JP2009235940A - Fuel consumption quantity correction device in transceiving system for construction machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To construct a system executing correction making fuel consumption quantity of a construction machine good from a judgment result by taking not only altitude (air pressure) but also air temperature into account without adding a controller provided with new sensors (outside air temperature sensor or the like) and a complicated control map. <P>SOLUTION: Fuel consumption quantities corresponding to a plurality of construction machines 1 are stored in a reference fuel consumption quantity database 31. Information of air temperature or/and altitude is stored in a position corresponding information database 32. Fuel consumption quantity correction information corresponding to air temperature or/and altitude is stored in a fuel consumption quantity correction information database 33. A judgment means 41 judges whether fuel consumption quantity of the construction machine 1 is corrected or not. A position information conversion means 42 executes conversion to information of air temperature or/and altitude at the position of the construction machine 1. A fuel consumption quantity correction command creation means 43 creates fuel consumption quantity correction command corresponding to air temperature or/and altitude of the construction machine 1. A transmitting and receiving means 50 transmits the fuel consumption quantity correction command to the construction machine 1. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an apparatus for correcting fuel consumption of a construction machine in a construction machine transmission / reception system.

  It is known that fuel consumption is affected by temperature and pressure. For example, fuel consumption tends to decrease as the temperature decreases. Further, at a place where the altitude is high, since the atmospheric pressure decreases, the intake pressure of the engine decreases, the ignition point in the engine shifts, and the fuel consumption increases.

Therefore, when the fuel consumption starts to increase, it is necessary to correct the fuel consumption to an appropriate amount according to the temperature and the atmospheric pressure. For example, it is necessary to correct so that the warm-up time and warm-up speed are appropriate according to the temperature.

In particular, construction machines are often transported and operated in places with extremely different temperatures and pressures. For example, when a construction machine moves from a tropical region to a very cold region, the temperature fluctuates greatly. For this reason, in a construction machine, correcting the fuel consumption according to the temperature and the atmospheric pressure is an important issue in reducing wasteful fuel loss.

In this specification, “fuel consumption” is used to mean the amount of fuel consumed per unit time (unit: L / h, for example).

Also, construction machines such as hydraulic excavators operate continuously for a long time once the engine is started. For example, when the engine is started in the morning, it runs continuously until the evening, except for a brief pause during the lunch break. In such usage peculiar to construction machinery, the warm-up time and the warm-up speed, that is, the warm-up time from the first engine start in the day to the start of operation of the work equipment, the engine speed during the warm-up time It is known that the number of warm-up revolutions indicating the number has a great influence on the fuel consumption.

(Practical technology in the past)
In the field of construction machinery, a transmission / reception system for transmitting / receiving data between a plurality of construction machinery and ground stations existing at various positions on the earth has already been introduced. In this transmission / reception system, internal information such as the current position of the construction machine is transmitted from a plurality of construction machines to the ground station, and the ground station receives and processes the internal information of the plurality of construction machines, depending on the processing result. Then, a command is transmitted from the ground station to each construction machine, and each construction machine performs processing based on the received command.

(Prior art found in patent literature)
In Patent Document 1, the altitude of the construction machine operating site is calculated based on the position information detected by the GPS sensor mounted on the construction machine and the map database, and knocking occurs according to the calculated altitude. An invention is described in which the fuel injection amount to the engine is appropriately adjusted so that the fuel is not deteriorated or the output is reduced.
Japanese Patent Laid-Open No. 2005-61280

  The invention described in Patent Document 1 appropriately adjusts the amount of fuel injected into the engine so that knocking does not occur, smoke does not deteriorate, output decreases, and the like. Is not something to optimize. In other words, Patent Document 1 does not determine whether the current fuel consumption is in a good state or a bad state, and does not make corrections so that the fuel consumption is good when the fuel consumption is bad.

  Further, the fuel consumption varies greatly depending not only on the altitude (atmospheric pressure) but also on the air temperature, and this point is not considered at all in Patent Document 1.

  In addition, in order to correct the fuel consumption of construction machinery to be appropriate, a new sensor (such as an outside air temperature sensor) or a controller with a complicated control map is added to the individual vehicle bodies of many existing construction machinery. This means that the number of components is increased in constructing the system, and there is a demand for constructing the system without increasing the number of components.

  The present invention has been made in view of such circumstances, and determines whether or not a new problem that has not been solved in the prior art, that is, whether the current fuel consumption is in a good state or a bad state, and the determination is made. It is intended to achieve correction so that the fuel consumption is improved from the result. And it makes it a subject to correct | amend so that the fuel consumption of a construction machine may become appropriate in that case in consideration of not only altitude (atmospheric pressure) but also temperature. Moreover, it is an object to construct a system without adding a new sensor (such as an outside air temperature sensor) or a controller with a complicated control map to each vehicle body of many existing construction machines.

The first invention is
The internal information of the construction machine including at least the position of the construction machine is transmitted from the plurality of construction machines to the ground station, and the ground station receives and processes the internal information of the plurality of construction machines, and the ground station according to the processing result. The command is sent to the individual construction machine from, and the individual construction machine is applied to the transmission / reception system of the construction machine that performs processing based on the received command.
The construction machine transmits internal information including location and fuel consumption to the ground station as internal information,
The ground station
A reference fuel consumption database created based on internal information of a plurality of construction machines and storing a reference fuel consumption corresponding to each condition;
A position correspondence information database storing temperature and / or altitude information corresponding to each position;
A fuel consumption correction information database storing fuel consumption correction information for correcting the fuel consumption of the construction machine according to the temperature or / and altitude;
Based on the internal information of the source construction machine and the reference fuel consumption database, the fuel consumption of the source construction machine is compared with the fuel consumption of the source construction machine and the reference fuel consumption under the same conditions. A determination means for determining whether or not to correct the consumption;
Position information conversion means for converting the position of the transmission source construction machine into the temperature or / and altitude information at the location of the transmission source construction machine based on the position of the transmission source construction machine and the position correspondence database;
When it is determined that the fuel consumption of the source construction machine should be corrected, based on the temperature or / and altitude information at the location of the source construction machine and the fuel consumption correction information database, A fuel consumption correction command creating means for creating a fuel consumption correction command according to the temperature or / and altitude at the point of the construction machine;
A fuel consumption correction device in a transmission / reception system for a construction machine, comprising: a transmission means for transmitting the created fuel consumption correction command to a construction machine as a transmission source.

