Abstract: A temperature sensing device includes a substrate, a first reflective module, a first window cover, and a dual thermopile sensor. The first reflective module is disposed on the substrate, including a first mirror chamber with a narrow field of view (FOV), and the first reflective module focuses a thermal radiation from measured object to a first image plane in the first mirror chamber. The first window cover is disposed on the first reflective module, and the first window cover allows a selected band of the thermal radiation to pass through. The dual thermopile sensor is disposed on the substrate and located in the first mirror chamber, and the dual thermopile sensor senses a temperature data from the first image plane. Additional second reflective module, LED source plus pin hole with same FOV of dual thermopile sensor can illuminate the measured object for ease of placement of object to be heated.

Abstract: A converged power and network management system comprises a modular power distribution unit and a modular network switch unit. The modular power distribution unit and modular network switch unit may be physically and electrically engaged, which enables the modular power distribution unit to provide power to the modular network switch.

Abstract: Disclosed is a single physical antenna structure that has two ports and two ground points and functions as two separate and independent subantennas. Although the two subantennas are in close physical proximity and are physically connected, the antenna structure provides strong isolation to allow the subantennas to function independently of one another, particularly useful in MU-MIMO applications.

Abstract: A Power over Ethernet (PoE) system that includes a power source, an Ethernet transmission line, a powered device and a reset device is provided. The power source is configured to generate an electric power signal having a power level. The powered device is configured to receive the electric power signal through the Ethernet transmission line. The reset device includes a power terminal and a reset circuit. The power terminal is electrically coupled to the Ethernet transmission line. The reset circuit is electrically coupled between the power terminal and a ground terminal. Upon receiving a control signal, the reset circuit is configured to vary a voltage level of the electric power signal from the power level to a non-zero reset level for a predetermined time period to reset the powered device.

Abstract: A Power over Ethernet (PoE) system that includes a power source, an Ethernet transmission line, a powered device and a reset device is provided. The power source is configured to generate an electric power signal having a power level. The powered device is configured to receive the electric power signal through the Ethernet transmission line. The reset device includes a power terminal and a reset circuit. The power terminal is electrically coupled to the Ethernet transmission line. The reset circuit is electrically coupled between the power terminal and a ground terminal. Upon receiving a control signal, the reset circuit is configured to vary a voltage level of the electric power signal from the power level to a non-zero reset level for a predetermined time period to reset the powered device.

Abstract: A network device that includes a power source device (PSE) circuit, a MOS switch, a network connector and a detection unit is provided. The network connector has a first and a second terminal electrically coupled to the voltage source and to the ground terminal through the MOS switch respectively. Under the condition that the PSE circuit is not activated, the detection unit detects a first non-zero voltage pulse at the second terminal to determine that a powered device is attached to the network connector to activate the PSE circuit to generate and transfer the power to the powered device through the network connector. Under the condition that the PSE circuit is activated, the detection unit detects a second non-zero voltage pulse at the second terminal to determine that the powered device is detached from the network connector to deactivate the PSE circuit to stop generating the power.

Abstract: A network device that includes a power source device (PSE) circuit, a MOS switch, a network connector and a detection unit is provided. The network connector has a first and a second terminal electrically coupled to the voltage source and to the ground terminal through the MOS switch respectively. Under the condition that the PSE circuit is not activated, the detection unit detects a first non-zero voltage pulse at the second terminal to determine that a powered device is attached to the network connector to activate the PSE circuit to generate and transfer the power to the powered device through the network connector. Under the condition that the PSE circuit is activated, the detection unit detects a second non-zero voltage pulse at the second terminal to determine that the powered device is detached from the network connector to deactivate the PSE circuit to stop generating the power.