WO2016121047A1 - 識別情報取得システム及び作業車両 - Google Patents
識別情報取得システム及び作業車両 Download PDFInfo
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- WO2016121047A1 WO2016121047A1 PCT/JP2015/052460 JP2015052460W WO2016121047A1 WO 2016121047 A1 WO2016121047 A1 WO 2016121047A1 JP 2015052460 W JP2015052460 W JP 2015052460W WO 2016121047 A1 WO2016121047 A1 WO 2016121047A1
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- Prior art keywords
- information
- identification
- reader
- identification information
- communication device
- Prior art date
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Images
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/77—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for interrogation
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C5/0841—Registering performance data
- G07C5/085—Registering performance data using electronic data carriers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10366—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications
- G06K7/10475—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications arrangements to facilitate interaction with further interrogation devices, e.g. such that at least two interrogation devices may function and cooperate in a network of such devices
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/008—Registering or indicating the working of vehicles communicating information to a remotely located station
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C5/0808—Diagnosing performance data
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C5/0816—Indicating performance data, e.g. occurrence of a malfunction
- G07C5/0825—Indicating performance data, e.g. occurrence of a malfunction using optical means
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3822—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving specially adapted for use in vehicles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/26—Indicating devices
Definitions
- the present invention relates to an identification information acquisition system and a work vehicle including the identification information acquisition system.
- the controller issues an engine stoppage or a warning by monitoring.
- the controller stores the filter installation time and calculates the next replacement time to notify the operator. Further, the controller stores the presence / absence of replacement of the genuine filter and the number of replacements.
- a configuration is known in which a plurality of interrogators (readers) are provided, and each interrogator receives information from a responder (IC tag) (see, for example, Patent Document 2).
- a plurality of interrogators each configured to be able to receive information from a responder are arranged such that respective authentication areas are set close to each other.
- at least two of the plurality of interrogators may receive a response signal from a responder in another authentication area as well as a responder in its own authentication area.
- each interrogator transmits an interrogation signal by shifting transmission timing.
- the amount of transmission timing deviation is set to a time longer than the time required for the responder to start upon receiving the inquiry signal and return the response signal.
- each interrogator can receive the response signal with respect to the interrogation signal from the said interrogator from the responder located in an own authentication area.
- Patent Document 2 describes that one interrogator serves as a master and synchronizes each interrogator.
- An identification information acquisition system is an identification information acquisition system provided in a work vehicle, and includes a plurality of identification devices and a plurality of communication devices that communicate with the plurality of identification devices.
- the plurality of communication devices include a first communication device and a second communication device whose operation is controlled by the first communication device, wherein the first communication device is the second communication device in the work vehicle. It arrange
- the part whose temperature is lower than the part where the second communication device is arranged indicates a part whose temperature is lower than the part where the second communication device is arranged during normal use of the work vehicle.
- the first communication device that controls the second communication device is disposed in a part of the work vehicle where the temperature is lower than the part where the second communication device is disposed.
- the 1st communication apparatus can be arrange
- the work vehicle includes an engine room in which an engine is arranged, and a pump room that is provided separately from the engine room and in which a hydraulic pump is arranged, It is desirable that the first communication device is disposed in the pump room and the second communication device is disposed in the engine room.
- An example of the hydraulic pump is a pump that circulates oil in the engine and supplies fuel to the engine.
- the first communication device is disposed in the pump room and the second communication device is disposed in the engine room, communication is performed with the identification device attached to the components disposed in the engine room and the pump room. it can. At this time, since the temperature of the pump room is lower than that of the engine room, the first communication device can be stably operated, and the second communication device can be reliably and appropriately controlled.
- the identification information acquisition system includes a control device that controls the operation of the first communication device, and the first communication device determines whether or not the second communication device is operating normally. And a movement information transmission for transmitting movement information indicating that the second communication apparatus is not operating normally to the control apparatus when it is determined that the second communication apparatus is not operating normally. Means.
- the operation information is transmitted to the control device by the first communication device.
- the control device can grasp the operation state of the second communication device based on the transmitted operation information.
- the identification information acquisition system includes a processing device that processes information acquired by the plurality of communication devices, the plurality of identification devices communicating with the first communication device, and first identification information And a second identification device that communicates with the second communication device and retains second identification information.
- the first communication device is configured by the first communication device.
- Information holding means for holding the first identification information acquired from the identification device and the second identification information acquired from the second identification device by the second communication device, and held by the information holding means It is desirable to have identification information transmitting means for transmitting the first identification information and the second identification information to the processing device.
- the first communication device not only controls the operation of the second communication device, but is also acquired by the second communication information and the second identification information acquired by the second communication device.
- the first identification information is transmitted in a lump. According to this, compared with the case where a 1st communication apparatus and a 2nd communication apparatus transmit 1st identification information and 2nd identification information separately, the transmission frequency of the identification information from each communication apparatus can be reduced.
- a work vehicle includes the identification information acquisition system. According to the said 2nd aspect, there can exist an effect similar to the identification information acquisition system which concerns on the said 1st aspect.
- a work vehicle includes an engine room in which an engine is disposed, a pump room that is provided separately from the engine room, has a temperature lower than the engine room, and in which a hydraulic pump is disposed; A first identification device that holds identification information, a second identification device that holds second identification information, and a first identification device that is disposed in the pump room and that communicates with the first identification device to obtain the first identification information.
- a processing device that processes the first identification information and the second identification information, wherein the first communication device determines whether or not the second communication device is operating normally.
- operation information transmitting means for transmitting operation information indicating that the second communication device is not operating normally to the processing device
- first identification Identification information transmitting means for transmitting the first identification information acquired from the apparatus and the second identification information acquired from the second identification apparatus by the second communication apparatus to the processing apparatus.
- FIG. 1 is a perspective view showing a hydraulic excavator as a work vehicle according to an embodiment of the present invention.
- Schematic which shows a machine room.
- Schematic which shows the inside of a pump room.
- Schematic which shows the structure of an IC tag.
- the block diagram which shows the structure of a hydraulic excavator, and the schematic structure of an identification information acquisition system.
- the block diagram which shows the structure of a leader (master).
- the block diagram which shows the structure of a leader (slave).
- the flowchart which shows the information collection process for acquiring identification information.
- the flowchart which shows the information acquisition process for acquiring identification information.
- the flowchart which shows the information transmission process for acquiring identification information.
- the conceptual diagram explaining the information collection process for acquiring identification information The conceptual diagram explaining the information collection process for acquiring identification information.
- FIG. 1 is a perspective view showing a hydraulic excavator 1 as an example of a work vehicle of the present invention.
- the excavator 1 includes a vehicle body 2 and a work implement 3 as shown in FIG.
- the vehicle body 2 includes a traveling device 4 and an upper swing body 5.
- the side on which the work implement 3 and the operator cab 5B are arranged is the front
- the side on which the machine room 5A is arranged is the rear.
- the left side toward the front is the left of the upper swing body 5, and the right side toward the front is the right of the upper swing body 5.
- the excavator 1 and the vehicle main body 2 are on the lower side of the traveling device 4 with respect to the upper swing body 5, and the upper side of the upper swing body 5 with respect to the traveling device 4.
- the lower side is the vertical direction, that is, the gravity direction side
- the upper side is the opposite side of the vertical direction.
- the hydraulic excavator 1 uses, for example, an internal combustion engine such as a diesel engine as a power generation device, but the hydraulic excavator 1 is not limited to such a configuration.
- the hydraulic excavator 1 may be, for example, a so-called hybrid power generator that combines an internal combustion engine, a generator motor, and a power storage device, or a power generator that replaces the internal combustion engine with an electric motor. Good.
- FIG. 2 is a schematic view showing the machine room 5A.
- the upper swing body 5 includes a machine room 5A, a driver's cab 5B, and a counterweight 5C.
- the machine room 5 ⁇ / b> A is disposed on one end side (rear side) of the upper swing body 5.
- the interior of the machine room 5A is partitioned into a pump room 5A1 and an engine room 5A2 by a partition wall 5A3.
- the pump room 5A1 is on the right side and the engine room 5A2 is on the left side. To position.
- the engine room 5A2 houses a cooling unit CU including a cooling core CC such as a radiator in addition to an engine EG serving as a power generation device.
- the cooling unit CU is disposed adjacent to the engine EG, and cools cooling water flowing through the engine EG, hydraulic oil flowing through hydraulic equipment (not shown), and the like.
- the engine EG is surrounded on all sides by a counterweight 5C, a partition on the front side of the engine room 5A2, a partition 5A3 separating the pump room 5A1 on the right side and the engine room 5A2 on the left side, and a left door (not shown).
- a filter 20C and an identification device 30C that are fuel main filters, an identification device 30D attached to the engine EG, and a reader 15B that communicates with the identification devices 30C and 30D are provided. These will be described in detail later.
- the cab 5B is placed on the other end side (front side) of the upper swing body 5 as shown in FIG.
- the counterweight 5C is provided at the rearmost part of the upper swing body 5.
- the counterweight 5C is provided for weight balance with the work machine 3, and is filled with heavy objects. That is, the machine room 5A is disposed between the cab 5B and the counterweight 5C.
- the traveling device 4 has crawler belts 4a and 4b.
- the traveling device 4 is driven or rotated by the hydraulic motor (not shown) and the crawler belts 4a and 4b rotating.
- the working machine 3 is attached to the side of the cab 5B of the upper swing body 5 and includes a boom 6, an arm 7, a bucket 8, a boom cylinder 6A, an arm cylinder 7A, and a bucket cylinder 8A.
- a base end portion of the boom 6 is coupled to a front portion of the vehicle main body 2 via a boom pin 6B, and the boom 6 is operably attached.
- the base end portion of the arm 7 is coupled to the distal end portion of the boom 6 via the arm pin 7B, and the arm 7 is operably attached.
- a bucket 8 is coupled to the tip of the arm 7 via a bucket pin 8B, and the bucket 8 is operably attached.
- FIG. 3 is a view showing the inside of the pump room 5A1 in a state where a door (not shown) is opened from the right side of the upper swing body 5.
- FIG. 3 is a schematic diagram showing an arrangement state of the filters 20A and 20B and the leader 15A in the pump room 5A1.
- the pump room 5A1 is surrounded on all sides by a right door (not shown), a counterweight 5C, a partition wall on the front side of the pump room 5A1, and a partition wall 5A3 separating the engine room 5A2, and an engine disposed above. It is a substantially sealed space surrounded by a top plate including a hood and a bottom plate (each not shown). As shown in FIG.
- the hydraulic pump PN is accommodated in the pump room 5A1, but the pump room 5A1 does not have a heat source that easily heats up the space as compared to the engine room 5A2. That is, the hydraulic pump PN or the like housed in the pump room 5A1 has less heat radiated to the space than the engine EG.
- the top plate located directly above the pump room 5A1 can be formed with, for example, a slit-shaped vent hole, and the heat in the pump room 5A1 can be radiated from the vent hole. Further, as described above, the pump room 5A1 is separated from the outside air by at least the right door (the door located on the side opposite to the partition wall 5A3), but the heat in the pump room 5A1 is passed through the door.
- the hydraulic pump PN accommodated in the pump room 5A1 is mechanically connected to the engine EG and driven by driving the engine EG.
- the hydraulic pump PN discharges hydraulic oil to hydraulic equipment such as the boom cylinder 6A.
- the pump room 5A1 is provided with a bracket 11A on which the hydraulic pump PN is installed.
- a filter head 13A which is a filter holding component, is attached to the bracket 11A, and a hose 14A is attached to the filter head 13A.
- a filter head 13B is attached to the pump room 5A1 via a bracket 11B, and a fuel hose 14B is attached to the filter head 13B.
- a filter 20A is attached to the filter head 13A.
- the filter 20A is an oil filter for engine oil, and removes dust and the like contained in the engine oil flowing through the hose 14A.
- the filter 20A is connected to the engine EG (see FIG. 2) via the hose 14A.
- the engine oil staying in the engine EG is pumped up by the pump and sent to the filter 20A.
- the engine oil that has passed through the filter 20A is returned to the engine EG again.
- a filter 20B is attached to the filter head 13B.
- the filter 20B is a fuel prefilter and removes dust and the like contained in the fuel that has flowed to the fuel hose 14B.
