TWI571364B - A drug identification device - Google Patents

Description

Medicine ingot identification device

The present invention relates to an identification device, and more particularly to a tablet identification device.

With the aging of the population, the demand for nursing staff in various long-term care and maintenance institutions has soared, but medical disputes have made medical staff less secure in their own industries, and the turnover rate of medical staff has remained high, making the population ageing. The medical resources are worse.

Among them, the "dose of mistreatment" by medical staff is one of the main causes of medical disputes. In Taiwan, routine drug delivery in the ward accounts for 23% of medical adverse events, and misadministration directly affects the patient's medical safety, resulting in serious injury or even death. Therefore, many hospitals have gradually adopted a conventional drug identification device for electronic automatic administration.

The conventional drug identification device comprises a drug loading platform, a plurality of light sources, a plurality of image capturing devices and an image processor. The drug loading platform is provided with a detection area, and the plurality of image capturing devices are oriented toward the detection area. Shooting, and each of the light sources is disposed at a boundary between the two image pickers, so that the images captured by the plurality of image pickers have sufficient brightness, and the resulting image is further transmitted to the image. a processor that discriminates according to the appearance of the drug and compares it with the internal database to confirm the type of the tablet, thereby achieving the purpose of automated administration, similar to an embodiment of the conventional drug identification device It has been disclosed in the first example of the Patent Method No. 200006379 of the Republic of China Patent No. 200006379, "Method and System for Detecting the Appearance of Granular Drugs".

The variety of drugs can not be completely distinguished by the appearance characteristics of the dosage form (such as capsules, tablets or pills), shape or color. Therefore, after forming the tablets, the pharmaceutical industry often embosses the surface to form a pattern or an English letter number. Increase the identification of medicine ingots by medical staff Degree, different tablets have different surface and embossing depth, and the illumination direction of the light source directly affects the imaging effect of the tablet, which makes the setting position of the light source to the identification accuracy of the conventional drug identification device. Have a decisive impact. However, in the conventional drug identification device, although the light source can provide sufficient brightness to discriminate the color of the tablet, in the case where the light sources interact, the imprint pattern of the tablet cannot be clearly presented; When the image picker is photographed toward the detection area, the tablet and the background image thereof are removed, and the image of the tablet is separated from the background image by the image processor, but in the light source When the predetermined angle is irradiated, the outline of the medicine tablet is blurred and difficult to recognize, which causes the difficulty of analysis by the image processor to be improved. For the above reasons, the conventional medicine tablet identification device cannot accurately identify the type of the medicine tablet, and the automation is automated. The goal of administration is far from being possible.

In view of the above, it is necessary to provide a tablet identification device to solve the problem caused by the poor imaging effect of the conventional tablet identification device on the tablet.

The invention provides a medicine ingot identification device, which can clearly distinguish the embossed pattern and contour line on the surface of the medicine tablet.

The invention provides a tablet identification device, comprising: a detection platform, wherein the detection platform is provided with a first surface and a second surface; a first image capture device, the first image capture device Is provided with a first capturing lens, the first capturing lens is disposed toward the first surface; a first forward light source, the first forward light source is irradiated to the detecting platform in a first forward illumination direction a first lateral light source, the first lateral light source is disposed between the first surface of the detecting platform and the first capturing lens, and the first lateral light source has a first side In the direction of illumination, the first forward illumination direction is perpendicular to the first lateral illumination direction; a second image capture device, a second forward light source, and a second lateral light source, the second image capture Is provided with a second capturing lens, the second capturing lens is disposed toward the second surface, and the second forward light source is irradiated to the second surface of the detecting platform in a second forward irradiation direction, and the Second side The light source is disposed between the second surface of the detecting platform and the second capturing lens, the second lateral light source has a second lateral illumination direction, and the second forward illumination direction is perpendicular to the second a lateral light illuminating plate, wherein a light averaging plate is disposed between the first forward light source and the first surface of the detecting platform, and another light absorbing plate is disposed on the second forward light source and the detecting platform Between the second surfaces.

The invention relates to a tablet identification device, wherein the second image capturing device, the second forward light source and the second lateral light source are symmetric surfaces of the detection platform to be respectively symmetric with the first image. a picker, a first forward light source and a first lateral light source.

The invention relates to a tablet identification device, wherein a light guide plate is disposed between the first lateral light source and the first forward light source, and another light guide plate is disposed on the second lateral light source and the Between the second forward light sources.

The invention relates to a tablet identification device, wherein each of the light-receiving plates is provided with a photographic opening, and the first capturing lens and the second capturing lens are respectively disposed on each of the photographic ports of each of the averaging plates.

The invention relates to a tablet identification device, wherein the first forward light source ring is disposed on the first capturing lens, and the second forward light source ring is disposed on the second capturing lens.

