JP2002181668A - Service life estimating method and service life estimating system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To estimate a service life of a vehicle on the basis of roughness of a road surface, traveling speed, and payload. SOLUTION: The traveling speed and the payload are input, and the road surface roughness is evaluated on the basis of a vibration level of the vehicle sent from a condition measuring means of the vehicle of a client via a network. The service life of the vehicle corresponding to the road surface roughness, the traveling speed, and the payload is estimated on the basis of data indicating a service life ratio corresponding to the road surface roughness read from a service life DB, data indicating a service life ratio corresponding to the traveling speed, and data indicating a service life ratio corresponding to the payload, it is displayed on a display means 20, and it is presented to the client via an output control part 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a life estimating method and a life estimating system, and more particularly to a life estimating method and a life estimating system for estimating a life of a vehicle based on a vibration level and a vehicle speed of the vehicle during traveling.

[0002]

2. Description of the Related Art Conventionally, it is known that the rougher the road surface, the more damage is given to structures such as a main frame and suspension of a vehicle such as a dump truck traveling therethrough, and the life of the vehicle is shortened. In general, the rougher the road surface,
Vehicle life is shortened. Also, the higher the traveling speed, the shorter the life of the vehicle. In addition, the heavier the gross vehicle weight,
Vehicle life is shortened.

[0003]

However, heretofore, the roughness of the road surface, the traveling speed, and the load (or vehicle weight) have been known.
Estimation of the life of the vehicle is not performed based on such as, so as to extend the life of the vehicle and reduce costs,
There was a problem that it was difficult to use the vehicle effectively.

The present invention has been made in view of such a situation, and measures the roughness of a road surface, a traveling speed, a vehicle weight, and the like, estimates the life of the vehicle based on these, and calculates the traveling speed and the like. The purpose is to extend the life of the vehicle by adjusting the load capacity and reduce the cost.

[0005]

According to a first aspect of the present invention, there is provided a life estimation method for measuring the roughness of a road surface and estimating the life of a vehicle traveling on the road surface. Measuring, based on the measured road surface roughness,
Estimating a life according to a traveling speed of a vehicle traveling on a road surface. In addition, the life can be estimated according to the weight of the load on the vehicle. In addition, the roughness of the road surface can be measured by detecting a temporal change in the vibration level of the running vehicle. A life estimation system according to claim 4, which is a life estimation system for measuring the roughness of a road surface and estimating the life of a vehicle traveling on the road surface. And estimating means for estimating the life according to the traveling speed of the vehicle traveling on the road surface based on the measured roughness of the road surface. A life estimation system according to claim 5, which is a life estimation system for measuring the roughness of a road surface and estimating the life of a vehicle traveling on a road surface, wherein the client terminal is connected to the client terminal via a network. A client terminal, at least receiving means for receiving a vibration level and running speed of the vehicle sent from the vehicle, display means for displaying information, and at least a vibration level and running received by the receiving means. Control means for transmitting the speed to the server via the network and for displaying the information distributed from the server on the display means, wherein the server has a relation between a road surface condition, a running speed of the vehicle, and a life of the vehicle. Storage means for storing data indicating
Calculating means for calculating the roughness of the road surface based on the vibration level and the traveling speed sent from the client terminal and the data stored in the storage means; and calculating the roughness of the road surface by the calculating means. And estimating means for estimating the life according to the traveling speed of the vehicle traveling on the road surface. Further, the server can distribute the data indicating the life of the vehicle estimated by the estimation means to the client terminal via the network. In the life estimation method and the life estimation system according to the present invention, the roughness of a road surface is measured, and the life according to the traveling speed of a vehicle traveling on the road surface is estimated based on the measured road surface roughness.

[0006]

FIG. 1 is a block diagram showing a configuration example of an embodiment of a life estimation system to which the present invention is applied.

[0007] As shown in the figure, in this embodiment, a network 1 such as the Internet and each client C
1, client terminals CT1 and CT2 connected to the network 1, a client (agent) terminal DT connected to the network 1 and connected to the network 1, and a client (agent) terminal DT connected to the network 1 , The client terminals CT1 and CT2, and a server SV connected to the client (agent) terminal DT via the network 1.

