Stoneridge Control Devices, Inc.

Stoneridge, Inc.

Standard Motor Products, Inc.

Kayvan Hedayat

Norman Poirier

Eric Matson

John Hart

Mark Wilson

Gerald Tromblee

Susan M Barnabo

Gennady Baskin

Mark Freeman

A soot sensing system includes a soot sensor having a first element, and circuitry to an amount of soot accumulated on the element and to control heating of the element in response to the soot accumulation. An electrostatic repelling voltage (ERV) may be applied to a sensor/heater element(s) during a contamination prevention mode (CPM) to repel ash and reduce contamination of the sensor. A pulsed heating voltage (PHV) may be applied to the elements during the CPM and a pulsed ERV may be applied to the elements during the 'off' period of the PHV. All voltage to the elements may be turned off during the CPM and the elements may be floating/ground. A PHV may be applied to the elements during the CPM and no voltage may be applied to the elements during the “off” period of the PHV. A heating voltage may be applied to the elements during a CPM corresponding to a cold start.

Soot sensor system

A soot sensing system includes a soot sensor having a first element, and circuitry to an amount of soot accumulated on the element and to control heating of the element in response to the soot accumulation. An electrostatic repelling voltage (ERV) may be applied to a sensor/heater element(s) during a contamination prevention mode (CPM) to repel ash and reduce contamination of the sensor. A pulsed heating voltage (PHV) may be applied to the elements during the CPM and a pulsed ERV may be applied to the elements during the 'off' period of the PHV. All voltage to the elements may be turned off during the CPM and the elements may be floating/ground. A PHV may be applied to the elements during the CPM and no voltage may be applied to the elements during the 'off' period of the PHV. A heating voltage may be applied to the elements during a CPM corresponding to a cold start.

A soot sensor system and a method of sensing soot in a vehicle soot sensor system. The soot sensor system and method includes providing a soot sensor having at least one trace of conductive material in a continuous loop on a surface of a substrate, applying an alternating current (AC) input voltage to the at least one trace of conductive material to establish an AC sense current through the at least one trace of conductive material, and generating, using a peak detector, a peak detector output voltage representative of a peak value of the AC sense current and of an amount of soot accumulated on the soot sensor.

A soot sensor includes a soot sensor including a first element on a first surface of the soot sensor. A soot sensing system may include a soot sensor and circuitry electrically coupled to the first element of the soot sensor. The circuitry is configured to determine an amount of soot accumulated on the first element and to control heating of the first element in response to the soot accumulation.

A thermocouple including first and second thermoelements arranged to define a hot junction and a cold junction. A thermometer is coupled to at least one of the first and second thermoelements to measure the temperature of said cold junction independent of electronics used for conditioning a signal of said thermocouple. The thermoelements may be thick film elements coupled to a substrate. The thermometer may also be coupled to the substrate.

Thermocouple with local cold junction measurement

A soot sensor includes a soot sensor including a sensor element and heater element disposed on a first surface of the soot sensor. A soot sensing system may include a soot sensor and circuitry electrically coupled to the sensor and heater elements of the soot sensor. The circuitry is configured to determine an amount of soot accumulated on the soot sensor and to control heating of the heater element in response to the soot accumulation.

A sensor includes a shaft and a magnetic sensor and an anti-aging magnetic sensor. The shaft may have at least one magnetized active region. The magnetic sensor may be configured to sense a magnetic field about the shaft, and may provide an output representative of torque applied to the shaft, shaft rotational speed and/or shaft rotational position. The anti-aging magnetic sensor may be positioned adjacent the active region to provide a reference signal output that is substantially independent of torque applied to said shaft.

Sensor system including a magnetized shaft

A sensor includes a shaft and a magnetic sensor. The shaft may have at least one magnetized active region. The magnetic sensor may be configured to sense a magnetic field about the shaft, and may provide an output representative of torque applied to the shaft, shaft rotational speed and/or shaft rotational position.

A system and method for non-contact engine parameter sensing. A magnetized engine component establishes a magnetic field that varies in response to stress imparted within the engine. A magnetic field sensing element spaced from the magnetized engine component is configured to provide an output indicative of a state of combustion in response to the magnetic field.

Non-contact engine parameter sensor

A sensor includes a shaft and a magnetic sensor. The shaft may have at least one magnetized active region. The magnetic sensor may be configured to sense a magnetic field about the shaft, and may provide an output representative of torque applied to the shaft, shaft rotational speed and shaft rotational position.

A position sensor including a sensor assembly adapted to mount to a first rail of an automotive seat rail assembly. The sensor assembly includes a Hall device and a magnet. The assembly is mountable to the first rail to cause a first output of the Hall device when the first rail is in a first position relative to a second rail of the automotive seat rail assembly, and to cause a second output of the Hall device when the first rail is in a second position relative to the second rail.

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Weston, MA, United States of America

Kayvan Hedayat