Patent application number | Description | Published |
20100064821 | ULTRASONIC FLUID MEASURING DEVICE - An ultrasonic fluid measuring device capable of improving a measuring accuracy is provided. In an ultrasonic fluid measuring device | 03-18-2010 |
20100192702 | MULTILAYER FLOW PATH MEMBER OF ULTRASONIC FLUID MEASUREMENT APPARATUS AND ULTRASONIC FLUID MEASUREMENT APPARATUS - A multilayer flow path member of an ultrasonic fluid measurement apparatus and an ultrasonic fluid measurement apparatus capable of enhancing the measurement accuracy of the mean flow velocity are provided. When a multilayer flow path member | 08-05-2010 |
20120186350 | ULTRASONIC FLOW METER UNIT - The present invention provides an ultrasonic flow meter unit which can eliminate design factors associated with measuring performance, and improve general versatility and diversity. An ultrasonic flow meter unit of the present invention comprises a measurement fluid passage through which a fluid flows; a pair of ultrasonic transducers provided on the measurement fluid passage; and a measuring circuit board which measures a propagation time of an ultrasonic signal transmitted and received between the ultrasonic transducers, and calculates a fluid flow, lead pins bent with a predetermined angle are connected to terminals of the ultrasonic transducers, and the measuring circuit board is on-board mounted to the measurement fluid passage, and then the lead pins are connected to the measuring circuit board. | 07-26-2012 |
20120191382 | ULTRASONIC FLOW METER DEVICE - The present invention implements an ultrasonic flow meter device which does not require a complicated configuration such as a hermetic seal, in an inexpensive and easy manner. A typical ultrasonic flow meter device includes a fluid passage body, a measurement fluid passage placed within the fluid passage body, a pair of ultrasonic sensors, a wall defining the measurement fluid passage and attached with the ultrasonic sensors, a propagation time measuring means for measuring a propagation time of an ultrasonic sound wave propagating between the ultrasonic sensors, and a fluid flow calculating means for calculating a fluid flow based on a propagation time, and a seal member is provided between the fluid passage body and the wall to prevent a fluid from leaking. | 07-26-2012 |
20120266691 | CHANNEL MEMBER AND ULTRASONIC FLUID-MEASURING APPARATUS - Provided are a channel member and an ultrasonic fluid-measuring apparatus that can prevent the disturbance from occurring in the ultrasonic waves due to disturbance of a fluid. A channel member ( | 10-25-2012 |
20130036832 | ULTRASONIC FLOW RATE MEASUREMENT UNIT - The ultrasonic flaw-rate measurement unit of the invention includes a flow measurement path inside which fluid to be measured flows through and to which a case accommodating a pair of ultrasonic transducers is installed, a pair of ultrasonic transducers disposed in the flow measurement path, a measuring circuit substrate incorporating a propagation time measuring part measuring a propagation time between the ultrasonic transducer transmitter and receiver and a flow-rate calculating part calculating a flow rate of the fluid to be measured based on the propagation time measured by the propagation time measuring part, and a damping material filling an interior space of the case and covering the pair of ultrasonic transducers. | 02-14-2013 |
20130061686 | ULTRASONIC FLOW MEASUREMENT UNIT AND ULTRASONIC FLOWMETER USING SAME - Provided is ultrasonic flow measuring unit including: measurement path through which fluid to be measured flows; a pair of ultrasonic transducers disposed respectively upstream and downstream of measurement path and operable to transmit and receive an ultrasonic signal; and ultrasonic transducer attachment unit disposed in measurement path. Each of ultrasonic transducers includes piezoelectric element, terminal for applying a voltage to piezoelectric element, and acoustic matching layer adhered to a transmitting surface of terminal. Ultrasonic transducer is fixed to ultrasonic transducer attachment unit using an elastic coating material. | 03-14-2013 |
20130091958 | ULTRASONIC FLOW RATE MEASUREMENT DEVICE - An ultrasonic flow rate measurement device capable of sensing and correcting a temperature without use of a sensor specifically designed for measuring a temperature is provided. The ultrasonic flow rate measurement device includes a first ultrasonic transducer and a second ultrasonic transducer that re disposed in a flow volume measurement block and arranged in such a way that ultrasonic waves are transmitted from one transducer and received by the other transducer; a counter for measuring a propagation time consumed for exchanging the ultrasonic waves between the first ultrasonic transducer and the second ultrasonic transducers; a flow volume computing block that calculates a flow volume from a measurement value of the counter; an oscillation circuit used as a time counter when the counter calculates the propagation time; and a temperature sensing block for sensing a temperature by utilization of a frequency change attributable to a temperature of the oscillation circuit. | 04-18-2013 |
20130167655 | ULTRASONIC FLOW RATE MEASUREMENT DEVICE - Ultrasonic flow rate measurement device includes measurement flow path in which a fluid to be measured flows, and a pair of ultrasonic vibrators that are disposed in directions such that a propagation path of an ultrasonic wave forms a V-shape relative to measurement flow path. Moreover, the device includes measurement circuit which measures a flow rate of the fluid to be measured by measuring a propagation time of the ultrasonic wave between the pair of ultrasonic vibrators, and inlet-side rectification part which is disposed, in the inlet side of measurement flow path, to stabilize the flow of the fluid to be measured. Furthermore, the device includes outlet-side coupling part which is disposed in the outlet side of measurement flow path, and signal lead-out part which outputs a flow rate value measured with measurement circuit. | 07-04-2013 |
