Denver, CO, United States
Denver, CO, United States

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Auto-location systems and methods of tire pressure monitoring sensor units arranged with a wheel of a vehicle detect a predetermined time (T1) when a wheel phase angle reaches angle of interest using a rim mounted or a tire mounted sensor. The systems and methods transmit a radio frequency message associated with a wheel phase angle indication. The wheel phase angle indication triggers wheel phase and/or speed data such as ABS data at the predetermined time (T1) to be stored. A correlation algorithm is executed to identify the specific location of a wheel based on the wheel phase and/or speed data at the predetermined time (T1). TPM sensor parameters from a tire pressure monitoring sensor unit are assigned to the specific location of the wheel based on a confidence interval width analysis of the ABS data at the predetermined (T1). The confidence interval width analysis identifies the specific location of the wheel whose ABS sensor shows a lowest confidence interval width as a result of a normal distribution pattern or similar pattern. The confidence interval width analysis may calculate a weighted cumulative confidence interval width for the ABS data which experience rollback events.


A method for determining change of direction of a vehicle includes steps of maintaining a rolling window of ABS data indicative of ABS tooth count and capturing a relevant rolling window of ABS data at the predetermined one-measurement point; storing the rolling window of the ABS data indicative of ABS tooth in a buffer; monitoring the ABS data and detecting a valid stop event which causes the rate of change of ABS tooth count to substantially decrement to zero; and monitoring the ABS data and detecting a valid move event which causes the rate of change of ABS tooth count to substantially increment from zero. The method also includes steps of determining a pre-stop phase relationship between at least two wheels based on the ABS tooth count stored in the buffer immediately prior to the valid stop event; determining a post-start phase relationship between at least two wheels based on the ABS tooth count stored in the buffer immediately subsequent to the valid move event; and correlating the pre-stop phase relationship and the post-start phase relationship to determine change of direction and confidence level.


An automotive urea solution monitoring device is deployed in conjunction with the urea tank of a selective catalytic reduction vehicle. An RF signal of a constant frequency may be generated across a resonant circuit, which may be comprised of an inductor and a PCB trace capacitor, or the like. Electromagnetic radiation is propagated into the automotive urea solution in the urea tank. The conductivity and dielectric properties of the liquid change the impedance of the discrete/trace capacitor and or the discrete/trace inductor. These changes are proportional to ammonia content, temperature, and/or level of the automotive urea solution in the urea tank and are preferably detected by a microcontroller, or the like, and then transmitted to a selective catalytic reduction vehicle engine management system, or the like.


Patent
Schrader | Date: 2014-04-15

Methods, systems, and devices are provided for tire pressure detectors that may operate according to one of two or more selectable frequencies. Tire pressure detectors may include an RF section to modulate pressure information from a pressure sensor onto an output signal. The frequency of the output signal may be selectable from two or more frequencies based on a frequency required by a vehicle that the tire pressure detector is to be used with. An RF matching circuit may be coupled between the RF section and an antenna, with an impedance of the RF matching circuit selected based of the frequency of the output signal. Such impedance matching may provide a constant power level output from the tire pressure detector independent of the frequency of the tire pressure detector transmissions.


Grant
Agency: European Commission | Branch: FP7 | Program: BSG-SME-AG | Phase: SME-2011-2 | Award Amount: 2.64M | Year: 2012

O4S (=Organic for Surfactants) has been primarily designed to address a critical necessity of the European Natural Cosmetic Sector which is lacking a sustainable source of surfactants (Surface Active Agents) that can be considered natural and are of certified organic origin to meet the growing market demands. This development will provide the natural cosmetic sector with an alternative to replace the current use of chemically-derived surfactants from oleo-chemical feedstocks. One of their main applications is in personal hygiene products representing 40% in volume of the cosmetic ingredients used in the EU. This work will optimize the production of natural bio-surfactants by fermentation to achieve industrial efficiency and economic yields by using organically certified sources (e.g. post harvest loses by-products from primary process). The proposed work offers an opportunity to achieve the full utilization of organically certified raw materials increasing the efficiency of the European Organic Farming Systems. Scientific objectives are: 1) To investigate supply of raw materials from waste streams or by-products to lowers the initial costs; 2) To develop scientific knowledge on the interdependencies of the various process parameters and substrate properties ; 3.)To establish of a database of compound characteristics, stability and performance for suitable applications. Further, the overall technical objectives are to define the characteristics of the product to meet the organic certification standards and the performance requirements for their application in the natural cosmetic industry. This will be followed by the specification, optimization and scale-up of an appropriate industrial bio-process for bio-surfactant production (up to 1 m3 to 10 m3) by developing an integrated fermenting and in-situ removal system. Further, a technology platform for product information, formulation and applications will be created for the benefit of the SME-AG members.


A tyre monitor for mounting on a wheel rim, the tyre monitor comprising a housing having a first part (644A) configured to receive a component substrate (645) and a second part (644B) configured to receive one or more other components of the tyre monitor, for example a battery. The first and second parts of the housing are non-coplanar and non-parallel with one another. When the tyre monitor is mounted on the wheel rim, the substrate is non-coplanar and non-parallel with a plane (T) that is tangential to the wheel rim at the location where the tyre monitor is mounted on the rim and preferably the substrate plane is substantially radial with respect to the wheel rim.


Patent
Schrader | Date: 2013-02-13

A tire monitoring system mounted on a vehicle comprising at least one sensor mounted in one of the tires in order to measure at least the temperature and the pressure of the tire, transmit the data measured to a central unit mounted on board the vehicle, with the central unit storing the data acquired at various instants. It further comprises a USB port, and the central unit is programmed to, when a removable memory device is connected to the USB port, transfer at least a portion of the data stored in the central unit to the memory device.


Auto-location systems and methods of tire pressure monitoring sensor units arranged with a wheel of a vehicle detect a predetermined time (T1) when a wheel phase angle reaches angle of interest using a rim mounted or a tire mounted sensor. The systems and methods transmit a radio frequency message associated with a wheel phase angle indication. The wheel phase angle indication triggers wheel phase and/or speed data such as ABS data at the predetermined time (T1) to be stored. A correlation algorithm is executed to identify the specific location of a wheel based on the wheel phase and/or speed data at the predetermined time (T1). TPM sensor parameters from a tire pressure monitoring sensor unit are assigned to the specific location of the wheel.


Patent
Schrader | Date: 2014-01-30

A tyre monitoring apparatus comprising a monitor installed on a tyre and a pulse width measuring apparatus for measuring the width of pulses produced by the monitor. The pulse width measuring apparatus comprises a frequency analyzer for producing a frequency representation of the pulse, a signal processor for determining a minimum value of the frequency representation, and a pulse width estimator that inverts the minimum value to produce a measurement for the pulse width. The tyre monitoring apparatus uses the pulse width measurement as an indication of characteristics of the tyre.


An inflation device for a wheel with a pneumatic tire. A valve having a seat carried by a body and a head separates a chamber from an output connector. The head is movable within the chamber between a closed position wherein it is in abutment on the seat and an open position wherein it is separated from the seat so as to put the radial openings into communication with the output connector. The head is elastically held in the closed position against the seat so as to allow lifting of the head when the pressure in the output connector is greater than a predetermined threshold.

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