- the filter 20B is not essential for the hydraulic excavator 1, and may be the hydraulic excavator 1 that does not include the filter 20B.
- the filter 20B (fuel prefilter) is connected to a fuel tank (not shown) via a hose 14B. Fuel in a fuel tank (not shown) is sent to the filter 20B. Thereafter, the fuel is sent to the filter 20C (fuel main filter), and the fuel that has passed through the filter 20C is sent to a fuel injection device (not shown). The excess fuel in the fuel injection device is returned to the fuel tank via a hose (not shown).
- the filters 20A and 20B are provided in the pump room 5A1, and the filter 20C is provided in the engine room 5A2.
- Each filter 20 (20A, 20B, 20C) is a part that needs to be replaced periodically because the internal filter member is clogged by use.
- the arrival of the regular replacement time is determined based on, for example, the cumulative operation time indicated by the SMR (service meter) that measures the operation time of the engine of the hydraulic excavator 1.
- SMR service meter
- Identification devices 30A, 30B, and 30C are attached to these filters 20A, 20B, and 20C.
- the identification device 30D is attached to the engine EG. That is, the filters 20A, 20B, 20C and the engine EG correspond to attached parts to which the identification device 30 (30A, 30B, 30C, 30D) is attached.
- the identification device 30 (30A, 30B, 30C, 30D) stores and provides information related to a mounted part (including a replacement part and a device such as an engine EG) to which the identification device 30 is attached.
- the identification devices 30A, 30B, and 30C can use a passive type IC tag 301 that generates electric power by electromagnetic induction by microwaves output from the reader 15 (15A, 15B), microwaves, or the like.
- each of the identification devices 30A, 30B, and 30C includes at least one IC tag 301 (see FIG. 4) that is an identification component. For this reason, each of the identification devices 30A, 30B, and 30C may include one IC tag 301 or a plurality of IC tags 301.
- the identification device 30 ⁇ / b> D includes one passive type IC tag 301.
- the IC tag 301 included in the identification device 30D may be the same as or different from the shape and configuration of the IC tag 301 included in the identification devices 30A, 30B, and 30C, and includes at least an IC chip 35 and an antenna 36 described later.
- the identification device 30 includes the passive type IC tag 301, the built-in battery can be made unnecessary, the cost can be reduced, and the malfunction due to running out of the battery can be prevented.
- FIG. 4 is a schematic diagram showing the configuration of the IC tag 301.
- the IC tag 301 is an RFID (Radio Frequency Identification) tag in which an IC chip 35 and an internal antenna 36 are enclosed with package materials 31 and 32.
- the IC tag 301 of the present embodiment can perform communication in a UHF (ultrahigh frequency) band, specifically, a band of 860 to 960 MHz as a communication frequency band.
- the communication frequency band of the RFID tag may be another band.
- the IC chip 35 is connected to the antenna 36.
- the shape and dimensions of the antenna 36 are set so that communication with the readers 15A and 15B is possible.
- the IC chip 35 and the antenna 36 are sandwiched between the package materials 31 and 32.
- FIG. 4 is a view through which the package material 31 is transmitted.
- Such an IC tag 301 is attached to the filters 20A, 20B, 20C and the engine EG using a bonding material such as a double-sided tape or an adhesive.
- the IC chip 35 has a code (TID: Tag Identifier) for identifying the IC chip 35 and a code (EPC: Electronic) for identifying components (for example, the filter 20 and the engine EG) to which the identification device 30 is mounted.
- Component information tag information
- the EPC includes a part name identification number for identifying the name of the part, a product number as type information for identifying the type of the component to which the identification device 30 is attached, a manufacturing date, and individual components among components of the same product number.
- Identification information including a serial number (manufacturing number) as unique information for identifying the information and a supplier code indicating the manufacturer of the part is stored.
- the part name identification number can identify parts such as an oil filter for engine oil, a fuel pre-filter, and a fuel main filter, for example.
- each part is assigned an individual number.
- an individual number assigned to each engine may be used as the part name identification number.
- the component is an engine EG, for example, the number of overhauls of the engine EG is included in the identification information.
- FIG. 5 is a block diagram illustrating the configuration of the excavator 1 and the schematic configuration of the identification information acquisition system 100 including the excavator 1 according to the embodiment of the present invention.
- a reader 15 (15A, 15B) as a communication device that communicates with the identification devices 30A, 30B, 30C, 30D is attached to the machine room 5A.
- Each of these readers 15 reads and acquires component information (hereinafter also referred to simply as “data”) including identification information stored in the IC tags 301 of the identification devices 30A, 30B, 30C, and 30D.
- the reader 15 is described as having a reading function, but a reader / writer having a writing function in addition to the reading function may be used instead of the reader 15.
- the reader 15A corresponds to the first communication device of the present invention and is installed in the pump room 5A1.
- the reader 15A communicates with identification devices 30A and 30B attached to the filters 20A and 20B and assumed to be located within the communication range of the reader 15A under the control of the communication controller 200 described later. Then, the reader 15A performs reading assuming that the component information from the identification devices 30A and 30B can be read. Furthermore, the reader 15A controls the operation of the reader 15B, which is another reader. That is, the reader 15A corresponds to the first communication device of the present invention and functions as a master.
- the reader 15B corresponds to the second communication device of the present invention, and functions as a slave whose operation is controlled by the master.
- the reader 15B performs reading on the assumption that component information can be read from the identification devices 30C and 30D.
- the communication range of the reader 15A indicates a range in which the reader 15A can receive a response signal output from the identification device 30 in response to the radio wave output from the reader 15A.
- the communication range of the reader 15B is the same.
- FIG. 6 is a block diagram showing a configuration of the reader 15A functioning as a master.
- the reader 15A includes an instruction determination unit 151, an information reception unit 152, a slave control unit 153, a reception determination unit 154, an information holding unit 155, an information determination unit 156, a transmission information generation unit 157, and an information transmission unit. 158.
- the instruction determination unit 151 determines whether or not instruction information for instructing acquisition of component information stored in the identification device 30 is input from the communication controller 200 described later.
- the information reception unit 152 outputs a radio wave to the identification device 30 for a predetermined time and receives the radio wave output from the identification device 30.
- the slave control means 153 controls the operation of the reader 15B that functions as a slave. For example, the slave control unit 153 outputs instruction information similar to the instruction information to the reader 15B.
- the reception determination unit 154 determines whether or not the radio wave including the component information stored in the identification device 30 has been received from the identification device 30 according to the radio wave received by the information reception unit 152. In addition, the reception determination unit 154 determines whether or not the component information has been received from the reader 15B within a predetermined time after the instruction information is output by the slave control unit 153, so that the reader 15B operates normally. It is determined whether or not. That is, the reception determination unit 154 corresponds to the determination unit of the present invention.
- the information holding unit 155 determines that the reception determination unit 154 has received the component information from the identification device 30 according to the output radio wave from the information reception unit 152, and from the reader 15 (15B) functioning as a slave.
- the respective component information is held as master side acquisition information (first communication device side acquisition information). That is, the information holding unit 155 is acquired by the reader 15B and the component information (first identification information) acquired from the identification devices 30A and 30B that are assumed to be the acquisition targets of the component information by the reader 15A. That is, the slave-side acquisition information (second communication device-side acquisition information, second identification information) including the component information of the identification devices 30C and 30D acquired by the reader 15B. Hold as.
- the information determination unit 156 determines whether error information is included in the slave-side acquisition information included in the master-side acquisition information held in the information holding unit 155. In addition, the information determination unit 156 performs an overlap determination process for determining whether or not the retained master-side acquisition information includes component information having the same content. In the present embodiment, the information determination unit 156 determines at least component information having the same product number and serial number as component information having the same content (component information having identification information having the same content). However, even if the identification devices 30A, 30B, 30C, and 30D provided in the hydraulic excavator 1 are all different product numbers (type information), the information determination unit 156 matches the product number read by the reader 15A or the reader 15B.
- the information determination unit 156 sets the serial number read by the reader 15A or the reader 15B. If there is matching component information, it may be determined that the component information has the same content (component information having identification information having the same content).
- each of the identification devices 30A, 30B, 30C has at least one IC tag 301.
- one reader 15 may receive component information from a plurality of identification devices 30A, 30B, 30C, or identification device 30D. That is, component information with different contents may be received from each IC tag 301 of the identification device 30.
- component information may be received from one identification device 30 by a plurality of readers 15 (15 ⁇ / b> A, 15 ⁇ / b> B) arranged at different positions. Accordingly, as will be described later with reference to FIGS.
- one reader 15 may receive component information from one IC tag 301 included in one identification device 30, and a plurality of readers 15. May receive component information having the same identification information from one IC tag 301 included in one identification device 30. That is, depending on the communication status between the reader 15 and the identification device 30, component information may be received from an identification device different from the identification device 30 that is assumed to be located within the communication range of the reader 15.
- the information holding unit 155 leaves one of the same content component information. The other process is deleted, and the organizing process (integration process) for integrating the parts information having the same contents is executed. For this reason, the master-side acquisition information held by the information holding unit 155 does not include the same component information.
- the information holding unit 155 deletes one part of the component information determined to have the same content, but deletes the other, but the information holding unit 155 generates the transmission information generation unit 157 without deleting it. The transmission information may not be included.
- the transmission information generating unit 157 generates transmission information including the master side acquisition information held in the information holding unit 155. If the information determination unit 156 determines that the same part information is included, the transmission information generation unit 157 generates transmission information including the master side acquired information after the organizing process. Further, when the reception determination unit 154 determines that the component information of the identification devices 30A and 30B has not been acquired, the transmission information generation unit 157 includes information indicating its own reader 15 (15A) and the reader Error information which is operation information including information indicating 15 operation states (information indicating that communication with the identification device 30 could not be performed) is generated.
- the transmission information generation unit 157 determines that the reception determination unit 154 has not received information from the reader 15B functioning as a slave within a predetermined time (that is, the reader 15B is not operating normally). Error information that is operation information including information indicating the reader 15 (15B) and information indicating the operation state of the reader 15 (information indicating that the reader 15 is not operating normally). Is generated.
- the transmission information generation unit 157 is determined by the information determination unit 156 that the information received from the reader 15 (15B) functioning as a slave (that is, the slave-side acquisition information) includes error information. In this case, error information to be transmitted to the communication controller 200 is generated based on the acquired error information.
- the acquired error information includes information indicating the reader 15 (15B) that is the transmission source and information indicating the operation state of the reader 15 (information indicating that communication with the identification device 30 has failed). Therefore, these pieces of information are included in the error information transmitted to the communication controller 200.
- the information transmission unit 158 transmits the transmission information or error information generated by the transmission information generation unit 157 to the communication controller 200 described later. That is, the information transmission unit 158 corresponds to the operation information transmission unit and the identification information transmission unit of the present invention.
- the reader 15B corresponds to the second communication device of the present invention and is installed in the engine room 5A2.
- the reader 15B is assumed to communicate with the identification device 30C attached to the filter 20C and the identification device 30D attached to the engine EG. That is, the reader 15B communicates with the identification devices 30C and 30D that are assumed to be located within the communication range of the reader 15B. Then, the reader 15B executes a process of reading the component information from the identification devices 30C and 30D under the control of the reader 15A.
- FIG. 7 is a block diagram showing a configuration of the reader 15B functioning as a slave.
- the leader 15B has a configuration in which a part of the leader 15A is omitted.
- the reader 15B includes the instruction determination unit 151, the information reception unit 152, the reception determination unit 154, the information holding unit 155, the transmission information generation unit 157, and the information transmission unit 158, respectively. .
- the information holding unit 155 of the reader 15B holds the component information received by the information receiving unit 152 as slave side acquisition information. Further, the transmission information generating unit 157 of the reader 15B generates transmission information based on the slave side acquisition information held by the information holding unit 155, and the information transmitting unit 158 is a reader that functions as the master of the transmission information. Send to 15A. Note that the transmission information generation unit 157 of the reader 15B also receives the error if the reception determination unit 154 determines that the component information has not been acquired from the identification device 30 (30C, 30D) that is the acquisition target of the component information. Information is generated, and the error information is transmitted by the information transmission unit 158. Thus, in this embodiment, the reader 15B does not include the slave control unit 153 and the information determination unit 156. However, the reader 15B includes the units 153 and 156, but the units 153 and 156 may not function.
