JP2002187698A - Management device for working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a management device for a working vehicle capable of detailed management of the operating history of a working vehicle while the constitution remains simple. SOLUTION: The management device 10 includes a dedicated memory 13 in which the operating history of specific motions is sequentially accommodated, which allows providing instantly the motion amounts of a fork lift 1 in the specific period by means of entry from a screen select switch 15 or any external apparatus 20. This allows the person in management to acquire these motion amounts as the history information, when necessary, and allows him to design working processes having higher efficiency. The operator can review the working method by himself and build up any measure to heighten the working efficiency of himself.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a forklift,
The present invention relates to a work vehicle management device that manages the operation history of a work vehicle such as an excavator, a crane, or an agricultural machine.

[0002]

2. Description of the Related Art
For example, the management of work efficiency by a work vehicle such as a forklift is performed by calculating the work efficiency from the relationship between the work time ascertained by application of a worker or stamping of a time card and the cargo handling amount in this work time. Was common.

However, in practice, the work efficiency varies depending on the driving skill of the work vehicle and how the work time is used by the worker, so that even in a day's work, high work time and low work time are mixed. . Therefore, in order to accurately grasp the work efficiency of the work vehicle that changes every moment, it is necessary to precisely manage the history of the work vehicle, such as the travel time and the cargo handling time.

In this case, in order to perform such management under the present circumstances, it is necessary to separately mount special devices such as a sensor and an arithmetic device for measuring these on the work vehicle. Such devices are expensive and difficult to achieve. Such a problem occurs not only with a forklift but also with other work vehicles such as shovel cars, cranes, and agricultural machines.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a work vehicle management device capable of managing the operation history of a work vehicle in detail with a simple configuration.

[0006]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, in a work vehicle management device according to claim 1 of the present application (hereinafter, simply referred to as a "management device"), a detecting means in a work vehicle is provided by a work vehicle. The operation state of the specific operation is detected, and the storage unit stores the history of the operation state detected by the detection unit in association with the time counted by the clock unit. Then, the calculation means calculates the operation amount of the specific operation in a specific period based on the history stored in the storage means. The output means outputs a calculation result of the calculation means in accordance with an external input.

[0007] The "operating state of the specific operation" referred to here is a running state of the work vehicle, a work state of a specific work (for example, a cargo work in a forklift), or charging of the battery when the vehicle is equipped with a battery. Various things such as a state can be considered, and what is set as the “specific operation” is appropriately determined by an administrator or the like.

According to the management device, since the operation history of the specific operation is stored in the storage unit in association with the time, the operation unit partially refers to the operation history as needed, so that the operation unit can perform the operation for an arbitrary period. Can be calculated. Therefore, it is possible to immediately provide an operation amount in a specific period according to an external input (request). As a result, the administrator can obtain the operation amounts of these specific operations as history information as needed, and can design a more efficient work process. In addition, the worker himself / herself can review the work method, and can take measures to improve his / her work efficiency.

Further, in the above configuration, since each of the above means is provided in the work vehicle, it is not necessary to separately install an expensive device in the work vehicle. As a specific configuration, for example, when the work vehicle is equipped with an electronic control device or the like in advance,
Each of the above means can be configured as one function of the control device.

That is, when the work vehicle is a so-called electric vehicle provided with an electronic control device for integrally controlling the traveling, work, and the like, one of the functions of the electronic control device is to store various operation histories of the work vehicle. Existing ROM for managing programs
The above configuration can be realized only by adding to the above.
For this reason, the introduction of the present management apparatus does not particularly involve addition of hardware and does not particularly occupy the vehicle space, so that it can be realized with a simple configuration and at low cost.

On the other hand, even when the work vehicle is a so-called engine vehicle not provided with such an electronic control unit, a display for generally notifying the driver of the vehicle state quantity such as the current vehicle speed and the work state quantity is generally used. Equipment is installed. Therefore, it is also effective to configure each of the above means as one function of the display device. In this case, since the output means displays the calculation result on the display unit in accordance with the input from the predetermined input means of the display device, the operator can easily confirm his / her work history.

