12 results about "Circuit restoration" patented technology

The utility model discloses an overload protection device for a photovoltaic energy storage circuit, and relates to the technical field of overload protection in a power electronic technology and a photovoltaic power generation system, the overload protection device comprises a mounting shell, a main control unit, a current sensor, a driving circuit and a combination switch module, and a shell door is hinged to one side of the mounting shell. The current sensor continuously collects current data in a circuit and transmits the current data to the main control unit, and the main control unit analyzes the received current data, calculates a current actual current value, compares the current actual current value with a preset safety threshold value, and controls each silicon controlled rectifier in the composite switch module to be switched on or switched off. And in the recovery stage, the main control unit continuously monitors the current condition, closes the circuit again after confirming that no abnormity exists, and recovers normal work, so that the response speed of the overload protection device is improved, the circuit can be rapidly cut off when overload occurs, and equipment damage and potential safety hazards are avoided.

The utility model provides a switching circuit, which comprises a short-circuit protection circuit and at least one switching element, the short-circuit protection circuit is connected between a power supply positive electrode and the at least one switching element, and the protection circuit is characterized by comprising a protection switching circuit which is connected with a power supply end of the switching element and the power supply positive electrode; and a peripheral circuit which is connected to the protection switching circuit and the positive electrode of the power supply and generates an operating voltage for turning on the protection switching circuit, and when the protection switching circuit is turned on, the positive electrode of the power supply applies a voltage to the power supply end of the switching element through the protection switching circuit. Therefore, the protection switch circuit can be switched between connection and disconnection, short-circuit protection can be carried out in a non-one-time mode, the circuit can continue to be used, cost is saved, system operation efficiency is improved, a peripheral loop generates working voltage enabling the protection switch circuit to be connected through the positive electrode of the power source, the recovery speed of the protection switch circuit can be increased, and the service life of the protection switch circuit is prolonged. And the circuit structure is simplified.

A first device communicating with a second device through a high-speed serial interface includes an interface controller configured to recover data received via the high-speed serial interface and a component configured to perform a selected operation based on the recovered data, the interface controller including a recovered clock domain circuit configured to operate based on a recovered clock corresponding to a data transmission rate of the high-speed serial interface and a local clock domain circuit configured to operate based on a local clock having a frequency adaptively controlled based on a frequency of the recovered clock.

This invention provides a protection circuit for suppressing transient overshoot, comprising a signal processing module, an adjustment module, and a control module connected in sequence. The input terminal of the signal processing module and the first input terminal of the control module are both connected to a first external signal voltage VS1. The first reference terminal of the adjustment module and the second input terminal of the control module are both connected to an internal signal voltage VS2. The signal processing module is configured to output a first voltage V1 to the adjustment module based on the first external signal voltage VS1 when a power circuit fault occurs, thereby reducing the internal signal voltage VS2. The control module is configured to output a control voltage to shut down the power circuit when the first external signal voltage VS1 is higher than a threshold voltage. The control module is further configured to output a corresponding control voltage to the power circuit based on the first external signal voltage VS1 and the internal signal voltage VS2 when the power circuit returns to normal, thereby reducing transient overshoot during the process of the power circuit recovering from a fault state to a normal state.

The embodiment of the invention provides a fault recovery method, electronic equipment, a storage medium and a program product. Relates to the technical field of radio frequency front-end control. The method comprises the steps that a controller obtains the states of a plurality of first buses, each first bus comprises a plurality of devices, each device comprises a circuit for recognizing a recovery signal, and the recovery signal is a clock signal; the controller determines a second bus of the device with the fault in the plurality of first buses based on the states of the plurality of first buses; the controller sends a recovery signal to the plurality of devices on the second bus, the recovery signal is used for indicating the plurality of devices on the second bus to perform recovery operation, and the plurality of devices on the second bus detect the clock signal sent by the controller according to the circuit; and when the clock signal is detected to be a recovery signal, the plurality of devices on the second bus perform recovery operation. And the fault recovery possibility of the device is improved.

The application relates to an anti-single event upset current latching type sensitive amplifier, which comprises a pre-charging circuit, a 4P unit, a 2P2N unit, a bit line input circuit and an enable tube circuit; the pre-charging circuit is used for stabling the output nodes OUT and OUTN to the same high level through a power supply VDD when a pre-charging signal PRE is at a low level before an SRAM performs a read operation; the bit line input circuit and the enable tube circuit are used for adjusting the voltage of the output nodes OUT and OUTN according to the voltage difference of a bit line signal BL and an inverse bit line signal BLN when the SRAM performs the read operation; the 4P unit and the 2P2N unit are used for restoring the circuit to the original state according to redundant nodes S0 and S1 when a single event upset occurs. The output nodes are kept at the high level in the low level state of the pre-charging signal, the slight voltage change is rapidly amplified during the read operation process, and the reliability and the read precision of the circuit can be ensured.

