crio Multi-Channel Acquisition Unit mod. crio_vw01

Transcription

1 crio Multi-Channel Acquisition Unit mod. crio_vw01 DESCRIPTION crio_vw is the hardware module for the reading of the Vibrating Wire and NTC instruments, developed to be integrated into the platform CompactRIO National Instruments. Pizzi instruments, with more than 30 years of experience in developing, manufacturing and installation of sensors and systems for geotechnical and structural monitoring, has been selected and accredited by National Instruments as an alliance partner for the development of reading modules of vibrating wire sensors to be integrated in the CompactRIO platform. The module crio_vw has been developed by Pizzi Instruments in collaboration with the Technical Staff of National Instruments to allow the National Instruments System to integrate the vibrating wire instruments, widely used for accuracy, reliability and stability in all kind of geotechnical, structural and hydrological monitoring. The module crio_vw can read most of the vibrating wire sensors on the market and ensures a perfect integration into hw National Instruments. crio is a modular system which, thanks to its flexibility, can be connected to the interface modules and allows to realize any required solution for data acquisition or control activity. In combination with crio_vw allows you to create solutions that are extremely versatile and attractive for geotechnical, structural and hydrological monitoring systems. The integration of the CompactRIO + criovw system with the multiplexer modules developed by Pizzi Instruments are used to configure multichannel systems of centralization up to 128 sensors in the same system. The multiplexer is managed through the crio_dmux module, which consists of a dedicated communication driver between the multiplexers and the crio_vw. The main qualities of the solution CompactRIO + I / O Pizzi Instruments modules are: Versatility in the applications: integration and compatibility with I / O modules allow you to configure modular systems customized to meet specific technical requirements, Reliability and Accuracy in measurements and controls, High strength in the components to ensure applications in harsh environments, Easy to set up thanks to LabVIEW systems.

2 crio_d_mux01 crio_vw01 Mux8_2 APPLICATION The vibrating wire sensors due to their reliability, precision and stability are widely used in structural, geotechnical and hydrological monitoring. The integration between the Pizzi Instruments Vibrating Wire modules and the National Instruments CompactRIO system provides an optimal solution for automatic monitoring systems where there are vibrating wire instruments and whenever reliability, precision and integrability with additional controls are required to the system. Typical applications for the system with CompactRIO module Vibrating Wire are monitoring of: ---Dams ---Bridges ---Tunnel ---Landslides ---Structures near to construction zones or structural problems ---Mines ---Pipeline ---Pile ---Geotechnical, structural and hydrological monitoring FEATURES AND BENEFITS ---Reading interface for vibrating wire sensors developed by National Instruments CompactRIO systems ---High resolution in the VW and NTC measurement ---Possibility to configure multichannel systems with centralization up to n 128 channels in a single CompactRIO system. ---Versatility of the systems realized with CompactRIO + crio VW thanks to the integration of additional modules to be able to create a customized system. ---Analog filters to eliminate problems related to incorrect measurements due to electrical noise ---Simple configuration through interface developed in LabVIEW development environment Ease of application development control, measurement and analysis through the LabVIEW graphical programming environment ---Self-diagnostic for the control of the goodness of measurement, the correct operation of the module and the system, the quality of the signals of the sensors ---Possibility to interface with the majority of the wibrating wire sensors in commerce ---Robust system developed to work in critical work environments. ---Accurate system for overvoltage protection OPERATING PRINCIPLE The Vibrating Wire CompactRIO module has been developed in accordance with specifications and technical standards of NI. In order to guarantee the perfect functionality and compatibility with National Instruments hardware, the module has passed all the tests carried out by National Instruments Corporate NI in its offices in Austin, Texas Area, USA. NI CompactRIO is the embedded system for monitoring and control offered by National Instruments, a leader in automation and control. NI CompactRIO is composed of the NI embedded controller for communication and processing, the chassis in which is housed the chip FPGA (field programmable gate array) programmable by the user, a number of I / O modules hot-swappable, including modules developed and produced by Pizzi instruments. For programming and configuration the system uses the LabVIEW graphical programming tools. The module Vibrating Wire CompactRIO has been developed to ensure the reading of most vibrating wire sensors on the market, with a resolution of 0.02 Hz for the vibrating wire instrumentation and 24 bits for the NTC. The application of digital filters and self-diagnostic features eliminate the problems related to incorrect measurements due to electrical noise. The configuration of the system is done in a simple and intuitive interface configuration software platform built with LabVIEW graphical development. The potential of the programming environment of LabVIEW allow both a simple interface customization and configuration management of the system and the development of software platforms for professional monitoring, measurement and analysis of system and data monitoring.

