ME-Messysteme GSV-6BT User manual
6-Channel measuring amplifier GSV-6BT
Operation manual
date: 19/06/2018
edition ba-gsv6bt-v1.3-en
editor
changes Changelog Seite 13
ME-Me systeme GmbH
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ME-Me systeme GmbH
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Measuring amplifier GSV-6BT
Contents
Measuring amplifier GSV-6BT..............................................................................................................4
Description..........................................................................................................................................4
More functions..............................................................................................................................5
Software / Communication.............................................................................................................6
Current consumption........................................................................................................................8
Sensor connection.............................................................................................................................8
Pin assignment..................................................................................................................................9
Strain gauge full bridges..............................................................................................................9
SG half bridges............................................................................................................................10
SG quarter bridge.......................................................................................................................10
voltage input UE 0-10V..............................................................................................................10
Input for incremental encoder..................................................................................................11
Battery and maintenance charging.........................................................................................11
Auxiliary voltage supply for active sensors...........................................................................11
Digital inputs and outputs.........................................................................................................11
Function of the LEDs.................................................................................................................12
Changelog.........................................................................................................................................13
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Measuring amplifier GSV-6BT
Description
The GSV-6BT is a 6-channel measuring amplifier with Bluetooth interface and data logger
function. The dimensions are only 50mm x 20mm x 17mm.
The GSV-6BT has 6 measuring channels, of which the first channel is for full-bridge strain
gauges, while channels 2 to 6 can be individually configured as voltage input (single-ended)
or as strain gauge bridge input including half and quarter-bridge configuration.
Another seventh channel for acquiring digital pulses is available for connecting incremental
encoders or as an input for square wave signals.
The number of channels in the data transmission is configurable from 1 to 7 channels.
Channel 7 is reserved for the connection of incremental encoders, channel 1 is exclusively
for the connection of DMS full-half or quarter-bridges.
Channel 1 supports the reading of TEDS memories to automatically configure the scaling
factor for the connected sensor. In addition, two threshold outputs can be configured for
channel 1.
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6-channel measuring amplifier
Operation via Li-Ion battery 3.6V ... 4.2V
Integrated battery charging circuit with 5V supply voltage
Inputs configurable for full, half, quarter bridges, 350-1000 ohms, 0 ... 10V
1x Bluetooth 4.0 (LE) (GATT) or Bluetooth Classic (SPP) configurable,
Data logger function with SDCard up to 7x 2000 measured values/s
Real Time Clock
Send measured value: 6x 1 measured values/s ... 500 measured values/s
Simultaneous scanning of channels 1 to 3 and 2 to 6
Resolution <100 nV / V
Independent calculation of the 3 forces and torques for 6-axis sensors
Reading TEDS data on channel 1
counter / frequency / speed measurement on channel 7
Two operating hours counters, one absolute and one recoverable
The GSV-6BT has gold-plated solder pads for connecting the sensors and the
Supply voltage.
The Bluetooth connection supports BT Classic with Serial Port Profile (SPP) for complete
configuration and continuous messaging, and BT LowEnergy (LE) with some services
(GATT) for reading measurement data and battery voltage, e.g. via smartphone.
The measurement data can be recorded on a micro SD memory card, whereby there are
various configuration options, such as continuous recording up to 3000 readings per
second, long recording intervals with power management (battery saving mode) and digital
input triggered recording. The recorded files can also be downloaded via Bluetooth SPP. A
real-time clock creates timestamps in real time in the measurement data files.
More functions
•the connected 3.7V lithium-ion battery can be charged by an integrated charging
circuit.
•the temperature in the device and the battery voltage can be measured
•The simultaneous zeroing of all channels can be triggered via a digital input („tare“).
•The GSV-6BT is protected against vibration by a full encapsulation in a plastic
housing.
•The configuration and acquisition of measurement data is possible with the program
GSVmulti in the mode "BT Classic" with Serial Port Profile (SPP)
•The integrated Bluetooth module has its own microcontroller, which offers the self-
programming user a simple scripting language to implement their own embedded
applications. All functions of the GSV-6 CPU and all supported BT services as well as
additional digital outputs and a dedicated LED are available.
The factory-installed "BGscript" script serves the BT-LE requests and some SPP
commands needed to perform the functionality described here. Communication with
the GSV-6CPU is forwarded transparently.
•Using the microcontroller in the Bluetooth module and its BGscript amongst other
things the BT device name, the BT transmission power and various battery saving
modes are set, and the battery voltage is also displayed.