The utility model provides a power equipment protection control system, and belongs to the technical field of circuit protection. The power equipment protection control system comprises a temperature detection module, a high-temperature protection module, a delay module, a reset module and an overcurrent protection module. The temperature detection module is used for detecting the temperature of the power equipment; the output end of the temperature detection module is connected with the input end of the delay module and the first end of the reset module. The control end of the reset module is connected with the output end of the delay module, and the second end of the reset module is connected with the control end of the high-temperature protection module; two ends of the high-temperature protection module are connected in parallel with two ends of power equipment; the input end of the overcurrent protection module is connected with the power equipment in parallel, and the output end of the overcurrent protection module is used for disconnecting a power supply loop of the power equipment. The circuit can solve the problem that power equipment is easily damaged due to immediate reset after the circuit returns to normal.

This disclosure provides a six-port isolation error amplifier and isolation power supply, including a detection circuit, a pulse width modulation circuit, an encoding / modulation circuit, a coupling transmission circuit, a decoding / demodulation circuit, a recovery circuit, and an open-drain (OD) gate. The detection circuit detects the input voltage and outputs a detection voltage and a detection current positively correlated with the input current. The pulse width modulation circuit generates a first pulse width modulation signal based on the detection voltage. The encoding / modulation circuit converts the first pulse width modulation signal into a transmission signal. The coupling transmission circuit couples and transmits the transmission signal. The decoding / demodulation circuit receives the transmitted coupled signal and recovers the transmitted coupled signal into a second pulse width modulation signal. The recovery circuit recovers the second pulse width modulation signal into a DC voltage positively correlated with the duty cycle of the second pulse width modulation signal. The OD gate converts the DC voltage into an output current positively correlated with the input current. It can replace the optocoupler in the isolation feedback scenario 1:1.

This invention discloses an automated control method for the operating mechanism of a molded case circuit breaker (MCCB), specifically relating to the field of MCB technology. By monitoring electrical parameters in real time and transmitting them to the control system, and performing comparative analysis based on preset thresholds and fault models, the system can promptly detect faults and generate control commands. The system can identify and prioritize multiple fault scenarios, automatically executing closing or opening actions to ensure the reliability and stability of the power system. Furthermore, this invention introduces a judgment mechanism based on circuit recovery status. After the circuit is disconnected, the system rationally determines whether to perform a recovery operation based on the status of the circuit breaker and the recovery status of the power system, effectively improving the self-recovery capability and fault diagnosis capability of the power system. This method can adapt to the effects of high loads, complex environments, and power grid fluctuations, significantly improving the reliability and accuracy of the automated control system.

The invention relates to a control circuit and a control method of an air conditioning unit, based on the control method of the embodiment of the invention, under the condition that the air conditioning unit is powered off abnormally, an upper computer controls a third relay to be closed, and controls a first end in a first relay and a common end in the first relay to be closed; therefore, the power conversion circuit recovers power supply to the main control circuit. And after the power supply of the main control circuit is recovered, the main control circuit controls the second end of the first relay to be connected with the common end of the first relay, so that the power supply of the air conditioning unit is reestablished. Therefore, the problem that in the prior art, under the condition that the air conditioning unit is abnormal, the PTC resistor heats, and consequently a rear-stage circuit cannot be powered on is solved.

The invention provides a TPCM authentication trusted starting method and device based on an X86 platform and a storage medium. The method comprises the following steps of: controlling a switchable interface circuit to be in a first connection state for connecting a flash memory with an SPI (Serial Peripheral Interface) of a TPCM (Transport Pulse Code Modulation) during first power-on; controlling the nuclear power supply circuit to supply power to the central processing unit, and controlling the switchable interface circuit to be switched to a second communication state in which the flash memory is communicated with the SPI interface of the central processing unit; when the system is restarted, the switchable interface circuit is controlled to be kept in a second connection state; in the suspended state, the trigger verification circuit outputs a reset trigger signal to the TPCM again, and controls the switchable interface circuit to be switched to the first connection state; and when the restart verification result represents that the start firmware passes the verification, controlling the switchable interface circuit to recover to the second connection state so as to complete the start control of the system restart process. According to the method, a TPCM authentication starting mechanism can be introduced into an X86 platform, the integrity of a starting chain is improved, and the safety and reliability of the first power-on and restarting process are enhanced.

The application discloses a redundant pruning method for solving the multivalued problem of a bit stream mapping unit of an FPGA device, and relates to the field of hardware security. First, the FPGA bit stream file is parsed, the configuration option set is extracted, and the configuration option set is subjected to module division. Second, the circuit model of each site module is restored according to the logic unit configuration resource, and the network connection relationship between the modules is established. Third, the redundant modules caused by the unit multivalued problem are finely pruned based on the connection between the modules. Specifically, the upstream and downstream connection conditions of the modules and the overall connection relationship of the cascaded modules are judged, and it is ensured that only necessary functional modules are reserved. Finally, the pruned module set and the network connection are output, and the optimized parsing of the FPGA bit stream file is realized. The method effectively solves the redundancy caused by the unit multivalued problem in the FPGA bit stream file parsing process, improves the accuracy and efficiency of circuit restoration, and provides a new technical means for FPGA reverse engineering.