angle measurement device (corresponding to claims 11 and 12).

[0019]

First Embodiment A first embodiment of the present invention will be described below with reference to the drawings. This embodiment shows an example of a surveying system including a total station and external communication equipment according to the present invention.

<Mechanical Structure of Total Station> FIG. 1
FIG. 3 is a front view showing the appearance of the total station A and the external communication device B. As is apparent from FIG. 1, the total station A includes a main body portion 2, a base portion 3,
The leveling block 4 and the tripod 5 are stacked in this order from the top of the drawing.

The main body 2 has a substantially U-shape, and holds the collimating telescope unit 1 in the U-shaped recess 2a. The collimation telescope unit 1 has a built-in collimation telescope 1a for collimating a prism-equipped target arranged at an angle measurement target point. The collimating telescope 1a also serves as a light-transmitting optical system and a light-receiving optical system for modulated light for lightwave distance measurement. That is,
The collimating telescope unit 1 includes an emitting device for emitting the modulated light, a light receiving device for converting the return light of the modulated light from the target with a prism into an electric signal, and the phase of the modulation and the phase of the returning light at the time of emission. The phase difference detecting device for detecting the phase difference between the two is also integrally provided.

The collimating telescope unit 1 is axially supported in the U-shaped recess 2a of the main body 2 by a shaft 6 and is rotatable in a plane standing up and down along the vertical direction of the drawing. A disk-shaped transparent scale 7a is fixed to the end of the shaft 6.
On the other hand, a detection device 7b for reading the pattern drawn on the transparent scale 7a is fixed in the main body 2. The transparent scale 7a and the detection device 7b constitute an incremental vertical encoder 7, and the number of pulses indicating the relative rotation direction between the collimating telescope section 1 and the main body section 2 is equal to the number of pulses corresponding to the relative rotation angle. Occur.

The base portion 3 is, as shown in the sectional view of FIG.
It has a hollow cylindrical shape. The base part 3 is formed by a shaft 9 oriented in a direction orthogonal to the direction of the shaft 6 to form a main body part 2.
It is axially supported by the bottom surface 2b of the above, and is relatively rotatable within a plane that stands in the left-right direction of the paper. A disc-shaped scale 10a is provided on the upper surface of the base 3. on the other hand,
A detection device 10b for reading the pattern drawn on the scale 10a is fixed in the main body 2. The scale 10a and the detection device 10b constitute the horizontal encoder 10, and the relative angle between the base 3 and the main body 2 is detected.

With the above mechanical construction, the collimation telescope unit 1
Can face any direction with respect to the base part 3. The direction of the collimating telescope at this time is measured by the vertical encoder 7 and the horizontal encoder 10.

As shown in the sectional view of FIG. 2, the leveling block 4 has a hollow cylindrical shape, and the amount of protrusion can be finely adjusted at three positions at equal angular intervals in the circumferential direction. It has a leveling screw 8. By finely adjusting the amount of protrusion of the leveling screws 8, it becomes possible to tilt the leveling block 3 relative to the tripod 5 in an arbitrary direction and angle, and to orient the shaft 9 in the vertical direction. ing.

The tripod 5 is a base for fixing the leveling block 4 to the ground. In FIG. 1, K indicates a pile driven into a measuring point. In order to perform accurate surveying on the point to be measured, the optical center on the machine center of the total station A (emission / reception optical axis extension line with respect to the position of the emitting device and the receiving device in the collimating telescope unit 1) is located above the center of the pile K. Equivalent position, the intersection of the extension line of axis 6 and the extension line of axis 9) must be accurately arranged. Therefore, in the main body portion 2, the centripetal telescope 1 having the optical axis 1 extending from the machine center of the total station A to the ground along the vertical direction.
1 is provided, and the space between the base 3 and the leveling block 4 is configured as a centripetal bearing that is horizontally shiftable with respect to each other.

