The topic of the principles and requirements of GMS technical level detection system for a certain understanding, combined with a given design requirements, design a GSM SMS module to complete a level detection system. Object detection system for liquid level, when the water level is below or above a given set level, the level sensor is detected, the information will be processed by the microcontroller and by GSM SMS module, send the information to the user s mobile phone. (2) The design of graduation requirements: 1, the system prompts with LCD information and displays the level of information, and there is a keyboard as an input device 2, the level of alarm value upper and lower limits can be set via the keyboard 3, when the upper or lower limit exceeds the set alarm level, the system will send text messages to mobile phone users. 4, the message content must be appropriate message, such as the level exceeds the upper limit or below the lower limit, the level information.

GSM.doc

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