Special vehicle operation information management system and computer program

Abstract

To provide a failure diagnosis system that identifies a cause of a failure of a work vehicle efficiently with reduced time loss.SOLUTION: A failure diagnosis system comprises: a control unit 10 used to operate a plurality of pieces of equipment of a work vehicle 5; a portable terminal 20 connected to the control unit for communication; and a server 30 connected to the portable terminal by wireless communication. The server includes a list generation unit 33 that generates a failure diagnosis list 34 of the equipment and a server-side communication unit 31 that transmits the failure diagnosis list to the portable terminal. The portable terminal includes: an acquisition unit 27 that acquires identification information of the work vehicle; a first communication unit 21A that transmits a diagnosis signal based on the failure diagnosis list to the control unit and receives from the control unit operation information 38 obtained by operating the control unit on the basis of the diagnosis signal; a determination unit 28 that determines a failure of the equipment on the basis of the operation information; and a second communication unit that transmits to the server information obtained by the acquisition unit and the determination unit. The failure diagnosis list is generated on the basis of the identification information.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a fault diagnosis system for a work vehicle, and a computer program for causing a terminal device of the fault diagnosis system to function. [Background technology]

[0002] Known examples of conventional work vehicles include dump trucks for transporting soil and sand, crane trucks for lifting luggage, and refuse collection vehicles for collecting refuse. When a malfunction occurs in a movable device of a work vehicle, it is often difficult for the user of the work vehicle to handle the malfunction, so the user generally requests a repair company to repair it. The repair company that receives the request actually operates the movable device in which the malfunction has occurred and checks it to identify the cause of the malfunction. As a method for identifying malfunctions in a work vehicle, for example, as in Patent Document 1, a method is known in which a fault diagnosis support computer is connected to the target vehicle. In Patent Document 1, a fault diagnosis support computer is connected to the target vehicle and operated, and a command to reproduce the operation of the movable device is input from the fault diagnosis support computer to the controller of the target vehicle. The input / output signal data at that time is compared with input / output signal data related to normal operation to identify the cause of the malfunction. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5391090 Summary of the Invention [Problem to be solved by the invention]

[0004] Generally, a work vehicle is configured with various options according to the user's requests, and the specifications of each vehicle are different. Therefore, when inputting an operation reproduction command by a fault diagnosis support computer as in Patent Document 1, the specifications of the target vehicle must be accurately understood and an operation reproduction command suitable for the specifications must be selected and input. Furthermore, in the method of Patent Document 1, if the structure of the target vehicle is not understood, it is difficult to identify the cause of the malfunction even if the input / output signal data is compared with the input / output signal data related to normal operation.

[0005] Therefore, in the past, in order to identify the cause of the defect, a repairer or the like who is familiar with the specifications and structure of the work vehicle must travel to the site of the target vehicle, or the work vehicle must be moved to the repair shop of the repairer. At the time of such travel, the cause of the defect cannot be identified, and naturally, the cause must be identified after arriving at the site, so the necessary replacement parts, work equipment, etc. must be prepared after the cause is identified. In particular, there may be cases where the repairer travels back and forth between the site and the repair shop just to make such preparations. Therefore, there is a problem in that a time loss occurs from the time the user notices the defect to the time the cause is identified, and also from the time the user starts dealing with the identified cause of the defect.

[0006] The present invention has been made in consideration of the above-mentioned circumstances, and aims to provide a fault diagnosis system and computer program for a work vehicle that efficiently identifies the cause of a malfunction in a work vehicle while reducing time loss. [Means for solving the problem]

[0007] The fault diagnosis system for a work vehicle according to the present invention includes a control unit used to operate a plurality of equipment provided on the work vehicle, a mobile terminal connected to the control unit for communication, and a server connected to the mobile terminal by wireless communication. The server has a list generating unit that generates a fault diagnosis list for the equipment, and a server-side communication unit that transmits the fault diagnosis list to the mobile terminal. The mobile terminal has an acquisition unit that acquires identification information of the work vehicle, a first communication unit that transmits a diagnostic signal based on the fault diagnosis list to the control unit and receives from the control unit operation information obtained by operating the control unit based on the diagnostic signal, a judgment unit that judges a fault of the equipment based on the operation information, and a second communication unit that is connected to the acquisition unit and the judgment unit and transmits information obtained by each of them to the server. The fault diagnosis list is generated based on the identification information. Here, the "equipment" broadly includes devices that are installed as standard on a work vehicle, and additional equipment, parts, etc., and for example, in a garbage collection vehicle, a garbage loading device, a garbage discharge device, etc. are examples of movable devices that are installed as standard on a garbage collection vehicle. In addition, options for waste collection trucks include a waste container inversion device, an on-board weight scale, an in-work sign, and an entanglement injury reduction device.

