The disclosed technology relates to a field serviceable pressure scanner suitable for high-pressure sensing applications and replacement of large pressure transmitter panels. The pressure scanner includes a housing having a mounting plate comprising a plurality of through-hole bores extending from a front to back side for mating with corresponding transducer ports of the pressure sensors, and a plurality of input ports disposed on the front side of the mounting plate and in communication with the corresponding plurality of through-hole bores. The pressure scanner assembly includes two or more field-replaceable (swappable) pressure sensors seal mounted to the back side of the mounting plate, each pressure sensor comprising one or more sensor ports, each of the one or more sensor port in communication with corresponding through-hole bores in the mounting plate, and a multi-channel data acquisition system configured to receive pressure signals from the two or more field-replaceable pressure sensors.

An oil pressure estimation device for calculating an estimated differential pressure that is an estimated value of a differential pressure between two oil chambers generated in a torque converter including the two oil chambers and a lockup clutch includes a storage device and an execution device. The storage device stores mapping data defining a mapping, the mapping outputting as an output variable an estimated differential pressure variable indicating the estimated differential pressure, in response to input of an input variable, and the mapping having been trained by machine learning. The mapping includes an instruction differential pressure variable indicating the instruction differential pressure as one of a plurality of the input variables. The execution device executes an acquisition process of acquiring a value of the input variable and a calculation process of inputting the value of the input variable into the mapping to calculate a value of the output variable.

An oil pressure estimation device for calculating an estimated differential pressure that is an estimated value of a differential pressure between two oil chambers generated in a torque converter including the two oil chambers and a lockup clutch includes a storage device and an execution device. The storage device stores mapping data defining a mapping, the mapping outputting as an output variable an estimated differential pressure variable indicating the estimated differential pressure, in response to input of an input variable, and the mapping having been trained by machine learning. The mapping includes an instruction differential pressure variable indicating the instruction differential pressure as one of a plurality of the input variables. The execution device executes an acquisition process of acquiring a value of the input variable and a calculation process of inputting the value of the input variable into the mapping to calculate a value of the output variable.

An ultraviolet air sanitizer apparatus for HVAC systems has a frame defining a flow passage therethrough configured such that the frame rear is insertable into a return air inlet of the HVAC system. A sanitizer light is disposed within the flow passage. When activated, the sanitizer light emits germicidal ultraviolet light into the surrounding flow passage. A light baffle is disposed within the flow passage upstream of the sanitizer light and allows air flow but blocks light. An air pressure sensing switch is electrically connected to the sanitizing light and configured to measure air pressure differential across an air filter. When the air pressure differential is a predetermined value or greater, which is indicative of air circulation by the HVAC system, the switch turns on the sanitizer light. When the pressure differential is less than the predetermined value, the switch turns off the sanitizer light.

An ultraviolet air sanitizer apparatus for HVAC systems has a frame defining a flow passage therethrough configured such that the frame rear is insertable into a return air inlet of the HVAC system. A sanitizer light is disposed within the flow passage. When activated, the sanitizer light emits germicidal ultraviolet light into the surrounding flow passage. A light baffle is disposed within the flow passage upstream of the sanitizer light and allows air flow but blocks light. An air pressure sensing switch is electrically connected to the sanitizing light and configured to measure air pressure differential across an air filter. When the air pressure differential is a predetermined value or greater, which is indicative of air circulation by the HVAC system, the switch turns on the sanitizer light. When the pressure differential is less than the predetermined value, the switch turns off the sanitizer light.

A method of monitoring microelectromechanical system (MEMS) pressure sensors arranged on a carrier includes: generating a first measurement value by a first MEMS pressure sensor arranged on the carrier; generating a second measurement value by a second MEMS pressure sensor arranged on the carrier; and determining, by an integrated circuit, whether the first measurement value of the first MEMS pressure sensor corresponds to the second measurement value of the second MEMS pressure sensor in accordance with a predefined criterion, wherein the integrated circuit is arranged on the carrier and is coupled to the first MEMS pressure sensor and the second MEMS pressure sensor.

A method of monitoring microelectromechanical system (MEMS) pressure sensors arranged on a carrier includes: generating a first measurement value by a first MEMS pressure sensor arranged on the carrier; generating a second measurement value by a second MEMS pressure sensor arranged on the carrier; and determining, by an integrated circuit, whether the first measurement value of the first MEMS pressure sensor corresponds to the second measurement value of the second MEMS pressure sensor in accordance with a predefined criterion, wherein the integrated circuit is arranged on the carrier and is coupled to the first MEMS pressure sensor and the second MEMS pressure sensor.

An aerosol delivery device is provided. The aerosol delivery device includes a power source, an aerosol production component, a sensor to produce measurements of atmospheric air pressure in an air flow path through at least one housing, and a switch coupled to and between the power source and the aerosol production component. The aerosol delivery device also includes processing circuitry that determines a difference between the measurements of atmospheric air pressure and a reference atmospheric air pressure. Only when the difference is at least a threshold difference, the processing circuitry outputs a signal to cause the switch to switchably connect and disconnect an output voltage from the power source to the aerosol production component to adjust power provided to the aerosol production component to a power target that is variable according to a predetermined relationship between the difference and the power target.

An aerosol delivery device is provided. The aerosol delivery device includes a power source, an aerosol production component, a sensor to produce measurements of atmospheric air pressure in an air flow path through at least one housing, and a switch coupled to and between the power source and the aerosol production component. The aerosol delivery device also includes processing circuitry that determines a difference between the measurements of atmospheric air pressure and a reference atmospheric air pressure. Only when the difference is at least a threshold difference, the processing circuitry outputs a signal to cause the switch to switchably connect and disconnect an output voltage from the power source to the aerosol production component to adjust power provided to the aerosol production component to a power target that is variable according to a predetermined relationship between the difference and the power target.

The invention relates to a method for determining a loading of a soot filter with soot particles from an exhaust gas mass flow of an internal combustion engine in a motor vehicle, a control device for an internal combustion engine having a soot filter, and a computer program product for carrying out the method. In the first step 100 of the method a characteristic curve for the relationship between the exhaust gas mass flow, exhaust gas temperature, ambient pressure, and pressure drop across the soot filter without loading is determined; in the second step 200 a second exhaust gas mass flow and a second pressure drop that occurs during loading of the soot filter are determined; in the third step 300, from the characteristic curve the first pressure drop is determined for which the first and second exhaust gas mass flows have the same value; in the fourth step 400 an estimated value for the loading of the soot filter is computed via a real-time parameter estimation, preferably by use of the gradient method, based on the previously determined parameters. The method allows a reliable determination of the instantaneous loading of a particulate filter, regardless of the type of measuring signals used in each case for characterizing the loading behavior of the soot filter.