CN211603864U - A smart home control system based on gesture recognition - Google Patents

Abstract

The utility model relates to an intelligent home control system based on gesture recognition. Including human body detection module, gesture recognition module, main control system chip processing module, data transmission module, Bluetooth address pairing detection module, data receiving module and household equipment, the human body detection module is a human body infrared detection sensor, and the gesture recognition module is an infrared human body gesture sensor , The infrared human gesture sensor is composed of photodiodes and infrared signal transmitters arranged in the four directions of up, down, left and right. The photodiodes are directional sensitive photodiodes, and the directional sensitive photodiodes sense the signal generated by the infrared signal transmitter. Reflect infrared intensity to provide motion detection to convert physical motion information such as speed, direction and distance into digital information. The infrared signal transmitter is an integrated LED infrared signal transmitter, which can not only quickly recognize gestures but also improve recognition accuracy. .

Description

A smart home control system based on gesture recognition

technical field

The utility model belongs to the technical field of smart home equipment, in particular to an intelligent home control system based on gesture recognition.

Background technique

With the development of computer technology and network communication technology, people's living standards have been improved, and the living environment has also been greatly improved. In today's fast-paced life, people are more inclined to pursue a fast and simple life. The emergence of smart homes allows people to control switches, appliances, and doors and windows in their homes through a small gesture to achieve non-contact home control. The current biometric identification technologies mainly include: fingerprint identification, retinal identification, iris identification, palm geometry identification, vein identification and face identification. Compared with other recognition technologies, palm geometry recognition not only has good performance, but also is more convenient to use. It is suitable for situations where the number of users is relatively large, or although users do not use it often, it is easy to accept when using it, such as our utility model—— Smart home system based on gesture recognition. The accuracy of this technique can be very high, while the performance can be flexibly adjusted to suit a fairly wide range of usage requirements. Gesture recognition is widely used and easily integrated into other systems, making it the technology of choice for many biometric projects.

Disadvantages of existing gesture recognition: gestures are very random, different people make the same gesture, and the same person makes different gestures at different times and places. Based on the position of the hand in three-dimensional space, for monocular vision, the image obtained by the computer is the projection of three-dimensional to two-dimensional, and the projection direction is very important. The same gesture will have different hand shapes in different viewing angles. Binocular vision can accurately obtain gestures, which requires very complex calculations, which brings great trouble to real-time processing.

As we all know, the surface of the hand is smooth, and it is easy to produce highlights and shadows under the influence of lighting, and the uncertainty of the hand shape makes it difficult to better segment gestures in complex backgrounds. In the monocular vision dynamic gesture recognition, the occlusion of the hand itself or other targets also brings difficulties to the tracking and recognition of gestures

Utility model content

1. Technical problems to be solved by the utility model

The purpose of the utility model is to solve the problem of inaccurate gesture recognition in the prior art.

2. Technical solutions

In order to achieve the above object, the technical scheme provided by the present utility model is:

The smart home control system based on gesture recognition of the utility model comprises a human body detection module, a gesture recognition module, a main control system chip processing module, a data transmission module, a Bluetooth address pairing detection module, a data receiving module and household equipment. The human body detection module is a human body infrared detection sensor, the human body infrared detection sensor is arranged on the upper end of the gesture recognition device body, the gesture recognition module is an infrared human body gesture sensor, and the infrared human body gesture sensor is arranged on the surface of the gesture recognition device body. The main control system chip processing module is a control chip, the control chip is arranged in the gesture recognition device body, the data transmission module is a signal transmitter, the signal transmitter is arranged on the gesture recognition device body, the human body infrared detection The sensor, the infrared human gesture sensor and the signal transmitter are respectively electrically connected with the control chip.

Preferably, the gesture recognition device body further includes a power interface provided on the side, a display screen and an audio playback part provided on the surface, and the display screen and the audio playback part are respectively electrically connected to the control chip.

Preferably, the data receiving module is a signal receiver, the signal receiver is arranged on the household appliance to be controlled, and the signal receiver is connected to the controller of the household appliance.

Preferably, the body of the gesture recognition device is further provided with a first locking member and a second locking member for fixing.

Preferably, the infrared human gesture sensor is composed of photodiodes and infrared signal transmitters arranged in four directions of up, down, left and right.