That is, as shown in the sectional view of FIG. 2, an eyepiece optical system I is fitted in the tip portion of the centripetal telescope 11, and an objective optical system L is fitted in the small-diameter portion thereof. ing. On the object side of the objective optical system L, a reflecting mirror M for fixing the optical axis l of the objective optical system L downward and advancing along the center of the axis 9 is fixed. Since the machine center of the total station A is located on the extension line of this axis 9, if this optical axis 1 coincides with the center of the pile K, the machine center of the total station A is located on the vertical line of the center of the pile K. It will be. Therefore, at the focal position of the objective optical system L, a collimation line showing the optical axis 1 of the objective optical system L is provided (not shown). Then, the operator shifts the base portion 3 with respect to the leveling block 4 while looking at the centripetal telescope 11, and superimposes the center of the pile K on the position of the optical axis l. This is called "centering work".

A prism P for branching the optical axis 1 is installed between the objective optical system L and the eyepiece optical system I in the centripetal telescope 11. The prism P has a cemented surface inclined by 45 ° with respect to the optical axis l, and this cemented surface is a half mirror. An infrared light port 12 is provided on the side of the prism P.

Infrared light port 12 as this conversion means
Is a light emitting diode that emits an infrared light signal (optical signal) and a photodiode that is covered with a filter so as to receive the infrared light signal (optical signal) of the specific wavelength. I have it. This infrared light port 1
The light emitting / receiving surface of No. 2 is arranged at a position deviated from the focus position of the objective optical system L, so that the infrared light signal emitted from the infrared light port 12 is diffused by the objective optical system L. Therefore, the infrared light is emitted over a certain range around the optical axis l, and the infrared light signal emitted from the same range is received by the infrared light port 12. Since the center of the optical path of the infrared light coincides with the optical axis l, that is, the extension line of the axis 9, even if the main body part 2 is rotated with respect to the base part 3, the infrared light is irradiated. The range rarely changes. A reflection mirror M for transmitting the infrared light signal emitted from the infrared light port 12 along the axis 9 and guiding the infrared light signal along the axis 9 to the infrared light port 12, objective optics The system L and the prism P constitute an optical signal sending means and a light guiding means.

<Internal Circuit of Total Station> Next, the internal circuit configuration of the total station A is shown in FIG.
This will be described with reference to the block diagram of FIG. In FIG. 3, the central control unit 18 includes an angle measuring unit 19, a distance measuring unit 20, and an operation display unit 1.
3, a program load area 14, a RAM 15, a program ROM 16, and a serial communication driver 17 are connected.

The distance measuring section 20 is a circuit block which functions as a light wave distance measuring device (distance measuring device). That is, the distance measuring unit 20 includes the emitting device built in the collimating telescope unit 1,
Corresponding to the light receiving device and the phase difference detecting device, the phase difference information detected by the phase difference detecting device is input to the central control unit 18.

The angle measuring section 19 is a circuit block which functions as an electronic theodolite (angle measuring device). That is, the angle measuring unit 19 corresponds to the vertical encoder 7 and the horizontal encoder 10 in FIG. 1, and inputs a pulse generated according to the vertical rotation and the horizontal rotation of the collimation telescope unit 1 to the central control unit 18.

The program ROM 16 has a central controller 18
Various programs required for control in, ie, BIOS
(Basic Input Output System), MS-DOS, etc. O
This is a read-only memory that stores S (Operation System), communication programs, and other control programs.

The program load area 14 is a writable memory for storing an application program (data processing program), and is composed of a flash memory.

The central control unit 18 includes the program ROM 16
The BIOS, OS, and control program stored in the total station A are executed to control the total station A, the distance measurement value is calculated based on the phase difference information from the distance measurement unit 20, and the angle measurement unit 19 is used. The angle measurement value is calculated based on the pulse. Further, the central control unit 18 is a program ROM
The communication program stored in 16 is executed to communicate with the external communication device B via the serial communication driver 17 and the infrared light port 12. Through this communication, the central control unit 18 exchanges data with the external communication device B and downloads an application program stored in the external communication device B. The central control unit 18 also executes an application program (data processing program) stored in the program load area (E ² PROM) to perform data processing based on the measured value.