[0012] Even when the working vehicle is the electric vehicle described above, it is possible to configure each of the above means as one function of the display device. However, in this case, since almost all of the operation information of the work vehicle is temporarily input to the control device that integrally controls the work vehicle, information necessary for the arithmetic processing among the information held by the control device is included. Needs to be loaded into the display device.

Therefore, as set forth in claim 3, the detection means obtains, from the control device, information necessary for the calculation by the calculation means among the operation information of the work vehicle detected by the control device. It is good to constitute. In the case where the work vehicle is equipped with a battery and a charge control device for controlling the state of charge is provided, management of the history of the state of charge is performed to reduce power consumption. Can also.

Therefore, in such a case, the detecting means may detect the state of charge of the battery by the charge control device. The arithmetic means may be configured such that the arithmetic means calculates an operation amount in accordance with an external input (request) each time, and the output means outputs the operation amount. However, the operation target to be calculated is determined in advance. In this case, the operation amount may be calculated in a predetermined period unit, and the output unit may output the input when there is an external input. That is, the load on each of the above-described units can be reduced by limiting the operation amount information to a period of one day or half a day, for example, and performing the arithmetic processing and storing the arithmetic processing.

The operation amount output by the output means may be directly displayed on the display unit of the display device. However, if the operation amount is output to an external device such as a personal computer, it is convenient for the administrator to manage the operation amount. And is preferred. Therefore, a management device according to claim 6, further comprising a communication unit capable of communicating with an external device, wherein the output unit responds to a request from the external device through the operation amount or the operation history via the communication unit. Is output to an external device.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. [First Embodiment] In this embodiment, a management device of the present invention is applied to a forklift. FIG. 1 is an explanatory view of a forklift to which the management device is applied, and FIG. 2 is an electrical configuration of the management device. FIG.

The forklift 1 shown in FIG. 1A is configured as a so-called engine car, and an operation of an accelerator by an operator or an operation of a lever for cargo handling is directly transmitted to each drive unit. I have. A display for displaying the current traveling speed, traveling distance, oil temperature, water temperature, remaining fuel amount, and the like of the forklift 1 is provided in an instrument panel 2 provided in front thereof, as shown in FIG. The device 3 is installed. The management device 10 according to the present embodiment is configured as a part of the function of the display device 3.

The management device 10 (that is, the display device 3) includes a control unit 1 as shown in FIG.
1 is the center. Although not shown, the control unit 11 includes a CPU for controlling various devices, a ROM in which various numerical values and programs are written in advance, a RAM in which numerical values and flags in the calculation process are written in a predetermined area, and each of these devices. It consists of connected bus lines.
Then, the processing shown in the flowchart described later
This is executed based on a control program written in the OM in advance.

The control unit 11 has a real-time clock (hereinafter referred to as "RTC") for outputting the current time.
12, a dedicated memory 13 for storing the operation history of the forklift 1, a display unit 14 for displaying the operation state of the forklift 1, etc., and a screen selection switch 15 (including a switch group for externally selecting a screen to be displayed on the display unit 14). Input means) and a communication circuit 16 for performing predetermined communication with an external device 20 such as a personal computer are connected. Here, the dedicated memory 13 is composed of a nonvolatile storage element such as an EEPROM, and has a function as a so-called ring buffer having a fixed storage capacity. Therefore, when the storage capacity is full, new data is sequentially overwritten on the oldest data.

The control unit 11 has a key switch (key S) which is turned on when the forklift 1 is started.
W), an accelerator switch (accelerator SW) that is turned on when the accelerator is depressed, or a cargo switch (cargo SW) that is turned on when starting the cargo handling operation.
A signal indicating OFF, a signal indicating a running pulse output while the forklift 1 is running, and the like are input via an input / output interface (I / O) 17.