[0008] According to the above fault diagnosis system for a work vehicle, identification information for identifying each work vehicle is transmitted from the mobile terminal to the server, and the server generates a fault diagnosis list based on the identification information. In addition, in the judgment unit of the mobile terminal, a diagnosis signal based on the fault diagnosis list is used to operate the control unit, and a fault in the equipment is judged based on the operation information. Furthermore, judgment information regarding the fault is transmitted from the mobile terminal to the server. If the user of the work vehicle uses this mobile terminal, the user can judge the fault of the equipment without waiting for a repairman to arrive at the site of the work vehicle, and the time loss until the fault of the equipment is judged can be reduced. In addition, since the fault diagnosis list is generated based on the identification information for identifying the work vehicle, a fault diagnosis list for each work vehicle having different specifications can be accurately created, and the fault diagnosis of the work vehicle can be accurately performed based on the fault diagnosis list. Furthermore, for example, if a repairman accesses the server before moving to the site of the work vehicle and checks the information (information regarding the fault of the equipment and operation information) transmitted from the second communication unit, he or she can move to the site after preparing replacement parts, work equipment, etc.

[0009] According to a preferred aspect of the present invention, an identification object including the identification information is attached to the work vehicle, the mobile terminal includes a reading unit that reads the identification object, and the acquisition unit is configured to acquire the identification information based on the identification object read by bringing the reading unit close to the identification object.

[0010] According to the above aspect, when a user carrying a portable terminal obtains identification information of a work vehicle, the user moves close to the identifier of the work vehicle and brings the reader of the portable terminal close to the identifier. This allows the user to actually see and confirm the work vehicle from which identification information is to be obtained, thereby preventing the user from erroneously obtaining identification information of an unintended work vehicle.

[0011] According to a preferred aspect of the present invention, the mobile terminal has a display unit that displays the determination information of the determination unit.

[0012] According to the above aspect, the judgment information regarding the malfunction of the equipment (for example, "There is a problem with the opening and closing device") is displayed on the display unit of the mobile terminal, so that the user can know whether there is a malfunction and where the malfunction is by looking at the display unit.

[0013] According to a preferred aspect of the present invention, the equipment is selected from a plurality of equipment candidates and provided to the work vehicle. The server includes a storage unit that stores individual diagnosis lists for diagnosing the equipment candidates in correspondence with the respective equipment candidates. The list generating unit is configured to generate the fault diagnosis list by combining the individual diagnosis lists based on the identification information.

[0014] According to the above aspect, the individual diagnosis list corresponding to each of the equipment candidates is stored in the storage unit of the server, and the individual diagnosis lists are combined based on the identification information to generate a fault diagnosis list. Therefore, it is possible to generate a fault diagnosis list corresponding to each work vehicle equipped with different equipment.

[0015] According to a preferred embodiment of the present invention, the fault diagnosis list includes signal input / output information indicating a relationship between an output signal that the control unit outputs to the equipment based on the diagnostic signal and a normal input signal that is input to the control unit based on the output of the output signal.

[0016] According to the above aspect, for example, when operation information in which a control unit is operated based on a diagnostic signal is obtained as the relationship between an output signal from the control unit to an equipment and an input signal to the control unit, by comparing this operation information with signal input / output information, a malfunction of the equipment can be easily and accurately grasped.

[0017] The computer program according to the present invention is a computer program for causing a mobile terminal having a first communication unit, a second communication unit, and a calculation unit to function as a terminal device of a fault diagnosis system that communicates between a server having data on a plurality of accessories in a work vehicle and a control unit of the work vehicle. The calculation unit of the mobile terminal is caused to function as a determination unit that determines a fault in the accessories based on operation information of the control unit, and an acquisition unit that acquires identification information of the work vehicle, and the calculation unit is caused to function to transmit a diagnostic signal based on the data to the control unit via the first communication unit, receive from the control unit the result of the operation of the control unit based on the diagnostic signal as the operation information, and transmit information of the determination unit and the acquisition unit to the server via the second communication unit. Here, the "data" refers to data for diagnosing faults in accessories.

[0018] According to the above computer program, the calculation unit of the mobile terminal causes the determination unit to function to determine whether or not an accessory is malfunctioning based on the operation information of the control unit. The calculation unit is then caused to function to transmit information related to the determination by the determination unit to a server via the second communication unit. In this way, since the mobile terminal determines whether or not an accessory is malfunctioning, there is no need to wait for a repairman to arrive at the site of the work vehicle to determine whether or not the malfunction has occurred, and the time lost until the malfunction is determined can be reduced. In addition, for example, the repairman can access the server and check the information transmitted via the second communication unit (information related to the determination by the determination unit), so that the repairman can prepare replacement parts, work equipment, and the like before moving to the site. Effect of the Invention

[0019] As described above, according to the present invention, a user can determine whether an equipment malfunction has occurred without waiting for a repair person to arrive at the work vehicle site, thereby reducing the time lost until the equipment malfunction has been determined. [Brief description of the drawings]

