Physical insulation and intelligent data analysis safety technology have reshaped the safety standards of wall sockets, making it possible to avoid accidents in daily life. Only when there is no electric shock in the event of an accident, such a wall socket can truly be called a safe wall socket." No electric shock and enough safety" should become the safety standard for wall sockets.
Intelligent physical insulated wall sockets can basically ensure the overall safety of electricity according to the standard of no electric shock when used wet or dry. However, under the protection of the bottom layer of physical insulation, Blue Aosheng believes that intelligent early warning and protection are the core to fundamentally eliminate this kind of The root of the security problem. The safety protection technology of electric wall sockets can analyze and provide early warning of potential dangers, which can prevent safety problems in advance. It is mainly aimed at solving transient anomalies during the process of connecting and disconnecting (that is, plugging and unplugging) electric loads from electric wall sockets. Monitoring and security protection issues. This technology involves the field of Internet of Things intelligent hardware equipment and measurement and control technology, especially the technical field of power signal monitoring and power safety monitoring.
As a distributed power connection node, the power wall socket needs to perform frequent plugging and unplugging operations when the power load equipment is connected in and out. This is not only for the management of dynamic association and binding relationships, but also for the safety of power consumption. All are very important links. The electric wall socket serves as a power monitoring node to monitor the power consumption period and power status of the electrical equipment, and can monitor safety warnings and protections according to the plan; the system can perform online statistics based on real-time monitoring data and segmented recording data to provide users with Provide online visual monitoring and information services based on management decision-making for improving the overall efficiency of power consumption.
The safety protection technology of electric wall sockets provides status analysis and early warning of potential dangers. The main daily abnormal safety monitoring is: transient overload protection, power-down instant data protection, etc., as follows:
1. Transient current, power, temperature monitoring, overload protection
The safety protection function of monitoring current, power, and temperature is to provide early warning and leakage protection for leakage accidents, provide backup protection against electric shock under certain conditions, and reduce the economic losses and economic losses caused by frequent tripping of leakage switches caused by sudden changes in leakage points. The impact of power outages. Its characteristics are to provide continuous real-time monitoring and control of the insulation and leakage conditions of system lines and equipment, use high-tech means to improve safety management levels, remote monitoring, leakage protection without tripping, advance prediction, early warning and pre-inspection, and reasonably reduce safety Accidents happen.
2. Data protection at the moment of power failure (power, relay status, upload frequency, parameter setting, etc.)
In the power control system, when the power supply is suddenly disconnected, key data need to be protected. If not saved, the accuracy of the power control system needs to be calibrated. We need to provide a period of time for the system to save important data after the system power is disconnected, so that it can continue to be used normally after booting.
We need to continue to provide stable voltage to the circuit after the power is turned off, and maintain a certain period of time for the main control to save important data to non-volatile memories such as EEPROM and Flash. Its core components are capacitors and other devices. The characteristics of Farad capacitors are more suitable for use in this scenario. Capacitors store a small amount of electric energy during normal use in smart metering loop systems, and supply power to the circuit in the event of a sudden external power outage to achieve interruption. Write important data after power-on.
The power-down protection is linked with the system reset to realize highly reliable power-down protection and improve the reliability of the single-chip microcomputer system. An application system of single-chip microcomputer with power-down protection designed with microprocessor supervisory circuit is given. It can usually be implemented using E2PROM, FLASHMEMORY and non-volatile chips with built-in batteries based on random access memory. The power-down protection system consists of low-power CMOS-RAM, power supply circuit and control circuit. The power supply circuit ensures that the RAM is powered by the power supply when the system is normal, and automatically switches to the backup battery to power the RAM when the system is powered off; the control circuit ensures that the RAM can be read and written normally when the power supply is powered, and that the RAM is in a protected state when the battery is powered, especially to prevent the system from being powered on. / The momentary interference during the power-down process causes writing to the RAM chip and changes the RAM.
3. Plug and pull protection
Plug and unplug protection is a way for the system to store relevant data after a power outage. The data collected or generated during system operation are often required not to be lost when the power is turned off and plugged in and out. The system can be restored to its original state after repowering. working status. Real-time status Online status view Running status monitoring Power consumption Real-time monitoring control command timing, real-time switch query Relay status upload time interval setting Real-time status Online status view Running status monitoring Power consumption Real-time monitoring Control command timing, real-time switch query Relay status upload time interval setting 2021 September homepage displays device status, views power statistics, visualizes charts, device list, batches query of device information, and manages custom filtering and sorting.
The specific implementation principle is to use power detection as the startup center of the plug-in protection strategy, and the freewheeling module (energy storage unit) and solid-state electronic disk module main controller (embedded high-performance CPU) as the hardware platform. The firmware of the main controller is based on the FPGA embedded PowerPC soft core platform to control the storage of NandFlash data. Through power detection and monitoring, the voltage or current of the system power supply generates a physical excitation signal, switches the power supply of the entire solid-state electronic disk module to the freewheeling module, and at the same time starts the main controller to dynamically adjust the NandFlash read and write strategy to ensure that the power supply can be maximized at the moment of power outage. Protect the integrity and consistency of the file system of the storage unit of the solid-state electronic disk module. The test results show that the application scheme has high reliability.
The safety protection technology of LAAO acoustic electric wall socket (safety metering wall socket technology)
The technical problem to be solved by this technology is that when the power supply port of the electric wall socket is not connected to the electric load, it maintains a safe protection state for the electric load access, so as to improve the transient state of the electric load object when it is connected. security; when it is detected that a load object is connected, it is verified whether the load connection status meets the security matching conditions, which not only improves the security of the load object during the transient state, but also determines the operating process of the load object according to the characteristics of the load object. and status for power monitoring, abnormal response processing and safety protection, which has better pertinence and suitability. Its purpose is to use a mechanism to ensure the certainty of the system's operating status and the integrity of the recorded data when the system accidentally loses power supply. When the system power supply is restored, the on-site data can be restored in time to avoid application system problems. Chaos, and the data saved at the same time can provide technical personnel with analytical data and provide a good basis for analyzing products.