CN220020309U - Carpet recognition device based on LED light source - Google Patents

Abstract

The utility model relates to a carpet recognition device based on an LED light source, which comprises: the hollow outer shell is provided with an imaging lens, a CMOS image sensor, a CPU (Central processing Unit) processor, an LED light source, an optical filter and a light condensing sheet which are arranged in the outer shell; the bottom of the outer shell is provided with a first installation position, and the imaging lens is connected with the first installation position; the CMOS image sensor is arranged opposite to the imaging lens and is positioned above the imaging lens; the optical filter is positioned between the CMOS image sensor and the imaging lens; the CPU processor is electrically connected with the CMOS image sensor; the bottom of the outer shell is provided with a second installation position, and the LED light source is connected with the second installation position; the condensing sheet is arranged at the bottom of the outer shell, and is arranged adjacent to the LED light source on one side of the LED light source.

Description

Carpet recognition device based on LED light source

Technical Field

The utility model relates to the field of application of sweeping robots, in particular to a carpet identification device based on an LED light source.

Background

With the development of modern science and technology, scientific workers invent a plurality of service robots, thereby providing convenience for the intelligent life of people. The robot of sweeping floor is as one of them typical representative, possesses certain artificial intelligence, can independently clean work, has liberated both hands for people, has improved work efficiency. Meanwhile, the sweeping robot is rapidly changing as an important intelligent technology, and functions of simple sweeping, dust removal and the like are gradually expanded, for example, more intelligent operations such as different working modes and the like are adopted for whether a carpet environment is paved or not. Thus, there is a need for a floor sweeping robot that can automatically identify carpets.

At present, most of sweeping robots use the difference of reflection characteristics of ultrasonic waves on the surfaces of different objects, and an ultrasonic sensor is used for identifying carpets, but the carpet identification rate is not high due to the fact that the ultrasonic wave is long in wavelength and is easily influenced by ambient temperature and ambient noise. For example, chinese patent CN211212955U discloses an intelligent sweeper, which comprises an ultrasonic module, a sweeper body and a microcontroller; the ultrasonic module and the microcontroller are both arranged on the sweeper body, and the microcontroller judges the material of the floor according to the ultrasonic signal amplitude measured by the ultrasonic module so as to control the action of the sweeper. When the floor material is judged to be a carpet, the front carpet is avoided in the wet mopping mode, or the rotating speed of the fan is increased in the normal dust removing mode. Therefore, the intelligent floor sweeper is based on the fact that ultrasonic waves are far away from a carpet to be identified, but the identification rate of the ultrasonic waves is obviously greatly affected under the condition that the ultrasonic waves have the defects, and the working efficiency of the intelligent floor sweeper is further reduced.

Disclosure of Invention

The utility model aims to provide a carpet identification device based on an LED light source.

In order to achieve the above object, the present utility model provides a carpet recognition device based on an LED light source, comprising: the hollow outer shell is provided with an imaging lens, a CMOS image sensor, a CPU (Central processing Unit) processor, an LED light source, an optical filter and a light condensing sheet which are arranged in the outer shell;

the bottom of the outer shell is provided with a first installation position, and the imaging lens is connected with the first installation position;

the CMOS image sensor is arranged opposite to the imaging lens and is positioned above the imaging lens;

the optical filter is positioned between the CMOS image sensor and the imaging lens;

the CPU processor is electrically connected with the CMOS image sensor;

the bottom of the outer shell is provided with a second installation position, and the LED light source is connected with the second installation position;

the condensing sheet is arranged at the bottom of the outer shell, and is arranged adjacent to the LED light source on one side of the LED light source.

According to one aspect of the utility model, the LED light source is disposed adjacent to the imaging lens;

and the light condensing sheet and the axial direction of the LED light source are provided with an included angle.

According to one aspect of the utility model, the angle between the condensing sheet and the axial direction of the LED light source is 30 degrees, 50 degrees, 70 degrees or 90 degrees.

According to one aspect of the utility model, the included angle between the light condensing sheet and the axial direction of the LED light source is continuously adjustable, and the adjusting range of the included angle is 30-90 degrees.

According to one aspect of the utility model, the light collecting sheet is flat or arc-shaped.

According to one aspect of the present utility model, further comprising: a power interface and a signal output interface;

the power interface is connected with the CMOS image sensor, the CPU processor and the LED light source;

the signal output interface is electrically connected with the CPU processor and is used for outputting the identification result of the CPU processor.

According to the scheme of the utility model, all parts of the utility model are arranged in the fixed shell, so that the volume of the whole device is greatly reduced, the device is very suitable for being arranged on related household appliances such as a sweeping robot, and the whole device has a simple and practical design structure, effectively controls the production cost and has great commercial value.

According to the scheme provided by the utility model, the carpet identification method and the carpet identification device can be used for automatically identifying carpets, so that the identification efficiency is improved, and the user experience is effectively improved.

Drawings

FIG. 1 is a block diagram schematically illustrating the construction of a carpet recognition device according to one embodiment of the present utility model;

fig. 2 is a diagram schematically showing the relative positions of a condensing sheet and an LED light source according to an embodiment of the present utility model.

Detailed Description

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments will be briefly described below. It is apparent that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

In describing embodiments of the present utility model, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer" and the like are used in terms of orientation or positional relationship based on that shown in the drawings, which are merely for convenience of description and to simplify the description, rather than to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus the above terms should not be construed as limiting the present utility model.

The present utility model will be described in detail below with reference to the drawings and the specific embodiments, which are not described in detail herein, but the embodiments of the present utility model are not limited to the following embodiments.

