JP2001227951A - Pole for surveying, and holding device of mobile station antenna pole for gps surveying - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically vertically hold a pole in surveying work. SOLUTION: An arm (threaded rod 31) is projected from a main body 2 mounted on a tripod support 1, a driving controlling mechanism for moving and controlling the arm by a polar coordinate system is mounted in the main body, a pole holding part (holding body 4) is mounted on a tip part of the arm, a sensor (mechanism 5) is mounted on the pole for detecting an inclination angle of the pole and outputting a detection signal, and the driving controlling mechanism is controlled on the basis of the detection signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a survey pole and a GPS.
The present invention relates to a holding device that enables automatic vertical adjustment of a surveying mobile station antenna pole.

[0002]

2. Description of the Related Art In surveying, it is necessary to hold a surveying pole and a GPS surveying mobile station antenna pole at a measuring point in a highly accurate and stable vertical state.

Conventionally, these surveying poles have been set on a holder attached to a tripod or bipod leg and manually adjusted for tilting so as to erect the pole vertically (Japanese Patent Laid-Open No. 7-1995). 139948). Specifically, the worker first sets a tripod or a tripod in accordance with the measuring point that erects the pole, and shifts the position of the tripod while looking at the bubble tube attached to the survey pole, Change the length and opening angle of the foot, adjust the position of the pole support rod, adjust the relative positional relationship between the legs and the pole holder, and adjust the pole holding posture to the pole holding part. By adjusting the pole, the pole stands upright.

[0004] However, since the above-mentioned adjustment is performed manually, accurate vertical erecting of the pole is a complicated operation. In particular, because the confirmation of horizontal or vertical is based on visual confirmation of the bubble tube,
Errors due to the visual sense of the adjustment operator are likely to occur. For this reason, the skill of the operator depends on ensuring the accuracy.

[0005] In particular, when performing GPS measurement, the observation time may be several minutes depending on the local situation, and it is necessary for the on-site worker to repeatedly perform work that requires concentration to maintain a stable vertical state. And the work is hard and the accuracy also varies. In addition, since the measurement is performed manually, the pole may not be noticed during measurement due to carelessness or wind.

In view of the above-mentioned problems, the present invention proposes a pole holding device for automatically and vertically erecting a surveying pole and a GPS surveying mobile station antenna pole at a measuring point.

[0007]

According to the present invention, there is provided a surveying pole and a GPS surveying mobile station antenna pole holding device, wherein an arm is protruded from a main body provided on a tripod support, and the arm is provided in the main body. A drive control mechanism for performing movement control in a polar coordinate system is provided, a pole holding portion is provided at the tip of the arm, and a sensor is attached to a separate pole for detecting a pole inclination angle and outputting the detection signal. The drive control mechanism of the arm is controlled based on the detection signal.

When the tripod is opened, the pole is supported by the pole holding portion at the tip of the arm, and the pole is erected at a predetermined position. If the pole is not vertically erected, the inclination is detected by a sensor. The pole is raised vertically by horizontal rotation and forward / backward movement of the arm based on the detection signal. Then, the reference known point at the time of surveying and the longitude and latitude of the point by GPS are measured.

[0009]

Next, an embodiment of the present invention will be described. The holding device shown in the embodiment includes a tripod support 1, a main body 2 internally provided with an arm drive control mechanism, an arm mechanism 3 attached to the main body 2, and a pole holder 4 provided at a tip of the arm mechanism 3. And a sensor mechanism 5 mounted on the pole.

The tripod support 1 has three legs capable of adjusting the expansion and contraction and opening angle to support the leg head, and adjusts the expansion and contraction of the tripod with respect to an inclined ground to make the head surface substantially horizontal. Things.

The main body 2 includes a base portion 21 connected to the tripod head, an arm mounting portion 22 provided on the base portion 21 so as to be rotatable in a vertical axis direction, and an arm mounting portion 22 provided on the base portion 21. A rotation drive control section 23 for rotating the arm mechanism, an advance / retreat drive control section 24 attached to the arm mounting section 22 to advance / retreat the arm mechanism 3, and a control section 25 for controlling the operation of the control sections 23 and 24. It consists of.

An arm mounting section 22 is rotatably provided on the base section 21. The operation of the arm mounting section 22 is controlled by a rotation drive control section 23. Specifically, the arm mounting unit 2
2, a worm gear 231 is formed on the outer periphery of the base portion 21.
The driving force of the drive motor 232 provided above is transmitted to the drive shaft 233 and the worm 234 provided on the drive shaft 233 via an appropriate speed reduction mechanism.
To work.

The arm mounting section 22 is provided with an arm mechanism 3 and an advance / retreat drive control section 24 for controlling the advance / retreat operation of the arm mechanism 3. The arm mechanism 3 is provided with two screw rods 31 provided in parallel. The guide rod 32 has three ends connected by a fixing plate 33 and penetrates through the arm mounting portion 22.
Further, the advance / retreat drive control unit 24 connects the drive gear 242 to the drive motor 241, and meshes the drive gear 242 with the outer peripheral portion of the transmission gear 243 through which the screw rod 31 is screwed through the shaft center. .

The control unit 25 includes an external input unit and an internal processing unit that receives a sensor unit detection signal (including a pole inclination angle calibration process) described later. When a predetermined signal is received, the control unit 25 automatically operates. A processing function (configured with a CPU or the like) for determining the amount and controlling the operation amount of both drive control units 23 and 24 is provided.