The RAM 15 is a memory in which various data generated when the program is executed in the central control unit 18, such as a distance measurement value, an angle measurement value, a data processing result, various variables, various constants, various flags, a stack address, etc. are written at any time. is there.

The operation display unit 13 displays the processing result (distance measurement value, angle measurement value, other data processing result) by the central control unit 10.
It is an interface device for displaying operation instructions to the operator and for inputting various data and commands to the central control unit 10. The operation display unit 13 is controlled by the BIOS in the central control unit 18.

The serial communication driver 17 is a parallel / parallel driver provided between the central controller 18 and the infrared light port 12.
It is a serial conversion interface. That is, the serial communication driver 17 is connected to the central control unit 18 via a bus, converts parallel information received via the bus into serial information, transfers the serial information to the infrared light port 12, and transmits red information. The serial information received from the external light port 12 is converted into parallel information and transferred to the central controller 18. In addition, the serial communication driver 17 includes a central control unit 18
Controlled by the BIOS at.

The infrared light port 12 as conversion means connected to the serial communication driver 17 emits an infrared light signal modulated according to the signal from the serial communication driver 17 and receives it from the external communication device B. The infrared light signal is converted into an electric signal and notified to the serial communication driver 17. That is, as long as the external communication device B has the same infrared light port, infrared light communication can be performed with the external communication device B via the infrared light port 12.

<External Appearance of External Communication Device> On the other hand, as shown in FIG. 1, the external communication device B for performing infrared light communication with the total station A has a display section 32, a key input section 33, and an infrared ray on the outer surface thereof. An optical port 31 is provided. The infrared light port 31 as the second conversion means has a function substantially similar to the infrared light port 12 on the side of the total station A, and the infrared light signal transmitted from the infrared light port 12 of the total station A. Can be received and an infrared light signal can be transmitted to the infrared light port of the total station A.

<Internal Circuit of External Communication Device> Next, the configuration of the internal circuit of the external communication device B will be described with reference to the block diagram of FIG. In FIG. 4, the infrared light port 31 is connected to the central processing unit 34 via the communication control unit 35. A program ROM 37, a data memory unit 38, and a RAM 39 are connected to the central processing unit 34 in addition to the display unit 32 and the key input unit 33 described above.

The power supply unit 36 is a circuit that supplies drive power to the entire circuit. The communication control unit 35 is a serial / parallel interface having the same function as the serial communication driver 17 on the total station A side.

The program ROM 37 includes various programs required for control in the central processing unit 34, that is, BI.
The read-only memory stores an OS (Basic Input Output System), an OS (Operation System) such as MS-DOS, a communication program, a data processing program, and other control programs.

The central processing unit 34 is a program ROM
The BIOS, OS, and control program stored in 37 are executed to control the entire external communication device B. Then, the communication program stored in the program ROM 37 is executed to communicate with the total station A via the infrared light port 31, and the received data (distance measurement value, measurement value, etc.) is written in the data memory unit 38. Further, the central processing unit 34 executes the data processing program stored in the program ROM 37 to perform the data processing on the data written in the data memory unit 38 and displays the data processing result on the display unit. 32 is displayed.

The RAM 15 is a memory in which various data generated when the program is executed in the central processing unit 34 is written at any time.

<Communication Processing> Next, the contents of the processing executed respectively by the central control unit 18 of the total station A and the central processing unit 35 of the external communication device B will be explained, and the procedure of data transfer between them will be shown. . This description is based on the premise that data processing (pile measurement) is performed on the external communication device B side without performing data processing on the distance measurement value and the angle measurement value on the total station A side.

[Processing on the Total Station Side] FIG.
4 is a flowchart showing an outline of processing executed by the central control unit 18 of the total station A. This process starts when the total station A is turned on. Then, initial setting is performed in the first S01. That is, the constants (atmospheric pressure value, temperature value, prism constant) necessary for surveying are input.

