A door access control method includes detecting whether a person is intending to pass through a door access control device. Then, it is identified whether a body temperature of the person near the door access control device exceeds a threshold value. The door access control device carries out an unlocking judgment procedure when the body temperature is below the threshold value. The unlocking judgment procedure is not carried out when the body temperature is not below the threshold value. Next, it is identified whether the person is qualified to pass through the door access control device based on the unlocking judgment. The door access control device remains in a locking state when the person is identified as not qualified to pass through the door access control device. The unlocking state is lifted when the person is identified as qualified to pass through the door access control device.

This patent specification relates to a wall switch that comprises a docking station and a user-removable wall-switch head unit. In some embodiments, the docking station is configured to receive the user-removable wall-switch head unit, and configured to be permanently connected to a wall and coupled to high-power voltage wires. In some embodiments, the user-removable wall-switch head unit is configured to be user-insertable into said docking station and user-removable therefrom such that the user is not exposed to high-voltage connections when inserting or removing. In some embodiments, the wall switch controller further comprises inputs and outputs and circuitry for switchably controlling household line current power to a household electrical fixture. In some embodiments, the wall switch controller further comprises an occupancy sensor, a temperature sensor, or a processor.

Aspects and examples described herein provide a lightweight radiation shielding structure for infrared cameras. In one example, a top radiation shielding element and a bottom radiation shielding element are placed as close as possible to an infrared detector to minimize excess weight added to the infrared camera while providing optimal radiation shielding. Such aspects and examples provide important functionality for numerous weight-sensitive applications in high-radiation environments.

A complementary metal oxide semiconductor (CMOS) device embedded with micro-electro-mechanical system (MEMS) components in a MEMS region is disclosed. The MEMS components, for example, are infrared (IR) thermosensors. The MEMS sensors are integrated on the CMOS device monolithically after CMOS processing. For example, the MEMS sensors are formed over a BEOL dielectric of a CMOS device. The device is encapsulated with a CMOS compatible IR transparent cap to hermetically seal the MEMS sensors in the MEMS region.

A linear actuator includes a casing that contains a moveable shaft moved by a motor in response to a drive signal and coupled to an encoder that determines an actual instantaneous position of the shaft and forms part of a control loop that adjusts the drive signal so as to ensure accurate positioning of the shaft. A temperature sensor mounted on the shaft produces a temperature signal indicative of instantaneously measured temperature, and a temperature compensator responsive to the measured temperature for generating a negative or positive offset for correcting the drive signal so as to move the shaft to a positon that is corrected for instantaneous expansion or contraction of the shaft owing to departures of the shaft's actual temperature from a known baseline temperature.

This patent specification relates to various smart-home systems. Such a system may include a battery-powered smart home device that communicates using a first wireless protocol characterized by relatively low power usage and relatively low data rates. Such a system may further include a smart wall outlet device. The smart wall outlet device may include wireless communication circuitry comprising a first wireless interface and a second wireless interface. The first wireless interface may be configured to communicate with the battery-powered smart home device using the first wireless protocol. The second wireless interface may be configured to serve as a communication bridge between the battery-powered smart home device and a wireless network that uses a second communication protocol characterized by relatively higher power usage and relatively higher data rates.

A solar radiation heat sensor device includes: a black plate having a black surface; a silver plate having a silvery-white surface; a casing that supports the black plate and the silver plate in such a manner as to be exposed to an outside with the black surface and the silvery-white surface facing the same direction; a thermistor which is accommodated in the casing and is configured to measure temperatures of each of the black plate and the silver plate; and a processor configured to calculate a solar radiation heat amount based on a difference between the temperature of the black plate and the temperature of the silver plate, the temperatures being measured by the thermistor.

A wearable device includes a case and a far infrared temperature sensing device. The case has a first opening. The far infrared temperature sensing device is disposed inside the case of the wearable device. The far infrared temperature sensing device includes an assembly structure, a sensor chip, a filter structure, and a metal shielding structure. The assembly structure has an accommodating space and a top opening. The sensor chip is disposed in the accommodating space of the assembly structure. The filter structure is disposed above the sensor chip. The metal shielding structure is disposed above the sensor chip, and has a second opening to expose the filter structure. The first and second openings are communicated to cooperatively define a through hole.

An infrared body temperature measurement doll, includes a doll body and a temperature measurement circuit disposed in the doll body, wherein the temperature measurement circuit includes an infrared light filter, an infrared thermopile sensing element having a chip structure, an amplification circuit, a display module, a battery, and a power supply switch; the infrared light filter is disposed on the infrared thermopile sensing element having a chip structure; the infrared thermopile sensing element having a chip structure, the amplification circuit, and the display module are sequentially electrically connected; the battery supplies power to the infrared thermopile sensing element having a chip structure, the amplification circuit, and the display module; the infrared thermopile sensing element is disposed in an organ of the doll body in communication with the ambient; and the infrared thermopile sensing element senses a human body temperature via a hole on the organ.

A wearable device includes a case and a far infrared temperature sensing device. The case has a first opening. The far infrared temperature sensing device is disposed inside the case of the wearable device. The far infrared temperature sensing device includes an assembly structure, a sensor chip, a filter structure, and a metal shielding structure. The assembly structure has an accommodating space and a top opening. The sensor chip is disposed in the accommodating space of the assembly structure. The filter structure is disposed above the sensor chip. The metal shielding structure is disposed above the sensor chip, and has a second opening to expose the filter structure. The first and second openings are communicated to cooperatively define a through hole.