CN212160598U

CN212160598U - Infrared somatosensory gesture recognition system

Info

Publication number: CN212160598U
Application number: CN202020531846.9U
Authority: CN
Inventors: 徐锋; 孙剑锋
Original assignee: Huainan Normal University
Current assignee: Huainan Normal University
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2020-12-15
Anticipated expiration: 2030-04-10

Abstract

The utility model discloses a gesture recognition system is felt to infrared body, including the gesture recognition system body, the gesture recognition system body includes host computer management system, light source information acquisition system, signal conditioning system and algorithm analytic system, and host computer management system includes control area and information display district. The utility model discloses a set up host computer management system, light source information acquisition system, signal conditioning system, algorithm analytic system, control area, information display district, infrared sensor and temperature sensor and solved wearable sensor's identification mode and need the user to wear professional equipment, application scope is narrow, the application is poor and the identification method of computer vision has solved application scope problem, nevertheless requires tighter to equipment, environment, and the algorithm is more complicated, the relatively poor problem of real-time.

Description

Infrared somatosensory gesture recognition system

Technical Field

The utility model relates to a gesture recognition technology field especially relates to a gesture recognition system is felt to infrared body.

Background

With the development of computer technology, man-machine interaction technology is more mature, people hope to communicate with a computer in a more natural way, wherein body morphological languages such as gestures, body gestures, expressions and the like are common communication ways for people, and the gestures have the characteristics of liveliness, vividness, intuition and the like in man-machine interaction and become an important communication means for man-machine interaction.

However, the traditional gesture recognition mainly includes two types, namely a contact type based on a wearable sensor and a non-contact type based on computer vision, the recognition mode based on the wearable sensor requires a user to wear professional equipment, the application range is narrow, and the applicability is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gesture recognition system is felt to infrared body, the identification mode who has solved wearable sensor through setting up host computer management system, light source information acquisition system, signal conditioning system, algorithm analysis system, control area, information display district, infrared sensor and temperature sensor needs the user to wear professional equipment, application scope is narrow, application nature is poor and computer vision's identification method has solved the application scope problem, but to equipment, environmental requirement is tighter, and the algorithm is more complicated, the relatively poor problem of real-time.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model relates to an infrared somatosensory gesture recognition system, which comprises a gesture recognition system body, wherein the gesture recognition system body comprises an upper computer management system, a light source information acquisition system, a signal conditioning system and an algorithm analysis system, and the upper computer management system comprises a control area and an information display area;

the light source information acquisition system comprises an infrared sensor and a temperature sensor, wherein the lower surfaces of the infrared sensor and the temperature sensor are provided with an installation floor, the surface of the installation floor is provided with a first LED infrared lamp, a second LED infrared lamp, a third LED infrared lamp and a fourth LED infrared lamp, the first LED infrared lamp, the second LED infrared lamp, the third LED infrared lamp and the fourth LED infrared lamp are arranged at four corners of the installation floor, and the infrared sensor is fixed at the middle position of the installation floor.

Preferably, the infrared sensor left side is provided with infrared LED lamp, and the infrared sensor top is provided with the gesture body, place between infrared sensor and the infrared LED lamp syntropy.

Preferably, the upper computer management system, the light source information acquisition system, the signal conditioning system and the algorithm analysis system are electrically connected.

Compared with the prior art, the beneficial effects of the utility model are that:

