Abstract: An outdoor monitoring system includes a camera, a direct-current adapter, a solar cell unit and a power management unit. The power management unit includes a controller, a rechargeable power source, a first voltage detection circuit, and a second voltage detection circuit. The first voltage detection circuit detects a charging voltage of the solar cell unit for charging the rechargeable power source. The second voltage detection circuit detects an output voltage of the rechargeable power source applied to the camera. The controller selectively connects the rechargeable power source or the direct-current adapter to the camera according to the output voltage and connects or disconnects the rechargeable power source to the solar cell unit according the output voltage and the charging voltage.

Abstract: An electronic device includes a shell, a connector, a PCB and a pin header. The connector is mounted on the shell and includes an external connection terminal inside the shell and an internal connection terminal inside the shell and connected to the external connection terminal. The PCB is received in the shell and defines a number of vias. Two ends of the pin header respectively detachably fit into the internal connection terminal and the vias.

Abstract: A fastener includes a cylinder and a draw hook. The cylinder includes a main body, two resilient arms extending from an end of the main body, and a flange extending from a circumference of an opposite end of the main body. A number of protrusions spaced in the axial direction of the main body extends from an inside surface of each of the resilient arms. The draw hook includes a post slidably received in the cylinder, a taper-shaped engaging portion extending from an end of the post and exposed out of distal ends of the resilient arms, and a handle extending from an opposite end of the post. A diameter of the engaging portion gradually grows larger along a direction away from the post.

Abstract: A motherboard includes a main body and two relay devices attached on the main body. The main body includes a signal output terminal, a signal input terminal, a first connector module, and a second connector module. Each relay device includes a circuit board, a relay, and a third connector module. The input terminal outputs an input signal to the corresponding relay via the first and the third connector modules in turn. The relay corresponding to the signal input terminal outputs the input signal to the signal output terminal via the third connector module corresponding to the signal input terminal, the first connector module, the second connector module and the third connector module corresponding to the signal output terminal in turn.

Abstract: A control circuit includes a current sensing circuit, an analog digital converter (ADC), an amplifying circuit, a processor, and a switching circuit. The current sensing circuit senses current supplied to an electronic device by a power supply and outputs a first voltage signal. The amplifying circuit amplifies the first voltage signal output from the current sensing circuit to a second voltage signal. The ADC converts the second voltage signal to a digital signal. The processor outputs pulse width modulation (PWM) signals according to the digital signal. The switching circuit receives the PWM signals to control a fan of the electronic device according to the PWM signals.

Abstract: A fan control system for controlling a fan to dissipate heat from an electronic device includes a current detection circuit having a shunt resistor to receive current, a signal amplification circuit having an operational amplifier, and a switch circuit having an npn transistor and a pnp transistor. A first terminal of the shunt resistor is connected to the electronic device, a second terminal of the shunt resistor is connected to the electronic device via a power source and is grounded. A non-inverting terminal of the operational amplifier is connected to the first terminal of the shunt resistor, an inverting terminal of the operation amplifier is connected to the second terminal of the shunt resistor via a first resistor and connected to an output terminal of the operational amplifier via a second resistor. The output terminal of the operation amplifier is grounded via a third resistor and a sixth resistor.

Abstract: A camera includes a front portion, a rear portion and a electric brush connecting the front portion and the rear portion. The front portion includes a camera module for capturing image. The front portion further includes a wireless transmission module. The rear portion further includes a wireless receiving module. The front potion sends the image to the wireless receiving module by the wireless transmission module.

Abstract: A control circuit includes a triangular wave generating circuit, a temperature sensing circuit, a first comparator, and a switching circuit. The triangular wave generating circuit outputs a triangular wave signal. The temperature sensing circuit senses a temperature surrounding a fan and outputs a temperature signal. A non-inverting terminal of the first comparator is connected to the triangular wave generating circuit. An inverting terminal of the first comparator is connected to the temperature sensing circuit. The first comparator compares the triangular wave signal with the temperature signal to output a control signal. The switching circuit is connected between a power supply and the fan. The switching circuit turns on or off according to the control signal.

Abstract: An image segmentation system includes an image recording unit, an image processing unit and an image monitoring unit. The image recording unit obtains a panoramic image of a target area, and the image processing unit receives and processing image data from the image recording unit. The image processing unit divides the panoramic image into corresponding sub-images, and the sub-images are stored in the image monitoring unit.

Abstract: An aperture controlling system includes a CMOS image sensor, a brightness encoder, an aperture and an aperture driving circuit. The brightness encoder is used for extracting brightness information sensed by the CMOS image sensor and converting the brightness information into digital codes. The aperture driving circuit includes a D/A converter, a motor coil driving circuit, an environment sensing module, a benchmark voltage generator and a motor. The motor is mechanically connected to the aperture. The motor coil driving circuit includes a voltage comparator. The input and the output of the D/A converter are respectively coupled to the brightness encoder and the inverting input of the voltage comparator. The input and the output of the benchmark voltage generator are respectively coupled to the environment sensing module and the non-inverting input of the voltage comparator. The output of voltage comparator is connected to the motor.