3. Beneficial effects

Compared with the prior art, the technical scheme provided by the present utility model has the following beneficial effects:

The smart home control system based on gesture recognition of the utility model comprises a human body detection module, a gesture recognition module, a main control system chip processing module, a data transmission module, a Bluetooth address pairing detection module, a data receiving module and household equipment. The module is a human body infrared detection sensor. The human body infrared detection sensor is arranged on the upper end of the gesture recognition device body. The gesture recognition module is an infrared human gesture sensor. The infrared human gesture sensor is arranged on the surface of the gesture recognition device body. The main control system chip processing module is a control chip. The control chip is arranged in the gesture recognition device body, the data transmission module is a signal transmitter, the signal transmitter is arranged on the gesture recognition device body, the human body infrared detection sensor, the infrared human gesture sensor and the signal transmitter are respectively electrically connected with the control chip, and the infrared The human gesture sensor is composed of photodiodes and infrared signal transmitters arranged in the four directions of up, down, left and right. The photodiodes are directional sensitive photodiodes. The directional sensitive photodiodes sense the reflected infrared rays generated by the infrared signal transmitters. Intensity is used to provide motion detection to convert physical motion information such as speed, direction and distance into digital information. The infrared signal transmitter is an integrated LED infrared signal transmitter, which can not only quickly recognize gestures but also improve the recognition accuracy.

Description of drawings

1 is a schematic structural diagram of a gesture recognition-based smart home control system of the present invention;

2 is a first structural schematic diagram of the gesture recognition device body of the present invention;

FIG. 3 is a second structural schematic diagram of the gesture recognition device body of the present invention.

Description of the labels in the diagram:

100, gesture recognition device body; 110, power supply interface; 120, human body infrared detection sensor; 130, display screen; 140, audio playback part; 150, infrared human body gesture sensor; 160, signal transmitter; 170, control chip; 180, Locking part one; 190. Locking part two;

S100, human body detection module; S200, gesture recognition module; S300, main control system chip processing module; S400, data transmission module; S500, Bluetooth address pairing detection module; S600, data receiving module; S700, household equipment.

Detailed ways

In order to facilitate the understanding of the present utility model, the present utility model will be more fully described below with reference to the relevant drawings, in which several embodiments of the present utility model are given, however, the present utility model can be realized in many different forms, They are not limited to the embodiments described herein, but rather, these embodiments are provided so that this disclosure will be thorough and complete.

It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it may be be directly connected to another element or intervening elements may be present; the terms "vertical", "horizontal", "left", "right" and similar expressions are used herein for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the present invention; the terms used herein in the description of the present invention are only used to describe specific The examples are not intended to limit the invention; as used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Example 1

Referring to accompanying drawings 1 to 2, a gesture recognition-based smart home control system in this embodiment is characterized in that it includes a human body detection module S100, a gesture recognition module S200, a main control system chip processing module S300, and a data transmission module S400, the Bluetooth address pairing detection module S500, the data receiving module S600 and the home equipment S700, the human body detection module S100 is a human body infrared detection sensor 120, the human body infrared detection sensor 120 is arranged on the upper end of the gesture recognition device body 100, and the gesture recognition module S200 is an infrared human body The gesture sensor 150, the infrared human gesture sensor 150 are arranged on the surface of the gesture recognition device body 100, the main control system chip processing module S300 is the control chip 170, the control chip 170 is arranged in the gesture recognition device body 100, and the data transmission module S400 is a signal transmitter 160 , the signal transmitter 160 is disposed on the gesture recognition device body 100 , and the human infrared detection sensor 120 , the infrared human gesture sensor 150 , and the signal transmitter 160 are respectively electrically connected to the control chip 170 .

The gesture recognition device body 100 of this embodiment further includes a power interface 110 disposed on the side, a display screen 130 and an audio playing part 140 disposed on the surface, and the display screen 130 and the audio playing part 140 are respectively electrically connected to the control chip 170 . The data receiving module S600 is a signal receiver, the signal receiver is arranged on the household appliance to be controlled, and the signal receiver is connected with the controller of the household appliance.

The body 100 of the gesture recognition device is further provided with a first locking member 180 and a second locking member 190 for fixing. The infrared human gesture sensor 150 is composed of photodiodes and infrared signal transmitters arranged in four directions of up, down, left and right.

When the user approaches, the human body infrared detection sensor 120 recognizes the human body, the gesture recognition device body 100 exits the sleep state and enters the working state, and the display screen 130 lights up and displays the switch state of the user's household appliances. The audio playback part 140 gives a voice prompt "please input a gesture", the user makes a gesture and the gesture image is transmitted to the control chip 170 by the infrared human gesture sensor 150. The control chip 170 is the STM32F103 main control chip, and the main control chip 170 performs Gesture recognition and analysis. If the recognition is successful, the indicator light turns green and the audio playback part 140 gives a voice prompt "gesture recognition is successful, XX has been successfully turned on"; if the recognition fails, the indicator light turns red and flashes and the audio playback part 140 gives a voice prompt "gesture recognition Failed, please re-enter gesture". After the gesture recognition is successful, the signal transmitter 160 sends a control signal, and the signal receiver receives the control signal and controls the user's home appliance to perform related operations.