The second invention is
The internal information of the construction machine including at least the position of the construction machine is transmitted from the plurality of construction machines to the ground station, and the ground station receives and processes the internal information of the plurality of construction machines, and the ground station according to the processing result. The command is sent to the individual construction machine from, and the individual construction machine is applied to the transmission / reception system of the construction machine that performs processing based on the received command.
The construction machine has internal information as internal information, including position, fuel consumption, warm-up time from engine start to operation of the work equipment, and warm-up speed indicating the engine speed during the warm-up time. To send to
The ground station
A reference fuel consumption database created based on internal information of a plurality of construction machines and storing a reference fuel consumption corresponding to each condition;
A position correspondence information database storing temperature information corresponding to each position;
An optimal warm-up database storing the optimal warm-up time and the optimal warm-up speed for each temperature,
Based on the internal information of the source construction machine and the reference fuel consumption database, the fuel consumption of the source construction machine is compared with the fuel consumption of the source construction machine and the reference fuel consumption under the same conditions. A determination means for determining whether or not to correct the consumption;
Based on the position of the transmission source construction machine and the position correspondence information database, the position information conversion means for converting the position of the transmission source construction machine into the temperature information at the point of the transmission source construction machine,
When it is determined that the fuel consumption of the source construction machine should be corrected, based on the temperature information at the source construction machine point and the optimal warm-up database, the temperature at the source construction machine point The optimal warm-up time and the optimal warm-up speed are determined in accordance with the required warm-up time, optimal warm-up speed and the current warm-up time and warm-up speed of the source construction machine. A fuel consumption correction command creating means for creating a command for correcting the fuel consumption according to the comparison result;
A fuel consumption correction device in a transmission / reception system for a construction machine, comprising: a transmission means for transmitting the created fuel consumption correction command to a construction machine as a transmission source.

The third invention is the first invention,
The standard fuel consumption database stores the standard fuel consumption corresponding to each altitude.
The judging means is to judge whether or not to correct the fuel consumption of the source construction machine by comparing the fuel consumption of the source construction machine and the reference fuel consumption under the same altitude. It is characterized by being.

A fourth invention is the first invention,
When the fuel consumption correction command creating means determines that the fuel consumption of the source construction machine should be corrected, the command for correcting the fuel injection of the engine according to the altitude at the point of the source construction machine It is characterized by creating.

A fifth invention is the first invention,
When the fuel consumption correction command creation means determines that the fuel consumption of the transmission source construction machine should be corrected, the operation of the work machine starts from the engine start according to the temperature at the location of the transmission source construction machine. It is characterized in that a command for making the warm-up speed indicating the engine warm-up time and the warm-up speed indicating the engine speed during the warm-up time appropriate is created.

A sixth invention is the first invention,
The construction machine transmits GPS position information including position information of latitude, longitude, and altitude to the ground station,
The position correspondence information database stores temperature information corresponding to each position.
The position information conversion means converts the position of the transmission source construction machine into information on the temperature at the point of the transmission source construction machine based on the position of the transmission source construction machine and the position correspondence database. Features.

A seventh invention is the second invention,
The construction machine has information on a combination of operation map information indicating a time period in which the engine is operating and actual operation map information indicating a time period in which the engine is operating and the work machine is operating, as a warm-up time. This information is transmitted to the ground station.

  1st invention presupposes being applied to the transmission / reception system 100 of the construction machine shown in FIG. In the construction machine transmission / reception system 100, the internal information of the construction machine 1 including at least the position of the construction machine 1 is transmitted from the plurality of construction machines 1, 1, 1,... To the ground station 130. The internal information of the machines 1, 1, 1,... Is received and processed, and a command is transmitted from the ground station 130 to each construction machine 1 according to the processing result. Processing is performed based on the command.

The construction machine 1 transmits internal information including the position and the fuel consumption amount to the ground station 130 as internal information.

  The ground station 130 is configured as a server 131 and includes a database unit 30 including a reference fuel consumption database 31, a position correspondence information database 32, and a fuel consumption correction information database 33, a determination unit 41, and a position information conversion unit. 42 and an arithmetic processing unit 40 including a fuel consumption correction command creation means 43 and a transmission / reception means 50.

As shown in FIG. 2, the reference fuel consumption database 31 is created based on internal information of a plurality of construction machines 1, 1, 1. The reference fuel consumption database 31 stores reference fuel consumption corresponding to each condition. For example, the reference fuel consumption database 31 stores reference fuel consumption (average fuel consumption of a plurality of construction machines 1, 1, 1,...) Corresponding to each altitude (third invention). .

The position correspondence information database 32 stores temperature and / or altitude information corresponding to each position.

The fuel consumption correction information database 33 stores fuel consumption correction information for correcting the fuel consumption of the construction machine according to the temperature or / and altitude.

In the judging means 41, based on the internal information of the source construction machine 1 and the reference fuel consumption database, the fuel consumption of the source construction machine 1 and the reference fuel consumption are compared under the same conditions, It is determined whether or not to correct the fuel consumption of the construction machine 1 that is the transmission source. For example, whether or not the fuel consumption of the source construction machine 1 is corrected by comparing the fuel consumption of the source construction machine 1 with the reference fuel consumption (average fuel consumption) under the same altitude. Is determined (third invention).