[0020] [Figure 1] 1 is a configuration diagram of a fault diagnosis system according to an embodiment of the present invention. [Diagram 2] 2 is a block diagram showing a schematic diagram of a control system of the work vehicle. FIG. [Diagram 3] 1 is a block diagram of a fault diagnosis system according to an embodiment. [Figure 4] 4 is a flowchart showing how to perform a fault diagnosis on a work vehicle using the fault diagnosis method according to the embodiment. [Diagram 5] 1A is a front view of a mobile terminal before being connected to a control unit of a work vehicle, and FIG. 1B is a front view of the mobile terminal after being connected to the control unit of the work vehicle. [Figure 6] 1A is a diagram conceptually showing an individual diagnosis list, and FIG. 1B is a diagram conceptually showing a fault diagnosis list. [Figure 7] FIG. 4 is a diagram showing operation information obtained by performing a fault diagnosis. [Figure 8] FIG. 2 is a front view of the mobile terminal, showing a skeleton diagram of the work vehicle and operation information displayed thereon; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in Fig. 1, a fault diagnosis system 1 according to this embodiment is composed of a control unit 10 provided in a work vehicle 5, a mobile terminal 20 held and carried by a user 3, and a server 30 capable of wireless communication (capable of sending and receiving data) with the mobile terminal 20 via the Internet 2. There is no limitation on the type of work vehicle 5, but here, a garbage collection vehicle that collects garbage will be taken as an example for description.

[0022] As shown in FIG. 1, the work vehicle 5 (refuse collection vehicle 5) according to this embodiment includes a driver's cab 41, a refuse input box 42 into which refuse is input, a refuse storage box 43 that communicates with the refuse input box 42 and stores the refuse, and a refuse loading device 44 provided in the refuse input box 42. The refuse input into the refuse input box 42 is loaded into the refuse storage box 43 by the refuse loading device 44 and transported. The refuse loading device 44 includes a slider (not shown) that can slide up and down, and a compression plate (not shown) that is provided at the lower end of the slider so as to be rotatable back and forth. One end of a slide cylinder 441 is attached to the slider. The other end of the slide cylinder 441 is attached to the side wall of the refuse input box 42. When the slide cylinder 441 is extended, the slider and the compression plate rise, and when the slide cylinder 441 is retracted, the slider and the compression plate descend. The retracted state of the slide cylinder 441 is detected by a retraction detection sensor 442, and the extended state is detected by an extension detection sensor 443. A press cylinder 446 is provided between the slider and the compression plate, and the compression plate rotates back and forth relative to the slider by the extension and contraction of the press cylinder 446. When the loading button 444 provided on the garbage input box 42 is pressed, first the compression plate is inverted backward by the retraction of the press cylinder 446, and then the compression plate descends by the retraction of the slide cylinder 441, and the garbage in the garbage input box 42 is primarily compressed. Next, the press cylinder 446 is extended to rotate the compression plate forward, compressing the garbage a second time, and then the slide cylinder 441 is extended to raise the compression plate, scooping up the garbage and loading it into the garbage storage box 43.

[0023] This garbage collection vehicle 5 is designed to collect garbage in a specified garbage container, and is equipped with a garbage container inverting device (not shown) that inverts the garbage container to dump the garbage into a garbage dump box 42. The garbage container inverting device is driven by an inverting cylinder 445 (see FIG. 2). In this embodiment, not only the garbage loading device 44 and the garbage container inverting device, but also other devices and parts (e.g., work lights) mounted on the work vehicle 5 correspond to "equipment".

[0024] The control system of the garbage collection vehicle 5 includes a control unit 10 and a control valve unit 45, as shown in Fig. 2. The control unit 10 receives operation signals from the loading button 444, detection signals from the contraction detection sensor 442 and the extension detection sensor 443, and outputs operation signals to the control valve unit 45 based on these signals so that the garbage loading device 44 and the garbage container inverting device operate as desired. The control valve unit 45 operates in response to the operation signal from the control unit 10, and supplies and discharges hydraulic oil to the slide cylinder 441 and the inverting cylinder 445.

[0025] The control unit 10 includes a box-shaped case and an electronic circuit board provided inside the case. A sticker on which a matrix type two-dimensional code (hereinafter referred to as two-dimensional code) 15 such as a QR code (registered trademark) is printed is attached to the case. A serial number is registered in the work vehicle 5 at the manufacturing site before shipping. The serial number is registered for each work vehicle 5, and the work vehicle 5 has a unique registration number. The two-dimensional code includes the serial number of the work vehicle 5 coded as identification information for identifying the work vehicle 5. In this embodiment, the two-dimensional code corresponds to the "identification body", and the serial number corresponds to the "identification information". The serial number may be registered not only before shipping, but also after shipping. The place of registration is not limited to the manufacturing site. Since registration may be performed after shipping, the present invention is not limited to new work vehicles 5, and can be applied to work vehicles 5 that have already been used.

