Abstract: The present disclosure relates to the field of intelligent wearable technologies, and provides a power supply circuit, a power supply circuit generation method, and a power supply circuit control method. The present disclosure provides a power supply circuit, including: a bandgap voltage reference Bandgap, a real-time detection and control module, and an alternate voltage source module, where the real-time detection and control module adjusts an output point voltage of the alternate voltage source module according to an output voltage of the Bandgap; and when the output point voltage of the alternate voltage source module reaches a target voltage, the real-time detection and control module closes the Bandgap and supplies power by using the alternate voltage source module.

Abstract: Circuits and methods for measuring a working current of a circuit module. An exemplary circuit for measuring a working current of a circuit module includes a capacitor. The capacitor supplies a voltage to the circuit module using a voltage on the two terminals of the capacitor. The circuit also includes a voltage measuring module. The voltage measuring module measures a voltage change amount on the two terminals of the capacitor in an unit time. The working current of the circuit module is determined by the circuit according to the voltage change amount on the two terminals of the capacitor in the unit time and a capacitance of the capacitor.

Abstract: Systems and methods are provided for processing map data. The systems and methods calculate road curvature data for a curved road segment along a road based on measured data obtained from a measuring unit of a vehicle moving along the road. The systems and methods perform a map processing function on road map data for the road including the curved road segment based on the calculated road curvature data correlated with the global positioning data. The systems and methods include outputting result data resulting from the map processing function.

Abstract: A method and apparatus for detecting a road layer position are provided. The method includes reading sensor information including at least one from among global navigation system (GNS) information, image sensor information, ambient light information and inertial measurement sensor information, and determining a road layer position of a vehicle from among a plurality of road layers corresponding to a location of the vehicle based on the sensor information.

Abstract: Methods and apparatus are provided for navigation of a vehicle. In one embodiment, a navigation system includes: a map database, and a navigation processor. The map database includes a map layer of autonomous road data, and at least one other layer of map data. The navigation processor is configured to determine a route for a vehicle to a destination preferring use of autonomous roads according to a setting for preferring use of autonomous roads and based on the map layer of autonomous road data and the at least other layer of map data; and display a display map for a vehicle through a navigation display unit including highlighting autonomous roads on the navigation display unit, based on the map layer of autonomous road data, together with the at least one other layer of map data.

Abstract: Methods and apparatus are provided for navigation of a vehicle. In one embodiment, a navigation system includes: a map database, and a navigation processor. The map database includes a map layer of autonomous road data, and at least one other layer of map data. The navigation processor is configured to determine a route for a vehicle to a destination preferring use of autonomous roads according to a setting for preferring use of autonomous roads and based on the map layer of autonomous road data and the at least other layer of map data; and display a display map for a vehicle through a navigation display unit including highlighting autonomous roads on the navigation display unit, based on the map layer of autonomous road data, together with the at least one other layer of map data.

Abstract: A bandgap reference circuit and method of using the same are provided. The bandgap reference circuit includes a startup component; an output component; and a bandgap core component coupled there-between. The bandgap core component includes a reference point having a voltage associated with an output signal of the output component. A controller is configured for controlling the bandgap core component and the output component to switch between a low power consumption mode and a normal operation mode based on the voltage at the reference point. When the bandgap core component and the output component operate in the normal operation mode, the bandgap reference circuit outputs a stable voltage and has a first power consumption. When the bandgap core component and the output component operate in the low power consumption mode, the bandgap reference circuit has a second power consumption less than the first power consumption.

Abstract: A method operates a bandgap voltage reference circuit that includes a bias circuit for receiving a feedback signal and outputting a bias signal, an amplifier for receiving the bias signal and outputting a first reference signal as the feedback signal, an output circuit for receiving the first reference signal and outputting a second reference signal, and an output switch for outputting the second reference signal as an output signal. The method includes, after powering up the bandgap voltage reference circuit, determining whether the output signal is stable, when the output signal is stable, turning off the output switch; turning off the bias circuit; and turning off the output circuit. The sequential turning off the output switch, the output circuit, and the bias circuit puts the bandgap voltage reference circuit into a sleep mode to save power.

Abstract: A system for determining and executing an autonomous-vehicle vehicle travel route, including a hardware-based processing unit and a non-transitory computer-readable storage medium. The storage medium includes an input-interface module that, when executed by the hardware-based processing unit, obtains factor data indicating factors relevant to determining a vehicle travel route. The storage medium also includes a route-generation module comprising a route-complexity sub-module. The route-complexity sub-module determines, based on the factor data, route-complexity indexes corresponding to respective optional routes. The route-generation module determines the vehicle travel route based on the route-complexity indexes. The storage in various embodiments includes other sub-modules associated with other elements, such as autonomous-driving safety, comfort, stress, pollution, scenery, or infrastructure-accessibility, for determining and executing an autonomous-driving travel route.

Abstract: An electronic device with standby state includes a MCU, a voltage conversion unit, a screen lock circuit, and a power-saving trigger circuit. The voltage conversion unit is connected to the MCU and is used to convert a power supply voltage to a suitable voltage to power the MCU. The screen lock circuit includes a switch, therein, the screen lock circuit is connected to the MCU and is used to lock or unlock the electronic device in response to an operation on the switch when the electronic device is in a work state. The power-saving trigger circuit is connected to the MCU, the voltage conversion unit, and the screen lock circuit, and is used to disable or enable the voltage conversion unit in response to the operation on the switch when the electronic device is in the standby state.