Abstract: A camera image correction system includes an image correction device and an internet protocol camera intercommunicating with the image correction device. The image correction device includes an input module, a signal processing module, and a wireless communications module. The input module inputs and generates correction instructions that the signal processing module processes. The wireless communications module transmits the correction images to the internet protocol camera. The internet protocol camera includes an antenna, a system on chip, and a signal control module. The antenna receives the correction instruction; the signal control module processes the correction instructions to generate command signals. The system on chip controls the internet protocol camera according to the command signals to obtain monitoring images, the monitoring images are processed by the signal control module and transmitted to the image correction device through the antenna and the wireless communications module.

Abstract: A power conversion circuit for an internet protocol camera includes a voltage conversion circuit and a divider circuit electrically connected to the voltage conversion circuit. The voltage conversion circuit includes a linear voltage regulator for providing an operating voltage. The linear voltage regulator includes an input port, an output port and a feedback port. The divider circuit includes a first divider resistance and a second divider resistance. The output pot, the first divider resistance and the second divider resistance are electrically connected in series, the feedback port is electrically connected between the first divider resistance and the second divider resistance to obtain a feedback voltage. The input port is electrically a system power, and the output port outputs and provides an output voltage adjusted by the feedback voltage.

Abstract: A reset circuit includes two voltage dividing circuits, a switching circuit, a selection button, two voltage converters, and a processor. The voltage converters convert a first or second power supply for supplying power to the processor. When the first power supply supplies power to the processor the processor operates normally. When the second power supply supplies power to the processor, one of the voltage dividing circuits outputs a signal to the processor to restore an electronic device to factory settings according to the signal.

Abstract: A power supply circuit for an infrared cut removable (ICR) filter includes an identifying module, a supply mode module, a switching module, and a power source module. The identifying module generates a first identifying signal when the brightness of external light is higher than a preset brightness; otherwise, the identifying module generates a second identifying signal. The supply mode module generates a power supply corresponding to the power supply mode of the ICR filter. The switching module includes two connecting nodes for connecting to the ICR filter and loads the power supply generated by the supply mode module on one of the nodes correspondingly according to the first and second identifying signals. The power source module is connected to an external DC power supply and generates an operating voltage for the identifying module, the supply mode module, and the switching module.

Abstract: An infrared cut filter removable (ICR) module control apparatus includes a photoresistor, first to sixth electronic switches, an ICR module, a comparator, and a central processing unit (CPU). A first terminal of the photoresistor is connected to a power supply through a resistor. A second terminal of the photoresistor is grounded, and connected to the second to fourth electronic switches and the CPU through the first electronic switch. The second electronic switch is connected to the fifth and sixth switches. A node between the third and fourth switches is connected to a first input terminal of the ICR module and the non-inverting terminal of the comparator. A node between the fifth and sixth switches is connected to a second input terminal of the ICR module and the inverting terminal of the comparator. The CPU is connected to the output terminal of the comparator and connected to the first electronic switch.

Abstract: A filter conversion device includes a first filter, a second filter, a motor, and a comparator. The motor moves the first and second filters according to a control signal from a processor of the camera. Two input terminals of the comparator are respectively connected to two input terminals of the motor. An output terminal of the comparator is connected to the processor. The comparator detects the control signal transmitted to the motor and feeds back the detection result to the processor, for determining whether the control signal is correct.

Abstract: A filter conversion device includes a first filter, a second filter, a motor, and a microswitch. The motor moves the first or second filter according to a control signal from a processor of the camera. The micorswitch is mounted adjacent to the first filter. A first terminal of the microswitch is grounded. A second terminal of the microswitch is connected to a power supply with a resistor and is connected to the processor of the camera with a connector. When the first filter contacts the microswitch, the microswitch turns on.

Abstract: An automobile light control system includes first and second light groups, a battery, a micro control unit (MCU), a speed sensor, first and second switches, and an electronic switch. The battery is connected to the first light group through the first switch. The first light group is connected to the first terminal of the electronic switch through the second switch. The second terminal of the electronic switch is connected to the second light group. The control terminal of the electronic switch is connected to the MCU. The MCU is connected to the speed sensor to receive a speed signal. The MCU controls the electronic switch to be turned on in response to the speed signal being greater than a predetermined value. The MCU controls the electronic switch to be turned off in response to the speed signal being less than or equal to the predetermined value.

Abstract: A sensor system detection device for detecting quality of a sensor system includes a first connector electrically connected to the sensor system, a second connector; a display unit, a controller and an encoder. A first terminal of the encoder is connected to the first connector to receive first image data from the sensor system. A second terminal of the encoder is connected to the display unit via the second connector. A third terminal of the encoder is connected to the controller. The controller controls the encoder to transform the first image into second image data matching with the display unit. The second image data is transferred to the display unit.

Abstract: A camera includes a plurality of image capturing unit, a switch unit, and a processor unit. Each image capturing unit includes a lens capturing images and an image sensor transforming optical signals of the images captured by the lens into electric signals. The switch unit is electrically connected to all the image sensors. The processor unit is electrically connected to the switch unit. The image sensors of all the image capturing units are alternately connected to the processor unit to alternately transmit the electric signals generated by the image capturing units to the processor unit, and the processor unit transforms the electric signals into images respectively captured by all the image capturing units and combines the images together to form multiple images cooperatively captured by all the image capturing units.