Abstract: A data converter, a signal transmission method, and a signal transmission system for transmitting a signal to a programmable logic controller are provided. The data converter: performs sampling multiple times with respect to data detected by a sensor in one communication period of communication with a programmable logic controller; acquires statistical data by statisticizing a plurality of sampling data in the one communication period; and transmits the statistical data to the programmable logic controller when the one communication period is reached. Therefore, a signal sampling density is improved, and thus control accuracy can be enhanced. At the same time, a data transmission amount of a bus is reduced, a load on the programmable logic controller is reduced, and user convenience is improved.

Abstract: The present disclosure discloses a resistivity measurement method, device and system. The method comprises: placing a core to be measured into the core holder after a 100% saturated water treatment, and injecting a predetermined confining pressure by the confining pressure pump; turning on the displacement source to carry out a displacement, and at an interval of a predetermined time period, acquiring a current value by the ammeter and a voltage value by the voltmeter; determining a resistivity of the core according to the current value, the voltage value, an arc length of the curved electrode, and a radius and a length of the core. The present disclosure can realize a rock resistivity measurement in a vertical direction under formation conditions for a plunger-type core, without needing to change the core preparation technology or method.

Abstract: A data converter, a signal transmission method, and a signal transmission system for transmitting a signal to a programmable logic controller are provided. The data converter: performs sampling multiple times with respect to data detected by a sensor in one communication period of communication with a programmable logic controller; acquires statistical data by statisticizing a plurality of sampling data in the communication period; and transmits the statistical data to the programmable logic controller when the communication period is reached. On the basis of an embodiment of the present invention, a signal sampling density is improved, and thus control accuracy can be enhanced. At the same time, a data transmission amount of a bus is reduced, a load on the programmable logic controller is reduced, and user convenience is improved.

Abstract: The embodiments of the disclosure provide a monitoring method, a monitoring module, and a mobile terminal for monitoring a programmable logic controller (PLC) connected with one or more monitor targets. The mobile terminal is connected with the PLC, receives selection information input by a user for selecting a target component for the monitor target from a target component list, determines the target component based on the selection information, and associates the target component and the corresponding monitor target based on first input information input by the user. In an aspect, the mobile terminal receives data about the monitor target transmitted by the PLC, and the corresponding monitor target displays a status of the monitor target based on the data. In another aspect, the user is able to control the PLC through the mobile terminal.

Abstract: DNA amplification methods using primers obtained from the genes hyvI and hyvII from the Candidatus Liberibacter asiaticus genome are useful for detecting Ca. L. species in plants and insect hosts.

Abstract: DNA amplification methods using novel primers obtained from the novel genes for hyvI and hyvII s from the Candidatus Liberibacter asiaticus genome and useful for detecting Ca. L. species in plants and insect hosts.

Abstract: A method for processing information and an electronic device are provided. The method includes: obtaining parameter information of an operator located in the front of a mirror display screen by using an image acquisition apparatus; calculating a first digital image matching with a virtual image of the operator based on the parameter information by using a predetermined algorithm; and determining a first instruction corresponding to a first input operation performed by the operator.

Abstract: It is provided with an information processing method and device. The method is applied to a first electronic device with a first displaying unit. The method comprises: establishing a video transmitting channel between the first electronic device and a second electronic device; collecting local 3D image data in a designated space of the first electronic device; determining a first position of the user at the first electronic device in the designated space at the current moment based on the local 3D images; receiving source 3D image data transmitted by the second electronic device via the video transmitting channel; obtaining to-be-displayed images corresponding to the first position from source 3D images corresponding to the source 3D image data; and displaying the to-be-displayed images in a displaying area of the first displaying unit.

Abstract: DNA amplification methods using novel primers obtained from the novel genes for hyvI and hyvII s from the Candidatus Liberibacter asiaticus genome and useful for detecting Ca. L. species in plants and insect hosts.

Abstract: A method and system for protecting integrated optoelectronic devices are disclosed. The method includes (1) providing standby light source links of fixed wavelength and their corresponding standby data channel in a transmitting-end integrated optoelectronic device; (2) detecting whether there is failure in each active light source link in the transmitting-end integrated optoelectronic device; and (3) selecting a standby light source link having a fixed wavelength and its corresponding standby data channel for accomplishing service transmission of failed active light source link and its corresponding active data channel when detecting failure of an active light source link. The system includes a transmitting-end integrated optoelectronic device and a receiving-end integrated optoelectronic device.

Abstract: A power converting device converts a DC voltage input from an external power source into an AC voltage output across an output capacitor of an output circuit, and includes a coupling circuit having series first and second windings. A rectifying diode has a grounded anode coupled to an anode of a clamp diode, and a cathode coupled to the second winding. A cathode of the clamp diode is coupled to a clamp switch and the first winding. A full-bridge circuit includes a first series connection of first and second switches, and a second series connection of third and fourth switches. The first and second series connections are coupled in parallel between the first winding and ground. The output capacitor is coupled between a first common node between the first and second switches, and a second common node between the third and fourth switches.

