JPH10316395A - Fork-lift operation controlling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple man-machine interface which can modify pulse rate with an interactive mode on a display, in compensating disunity of a standard for installed tire size at factory shipment among fork-lift makers, difference of installed tire size at factory shipment for each loading weight system, or traveling distance difference due to changing of an installed tire after its shipment. SOLUTION: The operation controlling device 10 is constituted so as to measure operation condition of a fork-lift, form operation control data 12a on its operation log, and record the operation control data 12a. In this case, a pulse rate setting means 18 which can optionally change and set pulse rate data 18a on convergence rate for converting rotational condition of an axle of the fork-lift to vehicle speed is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation recorder for a vehicle, and more particularly to a forklift operation management device which measures the operation status of a forklift, generates data relating to the operation record, and records the data.

[0002]

2. Description of the Related Art Conventionally, in this type of forklift operation management device, vehicle speed is measured in order to measure the operation status of a forklift. The vehicle speed of the forklift is determined by the number of output pulses (unit: [pulses / second (hereinafter, referred to as "pulses / second") generated by a rotation sensor provided on the axle of the forklift according to the rotation state of the axle (that is, the number of rotations per unit time).
[P / s]) is calculated based on the product of the rotation state of the axle and the tire size of the forklift, which is measured by counting the number of times.

[0003] The tire size of a forklift is based on a loading weight system (for example, 1 ton (ton is 100 in weight unit).
0 kg), 2 tons, etc.), for example, and the tire size tends to increase as the load weight increases. Similarly, forklift tire sizes, even for the same loading weight system, because forklift manufacturers do not standardize size standards, each manufacturer has its own tires with different outer diameters installed at the factory. Many cases are seen.

That is, even with the same rotation of the axle (= the same number of output pulses of the rotation sensor), the distance traveled by the forklift varies depending on the mounted tire. For example, as a tire having a larger tire size is mounted, the vehicle travels a longer distance with one rotation of the axle (the same number of output pulses).

In order to compensate for the difference in running distance caused by the size of the mounted tire for each loading weight system, a pulse converter module having a pulse rate for compensating the running distance is provided at the factory in each manufacturer. The output pulse of the rotation sensor has been compensated using a pulse rate corresponding to the mounted tire. Here, the pulse rate in the pulse conversion module means a so-called compensation coefficient, which represents a traveling distance corresponding to the number of output pulses per one rotation of the axle.

[0006] By using the pulse conversion module, as the tire having a larger tire size is mounted, the number of output pulses is converted into a larger number even with one rotation of the axle.

[0007]

However, in order to compensate for the difference in running distance due to the size of the mounted tire for each load weight system, each manufacturer has a pulse conversion module having a pulse rate for compensating the running distance. Was provided at the time of shipment from the factory, and the process of compensating the output pulse of the rotation sensor using the pulse rate corresponding to the mounted tire was performed.However, the pulse rate of the pulse conversion module is set according to the mounted tire at the time of factory shipment. It takes man-hours,
In addition, when the tires are replaced after shipment, there is a technical problem that the pulse rate of the pulse conversion module needs to be changed in hardware or the pulse conversion module itself needs to be replaced.

[0008] Further, even in the case of the same loading weight system, since size standards are not standardized among forklift manufacturers, there are many cases in which tires having different outer diameters are individually mounted at the time of factory shipment for each manufacturer, The compensation using the pulse rate as described above is an individual process for each mounted tire, and the pulse conversion module can be used only as a dedicated module for each mounted tire. There has been a technical problem that the pulse rate of the conversion module needs to be changed in hardware or the pulse conversion module itself needs to be replaced.

An object of the present invention is to solve such a conventional problem. In particular, the present invention measures the operation status of a forklift to generate operation management data relating to operation records and to record the operation management data. A forklift operation management device that performs pulse-rate setting means that can arbitrarily change and set pulse rate data concerning a conversion rate for converting the rotation state of the axle of the forklift into a vehicle speed. Difference due to inconsistency in the standard of the mounted tire size at the time, mileage difference due to the difference in the mounted tire size at the time of shipment for each loading weight system, or mileage due to replacement of the mounted tire after shipment When compensating for differences, a simple man-hour that enables the pulse rate to be changed interactively on the screen To realize the scene interface,
It is an object of the present invention to execute a forklift operation management device that does not require a hardware change of a pulse rate in a conventional pulse conversion module or replacement of the pulse conversion module itself.