In the position information conversion means 42, based on the position of the transmission source construction machine 1 and the position correspondence database 32, the position of the transmission source construction machine 1 is the temperature or / and altitude at the point of the transmission source construction machine 1. Converted to information.

When the fuel consumption correction command creation means 43 determines that the fuel consumption of the transmission source construction machine 1 should be corrected, the temperature or / and altitude information around the transmission source construction machine 1 and the fuel consumption amount Based on the correction information database 33, a fuel consumption correction command corresponding to the temperature or / and altitude at the point of the construction machine 1 that is the transmission source is created. For example, when the fuel consumption correction command creating means 43 determines that the fuel consumption of the transmission source construction machine 1 should be corrected, the fuel injection of the engine 3 is performed according to the altitude at the point of the transmission source construction machine 1. Is generated (fourth invention; step 307 in FIG. 5). Further, for example, when the fuel consumption correction command creating means 43 determines that the fuel consumption of the transmission source construction machine 1 should be corrected, the engine start is started according to the temperature at the point of the transmission source construction machine 1. For the warming-up time from when the work machine is started until the start of the operation of the working machine, and a command for making the warm-up speed indicating the engine speed during the warming-up time appropriate (5th invention; steps 308 to 310 in FIG. 5) ).

The transmission / reception means 50 transmits the created fuel consumption amount correction command to the construction machine 1 that is the transmission source. As a result, the construction machine 1 as the transmission source receives the fuel consumption correction command, and performs processing for correcting the fuel consumption based on the received fuel consumption correction command.

  The altitude information at the point of the construction machine 1 may be obtained directly from the detection result of the GPS sensor 6 mounted on the construction machine 1. That is, in the sixth invention, the construction machine 1 transmits GPS position information including position information of latitude, longitude, and altitude to the ground station 130. In the ground station 130, altitude information is extracted from the position information. On the other hand, temperature information corresponding to each position is stored in the position correspondence information database 32. In the position information conversion means 42, the position of the transmission source construction machine 1 is converted into the temperature information at the point of the transmission source construction machine 1 based on the position of the transmission source construction machine 1 and the position correspondence database 32. The

In the second invention, the construction machine 1 includes, as internal information, the position, fuel consumption, the warm-up time from the start of the engine to the start of operation of the work machine, and the warm-up speed indicating the engine speed during the warm-up time. The included internal information is transmitted to the ground station 130.

  The reference fuel consumption database 31 is created based on internal information of the plurality of construction machines 1, 1, 1,. The reference fuel consumption database 31 stores reference fuel consumption corresponding to each condition.

  The position correspondence information database 32 stores temperature information corresponding to each position.

The optimum warm-up database 33A stores the optimum warm-up time and the optimum warm-up speed corresponding to each temperature.

  In the judging means 41, based on the internal information of the source construction machine 1 and the reference fuel consumption database, the fuel consumption of the source construction machine 1 and the reference fuel consumption are compared under the same conditions, It is determined whether or not to correct the fuel consumption of the construction machine 1 that is the transmission source.

  The position information conversion means 42 converts the position of the transmission source construction machine 1 into the temperature information at the point of the transmission source construction machine 1 based on the position of the transmission source construction machine 1 and the position correspondence information database. .

When the fuel consumption correction command creating means 43 determines that the fuel consumption of the source construction machine 1 should be corrected, as shown in FIG. 5, the temperature information at the point of the source construction machine 1 and Based on the optimum warm-up database 33A, the optimum warm-up time and the optimum warm-up speed corresponding to the temperature at the point of the construction machine 1 that is the transmission source are obtained (step 303). Then, the obtained optimum warm-up time and optimum warm-up speed are compared with the current warm-up time and warm-up speed of the transmission source construction machine (steps 304, 305, and 306). Then, a command for correcting the fuel consumption according to the comparison result is created (steps 307 to 310).

The transmission / reception means 50 transmits the created fuel consumption amount correction command to the construction machine 1 that is the transmission source. As a result, the construction machine 1 as the transmission source receives the fuel consumption correction command, and performs processing for correcting the fuel consumption based on the received fuel consumption correction command.

Information on the warm-up time may be acquired from the operation map information and actual operation map information of the construction machine 1. That is, in the seventh invention, as shown in FIG. 3, the construction machine 1 includes the operation map information indicating the time zone in which the engine 3 is operating, and the time zone in which the engine is operating and the work machine is operating. Information consisting of a combination with the actual operation map information shown is transmitted to the ground station 130 as warm-up time information.

As described above, according to the present invention, reference fuel consumption data is created based on internal information such as fuel consumption of a plurality of construction machines, that is, many construction machines operating in various parts of the world. Therefore, it is possible to obtain the reference fuel consumption data that can be judged with high reliability whether the fuel consumption is good or bad. Since the determination is made in comparison with the reference fuel consumption, it can be determined very reliably whether or not the fuel consumption of each construction machine 1 should be corrected.

As described above, according to the present invention, it is determined whether the current fuel consumption of the construction machine 1 is in a good state or a bad state, and a correction is made based on the determination result so that the fuel consumption is good. Challenges are achieved. At that time, not only the altitude (atmospheric pressure) but also the temperature can be taken into consideration so that the fuel consumption of the construction machine 1 can be corrected.

In addition, since the existing transmission / reception system 100 is used, the construction machine 1 only has to send internal information such as position and fuel consumption to the ground station 130, and whether or not the fuel consumption should be corrected, Acquisition of temperature and altitude data and creation of fuel consumption correction commands are all performed at one location on the ground station 130. Therefore, new sensors (such as outside temperature sensors) and complex sensors on individual bodies of many existing construction machines There is no need to add a controller with a simple control map. For this reason, a system can be constructed without increasing the number of components.

