Abstract: A detection apparatus for unbalanced DC link capacitor voltage, the DC link provides a DC voltage and includes a plurality of capacitors coupled in series to two ends of the DC link and a plurality of balanced resistors coupled in series to two ends of the DC link and corresponding to the capacitors. The detection apparatus includes a plurality of sense resistors and a current sensor. One end of each sense resistor is coupled to a common-connected node of two capacitors, and the other end thereof is coupled to a common-connected node of two balanced resistors. The current sensor is coupled to one of the sense resistors and measures a current value of a current flowing through the sense resistor coupled to the current sensor.

Abstract: A pre-charge control circuit includes a control unit, a conversion unit, and a pre-charge switch. The control unit provides a control signal according to a PWM signal, and the conversion unit provides a control voltage according to the control signal. The pre-charge switch adjusts a magnitude of the current flowing through the input path of the electronic circuit according to the control voltage.

Abstract: A power apparatus applied in an SST structure includes a first AC-to-DC conversion unit, a first DC bus, an isolated transformer, a DC-to-AC conversion unit, a second AC-to-DC conversion unit, and a second DC bus. The first AC-to-DC conversion unit has a first bridge arm and a second bridge arm. The first DC bus provides a first DC voltage. The isolated transformer has a primary side and a secondary side. The DC-to-AC conversion unit has a third bridge arm and a fourth bridge arm. The second AC-to-DC conversion unit has a fifth bridge arm and a sixth bridge arm. The second DC bus provides a second DC voltage.

Abstract: A power apparatus applied in an SST structure includes a first AC-to-DC conversion unit, a first DC bus, an isolated transformer, a DC-to-AC conversion unit, a second AC-to-DC conversion unit, and a second DC bus. The first AC-to-DC conversion unit has a first three-level bridge arm and a second three-level bridge arm. The first DC bus provides a first DC voltage. The isolated transformer has a primary side and a secondary side. The DC-to-AC conversion unit has a third three-level bridge arm and a fourth three-level bridge arm. The second AC-to-DC conversion unit has a fifth three-level bridge arm and a sixth three-level bridge arm. The second DC bus provides a second DC voltage.

Abstract: A power apparatus applied in a solid state transformer structure includes an AC-to-DC conversion unit, a first DC bus, and a plurality of bi-directional DC conversion units. First sides of the bi-directional DC conversion units are coupled to the first DC bus. Second sides of the bi-directional DC conversion units are configured to form at least one second DC bus, and the number of the at least one second DC bus is a bus number. The bi-directional DC conversion units receive a bus voltage of the first DC bus and convert the bus voltage into at least one DC voltage, or the bi-directional DC conversion units receive at least one external DC voltage and convert the at least one external DC voltage into the bus voltage.

Abstract: A three-phase power apparatus with bidirectional power conversion applied to charge a battery of an electric vehicle. The three-phase charging apparatus includes an AC-to-DC conversion unit, a first DC bus, a first DC-to-DC conversion unit, a second DC bus, and a second DC-to-DC conversion unit. The first DC bus is coupled to the AC-to-DC conversion unit. The first DC-to-DC conversion unit includes an isolated transformer, a resonant tank, a first bridge arm assembly, and a second bridge arm assembly. The first bridge arm assembly is coupled to the first DC bus and a primary side of the isolated transformer. The second bridge arm assembly is coupled a secondary side of the isolated transformer. The second DC bus is coupled to the second bridge arm assembly. The second DC-to-DC conversion unit is coupled to the second DC bus and the battery.

Abstract: A power apparatus applied in an SST structure includes a first AC-to-DC conversion unit, a first DC bus, an isolated transformer, a DC-to-AC conversion unit, a second AC-to-DC conversion unit, and a second DC bus. The first AC-to-DC conversion unit has a first three-level bridge arm and a second three-level bridge arm. The first DC bus provides a first DC voltage. The isolated transformer has a primary side and a secondary side. The DC-to-AC conversion unit has a third three-level bridge arm and a fourth three-level bridge arm. The second AC-to-DC conversion unit has a fifth three-level bridge arm and a sixth three-level bridge arm. The second DC bus provides a second DC voltage.

Abstract: A power conversion system with abnormal energy protection includes a plurality of DC input power sources, a plurality of DC power converters, two output capacitors, and a protection circuit. An input side of each DC power converter is correspondingly coupled to one of the DC input power sources, and output sides of the DC power converters are coupled in parallel to each other to form a DC output bus. Two output capacitors are coupled in series between a positive voltage end and a negative voltage end of the DC output bus. The protection circuit is coupled between the DC input power sources and the two output capacitors. When one of the two output capacitors is abnormal, the protection circuit decouples the DC input power sources from the two output capacitors in a shorted-circuit manner.

Abstract: An integrated wireless data system including a wireless load cell assembly and method for measuring operational data of one or more components for safety, health monitoring, and control is provided. The wireless load cell assembly can include an energy storage device and may be configured to allow for bi-directional communication with a base unit to store operational parameters in a database for use in development of predictive maintenance techniques. The axial load cell can rotate freely for simple installation without regard to rotational orientation. A power management strategy and energy harvesting system are provided to ensure long term use of the wireless load cell assembly without the need to replace the energy storage device.