[0008] The client terminals CT1 and CT2 are provided with machine data (for example, construction machines) M1 and M2 having a driving source used by the clients C1 and C2, use conditions,
And input means 11 such as a keyboard for inputting operating environment conditions and the like, and display means 1 comprising a liquid crystal display (LCD) or the like.
2. storage means (not shown) composed of a hard disk or the like;
And CPU (central processing)
and control means (not shown) including a unit and the like. The control unit of the machine M1 transmits the data such as the model data of the machine M1, the use condition, and the operating environment condition, which are input from the input unit 11 of the machine M1, to the server S via the network 1.
V and a function of displaying information distributed from the server SV on the display unit 12. Similarly,
The control unit of the machine M2 transmits the model data of the machine M2, the use conditions, the operating environment conditions, and other data input from the input unit 11 of the machine M2 to the server SV via the network 1 and is distributed from the server SV. A function of displaying the information on the display means 12.

Each of the machines M1 and M2 has a machine M1,
State measuring means 15 for measuring a state of each part of M2, a vibration level, a vehicle speed, a load amount, and the like, which will be described later, are respectively provided.
The measurement information from the state measuring means 15 is transmitted in real time to the server SV via the client terminal CT1 or the client terminal CT2 provided with the state measuring means 15 and the network 1. That is, the state measuring means 15 attached to the machine M1
Transmits the measured information of each part of the machine M1 and the measured information such as the vibration level, the vehicle speed, and the load amount to the client terminal CT.
1. A real-time transmission to the server SV via the network 1 and a state measuring means 15 attached to the machine M2.
Transmits the measured information of each part of the machine M2 to the server SV via the client terminal CT2 and the network 1 in real time.

[0010] Similarly to the client terminals CT1 and CT2, the client (agent) terminal DT also has an input unit 11, a display unit 12, a storage unit 13, and a control unit 14.
It has. The control means 14 controls the client terminal CT
As in the case of the control means of the first and the CT2, the data such as the model data of the machines M1 and M2 input from the input means 11 and the use conditions and the operating environment conditions are transmitted to the server SV via the network 1 and the server SV. It has a function of displaying information distributed from the SV on the display unit 12.

As shown in FIG. 2, the server SV includes a display unit 20, an input control unit 21, an output control unit 22,
The storage device includes storage means 23 to 31 storing a main program and various databases, and a control means 40. The input control unit 21 performs control for receiving data via the network 1, and the output control unit 22 performs control for transmitting data via the network 1.

The storage means 23 has a standard DB (database), the storage means 24 has a use condition DB, and the storage means 2
5 is an operating environment condition DB, and the storage means 26 is a model-specific D
B, a machine-specific DB in the storage means 27, a main program in the storage means 28, a life DB in the storage means 29,
The storage means 30 stores a maximum traveling speed DB, and the storage means 31 stores a load capacity DB.

As shown in FIG. 3, the standard DB has a maintenance management item table 23A for each model (each model A, B, C).
23B and 23C are provided. In each of the maintenance management item tables 23A to 23C, the maintenance management items (maintenance management items for the whole body, the lubricating oil, the undercarriage, the engine, and the like) at any time point (for example, time H1, H
(2 ... interval) is set for inspection or maintenance.

The operating environment condition DB has various maintenance management item tables corresponding to the operating environment conditions for each model.
For example, in the case of model A, as shown in FIG.
Maintenance management table 24A for each highland area and gradient site
24B and 24C. The various maintenance management item tables 24A, 24B, and 24C indicate when (for example, the time H
1, H2...) Are set.

The use condition DB has various maintenance management item tables corresponding to use conditions for each model. For example, in the case of the model A, as shown in FIG.
(Low quality lubricating oil, low quality fuel), environment 2 and environment 3 are provided with maintenance management item tables 25A, 25B and 25C. Various maintenance management table 25A, 25B, 25C
Are set at what time (for example, time intervals H1, H2,...) Inspections and maintenance are to be performed for the maintenance management items set in advance.