Abstract: Disclosed is a vehicle-used power supply system. The vehicle power supply system comprises a storage unit, a bidirectional dc/dc convertor, a dc bus, a controller and a driving module. The bidirectional dc/dc convertor is configured to boost the power stored in the storage unit to a dc bus power. The controller is configured to control the bidirectional dc/dc convertor to operate in a boost mode for driving the motor or in a buck mode for charging the storage unit. The driving module is configured to receive the dc bus power and drive the motor.

Abstract: A power converting device is adapted for converting a DC voltage input from an external power source into an AC voltage output. The power converting device includes: a transformer having first and second windings each having opposite first and second ends; a clamp unit coupled to the external power source, and including a first switch coupled between a reference node and the second end of the first winding, and a series connection of a clamp capacitor and a second switch coupled across the first winding; and an inverting unit coupled to the first end of the second winding, and operable so as to output the AC voltage output based on an induced voltage across the second winding.

Abstract: An optoelectronic integrated apparatus, including a plurality of working optical source links, at least one spare optical source link, at least one spare data channel, and a protection control unit for detecting whether there is any working optical source link faulty. When detecting that a working optical source link is faulty, controlling a spare optical source link whose emission wavelength is the same as the faulty working optical source link to fulfill the functions of the faulty working optical source link and switching a data signal from the working data channel to a spare data channel. The spare optical source link is adapted to modulate the optical signal using the data signal from the spare data channel, and transmits the modulated optical signal. Reliability of the optoelectronic integrated apparatus is enhanced without increasing the maintenance cost.

Abstract: A boost device boosts an input voltage to an output voltage across an output capacitor, and includes first and second output diodes coupled to the output capacitor, and a transformer coupled to first and second switches, first and second switching circuits, and to the first and second output diodes, and receiving the input voltage. The first and second switches are operated alternately in an ON-state, and have overlapping duty cycles. The first and second switching circuits are operable to suppress conduction losses for the first and second switches. The transformer has a bi-directional magnetic circuit. Electric energy is transformed through induced currents of the transformer, and a small amount of energy attributed to an exciting current of the transformer is used for voltage boosting, thereby attaining a relatively high output power.

Abstract: A bidirectional power converting device coupled between first and second power storage units includes: a coupling circuit including a first winding coupled to the first power storage unit, and a second winding coupled in series to the first winding; first and second switches coupled to the first winding; a capacitor coupled between the first and second switches; a third switch coupled between the second winding and the capacitor; and a fourth switch between the second winding and the second power storage unit. The first, second, third and fourth switches are operable so that an input voltage supplied by one of the first and second power storage units is converted into an output voltage that is to be supplied to the other one of the first and second power storage units.

Abstract: A boost device boosts an input voltage to an output voltage across an output capacitor, and includes an output diode coupled to the output capacitor, and a transformer coupled to a first switch, a clamp circuit and a boost circuit. The clamp circuit is coupled across a first winding of the transformer, and includes a clamp capacitor coupled in series to a second switch. The output capacitor is capable of being charged through the output diode with an induced voltage across a second winding of the transformer. The boost circuit is capable of being charged with the induced voltage across the second winding, and of charging the output capacitor so as to boost the output voltage across the output capacitor.

Abstract: A power converting device is adapted for converting a DC voltage input from an external power source into an AC voltage output. The power converting device includes: a transformer having first and second windings each having opposite first and second ends; a clamp unit coupled to the external power source, and including a first switch coupled between a reference node and the second end of the first winding, and a series connection of a clamp capacitor and a second switch coupled across the first winding; and an inverting unit coupled to the first end of the second winding, and operable so as to output the AC voltage output based on an induced voltage across the second winding.

Abstract: A power converting device converts a DC voltage input from an external power source into an AC voltage output across an output capacitor of an output circuit, and includes a coupling circuit having series first and second windings. A rectifying diode has a grounded anode coupled to an anode of a clamp diode, and a cathode coupled to the second winding. A cathode of the clamp diode is coupled to a clamp switch and the first winding. A full-bridge circuit includes a first series connection of first and second switches, and a second series connection of third and fourth switches. The first and second series connections are coupled in parallel between the first winding and ground. The output capacitor is coupled between a first common node between the first and second switches, and a second common node between the third and fourth switches.

Abstract: A bidirectional power converting device coupled between first and second power storage units includes: a coupling circuit including a first winding coupled to the first power storage unit, and a second winding coupled in series to the first winding; first and second switches coupled to the first winding; a capacitor coupled between the first and second switches; a third switch coupled between the second winding and the capacitor; and a fourth switch between the second winding and the second power storage unit. The first, second, third and fourth switches are operable so that an input voltage supplied by one of the first and second power storage units is converted into an output voltage that is to be supplied to the other one of the first and second power storage units.