JP2007003468A - Time integrating device, management device and vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a cumulative use time calculated before a failure from another device even if the device fails, in a time integration device mounted on a vehicle and for calculating the cumulative use time of the vehicle, and a time integration device After the repair of the vehicle, the exact accumulated usage time of the vehicle is calculated.
A display control apparatus 10 periodically transmits a calculated accumulated usage time to a controller 30 via a communication unit 15, and stores the accumulated usage time as backup data. When a backup data acquisition command is input from the outside via the operation unit 17, a backup data acquisition request is transmitted to the controller 30, and the backup data transmitted from the controller 30 is stored in the memory 13. It is determined whether or not it is longer than the cumulative usage time. If the backup data is longer than the cumulative usage time, this backup data is stored in the memory 13 as the cumulative usage time.
[Selection] Figure 1

Description

  The present invention relates to a time integration device that calculates the cumulative usage time of an industrial vehicle, a management device that backs up the calculated cumulative usage time, and a vehicle equipped with the time integration device and the management device.

2. Description of the Related Art Conventionally, a time accumulator that is mounted on an industrial vehicle such as a forklift and calculates a cumulative usage time of the vehicle is known. This device is a so-called hour meter. When a vehicle key switch is turned on, the time is measured from the time when the vehicle is turned on, and the accumulated usage time calculated by accumulating the measured usage time is stored in an internal EEPROM or the like. And is displayed on display means such as a display, and is used for vehicle management, security, evaluation, or the like (see, for example, Patent Document 1).
Japanese Patent Publication No. 8-25412

  However, in the above time integration device, for example, if the device breaks down and the device itself is replaced, the accumulated usage time calculated by the failed device cannot be reflected in the new time integration device. The apparatus starts integration from the usage time 0. For this reason, the time stored in the new time integrating device and displayed on the display is not the accumulated usage time of the vehicle, but the accumulated usage time of the device after the time integration device is replaced, and the vehicle is not evaluated correctly. There was a fear. In addition, if the accumulated use time stored in the EEPROM or the like is erased when the device breaks down, it is impossible to grasp the accurate accumulated use time, and there is a problem that it is not sufficient for vehicle management. .

  The present invention has been made in view of these problems. In a time accumulating device that is mounted on an industrial vehicle and calculates the cumulative usage time of the vehicle, even if this device fails, the cumulative usage time calculated before the failure. It is an object of the present invention to be able to read out from other devices and to calculate an accurate accumulated usage time of the vehicle after replacement of the time integration device.

  The invention according to claim 1, which has been made to achieve such an object, is a first accumulator that is mounted on an industrial vehicle and that accumulates the usage time of the vehicle timed by a built-in timekeeping means and calculates the accumulated usage time. And cumulative time storage means for storing the cumulative usage time calculated by the first integration means in the first storage means, and the cumulative usage time stored in the first storage means by the cumulative time storage means for the display means. A time control device comprising: a display control means for displaying; a first communication means for communicating with an external management device; and the accumulation via the first communication means to the management device When the accumulated time is transmitted to the management apparatus as backup data by transmitting the used time, and the backup data acquisition command is input from the outside, the first The backup data acquisition request is transmitted to the management device via a communication unit, and after the transmission, when the first communication unit receives the backup data transmitted from the management device, the received backup data is transmitted to the management device. It is determined whether or not the accumulated usage time is longer than the cumulative usage time stored in one storage means, and when the backup data is larger than the cumulative usage time, the backup data is stored in the first storage means as the cumulative usage time. Backup data storage means.

  As described above, the time integration device of the present invention is mounted on an industrial vehicle, integrates the usage time of the vehicle timed by the built-in time measurement means, and calculates the accumulated usage time, and the first integration. For performing communication between an accumulated time storage means for storing the accumulated use time calculated by the means in the first storage means, a display control means for displaying the accumulated use time on the display means, and an external management device A first communication unit, and the accumulated time transmitting unit transmits the accumulated use time to the management device via the first communication unit, and causes the management device to store the accumulated use time as backup data.

  When a backup data acquisition command is input from the outside, the backup data storage means transmits a backup data acquisition request to the management device, and then receives the backup data transmitted from the management device. It is determined whether or not the data is longer than the cumulative usage time stored in the first storage means. If the backup data is larger than the cumulative usage time, this backup data is stored in the first storage means as the cumulative usage time. To do.

  That is, according to the time integration device according to claim 1, since the accumulated use time is transmitted to the management device and stored as backup data, even if the time accumulation device fails and the accumulated use time is erased, the management device The backup data is stored in the memory, and it is possible to prevent the calculated accumulated usage time from being lost. And backup from the management device by inputting backup data acquisition command from the operation unit provided in the time integrating device, external device such as personal computer connected to the time integrating device, or wireless communication etc. Since the data can be acquired and stored in the first storage means, the usage time can be accumulated again based on the stored data, and even after the time accumulator is repaired or replaced, Accumulated usage time can be calculated and stored in the first storage means and displayed on the display means.

  Further, since the backup data transmitted from the management device is stored in the first storage means as the cumulative use time only when the cumulative use time stored in the first storage means is greater than the cumulative use time, It is possible to prevent unauthorized tampering such as shortening.

Note that the backup data referred to here means a copy of the accumulated usage time as described above.
Next, according to a second aspect of the present invention, in the time integrating device according to the first aspect, when the first communication means receives the data transmitted from the management apparatus, the received data is stored in the first storage means. The reception data storage means is provided.

  According to the time integrating device of the second aspect configured as described above, when the first communication unit receives the data transmitted from the management device, the received data storage unit stores the received data in the first storage unit. Since it is stored, it can also be used as a device for backing up various data used on the management device side.