When the control unit 11 detects that these signals have been input, it refers to the time output by the RTC 12 and calculates various specific operations of the forklift 1 which will be described later, in association with time, and stores them in a dedicated memory. 13 is stored.
Then, when the screen selection switch 15 is turned on and a request for screen display relating to the specific operation is input, the control unit 11
The corresponding information stored in the dedicated memory 13 is read and output to the display unit 14 via the driver 18. The management device 10 and the external device 20 are configured to be connectable via a predetermined communication cable.
Can communicate with each other via a communication circuit 16 adapted to a communication protocol such as. For this reason, when a request for transmission of specific information is made from the external device 20 for work management or the like, the control unit 11 reads the corresponding information stored in the dedicated memory 13 and transmits it to the external device via the communication circuit 16. Transmit to the device 20.

FIG. 3 shows a specific example of information relating to a specific operation managed by the management device 10. FIG. 3 shows the travel distance (K) as the operation amount of the specific operation of the forklift 1.
m), travel time (h), cargo handling time (h), etc. are managed on a daily or half-day basis, and these information are stored in a dedicated memory 13 and displayed on a display unit in response to an external request. 14 or an external device 20.

That is, the control unit 11 calculates the running time and the running distance by counting the number of running pulses input from the I / O 17 while referring to the current time output from the RTC 12. In addition, the cargo handling time is calculated by detecting the time when the cargo handling switch is turned on and the time when the cargo handling switch is turned off. Then, these operation times and the like are sequentially accumulated each time the operation is completed, and stored in the dedicated memory 13. Therefore, when a half-day work is completed, the entire operation time for the half day (that is, the work time for the half day) is stored in the dedicated memory 13, and when the work is completed for one day, the day is completed. Is stored (that is, the working time of the day). When the output of the RTC 12 detects that the next day has come, the data of the next day is recorded in the same manner.

When the item "Today's operation amount (daily unit)" is selected by the screen selection switch 15, the screen shown in FIG. When the item of “amount (half day unit)” is selected, the screen shown in FIG. When such information is requested by an input from the external device 20, similar information is output to the external device 20 and displayed on the screen.

Next, the management process of the specific operation of the forklift 1 performed by the control unit 11 will be described with reference to the flowcharts shown in FIGS. First, a general process executed by the control unit 11 will be described with reference to FIG. First, when a signal indicating that the key SW is turned on is detected (S110: YES), the management data stored in the dedicated memory 13 up to the previous time is read into the RAM (S120), and the detection is performed by referring to the RTC 12. The time is stored as the start time of the forklift 1 (S13)
0).

Subsequently, it is determined whether a signal indicating that the accelerator SW has been turned on is detected (S14).
0), when it is determined that the signal has been detected (S14).
0: YES), the detection time is stored as the start time of the worker's acceleration request with reference to the RTC 12 (S15).
0). On the other hand, if it is determined in S140 that a signal indicating that the accelerator SW has been turned on has not been detected (S14).
0: NO), and proceeds to S160.

Subsequently, it is determined whether or not a signal indicating that the cargo handling SW has been turned on is detected (S160). If it is determined that the signal has been detected (S160: YE)
S), the detected time is stored as the start time of the cargo handling work with reference to the RTC 12 (S170). On the other hand, S160
If it is determined that the signal indicating that the cargo handling SW is turned on is not detected (S160: NO), the process proceeds to S180.

Subsequently, it is determined whether or not the input of the traveling pulse has been detected (S180). If it is determined that the traveling pulse has been detected (S180: YES), the RTC 12 is detected.
, The detection time is stored as the traveling start time, and the counting of the traveling pulse is started (S19).
0). On the other hand, if it is determined in S180 that the running pulse has not been detected (S180: NO), S200
Move to

Then, it is determined whether or not a signal indicating that the accelerator SW has been switched off is detected (S20).
0). At this time, when it is determined that the signal is detected (S200: YES), the detection time is stored as the end time of the worker's acceleration request with reference to the RTC 12 (S200).
210). On the other hand, when it is determined in S200 that the signal indicating that the accelerator SW has been turned off has not been detected (S200: NO), the process proceeds to S220.

The detection process is a process on the premise that the accelerator SW has been switched on in S140, and detects an operation of switching the accelerator SW from on to off. Therefore, if the accelerator SW is not switched on and remains off in S140, S
At 200, it is not determined that a signal indicating that the accelerator SW has been switched off has been detected.