20130239699 | ULTRASONIC FLOW RATE MEASURING DEVICE - An ultrasonic flow rate measuring device includes a flow path, a partition plate that is inserted from an aperture to partition the flow path into plural sections, an ultrasound transmission body, plural ultrasonic transducers that are provided in positions facing a bottom plate such that an ultrasonic wave transmitted from one of the ultrasonic transducers through the ultrasound transmission body is reflected by the bottom plate and received by the other ultrasonic transducer, a measurement circuit that measures an ultrasonic propagation time between the plurality of the ultrasonic transducers; and a calculation circuit that obtains a flow rate of the target fluid based on a signal from the measurement circuit. | 09-19-2013 |
20140033827 | ULTRASONIC TRANSDUCER AND ULTRASONIC FLOW-METER - An ultrasonic wave transmitting and receiving unit includes: a piezoelectric member supporting plate; an acoustic matching member fixed to one surface of the piezoelectric member supporting plate; a piezoelectric member fixed to the other surface. Moreover, the ultrasonic wave transmitting and receiving unit includes: an insulating vibration suppressing member integrally formed in such a manner as to cover the piezoelectric member and the piezoelectric member supporting plate, wherein the insulating vibration suppressing member has a hole reaching the piezoelectric member supporting plate. | 02-06-2014 |
20140086017 | ULTRASONIC TRANSMISSION/RECEPTION UNIT, MANUFACTURING METHOD OF ULTRASONIC TRANSMISSION/RECEPTION UNIT, AND ULTRASONIC FLOW METER DEVICE - An ultrasonic transmission/reception unit includes a metal plate, an acoustic matching member, a piezoelectric substrate, a first lead wire, a second lead wire, and a vibration suppression member containing a thermoplastic resin as a major component, the vibration suppression member being configured to cover, in a unitary manner, the other main surface of the metal plate, which is other than a portion of the other main surface to which the piezoelectric substrate is fastened, a surface of the piezoelectric substrate, an end surface of the metal plate, an outer peripheral portion of the one main surface of the metal plate, the first lead wire, and the second lead wire. | 03-27-2014 |
20140130607 | MANUFACTURING METHOD OF ACOUSTIC MATCHING MEMBER, ACOUSTIC MATCHING MEMBER, ULTRASONIC TRANSMITTER/ RECEIVER UNIT INCORPORATING ACOUSTIC MATCHING MEMBER, AND ULTRASONIC FLOW METER DEVICE - Provided are an acoustic matching member with a fixed density, an ultrasonic transmitter/receiver unit with a high sensitivity, and an ultrasonic flow meter device which attains stable and high-accurate flow measurement. An acoustic matching member comprises hollow elements and a binding agent. The acoustic matching member is created by removing hollow elements having higher densities, hollow elements having cracks, etc., from hollow elements before sorting-out. Since the hollow elements having higher densities, the hollow elements having cracks, etc., are removed from hollow elements before sorting-out, it becomes possible to provide an acoustic matching member having fixed characteristics without being affected by a manufacturing lot and a transportation process of the hollow elements. An ultrasonic transmitter/receiver unit created using the acoustic matching member has fixed characteristics and is able to perform high-accurate flow measurement. | 05-15-2014 |
20140230568 | ULTRASONIC FLOW-METER - An ultrasonic flow-meter of the present invention includes a partition plate which partitions a passage of a target fluid into a measurement passage and a non-measurement passage, a pair of ultrasonic transducers which is disposed in the measurement passage, a measuring unit which measures a propagation time of an ultrasonic wave between the pair of ultrasonic transducers, and a calculating unit which calculates a flow rate of the target fluid. Further, the calculating unit has a computing unit which computes at least one of a flow velocity and a flow rate of the target fluid in the measurement passage based on the propagation time and an estimating unit which estimates the flow rate of the target fluid in the passage based on the flow velocity or the flow rate in the measurement passage. As a result, an ultrasonic flow-meter which highly accurately measures a target fluid by using a simple configuration can be realized. | 08-21-2014 |
20140345391 | FLOW METER DEVICE - A measurement control section of a flow meter device causes a measurement block dividing section to divide a sampling cycle Tc into three or more, for example, four measurement blocks Tb of an equal length and causes the flow measuring section to measure the flow of a fluid in each of the measurement blocks Tb. A flow calculating section of the flow measuring section calculates an average value of flow values obtained in all of the measurement blocks in each sampling cycle Tc, as a flow value in each sampling cycle Tc. This configuration allows a flow meter device which employs an inverse transit time difference method, such as an estimation gas meter, to more effectively lessen the influence of a pulsation and to perform flow measurement with higher accuracy. | 11-27-2014 |