  According to a second aspect of the present invention, the received data storage means of the time accumulating device according to the third aspect is provided when the received data is data obtained by adding identification information to backup data stored in the management device. Determines whether or not the identification information is registered in advance, and if this identification information is authorized, the backup data may be stored in the first storage means as the accumulated usage time. .

  In this way, by adding the identification information to the backup data stored in the management device and transmitting it to the time integrating device, the backup data can be stored regardless of the value of the accumulated usage time stored in the first storage means. Since the accumulated usage time can be stored in the first storage means, the accumulated usage time can be freely rewritten under certain conditions, which is convenient.

  Further, the reception data storage means of the time integrating device according to claim 2 or 3 displays the received data when a display request is added to the reception data as described in claim 4. You may make it display on a means.

  In this case, the display request is added to the data and transmitted to the time integrating device, so that the data is displayed on the display means. For example, when data such as an error message is transmitted together with the display request, this is displayed on the display means. This is convenient because the user can be notified of the error.

  Then, in the time accumulating device according to any one of claims 1 to 4, the backup data storage means receives the acquisition command when the data acquisition command is input from the outside as described in claim 5. Is sent to the management apparatus via the first communication means, the data transmitted from the management apparatus is received in response to the data acquisition request, and the received data is stored in the first storage means. You may comprise so that it may store.

  This is convenient because data other than the backup data can be acquired from the management device and stored in the time integrating device according to the command input by the user.

  Further, in the time integrating device according to any one of claims 1 to 5, the first communication unit receives a data acquisition request transmitted from the management device as described in claim 6. Then, a first data extraction unit that extracts the requested data from the first storage unit and transmits it to the management device may be provided.

  In this way, when the first communication means receives a data request from the management device, the first data extraction means extracts the requested data and transmits it to the management device, so that the data stored in the time integrating device is stored. It can be obtained freely from outside and is convenient.

  And, in the time integration device according to any one of claims 1 to 6, as described in claim 7, when a data rewrite command stored in the first storage means is input from the outside, You may provide the 1st data rewriting means which rewrites the data memorize | stored in the 1st memory | storage means based on this rewriting instruction | indication.

  In this way, since the first data rewriting means rewrites the data stored in the first storage means in accordance with the rewrite command input by the user, it is convenient that various data can be rewritten freely from the outside.

Next, the invention described in claims 8 to 11 is suitable as a management device that transmits and receives data to and from the time integrating device described in any of claims 1 to 7.
The management device according to claim 8 includes second storage means for storing various data, and can communicate with the time accumulating device according to any one of claims 1 to 7 to transmit and receive data. When the second communication means receives the accumulated usage time transmitted from the time accumulating device, the operation determining means determines that the difference between the accumulated usage time and the backup data stored in the second storage means is the management device. It is determined whether or not the value is larger than a predetermined value. If the difference is small, it is determined that the time integrating device is operating normally. If the difference is large, the time integrating device is not operating normally. It is determined.

  The second storage means stores the accumulated use time received by the second communication means as backup data in the second storage means when the operation determining means determines that the time integrating device is operating normally. If it is determined that the time integrating device is not operating normally, the built-in timing means starts counting the usage time, calculates the cumulative usage time based on the measured usage time and backup data, and calculates the cumulative The usage time is stored in the second storage means as new backup data.

  That is, in such a management device, it is possible to determine whether or not the time integration device is operating normally. If it is determined that the time integration device is operating normally, the accumulation calculated by the time integration device is determined. Since the usage time is stored as backup data, even if the accumulated usage time stored in the time accumulating device is altered, it is possible to restore the correct data by the backup data. On the other hand, if it is determined that it is not operating normally, the usage time from the time point when it is determined that it is not operating normally is integrated based on the stored backup data, independent of the time integration device. Since the accumulated usage time is calculated, it is possible to calculate the accurate accumulated usage time even when the time accumulating device fails, and to manage the accumulated usage time.

  Then, the second storage means of the management device according to claim 8 is configured to store the time along with the backup data when the operation determining means determines that the time integrating device is not operating normally, as described in claim 9. Integration error data indicating that the integration device is not operating normally is stored in the second storage means, and a display request is further added to the integration error data and transmitted to the time integration device via the second communication means. You may comprise.

  In this way, since the accumulated error data is stored in the management device, it can be used to investigate the cause of the malfunction of the time integrating device, and the accumulated error data and the display request are transmitted to the time integrating device. Therefore, it is possible to notify the user that the operation of the time integrating device is not normal, which is convenient.

  Furthermore, when a rewrite command for data stored in the second storage means is input from the outside to the management device according to claim 8 or claim 9, the rewrite command is received. Based on this, a second data rewriting means for rewriting the data stored in the second storage means may be provided.

  In this way, since the second data rewriting means rewrites the data stored in the second storage means in response to an externally input command, the backup data and other data can be rewritten freely from the outside. Good.

  When the data acquisition command is input from the outside to the management device according to any one of claims 8 to 10, when the data acquisition command is input from the outside, the data acquisition by the acquisition command is acquired. Time integrating device data storage means for transmitting a request to the time integrating device via the second communication means, receiving data transmitted from the time integrating device in response to this data acquisition request, and storing the data in the second storage means May be provided.

  In this way, various data stored in the time integration device can be requested to the time integration device via the management device, and the requested data is stored in the second storage means of the management device. Various data stored in the time integrating device can be freely obtained, which is convenient.

  Further, in the management device according to any one of claims 8 to 11, as described in claim 12, when the second communication unit receives a data acquisition request transmitted from the time integrating device, You may provide the 2nd data extraction means which extracts the requested | required data from a 2nd memory | storage means, and transmits to a time integration device.

In this way, when a request for acquiring various data is transmitted from the time integration device to the management device, the requested data is transmitted, which is convenient.
In addition, the management device according to any one of claims 8 to 12 includes the time integration device according to any one of claims 1 to 7, as described in claim 13. Moreover, you may comprise so that it may be mounted and used for a vehicle.

