Method and system for remotely monitoring wastewater in manhole of underground drainage network and alerting

A sewer monitoring system for monitoring a sewer manhole from a remote location, the sewage monitoring system comprising a processor and a memory communicatively coupled to the processor, wherein the memory stores the processor-executable instructions, which, on execution, causes the processor to:

• receive measured values from a level sensor communicatively connected to the sewer monitoring system;
• determine an accuracy error in the measured values received from the level sensor, caused due to one or more conditions, wherein the one or more conditions pertain to an occurrence of one or more obstacles between the level sensor and the level of wastewater in the sewer manhole during level measurement;
• resolve the accuracy error in the measured values received from the level sensor to obtain accurate measured values by:
• measuring a level of wastewater in the sewer manhole by setting a first range limit for the measured values, of the level sensor dynamically based on an actual depth of the sewer manhole, each time the level sensor is enabled for measuring the level of wastewater in the sewer manhole and
• iteratively measuring the level of the wastewater in the sewer manhole by setting a unique second range limit for the measured values of the level sensor dynamically, using the actual depth of the sewer manhole as maximum value of the unique second range limit and a measured value of the level sensor of a previous iteration as a current minimum value of the unique second range limit, for each iteration, until the measured value of the level sensor of a current:
• iteration fans to exceed the current minimum value, wherein the measured values of the level sensor of the previous iteration correspond to detection of the one or more obstacles in the sewer manhole;
• and
• determine a risk associated with the sewer manhole based on the accurate measured values of the level sensor, for monitoring the sewer manhole from a remote location.

A non-transitory computer readable medium including instructions stored thereon that when processed by at least one processor causes a sewer monitoring system to perform operations comprising:

• receiving measured values from a level sensor communicatively connected to the sewer monitoring system;
• determining an accuracy error in the measured values received from the level sensor, one or more conditions, wherein the one or more conditions pertain to an occurrence of one or more obstacles between the level sensor and a level of wastewater in the sewer manhole during level measurement;
• resolving the accuracy error in the measured values received from the level sensor to obtain accurate measured values by:
• measuring a level of wastewater in the sewer manhole by setting a first range limit for the measured values of the level sensor dynamically based on an actual depth of the sewer manhole, each time the level sensor is enabled for measuring the level of wastewater in the sewer manhole and
• iteratively measuring the level of the wastewater in the sewer manhole by setting a unique second range limit for the measured values of the level sensor dynamically, using the actual depth of the sewer manhole as maximum value of the unique second range limit and a measured value of the level sensor of a previous iteration as a current minimum value of the unique second range limit, for each iteration, until the measured value of the level sensor of a current iteration fails to exceed the current minimum value, wherein the measured values of the level sensor of the previous iteration correspond to detection of the one or more obstacles in the sewer manhole;
• and
• determining a risk associated with the sewer manhole based on the accurate measured values of the level sensor, for monitoring the sewer manhole from a remote location.