Parkovací Senzor
Parkovacie senzory slúžia na uľahčenie parkovania najmä na miestach, kde je ledva dostatok miesta na zaparkovanie. V novších modeloch áut už nájdeme zabudované parkovacie senzory, ale ľudia, ktorí nevlastnia také autá môžu mať niekedy problém zaparkovať do malej garáže.
Tento parkovací senzor nielen že vám pomôže zaparkovať, ale vás aj informuje aká je teplota a vlhkosť v garáži, ktoré si možete pozrieť online.
Použité súčiastky
Na to, aby sme vytvorili tento parkovací senzor, potrebujeme následovné:
- Arduino NANO / UNO
- HC-SR04
- SHT 31D
- VS 1838B a IR ovládač
- ESP-8266 s ESP-01 adaptérom
- dátový RGB LED pás
- káble
Schéma
Krabička
Krabičku k obvodu som navrhol v OpenSCAD programe.
Na prednej stene krabičky sú otvory pre ultrazvukový senzor a IR senzor, na ľavej stene sú otvory pre Arduino UNO vstup a na vrchu je výrez pre vedenie kabeláže z krabičky.
Výsledky
Po vytlačení konceptu vyzerá krabička takto:
Po zapojení Arduino dosky do USB siete, sa vykoná inicializácia a vizuálny test zasvietením 15 lediek na červeno, následne zeleno a potom na modro. Po skončení inicializácie je možne IR ovládačom púštať funkcie programu.
- ">||" tlačítko spustí samotný parkovací senzor
- "EQ" tlačítko vypíše na konzolu teplotu a vlhkosť priestoru
- "0" tlačítko znovu spustí test RGB LED pásu
- "1" tlačítko na znovupripojenie Arduina na WiFi a server.
- "2" tlačítko na vypnutie snímania.
Na stránke Parkovací Senzor sa nachádza databázna tabuľka. Táto tabuľka vypisuje ID riadku, kedy bolo zaparkované a aká teplota a vlhkosť bola v ten čas v garáži.
Video finálnej verzie:
Zdrojový kód
Kód webovej stránky a ESP servera tu
#include <Arduino.h>
#include <FastLED.h>
#include <QuickStats.h>
#include <IRremote.h>
#include <Wire.h>
#include "Adafruit_SHT31.h"
#include <SoftwareSerial.h>
SoftwareSerial ss(2, 4);
QuickStats stats;
/*
Database layout:
mysql> describe park_sensor;
+-----------+----------+------+-----+-------------------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-----------+----------+------+-----+-------------------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| date_time | datetime | NO | | CURRENT_TIMESTAMP | |
| temp | float | NO | | NULL | |
| hum | float | NO | | NULL | |
+-----------+----------+------+-----+-------------------+----------------+
4 rows in set (0.00 sec)
*/
#define LED_PIN 7 //D pin LED pas
#define N_LEDS 15 //kolko bude svietit
#define M_LED 3 //D pin motion senzor
//commandline
char cmd[20];
//ir ovladanie
int ir_input_pin = 8; // D8
IRrecv irrecv(ir_input_pin);
decode_results results;
//teplota vlhkost
Adafruit_SHT31 sht31 = Adafruit_SHT31(); //SCL v A5, SDA v A4
//parkovacka
int p_status = 0;
int n_status = 1;
const int trigPin = 10;
const int echoPin = 9;
const int start_distance = 300; //maximum(CM)
const int stop_distance = 80; //minimum(CM)
CRGB leds[N_LEDS];
int distance = 0;
int state = (start_distance - stop_distance) / 15; //vypocet stadia polohy, urcene na moznu zmenu start a stop vzdialenosti
float duration = 0;
float durationarray[15];
/////////////////////////////////////////////////////
void led_check() { //test svietenia lediek
for (int i = 0; i <= 14; i++) {
leds[i] = CRGB (255, 0, 0); // 15 lediek RED
FastLED.show();
}
delay(1000);
for (int i = 0; i <= 14; i++) {
leds[i] = CRGB (0, 255, 0); // 15 lediek GREEN
FastLED.show();
}
delay(1000);
for (int i = 0; i <= 14; i++) {
leds[i] = CRGB (0, 0, 255); // 15 lediek BLUE
FastLED.show();
}
delay(1000);
for (int i = 0; i <= 14; i++) {
leds[i] = CRGB (0, 0, 0); // 15 lediek nesvieti
FastLED.show();
}
}
void parking_sensor() { // hlavny program na ukazku vzdialenosti od parkovacieho systemu
for (int i = 0; i <= 14; i++) {
digitalWrite(trigPin, LOW);
delay(2);
digitalWrite(trigPin, HIGH);
delay(10);
