In the field of industrial automation , [color=rgb(68, 68, 68) !important] frequency converters are important equipment for driving motors , and their stability and reliability are directly related to the smooth operation of the production line. However, frequency converters often encounter overload or overcurrent problems during use , which not only affects the normal operation…
Starting a 380V three-phase cage motor is an old problem. It seems that there was an answer decades ago, but it is almost a new problem. Most of the answers now cannot stand the question of why? Or they are not practical. Let me first talk about the existing answers (please add if you haven’t…
Each relay has a name, and generally the normally open point and normally closed point share the same name with the relay. If there are 10 relays, there will be 10 names, as long as each relay and contact is not confused with other relays. Wiring diagram of small solid state relay Small relay wiring…
When lithium-ion batteries (LIB) are used, stored or transported, if they are subjected to external overloads (overcharge or short circuit, vibration, impact, high and low temperature, etc.), the following phenomena may occur: l Thermal runaway l Electrolyte leakage l Internal gas leakage caused by increased internal pressure l Thermal decomposition reaction of electrolyte, etc. The…
Intelligent parking guidance system is a kind of advanced technology, through real-time data analysis and intelligent algorithms, to provide accurate parking information and guidance to car owners, helping to solve the troubles and challenges in the parking process. This article will reveal the black technology of intelligent parking guidance system , introduce its working principle,…
With the acceleration of China’s urbanization process and the significant improvement of people’s quality of life, the intelligent transformation of urban public facilities has become an irreversible trend. Among them, public restrooms, as a basic link in the urban public service system, are intelligent. Upgrading is not only an important symbol of “smart city” construction,…
The pocket RS485 optical modem adopts large-scale FPGA design and supports the fiber optic MODEM of asynchronous RS-485 communication interface. This device is the best choice for connecting the remote terminal unit (RTU) to the host (HOST) or distributed data acquisition system ( SCADA ) controller , with a high performance-price ratio. Using ordinary multi-mode…
Analog isolator is an electronic component used to isolate analog signals between two circuits to prevent interference between circuits. It usually consists of two analog signal converters, which can convert analog signals into digital signals and then convert them back into analog signals to achieve isolation. Signal isolator is a kind of linear optocoupler isolation…
In recent years, with the emergence of new technologies such as natural gas, new energy, and solar energy, the coal market has been in oversupply and sales have been poor. All production mines have experienced coal backlogs to varying degrees in ground coal storage yards or cylindrical coal storage bunkers. Long-term piled coal is exposed…
A rain gauge is a common meteorological instrument used to measure rainfall. It is an important tool for monitoring and forecasting weather, flood control, agriculture, water resource management and other fields. This article will introduce the working principle of a rain gauge and its advantages and disadvantages. 1. Working principle A rain gauge measures rainfall…