Ir Sensor Using Lm358

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Advantages and Disadvantages of Infrared sensor

  • Applications of LM358 IC LM358 IC based Dark Sensor Circuit. This dark sensor IC LM358 circuit is used to test a light dependent resistor, a photo diode and a photo transistor. But, you need to change a photo diode and the photo transistor in place of LDR. The dark sensor circuit using LDR and LM358 IC is shown below.
  • This blog has designed a simple and usable infrared sensor circuit. The design of it not only based on the LM358 chips and technology but also using the knowledge of digital and analog circuits. It can also increase the radiation distance by adjusting the resistance of the potentiometer so that the circuit can be used as an alarm.
  • IR Proximity Sensor.: In this project I'm going to explain how to make a simple IR proximity sensor using IR LEDs, LM358 Dual Op-Amp and some basic electronic components you can find at any local electronics shop.

This page covers advantages and disadvantages of Infrared sensor.It mentions Infrared sensor advantages and Infrared sensor disadvantages.


Definition: The Infrared sensor is a device which uses infrared waves to sensecharacteristics of surroundings. It is used to measure heat emitted by object or human beings.It is also used to detect motion of the object. It is also used for data communication for monitoringand control applications.

Following are the characteristics of Infrared waves:
• Frequency Range: 300 GHz and 400 THz
• Wavelength Range: 1 mm to 750 nm
• Sensing range or distance: 10 to 30 meters.
• Data rate: 300 to 115200 bps (Serial Infrared), 4 Mbps (Fast Infrared)
• Number of devices: 2 in connection mode
• Modulation type: Pulse Position Modulation

In this tutorial, we will show you how to design a circuit that can sense the heartbeat by using an LM358 IC along with an infrared transmitter and receiver. The IR transmitter in this circuit is an IR LED and the detector will be a photodiode.

The Infrared communication network works in two modes viz. point to point and diffuse.
Refer Infrared sensor working>> andActive vs Passive Motion Sensor>> for more information.

Advantages of Infrared sensor

Following are the advantages of Infrared sensor:
➨It provides secured communication due to line of sight or point-to-point mode of communication.
➨The battery used in infrared devices last for long duration due to lower power consumption.
➨Infrared motion sensors detect motion in daytime and nighttime reliably.
➨The sensor does not require any contact with the product to be sensed. The infrared devices are more appropriate for targets which are close than 10 mm.
➨Infrared devices can measure distance to soft objects which may not be easily detected by ultrasound.
➨They are physically smaller in size and are more affordable.
➨It has response time faster than thermocouple.
➨It provides good stability over time.
➨No corrosion or oxidation can affect the accuracy of infrared sensor.
➨It delivers high repeatability.

Disadvantages of Infrared sensor

Following are the disadvantages of Infrared sensor:
➨Infrared frequencies are affected by hard objects (e.g. walls, doors) , smoke, dust, fog, sunlight etc. Hence it does not work through walls or doors.
➨Infrared waves at high power can damage eyes.
➨In monitor & control application, it can control only one device at one time. Moreover it is difficult to control things which are not in LOS (Line of Sight). It requires line of sight between transmitter and receiver to communicate.
➨It supports shorter range and hence it performance degrades with longer distances.
➨It supports lower data rate transmission compare to wired transmission.
➨Also refer advantages and disadvantages of Handheld Infrared based Thermometer >>.


IrDA Tutorial
What is Infrared
Infrared based Pyroelectric Detector
Infrared Spectrum
IrDA vs WLAN vs Bluetooth

Advantages and Disadvantages of other Sensor Types

Different types of Sensors Related links

Article on Sensors and Transducers>>
Proximity Sensor
Occupancy Sensor vs Motion Sensor
LVDT and RVDT sensor
Position, displacement and level sensor
force sensor and strain sensor
temperature sensor
pressure sensor
Humidity sensor
MEMS sensor
Touch sensor
Haptic sensor
Wireless sensor


RF and Wireless Terminologies

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Ir sensor using lm358

Ir Sensor Module Using Lm358

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How to make Infrared (IR) sensor Object Detection Module Circuit Using IR LED and Photodiode

Ir Sensor With Lm358 Circuit Diagram

The IR Object Detection sensor module is quiet easy to make. This sensor circuit below is a low cost - low range infrared object detection module that you can easily build at home using IR LED's. The Maximum input Voltage is 5 Volts.

Ir sensor using lm358

Ir Sensor Using Lm358

We will use a photodiode and IR LED to make a simple circuit. IR led looks like a regular LED that you usually see in Television Remote controls.

For now I have added a regular LED to glow as in indicator when something is detected, you can replace it with a buzzer or something else the way you wish.

The Main concept is simple, the IR led keeps transmitting IR infrared rays up to some range (there is a potentiometer also in the design with the help of which you can alter the range). When some object comes in the (IR) infrared range, the IR waves hits the object and comes back at some angle, The Photo diode next to IR led detects that IR infrared rays which got reflected from the object and hence works as a proximity sensor. You can read more details about Proximity sensors for more.

The components required to make this IR sensor can be easily found in any electronic stores and it is quiet inexpensive.

    IR Sensor Circuit Module Requirements

  • IR LED ( TSFF5210 )TSFF5210
  • PR Photodiode BPV10NF
  • PR Photodiode BPV10NF
  • 1k resistance
  • 220E resistance
  • 6k8 resistance
  • 10k potentiometer 1 - IC LM358
  • IC LM358 ( Dual Op Amp )
Working of ir proximity sensor using lm358

Infrared sensor Module Schematics

Following this schematic you can easily make it on a breadboard, I intentionally drew this schematic for this IR sensor this way so that it can easily printed on the copper board in no time if you have some etching solution.

For now in this circuit an LED would glow as an example. Notice that there are three pins in the schematic in which two pins are used to provide power to the infrared sensor and the Middle pin is unused, and can be used for other operation. The Middle pin goes high (Logic 1) if the photodiode in this object detection module detects an object, and hence can be interfaced with other devices. You can use it the way you wish, it can be used to run some DC motors and make a simple robot. The middle pin of the IR Sensor Circuit can be interfaced with Microcontroller easily to do complex operations, or you can interface an LCD with microcontroller and have the status of the sensor displayed on the LCD very easily as in my next tutorial for interfacing multiple IR Sensors with Arduino and LCD.

Use the way you want it.

Thanks for reading

Coming up next : Infrared (IR) Sensor Object Detection Robot with pic18f4550 and L293D Driver.

NEXT >> IR sensor Interface with PIC18F4550
NEXT >> Multiple IR sensor with Arduino and LCD

Rakesh Mondal