Appendix 3. Electrical Subsystem 3.1 Analog to Digital Converter Datasheet p1 3.2 LS 14250 Batteries Datasheet p1 3.3 High Precision Accelerometers Datasheet p1 3.4 Accelerometer Pack ASC 5721 Datasheet p1 3.5 Compass Datasheet p1 3.6 Voltage regulators Datasheet p1 3.7 Linear 3 axis Accelerometer Datasheet p1 3.8 Voltage regulators Datasheet p1 3.9 LPC2364 Microcontroller Datasheet p1 3.10 Molex Memory Card pcb mount 3.11 PCB Board Top and Bottom Signal Layers 3.12 PCB Board Power Layer and Ground Plane 3.13 FISH Schematic part 1 3.14 FISH Schematic part 2 3.15 FISH Schematic part 3 3.16 PCB Front 3D Simulation 3.17 PCB Back 3D Simulation 3.18 PCB Side 3D Simulation 3.19 Part list w/ prices 3.20 Requirements Verification Table 3.21 Test Chart Flow 3.22 Calibration System Picture 3.23 Test Descriptions 3.24 Components Derating 3.25 Datasheets Main Payload
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Purpose To test the delay of communication subsystems within certain
temperature range and data rate for the synchronization purposes.
Justification There should be something about the correlation between xyz and xyz of the fish –flight simulator
Location IRF Electronic Lab Conditions Normal humidity, Normal pressure(this refers to normal
pressure and humidity), Temperature 25,0 and -10 deg C Required Resources
2 x XBee development boards
2xMircocontroler NXC LPC2368
Unsecured Resources
Date
Duration 10 hours Dependencies
Participants Mikulas Jandak, and / or David Leal, technicians Procedure a) Both Zigbee modules set the communication rate to the
fix value
b) First Zigbee after receiving 1 Byte from second one,
sends 1 Byte to second one. Both keep track of the time
when received the packet
c) Procedure above will be repeated for different data
rates and different temperature (room temperature, two
different outside temperature)
d) Analysis based on the correlation between data rate and
ambient temperature
Expected Results
The delay should be mainly function of the delay caused by the
reaction of the communication subsystem (UART, interrupts) and
independent of the data rate. There may be negligible correlation
between temperature and delay. The delay should be constant for all
packets.
ID T05
Name EMC Test
Components Tested
Entire electrical subsystems with motors
Purpose evaluate the EMI caused by motors, magnets and rapidly changing
electrical field
Justification EMI within the required range Location Lulea EMC chamber
Conditions Normal humidity, Normal pressure(this refers to normal pressure and humidity), Temperature 25,0 and -10 deg C
Required Resources
EMI chamber
Unsecured Resources
EMI chamber
Date Duration 1 day Dependencies Participants Mikulas Jandak, and / or David Leal, technicians Procedure a) Entire electronic and motors are to be put into shielded EMI
chamber
b) The EMI radiation is be measured when the motors are
turning on and off.
Expected Results
The result should be a variable level of EMI. The level of EMI should
be highest when the motor s are turn on.
ID T06 Name Maximal Current Test
Components Tested
Entire electrical subsystems with motors
Purpose evaluate the EMI caused by motors, magnets and rapidly changing
electrical field
Justification Battery safety issue Location IRF Electronic Lab Conditions Normal humidity, Normal pressure(this refers to normal
pressure and humidity), Temperature 25,0 and -10 deg C Required Resources
HP 34401A
1Ohm 20W sensing resistor
Motor
Power Supply Pack
Unsecured Resources
Date Duration 2 hours Dependencies Participants Mikulas Jandak, and / or David Leal, technicians Procedure a) Shaft of the motor is to be fixed so it cannot spin.
b) Motor is to be connected to power supply pack capable of
delivering high current (>20A) for short period of time (long
enough to measure the current).
c) Current is to be measured as a voltage drop across the
sensing resistor by the multimeter.
Expected Results
The in-rush current should not be higher than stall current stated in
the motor datasheet.
ID T07 Name Maximal Current Test
Components Tested
Entire electrical subsystems with motors.
Purpose Evaluate the EMI caused by motors, magnets and rapidly changing
electrical field.
Justification Battery safety issue
Location IRF Electronic Lab Conditions Normal humidity, Normal pressure(this refers to normal
pressure and humidity), Temperature 25,0 and -10 deg C. Required Resources
HP 34401A
1Ohm 20W sensing resistor
Motor
Power Supply Pack
Unsecured Resources
Date Duration 2 hours Dependencies
Participants Mikulas Jandak, and / or David Leal, technicians Procedure a) Shaft of the motor is to be fixed so it cannot spin.
b) Motor is to be connected to power supply pack capable of
delivering high current (>20A) for short period of time (long
enough to measure the current).
c) Current is to be measured as a voltage drop across the
sensing resistor by the multimeter.