  This is convenient because the time accumulating device and the management device can be easily connected with a cable or the like to transmit and receive data. In addition, when data is transmitted / received by wireless communication, since it is installed relatively close, data can be transmitted / received satisfactorily.

  And the vehicle of Claim 14 mounts the time integration device described in any one of Claims 1-7, and the management apparatus described in Claim 13, A time integration device and a management apparatus It is possible to realize the effect realized by both the devices.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram showing a schematic configuration of a control system of the forklift 1.
The forklift 1 according to the present embodiment includes a display control device 10 for displaying various data such as a traveling speed and a travel distance of the vehicle in front of the driver's seat, and various types of data to be displayed on the display control device 10. A controller 30 that generates and transmits the generated various data to the display control device 10 is provided.

  The display control device 10 has a function as a time accumulating device of the present invention, calculates the accumulated usage time of the vehicle by measuring and accumulating the time when the forklift 1 is turned on, and calculates the accumulated usage. The time is displayed and stored by the display control device 10, and the calculated accumulated usage time is transmitted to and stored in the controller 30 having the function as the management device of the present invention.

  As shown in FIG. 1, the display control device 10 includes a control unit 11 that controls the operation of the entire display control device 10, a memory 13 for storing data such as accumulated usage time, and a controller 30. A communication unit 15 for performing transmission / reception, an operation unit 17 for inputting various commands from the outside, a display panel 19 for displaying data such as accumulated usage time, and the like.

  The control unit 11 is composed of a microcomputer including a timer 11a (for example, a real-time clock that is a time counter or an internal timer), and a key switch 40 for detecting on / off of the vehicle is provided. It is connected.

  The memory 13 is capable of holding stored data even when power is not supplied (for example, EEPROM). The memory 13 stores the accumulated usage time calculated by the control unit 11. Various storage areas such as a storage area for storing error data indicating that when an error is detected and a storage area for storing data received by the communication unit 15 are provided.

The operation unit 17 is provided in front of the driver's seat and includes a plurality of operation buttons for inputting various requests and settings.
The display panel 19 is provided in front of the driver's seat, and displays various information such as travel speed, travel distance, engine vehicle fuel remaining amount, electric vehicle battery remaining amount, setting screen, etc. in addition to the vehicle's accumulated usage time. A liquid crystal display (LCD, etc.).

  When the key switch 40 is turned on, the control unit 11 of the display control device 10 configured in this way starts the time integration process shown in FIG. 2 and the external command process shown in FIG. 3, and the key switch 40 is turned off. Run repeatedly until

  When the user inputs a data rewrite command stored in the memory 13 via the operation unit 17 together with a password given to the user who is permitted to rewrite, the control unit 11 permits the input password. If it is permitted, the data stored in the memory 13 is rewritten based on the command (corresponding to the first data rewriting means in the present invention).

  Next, as shown in FIG. 1, the controller 30 transmits / receives various data to / from the control unit 31 that controls the operation of the entire controller 30, the memory 33 for storing various data, and the display control device 10. For example, a communication unit 35 for connecting to the personal computer, and an external I / F 37 for connecting a personal computer or the like.

  Similar to the control unit 11, the control unit 31 is configured by a microcomputer including a timer 31 a (for example, a real-time clock that is a time counter or an internal timer). Various sensors and switches such as a vehicle speed sensor 60 that detects the rotation of the driving wheel, a cargo handling switch 62 that is turned on / off in accordance with the operation of the lift lever or the tilt lever are connected.

  The memory 33 is capable of holding stored data even when power is not supplied (for example, an EEPROM). The memory 33 is a storage area for storing various data obtained by processing by the control unit 31. When an error is detected, there are provided various storage areas such as a storage area for storing error data indicating that, and a storage area for storing data received by the communication unit 35.

The external I / F 37 includes a connector for connecting to an external device 50 such as a personal computer.
When the key switch 40 is turned on, the control unit 31 of the controller 30 configured as described above executes the backup process illustrated in FIGS. 4 and 5.

  The control unit 31 acquires signals transmitted from various sensors and switches, and performs various processes in accordance with the acquired signals. In particular, the control unit 31 determines the travel distance by signals transmitted from the vehicle speed sensor and the cargo handling switch. Processing such as calculation, detection of travel start and end times, detection of start and end times of cargo handling work, calculation of cumulative travel time and cumulative cargo handling work time, etc. are executed, and data obtained by the executed processing is appropriately stored in the memory 33. Store.

  And when the communication part 35 receives the acquisition request of various data, such as the travel distance obtained by the said process, from the display control apparatus 10, the control part 31 extracts the requested | required data from the memory 33, It transmits to the display control apparatus 10 via the communication part 35 (equivalent to the 2nd data extraction means in this invention).

  On the other hand, when a personal computer is connected to the external I / F 37 as the external device 50, the control unit 31 operates in response to various commands input from the personal computer via the external I / F 37. For example, when the user inputs backup data from a personal computer and a password given to the user who is permitted to rewrite the backup data, the control unit 31 determines whether or not the input password is permitted. If it is permitted, the backup data stored in the memory 33 is rewritten (corresponding to the second data rewriting means in the present invention).

  When the user inputs various data acquisition commands from the personal computer, the control unit 31 transmits a requested data acquisition request to the display control device 10 via the communication unit 35 and at the same time, the display control device 10. Is transmitted to the memory 33 (corresponding to the time accumulator data storage means in the present invention). Further, when the user inputs a transmission command for various data from the personal computer, the control unit 31 extracts the requested data from the memory 33 based on the transmission command and sends it to the display control device 10 via the communication unit 35. Send.

  The display control device 10 configured as described above and the controller 30 are mounted on the forklift 1 in a state of being connected by a connection member such as a cable, and configured to be able to communicate with each other via a communication unit. ing.