[0026] FIG. 3 is a block diagram of the fault diagnosis system 1. The control unit 10 includes a communication device 11 that wirelessly communicates with the mobile terminal 20, a calculation device 12, an identification data memory 13, and a vehicle data memory 14. The identification data memory 13 stores data (hereinafter, referred to as identification data) related to identification information (here, the serial number of the work vehicle 5) for identifying the work vehicle 5. Based on this identification data, the work vehicle 5 can be distinguished from other work vehicles, and the work vehicle 5 can be uniquely identified. The vehicle data memory 14 stores vehicle data of the work vehicle 5. The identification data memory 13 and the vehicle data memory 14 may be physically configured by the same memory, or may be configured by different memories. Note that the vehicle data is various data related to the work vehicle 5 (for example, data related to the specifications, driving state, driving history, maintenance, etc. of the work vehicle 5). The work vehicle 5 according to this embodiment includes a plurality of sensors (not shown) in addition to the contraction detection sensor 442 and the extension detection sensor 443. For example, various data detected by these sensors and data obtained by combining these data constitute the vehicle data. Based on the vehicle data, the driving history of the work vehicle 5 can be confirmed, for example.

[0027] The mobile terminal 20 is a mobile terminal device that can be operated by a user directly by hand. Here, the mobile terminal device refers to an information terminal device that the user 3 can carry with him / her. The mobile terminal device may be, for example, a general-purpose mobile terminal device such as a smartphone, a mobile phone, a tablet computer, or a notebook computer, or may be a dedicated mobile terminal device for the fault diagnosis system 1. The mobile terminal 20 has a first communication unit 21A that wirelessly communicates with the control unit 10, a second communication unit 21B that wirelessly communicates with the server 30, a calculation unit 25, an input unit 22, a display unit 23, a camera 24 as an imaging device, and a memory 26. The calculation unit 25 has an acquisition unit 27 and a judgment unit 28. Each of the acquisition unit 27 and the judgment unit 28 is connected to the second communication unit 21B so as to be able to transmit and receive information (signals). The input unit 22 has a function used by the user 3 to input information, and is, for example, a button or a touch panel display. It is also possible to use a device having a voice input function as the input unit 22. The display unit 23 is a device that displays characters, figures, images, etc., and is, for example, a liquid crystal display, an organic EL display, etc. Note that instead of connecting the mobile terminal 20 and the control unit 10 by wireless communication, they may be connected by a communication cable for wired communication.

[0028] In this embodiment, the mobile terminal 20 is configured by a smartphone. The memory 26 stores application software (computer program) that causes the smartphone to function as a terminal device of the fault diagnosis system 1 that communicates between the server 30 and the control unit 10 of the work vehicle 5. By starting this application software, a general-purpose smartphone can be made to function as a terminal device of the fault diagnosis system 1 for the work vehicle. By starting the application software, the calculation unit 25 functions as a determination unit 28 that determines a fault in an accessory based on the operation information of the control unit 10 (operation information 38 described later). The calculation unit 25 also functions as an acquisition unit 27 that acquires identification information of the work vehicle 5. Furthermore, the calculation unit 25 functions to transmit a diagnosis signal based on data to the control unit 10 via the first communication unit 21A, and to receive from the control unit 10 the result of the operation of the control unit 10 based on the diagnosis signal as operation information. The calculation unit 25 also functions to transmit information of the determination unit 28 and the acquisition unit 27 to the server 30 via the second communication unit 21B.

[0029] The server 30 is, for example, a computer that manages the work vehicle 5 based on the vehicle data of the work vehicle 5. The server 30 is installed, for example, on the premises of a manufacturer that manufactures the work vehicle 5, a repair shop that maintains the work vehicle 5, or a company to which the user 3 of the work vehicle 5 belongs. The server 30 has a server-side communication unit 31 that wirelessly communicates with the second communication unit 21B via the Internet 2, a calculation unit 32, a list generation unit 33, and a storage unit 36. The list generation unit 33 generates a fault diagnosis list 34 for performing fault diagnosis on the work vehicle 5. The fault diagnosis list 34 includes signal input / output information 35 that indicates the relationship between an input signal input to the control unit 10 and a normal output signal when the input signal is input. The storage unit 36 ​​stores an individual diagnosis list 37 for performing fault diagnosis on the equipment candidates (including equipment mounted on other work vehicles in addition to equipment mounted on the work vehicle 5) corresponding to each equipment candidate, operation information 38, and judgment information 39. The list generator 33 generates a fault diagnosis list 34 by combining the individual diagnosis lists 37 based on the identification information.