Expected Results
The in-rush current should not be higher than stall current stated in
the motor datasheet.
ID T08
Name Power Budget Test
Components Tested
Power Supply Pack
Purpose To test capacity and reliability of power supply with respect to the
low temperature.
Justification Battery safety issues Location IRF Electronic Lab Conditions Normal humidity, Normal pressure(this refers to normal
pressure and humidity), Temperature 25,0 and -10 deg C. Required Resources
2x HP 34401A
GPIB/ USB converter
GPIB –GPIB connecting cable
8Ohm 20W resistor
Power Supply Pack
Low Temperature Chamber
NI LabView
Unsecured Resources
Gas for the temperature chamber
Date Duration 10 hours Dependencies Participants Mikulas Jandak, and / or David Leal, technicians Procedure a) Power pack with sensing resistor should be put into low
temperature chamber.
b) Multimeters should be connected to PC and program written
in NI LabView is to be used to acquire the data. The
multimeters should monitor with the sampling rate of 1Hz
current and voltage.
c) After the voltage reaches x volt the experiment is to be ???
d) The capacity of the battery pack is to be evaluated with
respect to the voltage across the battery pack
Expected The capacity of the battery pack should be reduced by 20%. The
Results battery pack should operate during whole experiment and it should
be able to deliver 3A of current. There should be clear correlation
between the voltage across the battery pack and the battery
capacity.
ID T08 Name Power Budget Test
Components Tested
Power Supply Pack
Purpose To test capacity and reliability of power supply with respect to the
low temperature
Justification Battery safety issues
Location IRF Electronic Lab Conditions Normal humidity, Normal pressure(this refers to normal
pressure and humidity), Temperature 25,0 and -10 deg C Required Resources
2x HP 34401A
GPIB/ USB converter
GPIB –GPIB connecting cable
8Ohm 20W resistor
Power Supply Pack
Low Temperature Chamber
NI LabView
Unsecured Resources
Gas for the temperature chamber
Date
Duration 10 hours Dependencies
Participants Mikulas Jandak, and / or David Leal, technicians Procedure a) Power pack with sensing resistor should be put into low
temperature chamber
b) Multimeters should be connected to PC and program written
in NI LabView is to be used to acquire the data. The
multimeters should monitor with the sampling rate of 1Hz
current and voltage.
c) After the voltage reaches x volt the experiment is to be ???
d) The capacity of the battery pack is to be evaluated with
respect to the voltage across the battery pack
Expected Results
The capacity of the battery pack should be reduced by 20%. The
battery pack should operate during whole experiment and it should
be able to deliver 3A of current. There should be clear correlation
between the voltage across the battery pack and the battery
capacity.
ID T09
Name Heat Dissipation Test
Components Tested
Voltage Regulators
Purpose To make sure the amount of heat needed to be dissipated can be
done so properly.
Justification Ensure proper regulator operation
Location IRF Electronic Lab Conditions Normal humidity, Varying pressure from normal, to expected
pressure at maximum height, Normal room Temperature. Required Resources
HP 34401A
Resistor equivalent to the load as seen from the regulator
Voltage source
Temperature sensors
Low pressure chamber
NI LabView
GPIB –GPIB connecting cable
GPIB/ USB converter
Unsecured Resources
Low pressure chamber
Date
Duration 10 hours Dependencies Participants Mikulas Jandak, and / or David Leal, technicians
Procedure a) Setup the voltage regulator with the corresponding resistor.
b) Multimeters should be connected to PC and program written
in NI LabView is to be used to acquire the data. The
multimeters should monitor with the sampling rate of 1Hz
current and voltage.
c) Set Temperature sensors on the regulator
d) As the pressure on the chamber decreases, the electrical and
physical properties of the regulator will be measured and
evaluated.
Expected Results
The voltage regulators should be able to properly dissipate the heat
that results from the voltage conversion, and this way, continue to
operate properly during the entire test. In case the heat cannot be
properly dissipated, heat sinks will be added and the test redone.
ID T10 Name Regulator Low Voltage performance
Components Tested
Voltage Regulators
Purpose To test what the voltage threshold when the systems will stop
Conditions Normal humidity, , Normal pressure(this refers to normal pressure and humidity), Regular room temperature.