The invention relates to a tablet identification device, wherein the first lateral light source is provided with a plurality of illuminants, and the plurality of illuminating systems are disposed on an annular fixing member, and the annular fixing member is disposed at the first of the detecting platform Between the surface and the first forward light source.

The tablet identification device of the present invention further includes a housing, the detection platform, the first image capturing device, the first forward light source, the first lateral light source, and the second image capturing device The second forward light source and the second lateral light source are disposed inside the casing.

The medicine ingot identification device of the present invention is provided with the first image capturing device, the first forward light source and the first lateral light source, so that the first image capturing device can accurately capture the color and shape of the medicine tablet , embossing patterns and contours to achieve the effect of increasing the accuracy of the identification of the ingot.

The tablet identification device of the present invention further includes the second image capturing device, the second forward light source and the second lateral light source, and the first image capturing device, the first forward light source and the first The lateral light source collectively captures images of the opposite sides of the tablet, thereby reducing the effect of false positives.

〔this invention〕

1‧‧‧Testing platform

1a‧‧‧ first surface

1b‧‧‧ second surface

2a‧‧‧First Image Picker

2b‧‧‧Second image capturer

21a‧‧‧first capture lens

21b‧‧‧Second capture lens

3a‧‧‧First forward light source

3b‧‧‧second forward light source

4a‧‧‧First lateral light source

4b‧‧‧Second lateral light source

41a‧‧‧Lights

41b‧‧‧Lights

5‧‧‧Light board

51‧‧‧Photography

H‧‧‧shell

C‧‧‧ring fasteners

D1‧‧‧First forward direction

D2‧‧‧second positive direction

D3‧‧‧First lateral direction of illumination

D4‧‧‧Second lateral direction

Fig. 1 is a perspective exploded view of the tablet identification device of the present invention.

Fig. 2 is a perspective view showing the appearance of the tablet identification device of the present invention.

Fig. 3 is a sectional view showing the combination of the tablet identification device of the present invention.

Fig. 4 is a schematic view showing the direction of illumination of the light source of the tablet identification device of the present invention.

The above and other objects, features, and advantages of the present invention will become more apparent from the aspects of the appended claims. This is an exploded perspective view of the ingot identification device of the present invention. The ingot identification device includes a detection platform 1, a first image capturing device 2a, a first forward light source 3a, and a first lateral light source 4a. The detecting platform 1 is provided with a first surface 1a and a second surface 1b. The first image capturing device 2a is disposed toward the first surface 1a of the detecting platform 1. The first forward light source 3a is The first lateral light source 4a is disposed between the first image capturing device 2a and the detecting platform 1. Referring to FIG. 2, the tablet identification device of the present invention preferably includes a housing H for the detection platform 1, the first image capture device 2a, the first forward light source 3a, and the first The side light source 4a is housed inside the casing H to isolate external light or matter from affecting the detection result.

In addition, the tablet identification device is further provided with a second image capturing device 2b, a second forward light source 3b and a second lateral light source 4b, and the components are oriented toward the second detecting platform 1 The surface 1b is disposed such that the first image capturing device 2a and the second image capturing device 2b The image capturing may be performed on the front and back sides of the tablet, and the second image capturing device 2b, the second forward light source 3b and the second lateral light source 4b are preferably symmetrical with the detecting platform 1 For distinguishing the first image capturing device 2a, the first forward light source 3a and the first lateral light source 4a, respectively, so that the tablet recognition device can be used by the image capturing devices (2a, 2b) And the light sources (3a, 3b, 4a, 4b) obtain images of the clear and corresponding opposite sides of the tablet.

In detail, please refer to FIGS. 1 and 2, the detecting platform 1 is used for placing a medicine placing ingot, and the detecting platform 1 is provided with the first surface 1a and the second surface 1b, in order to obtain a medicine ingot. The detection platform 1 is preferably transparent to the two sides of the image information. In addition, the detecting platform 1 can be one continuous conveyor belt, and the conveyor belt is driven by the machine as the power, so that the ingot to be detected must be located in the predetermined detection zone, and the detection platform 1 is not limited here. The type and appearance of the test platform 1 as long as the test platform 1 can be used to fix the drug tablet in the predetermined detection zone is within the scope of the present invention.

As shown in FIG. 3, the first image capturing device 2a and the second image capturing device 2b each have a first capturing lens 21a and a second capturing lens 21b. The first capturing lens 21b 21a and the second capturing lens 21b are respectively disposed on the first surface 1a and the second surface 1b, so that the first image capturing device 2a and the second image capturing device 2b are photographed and placed thereon. Detect the opposite two sides of the tablet of the platform.