Subsequently, it is determined whether or not a signal indicating that the cargo handling SW has been switched off has been detected (S220).
At this time, if it is determined that the signal is detected (S22
0: YES), the detected time is stored as the end time of the cargo handling work with reference to the RTC 12 (S230). on the other hand,
If it is determined in S220 that a signal indicating that the cargo handling SW has been turned off has not been detected (S220: N
O), and proceed to S240.

Note that this detection processing is also performed at S160 by the cargo handling S
This is a process based on the assumption that W has been switched on, and detects a switching operation of the cargo handling switch from on to off. Therefore, when the cargo handling SW is not switched on and remains off in S160, it is not determined that a signal indicating that the cargo handling SW has been switched off is detected in S220.

Subsequently, it is determined whether or not a traveling pulse has not been input for a predetermined time or more (that is, the forklift 1 has been stopped for a predetermined time or more) (S240). At this time, if it is determined that the traveling pulse has not been input for a certain period of time or more (S240: YES), the traveling pulse counting process is temporarily terminated, and the time at that time is stored as the traveling end time by referring to the RTC 12 (S250). ). On the other hand, S
If it is determined in 240 that a traveling pulse has been input (S240: NO), the process proceeds to S260.

This detection process is also a process on the assumption that the start of the input of the running pulse is detected in S180. Therefore, if the traveling pulse is not detected in S180 and the forklift 1 is still stopped, S2
The decision at 40 is not made. Then, it is determined whether a signal indicating that the key SW is turned off is detected (S26).
0), when it is determined that the signal is detected (S26)
0: YES), the detected time is stored as the work end time by the forklift 1 with reference to the RTC 12 (S).
270). Then, the on-time and off-time of the key SW stored in the RAM so far, the on-time and off-time of the accelerator SW, the on-time and off-time of the cargo handling SW, the count start time and the count end time of the traveling pulse, And the ON time of the key SW, the ON time of the accelerator SW, the ON time of the cargo handling SW,
The travel time, the travel distance, and the like are calculated and stored in the dedicated memory 13 (S280).

In the calculation processing of S280, the integrated value of each operation amount up to that time is calculated, but if half a day or one day has passed at that time, it is based on the past history. To calculate the amount of movement in units of half a day or one day. As a result, the operation amount shown in FIG. 3 can be displayed. However, for the sake of work management, the operation amount may be integrated in a further subdivided time unit, and the information may be sequentially stored in the dedicated memory 13. That is, the time unit in which the operation amount is managed is appropriately set according to the convenience of the administrator.

On the other hand, if no signal indicating that the key SW is turned off is detected in S260 (S260: NO),
The processing of S140 to S250 is repeated. In this case as well, in S140 and S160, the switching operation of each switch from OFF to ON is detected, and in S180,
It is assumed that the input of the running pulse again is detected.

Next, the interrupt processing executed by the control unit 11 will be described with reference to FIG. This interrupt processing is performed during or before or after the above-described general processing is executed.
This is executed when there is an interrupt input requesting management data from the screen selection switch 15 or the external device 20.

First, in parallel with the above-described general processing, the control unit 11 sequentially monitors the input of an interrupt signal indicating a request for management data (S310). Then, when the signal is detected (S310: YES), if each of the above-described specific operations in the general processing is being continued, the process goes to S2 in FIG.
The processing corresponding to step S80 is performed, and the operation amounts of various specific operations at the present time are calculated and stored in the dedicated memory 13 (S32).
0).

Then, it is determined whether the display request is a display request to the display device 3 (display unit 14) based on the input from the screen selection switch 15 (S330), and if the display request is determined (S330). : YES), the data relating to the request is extracted from the dedicated memory 13 and output to the display unit 14 to be displayed. In other words, at this time, when the display of the operation amount of the specific operation on a daily or half-day basis is requested, the above-described screen shown in FIG. On the other hand, if the request is not a display request (S330: N
O), proceed to S350.