[0010]

According to a first aspect of the present invention, there is provided a forklift operation management device which measures operation status of a forklift to generate operation management data 12a relating to operation records and records the operation management data 12a. And pulse rate data 1 relating to a conversion rate for converting a rotation state of an axle of a forklift into a vehicle speed.
Pulse rate setting means 18 capable of arbitrarily changing and setting 8a
It is a forklift operation management device 10 characterized by having:

The rotation state of the axle of the forklift in the present invention means the number of rotations per unit time. If the outer diameter of the mounted tire is known, the travel distance (unit: [m]) and speed (vehicle speed) of the forklift will be calculated based on the axle rotation state
(The unit is [m / h]) can be estimated.

According to the first aspect of the present invention, by providing the pulse rate setting means 18 and arbitrarily changing and setting the pulse rate data 18a, forklift manufacturers can set standardized tire sizes at the time of factory shipment. When compensating for mileage differences due to inconsistencies, mileage differences due to differences in the mounted tire size at the time of shipment for each loading weight system, or mileage differences due to replacement of mounted tires after shipment, the screen It becomes possible to cope with the change of the pulse rate in the interactive manner described above. Further, the pulse rate setting means 18 can substitute the hardware change of the pulse rate in the conventional pulse conversion module or the replacement of the pulse conversion module itself.

According to a second aspect of the present invention, in the forklift operation management apparatus according to the first aspect, a display having a first display mode for instructing a change setting of the pulse rate data 18a via a display screen 151 is provided. Forklift operation management device 10 having means 15
It is.

According to the invention described in claim 2, according to claim 1,
In addition to the effects described above, by providing the first display mode, the difference in mileage caused by inconsistency in the standard of the mounted tire size at the factory between forklift manufacturers, the mounting at the factory for each loading weight system Simple man-machine interface that enables interactive pulse rate change on the screen when compensating for mileage differences due to differences in tire size or mileage differences due to replacement of mounted tires after shipment. Can be realized.

According to a third aspect of the present invention, in the forklift operation management apparatus according to the second aspect, the display means 15 receives the pulse rate data 18a or the operation management data 12a and displays the operation status of the forklift. A forklift operation management device 10 having a second display mode for presenting through a display screen 151.

According to the invention of claim 3, according to claim 2,
In addition to the effects described in 1 above, by providing a second display mode that can be linked to the first display mode, the display mode can be changed to the second display mode at any time while the display screen 151 of the first display mode for displaying the operation status of the forklift is displayed. It is possible to realize a simple man-machine interface capable of changing a pulse rate in an interactive manner on the screen by switching the screen.

According to a fourth aspect of the present invention, there is provided a forklift operation management device according to the second or third aspect,
Input means 16 for generating an input signal 16a for changing the pulse rate data 18a; the pulse rate setting means 18 changing the pulse rate data 18a in accordance with the input signal 16a received from the input means 16; The forklift operation management device 10 is configured to perform setting.

According to the invention described in claim 4, according to claim 2,
Or, in addition to the effect described in 3 above, by providing the input means 16, the first operation status of the forklift is displayed.
The input signal 16a is displayed while the display screen 151 of the display mode is being displayed.
The screen can be switched to the second display mode at any time according to the conditions, and a simple man-machine interface that enables the pulse rate to be changed interactively on the screen can be realized. The input means 16 can substitute a hardware change or replacement of the pulse conversion module itself.

