A wireless power transmitting system includes a power amplifier comprising a plurality of measurement points and a power amplifier controller integrated circuit (IC). In some embodiments, the power amplifier controller IC performs synchronization of the various components of the power amplifier, conducts impedance and temperature measurements at the measurements points, determines if a foreign object is within the transmission range of the wireless power transmitter, and decides if a shutdown of the power amplifier is needed. In some embodiments, the power amplifier controller IC determines through a transmitter controller IC, the presence of a foreign object within the transmission range and adjusts the power transmission to one or more receivers.

An electrical device including a surface which may be exposed to heat derived from operation of the electrical device such that the temperature of the surface increases during operation. The surface includes a temperature sensor including first and second electrodes separated by a layer of control material. The material properties and/or configuration of the control material are selected such that the electrical conductivity of the control material increases with increasing temperature so that electrical current is able to pass between the first and second electrodes once the temperature of any part of the control material has reached or exceeded a predetermined temperature. The temperature sensor extends over substantially the whole of the surface. A system including the electrical device and a method of controlling the electrical device is also disclosed.

Various smart doorbell arrangements are presented. Based on a measured temperature of the smart doorbell, operation of the smart doorbell device may be altered such that more heat or less heat is generated without affecting user-facing features. Based on another measured temperature, operation of the smart doorbell may be altered such that a chime that is electrically coupled to the smart doorbell device is not sounded in response to a doorbell actuation, but that a notification of the doorbell actuation is wirelessly transmitted by the smart doorbell device.

Various smart doorbell arrangements are presented. Based on a measured temperature of the smart doorbell, operation of the smart doorbell device may be altered such that more heat or less heat is generated without affecting user-facing features. Based on another measured temperature, operation of the smart doorbell may be altered such that a chime that is electrically coupled to the smart doorbell device is not sounded in response to a doorbell actuation, but that a notification of the doorbell actuation is wirelessly transmitted by the smart doorbell device.

A sensor includes a printed circuit board having a first region and a second region linked together by a flexible linking portion. A free end portion of the first region opposite the flexible linking portion is movable with respect to the second region. The flexible linking portion is part of the printed circuit board.

A disaster prevention apparatus includes: an outer cover 11; a thermistor 14 that detects a physical quantity of a detection target; a protective portion 12 that accommodates the thermistor 14, that is provided on the outer cover 11, and that has an opening portion 122 through which the detection target flows in and out with respect to the thermistor 14; and a prevention portion 13 that prevents a contact object from coming into contact with the thermistor 14, and that is provided in the opening portion 122, wherein the prevention portion 13 is a projection, and the prevention portion 13 protrudes from the outer cover 11 side, the prevention portion 13 is provided at a position close to a center of an edge portion of the opening portion 122, and an outer surface of the prevention portion 13 is curved.

The present disclosure provides a temperature sensing device and a calibration method thereof. The temperature sensing device includes a current generation circuit, an analog-to-digital conversion (ADC) circuit and a processing circuit. The calibration method includes: by the current generation circuit, generating a temperature dependent current according to a temperature of a tested object, wherein the temperature dependent current is dependent on a reference current passing through an adjustable resistor of the current generation circuit; by the ADC circuit, performing an analog-to-digital conversion according to the temperature dependent current to generate a sensing value; by the processing circuit, comparing the sensing value with an ideal value; and by the processing circuit, adjusting a resistance value of the adjustable resistor according to a comparison result of the sensing value and the ideal value, so that the sensing value equals the ideal value.

The present disclosure provides a temperature sensing device and a calibration method thereof. The temperature sensing device includes a current generation circuit, an analog-to-digital conversion (ADC) circuit and a processing circuit. The calibration method includes: by the current generation circuit, generating a temperature dependent current according to a temperature of a tested object, wherein the temperature dependent current is dependent on a reference current passing through an adjustable resistor of the current generation circuit; by the ADC circuit, performing an analog-to-digital conversion according to the temperature dependent current to generate a sensing value; by the processing circuit, comparing the sensing value with an ideal value; and by the processing circuit, adjusting a resistance value of the adjustable resistor according to a comparison result of the sensing value and the ideal value, so that the sensing value equals the ideal value.

A method and apparatus for automatically measuring and storing a various measured values of an item, or a sequence of measured values of one or more item(s) suitable for single-handed use by a user. In particular, the present invention relates to a mobile computing device with one or more sensors for determining when to measure and record a particular value of one or more items. The mobile computing device may automatically measure the values based on sensing a change in the temperature value or through using proximity as detected by one or more onboard sensors. Additionally, the mobile computing device may automatically measure the values based on coming within range of an external proximity device. In response to automatically measuring the values, the measured values are stored along with additional information for record keeping purposes.

A method and apparatus for automatically measuring and storing a various measured values of an item, or a sequence of measured values of one or more item(s) suitable for single-handed use by a user. In particular, the present invention relates to a mobile computing device with one or more sensors for determining when to measure and record a particular value of one or more items. The mobile computing device may automatically measure the values based on sensing a change in the temperature value or through using proximity as detected by one or more onboard sensors. Additionally, the mobile computing device may automatically measure the values based on coming within range of an external proximity device. In response to automatically measuring the values, the measured values are stored along with additional information for record keeping purposes.