Subsequently, it is determined whether a transmission request has been made by an input from the external device 20 (S350). If it is determined that a transmission request has been made (S350: Y)
ES), the corresponding data relating to the request in the dedicated memory 13 is transmitted to the external device 20 (S360). In other words, at this time, when the data of the operation amount of the specific operation on a daily or half-day basis is requested, for example, the screen shown in FIG. 3 described above is displayed on the display of the external device 20. On the other hand, if the request is not a transmission request (S350: NO), the process ends.

The screen selection switch 15 or the external device 2
When there is a request to display the vehicle speed of the forklift 1 due to an input from 0, an interrupt process of the vehicle speed calculation is executed in the above process. That is, in this case, similarly to the conventional processing, the control unit 11 calculates the vehicle speed based on the time output from the RTC 12 and the number of running pulses counted, and outputs the calculation result to the display unit 14 or the external device 20. I do.

As described above, in the management device 10 of the present embodiment, since the operation history (operation amount) of the specific operation by the forklift 1 is sequentially stored in the dedicated memory 13, the operation history from the screen selection switch 15 or the external device 20 is output. By the input, the operation amount of the forklift 1 in the specific period can be immediately provided. As a result, the administrator can obtain these operation amounts as history information as needed, and can design a more efficient work process. In addition, the worker himself / herself can review the work method, and can take measures to improve his / her work efficiency.

As described above, the management device 10 is configured as one function of the display device 3 of the forklift 1. That is, the function as the management device 10 is realized only by adding the execution program to the existing program executed by the display device 3.
For this reason, the introduction of the management apparatus 10 does not particularly involve any additional hardware. As a result, the vehicle space is not particularly occupied by the introduction of the management device 10, and its function is realized at a low cost with a simple configuration.

In the above embodiment, the control unit 11 corresponds to the detecting means, the calculating means and the output means, and the RTC 12
Is a RAM of the control unit 11 and a dedicated memory 13
Corresponds to the storage means, and the communication circuit 16 corresponds to the communication means. [Second Embodiment] In the first embodiment, an example is shown in which the management device of the present invention is applied to a forklift configured as an engine vehicle, but in the present embodiment, the management device of the present invention is configured as an electric vehicle. An example applied to a forklift is shown. The configuration of the management device 210 according to the present embodiment is substantially the same as that of the management device 10 according to the first embodiment. Therefore, the same components are denoted by the same reference numerals and description thereof will be omitted.

FIG. 6 is a block diagram showing the electrical configuration of the management device 210. As shown in FIG. 6, a vehicle control device 30 for integrally controlling the forklift 1 is connected to the management device 210. The vehicle control device 30 includes a CPU for controlling various driving devices for driving the forklift 1, a ROM in which various numerical values and programs are written in advance, and an RA in which numerical values and flags in the calculation process are written in a predetermined area.
M, and bus lines to which each of these devices is connected.

That is, the forklift 1 of this embodiment
In the case of the engine vehicle shown in the first embodiment, the accelerator operation by the operator and the lever operation for the cargo handling work are not directly transmitted to the respective drive units, but represent the operation amounts of these. The signal and the signal indicating the state quantity of the vehicle output from various sensors installed in the vehicle are temporarily input to the vehicle control device 30. Then, the vehicle control device 3
Optimal control conditions for controlling the vehicle operation within 0 are calculated, and drive signals based on the calculation results are output to various drive devices.

For this reason, in the first embodiment, the signals indicating ON / OFF of the key SW, the accelerator SW, and the cargo handling SW, which are directly input to the management device 10, the running pulse, and the like are input to the vehicle control device 30. . Therefore, the management device 210
Requests the vehicle control device 30 for input information such as these signals when the key SW is input, and the vehicle control device 30 sequentially outputs the input information such as these signals to the management device 210.

The processing for various signals input to the management apparatus 210 in this manner is the same as the processing in FIGS. 4 and 5 shown in the first embodiment, and therefore, the description thereof is omitted. I do. In the present embodiment, FIG.
As shown in (1), a charging unit 40 is further connected to the management device 10, and it is possible to manage the charging time of a battery mounted on the forklift 1 and charging modes such as automatic charging and rapid charging. .

