● most what is the principle of initial mechanical pedometer?

 

Liao Yong of engineer of academy of Chinese electron science expresses, “ most initial pedometer is mechanical, principle actually very simple, follow like placing weight. Because when walking, be a person is,meet wear that belt that place weight move. It is moved, basically be a person in make a move. Place hammer to be moved next, contact electrify with the metal, marked one step. ”

 

What is the working principle of annulus of ● intelligence hand and plan pace software?

 

Original, pedometer is the contact that support places hammer and metal, ability records our pace to count, is but is popular now intelligent hand annulus mixed,the plan pace software in the mobile phone also this principle?

 

Liao Yong explains: “ inside annulus of present mobile phone hand, it is to use a very small chip commonly, call 3 axes acceleration sensor. Carry this acceleration sensor, can measure a mobile phone or hand annulus differs in 3 the acceleration on direction. Have consideration through the value to this acceleration next, can measure a pace that walk to count probably. ”

 

 

● so, the pace number that how knows we walk is sensor of this kind of acceleration?

 

“ has a kind of special stuff, call the pottery and porcelain that suppress report material, according to action above the deformation with the size different generation of force, can produce distinct voltage change, through action above force measures an acceleration, can judge a person through acceleration next when walking, he is campaign has in wh which direction, perhaps say how much frequency is probably. ” Liao Yong expresses.

 

The rock that how ● differentiates to the hand shakes or arise on foot?

 

But, if use a hand to shake a mobile phone, also can produce acceleration, of the distinction that how resolution hand shakes and how resolution hand shakes and walks is this sensor?

 

Liao Yong expresses, when the person walks, frequency is to be in certainly in certain limits. Say for example, one second steps a how many pace, perhaps say one minute to be able to be walked out of only much further. If the person is taking the word that the mobile phone is shaking, frequency will be very fast. Next, (rock) the acceleration change that acceleration change is walking than the person should be gotten greatly much. Basically traverse these two fields, can judge coming out after all is the person is taking a mobile phone shaking, a right still person is going.

 

What does application of ● acceleration sensor have?

 

Actually, plan pace function is the one partial application of acceleration sensor only. The respect waits in health of car safety, bridge, acceleration sensor is having very main effect.

 

Liao Yong says: Why can the safe gasbag on “ car bounce come? The car opens fixed rate above, stop suddenly next, safe gasbag can be played come out, this is to have the acceleration that an acceleration sensor is measuring a car to take way afore actually. Adopt the change of a quantity, will judge answer to should not play safe gasbag now come out. ”

 

In addition, the health that acceleration sensor still can apply in bridge is monitored in. Sensor technology and computer technology, communication technology calls the 3 big pillar of contemporary IT. On spaceflight carrier rocket, adoption sensor is amounted to 2000 many; The sensor that place of plane of a civil aviaton uses also has on 1000. Can say, any automation unit and system cannot leave sensor technology.