Hereinafter, an embodiment of a fuel consumption correction device in a transmission / reception system for a construction machine according to the present invention will be described with reference to the drawings. In the following description, a hydraulic excavator is assumed as a construction machine.

FIG. 1 shows the overall apparatus configuration of the embodiment.

In the transmission / reception system 100 of the embodiment, the internal information of the construction machine 1 including the position of the construction machine 1 is transmitted from the plurality of construction machines 1, 1, 1... To the ground station 130. 1, 1, 1,... Are received and processed, and a command is transmitted from the ground station 130 to each construction machine 1 according to the processing result. The individual construction machine 1 receives the received command. Processing is performed based on

An engine 3 is provided on a vehicle body 2 of the construction machine 1. A fuel injection device 4 is attached to the engine 3. The fuel injection device 4 is a device that injects fuel into the cylinders of the engine 3. The fuel injection device 4 is adjusted by the engine controller 11. The engine controller 11 controls the fuel injection amount and the fuel injection timing via the fuel injection device 4. In the engine controller 11, the consumption amount of fuel injected into the cylinder of the engine 3 is calculated at a predetermined sampling period. This is called instantaneous fuel consumption F (unit: L / h).

Further, in the engine controller 11, the engine operating time SMR is integrated as an integrated value of the service meter.

In the engine controller 11, the actual operation time RSMR in which the engine 3 is operating and the work machine 5 of the construction machine 1 is operating is accumulated. The time during which the work machine 5 is operating is obtained by measuring the time during which the work machine operating lever has been operated from the neutral position. The actual operation time RSMR in which the engine 3 is operating and the work machine 5 of the construction machine 1 is operating is obtained by adding up the time when the engine operation time SMR and the work machine operation lever operation time overlap. Desired.

3A and 3B illustrate an operation map MP and an actual operation map RMP of the construction machine 1. That is, as shown in FIG. 3, the operation map MP is information indicating a time zone in which the engine 3 is operating in one day. The actual operation map RMP is information indicating a time zone in which the engine 3 is operating and the work machine 5 is operating in one day.

Further, the engine 3 is provided with an engine rotation sensor 3a for detecting the engine speed N. The engine controller 11 receives a detection signal of the engine rotation sensor 3a, that is, a signal indicating the rotation speed N of the engine 3. The engine controller 11 adjusts the low idle rotation speed.

The vehicle body 2 of the construction machine 1 is provided with a GPS (global positioning sensor) sensor 6. The GPS sensor 6 receives a signal sent from a GPS satellite and detects the three-dimensional position P of the vehicle body 2, that is, the latitude, longitude, and altitude. The GPS sensor 6 is connected to the communication controller 12.

The vehicle body 2 of the construction machine 1 is provided with transmission / reception means 7. The transmission / reception means 7 transmits / receives data to / from the ground station 130 via the antenna 7a. The transmission / reception means 7 is controlled by the communication controller 12.

A monitor panel 8 is provided in the driver's seat of the vehicle body 2 of the construction machine 1. The monitor panel 8 is provided with a display 8a. Information necessary for the driver is displayed on the display 8 a of the monitor panel 8. The monitor panel 8 is controlled by the monitor controller 13.

In the vehicle body 2 of the construction machine 1, an engine controller 11, a communication controller 12, and a monitor controller 13 are connected in a daisy chain by a signal line 14 so that serial communication is possible. Is configured. The actual construction machine 1 includes a controller other than the engine controller 11, the communication controller 12, and the monitor controller 13. However, FIG. 1 shows only a portion related to the present invention.

A frame signal of a predetermined protocol, for example, a CAN (private) frame signal is transmitted on the signal line 14. When the frame signal is transmitted to each of the controllers 11, 12, 13, the control target device, actuator (engine 3, transmission / reception means 7, monitor panel 8) connected to each controller 11, 12, 13 according to the data described in the frame signal. Drive signals are output to the respective controlled devices and actuators, and are detected by the sensors (engine rotation sensor 3a, GPS sensor 6, etc.) connected to the controllers 11, 12, 13 Data indicating detection data or information inside the control target device is acquired and described in the frame signal.

  The instantaneous fuel consumption F, the engine operation time SMR, the actual operation time RSMR, the engine speed, and the like acquired by each controller described above are described in a frame signal and sent to the communication controller 12 via the signal line 14.

The communication controller 12 takes out the data described in the frame signal.

The communication controller 12 performs processing for processing data acquired in the vehicle body into a format suitable for processing in the ground station 130. That is, in the communication controller 12, the average fuel consumption amount AF (unit: L / h) is obtained by averaging the instantaneous fuel consumption amount F acquired within a certain period. Further, the communication controller 12 obtains an operation map MP and an actual operation map RMP (FIG. 3) based on the engine operation time SMR and the actual operation time RSMR. Further, the communication controller 12 calculates the engine speed N at each time of the operation map MP and the actual operation map RMP.

Thus, the position P of the construction machine 1, the average fuel consumption AF, the engine operation time SMR, the operation map MP, the actual operation map RMP, and the engine speed N are acquired as the vehicle interior information DT. The vehicle body internal information DT is associated with information of transmission time t (data indicating year, month, day, hour, minute, second) and an identification ID for identifying and identifying the construction machine 1 of its own, and transmitting / receiving means 7 Are transmitted to the ground station 130 via the antenna 7a. Here, for example, if the construction machine 1 is a manufacturing serial number “123” of a model “PC200-8” of a hydraulic excavator, the identification ID has data of “PC200-8-123”.

The transmission of the vehicle interior information DT is performed at regular time intervals and / or at each event timing. The transmission at regular intervals is, for example, transmission every time it is 1:00 in the night or 12:00 noon. The transmission for each event is, for example, transmission every time an error occurs in the vehicle body or the construction machine 1 moves a certain distance.

