32results about How to "Save ports" patented technology

A method and a device for optical switching are disclosed. The method includes: receiving input optical signals; switching the input optical signals to an optical grouping unit when the input optical signals need to be grouped, and then receiving grouped optical signals; and switching the grouped optical signals to corresponding output ports for outputting. The device includes an optical switching unit and an optical grouping unit. A part of output ports of the optical switching unit are connected to input ports of the optical grouping unit, and output ports of the optical grouping unit are connected to input ports of the optical switching unit. The optical switching unit is configured to control transmission paths of the optical signals, and the optical grouping unit is configured to group the optical signals.

The invention discloses a conveying mechanism realizing an adjustable material conveying function. The conveying mechanism comprises a main frame body, transmission rollers are arranged on front portions and rear portions of two side plates of the main frame body, and connecting shaft parts at two ends of the transmission rollers are hinged to the two side plates through bearings. Materials on a conveying belt can be concentrated and delivered out in a concentrated mode through two side guide plates after entering from a large-width connector, thus an end opening of the delivering-out end becomes small, and the conveying mechanism is suitable for material receiving of a small-width material receiving opening.

The present invention relates to a link aggregation system of a switch, which includes a switch, a controller and a server that establish a communication connection with each other, wherein the switch is used to receive a data packet from the server; generate data forwarding information corresponding to the data packet; send the data packet The corresponding data forwarding information is sent to the controller; the controller is used to store the data forwarding information corresponding to the multiple data packets sent by the switch; according to the data forwarding information corresponding to the multiple data packets, confirm that at least two switch ports of the switch conform to the chain road aggregation condition; sending the first indication information to the switch; the switch is configured to configure a logical port according to the first indication information; receiving the first subsequent data packet, and sending the first subsequent data packet through the logical port. This system simplifies the configuration process of link aggregation.

The invention discloses an alternating current sampling device, which comprises: an alternating current voltage sampling circuit for sampling the voltage of the alternating current to obtain a low-voltage alternating current sampling voltage; a rectification circuit for rectifying the alternating current to convert the alternating voltage into a voltage A constant DC voltage; a DC voltage sampling circuit used to sample the DC voltage converted from the AC voltage to obtain a DC sampling voltage; a comparator whose inverting input terminal is grounded, and whose non-inverting input terminal is connected to the AC voltage sampling circuit For the output AC sampling voltage, the power supply terminal is connected to the DC sampling voltage output by the DC voltage sampling circuit, and the output terminal is used to output the sampling signal including the AC voltage amplitude information and the zero-crossing signal. By adopting the technical scheme of the invention, the amplitude information of the alternating current and the zero-crossing signal can be integrated into one signal.

The invention discloses a precise voice control sensor integrated control device. A charge control / output protection and output compensation controller is used for detecting voltage of a signal output end, detecting gate charge of an MOS (metal oxide semiconductor) transistor M1 and gate charge of an MOS transistor M2 and detecting voltage of a signal input end, signal output is compensated through an intelligent linear switch, and voltage of signal output is enabled to be within a set voltage range; or output is enabled to be zero or a switch K1 and / or a switch K2 is closed. The precise voice control sensor integrated control device has extremely high noise resistance, extremely wide voice rang, tiny distortion, extremely small size and extremely few ports; full-domain signal input is adopted, the variable-frequency intelligent linear switch is introduced in, the innovative charge algorithm control technique is adopted for charge control, output protection and output compensation control, further diodes, resistors and JFETs (junction field-effect transistors) adopted by the device are all special semiconductor processes, integration of a system is optimized fundamentally, and tiny size can be realized.

The invention provides a driving circuit of a stepping motor. A control signal for switching a reference voltage for setting the current of the stepping motor is prevented from being generated by an external device. The driving circuit of the stepping motor is internally provided with a shift register (14), a resetting circuit (16) and a switching element (18), wherein the shift register (14) receives a transmitter clock signal (A), shifts according to the transmitter clock signal (A) and outputs a gate signal (J) a set time later after resetting; the resetting circuit (16) outputs a resetting signal (D) for resetting the shift register (14) after receiving an input stepping signal (B) for driving the stepping motor; and the switching element (18) receives the gate signal (J) of the shift register (14) and switches a cut-off state and a on-state.