As shown in FIG. 6, for example, the number-specific management data files 27A, 2
7B and 27C. The management data files 27A, 27B, and 27C for each machine store usage conditions, operating environment conditions, measurement information, recommendation information, and the like for each machine.

The life DB includes the road surface roughness and life for each model,
A table is provided that shows the correlation between the traveling speed and the life, and the correlation between the load and the life. The maximum traveling speed DB includes a table indicating the correlation between the road surface roughness and the maximum traveling speed for each model. The loading amount DB includes a table indicating a correlation between the life of the gear and the loading amount.

The control means 40 executes the main program stored in the storage means 28 and executes the client terminal C
The model data, the use condition data, and the operating environment condition data of the machines M1 and M2 transmitted from the T1, CT2, and DT are received via the input control unit 21, and the storage devices 23 to 2
5 or the state measuring means 15 of the machines M1 and M2.
Various kinds of measurement data measured through the network 1 and transmitted via the network 1 are received via the input control means 21. Then, the life calculated by the procedure described later is displayed on the display means 20 and the client terminals CT1, CT2, DT are connected via the network 1.
It has a function to deliver to.

FIG. 7 is a flowchart showing a procedure for estimating the life of the vehicle or the like in accordance with the result of measuring the vibration level by the state measuring means 15 attached to the machine M1 in the embodiment of FIG. . The case of the machine M2 is basically the same as the case of the machine M1, and a description thereof will be omitted. Here, the machines M1 and M2 are vehicles such as a dump truck and a loader.

First, in step S1, data indicating the vibration level of the machine M1 measured by the state measuring means 15 of the machine M1 is transmitted to the client terminal CT1.
Via the server SV. This vibration level corresponds to the degree of road surface roughness, and in step S2, the server SV evaluates the road surface roughness based on the vibration level. For example, the road surface roughness is ranked A to E according to the vibration level. Rank A indicates that the degree of road surface roughness is the smallest, and Rank E indicates that the degree of road surface roughness is the largest.

Next, in step S3, a model is selected. In the case of this example, one of models such as a dump truck and a loader is selected. Next, step S4
, Data indicating the traveling speed is input. next,
In step S5, the ratio of the actual load to the maximum load of the machine M1 is input.

In step S6, the life according to the road surface roughness is calculated. That is, the table showing the life ratio according to the road surface roughness of each model shown in FIG. 8 is read from the life DB, and the data representing the life ratio to the predetermined road surface roughness of the model selected in step S3 is converted into data. Based on the road surface roughness, the life is calculated based on the road surface roughness.

Each data in the table shown in FIG. 8 indicates the life when the vehicle travels on a substantially flat (rank A (see FIG. 11)) road surface at a predetermined speed (for example, 15 km / h (15 km / h)). If the model is a dump truck and the road surface roughness is rank B, the life ratio is 90%, the road surface roughness is level C, the life ratio is 80%, the road surface roughness is level D, This shows that the life ratio becomes 70%. When the model is a loader and the road surface roughness is level B, the life ratio is 90%,
When the road surface roughness is at level C, the life ratio is 75%,
When the road surface roughness is at level D, the life ratio is 60%.

Next, the process proceeds to step S7, and the life according to the traveling speed is calculated. That is, the table shown in FIG. 9 indicating the life ratio according to the traveling speed of each model is read from the life DB, and based on the data representing the life ratio of the model selected in step S3 to the predetermined traveling speed. ,
The life is calculated according to the traveling speed.

Each data in the table shown in FIG. 9 indicates that if the life is 1 when the traveling speed is 15 km / h, for example, when the model is a dump truck and the traveling speed is 40 km / h, the life ratio is 35%, Traveling speed is 35km / h
, Life ratio is 50%, running speed is 30km
/ H, the life ratio is 65% and the running speed is 25
At km / h, the life ratio is 80%. The model is loader and the traveling speed is 40km
/ H, the life ratio is 50% and the running speed is 35
At km / h, the life ratio is 60%, when the running speed is 30km / h, the life ratio is 70%, and when the running speed is 25km / h, the life ratio is 80%.

