The present invention provides a pressure detection circuit including an oscillator unit, configured to output an oscillation signal as a count clock signal of a counter unit; and the counter unit, connected to the oscillator unit and configured to acquire a frequency of the oscillation signal and count. The pressure detection circuit further includes a comparator unit, connected to the counter unit, and configured to detect a voltage variation obtained by a pressure conversion, and send a signal to control the counter unit to count or stop counting; a voltage converter unit, connected to one input terminal of the comparator unit, and configured to supply a fixed or variable comparable voltage to the comparator unit; a constant current source charging unit, connected to the other input terminal of the comparator unit, and configured to supply a linearly and gradually increased comparison voltage to the comparator unit; a charge/discharge control unit, connected to the constant current source charging unit, and configured to control the constant current source charging unit to charge or discharge, such that the comparable voltage output by the voltage converter unit is compared to cause an output terminal of the comparator unit to enable counting of the counter unit; wherein the oscillator unit or the voltage converter unit further includes a pressure acquiring unit, as a component of the voltage converter unit or the oscillator unit, configured to convert a pressure into a variation of the comparable voltage or the frequency of the oscillation signal. The invention also provides a pressure input device pressure detection device. The invention has the technical effects of high sensitivity and resolution, power saving, and wide applicability.

A Internet of Things (IoT) tag for measuring transmitted force applied on the IoT tag, including a substrate, a force sensor integrated on the substrate, and a sensing circuit integrated on the substrate and configured to output a digital word measurement in response to an applied force on the force sensor.

A protective garment contains a projectile detection device, in addition to impact and breach resistant materials for protecting the wearer. An arrangement of force sensitive regions defines a grid arrangement responsive to an incoming projectile. The force sensitive regions include pressure sensitive or piezoelectric characteristics such that an impact varies the electrical response of each region. A detection circuit connects to each region for sampling. A sampling of the regions computes a high velocity impact by a sudden change in the sensed electrical characteristics, such as a sudden drop in resistance between two planer sheets. The grid arrangement identifies the impact placement on the garment, and can be mapped to anatomical regions to evaluate a severity. Placement and impact force, along with GPS coordinates of the wearer, are transmitted by the detection circuit and/or in conjunction with an app on a mobile device of the wearer for alerting first responders.

The present invention provides a pressure detection circuit including an oscillator unit, configured to output an oscillation signal as a count clock signal of a counter unit; and the counter unit, connected to the oscillator unit and configured to acquire a frequency of the oscillation signal and count. The pressure detection circuit further includes a comparator unit, connected to the counter unit, and configured to detect a voltage variation obtained by a pressure conversion, and send a signal to control the counter unit to count or stop counting; a voltage converter unit, connected to one input terminal of the comparator unit, and configured to supply a fixed or variable comparable voltage to the comparator unit; a constant current source charging unit, connected to the other input terminal of the comparator unit, and configured to supply a linearly and gradually increased comparison voltage to the comparator unit; a charge/discharge control unit, connected to the constant current source charging unit, and configured to control the constant current source charging unit to charge or discharge, such that the comparable voltage output by the voltage converter unit is compared to cause an output terminal of the comparator unit to enable counting of the counter unit; wherein the oscillator unit or the voltage converter unit further includes a pressure acquiring unit, as a component of the voltage converter unit or the oscillator unit, configured to convert a pressure into a variation of the comparable voltage or the frequency of the oscillation signal. The invention also provides a pressure input device pressure detection device. The invention has the technical effects of high sensitivity and resolution, power saving, and wide applicability.

A load-sensor-based system utilizing a digital serial synchronous interface (SSI). One example system includes an A/D converter configured to be coupled to a load sensor and to receive signals indicating a load on the load sensor. A first controller is coupled to the A/D converter and to the SSI and is configured to receive, via the A/D converter, a first signal at a first sampling rate. The first controller is also configured to receive, via the A/D converter, a second signal at the first sampling rate, and receive, via the SSI, a request for a load value at a first period of time. The first controller is configured to determine the load value at the first period of time based on the first and second signals, and send, via the SSI, the load value at the first period of time to the load controller.

A force torque sensor device includes a sensor chip that detects a displacement in a predetermined axis direction, a strain body that transmits an applied force to the sensor chip, and an adhesive that bonds the sensor chip to the strain body. The Young's modulus of the adhesive is greater than or equal to 130 MPa and less than or equal to 1.5 GPa.

Measurement apparatus, for generating a first output signal indicative of a measurand, comprises: a first oscillator circuit and a second oscillator circuit, each oscillator circuit being arranged to generate a respective oscillating output signal and comprising at least a respective first component having a property determining a respective output frequency of the respective oscillating output signal; a sensor for sensing said measurand, the sensor comprising said first component of the first oscillator circuit, said property of said first component of the first oscillator circuit being dependent upon said measurand; and circuitry arranged to receive said oscillating output signals and generate said first output signal, said first output signal being indicative of a number of cycles of one of the first and second oscillating output signals in a time period determined by a period of the other of said first and second oscillating output signals.

Force sensing may be integrated with a laryngoscope and information conveyed to the user when an applied force in a patient's mouth may cause dental trauma. By warning the user, the user may be interrupted before dental trauma occurs, allowing the user to adjust the procedure.

A Internet of Things (loT) tag for measuring transmitted force applied on the loT tag, including a substrate, a force sensor integrated on the substrate, and a sensing circuit integrated on the substrate and configured to output a digital word measurement in response to an applied force on the force sensor.

Methods and apparatus are described that employ machine learning techniques to model nonlinear properties of materials employed in sensor devices and systems to improve the operation of such devices and systems.