Abstract: A method for controlling vehicle procession through an intersection includes monitoring movement of a first vehicle through the intersection, and synchronizing movement of a second vehicle following the first vehicle through the intersection to the first vehicle movement through the intersection.

Abstract: A lighting system includes: a rectifier full-wave rectified an AC voltage to generate an output voltage; first and second LED groups connected to each other in series, wherein an input terminal of the first LED group is coupled to the output voltage; first terminals of first and second switches respectively coupled to output terminals of the first and second LED groups; a first resistor having a first terminal connected to the second terminal of the first switch and the second switch and a second terminal connected to a ground voltage; and first and second operational amplifiers having output terminals respectively coupled to control terminals of the first and second switches, and inverting input terminals respectively coupled to the first terminal of the first resistor, and non-inverting input terminals respectively coupled to the first and second reference voltages.

Abstract: A device is taught for measuring and wirelessly transmitting one or more parameters during wellbore operations. The device comprises a torque sub releasably connected to a top drive at a first end and having a second end such that the torque sub rotates with the rotating top drive, one or more sensors for measuring rotational, torque and torsion parameters, a wireless power source and a signal transmitter connected to the one or more sensors for wireless transmission of data collected by the one or more sensors to a computer. Systems and methods are also provided for connecting threaded tubulars for use in a wellbore.

Abstract: A lighting system includes: a rectifier full-wave rectified an AC voltage to generate an output voltage; first and second LED groups connected to each other in series, wherein an input terminal of the first LED group is coupled to the output voltage; first terminals of first and second switches respectively coupled to output terminals of the first and second LED groups; a first resistor having a first terminal connected to the second terminal of the first switch and the second switch and a second terminal connected to a ground voltage; and first and second operational amplifiers having output terminals respectively coupled to control terminals of the first and second switches, and inverting input terminals respectively coupled to the first terminal of the first resistor, and non-inverting input terminals respectively coupled to the first and second reference voltages.

Abstract: Embodiments of the disclosure disclose a method for sending information and a gateway. The method includes that: a gateway acquires user online information; the gateway monitors a Domain Name System (DNS) domain name inquiring message, forges a DNS server returning domain name parsing response, and sends the forged response to a core network element or a user terminal browser; the gateway receives a user HyperText Transfer Protocol (HTTP) request returned by the core network element or the user terminal browser; and the gateway inquires the user online information according to the user HTTP request, adds the user online information in the user HTTP request by taking the user online information as HTTP header information, and sends the user HTTP request including the HTTP header information to an internet content and service provider.

Abstract: An electronic device capable of audio files with different formats includes a power supply, a switching circuit, an audio control module, an audio output module, and a detecting module. The power supply supplies a first voltage and a second voltage. The detecting module detects whether the format of the audio file is changed. The detecting module generates a first detecting signal within a first predetermined time period from a point in time when the format of the audio file is changed time point, and the switching circuit transmits the first voltage to the audio control module in response to the first detecting signal. The audio control module receives the second voltage and generates a first signal based on the first voltage and the second voltage. The audio output module is disabled from outputting audio signal of the audio file.

Abstract: A method and system are provided for planning a route for a vehicle from a starting point to a destination. The method includes the steps of generating a plurality of routes based on a non-safety factor; evaluating the plurality of routes based on a safety factor; selecting a first route from the plurality of routes based on the safety factor; generating driving instructions based on the first route; displaying the first route on a display device.

Abstract: A system and method for classifying the optimization of safety features on a vehicle for a driver of the vehicle based on the height and mass of the driver. The method includes determining a number of basic driver sizes based on driver height and mass and determining a driver's seat position for each basic driver height. The method also identifies a set of tunable design variables that are used to adjust the safety features of the vehicle and performs design optimization analysis to identify an optimal design for the vehicle safety features for each of the basic driver sizes. The method then identifies the design from the optimal designs that provides the best performance for randomly selected reference drivers and classifies all drivers into a predetermined number of classifications where each classification represents a particular optimal design.

Abstract: An electronic device includes a main body, a cover, a pivot mechanism, a main circuit board received in the main body, and a sub-circuit board received in the cover. The pivot mechanism is conductive, the main circuit board comprises a grounded first conductive layer, the sub-circuit board comprise a grounded second conductive layer, the first conductive layer is connected to the second conductive layer.

Abstract: An electronic device receives a voltage from a power supply. The electronic device includes a load, a first adjusting module, a switching module, a delay module, and a second adjusting module. The first adjusting module produces a working voltage when the electronic device is powered on. The switching module establishes an electrical connection between the first adjusting module and the load when receiving the working voltage, and cuts off the electrical connection when not receiving the working voltage. The delay module delays outputting the working voltage to the load for a first predetermined time period on power on, and maintains a power supply to the load for a second predetermined time period after power off. Both the first predetermined time period and the second predetermined time period are independently adjustable.