A ground station 130 is provided at a location away from the vehicle body 2 of the construction machine 1. The ground station 130 includes a transmission / reception means 50 and a server 131.

A terminal 140 is provided at a location away from the vehicle body 2 of the construction machine 1 and the server 131 of the ground station 130.

  The transmission / reception means 7 of the construction machine 1 and the transmission / reception means 50 of the ground station 130 are communicably connected by a wired or wireless communication line 21. The server 131 and the terminal 140 of the ground station 130 are communicatively connected via a wired or wireless communication line 22, such as the Internet, via a transmission / reception means (not shown).

The server 131 functions as an HTTP (Hyper Text Transfer Protocol) server to provide WWW (World Wide Web) services. The server 131 displays an Internet information screen described in HTML (Hiber Text Markup Language) on the display device of the requesting terminal 140.

  The server 131 of the ground station 130 includes a database unit 30 and an arithmetic processing unit 40. The database unit 30 includes a reference fuel consumption database 31, a position correspondence information database 32, and a fuel consumption correction information database 33. The arithmetic processing unit 40 includes a determination unit 41, a position information conversion unit 42, and a fuel consumption correction command creation unit 43.

FIG. 2 shows the contents of data stored in the reference fuel consumption database 31.

As shown in FIG. 2, the reference fuel consumption database 31 is created based on internal information of a plurality of construction machines 1, 1, 1,. The reference fuel consumption database 31 stores reference fuel consumption corresponding to each condition. For example, the reference fuel consumption database 31 stores reference fuel consumption corresponding to each altitude AL, that is, average fuel consumption AFc (unit L / h) of a plurality of construction machines 1, 1, 1,. Has been. In this embodiment, the average fuel consumption map for each altitude is stored in the reference fuel consumption database 31. The average fuel consumption map for each altitude shows the average fuel consumption amount AFc for each model of the construction machine 1 and for each altitude level.

The altitude AL is classified into 100 m increments such as “0 m level” (0 m or more and less than 100 m), “100 m level” (100 m or more and less than 200 m), “200 m level” (200 m or more and less than 300).

The construction machines 1, 1, 1... Are classified into various types such as hydraulic excavators PC60, PC200 (-8), PC400, bulldozers D60, D155, wheel loaders WA380, dump trucks HD785. ing.

The position correspondence information database 32 stores information on the temperature TP and / or the altitude AL corresponding to each position P. In the present embodiment, altitude map information and average temperature map information are stored in the position correspondence information database 32. The altitude map information is map information that can determine the altitude AL at the point corresponding to the latitude and longitude. The average temperature map information is map information that can determine the past average temperature TP of the point at the month and date corresponding to the latitude, longitude, and month and date (time t).

The fuel consumption correction information database 33 stores fuel consumption correction information for correcting the fuel consumption of the construction machine 1 according to the temperature TP or / and the altitude AL. The fuel consumption correction information database 33 includes an optimal warm-up database 33A and an optimal fuel injection amount database 33B for each altitude. The optimum warm-up database 33A stores the optimum warm-up time bτ and the optimum warm-up speed bNL corresponding to each average temperature TP. Here, the warm-up time τ is the time from the first start of the engine 3 of the construction machine 1 to the start of the operation of the work machine 5 in one day. The optimum warm-up time bτ is the warm-up time τ that can reduce the average daily fuel consumption AF most. The warm-up speed NL is the engine speed N during the warm-up time τ. The optimum warm-up speed bNL is the warm-up speed NL that can reduce the average daily fuel consumption AF most.

The optimum fuel injection command database 33B for each altitude stores the optimum fuel injection amount and fuel injection timing that can minimize the fuel consumption amount F corresponding to each altitude AL.

Hereinafter, the processing procedure in the present embodiment will be described with reference to the flowcharts shown in FIGS. The processing shown in FIGS. 4 and 5 is performed by the arithmetic processing unit 40.

(Transmission of vehicle interior information)
The vehicle body internal information DT is transmitted from the transmission / reception means 7 of the construction machine 1 to the transmission / reception means 50 of the ground station 130 in association with the information at the transmission time t and the ID information at regular time intervals and / or events (step 201). ).

(Reception of vehicle interior information)
The transmission / reception means 50 of the ground station 130 receives the vehicle interior information DT (step 202).

(Location information conversion process)
The arithmetic processing unit 40 of the ground station 130 extracts the latitude, longitude, and altitude AL information included in the information on the position P sent from the construction machine 1 that is the transmission source. In addition, when the content of the information on the position P is only latitude and longitude and information on the altitude AL is not included, the position information conversion means 42 of the arithmetic processing unit 40 determines the latitude and longitude of the construction machine 1 that is the transmission source. Based on the altitude map information in the position correspondence database 32, the latitude and longitude of the construction machine 1 are converted into altitude AL information at that point.

In the database 30 of the ground station 130, the latitude, longitude, altitude AL, average fuel consumption AF, engine operation time SMR, operation map MP, actual operation map RMP, and engine speed N of the source construction machine 1 are stored. These are stored in storage locations corresponding to their own identification IDs (step 203).

(Process of updating the contents of the standard fuel consumption database)
Next, the average fuel consumption map for each elevation in the reference fuel consumption database 31 is updated based on the identification ID, altitude AL, and average fuel consumption AF of the construction machine 1 that is the transmission source. That is, for example, assuming that the identification ID of the construction machine 1 as the transmission source is “PC200-8-123” and the altitude AL is 1050 m (1000 m or more and less than 1100 m), as shown in FIG. 2, the model “PC200-8” ”And the average fuel consumption AFc for the altitude“ 1000 m level ”(from 1000 m to less than 1100 m) are recalculated using the average fuel consumption AF of the construction machine 1 that is the transmission source, and the average fuel consumption AFc at the corresponding location is calculated. Is updated.