Required Resources
HP 34401A
Resistor equivalent to the load as seen from the regulator
Voltage source
NI LabView
GPIB –GPIB connecting cable
GPIB/ USB converter
Unsecured Resources
Date Duration 2 Hours Dependencies Participants Mikulas Jandak, and / or David Leal, technicians Procedure a) Setup the voltage regulator with the corresponding resistor.
b) Multimeters should be connected to PC and program written
in NI LabView is to be used to acquire the data. The
multimeters should monitor with the sampling rate of 1Hz
current and voltage.
c) Voltage being fed into the regulator will vary to find the real
limits at which the voltage regulator will still work properly.
Expected Results
The Voltage regulator should be able to work with over voltage, and
should be able to work properly with voltage as low as the desired
voltage plus the voltage drop in the device.
ID T11
Name Emergency Parachute deploying system
Components Tested
Emergency Parachute deploying system
Purpose To make sure the parachute deploying system works properly.
Justification Make sure the Emergency parachute deploying system works properly, to eliminate the risk of the FISH going into freefall and being a security threat to people.
Location IRF Electronic Lab Conditions Normal humidity, , Normal pressure(this refers to normal
pressure and humidity), Regular room temperature. Required Resources
Signal Generator
Emergency Parachute deploying system
Unsecured Resources
Date Duration 2 Hours Dependencies Participants Mikulas Jandak, and / or David Leal, technicians Procedure a) Send a signal to the system that would correspond to the
signal send by the free fall detector when in free fall.
b) Send random data, test for possible failures.
Expected The system should be triggered only by detecting the payload has
Results been in free fall for more that one minute.
Battery Test
ID B01 Name Battery Temperature Test
Components Tested
Power Supply Pack
Purpose To test capacity and reliability of power supply with respect to the
low temperature
Justification Battery safety issues Location Kiruna, dormitory Conditions Normal humidity, Normal pressure(this refers to normal
pressure and humidity), Temperature 25,0 and -10 deg C Required Resources
Metal Container
Battery Pack
Freezer
Oven
Unsecured Resources
Date
Duration 21 hours Dependencies Participants Mikulas Jandak, Jan Speidel Procedure a) Fully charged battery in the metal container is to be stored
in the temperature of -18 in the freezer for 2 hours
b) Battery is to be then stored in the temperature of +50 in the
oven.
c) The procedure above is to be repeat 5 times
Expected Results
There should be no electrolytes leakage
ID B02 Name Battery Drop Test
Components Tested
Power Supply Pack
Purpose To ensure that the battery pack is capable of surviving high level of
vibration
Justification Battery safety issues Location Kiruna Conditions Normal humidity, Normal pressure(this refers to normal
pressure and humidity), Temperature 0 deg C Required Resources
Battery Pack
Unsecured Resources
Date Duration 20 hours Dependencies Participants Mikulas Jandak Procedure Drop the battery from 10m height onto concrete surface
Expected Results
There should be no electrolytes leakage, no explosition, no fire
ID B03 Name Battery Thermo Shock Test
Components Tested
Power Supply Pack
Purpose To test safety performance of the power pack
Justification Battery safety issues Location Kiruna, dormitory Conditions Normal humidity, Normal pressure(this refers to normal
pressure and humidity), Temperature 0 deg C Required Resources
Battery Pack
Metal Container
Temperature sensor
Oven
Unsecured Resources
Date Duration 2 hours Dependencies Participants Mikulas Jandak Procedure a) The battery in the metal container is to be put in the oven
b) The temperature of the oven is to be raised at 5±1℃ per minute to
a temperature of 130±2℃ and remain there 60 minutes.
Expected Results
There should be no electrolytes leakage, no exposition, no fire
ID B04
Name Battery Discharging test
Components Tested
Power Supply Pack
Purpose To test safe charging and discharging of the battery power supply
pack
Justification Battery safety issues Location IRF Electronic lab, Kiruna Conditions Normal humidity, Normal pressure(this refers to normal
pressure and humidity), Temperature 0 deg C Required Resources
Battery Pack
2x multimeter HP 34401A
Smart Charger (1.5A) for 11.1V Li-ion/Polymer Rechargeable Battery
Pack
Resistor
Unsecured Resources
Date Duration 5 hours Dependencies Participants Mikulas Jandak Procedure a) The battery pack is to be charge by the smart charger, the current
and the voltage across the batter is to be monitor
b) When the charger indicates complatition, the current must drop to 0
and the voltage across battery must be less than 12.7 V
c) The battery pack is to be discharge at the approximate discharge
rate of 1C (2.2A) through the resisitor
d) When the voltage reaches 7.2V, the PCM (protection circuit
module) should disconnect the battery pack so no current should
flow through the resisitor.
