如何使用红外传感器感应眼睛的运动并控制LED

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描述

第1步:构造

红外传感器

我使用了两个传感器QTR-1A进行眼睛跟踪。

组件

SparkFun Arduino Pro Mini 328-5V/16MHz

Adafruit LiIon/LiPoly背包Pro Trinket/ItsyBitsy附加组件

LiPo电池

NeoPixel条

QTR-1A反射传感器

步骤2:NeoPixel LED眼球

使用NeoPixel LED胶带。 LED是68个单位。

LED用双面胶带固定在碗上并进行了布线。

步骤3:传感器单元

我使用了两个传感器QTR-1A进行眼睛跟踪。将QTR-1A放在塑料片上,其间距约为眼睛的宽度。

分别用夹子将传感器部分和微控制器部分固定到眼镜上。

第4步:Arduino代码

当虹膜接近一个传感器时,反射光会减少,传感器值会增加。相反,当虹膜移开时,反射光增加,而光反射器的传感器值减小。

LED眼球瞳孔的左右移动感测到一个传感器值的增大和减小。并控制它。闪烁时,两个传感器的值都会减小,因此,如果两个传感器的值同时减小,LED眼球的眼睑就会下降。

我使用了以下库。

QTRsensors:https://github.com/pololu/qtr-sensors-arduino

Adafruit_NeoPixel:https://github.com/adafruit/Adafruit_NeoPixel

#include

#include

#define NUM_SENSORS 2 // number of sensors used

#define NUM_SAMPLES_PER_SENSOR 10 // averaging

#define EMITTER_PIN QTR_NO_EMITTER_PIN

int iniSensorValL, sensorValL;

int iniSensorValR, sensorValR;

#define PIN A3

Adafruit_NeoPixel led = Adafruit_NeoPixel(68, PIN, NEO_GRB + NEO_KHZ800);

int blackNum = 24;

int pupilNum = 12;

uint32_t color;

int brightness = 40;

byte eyeColor;

int LR =7;

boolean lid = false;

int cnt = 0;

//Black eye L&R animation

int blackLED[15][24] = {{12,32,35,55,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68},

{12,13,31,36,54,55,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68},

{11,13,14,30,37,53,54,56,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68},

{10,11,14,15,29,38,52,53,56,57,68,68,68,68,68,68,68,68,68,68,68,68,68,68},

{ 9,10,11,12,15,16,28,33,34,39,51,52,55,56,57,58,68,68,68,68,68,68,68,68},

{ 0, 8, 9,10,11,12,13,16,17,27,32,35,40,50,51,54,55,56,57,58,59,67,68,68},

{ 0, 1, 7, 8, 9,10,13,14,17,18,26,31,36,41,49,50,53,54,57,58,59,60,66,67},

{ 1, 2, 6, 7, 8, 9,14,15,18,19,25,30,37,42,48,49,52,53,58,59,60,61,65,66},

{ 2, 3, 5, 6, 7, 8,15,16,19,20,24,29,38,43,47,48,51,52,59,60,61,62,64,65},

{ 3, 4, 5, 6, 7,16,17,20,21,23,28,39,44,46,47,50,51,60,61,62,63,64,68,68},

{ 4, 5, 6,17,18,21,22,27,40,45,46,49,50,61,62,63,68,68,68,68,68,68,68,68},

{ 4, 5,18,19,26,41,48,49,62,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68},

{ 4,19,20,25,42,47,48,63,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68},

{20,21,24,43,46,47,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68},

{21,23,44,46,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68,68}};

