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Water depth
measurement system WDMS
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The measuring box of the size
300x150x200 mm, made from stainless steel contains following electronic
elements (Fig. 1):· Ultrasonic card OPKUD 01/100 modified for
this system;· WDMS Interface - special interface, providing
connection between OPKUD card and RS485 Interface, containing
microcontroler for signal analysis;· RS 485 Interface KSR-01L;·
Sender/Receiver NAD_200 for 200kHz water depth measurement transducers (produces
short bursts with about 350Vp-p, with integrated switch and 33dB
receiving amplifier);· Pulser&Receiver for reference channel
(3MHz) - generates short pulses.· Power supplyConverter
RS232/RS485 for the connection between the system and computer
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Technical data |
| Measurement
depth |
10cm - 6m |
| Accuracy |
± 5mm
(long distance)0.1mm (short distance)With reference channel for
compensation of temperature and water quality changes |
| Interface |
RS232/RS485 |
| A/D
converter: |
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- Resolution: |
8 bits |
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- Sampling frequency: |
25 or 50MHz1 |
| Analog
parameters: |
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- Input amplifier gain: |
0dB - 40dB |
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- Sensitivity: |
50mV -
0.5Vpp |
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- Bandwidth |
0,1 - 25MHz |
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- Input impedance: |
50W, 10pF |
| Delay
time: |
Post trigger
256us, measurement accuracy better than 1ns |
| Data
buffer: |
2K,4K,8K or
16K1 |
| Input
attenuator |
10dB1 |
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1- software
selected |
| Characteristic
of the system |
This system can be used as precise sonar
or for many other purposes, where autonomic ultrasonic measurements are
necessary. Special versions of this device can be made. Many of such
devices can be connected to the network (using RS485 interface).
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| Software
Package: |
The software included can analyze
automatically reflected signals, measure the time of flight and
compensate environmental changes.
Optional it is possible to make software versions for the special needs
of the user.
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Data sheet WDSM
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