The content of the reference fuel consumption database 31 may be updated every time the vehicle body internal information DT transmitted from the construction machine 1 as the transmission source is received by the ground station 130, and at a timing different from the data reception. May be. For example, data received from the construction machine 1 may be stored and performed periodically (for example, once a week, once a month, at a fixed time every day) (step 204).

(Judgment process)
Next, in the determination means 41, based on the internal information DT of the transmission source construction machine 1 and the reference fuel consumption database 31, the average fuel consumption amount AF of the transmission source construction machine 1 and the reference average fuel consumption amount. It is determined whether or not the fuel consumption F of the construction machine 1 that is the transmission source is to be corrected by comparing AFc with the same condition. In the present embodiment, as shown in FIG. 2, the average fuel consumption AF of the source construction machine 1 and the reference fuel consumption (average fuel consumption) AFc are the same elevation condition (“1000 m level”). Whether or not the fuel consumption amount F of the construction machine 1 that is the transmission source is to be corrected is determined in comparison with the condition of the same model (“PC200-8”). For example, if the average fuel consumption AF of the source construction machine 1 is less than the reference fuel consumption (average fuel consumption) AFc, it is determined that “correction is not necessary” and the reference fuel consumption is If (average fuel consumption) AFc or more, it is determined that “correction” should be made (step 205).

As a result, when it is determined that it is not necessary to correct the fuel consumption amount F of the transmission source construction machine 1 (determination NO in step 205), the process is finished, but the fuel consumption amount of the transmission source construction machine 1 is completed. If it is determined that F should be corrected (YES at step 205), the process proceeds to the process shown in FIG. 5 and a fuel consumption correction command for correcting the fuel consumption is generated. This is performed by the fuel consumption correction command creating means 43. The created fuel consumption amount correction command is transmitted to the construction machine 1 by the transmission / reception means 50.

(Fuel consumption correction command creation processing and transmission processing)
That is, as shown in FIGS. 3A and 3B, the warm-up time τ of the source construction machine 1 is calculated using the operation map MP and the actual operation map RMP of the source construction machine 1. . Further, the warm-up speed NL is obtained from the engine speed N during the operation time τ (step 301).

Next, in the location information conversion means 42, based on the latitude and longitude data of the source construction machine 1, the data of the transmission time t, and the average temperature map information in the location correspondence database 32, the source construction machine Information on the latitude and longitude of 1 is converted into information on the average temperature TP. That is, the month and date (data transmission time t) when data is transmitted from the construction machine 1 that is the transmission source, and the average temperature TP at the point (latitude and longitude) of the construction machine 1 that is the transmission source are obtained. However, if the date and time when the data is transmitted from the construction machine 1 that is the transmission source and the current temperature at the location (latitude and longitude) of the construction machine 1 that is the transmission source can be obtained from other information sources such as the website of the Japan Meteorological Agency, It is not necessary to use the average temperature map information (step 302).

Next, based on the average temperature TP at the point of the source construction machine 1 and the optimum warm-up database 33A, the optimum warm-up time bτ and the optimum warm-up corresponding to the average temperature TP at the point of the source construction machine 1 The machine speed bNL is calculated (step 303).

Next, the optimum warm-up time bτ and optimum warm-up rotation speed bNL obtained in step 303 are compared with the current warm-up time τ and warm-up revolution speed NL of the transmission source construction machine 1 obtained in step 301. Is done. For example, if the warm-up time τ is equal to or greater than the optimal warm-up time bτ, it is determined that the warm-up time τ is appropriate. If the warm-up time τ is less than the optimal warm-up time bτ, the warm-up time τ is short. Judged to be inappropriate. If the warm-up speed NL is equal to or greater than the optimum warm-up speed bNL, it is determined that the warm-up speed NL is appropriate. If the warm-up speed NL is less than the optimum warm-up speed bNL, the warm-up speed NL is determined to be appropriate. It is determined that the rotational speed NL is low and inappropriate (steps 304 and 305). A command for making the warm-up time τ and the warm-up rotation speed NL appropriate is generated according to the determination result (steps 308, 309, and 310).

First, when the warm-up speed NL is appropriate and the warm-up time τ is short and inappropriate (YES at step 304), a message indicating that the warm-up time τ is increased and the optimum warm-up time bτ A display command for displaying a numerical value is sent to the transmission / reception means 50 of the ground station 130. Thereafter, the display command is transmitted from the transmission / reception means 50 of the ground station 130 to the transmission / reception means 7 of the construction machine 1 via the communication line 21. The display command received by the transmission / reception means 7 of the construction machine 1 is sent from the communication controller 12 to the monitor controller 13 via the signal line 14. In accordance with the display command, the monitor controller 13 displays on the display 8a of the monitor panel 8 that “the warm-up time is longer, the proper warm-up time is XXX time or more” (step 308).

On the other hand, if the warm-up speed NL is appropriate and the warm-up time τ is short and inappropriate (NO in Step 304), then the warm-up time τ is appropriate, It is determined whether or not warm-up speed NL is low and inappropriate (step 305).

As a result, when the warm-up time τ is appropriate and the warm-up speed NL is low and inappropriate (YES in Step 305), the low idle speed NL during the warm-up time τ is set to the optimum warm-up speed bNL. A low idle rotation speed adjustment command for increasing the above is sent to the transmission / reception means 50 of the ground station 130. Thereafter, the low idle rotation speed adjustment command is transmitted from the transmission / reception means 50 of the ground station 130 to the transmission / reception means 7 of the construction machine 1 via the communication line 21. The low idle rotation speed adjustment command received by the transmission / reception means 7 of the construction machine 1 is sent from the communication controller 12 to the engine controller 11 via the signal line 14. The engine controller 11 adjusts the engine speed at the time of low idling so that the low idling speed NL during the warm-up time τ rises to the optimum warm-up speed bNL or more according to the low idle speed adjustment command (step 309). ).

