108个传感器之-红外接收模块（9）

介绍

该模块可以接收红外信号，并将其转换为输出端发出的数字信号。当检测到红外信号时，模块上的集成LED会短暂闪烁，提供信号接收的视觉确认。它非常适合使用红外遥控器或其他红外信号的项目。由于其简单的操作和可靠的信号处理，该模块可以很容易地集成到各种电子项目中，例如实现远程控制或无线传输数据。

Technical Data
Operating voltage	3,3 V - 5 V
Operating current	0,4 - 1,5 mA
Reception range	18 m

引脚连接

在PCB上，可以直接焊接所需的电阻器。焊接电阻器的位置位于PCB上连接引脚的正上方。

pin 引脚连接开发板的 gpio 接口即可：

DEV BOARD	Sensor
Pin 10	Signal
5 V	+V
GND	GND

代码示例

在两个传感器模块的帮助下，KY-005和KY-022可以构建具有红外遥控器和红外接收器的系统。为此，除两个模块外，还需要两个Arduinos。然后，这些充当信号的发射机和接收器。

借助传感器模块KY-022，可以构建红外接收器。为此，只需要红外接收器模块和一个单一的arduino。Arduino充当接收器，并将信号输出到串行控制台。

#include <Arduino.h>
#include "PinDefinitionsAndMore.h"
#include <IRremote.hpp> 
/*
 * Specify which protocol(s) should be used for decoding.
 * If no protocol is defined, all protocols (except Bang&Olufsen) are active.
 * This must be done before the #include <IRremote.hpp>.
 */
//#define DECODE_DENON        // Includes Sharp
//#define DECODE_JVC
//#define DECODE_KASEIKYO
//#define DECODE_PANASONIC    // Alias for DECODE_KASEIKYO
//#define DECODE_LG
#define DECODE_NEC          // Includes Apple and Onkyo. To enable all protocols, simply comment/uncomment this line.
//#define DECODE_SAMSUNG
//#define DECODE_SONY
//#define DECODE_RC5
//#define DECODE_RC6
//#define DECODE_BOSEWAVE
//#define DECODE_LEGO_PF
//#define DECODE_MAGIQUEST
//#define DECODE_WHYNTER
//#define DECODE_FAST
//#define DECODE_DISTANCE_WIDTH // Universal decoder for pulse distance protocols
//#define DECODE_HASH         // special decoder for all protocols
//#define DECODE_BEO          // This protocol must always be activated manually, i.e. it is NOT activated if no protocol is defined. It prevents the decoding of SONY!

//#define DEBUG               // Enable this to get lots of nice debug output from the decoders.
//#define RAW_BUFFER_LENGTH  750 // 750 is required for remote controls for air conditioning systems. Standard is 200.

void setup() {
    Serial.begin(115200);
    while (!Serial)
    IrReceiver.begin(IR_RECEIVE_PIN, ENABLE_LED_FEEDBACK);
    Serial.println(F("KY-022: Infrared receiver test"));
    Serial.print(F("Ready to receive IR signals from protocols: "));
    printActiveIRProtocols(&Serial);
    Serial.println(F("at the pin " STR(IR_RECEIVE_PIN)));
}

void loop() {
    if (IrReceiver.decode()) {
        if (IrReceiver.decodedIRData.protocol == UNKNOWN) {
            Serial.println(F("Received noise or an unknown (or not yet activated) protocol"));
            IrReceiver.printIRResultRawFormatted(&Serial, true);
            IrReceiver.resume(); 
        } 
        else {
            IrReceiver.resume();
            IrReceiver.printIRResultShort(&Serial);
        }
    }
}

小结

待完善…