Disclosed are an apparatus and a method for quickly and accurately inspecting a droplet on a substrate. An apparatus for inspecting a droplet on a substrate according to an exemplary embodiment of the present disclosure includes: an ultrasonic sensor configured to apply an ultrasonic wave to a droplet on the substrate and detect an ultrasonic wave reflected from the substrate; and a processor configured to acquire a height of the droplet at each position on the substrate on the basis of a signal of the ultrasonic wave reflected from the droplet on the substrate, calculate a volume of the droplet on the basis of the heights of the droplet at the positions, and store or output data in relation to the volume of the droplet. The embodiment of the present disclosure may calculate the volume of the droplet using the ultrasonic wave, thereby quickly and accurately inspecting the droplet on the substrate.

An open channel flow monitoring apparatus for measuring a fluid level is disclosed having a first sensor configured to obtain data indicative of a fluid level below a first threshold level, a second sensor configured to obtain data indicative of fluid level above a second threshold level, which is lower than the first threshold level, and both the first sensor and the second sensor are configured to obtain data indicative of the fluid level when the fluid level is between the first threshold level and the second threshold.

An open channel flow monitoring apparatus for measuring a fluid level is disclosed having a first sensor configured to obtain data indicative of a fluid level below a first threshold level, a second sensor configured to obtain data indicative of fluid level above a second threshold level, which is lower than the first threshold level, and both the first sensor and the second sensor are configured to obtain data indicative of the fluid level when the fluid level is between the first threshold level and the second threshold.

A method and system having a water-flush toilet having a toilet bowl that is in fluid communication with a water source and is mounted with a sensor. The sensor includes a transmitter to transmit an ultrasonic signal and a receiver to receive an ultrasonic signal. The sensor may measure a Time of Flight (ToF) of the signal to obtain a ToF measurement. A microcontroller is electrically connected to the sensor and may receive and process the ToF measurement using an algorithm to determine a bowl status. The toilet also includes at least one water valve that is disposed between the bowl and the water source, and that is electrically connected to the microcontroller for instructing the at least one water valve to move from a first position to a second position for a duration of time, wherein the duration of time corresponds to the bowl status.

An apparatus having a layer of fats, oils and grease (F.O.G) on water includes a tank having an inlet and an outlet. The inlet connects to a source of F.O.G.-laden effluent and the outlet connects to a sewer pipe so that the outlet defines a normal static water level for F.O.G. and effluent in the tank. A sensor mounted above the static water level determines a distance from the sensor to a top of F.O.G. within the tank, so that a thickness of the F.O.G. in the tank can be determined. If the sensor is LIDAR, sensing may be at about 940 nm. When the F.O.G. is sensed to be above a threshold, the apparatus generates signals to remove the F.O.G. Ultrasonic sensing may be used. Preferably, the sensor is mounted far enough above the static water level so the distance between the sensor and the liquid surface is filled with air. More preferably, the sensor is far enough above the static water level so that the top of the F.O.G. does not touch the sensor even as the top of the F.O.G. rises above the static water level.

An apparatus having a layer of fats, oils and grease (F.O.G) on water includes a tank having an inlet and an outlet. The inlet connects to a source of F.O.G.-laden effluent and the outlet connects to a sewer pipe so that the outlet defines a normal static water level for F.O.G. and effluent in the tank. A sensor mounted above the static water level determines a distance from the sensor to a top of F.O.G. within the tank, so that a thickness of the F.O.G. in the tank can be determined. If the sensor is LIDAR, sensing may be at about 940 nm. When the F.O.G. is sensed to be above a threshold, the apparatus generates signals to remove the F.O.G. Ultrasonic sensing may be used. Preferably, the sensor is mounted far enough above the static water level so the distance between the sensor and the liquid surface is filled with air. More preferably, the sensor is far enough above the static water level so that the top of the F.O.G. does not touch the sensor even as the top of the F.O.G. rises above the static water level.

A sonic monitor system for a tank is disclosed in which the system comprises a remote tank sensor device for installation in a bung opening of a storage tank for determining a level of fluid within the storage tank and for generating a signal indicative of the level of fluid within the storage tank, and a receiver device for receiving the signal indicative of the level of fluid within the storage tank, the receiver device having a display and a siren with the receiver device actuating the siren when the receiver device determines that the level of fluid within the tank is at a predetermined level.

A sonic monitor system for a tank is disclosed in which the system comprises a remote tank sensor device for installation in a bung opening of a storage tank for determining a level of fluid within the storage tank and for generating a signal indicative of the level of fluid within the storage tank, and a receiver device for receiving the signal indicative of the level of fluid within the storage tank, the receiver device having a display and a siren with the receiver device actuating the siren when the receiver device determines that the level of fluid within the tank is at a predetermined level.

In a sonar-based transducer system, single or multiple transducers may collect and transmit data to a management module for analysis to optimize and/or control a process. Secondary sensors may provide additional product data for analysis. Historical data may be stored in a data library for future reference. Real time data may be transmitted to a control center via a virtual dashboard.

A fluidic device 10 includes: a channel 20 that extends along an X axis and through which a fluid S flows; a standing wave generation part 30 that generates a standing wave SW transmitting along a Y axis in the fluid S in the channel 20; a transmission and reception part 40 that transmits an ultrasonic wave to the fluid S in the channel 20 and receives the ultrasonic wave transmitted through the fluid S; a time-of-flight measurement unit 55 that measures a time of flight that is a period of time from when the transmission and reception part 40 transmits the ultrasonic wave to when the transmission and reception part 40 receives the ultrasonic wave; and a drive control unit 582 that controls driving of the standing wave generation part 30 based on the time of flight of the ultrasonic wave.