Abstract: A circuit for 3D ultrasound imaging systems includes multiple sensor units, multiple unit circuits and multiple row sharing circuits. The unit circuits are connected with the sensor units respectively. Each row of unit circuits share a row sharing circuit. Each unit circuit includes a first electrically controlled switch, a second electrically controlled switch and a control circuit. Each row sharing circuit includes a signal transmission bus, a signal receiving bus and a row main control circuit. The signal transmission bus and the signal receiving bus of each row sharing circuit extend through a corresponding row of unit circuits. The row main control circuit of each row is configured to transmit main control signals, transmission control signals and receiving control signals to a corresponding row of unit circuits so as to select the corresponding sensor units to transmit or receive ultrasound signals.

Abstract: A reader for medical implants includes an antenna and a transceiver chip connected with the antenna. The transceiver chip includes a power amplifier and a resistor. The power amplifier is connected with a reference voltage through the resistor and configured to produce a first communication signal with high frequency and transmit the first communication signal to the medical implants through the antenna. The medical implant receives the first communication signal and produces a second communication signal according to variation of parameters of the medical implant. The antenna is configured to receive the second communication signal. The power amplifier is further configured to vary a DC current which flows through the resistor according to the second communication signal and read signals of the medical implant according to variation of the DC current. The power amplifier is further configured to modulate the second communication signal into a low frequency signal.

Abstract: An RF energy harvesting system includes an antenna, an impedance matching network, an RF rectifier module, an enhanced RF rectifier module, a protection circuit, a power control module, an energy storage branch and load branches. The antenna receives RF signals and converts the RF signals into electric energy. The impedance matching network produces an initial voltage signal according to the electric energy output by the antenna. The RF rectifier module converts the initial voltage signal into a first voltage signal. The enhanced RF rectifier module converts the initial voltage signal into a second voltage signal. The power control module is self-driven through the first voltage signal and the second voltage signal. The RF rectifier module adjusts the internal electrical connection according to control signals of the power control module. The energy storage branch stores the electric energy output by the power control module.

Abstract: A voltage converter for medical devices includes a switch capacitor converter core including a plurality of power transistor switches configured to receive an input voltage and output an output voltage; a switch driver connected with the switch capacitor converter core and configured to turn on corresponding power transistor switches in the switch capacitor converter core so as to supply power to a load receiving the output voltage; a switch signal router connected with the switch driver and configured to selectively transmit signals required by the switch driver; a gain selection decoder connected with the switch signal router; a gain controller connected with the gain selection decoder, the gain selection decoder being configured to decode gain selection instructions transmitted from the gain controller; an input adjusting device connected with the gain controller and configured to receive the input voltage and a reference voltage, to indicate relationship between the input voltage and the reference voltage

Abstract: A voltage converter for medical devices includes a switch capacitor converter core including a plurality of power transistor switches configured to receive an input voltage and output an output voltage; a switch driver connected with the switch capacitor converter core and configured to turn on corresponding power transistor switches in the switch capacitor converter core so as to supply power to a load receiving the output voltage; a switch signal router connected with the switch driver and configured to selectively transmit signals required by the switch driver; a gain selection decoder connected with the switch signal router; a gain controller connected with the gain selection decoder, the gain selection decoder being configured to decode gain selection instructions transmitted from the gain controller; an input adjusting device connected with the gain controller and configured to receive the input voltage and a reference voltage, to indicate relationship between the input voltage and the reference voltage

Abstract: A charging system for transportation vehicles includes: a photovoltaic battery panel installed on a vehicle; a camera module; a first actuating device connected with the camera module; a light source; a second actuating device connected with the light source; and a controller being connected with the camera module, the first actuating device, the light source and the second actuating device. The controller is configured to control the first actuating device to rotate, and through the first actuating device control the camera module to capture a preset pattern on the vehicle. After the camera module has captured the preset pattern, the controller is configured to control the second actuating device to rotate accordingly so that the light source projects light to the photovoltaic battery panel and thereby charge the photovoltaic battery panel.

