CN103428965B - Intelligent LED color-changing lamp based on brainwave control and intelligent control method thereof - Google Patents

Abstract

The invention discloses an intelligent LED color-changing lamp based on brain wave control and its intelligent control method. Dimming unit provides the power supply unit of power supply, and described EEG earphone control unit comprises Mindwave EEG earphone, electroencephalogram sensor module, data processor module, wireless data transmission module, and described LDE light changing unit comprises the signal that contains control chip Transmission processing module, LED driver module, LED dimming lamp. The present invention is based on the data processing algorithm of the Mindwave EEG headset, extracts the degree of concentration and the degree of meditation as the control parameters of the lamp, and uses wireless communication to collect the EEG signal and intelligently control the LED color-changing lamp. The invention increases the intelligence of home furnishing, can effectively cooperate with medical rehabilitation treatment, and improves concentration and meditation.

Description

An intelligent LED color-changing lamp based on brainwave control and its intelligent control method

technical field

The invention relates to an intelligent LED color-changing lamp based on brainwave control and an intelligent control method thereof, which are mainly used for auxiliary rehabilitation treatment of ADHD, tic disorder and other diseases and in the application field of smart home.

Background technique

There are electrical phenomena in living things. For the brain, brain cells are "tiny power stations" in the brain. Neuroelectric activity, whose frequency ranges from 1 to 30 times per second, can be divided into four bands, namely δ (1-3Hz), θ (4-7Hz), α (8-13Hz), β (14 -30Hz), and the differences in human activities can be reflected in these four brain wave signals. With the development of EEG technology, EEG signals can be applied in various fields, such as biological detection, medical rehabilitation, mind games, smart home, etc.

The color-changing LED lights designed based on brainwaves can assist in the medical field to treat children with hyperactivity, emotional disability and other cases of mind control, and can also increase the human-computer interaction in smart homes. People can use brainwaves to relax and concentrate, control the soft changes of lights and the lights on and off. The LED lamp in the prior art cannot change with the change of the brain wave signal.

Contents of the invention

Aiming at the above-mentioned problems in the prior art, the present invention provides an intelligent LED color-changing lamp and an intelligent control method thereof that control the color change of the LED lamp according to extracted signals of different EEG concentrations and meditation degrees.

Technical scheme of the present invention is:

An intelligent LED color-changing lamp based on brainwave control, comprising an EEG earphone control unit, an LDE dimming unit and a power supply unit for providing power to the EEG earphone control unit and the LDE dimming unit, the EEG earphone The control unit includes a Mindwave EEG headset, an EEG sensor module, a data processor module, and a wireless data transmission module. The LDE dimming unit includes a signal transmission processing module including a control chip, an LED driver module, and an LED dimming lamp.

The Mindwave EEG earphone is used to receive the EEG signal and transmit the received EEG signal to the data processor module through the EEG sensor module, and the data processor module is used to perform interference filtering on the input signal of the EEG sensor module As well as the extraction of EEG signal features, the wireless data transmission module receives the EEG signal processed by the data processor module and transmits the signal to the signal transmission processing module in the LDE dimming unit.

The signal transmission processing module is used to receive the EEG signal transmitted by the EEG earphone control unit, extract the degree of concentration and the degree of meditation as the control parameters of the lamp, and send the processed data to the LED driver module, based on the strength of the signal The LED driver module drives the LED dimming lamp to emit light of different colors and switch between bright and dark.

The wireless data transmission module is a bluetooth data transmission module, and the bluetooth data transmission module has two working modes, i.e. data transmission mode and remote control mode; in the data transmission mode: the LED driver module is connected with the serial port of the control chip to control the In the remote control mode: the LED driver module is not connected to the serial port of the control chip, but directly connected to the LED dimming lamp through the I/O port of the chip, and the color change of the LED dimming lamp is simply controlled but does not control its brightness.

An intelligent control method of an intelligent LED color-changing lamp based on brainwave control. This method is based on the data processing algorithm of Mindwave EEG headsets, extracts concentration and meditation as the control parameters of the lamp, and uses wireless communication to monitor EEG signals. Acquisition and intelligent control of LED color-changing lights include the following steps:

(1) The Mindwave EEG headset receives the EEG signal and transmits the received EEG signal to the data processor module through the EEG sensor module; the data processor module performs interference filtering on the input signal of the EEG sensor module and the EEG signal For feature extraction, the wireless data transmission module receives the EEG signal processed by the data processor module and transmits the signal to the signal transmission processing module in the LDE dimming unit.

(2) The signal transmission and processing module receives the EEG signal transmitted by the EEG headset control unit, extracts the required control parameters through the signal processing optimization algorithm and converts them into actual control signals, and extracts the degree of concentration and meditation as the lamp's Control the parameters and send the processed data to the LED driver module. Based on the strength of the signal, the LED driver module drives the LED dimmer to emit different colors of light and switch between light and dark.