- the information receiving means 152 of the reader 15 communicates with the IC tag 301 included in the identification device 30 using, for example, a 900 MHz UHF band radio wave. Since radio waves in this frequency band can communicate with the identification device 30 (30A, 30B, 30C, 30D) separated by about 1 m, they can be used in the pump room 5A1 and the engine room 5A2.
- the reader 15 as a reading device is used as a communication device.
- a reader / writer read / write device
- the reader 15 may be only one of the readers 15A, and there may be three or more including the readers 15A, 15B. May be. Since the communication state between the reader 15 and each identification device 30 is determined by the relative positional relationship, by providing a plurality of readers 15, it is possible to read the component information stored in the IC tag with a higher probability.
- the excavator 1 that is a work vehicle includes a communication controller 200, readers 15A and 15B, an engine controller 211, a pump controller 212, and a monitor device 213 as shown in FIG.
- the engine controller 211 controls the output of the engine EG by adjusting the fuel supply amount to the engine EG.
- the pump controller 212 controls the output of the pump PN.
- the monitor device 213 includes a display function for displaying the remaining amount of fuel, failure information of the excavator 1, and an input function for performing operation settings of the excavator 1.
- the monitor device 213 includes an SMR (service meter) that measures the operating time of the engine EG of the excavator 1.
- SMR service meter
- the SMR is displayed on the monitor device 213 and SMR information (cumulative operating time information). ) Is transmitted to the management center 110 via the communication controller 200 and the communication network 120.
- the communication controller 200 includes a communication terminal 202 connected to the antenna 201 in order to enable mutual communication with the management center 110 via a communication network 120 described later.
- the communication controller 200 functions as a controller that controls the operations of the controllers 211 and 212, the monitor device 213, and the reader 15, and also functions as a processing device that processes information acquired from the reader 15. That is, the communication controller 200 corresponds to the control device and the processing device of the present invention. Therefore, the communication controller 200 includes a storage device for storing data acquired by the reader 15 and a program for executing the processing. The program executes, for example, a process for comparing data newly acquired by the reader 15 with data stored in the storage device.
- the communication controller 200 also includes an arithmetic device for executing such processing.
- the communication controller 200 activates the reader 15 when the operator of the excavator 1 operates a key switch (not shown) to start the engine EG.
- the key switch is operated to the accessory position, and the electronic devices such as the communication controller 200 and the reader 15 are supplied with power from a battery (not shown). That is, in order to operate the reader 15, the engine EG does not necessarily have to be started.
- the timing at which the reader 15 operates is not limited to this, and a timer function is provided in the communication controller 200 so that the communication controller 200 has a predetermined timing such as once a day or once a week. It may be set so that the reader 15 is activated at the time.
- the reader 15 may be periodically operated so that the component information can be acquired from the identification device 30.
- the communication controller 200 may be configured to operate the reader 15 in accordance with the operation instruction of the operator. That is, when the operator operates an operation button for generating a predetermined activation signal, the communication controller 200 may be configured to activate the reader 15 when receiving the activation signal.
- the communication controller 200 may be configured to activate the reader 15 in accordance with an operation instruction from an administrator of the management center 110 (see FIG. 5) described later. That is, the administrator transmits a predetermined activation signal from the management center 110 to the hydraulic excavator 1 via the communication network 120, and the communication controller 200 operates the reader 15 when receiving the activation signal. May be.
- an activation signal generation program for generating an activation signal at a predetermined cycle may be provided in the management center 110 so that the activation signal is automatically transmitted to the excavator 1.
- a sensor for detecting the attachment / detachment of the filters 20A, 20B, 20C (the filter head to which the filter 20C is attached is not shown) is provided in the filter heads 13A, 13B, and the reader 15 is operated according to the output of the sensors.
- You may comprise as follows.
- the communication controller 200 processes the data acquired by the reader 15 as described above. For example, the communication controller 200 compares the data with the stored data. If the communication controller 200 determines that new data has been acquired, the communication controller 200 updates the stored data with the newly acquired data. Such comparison processing may be performed by the management server 111 described later.
- the communication controller 200 transmits the data read from each identification device 30 to the management server 111 of the management center 110 via the communication terminal 202, the antenna 201, and the communication network 120 together with the date / time data.
- the communication controller 200 includes, for example, a clock IC (not shown), and date / time data can be acquired by the clock IC.
- date and time data the date and time when each reader 15 was activated (the date and time when the radio wave was transmitted), the date and time when each reader 15 read the data of the identification device 30, and the data of the identification device 30 to the management server 111.
- At least one of the transmission date and time can be exemplified. Note that data indicating date or time may be used instead of the date / time data.
- the other controller for example, pump controller 212
- leader 15 may be provided with the function of the communication controller 200 demonstrated above.
- the identification information acquisition system of the present invention includes an identification device 30 (30A, 30B, 30C, 30D), a reader 15 (15A, 15B), and a communication provided in the excavator 1.
- a controller 200 is provided.
- the identification information acquisition system 100 uses the information stored in each identification device 30 to be described.
- the identification information acquisition system 100 manages and monitors the components and the engine EG mounted on the work vehicle via the communication network 120 at the management center 110 at a position different from the work vehicle.
- the identification information acquisition system 100 includes a management center 110, at least one work vehicle (for example, the hydraulic excavator 1), and a communication network that transmits and receives information between the management center 110 and the work vehicle. 120.
- the target work vehicle may be, for example, different types of work vehicles such as a hydraulic excavator and a bulldozer.
- the communication network 120 is a network for data communication by wireless communication, and a mobile phone network or a satellite communication network can be used.
- the management center 110 includes a management server 111 that centrally manages various types of information including part information of a plurality of work vehicles.
- the management server 111 includes a mass storage device configured with a hard disk or the like.
- the management server 111 is configured to be able to communicate with a display device 112 configured with a liquid crystal monitor or the like, a communication device 113 capable of wireless or wired communication, and the like.
- the management server 111 manages and stores, for example, the component information received from the excavator 1 and the accumulated operating time information of the excavator 1 via the communication network 120.
- the management server 111 stores the TID and EPC included in the component information in association with each other by the storage device. Therefore, the management server 111 collates the newly acquired component information (data), that is, the combination of TID and EPC data read from the IC tag 301 with the component information (data) already stored. Thus, it is possible to determine whether or not a part (for example, the filter 20) of the work vehicle has been replaced and whether or not the replaced part is a genuine product. Further, by performing such collation, it is possible to grasp the elapsed time since the part was attached to the work vehicle. For this reason, for example, the replacement time of the filter 20 can be managed on the management server 111 side.
- FIG. 8 is a flowchart showing information collection processing executed in the identification information acquisition system 100.
- the reader 15 acquires component information from the identification device 30 and is received from the reader 15.
- Information collection processing for transmitting the component information to the management center 110 via the communication network 120 is executed.
- the information collecting process as shown in FIG. 8, first, in response to an ON operation of a key switch (not shown) by an operator, power is supplied from a battery (not shown) to the communication terminal 202, and the power of the communication terminal 202 is turned on.
- the communication controller 200 is activated (step S1).
- the reader (15A, 15B) is also supplied with power from a battery (not shown), and the reader 15 (15A, 15B) is powered on (step S2).
- the reader 15 may be turned on by an operation instruction from the administrator. That is, the communication controller 200 transmits an ON signal for turning on the power of the reader 15 (15A, 15B) to the reader 15 (15A, 15B) via the in-vehicle network 210, and the reader 15 (15A, 15B).
- the power may be turned on after receiving the ON signal.
- the reader 15 (15A, 15B) can acquire component information including identification information from the identification device 30.
- the communication controller 200 receives the ON signal. Is transmitted to the reader 15 (15A, 15B) via the in-vehicle network 210. After receiving the ON signal, the reader 15 (15A, 15B) is activated and reads the identification information of the identification device 30. After step S2, the communication controller 200 and the reader 15 execute an information acquisition process SA.
- FIG. 9 is a flowchart showing the information acquisition process SA.
- the communication controller 200 issues an instruction to acquire component information from the identification device 30 to the reader 15A as a master (step SA11). Specifically, the communication controller 200 outputs instruction information for acquiring component information to the reader 15A via the in-vehicle network 210. Thereafter, the communication terminal 202 shifts the processing to Step SA12.
- the reader 15A which is the master, determines whether or not instruction information for instructing acquisition of component information is input from the communication terminal 202 after the power is turned on in step S2 by the instruction determination unit 151 (step SA21). ). The determination process by the instruction determination unit 151 is repeatedly executed until instruction information is input. If it is determined that the instruction information has been input (step SA21, YES), the reader 15A outputs radio waves to the identification devices 30A and 30B by the information receiving unit 152 for a predetermined time (step SA22).
- the reader 15A determines whether or not the component information has been acquired from the identification devices 30A and 30B (whether or not a radio wave including the component information has been received) by the reception determination unit 154 (step SA23). If it is determined in the determination process in step SA23 that the component information has been acquired (the radio wave has been received) (step SA23, YES), the reader 15A uses the information holding means 155 to acquire the acquired component information and the above information.
- the date and time data are associated with each other and stored as master side acquisition information (step SA24).
- the date / time data may be acquired from a clock IC (not shown) of the communication controller 200 and associated with the component information, or the reader 15A may transmit the transmission information as described later without associating the date / time data.
- the reader 15A moves the process to step SA26.
- the reader 15A uses the transmission information generation means 157 to indicate information indicating its reader 15 (15A).
- error information including information indicating that communication with the identification device 30 could not be performed is generated (step SA25). Thereafter, the reader 15A shifts the processing to Step SA26.
- step SA26 the reader 15A causes the slave control means 153 to output instruction information for instructing acquisition of component information to the reader 15B via the in-vehicle network 210 (step SA26). Thereafter, the reader 15A shifts the processing to Step SA27.
- the reader 15B functioning as a slave executes steps SA41 to SA45 similar to steps SA21 to 25 and step SA46. That is, the reader 15B determines whether or not the instruction information is input via the in-vehicle network 210 by the instruction determination unit 151 (step SA41). This determination process is also repeatedly executed until the instruction information is input. If it is determined that the instruction information has been input (step SA41, YES), the reader 15B outputs radio waves to the identification devices 30C and 30D for a predetermined time by the information receiving means 152 (step SA42).
- the reader 15B determines whether or not the component information is acquired from the identification devices 30C and 30D by the reception determination unit 154 (whether or not a radio wave including the component information is received) (step SA43). If it is determined in the determination process of step SA43 that the component information has been acquired (the radio wave has been received) (step SA43, YES), the reader 15B uses the information holding unit 155 to acquire the acquired component information and the above-described information.
- the date and time data are associated with each other and stored as slave side acquisition information (step SA44). The acquisition of the date / time data and the association between the component information and the date / time data can be performed by the method described above. Then, the reader 15B moves the process to step SA46.
- step SA43 determines whether the component information has been acquired (step SA43, NO) or not been acquired (step SA43, NO).
- the reader 15B uses the transmission information generation unit 157 to indicate information indicating its own reader 15 (15B). Then, error information including information indicating that communication with the identification device 30 could not be performed is generated (step SA45). Thereafter, the reader 15B moves the process to step SA46.
- step SA46 the reader 15B generates transmission information including the slave side acquisition information if the slave side acquisition information is held in step SA44, and if error information is generated in step SA45. Then, transmission information including the error information is generated, and the transmission information is transmitted to the reader 15A by the information transmission means 158 (step SA46). Thereby, the information acquisition process SA in the reader 15B ends.
- step SA27 the reader 15A determines whether or not the transmission information from the reader 15B is received within a predetermined time from the output of the instruction information in step SA26 by the reception determination unit 154 (step SA27). If it is determined in the determination process of step SA27 that the transmission information has not been received (step SA27, NO), the reader 15A uses the transmission information generation means 157 to indicate information indicating the reader 15B and the operation of the reader 15B. Error information including information indicating a state (information indicating that the transmission information from the reader 15B cannot be received and the reader 15B is not operating normally) is generated (step SA28). Thereafter, the reader 15A shifts the processing to step SA31.
- step SA27 determines whether the transmission information has been received (step SA27, YES).
