Universal monitor and fault detector in fielded generators and method
A method and system for monitoring an engine driven generator system (GMS) is provided herein. The system self-configures across generator types and manufacturers via a learning algorithm. Additional sensors are included in the system to provide a robust set of sensor data. Data analysis employed includes comparison to threshold levels, trending of historical data, and Wavelet analysis. A graphical touch screen is provided to users for both controlling the GMS and for viewing results. Monitoring results include operating conditions, existing faults, and warnings of undesirable conditions. Ethernet connections afford review of real time data, diagnostic feedback, and prognostic information at a central location. A sleep state of the GMS conserves generator battery life.
1. A generator monitoring and fault determination system, the system comprising:
a processing module;
a learning algorithm stored in memory of the processing module and run by the processing module;
original equipment sensors on an engine driven generator system;
original equipment sensors' outputs connected to the processing module, respectively;
additional retrofitted sensors connected to the engine driven generator system;
said additional retrofitted sensors including:
an oil pressure sensor; an intake pressure sensor; an acceleration sensor; a hall effect sensor; an A phase voltage sensor; a B phase voltage sensor; a C phase voltage sensor; a neutral voltage sensor; an A phase current sensor; a B phase current sensor; a C phase current sensor; a neutral current sensor; and an ambient temperature sensor;
respective outputs of said additional retrofitted sensors connected to the processing module;
a vibration output from the additional retrofitted acceleration sensor connected to the processing module;
a power supply board connected to the processing module;
said learning algorithm determining normal operating threshold values of said additional retrofitted sensors respective outputs and of said original equipment sensors' respective outputs;
a wavelet transformation algorithm stored in memory of the processing module; and
wherein a vibration data from the vibration output of the additional retrofitted acceleration sensor is transformed via the wavelet transformation algorithm, and said transformed wavelet is decomposed into frequency bands peak event values; and
wherein the learning algorithm runs the wavelet transformation algorithm in said determining normal operating threshold values, and wherein determined normal operating threshold values include decomposed frequency band peak event values of wavelet transformed vibration data;
a vibration fault indicator,
said indicator set when the determined normal operating threshold values of said additional retrofitted acceleration sensor's vibration data is exceeded by a respective current decomposed wavelet transformed vibration data.
2. The system of claim 1 , further comprising:
a PC-104 card stack in the processing module.
3. The system of claim 1 , further comprising:
an internal wiring harness in the processing module;
an external wiring harness outside the processing module
a hardware interface card connecting the internal wiring harness with the external wiring harness.
4. The system of claim 3 , wherein:
the hardware interface card is located inside an encased processing module, and filters analog signals, amplifies the analog signals, and outputs the filtered and amplified signals to the internal wiring harness.
5. The system of claim 2 , further comprising:
a display module electrically connected to the PC 104 card stack.
6. The generator monitor system of claim 5 , further comprising:
a graphical touchscreen user interface on the display module.
7. The system of claim 3 , wherein:
the display module comprises a readout of a current algorithm analysis.
8. The generator monitor system of claim 5 , further comprising:
software defined touchscreen buttons on the display module providing navigation between systems being monitored.
9. The system of claim 1 , wherein:
the processing module enters a sleep state when the engine driven generator powers down.
10. The system of claim 1 , further comprising:
an Ethernet connection for input and output to the processing module.
11. The system of claim 1 , further comprising:
the additional retrofitted sensors include:
an engine oil pressure sensor;
an engine coolant temperature sensor;
a manifold absolute pressure sensor;
a battery voltage sensor;
an alternator output current sensor;
an engine vibration sensor;
at least one generator output voltage sensor; and
at least one generator output current sensor.