digitalWrite(trigPin, LOW);
durationarray[i] = pulseIn(echoPin, HIGH);
}
duration = (stats.median(durationarray, 15));
//Kalkulacia vzdialenosti
distance = duration * 0.034 / 2;
Serial.println(distance);
if (distance < stop_distance) { // Zastavenie
for (int i = 0; i <= 14; i++) {
leds[i] = CRGB (255, 0, 0); // 15 lediek RED
FastLED.show();
}
}
else if (distance < stop_distance + state) {
for (int i = 1; i <= 14; i++) { //14 lediek nesvieti
leds[i] = CRGB (0, 0, 0);
}
for (int i = 0; i <= 0; i++) { //1 ledka YELLOW
leds[i] = CRGB (255, 255, 0);
}
FastLED.show();
delay(50); // delay je na to aby pri prechode rapidne nepreblikaval
}
else if (distance < stop_distance + state * 2) {
for (int i = 2; i <= 14; i++) { //13 lediek nesvieti
leds[i] = CRGB ( 0, 0, 0);
}
for (int i = 0; i <= 1; i++) { //2 ledky YELLOW
leds[i] = CRGB ( 255, 255, 0);
}
FastLED.show();
delay(50);
}
else if (distance < stop_distance + state * 3) {
for (int i = 3; i <= 14; i++) { //12 lediek nesvieti
leds[i] = CRGB ( 0, 0, 0);
}
for (int i = 0; i <= 2; i++) { //3 ledky YELLOW
leds[i] = CRGB ( 255, 255, 0);
}
FastLED.show();
delay(50);
}
else if (distance < stop_distance + state * 4) {
for (int i = 4; i <= 14; i++) { //11 lediek nesvieti
leds[i] = CRGB ( 0, 0, 0);
}
for (int i = 0; i <= 3; i++) { //4 ledky GREEN
leds[i] = CRGB ( 0, 255, 0);
}
FastLED.show();
delay(50);
}
else if (distance < stop_distance + state * 5) {
for (int i = 5; i <= 14; i++) { //10 lediek nesvieti
leds[i] = CRGB ( 0, 0, 0);
}
for (int i = 0; i <= 4; i++) { //5 lediek GREEN
leds[i] = CRGB ( 0, 255, 0);
}
FastLED.show();
delay(50);
}
else if (distance < stop_distance + state * 6) {
for (int i = 6; i <= 14; i++) {
leds[i] = CRGB ( 0, 0, 0);
}
for (int i = 0; i <= 5; i++) { //6 lediek GREEN
leds[i] = CRGB ( 0, 255, 0);
}
FastLED.show();
delay(50);
}
else if (distance < stop_distance + state * 7) {
for (int i = 7; i <= 14; i++) {
leds[i] = CRGB ( 0, 0, 0);
}
for (int i = 0; i <= 6; i++) { //7 lediek GREEN
leds[i] = CRGB ( 0, 255, 0);
}
FastLED.show();
delay(50);
}
else if (distance < stop_distance + state * 8) {
for (int i = 8; i <= 14; i++) {
leds[i] = CRGB ( 0, 0, 0);
}
for (int i = 0; i <= 7; i++) { //8 lediek GREEN
leds[i] = CRGB ( 0, 255, 0);
}
FastLED.show();
delay(50);
}
else if (distance < stop_distance + state * 9) {
for (int i = 9; i <= 14; i++) {
leds[i] = CRGB ( 0, 0, 0);
}
for (int i = 0; i <= 8; i++) { //9 lediek GREEN
leds[i] = CRGB ( 0, 255, 0);
}
FastLED.show();
delay(50);
}
else if (distance < stop_distance + state * 10) {
for (int i = 10; i <= 14; i++) {
leds[i] = CRGB ( 0, 0, 0);
}
for (int i = 0; i <= 9; i++) { //10 lediek GREEN
leds[i] = CRGB ( 0, 255, 0);
}
FastLED.show();
delay(50);
}
else if (distance < stop_distance + state * 11) {
for (int i = 11; i <= 14; i++) {
leds[i] = CRGB ( 0, 0, 0);
}
for (int i = 0; i <= 10; i++) { //11 lediek GREEN
leds[i] = CRGB ( 0, 255, 0);
}
FastLED.show();
delay(50);
}
else if (distance < stop_distance + state * 12) {
for (int i = 12; i <= 14; i++) {
leds[i] = CRGB ( 0, 0, 0);
}
for (int i = 0; i <= 11; i++) { //12 lediek GREEN
leds[i] = CRGB ( 0, 255, 0);
}
FastLED.show();
delay(50);
}
else if (distance < stop_distance + state * 13) {
for (int i = 13; i <= 14; i++) {
leds[i] = CRGB ( 0, 0, 0);
}
for (int i = 0; i <= 12; i++) { //13 lediek GREEN
leds[i] = CRGB ( 0, 255, 0);
}
FastLED.show();
delay(50);
}
else if (distance < stop_distance + state * 14) {
for (int i = 14; i <= 14; i++) {
leds[i] = CRGB ( 0, 0, 0);
}
for (int i = 0; i <= 13; i++) { //14 lediek GREEN
leds[i] = CRGB ( 0, 255, 0);
}
FastLED.show();
delay(50);
}
else if (distance >= stop_distance + state * 14) {
for (int i = 0; i <= 14; i++) { //vsetky ledky GREEN
leds[i] = CRGB ( 0, 255, 0);
}
FastLED.show();
delay(50);
}
}
int temp_hum() { //meranie teploty a vlhkosti
