Which is better, ultrasonic sensor or infrared sensor?

With the development of science and technology such as Electronic computers, production automation, modern information, military, transportation, chemistry, environmental protection, energy, marine development, remote sensing, aerospace, etc., the demand for sensors is increasing day by day, and their application fields have penetrated into the national economy. Various departments and people’s daily cultural life. Choosing a sensor in these applications is challenging for any project. The performance of the system largely depends on the reliability of the sensors and other components of the application. Let’s take a look at which is better, ultrasonic sensor or infrared sensor?

With the development of science and technology such as electronic computers, production automation, modern information, military, transportation, chemistry, environmental protection, energy, marine development, remote sensing, aerospace, etc., the demand for sensors is increasing day by day, and their application fields have penetrated into the national economy. Various departments and people’s daily cultural life. Choosing a sensor in these applications is challenging for any project. The performance of the system largely depends on the reliability of the sensors and other components of the application. Let’s take a look at which is better, ultrasonic sensor or infrared sensor?

Which is better, ultrasonic sensor or infrared sensor?

In order to determine the sensor suitable for the project application, sensor selection needs to consider some factors.

1. Accuracy-how close the reading is to the true distance.

2. Resolution-the smallest reading or change in reading that can be reported.

3. Accuracy-the smallest reading that can be read repeatedly and reliably.

How do ultrasonic sensors and infrared sensors work?

1. The working principle of ultrasonic sensors

The working principle of an ultrasonic sensor is to reflect sound waves to measure distance. A sensor can detect other people nearby. Ultrasonic sensors emit sound waves. If there are objects in front of them, they will be reflected back. The sensor detects these waves and measures the time between sending and receiving these sound waves. Then estimate the distance based on the time interval between the sensor and the object.

Which is better, ultrasonic sensor or infrared sensor?

Ultrasonic sensors are largely insensitive to obstacles, such as light, dust, smoke, mist, steam, and lint.

Ultrasound is not as good as infrared when defining the edge of the area. Ultrasonic sensors are used for liquid level measurement, object detection, distance measurement, anti-collision detection and tray detection, etc. Ultrasonic sensors are used to improve operational efficiency and provide additional safety in manufacturing facilities. This is one of the main factors driving the global demand for ultrasonic sensors.

2. The working principle of infrared sensor

The working principle of an infrared sensor is to reflect light waves. Infrared light is reflected from an object or emitted from an infrared remote control or beacon. Infrared sensors are also used to measure distance or proximity. Detect the reflected light, and then calculate the estimated distance between the sensor and the object.

Which is better, ultrasonic sensor or infrared sensor?

Infrared sensors cannot work in the dark while ultrasonic sensors can work in dark environments. Infrared rays are easier to detect brighter surfaces than dark surfaces because the sensor will not detect darker surfaces. Infrared sensor values ​​usually fluctuate under changing lighting conditions. When objects pass within this range, light waves detect these objects and reflect their presence back to the sensor. Their wavelength is smaller than that of microwaves. Although they can detect movement, they can also measure the heat dissipation of an object.

In summary, the editor believes that the choice of sensor depends entirely on your application. Infrared sensors have many limitations, such as being unable to use them in the sun due to interference. It can make outdoor applications or dark indoor applications very difficult. Ultrasonic sensors use sound waves to work and detect obstacles without being affected by many factors. If reliability is an important factor in your choice of sensor, ultrasonic sensors are more reliable than infrared sensors. If you are willing to reduce cost reliability, infrared sensors are the ideal choice for your application.

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