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Measuring systems in industrial environments often require a more types of sensors to refine the quality of environment. Distributed measurement system SenSys is designed to measure 1-wire sensors, but the current offer of sensors despite their undeniable advantages is too narrow. Due to the cost optimization of the necessary cabling of other types of sensors, it is appropriate to use or extend the...
A possible technique to determine EMC safety distance of electro-initiated devices (EID) is the use of fiber-optic temperature sensors which are thermocoupled to the EID bridgewire [1]. Despite of excellent measurement properties, e.g. temperature range (typ. -100°C - 300°C) and temperature resolution (typ. 0.1°C) [2] theirs basic disadvantage is the limited speed of about 1 ms measurement rate. Therefore,...
This paper presents a low-cost, high-performance sensor interface for resistive platinum temperature sensors with a long connection cable. The interface design is based on the use of a relaxation oscillator. The effects of interference and parasitic elements are reduced by applying some classical and new measurement techniques in the sensor interface design. The sensor is supplied with a DC excitation...
A high bandwidth critical path monitor (1 sample/ cycle at 4-5 GHz) capable of providing real-time timing margin information to a variable voltage/frequency scaling control loop is described. The critical path monitor tracks the critical path delay to within 1 FO2 inverter delay with a standard deviation less than 3 FO2 delays over process, voltage, temperature, and workload. The CPM is sensitive...
A 53 dB gain limiting amplifier for OC-192 and 10 GbE applications is developed in a 50 GHz fT SiGe SOI complimentary bipolar process, and has 5 mV pk-pk sensitivity, 1.25 V pk-pk maximum input signal, 14 ps (20/80%) rise/fall times and 450 mV pk-pk output into matched differential 50 Ohm loads, consuming 430 mW on a 3.3 V supply. Input Cherry-Hooper gain stages limit the -3 dB bandwidth to 11 GHz...
The real time monitoring and control of resistance spot welds is a problem of critical importance in automotive and many other manufacturing industries. However, till this date, there are no reliable, low-cost, non-destructive techniques for predicting the size and strength of the weld nuggets in real time. This paper investigates the usage of voltage, current, and force data for the above tasks....
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