DEWESOFT DS-VGPS-HS Manual del producto
DS-VGPS-HS
TECHNICAL REFERENCE MANUAL
DS-VGPS-HS V21-1
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DS-VGPS-HS
TECHNICAL REFERENCE MANUAL
1. Table of contents
1. Table of contents 2
2. About this document 4
2.1. Legend 4
3. GPS based system for position, speed and displacement measurement 5
3.1. Features 5
3.2. Options 5
3.3. Specifications 6
3.4. Device overview 7
3.5. Mounting the aerial 8
3.6. Warm-Up time 9
4. Scope of supply 10
5. Connection 11
5.1. Connector overview 11
5.1.1. Aerial connector 11
5.1.2. RS-232 interface 11
5.1.3. VGPS – Display connector 12
5.1.4. Mark input connector 12
5.1.5. Power supply connector 12
5.1.6. Cable for external power supply 13
5.1.7. Cable for connecting VGPS to VGPS-Display (optional) 14
5.2. Options 15
5.2.1. Brake trigger switch 15
5.2.2. Digital display 16
6. Installation of the DEWESoft X measurement software 18
6.1. Installation of the DS-VGPS-HS 20
6.2. Configuration of DEWESoft X for the DS-VGPS-HS 20
6.3. Channel setup 23
6.4. Measurement 25
6.5. Analysis 26
7. Warranty information 28
7.1. Calibration 28
7.2. Support 28
7.3. Service/repair 28
7.4. Restricted Rights 28
7.5. Printing History 29
7.6. Copyright 29
7.7. Trademarks 29
8. Safety instructions 30
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8.1. Safety symbols in the manual 30
8.2. General Safety Instructions 30
8.2.1. Environmental Considerations 30
8.2.2. Product End-of-Life Handling 30
8.2.3. System and Components Recycling 30
8.2.4. General safety and hazard warnings for all Dewesoft systems 31
9. Documentation version history 34
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2. About this document
2.1. Legend
The following symbols and formats will be used throughout the document.
Important
It gives you important information about the subject.
Please read carefully!
Hint
It gives you a hint or provides additional information about a subject.
Example
Gives you an example of a specific subject.
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3. GPS based system for position, speed, and
displacement measurement
3.1. Features
●Real 100 Hz GPS engine
●Portable and rugged construction
●Insensitivity to road surface (can be used on mud off-road, water, snow, ice,..)
●No calibration required
●Easy-to-install, easy-to-use
●Supports differential GPS (SBAS) as standard function
●Mark input for brake trigger switch
●Data over USB or COM with zero latency PPS sync
Image 1: DS-VGPS-HS
3.2. Options
●Brake trigger switch
●High bright display
●RTK-2 with 20 Hz or 100 Hz with L1/L2 and Glonass (all Rover and Base modes)
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3.3. Specifications
DS-VGPS-HS/HSC
NAVIGATION
Standalone (horizontal positioning)
1.2 m
Standalone (vertical positioning)
1.8 m
SBAS (horizontal positioning)
0.8 m (WAAS, EGNOS 0.3 m)
SBAS (vertical positioning)
1.2 m (WAAS, EGNOS 0.5 m)
Omnistar (horizontal positioning) *
-
Omnistar (vertical positioning) *
-
RTK (horizontal positioning) *
0.02 m
RTK (vertical positioning) *
0.02 m
Velocity accuracy
0.02 m/s
Roll & Pitch accuracy (dynamic)
-
Heading accuracy (dynamic with GNSS)
-
Slip angle accuracy
-
Range
Unlimited
Hot start time
< 10 s
Output data rate
20/100 Hz
GNSS
Supported navigation systems
GPS L1, L2* GLONASS L1, L2*
Supported SBAS systems
WAAS, EGNOS, MSAS, GAGAN, QZSS
ADDITIONAL FEATURES
PPS output
✓
IRIG B DC output
-
Dual antenna heading
-
RTK positioning
✓
HARDWARE
Interface
RS232 / USB, CAN, Analog, Digital
Operating voltage
9 to 36 V
Power consumption
250 mA @ 12 V
Operating temperatures
0 °C to 60 °C
Environmental protection
not IP rated
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Input protection
Polarity & short overvoltage protection
Shock limit
MIL-STD 810 F
Dimensions
115 x 93 x 35 mm
Weight
740 g
INERTIAL SENSORS
Accelerometer
-
Gyroscope
-
Magnetometer
-
Pressure sensor
-
APPLICATIONS
Synchronisation and timing with
DEWESoft DAQ
✓
Simple positioning
✓
Brake/Acceleration test
✓
Vehicle dynamics
-
Lane change
✓
Circle drive
✓
Chassis development
-
Advanced driver assistance systems
testing
✓
Comfort testing
-
Pass by Noise
✓
FuSi
✓
Orientation of different object
-
3.4. Device overview
With the DS-VGPS-HS, DewesoftX® offers the latest 100 Hz technology of GPS based speed and
displacement sensors. The result of this highest dynamic GPS receiver is the most easy to use
speed/distance sensor with that bandwidth. In addition to this no calibration drives for different road
conditions (ice, water, snow, off road) are needed.
Using the unique PPS sync technology of DewesoftX® the latency time of the digital interface (RS-232)
is corrected online.
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Beside the filter characteristic of the internal algorithm, the latency time on the serial interface is related
to the basic structure of any GPS-based sensor. After acquiring the GPS raw data, the time consuming
calculation to get the position and speed and the data transfer time will delay the data from the
DS-VGPS-HS.
Image 2: Device overview
The time information is also included inside the data stream. By comparing the latency free PPS pulse
on the RS232 interface with the time information inside the data stream, the latency time is completely
eliminated.
3.5. Mounting the aerial
The aerial supplied with the VGPS is designed to be mounted magnetically on top of the vehicle in a
horizontal plane. If the surface is not metallic, the aerial may be fixed by placing a piece of strong tape
over the top of the aerial. The positioning of the aerial is critical to the correct operation of the VGPS.
Note: For correct operation, the aerial requires a metallic subsurface with a minimal diameter of 15 cm.
This surface doesn’t have to be ferromagnetic.
The aerial picks up the signals from up to 12 satellites which are all in different places in the sky. These
satellites are not necessarily directly overhead, and can often be close to the horizon. Therefore it is best
to mount the aerial in a way that the least amount of metal obscures the view of the sky. On a domed
roof, place the aerial on the top of the dome. On an open car with a roll-over bar, place the aerial
horizontally on the highest point of the roll-over hoop and tape the wire securely to the frame. Although
the VGPS can work with at least three satellites, it's precision increases the more satellites it finds. If one
satellite disappears over the horizon, or behind an object, there are other satellites still in view.
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Image 3: Antenna mount
3.6. Warm-Up time
When the VGPS is used for the first time, has been moved more than 200 km or not used for 10 hours
(since last usage), it is recommended to perform a ‘cold start’. To get the best performance from your
VGPS in the future, perform this cold start in an open place with a good all round view to the sky. Allow
the VGPS to map the satellites for at least 20 to 30 minutes. The VGPS builds up the ‘Ephemeris’ data on
each satellite which is stored in non-volatile memory so that future satellite tracking is swift and stable.
Once the VGPS has carried out a successful cold start, future satellite lock from power up will take
between 15 seconds and 1 minute. Before going to test in a shady environment with tall objects or near
to trees, allow the VGPS to settle in an open space for 5 to 10 minutes.
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4. Scope of supply
Image 4: Scope of supply
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