Abstract: According to one aspect of the inventive concept there is provided a system for monitoring incontinence comprising: a urine sensitive circuit arranged to present a changed electrical characteristic when exposed to urine; a measurement circuit arranged to perform a measurement on a urine bladder of a wearer to determine at least one parameter which varies with a fill level of the urine bladder; a sensor arranged to determine an orientation and/or a movement of the sensor; and a processing circuit arranged to: determine whether the urine sensitive circuit has been exposed to urine; estimate an amount of urine released on to the urine sensitive circuit; and in response to determining that the urine sensitive circuit has been exposed to urine, record data representing said at least one parameter determined by the measurement circuit, an estimated movement and/or posture of the wearer based on an orientation and/or a movement determined by the sensor, and an estimate of the amount of urine released on to the urine

Abstract: According to one aspect of the inventive concept there is provided a method of monitoring incontinence for a user, comprising: determining, using a urine sensitive circuit provided at an absorbent article and arranged to present a changed electrical characteristic when exposed to urine, whether the user has urinated on the absorbent article, performing, using a measurement circuit, a measurement on the urine bladder to determine a parameter which varies with a fill level of the urine bladder, and in response to determining that the user has urinated on the absorbent article, recording, by a processing circuit, data representing said parameter.

Abstract: According to one aspect of the inventive concept there is provided a system for monitoring incontinence comprising: a urine sensitive circuit arranged to present a changed electrical characteristic when exposed to urine; a measurement circuit arranged to perform a measurement on a urine bladder of a wearer to determine at least one parameter which varies with a fill level of the urine bladder; and a processing circuit arranged to: determine whether the urine sensitive circuit has been exposed to urine, and in response to determining that the urine sensitive circuit has been exposed to urine, record data representing the at least one parameter determined by the measurement circuit.

Abstract: According to one aspect of the inventive concept there is provided a system for monitoring incontinence comprising: a urine sensitive circuit arranged to present a changed electrical characteristic when exposed to urine; a measurement circuit arranged to perform a measurement on a urine bladder of a wearer to determine at least one parameter which varies with a fill level of the urine bladder; a sensor arranged to determine an orientation and/or a movement of the sensor; and a processing circuit arranged to: determine whether the urine sensitive circuit has been exposed to urine; estimate an amount of urine released on to the urine sensitive circuit; and in response to determining that the urine sensitive circuit has been exposed to urine, record data representing said at least one parameter determined by the measurement circuit, an estimated movement and/or posture of the wearer based on an orientation and/or a movement determined by the sensor, and an estimate of the amount of urine released on to the urine

Abstract: According to one aspect of the inventive concept there is provided a method of monitoring incontinence for a user, comprising: determining, using a urine sensitive circuit provided at an absorbent article and arranged to present a changed electrical characteristic when exposed to urine, whether the user has urinated on the absorbent article, performing, using a measurement circuit, a measurement on the urine bladder to determine a parameter which varies with a fill level of the urine bladder, and in response to determining that the user has urinated on the absorbent article, recording, by a processing circuit, data representing said parameter.

Abstract: According to one aspect of the inventive concept there is provided a method of monitoring incontinence for a user, comprising: determining, using a urine sensitive circuit provided at an absorbent article and arranged to present a changed electrical characteristic when exposed to urine, whether the user has urinated on the absorbent article, performing, using a measurement circuit, a measurement on the urine bladder to determine a parameter which varies with a fill level of the urine bladder, and in response to determining that the user has urinated on the absorbent article, recording, by a processing circuit, data representing said parameter.

Abstract: According to one aspect of the inventive concept there is provided a system for monitoring incontinence comprising: a urine sensitive circuit arranged to present a changed electrical characteristic when exposed to urine; a measurement circuit arranged to perform a measurement on a urine bladder of a wearer to determine at least one parameter which varies with a fill level of the urine bladder; and a processing circuit arranged to: determine whether the urine sensitive circuit has been exposed to urine, and in response to determining that the urine sensitive circuit has been exposed to urine, record data representing the at least one parameter determined by the measurement circuit.