The beneficial effects of the present invention are:

1. Increase the intelligence of the home, integrate the EEG technology with the traditional home, and let the light change with the change of attention and mood;

2. It can effectively cooperate with the medical rehabilitation treatment of children with ADHD, emotional disability, and the intellectual recovery of the elderly;

3. Develop human potential intelligence, improve concentration and meditation.

Description of drawings

Fig. 1 is a system block diagram of an intelligent LED color-changing lamp based on brain wave control according to the present invention.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figure 1, an intelligent LED color-changing lamp based on brainwave control of the present invention includes an EEG headset control unit, an LDE dimming unit, and a power supply unit for providing power to the EEG headset control unit and the LDE dimming unit, The EEG headset control unit includes a Mindwave EEG headset, an EEG sensor module, a data processor module, and a wireless data transmission module. The LDE dimming unit includes a signal transmission processing module including a control chip, an LED driver module, and an LED dimming lamp.

Mindwave EEG earphones are used to receive EEG signals and transmit the received EEG signals to the data processor module through the EEG sensor module, and the data processor module is used for interference filtering and EEG Extraction of signal features, the wireless data transmission module receives the EEG signal processed by the data processor module and transmits the signal to the signal transmission processing module in the LDE dimming unit.

The signal transmission processing module is used to receive the EEG signal transmitted by the EEG headset control unit, extract the degree of concentration and the degree of meditation as the control parameters of the lamp, and send the processed data to the LED driver module, based on the difference in signal strength , the LED drive module drives the LED dimming lamp to emit light of different colors and switch between light and dark.

The wireless data transmission module is a Bluetooth data transmission module, and the Bluetooth data transmission module has two working modes, namely data transmission mode and remote control mode; in data transmission mode: the LED driver module is connected to the serial port of the control chip to control the color of the LED dimming lamp And the change of light and shade; in the remote control mode: the LED driver module is not connected to the serial port of the control chip, but directly connected to the LED dimming lamp through the I/O port of the chip, which simply controls the color change of the LED dimming lamp but does not control its brightness.

The present invention is an intelligent control method of an intelligent LED color-changing lamp based on brain wave control. Based on the data processing algorithm of the Mindwave EEG earphone, the degree of concentration and the degree of meditation are extracted as the control parameters of the lamp, and the EEG signal is detected by wireless communication. Acquisition and intelligent control of LED color-changing lights include the following steps:

(1) The Mindwave EEG headset receives the EEG signal and transmits the received EEG signal to the data processor module through the EEG sensor module; the data processor module performs interference filtering on the input signal of the EEG sensor module and the EEG signal For feature extraction, the wireless data transmission module receives the EEG signal processed by the data processor module and transmits the signal to the signal transmission processing module in the LDE dimming unit.

(2) The signal transmission and processing module receives the EEG signal transmitted by the EEG headset control unit, extracts the required control parameters through the signal processing optimization algorithm and converts them into actual control signals, and extracts the degree of concentration and meditation as the lamp's Control the parameters and send the processed data to the LED driver module. Based on the strength of the signal, the LED driver module drives the LED dimmer to emit different colors of light and switch between light and dark.

The specific process of the intelligent control method of an intelligent LED color-changing lamp based on brain wave control of the present invention is as follows:

The Mindwave EEG headset sends out 512 small data packets and 1 large data packet every second. All data enters the virtual serial port set by labview through Bluetooth wireless transmission. For the data packets entering the serial port, the entire The data packet extracts effective data, and the ultimate goal is to extract two effective characteristic signals of concentration (Attention) and meditation (Meditation).

The process of extracting the above-mentioned degree of concentration and meditation is as follows: firstly, the only large data packet is found among the 513 data packets. For all large data packets, the data format is as follows: AA AA 20 02 C8 83 18 00 31 6C 00 BF 2E 00 5F 58 00 73 8F 00 21 FC 00 32 CF 00 1D 92 00 18 1E 04 00 05 00 4B. There are a total of 36 bytes. Find the two numbers 04 and 05 in turn. After 04 is the required degree of concentration, and after 05 is the required degree of meditation. Find all 20. The 20 here uses hexadecimal, which is actually 0x20, which is 32 when converted to decimal. According to the standard large data packet format: AA AA 20 02 C8 83 18 00 31 6C 00 BF 2E 00 5F 58 00 73 8F 00 21 FC 00 32 CF 00 1D 92 00 18 1E 04 00 05 00 4B. The 20 in the third place here is used as a sign to judge the large data packet, and there may also be 20 in other small data packets, so strict screening must be carried out next. Perform a process on all absolute addresses that meet the conditions, that is, the value is 0x20: move them back by 29 bits to start screening. In the standard large data packet: AA AA 20 02 C8 83 18 00 31 6C 00 BF 2E 00 5F 58 00 73 8F 00 21 FC 00 32 CF 00 1D 92 00 18 1E 04 00 05 00 4B. It can be seen that 0x20 is moved 29 bits backward to 0x04, which means that the next bit is concentration. Move all 29-bit numbers after 0x20, and then judge whether these numbers are 0x04, and take out the address of 0x04. The taken out address is a relative address, not an absolute address in all data. As long as there is a value of 0x04 in this array, take out their addresses. Now we get the relative address of 0x04 that meets the conditions, and under our settings, there is only one such address per second. Through this relative address, you can find the absolute address of the serial port input array that meets the condition 0x04 every second. Finally, adding 30 to this absolute address is the required concentration, and adding 32 is the required meditation.