- the reader 15A uses the information holding unit 155 to change the slave-side acquisition information included in the transmission information to the step Along with the component information held at SA24, the information is held as master side acquired information (step SA29).
- step SA24 the reader 15A holds the component information included in the slave-side acquisition information and the date / time data in association with each other.
- the reader 15A determines whether or not error information is included in the slave side acquisition information included in the master side acquisition information by the information determination unit 156 (step SA30). If it is determined in step SA30 that the error information is not included (step SA30, NO), the reader 15A moves the process to step SA31. If it is determined in step SA30 that the error information is included (step SA30, YES), the reader 15A proceeds to step SA28 and generates the error information based on the acquired error information. . Thereafter, the reader 15A shifts the processing to Step SA31 as described above.
- step SA31 the reader 15A performs the duplication determination process by the information determination unit 156 (step SA31). If it is determined in the determination process of step SA31 that the same part information is not included in the master-side acquired information (step SA31, NO), the reader 15A shifts the process to step SA33. On the other hand, if it is determined in step SA31 that the same part information is included (step SA31, YES), the reader 15A executes the organizing process by the information holding means 155 (step SA32). . Thereby, overlapping parts information is put together. Thereafter, the reader 15A shifts the processing to Step SA33.
- the reader 15A includes the master side acquisition information if the transmission information generation unit 157 holds the master side acquisition information in the information holding unit 155, and the transmission information generation unit 157 receives the error information. If generated, transmission information including the error information is generated, and the information transmission means 158 transmits the transmission information to the communication controller 200 via the in-vehicle network 210 (step SA33). Thereby, the information acquisition process SA in the reader 15A ends.
- the above steps SA26 to SA30 are executed for each of the readers 15B, and the duplication determination process in step SA31 and the step are performed for all the acquired component information.
- the arrangement process of SA32 is executed.
- step SA12 the communication controller 200 acquires transmission information (information including at least one of component information and error information) transmitted from the reader 15A. Thereby, the information acquisition process SA in the communication controller 200 ends.
- the communication controller 200 includes the component information (component information received from each identification device 30) included in the transmission information acquired in step SA12. And whether or not the component information already stored in the predetermined storage device of the communication controller 200 is the same (step S3).
- the case where error information is included in the acquired transmission information corresponds to a case where component information cannot be acquired for some reason, and in such a case, it is determined that they are not the same.
- the transmission information cannot be acquired from the reader 15A in step SA12, it is similarly determined that the component information is not the same.
- the communication controller 200 has information indicating that information acquisition from the master reader 15 (15A) has failed, that is, error information including information indicating that the reader 15A is not operating normally. And transmission information including the error information is transmitted to the management server 111 in an information transmission process SB described later.
- step S3 If it is determined in the determination process of step S3 that they are the same (step S3, YES), in this embodiment, the communication controller 200 ends the information collection process. However, even when the newly acquired component information and the already stored component information are the same, the information transmission process SB described later may be executed. On the other hand, when it is determined in the determination process in step S3 that they are not the same (step S3, NO), the communication controller 200 executes an information transmission process SB for transmitting the acquired information to the management center 110. .
- FIG. 10 is a flowchart showing an information transmission process SB executed by the communication controller 200 and an information storage process executed by the management server 111.
- the information transmission process SB (steps SB1 to SB3) will be described.
- the communication controller 200 updates the component information already stored with the component information (step SB1). .
- the communication controller 200 may update all the stored component information with the newly acquired component information. Only the determined component information may be updated with newly acquired component information.
- the currently acquired component information may be displayed on the monitor device 213. Further, when error information is acquired, a warning may be issued by the monitor device 213 or the like.
- the communication controller 200 generates transmission information for transmitting the acquired information to the management server 111 (step SB2).
- This transmission information includes the part information and error information determined to be different in step S3, and the date / time data related to the information. Note that all newly acquired information (information included in the transmission information received from the reader 15A in step SA12) may be included.
- the communication controller 200 transmits the generated transmission information to the management server 111 via the communication network 120 (step SB3). Thereby, the information transmission process SB in the excavator 1 is completed.
- the management server 111 executes the following information storage process.
- the management server 111 repeatedly executes a process for determining whether or not transmission information from a preset work vehicle (for example, the excavator 1) has been received (Ste SC1). If it is determined that the transmission information is received (step SC1, YES), the management server 111 acquires the date and time (time and date) when the transmission information is received (step SC2). Thereafter, the management server 111 extracts component information and error information from the received transmission information, and stores these information in association with the date and time acquired in step SC2 (step SC3).
- a preset work vehicle for example, the excavator 1
- step S3 the same determination process as in step S3 may be executed to notify the administrator of the management server 111 of component information and error information different from the component information acquired in the past.
- the information storage process in the management server 111 ends, and the information collection process in the identification information acquisition system 100 ends.
- the information collection process when the operator turns on a key switch (not shown), the reader 15 is turned on and the information acquisition process SA is performed.
- the timing at which the reader 15 is turned on can be changed as appropriate.
- the management server 111 acquires the component information of the identification devices 30A, 30B, 30C, and 30D, for example, the replacement time of the filters 20A, 20B, and 20C, the engine EG Know the number of overhauls. If the part information of the identification device 30 received by the management server 111 and the date / time data associated when the excavator 1 acquires and transmits the part information are different from the part information and date / time data received in the past. In addition to recognizing the installation of the new filters 20A, 20B, 20C and the engine EG, it is possible to grasp the time when the parts are replaced and the time when the engine EG is overhauled.
- the regular identification device 30 is not attached to the counterfeit filter or the identification device 30 itself is not attached. Therefore, when a counterfeit filter is attached to the excavator 1, the reader 15, the communication controller 200, and the management server 111 may not be able to acquire part information. In this case, the error information is generated by the reader 15, and the error information is acquired by the communication controller 200 and the management server 111 via the reader 15A functioning as a master. For this reason, on the management server 111 side, the possibility that the counterfeit product filter is attached to the excavator 1 can be estimated.
- the filters 20A, 20B, and 20C do not necessarily have the same replacement timing (exchange time), but compare the data newly acquired by the communication controller 200 with the data already stored as described above. By performing processing, it is possible to grasp the replacement time for each filter. Then, the management server 111 can grasp the usage time of each filter 20A, 20B, 20C in the work vehicle in association with SMR (service meter) information (not shown) that records the cumulative operation time in the work vehicle. You can manage the time easily and reliably. Further, since the number of overhauls of the engine EG included in the component information of the identification device 30D can be acquired, the next overhaul time can be easily and based on the amount of change in the cumulative operating time since the number of times has changed. Can be managed reliably. As described above, it is very important for each reader 15 to operate appropriately and to acquire the information of the identification device 30 reliably in constructing the identification information acquisition system 100.
- the component information acquisition pattern in the identification information acquisition system 100 will be described with reference to FIGS.
- the acquisition patterns are not limited to the examples shown in FIGS. 11 to 14, but typical patterns are shown in FIGS.
- FIGS. 11 to 14 show various examples in the case where identification information (part information) of two identification devices 30 attached to different attached parts, such as filters 20A and 20B, is acquired by readers 15A and 15B. .
- one identification device 30 stores component information including identification information ABC
- the other identification device 30 stores component information including identification information DEF.
- the reader 15 ⁇ / b> A acquires component information including the identification information ABC of one identification device 30, and the reader 15 ⁇ / b> B acquires component information including the identification information DEF of the other identification device 30.
- the readers 15 ⁇ / b> A and 15 ⁇ / b> B read component information including different identification information ABC and DEF from different identification devices 30.
- the reader 15B which is the second communication device, transmits the component information including the acquired identification information DEF to the reader 15A, which is the first communication device.
- the reader 15A holds the identification information ABC acquired by itself and the identification information DEF transmitted from the reader 15B, and determines whether there is identification information having the same content.
- the reader 15A transmits the component information including the identification information ABC and DEF to the communication controller 200 without integrating the identification information (component information) because the identification information ABC and the identification information DEF are different.
- one identification device 30 stores component information including identification information ABC
- the other identification device 30 stores component information including identification information DEF.
- each reader 15A, 15B since there are two identification devices 30 within the communication range of each reader 15A, 15B, each reader 15A, 15B includes identification information ABC and identification information DEF of each identification device 30, respectively. Get component information.
- each reader 15A, 15B reads component information including the same identification information ABC, DEF.
- the reader 15B which is the second communication device, transmits the component information including the acquired identification information ABC, DEF to the reader 15A, which is the first communication device.
- the reader 15A holds the component information including the identification information ABC and DEF acquired by itself and the component information including the identification information ABC and DEF transmitted from the reader 15B, and determines whether there is identification information having the same content. . Then, the reader 15A integrates component information including the same identification information ABC and component information including the identification information DEF. The reader 15A communicates the component information including the identification information ABC and DEF because one component information including the identification information ABC and one component information including the identification information DEF remain by the organizing process (integration process). It transmits to the controller 200.
- one identification device 30 has two identification components in which component information including identification information ABC is stored, and the other identification device 30 has two identifications in which component information including identification information DEF is stored.
- the reader 15A acquires component information including identification information ABC from one identification component of one identification device 30, and the reader 15B receives component information including identification information DEF from two identification components of the other identification device 30. get.
- the reader 15 ⁇ / b> B reads the same component information from the two identification components of the identification device 30.
- the reader 15B as the second communication device transmits two pieces of component information including the acquired identification information DEF to the reader 15A as the first communication device.
- the reader 15A holds the component information including the identification information ABC acquired by itself and the two component information transmitted from the reader 15B, and determines whether there is identification information having the same content. Then, the reader 15A integrates component information including the same identification information DEF. The reader 15A communicates the component information including the identification information ABC and DEF because one component information including the identification information ABC and one component information including the identification information DEF remain by the organizing process (integration process). It transmits to the controller 200. In the example of FIG. 13, one identification device 30 has two identification components in which component information including identification information ABC is stored, but one identification device in which component information including identification information ABC is stored. Only the identification component may be provided. Also in this case, if the reader 15A acquires only one component information including the identification information ABC and the reader 15B acquires two component information including the identification information DEF, the reader 15A performs the same integration process as in the example of FIG. Will do.
- one identification device 30 has two identification components storing component information including identification information ABC, and the other identification device 30 includes component information including identification information DEF. Has two identification parts stored therein.
- the reader 15 ⁇ / b> A acquires component information from two identification components of one identification device 30.
- the reader 15B acquires component information (including identification information DEF) from two identification components of the other identification device 30, and further acquires component information (including identification information ABC) from one identification component of one identification device 30.
- the reader 15 ⁇ / b> A reads the same component information whose identification information is ABC from two identification components of one identification device 30.
- the reader 15B reads the same component information whose identification information is DEF from the two identification components of the other identification device 30.
- the reader 15B which is the second communication device, transmits the acquired three component information (component information whose identification information is DEF, DEF, ABC) to the reader 15A, which is the first communication device.
- the reader 15A obtains two pieces of component information acquired by itself (identification information is ABC, ABC component information) and three pieces of component information transmitted from the reader 15B (identification information is DEF, DEF, ABC component information). It is determined whether there is identification information having the same content.
- the reader 15A integrates component information including the same identification information ABC and component information including the identification information DEF.
- the reader 15A communicates the component information including the identification information ABC and DEF because one component information including the identification information ABC and one component information including the identification information DEF remain by the organizing process (integration process). It transmits to the controller 200.
- the hydraulic excavator 1 and the identification information acquisition system 100 have the following effects.
- the leader 15A (first communication device) that functions as a master is disposed in the pump room 5A1 that is lower in temperature than the engine room 5A2 in which the leader 15B (second communication device) that functions as a slave is disposed in the excavator 1 that is a work vehicle. Is done.
- the reader 15A for controlling the operation of the reader 15B can be arranged at a site within the allowable temperature range, and can be operated within the allowable temperature range. Therefore, the reader 15A can be appropriately operated, and the reader 15B can be appropriately controlled.
- the reader 15A transmits transmission information including error information to the communication controller 200.
- This error information includes information indicating the reader 15B and the content of the error. According to this, based on the received error information, the communication controller 200 and thus the management server 111 can grasp the reader 15 that is not operating normally. Therefore, the operation state of the reader 15 functioning as a slave can be grasped.