Abstract: An integrated wireless data system including a wireless load cell assembly and method for measuring operational data of one or more components for safety, health monitoring, and control is provided. The wireless load cell assembly can include an energy storage device and may be configured to allow for bi-directional communication with a base unit to store operational parameters in a database for use in development of predictive maintenance techniques. The axial load cell can rotate freely for simple installation without regard to rotational orientation. A power management strategy and energy harvesting system are provided to ensure long term use of the wireless load cell assembly without the need to replace the energy storage device.

Abstract: A camera includes a photo-sensitive element and a controller. The controller is electrically connected to the photo-sensitive element. The photo-sensitive element is configured to capture an image of an object. The controller is configured to convert a color level value of each of pixels of the image into an image gray level value, and the controller is configured to generate an alarm message to display on a screen of the camera when one of the image gray level values is higher than a predetermined gray level threshold value.

Abstract: A camera includes a photo-sensitive element and a controller. The controller is electrically connected to the photo-sensitive element. The photo-sensitive element is configured to capture an image of an object. The controller is configured to convert a color level value of each of pixels of the image into an image gray level value, and the controller is configured to generate an alarm message to display on a screen of the camera when one of the image gray level values is higher than a predetermined gray level threshold value.

Abstract: A method for checking a camera includes the steps of capturing an image of an object using a photo-sensitive element, converting the color level value of each of a plurality of pixels of the image into image gray level values, and when one of the image gray level values is higher than a predetermined gray level threshold value, displaying an alarm message on the screen of the camera. A camera is also disclosed herein.

Abstract: A method for checking a camera includes the steps of capturing an image of an object using a photo-sensitive element, converting the color level value of each of a plurality of pixels of the image into image gray level values, and when one of the image gray level values is higher than a predetermined gray level threshold value, displaying an alarm message on the screen of the camera. A camera is also disclosed herein.

Abstract: A structure of an apparatus for sharing video input/output modules among handheld devices is provided, including a sharing slot, with a top golden finger part and a bus cable to form a first signal path from the video input module of a handheld device, and a bottom golden finger part and a bus cable and a connector to from a second signal path to a video input processor of the handheld device. The present invention may further include a bypass element for shorting the two signal paths by connecting the top golden finger part and the bottom golden finger part of the sharing slot. With the present invention, a second handheld device having extending signal paths can be inserted into the sharing slot of the first handheld to use the video input/output module of the first handheld device to accomplish the sharing of video input/output modules among handheld devices.

Abstract: A method and apparatus of color image rotation for display and recording using JPEG compression and decompression is provided. The method includes the steps of: setting the operation modes of JPEG encoder and JPEG decoder respectively; waiting until the image data ready for encoding; performing JPEG encoding and reentry information processing; waiting until the compression of one entire frame of image completed; setting the operation mode of JPEG encoder; and then performing JPEG decoding and reentry information updating processing. For displaying the image on an image output device, the method includes the steps of: displaying processing; waiting until JPEG decoding completed; and displaying final image on the display. At this point, the process of one frame display is accomplished. On the other hand, for recording to a mass storage device, the method includes the steps of: standard lossless JEPG encoding; waiting until JPEG encoding completed; and storing final encoded data to the mass storage device.

Abstract: The present invention provides an automatic electrostatic discharge (ESD) detection system connected to a plurality of current loops. For each of the current loops, the automatic ESD detection system can detect a plurality of electrical devices connected in sequence on the one current loop, and check if the electrical devices have abnormal ESD. The automatic ESD detection system includes a micro-controller, a plurality of circuit connection ports, a metrology unit, a circuit switching unit, a prompt unit, and two ground wires, wherein when one of the circuit connection ports is switched to be connected to the metrology unit, the one of the circuit connection ports remains electrically connected to one of the ground wires.

Abstract: A structure of an apparatus for sharing video input/output modules among handheld devices is provided, including a sharing slot, with a top golden finger part and a bus cable to form a first signal path from the video input module of a handheld device, and a bottom golden finger part and a bus cable and a connector to from a second signal path to a video input processor of the handheld device. The present invention may further include a bypass element for shorting the two signal paths by connecting the top golden finger part and the bottom golden finger part of the sharing slot. With the present invention, a second handheld device having extending signal paths can be inserted into the sharing slot of the first handheld to use the video input/output module of the first handheld device to accomplish the sharing of video input/output modules among handheld devices.

Abstract: A power control device is to be used with a pressing iron which includes a soleplate, a housing mounted on the soleplate and provided with a handle, a heating device disposed in the housing and operable so as to heat the soleplate, and a power supplying unit for supplying electric power to the heating device. The power control device includes a switch circuit adapted to connect electrically the heating device and the power supplying unit, an optical sensor unit adapted to be mounted on the handle of the housing, the optical sensor unit generating a first control signal when the handle is released and a second control signal when the handle is gripped, and a timer circuit connected electrically to the switch circuit and the optical sensor unit.

Abstract: An electronic timer activates a switch circuit so as to connect electrically a heating device and a power supplying unit of a coffee maker for a predetermined brewing period in order to heat water that is supplied to a filter basket and that comes from a water reservoir of the coffee maker. The processing unit activates the switch circuit for the predetermined brewing period when the brewing time coincides with the current time. A temperature sensing unit includes a temperature-controlled switch which connects the switch circuit to the heating device when temperature of the heating device is below a lower limit of a predetermined temperature range, and which disconnects the switch circuit from the heating device when the temperature is above an upper limit of the temperature range. The temperature sensing unit further includes a signal generating circuit which interconnects the temperature-controlled switch and the processing unit.