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EX1000
DATASHEET
EX1000 DATASHEET
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EX1000 DATASHEET
Table of Contents
1. INTRODUCTION............................................................................................................. 5
2. EX1000 COMPONENT LAYOUT ..................................................................................... 6
2.1 LIST OF COMPONENTS ............................................................................................ 6
2.2 EX1000 PINOUT....................................................................................................... 6
3. BOARD SPECIFICATION ................................................................................................. 7
3.1 ADC Analog inputs .................................................................................................. 7
3.2 Operational amplifier .............................................................................................. 8
3.3 4-20 mA Transducer inputs ................................................................................. 10
3.4 User interruption input. User INT ........................................................................ 12
3.5 RS232 inputs ........................................................................................................ 13
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EX1000 DATASHEET
Table of Figures
Figure 1. EX1000 Sensor Board......................................................................................... 5
Figure 2: EX1000 Component Layout ............................................................................... 6
Figure 3. 12 pin terminal block. Analog ADC inputs location. .......................................... 7
Figure 4. Analog ADC inputs Schematic design. ............................................................... 8
Figure 5. 12 pin terminal block. OA inputs location. ........................................................ 9
Figure 6.Voltage amplifier circuit diagram ..................................................................... 10
Figure 7. 12 pin terminal block. Current transducer inputs ........................................... 11
Figure 8. 4-20mA transducer inputs schematic design .................................................. 11
Figure 9. 12 pin terminal block. Digital inputs................................................................ 12
Figure 10. User_int inputs schematic design ................................................................. 12
Figure 11. Molex UART connectors ................................................................................ 13
Figure 12. UART inputs Pinout........................................................................................ 13
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EX1000 DATASHEET
1. INTRODUCTION
The MTS-EX1000 is designed to attach external sensors to the MTM-CMxx00
communication modules .
Different kind of sensors can be connected to the EX1000. Depending on its
performance and output type, It is possible to plug the following signals into this
board:



Digital signals
Current (range: 4-20mA) signals
Dynamic range Analog signals.
A 12 pin terminal block (phoenix contact) is used to connect the external sensors using
screw connections. The following type of sensors are allowed to be connected into the
EX1000 board




Rs-232 - controlled sensors
Current output sensors (range: 4-20mA)
Interruption - output sensors.
Analog output sensors.
The MTS-EX1000 can be plugged with all radio-modules (MTM-CMxx00). It is attached
to the radio-module board through the DF9 connector (HRS).
Figure 2. EX1000 attached to a CM3000
Figure 1. EX1000 Sensor Board
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EX1000 DATASHEET
2. EX1000 COMPONENT LAYOUT
2.1 LIST OF COMPONENTS
Model
LMV932
Brand
Texas
Instruments®
Description
Operational amplifier
MAX232
MAXIM®
RS-232 Transceiver
TB12B-F254R4
Modtronix®
Terminal block 12 pins
3 pin male Analog Devices®
header molex
Accelerometer
DF9B-51S-1V
51-pin Connector
Hirose®
Picture
2.2 EX1000 PINOUT
The EX1000 board has the following layout:
Figure 2: EX1000 Component Layout
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EX1000 DATASHEET
3. BOARD SPECIFICATION
The EX1000 has integrated several hardware options for connecting different kind of
sensors.
3.1 ADC Analog inputs
Within the EX1000 it is possible to connect 4 Analog output sensors, due to this board
is directly connected to the MPS430 integrated ADC through the terminal block
connector. If needed, it's possible to use a voltage divisor for the sensor output signal
conditioning, in order to be connected to the ADC in the correct V/I operation range. If
the sensor output doesn't need to be conditioned, there is no need to use the resistors
R2, R4, R6, and R8 which are connected to GND , neither R1, R3, R5, and R7 which are
connected to VCC.
Figure 3. 12 pin terminal block. Analog ADC inputs location.
The sensors which are connected to this ADC analog inputs (ADC0-ADC3) can be
acquired using an ADC 1,5v or 2,5v voltage reference (configurable by software).
