JP2000057311A - Image reading device such as watt hour meter nameplate - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To prevent the occurrence of halation, shadows, uneven illumination, and reflection of a camera, and to read the characters on the nameplate and the readings of the measuring unit accurately. To provide an image reading device. SOLUTION: The diffused light is transmitted to multiple reflection surfaces 22A to 22D and 2D.
The imaging surface 1A is irradiated with the reflected light reflected by 3A to 23D,
The camera 4 is arranged at a predetermined angle θ with respect to a perpendicular to the photographing surface 1A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a watt hour meter (work)
The invention relates to an image reading device such as a wattmeter nameplate for reading an image of a nameplate or the like, and in particular, a character on the nameplate and a measuring unit (rotation instruction unit).
The present invention relates to an image reading device such as a watt-hour meter name plate capable of accurately reading the indicated value of (1).

[0002]

2. Description of the Related Art It is legally required that a watt-hour meter be inspected and repaired every ten years, and each time it is removed from a customer and returned to a factory. At this time, it is necessary to manage the information of the watt-hour meter, and for that purpose, the characters on the nameplate and the indicated value of the measuring unit are read.

At present, the reading of the characters on the nameplate and the indicated value of the weighing unit is performed by human eyes. However, since the number of works is enormous and the work is complicated, automation of this work is demanded.

Therefore, recently, in order to respond to such a demand, the light meter irradiates the watt hour meter with light, and the camera uses the image of the watt meter, that is, the image of the nameplate and the image of the indicated value of the measuring unit. An image reading device such as a watt-hour meter plate for reading an image is being developed.

[0005]

However, according to the image reading device such as the watt-hour meter name plate described above, the watt-hour meter name plate is easily reflected by the influence of the material and the surface treatment. Cause halation,
The camera may be reflected on the nameplate. As a result, the characters on the nameplate and the indicated value of the measuring section cannot be read accurately.

[0006] Further, since the measuring unit of the watt-hour meter is located in the window frame of the nameplate, a shadow is easily generated and image information is lost. As a result, the characters on the nameplate and the indicated value of the measuring section cannot be read accurately. Further, when the imaging surface of the watt-hour meter is directly illuminated by the light source device, unevenness of the illumination occurs on the imaging surface unless the shape and arrangement of the light source device are modified.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to prevent the occurrence of halation, reflection of a camera, shadows, and uneven illumination, and to accurately read the characters on the nameplate and the indicated values of the measuring unit. And the like.

[0008]

According to the present invention, there is provided a camera for photographing a photographing surface, such as a watt hour meter.
Light source means provided at a position not directly irradiating the imaging surface and emitting light emitted from a linear light source or a point light source as diffused light; and reflecting the diffused light emitted from the light source means to diffuse the light to the imaging surface. It is an object of the present invention to provide an image reading device such as a wattmeter nameplate provided with reflecting means for irradiating light and camera supporting means for supporting the camera at a predetermined angle with respect to the photographing surface.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an image reading apparatus such as a wattmeter nameplate according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows an image reading device such as a watt-hour meter plate according to a first embodiment of the present invention. An image reading device such as a watt-hour meter plate includes a work positioning mechanism 2 for positioning the watt-hour meter 1 at a predetermined position with a name plate (described later) of the watt-hour meter (work) 1 facing upward, Two light source devices (described later) are disposed symmetrically on both sides of the total 1 and emit diffused light upward, and are disposed above the wattmeters 1 and 2 light source devices and emitted from the light source devices. A reflector plate set 3 for reflecting the diffused light and irradiating the watt-hour meter 1 so as to be shadowless, and a name plate image of the watt-hour meter 1 supported on the watt-hour meter 1 by the camera support mechanism 5, ie, a name plate , And a power meter 1 and a housing 6 surrounding the camera 4.