Next, when it is not that “the warm-up time τ is appropriate and the warm-up speed NL is low and inappropriate” (NO in Step 305), then the warm-up time τ and the warm-up rotation It is determined whether both of the number NL are appropriate or whether both the warm-up time τ and the warm-up rotation speed NL are inappropriate (step 306).

As a result, when both the warm-up time τ and the warm-up rotation speed NL are inappropriate (judgment of step 306 “both improper”), a message indicating that the warm-up time τ is lengthened and the optimal warm-up A display command for displaying the numerical value of time bτ and a low idle rotation speed adjustment command for increasing the low idle rotation speed NL during the warm-up time τ to the optimum warm-up rotation speed bNL or more are sent to the transmission / reception means 50 of the ground station 130. Sent out. Thereafter, the display command and the low idle rotation speed adjustment command are transmitted from the transmission / reception means 50 of the ground station 130 to the transmission / reception means 7 of the construction machine 1 via the communication line 21. The display command received by the transmission / reception means 7 of the construction machine 1 is sent from the communication controller 12 to the monitor controller 13 via the signal line 14. In accordance with the display command, the monitor controller 13 displays on the display 8a of the monitor panel 8 that “the longer the warm-up time is, the proper warm-up time is more than XXX time”. The low idle rotation speed adjustment command received by the transmission / reception means 7 of the construction machine 1 is sent from the communication controller 12 to the engine controller 11 via the signal line 14. The engine controller 11 adjusts the engine speed during low idling so that the low idling speed NL during the warm-up time τ rises above the optimum warm-up speed bNL in accordance with the low idle speed adjustment command (step 310). ).

On the other hand, when both the warm-up time τ and the warm-up rotation speed NL are appropriate (judgment of step 306 “both appropriate”), the altitude AL of the source construction machine 1 and the optimum fuel injection command database for each altitude Based on 33B, the optimal fuel injection amount and the optimal fuel injection timing corresponding to the altitude AL of the construction machine 1 that is the transmission source are calculated. Then, an optimal fuel injection command for injecting fuel into the engine 3 at the optimal combustion injection amount and optimal fuel injection timing is created and sent to the transmission / reception means 50 of the ground station 130. Thereafter, the optimum fuel injection command is transmitted from the transmission / reception means 50 of the ground station 130 to the transmission / reception means 7 of the construction machine 1 via the communication line 21. The optimum fuel injection command received by the transmission / reception means 7 of the construction machine 1 is sent from the communication controller 12 to the engine controller 11 via the signal line 14. The engine controller 11 adjusts the fuel injection device 4 according to the optimal fuel injection command, and controls the fuel injection amount and the fuel injection timing to the optimal fuel injection amount and the optimal injection timing (step 307).

  Various modifications can be made to the above-described embodiment.

In the above-described embodiment, as shown in FIG. 2, the content of the reference fuel consumption database 31 is an average fuel consumption map for each altitude, and the average fuel consumption AFc for each altitude level is stored for each model of the construction machine 1. Explained as being.

However, the reference fuel consumption database 31 is created based on the internal information DT of the plurality of construction machines 1, 1, 1,..., And stores the reference fuel consumption corresponding to each condition. If it is, As each condition, in addition to the above-described altitude, a work mode, a load load, an air temperature, and the like can be considered.

For example, in a hydraulic excavator or the like, various work modes are selected according to the magnitude of work load, and the maximum torque of the engine 3 changes accordingly, thereby changing the fuel consumption. Therefore, with the work mode as one of the conditions, the work mode information is included in the internal information DT and transmitted from the construction machine 1 to the ground station 130, and the reference average fuel consumption amount AFc is associated with each work mode. A reference fuel consumption database 31 may be created.

Similarly, in a dump truck or the like, the fuel consumption varies depending on the amount of product load. Therefore, assuming the product load amount as one of the conditions, the information on the product load amount is included in the internal information DT and transmitted from the construction machine 1 to the ground station 130, and the reference average fuel consumption amount AFc is associated with each product load amount. A reference fuel consumption database 31 may be created.

In the embodiment, the reference fuel consumption database 31 is created in consideration of the altitude, but the reference fuel consumption database 31 may be created in consideration of the temperature. That is, the average fuel consumption amount AFc may be stored for each model of the construction machine 1 and for each temperature, and the average fuel consumption amount AFc may be stored for each model, each altitude, and each temperature.

In the embodiment, the fuel consumption correction information database 33 includes an optimum warm-up database 33A and an optimum fuel injection amount database 33B for each altitude, and the fuel consumption F of the construction machine 1 according to the temperature TP and the altitude AL. It has been described that fuel consumption correction information (optimum warm-up time bτ, optimum warm-up rotation speed bNL, optimum fuel injection amount, optimum fuel injection timing) is stored. However, this is only an example, and it is possible to store fuel consumption correction information (optimum warm-up time bτ, optimum warm-up speed bNL) according to only the temperature TP, and fuel consumption according to only the altitude AL. It is also possible to store the amount correction information (optimum fuel injection amount, optimum fuel injection timing).

Similarly, it has been described that the fuel consumption correction command creating means 43 creates a fuel consumption correction command (display command, low idle rotation speed adjustment command, optimum fuel injection command) according to the temperature TP and the altitude AL. However, it is also possible to create a fuel consumption correction command (display command, low idle rotation speed adjustment command) according to only the temperature TP, and a fuel consumption correction command (optimum fuel injection command) only according to the altitude AL. It is also possible to create

FIG. 1 is a diagram showing an overall apparatus configuration of the embodiment. FIG. 2 is a diagram showing the contents of data stored in the reference fuel consumption database. 3A and 3B are diagrams illustrating an operation map and an actual operation map of the construction machine. FIG. 4 is a flowchart illustrating a processing procedure in the embodiment. FIG. 5 is a flowchart showing a processing procedure in the embodiment.