3 SPECIFICATIONS General information Format Target Type of measurement Type of insulation Type of vibrating wire sensors Type of thermistor Conformity ROHS CompactRIO Windows / Real Time Vibrating Wire/ NTC temperature Ground insulation channel ground Piezometers, crackmeters, clinometers, straingauge, load cells, pressure cells, settlement cells, etc. NTC 3K Yes Analogical Input Channel 2 Resolution VW: 0,02 Hz/Temp. 24 bit Accuracy VW: 0,02 Hz/Temp. 0,1 C Sampling Frequency 1 S/s Measuring Range VW: Hz / Temp: - 40,0+80,0 C Simultaneous Sampling No Communication Typology Baud Rates External Power Supply Power Supply voltage Power Operation Mode Power sleep mode Voltage insulation between electronic module and power supply Insulation capacity between the electronic module and the power supply Insulation resistance between the electronic module and the power supply Interface BUS CompactRIO Clock frequency interface SPI Isolation voltage between electronic module and CompactRIO bus Maximum current absorption OperationMode Maximum current absorption SleepMode SPI 1 Mbit/s 9 36 Vdc 3VA 1VA 150 KV 200 pf max > 1 GigaOhm 1 Mhz 2500 Vrms 8 ma max 0,1 ma max Physical Characteristics Dimension (mm) 88x70x23 Weight (g) 140 Operating temperature (IEC ) C Storage temperature C (IEC ) Protection level (IEC 60529) IP 40 Operating humidity (IEC ) 10 90% RH non condensing Storage humidity 5 95% RH non condensing Pollution Degree (IEC 60064) 2 Maximum altitude mslm

4 Fig. 1 Layout of CRio_VW Type of measurement CRio_VW Type of measurement Range Misura UdM Type of sensor CV OG 0,1200 1,6000 Khz 2 Galileo Vibrating Wire ( Hz) CV OG1 0,1200 1,6000 Khz 2 Pizzi Instruments Vibrating Wire ( Hz) CV mode A 166,2 2222,2 µsec Vibrating Wire ( Hz) CV mode B 1440, ,0 Hz 2 x 10-3 Vibrating Wire ( Hz) CV mode F 6250, ,0 Hz 2 x 10-3 Vibrating Wire ( Hz) NTC -40,0 +80,0 C Thermistor NTC 3 K TEST Functional test Configuration According to the configuration of the system that you want to achieve, the CompactRIO Vibrating Wire module needs the following components: - StandAlone System: n. 1 vibrating wire sensor + thermistor Fig. 2 components of the stand alone system

5 - Multichannel System: up to 128 connected sensors Fig. 3 components of the Multichannel system Accessories MUX8_2 multiplexer, 8 channels, 2 wire Module crio_d_mux01 Module crio_vw01 crio_flat Cable CEN CEN CEN CEN Pizzi Instruments S.r.l. reserves the right to change the information contained in this document without notice. While the information contained herein is assumed to be accurate, Pizzi Instruments S.r.l. assumes no responsibility for any errors, omissions or misinterpretation. Doc. Rev01, 01/13 Pizzi-Instruments S.r.l. Tel/Fax : Via di Ripoli 207/e info@pizzi-instruments.it 50126, Firenze, Italia web: