CN102722251A - Multimedia feedback control system based on physiological signals - Google Patents

Abstract

The present invention provides a multimedia feedback control system based on physiological signals, including an optical physiological feedback multimedia control system and a multimedia playback device. The optical physiological feedback multimedia control system includes a processor, a wireless transmission unit, a light source emission drive circuit unit, Light sensor receiving circuit unit, sound driving unit, audio playback unit, light source transmitter and light sensor, the wireless transmission unit, light source emitting driving circuit unit, light sensor receiving circuit unit, sound driving unit, audio The playback unit, the light source emitter and the light sensor are connected to the processor.

Description

Multimedia Feedback Control System Based on Physiological Signals

technical field

The invention relates to a multimedia feedback control system, in particular to a physiological signal-based multimedia feedback control system.

Background technique

The multimedia playback devices in the prior art usually use manual control or random playback. When in use, the multimedia playing device stores multiple audio or video in order and plays them in order or in a random manner. However, the above playback methods cannot exactly match the current mental or physical conditions of the user. For example, when a person wants to relax, if random playback is used, music with a strong rhythm may be played, which may cause adverse effects. Therefore, when the user wants to hear a specific type of music, he needs to operate the multimedia player to make a specific selection, which is cumbersome and inconvenient to operate.

Contents of the invention

In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a multimedia feedback control system based on physiological signals, including an optical physiological feedback multimedia control system and a multimedia playback device. The optical physiological feedback multimedia control system includes a processor, a wireless Transmission unit, light source emission driving circuit unit, light sensor receiving circuit unit, sound driving unit, audio playback unit, light source transmitter and light sensor, the wireless transmission unit, light source emission driving circuit unit, light sensor The receiving circuit unit, the sound driving unit, the audio playing unit, the light source transmitter and the light sensor are connected to the processor,

The light source emitter is used to emit light, and the light sensor is used to capture the light and send the light intensity change amount of the light to the processor;

The processor is used to control the light source driving circuit to drive the light source emitter, and the processor is also used to control the light sensor receiving circuit unit to capture the light intensity change measured by the light sensor, and then calculate the user's heart rate change ;

The wireless transmission unit is used to send control signals to the multimedia playback device under the control of the processor, so as to control the multimedia playback device;

A light source emission drive circuit unit, used to drive the light emitter to emit light;

The light sensor receiving circuit unit is used to capture the light intensity value measured by the light sensor;

Audio playback unit, used for audio playback;

The sound drive unit is used to drive the audio playback unit for audio playback;

The wireless transmission unit is connected to the multimedia playback device, the multimedia playback device stores audio data, and the multimedia playback device sends audio data to the wireless transmission unit, and the wireless transmission unit is controlled by the processor The audio data sent by the multimedia playing device is accepted.

A further improvement of the present invention is that the physiological signal-based multimedia feedback control system is also provided with a data input unit and a data storage unit, the data input unit is used to input the processor of the control signal, and the data storage unit is used to perform For data storage, the data input unit and the data storage unit are connected to the processor.

A further improvement of the present invention is that the physiological signal-based multimedia feedback control system is further provided with a display unit for displaying menus or detection results of the light emitter and light sensor.

A further improvement of the present invention is that the light source transmitter of the physiological signal-based multimedia feedback control system is provided with at least one of an infrared light source or a near-infrared light source.

A further improvement of the present invention is that the data input unit is further configured to generate setting parameters according to input control signals.

A further improvement of the present invention is that the wireless transmission unit uses one of infrared, Bluetooth, ZigBee, Wi-Fi, and WiMAX for data transmission.

A further improvement of the present invention is that the data storage unit adopts one of RAM, ROM, USB flash disk, and hard disk.

Compared with the prior art, the multimedia playback device of the physiological signal-based multimedia feedback control system of the present invention is wirelessly connected to the wireless transmission unit of the optical physiological feedback multimedia control system. The light source emitter and the sensor of the optical physiological feedback multimedia control system are clamped on both sides of the user's earlobe, and the light source emitter and the sensor detect the change of the user's heart rate. The processor of the optical physiological feedback multimedia control system controls the multimedia playback device to transmit suitable audio to the optical physiological feedback multimedia control system according to the detection result, and plays the audio through the audio playback unit.

Description of drawings

FIG. 1 is a schematic diagram of the composition of the physiological signal-based multimedia feedback control system of the present invention.