The pole holder 4 comprises a joint portion 41 and a pole holding portion 42. The joint portion 41 is connected to the distal end fixing plate 33 of the arm mechanism 3 so as to be freely rotatable about the axis of the arm movement direction. Further, the connecting portion is provided with a shaft that can freely rotate with the axis of movement in the reciprocating direction and an axis orthogonal to the pole axis direction of the holding pole, and is formed as a biaxial joint that is rotatable with respect to the shaft. Become. Further, the pole holding portion 42 is configured to securely hold the pole A.

The sensor mechanism 5 includes a ruler main body 51, a holding section 52, and a sensor section 53. Ruler body 5
Reference numeral 1 denotes a shape that follows the pole A and has a structure in which the contact surface is formed as a V-shaped groove 511 so as to correctly follow the pole A. Holder 52
Is provided so as to protrude from the main body portion 51 and clamp the pole A to fix the main body portion 51 at a predetermined position of the pole A. The sensor unit 53 detects the tilt state by a combination of a tilt state sensor, for example, a tilt sensor in a biaxial direction orthogonal to the horizontal plane, and sends the detected value to a control processing unit of the drive control units 23 and 24 by an electric signal. It is.

Next, a case where the pole holding device is used for a pole A standing at an observation point B will be described. The tripod 1 is opened in the vicinity of the observation point B, and the pole A is held by the pole holding unit 42 to stand on the observation point B. Further, a sensor mechanism 5 is mounted at an appropriate position of the pole A.

First, the pole A is slightly twisted, and the detection of the inclination is repeated several times during one rotation of the pole to recognize the inclination state of the pole (so-called calibration is performed). The drive control units 23 and 24 are operated based on the pole inclination detection signal of the unit 53. That is, in the rotation drive control unit 23, the rotation of the worm 234 rotates the arm mounting unit 22 on the base unit 21 to determine the direction in which the arm mechanism 3 moves forward and backward (polar coordinate system θ). Screw rod 3 with forward / reverse rotation of 243
1 determines the protruding position (polar coordinate system R) of the pole holder 4 by performing the forward / backward operation.

Therefore, the respective drive control units 23 and 24 operate based on the detection signal from the sensor unit 53, and the sensor unit 53
Then, the operation is stopped in the horizontal state, that is, the vertical state of the pole, and the pole A is correctly placed on the observation point B without leaving the observation point B.

At the time of surveying, the pole is correctly and automatically brought into the vertical state quickly, so that the base line between the pole position and the distance measuring position can be easily established. Even if the error occurs, it is automatically corrected immediately.

If a biaxial joint is employed for the joint portion 41 of the pole holder 4 so as to cope with the above-described rotation operation and forward / backward operation, the pole can be smoothly moved vertically.

It goes without saying that the present invention can be used not only for surveying poles but also for GPS mobile station antenna poles during GPS surveying work.

[0023]

As described above, according to the present invention, an arm is projected from a main body provided on a tripod support, and a drive control mechanism for controlling the movement of the arm in a polar coordinate system is provided inside the main body. A pole holding portion provided at the tip of the arm, separately attached to a pole to detect a pole inclination angle, and a sensor that outputs the detection signal, and controls the arm drive control mechanism based on the detection signal of the sensor. With a holding device such as a surveying pole, the pole can be automatically held vertically, thereby improving the efficiency of the surveying work.

[Brief description of the drawings]

FIG. 1 is an overall front view of an embodiment of the present invention.

FIG. 2 is a plan view of the main part.

FIG. 3 is an explanatory diagram of a reciprocation drive control unit and a pole holder.

FIG. 4 is an explanatory view (front view) of the sensor mechanism.

FIG. 5 is an explanatory view (plan view) of the sensor mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tripod 2 Main body 21 Base part 22 Arm mounting part 23 Rotation drive control part 231 Worm gear 232 Drive motor 233 Drive shaft 234 Worm 24 Advance / retreat drive control part 241 Drive motor 242 Drive gear 243 Transmission gear 25 Control part 3 Arm mechanism 31 Screw rod 32 Guide rod 33 Fixing plate 4 Pole holder 41 Joint part 42 Pole holder 5 Sensor mechanism 51 Ruler body 52 Holder 53 Sensor

Claims (4)

[Claims] An arm protrudes separately from a main body provided on a tripod support, a drive control mechanism for controlling movement of the arm in a polar coordinate system is provided in the main body, and a pole holding part is provided at a tip of the arm. A survey pole provided with a sensor for separately detecting a pole inclination angle by attaching to a pole and outputting the detection signal, and controlling a drive control mechanism of the arm based on the detection signal of the sensor. Holding device for mobile station antenna pole for GPS surveying 2. The mounting of the pole holding part on the tip of the arm,
2. A biaxial joint which is freely rotatable about an arm reciprocating direction axis and is freely rotatable about an axis orthogonal to the reciprocating direction axis and a pole axis direction of the holding pole. Surveying pole and G
PS surveying mobile station antenna pole holding device 3. An apparatus according to claim 1, wherein the inclination angle detection sensor is a two-axis tilt sensor crossing in the orthogonal direction. 4. A main body section having a rotation drive control section and an arm mounting section rotated by the rotation drive section, the arm being incorporated in the arm mounting section so as to be movable forward and backward, and an arm advance / retreat drive control section being provided. 4. A surveying pole and a GPS surveying mobile station antenna pole holding apparatus according to claim 1, wherein: