/// DAQ, SENSORS & INSTRUMENTATION NEWSROUND \\\


DAQ modules for high-voltage EV applications


Data acquisition measurement modules enable voltage temperature and vibration analysis on e-mobility products at battery cell or module level


High-isolation, compact CAN measurement modules for data acquisition in high-voltage en- vironments, such as electric vehicles and electric components, have been added to the CANSASfit range from IMC Test & Measurement. The HISO-UT-6 module can be applied for temperature and cell volt- age measurements as well as for vibration measurements with MEMS sensors. It appeals to users who, for example, con- duct thermal testing on high-voltage batteries as well as investigating the impact of mechanical load and vibration on durability. Both HISO modules ensure complete personal safety at up to 1,000V and can be docked to any other module in the CANSASfit series using the integrated click connector. The module meets such de- mands as acquiring temperature and voltage on individual bat- tery cells and on larger sub- modules or stacks up to 100V, as well as measurement of current shunts at a high volt- age level. At the same time, it allows for analysis of me- chanical strength with re- spect to vibration load, which is increasingly a focus in development and testing


of e-mobility components such as batteries or an entire HV infrastructure. The second new module,


HISO-T-8, offers 8 inputs for type K thermocouples on multi-channel connectors and allows safe and pre- cise temperature measurement at a level of up to 1,000 V. It is therefore suit-


able for thermal examination of high-volt- age electric and hybrid vehicle components such as batteries, fuel cells and supply circuits.


DAQ modules designed for


temperature, voltage and mechanical measurements for battery cells or modules in electric vehicles


 2021 /// DAQ, Sensors & Instrumentation \\\ 21


gauges measure pile-driver vibration


Construction firm uses strain gauges to cut noise when driving foundation piles for wind turbines into the seabed


This noise reduction method used by GBM Works involves fluidising the seabed with water jets, which helps the monopiles sink more quickly and quietly under their own weight. To assess this new system at a site in Maasvlakte, tests were carried out to mea- sure the vibrations and deformations using strain gauges supplied by HBK. Ac-


cording to Ben Arntz of GBM Works, when an 8m diameter steel foundation pile is driven, the noise production can reach 180 decibels. The vibration, the pressure waves and the loud noise have a negative effect on underwater life. Therefore regulations have been adopted to reduce the noise pro- duction. Under the new method, dozens of water jets inside the pile spray seawater into the seabed. As a result, the seabed takes on properties com- parable to those of quicksand. The resistance of the seabed decreases and the foundation pile sinks with the help of a vibratory hammer that re- places the hydraulic pile-driving rig. To assess the success of the method, a series of evaluations was conducted at 62 test installations to collect in- formation on the vibrations that arise and the effect on noise damping. To measure the strain in the monopiles, GBM Works chose to use strain gauges from HBK. These strain gauges are often used to monitor wind turbines. “When you exert pressure on steel monopiles, deformation occurs, and vibrations arise that cause noise. We measured those vibrations and also got some interesting information on fatigue in the foundation piles,’’ explains Arntz. Most of the data has now been analysed and the noise production of the solution with the vibratory hammer and the jet gun was compared to that of a traditional pile hammer, showing


a noise


reduction of 90-95 per cent thanks to the new system.


Strain


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40