Abstract: According to one aspect of the inventive concept there is provided a system for monitoring incontinence comprising: a urine sensitive circuit arranged to present a changed electrical characteristic when exposed to urine; a measurement circuit arranged to perform a measurement on a urine bladder of a wearer to determine at least one parameter which varies with a fill level of the urine bladder; a sensor arranged to determine an orientation and/or a movement of the sensor; and a processing circuit arranged to: determine whether the urine sensitive circuit has been exposed to urine; estimate an amount of urine released on to the urine sensitive circuit; andin response to determining that the urine sensitive circuit has been exposed to urine, record data representing said at least one parameter determined by the measurement circuit, an estimated movement and/or posture of the wearer based on an orientation and/or a movement determined by the sensor, and an estimate of the amount of urine released on to the urine

Abstract: An autonomous transducer system is disclosed. In one aspect, the system includes an energy scavenging module, energy storage module, a load circuit having at least one functional block providing a given functionality, and a power management module arranged for providing power supplied by the energy scavenging module to the load circuit or for exchanging power with the energy storage module. The power management module may further include a tuning module configured to tune the at least one functional block of the load circuit according to a given configuration scheme.

Abstract: A self-powered sensor system includes an autonomous sensor unit including at least one energy harvester which converts an induced vibration into at least one electrical signal; a power management unit comprising analogue signal processing circuitry, said analogue signal processing circuitry being configured for extracting and generating, from said received at least one electrical signal, at least one digital output signal indicative of a sensed physical state and at least one electrical power signal; and at least one user unit comprising electronic circuitry being powered by said at least one electrical power signal and/or receiving said at least one digital output signal provided by said power management unit. The description also relates to an electronic or network system, a machine or part thereof, a tire or wheel, or a means of transport including a self-powered sensor system according to embodiments described herein.

Abstract: A micro-power system and a tire pressure monitoring system that includes an energy harvesting module and a computing device are disclosed. In one aspect, the energy harvesting module comprises an energy harvesting unit having a combined vibration energy/RF energy harvester. A single sensing element is used for both vibration energy harvest and for RF communication including RF energy harvesting. Energy harvested is transmitted to power management module which powers components of the energy harvesting module. Data relating to sensor output from the single sensing element is transmitted to a microcontroller and transmitted to a microprocessor unit on the computing device.

Abstract: An autonomous transducer system is disclosed. In one aspect, the system includes an energy scavenging module, energy storage module, a load circuit having at least one functional block providing a given functionality, and a power management module arranged for providing power supplied by the energy scavenging module to the load circuit or for exchanging power with the energy storage module. The power management module may further include a tuning module configured to tune the at least one functional block of the load circuit according to a given configuration scheme.

Abstract: The present invention relates to a method for determination of the state-of-charge (SoC) of a rechargeable battery as a function of the Electro-Motive Force (EMF) prevailing in said battery. The invention also relates to a method for measuring the relation between the state-of-charge (SoC) and the EMF. The invention further relates to an apparatus for determination of the State-of-Charge (SoC) of a rechargeable battery as a function of the Electro-Motive Force (EMF) prevailing in said battery.

Abstract: The invention relates to a method and an apparatus, like a charger for determining the state-of-charge of a battery which has been charged or discharged and which has not reached its equilibrium state, the method comprising the steps of determining the EMF of the battery by extrapolation of the battery voltage sampled during relaxation after the charge or the discharge process, wherein the extrapolation is based on a model using only variables sampled during the relaxation process and deriving the state-of-charge from the EMF of the battery by using a predetermined relation between the EMF and the state-of-charge. This method is a voltage-prediction method without the need to store parameters beforehand. Instead, the voltage relaxation end value is determined based on the measured first part of a voltage relaxation curve and mathematical optimisation/fitting of a function to this measured part of the relaxation curve.

Abstract: A system and method for estimating remaining run-time of an autonomous system by indirect measure is disclosed. In one aspect, the system includes a load circuit, an energy storage system (ESS) and an energy storage management system (ESM). The load circuit includes functional blocks. The ESS stores electric energy and is connected to the load circuit and configured to supply the varying electric current to the load circuit. The ESM is configured to estimate a remaining run-time of the autonomous system. The ESM includes an input connected to one of the functional blocks of the load circuit from which a first parameter being an indirect measure for the varying electric current supplied from the energy storage system to the load circuit is received. The ESM determines the remaining run-time from this first parameter.

Abstract: Disclosed is a method of estimating the state-of-charge of a rechargeable battery, taking into account the factors battery spread and ageing. The method comprises the steps of: determining the starting state-of-charge of the battery by measuring the voltage across the battery and converting this measured value into a state-of-charge value; charging the battery; integrating the charge current and determining the accumulated charge during charging of the battery and adding said value to the starting state-of-charge. Also disclosed is a method for determining the use time left of a rechargeable battery.