- the reader 15A not only controls the reader 15B but also transmits the slave-side acquisition information acquired by the reader 15B and the master-side acquisition information acquired by the reader 15A in a lump. According to this, compared with the case where each reader 15 transmits information to the communication controller 200 individually, the transmission frequency of information from each reader 15 to the communication controller 200 can be reduced. In addition, the processing load of the communication controller 200 can be reduced.
- the reader 15B as the second communication device does not have the information determining unit 156, and the information holding unit 155 of the reader 15B is configured not to execute the organizing process.
- the present invention is not limited to this. That is, the reader 15B also includes the information determination unit 156.
- the information determination unit 156 determines that the same part information is included in the slave-side acquired information
- the information holding unit 155 of the reader 15B The organizing process for integrating the component information determined to have the same content among the component information included in the slave-side acquired information may be executed.
- the reader 15 ⁇ / b> B holds two pieces of component information including the same identification information DEF in the slave side acquisition information.
- the information holding unit 155 of the reader 15B may integrate two pieces of component information including the same identification information DEF.
- slave-side acquisition information including component information acquired from the identification device 30 that is assumed to be located within the communication range or the identification device 30 that is not assumed to be located within the communication range. For example, since there is an identification device 30 in which the same component information is stored in a certain filter 20, if it is determined that the component information having the same content is acquired and included, the component information having the same content is integrated. For this reason, when component information with the same content is acquired, the component information with the same content is integrated, and the slave-side acquired information after integration is transmitted to the reader 15A. On the other hand, if it is determined that the component information having the same content is not included, the held slave-side acquisition information is transmitted to the reader 15A.
- the information determination unit 156 included in the reader 15A as the first communication device performs the duplication determination process on the received slave-side acquired information. It is good also as a structure which does not. In this case, if the communication ranges of the readers 15A and 15B do not overlap each other, the information determination unit 156 of the reader 15A determines the overlap only for the part information acquired from the identification device 30 by the reader 15A. It is good also as a structure which performs a process.
- the management server 111 may execute the duplication determination process and the arrangement process without the reader 15A or the reader 15B executing the duplication determination process and the arrangement process.
- the identification information acquisition system 100 in this modification includes an identification device 30 (30A, 30B, 30C, 30D) provided in the excavator 1, a reader 15 (15A, 15B), a communication controller 200, a management server 111, and the like. Composed.
- the reader 15B transmits the acquired component information to the reader 15A
- the reader 15A transmits the component information received from the reader 15B and the component information acquired by itself to the management server 111 via the communication controller 200. To do.
- the management server 111 determines whether or not the received component information includes the component information having the same identification information, and integrates the component information having the same identification information when it is determined that the received component information includes the component information.
- the component information may be transmitted directly from the reader 15A to the management server 111.
- the information determination unit 156 determines that the component information in which the product number as the type information included in the identification information and the serial number as the unique information match each other is the component information having the same content.
- the present invention is not limited to this, and it may be determined whether the pieces of component information have the same contents based on other information.
- component information in which at least one of the type information (product number) or the unique information (serial number) matches may be determined as component information having the same content. That is, in one work vehicle (hydraulic excavator 1), since the parts to which the identification device 30 is attached are usually different parts, the type information is also different for each identification device 30.
- the readers 15A and 15B hold the identification information of the same type information, it can be determined that they have received the same component information. Further, since the unique information is usually different for each component, when the readers 15A and 15B hold the identification information of the same unique information, it can be determined that they have received the same component information.
- the leader 15A that functions as a master is disposed in the pump room 5A1 in the machine room 5A
- the leader 15B that functions as a slave is an engine that is partitioned in the machine room 5A via the pump room 5A1 and the partition wall 5A3. It is assumed that it is arranged in the room 5A2.
- the present invention is not limited to this. That is, in the work vehicle, the part where the leader 15 is disposed is not limited to the machine room 5A, and the leader 15 may be disposed at a position where the leader 15 can communicate with the identification device 30 removed together with the replacement part.
- positioned do not need to be partitioned off by partition (for example, partition 5A3).
- the reception determination unit 154 of the reader 15A determines that the reader 15B is not operating normally when the transmission information from the reader 15B cannot be received.
- the present invention is not limited to this. That is, the operation state of the reader 15B may be determined based on another index.
- a temperature sensor may be provided in the engine room 5A2, and it may be determined that the reader 15B is not operating normally when the temperature measured by the temperature sensor is outside the allowable temperature range of the reader 15.
- the reader 15A after the reader 15A receives and acquires the component information, the instruction information is output, and the reader 15B receives and acquires the component information.
- the present invention is not limited to this. In other words, after the reader 15B functioning as a slave acquires component information, the reader 15A functioning as a master may acquire the component information.
- the communication controller 200 transmits the transmission information including the component information received from the identification device 30 to the management server 111 of the management center 110 via the communication network 120.