  Below, the procedure of the time integration process which the control part 11 of the display control apparatus 10 performs is demonstrated using FIG. FIG. 2 is a flowchart showing the time integration process. This time integration process is a process that is started when the key switch 40 is turned on and the control unit 11 is activated, and is repeatedly executed until the key switch 40 is turned off.

  When the control unit 11 is activated, first, in S105, a storage error flag F11 that is set when it is determined that the accumulated use time cannot be stored in the memory 13 and an end flag F12 that indicates that the key switch 40 is turned off are displayed. Reset. In the following description, setting a flag indicates that the flag value is 1, and resetting the flag indicates that the flag value is 0. In S110, the timer 11a is started to start measuring the usage time. In S120, it is determined whether or not the key switch 40 is turned off. If the key switch 40 is off (S120: YES), the process proceeds to S125, the end flag F12 is set, and the process proceeds to S140.

  On the other hand, if the key switch 40 is not turned off, that is, if the key switch 40 is on (S120: NO), the process proceeds to S130, and whether or not the timer value exceeds a predetermined time. If the timer value does not exceed the predetermined time (S130: NO), the processes of S120 and S130 are repeated.

  If the timer value exceeds the predetermined time in S130 (S130: YES), the process proceeds to S140. In S140, the timer value is added to the accumulated usage time stored in the memory 13, and this value is updated. Accumulated usage time. In S150, the timer 11a started in S110 is reset and restarted. In S160, the count value n1 is set to 1 (n1 = 1).

  When the processing of S160 ends, it is determined in subsequent S170 whether the storage error flag F11 is set. Here, when the storage error flag F11 is not set, that is, when it is not determined that the accumulated use time cannot be stored (S170: NO), the process proceeds to S180, and the accumulated use time provided in the memory 13 It is determined whether or not the accumulated usage time can be stored in the area for storing. Whether or not the accumulated usage time can be stored is determined based on whether or not the number of writes to the memory 13 exceeds the guaranteed number of times, whether the accumulated usage time is abnormal as data, or an abnormality occurs in the memory 13. Depending on whether or not.

  If the accumulated use time can be stored (S180: YES), the process proceeds to S190 to store the accumulated use time, and the process proceeds to S200. On the other hand, if the accumulated usage time cannot be stored in S180 (S180: NO), the process proceeds to S230, 1 is added to the count value n1 (when n1 = 1, n1 = 2), and the process proceeds to S240. To do. Here, the count value n1 indicates the number of times it is determined whether or not the accumulated usage time can be stored in the memory 13.

  In S240, it is determined whether or not the count value n1 is equal to a value N1 that is predetermined as the number of times to determine whether or not the accumulated usage time can be stored before determining that the accumulated usage time cannot be stored. When it is not N1 (S240: NO), the process proceeds to S180, and the processes of S180, S230, and S240 are repeatedly executed until n1 = N1. On the other hand, if n1 = N1 in S240, that is, if the accumulated usage time N1 times cannot be stored (S240: YES), it is determined that the accumulated usage time cannot be stored, and the process proceeds to S250 to indicate a storage error. The message is displayed on the display panel 19, and in subsequent S260, the current time and the like are stored in the memory 13 as storage error data, and the process proceeds to S270. In S270, the storage error flag F11 is set.

  If the storage error flag F11 is set in S170, that is, if it is determined that the accumulated use time cannot be stored (S170: YES), it is determined whether the accumulated use time can be stored, The process proceeds to S200 without storing the accumulated usage time.

  In S200, it is determined whether or not communication with the controller 30 is possible. If communication is possible (S200: YES), the process proceeds to S210 and the accumulated usage time is transferred to the controller 30 via the communication unit 15. In S220, the accumulated usage time is displayed on the display panel 19, and the process proceeds to S225. Then, in S225, it is determined whether or not the end flag F12 is set. If the end flag F12 is set, that is, if the key switch 40 is turned off (S225: YES), this processing is performed. Exit. On the other hand, when the end flag F12 is not set (S225: NO), the process proceeds to S120 and the processes from S120 are repeatedly executed.

  On the other hand, if it is not possible to communicate with the controller 30 in S200 (S200: NO), the process proceeds to S280, a communication error message is displayed on the display panel 19, and the process proceeds to S220.

  Next, the procedure of external command processing executed by the control unit 11 of the display control apparatus 10 will be described with reference to FIG. FIG. 3 is a flowchart showing external command processing. This external command process is a process that is started when the key switch 40 is turned on and the control unit 11 is activated, as in the time integration process, and is repeatedly executed until the key switch 40 is turned off. It is executed in parallel with the processing.

  When the control unit 11 is activated, it is determined whether or not the key switch 40 is turned off in S405. If the key switch 40 is turned off (S405: YES), the process ends. On the other hand, if the key switch 40 is not turned off, that is, if the key switch 40 is on (S405: NO), the process proceeds to S410, and it is determined whether or not the operation unit 17 has been operated by the user. When the operation unit 17 is operated (S410: YES), an input screen for inputting various commands is displayed on the display panel 19, and in S420, the command input from the operation unit 17 is the data. It is determined whether or not it is an acquisition command, and if it is a data acquisition command (S420: YES), the process proceeds to S430, and the acquisition request for the received data is sent to the controller 30 via the communication unit 15. Send.

  On the other hand, if the operation unit 17 is not operated by the user in S410 (S410: NO), the process proceeds to S440. In S420, when the input from the operation unit 17 is not a data acquisition command (S420: NO), the process proceeds to S425, and various processes are performed according to the command input from the outside via the operation unit 17. When this processing is completed, the process proceeds to S440.

  The various processes include, for example, display of various data on the display panel 19, initial setting of the vehicle, etc., and display of data stored in the memory 13 on the display panel 19 via the operation unit 17. When a request is input, the control unit 11 extracts the requested data from the memory 13 and displays it on the display panel 19. On the other hand, when an initial setting input request is input, the control unit 11 performs the initial setting. A screen is displayed on the display panel 19, and information input based on the initial setting screen is stored in the memory 13.

