What Is The Function Of Proximity Sensors Used For Mobile Phones
There has been a tremendous growth of sensor technology in most of the recently launched Smartphones. Ambient light sensors, proximity sensors and GPS are some of the most common technologies used in Smartphones these days. A proximity sensor emits a beam of electromagnetic radiation which seeks changes in the return signal or the entire field. There are different types of sensing devices used for different purposes. It is used in mobile phones, cars, doors and so forth.
Today there are different models of sensing gadgets made available at different price rates. Known to possess an extended functional life and high reliability, these devices are gaining immense popularity in most of the online and offline stores. These devices are inclusive of high standards and innovative designs which further increases its usage in various fields.
These devices are used in most of the high end Smartphones as it detects the proximity of the mobile screen to the body of the user. These gadgets allow the mobile phone to sense the presence of an object when it is brought near to the ears. During at instant, the screen turns black to save battery power. The mobile screen stops identifying touches so as to avoid unwanted inputs from the user. The screen is turned off to avoid accidental touches and inputs from the user while using the phone to make a call. In most of the iPhone, the sensors shut down the touch sensitive circuitry and the screen when the phone is brought close to the face. So when the phone is brought near to the face or cheek, all the other activities such as browsing, playing games or music is halted temporarily so that the user can receive the call. The phone resumes its previous activity when it is removed from the ear.
There are different types of sensing gadgets and some of the most important among them include the photoelectric, capacitive, inductive and ultrasonic sensing devices. There are many advantages of using non-contact sensors as compared to the other types of devices.
It can function in any type of harsh climatic conditions and it is easy to detect any target materials. There are different types of devices to detect different types of objects. As this device hardly requires any physical contact to detect the objects, it remains hassle free as there is no wear and tear. It therefore requires less maintenance compared to the other devices. It also includes fast switching characteristics and therefore it can be used in most of the modern devices such as cars and mobiles.
As it does not include any mechanical contact, it includes an unlimited number of switching cycles which is another added advantage. All these gadgets function on the basis of different technologies such as the infrared technology which seeks changes in the return signal when it is close to the object. Different types of proximity sensors are used at homes and commercial buildings to ensure safe premises. Some of these sensors are connected to alarm systems for security purposes too.