The work positioning mechanism 2 includes a bottom surface 6 of the housing 6.
A fixed plate 8 which is horizontally supported on a bottom surface 6A by four columns 7 provided on A and has a handle 9A and on which a work table 9 on which the watt-hour meter 1 is fixed is placed, and A pair of L-shaped bearing members 10 provided on both sides of the fixing plate 8 are rotatably supported by the pair of bearing members 10, and a roller 11 is provided substantially at the center and a thread groove is formed on the peripheral surface. Rotating shaft 12 and guide shaft 13 fixed to a pair of bearing members 10 in parallel with rotating shaft 12.
And a pair of sliders 14 which are screwed into the screw grooves of the rotating shaft 12 and through which the guide shaft 13 penetrates, and which are moved in the X-axis direction with the rotation of the rotating shaft 12, and provided on the upper inside of the pair of sliders 14, respectively. The work holder 15 that contacts the watt-hour meter 1 by moving the pair of sliders 14 toward the center and positions the watt-hour meter 1 in the X direction.
And a work stopper 16 provided at a far end on the fixed plate 8 for positioning the watt-hour meter 1 in the Y-axis direction by abutment of the work table 9, and a rotating shaft 12 on the floor surface 6 </ b> A. A pair of bearing members 19 provided on the front side and rotatably supporting a rotating shaft 18 having rollers 17.
, A belt 20 stretched between the rollers 11 and 17, and an operation handle 2 for rotating the rotating shaft 18.
1.

The reflecting plate set 3 includes four trapezoidal reflecting plates 22A, 22B, 22C, and 22D (not shown) arranged at predetermined angles corresponding to the respective inner surfaces of the housing 6.
And four reflecting surfaces 23A, 23B, 2 arranged above the four reflecting plates 22A, 22B, 22C, 22D and arranged at predetermined angles corresponding to the respective inner side surfaces of the housing 6.
It is composed of a reflector 23 having 3C and 23D.
The reflecting plate 23 has a window 24 so that the camera 4 can read the image of the nameplate of the watt-hour meter 1 through the window 24.

The camera support mechanism 5 includes a Y-axis moving table 26 provided above the fixed rod 25, an X-axis moving table 27 provided on the Y-axis moving table 26 so as to be movable in the Y-axis direction, A Z-axis moving table 28 movably mounted in the X-axis direction on the axis moving table 27, and a camera support member 29 mounted on the Z-axis moving table 28 movably in the Z-axis direction and supporting the camera 4. , So that the camera 4 can read the image of the nameplate of the watt-hour meter 1 at a predetermined position.
And positioning in the Z direction.

FIG. 2 shows the details of the light source device and the reflector plate set 3. In FIG. 2, the same parts as those in FIG. 1 are denoted by the same reference numerals, and duplicate description is omitted, but a light source device 30 that emits diffused light upward is provided on both sides of the fixed plate 8. And the light source device 30 is
The power meter 1 is illuminated with light via the. The four reflection plates 22A, 22B, 22C, 22D and the reflection plate 23 of the reflection plate set 3 are constituted by a metal plate, a synthetic resin plate, a paper plate, etc., which have been subjected to a matte surface treatment or matte coating. The reflecting plate 23 includes two fixing rods 34 fixed to the housing 6.
Supported by

FIG. 3 shows the watt-hour meter 1, the reflector set 3, the camera 4, the light source device 30, and the like described in FIG. In FIG. 3, the same parts as those in FIGS. 1 and 2 are indicated by the same reference numerals, and duplicate description will be omitted. Here, the light source device 30 is disposed below the nameplate 1A of the watt-hour meter 1 and has a fluorescent lamp 31 having a length greater than the length of the watt-hour meter 1 in a direction perpendicular to the plane of the drawing, and To protect and
A case 32 for reflecting the emitted light in the direction of the reflection plates 22B and 22C, and a diffusion filter plate 33 covering the opening surface of the case 32
It is composed of The fluorescent lamp 31 is driven at a high frequency to prevent flicker, and the diffusion filter plate 33 is suitably a milky white acrylic plate, a ground glass plate, Japanese paper, tracing paper, or the like. The reflection plates 22B and 22C are mounted at an angle θ ₁ with respect to the perpendicular, and the angle θ ₁ is adjusted by a variable mechanism (not shown). Reflector 2
2B and 22C are longer than the reflectors 22A and 22D, so that the lower end is located below to guide and reflect the emitted light of the light source device 30 into the photographing space. Reflector 2
The reflecting surfaces 23A to 23D of the third lens are at an angle θ ₂ (θ
₂ > θ ₁ ), and the angle θ ₂ is a fixed value in this embodiment, although not particularly limited.
The camera 4 is displaced in the directions of the X axis, the Y axis, and the Z axis while having an angle θ with respect to a perpendicular line in order to prevent reflection.

