JPS62273448A - Ultrasonic probe position detector - Google Patents

Abstract

PURPOSE:To detect the polar coordinate position of an ultrasonic probe and the direction of oscillating thereof with two wire winding mechanisms. CONSTITUTION:A body 6 incorporating a linear direction detecting section and a direction of rotation detecting section is mounted on an object 1 to be inspected using a magnet 5. To detect the linear direction, the linear direction detecting section checks pulls R1 and R2 of two wires 14 and 15 as caused by two wire winding pulleys and a plate spring not illustrated. To detect the direction of rotation, the body 6 is turned to check the relative rotation theta between the magnet 5 and body 6 with a rotation detector. With the detection of the amount of two wire pulls R1 and R2 and the rotation theta, the detection of the direction alpha of the probe 2 oscillates can be done from the polar coordinate position of the probe 2 and a difference between two wire pulls.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an ultrasonic probe position detection device, and particularly to a device for detecting the swing direction and position of an ultrasonic probe. The present invention relates to an ultrasonic probe position detection device suitable for detecting.

[Conventional technology]

Conventional ultrasonic probe position detection devices place emphasis on reliability and adopt a strip type as shown in Figure 2 (Hitachi Product Catalog, No. ED-503, R-θ Manual Scanner ).

However, no consideration was given to the swinging scan of the probe.

A conventional device will be explained with reference to FIG.

In FIG. 2, the conventional device has a magnet 5 attached to a subject 1.
Attach the main body 6 with
It was designed to detect the movement of the probe in two axes: linear and rotational.

[Problem that the invention seeks to solve]

In the case of the above-mentioned conventional technology, in the case of an angle probe, etc., the direction of the probe is fixed in the tangential direction or perpendicular direction of the rotation axis, so that sufficient ultrasonic flaw detection cannot be performed using an angle probe or the like. There was a problem.

The above will be explained with reference to FIG.

In the case of angle flaw detection, the ultrasonic beam 22 is generally directed in a direction perpendicular or parallel to the weld line 24, and the probe 2 is scanned in a rectangular shape. In the case of the prior art, since the probe is fixed only in R-θ scanning, the direction of the ultrasonic beam 22 changes as the probe scans. In other words, in the case of oblique flaw detection, in addition to the R-0 scan, an oscillation scan of the probe is required. In addition, in the case of oblique flaw detection, in order to find defects in all directions, the ultrasonic beam may be incident obliquely to the weld line. Even in such a case, the oscillation scanning of the probe is effective.

SUMMARY OF THE INVENTION An object of the present invention is to provide an ultrasonic probe position detection device that includes two wire winding mechanisms and is capable of swing scanning and detection using an angle probe or the like.

[Means for solving problems]

As mentioned above, there was a need for an ultrasonic probe position detection device that could also perform swing scanning and detection using an angle probe, but no means for practical use had been invented. .

The above object is achieved by providing two wire winding mechanisms that combine a wire and a leaf spring.

[Effect]

It operates to detect the position of the probe using a wire winding mechanism that combines a wire and a leaf spring. Further, the probe swing direction is detected based on the difference in detection amount between the two wire winding mechanisms.

Thereby, the position of the probe and the direction of probe swing can be detected.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1, 4, and 5. FIG. 1 shows an ultrasonic probe position detection device which adds a rotation detection mechanism to the present invention and makes it possible to detect the polar coordinate position and the amount of probe swing.

Figure 4 shows details of the mechanism. Figure 5 shows the calculation.

The output circuit configuration is shown.

In FIGS. 1, 4, and 5, a main body 6 is attached to the subject 1 using a magnet 5.

The main body 6 has two linear direction detection sections and a rotational direction detection section. The linear direction detection section has wire winding pulleys 8, 9 and leaf springs 10.11 for winding the wire, and the signals from the detectors 12.13 are sent to the wire pullout amount detector circuit 17.
The structure is such that it is detected at 18. Detection of rotation direction is
The main body 6 is rotated by the tension of the wires 14 and 15, and the relative rotation between the magnet 5 and the main body 6 is detected by the detector 7 and the rotation amount detection circuit 19. The three detected amounts and the data of the ultrasonic flaw detector 16 are calculated by an arithmetic circuit 20 and outputted by an output circuit 21.

According to this embodiment, there are two wire withdrawal amounts Rt.

By detecting R2 and the rotation amount θ, it becomes possible to detect the probe swing direction α based on the polar coordinate position of the probe and the difference between the two wire withdrawal amounts.

〔Effect of the invention〕

According to this embodiment, it is possible to detect the polar coordinate position of the ultrasound probe and the probe swing direction.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an ultrasonic probe position detection device according to an embodiment of the present invention, FIG. 2 is a perspective view of a conventional strip-type ultrasonic probe position detection device, and FIG. 3 is a perspective view of a conventional band-type ultrasonic probe position detection device. FIG. 4 is a detailed view of the mechanism according to the present invention, and FIG. 5 is a diagram showing the configuration of an arithmetic output circuit. DESCRIPTION OF SYMBOLS 1... Subject, 2... Ultrasonic probe, 3... Holder, 4... Band plate, 5... Magnet, 6... Main body,
7...Detector, 10.11...Plate spring, 12.13.
...Detector, 14°15...Wire, 16...Ultrasonic flaw detector, 19...Rotation amount detection circuit, 20...Arithmetic circuit, 21...Output circuit, 22...Extra sonic beam,
23... Probe scanning direction, 24... Welding line. Agent Patent Attorney Katsuma Ogawa ′ 1 口 15-m-Wire 2 Kasumi 3 [ID (b) Z. Mu Chiang map

Claims (1)

[Claims] 1. In an ultrasonic probe position detection device using wire winding, two wires are connected to the ultrasonic probe,
An ultrasonic probe position detection device characterized in that each wire is provided with a position detection mechanism to enable swing scanning and detection of the probe.