1. by arranging the upper computer management system, the light source information acquisition system, the signal conditioning system and the algorithm analysis system, the light source information acquisition system can identify the moving path of a hand part by the fact that the rising time sequence of reflected signals caused by the fact that the hand part passes over different infrared light sources is different, so that a two-dimensional gesture is judged, the light source information acquisition system transmits the acquired information to the signal conditioning system, the signal conditioning system mainly comprises an infrared transmitting circuit and an infrared receiving circuit, the light signals acquired by the light source information acquisition system are weak, the signals are easily submerged in background noise, at the moment, the signal conditioning system with the functions of denoising and filtering and voltage amplifying acquires corresponding voltage signals through a twelve-bit ADC module integrated in an MCU, the four infrared transmitting circuits are circularly driven, the corresponding infrared LED voltage signals are acquired, and the acquisition of all paths can be distinguished in the mode without interference, after the processed signals are transmitted to an algorithm analysis system, the algorithm analysis system constructed based on an HMM probability interval algorithm analyzes and processes the signals, detects, stores and identifies gesture actions and sends identification results to external equipment in real time to realize control of the external equipment, a first LED infrared lamp, a second LED infrared lamp, a third LED infrared lamp and a fourth LED infrared lamp are arranged at four corners of an installation floor, the structural design ensures that the line and column intervals are equal, the same infrared radiation quantity in every ninety-degree direction of a plane is ensured, the movement directions of hands can be more effectively distinguished, the system for identifying gestures relieves people from complicated acquisition equipment required by a wearable type and a visual extraction mode of the traditional gesture identification, and redundant gesture information acquisition modes are not required by gesture information identification parts of equipment such as teaching experiments, intelligent homes and the like in many occasions with low precision requirements, the recognition module occupies smaller space, is more portable, is simple and safe to operate, has low cost, can be applied to aspects such as control of home entertainment equipment or screen operation of a tablet computer, and can be applied to occasions with simple requirements on body feeling by using the recognition module in partial occasions by analyzing the motion speed of hands.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a system configuration diagram of the present invention;

FIG. 2 is a management system of the upper computer in FIG. 1 according to the present invention;

FIG. 3 is a schematic view of the light source information collection system of FIG. 1 according to the present invention;

fig. 4 is a schematic diagram illustrating the operation of the infrared sensor of fig. 3 according to the present invention;

fig. 5 is a circuit diagram of the information conditioning system of fig. 1 in accordance with the present invention;

fig. 6 is a waveform diagram illustrating the detection of the first LED infrared lamp of fig. 3 according to the present invention;

fig. 7 is a waveform diagram illustrating detection of the first LED infrared lamp and the second LED infrared lamp in fig. 3 according to the present invention;

fig. 8 is a waveform diagram illustrating detection of the first LED infrared lamp, the second LED infrared lamp and the third LED infrared lamp in fig. 3 according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below

1. A gesture recognition system body; 2. an upper computer management system; 3. a light source information acquisition system; 4. a signal conditioning system; 5. an algorithm analysis system; 6. a control area; 7. an information display area; 8. an infrared sensor; 9. a temperature sensor; 10. a first LED infrared lamp; 11. a second LED infrared lamp; 12. a third LED infrared lamp; 13. a fourth LED infrared lamp; 14. installing a floor; 15. an infrared LED lamp; 16. a gesture body.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-8, the utility model relates to an infrared body sensing gesture recognition system, including gesture recognition system body 1, gesture recognition system body 1 includes host computer management system 2, light source information collection system 3, signal conditioning system 4 and algorithm analysis system 5, and host computer management system 2 includes control area 6 and information display area 7, light source information collection system 3 includes infrared sensor 8 and temperature sensor 9, infrared sensor 8 will be detected by infrared that gesture body 16 reflects back and discerned, temperature sensor 9 is for getting rid of the malfunction of non-target object, adopt temperature sensor 9 to measure the temperature of target object and surrounding environment, calculate the difference in temperature, temperature sensor 9 chooses high accuracy non-contact infrared temperature sensor 9 model to be MLX90614 for effective detection-20 "C ~ 120" C's temperature change, the visual angle range is about 100, the temperature values of all objects in the visual angle range can be detected, the lower surfaces of the infrared sensor 8 and the temperature sensor 9 are provided with a mounting floor 14, the surface of the mounting floor 14 is provided with a first LED infrared lamp 10, a second LED infrared lamp 11, a third LED infrared lamp 12 and a fourth LED infrared lamp 13, the first LED infrared lamp 10, the second LED infrared lamp 11, the third LED infrared lamp 12 and the fourth LED infrared lamp 13 are arranged at four corners of the mounting floor 14, the infrared sensor 8 is fixed at the middle position of the mounting floor 14, the structural design ensures that the distances among lines and rows are equal, the same infrared radiation amount in every ninety degree direction of a plane is ensured, the movement direction of hands can be effectively distinguished, the left side of the infrared sensor 8 is provided with the infrared LED lamp 15, a gesture body 16 is arranged above the infrared sensor 8, the gesture body 16 can prevent the infrared rays emitted by the infrared LED lamp 15 from being diffused, the blocked infrared rays are absorbed and identified by the infrared sensor 8, the infrared sensor 8 and the infrared LED lamp 15 are placed in the same direction, and the upper computer management system 2, the light source information acquisition system 3, the signal conditioning system 4 and the algorithm analysis system 5 are electrically connected.