The specific method of the above control system is to detect whether the user is approaching through the human body infrared detection sensor 120. When the human body infrared detection sensor 120 detects that the user is approaching, the human body infrared detection sensor 120 transmits a signal to the control chip 170, and the control chip 170 controls the display screen 130 to light up. Start and start the audio playback part 140 to play the prompt, the infrared human gesture sensor 150 starts to recognize the user's gesture, and transmits the recognition result to the control chip 170 through a signal. The household appliances are controlled to work through the signal receiver, and the process of gesture recognition and control of the smart home is completed.

The infrared human gesture sensor 150 of this embodiment specifically recognizes the user's gesture by classifying the user's gesture and binding different signals, and different signals control different electrical appliances to be turned on.

The signal transmitter 160 and the signal receiver in this implementation are Bluetooth transmission. The signal transmitter 160 and the signal receiver use the control chip 170 as the host. The control chip 170 is provided with a Bluetooth address pairing detection module S500 for identifying the signal receiver. pair.

In the signal receiver and the controller of the household appliance, the signal receiver transmits the signal to the controller of the household appliance after receiving the signal, and the controller of the household appliance turns on the household appliance after receiving the signal.

The infrared human gesture sensor 150 of the present embodiment uses photodiodes in four directions to sense the reflected infrared intensity. The photodiodes are orientation-sensitive photodiodes. The orientation-sensitive photodiodes sense the reflected infrared intensity generated by the infrared signal transmitter to provide Motion detection to convert physical motion information such as speed, direction and distance into digital information, and the infrared signal transmitter is an integrated LED infrared signal transmitter.

The IR receive signal path begins with the IR detection of the four photodiodes and ends with an 8-bit proximity result in the PDATA register. The signals from the photodiodes are combined, amplified and offset adjusted to optimize performance. The same four photodiodes are used for gesture operation as well as proximity operation. The diodes are paired to form two signal paths: UP/RIGHT and DOWN1LEFT. Each UP/RIGHT or DOWN/LEFT requires a transition time of 696.6ms. For all four directions, the transition takes twice as long. This parameter is confirmed by design and characterization, and 8 pulses is the recommended driving condition. Control of the Led drive pin LDR is shared between the Proximity and Gesture functions, and when operating under these LED drive conditions, the gesture offset value varies with power supply characteristics and noise. Skew and crosstalk add directly to this value and are system dependent. When the system detects which orientation of the sensitive photodiode responds, the system determines which gesture people have made, which can not only quickly recognize the gesture but also improve the recognition accuracy.

The above-mentioned embodiment only expresses a certain embodiment of the present invention, and its description is more specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention; For personnel, under the premise of not departing from the concept of the present utility model, several deformations and improvements can also be made, and these all belong to the protection scope of the present utility model; therefore, the protection scope of the present utility model patent should be based on the appended claims as allow.

Claims (4)

1. a smart home control system based on gesture recognition, is characterized in that: comprise human body detection module (S100), gesture recognition module (S200), main control system chip processing module (S300), data transmission module (S400), bluetooth An address pairing detection module (S500), a data receiving module (S600) and a home appliance (S700), the human body detection module (S100) is a human body infrared detection sensor (120), and the human body infrared detection sensor (120) is arranged on the gesture The upper end of the recognition device body (100), the gesture recognition module (S200) is an infrared human gesture sensor (150), and the infrared human gesture sensor (150) is arranged on the surface of the gesture recognition device body (100), and the main control system The chip processing module (S300) is a control chip (170), the control chip (170) is arranged in the gesture recognition device body (100), and the data transmission module (S400) is a signal transmitter (160), the signal The transmitter (160) is arranged on the gesture recognition device body (100), and the human body infrared detection sensor (120), the infrared human gesture sensor (150), and the signal transmitter (160) are respectively electrically connected to the control chip (170), The infrared human gesture sensor (150) is composed of photodiodes and infrared signal transmitters arranged in four directions of up, down, left and right. 2. A kind of smart home control system based on gesture recognition according to claim 1, characterized in that: the gesture recognition device body (100) further comprises a power interface (110) arranged on the side, a power supply interface (110) arranged on the surface The display screen (130) and the audio playing part (140), the display screen (130) and the audio playing part (140) are respectively electrically connected with the control chip (170). 3. a kind of smart home control system based on gesture recognition according to claim 2, is characterized in that: described data receiving module (S600) is a signal receiver, and described signal receiver is arranged on the household appliance that needs to be controlled , the signal receiver is connected with the controller of the household appliance. 4. A gesture recognition-based smart home control system according to claim 3, wherein the gesture recognition device body (100) is further provided with a locking member one (180) for fixing and a locking member Part Two (190).

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