  Then, in S440, it is determined whether or not the communication unit 15 has received data from the controller 30, and when data is received (S440: YES), the process proceeds to S450, and the received data is backup data. Determine whether or not. If the received data is backup data (S450: YES), the process proceeds to S460, and it is determined whether or not a password (identification information of the present invention) is added to the backup data. On the other hand, when data is not received in S440 (S440: NO), the process proceeds to S405, and the processes from S405 are repeatedly executed.

  If no password is added (S460: NO), the process proceeds to S470, and it is determined whether or not the received backup data is longer than the accumulated usage time stored in the memory 13. If the backup data is larger than the cumulative usage time (S470: YES), the process proceeds to S480, where the backup data is updated as the cumulative usage time. In the subsequent S490, the updated cumulative usage time is stored in the memory 13. Is stored in the storage area for storing the accumulated usage time data provided in step S405, and the process proceeds to step S405. In S470, when the backup data is smaller than the accumulated usage time (S470: NO), the process proceeds to S405 without updating the accumulated usage time.

  On the other hand, when a password is added in S460 (S460: YES), the process proceeds to S560, where it is determined whether or not the added password is a permitted password. (S560: YES), the process proceeds to S480, where the backup data is updated as the accumulated usage time, and stored in the memory 13 in S490. If the password is not permitted (S560: NO), the process proceeds to S405 without updating the accumulated usage time.

  In S450, if the received data is not backup data (S450: NO), the process proceeds to S500, and it is determined whether a display request is added to the received data. If a display request is added to the received data (S500: YES), the process proceeds to S510, the received data is displayed on the display panel 19, and the process proceeds to S405. On the other hand, when a display request is not added to the received data in S500 (S500: NO), the process proceeds to S520, and it is determined whether or not the received data is a data acquisition request.

  Here, if it is a data acquisition request (S520: YES), the process proceeds to S530 to extract the requested data from the memory 13, and in S540, the extracted data is transmitted via the communication unit 15. It transmits to the controller 30 and transfers to S405. On the other hand, when the received data is not a data acquisition request (S520: NO), the process proceeds to S550, and is stored as general data in a storage area for storing various data provided in the memory 13, and S405. Migrate to

  Next, the procedure of backup processing executed by the control unit 31 of the controller 30 will be described with reference to FIGS. 4 and 5 are flowcharts showing the backup processing. This backup process is a process that is started when the key switch 40 is turned on and the control unit 31 is activated, and is repeatedly executed until the key switch 40 is turned off. If the backup data cannot be stored, the process ends even when the key switch 40 is on.

  When the control unit 31 is activated, first, in S605, an end flag F22 indicating that the key switch 40 is turned off is reset, and in S610, it is determined whether or not the key switch 40 is turned off. Here, when the key switch 40 is turned off (S610: YES), the processing ends. On the other hand, if the key switch 40 is not turned off in S610, that is, if the key switch 40 is on (S610: NO), the process proceeds to S620.

  In S620, the communication unit 35 determines whether or not the cumulative use time is received from the display control apparatus 10, and when the cumulative use time is received (S620: YES), the process proceeds to S630, and the memory The backup data stored in 33 is extracted, the absolute value X of the difference between the received accumulated usage time and the extracted backup data is calculated, and the process proceeds to S640.

  In S640, it is determined whether or not the absolute value X of the difference is larger than a predetermined value. If X is smaller than the predetermined value, that is, transmitted from the previous display control device 10 and backed up. When the difference between the value stored as data and the value of the accumulated usage time transmitted this time is about the time difference between the times of transmission (S640: NO), the display control device 10 is normal. Since it is determined that the usage time has been integrated, the process proceeds to S650, where the value 1 is set as the count value n2 (n2 = 1) in S650.

  Next, in subsequent S660, it is determined whether or not the backup data can be stored in a storage area provided in the memory 33. If the backup data can be stored (S660: YES), the process proceeds to S670. In S670, the backup data is updated using the received accumulated usage time as backup data. In S680, the updated backup data is stored in the storage area provided in the memory 33, and the process proceeds to S610. Repeat the process.

  Further, when the accumulated usage time is not received in S620 (S620: NO), the process proceeds to S690, and the integration error indicating that the controller 30 determines that the display control device 10 is not operating normally. It is determined whether or not the flag F21 is set. If the integration error flag F21 is set (S690: YES), the process proceeds to A and the process from A shown in FIG. 5 is executed. On the other hand, when the integration error flag F21 is not set, that is, when the display control apparatus 10 is operating normally (S690: NO), the process proceeds to S610, and the processes of S610 to S690 are repeatedly executed.

  If the backup data cannot be stored in S660 (S660: NO), the process proceeds to S700, 1 is added to the count value n2 (when n2 = 1, n2 = 2), and the process proceeds to S710. . Here, the count value n2 indicates the number of times it is determined whether or not the backup data can be stored in the memory 33.

  Next, in S710, it is determined whether or not the count value n2 is equal to a value N2 that is predetermined as the number of times to determine whether or not the backup data can be stored before determining that the backup data cannot be stored. When it is not N2 (S710: NO), the process proceeds to S660, and the processes of S660, S700, and S710 are repeatedly executed until n2 = N2.

  On the other hand, if n2 = N2 in S710, that is, if the backup data could not be stored N2 times (S710: YES), it is determined that the backup data cannot be stored, and the process proceeds to S720 to indicate a storage error. In order to display the message on the display panel 19 of the display control device 10, the storage error message and the display request are transmitted to the display control device 10 via the communication unit 35. In subsequent S730, the current time and the like are stored in the memory 33 as storage error data, and the process is terminated.