Fig. 2 is a structural block diagram of the physiological signal-based multimedia feedback control system of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Referring to FIG. 1 and FIG. 2 , the present invention provides a physiological signal-based multimedia feedback control system, including an optical physiological feedback multimedia control system 10 and a multimedia player 20 . The optical physiological feedback multimedia control system 10 can be connected to the multimedia playback device 20 through wireless transmission to transmit audio data or multimedia data, and issue multimedia control signals.

The optical physiological feedback multimedia control system 10 includes a processor 101, a data input unit 102, a data storage unit 103, a wireless transmission unit 104, a display unit 105, a light source emission driving circuit unit 106, a light sensor receiving circuit unit 107, a sound The driving unit 108 , the audio playing unit 109 , the light source emitter 111 and the light sensor 113 .

The light source emitter 111 and the light sensor 113 are used to detect and send the light intensity change to the processor 101 . The light source emitter 111 and the light sensor 113 are clamped on both sides of the user's earlobe, and the light source emitter 111 sends light from the outside of the user's earlobe through an infrared light source or a near-infrared light source to enter the user's earlobe, and The light sensor 113 on the opposite side of the earlobe receives the light penetrating the earlobe to obtain the change in the light intensity of the infrared light source or the near-infrared light source. As the blood circulates under the action of the heart, the blood vessels of the earlobe will expand. , which in turn affects the light source intensity of the infrared light source or the near-infrared light source, so the circulation of the heart blood can be detected by the light source emitter 111 and the light sensor 113, and then the user's heart rate change can be judged by physiological signals such as the heart rate change. mental state of the person. The light source transmitter 111 and the light sensor 113 detect the light intensity change of the near-infrared light source and send the light intensity change to the processor 101 . When the user's heart rate is high, the user is in a state of mental tension, and when the user's heart rate is low, the user is in a state of mental relaxation. The user can set a preset value for the optical physiological feedback multimedia control system 10. When the user's heart rate is greater than the set preset value, the audio playback unit 109 will play more exciting music. At a preset value, the audio playing unit 109 plays relatively soothing music. The optical physiological feedback multimedia control system 10 dynamically selects the next suitable multimedia or music type to play according to the change of the user's heart rate.

The processor 101 is used to control the light source driving circuit 106 and the light sensor receiving circuit 107 to drive the light source emitter 111 and the light sensor 113, and receive the light intensity change amount sent by the light source emitter 111 and the light sensor 113 to The user's heart rate change is calculated, and the user's current mental state is judged by the heart rate change, and a multimedia control signal is sent to the external multimedia playback device 20 .

The data input unit 102 is used for inputting control signals. The data input unit 102 of the present invention may adopt keys connected to the processor 101, a mechanical keyboard, a touch screen or other devices for the user to input control signals. The data input unit 102 is used to set parameters such as volume adjustment and playback rate of the multimedia feedback control system based on electroencephalogram signals of the present invention, and perform operation controls such as start, tentative, and shutdown. The data input unit 102 generates setting parameters after parameter setting, and stores them in the data storage unit 103 under the control of the processor 101 .

The data storage unit 103 is used for storing data, and the data may include data such as setting parameters, measured light intensity changes, heart rate changes, audio data or multimedia data. It can be understood that the data storage unit 103 can be a device that can be used for data storage such as RAM (random access memory, random access memory), ROM (Read-Only Memory, read-only memory), USB flash disk (USB flash disk) or hard disk. .

The wireless transmission unit 104 is configured to send a control signal to the multimedia playing device 20 under the control of the processor 101 to control the multimedia playing device 20 . The wireless transmission unit 104 is also used for receiving the audio data sent by the multimedia playback device 20 and performing audio playback through the sound driving unit 107 under the control of the processor 101 . It can be understood that the wireless transmission unit 104 can use infrared, Bluetooth, ZigBee, 2G, 2.5G, 2.75G, 3G, Wi-Fi (wireless fidelity) or WiMAX (Worldwide Interoperability for Microwave Access, global microwave interconnection access), etc. Wireless transmission technology transmits control signals and data. The wireless transmission unit 104 can also be used to send multimedia control signals to the external multimedia player 20 for multimedia control actions, and control the external multimedia player 20 to upload or download multimedia data or audio data.

The display unit 105 is used for displaying related values such as menus or detection results of the light emitter 111 and the light sensor 113 .

The light source emission driving circuit unit 106 is used to drive the light emitter 111 .