According to a fifth aspect of the present invention, in the forklift operation management device according to the fourth aspect, the rotation state of the axle of the forklift is measured, and a rotation pulse signal 30a corresponding to the rotation state is transmitted. A speed sensor 30 which generates the load signal 20a by measuring the load of the luggage loaded on the forklift, and receives the pulse rate data 18a and the rotation pulse signal 30a and receives the pulse rate. An operation for converting the rotation pulse signal 30a into a vehicle speed is executed based on the data 18a, and the operation management data 12 related to the vehicle speed is obtained.
a, the load signal 20a is received, the load loaded on the forklift is calculated based on the load signal 20a, and the operation management data 12 on the loaded load is calculated.
a, generating operation management data 12a related to the vehicle speed in response to a display request, and operation management calculation means 12 executing control for displaying the operation management data 12a related to the loaded load on the display means 15. The pulse rate setting means 18 converts the pulse rate data 18a for converting the rotation pulse signal 30a into a vehicle speed into the input signal 16a.
a forklift operation management device 10 that is configured to be generated in accordance with a.

According to the invention described in claim 5, according to claim 4,
In addition to the effects described in (1), by providing the operation management calculation means 12, the operation management data 12 relating to the vehicle speed reflecting the change in the pulse rate executed in the second display mode is provided.
a and the operation management data 12a relating to the loading load can be generated and displayed, and the operation management means 12 can be used to change the pulse rate in the conventional pulse conversion module in terms of hardware or replace the pulse conversion module itself.
Can be substituted.

According to a sixth aspect of the present invention, in the forklift operation management device according to the fifth aspect, an operation recording means for receiving and holding the operation management data from the operation management calculation means is provided. A forklift operation management device 10 characterized by the following.

According to the invention described in claim 6, according to claim 5,
In addition to the effects described in (1), the operation management data 12a accurately reflecting the change in the pulse rate changed by the interactive manner on the screen can be held.

[0023]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a functional block diagram for explaining a forklift operation management device 10 according to the present invention.

A forklift operation management device 1 shown in FIG.
Numeral 0 has a function of measuring the operation status of the forklift and generating data relating to the operation record and performing the recording. The operation management operation means 12, the operation recording means 14, and the display means 1
5, input means 16, pulse rate setting means 18, load sensor 20, and vehicle speed sensor 30.

The vehicle speed sensor 30 has a function of measuring the rotation state of the axle of the forklift and generating a rotation pulse signal 30a according to the rotation state in synchronization with the rotation of the axle. It is desirable to be configured centered.

The load sensor 20 has a function of measuring the load (unit: [ton]) of the load loaded on the forklift and generating a load signal 20a. More specifically, the load sensor 20 has a function of focusing on a strain gauge. It is desirable to be configured.

The operation recording means 14 stores the operation management data 12
It is desirable to use an IC card device that has a function of receiving and recording a from the operation management calculation means 12, and specifically, an IC card and an IC card reader / writer.

As described above, it is possible to record the operation management data 12a that accurately reflects the change in the pulse rate changed in the interactive manner on the screen.

The input means 16 receives pulse rate data 18
It has a function of generating an input signal 16a for changing a, and specifically, it is desirable to use a keyboard connected to the aforementioned microprocessor. In the following description, the input means 16 is represented by the keyboard 16 and the input signal 16a is represented by the keyboard signal 16a.

When such a keyboard 16 is provided, the pulse rate setting means 18 can change the pulse rate data 18a according to the keyboard signal 16a received from the keyboard 16.

That is, by providing such a keyboard 16, the keyboard signal 1 is displayed while the display screen 151 of the first display mode for displaying the operation status of the forklift is displayed.
6a, the screen can be switched to the second display mode at any time to realize a simple man-machine interface capable of changing the pulse rate interactively on the screen, and the pulse rate of the conventional pulse conversion module can be reduced. The keyboard 16 can substitute for hardware changes or replacement of the pulse conversion module itself.

The pulse rate setting means 18 has a function of arbitrarily changing and setting pulse rate data 18a relating to a conversion rate for converting the rotational state of the axle of the forklift into a vehicle speed. It is desirable to be constituted. The pulse rate setting means 18 also has a function of generating pulse rate data 18a for converting the rotation pulse signal 30a into a vehicle speed according to the keyboard signal 16a.

Here, the rotation state of the forklift axle means the number of rotations per unit time. If the outer diameter of the mounted tire is known, the travel distance (unit is [m]) and speed (vehicle speed) (unit is [m /
h]) can be estimated.

