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Electronic
Altimeter ALT-USB to be used in the 18th
World SM Championships 2010
 The ADREL
company is certified by
National Air Sport Control - Polish Aeroclub, allowing ALT-USB
altimeter to measure the altitude of national and international
competitions
In
accordance with the
FAI recommendations, the measurement of altitude in the categories S1
and S5 is
to be measured electronically with the use of altimeters. According to
these
guidelines altimeter has been developed, which in addition to measuring
the
maximum altitude, stores measurement results for the entire flight. Its
parameters were adjusted to the recommendations of the FAI. Altimeter’s
size
and weight (1.2 g)
allow for its inclusion in all types of space models. Altimeter may
also prove
useful when setting F1B model category (eg, choice of propeller).
Model
altimeter ALT-USB
is used for measuring the altitude of the model and for the analysis of
the
flight. Altimeter records 32 measurements before takeoff, the flight
measurements and 32 measurements after landing. Detection of the model
take-off
is carried out automatically (you can adjust the altitude, at
which
take-off is detected). Landing is also
detected automatically. Measurements are stored in non-volatile
memory,
they are remembered after you disconnect the
power supply. Frequency of measurement is set in the range of 50
measurements
per second to 1 measurement every 5 seconds.
The readout of the
ALT-USB
altimeter’s
measurements and parameters is possible
when cable is connected to the USB connector on your computer. There is
a need
for additional adapter (in the pricelist Adapter - Charger). The chart
shows
the entire flight of a rocket. The graph can be zoomed. Measurements of
the
flight can be saved on your computer and then played back. Graph of the
current
operation may be imposed on the chart with a previously recorded
flights. This
allows you to compare flights with different settings. In addition, the
current
temperature is displayed. For the purposes of competitions altimeter is
able to
store the starting numbers of competitors. In addition, each altimeter
has a
recorded permanent unique serial number. For archiving the results of
competitions, the measurements can be saved to disk and retrieved any
time.
Altimeter’s software allows you to automatically send data to excel
sheet. The
number of competitors, altimeter’s serial number, the maximum altitude
are
sent. Thanks to this registration of results is a simplified to the
maximum.
  Adapter -
Charger used to connect the altimeter to a computer using a standard
USB cable
with the tip of a type B. Using the program one can read and archive
the
results of the program (as described above). Adapter has a built-in
complete
control system of battery recharge (single-cell Li-Pol). System charges
the
battery with a current of about 50 mA (using the resistor you can
change the
current up to 400mA). The charger signals the end of charging via a
LED. As a
power source, you can use your computer (USB) or any charger for mobile
phones that
has an USB connector.
Recommended battery: Li-Pol 50mAh,
weight 2 grams
(with
wires), Li-Po 20mAh, weight 1gram
Multi-charger is used for
charging 1 to 20 batteries. Multi-charger can be used during the
championship. At the same time can be charged the twenty batteries.
Each
battery has a separate charging controller. Each battery is charged
current 50mA. Charger is powered voltage 5V/1,2 A. Can be used to
supply
power from an old computer.
Detailed instruction altimeter and
method of assembly is located in the section "download".
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We
also offer ALT-LED
altimeter. Result of the measured altitude is
presented by blinking LED. Altimeter is permanently set at the sampling
frequency: 10 measurements per second. The
measurement starts after reaching the height of 20m. The measurement
ends after reaching the take-off altitude. The measurement results are
averaged.
The maximum output is stored and shown. Reading of measurement is
always after powering-up of the altimeter.
Measurement can deleted by shorting the pins. Each altimeter has a
unique serial number,
which can be read from a blinking LED. 