Explanation of symbols

100 transmission / reception system, 1 construction machine, 130 ground station, 31 reference fuel consumption database, 32 position correspondence information database, 33 fuel consumption correction information database, 41 determination means, 42 position information conversion means, 43 fuel consumption correction command creation Means, 50 transmission / reception means

Claims (7)

The internal information of the construction machine including at least the position of the construction machine is transmitted from the plurality of construction machines to the ground station, and the ground station receives and processes the internal information of the plurality of construction machines, and the ground station according to the processing result. The command is sent to the individual construction machine from, and the individual construction machine is applied to the transmission / reception system of the construction machine that performs processing based on the received command.
The construction machine transmits internal information including location and fuel consumption to the ground station as internal information,
The ground station
A reference fuel consumption database created based on internal information of a plurality of construction machines and storing a reference fuel consumption corresponding to each condition;
A position correspondence information database storing temperature and / or altitude information corresponding to each position;
A fuel consumption correction information database storing fuel consumption correction information for correcting the fuel consumption of the construction machine according to the temperature or / and altitude;
Based on the internal information of the source construction machine and the reference fuel consumption database, the fuel consumption of the source construction machine is compared with the fuel consumption of the source construction machine and the reference fuel consumption under the same conditions. A determination means for determining whether or not to correct the consumption;
Position information conversion means for converting the position of the transmission source construction machine into the temperature or / and altitude information at the location of the transmission source construction machine based on the position of the transmission source construction machine and the position correspondence database;
When it is determined that the fuel consumption of the source construction machine should be corrected, based on the temperature or / and altitude information at the location of the source construction machine and the fuel consumption correction information database, A fuel consumption correction command creating means for creating a fuel consumption correction command according to the temperature or / and altitude at the point of the construction machine;
A fuel consumption correction apparatus in a transmission / reception system for a construction machine, comprising: a transmission unit that transmits a created fuel consumption correction command to a construction machine that is a transmission source. The internal information of the construction machine including at least the position of the construction machine is transmitted from the plurality of construction machines to the ground station, and the ground station receives and processes the internal information of the plurality of construction machines, and the ground station according to the processing result. The command is sent to the individual construction machine from, and the individual construction machine is applied to the transmission / reception system of the construction machine that performs processing based on the received command.
The construction machine has internal information as internal information, including position, fuel consumption, warm-up time from engine start to operation of the work equipment, and warm-up speed indicating the engine speed during the warm-up time. To send to
The ground station
A reference fuel consumption database created based on internal information of a plurality of construction machines and storing a reference fuel consumption corresponding to each condition;
A position correspondence information database storing temperature information corresponding to each position;
An optimal warm-up database storing the optimal warm-up time and the optimal warm-up speed corresponding to each temperature,
Based on the internal information of the source construction machine and the reference fuel consumption database, the fuel consumption of the source construction machine is compared with the fuel consumption of the source construction machine and the reference fuel consumption under the same conditions. A determination means for determining whether or not to correct the consumption;
Based on the position of the transmission source construction machine and the position correspondence information database, the position information conversion means for converting the position of the transmission source construction machine into the temperature information at the point of the transmission source construction machine,
When it is determined that the fuel consumption of the source construction machine should be corrected, based on the temperature information at the source construction machine point and the optimal warm-up database, the temperature at the source construction machine point The optimal warm-up time and the optimal warm-up speed are determined according to the actual warm-up time, the optimal warm-up speed, and the current warm-up time and warm-up speed of the source construction machine. A fuel consumption correction command creating means for creating a command for correcting the fuel consumption according to the comparison result;
A fuel consumption correction apparatus in a transmission / reception system for a construction machine, comprising: a transmission unit that transmits the created fuel consumption correction command to a construction machine that is a transmission source. The standard fuel consumption database stores the standard fuel consumption corresponding to each altitude.
The judging means is to judge whether or not to correct the fuel consumption of the source construction machine by comparing the fuel consumption of the source construction machine and the reference fuel consumption under the same altitude. The fuel consumption correction apparatus for a construction machine transmission / reception system according to claim 1, wherein When the fuel consumption correction command creating means determines that the fuel consumption of the source construction machine should be corrected, the command for correcting the fuel injection of the engine according to the altitude at the point of the source construction machine The fuel consumption correction device in the construction machine transmission / reception system according to claim 1, wherein When the fuel consumption correction command creation means determines that the fuel consumption of the transmission source construction machine should be corrected, the operation of the work machine starts from the engine start according to the temperature at the location of the transmission source construction machine. The fuel in the transmission / reception system for a construction machine according to claim 1, wherein a command for making the warm-up speed appropriate for the warm-up time until the engine warm-up time and the engine speed in the warm-up time is created. Consumption correction device. The construction machine transmits GPS position information including position information of latitude, longitude, and altitude to the ground station,
The position correspondence information database stores temperature information corresponding to each position.
The position information conversion means converts the position of the transmission source construction machine into information on the temperature at the point of the transmission source construction machine based on the position of the transmission source construction machine and the position correspondence database. The fuel consumption correction apparatus for a transmission / reception system for a construction machine according to claim 1. The construction machine has information on a combination of operation map information indicating a time period in which the engine is operating and actual operation map information indicating a time period in which the engine is operating and the work machine is operating, as a warm-up time. The fuel consumption correction device in the construction machine transmission / reception system according to claim 2, wherein the information is transmitted to the ground station.

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