Pedometer

Pedometer


Pedometer through statistical step number, distance, speed, time and other data, calculating calories or heat consumption, to control the amount of exercise, to prevent the lack of exercise, or exercise a tool of excess.






1Introduction

Electronic pedometer is mainly composed of a vibration sensor and an electronic counter. People focus on the walk to have a little to move up and down. The waist of the displacement is most obvious, so the pedometer on his belt is the most suitable.
The work is the core of electronic pedometerA shock sensor, According to the general sensor can be divided into the form of 2D and 3D pedometer pedometer. According to the function can be divided into single function pedometer, pedometer, fat measurement pedometer etc.

2Operation

Set up

In general the pedometer is nothing more than clear (RESET), model (MODE), set (SET) three buttons, each manufacturer are not the same name but not deviate from the. For some manufacturers joined backlit keys, and MP3 keys and other additional functions; but nothing more than these three basic keys.
Usually the mode button (MODE) is used to switch the view data, setting key (SET) is defined as the adjustment settings data. Pedometer when the data set, which can adjust the data will flash, then adjust the way data according to the manufacturer's key set of different names, the set of operations are not the same. Such as the international brand isport pedometer is according to the clear key (RESET) to adjust the data; if the data doesn't flash long press the clear button (RESET) is zero data.

Technological process

  1. First, remove battery insulator boot. (the pedometer behind the battery insulation removal activated pedometer)
  2. Secondly, set up personal information including weight and step distance. (hint: step is a step, the distance before the toe to toe after)
  3. Furthermore, the circular back 2D pedometer buckle to vertical ground wear; square 3D pedometer no requirement for wear mode. (the specific wear can be back reference box.)
  4. Finally, the official use of the former clear data. (the user in the formal use of pedometer ago of the plan steps clear, step on the interface to reduce step counting error)

The term paper

Pedometer screen is relatively small, so a lot of the use of English abbreviations of terms, let the initial use of the people is not easy to understand. We take FITBOX as an example to explain in detail the commonly used terminology.:
Abbreviations
The original word
Chinese interpretation
STEP
STEP Step number
SPD
SPEED
Speed
DIST
DISTANCE
Distance
STRI
STRIDE
Step
TIME
TIME Exercise duration
KCAL
K CALORIE
Kaluri, calories, kcal
STW
STOP WATCH
Stopwatch
LAP
LAP Sectional circle
ALM
ALARM
Alarm clock
TMR
TIMER
Timer
MEM
MEMORY
Memory storage
LBIN
LBIN Imperial
KGCM
KGCM Metric
HGT
HEIGHT
Height
WGT
WEIGHT
Weight
M
MALE
Male sex
F
FEMALE
Female sex

3Introduction classification

Type 2D

2D vibration sensor of the older generation is actually a balance hammer on the vibration when the balance is destroyed to make a contact can occur on / off action, by electronic counter to record and display completes the main function, the other heat consumption, the journey is complete conversion circuit, also called mechanical pedometer. Electronic pedometer that 2D generally need to feel the body perpendicular to the ground. The earthquake data recorded at the time of use, the error of the data record is too large, the price cheap .

Type 3D

The current mainstream market is the use of 3D type electronic pedometer. 3D means to experience a full range of human motion, which needn't be perpendicular to the ground to wear, as long as in the side pocket, bag can step. The use of more advanced electronic sensor, step counting more accurate, smaller. Some advanced 3D pedometer with: stopwatch, radio, MP3, flashlight, UV (UV test) and other functions.

Watch type

Watch pedometer is the 3D chip integrated in the watch pedometer. So the user can wear a pedometer to calculate the number of steps, running speed, running distance, calories, and can have a wrist watch calendar, alarm clock, stopwatch, timer and so on, the new watch pedometer is a collection of GPS SOS positioning, emergency call, fall prevention, medication reminders, measurement of heart rate, blood pressure, oxygen saturation and other functions, realizes movement, health, safety and one-stop management, some blind button settings, more humane.

Mobile phone type

Mobile phone type is the use of mobile phone application within or Micro message tools in a step. Users do not have to buy any pedometer device, mobile phone can be directly used pedometer function. Runners can through the mobile phone set height, weight, age and their data, directly open the pedometer via the menu function, can count hops.

