5results about How to "Reduce peak power consumption" patented technology

The invention discloses an anti-islanding driving circuit suitable for a distributed photovoltaic grid-connected circuit breaker. The anti-islanding driving circuit comprises a DC-DC power supply circuit, a super-capacitor charging control circuit, a super-capacitor boost discharging circuit, a motor driving circuit, a motor charging linkage circuit and a motor current-limiting protection circuit. The DC-DC power supply circuit converts 12V input voltage into motor target voltage, the super capacitor charging control circuit adopts double NPN triodes and diodes to prevent reverse breakdown, and charging is stopped when the motor is started. The super capacitor boost discharge circuit supplies power to the motor when the main power supply is powered off. The motor driving circuit controls operation of a motor through logic level signals, a sampling resistor monitors input current, and the linkage circuit adopts AND gate logic peak shifting power utilization. And the current-limiting protection circuit realizes overcurrent protection through the current induction amplifier and the control triode. According to the invention, the photovoltaic grid-connected connection can be automatically disconnected, the islanding effect is prevented, and the reliability and the stability are high.

The utility model discloses a main machine of a floor scrubber, which belongs to a floor scrubber device and comprises a scrubbing base and a main machine shell correspondingly buckled on the scrubbing base. The washing base comprises a mounting plate, two floor brush motors are correspondingly arranged at the front end of the mounting plate, the driving ends of the floor brush motors are located at the bottom of the mounting plate and correspondingly connected with floor brushes, the mounting plate is located at the rear ends of the two floor brush assemblies and corresponds to the water scraping plate assembly, and walking wheels are arranged on the two sides of the rear end of the mounting plate correspondingly. The main machine of the scrubber has the advantages of being stable in control, efficient in cleaning, long in endurance and the like. The washing base adopts an integrated design, the mounting plate integrates components such as the floor brush motor, the water pump and the air pump, the assembly process is simplified, and the manufacturing cost is reduced.

This invention belongs to the field of communication technology and discloses a low-power data communication method and system for electricity meters based on a CAT1 module. The electricity meter collects metering data and event data, encapsulates them into data frames with serial numbers, and writes them into a transmission queue. When a queue threshold, alarm threshold, or time threshold is met, a communication session is established, waking up the CAT1 module to send batch uplink data containing a session identifier and batch sequence start and end numbers. The platform returns confirmation information, including a set of confirmed sequence intervals, missing data frame identifiers, and downlink pending transmission identifiers. The terminal retransmits missing frames within the session based on this information, opens a listening window only when a downlink command exists, deletes confirmed frames after the session ends, enters low-power mode, and persists the queue state to support power-off resume transmission.

The invention relates to the technical field of LED constant-current driving, and discloses a high-power-factor and stroboflash-free LED linear constant-current driving chip and circuit. The circuit comprises a voltage attenuation unit, a zero cross detection unit, a pulse voltage generation unit, an adder, a comparator, a pulse delay unit, an RS latch, a first current control unit, a second current control unit, a switch S1, a switch S2, a switch S3, a switch S4, a rectification unit, an energy storage capacitor CAP and a starting resistor RST. During actual use, the charging current of the energy storage capacitor CAP in a starting state is only about 10% of that in a stable state, so that even if the MOS tube Q1 bears all bus voltages VBUS during starting, the peak power consumption of the MOS tube Q1 is greatly attenuated due to low-current work, and the reliability of the control circuit is improved. Once starting is completed and a stable state is entered, the current returns to normal, so that the stable state is not influenced.

This invention discloses a centralized control method and system for hot gas defrosting. Through data acquisition, frost layer prediction and triggering, defrosting execution, and optimization feedback steps, it achieves intelligent and precise control of the defrosting process. The system includes a sensor group, an edge data acquisition module, a local controller, a communication module, a cloud-based centralized control platform, and actuators. This invention employs a fusion prediction model, combining rule-based rapid scoring with machine learning-based accurate prediction to dynamically assess frost risk and trigger defrosting, avoiding the blindness of traditional timed defrosting. Simultaneously, it ensures system stability through grouped sequential control and safety monitoring, and utilizes a cloud platform to aggregate multi-site data for global optimization scheduling and model iteration. This invention effectively reduces defrosting energy consumption, maintains stable storage / cabinet temperatures, and improves the operating efficiency and intelligent management level of the refrigeration system.