[0030] Next, a method for performing fault diagnosis on a work vehicle 5 using the fault diagnosis system 1 according to this embodiment will be described with reference to the flowchart in Fig. 4. Here, it is assumed that the first communication unit 21A of the mobile terminal 20 and the communication device 11 of the control unit 10 of the work vehicle 5 perform wireless communication via Bluetooth (registered trademark). It is assumed that the serial number of the work vehicle 5 that the user 3 is about to use is "222222".

[0031] The user 3 operates the mobile terminal 20 carried by the user to start the application software described above (step S1 in FIG. 4). Here, data (identification data) including the serial number of the work vehicle 5 is transmitted from the control unit 10 (step S2). The first communication unit 21A of the mobile terminal 20 receives a signal transmitted from the control unit 10 of the work vehicle 5 in order to perform pairing (step S3). The signal transmitted from the control unit 10 includes data of the serial number of the work vehicle 5. The serial number of the work vehicle 5 is input to the calculation unit 25 of the mobile terminal 20. Then, as shown in FIG. 5(a), the display unit 23 of the mobile terminal 20 displays the serial number "222222" of the work vehicle 5 to be connected. At this time, if other work vehicles 5 are also parked in the vicinity, the serial numbers of these work vehicles (for example, "111111", "333333") are also displayed in a list. The strength of the signal depends on the distance between the mobile terminal 20 and the control unit of each work vehicle. Furthermore, the strength of the signal received by the mobile terminal 20 also changes depending on the position of the user 3. Therefore, depending on the position of the user 3 holding the mobile terminal 20, there may be cases where the strength of a signal received from a control unit of another work vehicle is stronger than the signal received from the control unit 10 of the work vehicle 5.

[0032] Furthermore, when the above-mentioned application software is started, an image 233 is displayed on the display unit 23 of the mobile terminal 20, prompting the user to read the two-dimensional code of the work vehicle, as shown in Fig. 5(a). A sticker with a two-dimensional code 15 printed thereon is affixed to the case of the control unit 10 of the work vehicle 5 used by the user 3. Therefore, upon seeing the image 233, the user 3 moves to the front of the case of the control unit 10.

[0033] Next, the user 3 aims the camera 24 of the mobile terminal 20 at the two-dimensional code 15 and reads the two-dimensional code with the camera 24 (step S4). The captured image 234 of the camera 24 is displayed on the display unit 23. The user 3 adjusts the position of the mobile terminal 20 so that the two-dimensional code 15 is included in the captured image 234, so that the two-dimensional code 15 can be easily read by the mobile terminal 20.

[0034] The two-dimensional code 15 contains data relating to the serial number of the work vehicle 5. The calculation unit 25 of the mobile terminal 20 causes the acquisition unit 27 to acquire the serial number from the two-dimensional code 15 of the work vehicle 5 read by the camera 24. At this time, the calculation unit 25 functions as an acquisition unit. Then, the calculation unit 25 causes the display unit 23 to display an image 235 representing the serial number, as shown in Fig. 5(b).

[0035] While looking at display unit 23, user 3 determines whether or not this serial number is included in the pairing candidates (step S5). That is, user 3 determines whether or not the identification information included in the data transmitted from communication device 11 of control unit 10 (in other words, the identification information included in the identification data received by first communication unit 21A) matches the identification information read by camera 24.

[0036] When the user 3 determines that the two pieces of identification information match, the user 3 selects the control unit 10 that has received the identification data including the serial number as the partner for wireless connection. That is, the control unit 10 of the work vehicle 5 is selected from among a plurality of work vehicles as the partner for pairing. The calculation unit 25 then approves the control unit 10 as the partner for pairing (step S6).

[0037] In this embodiment, as shown in FIG. 5(a) and FIG. 5(b), when serial numbers "111111", "222222", and "333333" are listed as candidates for pairing, the serial number "222222" read from the two-dimensional code 15 is included, and therefore the control unit 10 of the work vehicle 5 with this serial number "222222" is approved as a pairing partner. For example, the user 3 taps with his / her finger on "222222" (see FIG. 5(a)) displayed on the display unit 23 to select the serial number "222222". As a result, the control unit 10 of the work vehicle 5 with the serial number "222222" is approved as a pairing partner. As a result, the calculation unit 25 performs pairing with the control unit 10 of the work vehicle 5. That is, the mobile terminal 20 and the control unit 10 of the work vehicle 5 perform an authentication operation to permit wireless communication with each other. When pairing is completed, the mobile terminal 20 is connected to the control unit 10 (see FIG. 5(b)), and the mobile terminal 20 and the control unit 10 perform one-to-one wireless communication.