  In S640, if the absolute value X of the difference between the received accumulated usage time and the extracted backup data is greater than a predetermined value, that is, the value of the accumulated usage time transmitted this time and the backup data transmitted last time. When the display control device 10 determines that the display control device 10 is not operating normally (S640: YES), the process proceeds to S740, where the timer 31a is started and the usage time is increased. Start timing. In subsequent S750, the accumulated use time and the current time received from the display control device 10 are stored in the memory 33 as integration error data, and the process proceeds to S760.

  Next, in subsequent S760, in order to display a message indicating that the integration is not correct on the display panel 19 of the display control device 10, an integration error message and a display request are displayed via the communication unit 35. In step S780, the integration error flag F21 is set, and the process proceeds to A to execute the processes from A shown in FIG.

  When the integration error flag F21 is set in S690 and when the integration error flag F21 is set in S780, that is, the display control device 10 has not normally integrated the usage time, and the display control device 10 This indicates that the accumulated usage time that has been transmitted is not stored as backup data. At this time, the controller 30 stores the backup data stored in the memory 33 in the processing of S785 to S880 described below. Based on this, the accumulated usage time is accumulated.

  First, in S785, it is determined whether or not the key switch 40 is turned off. If the key switch 40 is turned off (S785: YES), the flow proceeds to S790, and the end flag F22 is set. , The process proceeds to S800.

  On the other hand, when the key switch 40 is not turned off, that is, when the key switch 40 is on (S785: NO), the process proceeds to S795, and whether or not the timer value exceeds a predetermined time. If the timer value does not exceed the predetermined time (S795: NO), the determinations of S785 and S795 are repeated. If the timer value exceeds the predetermined time in S795 (S795: YES), the process proceeds to S800, and the value 1 is set as the count value n3 (n3 = 1) in S800.

  Next, in subsequent S810, it is determined whether or not the backup data can be stored in the storage area provided in the memory 33. If the backup data can be stored (S810: YES), the process proceeds to S820, and in S820. Then, the backup data stored in the memory 33 is extracted, a timer value is added to the extracted backup data, and this value is set as new backup data. In subsequent S830, the timer 31a is reset and restarted, and the process returns to S840. Transition.

  In S840, the new backup data is stored in the backup data storage area provided in the memory 33. In S850, it is determined whether or not the end flag F22 is set, and the end flag F22 is set. If the key switch 40 has been turned off (S850: YES), the processing is terminated. If the end flag F22 is not set in S850 (S850: NO), the process proceeds to S785, and the processes from S785 are repeatedly executed.

  On the other hand, when it is determined in S810 that the backup data cannot be stored (S810: NO), the process proceeds to S860, and 1 is added to the count value n3 (when n3 = 1, n3 = 2). The process proceeds to S870. Here, the count value n3 indicates the number of times it is determined whether or not the backup data can be stored in the memory 33.

  In S870, it is determined whether or not the count value n3 is equal to a value N3 set in advance as the number of times to determine whether or not the backup data can be stored before determining that the backup data cannot be stored. When it is not N3 (S870: NO), the process proceeds to S810, and the processes of S810, S860, and S870 are repeatedly executed until n3 = N3. On the other hand, if n3 = N3 in S870, that is, if the backup data could not be stored N3 times (S870: YES), it is determined that the backup data cannot be stored, and the process proceeds to S880 and stored as storage error data. The current time and the like are stored in the memory 33, and the process ends.

  The display control device 10 configured as described above is mounted on the forklift 1 and configured to be able to communicate with a controller 30 mounted on the same vehicle. Then, the display control device 10 adds up the vehicle usage time counted by the built-in timer 11a, calculates the cumulative usage time, periodically stores it in the memory 13, displays it on the display panel 19, and further displays the communication time. Since the cumulative usage time is periodically transmitted to the controller 30 via the unit 15 and this cumulative usage time is stored in the controller 30 as backup data, even if the display control device 10 fails and the data is erased, the controller The backup data is stored in 30, and it is possible to prevent the calculated accumulated usage time from being lost.

  When a backup data acquisition command is input via the operation unit 17, a backup data acquisition request is transmitted to the controller 30. When the backup data transmitted from the controller 30 is received, the received backup data is stored in the memory. It is determined whether or not the accumulated usage time is longer than the accumulated usage time. If the backup data is larger than the accumulated usage time, the backup data is stored in the memory 13 as the accumulated usage time.

  Therefore, the usage time can be accumulated again based on the stored cumulative usage time, and the accurate cumulative usage time of the vehicle is calculated and stored in the memory 13 even after the display control device 10 is repaired or replaced. At the same time, it can be displayed on the display panel 19, and it is possible to prevent unauthorized tampering that shortens the cumulative use time.

  And when the communication part 15 receives data from the controller 30, since the received data is stored in the memory 13, it can be used also as an apparatus for backing up various data. When the backup data and the password added to the backup data are received as data, it is determined whether or not the password is permitted. If the password is permitted, the backup data is stored as a cumulative usage time. Therefore, the user having the password can conveniently rewrite the accumulated use time through the controller 30 regardless of the value of the accumulated use time stored in the memory 13. Further, when the display request is received together with the data, the received data is displayed on the display panel 19, so that data such as an error message transmitted from the controller 30 together with the display request is displayed on the display panel 19, and the user generates an error. It is convenient because you can recognize that you are doing. In particular, when the controller 30 determines that the display control device 10 is not operating normally, an integration error message indicating that the display control device 10 is not normally integrating the usage time and a display request are displayed. Since it is transmitted from the controller 30, an integration error message is displayed on the display panel 19, and the user can recognize that a problem has occurred in the display control device 10.

