Furniture office lock--principle
1 The basic principle of intelligent monitor The block diagram of intelligent monitor consists of single chip, clock, keyboard, LCD display, memory, demodulator, line multiplexing and monitoring, A/D conversion, buzzer and other units. . Mainly complete the communication with the electronic lock, intelligent analysis and security monitoring of communication lines.
The intelligent monitor is always in the receiving state and receives the alarm information and status information from the electronic lock in a fixed format. For the alarm information, the sound and light alarms are immediately sent through the LCD display and the buzzer; for the status information, it is stored in the memory and compared with the historical state of the electronic lock before this time, and the trend is changed to predict the future. The status changes, and the corresponding information is provided to the duty officer through the LCD display for decision making. While the intelligent monitor establishes communication with the electronic lock, the A/D converter monitors the change of the supply current flowing through the communication line in real time, effectively preventing the damage caused by human factors and ensuring the smooth communication line.
2 The basic principle of electronic locks The block diagram of the electronic locks is also based on the 51 series single-chip microcomputer (AT89051) with the corresponding hardware circuit to complete the setting, storage, identification and display of the password, drive the electromagnetic actuator and detect its drive current. Value, receiving alarm signals from the sensor, sending data, etc.
The MCU receives the entered code and compares it with the password stored in the EEPROM. If the password is correct, the electromagnetic actuator is unlocked; if the password is incorrect, the operator is allowed to re-enter the password, up to three times; if three times If it is not correct, the MCU will alarm the intelligent monitor through the communication line. The single-chip microcomputer sends the unlocking operation and the driving current value of the electromagnetic actuator as the status information to the intelligent monitor at this time, and also sends the alarm information received from the sensor interface to the intelligent monitor as the basis of the intelligent analysis.
Electric Welding machines and welding torches have the same function and are even more popular than the gas products. This Welding Equipment is commonly found in fields like building construction, industrial maintenance, vessel manufacturing, all kinds of metal-based artwork, and of course DIY welding work.
Electric welding is also called welding rod arc. A welding operation that uses electrodes to weld metal parts at high temperatures by arcing.
The basic working principle of electric welding is commonly used by 220V voltage or 380V industrial electricity, through the pressure relief device for electric Welding Machine in lower voltage, enhances the current, and the electricity generated huge arc heat to melt welding rod and steel electrode melting and fusion between the iron and steel more. The outer skin of the electrode and the CO2 welding release CO2 gas to prevent the oxidation of the metal after melting.
Popular electric welding tools are like: Portable Welding Machine, welding electrode, Mig Torch , Plasma Cutting Torch, Gouging Torch , welding wire, Cable Connector , Electrode Dryer , Earth Clamp , Electrode Holder , Welding Helmet , welding cable, etc.
Electric Welding
Electric Welding,Welding Machine,Plasma Cutting Torch,Carbon Steel Electrode
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