Abstract: An eye tracking device and an eye tracking method are provided. The eye tracking device includes a sensor and multiple signal transmitting units. The sensor is disposed on an eyeball of a user. The sensor has multiple signal receiving units. The signal transmitting units are disposed around the sensor and surround the sensor. The signal transmitting units respectively transmit multiple transmitting signals. The signal receiving units receive the transmitting signals to respectively generate multiple sensing signals. The eye tracking device calculates a position of the eyeball according to the sensing signals.

Abstract: A control device and a correcting method of a control device with a strength feedback function are disclosed. The control device includes a vibrator, a driver, a strength sensor, and a processor. In correction procedures, the driver provides a driving signal with a plurality of different setting voltage values respectively to the vibrator. In each correction procedure, the driver adjusts a frequency of the driving signal to setting frequency values by time division. In the correction procedures, the strength sensor senses a strength generated by a vibration of the vibrator to obtain strength sensing information respectively corresponding to the setting voltage values. The processor analyzes the strength sensing information, the setting frequency values, and the setting voltage values to obtain relationship information between the setting frequency values and the setting voltage values corresponding to each strength sensing information.

Abstract: An eye tracking device and an eye tracking method are provided. The eye tracking device includes a sensor and multiple signal transmitting units. The sensor is disposed on an eyeball of a user. The sensor has multiple signal receiving units. The signal transmitting units are disposed around the sensor and surround the sensor. The signal transmitting units respectively transmit multiple transmitting signals. The signal receiving units receive the transmitting signals to respectively generate multiple sensing signals. The eye tracking device calculates a position of the eyeball according to the sensing signals.

Abstract: A stress feedback device and a virtual image display system are provided. The stress feedback device includes a position sensor and a pressure generator. The position sensor is configured to generate a position information based on a trigger signal and send the position information to a host. The pressure generator is configured to apply a stress to a target area based on the trigger signal and adjust an intensity of the stress.

Abstract: A detection system and a detection method are provided. The detection system includes at least one illumination device and a host. The illumination device has a radar to obtain spatial information of a position of the illumination device. The host is connected to the at least one illumination device. The host receives the spatial information from the illumination device and transmits a change of the spatial information to an emergency system.

Abstract: A gas detection apparatus including at least one application terminal and at least one equipment terminal is provided. The application terminal sends a plurality of detection electric waves. The equipment terminal is configured to receive a plurality of transmission electric waves respectively generated according to the detection electric waves. The equipment terminal is further configured to calculate a plurality of reference attenuation values of the transmission electric waves in a correction mode; calculate a plurality of detection attenuation values of the transmission electric waves in a monitoring mode; and generate a detection result by comparing the reference attenuation values with the detection attenuation values.

Abstract: A detection system and a detection method are provided. The detection system includes at least one illumination device and a host. The illumination device has a radar to obtain spatial information of a position of the illumination device. The host is connected to the at least one illumination device. The host receives the spatial information from the illumination device and transmits a change of the spatial information to an emergency system.

Abstract: A gas detection apparatus including at least one application terminal and at least one equipment terminal is provided. The application terminal sends a plurality of detection electric waves. The equipment terminal is configured to receive a plurality of transmission electric waves respectively generated according to the detection electric waves. The equipment terminal is further configured to calculate a plurality of reference attenuation values of the transmission electric waves in a correction mode; calculate a plurality of detection attenuation values of the transmission electric waves in a monitoring mode; and generate a detection result by comparing the reference attenuation values with the detection attenuation values.

Abstract: The invention provides a three-dimensional model construction system and a three-dimensional model construction method. The three-dimensional model construction system includes a first sensor hub and first sub sensor. The first sensor hub is placed at a first part of a body for transmitting a first detecting signal. The first sub sensor is placed at a second part of the body for transmitting a second detecting signal back to the first sensor hub in response to receiving the first detecting signal from the first sensor hub. The first sensor hub records a first round trip time of the first detecting signal and the second detecting signal, and the first round trip time is applied to calculate a length between the first part of the body and the second part of the body for constructing a three-dimensional body model.