  In addition, when a data acquisition command is input from the operation unit 17, the display control device 10 transmits a data acquisition request in which the acquisition command is input to the controller 30 via the communication unit 15. When the communication unit 35 receives the data acquisition request transmitted from the display control device 10, the communication unit 35 extracts the requested data from the memory 33 and transmits it to the display control device 10. Since the display control device 10 receives the data transmitted from the controller 30 and stores it in the memory 13, the user issues an acquisition command for various data such as the accumulated traveling time and the accumulated cargo handling work time from the operation unit 17. Data other than the backup data stored in the controller 30 can be acquired from the controller 30 and stored in the display control device 10 by inputting, and further, a data display command is input from the operation unit 17. This is convenient because the requested data can be displayed on the display panel 19. Furthermore, it is convenient because data stored in the memory 13 can be rewritten by inputting a password and a data rewrite command from the operation unit 17.

  Further, when the controller 30 receives the accumulated usage time transmitted from the display control device 10, it determines whether or not the difference between the accumulated usage time and the backup data stored in the memory 33 is larger than a predetermined value. When it is small, it is determined that the display control apparatus 10 is operating normally, and when it is large, it is determined that the display control apparatus 10 is not operating normally. If it is determined that the display control device 10 is operating normally, the accumulated usage time is stored in the memory 33 as backup data. If it is determined that the display control device 10 is not operating normally, the timer 31a uses the usage time. The accumulated use time is calculated based on the backup data stored in the memory 33 when it is determined that it is not operating normally, and stored in the memory 33 as backup data.

  For this reason, according to the controller 30 of the present embodiment, it is determined whether or not the display control device 10 is operating normally, and when it is determined that the display control device 10 is operating normally, the display control device 10 calculates. Since the accumulated use time is stored as backup data, even if the accumulated use time stored in the display control device 10 is falsified, it is possible to restore the accumulated use time with correct data using the backup data.

  On the other hand, when it is determined that the display control device 10 is not operating normally, the usage time from the time when it is determined that the display control device 10 is not operating normally is integrated based on the stored backup data. Independent of 10, the accumulated usage time is calculated and stored in the memory 33 as backup data. Therefore, even when the display control device 10 breaks down, the accurate accumulated usage time can be managed. When it is determined that the operation is not normally performed, the accumulated use time, the determined time, and the like are stored in the memory 33 as integration error data. Therefore, the display control device 10 is not operating normally. It is useful for investigating the cause.

  In addition, an external I / F 37 is provided so that the external device 50 can be connected, and data stored in the memory 33 can be rewritten by an operation from the external device 50, so that the value of backup data can be arbitrarily input. It is possible and convenient. When a data acquisition command is input from the external device 50 to the controller 30, the controller 30 transmits a data acquisition request to the display control device 10, and the display control device 10 extracts the requested data from the memory 13. Since the controller 30 stores the received data in the memory 33, the user can request and acquire data stored in the display control device 10 from the external device 50. It is.

  Since the display control device 10 and the controller 30 are mounted in the forklift 1, the display control device 10 and the controller 30 can be easily connected by a connecting member such as a cable, which is convenient.

  In the embodiment described above, the forklift 1 is the vehicle of the present invention, the timer 11a is the time measuring means of the present invention, the memory 13 is the first storage means of the present invention, the communication unit 15 is the first communication means of the present invention, and the display panel. Reference numeral 19 denotes display means of the present invention, timer 31a corresponds to timing means of the present invention, memory 33 corresponds to second storage means of the present invention, and communication unit 35 corresponds to second communication means of the present invention.

  The processes of S110 and S130 to S150 are the first integrating means in the present invention, the process of S190 is the accumulated time storing means in the present invention, the process of S210 is the accumulated time transmitting means in the present invention, and the process of S220 is the display in the present invention. The control means, the processes of S410 to S430, S470 to S490, and S550 are the backup data storage means in the present invention, the processes of S460, S500, S510, S550, and S560 are the received data storage means of the present invention, and the processes of S520 to S540 are the main processes. The processing of the first data extraction means, S620 to S640 in the invention corresponds to the operation determination means in the invention, and the processes of S660 to S680, S740 to S780, S795, S820 to S840 correspond to the second storage means in the invention.

As mentioned above, although one Embodiment of this invention was described, it cannot be overemphasized that this invention can take a various form.
For example, the forklift 1 of the present embodiment may be any power source as long as the display control device 10 and the controller 30 are activated when the key switch 40 is turned on, and may be an engine vehicle or an electric vehicle. In the present embodiment, the vehicle is the forklift 1, but it may be other industrial vehicles or general passenger vehicles.

  In the present embodiment, the cumulative use time is periodically transmitted from the display control device 10 to the controller 30, but may be configured to be transmitted only at the time of key-on or key-off.

  In the present embodiment, the controller 30 stores various data in the memory 33 when receiving a request for acquiring various data from the display control device 10 or when a user inputs a transmission command for various data from a personal computer. The data is extracted from the data and transmitted to the display control device 10. However, various data are stored in the memory 33 at regular intervals, at a predetermined time, or at a predetermined timing (such as when the key switch 40 is turned on / off). It may be configured to be extracted from and transmitted to the display control apparatus 10.

  In this embodiment, the controller 30 that generates information to be displayed on the display control device 10 is provided with a function as the management device of the present invention, and backup data of the accumulated usage time calculated by the display control device 10 is stored. However, it may be mounted on the same vehicle and connected with a cable or the like, or another device capable of communicating with the display control device 10 wirelessly may be provided with a function as a management device.

  Furthermore, the management device does not necessarily have to be mounted on the vehicle, and a dedicated management device is provided outside the vehicle, such as a control room, or functions as a management device in an existing device such as a management server for the forklift 1. May be provided. Then, data can be transmitted and received between these devices and the display control device 10 by wireless communication or the like, backup data of accumulated usage time is stored in these devices, and the operation of the display control device 10 is determined. You may do it. This is convenient because a plurality of display control devices 10 can be simultaneously managed in the control room.