Other

As the name suggests, is the integration of the fat pedometer measuring instrument function. Fat measuring instrument is a resistor two angle through the finger on the pedometer, 4 seconds to read the body fat rate. And the calculation of the degree of obesity of the human body. The age, sex, weight and other data and pedometer public. Is suitable for some of the use of pedometer to lose weight groups.
Pedometer with FM FM radio function. People can walk and run step, while enjoying the music and radio.
Step counting wristbands are also called wristband pedometer, containing 3D motion sensor, is not in itself with the display, and mobile phone use, the latest step wristband with Bluetooth transmission and waterproof function, can be used for diving, the use is more convenient.

Contrast

Compared with common pedometer 2D pedometer
3D pedometer
Pedometer Watch
Movement
Spring pendulum mechanical sensor
3D acceleration electronic sensor + time IC;
Electronic watch movement, + 3D electron acceleration sensor
Time accuracy
No
Seconds
1/100 seconds
Display
Single line
Double row
The three line
Waterproof and dustproof shockproof
No
No
5 meters, 10 meters, 50 meters, 30 meters, waterproof grade
Data storage
No
Yes
Yes
Kaluri, the step number, distance
Yes
Yes
Yes
Speed
No
No
Yes
Luminous
No
Part a
Yes
Wear
Must be vertical, equipped with belt clip
Arbitrary, equipped with rope, or use the clap with fixed on the wrist
Strap, stainless steel clasp (step counting rate meter with wear method)
Back shell
Plastic, fastener.
Plastic, fastener.
Stainless steel shell with fastening screws.
Time
No
Yes
Yes
Stopwatch
No
No
Yes
Alarm clock
No
No
Yes
Week calendar
No
No
Yes
Pedometer display contrast
Single line
Double track
The three line
The number of rows displayed information
The 1 line
The 2 line
The 3 line
Display content
The number of steps, calories, distance
The function of data storage for more than 6 days, the time display
Calendar, week, time, stopwatch, alarm clock, and so commonly used sports watch function
Backlight
No
Part a
Some do not have

4Conditions of use

Most of the pedometer can work normally under the following conditions
Temperature: -10 ℃ ~40 ℃, relative humidity: 30%~85%
Atmospheric pressure: 86KPA~106KPA

5Matters needing attention

judge

  1. A mechanical vibration sensor pedometer step counting is accurate, need to maintain a pedometer fuselage with vertical to the horizontal plane, and gently force the pedometer to swing up and down, swing distance of about 3~5 cm is the most suitable. The pedometer to 100% correct only for.
  2. To judge a 3D vibration sensing (gravity acceleration sensor) pedometer step counting is accurate, pinch the body, make the body most flat plane and parallel to the horizontal plane, and gently force the pedometer to swing up and down, observe and count.

Intelligent error correction technology

Because the human body all the time in the dynamic state, every once in a while slightly larger movements or on vehicles vibration will trigger the motion sensor pedometer. The pedometer in order to minimize the invalid record move these human, the cache technology. It is starting from rest human dynamic count record are placed in the temporary buffer pedometer, if continuous dynamic number exceeds the set value, began recording the number of steps. But in several seconds after the pedometer will cache the step number.
General 2D pedometer due to register limitations usually adopts 5 step buffer, 3D pedometer generally use 10 step buffer, pedometer watch also generally use 10 step buffer technology and joined the manual pause step mode in order to achieve the best effect of error correction.

Error

  1. Walking: walking at a frequency of 100 /MIN, walk 100 steps, a few steps pedometer record should be in the range 92~108 step.
  2. Running: running frequency is 170 /MIN, running 100 steps, step number of records should be in the range 95~105 step.
  3. Pedometer without any packaging, from the cement ground 80CM high free fall 2 times, 2 times after the pedometer can still work normally.

6The related history

The pedometer is most early gestation by Leonard Vinci of Italy, but the earliest pedometer is 150 years after Da Vinci, the 1667 production of.
Pedometer Japan's first was produced by the Gcn.naiHiraga in 1755. In Medieval and modern times, pedometer is not widely used, because people are not clear and its use. The invention of machine (hardware) not find it to human uses (software) important.
In Japan, pedometer has been used for 40 years, mainly used for sports and analysis record walking pace. In 1965, pedometer officially entered the Japan commercial market, and is named manpo-meter (Japanese meaning of manpo is the 10000 step). This is usually a pedometer use principle as the pace of technology, using a mechanical switch detection step increase, and with a simple counter. When you shake the device, you can hear a metal ball sliding back and forth, or a pendulum swinging ring when the block. [1]

The mechanical pedometer has already faded out the historical, replace sb. is electronic pedometer.



Reference material

Posted by Lawrence at January 05, 2014 - 11:15 AM