More specifically, the control unit 11 manages the charging start / end signal and the signal indicating the charging mode input from the charging unit 40 while referring to the time output by the RTC 12. Therefore, when the display of the charging status is selected by inputting the screen selection switch 15, the charging time, the number of times of charging (the number of times of rapid charging, the number of times of automatic charging), and the like are displayed on the screen shown in FIG.

Since this management mode is the same as the operation of calculating the ON / OFF time of the accelerator SW shown in the first embodiment (see FIGS. 4 and 5), the description thereof is omitted. . As described above, according to the management device 210 of the present embodiment, even when the forklift 1 is a so-called electric vehicle, the specific operation of the forklift 1 can be managed, and the same effects as those of the first embodiment can be obtained. Can be

Although the embodiments of the present invention have been described above, the embodiments of the present invention are not limited to the above-described embodiments, and may take various forms within the technical scope of the present invention. Needless to say. For example, in the above embodiment, a forklift was taken as an example of the working vehicle,
The management device according to the present invention is also applicable to other work vehicles such as shovel cars, cranes, and agricultural machines.

In connection with this, in the above-described embodiment, examples of the operation amount of the specific operation, such as the travel distance, the travel time, the cargo handling time, the state of charge, and the like, are shown. Or the amount of operation can be set. Furthermore, in the above-described embodiment, an example is shown in which the management device 10 and the external device 20 are communicably connected by a communication cable. However, wireless communication modules are installed on the management device 10 side and the external device 20 side, respectively. Alternatively, data may be transmitted by wireless communication.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a forklift to which a management device of the present invention is applied.

FIG. 2 is a block diagram illustrating an electrical configuration of a management device according to the first embodiment.

FIG. 3 is an explanatory diagram illustrating a management mode of the management device according to the first embodiment.

FIG. 4 is a flowchart illustrating a management process performed by the management device according to the first embodiment.

FIG. 5 is a flowchart illustrating a management process performed by the management device according to the first embodiment.

FIG. 6 is a block diagram illustrating an electrical configuration of a management device according to a second embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Forklift, 3 ... Display device, 10 and 210 ... Management device, 11 ... Control part, 13 ... Dedicated memory, 14 ... Display part, 15
... Screen selection switch 16 Communication circuit 20
... External equipment, 30 ... Vehicle control device, 40
..Charging units

Claims (6)

[Claims] 1. A work vehicle management device for managing a history of at least one specific operation performed by a work vehicle in the work vehicle, comprising: a detection unit configured to detect an operation state of the specific operation; A timer for measuring the time, a storage for storing a history of the operation state of the specific operation detected by the detector in association with the time measured by the timer, and based on the history stored in the storage. A working means for calculating an operation amount of the specific operation during a specific period; and an output means for outputting a calculation result of the calculating means in accordance with an external input. . 2. The apparatus according to claim 1, wherein each of the means is configured as a function of a display device installed on the work vehicle for displaying a predetermined state quantity of the work vehicle. 2. The work vehicle management device according to claim 1, wherein the calculation result is displayed on a display unit of the display device in accordance with an input from the input unit. 3. When the work vehicle is provided with a control device that controls the work vehicle in an integrated manner, the detection means includes: 3. The information required for calculation by the calculation means is obtained from the control device.
The work vehicle management device according to claim 1. 4. When the work vehicle is provided with a charge control device for controlling charging of a battery mounted on the work vehicle, the detection means may charge the battery by the charge control device. The management device for a work vehicle according to any one of claims 1 to 3, wherein the state is detected. 5. The apparatus according to claim 1, wherein said calculating means calculates said operation amount in a predetermined period unit.
5. The management device for a work vehicle according to any one of 4. 6. The work vehicle management device according to claim 1, further comprising a communication unit capable of communicating with an external device, wherein the output unit is configured to perform the communication in response to a request from the external device. A management device for a work vehicle, wherein the operation amount or the history information of the operation is output to the external device via means.