Referring to FIGS. 1 and 4, the first forward light source 3a is used to illuminate the first surface 1a of the detection platform 1 and is placed on the detection platform 1 in a first forward illumination direction D1. One of the tablets P; in contrast, the second forward light source 3b is used to illuminate the second surface 1b of the detecting platform 1 and is irradiated to the tablet P in a second forward irradiation direction D2. A positive light source 3a and the second forward light source 3b provide sufficient illumination of the detection platform 1 so that images captured by the first image capture device 2a and the second image capture device 2b can be clearly Determine the color of the tablet. Preferably, the first forward light source 3a and the second forward light source 3b are disposed on the circumference of the first capturing lens 21a and the second capturing lens 21b to complete the light. The tablet is irradiated azimuthally on the detection platform 1. It should be noted that the first forward light source 3a and the second forward light source 3b may be energy concentrated beams or energy dispersed beams, and there is no limit here, however, if the latter The "first forward irradiation direction D1" and the "second forward irradiation direction D2" defined above refer to the direction of light emitted by the center of symmetry of the light emitted by the light sources 3a, 3b, respectively.

Referring to FIGS. 1 and 4, the first lateral light source 4a is disposed between the first image capturing device 2a and the first surface 1a of the detecting platform 1, and the first lateral light source 4a is The first lateral light source 4b is disposed between the second image capturing device 2b and the second surface 1b, and has a second lateral illumination direction D4. . The first lateral illumination direction D3 is not parallel to the first forward illumination direction D1, and the second lateral illumination direction D4 is also not parallel to the second forward illumination direction D2, and is preferably as shown in FIG. As shown, the first forward direction D1 and the second forward direction D2 are perpendicular to the first lateral direction D3 and the second lateral direction D4, respectively. In addition, the first lateral light source 4a and the second lateral light source 4b may be concentrated light or divergent light, and in the embodiment, the light sources 3a, 3b, 4a, and 4b are white light emitting diodes. However, the type of light source is not limited to this.

Preferably, the first lateral light source 4a and the second lateral light source 4b are annular, so that the emitted light can be uniformly irradiated to the first surface 1a and the second surface 1b, and placed The profile of the tablet P of the detection platform 1 is. In the embodiment, the first lateral light source 4a and the second lateral light source 4b are respectively provided with a plurality of illuminants 41a and 41b, and the plurality of illuminants 41a and 41b are respectively coupled to an annular fixing member C. The first side light source 4a and the second side light source 4b may of course be flexible endless light sources, and are not limited herein.

In addition, in the tablet detecting device, the first lateral light source 4a is disposed between the first forward light source 3a and the first surface 1a, and the second lateral light source 4b is also disposed at the second surface. Between the lateral light source 4b and the second surface 1b so as not to directly illuminate the tablet P The side light source 4a and the second side light source 4b are closer to the tablet P and clearly illuminate the outline of the medicine P. In addition, as shown in FIG. 1, the tablet detecting device preferably further includes two light-homogenizing plates 5, one of which is disposed on the first forward light source 3a and the first surface 1a of the detecting platform 1 Between the second forward light source 3b and the second surface 1b, another light plate 5 is disposed between the first forward light source 3a and the second forward light source 3b. The light-receiving plate 5 is more uniformly irradiated to the detecting platform 1 to more realistically present the appearance characteristics of the tablet P. Preferably, each of the light-averaging plates 5 is parallel to the detecting platform 1 and the first positive plate. The light source 3a or the second forward light source 3b is disposed between the forward light sources 3a and 3b and the lateral light sources 4a and 4b. Each of the light-receiving plates 5 is provided with a photographic opening 51. The first capturing lens 21a and the second capturing lens 21b are respectively extended to the respective photographic openings 51, so as to avoid the drawing by the grading plate 5. The image is blurred or distorted.

The image capturing principle of the opposite surfaces of the detecting platform 1 and the relative positions of the two light sources (ie, the positive light source and the side light source) are the same, and the first image capturing device 2a and the first positive are used here. The light source 3a and the first lateral light source 4a will be described as an example. Referring to FIGS. 3 and 4, since the first capturing lens 21a is disposed toward the first surface 1a, the first forward illumination direction D1 is the same as the first imaging device 2a. The first forward light source 3a is directly irradiated on the surface of the tablet P, so that the color of the tablet P can be clearly illuminated by the first image picker 2a under the illumination of the first forward light source 3a. In addition, the first lateral light source 4a is disposed between the first capturing lens 21a and the first surface 1a, so that the tablet P can deepen the tablet under the effect of laterally lighting. The outline of P is made more pronounced by the pattern imprinted on the first surface 1a or the second surface 1b. Thereby, the tablet identification device of the present invention can not only capture the color of the tablet P by the first image capturing device 2a, but also clearly display the outline and the embossed pattern of the tablet. When further matching with a processor to judge and analyze the obtained image, the clear outline also makes the signal of the tablet P itself easily separated from the background value signal, thereby simplifying the difficulty of image processing.