Next, the process proceeds to step S8, and the process proceeds to step S7.
, That is, the life calculated according to the road surface roughness and the traveling speed, is further corrected by a life ratio according to the load amount. That is, the table shown in FIG. 10 indicating the life ratio according to the loading amount for each model is read from the life DB, and based on the data representing the life ratio of the model selected in step S3 to the predetermined loading amount. , The life is calculated according to the load capacity.

Each data in the table shown in FIG. 10 indicates that when the load is 0, the life is 1, for example, when the model is a dump truck and the load is 100% of the maximum load, the life ratio is At 20%, 90% of the maximum load, the life ratio is 30%, and at 80% of the maximum load, the life ratio is 40%.
When the percentage is 70% of the maximum load capacity, the life ratio is 50%.
Also, if the model is a loader and the load capacity is 10
At 0%, the life ratio is 30%, at 90% of the maximum load, at 40%, at 80% of the maximum load, at 50%, the life ratio is 50%, at the maximum load At 70%, the life ratio is 60%.

For example, assuming that the road surface roughness is rank C, the traveling speed is 35 km / h, and the loading capacity is 80%, the life of the dump truck is 16% (= 80% (the life ratio of the dump truck at the road surface rank C). ) × 50% (lifetime ratio of the dump truck when the traveling speed is 35 km / h) × 40% (lifetime ratio of the dump truck when the loading amount is 80%).

In step S9, the life of the machine M1 (vehicle such as a dump truck or a loader in this example) calculated in step S8 is displayed on the display means 20 of the server SV.
Will be displayed on the screen.

Data indicating the life of the machine M1 obtained as a calculation result is transmitted from the server SV to the client terminal CT1 via the network 1, and the screen of the display means 12 of the client terminal CT1 indicates the life of the machine M1. Data can also be displayed.

FIG. 11 shows the relationship between road surface roughness and vehicle life. As shown in the figure, A is a road surface rank of a road surface having an unevenness of the ground of 2 cm or less every 5.4 m (m). Further, the road surface rank of the road surface of 3 to 7 cm where the undulation of the ground is every 5.4 m is B. Also,
The road surface rank of a road surface having a height of 8 to 16 cm every 5.4 m on the ground is C. In addition, the unevenness of the ground is 1 every 5.4 m.
The road surface rank of a road surface of 7 to 34 cm is D. Then, the road surface rank of a road surface having a height of 35 cm or more every 5.4 m of the ground is E.

In this case, as shown in the graph of FIG. 11, for example, as the road rank goes from A to E (the road surface becomes rougher), the life of the vehicle becomes shorter. Also, if the road surface roughness is the same, the faster the vehicle travels,
Life is shortened. In FIG. 11, the horizontal axis represents a road surface rank, and the vertical axis represents a substantially flat road surface having a road surface rank A of 1 hour / hour.
The life ratio is expressed assuming that the life of a vehicle traveling at a traveling speed of 5 km / h is 1.

FIG. 12 is a graph showing the relationship between the load and the life of the gear. The horizontal axis represents the maximum load capacity as 100% and represents the ratio of the actual load capacity to the maximum load capacity (unit: percentage), and the vertical axis represents the gear life when the load capacity is 100% as 1.0. It represents the ratio (unit is percentage) of the actual gear life to the gear life at the time. As shown in FIG. 12, the life ratio of the gears decreases as the load increases. In other words, the greater the load, the greater the load on the gear and the shorter the life. Therefore, in the case of a vehicle such as a dump truck or a loader having a gear as a component, the load applied to the component such as the gear increases as the load amount increases, and the life is shortened.

A program for executing the above-described processing is a CD-ROM (compact disc).
read only memory), DVD (dig)
It can be provided by being recorded on various recording media such as an italative disc, a floppy (registered trademark) disk, and a memory card. The program controls the operation of the computer, and the computer controlled by the program executes a predetermined process instructed by the program.