At the next step S02, the serial communication driver 1
The BIOS for 7 is activated and the infrared light port 12 is set to a usable state. In the next step S03, the communication program is activated to execute the communication protocol through the infrared light port 12. If the external communication device B cannot be recognized as a result of executing this communication protocol, the communication protocol execution of S03 is repeated, but if the external communication device B can be recognized, the process can proceed to the next (S04).

At the next step S05, it is checked whether or not distance measurement is to be performed. This check is performed according to an instruction from the operator input through the operation display unit 13. If distance measurement is not performed, the process proceeds directly to S07. However, if distance measurement is performed, distance measurement is performed in the next S06, the distance measurement result is temporarily stored in the RAM 15, and then the process proceeds to S07. .

In S07, it is checked whether or not the angle measurement is performed. This check is also performed according to an instruction from the operator input through the operation display unit 13. If the angle measurement is not performed, the process directly proceeds to S09. However, if the angle measurement is performed, the angle measurement is performed in the next S08, the angle measurement result is temporarily stored in the RAM 15, and then the process proceeds to S09. .

In S09, the data (distance measurement value, angle measurement value) temporarily stored in the RAM 15 is transmitted to the serial communication driver 17. Then, this data is converted into a serial signal by the serial communication driver 17 and sent out from the infrared light port 12 as an infrared light signal.

At the next step S10, it is checked whether or not the surveying is completed. This check is performed depending on whether or not the end of surveying is input through the operation display unit 13. Then, when the end of surveying is not input, the processing is S05.
If the end of surveying is input, the process proceeds to S11. In S11, the end code is transmitted to the serial communication driver 17. Then, this end code is transmitted as an infrared light signal from the infrared light port 12 as in the case of data. With the above, the processing of the total station A is completed.

[Processing on External Communication Device Side] On the other hand, FIG.
7 is a flowchart showing an outline of processing executed by a central processing unit 34 of the external communication device B. This process is started by turning on the power from the power supply unit 36 to the circuit. Then, in the first S21, it is checked whether or not the communication mode is set. This check is performed according to the instruction from the operator input through the key input unit 33. That is, since the external communication device B can sort the accumulated data after the survey and can perform various data processing, in the first step, it is linked to the total station A by communication whether it is the mode to be used alone. It is checked whether it is the mode for processing. Then, if it is determined that the communication mode is not set, another process is executed in S30 and the process ends.

On the other hand, when the communication mode is set, the infrared light port 31 is set in S22, and the total station A is set in S23 and S24.
Execute the communication protocol until it can recognize. These processes are the same as the processes of S02 to S04 in FIG.

In next step S25, it is checked whether or not the end code transmitted in step S11 of FIG. 5 is received via the infrared light port 31. If the end code is not received, it is checked in S26 whether the data (distance measurement value, angle measurement value) transmitted in S09 of FIG. 5 is received via the infrared light port 31. Then, if the data has not been received yet, the process proceeds to S2.
Return to 5 and repeat the check.

When the data is received in S26, the received data is stored in the data memory unit 38 in S27. Then, in the next S28, it is checked whether or not the data processing for the stored data is executed. Whether or not this data processing is executed and which data processing is executed depend on an instruction from the operator input via the key input unit 33. Examples of this data processing include stakeout measurement for calculating the difference between the distance measurement values with respect to the set distance, and traverse survey calculation for obtaining the plane position of the measurement point from the distance measurement value and the angle measurement value. Here, it is assumed that pile driving measurement is performed.

FIG. 7 is a flow chart showing a data processing program for this stakeout measurement. In this data processing program, in the first step S31, the set distance value to the point at which the pile is driven is input. This set distance value is input through the key input unit 33, but once input, R
Written to AM39. Therefore, the set distance value written in the RAM 39 is read and input to the central processing unit 34 until a new set distance value is input. In the next S32, the data memory unit 3 in S27.
The latest distance measurement value stored in 8 is read out. And the next S
In 33, the difference between the set distance input in S 31 and the distance measurement value read in S 32 is calculated, and the calculated value is displayed on the display unit 32. As described above, the stakeout measurement program is terminated, and the process returns to FIG.