As described above, by providing the pulse rate setting means 18 and arbitrarily changing and setting the pulse rate data 18a, the difference in travel distance between the forklift manufacturers due to inconsistency in the standard of the mounted tire size at the time of factory shipment can be obtained. ,
When compensating for the mileage difference due to the difference of the mounted tire size at the time of shipment from each factory by the loading weight system, or the mileage difference due to the replacement of the mounted tire after shipping, the pulse rate of the interactive pulse rate on the screen Be able to respond to changes. Further, the pulse rate setting means 18 can substitute the hardware change of the pulse rate in the conventional pulse conversion module or the replacement of the pulse conversion module itself.

The operation management calculating means 12 receives the pulse rate data 18a and the rotation pulse signal 30a, and performs an operation of converting the rotation pulse signal 30a into a vehicle speed based on the pulse rate data 18a to generate operation management data 12a relating to the vehicle speed. Receiving the load signal 20a, calculating the load loaded on the forklift based on the load signal 20a, and operating management data 1 relating to the loaded load.
2a, and has a function of executing control to display the operation management data 12a relating to the vehicle speed and the operation management data 12a relating to the load on the display means 15 in response to a display request. It is desirable to realize by.

As described above, by providing the operation management calculation means 12, the operation management data 12 relating to the vehicle speed reflecting the change of the pulse rate executed in the second display mode is provided.
and the operation management data 12a relating to the load and the load can be generated and displayed. In addition, it is possible to change the pulse rate in the conventional pulse conversion module by hardware or replace the pulse conversion module itself.
Can be substituted.

FIG. 2 is a diagram for explaining a display screen 151 displayed on the display means of the present invention.
FIG. 2B is a diagram for explaining a selection state of the pulse rate change mode on the display screen 151 in the first display mode. FIG. 2B is a diagram illustrating a pulse rate change state on the display screen 151 of the pulse rate change mode. FIG.

As shown in FIG. 2A, the display means 15 includes a speed measurement selection mode [5 speed measurement], a load setting selection mode [6 load setting], and a zero correction selection mode [7].
Zero correction] and a first display mode (see FIG. 2) for instructing the forklift operator via the display screen 151 to change the pulse rate data 18a from among the pulse rate change modes [8 pulse settings]. I have.

When the pulse rate change mode [8 pulse setting] is selected, the display section of [8 pulse setting] flashes, and the display screen of FIG. 2B is displayed. The operator inputs the pulse rate (unit is [p / s]) from the keyboard 16 according to the instruction on the display screen of FIG. In the display screen of FIG.
/ S] has been input and is blinking.

That is, by providing the first display mode, the difference in mileage caused by the inconsistency of the standard of the mounted tire size at the time of shipment between forklift manufacturers, the difference of the mounted tire size at the time of shipment for each loading weight system, and the like. When compensating for mileage differences due to differences or mileage differences due to replacement of mounted tires after shipping, it is possible to realize a simple man-machine interface that enables the pulse rate to be changed interactively on the screen. Become like

The display means 15 has a second display mode for receiving the pulse rate data 18a or the operation management data 12a and presenting the operation status of the forklift to the operator of the forklift via the display screen 151. It is preferable that the liquid crystal display is mainly configured by a liquid crystal display whose display can be controlled by the microprocessor.

That is, by providing the second display mode that can be linked to the first display mode, the screen is switched to the second display mode at any time while the display screen 151 of the first display mode for displaying the operation status of the forklift is displayed. As a result, a simple man-machine interface capable of changing the pulse rate in an interactive manner on the screen can be realized.

FIG. 3 is a flowchart for explaining the operation management processing of the forklift operation management device 10 of FIG.

When the power of the forklift operation management device 10 is turned on and the forklift operation management device 10 becomes operable (step S1), the operation management operation means 12,
Operation recording means 14, display means 15, input means 16, pulse rate setting means 18, load sensor 20, vehicle speed sensor 3
Initialization processing such as 0 is performed (step S
2) A confirmation is made on the display screen 151 of the display means 15 as to whether or not the screen mode is the delivery state (step S3).