For example, in actual operation, the forward light sources 3a, 3b, the lateral light sources 4a, 4b, and the image capturing devices 2a, 2b may be disposed in the casing H to isolate external light from entering. . Then, the first forward light source 3a and the second forward light source 3b are turned on, and the first image capture is performed to obtain a first image value; and the first forward light source 3a and the second forward direction are continuously closed. a light source 3b, and the first lateral light source 4a and the second lateral light source 4b are turned on to perform a second image capturing, and obtain the second image value; finally, the first image value and the second The image values are processed (for example: gray scale conversion, image cutting and area labeling, etc.), compared and analyzed to remove the background value other than the tablet P, and the color, shape and imprint of the tablet P are precisely defined. The pattern is obtained by obtaining a recognition result value. The above embodiments are used to help explain that the ingot identification device of the present invention can be used to increase the recognition degree of the ingot. However, the order of opening and closing of the forward light sources 3a, 3b and the lateral light sources 4a, 4b should not be used. Limited.

In summary, the ingot identification device of the present invention is provided with the first image capturing device 2a, the first forward light source 3a and the first lateral light source 4a, so that the first image capturing device 2a can be accurately The color, shape, embossing pattern and contour of the tablet P are captured to achieve an increase in the accuracy of the identification of the tablet.

Moreover, the tablet identification device of the present invention further includes the second image capturing device 2b, the second forward light source 3b and the second lateral light source 4b, and the first image capturing device 2a, the first positive The light source 3a and the first lateral light source 4a collectively capture images of the opposite surfaces of the tablet P, so as to prevent the tablet P from having an embossed pattern on only one side, and placing the face up on the detecting platform 1 When the image of the embossed pattern is not obtained by the first image capturing device 2a, the first forward light source 3a, and the first lateral light source 4a, the type of the tablet is incorrectly determined, thereby reducing false positives. The effect of the situation.

While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope protected by the invention, and thus the present invention The scope of protection is subject to the definition of the scope of the patent application attached.

1‧‧‧Testing platform

1a‧‧‧ first surface

1b‧‧‧ second surface

2a‧‧‧First Image Picker

2b‧‧‧Second image capturer

21a‧‧‧first capture lens

21b‧‧‧Second capture lens

3a‧‧‧First forward light source

3b‧‧‧second forward light source

4a‧‧‧First lateral light source

4b‧‧‧Second lateral light source

41a‧‧‧Lights

41b‧‧‧Lights

5‧‧‧Light board

51‧‧‧Photography

C‧‧‧ring fasteners

Claims (7)

A medicine ingot identification device comprises: a detection platform, wherein the detection platform is provided with a first surface and a second surface; a first image capturing device, the first image capturing device is provided with a first a first lens that is disposed toward the first surface; a first forward light source that illuminates the first surface of the detection platform in a first forward illumination direction a first lateral light source, the first lateral light source is disposed between the first surface of the detecting platform and the first capturing lens, and the first lateral light source has a first lateral illumination direction. The first forward illumination direction is perpendicular to the first lateral illumination direction; a second image capture device, a second forward light source, and a second lateral light source, and the second image capture device is provided with a first a second capture lens disposed toward the second surface, the second forward light source illuminating the second surface of the detection platform in a second forward illumination direction, and the second lateral direction The light source is disposed on the second surface of the detecting platform and the second capturing lens The second lateral light source has a second lateral illumination direction, the second forward illumination direction is perpendicular to the second lateral illumination direction; and two light-homogenizing plates, wherein a uniform light plate is disposed in the first forward direction Between the light source and the first surface of the detection platform, another light plate is disposed between the second forward light source and the second surface of the detection platform. The tablet identification device of claim 1, wherein the second image capturing device, the second forward light source and the second lateral light source are symmetric with respect to the detecting platform to be respectively symmetric The first image capturing device, a first forward light source, and a first lateral light source. The tablet identification device of claim 1, wherein one of the light guide plates is disposed between the first lateral light source and the first forward light source, and the other light plate is disposed at the first Between the two lateral light sources and the second forward light source. The tablet identification device of claim 3, wherein each of the light-receiving panels is provided with a photographic opening, and the first capturing lens and the second capturing lens are respectively disposed on each of the averaging plates Each of the photographic ports. The tablet identification device of claim 1 or 3, wherein the first forward light source ring is disposed on the first capture lens, and the second forward light source ring is disposed on the second Take the lens. The tablet identification device of claim 1 or 3, wherein the first lateral light source is provided with a plurality of illuminators, and the plurality of illuminating systems are disposed on an annular fixing member. And disposed between the first surface of the detection platform and the first forward light source. The tablet identification device of claim 1, further comprising a housing, the detection platform, the first image capturing device, the first forward light source, the first lateral light source, and the The second image capturing device, the second forward light source and the second lateral light source are disposed inside the casing.