Abstract: A user terminal hardware detection system includes a computing device and an oscilloscope communicatively coupled to the computing device. The oscilloscope obtains a digital signal waveform diagram of a user terminal and sends the digital signal waveform diagram to the computing device. The computing device performs feature recognition on the digital signal waveform diagram using a fault analysis model to identify feature information of the digital signal waveform diagram. The computing device compares the identified feature information to feature information of a faulty hardware module and a fault type of the faulty hardware module in a fault type database. The computing device outputs the faulty hardware module and the fault type of the faulty hardware module represented by the feature information of the digital signal waveform diagram according to a comparison result.

Abstract: A protection circuit of a USB device can interrupt and restore the electrical coupling between a first interface and a second interface of the USB device as a user requires. A controlling module of the protection circuit outputs a first low-level signal or a second high-level signal according to a user operation, a switching module thereby connects or disconnects the first interface to or from the second interface according to the signal received. A USB device is also disclosed.

Abstract: A user terminal hardware detection system includes a computing device and an oscilloscope communicatively coupled to the computing device. The oscilloscope obtains a digital signal waveform diagram of a user terminal and sends the digital signal waveform diagram to the computing device. The computing device performs feature recognition on the digital signal waveform diagram using a fault analysis model to identify feature information of the digital signal waveform diagram. The computing device compares the identified feature information to feature information of a faulty hardware module and a fault type of the faulty hardware module in a fault type database. The computing device outputs the faulty hardware module and the fault type of the faulty hardware module represented by the feature information of the digital signal waveform diagram according to a comparison result.

Abstract: A protection circuit of a USB device can interrupt and restore the electrical coupling between a first interface and a second interface of the USB device as a user requires. A controlling module of the protection circuit outputs a first low-level signal or a second high-level signal according to a user operation, a switching module thereby connects or disconnects the first interface to or from the second interface according to the signal received. A USB device is also disclosed.

Abstract: A lockable storage device includes a main body defining a connector; and a locking mechanism including a stopping member and a driving plate assembly. The connector defines a receiving space for receiving a port, the stopping member is movable in the receiving space. The driving plate assembly includes a number of driving plates marked with numbers. When a combination of numbers, formed by surfaces which are on a same plane, is different from a predetermined number sequence, the storage device is locked, when the combination of numbers formed by the surfaces is the same as the predetermined number sequence, the storage device is unlocked.

Abstract: A circuit removing static electricity from a connected electronic device includes a detecting device, an amplifier, a switch device, and a control device. The detecting device detects a change of a magnetic flux surrounding the electronic device, and generates an analog electronic signal accordingly. The amplifier connects to the detecting device and amplifies the analog electronic signal. The control device connects to the amplifier, filters an amplified analog electronic signal, and generates a control signal. The switch device connected to the control device as well as the electronic device conducts the static electricity to earth in response to the control signal.

Abstract: A lockable storage device includes a main body defining a connector; and a locking mechanism including a stopping member and a driving plate assembly. The connector defines a receiving space for receiving a port, the stopping member is movable in the receiving space. The driving plate assembly includes a number of driving plates marked with numbers. When a combination of numbers, formed by surfaces which are on a same plane, is different from a predetermined number sequence, the storage device is locked, when the combination of numbers formed by the surfaces is the same as the predetermined number sequence, the storage device is unlocked.

Abstract: A circuit removing static electricity from a connected electronic device includes a detecting device, an amplifier, a switch device, and a control device. The detecting device detects a change of a magnetic flux surrounding the electronic device, and generates an analog electronic signal accordingly. The amplifier connects to the detecting device and amplifies the analog electronic signal. The control device connects to the amplifier, filters an amplified analog electronic signal, and generates a control signal. The switch device connected to the control device as well as the electronic device conducts the static electricity to earth in response to the control signal.

Abstract: The disclosure provides an electronic device and a detecting position method adapted for the electronic device. The device stores an infrared sensing mode and a capture mode. The method includes steps of: entering the infrared sensing mode in response to an input signal and capturing infrared signals from an external environment, amplifying the infrared signals and converting the infrared signals into digital signals, evaluating whether part of the infrared signals falls into a predetermined waveband, if yes, focusing on an infrared thermal source whose infrared signals fall into the predetermined waveband, switching from the infrared sensing mode to the capture mode, taking a photo of the infrared thermal source, and processing the photo to identify a position of the infrared thermal source in the photo and displaying the position of the infrared thermal source in the photo.