In FIG. 6, when S29 is completed, the process proceeds to S2.
Return to 5 and wait for the next data reception or end code reception,
When the end code is received, the process ends from S25.

<Operation of the Embodiment> The work for performing the applied survey using the total station A of this embodiment is as follows. That is, before the survey is performed, communication with the external communication device B by infrared light is performed, and necessary data is RA
The data processing program which is stored in M15 and can be executed on the total station A is downloaded to the program load area 14.

At the surveying site, the total station A is set up on the pile K which is driven into a predetermined measuring point. And
The leveling screw 8 of the leveling block 4 is properly adjusted to orient the shaft 9 in the vertical direction. Next, while looking through the centripetal telescope 11, the base part 3 is shifted in the horizontal direction with respect to the leveling block 4 to perform centripetal work.

After the above settings are completed, both the total station A and the external communication device B are turned on and the programs shown in FIGS. 5 and 6 are executed. Even if these programs are executed, if the external communication device B is separated from the total station A, both cannot recognize each other, and therefore surveying and communication cannot be started. However, the external communication device B is replaced by a centripetal telescope 11 as shown in FIG.
If they are arranged on the optical axis l, the two can recognize each other regardless of the direction in which the main body 2 faces, and it is possible to perform surveying and communication between the two.

When the measurement is carried out thereafter, the distance measurement value and the angle measurement value are sent out as an infrared light signal from the infrared light port 12 of the total station A and are received by the infrared light port 31 of the external communication device B. It Therefore, the distance measurement value and the angle measurement value are transferred to the external communication device B at any time without the communication between the total station A and the external communication device B hindering the surveying work. To be done.

In this embodiment, since the infrared light signal is used for communication, there is no adverse effect on the data due to the disturbance as in the case of using radio waves. Further, the infrared light signal has a higher visibility than radio waves, but the center of the optical path of the infrared light from the total station A is on the extension line of the rotating shaft 9 of the main body 2, so that the extension is external to this extension line. As long as the communication device B is arranged,
No matter which direction the main body 2 to which the infrared light port 12 is attached faces, the infrared light signal can always be received between them.

[0064]

[Second Embodiment] A second embodiment of the present invention will be described below.
The second embodiment is different from the first embodiment in the configuration of the external communication device B ′.

As shown in FIG. 8, this external communication device B '
Then, the infrared light port 41 is not provided in the case of the external communication device B ′, but is fixed on the arm 44 extending from the side surface to the side surface of the casing of the external communication device B ′. The casing itself of the external communication device B ′ is attached to any one of the three legs of the tripod portion 5 of the total station A. This attachment is done by Veloclo ™.

Then, when the casing of the external communication device B'is attached to the leg of the tripod portion 5, the arm 44 is arranged so that the infrared light port 44 on the arm 44 is located in the optical axis l.
The length and angle are adjustable.

According to the second embodiment, in addition to having all the operations according to the first embodiment described above, the external communication device B'can be fixedly arranged, so that the total station A can be moved even when the measuring point is moved. The external communication device B ′ can be carried together.

[0068]

According to the total station or surveying system of the present invention constructed as described above, no matter which direction the total station body is rotated with respect to the base during surveying, the communication path with the external communication device is obtained. Does not interfere with the surveying work, and it is possible to continue communication (data exchange) with this external communication device.

[Brief description of drawings]

FIG. 1 is a front view showing the outer appearance of a surveying system according to a first embodiment of the present invention.

FIG. 2 is a partial cross-sectional view showing the arrangement of a centripetal telescope and an infrared light port of the total station shown in FIG.

FIG. 3 is a block diagram showing an internal circuit of the total station shown in FIG.

FIG. 4 is a block diagram showing an internal circuit of the external communication device of FIG.

5 is a flowchart showing the contents of processing executed by the central control unit of FIG.

FIG. 6 is a flowchart showing the contents of processing executed by the central processing unit of FIG.

