Intelligent monitoring method and apparatus

Patent metadata

Field	Value
Publication number	US-10282968-B2
Application number	US-201815889984-A
Country	US
Kind code	B2
Filing date	Feb 6, 2018
Priority date	May 8, 2017
Publication date	May 7, 2019
Grant date	May 7, 2019

Abstract

The present disclosure discloses an intelligent monitoring method and apparatus. One specific implementation of the method comprises: determining, based on a plurality of parameter values of a warning associated parameter of a to-be-monitored apparatus within a preset period, a time dependent characteristic that parameter values of the warning associated parameter; and determining a target period, based on the parameter values of the warning associated parameter of the to-be-monitored apparatus at a current time and the time dependent characteristic of the parameter values of the warning associated parameter, and determining whether to generate a warning information based on a period interval encompassing the target period. The warning of possible faults in the operation of industrial equipment is implemented, without a manual monitoring of the operation of the industrial equipment is not required and a complete automated operation of the industrial equipment is implemented.

First claim

What is claimed is:

1. An intelligent monitoring method, the method comprising:
adjusting a rotation speed of a water pump and a valve opening;
acquiring a flow, a lift, and a power of the water pump at different rotation speeds and value openings;
constructing a flow-lift-rotation speed-power model based on the adjusted rotation speeds, the acquired flows, the acquired lifts, and the acquired powers;
determining, based on a plurality of parameter values of a warning associated parameter of a to-be-monitored apparatus within a preset period, a time dependent characteristic of the warning associated parameter; and
determining a target period, based on the parameter values of the warning associated parameter of the to-be-monitored apparatus at a current time and the time dependent characteristic of the warning associated parameter, and determining whether to generate warning information based on a period interval encompassing the target period, the target period being a period between the current time and the parameter values of the warning associated parameter being greater than a threshold corresponding to the warning associated parameter, wherein the warning associated parameter comprises:
a power deviation rate, a flow deviation rate, and a lift deviation rate, the time dependent characteristic of parameter values of the warning associated parameter comprises:
a waveform characteristic of the power deviation rate of the water pump, a waveform characteristic of the flow deviation rate of the water pump, and a waveform characteristic of the lift deviation rate of the water pump; and
the determining, based on a plurality of parameter values of the warning associated parameter of the to-be-monitored apparatus within a preset period, a time dependent characteristic of parameter values of the warning associated parameter, comprises:
executing following operations to determine a comprehensive characteristic:
acquiring an operating parameter of the water pump, the operating parameter comprising one of: a flow, a lift, a power, or a rotation speed;
querying, based on the operating parameter, from the flow-lift-rotation-speed-power model indicating an associated relation between the flow, the lift, the rotation speed, and the power, data required for calculating the power deviation rate of the water pump, the flow deviation rate of the water pump and the lift deviation rate of the water pump;
calculating the power deviation rate of the water pump, the flow deviation rate of the water pump and the lift deviation rate of the water pump, based on the queried data;
determining the waveform characteristic of the power deviation rate of the water pump, the waveform characteristic of the flow deviation rate of the water pump and the waveform characteristic of the lift deviation rate of the water pump;
judging whether a sum of periods for executing the operations to determine the comprehensive characteristic is greater than the first preset period;
if not, executing the operations to determine the comprehensive characteristic again after a second preset period; and
if yes, aggregating the waveform characteristic of the power deviation rate of the water pump, the waveform characteristic of the flow deviation rate of the water pump and the waveform characteristic of the lift deviation rate of the water pump determined in each of the operations to determine the comprehensive characteristic, to obtain the waveform of the power deviation rate of the water pump, the waveform characteristic of the flow deviation rate of the water pump and the waveform characteristic of the lift deviation rate of the water pump.

2. The method according to claim 1 , wherein the method further comprises:
executing following operations multiple times to determine an energy saving characteristic:
adjusting a rotation speed of a water pump and a valve opening;
acquiring, after adjusting the rotation speed and the valve opening, the flow of the water pump, the lift of the water pump, the rotation speed of the water pump, and the power of the water pump, and calculating an efficiency of the water pump;
determining an associated relation between the flow, the lift and the efficiency at the rotation speed after adjusting the rotation speed, based on the flow of the water pump, the lift of the water pump and the efficiency of the water pump after adjusting the rotation speed and the valve opening; and
aggregating associated relations between the flow, the lift and the efficiency at the rotation speed after adjusting the rotation speed determined in each of operations to determine the energy saving characteristic, to obtain a flow-lift-efficiency database comprising the associated relations between the flow, the lift and the efficiency at multiple speeds.

3. The method according to claim 2 , the method further comprising:
determining a performance interval of a current operating point based on the flow and the lift of the water pump using the flow-lift-efficiency database.

4. The method according to claim 1 , wherein the warning associated parameter further comprises a functional value of a function indicating an associated relation between temperature information and a rotation speed of the water pump, the time dependent characteristic of parameter values of the warning associated parameter is a waveform characteristic of the function indicating the associated relation between the temperature information and the rotation speed of the water pump; and
the determining, based on a plurality of parameter values of the warning associated parameter of the to-be-monitored apparatus within a preset period, a time dependent characteristic of parameter values of the warning associated parameter, further comprises:
executing following operations to determine a function characteristic:
acquiring the temperature information or the rotation speed of the water pump, the temperature information comprising: ambient temperature, fluid temperature or bearing temperature;
taking the temperature information or the rotation speed of the water pump as a fitting data required for constructing a function indicating the associated relation between the temperature information and the rotation speed of the water pump;
calculating, based on the temperature information or the rotation speed of the water pump, the functional value of the function indicating the associated relation between the temperature information and the rotation speed of the water pump;
determining the waveform characteristic of the function indicating the associated relation between the temperature information and the rotation speed of the water pump;
judging whether a sum of periods for executing the operations to determine the function characteristic is greater than a first preset period;
if not, executing the operations to determine the function characteristic again after a second preset period;
if yes, aggregating the waveform characteristic of the function indicating the associated relation between the temperature information and the rotation speed of the water pump determined in each of the operations to determine the functional characteristic, to obtain the waveform of the functional characteristic indicating the associated relation between the temperature information and the rotation speed of the water pump.

5. The method according to claim 4 , the method further comprising:
predicting a predicted time of arising a bearing wear fault in the water pump based on the waveform characteristic of the function indicating the associated relation between the temperature information and the rotation speed of the water pump.

6. The method according to claim 1 , the method further comprising:
predicting a predicted time of arising an impeller corrosion or a wear fault in

Assignees

• Beijing Baidu Science And Tech Co Ltd
• Beijing Baidu Netcom Sci & Tec

Inventors

• Tang Hu
• Yan Xiaoyun
• Cao Jianchao
• Luo Yiming
• Zhang Lifei
• Zhang Binghua

Classifications

• G05B19/048 Primary

  Monitoring; Safety · CPC title

• G08B21/182 Primary

  Level alarms, e.g. alarms responsive to variables exceeding a threshold · CPC title

• G08B21/187

  Machine fault alarms · CPC title

• G08B21/18

  Status alarms (G08B21/02 takes precedence) · CPC title

• G08B21/185

  Electrical failure alarms · CPC title