In the above configuration, when diffused light is emitted from the light source device 30, the reflection plates 22A to 22D and the reflection plate 2
In order to uniformly irradiate the nameplate 1A of the watt-hour meter 1 from all directions and from all directions, the light is reflected by the reflecting surfaces 23A to 23D of the power meter 3.
No shadow is formed on the weighing unit located in the window frame. In addition, the four reflection plates 22A to 22D and the reflection plate 23
Since the four reflecting surfaces 23A to 23D illuminate the nameplate 1A of the wattmeter 1 from different heights and angles as surface light sources, illumination unevenness is eliminated and occurrence of halation is prevented. As described above, since the camera 4 has the angle θ with respect to the perpendicular, the reflection is prevented.

In the above embodiment, the reading of the nameplate of the watt-hour meter has been described. However, the present invention is not limited to this, and the present invention can be used for reading other electric devices and the like. In particular, when the present invention is applied to a reading surface covered with glass, the effect is large.

[0018]

As described above, according to the image reading apparatus such as the watt-hour meter name plate of the present invention, the illuminated surface is irradiated with the diffused light reflected by the multiple reflection surface, and the camera is moved perpendicular to the photographic surface. Because it is arranged at a predetermined angle to the angle, it prevents halation, shadows, and uneven lighting,
In addition, reflection of the camera can be prevented. As a result, the characters on the nameplate and the indicated values on the weighing unit can be read accurately.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an image reading device such as a watt-hour meter nameplate according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing details of a light source device and a reflector set according to the first embodiment.

FIG. 3 is an explanatory diagram showing a watt hour meter, a reflector set, a camera, a light source device, and the like according to the first embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Watt-hour meter 1A nameplate 2 Work positioning mechanism 3 Reflector set 4 Camera 5 Camera support mechanism 6 Housing 6A Bottom surface 7 Support 8 Fixing plate 9 Work table 9A Handle 10 Bearing member 11 Roller 12 Rotary shaft 13 Guide shaft 14 Slider 15 Work Holder 16 Work stopper 17 Roller 18 Rotary shaft 19 Bearing member 20 Belt 21 Operation handle 22A to 22D Reflector 23 Reflector 23A to 23D Reflective surface 24 Window 25 Fixed rod 26 Y-axis slide 27 X-axis slide 28 Z-axis slide 29 Camera support member 30 Light source device 31 Fluorescent lamp 32 Case 33 Diffusion filter plate 34 Fixing rod

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Yoshihide Exit Yoshimoto Higashi-ku, Nagoya-shi, Aichi Prefecture, Chubu Electric Power Co., Inc. (72) Inventor Yojio Miyahara 5-2-1 Ebara, Shinagawa-ku, Tokyo (72) Inventor Shinichi Ashiya 5-2-1 Ehara, Shinagawa-ku, Tokyo In-house Corporation (72) Inventor Masashi Hasegawa 5-2-2 Ehara, Shinagawa-ku, Tokyo No. 1 Inside Saneisha Works (72) Inventor Takayuki Aikawa 5-2-1 Ebara, Shinagawa-ku, Tokyo F-term inside Saneisha Works 5B047 AA11 BA02 BC04 BC12 BC14 5C022 AA01 AC00 AC21

Claims (4)

[Claims] A camera for photographing a photographing surface such as a watt-hour meter; light source means provided at a position not directly irradiating the photographing surface and emitting light emitted from a linear light source or a point light source as diffused light; Reflecting means for reflecting the diffused light emitted from the light source means and irradiating the diffused light to the photographing surface; and camera supporting means for supporting the camera so as to be inclined at a predetermined angle with respect to the photographing surface. An image reading device such as a wattmeter nameplate. 2. An image reading device such as a watt-hour meter plate according to claim 1, wherein said light source means emits said diffused light from both sides of said photographing surface upward from below said photographing surface. 3. The reflection means, comprising: a first four reflection plates arranged at four first sides surrounding the imaging surface at a first predetermined angle with respect to a perpendicular to the imaging surface; 4
Located on the side surface above the first four reflectors,
A second angle greater than the first predetermined angle with respect to the perpendicular
2. An image reading device such as a watt-hour meter name plate according to claim 1, comprising a second four reflecting plates arranged at a predetermined angle. 4. The light source means includes a fluorescent lamp having a predetermined length driven by a high frequency, a case accommodating the fluorescent lamp and having an opening extending from below to above, and a diffusion covering the opening. The image reading device such as a watt-hour meter name plate according to claim 2, comprising a filter plate.