Low-power-consumption integrated machine based on IOT (Internet of Things) technology and used for online monitoring of underground water

The invention discloses a low-power-consumption integrated machine based on IOT (Internet of Things) technology and used for online monitoring of underground water. The low-power-consumption integrated machine comprises a power supply, a sensor and a main board connected with the power supply and the sensor, wherein circuits on the main board comprise an input power supply circuit and a display input circuit connected with a CPU (central processing unit); an input end of the input power supply circuit is connected with the power supply, an output end of the input power supply circuit is simultaneously connected with one end of a power supply detecting circuit, the CPU and one end of GSM/GPRS (global system for mobile communications/ general packet radio service) module, and the other end of the power supply detecting circuit is connected with the CPU; the GSM/GPRS module is connected with the CPU; and the sensor is connected with the CPU through an interface circuit. According to the integrated machine, one CPU is taken as a data center of the main board, one CPU and multiple circuit interfaces are omitted, and an original clock circuit and a backup circuit are omitted, so that the circuit elements are reduced in a multiplied manner, the size is reduced in a multiplied manner, and power consumption is further is reduced.