Patent application number | Description | Published |
20080278145 | Process measurement instrument adapted for wireless communication - A process measurement instrument adapted for wireless communication, comprising a measurement unit ( | 11-13-2008 |
20090034667 | METHOD AND DEVICE FOR PROVIDING TIMING INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - A method and a device of providing timing information within a wireless communication system is described. The timing information is extracted from a received transmit signal. The inventive method comprises the steps of providing a training signal on the receiver side relating to a known signal portion of the transmit signal, scaling the training signal, quantizing the scaled training signal, correlating one or more parts of the received transmit signal with the scaled training signal to obtain one or more correlation results, and determining the timing information on the basis of the correlation results. | 02-05-2009 |
20090052598 | METHOD AND DEVICE FOR PROVIDING TIMING INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - A method and a device of providing timing information within a wireless communication system is described. The timing information is extracted from a received transmit signal. The inventive method comprises the steps of providing a training signal on the receiver side relating to a known signal portion of the transmit signal, scaling the training signal, quantizing the scaled training signal, correlating one or more parts of the received transmit signal with the scaled training signal to obtain one or more correlation results, and determining the timing information on the basis of the correlation results. | 02-26-2009 |
20090305650 | WIRELESS TRANSCEIVER - The present invention relates to a method for determining a distance between a wireless transceiver and a wireless receiver arranged to communicate with each other in a wireless communication network, the wireless receiver having an active and an inactive reception state, the method comprising transmitting, with the wireless receiver in the active reception state, a first transmission signal, receiving a first reflection signal, the first reflection signal being a reflection of the first transmission signal and influenced by the active reception state of the wireless receiver, transmitting, with the wireless receiver in the inactive reception state, a second transmission signal, receiving a second reflected signal, the second reflection signal being a reflection of the second transmission signal and influenced by the inactive reception state of the wireless receiver, and determining a distance between the wireless transceiver and the wireless receiver based on the second reflection signal. | 12-10-2009 |
20110072909 | FLOW MEASUREMENT USING NEAR FIELD MICROWAVES - A flow meter for measuring flow rate and flow composition of a process fluid includes a microwave source configured to generate a microwave signal. A probe tip is coupled to the microwave source and in near field proximity to the process fluid. The probe tip is configured to apply the microwave signal to the process fluid. A microwave detector coupled to the probe tip is configured to detect a near field microwave signal from the process fluid in response to the applied microwave signal. Flow calculation circuitry determines flow rate and/or composition of the process fluid as a function of the detected microwave signal. | 03-31-2011 |
20120010838 | CALIBRATION OF A DISTANCE MEASURING DEVICE - Calibration of a device using electromagnetic waves to determine a distance to a surface, which device comprises a pulse generator, a real time sampler and a calibration unit having a signal generator for generating a calibration signal with a predefined frequency. | 01-12-2012 |
20130057425 | PULSED LEVEL GAUGE SYSTEM WITH CONTROLLABLE DELAY PATH THROUGH SELECTED NUMBER OF DELAY CELLS - A level gauge system comprising transmission signal generating circuitry for generating a transmission signal; a propagation device connected to the transmission signal generating circuitry and arranged to propagate the transmission signal towards a surface of the product inside the tank, and to return a reflected signal resulting from reflection of the transmission signal at the surface of the product contained in the tank. The level gauge system further comprises reference signal providing circuitry configured to provide a reference signal. At least one of the transmission signal generating circuitry and the reference signal providing circuitry comprises delay circuitry. The delay circuitry comprises a plurality of delay cells, and controllable switching circuitry arranged and configured to allow formation of a delay path comprising a subset of the plurality of delay cells connected in series, to thereby allow control of a signal propagation delay of the delay circuitry. | 03-07-2013 |
20130057426 | PULSED LEVEL GAUGE SYSTEM WITH SUPPLY VOLTAGE CONTROLLED DELAY - A level gauge system comprising transmission signal generating circuitry for generating a transmission signal; a propagation device connected to the transmission signal generating circuitry and arranged to propagate the transmission signal towards a surface of the product inside the tank, and to return a reflected signal resulting from reflection of the transmission signal at the surface of the product contained in the tank. The level gauge system further comprises reference signal providing circuitry configured to provide a reference signal. At least one of the transmission signal generating circuitry and the reference signal providing circuitry comprises delay circuitry. The delay circuitry comprises at least one delay cell exhibiting a propagation delay for pulses passing through the at least one delay cell that varies in dependence of a supply voltage provided to the at least one delay cell, and voltage control circuitry connected to the at least one delay cell. | 03-07-2013 |
20130069795 | CALIBRATION OF A LEVEL GAUGE SYSTEM - A method of calibrating a level gauge system using electromagnetic signals to determine a filling level of a product in a tank. The level gauge system comprises a real time sampler for sampling a reflection signal with a sampling period between consecutive samples. The method comprises the steps of: receiving timing signals from a wireless communication network; generating time stamp signals based on the timing signals; registering a number of the sampling periods between a first time stamp signal and a second time stamp signal; and determining the sampling period based on the registered number of sampling periods and a time between the first time stamp signal and the second time stamp signal. Various embodiments of the present invention provide for high accurate determination of the filling level in a tank without the need for a temperature stable and highly accurate clock reference in the level gauge system. | 03-21-2013 |
20130069817 | INTERMITTENT SURFACE MEASUREMENT - A method of determining a filling level of a product contained in a tank, the method comprising the steps of: a) transmitting an electromagnetic probing signal towards a target area of a surface of the product; b) receiving a reflected probing signal being a reflection of the electromagnetic probing signal at the surface; c) determining a parameter value indicative of an amplitude of the reflected probing signal; if the parameter value is indicative of an amplitude larger than a predetermined threshold value: d) transmitting an electromagnetic measuring signal towards the target area of the surface; e) receiving a return signal being a reflection of the electromagnetic measuring signal at the surface; and f) determining the filling level based on a time relation between the electromagnetic measuring signal and the return signal. | 03-21-2013 |