Abstract: A method includes projecting light to obtain a reference measurement using a first photoresistor; collecting dust on a platform during a collection time interval; and projecting light across the platform to obtain a dust measurement using the first photoresistor or a second photoresistor.

Abstract: A first medical device for obstructive sleep apnea therapy includes therapy delivery circuitry coupled to a first set of electrodes implantable proximate to a first hypoglossal nerve within a tongue of the patient and configured to deliver a first electrical stimulation signal to the first hypoglossal nerve that causes the tongue of the patient to advance and includes information to communicate to a second medical device implantable within the head or neck of the patient and coupled to a second set of electrodes implantable proximate to a second hypoglossal nerve within the tongue of the patient; and sensing circuitry coupled to the first set of electrodes and configured to receive a second electrical stimulation signal, delivered to the second hypoglossal nerve by the second medical device, that includes information that the second medical device communicates to the first medical device.

Abstract: An system includes a fabric filter, an air supply system, a pulsing valve that is coupled to the air supply system and is configured to generate a statistical pulse of air that is directed to the fabric filter, an air flow monitor that is configured to monitor a flow of air associated with the statistical pulse of air, and a valve controller that is coupled to the air flow monitor that is configured to generate a performance signature for the pulsing valve based on the flow of air that was monitored.

Abstract: A baghouse filter system includes a fabric filter; a control system coupled to the bag house filter system that is configured to control filtering operations of the baghouse filter system and cleaning operations of the baghouse filter system; a plurality of data collection devices that are configured to collect data associated with a plurality of operational and cleaning parameters of the baghouse filter system; and a diagnostic system that is configured to receive the data associated with the plurality of operational and cleaning parameters of the baghouse filter system independent of the control system, to determine whether a performance of the baghouse filter system is degraded based on the data associated with the plurality of operational and cleaning parameters, and to perform a plurality of targeted diagnostic analyses of the data associated with the plurality of operational and cleaning parameters, the plurality of targeted diagnostic analyses corresponding to a plurality of performance metrics of the

Abstract: An system includes a fabric filter, an air supply system, a pulsing valve that is coupled to the air supply system and is configured to generate a statistical pulse of air that is directed to the fabric filter, an air flow monitor that is configured to monitor a flow of air associated with the statistical pulse of air, and a valve controller that is coupled to the air flow monitor that is configured to generate a performance signature for the pulsing valve based on the flow of air that was monitored.

Abstract: Embodiments of the present invention provide methods, systems, and computer program products for communicating with a controller in real-time by storing a command for the controller in a database. The command may be a command to write a value of a real-time process control variable to the controller or a command to read a value of a real-time process control variable from the controller. Upon detecting the stored command in the database, the stored command is retrieved from the database and sent to the controller.