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Software / Communication
Firstly, the GSV-6BT has to be searched and found (with the battery plugged in) by the
Bluetooth driver of the BT adapter of the PC. The device name to display the GSV-6BT after
it has been found is the same as the serial number of the device indicated on the
nameplate. Some drivers may need to search manually for the supported services; SPP (BT
classic) and BT-LE are supported.
To use the Windows program GSVmultichannel, e.g. for configuration, the BT driver for SPP
must create a virtual COM port whose number should be known (otherwise look in the
Windows Device Manager), so that the program can connect to the GSV-6BT. Click on the
button "Add Channel".
The BT device search process does not need to be repeated later if the same device copy is
reopened with the same PC, and the COM port number will remain the same. If the host PC
or another GSV-6BT copy is changed, the search must be carried out again.
After connecting to the software or opening the COM port, the GSV-6BT is fully turned on,
the blue LED that indicates the active BT connection is lit as well as the green that indicates
that the GSV-6CPU analog amplifier electronics are on.
With GSVmultichannel can be configured among many other things whether the GSV-6CPU
should remain switched on after closing the BT connection or not. If it is off, this saves
battery charge, if it is on, e. g. the measurement data can be permanent recorded.
This and other Bluetooth-specific settings can be found in the program below:
Menu bar Device Advanced Settings Interface Bluetooth Settings→ → → →
Settings for recording can be found here:
Menu bar Device Advanced Settings Administration Measuring Value Logger → → → → →
Settings
There you can also open a file browser for the GSV-6BT SD card.
GSVmultichannel also provides a context help, which can be activated in the main window
via Menubar -> Help.
After the first or new connection of the battery (Li-ion battery), the real-time clock should be
reset. This is especially important when measuring data is to be recorded on an SD card.
When you first turn it on after plugging in a new battery or when it has been recharged and
completely empty, the red GSV6 LED flashes quickly 1.
With GSVmultichannel the real-time clock can be set here:
Menu bar Device Advanced Settings Administration→ → →
On the right side under "Device RTC time" click on the button next to the date / time display
1 it start with device software version 3.17
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and then select "Set time to now", confirm with OK.
GSVmultichannel can also be used to reset one of the two operating hours counters at the
same location. The operating hours counters work independently of the RTC.
The functions of the data logger and the frequency / tachometer or counter are described in
separate documents which can be downloaded from the product / shop page at www.me-
systeme.de.
For self-programming users, a Windows function library (MEGSV8w32.dll) with annotated C
header is available and for programming with LabView © a library with wrapper VIs for this
DLL.
For the use of the GSV-6BT in energy-saving mode "Bluetooth LE" Windows app is available.
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Current consumption
59 sec.
GSVonoff=2
Timeintervall>0
Period
Logger
seconds
2 min.
GSVonoff=2
Timeintervall=0
Period
Logger
Minutes
BT LE
BTmode=0
GSV off 1,2 mA 1,2 mA 1,2 mA
GSV on 53 mA 48 mA 48 mA
BT Classic
SPP
BTmode=1
GSV off 0,78 mA 0,78 mA 0,78 mA
GSV on 62,3 mA 48,7 mA 49,1 mA
After the mode change from BT-Classic to BT-LE: 0.78 mA
After the mode change from BT-LE to BT-Classic: 1.2 mA
Sensor connection
To correctly display and record physical values, the measurement amplifier must be
configured based on the connected sensor. If the sensor on Channel 1 is equipped with
TEDS and wired properly, it will take over the sensor configuration stored in the TEDS data.
This includes the system scaling ("AnalogOutScale"), the user scaling and the unit. The use
of TEDS can be deactivated in GSVmultichannel under menu bar -> sensor -> TEDS ... In this
dialog the TEDS data can also be read and displayed.
Sensors without TEDS can be configured with GSVmultichannel via the Configuration tab ->
Input Type and -> Scaling.
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Pin assignment
The connection of the sensors, the rechargeable battery and the voltage for charge / trickle
charging of the rechargeable battery is done via solder pads.
