摘要:
A method for guiding symmetric implantation of bone screws is provided. The method includes the steps of: providing a spinal image of a spine, wherein the spine has a first bone screw implanted in one side of a spinous process of the spine; obtaining a first implanting information of the first bone screw; setting a reference line in the spinal image; generating a second implanting information by mirroring the first implanting information with respect to the reference line; and guiding a second bone screw to be implanted in the other side of the spinous process according to the second implanting information. The method generates a second implanting information that is based on and symmetric to the first implanting information, thus allowing the bone screws to be precisely implanted in both sides of the spinous process and aligned with each other in the same transverse section of the spinous process.
摘要:
A surgical guide instrument capable of omni-directional positioning and an omni-directional positioning unit thereof are provided. The surgical guide instrument includes the omni-directional positioning unit, which is coupled with the surgical instrument. The omni-directional positioning unit is configured as a pyramid, and a plurality of reflectors is deposited on vertices of the pyramid, respectively. As the reflectors of the omni-directional positioning unit are arranged as a three-dimensional pyramid, the omni-directional positioning unit can be connected in any position to the surgical instrument and be detected correctly by a surgical guide system, thereby reducing surgical complexity.
摘要:
An analysis method for a regional image is disclosed for an image datum from a C-arm device. The analysis method includes: providing an indication module, reading the image datum, selecting a plurality of ROIs (Regions of Interest), calculating an average brightness of each of the ROIs, searching every of the steel ball image data, comparing each of the steel ball image data and analyzing each of the steel ball image data. By individually analyzing the regional image datum, the brighter or darker image signal can be excluded so that it can improve precision during searching the steel ball image data. Moreover, it is also more effective for comparing an image profile of the steel ball image datum with a real profile of the steel ball of the indication module. Thus, the steel ball image can be readily defined by its correspondence with the steel ball of the indication module.
摘要:
An analysis method for a regional image is disclosed for an image datum from a C-arm device. The analysis method includes: providing an indication module, reading the image datum, selecting a plurality of ROIs (Regions of Interest), calculating an average brightness of each of the ROIs, searching every of the steel ball image data, comparing each of the steel ball image data and analyzing each of the steel ball image data. By individually analyzing the regional image datum, the brighter or darker image signal can be excluded so that it can improve precision during searching the steel ball image data. Moreover, it is also more effective for comparing an image profile of the steel ball image datum with a real profile of the steel ball of the indication module. Thus, the steel ball image can be readily defined by its correspondence with the steel ball of the indication module.
摘要:
The present invention discloses a fuel-cell-based cogeneration system with radio frequency identification (RFID) sensors. The fuel-cell-based cogeneration system with RFID sensors includes the fuel-cell-based cogeneration system and an RFID data processing system. The RFID data processing system captures data of the temperature and flow rate from the RFID sensors, while the system data are in turn converted into RFID signals. The RFID data processing system transmits a control signal generated from the RFID signal to control the operation of the fuel-cell-based cogeneration system. Since the RFID transmission technology, the sensor error caused by wires is consequently reduced. Furthermore, overall sensitivity and accuracy of the RFID sensors are increased, which leads to an accompanying increase in the stability of the operating system.
摘要:
A charge-controlling system and a method therefor are applicable to a backup power system having a fuel-cell-based power supply and a battery. The charge-controlling system includes a bidirectional converter, a feedback circuit, a voltage controller, a PWM generator, a switch unit and an over-charging protection circuit. The feedback circuit generates a feedback signal corresponding to an output voltage of the bidirectional converter. The voltage controller generates a control voltage according to the feedback signal and a constant voltage, such that the PWM generator generates a PWM signal based on the control voltage. The over-charging protection circuit controls operation of the switch unit according to the feedback signal and a saturation voltage of the battery. When the switch unit electrically connects the bidirectional converter and the PWM generator, the bidirectional converter charges the battery with the power generated by the fuel-cell-based power supply according to the PWM signal.
摘要:
A charge-controlling system and a method therefor are applicable to a backup power system having a fuel-cell-based power supply and a battery. The charge-controlling system includes a bidirectional converter, a feedback circuit, a voltage controller, a PWM generator, a switch unit and an over-charging protection circuit. The feedback circuit generates a feedback signal corresponding to an output voltage of the bidirectional converter. The voltage controller generates a control voltage according to the feedback signal and a constant voltage, such that the PWM generator generates a PWM signal based on the control voltage. The over-charging protection circuit controls operation of the switch unit according to the feedback signal and a saturation voltage of the battery. When the switch unit electrically connects the bidirectional converter and the PWM generator, the bidirectional converter charges the battery with the power generated by the fuel-cell-based power supply according to the PWM signal.
摘要:
A system of a plurality of series-connected converter devices for a fuel cell apparatus and a method for controlling the system are provided. The system includes a fuel cell apparatus controller, the plurality of converter devices, a series connection unit, a Mux control unit, a power control unit, and a master controller. The output ends of the plurality of converter devices are connected in series by the series connection unit. The master controller reads signals from the power control unit and the Mux control unit and determines accordingly which converter devices need to be turned on to meet the requirement of a load. The method includes the steps of estimating a load, determining the number of the converter devices to be turned on, calculating an output power, discharging, and charging. Thus, the plurality of converter devices is controlled to output the required power of the load.
摘要:
A heat-driven thermoelectric generator device is provided. The thermoelectric generator device includes a heat-driven cooling module and a thermoelectric module. The heat-driven cooling module is used to convert heat energy received from outside into cool energy. The thermoelectric module can generate electric power by the temperature difference between the heat energy received from outside and the cool energy generated by the heat-driven cooling module. According to the implementation of the present invention, the thermoelectric generator device can use a natural or artificial heat source as the heat energy to achieve the effect of generating electric power.
摘要:
A system of a plurality of parallel-connected fuel cell converter devices and a method for controlling the system are provided. The system includes a plurality of fuel cell converter devices, a parallel connection unit, a power control unit, a Mux control unit, and a master controller. The output ends of the plurality of fuel cell converter devices are connected in parallel by the parallel connection unit. The master controller reads signals from the power control unit and the Mux control unit and determines accordingly which fuel cell converter devices need to be turned on to meet the requirement of a load. The method includes the steps of estimating a load, determining the number of the fuel cell converter devices to be turned on, calculating an output power, discharging, and charging. Thus, the plurality of fuel cell converter devices is controlled to output the required power of the load.