Expected Results
The PCM should not allow the battery to be deeply discharge and
overcharge
Sensor Test, Calibration
ID S01 Name Infrared sensor calibration test
Components Tested
Sharp GP2D120
Purpose To test behavior of optical sensor with respect to temperature and
to test reaction of the system., to set threshold constant for ADC
Justification Overall objectives
Location IRF, Kiruna Conditions Normal humidity, Normal pressure(this refers to normal
pressure and humidity), Temperature 0 deg C,-20 deg C Required Resources
GP2D120
Multimeter HP 34401A
Assembled main payload and fish
Freezer
Ruler
Unsecured Resources
Date Duration 3 hours
Dependencies Participants Mikulas Jandak
Procedure a) The output of GP2D120 is to be measured with anything in the
sensor proximity. The measurement is to be repeated for several
turn on/off cycles. The output is to be measured by multimeter HP
34401A.
b) The procedure a) is to be repeated but with the fish in the entrance
to the main payload.
c) The appropriate threshold from the sensor is set and the reaction
time is to be evaluated. The delay is proportional to the distance
between bottom of the main payload and the fish. When the
approaching fish is sensed by the sensor, the main reeling motor is
to be stopped and the distance is to be measured. This is repeated
for several turn on/off cycles.
d) The sensor is put into a freezer for 1 hour in the temperature -20
deg C and the procedures above are to be repeated.
Expected Results
The reaction time should be constant for both 20 deg and -20 deg C
and there should be clear difference in the output of the sensor
when the fish is in the entrance and there is nothing in the close
proximity.
ID S02 Name Hall sensor calibration test
Components Tested
Radiometric Linear Hall Effect Sensor A1321
Purpose To test the behavior of hall sensors with respect to temperature, the
distance between the sensor and the magnet, and the operation of
the motor.
Justification Overall objectives Location IRF, Kiruna Conditions Normal humidity, Normal pressure(this refers to normal
pressure and humidity), Temperature 0 deg C,-20 deg C Required Resources
A1321
Multimeter HP 34401A
Counter
Assembled main payload
Freezer
Ruler
Unsecured Resources
Counter
Date Duration 10 hours Dependencies
Participants Mikulas Jandak Procedure a) The motor is off. The output of the hall sensor is to be measured by
HP 34401A with respect to the distance between the magnet
mounted on the bail and the number of pulses provided by the
incremental sensor mounted on the shaft. The pulses are to be
measured by the counter.
b) The emergency motor is to be put in proximity to the hall sensor
and the procedure a) is to be repeated.
c) The reel with hall sensors and motors is to be put into freezer in the
temperature of -20 deg and the procedure a) and b) is to be repeated
Expected Results
There should be linear dependency among the distance of the
magnet, number of pulses and the sensor voltage. The temperature
should have negligible effect of the output voltage.
ID S03 Name Inertial sensors bias temperature stability
Components Tested
MS8002.D, ADXRS150, LIS3L02AQ3
Purpose To measure the bias temperature coefficient.
Justification Overall objectives (precision) Location IRF, Kiruna Conditions Normal humidity, Normal pressure(this refers to normal
pressure and humidity), Temperature -40 deg C 85 deg C Required Resources
ADXRS150(6x)
LIS3L02AQ3(2x)
MS8002.D(1x)
15 x Multimeter HP 34401A
GPIB/USB converter
GPIB/GPIB connections cables
1x PC
Low temperature chamber
Precise temperature sensor
Oven
NI LabWindows™/CVI
Matlab
Unsecured Resources
Precise temperature sensor
Date It could accompanied other tests in the low temperature chamber which not produce vibrations
Duration 1-2days Dependencies
Participants Mikulas Jandak Procedure a) Inertial sensor are to be put into the low temperature chamber
b) The temperature, the voltages from 15 different sources (6 gyros, 3
3-axis accelerometers) are to be simultaneously measured by HP
34401A at the rate of 10Hz.
c) The temperature is to be changed from +25 de C to -40 deg C
d) The procedures above are to be repeated in the oven with the
temperature change between +25 to +80 for almost identical
position of the accelerometers.
e) The noise is to be filtered in matlab and the temperature bias
coefficient is to evaluated
Expected Results
The temperature bias coefficient should be linear within -40 to +80
range and it should be within the value specified in the datasheet.
ID S04 Name The calibration of the compass
Components Tested
Honeywell HMC6352
Purpose To calibrate the compass with the respect to the small magnet
positioning in the entrance to the main payload. To select
appropriate magnet in terms of size and optimally position it.