The number of sensors on the market has grown in recent years, especially since microelectronics have revolutionized the industry. The ordinary sensors used earlier are now being replaced by sophisticated and intelligent versions, offering improved functionality and added properties.
Most recent sensors have an improved ability to integrate into distributed systems. The latest ones also utilize standard bus and wireless network interfaces, making data transmission easier and fault diagnosis easier. These features allow manufacturers to remotely diagnose the problems with the sensors.
Sensors detect physical parameters by using sensing elements, mechanisms, or reactions to provide the desired output. All sensors have a sensitive element that changes when a parameter changes, which in turn determines how much the measured parameter changes.
If you want to know more about the different types of sensors, continue reading this article.
How Many Types of Sensors Are Available in the Market?
The first step in identifying the best sensor for your application is to know the various types of sensors. There are different types of sensors available in the market. Let’s look at each one in more detail.
The photoelectric sensor market is segmented into several types. These sensors are widely used in a number of sectors, including material handling, packaging, connected spaces, and industrial automation. Moreover, they can control multiple processes, such as temperature and humidity. Despite the wide range of applications, there are a few factors that limit their growth. In the food and beverage sector, photoelectric sensors play a vital role in maintaining food quality and hygiene, to the growing awareness of consumers towards healthy food.
The capacitive sensor market is segmented according to the type and end-user. By end-user, the market is segmented into consumer electronics, automotive, oil & gas, healthcare & life sciences, and manufacturing. These sensors are typically used for detecting a change in a physical quantity and can be cylindrical or wafer-style. They require an external amplifier that controls their sensitivity. They also feature adjustable sensing distances and can be flush or surface mounted.
There are many different types of piezoelectric sensors available in the market. They are used for measuring vibrations in various industrial applications. The changes in frequency or amplitude of vibrations are indicators of wear and tear. They are also used to detect damage to large structures. Piezoelectric sensors are widely used in industrial applications. The piezoelectric sensors market is spread across major continents. These regions are North America, Europe, Asia-Pacific, Latin America, the Middle East, and Africa.
- Active And Passive Sensors
The most fundamental difference between passive and active sensors is the way they detect energy. Passive sensors measure reflected energy while active sensors emit a pulse of energy into the target. Most active sensors use the microwave portion of the electromagnetic spectrum to capture data. Because of this, they can penetrate most atmospheric conditions. Passive sensors are limited to using light and cannot penetrate cloud cover.
- Analog And Digital Sensors
While both analog and digital sensors can be used in various industrial automation applications, their main difference lies in their data formats. Analog sensors have a range of values from zero to one, while digital sensors output discrete steps. Push buttons, for example, are binary, meaning they only give a two-value response. Pulse-width-modulation (PWM) is a common way of receiving analog inputs through a digital medium.
- Sound Sensors
There are several different types of sound sensors. A condenser microphone, for example, emits an analog signal when sound hits the diaphragm. After the wave is detected, an op-amp processes it to generate a digital output. Many other types of sound sensors are available, such as infra-red, ultrasonic, and infrared devices. Acoustic sensors have the ability to measure the intensity of sound and can even be used in medical devices.
- Temperature Sensors
When deciding which temperature sensors to use, you should first consider the environmental conditions that they will be exposed to. While this may sound trivial, some of the most common conditions that sensors must operate in include air, water, and solid materials. The type of sensor that you purchase should be able to operate at all of these temperatures. A thermocouple is the most common type of sensor.