9 results about "Automatic power control" patented technology

The invention relates to a control method and device for a high-temperature gas cooled reactor, and the method comprises the steps: responding to a received power automatic control instruction inputted by a user, and obtaining a power automatic control parameter; and performing rod position control on each control rod in a control rod group of the high-temperature gas cooled reactor based on the automatic power control parameters, and acquiring and displaying at least one parameter of the high-temperature gas cooled reactor in the rod position control process.

The invention relates to the technical field of power system dispatching automation, and discloses an industrial user automatic power control method and device, equipment and a medium. The method comprises the following steps: acquiring static archive data and real-time operation electrical parameters of an industrial user through an automatic power control device, and storing the operation data in a database according to the granularity of 15 minutes; the static file data at least comprises total adjustable capacity, adjustable capacity upper and lower limits and rated capacity; when no production plan exists, similar days are selected according to historical data, and a load curve of 96 points in the next day is predicted by adopting a preset algorithm; calculating the up-regulation capability and the down-regulation capability of 96 time points in the next day in combination with the predicted load data and resource model parameters; the resource model parameters comprise rated capacity and adjustable upper and lower limits; the regulation capability is uploaded to a power grid regulation and control platform, and a plant plan curve generated by the platform is received; and based on the plant plan curve, target power of 96 points is decomposed, and equipment in the plant is controlled according to the decomposed target power.

This invention discloses a dual-beam laser diode driving circuit based on the RN5C711, suitable for laser printers and digital copiers. The circuit uses a +5V power supply to power the AVCC, DVCC, and LDV pins of the RN5C711. The two laser diodes are connected to the LD1 and LD2 pins of the RN5C711 respectively, and independent automatic power control is achieved through adjustable resistors. It receives LVDS format data input and has overcurrent and power abnormality protection mechanisms. This circuit solves the problems of insufficient current control accuracy and lack of protection in existing technologies, achieves stable laser intensity output, extends the lifespan of the laser diodes, and is simple in design and easy to debug.

In some examples of the techniques described herein, power control schemes between an interrogator mode and a tag response mode of a reader device may be separated to operate at different power amplifier bias points, which may reduce battery power consumption. In some examples, automatic power control in a physical layer may be implemented to achieve a target range at a reduced battery power consumption. In some approaches, tuning may start at a relatively high (e.g., maximum) transmit power and is gradually converged to a lower power level based on a received signal strength indicator (RSSI) through a binary search or similar procedure to determine the power level. In some of the approaches described herein, tuning may begin at a lower (e.g., median) transmit power level, and may avoid the higher transmit power scenario, which may reduce or avoid heavy battery loading.

The application discloses an optical frequency comb repetition frequency locking device and method based on automatic power control, and relates to the technical field of optical frequency combs. The device comprises an optical frequency comb optical system, a fiber length automatic control system and an automatic power control system. The optical frequency comb optical system is used for generating an optical frequency comb repetition frequency. The fiber length automatic control system locks the optical frequency comb repetition frequency output by the optical frequency comb optical system. The automatic power control system is used for adaptively adjusting the signal power size in the corresponding link when the optical frequency comb light power or the reference source power changes, so that the input power of the local oscillator and the radio frequency port of the mixer is maintained at a predetermined power. The technical scheme of the application improves the stability and accuracy of the input power of the radio frequency and local oscillator ports of the mixer, strengthens the suppression of noise in the link, enables the phase-locked loop of the fiber length automatic control system to be maintained in the best working state for a long time, and improves the practicability of the optical frequency comb product.

In some examples of the techniques described herein, power control schemes between an interrogator mode and a tag response mode of a reader device may be separated to operate at different power amplifier bias points, which may reduce battery power consumption. In some examples, automatic power control in a physical layer may be implemented to achieve a target range at a reduced battery power consumption. In some approaches, tuning may start at a relatively high (e.g., maximum) transmit power and is gradually converged to a lower power level based on a received signal strength indicator (RSSI) through a binary search or similar procedure to determine the power level. In some of the approaches described herein, tuning may begin at a lower (e.g., median) transmit power level, and may avoid the higher transmit power scenario, which may reduce or avoid heavy battery loading.

The invention provides an automatic power control circuit with a constant temperature control function. The automatic power control circuit comprises a variable gain amplifier, a directional coupler, an integrating circuit, a detection circuit and a constant temperature control circuit, the variable gain amplifier amplifies the power of the microwave signal to P1, and outputs the microwave signal of P1 to the directional coupler; the directional coupler outputs a 0.9 P1 microwave signal, and the other 0.1 P1 microwave signal is coupled to the detection circuit; the detection circuit converts 0.1 P1 power of the coupled microwave signal into a direct current level, and outputs a converted level value V0 to the integrating circuit; the constant temperature control circuit automatically controls the temperature of the detection circuit at a preset temperature fixed point in a heating mode; the integrating circuit compares the conversion level value V0 output by the detection circuit with a reference level value V1 input from the outside to control the increase and decrease of the output control level Vt; the control level Vt is used for controlling the gain of the variable gain amplifier; according to the invention, the output signal power in the microwave emission system can be automatically controlled.

The invention provides an automatic power control circuit of an optical communication chip. The automatic power control circuit is coupled to a digital control unit and a DC-DC converter. The automatic power control circuit includes: a digital-to-analog converter coupled to a digital control unit, the digital-to-analog converter receiving a digital code generated by the digital control unit to generate a digital-to-analog converter output voltage; an output buffer circuit coupled to the digital analog converter and the DC-DC converter, the output buffer circuit providing an internal node voltage; and the analog-to-digital converter is coupled to the output buffer circuit and the digital control unit, and the analog-to-digital converter controls a supply voltage output by the DC-DC converter through the digital-to-analog converter, so that a voltage difference between the supply voltage and the internal node voltage is maintained within a normal working range interval.

The utility model relates to the technical field of electric power generation, in particular to an electric heat tracing monitoring system. Comprising a plurality of temperature controllers arranged in an instrument heat preservation box and used for obtaining corresponding instrument conduit temperatures; the data input end of the master control device is in communication connection with each temperature controller, and the control signal output end of the master control device is in communication connection with the electric tracing band working power supply corresponding to each temperature controller. A hardware connection framework of a plurality of temperature controllers and a main control device is arranged, a traditional temperature control mode depending on manual operation is converted into an automatic power supply control mechanism based on a preset temperature threshold value, and independent monitoring and control of each instrument conduit are achieved.