| The VP21 is a simple single sensor solution to a wide variety of inertial analysis problems. Three solid state rate gyros are combined with three micro-machined silicon accelerometers to provide complete 6 degree of freedom measurement capability. The operating levels and frequencies have been chosen to encompass the ‘human response’ band thus making the VP21 especially suitable for the analysis of vehicle ride and handling. The VP21 can be connected directly to Lamerholm’s sophisticated signal analysis system, the RD230, to achieve a uniquely cost effective portable inertial measurement system.
Key Features
|
|
- Complete Inertial measuring system
- Rugged solid state design
- Direct connection to RD230 data logger
- Vibrating structure solid state gyros
- Micro-machined silicon accelerometers
- Single 12V supply operation
- DC to 60 Hz frequency response
- Designed and manufactured in UK
|
Specification
| Rate Gyro Specification |
|
min |
max |
| Sensitivity |
|
19 |
21 |
| Working range |
|
-100 |
100 |
| Sensitivity variation (all clauses) |
|
-5 |
5 |
| Bias variation over temperature |
|
-1.5 |
1.5 |
| Bias variation run-to-run |
|
-0.1 |
0.1 |
| Bias variation in-run |
|
-0.05 |
0.05 |
| Noise (0.1 to 100 Hz) |
|
|
0.8 |
| High frequency phase response <90° error |
|
60 |
|
| |
|
|
|
| DC Accelerometer Specification |
|
min |
max |
| |
|
|
|
| Sensitivity |
@ DC |
390 |
410 |
| Variation of sensitivity over temperature |
|
-2 |
2 |
| Frequency response :ref DC (over full temperature range) |
|
|
|
| @ 60 Hz |
|
-1 |
1 |
| DC bias at room temperature |
|
-0.1 |
0.1 |
| DC bias over temperature |
|
-0.3 |
0.3 |
| Output for test input - logic high |
|
-6 |
-3 |
| Transverse sensitivity |
@ DC |
-2 |
2 |
| Noise @ 100 Hz Bandwidth |
|
|
5 |
| Maximum acceleration |
operate |
-5 |
5 |
| |
|
|
|
| Common Specification |
|
max |
min |
| |
|
|
|
| Supply Voltage |
|
15 |
11 |
| Supply Current |
|
400 |
|
| Operating Temperature |
|
-20 |
50 |
| Maximum acceleration |
survival (repetitive 1/2 sine) |
-20 |
20 |
| Case material |
|
|
|
| Weight |
|
1.5 |
|
| Dimensions |
120mm x 122mm x 90mm |
| Connector |
Fischer series 104 16 pole |
Performance (@ 25°C,5.000V supply unless stated)
| VP21
|
Function
|
D Connector A
|
D Connector B
|
6 way connector
|
RD230 Function
|
| 1
|
0 V DC
|
|
|
f
|
0 V
|
| 2
|
12 V Supply
|
|
|
e
|
12 V DC
|
| 3
|
Gyro Y Output
|
1
|
|
|
Analogue Inp
|
| 4
|
Gyro Y REF Output
|
14 & 17
|
|
|
Analogue Inp
|
| 5
|
Acc X Output
|
|
1
|
|
Analogue Inp
|
| 6
|
ACC X REF Output
|
|
14
|
|
Analogue Inp
|
| 7
|
Gyro X Output
|
2
|
|
|
Analogue Inp
|
| 8
|
Gyro X REF Output
|
15
|
|
|
Analogue Inp
|
| 9
|
ACC Y Output
|
|
2
|
|
Analogue Inp
|
| 10
|
ACC Y REF Output
|
|
15
|
|
Analogue Inp
|
| 11
|
Gyro Z Output
|
3
|
|
|
Analogue Inp
|
| 12
|
Gyro Z REF Output
|
16
|
|
|
Analogue Inp
|
| 13
|
ACC Z Output
|
|
3
|
|
Analogue Inp
|
| 14
|
ACC Z REF Output
|
|
16
|
|
Analogue Inp
|
| 15
|
Reserved
|
4
|
|
|
Analogue Inp
|
| 16
|
Test Input
|
12
|
|
|
Analogue Inp
|
If you would like to find out more, please contact us.
The VP21 accelerometer includes features which are the subject of world wide patents or patent applications. While the information contained in this document is believed to be accurate no responsibility can be accepted for its use, nor for any infringements of patents or other rights of third parties which may result from its use. Lamerholm Electronics reserve the right to modify performance specifications without notice.
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