For configuring and accessing to this inputs, directly connected to the integrated 12 bit
ADC, it's possible to reach it using an ADC software component supported by Tiny OS.
(use ADC 0-3 ONLY)
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EX1000 DATASHEET
Figure 4. Analog ADC inputs Schematic design.
In order to control the input data range properly, it is recommended to use resistance values
between 1kΩ ~ 1MΩ which reduce the error of ADC measurements. For example: If the ADC
input voltage is 5V (maximum), even using 2.5V as ADC reference voltage it will be saturated
(out of range); By another hand, if you use the ADC0 composed by R1 and R2 = 10 kΩ it may
express the voltage range between 0~2.5 V applying the voltage distribution law. However,
accurate data can be measured only if the measurement is doubled
3.2 Operational amplifier
The EX1000 provides 2 inputs connected to operational amplifiers. Each input is connector to
ADC4 and ADC5 only.
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EX1000 DATASHEET
Figure 5. 12 pin terminal block. OA inputs location.
This devices give users the possibility to amplify the sensor signal output (if needed) for
conditioning its output as ADC input with the correct range of values. Moreover it is possible
to measure data from the sensor, amplifying the sensor output by controlling the OA gain
value, though the connection of two resistors (configuring the OA in voltage amplifier
mode).
𝐺𝐴𝐼𝑁 𝐴𝑀𝑃1 = 1 +
𝑅10
𝑅9
𝐺𝐴𝐼𝑁 𝐴𝑀𝑃2 = 1 +
𝑅12
𝑅11
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EX1000 DATASHEET
Figure 6.Voltage amplifier circuit diagram
Moreover, a combination between OAs can be done for connecting balanced-input sensors.
* NOTE
1. In order to control the range of input data properly, only use the resistance values between
1kΩ~ 1MΩ, which reduce the error of ADC measurements.
2. Note that noise is also amplified while amplifying the original signal.
3. If batteries are used as source of power, the output voltage error may occurred . It can be
solved by reducing the used voltage as a amplifier bias input.
3.3 4-20 mA Transducer inputs
In case of current output sensors, the EX1000 has two inputs that can be configured as
4-20 mA transducers , which are directly connected to ADC6 y ADC7 of the MPS430
integrated ADC.
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EX1000 DATASHEET
Figure 7. 12 pin terminal block. Current transducer inputs
Figure 8. 4-20mA transducer inputs schematic design
It is recommended to be aware of the current input satisfy the CMxx00 current input
range. If the sensor current output is out of range, the voltage output may damage the
MOTE.
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3.4 User interruption input. User INT
Figure 9. 12 pin terminal block. Digital inputs
If the sensor attached is a digital sensor, it is possible to use 2 inputs directly
connected to the MPS430 (P2.0, P2.1) GIOs.
A sensor driver could be implemented in the MPS430 for controlling the EX1000 digital
sensor through this two inputs.
The digital signal range is 0 ̴ 3v.
Figure 10. User_int inputs schematic design
If needed , it is possible to generate a 0 ̴ 3v EX100 output signal through this to inputs,
adjusting the resistances with a defined value and connecting them to an adequate
voltage level.
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EX1000 DATASHEET
3.5 RS232 inputs
Apart from the possibilities described previously, it is possible to connect sensors
which needs to be controlled by RS-232 protocol directly to the EX1000 board, since in
this board exist 2 connectors directly connected to the MPS430 UARTS.
The connector used for this purpose are the Molex 51004-0300.
Figure 11. Molex UART connectors
This kind of serial sensors can be controlled by the mote directly , acquiring data and
doing the signal treatment in the same way that operates within the integrated or
directly connected sensors.
It is strongly recommended to be aware of how is performing the sensor UART which is
going to be connected to this inputs because if there is another controller integrated in
the sensor, it probably does not work if it is connected directly to this two connectors,
as well as if the voltage range of the output sensor is different from ± 9 - 12 v.
Figure 12. UART inputs Pinout
Document Version: v0.1 - 10/2010
©ADVANTIC Sistemas y Servicios S.L.
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