Abstract: There is provided a method in a wireless base station (300), the method comprise transmitting, to a wireless device (100) having a reduced data bandwidth or a reduced control and data bandwidth, control and data signalling within a first bandwidth, in respective control and data regions, wherein signalling within the data region intended for the wireless device (100) is constrained within a second bandwidth which is narrower than the first bandwidth.

Abstract: There is provided a method in a wireless base station (300), the method comprise transmitting, to a wireless device (100) having a reduced data bandwidth or a reduced control and data bandwidth, control and data signalling within a first bandwidth, in respective control and data regions, wherein signalling within the data region intended for the wireless device (100) is constrained within a second bandwidth which is narrower than the first bandwidth.

Abstract: There is provided a method in a wireless base station (300), the method comprise transmitting, to a wireless device (100) having a reduced data bandwidth or a reduced control and data bandwidth, control and data signalling within a first bandwidth, in respective control and data regions, wherein signalling within the data region intended for the wireless device (100) is constrained within a second bandwidth which is narrower than the first bandwidth.

Abstract: There is provided a method in a wireless base station (300), the method comprise transmitting, to a wireless device (100) having a reduced data bandwidth or a reduced control and data bandwidth, control and data signalling within a first bandwidth, in respective control and data regions, wherein signalling within the data region intended for the wireless device (100) is constrained within a second bandwidth which is narrower than the first bandwidth.

Abstract: A smart monitoring and wireless query system is disclosed which includes a sensor suite, an RFID chip, and a microcontroller. The sensor suite with appropriate sensors can be mounted to a separate circuit board installed in a housing of a fixture with the RFID chip in proximity to the sensors. The sensor suite includes, but is not limited to, various sensors for monitoring humidity, light intensity, temperature, and/or power consumption to determine the entire status of a product. A microcontroller can be employed to determine the condition of the fixture from the sensor inputs and convert that information into an RFID signal having a specific timing and pattern. A remote reader can receive said RFID signal pattern from the fixture and can then decode the signal in order to identify which particular fixture from which the signal is received and the status of that particular fixture.

Abstract: An airport inset light for an airport runway light system comprises a light fixture incorporating a light source that is covered with a lens. A flow path can be provided in the light fixture such that air can pass unrestrictedly between an exterior environment and an interior space of the light fixture. The flow path can be covered or filled with a hydrophobic filter material, which allows for the light fixture interior to exchange air with its exterior environment. Such a flow path can create pressure equalization between the exterior environment and the light fixture interior to prevent the formation of a vacuum in the light fixture interior. Hence, it can eliminate the possibility of water entering the interior of the light source due to pressure differential between the environment and the light source interior.

Abstract: An acoustic wave sensor system for monitoring the etch rate or etch ability of a selective material has an acoustic wave sensing device having a piezoelectric substrate and at least one electrode coupled to the substrate for generating a propagating acoustic wave and for detecting changes in frequency or other propagation characteristics of the acoustic wave. A selective material is disposed on the substrate. Changes in propagation characteristics of the wave caused by etching of the selective material by an etchant can be analyzed to evaluate the etching rate or etch ability of the selective material. The sensing system can have a wireless sensing device which device is mountable in an oil filter system for monitoring the corrosion of the engine. The sensing device can be configured as BAW, SH-SAW, SH-APM, FPM devices or other acoustic wave devices.

Abstract: An oil quality sensor system comprise an acoustic wave viscosity and an etch rate sensor. The etch rate sensor system includes a piezoelectric substrate and one or more sensing layers configured upon the piezoelectric substrate. A layer of gold is generally configured above the sensing layer(s), such that the gold layer provides protection to the sensing layer(s), thereby extending the operating life of the resulting etch rate sensor system. The sensing layer(s) generally comprises one or more reactive electrodes. The etch rate sensor system can be adapted for use in a permanent oil quality sensor application.

Abstract: A wireless oil filter sensing system includes an oil filter and a sensing mechanism that is connectable to the oil filter. The sensing mechanism includes one or more acoustic wave sensing elements and at least one antenna that communicate with the acoustic wave sensing element(s). An external interrogation system could excite the acoustic wave sensing element(s) wireless and passively. When the acoustic wave sensing elements are in contact with oil contained in the oil filter, the acoustic wave sensing elements detect acoustic waves associated with the oil in response to an excitation of the acoustic wave sensing elements, thereby generating data indicative of the quality of the oil for wireless transmission through the antenna(s).

Abstract: A multiple-mode acoustic wave sensor apparatus includes an acoustic wave device comprising a piezoelectric substrate and at least one electrode on the substrate. When such sensor is used in a wireless configuration, a plurality of antennas can be configured on the substrate in association with the acoustic wave device, wherein each antenna among the plurality of antennas is responsive to varying interrogation signals transmitted wirelessly to the plurality of antennas in order to excite multiple frequency modes via at least one interdigital transducer on the substrate and thereby passively detect multiple and varying parameters of a sensed material utilizing the acoustic wave device.

Abstract: An acoustic wave acceleration sensor comprises an acoustic wave device including a plate that functions as a propagation medium and at least one interdigital transducer configured upon the plate. One or more antennas can be integrated with the acoustic wave device, wherein the antenna(s) communicates with interdigital transducers. Such antennas can receive wireless interrogation signals and transmit signals indicative of acceleration data.

