Techniques for force sensing in additive fabrication are provided. According to some aspects, an additive fabrication device may include a force sensor configured to measure a force applied to a build platform during fabrication. A length of time taken for a layer of material to separate from a surface other than the build platform to which it is adhered may be determined based on measurements from the force sensor. Subsequent additive fabrication operations, such as subsequent motion of the build platform, may be adapted based on the determined length of time.

Disclosed is a time-to-digital converter (TDC)-based device comprising a crossbar array for generating a current, a current-controlled delay line 104 for converting the current received from the crossbar array into a time pulse, and a TDC circuit 106 for measuring and converting the time pulse into digital output.

Disclosed is a time-to-digital converter (TDC)-based device comprising a crossbar array for generating a current, a current-controlled delay line 104 for converting the current received from the crossbar array into a time pulse, and a TDC circuit 106 for measuring and converting the time pulse into digital output.

A plumbing fixture assembly including a fluid flow detection system for monitoring fluid flow and flow characteristics through plumbing fixtures without contacting the fluid. The fluid flow detection system communicates collected data related to the plumbing fixtures to a water management system, which analyzes the data and provides information to a user through a portal and user interface. The fluid flow detection system also tracks users of the plumbing fixtures for compliance with a hand washing routine. The hand washing compliance data is communicated to the water management system as well.

A plumbing fixture assembly including a fluid flow detection system for monitoring fluid flow and flow characteristics through plumbing fixtures without contacting the fluid. The fluid flow detection system communicates collected data related to the plumbing fixtures to a water management system, which analyzes the data and provides information to a user through a portal and user interface. The fluid flow detection system also tracks users of the plumbing fixtures for compliance with a hand washing routine. The hand washing compliance data is communicated to the water management system as well.

The present disclosure relates to a converter (1) converting a voltage (Vin) into time. The converter comprises a direct path (100) including a first injection-locked oscillator (104) and a first circuit (106). The first circuit is configured for receiving an output signal (?sens) of the first oscillator and a reference signal (?0), and for providing at least a first pulse signal (out) determined by a phase shift between the output signal (?sens) of the first oscillator and the reference signal (?0). The converter further comprises a feedback loop (102) comprising a second circuit (108) configured for integrating said at least one first pulse signal (out).

The present disclosure relates to a converter (1) converting a voltage (Vin) into time. The converter comprises a direct path (100) including a first injection-locked oscillator (104) and a first circuit (106). The first circuit is configured for receiving an output signal (?sens) of the first oscillator and a reference signal (?0), and for providing at least a first pulse signal (out) determined by a phase shift between the output signal (?sens) of the first oscillator and the reference signal (?0). The converter further comprises a feedback loop (102) comprising a second circuit (108) configured for integrating said at least one first pulse signal (out).

A timer module including a timer and a compensation circuit coupled to the timer is provided. The timer measures time over a first monitoring period. The timer includes a floating-gate and an energy barrier. The floating-gate stores electrons and has an initial state and a measured state. The measured state includes a current time and a current floating-gate voltage. The energy barrier is positioned adjacent the floating-gate and leaks electrons from an ambient environment of the timer to the floating-gate at a predetermined leakage rate using Fowler-Nordheim (FN) tunneling. The compensation circuit selectably adjusts the first monitoring period to facilitate improved robustness of the timer with respect to fabrication mismatch due to the self-compensating dynamics of FN tunneling.

A timer module including a timer and a compensation circuit coupled to the timer is provided. The timer measures time over a first monitoring period. The timer includes a floating-gate and an energy barrier. The floating-gate stores electrons and has an initial state and a measured state. The measured state includes a current time and a current floating-gate voltage. The energy barrier is positioned adjacent the floating-gate and leaks electrons from an ambient environment of the timer to the floating-gate at a predetermined leakage rate using Fowler-Nordheim (FN) tunneling. The compensation circuit selectably adjusts the first monitoring period to facilitate improved robustness of the timer with respect to fabrication mismatch due to the self-compensating dynamics of FN tunneling.

A magnetic levitation device for levitating a marker or suspending the marker away from the device having a housing having an outer portion and a lower portion. The device has an electromagnetic configuration positioned on disc and the disc can move or rotate the marker at a constant or variable speed. The rotating disc is configured with the electromagnetic configuration and a gear assembly.