39results about How to "Fast and reliable detection" patented technology

A method for detecting islanding conditions in an electrical grid having a power line voltage includes monitoring a detectable signal different from the power line voltage at a generating station, superimposing the detectable signal onto the power line voltage at a grid point outside the generating station, and switching the generating station from a grid-connected mode of operation to an islanded mode of operation when the signal to which the detector is responsive is determined to be absent.

A system for performing channel estimation based on a received signal including both known (KS) and unknown (UKS) transmitted symbols, includes detector circuitry (CK1, ..., CKP,L; CM, DU) for detecting the unknown symbols (UKS) by assigning estimated values (EAS) to the unknown symbols, and channel estimator circuitry (M) for performing channel estimation by exploiting both the known symbols (KS) and the estimated values (EAS) assigned to the unknown symbols (UKS). The system has associated multiple receiving antennas. The system is preferably included in a CDMA receiver and the received signal includes known pilot bits (KS) and additional symbols, such as transmit power-control (TPC) commands, feedback information for transmitting antenna diversity, and a transport-format combination indicator (TFCI) that comprise the unknown symbols (UKS).

There is provided a wearable device for quantitatively detecting a biomarker in a sweat sample obtained from the skin of a subject. The wearable device comprises a microfluidic network. The microfluidic network comprises a reservoir filled with a carrier fluid containing a predetermined amount of a marker; a sample collection chamber disposed downstream from the reservoir and adapted to contact the skin of the subject and collect a sweat sample; a first sensor disposed downstream from the sample collection chamber and adapted to detect the marker; and a second sensor disposed downstream from the first sensor and adapted to detect the biomarker.

A vehicle heater (10) has a main body (12) carrying a non-intrinsically safe heat-conducting layer (14) and a temperature monitoring device (16, 18, 20, 44) assigned to the heat-conducting layer (14). The temperature monitoring devices (16, 18, 20, 44) are designed to recognize and report at least three of the following states: normal operation, reversible failure and irreversible failure. Furthermore, a method of monitoring a vehicle heater (10) is presented in which the following states are identified and reported: normal operation, reversible failure and irreversible failure.

The invention discloses a residual current coil disconnection detection device which comprises a CPU main control module, a residual current detection circuit, a communication module, and a power supply module. The CPU main control module is connected to the residual current detection circuit, the communication module, and the power supply module. The residual current detection circuit is connected to a residual current coil. The invention also discloses a detection method of the residual current coil disconnection detection device. According to the residual current coil disconnection detection device, whether an external connection residual current coil is disconnected or not can be detected, the device is convenient to use, the detection is rapid and reliable, and the device has a good application prospect.

The invention discloses a handset power supply method and system. The method can realize a function that a handset is compatible with a disposable battery and a lithium battery. The method comprises following steps: a battery mounting step in which the lithium battery or the disposable battery is mounted in a handset battery seat; a judging step in which a handset CPU judges that the mounted battery is the disposable battery or the lithium battery, if the mounted battery is the lithium battery, a lithium battery power supply step is executed, and if the mounted battery is the disposable battery, a disposable battery power supply step is executed; the lithium battery power supply step in which the lithium battery supplies power to the handset, and the handset is set in a rechargeable mode;the disposable battery power supply step in which the disposable battery supplies power to the handset, and the handset is set in a non-rechargeable mode. The technique scheme of the invention firstly judges the mounted battery is the disposable battery or the lithium battery, then determines whether providing the chargeable mode, in this way, not only the lithium battery and the disposable battery power can be used as the power supply of the handset, but also battery explosion accidents induced by miss-charging can be avoided.