Abstract: A lubricity sensor includes a flexural plate wave device and a face shear mode bulk acoustic wave device, which is associated with and located proximate to the flexural plate wave device. The face shear mode bulk acoustic wave device and the flexural plate wave device form a lubricity sensor wherein acoustic wave data produced by the flexural plate device together with the face shear mode bulk acoustic wave device when the lubricity sensor is exposed to a liquid relates directly to a lubricity of the liquid thereby providing lubricity measurement data associated with the liquid. The acoustic wave data can comprises the oscillation gain compensation, the frequency, amplitude and/or phase velocity associated with the flexural plate device and the shear mode bulk acoustic wave device such that the oscillation gain compensation, the frequency, amplitude and/or phase velocity provide an indication of the lubricity of the liquid.

Abstract: An acoustic wave particulate sensor system is disclosed, which includes a piezoelectric substrate; and one or more acoustic wave sensing elements formed upon said piezoelectric substrate. A housing can be provided for maintaining said piezoelectric substrate and the acoustic wave sensing elements, wherein the acoustic wave sensing elements, when exposed to a substance containing particulates, such as, for example, engine oil, responds to a phase change, frequency change, and/or noise level change associated with said particulates in order to identify a noise signature of said particulates and therefore identify differences among said particulates to detect data associated with said particulates.

Abstract: A method and system for detecting oil quality. The quality of engine oil can be determined utilizing an acoustic wave sensor to obtain viscosity and corrosivity data associated with the engine oil. The acoustic wave sensor is coated with a material that selectively reacts to at least one type of an acid in order to provide data indicative of the presence of the acids in the engine oil. The etch rate or the corrosivity of the engine oil can be determined based on the frequency data obtained as a result of the frequency measurement utilizing the acoustic wave sensor. The viscosity of the engine oil can additionally be obtained based on a measurement of phase and amplitude obtained from the data utilizing the acoustic wave sensor. The etch rate and the viscosity measurement provide data indicative of the quality of the engine oil.

Abstract: A viscosity and corrosivity sensor apparatus includes a substrate upon which one or more electrodes are configured. The electrode(s) are exposed to a liquid, such as automotive oil. An oscillator can be connected to the electrode, wherein the oscillator assists in providing data indicative of the corrosivity and data indicative of the viscosity of the liquid in contact with the electrode(s). A viscosity and corrosivity sensor is therefore provided in the same package.

Abstract: A viscosity and corrosivity sensor apparatus includes a substrate upon which one or more electrodes are configured. The electrode(s) are exposed to a liquid, such as automotive oil. An oscillator can be connected to the electrode, wherein the oscillator assists in providing data indicative of the corrosivity and data indicative of the viscosity of the liquid in contact with the electrode(s). A viscosity and corrosivity sensor is therefore provided in the same package.

Abstract: An oil quality sensor system comprise an acoustic wave viscosity and an etch rate sensor. The etch rate sensor system includes a piezoelectric substrate and one or more sensing layers configured upon the piezoelectric substrate. A layer of gold is generally configured above the sensing layer(s), such that the gold layer provides protection to the sensing layer(s), thereby extending the operating life of the resulting etch rate sensor system. The sensing layer(s) generally comprises one or more reactive electrodes. The etch rate sensor system can be adapted for use in a permanent oil quality sensor application.

Abstract: An acoustic wave acceleration sensor comprises an acoustic wave device including a plate that functions as a propagation medium and at least one interdigital transducer configured upon the plate. One or more antennas can be integrated with the acoustic wave device, wherein the antenna(s) communicates with interdigital transducers. Such antennas can receive wireless interrogation signals and transmit signals indicative of acceleration data.

Abstract: A passive acoustic wave sensor system for monitoring the quality of liquids, such as engine oil, is disclosed. The sensor system has an acoustic wave sensing device for generating a propagating acoustic wave and for detecting changes in frequency or other propagation characteristics of the acoustic wave caused by acousto-electric interactions between the liquid and the wave at an interactive region of the device. An antenna is integrated in the sensing device for receiving an interrogation signal and for transmitting the output response of the sensing device. The output response can be analyzed to determine the conductivity, pH or other electrical characteristics of the liquid. One or more reference devices may be utilized to compensate for mechanical effects of the liquid and temperature or other environmental effects. The sensing and reference devices can be configured as SH-SAW, SH-APM, FPM devices or other acoustic wave devices.

Abstract: An acoustic wave sensor system for monitoring the etch rate or etchability of a selective material has an acoustic wave sensing device having a piezoelectric substrate and at least one electrode coupled to the substrate for generating a propagating acoustic wave and for detecting changes in frequency or other propagation characteristics of the acoustic wave. A selective material is disposed on the substrate. Changes in propagation characteristics of the wave caused by etching of the selective material by an etchant can be analyzed to evaluate the etching rate or etchability of the selective material. The sensing system can have a wireless sensing device which device is mountable in an oil filter system for monitoring the corrosion of the engine. The sensing device can be configured as BAW, SH-SAW, SH-APM, FPM devices or other acoustic wave devices.