CasioWatches Technology - The Triple Sensor

Technology

Triple Sensor

The triple sensor

The triple sensor is an extremely small three layer sensor, which can be accommodated on the smallest of boards. This technology includes the most important functions of the watch. Key features include a thermometer to measure the outside temperature, a barometer for determining the air pressure and a digital compass to display the cardinal point. 

Digital compass

The magnetic field of the earth is a complex network of north-south radiation. The direction sensor uses this field to accurately determine direction.

The sensor consists of two rectangular coils that detect slight tensions created by the earth's magnetic field. Depending on the position and direction, these tensions vary in intensity. There is a non-magnetic resistance between the two coils, which absorbs the subtle changes in tension.

With each new position, the values that are measured by the resistance change. A microprocessor converts the measurements so that they can be displayed clearly on your watch.

Barometer

• The barometer measures the air pressures and displays tendencies in the weather.
• As a general rule, the higher a person goes (ascent/terrain), the lower the barometric pressure will be.
• An increase in air pressure usually signifies an improvement in the weather.
• A decrease in air pressure usually means that bad weather is on its way.
• The air pressure is displayed with an accuracy of 1 hPa (hectopascals).
• The barometer can measure and display a range from 260 hPa to 1000 hPa.

Thermometer

• The thermometer is used to measure the outside temperature.
• The temperature is displayed with an accuracy of 0.1 C
• The thermometer can measure and display a range from -10 C to 60 C

Altimeter (general information)

• The built-in altimeter uses a pressure sensor to measure the current air pressure.
• The measured air pressure is then used to provide an "estimate" of the current altitude.
• The electronic mechanism in the watch is pre-programmed with "ISA values" ("International Standard Atmosphere") used to convert pressure values into altitude values. In simple terms, this means that a formula inside the mechanism converts all pressure values into a specific altitude.
• The air pressure and temperature generally become lower as the altitude increases. The altitude is measured based on the ISA values, which define the connection between altitude, air pressure and temperature.

Important..!
The electronic mechanism "estimates" the altitude based on the air pressure.
This means that the altitude shown in the display may vary in the same place if the air pressure changes.

Altimeter (special features)

Height gain

Depending on the model, up to 40 data sets can be stored in the altimeter's data memory. Each of these data sets consists of an altitude, as well as the date and time. In addition to the individual altitudes, the following data is also stored in the memory:

• Maximum altitude (MAX): stores the highest point within a measurement (E)650 m
• Minimum altitude (MIN): stores the lowest point within a measurement (F)20 m
• Total ascent (ASC): stores the total altitude of an ascent (A+C)280 m + 400 m = 680 m
• Total descent (DSC): stores the total altitude of a descent (B+D)50 m + 450 m = 500 m
• Total memory: stores the lowest, the highest and the accumulated total ascent and descent from all stored measurements

Types of altitude measurement

Relative altitude:
The relative altitude indicates the difference in altitude between two different locations, e.g. the altitude on the roof of a building measured from the ground floor. 

Absolute altitude:
The absolute altitude measures the actual altitude of a location from sea level, e.g. the height from the roof of a building measured from sea level. 

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