The light sensor receiving circuit unit 107 is used to capture the intensity of light sources of different wavelengths measured by the light sensor 113 .

The sound driving unit 108 is used to drive the audio playing unit 109 of the multimedia control system for optical physiological feedback.

The audio playing unit 109 is used for playing audio.

The light source emitter 111 can be near-infrared light source or infrared light source or more than two groups of light source emitting elements with different wavelengths, such as Light Emitting Diodes (Light Emitting Diodes), Laser Diodes (Laser Diodes) and the like. The sensor 113 is a light sensor of various shapes for receiving near-infrared light or red light, such as Silicon Photodiodes, Avalanche Photodiodes, Charge-Coupled Devices, etc. .

The multimedia playing device 20 can be a mobile phone, a notebook computer, a tablet computer, a wireless player and the like that can play multimedia. The multimedia playing device 20 can be used to store personal setting information data, multimedia data and audio data.

When using the physiological signal-based multimedia feedback control system of the present invention, the multimedia playback device 20 is wirelessly connected to the wireless transmission unit 104 of the optical physiological feedback multimedia control system 10 . The light source emitter 111 and the sensor 113 of the optical physiological feedback multimedia control system 10 are clamped on both sides of the user's earlobe, and the light source emitter 111 and the sensor 113 detect the change of the user's heart rate. The processor 101 of the optical physiological feedback multimedia control system 10 controls the multimedia playback device 20 to transmit appropriate audio to the optical physiological feedback multimedia control system 10 according to the detection result, and plays the audio through the audio playback unit 109 .

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deduction or replacement can be made, which should be regarded as belonging to the protection scope of the present invention.

Claims (7)

1. A kind of multimedia feedback control system based on physiological signal, it is characterized in that: comprise optical type physiological feedback multimedia control system and multimedia player, described optical type physiological feedback multimedia control system comprises processor, wireless transmission unit, light source emission drive Circuit unit, light sensor receiving circuit unit, sound drive unit, audio playback unit, light source transmitter and light sensor, the wireless transmission unit, light source transmitting drive circuit unit, light sensor receiving circuit unit, sound drive A unit, an audio playback unit, a light source emitter and a light sensor are connected to the processor, The light source emitter is used to emit light, and the light sensor is used to capture the light and send the light intensity change amount of the light to the processor; The processor is used to control the light source driving circuit to drive the light source emitter, and the processor is also used to control the light sensor receiving circuit unit to capture the light intensity change measured by the light sensor, and then calculate the user's heart rate change ; The wireless transmission unit is used to send control signals to the multimedia playback device under the control of the processor, so as to control the multimedia playback device; A light source emission drive circuit unit, used to drive the light emitter to emit light; The light sensor receiving circuit unit is used to capture the light intensity value measured by the light sensor; Audio playback unit, used for audio playback; The sound drive unit is used to drive the audio playback unit for audio playback; The wireless transmission unit is connected to the multimedia playback device, the multimedia playback device stores audio data, and the multimedia playback device sends audio data to the wireless transmission unit, and the wireless transmission unit is controlled by the processor The audio data sent by the multimedia playing device is accepted. 2. according to the described multimedia feedback control system based on physiological signal of claim 1, it is characterized in that: the described multimedia feedback control system based on physiological signal is also provided with data input unit and data storage unit, and described data input unit is used for inputting The control signal is sent to the processor, the data storage unit is used for data storage, and the data input unit and the data storage unit are connected to the processor. 3. according to the described multimedia feedback control system based on physiological signal of claim 1, it is characterized in that: the described multimedia feedback control system based on physiological signal is also provided with display unit, and described display unit is used for display menu or light emitter and The detection result of the light sensor. 4. The physiological signal-based multimedia feedback control system according to claim 1, wherein the light source transmitter of the physiological signal-based multimedia feedback control system is at least provided with one of an infrared light source or a near-infrared light source. 5. The physiological signal-based multimedia feedback control system according to claim 2, characterized in that: the data input unit is also used to generate setting parameters according to the input control signal. 6. The multimedia feedback control system based on physiological signals according to claim 1, wherein the wireless transmission unit uses one of infrared, Bluetooth, ZigBee, Wi-Fi, and WiMAX for data transmission. 7. The physiological signal-based multimedia feedback control system according to claim 2, wherein the data storage unit is one of RAM, ROM, USB flash disk, and hard disk.

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