HMI is the abbreviation of Human Machine Interface, "Human Machine Interface", also called Human Machine Interface. For example, in a factory, we want to collect the temperature, humidity and the status of the machines in the various areas of the factory to monitor and record these parameters through a main controller, and some unexpected conditions occur Can be dealt with. This is a very typical application of SCADA / HMI.
Generally speaking, the HMI system must have several basic capabilities:
· Real-time data trend display-immediately display the captured data on the screen.
· Automatically record data-automatically store the data in the database for future review.
· Historical data trend display-visually present the data in the database.
· Report generation and printing-can convert the data into a report format and print it out.
· Graphic interface control-the operator can directly control the machine and other devices through the graphic interface.
· Alarm generation and recording-users can define some conditions for alarm generation,
· For example, the temperature is excessive or the pressure exceeds the critical value. Under such conditions, the system will generate an alarm and notify the operator to deal with it.
Solar Street Lights are raised light sources which are controlled by solar powered boards commonly mounted on the lighting structure or coordinated into the shaft itself. The sunlight based boards charge a battery-powered battery, which controls a fluorescent or LED light during the night. There are two types of solar light generally in the lighting market which called all in on solar street light and split solar street light.
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