Abstract: A mobile ECG system includes: a multiplexor, the multiplexor comprising an input port connected with a plurality of electrodes, two output ports, and a control port; a digital detection module being connected with one output port of the multiplexor; an analog detection module being connected with the other output port of the multiplexor and configured to detect a heart beat without utilizing any portion of the digital detection module; and a processor being connected with the control port of the multiplexor and configured to receive an electrical signal and control the multiplexor through the control port to selectively transmit output of all of the electrodes to the analog detection module or the digital detection module based on the electrical signal.

Abstract: A DC-DC converter for implantable medical devices includes a switch capacitor converter core including a plurality of power transistor switches configured to receive an input voltage and output an output voltage; a switch driver connected with the switch capacitor converter core and configured to turn on corresponding power transistor switches in the switch capacitor converter core so as to supply power to a load receiving the output voltage; a switch signal router connected with the switch driver and configured to selectively transmit signals required by the switch driver; a gain selection decoder connected with the switch signal router; a gain controller connected with the gain selection decoder, the gain selection decoder being configured to decode gain selection instructions transmitted from the gain controller; an input adjusting device connected with the gain controller and configured to receive the input voltage and a reference voltage, to indicate relationship between the input voltage and the referen

Abstract: An automobile charging system includes: a photovoltaic battery panel installed at a bottom of a vehicle; a camera module; a first actuating device connected with the camera module; a light source; a second actuating device connected with the light source; and a controller being connected with the camera module, the first actuating device, the light source and the second actuating device. The controller is configured to control the first actuating device to rotate, and through the first actuating device control the camera module to capture a preset pattern disposed at the bottom of the vehicle. After the camera module has captured the preset pattern disposed at the bottom of the vehicle, the controller is configured to control the second actuating device to rotate accordingly so that the light source projects light to the photovoltaic battery panel and thereby charge the photovoltaic battery panel.

Abstract: A wearable ECG system includes a plurality of electrodes; a multiplexor, the multiplexor including an input port, two output ports, and a control port, the input port of the multiplexor being connected with the electrodes; an analog detection module being connected with one output port of the multiplexor; a digital detection module being connected with the other output port of the multiplexor; a processor being connected with the control port of the multiplexor and the digital detection module; and a motion detection module connected with the processor and configured to detect acceleration of the wearable ECG system and output an electrical signal accordingly. The processor is configured to receive the electrical signal from the motion detection module, and control the multiplexor to selectively transmit output of the electrodes to the analog detection module or the digital detection module based on the electrical signal.

Abstract: A lighting control system includes a first light intensity sensor, a second light intensity sensor, a data analysis module, a controller, a first light control module, a second light control module, a residual light control module, a display module, an alarm module, a power supply monitoring module, a UPS power supply, a power supply, a time synchronization module and an activity detection module. The first light intensity sensor and the second light intensity sensor enable the system to automatically turn on lights in a first location for lighting when the light intensity in the first location satisfies certain requirements. The activity detection module enables the system to turn on lights in the first location and lights in a second location within the first location when a light intensity difference is out of a certain range and there are activities of people in the first location.

Abstract: A control system for exhibition hall lighting circuit includes a first light intensity sensor, a second light intensity sensor, a data analysis module, a controller, a cabinet light control module, an exhibition hall light control module, a residual light control module, a display module, an alarm module, a power supply monitoring module, a UPS power supply, a power supply, a time synchronization module and an activity detection module. The first light intensity sensor and the second light intensity sensor enable the system to automatically turn on lights in an exhibition hall for lighting when the light intensity in the exhibition hall satisfies certain requirements. The activity detection module enables the system to turn on exhibition hall lights and cabinet lights in the exhibition hall when a light intensity difference is out of a certain range and there are activities of people in the exhibition hall.

Abstract: A solar bioelectrical impedance spectrometer includes a microprocessor module, a radio module connected with the microprocessor module, a spectrometer module connected with the microprocessor module, a battery management module, a battery module connected with the battery management module, a solar power supply management module separately connected with the battery management module and the microprocessor module and a wearable solar battery module connected with the solar power supply management module. The battery management module is configured for receiving current output from the solar power supply management module under a preset condition and charging the battery module by the current. The spectrometer module includes an impedance network analyzer, a differential amplifier connected with the impedance network analyzer, and a wide-band current source connected with the impedance network analyzer.