- the communication controller 200 may be configured to output and display the acquired component information and error information on the monitor device 213 so that the operator can grasp the component information and thus the state of the component. Good.
- the acquired component information and error information are stored in a predetermined storage device, the service person accesses the hydraulic excavator 1, connects a communication cable to a terminal (not shown) connected to the storage device, and stores the information. You may make it downloadable in order to output the components information and error information which are memorize
- the communication controller 200 executes the process of determining whether or not the component information acquired by each reader 15 matches the component information already stored (component information acquired in the past).
- each reader 15 stores part information received in the past, determines whether the part information and the newly received part information are the same, and determines the determination result individually or as a master. It is good also as a structure which transmits to the communication controller 200 via the reader
- the hydraulic excavator 1 as a work vehicle includes the two leaders 15, and the leader 15A functions as a master and controls the leader 15B that functions as a slave.
- the number of these readers 15 is not limited to two. That is, as long as at least one of the plurality of readers 15 is configured to function as a master and the reader 15 that functions as a slave is controlled, the number of readers 15 can be changed as appropriate.
- the reader 15B does not have to be controlled by the other reader 15 (15A), and the component information acquired by the other reader 15 is transmitted to at least one of the readers 15. That's fine.
- only one leader 15 may be provided in the work vehicle.
- the parts from the identification device for all the attached parts can be obtained by providing only one reader 15.
- Information can be acquired. Also in this case, the reader 15 determines whether or not the acquired component information includes component information having the same identification information, and if the same information is included, the reader 15 may perform an arrangement process (integration process).
- the identification devices 30A, 30B, and 30C have at least one IC tag 301.
- the present invention is not limited to this.
- a configuration having two or more IC tags 301 may be employed.
- the number of identification devices 30 included in the work vehicle can be changed as appropriate.
- the identification devices 30A, 30B, and 30C are attached to the filters 20A, 20B, and 20C, respectively, and the identification device 30D is attached to the engine EG.
- the present invention is not limited to this.
- the attached part to which the identification device 30 is attached may be changed or added as appropriate. If it is a part (including the apparatus) constituting the work vehicle, the exchangeable part may be a replacement part. It does not have to be.
- the present invention can be applied not only to construction machines such as hydraulic excavators but also to other construction machines such as wheel loaders, bulldozers, motor graders, dump trucks, and to industrial vehicles such as forklifts.
- SYMBOLS 1 Hydraulic excavator (work vehicle), 20 (20A, 20B, 20C) ... Filter, 30A, 30B ... Identification device (first identification device), 30C, 30D ... Identification device (second identification device), 100 ... Identification information Acquisition system, 15A ... Reader (communication device, first communication device), 15B ... Reader (communication device, second communication device), 154 ... Reception determination means (determination means), 155 ... Information holding means, 158 ... Information transmission means (Operation information transmitting means, identification information transmitting means), 200... Communication controller (control device, processing device), 5A1... Pump room, 5A2.
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Abstract
Description
この特許文献1に記載の交換部品識別装置では、建設機械のメーカーが保証する純正の交換部品に識別部品であるICチップが埋め込まれており、リーダー(センサ)は、ICチップに記憶された必要情報を検知できる位置に配置されている。必要情報を検知できない場合に出力される異常検知信号がセンサから出力された場合には、コントローラは、エンジンの稼働停止やモニタによる警告を行う。
なお、コントローラは、純正品である新たなフィルターに交換されたとする信号がセンサから出力された場合には、当該フィルターの組み込み時期を記憶するとともに、次回交換時期を演算してオペレータに知らせる。更に、コントローラは、純正品であるフィルターの交換の有無や交換回数を記憶する。
この特許文献2に記載の構成では、それぞれ応答器からの情報を受信可能に構成された複数の質問器は、それぞれの認証エリアが相互に近接して設定されるように配置されている。ここで、上記複数の質問器のうち少なくとも2つが、自己の認証エリア内の応答器だけでなく、他の認証エリア内の応答器からの応答信号を受信してしまう可能性がある。これに対し、各質問器は、送信タイミングをずらして質問信号を送信する。この送信タイミングのずれ量は、応答器が質問信号を受信して起動し、応答信号を返信するまでに要する時間以上の時間に設定されている。これにより、各質問器は、当該質問器からの質問信号に対する応答信号を自己の認証エリア内に位置する応答器から受信できる。
なお、上記特許文献2には、1台の質問器がマスターとなって、各質問器間の同期を取ることが記載されている。
上記第1態様によれば、複数の通信装置のうち、第2通信装置を制御する第1通信装置は、作業車両において当該第2通信装置が配置される部位より温度が低い部位に配置される。これによれば、第1通信装置を、許容温度範囲内の部位に配置でき、当該許容温度範囲内で動作させることができる。従って、第1通信装置を適切に動作させることができ、第2通信装置を適切に制御できる。
なお、油圧ポンプとしては、エンジン内のオイルの循環、及び、当該エンジンへの燃料の供給等を実施するポンプを例示できる。
上記第1態様によれば、第1通信装置がポンプルームに配置され、第2通信装置がエンジンルームに配置されるので、エンジンルーム及びポンプルームに配置される部品に取り付けられた識別装置と通信できる。この際、ポンプルームはエンジンルームに比べて温度が低いので、第1通信装置を安定して動作させることができ、第2通信装置を確実かつ適切に制御できる。
上記第1態様によれば、第2通信装置が正常に動作していないと判定された場合には、第1通信装置によって上記動作情報が制御装置に送信される。これによれば、送信された動作情報に基づいて、制御装置が第2通信装置の動作状態を把握できる。
上記第1態様によれば、第1通信装置は、第2通信装置の動作を制御するだけでなく、当該第2通信装置によって取得された第2識別情報と、当該第1通信装置によって取得された第1識別情報とを一括して送信する。これによれば、第1通信装置及び第2通信装置が、それぞれ第1識別情報及び第2識別情報を個別に送信する場合に比べて、各通信装置からの識別情報の送信頻度を削減できる。
上記第2態様によれば、上記第1態様に係る識別情報取得システムと同様の効果を奏することができる。
上記第3態様によれば、上記第2態様に係る作業車両と同様の効果を奏することができる。
[油圧ショベル全体の説明]
図1は、本発明の作業車両の一例としての油圧ショベル1を示す斜視図である。
本実施形態において、油圧ショベル1は、図1に示すように、車両本体2と作業機3とを有する。車両本体2は、走行装置4と上部旋回体5とを有する。
なお、上部旋回体5においては、作業機3及び運転室5Bが配置されている側が前であり、機械室5Aが配置されている側が後である。前に向かって左側が上部旋回体5の左であり、前に向かって右側が上部旋回体5の右である。また、油圧ショベル1及び車両本体2は、上部旋回体5を基準として走行装置4側が下であり、走行装置4を基準として上部旋回体5側が上である。油圧ショベル1が水平面に設置されている場合、下は鉛直方向、すなわち重力の作用方向側であり、上は鉛直方向とは反対側である。
図2は、機械室5Aを示す概略図である。
上部旋回体5は、機械室5A、運転室5B、カウンタウェイト5Cを有する。
機械室5Aは、上部旋回体5の一端側(後側)に配置されている。機械室5Aの内部は、図2に示すように、隔壁5A3によってポンプルーム5A1とエンジンルーム5A2とに仕切られており、後側から見て、ポンプルーム5A1は右側に、エンジンルーム5A2は左側に位置する。
エンジンルーム5A2内には、動力発生装置としてのエンジンEGの他、ラジエターなどのクーリングコアCC等を含む冷却ユニットCUが収容されている。冷却ユニットCUは、エンジンEGと隣接して配置されており、当該エンジンEGに流れる冷却水や図示しない油圧機器に流れる作動油等を冷却する。
エンジンEGは、カウンタウェイト5Cと、エンジンルーム5A2の前側にある隔壁と、右側にあるポンプルーム5A1及び左側にあるエンジンルーム5A2を区切っている隔壁5A3と、図示しない左側の扉とによって四方が囲まれるとともに、エンジンEGの上方に配置されるエンジンフードを含む天板と底板(それぞれ図示省略)とによって囲まれた略密閉空間に配置される。従って、外気がエンジンEGに触れにくいため、エンジンEGが駆動している際には、エンジンEGが発する熱によってエンジンルーム5A2内の温度は高温になりやすく、エンジンEGが停止してもエンジンルーム5A2内の温度はすぐには低下しない。
更に、エンジンルーム5A2内には、燃料メインフィルターであるフィルター20C及び識別装置30Cと、エンジンEGに取り付けられる識別装置30Dと、各識別装置30C,30Dと通信するリーダー15Bとが設けられている。これらについては、後に詳述する。
カウンタウェイト5Cは、上部旋回体5の最後部に設けられている。カウンタウェイト5Cは、作業機3との重量バランス用に設けられ、内部に重量物が充填されている。すなわち、機械室5Aは、運転室5Bとカウンタウェイト5Cの間に配置される。
図3は、上部旋回体5の右側から図示しない扉を開けた状態のポンプルーム5A1内を示す図である。換言すると、図3は、ポンプルーム5A1内のフィルター20A,20B及びリーダー15Aの配置状態を示す概略図である。
ポンプルーム5A1は、図示しない右側の扉と、カウンタウェイト5Cと、ポンプルーム5A1の前側にある隔壁と、エンジンルーム5A2を区切っている隔壁5A3とによって四方が囲まれるとともに、上方に配置されるエンジンフードを含む天板と底板(それぞれ図示省略)とによって囲まれた略密閉空間である。
ポンプルーム5A1内には、図3に示すように、油圧ポンプPNが収容されているが、当該ポンプルーム5A1には、エンジンルーム5A2に比べ、空間を高温化しやすい熱源はない。つまり、ポンプルーム5A1に収容される油圧ポンプPN等は、エンジンEGに比べ、空間に放熱される熱が少ない。このポンプルーム5A1の直上に位置する天板は、例えばスリット状の通気孔が形成されたものとすることができ、当該通気孔からポンプルーム5A1内の熱を放熱できる。また、ポンプルーム5A1は、上記のように、少なくとも右側の扉(隔壁5A3とは反対側に位置する扉)により外気と隔てられているが、ポンプルーム5A1内の熱は、当該扉を介して放熱できる。更に、当該扉に、スリット状の通気孔を設ければ、ポンプルーム5A1内の熱は、当該通気孔を通って放熱され、かつ、当該通気孔から外気をポンプルーム5A1内に導入できる。すなわち、ポンプルーム5A1は、エンジンルーム5A2に比べて、空間内の温度を低く保つことができる。
このようなポンプルーム5A1内に収容される油圧ポンプPNは、エンジンEGと機械的に連結し、当該エンジンEGの駆動によって駆動される。そして、油圧ポンプPNは、上記ブームシリンダ6A等の油圧機器に作動油を吐出する。
具体的に、ポンプルーム5A1には、油圧ポンプPNが設置されるブラケット11Aが設けられている。ブラケット11Aには、フィルター保持部品であるフィルターヘッド13Aが取り付けられ、フィルターヘッド13Aにはホース14Aが取り付けられている。