int temp = sht31.readTemperature();
int hum = sht31.readHumidity();
if (! isnan(temp)) {
Serial.print("Teplota: ");
Serial.print(temp);
Serial.println("°C");
} else {
Serial.println("ERROR: Nepodarilo sa zistit teplotu");
}
if (! isnan(hum)) {
Serial.print("Vlhkost vzduchu: ");
Serial.print(hum);
Serial.println("%");
} else {
Serial.println("ERROR: Nepodarilo sa zistit vlhkost vzduchu");
}
add_record(temp, hum);
return;
}
void send_packet(char *packet) //posielanie packetu na server
{
int len = strlen(packet);
ss.print("AT+CIPSEND=");
ss.print(len);
ss.write(13);
ss.write(10);
while (1) {
if (ss.available()) {
if (ss.read() == '>') break;
}
}
ss.print(packet);
}
void connect_to_wifi() //pripojenie na wifi
{
ss.print("AT+CWJAP_DEF=\"SSID\",\"heslo\""); // Nahradit SSID a heslo WiFi na ktore sa bude pripajat
ss.write(13);
ss.write(10);
}
void connect_to_server() //pripojenie na server
{
ss.print("AT+CIPSTART=\"protokol\",\"IP\",port"); // Nahradit protokol, IP adresu a port servera na ktory sa bude pripajat
ss.write(13);
ss.write(10);
}
char *print_int_to_str(char *str, long a) //zmena typu dat int na str
{
long q = 1;
while (q <= a) q *= 10;
while (q > 1)
{
q /= 10;
*str = '0' + a / q;
a %= q;
str++;
}
return str;
}
void add_record(int temperature, int humidity) // vyrobenie packetu na odoslanie
{
char packet[30];
packet[0] = 'd';
packet[1] = ' ';
char *next_pos = print_int_to_str(packet + 2, temperature);
*next_pos = ' ';
next_pos++;
next_pos = print_int_to_str(next_pos, humidity);
*next_pos = 0;
send_packet(packet);
Serial.print("Added record using packet: ");
Serial.println(packet);
}
void process_special_command() //spracovanie prikazov
{
if (cmd[0] == 'w') connect_to_wifi();
else if (cmd[0] == 'c') connect_to_server();
else if (cmd[0] == 's') send_packet(cmd + 2); //"s packet_data[EOL]"
else Serial.println("# ???");
}
void special_command() //tvar prikazu
{
int cmd_index = 0;
char c = '#';
while (1) {
if (Serial.available())
{
c = Serial.read();
if (c != 10) cmd[cmd_index++] = c;
else break;
}
}
cmd[cmd_index] = 0;
Serial.print("cmd: '");
Serial.print(cmd);
Serial.println("'");
process_special_command();
}
void setup() { //inicializacia celeho programu
Serial.begin(38400);
ss.begin(38400);
Serial.begin(38400);
Serial.println("Garaz DB Console:");
//setup parkovacka
pinMode(M_LED, INPUT);
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, N_LEDS);
//setup ovladac
irrecv.enableIRIn();
//setup teplota/vlhkost
while (!Serial)
delay(100);
if (! sht31.begin(0x44)) {
Serial.println("ERROR: Nenasiel sa SHT31 chip");
}
led_check();
}
void loop() { //vykonavanie programu
if (n_status == 1){
connect_to_wifi();
delay(10000);
connect_to_server();
delay(2000);
Serial.println("Attempt Done");
n_status = 0;
}
if (p_status == 1) {
parking_sensor();
}
if (irrecv.decode(&results)) { //dekoduje hodnotu na hex
//Serial.println(results.value);
switch (results.value) {
case 0xFF906F: //"EQ"
//Serial.println("Done");
temp_hum();
}
if (p_status == 0) {
switch (results.value) {
case 0xFFC23D: //">||"
//Serial.println("Done");
temp_hum();
p_status = 1;
}
}
if (p_status == 1) {
switch (results.value) {
case 0xFF18E7: //"2"
//Serial.println("Done");
p_status = 0;
for (int i = 0; i <= 14; i++) {
leds[i] = CRGB ( 0, 0, 0);
}
FastLED.show();
p_status = 0;
}
}
switch (results.value) {
case 0xFF6897: //"0"
//Serial.println("Done");
led_check();
}
if (n_status == 0) {
switch (results.value) {
case 0xFF30CF: //"1"
//Serial.println("Done");
connect_to_wifi();
delay(10000);
connect_to_server();
delay(500);
}
}
irrecv.resume();
}
if (Serial.available())
{
char c = Serial.read();
if (c == '#') special_command();
else
{
ss.write(c);
Serial.write(c);
}
}
if (ss.available())
{
char c = ss.read();
Serial.write(c);
}
}