As shown in fig. 1, according to an embodiment of the present utility model, a carpet recognition device based on an LED light source of the present utility model includes: a hollow outer case 1, an imaging lens 2, a CMOS image sensor 3, a CPU processor 4, an LED light source 5, an optical filter 6 and a condensing sheet 7 which are arranged inside the outer case 1; . In the present embodiment, a first mounting position is provided at the bottom of the outer case 1, and the imaging lens 2 is connected to the first mounting position; the CMOS image sensor 3 is disposed opposite to the imaging lens 2, and the CMOS image sensor 3 is disposed above the imaging lens 2, for receiving light inputted from the imaging lens 2 and imaging the ground. In the present embodiment, the optical filter 6 is located between the CMOS image sensor 3 and the imaging lens 2, so that the CMOS image sensor 3 can only obtain the LED light supplementing portion, and shield the external natural light. In the present embodiment, the CPU processor 4 is electrically connected to the CMOS image sensor 3, and is configured to perform carpet recognition on an image formed by the CMOS image sensor 3. In the present embodiment, a second mounting position is provided at the bottom of the outer case 1, and the LED light source 5 is connected to the second mounting position. In the present embodiment, the condensing sheet 7 is mounted at the bottom of the outer case 1, and is disposed adjacent to the LED light source 5 at one side of the LED light source 5. By arranging the condensing sheet 7 at the outer side of the LED light source 5, the light emitted by the LED light source 5 can be directionally reflected, so that the light irradiated on the ground is more uniform.

As shown in connection with fig. 1 and 2, according to one embodiment of the present utility model, an LED light source 5 is disposed adjacent to an imaging lens 2.

By arranging the LED light source 5 adjacent to the imaging lens 2, the imaging view of the imaging lens 2 can be better illuminated, and the carpet can be accurately identified.

According to one embodiment of the utility model, the angle between the condensing sheet 7 and the axial direction of the LED light source 5 is 30 °, 50 °, 70 ° or 90 °. In this embodiment, the condensing sheet 7 may be directly fixed to the bottom of the outer casing 1 by means of bonding, threaded connection, clamping, etc. according to a required setting angle, so as to implement directional reflection of the light emitted by the LED light source 5, and ensure that uniform light is formed in the field of view of the imaging lens 2.

As shown in fig. 2, according to another embodiment of the present utility model, the angle between the condensing sheet 7 and the axial direction of the LED light source 5 is continuously adjustable, and the adjustment range of the angle is 30 ° to 90 °. In this embodiment, an adjustment support is provided at the bottom of the outer case 1, and the condensing sheet 7 is mounted on the adjustment support, so that the inclination angle of the condensing sheet 7 can be continuously adjusted by adjusting the position of the adjustment support. For example, the adjustment mount includes: a mounting seat for mounting the condensing sheet 7 and an adjusting structure for adjusting the angle of the mounting seat. Wherein, mount pad appearance and spotlight piece 7's appearance assorted setting to be used for realizing spotlight piece 7's installation, and mount pad one end can rotate with the bottom of shell body 1 and be connected, and then can realize the adjustment to mount pad angle through adjusting the structure. In this embodiment, the adjusting structure may be provided as a telescopic rod or a motor mounted at a position where the mount is rotatably connected to the bottom of the outer case 1.

According to one embodiment of the present utility model, the condensing sheet 7 is flat or arc-shaped.

As shown in fig. 1, according to an embodiment of the present utility model, further comprising: a power interface 8 and a signal output interface 9. In the present embodiment, the power interface 8 is connected to the CMOS image sensor 3, the CPU processor 4, and the LED light source 5; the signal output interface 9 is electrically connected to the CPU processor 4, and is configured to output an identification result of the CPU processor 4.

The foregoing is merely exemplary of embodiments of the utility model and, as regards devices and arrangements not explicitly described in this disclosure, it should be understood that this can be done by general purpose devices and methods known in the art.

The above description is only one embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (5)

1. A carpet recognition device based on an LED light source, comprising: a hollow outer shell (1), an imaging lens (2), a CMOS image sensor (3), a CPU (Central processing Unit) processor (4), an LED light source (5), an optical filter (6) and a condensing sheet (7) which are arranged in the outer shell (1);

the bottom of the outer shell (1) is provided with a first installation position, and the imaging lens (2) is connected with the first installation position;

the CMOS image sensor (3) is arranged opposite to the imaging lens (2), and the CMOS image sensor (3) is arranged above the imaging lens (2);

the optical filter (6) is positioned between the CMOS image sensor (3) and the imaging lens (2);

the CPU processor (4) is electrically connected with the CMOS image sensor (3);

the bottom of the outer shell (1) is provided with a second installation position, and the LED light source (5) is connected with the second installation position;

the light condensing sheet (7) is arranged at the bottom of the outer shell (1), and is arranged adjacent to the LED light source (5) at one side of the LED light source (5);

the LED light source (5) is arranged adjacent to the imaging lens (2);

the light condensing sheet (7) and the axial direction of the LED light source (5) are provided with an included angle.

2. Carpet recognition device according to claim 1, characterized in that the angle of the light collecting tab (7) to the axial direction of the LED light source (5) is 30 °, 50 °, 70 ° or 90 °.

3. Carpet recognition device according to claim 1, characterized in that the angle of the light collecting tab (7) with respect to the axial direction of the LED light source (5) is continuously adjustable, and that the adjustment range of the angle is 30 ° to 90 °.

4. A carpet recognition arrangement according to claim 2 or 3, characterized in that the light collecting tab (7) is plate-like or arc-like.

5. The carpet recognition device of claim 4, further comprising: a power interface (8) and a signal output interface (9);

the power interface (8) is connected with the CMOS image sensor (3), the CPU processor (4) and the LED light source (5);

the signal output interface (9) is electrically connected with the CPU processor (4) and is used for outputting the identification result of the CPU processor (4).