[0038] After the pairing between the mobile terminal 20 and the control unit 10 is completed, the second communication unit 21B of the mobile terminal 20 accesses the communication unit of the server 30 via the Internet 2. At this time, the input unit 22 of the mobile terminal 20 is used to input an ID and a password required for security to the display unit 23. As a result, the mobile terminal 20 and the server 30 are connected so as to be able to communicate with each other via wireless communication (step S7). Note that, in the present embodiment, a case has been described in which the mobile terminal 20 and the server 30 are connected after the pairing between the mobile terminal 20 and the control unit 10 is completed, but conversely, the pairing between the mobile terminal 20 and the control unit 10 may be performed after the mobile terminal 20 and the server 30 are connected.

[0039] When the user 3 operates the mobile terminal 20, the calculation device 12 of the control unit 10 transmits the vehicle data stored in the vehicle data memory 14 from the communication device 11, and the first communication unit 21A of the mobile terminal 20 receives the vehicle data. As a result, the vehicle data is collected from the control unit 10 of the work vehicle 5 to the mobile terminal 20. The vehicle data collected by the mobile terminal 20 is transmitted to the server 30 via the Internet 2. The server 30 then manages the driving history of the work vehicle 5 based on the vehicle data.

[0040] As described above, fault diagnosis according to this embodiment is performed using the mobile terminal 20 communicatively connected to the work vehicle 5 and the server 30 via wireless communication. When the user 3 finds a malfunction in the work vehicle 5 and requests a repairman to repair it, the user 3 first taps "Fault Diagnosis" displayed on the display unit 23 of the mobile terminal 20 to start fault diagnosis. When fault diagnosis is started, the second communication unit 21B of the mobile terminal 20 transmits identification information (here, the serial number "222222") of the currently paired work vehicle 5 to the server-side communication unit 31 of the server 30 (step S8). Then, the server 30 receives the identification information transmitted from the second communication unit 21B (step S9).

[0041] The server 30 generates a fault diagnosis list for the work vehicle 5 based on the received identification information. The generation of the fault diagnosis list will be specifically described. An equipment mounting list 361 is stored in the storage unit 36 ​​of the server 30. This equipment mounting list 361 is a compilation of serial numbers of multiple work vehicles 5 manufactured in the past, and the body type, chassis type, manufacturing date, user name, equipment items, etc. corresponding to each serial number. As shown in FIG. 6(a), the storage unit 36 ​​of the server 30 also stores individual diagnosis lists 37 (371 to 375, ...). The individual diagnosis lists 37 exist in the same number as the number of multiple equipment candidates that may be equipped on various work vehicles. One individual diagnosis list 37 corresponds to one equipment. The individual diagnosis list 37 includes signal input / output information indicating the relationship between an output signal (e.g., an output signal to a solenoid of a control valve unit) output from the control unit of the work vehicle for one piece of equipment and a normal input signal (e.g., a detection signal input from a sensor) input to the control unit when the output signal is output. For example, the work vehicle 5 of this embodiment is equipped with a garbage loading device 44 and a garbage container inverting device selected from a plurality of equipment candidates. Then, individual diagnosis lists corresponding to each piece of equipment are stored in the storage unit 36, such as an individual diagnosis list 371 for diagnosing a fault in the garbage loading device 44 and an individual diagnosis list 372 for diagnosing a fault in the garbage container inverting device. The individual diagnosis list 371 indicates with a circle mark that, when an output signal of "output 1" is output from the control unit 10 to perform "operation A" to diagnose a fault in the garbage loading device 44, if there is no fault in the garbage loading device 44, an input signal of "input 1" (normal input signal) is obtained. That is, signal input / output information 351 of output 1 to input 3 indicates the relationship between the output signal output from control unit 10 and the normal input signal when the output signal is output. Similarly, individual diagnosis list 372 indicates signal input / output information 352 when "operation a" is performed, and individual diagnosis list 373 indicates signal input / output information 353 when "operation b" is performed.

[0042] As described above, the storage unit of the server 30 stores in advance the equipment mounting list 361 and a plurality of individual diagnosis lists 37. Since the individual diagnosis list 37 is stored in the storage unit 36 ​​of the server 30, the risk of information leakage due to loss of the mobile terminal 20, etc. is reduced compared to the case where the individual diagnosis list 37 is stored in the mobile terminal 20.

[0043] The server 30 uses the received identification information (serial number) as a key to extract an equipment item corresponding to the corresponding serial number from the equipment mounting list 361. The server 30 then selects individual diagnosis lists 371, 372, 372 of equipment corresponding to the extracted equipment item from among the multiple individual diagnosis lists 37. The list generation unit 33 generates a fault diagnosis list 34 corresponding to the work vehicle 5 by combining all the individual diagnosis lists selected by the calculation unit 32. For example, when the individual diagnosis lists corresponding to each equipment of the work vehicle 5 are the individual diagnosis lists 371 to 373, the list generation unit 33 generates the fault diagnosis list 34 shown in FIG. 6(b) by combining the individual diagnosis lists 371 to 373. The fault diagnosis list 34 includes signal input / output information 35 when each of the operations A, a, b, ... is performed.