また、ポンプルーム5A1には、ブラケット11Bを介してフィルターヘッド13Bが取り付けられ、フィルターヘッド13Bには燃料ホース14Bが取り付けられている。
フィルターヘッド13Aには、フィルター20Aが取り付けられている。フィルター20Aは、エンジンオイル用のオイルフィルターであり、ホース14Aを流れたエンジンオイルに含まれる塵埃等を除去する。
フィルター20Aは、上記エンジンEG(図2参照)とホース14Aを介して接続されている。エンジンEG内に滞留するエンジンオイルは、ポンプによって汲み上げられ、フィルター20Aに送られる。フィルター20Aを通過したエンジンオイルは、再びエンジンEGに戻される。
フィルター20B(燃料プレフィルター)は、図示しない燃料タンクとホース14Bを介して接続されている。フィルター20Bには、図示しない燃料タンク内の燃料が送られる。その後、燃料は上記フィルター20C(燃料メインフィルター)に送られ、フィルター20Cを通過した燃料は、図示しない燃料噴射装置に送られる。燃料噴射装置にて余った燃料は、図示しないホースを介して燃料タンクに戻される。
各フィルター20(20A,20B,20C)は、使用により内部の濾過部材が目詰まりを起こすため、定期的に交換が必要な部品である。その定期的な交換時期の到来は、例えば、油圧ショベル1のエンジンの稼働時間を計時するSMR(サービスメータ)が示す累積稼働時間に基づいて判断される。このような判断処理は、例えば、後述する通信コントローラ200、モニタ装置213、或いは、管理サーバ111により行うことができる。
これらフィルター20A,20B,20Cには、識別装置30A,30B,30Cが取り付けられている。なお、上記のように、エンジンEGには、識別装置30Dが取り付けられている。すなわち、フィルター20A,20B,20C及びエンジンEGは、識別装置30(30A,30B,30C,30D)が取り付けられる被取付部品に相当する。
識別装置30(30A,30B,30C,30D)は、当該識別装置30が取り付けられた被取付部品(交換部品の他、エンジンEG等の装置も含む)に関連した情報を記憶及び提供する。
識別装置30A,30B,30Cは、リーダー15(15A,15B)から出力される電波による電磁誘導やマイクロ波等によって電力を発生させるパッシブタイプのICタグ301を用いることができる。本実施形態では、識別装置30A,30B,30Cは、それぞれ識別部品である少なくとも1つのICタグ301(図4参照)を備える。このため、識別装置30A,30B,30Cは、それぞれ1つのICタグ301を備えていてもよいし、複数のICタグ301を備えるようにしてもよい。
また、識別装置30Dは、上記パッシブタイプのICタグ301を1つ備える。なお、識別装置30Dが備えるICタグ301は、識別装置30A,30B,30Cが備えるICタグ301の形状及び構成と同じものでも異なるものでもよく、少なくとも後述するICチップ35及びアンテナ36を備える。
このように、識別装置30が、パッシブタイプのICタグ301を備えることにより、内蔵電池を不要にでき、コストも安価にできるとともに、電池切れによる動作不良も防止できる。
図4は、ICタグ301の構成を示す概略図である。
ICタグ301は、ICチップ35及び内部アンテナ36をパッケージ材料31,32で封入したRFID(Radio Frequency Identification)タグである。
本実施形態のICタグ301は、通信周波数帯として、UHF(ultrahigh frequency)帯域、具体的には860~960MHzの帯域での通信が可能である。なお、RFIDタグの通信周波数帯としては、他の帯域でもよい。
ICチップ35は、アンテナ36と接続されている。アンテナ36の形状や寸法はリーダー15A、15Bと通信が可能なように設定される。ICチップ35とアンテナ36とは、パッケージ材料31、32の間に挟まれる。図4は、パッケージ材料31を透過させた図示となっている。このようなICタグ301は、両面テープや接着剤といった接合材を用いて、フィルター20A、20B、20C、エンジンEGに取り付けられる。
これらのうち、EPCには、部品の名前を識別する部品名識別番号、識別装置30が取り付けられる部品の種類を特定する種別情報としての品番、製造日、同じ品番の部品のなかで個々の部品を特定する固有情報としてのシリアル番号(製造番号)、及び、当該部品の製造元を示すサプライヤコード等を含む識別情報が記憶されている。部品名識別番号とは、例えば、エンジンオイル用オイルフィルター、燃料プレフィルター、燃料メインフィルターといった部品を識別できるものであって、例えば、各部品に対し個別の番号を割り当てたものである。当該部品がエンジンEGの場合は、エンジン毎に割り当てられる個別の番号を部品名識別番号としてもよい。また、当該部品がエンジンEGである場合には、例えば、当該エンジンEGのオーバーホールの回数が識別情報に含まれる。
図5は、本発明の一実施形態における油圧ショベル1の構成、及び、油圧ショベル1を含んで構成される識別情報取得システム100の概略構成を示すブロック図である。
機械室5Aには、図5に示すように、識別装置30A,30B,30C,30Dと通信する通信装置としてのリーダー15(15A,15B)が取り付けられている。これらリーダー15は、それぞれ、識別装置30A,30B,30C,30DのICタグ301に記憶されている識別情報を含む部品情報(以下、単に「データ」と呼ぶこともある)を読み出して取得する。なお、本実施形態では、リーダー15が、読み出し機能を有したもので説明するが、リーダー15に代え、読み出し機能に加えて書き込み機能も有するリーダーライターを用いてもよい。
リーダー15Aは、図6に示すように、指示判定手段151、情報受信手段152、スレーブ制御手段153、受信判定手段154、情報保持手段155、情報判定手段156、送信情報生成手段157及び情報送信手段158を有する。
指示判定手段151は、後述する通信コントローラ200から、識別装置30に記憶された部品情報の取得を指示する指示情報が入力されたか否かを判定する。
情報受信手段152は、指示判定手段151により指示情報が入力されたと判定された場合に、識別装置30に電波を所定時間出力して、識別装置30から出力される電波を受信する。
受信判定手段154は、情報受信手段152により受信された電波に応じて、識別装置30から当該識別装置30に記憶された部品情報を含む電波を受信できたか否かを判定する。また、受信判定手段154は、スレーブ制御手段153により指示情報を出力してから所定時間内に、リーダー15Bから部品情報を受信できたか否かを判定することにより、リーダー15Bが正常に動作しているか否かを判定する。すなわち、受信判定手段154は、本発明の判定手段に相当する。
また、情報判定手段156は、保持されたマスター側取得情報に、同じ内容の部品情報が含まれるか否かを判定する重複判定処理を実行する。
なお、本実施形態では、情報判定手段156は、少なくとも上記品番及びシリアル番号が一致する部品情報を、同じ内容の部品情報(同じ内容の識別情報を有する部品情報)と判定する。ただし、油圧ショベル1に設けられる上記識別装置30A,30B,30C,30Dがすべて異なる品番(種別情報)であっても、情報判定手段156は、リーダー15A或いはリーダー15Bにより読み込まれた品番に、一致する部品情報があるならば、同じ内容の部品情報(同じ内容の識別情報を有する部品情報)と判定してもよい。また、油圧ショベル1に設けられる上記識別装置30A,30B,30C,30Dがすべて異なるシリアル番号(固有情報)であっても、情報判定手段156は、リーダー15A或いはリーダー15Bにより読み込まれたシリアル番号に、一致する部品情報があるならば、同じ内容の部品情報(同じ内容の識別情報を有する部品情報)と判定してもよい。
一方、識別装置30の配置位置によっては、それぞれ異なる位置に配置された複数のリーダー15(15A,15B)により、1つの識別装置30から部品情報が受信される場合がある。
従って、後述する図11~14にて説明するように、例えば、1つのリーダー15が、1つの識別装置30が有する1つのICタグ301から部品情報を受信する場合がある他、複数のリーダー15のそれぞれが、1つの識別装置30が有する1つのICタグ301から、同じ識別情報を有する部品情報を受信する場合がある。つまり、リーダー15と識別装置30との通信状況によっては、リーダー15の通信範囲内に位置することが想定された識別装置30とは異なる識別装置から部品情報を受信する場合がある。
このため、情報保持手段155により保持されるマスター側取得情報には、同じ内容の部品情報が含まれないこととなる。なお、本実施形態では、情報保持手段155は、同じ内容であると判定された部品情報のうち1つを残して他を削除しているが、削除せずに、送信情報生成手段157により生成される送信情報に含めないようにしてもよい。
また、送信情報生成手段157は、上記受信判定手段154により、識別装置30A,30Bの部品情報が取得されなかったと判定された場合には、自己のリーダー15(15A)を示す情報と、当該リーダー15の動作状態を示す情報(識別装置30と通信できなかった旨を示す情報)とを含む動作情報であるエラー情報を生成する。
加えて、送信情報生成手段157は、情報判定手段156により、スレーブとして機能するリーダー15(15B)から受信された情報(すなわち、スレーブ側取得情報)にエラー情報が含まれていると判定された場合には、取得されたエラー情報に基づいて、通信コントローラ200に送信するエラー情報を生成する。なお、取得されたエラー情報には、送信元のリーダー15(15B)を示す情報と、当該リーダー15の動作状態を示す情報(識別装置30と通信できなかった旨を示す情報)とが含まれているので、これらの情報が、通信コントローラ200に送信されるエラー情報に含まれることとなる。
情報送信手段158は、送信情報生成手段157により生成された送信情報又はエラー情報を、後述する通信コントローラ200に送信する。すなわち、情報送信手段158は、本発明の動作情報送信手段及び識別情報送信手段に相当する。
リーダー15Bは、リーダー15Aの一部が省略された構成を有する。具体的に、リーダー15Bは、図7に示すように、それぞれ上記した指示判定手段151、情報受信手段152、受信判定手段154、情報保持手段155、送信情報生成手段157及び情報送信手段158を有する。
このように、本実施形態では、リーダー15Bは、上記スレーブ制御手段153及び情報判定手段156を備えていない。しかしながら、リーダー15Bが当該各手段153,156を備えるが、当該各手段153,156が機能しない構成としてもよい。
また、本実施形態では、2台のリーダー15(15A,15B)が設けられているが、リーダー15は、リーダー15Aの1台のみであってもよく、リーダー15A,15Bを含む3台以上あってもよい。リーダー15と各識別装置30との通信状態は、相対位置関係によって決まるため、複数のリーダー15を設けることで、より高い確率でICタグに記憶されている部品情報を読み取ることができる。
作業車両である油圧ショベル1は、上記構成の他、図5に示すように、通信コントローラ200、リーダー15A,15B、エンジンコントローラ211、ポンプコントローラ212及びモニタ装置213と、これらを接続して互いに通信可能とする車体内ネットワーク210と、を備える。
エンジンコントローラ211は、エンジンEGへの燃料供給量を調整して、当該エンジンEGの出力を制御する。ポンプコントローラ212は、ポンプPNの出力を制御する。
モニタ装置213は、燃料残量や油圧ショベル1の故障情報等を表示する表示機能や、油圧ショベル1の動作設定等を行う入力機能を備える。また、モニタ装置213は、油圧ショベル1のエンジンEGの稼働時間を計時するSMR(サービスメータ)が備えられており、SMRはモニタ装置213に表示されるとともに、SMRの情報(累積稼働時間の情報)は、通信コントローラ200、通信ネットワーク120を介して管理センタ110に送信される。
また、リーダー15が作動するタイミングは、これに限らず、通信コントローラ200にタイマー機能を設け、通信コントローラ200が、例えば一日に一回、或いは、一週間に一回など、所定のタイミングになった際にリーダー15を作動させるように設定しておくようにしてもよい。つまり、定期的にリーダー15を作動させて識別装置30から部品情報を取得できるようにしてもよい。
また、上記オペレータの操作指示に応じて、通信コントローラ200が、リーダー15を作動させる構成としてもよい。すなわち、当該オペレータが所定の起動信号を発生するための操作ボタンを操作した際、通信コントローラ200が、その起動信号を受信した場合にリーダー15を作動させるように構成してもよい。
加えて、フィルターヘッド13A,13Bにフィルター20A,20B,20C(フィルター20Cが装着されるフィルターヘッドについては図示省略)の脱着を検出するセンサを設け、当該センサの出力に応じてリーダー15を作動させるように構成してもよい。
なお、以上に説明した通信コントローラ200の機能を、他のコントローラ(例えば、ポンプコントローラ212)やリーダー15が備えていてもよい。
このような作業車両である油圧ショベル1において、本発明の識別情報取得システムは、当該油圧ショベル1に設けられる識別装置30(30A,30B,30C,30D)、リーダー15(15A,15B)及び通信コントローラ200を備えて構成される。
次に、各識別装置30に記憶された情報を利用した識別情報取得システム100について説明する。以下では、油圧ショベル1を備える識別情報取得システム100を例示するが、他の作業車両としての建設機械にも、本発明は適用可能である。
識別情報取得システム100は、作業車両に搭載された部品やエンジンEGを、当該作業車両とは異なる位置の管理センタ110にて、通信ネットワーク120を介して管理及び監視する。この識別情報取得システム100は、図5に示すように、管理センタ110と、少なくとも1台の作業車両(例えば油圧ショベル1)と、当該管理センタ110及び作業車両の間で情報を送受信する通信ネットワーク120と、を備える。なお、対象とする作業車両は、例えば油圧ショベルとブルドーザといった種類が異なる作業車両を対象としてもよい。
これらのうち、通信ネットワーク120は、無線通信によるデータ通信用のネットワークであり、携帯電話網や衛星通信網を利用できる。
管理サーバ111は、ハードディスク等で構成される大容量記憶装置を備える。管理サーバ111は、液晶モニタ等で構成される表示装置112や、無線又は有線にて通信可能な通信機器113等と相互に通信可能に構成されている。そして、管理サーバ111は、通信ネットワーク120を介して、例えば、油圧ショベル1から受信した上記部品情報や油圧ショベル1の累積稼働時間の情報等を管理及び記憶する。
図8は、識別情報取得システム100にて実行される情報収集処理を示すフローチャートである。
本実施形態に係る識別情報取得システム100では、油圧ショベル1の通信コントローラ200から入力される指示情報に基づいて、リーダー15が上記識別装置30から部品情報を取得し、当該リーダー15から受信された部品情報を、通信ネットワーク120を介して、管理センタ110に送信する情報収集処理を実行する。
情報収集処理では、図8に示すように、まず、オペレータによる図示しないキースイッチのオン操作に応じて、図示しないバッテリから通信端末202へ給電され、通信端末202の電源がONされ、これにより、通信コントローラ200が起動する(ステップS1)。
更に、リーダー(15A、15B)に対しても図示しないバッテリから給電が行われ、リーダー15(15A,15B)の電源がONされる(ステップS2)。なお、前述のように、管理者の操作指示等によってリーダー15の電源をONさせるようにしてもよい。つまり、通信コントローラ200は、リーダー15(15A,15B)の電源をONするためのON信号を、車体内ネットワーク210を介してリーダー15(15A,15B)に送信し、リーダー15(15A,15B)は、そのON信号を受けてから電源がONされるようにしてもよい。このようにすることで、例えば夜間など油圧ショベル1が休車中であっても、リーダー15(15A,15B)は、識別装置30から、識別情報を含む部品情報を取得できる。例えば、通信コントローラ200が所定の周期で自動的に起動するようにしておき、通信コントローラ200が起動した際に、アンテナ201を介して所定の起動信号を受信したら、通信コントローラ200は、当該ON信号を、車体内ネットワーク210を介してリーダー15(15A,15B)に送信する。リーダー15(15A,15B)は、当該ON信号を受信した後、起動して識別装置30の識別情報を読み込む。ステップS2の後、通信コントローラ200及びリーダー15は、情報取得処理SAを実行する。
情報取得処理SAでは、図9に示すように、まず、通信コントローラ200が、マスターであるリーダー15Aに対して、識別装置30からの部品情報の取得指示を実施する(ステップSA11)。具体的に、通信コントローラ200は、車体内ネットワーク210を介してリーダー15Aに対して、部品情報を取得させる指示情報を出力する。この後、通信端末202は、処理をステップSA12に移行する。
ここで、指示情報が入力されたと判定された場合には(ステップSA21、YES)、リーダー15Aは、情報受信手段152により電波を識別装置30A,30Bに対して所定時間出力する(ステップSA22)。