  Further, in the present embodiment, the accumulated use time is calculated based on the time when the key switch 40 is turned on in the display control device 10, and the accumulated travel time obtained by adding the travel time and the cargo handling work time are accumulated in the controller 30. The accumulated loading / unloading work time and the like are calculated, but the calculation of these times is configured to be performed by the display control device 10, and backup data of these times is stored in the controller 30 or another device as described above. You may make it memorize | store in a server etc.

  In the present embodiment, external input to the display control device 10 is performed from the operation unit 17 that is a button provided on the front surface of the driver's seat. / F may be provided, a personal computer or a dedicated device for maintenance may be connected, and various commands may be input via these devices, and various commands may be input via wireless communication. It may be configured. On the other hand, the controller 30 may be provided with an operation unit so that various commands can be directly input.

2 is a block diagram illustrating a schematic configuration of a control system of the forklift 1. FIG. 4 is a flowchart showing a time integration process of the display control device 10. 4 is a flowchart showing external command processing of the display control device 10. 3 is a flowchart showing backup processing of a controller 30. 3 is a flowchart showing backup processing of a controller 30.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Forklift, 10 ... Display control apparatus, 11 ... Control part, 13 ... Memory, 15 ... Communication part, 17 ... Operation part, 19 ... Display panel, 30 ... Controller, 31 ... Control part, 33 ... Memory, 35 ... Communication 37: External I / F, 40: Key switch, 50 ... External device, 60 ... Vehicle speed sensor, 62 ... Cargo handling switch

Claims (14)

A first integrating means mounted on an industrial vehicle, integrating the usage time of the vehicle timed by a built-in timing means, and calculating the accumulated usage time;
Accumulated time storage means for storing the accumulated use time calculated by the first accumulation means in the first storage means;
Display control means for causing the display means to display the accumulated usage time stored in the first storage means by the accumulated time storage means;
A time integrating device comprising:
First communication means for communicating with an external management device;
Accumulated time transmitting means for storing the accumulated usage time as backup data in the management device by transmitting the accumulated usage time to the management device via the first communication unit;
When the backup data acquisition command is input from the outside, the backup data acquisition request is transmitted to the management device via the first communication unit, and after the transmission, the first communication unit transmits from the management device. When the received backup data is received, it is determined whether or not the received backup data is longer than the accumulated use time stored in the first storage means, and when the backup data is greater than the accumulated use time. Backup data storage means for storing the backup data in the first storage means as the accumulated usage time;
A time integrating device characterized by comprising:   2. The time according to claim 1, further comprising reception data storage means for storing the received data in the first storage means when the first communication means receives data transmitted from the management device. Accumulator.   When the received data is data obtained by adding identification information to backup data stored in the management device, the received data storage means determines whether the identification information is a genuine one registered in advance. 3. The time accumulating apparatus according to claim 2, wherein when the identification information is authentic, the backup data is stored in the first storage means as the accumulated usage time.   4. The time integration apparatus according to claim 2, wherein the reception data storage means displays the reception data on the display means when a display request is added to the reception data. .   When a data acquisition command is input from the outside, the backup data storage unit transmits a data acquisition request to which the acquisition command is input to the management device via the first communication unit, and 5. The time integration device according to claim 1, wherein the time accumulation device receives data transmitted from the management device in response to an acquisition request, and stores the received data in the first storage means. .   When the first communication unit receives a data acquisition request transmitted from the management device, the first communication unit includes first data extraction unit that extracts the requested data from the first storage unit and transmits the data to the management device. The time integration device according to any one of claims 1 to 5, wherein   The first data rewriting means for rewriting the data based on the rewrite command when a data rewrite command stored in the first storage means is input from the outside. The time integration device according to any one of 6. A management device comprising second storage means for storing various data, capable of communicating with the time accumulating device according to any one of claims 1 to 7 and capable of transmitting and receiving data,
Second communication means for communicating with the time integrating device;
When the second communication means receives the accumulated usage time transmitted from the time integrating device, the difference between the accumulated usage time and the backup data stored in the second storage means is greater than a predetermined value. And determining whether or not the time integrating device is operating normally when the difference is small, and determining that the time integrating device is not operating normally when the difference is large Means,
When the operation determining means determines that the time integrating device is operating normally, the accumulated use time received by the second communication means is stored as backup data in the second storage means, and the operation determination If it is determined by the means that the time accumulating device is not operating normally, the built-in timing means starts measuring the usage time, and the measured usage time and the backup stored in the second storage means A second storage means for calculating an accumulated usage time based on the data and storing the calculated accumulated usage time as new backup data in the second storage means;
A management apparatus comprising:   The second storage means, when the operation determining means determines that the time integrating device is not operating normally, integration error data indicating that the time integrating device is not operating normally together with the backup data. 9. The management according to claim 8, further comprising: adding the display request to the integration error data and transmitting the display request to the time integration device via the second communication unit. apparatus.   9. The apparatus according to claim 8, further comprising second data rewriting means for rewriting the data based on the rewriting command when a data rewriting command stored in the second storage means is input from the outside. 9. The management device according to 9.   When a data acquisition command is input from the outside, a data acquisition request to which the acquisition command is input is transmitted to the time integrating device via the second communication means, and the data acquisition request is received and 11. The management device according to claim 8, further comprising a time integration device data storage unit that receives data transmitted from the time integration device and stores the data in the second storage unit.   When the second communication means receives the data acquisition request transmitted from the time integration device, the second communication means extracts the requested data from the second storage means and transmits the data to the time integration device. The management apparatus according to claim 8, comprising the management apparatus.   The management apparatus according to any one of claims 8 to 12, wherein the management apparatus is mounted on a vehicle and used together with the time accumulating apparatus according to any one of claims 1 to 7. .   A vehicle comprising the time integrating device according to any one of claims 1 to 7 and the management device according to claim 13.

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