[0044] In this way, the configuration in which an equipment item is extracted using identification information (serial number) as a key to generate a fault diagnosis list has the following advantages over a configuration in which fault diagnosis lists corresponding to identification numbers are stored and a fault diagnosis list is selected using the identification information as a key. For example, with respect to equipment A, which rarely breaks down when the equipment is in use for a short period of time and is more likely to break down as the equipment is used for a long period of time, a fault diagnosis list is generated for a work vehicle that has been in use for a short period of time without extracting an individual diagnosis list corresponding to equipment A. On the other hand, for a work vehicle that has been in use for a long period of time, an individual diagnosis list corresponding to equipment A is extracted to generate a fault diagnosis list. In this way, an appropriate fault diagnosis list can be generated according to the number of years the work vehicle has been in use.

[0045] The generated fault diagnosis list 34 is transmitted from the server-side communication unit 31 of the server 30 to the second communication unit 21B of the mobile terminal 20 (step S10). Then, the fault diagnosis list 34 transmitted from the server-side communication unit 31 of the server 30 is received by the second communication unit 21B of the mobile terminal 20 (step S11).

[0046] The calculation unit 25 of the mobile terminal 20 causes the work vehicle 5 to perform operations A, a, b, ... according to the fault diagnosis list 34, and receives the operation information 38 at that time. Specifically, based on the fault diagnosis list 34, a diagnostic signal for performing operation A is transmitted from the first communication unit 21A to the control unit 10 (communication device 11) (step S12). When the control unit 10 receives the diagnostic signal for performing operation A, it outputs an output signal (output 1) corresponding to operation A to, for example, the control valve unit 45, and operates the corresponding accessory (step S13). An input signal (for example, a sensor detection signal) when the accessory operates according to the output signal of output 1 is input to the control unit 10. The output signal and the detection result of the input signal related to this operation A are stored in the vehicle data memory 14. Similarly, for the remaining operations a, b, ..., a diagnostic signal is transmitted to the control unit 10, and the output signal output from the control unit 10 and the input signal input to the control unit 10 at that time are stored in the vehicle data memory 14. In the above steps S12 and S13, it is difficult to detect, for example, a break in the signal line between the loading button 444 and the control unit 10. Therefore, when detecting a break in the signal line, a display is displayed on the display unit 23 of the mobile terminal 20 to prompt the user to press the loading button 444. When the loading button 444 is pressed, the presence or absence of an input signal from the loading button 444 to the control unit 10 is detected, whereby the break in the signal line can be detected.

[0047] When all the operations listed in the fault diagnosis list 34 have been performed, operation information 38 (detection results of output signals and input signals) for each operation, as shown in Fig. 7, is transmitted from the communication device 11 to the second communication unit 21B (step S14). When the mobile terminal 20 receives the operation information 38 from the communication device 11, it first displays a skeleton diagram of the work vehicle 5 on the display unit 23, as shown in Fig. 8, in order to display the operation information 38 in a visually easy-to-understand manner. Then, for each of the operations A, a, b, ..., the device to which the control unit 10 output an output signal and the device that input an input signal to the control unit 10 are surrounded by color-coded frames (for example, blue and red frames), so that the detection results of the output signals and the input signals as well as the installation positions of the devices can be visually grasped (step S15).

[0048] The judgment unit 28 of the mobile terminal 20 compares the fault diagnosis list 34 (see FIG. 6(b)) including the regular signal input / output information 35 with the operation information 38 (see FIG. 7) for each operation, and identifies the parts where the state of the input / output signal (position and presence or absence of the circle mark) differs, thereby judging a fault in the work vehicle 5. At this time, the calculation unit 25 functions as the judgment unit 28 that judges a fault in the work vehicle 5 based on the operation information when the control unit 10 is operated based on the fault diagnosis list 34. If there is no fault in the work vehicle 5, the circle mark in the operation information 38 should match the circle mark in the fault diagnosis list 34. However, in the case of the operation information 38, the input signal of "input 3" is not detected when the operation b is performed (hatched part 38A), and a fault in the device that outputs this input 3 or a break in the wiring leading to the device may be considered. In this case, the display unit 23 of the work vehicle 20 displays judgment information 39, for example, "XX device or its wiring is abnormal" (step S16).

[0049] The second communication unit 21B of the mobile terminal 20 transmits the operation information 38 and the judgment information 39, "There is an abnormality in the XX device or its wiring," to the server-side communication unit 31 of the server 30 (step S17). When the server-side communication unit 31 of the server 30 receives the operation information 38 and the judgment information 39 (step S18), these are stored in the memory unit 36 ​​of the server 30 (step S19).