//pupil L&R animation

int pupilLED[15][12] = {{33,34,68,68,68,68,68,68,68,68,68,68},

{32,33,34,35,68,68,68,68,68,68,68,68},

{12,31,32,33,34,35,36,55,68,68,68,68},

{12,13,30,31,32,33,34,35,36,37,54,55},

{13,14,29,30,31,32,35,36,37,38,53,54},

{14,15,28,29,30,31,36,37,38,39,52,53},

{15,16,27,28,29,30,37,38,39,40,51,52},

{16,17,26,27,28,29,38,39,40,41,50,51},

{17,18,25,26,27,28,39,40,41,42,49,50},

{18,19,24,25,26,27,40,41,42,43,48,49},

{19,20,23,24,25,26,41,42,43,44,47,48},

{20,21,22,23,24,25,42,43,44,45,46,47},

{21,22,23,24,43,44,45,46,68,68,68,68},

{22,23,44,45,68,68,68,68,68,68,68,68},

{22,45,68,68,68,68,68,68,68,68,68,68}};

//Blink animation

int eyelid = 0;

int eyelidNum[8] = {0,4,8,16,24,34,44,56};

int eyelidLED[56] = {64,65,66,67,58,59,60,61,56,57,62,63,49,50,51,52,47,48,53,54,38,39,40,41,46,55,36,37,42,43,26,27,28,29,35,44,24,25,30,31,15,16,17,18,34,45,23,32,13,14,19,20,6,7,8,9};

QTRSensorsAnalog qtra((unsigned char[]) {0, 1}, NUM_SENSORS, NUM_SAMPLES_PER_SENSOR, EMITTER_PIN);

unsigned int sensorValues[NUM_SENSORS];

void blink(int eyelid, int LR) {

if (eyelid != 8){

//Pewter

for(uint16_t i=0; iled.setPixelColor(i, led.Color(66, 66, 66));

}

//Black eye

for(uint16_t i=0; iled.setPixelColor(blackLED[LR][i], color);

}

//pupil

for(uint16_t i=0; iled.setPixelColor(pupilLED[LR][i], led.Color(0, 0, 66));

}

//eyelid

for(int i=0; i 《 eyelidNum[eyelid]; i++) {

led.setPixelColor(eyelidLED[i], 0);

}

} else if (eyelid == 8){

led.clear();

}

led.show();

}

void setup() {

Serial.begin(115200);

led.begin();

led.setBrightness(brightness); // Initial Brightness 40

led.show(); // Initialize all pixels to ‘off’

color = led.Color(0, 177, 55); //pupil color

delay(100);

qtra.read(sensorValues);

iniSensorValL = sensorValues[0];

iniSensorValR = sensorValues[1];

blink(eyelid, LR);

}

void loop() {

//QTR - 1A sensor value

qtra.read(sensorValues);

sensorValL = sensorValues[0];

sensorValR = sensorValues[1];

double rasioL = (double)sensorValL / iniSensorValL;

double rasioR = (double)sensorValR / iniSensorValR;

Serial.print(rasioL);

Serial.print(“ ”);

Serial.println(rasioR);

if(rasioL 》 0.985 && rasioR 《 0.985){ //right

for(int i = LR; i 《 12; i++){

blink(0, i);

delay(40);

LR = i;

}

}else if(rasioL 《 0.985 && rasioR 》 0.985){ //left

for(int i=LR; i》2; i--){

blink(0, i);

delay(40);

LR = i;

}

}else if(lid == false && rasioL 《 0.96 && rasioR 《 0.96){ //Blinking close

for(int i = 1; i 《 9; i++){

blink(i, LR);

delay(40);

lid = true;

}

}else if(lid == true && rasioL 》 0.96 && rasioR 》 0.96){ //Blinking open

for(int i = 8; i 》 0; i--){

blink(i, LR);

delay(40);

lid = false;

}

}else if(lid == false && rasioL 》 0.96 && rasioR 》 0.96) { //normal

//cnt++;

//eyelid = 0;

if(LR 《= 7){

for(int i=LR; i《=7; i++){

blink(0, i);

delay(40);

LR = i;

}

}else {

for(int i=LR; i》=7; i--){

blink(0, i);

delay(40);

LR = i;

}

}

}

//Initial value refresh

if (cnt 》 10){

iniSensorValL = sensorValL;

iniSensorValR = sensorValR;

cnt = 0;

}

}

第5步:操作

用传感器检测瞳孔的左右移动和眨眼,并控制眼球LED。

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