The LED light sources are not completely collinear in distribution, the first LED infrared lamp 10 is used for sensing a single light source, the presence or absence of a hand can be detected, the detection waveform is shown in figure 6, when a hand is not detected, the output signal is basically in a straight line, and when the hand is detected, the signal output is obviously increased. Taking the double-light-source sensing of the first LED infrared lamp 10 and the second LED infrared lamp 11 as an example, two back and forth gestures can be detected, if the detected waveforms are as shown in fig. 7, according to the principle that the rising time sequence of the reflected signals of different infrared light sources is consistent with the sequence of the infrared light sources blocked by the hand, the moving direction of the gesture is judged to be from the first LED infrared lamp 10 to the second LED infrared lamp 11, and if the detected waveforms are as shown in fig. 8, the signals of the first LED infrared lamp 10 and the second LED infrared lamp 11 almost simultaneously rise, and then go to the third LED infrared lamp 12, and the moving direction of the gesture can be judged to be just intersected with the direction detected in fig. 7.

The working principle of the utility model is that when the utility model is used, the upper computer management system 2 is programmed by C language to control and drive the infrared LED lamp 15, when the gesture body 16 is blocked in front of the infrared LED lamp 15, the infrared sensor 8 can immediately detect the reflected infrared light, the temperature sensor 9 is used for eliminating the false operation of non-target objects, the temperature sensor 9 is used for measuring the temperature of the target object and the surrounding environment and calculating the temperature difference, the light source information acquisition system 3 sends the light signal acquired in the gesture moving process to the signal conditioning system 4, the signal conditioning system 4 debugs the weaker light signal acquired by the light source information acquisition system 3 through the signal conditioning system 4 with the functions of noise removal filtering and voltage amplification, the corresponding voltage signal is acquired through the twelve ADC modules integrated in the MCU, four infrared transmitting circuits are circularly driven, and the corresponding infrared LED voltage signal is acquired, after the processed signals are transmitted to the algorithm analysis system 5, the algorithm analysis system 5 constructed based on the HMM probability interval algorithm analyzes and processes the signals, detects, stores and identifies the gesture actions, and sends the identification result to the external device in real time, so that the external device is controlled.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a gesture recognition system is felt to infrared body, includes gesture recognition system body (1), its characterized in that: the gesture recognition system body (1) comprises an upper computer management system (2), a light source information acquisition system (3), a signal conditioning system (4) and an algorithm analysis system (5), and the upper computer management system (2) comprises a control area (6) and an information display area (7);

light source information acquisition system (3) include infrared sensor (8) and temperature sensor (9), and infrared sensor (8) and temperature sensor (9) lower surface are provided with installation floor (14), installation floor (14) surface mounting has first LED infrared lamp (10), second LED infrared lamp (11), third LED infrared lamp (12) and fourth LED infrared lamp (13), and first LED infrared lamp (10), second LED infrared lamp (11), third LED infrared lamp (12) and fourth LED infrared lamp (13) set up four turnings on installation floor (14), infrared sensor (8) are fixed at installation floor (14) intermediate position.

2. The system for recognizing the infrared somatosensory gesture according to claim 1, wherein an infrared LED lamp (15) is arranged on the left side of the infrared sensor (8), a gesture body (16) is arranged above the infrared sensor (8), and the infrared sensor (8) and the infrared LED lamp (15) are placed in the same direction.

3. The infrared somatosensory gesture recognition system according to claim 1, wherein the upper computer management system (2), the light source information acquisition system (3), the signal conditioning system (4) and the algorithm analysis system (5) are electrically connected.