Development of Remote Sewage Monitor System

A kind of remote sewage monitor system is designed with the ARM as the core controller in order to help our environment supervision department urges the manufacturers together with factories to pollute the environment as little as possible. The system collects sorts of indexes including pH, flow-rate, temperature, hardness, turbidity, salinity, and nitrogen as well as ammonia dissolved in water per unit volume by different sensors, and all the information then are converted into the right signal which will be not only transported to the distant computer via the public telephone net or by the GSM wireless transmission way, but also written into the SD memory-card when the SD memory-card inserted into the SPI connector. The system also can alarm when it finds data exceeds the national standard by sending messages. Practical run shows the system is well realized the function of remote data transmission, exceeding-standard-alarming, and data storage. The precision of system is accordance with the requirement of the environment supervision department.