A network connection is established with a server. A broadcasted advertising packet of a wireless communication protocol is received from a remote device. The remote device repeatedly broadcasts content of the advertising packet based at least in part a total number of remote devices specified to broadcast to the system. Payload content from the advertising packet is extracted. At least a portion of the extracted payload content is sent via the network connection to the server.

The invention is a fill-level measuring device having the following features: a housing, a membrane, a first drive unit have a first bolt, the bolt being coupled to the membrane, a second drive unit having a second bolt, the second bolt being operatively connected to the membrane and being connected to the housing at an end of the second bolt facing the membrane by means of an intermediate bottom, and the first drive unit and the second drive unit are mechanically connected to each other in series.

A filling level transmitter for measuring a filing level of a liquid includes: a filling level sensor having: an ultrasonic transceiver configured to emit ultrasound, and sensor electronics; a sound-conducting tube having two reflectors spaced apart from one another, the first reflector being configured to deflect ultrasound emitted by the transceiver in the direction of the second reflector, and the second reflector being configured to deflect the emitted ultrasound in the direction of the surface of the liquid. A third reflector is arranged in the second reflector such that emitted ultrasound impacting the third reflector is reflected in the direction of the first reflector.

A first arithmetic circuit computes a propagation velocity of an ultrasonic wave based on a first time difference between an output timing, at which an ultrasonic element outputs an ultrasonic wave, and a reference timing, at which a comparator circuit outputs a detection signal on reflection off a distal end of a reference pipe, and a length of the reference pipe. A period circuit sets a propagation path detection period to detect a liquid level timing, at which the comparator circuit outputs the detection signal on reflection off the liquid level, based on a longest and shortest propagation path lengths and the propagation velocity. A second arithmetic circuit computes the length of the propagation path based on a second time difference, which is between the liquid level timing and the output timing during the propagation path detection period, and the propagation velocity.

A first arithmetic circuit computes a propagation velocity of an ultrasonic wave based on a first time difference between an output timing, at which an ultrasonic element outputs an ultrasonic wave, and a reference timing, at which a comparator circuit outputs a detection signal on reflection off a distal end of a reference pipe, and a length of the reference pipe. A period circuit sets a propagation path detection period to detect a liquid level timing, at which the comparator circuit outputs the detection signal on reflection off the liquid level, based on a longest and shortest propagation path lengths and the propagation velocity. A second arithmetic circuit computes the length of the propagation path based on a second time difference, which is between the liquid level timing and the output timing during the propagation path detection period, and the propagation velocity.

Methods and apparatus for non-invasive determination of one or more physical properties of a material in a conduit are presented. In one example, the method comprises initiating a vibration on a wall of the conduit at a first location, capturing a response to the vibration at the first location, capturing a response to the vibration at a second location, and determining at least one physical property of the material based on at least one of the captured responses at the first location and the second location.

A distance measuring device includes a measuring member holding a length measuring instrument and at least one rail member (base member) on which the measuring member is movably disposed. When a straight line parallel to a direction in which the measuring member disposed on the base member moves is defined as a reference line, an angle formed by a straight line parallel to an axial length direction of a reaction tube and the reference line, which are on an identical plane, is constant for the plurality of reaction tubes disposed side by side along the reference line. A measurement direction of the length measuring instrument is parallel to the axial length direction of the reaction tube in a state where the measuring member is disposed on the base member. The measuring member is disposed on the base member to be able to sequentially move.

The invention discloses methods for simultaneously measuring various properties of a fluid using a waveguide. The method includes transmitting a plurality of wave modes into the fluid using an ultrasonic shear wave transducer from one end of a waveguide. Further, the wave modes are reflected from the other end of the waveguide. The reflected wave modes are processed simultaneously. The time of flight and the amplitude of the received wave modes are determined. Further, one or more properties of the fluid are measured using determined time of flight and amplitude of the received wave modes. The disclosed method is used to accurately measure the properties of fluid such as level, density, viscosity or flow rate in a short period of time.

A sensor device for monitoring a container includes a first sensor that detects signals indicative of a level to which the container is filled with contents, a second sensor that detects movement of the container, and a processing unit coupled to the first sensor and the second sensor. The processing unit has a first interface to communicate with the first sensor, and a second interface to communicate with the second sensor. The sensor device monitors the level and the movement of the container and transitions to an idle state where the first sensor and other components of the sensor device are powered down in response to an instruction from an external source, a determination of passage of an amount of time without any activity, and/or determination of a predefined time. The second sensor is used to detect movement associated with an emptying event where contents are removed from the container.

A plunger head to measure fluid in a drug cartridge includes a transducer coupled to emit ultrasonic signals, and a power source. A controller is coupled to the transducer and the power source, and the controller includes logic that when executed by the controller causes the plunger head to perform operations. For example the plunger head may emit the ultrasonic signals along a length of the drug cartridge, when the plunger head is disposed in the drug cartridge, and receive the ultrasonic signals after the ultrasonic signals are reflected from a dispensing end of the drug cartridge. The plunger head may then determine when the ultrasonic signals received by the transducer have an absolute value of amplitude greater than a first threshold value, and associate a timestamp with the ultrasonic signals received that have the absolute value of amplitude greater than the first threshold value.