Condition Monitoring System, Condition Monitoring System Unit, and Terminal System Unit

• US 20140232539A1
• Filed: 02/19/2014
• Published: 08/21/2014
• Est. Priority Date: 02/20/2013
• Status: Active Grant

• Current Assignee: Hitachi Construction Machinery Company Limited (Hitachi, Ltd.)
• Original Assignee: Hitachi Construction Machinery Company Limited (Hitachi, Ltd.)
• Inventors: UCHIDA, Takayuki, HIRUTA, Tomoaki, SUZUKI, Hideaki, FUJIWARA, Junsuke
• Granted Patent: US 9,317,978 B2
• Time in Patent Office: Days
• US Class Current: 340/438
• CPC Class Codes: G06F 9/5066 Algorithms for mapping a plurality of inter-dependent sub-tasks onto a plurality of physical CPUs mappping at compile time, see G06F8/451
• CPC Class Codes: G07C 5/008 communicating information to a remotely located station transmission systems for measured values G08C
• CPC Class Codes: G07C 5/08 Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
• CPC Class Codes: H04L 67/10 in which an application is distributed across nodes in the network software deployment G06F8/60; multiprogramming arrangements G06F9/46

Abstract

A condition monitoring system includes a terminal system unit and a condition monitoring system unit connected together via radiocommunication channels. The terminal system unit is mounted on a self-propelled machine, while the monitoring system unit is arranged at a control center. The monitoring system unit is provided with a unit for setting an alarm delivery condition, another unit for setting an aggregation condition, a further unit for transmitting the alarm delivery condition and aggregation condition so set, and a screen display unit for displaying various information. The terminal system unit is provided with an alarm creation unit for creating alarm information according to the alarm delivery condition so transmitted, an aggregate data creation unit for creating aggregate data according to the transmitted aggregation condition, and a data transmitting unit for transmitting the alarm information and aggregate data so created.

Claims

1. A condition monitoring system comprising a terminal system unit, which is mounted on a self-propelled machine, and a condition monitoring system unit, which is arranged at a control center, connected together via radiocommunication channels, wherein:

the condition monitoring system unit is provided with an alarm delivery condition setting unit for setting an alarm delivery condition as a condition under which the self-propelled machine is to deliver an alarm, an aggregation condition setting unit for setting an aggregation condition as a condition for aggregating data of a sensor arranged on the self-propelled machine, a condition transmitting unit for transmitting, to the terminal system unit, the alarm delivery condition and aggregation condition so set, and a screen display unit for displaying various information, and

the terminal system unit is provided with an alarm creation unit for creating alarm information on the self-propelled machine from the data of the sensor according to the alarm delivery condition so transmitted, an aggregate data creation unit for creating aggregate data from the data of the sensor according to the transmitted aggregation condition, and a data transmitting unit for transmitting, to the condition monitoring system unit, the alarm information and aggregate data so created.

2. The condition monitoring system according to claim 1, wherein:

the condition monitoring system unit is provided with an operation mode condition setting unit for setting operation mode conditions as conditions for defining operation modes of the self-propelled machine, respectively, the alarm delivery condition can be set for every set one of the operation modes, and the aggregation condition can be set for the alarm delivery condition so set.

3. The condition monitoring system according to claim 2, wherein:

the alarm delivery condition is set by a relational expression of the data of the sensor or processed data of the data and a first threshold value, and the alarm delivery condition setting unit changes the setting of the alarm delivery condition based on an input of a new first threshold value from outside,

the aggregation condition is set by a width or number of bins, window width and aggregation time period for creating a histogram, and the aggregation condition setting unit changes the setting of the aggregation condition based on inputs of a new width or number of bins, window width and aggregation time period from outside, and

the operation mode conditions are set by a relational expression of the data of the sensor or the processed data of the data and a second threshold value, and the operation mode condition setting unit changes the operation mode conditions based on an input of a new second threshold value from outside.

4. The condition monitoring system according to claim 3, wherein:

the alarm delivery condition setting unit sets the alarm delivery condition by using data of plural sensors or data obtained by subjecting processed data of these data to a multivariate analysis.

5. The condition monitoring system according to claim 1, wherein:

the data transmitting unit transmits in priority one piece of the alarm information, said one piece of the alarm information having a high degree of deviation from the alarm delivery condition.

6. The condition monitoring system according to claim 1, wherein:

the data transmitting unit transmits in priority one piece of the alarm information, said one piece of the alarm information having a high frequency of occurrence.

7. The condition monitoring system according to claim 1, wherein:

the condition monitoring system unit displays, on the screen display unit, at least one of an expected number of alarm deliveries and an expected probability of alarm deliveries as calculated based on the alarm delivery conditions set by the alarm delivery condition setting unit and the aggregate data transmitted from the data transmitting unit.

8. The condition monitoring system according to claim 2, wherein:

the condition monitoring system unit displays, on the screen display unit, at least one of at least one of an expected number of alarm deliveries and an expected probability of alarm deliveries, which have been calculated based on the alarm delivery conditions set by the alarm delivery condition setting unit and the aggregate data transmitted from the data transmitting unit, for every set one of the operation modes.

9. The condition monitoring system according to claim 1, wherein:

the condition monitoring system unit is connected to plural terminal system units, which are mounted on plural self-propelled machines, respectively, via the radiocommunication channels, and

the condition monitoring system unit displays at least one of an expected number of alarm deliveries and an expected probability of alarm deliveries, which have been calculated based on the alarm delivery conditions set by the alarm delivery condition setting unit and the aggregate data transmitted from the data transmitting unit, with respect to every one of the self-propelled machines, side by side on the screen display unit.

12. The condition monitoring system according to claim 2, wherein:

the data transmitting unit transmits in priority one piece of the alarm information, said one piece of the alarm information having a high degree of deviation from the alarm delivery condition.

13. The condition monitoring system according to claim 2, wherein:

the data transmitting unit transmits in priority one piece of the alarm information, said one piece of the alarm information having a high frequency of occurrence.

10. A condition monitoring system unit to be arranged at a control center and communicable, via radiocommunication channels, with a terminal system unit mounted on a self-propelled machine, wherein:

the condition monitoring system unit is provided with an alarm delivery condition setting unit for setting an alarm delivery condition as a condition under which the self-propelled machine is to deliver an alarm, an aggregation condition setting unit for setting an aggregation condition as a condition for aggregating data of a sensor arranged on the self-propelled machine, a condition transmitting unit for transmitting, to the terminal system unit, the alarm delivery condition and aggregation condition so set, and a screen display unit for displaying at least one of an expected number of alarm deliveries and an expected probability of alarm deliveries as calculated based on the alarm delivery conditions set by the alarm delivery condition setting unit and aggregate data of the data of the sensor as transmitted from the terminal system unit.

11. A terminal system unit to be mounted on a self-propelled machine and communicable, via radiocommunication channels, with a condition monitoring unit system arranged at a control center, wherein:

the terminal system unit is provided with an alarm creation unit for creating alarm information on the self-propelled machine from data of a sensor arranged on the self-propelled machine according to an alarm delivery condition, as a condition under which the self-propelled machine delivers an alarm, when the alarm delivery condition is transmitted from the condition monitoring system unit, an aggregate data creation unit for creating aggregate data from the data of the sensor according to an aggregation condition, as a condition under which data of the sensor are to be aggregated, when the aggregation condition is transmitted from the condition monitoring system unit, and a data transmitting unit for transmitting, to the condition monitoring system unit, the alarm information and aggregate data so created.