Nowadays, there is a great deal of publicity among bowers, and their common denominator is that they always have a mobile phone in their hands. They stare at the screen with their eyes on the screen. They even affect their daily communication with others. They often hear complaints from grandparents. Family gatherings are fast becoming mobile games.
How mobile phone will have such a magic, so that everyone willing to abandon the daily exchange and never give up? This is probably the inventor of mobile phone Mr. Martin Cooper had unexpected, in fact, today's mobile phone has shrunk, After many iterations evolved, it seems to have become the most important entrance in the information age, a great alternative to PC trend.
In fact, the phone is a small PC, which is the same as a PC. It also has components such as a processor, memory, monitor, etc. It is more compact and portable than a PC, smarter and more able to read your heart. So you can read your heart, which load sensor can be described as great, now you may wish to take a look at these powerful sensors is how to do their job, so that your cell phone is well aware of you.
Narcissistic Savior: Image Sensor
A significant feature of narcissism is the love of Selfie, is the so-called self-timer or rather die. Before the general use of digital cameras, although the effect is good, but not convenient for real-time viewing, so to design a real-time viewfinder flip camera, real-time viewing on the many handy, but holding a bulky digital camera is indeed a drudgery thing.
With the image sensor in the performance of more and more powerful, the size has become more compact, it was built into the phone, the camera effect has not lost the original portable digital camera, so self-lovers spring is coming! Especially Domestic mobile phone brands OPPO and VIVO two plants, in the performance of the mobile phone self-spared no effort in research and development, such as the OPPO N1 flip self-timer camera, is almost naturally born and live; VIVO X7 equipped with front moonlight soft light, the same Selfie On the skill of non-light, and then with the map app, basically narcissistic enthusiasts on all the imagination can meet.
Entertainment companion: gravity sensor and gyroscope
As the performance of the mobile phone is getting stronger and stronger, the screens are getting larger and larger. The 5.7-inch and 6.0-inch screens have become commonplace, which makes the mobile phone a hub of entertainment. Video viewing and games have become the most common Features.
When you watch the movie and place the phone horizontally, the screen will automatically rotate for a better viewing experience. Why is the phone so considerate? It's not mysterious, thanks to the gravity sensor.
Gravity sensor is based on the principle of piezoelectric effect to work, its internal weight and the piezoelectric film together, through the orthogonal two directions of the voltage generated by the size to calculate the horizontal direction.
The gyroscope, on the other hand, uses the principle that the axis of rotation of a rotating object refers to a direction that is not changed when it is not affected by external forces.
Compared with the gravity sensor, the application of the gyroscope is more in the game, for example, in the role playing game, the user can realize the control of the angle of view in the game by moving the cell phone; in the racing game, by rotating the cell phone To achieve the control of the car is also the use of gyro.
Exercise and Health: Magnetic field sensors, GPS and heart rate sensors
Do you know where you are, how you move (for example, if you can not find North) and your own heart rate during your exercise? The knowledge of this information is important to a person seeking exercise and health , In fact, understanding the above information is not difficult, because every piece of information can be obtained by virtue of professional equipment, and now, you only need to bring a cell phone can be included one by one.
The ancients generally need compass to guide the direction of navigation, and now built-in mobile phone magnetic sensor has completely replace the compass, with a mobile phone to go out, no longer have to worry about can not find the North. The realization of the principle is the use of anisotropic magnetoresistive material, in the feeling of weak magnetic field changes, its own resistance will change, it is also for this reason, when we use the compass on the phone, it is often Need to shake the phone, so that changes in the magnetic field quickly, in order to achieve accurate direction.
At present, the built-in GPS module in a mobile phone is almost a well-known function, which is mainly used for positioning, navigation, speed measurement and ranging applications. The built-in chip uses the instantaneous position of the satellite at a high speed as the known starting data. The time difference between the satellite transmitting coordinates and receiving time is used to calculate the distance between the satellite and the mobile phone, and then the spatial cross-talk method is adopted to determine the position coordinate of the measured point and finally realize the positioning function.
Samsung NOTE4 heart rate sensor is located below the rear camera
Heart rate sensor is currently on the phone's application is not much, Samsung NOTE4 is one of the few phones, Samsung installed in the NOTE4 rear camera position below the heart rate sensor, the realization process is the use of high-brightness LED light source (usually Green) light finger, when the heart of fresh blood flow through the capillaries, the brightness (red depth) showed a cyclical changes like waves, the use of the camera to quickly capture the regularly changing intervals, and then through the phone application Conversion, to determine the frequency of contraction of the heart, allowing users to keep aware of their heart rate during exercise, to adjust to the appropriate exercise intensity.
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