ステップSA23の判定処理にて、部品情報が取得された(電波が受信された)と判定されると(ステップSA23、YES)、リーダー15Aは、情報保持手段155により、取得された部品情報と上記日時データとを関連付け、これらをマスター側取得情報として保持する(ステップSA24)。なお、日時データは、通信コントローラ200の図示しない時計ICより取得して部品情報と関連付けてもよいし、リーダー15Aでは日時データを関連付けずに、取得された部品情報が、後述するように送信情報として通信コントローラ200に送信された後に、部品情報と日時データとが関連付けられるようにしてもよい。そして、リーダー15Aは、処理をステップSA26に移行する。
一方、ステップSA23の判定処理にて、部品情報が取得されなかったと判定されると(ステップSA23、NO)、リーダー15Aは、送信情報生成手段157により、自己のリーダー15(15A)を示す情報と、識別装置30と通信できなかった旨を示す情報とを含むエラー情報を生成する(ステップSA25)。この後、リーダー15Aは、処理をステップSA26に移行する。
すなわち、リーダー15Bは、指示判定手段151により、車体内ネットワーク210を介して上記指示情報が入力されたか否かを判定する(ステップSA41)。この判定処理も、指示情報が入力されるまで繰り返し実行される。
ここで、指示情報が入力されたと判定された場合には(ステップSA41、YES)、リーダー15Bは、情報受信手段152により識別装置30C,30Dに電波を所定時間出力する(ステップSA42)。
ステップSA43の判定処理にて、部品情報が取得された(電波が受信された)と判定されると(ステップSA43、YES)、リーダー15Bは、情報保持手段155により、取得された部品情報と上記日時データとを関連付け、これらをスレーブ側取得情報として保持する(ステップSA44)。日時データの取得や部品情報と日時データとの関連付けについては、前述のような方法で行うことができる。そして、リーダー15Bは、処理をステップSA46に移行する。
これにより、リーダー15Bにおける情報取得処理SAは終了する。
ステップSA27の判定処理にて、送信情報が受信されなかったと判定されると(ステップSA27、NO)、リーダー15Aは、送信情報生成手段157により、リーダー15Bを示す情報、及び、当該リーダー15Bの動作状態を示す情報(リーダー15Bからの送信情報を受信できず、当該リーダー15Bが正常に動作していない旨を示す情報)を含むエラー情報を生成する(ステップSA28)。この後、リーダー15Aは、処理をステップSA31に移行する。
このステップSA30の判定処理にて、エラー情報が含まれていないと判定されると(ステップSA30、NO)、リーダー15Aは、処理をステップSA31に移行する。
このステップSA30の判定処理にて、エラー情報が含まれると判定されると(ステップSA30、YES)、リーダー15Aは、ステップSA28に移行し、取得されたエラー情報に基づいて上記エラー情報を生成する。この後、リーダー15Aは、上記のように、処理をステップSA31に移行する。
このステップSA31の判定処理にて、マスター側取得情報に同じ内容の部品情報は含まれていないと判定されると(ステップSA31、NO)、リーダー15Aは、処理をステップSA33に移行する。
一方、ステップSA31の判定処理にて、同じ内容の部品情報が含まれると判定されると(ステップSA31、YES)、リーダー15Aは、情報保持手段155により、上記整理処理を実行する(ステップSA32)。これにより、重複する部品情報がまとめられる。この後、リーダー15Aは、処理をステップSA33に移行する。
これにより、リーダー15Aにおける情報取得処理SAは終了する。
なお、スレーブとして機能するリーダー15Bが複数存在する場合には、上記ステップSA26~SA30を当該リーダー15B毎に実行し、取得された全ての部品情報に対して、上記ステップSA31の重複判定処理とステップSA32の整理処理とを実行する。
これにより、通信コントローラ200における情報取得処理SAは終了する。
一方、上記ステップS3の判定処理にて、同一でないと判定された場合には(ステップS3、NO)、通信コントローラ200は、管理センタ110に、取得した情報を送信する情報送信処理SBを実行する。
まず、情報送信処理SB(ステップSB1~SB3)について説明する。
情報送信処理SBでは、図10に示すように、通信コントローラ200は、部品情報が新たに取得されている場合には、当該部品情報で、既に記憶している部品情報を更新する(ステップSB1)。この際、通信コントローラ200は、全ての識別装置30の部品情報が取得されている場合には、記憶している全ての部品情報を、新たに取得した部品情報で更新してもよく、異なると判断された部品情報のみ、新たに取得した部品情報で更新してもよい。また、現在取得されている部品情報を上記モニタ装置213に表示させてもよい。更に、エラー情報が取得されている場合には、当該モニタ装置213等により警告を発してもよい。
この後、通信コントローラ200は、通信ネットワーク120を介して、生成された送信情報を出力するために管理サーバ111に送信する(ステップSB3)。
これにより、油圧ショベル1における情報送信処理SBは終了する。
情報記憶処理では、図10に示すように、管理サーバ111は、予め設定された作業車両(例えば、油圧ショベル1)からの送信情報が受信されたか否かの判定処理を繰り返し実行している(ステップSC1)。
そして、送信情報が受信されたと判定すると(ステップSC1、YES)、管理サーバ111は、当該送信情報を受信した日時(時刻及び日付)を取得する(ステップSC2)。
この後、管理サーバ111は、受信した送信情報から部品情報やエラー情報を抽出し、これら情報とステップSC2にて取得された日時とを関連付けて記憶する(ステップSC3)。この際、上記ステップS3と同様の判定処理を実行し、過去に取得された部品情報と異なる部品情報やエラー情報を、管理サーバ111の管理者に報知してもよい。
これにより、管理サーバ111における情報記憶処理は終了し、ひいては、識別情報取得システム100における情報収集処理が終了する。
なお、上記情報収集処理では、オペレータが図示しないキースイッチをオンに操作した際にリーダー15の電源がONされて、情報取得処理SAが実施されるとした。しかしながら、上記のように、リーダー15の電源がONされるタイミングは、適宜変更可能である。
そして、管理サーバ111が受信した識別装置30の部品情報、及び、当該部品情報を油圧ショベル1が取得及び送信する際に関連付けた上記日時データが、過去に受信した部品情報及び日時データと異なれば、新たなフィルター20A,20B,20C及びエンジンEGの装着を認識できる他、部品交換された時期やエンジンEGがオーバーホールされた時期を把握できる。
このように、各リーダー15が適切に動作して、識別装置30の情報を確実に取得することは、上記識別情報取得システム100を構築する上で、非常に重要である。
図11~14は、フィルター20A,20Bのように、異なる被取付部品に取り付けられた2つの識別装置30の識別情報(部品情報)を、リーダー15A,15Bで取得する場合の様々な例を示す。
この場合、第2通信装置であるリーダー15Bは、取得した識別情報DEFを含む部品情報を、第1通信装置であるリーダー15Aに送信する。リーダー15Aは、自らが取得した識別情報ABCと、リーダー15Bから送信された識別情報DEFとを保持し、同じ内容の識別情報があるかを判定する。そして、リーダー15Aは、識別情報ABCと識別情報DEFとが異なるため、識別情報(部品情報)の統合は行わず、各識別情報ABC,DEFを含む部品情報を通信コントローラ200に送信する。
この場合、第2通信装置であるリーダー15Bは、取得した識別情報ABC,DEFを含む部品情報を、第1通信装置であるリーダー15Aに送信する。リーダー15Aは、自らが取得した識別情報ABC,DEFを含む部品情報と、リーダー15Bから送信された識別情報ABC,DEFを含む部品情報とを保持し、同じ内容の識別情報があるかを判定する。そして、リーダー15Aは、同じ識別情報ABCを含む部品情報同士と、識別情報DEFを含む部品情報同士とを統合する。リーダー15Aは、上記整理処理(統合処理)により、識別情報ABCを含む1つの部品情報と、識別情報DEFを含む1つの部品情報とが残るので、各識別情報ABC,DEFを含む部品情報を通信コントローラ200に送信する。
この場合、第2通信装置であるリーダー15Bは、取得した識別情報DEFを含む2つの部品情報を、第1通信装置であるリーダー15Aに送信する。リーダー15Aは、自らが取得した識別情報ABCを含む部品情報と、リーダー15Bから送信された2つの部品情報とを保持し、同じ内容の識別情報があるかを判定する。そして、リーダー15Aは、同じ識別情報DEFを含む部品情報同士を統合する。リーダー15Aは、上記整理処理(統合処理)により、識別情報ABCを含む1つの部品情報と、識別情報DEFを含む1つの部品情報とが残るので、各識別情報ABC、DEFを含む部品情報を通信コントローラ200に送信する。
なお、図13の例では、一方の識別装置30は、識別情報ABCを含む部品情報が記憶された2つの識別部品を有していたが、識別情報ABCを含む部品情報が記憶された1つの識別部品のみを備えていてもよい。この場合も、リーダー15Aが識別情報ABCを含む1つの部品情報のみを取得し、リーダー15Bが識別情報DEFを含む2つの部品情報を取得すれば、リーダー15Aは、図13の例と同じ統合処理を行うことになる。
この場合、第2通信装置であるリーダー15Bは、取得した3つの部品情報(識別情報がDEF,DEF,ABCの部品情報)を、第1通信装置であるリーダー15Aに送信する。リーダー15Aは、自らが取得した2つの部品情報(識別情報がABC,ABCの部品情報)と、リーダー15Bから送信された3つの部品情報(識別情報がDEF,DEF,ABCの部品情報)とを保持し、同じ内容の識別情報があるかを判定する。そして、リーダー15Aは、同じ識別情報ABCを含む部品情報同士と、識別情報DEFを含む部品情報同士とを統合する。リーダー15Aは、上記整理処理(統合処理)により、識別情報ABCを含む1つの部品情報と、識別情報DEFを含む1つの部品情報とが残るので、各識別情報ABC,DEFを含む部品情報を通信コントローラ200に送信する。
マスターとして機能するリーダー15A(第1通信装置)は、作業車両である油圧ショベル1においてスレーブとして機能するリーダー15B(第2通信装置)が配置されるエンジンルーム5A2より温度が低いポンプルーム5A1に配置される。これによれば、リーダー15Bの動作を制御するリーダー15Aを、許容温度範囲内の部位に配置でき、当該許容温度範囲内で動作させることができる。従って、リーダー15Aを適切に動作させることができ、リーダー15Bを適切に制御できる。
なお、本発明は上記実施形態に限定されるものではなく、本発明の目的を達成できる範囲での変形、改良等は本発明に含まれるものである。
上記実施形態では、第2通信装置としてのリーダー15Bは、情報判定手段156を有しておらず、当該リーダー15Bの情報保持手段155は、上記整理処理を実行しない構成とした。しかしながら、本発明はこれに限らない。すなわち、リーダー15Bも情報判定手段156を備える構成とし、当該情報判定手段156によりスレーブ側取得情報に同じ内容の部品情報が含まれると判定された場合に、リーダー15Bの情報保持手段155が、当該スレーブ側取得情報に含まれる部品情報のうち、同じ内容であると判定された部品情報を統合する上記整理処理を実行してもよい。例えば、図13及び図14の場合、リーダー15Bは、スレーブ側取得情報に、同じ識別情報DEFを含む2つの部品情報を保持している。これらの場合、リーダー15Bが情報判定手段156を備えていれば、リーダー15Bの情報保持手段155は、同じ識別情報DEFを含む2つの部品情報を統合してもよい。
これによれば、リーダー15Aに送信されるスレーブ側取得情報に同じ内容の部品情報が含まれることを防止できる。従って、当該スレーブ側取得情報を処理するリーダー15Aの負担を軽減できる。この他、スレーブ側取得情報の情報量を低減できるので、リーダー15Aに送信される情報量を低減できる。
なお、通信コントローラ200の機能をリーダー15Aが備えている場合は、リーダー15Aから直接管理サーバ111に部品情報を送信してもよい。
また、種別情報(品番)或いは固有情報(シリアル番号)の少なくとも一方が一致する部品情報を、同じ内容の部品情報と判定してもよい。すなわち、一台の作業車両(油圧ショベル1)において、識別装置30が取り付けられた部品は通常異なる部品であるため、種別情報も各識別装置30で異なる。従って、例えば、リーダー15A,15Bで同じ種別情報の識別情報を保持している場合、それらは同一の部品情報を受信したものと判定できる。
また、固有情報も通常、部品毎に異なるため、リーダー15A,15Bで同じ固有情報の識別情報を保持している場合、それらは同一の部品情報を受信したものと判定できる。
更に、リーダー15は、作業車両に1台のみ設けてもよい。識別装置が装着された被取付部品の数が少ない場合や、被取付部品が狭い範囲に集まっている場合などでは、1台のリーダー15を設けるだけで、すべての被取付部品の識別装置から部品情報を取得することができる。この場合も、リーダー15は、取得した部品情報に、識別情報が同じ部品情報が含まれているかを判定し、同じ情報が含まれていれば整理処理(統合処理)を行えばよい。
上記実施形態では、識別装置30A,30B,30Cは、フィルター20A,20B,20Cにそれぞれ取り付けられ、識別装置30Dは、エンジンEGに取り付けられるとした。しかしながら、本発明はこれに限らない。すなわち、識別装置30が取り付けられる被取付部品は、適宜変更或いは追加してもよく、作業車両を構成する部品(装置を含む)であれば、交換可能に設けられた交換部品でも、交換部品でなくてもよい。
Claims (6)
- 作業車両に設けられる識別情報取得システムであって、
複数の識別装置と、
前記複数の識別装置と通信する複数の通信装置と、を備え、
前記複数の通信装置は、
第1通信装置と、
前記第1通信装置によって動作が制御される第2通信装置と、を含み、
前記第1通信装置は、前記作業車両において前記第2通信装置が配置される部位より温度が低い部位に配置される
ことを特徴とする識別情報取得システム。 - 請求項1に記載の識別情報取得システムにおいて、
前記作業車両は、
エンジンが配置されるエンジンルームと、
前記エンジンルームとは別に設けられ、油圧ポンプが配置されるポンプルームと、を有し、
前記第1通信装置は、前記ポンプルームに配置され、
前記第2通信装置は、前記エンジンルームに配置される
ことを特徴とする識別情報取得システム。 - 請求項1又は請求項2に記載の識別情報取得システムにおいて、
前記第1通信装置の動作を制御する制御装置を備え、
前記第1通信装置は、
前記第2通信装置が正常に動作しているか否かを判定する判定手段と、
前記第2通信装置が正常に動作していないと判定されると、前記第2通信装置が正常に動作していない旨を示す動作情報を前記制御装置に送信する動作情報送信手段と、を有する
ことを特徴とする識別情報取得システム。 - 請求項1から請求項3のいずれか一項に記載の識別情報取得システムにおいて、
前記複数の通信装置によって取得された情報を処理する処理装置を備え、
前記複数の識別装置は、
前記第1通信装置と通信し、第1識別情報を保持する第1識別装置と、
前記第2通信装置と通信し、第2識別情報を保持する第2識別装置と、を含み、
前記第1通信装置は、
前記第1通信装置によって前記第1識別装置から取得された前記第1識別情報、及び、前記第2通信装置によって前記第2識別装置から取得された前記第2識別情報を保持する情報保持手段と、
前記情報保持手段によって保持された前記第1識別情報及び前記第2識別情報を、前記処理装置に送信する識別情報送信手段と、を有する
ことを特徴とする識別情報取得システム。 - 請求項1から請求項4のいずれか一項に記載の識別情報取得システムを備えることを特徴とする作業車両。
- エンジンが配置されるエンジンルームと、
前記エンジンルームとは別に設けられ、前記エンジンルームより温度が低く、油圧ポンプが配置されるポンプルームと、
第1識別情報を保持する第1識別装置と、
第2識別情報を保持する第2識別装置と、
前記ポンプルームに配置され、前記第1識別装置と通信して前記第1識別情報を取得する第1通信装置と、
前記エンジンルームに配置され、前記第1通信装置によって制御され、前記第2識別装置と通信して前記第2識別情報を取得する第2通信装置と、
前記第1通信装置を制御して、前記第1識別情報及び前記第2識別情報を処理する処理装置と、を有し、
前記第1通信装置は、
前記第2通信装置が正常に動作しているか否かを判定する判定手段と、
前記第2通信装置が正常に動作していないと判定されると、前記第2通信装置が正常に動作していない旨を示す動作情報を前記処理装置に送信する動作情報送信手段と、
前記第1識別装置から取得された前記第1識別情報、及び、前記第2通信装置によって前記第2識別装置から取得された前記第2識別情報を、前記処理装置に送信する識別情報送信手段と、を有する
ことを特徴とする作業車両。
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