[0050] Therefore, the repairer who receives the repair request from the user 3 can identify the cause of the malfunction and immediately know the replacement parts required to solve the malfunction by accessing the server 30 and checking the operation information 38 and judgment information 39 of the work vehicle 5 without actually operating the work vehicle 5 to perform a malfunction diagnosis. Therefore, when the repairer moves to the site of the work vehicle 5 to perform the repair, the repairer can bring the replacement parts with him / her and move to the site of the work vehicle 5 in advance, so that the repairer can efficiently solve the malfunction of the work vehicle 5 without having to go back and forth between the site just to identify the cause of the malfunction. Also, when the work vehicle 5 is brought to the repair shop of the repairer to perform the repair, the cause of the malfunction can be understood before the work vehicle 5 arrives at the repair shop, and the replacement parts can be arranged in advance. Therefore, the period from the arrival of the work vehicle 5 at the repair shop to the start of part replacement can be shortened, and the malfunction can be efficiently solved.

[0051] In this embodiment, when pairing the work vehicle 5 with the mobile terminal 20, the user 3 judges whether the identification information included in the data transmitted from the communication device 11 of the control unit 10 matches the identification information read by the camera 24, and selects the pairing partner. Alternatively, the above judgment may be automatically performed by the calculation unit 25 of the mobile terminal 20, etc. Approval of the wireless connection may be automatically performed. In addition, without reading the two-dimensional code 15 by the camera 24, the control unit (work vehicle) that transmits the signal with the highest signal strength among the signals transmitted from the work vehicle and received by the mobile terminal 20 may be automatically selected as the pairing partner. In this case, since the serial number is included in the signal transmitted from the work vehicle, this serial number is transmitted to the server 30 as the identification information in step S8 of FIG. 4.

[0052] The reading unit that reads the identification information of the identifying object is not limited to the camera 24 built into the mobile terminal 20, and may be a device that reads the identification information when brought close to the identifying object. For example, NFC (Near Field Communication) may be used. The identifying object may be a contactless IC tag that has the identification information as electronic data, and the reading unit (acquisition unit) may be a reader that wirelessly communicates with the contactless IC tag. The identifying object may be configured to output sound waves such as ultrasonic waves, and the reading unit may be configured to receive the sound waves. When the identifying object and the reading unit perform short-distance wireless communication, approval of the wireless communication may be performed automatically.

[0053] The above-mentioned fault diagnosis system can also be used for, for example, pre-shipment inspection of work vehicles, which can reduce the number of inspection steps that were previously performed manually by inspectors.

[0054] Although the embodiment of the present invention has been described above, the embodiment is merely an example, and various other embodiments are possible. For example, the work vehicle may be a container detachable vehicle configured to be able to load and unload containers (packing boxes) or a vehicle equipped with a loading platform lifting device at the rear, in addition to the exemplified refuse collection vehicle. [Explanation of symbols]

[0055] 1. Fault diagnosis system 5. Work vehicles 10 Control section 11. Communications equipment 12 Arithmetic unit 13 Identification data memory 14 Vehicle Data Memory 15 Matrix type two-dimensional code (identifier) 20 Mobile Devices 21A First Communication Department 21B Second Communication Department 22 Input section 23 Display section 24 Camera (reader) 25 Arithmetic section 26 Memory 27 Acquisition Department 28 Judgment Department 30 Servers 31 Server side communication section 32 Arithmetic section 33 List Generation Unit 34 Fault diagnosis list 35 Signal input / output information 36 Memory section 37 Individual Diagnosis List 38 Operation information 39 Judgment information 44 Refuse loading device (equipment) 361 Equipment List

Claims

1. A special vehicle operation information management system for managing the operation information of a special vehicle, comprising: A server that communicates and connects with an external terminal; The server includes: An authentication information receiving unit that receives authentication information input by the external terminal; An information access unit that makes the external terminal accessible by the authentication information for basic information based on the identification information of the special vehicle or the user; A work target transmitting unit that transmits work target information of work performed by the special vehicle according to the identification information to the external terminal; An operation information receiving unit that receives the operation information of the special vehicle performed based on the work target information; An operation information storage unit that stores the operation information in association with the identification information; A special vehicle operation information management system, characterized by comprising the above components.

2. The special vehicle is a garbage collection vehicle, and the work performed by the special vehicle is garbage collection work. The work target transmitting unit: Comprises a display processing unit that enables the external terminal to display the work target information based on the time when the garbage collection work is performed. The special vehicle operation information management system according to claim 1, characterized by comprising the above components.

3. The work target transmitting unit transmits to the external terminal: A process of transmitting a signal to operate the equipment of the garbage collection vehicle; A process of receiving the operation information of the equipment based on the transmitted signal; A process of performing a display to prompt the garbage collection work based on receiving the operation information of the equipment; A process of receiving and displaying the operation information of the equipment after the garbage collection work. The special vehicle operation information management system according to claim 2, characterized by transmitting the work target information for performing the above processes.

4. A computer program, characterized by executing the special vehicle operation information management system according to any one of claims 1 to 3. ​ ​

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