Abstract: An overvoltage and overcurrent protection circuit includes a connection jack, an overvoltage protection switch connected to the connection jack, an overcurrent protection switch, a voltage reference module, an overvoltage and overcurrent detection module, a comparing module, and a current control module. The overcurrent protection switch is connected to the overvoltage protection switch in serials, and further connected to a load. The voltage reference module is to output a reference voltage. The overvoltage and overcurrent detection module is to detect the voltage of the load and the current of the path. The comparing module is to compare the voltage of the load with the reference voltage, when greater, turns off the overvoltage protection switch, when not greater, turns on the overvoltage protection switch. The current control module is to turn off the overcurrent protection switch if greater than the preset value, and turn on the overcurrent protection switch if not greater.

Abstract: A light control signal generating circuit includes a photosensitive element, two transistors, and four resistances. A first resistance and the photosensitive element are connected in series between a power voltage terminal and a ground terminal. A base electrode of a first transistor is connected to a node between the first resistance and the photosensitive element, a collecting electrode is connected to the power voltage terminal through a second resistance, and an emitting electrode is connected to the ground terminal through a third resistance. A base electrode of a second transistor is connected to a node between the second resistance and the first transistor, a collecting electrode is connected to the power voltage terminal through a fourth resistance, and an emitting electrode is connected to the ground terminal through the third resistance. An output terminal is formed from a node between the fourth resistance and the second transistor.

Abstract: An overvoltage and overcurrent protection circuit includes a connection jack, an overvoltage protection switch connected to the connection jack, an overcurrent protection switch, a voltage reference module, an overvoltage and overcurrent detection module, a comparing module, and a current control module. The overcurrent protection switch is connected to the overvoltage protection switch in serials, and further connected to a load. The voltage reference module is to output a reference voltage. The overvoltage and overcurrent detection module is to detect the voltage of the load and the current of the path. The comparing module is to compare the voltage of the load with the reference voltage, when greater, turns off the overvoltage protection switch, when not greater, turns on the overvoltage protection switch. The current control module is to turn off the overcurrent protection switch if greater than the preset value, and turn on the overcurrent protection switch if not greater.

Abstract: The disclosure provides an electronic device and a detecting position method adapted for the electronic device. The device stores an infrared sensing mode and a capture mode. The method includes steps of: entering the infrared sensing mode in response to an input signal and capturing infrared signals from an external environment, amplifying the infrared signals and converting the infrared signals into digital signals, evaluating whether part of the infrared signals falls into a predetermined waveband, if yes, focusing on an infrared thermal source whose infrared signals fall into the predetermined waveband, switching from the infrared sensing mode to the capture mode, taking a photo of the infrared thermal source, and processing the photo to identify a position of the infrared thermal source in the photo and displaying the position of the infrared thermal source in the photo.

Abstract: A light control signal generating circuit includes a photosensitive element, two transistors, and four resistances. A first resistance and the photosensitive element are connected in series between a power voltage terminal and a ground terminal. A base electrode of a first transistor is connected to a node between the first resistance and the photosensitive element, a collecting electrode is connected to the power voltage terminal through a second resistance, and an emitting electrode is connected to the ground terminal through a third resistance. A base electrode of a second transistor is connected to a node between the second resistance and the first transistor, a collecting electrode is connected to the power voltage terminal through a fourth resistance, and an emitting electrode is connected to the ground terminal through the third resistance. An output terminal is formed from a node between the fourth resistance and the second transistor.

Abstract: An electronic baby monitoring device includes a sensor monitor and a motion sensor. The motion sensor communicates with the sensor monitor and includes an accelerometer, a control module, an emitting module, a power source, and a switch. The accelerometer senses the acceleration value of the motion sensor. When the control module determines that at least two acceleration values sensed continuously by the accelerometer respectively reach or exceed a predetermined value, the control module turns on the switch to control the power source to provide power to the emitting module, generates control signals, and controls the emitting module to emit the control signals to the sensor monitor to direct the sensor monitor to take action.

Abstract: An electrical soldering iron is provided. The soldering iron comprises a heating element, a constant temperature heating circuit, a motion sensor, and a processor. The constant temperature heating circuit is configured for heating the heating element. The motion sensor is configured for detecting motion of the electrical soldering iron. The processor is configured for determining motion state of the electrical soldering iron according to signals from the motion sensor and directing the constant temperature heating circuit to bring the heating element to a temperature of a predetermined value corresponding to the motion state.