For the configuration, solder bridges are closed, e.g. for configuring the inputs of the inputs
for strain gage half bridges or strain gage quarter bridges
Strain gauge full ridges
Designation Ch 1 Ch 2 Ch 3 Ch 4 Ch 5 Ch 6
positive bridge supply US+ 11 10 9 3 2 1
positive bridge output UD+ 17 16 15 14 13 12
negative bridge output UD- 33 31 29 22 20 18
negative bridge supply US- 44 43 42 36 35 34
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+Us
R1
R2
R4
R3
-Ud
+Ud
-Us
SG half ridges
Designation Ch 1 Ch 2 Ch 3 Ch 4 Ch 5 Ch 6
Positive bridge supply US+ 11 10 9 3 2 1
Positive bridge supply US+ 17 16 15 14 13 12
Negative bridge output UD- 33 31 29 22 20 18
half bridge 32 30 28 23 21 19
Negative bridge supply US- 44 43 42 36 35 34
The active strain gauges R3 and R4 are connected to the terminals
+ Us, + Ud and -Us.
The internal half-bridge R1, R2 is activated with a bridge from HB
to -Ud.
[Ch1: 32-33, Ch2: 30-31, Ch3: 29-28, Ch4: 22-23, Ch5: 20-21, Ch6: 18-19]
SG quarter ridge
Designation Ch 1 Ch 2 Ch 3 Ch 4 Ch 5 Ch 6
Positive bridge output UD+ 17 16 15 14 13 12
negative bridge supply US- 33 31 29 22 20 18
half bridge 32 30 28 23 21 19
positive bridge supply US+ 44 43 42 36 35 34
350 Ohm quarter bridge Q350 57 56 55 54 53 52
1000 Ohm quarter bridge Q1k t63 62 61 60 59 58
The active strain gauge R3 is connected in 3-wire technology to
the terminals + Ud, QB and -Us.
The internal half-bridge R1, R2 is activated with a bridge from HB to -Ud.
[Ch1: 32-33, Ch2: 30-31, Ch3: 29-28, Ch4: 22-23, Ch5: 20-21, Ch6: 18-19]
voltage input UE 0-10V
Designation Ch 1 Ch 2 Ch 3 Ch 4 Ch 5 Ch 6
Negative bridge supply US- - 43 42 36 35 34
voltage input UE - 50 49 47 46 45
The analog input UE (single ended) measures voltages 0 ... 10V with respect to the US. The
potential of US corresponds to the potential of the negative battery voltage.
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+Us
R1
R2
R4
R3
+Ud
-Ud
-Us
HB
+Us
R1
R2
R4
R3
+Ud
-Ud
-Us
QB
HB
Input for incremental encoder
Designation No.
incremental encoder / I_index (Home/Index/Z) 4
incremental encoder / A-signal 5
incremental encoder / B-signal 6
Battery and maintenance charging
Designation No.
Battery charging connection ground 7
Battery charging port 4,5 – 5,5V 0,5A 8
Battery negative pole 64
Battery positive pole 65
Tare (Zero Setting) 24
Auxiliary voltage supply for active sensors
Designation No.
3,3 V Voltage output (10mA max) 25
GND 26
Digital inputs and outputs
Designation No.
Threshold output 2 37
Threshold output 1 38
Trigger input 39
IO_1 / PB4 BT121 27
IO_2 / PB5 BT121 40
GND_IO 41
IO_3 / PB6 BT121 48
TEDS communication-pin 51
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Function of the LEDs
Designation Description Nr.
BT Bluetooth Status: On: connected A
POW. GSV-6CPU On/Off B
GSV6 GSV-6CPU Status: flash codes, e.g. for
TEDS. constantly on / slowly flashing: File
open on SD card for writing. Do NOT
remove the card!
C
CHRG Battery charging indicator D
USER IO_4 per BGscript freely programmable LED E
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Changelog
version date amendments
ba-gsv6bt-v1.0.odt 25.02.18 First german version (Kab)
ba-gsv6bt-v1.1.odt 05.03.18 description extended (SW)
ba-gsv6bt-v1.2.odt 02.04.18 Power consumption added (Kab)
ba-gsv6bt-v1.3 03.04.18 Added (SW)
ba-gsv6bt-v1.0-en.odt 13.06.18 first english version (AE)
ba-gsv6bt-v1.3-en.odt 19.06.18 english version edited and added contents (AK)
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Änderungen vorbehalten.
Alle Angaben beschreiben unsere Produkte in allgemeiner Form.
Sie stellen keine Eigenschaftszusicherung im Sinne des §459 Abs. 2, BGB, dar
und begründen keine Haftung.
Made in Germany Copyright © 2018
ME-Me systeme GmbH
Printed in Germany
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