The invention relates to a battery module monomer voltage acquisition system based on traversal binary tree, which belongs to the field of monomer battery voltage acquisition. It is suitable for battery modules in series, including controller, switch selection unit, buck-boost module and LED light display module. The controller outputs the output signals of switch selection control terminals in different combinations to the switch selection unit, which is selected by the switch selection unit. The voltage of the corresponding single battery is collected, and the collected signal is adjusted to an appropriate range through the buck-boost module and output to the controller. The controller measures the voltage of the single battery, and the real-time detected single battery can be displayed according to the LED light The combination of bright and dark LED lights in the module can be seen. The invention saves the ports of the controller, overcomes the influence of the common mode voltage, and at the same time, there is electrical isolation between each module, which has strong anti-interference ability and wide application range.

The invention provides a buck-boost switching power supply and a controller thereof. The controller comprises a transconductance error amplifier, an on time control circuit, a peak current detection circuit, an on time limit circuit and a logic circuit. An input end of the transconductance error amplifier receives externally input sample voltage and subjects the voltage with preset reference voltage to transconductance error amplification. An output end of the transconductance error amplifier is connected with a compensation port, and an external compensation capacitor is configured to the compensation port. The on time control circuit determines on-time of a power switch according to the voltage of the compensation port. The peak current detection circuit acquires the value of current flowing through the power switch in a previous power switching period according to the sample voltage. The on time limit circuit determines a maximum on-time limit of the power switch in one or a plurality of follow-up power switching periods according to signals output by the peak current detection circuit. The logic circuit generates drive signals to control on and off of the power switch according to the one-time and the maximum on-time limit. As the circuit structure is simplified, smaller package is available and cost can be lowered.

The invention discloses a food processing machine, comprising a main control circuit board and a slave control circuit board, the main control circuit board communicates with the slave control circuit board, a power supply module is arranged on the main control circuit board, the The first DC power supply of the output voltage V1 of the power supply module, the first DC power supply is electrically connected to the slave control circuit board through a power supply line, and it is characterized in that the slave control circuit board is provided with a slave control constant current load, the power supply line is electrically connected to the slave control constant current load, the slave control chip outputs a slave control communication signal to act on the slave control constant current load, and the main control circuit board is provided with a first resistor, The power supply line is electrically connected to the first DC power supply through a first resistor, and the power supply line is electrically connected to the main control chip through a first voltage comparator. Through the characteristics of the constant current load, the communication signal on the slave control circuit board is current-modulated to complete the corresponding carrier transmission, effectively transmit the data signal, and save resources.

The invention discloses an electrode array nonpolar constant current electrical stimulation circuit, which is characterized in that the circuit comprises an H bridge circuit module, a high-voltage generation module, a power supply control module, a microcontroller and an electrode array. Through the H bridge circuit formed by photoelectric silicon controlled rectifiers, isolation of a low-voltage circuit and a high-voltage circuit can be realized conveniently; through an electrode switching switch formed by photoelectric bidirectional silicon controlled rectifiers, control of isolation of the low-voltage circuit and the high-voltage circuit is realized conveniently, and the bidirectional silicon controlled rectifiers can enable a nonpolar stimulation current to be loaded to a human body; through the combination of one electrode and two switches, any group of electrode can be selected and powered up, thereby providing rich stimulation sites and stimulation modes; only one wire is needed for connecting each electrode in array electrodes with the circuit, thereby simplifying electrode connection mode and facilitating expanding more electrodes; and control of the photoelectric bidirectional silicon controlled rectifiers is realized by a serial-to-parallel data chip 74HC595, thereby saving ports of a microcontroller and facilitating expanding.