Abstract: A solar bioelectrical impedance spectrometer includes a microprocessor module, a radio module connected with the microprocessor module, a spectrometer module connected with the microprocessor module, a battery management module, a battery module connected with the battery management module, a solar power supply management module separately connected with the battery management module and the microprocessor module and a wearable solar cell module connected with the solar power supply management module. The battery management module is configured for receiving current output from the solar power supply management module under a preset condition and charging the battery module by the current. The spectrometer module includes an impedance network analyzer, a differential amplifier connected with the impedance network analyzer, and a wide-band current source connected with the impedance network analyzer.

Abstract: A wearable power management system includes: a bottom coating layer; a bottom center layer disposed above the bottom coating layer; a circuit layer disposed above the bottom center layer; a top center layer disposed above the circuit layer, and a top coating layer disposed above the top center layer. The Young's modulus of the bottom coating layer and the top coating layer is greater than the Young's modulus of the bottom center layer and the top center layer. The circuit layer includes a device layer and a connection layer disposed above the device layer.

Abstract: An automobile charging system includes: a photovoltaic battery panel installed at a bottom of a vehicle; a camera module; a first actuating device connected with the camera module; a light source; a second actuating device connected with the light source; and a controller being connected with the camera module, the first actuating device, the light source and the second actuating device. The controller is configured to control the first actuating device to rotate, and through the first actuating device control the camera module to capture a preset pattern disposed at the bottom of the vehicle. After the camera module has captured the preset pattern disposed at the bottom of the vehicle, the controller is configured to control the second actuating device to rotate accordingly so that the light source projects light to the photovoltaic battery panel and thereby charge the photovoltaic battery panel.

Abstract: A wearable power management system includes: a bottom coating layer; a bottom center layer disposed above the bottom coating layer; a circuit layer disposed above the bottom center layer; a top center layer disposed above the circuit layer, and a top coating layer disposed above the top center layer. The bottom center layer and the top center layer are made of an ultra-low Young's modulus material. The Young's modulus of the bottom coating layer and the top coating layer is greater than the Young's modulus of the bottom center layer and the top center layer. The circuit layer includes a device layer and a connection layer disposed above the device layer.

Abstract: An infrared automobile charging system includes: a photovoltaic battery panel installed at a bottom of a vehicle; a camera module; a first actuating device connected with the camera module; an infrared light source; a second actuating device connected with the infrared light source; and a controller being connected with the camera module, the first actuating device, the infrared light source and the second actuating device. The controller is configured to control the first actuating device to rotate, and through the first actuating device control the camera module to capture a preset pattern disposed at the bottom of the vehicle. After the camera module has captured the preset pattern disposed at the bottom of the vehicle, the controller is configured to control the second actuating device to rotate accordingly so that the infrared light source projects infrared light to the photovoltaic battery panel and thereby charge the photovoltaic battery panel.

Abstract: A current sensor for biomedical measurements includes: a first amplifier; a first capacitor; a second capacitor; a first switch connected in parallel with the first capacitor; a second switch connected in parallel with the second capacitor; a second amplifier; a third capacitor; a resistor; and a switched capacitor network. The first capacitor and the second capacitor are connected in series and across a first input and output of the first amplifier. The third capacitor and the resistor are respectively connected across a first input and output of the second amplifier. The switched capacitor network is connected between the output of the first amplifier and the first input of the second amplifier.

Abstract: A system for three dimensional imaging includes: a light source; a modulator connected with the light source and configured to modulate output of the light source with a frequency sweep signal; an optical circuitry connected to the light source; a light sensor circuitry connected with the optical circuitry and configured to sense optical output of the optical circuitry and convert the optical output into a plurality of electrical signals; and a signal processing circuit connected with the light sensor circuitry and configured to extract 3D information of the object from the electrical signals. A mobile phone having the system and a method for three dimensional imaging are also provided.