This paper describes a software tool for simulating the economic exploitation of flexible thermal loads, in particular by providing tertiary frequency control reserves and by intra-day trading. The tool consists of several components, comprising the simulation of the dynamics and the pooling of small load devices, the reserve capacity auctioning and delivery request mechanism of the transmission system operator, and the optimisation-based dispatch of control signals to the individual devices. The results of a time simulation of 5,000 heat-pump water heaters for large buildings (e.g. multi-family residences) are presented. Tertiary control provision leads to a yearly gross benefit of about EUR 100 per water heater, whereas for a combination of tertiary control with intra-day transactions, a yearly gross benefit of more than EUR 1,000 per water heater is expected.
Analyzing foot pressure is helpful in clinical diagnosis. Possible applications include the diagnosis of back injuries, prevention of diabetic foot ulceration, and adaptation of insoles for orthopedic applications. Consequently, several approaches to measure foot pressure distributions exist. However, traditional systems exhibit one common drawback: They are non-mobile or at least obtrusive and therewith influence the measurement. In the case of stationary pressure plates, people are only able to measure the foot pressure distribution in an unnatural context. The few available portable systems feature a lot of cables and large data processing computers, which render them unusable for everyday activities or long term measurements. To address these issues we have implemented Planipes, a mobile and versatile foot pressure measurement platform. It consists of a small sensor module that measures foot pressure distribution in real time and a smartphone application that allows to visualize, record, and analyze the data. Both parts are wirelessly connected through Bluetooth. Our system allows to unobtrusively measure foot pressure in real time during everyday activities, and to give feedback to the user. In contrast to existing systems it allows to measure foot pressure of a person over a longer period and in a natural environment, without influencing or impeding the user.
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