In the above embodiment, the machine M
The server SV inputs the traveling speed and the loading amount of the machine M1. However, the traveling speed and the loading amount of the machine M1 are input using the input unit 11 of the client terminal CT1, and transmitted to the server SV via the network 1. It can also be done.

The specific numerical values used in the above embodiment are examples, and the present invention is not limited to these numerical values.

The configuration and operation of the above embodiment are merely examples, and it goes without saying that the configuration and operation can be appropriately changed without departing from the spirit of the present invention.

[0038]

As described above, according to the life estimation method and the life estimation system according to the present invention, the roughness of the road surface is measured, and the traveling of the vehicle traveling on the road surface is measured based on the measured road surface roughness. Since the life is estimated according to the speed and the load, the life of the vehicle can be estimated based on the roughness of the road surface, the traveling speed, the load, and the like. Therefore, by adjusting the traveling speed and the load capacity, the life of the vehicle can be prolonged, and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an overall configuration example of an embodiment of a life estimation system to which the present invention is applied.

FIG. 2 is a block diagram illustrating a configuration example of a server in FIG. 1;

FIG. 3 is a diagram showing a configuration example of a standard DB stored in a server of FIG. 1;

FIG. 4 is a diagram showing a configuration example of an operating environment condition DB stored in the server of FIG. 1;

FIG. 5 is a diagram showing a configuration example of a use condition DB stored in the server of FIG. 1;

FIG. 6 is a diagram showing a configuration example of a machine-specific DB stored in the server of FIG. 1;

FIG. 7 is a flowchart illustrating a procedure for estimating a life in the embodiment of FIG. 1;

FIG. 8 is a diagram illustrating a relationship between road surface roughness and a life ratio of a vehicle.

FIG. 9 is a diagram showing a relationship between a traveling speed and a life ratio of a vehicle.

FIG. 10 is a diagram showing a relationship between a load capacity and a vehicle life ratio.

FIG. 11 is a diagram illustrating the definition of road surface roughness and the life ratio of a vehicle.

FIG. 12 is a graph showing the relationship between the life of a gear and the load on a vehicle.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 network 11 input means 12 display means 13 storage means 14 control means 15 state measurement means 20 display means 21 input control means 22 output control means 23 to 31 storage means 40 control means CT1, CT2, DT client terminals M1, M2 machine SV server

Claims (6)

[Claims] 1. A life estimation method for measuring the roughness of a road surface and estimating the life of a vehicle traveling on the road surface, comprising: measuring the roughness of the road surface; and measuring the roughness of the road surface. And estimating a life according to a traveling speed of the vehicle traveling on the road surface, based on the vehicle life. 2. The life estimation method according to claim 1, wherein the estimation of the life is performed according to the weight of the load of the vehicle. 3. The life estimation method according to claim 1, wherein the roughness of the road surface is measured by detecting a temporal change in a vibration level of the vehicle during traveling. 4. A life estimation system for measuring the roughness of a road surface and estimating the life of a vehicle traveling on the road surface, wherein the measurement unit measures the roughness of the road surface and the measurement unit measures the roughness of the road surface. And estimating means for estimating a life according to a traveling speed of the vehicle traveling on the road surface based on the roughness of the road surface. 5. A life estimation system for measuring the roughness of a road surface and estimating the life of a vehicle traveling on the road surface, comprising: a client terminal; and a server connected to the client terminal via a network. The client terminal includes: a receiving unit configured to receive at least a vibration level and a traveling speed of the vehicle transmitted from the vehicle; a display unit configured to display information; and a display unit configured to display at least the vibration level received by the receiving unit. Control means for transmitting the traveling speed to the server via the network, and displaying information distributed from the server on the display means, wherein the server is configured to: Storage means for storing data indicating a relationship between a speed and a life of the vehicle; and Calculating means for calculating the roughness of the road surface based on the obtained vibration level and traveling speed and the data stored in the storage means; and the roughness of the road surface calculated by the calculating means And estimating means for estimating a life according to a traveling speed of the vehicle traveling on the road surface based on the life estimation. 6. The life estimation system according to claim 5, wherein the server distributes data indicating the life of the vehicle estimated by the estimation unit to the client terminal via the network.