FIG. 7 is a flowchart showing a stakeout measurement program that is executed by interruption from S29 in FIG.

FIG. 8 is a front view showing the outer appearance of a surveying system according to a second embodiment of the present invention.

[Explanation of symbols]

1 Collimation telescope section 2 body 11 centripetal telescope 12 infrared light port 15 RAM 18 Central control unit 19 Angle measuring section 20 Distance measuring unit 31 infrared light port 34 Central processing unit 38 Data memory section A total station B External communication equipment L objective optical system

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Claims (12)

(57) [Claims] 1. A base installed at a measuring point, a distance measuring device for measuring a distance to a measuring object, and an angle measuring device for measuring a direction of the measuring object are integrally incorporated and rotated with respect to the base. a body provided et the freely, the converting means provided in the body to convert the measured angle values angle measuring by the distance measurement has been measured distance and the angle measuring device by the distance measuring device to an optical signal, A total station, comprising: an optical signal transmitting means provided in the main body for transmitting the optical signal converted by the converting means in a direction substantially parallel to a rotation axis of the main body with respect to the base. 2. The total station according to claim 1, wherein the optical signal transmitting means transmits the optical signal on an extension line of a rotation shaft of the main body with respect to the base. 3. A base installed at a measuring point, a distance measuring device for measuring a distance to a measuring object, and an angle measuring device for measuring a direction of the measuring object are integrally incorporated and rotated with respect to the base. a body provided et the freely, first conversion provided in the body to convert the measured angle values angle measuring by the distance measurement has been measured distance and the angle measuring device by the distance measuring device to an optical signal Means and an optical signal transmitting means provided in the main body for transmitting the optical signal converted by the converting means in a direction substantially parallel to the rotation axis of the main body with respect to the base, and the optical station Second conversion means for receiving the optical signal sent by the sending means and converting it into an electric signal, and storing for storing the distance measurement value and the angle measurement value converted into the electric signal by the second conversion means. And an external communication device equipped with A surveying system characterized by: 4. The surveying system according to claim 3, wherein the optical signal transmitting means transmits the optical signal on an extension line of a rotation axis of the main body with respect to the base. 5. A base installed at a measuring point, a distance measuring device for measuring a distance to a measuring object, and an angle measuring device for measuring a direction of the measuring object are integrally incorporated and rotated with respect to the base. a body provided et the freely, the converting means provided in the main body for converting an optical signal obtained by converting the program into an electric signal, transmitted from a direction substantially parallel to the rotational axis relative to the base of the body A light guide means for guiding the optical signal to the conversion means. 6. The total station according to claim 5, wherein the light guiding means guides the optical signal transmitted from an extension of a rotation axis of the main body to the base to the converting means. 7. An external communication device comprising a storage means for storing information, and an optical signal transmission means for transmitting the information stored in the storage means as an optical signal, and a base installed at a measuring point. a body which rotatably provided et the distance measuring apparatus and an angle measuring device for angular measuring the direction of the measurement object relative to incorporation the base together to ranging the distance to the measurement object, from the light signal transmitting means Conversion means provided in the main body for converting the transmitted optical signal into an electric signal, and guiding the optical signal transmitted from a direction substantially parallel to the rotation axis of the main body with respect to the base to the conversion means. A surveying system comprising a total station equipped with light guiding means. 8. The surveying system according to claim 7, wherein said light guiding means guides an optical signal transmitted from an extension of a rotation axis of said main body to said base to said converting means. 9. The total station according to claim 1, 2, 5, or 6, wherein the optical signal is an infrared optical signal. 10. The surveying system according to claim 3, 4, 7, or 8, wherein said optical signal is an infrared optical signal. 11. The optical signal is obtained by converting a program for performing data processing on the distance measurement value by the distance measurement device and the angle measurement value by the angle measurement device. Total station described. 12. The program according to claim 7, wherein the information is a program for performing data processing on the distance measurement value by the distance measurement device and the angle measurement value by the angle measurement device.
The surveying system described.