After obtaining the required concentration and meditation, the next step is to process the values. Taking the concentration processing paradigm as an example, the numerical value enters the processing subroutine. Since the concentration value is between 0 and 100, after many tests, the concentration control interval is divided according to its own requirements, and the corresponding Bluetooth AT command, use dimming control while bluetooth command is output.

The wireless data transmission module uses a multifunctional Bluetooth chip with two working modes: data transmission mode and remote control mode. Both modes will be fully utilized in the present invention. Data transmission mode: connect with the serial port of the control chip to control the color and light and dark changes of the LED dimming lamp; remote control mode: do not connect with the control chip, directly connect with the LED light through the I/O port of the chip, which can realize simple Control the color change of the LED dimming light but not its brightness. The remote control mode is used as the backup and extension of the data transmission mode: even in the case of data transmission mode failure, the remote control mode can still ensure the realization of most functions of the system; on the other hand, because many control I/O ports are reserved, it can also Use its remote control function to control more additional modules, providing an upgrade space for subsequent expansion functions.

After obtaining the control signal through the Bluetooth communication module, the control chip communicates with the RXD and TXD signal lines of the main control chip through its own TXD and RXD. After the serial port of the control chip receives the uploaded data, it effectively recognizes the Bluetooth AT command sent, and then completes the corresponding PWM signal output operation to the I/O port of the microcontroller.

The present invention uses a low-power single-chip microcomputer as the main control processor, extracts the concentration degree and meditation degree as the control parameters of the lamp based on the data processing algorithm of the Mindwave EEG headset, and uses the short-distance wireless communication method of Bluetooth to perform EEG signal detection. Acquisition and LED intelligent control. The driving capability of the I/O port of the microcontroller is very limited, especially the pull-up current, so in order to effectively drive the LED, a driving amplifier circuit must be added. This circuit adopts NPN type triode, the emitter is grounded, and the collector terminal is placed with LED lights and current-limiting high-power resistors. When the base voltage of the NPN triode is greater than the conduction voltage, the triode is in the conduction state and the light is on; when the base voltage of the triode is lower than the conduction voltage, the triode is in the cut-off state and the light is off.

Regarding the power supply of the circuit, the power supply unit in the present invention uses an energy-saving lithium battery as a power source, which conforms to the characteristics of energy saving and miniaturization of the present invention. At the same time, a portable USB interface solution is adopted for the lithium battery charging method. The power management chip is Maxim's MAX1811. current standard. The charging status indication function of the chip can judge the current battery power status by adding a status indicator light. During the charging process, when the maximum charging voltage is not reached, the MAX1811 charges the lithium battery with a constant current; when the maximum charging voltage is reached, it is charged with a constant voltage, which enhances the overvoltage protection of the lithium battery.

The present invention uses a low-power single-chip microcomputer as the main control processor, extracts the concentration degree and meditation degree as the control parameters of the lamp based on the data processing algorithm of the Mindwave EEG headset, and uses the short-distance wireless communication method of Bluetooth to perform EEG signal detection. Acquisition and LED intelligent control.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (5)

1. An intelligent LED color-changing lamp based on brainwave control, characterized in that: it comprises an EEG earphone control unit, an LDE light-changing unit and a power supply unit for providing power to the EEG earphone control unit and the LDE light-changing unit , the EEG earphone control unit includes a Mindwave EEG earphone, an EEG sensor module, a data processor module, and a wireless data transmission module, and the LDE dimming unit includes a signal transmission processing module including a control chip, an LED driver module, LED dimming lamp; the signal transmission processing module is used to receive the EEG signal transmitted by the EEG earphone control unit, extract concentration and meditation as the control parameters of the lamp, and send the processed data to the LED driver module , based on the difference in signal strength, the LED driver module drives the LED dimming lamp to emit light of different colors and switch between light and dark; The process of extracting the degree of concentration and meditation is as follows: first find the only large data packet among the 513 data packets, and its standard data format is: AA AA 20 02 C8 83 18 00 31 6C 00 BF 2E 00 5F 58 00 73 8F 00 21 FC 00 32 CF 00 1D 92 00 18 1E 04 00 05 00 4B, after the number 04 is the required degree of concentration, and after the number 05 is the required degree of meditation; according to the above-mentioned standard large data packet format, the first The three-digit 20 is used as a sign for judging the large data packet; in the above-mentioned standard large data packet, all the absolute addresses with a value of 0x20 are moved back by 29 bits, and it is judged whether the obtained number is 0x04, and the relative address of 0x04 is taken out. Get the relative address of 0x04 that meets the conditions, and set only one relative address per second, and the next bit is the concentration; find the absolute address of 0x04 that meets the conditions in the serial port input array of each second through the relative address ;Finally, add 30 on the basis of the absolute address to get the required degree of concentration, and add 32 to get the required degree of meditation. 2. An intelligent LED color-changing lamp based on brain wave control according to claim 1, characterized in that: the Mindwave EEG earphone is used to receive EEG signals and transmit the received EEG signals through the EEG sensor module For the data processor module, the data processor module is used to filter the input signal of the brainwave sensor module and extract the characteristics of the brainwave signal, and the wireless data transmission module receives the brainwave signal processed by the data processor module signal and transmit the signal to the signal transmission processing module in the LDE dimming unit. 3. An intelligent LED color-changing lamp based on brainwave control according to claim 1, characterized in that: the wireless data transmission module is a Bluetooth data transmission module, and the Bluetooth data transmission module has two working modes, namely Data transmission mode and remote control mode; in data transmission mode: the LED driver module is connected to the serial port of the control chip to control the color and brightness change of the LED dimming lamp; in remote control mode: the LED driver module is not connected to the serial port of the control chip, directly through The I/O port that comes with the chip is connected to the LED dimming light, which simply controls the color change of the LED dimming light but does not control its brightness. 4. An intelligent control method of an intelligent LED color-changing lamp based on brain wave control, characterized in that: based on the data processing algorithm of Mindwave EEG earphones, concentration and meditation are extracted as the control parameters of the lamp, and wireless communication is used to carry out The collection of EEG signals and the intelligent control of LED color-changing lights include the following steps: (1) The Mindwave EEG headset receives the EEG signal and transmits the received EEG signal to the data processor module through the EEG sensor module; the data processor module performs interference filtering on the input signal of the EEG sensor module and the EEG signal Feature extraction, the wireless data transmission module receives the EEG signal processed by the data processor module and transmits the signal to the signal transmission processing module in the LDE dimming unit; (2) The signal transmission and processing module receives the EEG signal transmitted by the EEG headset control unit, extracts the required control parameters through the signal processing optimization algorithm and converts them into actual control signals, and extracts the degree of concentration and meditation as the lamp's Control the parameters and send the processed data to the LED driver module. Based on the strength of the signal, the LED driver module drives the LED dimmer to emit different colors of light and switch between light and dark; The process of extracting the degree of concentration and meditation is as follows: first find the only large data packet among the 513 data packets, and its standard data format is: AA AA 20 02 C8 83 18 00 31 6C 00 BF 2E 00 5F 58 00 73 8F 00 21 FC 00 32 CF 00 1D 92 00 18 1E 04 00 05 00 4B, after the number 04 is the required degree of concentration, and after the number 05 is the required degree of meditation; according to the above-mentioned standard large data packet format, the first The three-digit 20 is used as a sign for judging the large data packet; in the above-mentioned standard large data packet, all the absolute addresses with a value of 0x20 are moved back by 29 bits, and it is judged whether the obtained number is 0x04, and the relative address of 0x04 is taken out. Get the relative address of 0x04 that meets the conditions, and set only one relative address per second, and the next bit is the concentration; find the absolute address of 0x04 that meets the conditions in the serial port input array of each second through the relative address ;Finally, add 30 on the basis of the absolute address to get the required degree of concentration, and add 32 to get the required degree of meditation. 5. The intelligent control method of an intelligent LED color-changing lamp based on brain wave control according to claim 4, characterized in that: the wireless data transmission module is a Bluetooth data transmission module, and the Bluetooth data transmission module has two types Working mode, that is, data transmission mode and remote control mode; in data transmission mode: the LED driver module is connected to the serial port of the control chip to control the color and brightness change of the LED dimming lamp; in remote control mode: the LED driver module is not connected to the serial port of the control chip Connect, directly connect with the LED dimming lamp through the I/O port that comes with the chip, simply control the color change of the LED dimming lamp but not control its brightness.