Subsequently, when the operation management calculation means 12 detects that the setting key provided on the keyboard 16 has been pressed (YES in step S31), the operation management calculation means 1 operates.
2 is a speed measurement selection mode [5] as shown in FIG.
Speed display], load setting selection mode [6 load setting], zero correction selection mode [7 zero correction], and pulse rate change mode [8 pulse setting] are displayed on the display unit 15 (see FIG. 3). YES in step S31
→ Step S32). If the setting key has not been pressed, step S4 is executed.

Subsequently, pulses are selected from speed measurement selection mode [5 speed measurement], load setting selection mode [6 load setting], zero correction selection mode [7 zero correction], and pulse rate change mode [8 pulse setting]. Rate data 18
If the operation management calculation unit 12 detects that the change setting [8 pulse setting] of a is selected via the keyboard 16 (YES in step S33), the display of the change setting [8 pulse setting] of the pulse rate data 18a is displayed. The operation management calculation means 12 executes the control of blinking the portion on the display means 15, and the display screen of FIG. 2B is displayed (step S34). The operator inputs the pulse rate (unit is [p / s]) from the keyboard 16 according to the instruction on the display screen of FIG. In the display screen of FIG. 2B, 100 [p / s] is input, and at this time, the operation management calculation means 12 detects this input state and 100
The display unit 15 controls the blinking of the display portion of [p / s].
Execute for

When the operation management calculation means 12 detects that the set key provided on the keyboard 16 has been pressed (YES in step S35), the operation management calculation means 12 determines that the change setting of the pulse rate data 18a has been determined. Then, step S36 is executed. When the operation management calculation unit 12 detects that the set key provided on the keyboard 16 has not been pressed (NO in step S35),
Step S34 is executed.

The operation management calculation means 12 instructs the operator to insert an IC card into the IC card device 14 (step S4). Subsequently, the operation management calculation means 12
Operation status of the forklift from the vehicle speed sensor 30 or the load sensor 20 (rotation pulse signal 30a or load signal 20a)
Is measured, the vehicle speed is obtained by calculating the product of the rotation pulse signal 30a and the pulse rate data 18a, and the load signal 20a
Is calculated to calculate the data relating to the operation record relating to the excess, and the control of the operation record to be recorded on the IC card as the operation management data 12a is started (step S5).

[0049]

According to the first aspect of the present invention, by providing pulse rate setting means to arbitrarily change and set the pulse rate data, forklift manufacturers can set the standard of the size of the mounted tire at the time of factory shipment. When compensating for mileage differences due to inconsistencies, mileage differences due to differences in the mounted tire size at the time of shipment for each loading weight system, or mileage differences due to replacement of mounted tires after shipment, the screen It becomes possible to cope with the change of the pulse rate in the interactive manner described above. Further, the pulse rate setting means can substitute the hardware change of the pulse rate in the conventional pulse conversion module and the replacement of the pulse conversion module itself.

According to the invention described in claim 2, according to claim 1
In addition to the effects described above, by providing the first display mode, the difference in mileage caused by inconsistency in the standard of the mounted tire size at the factory between forklift manufacturers, the mounting at the factory for each loading weight system Simple man-machine interface that enables interactive pulse rate change on the screen when compensating for mileage differences due to differences in tire size or mileage differences due to replacement of mounted tires after shipment. Can be realized.

According to the invention described in claim 3, according to claim 2
In addition to the effects described in the above, by providing a second display mode that can be linked to the first display mode, the screen is switched to the second display mode at any time during the display of the first display mode for displaying the operation status of the forklift. , A simple man-machine interface that enables the pulse rate to be changed interactively on the screen can be realized.

According to the invention described in claim 4, according to claim 2,
Or, in addition to the effect described in 3 above, by providing the input means, the second display is displayed at any time according to the input signal during the display of the display screen of the first display mode for displaying the operation status of the forklift.
It is possible to realize a simple man-machine interface that enables the pulse rate to be changed interactively on the screen by switching the screen to the display mode. The input means can replace the conversion module itself.

According to the invention described in claim 5, according to claim 4,
In addition to the effects described in the above, by providing the operation management calculation means, it is possible to generate the operation management data on the vehicle speed and the operation management data on the load reflecting the change of the pulse rate executed in the second display mode. The display becomes possible, and the operation management calculation means can substitute the hardware change of the pulse rate in the conventional pulse conversion module or the replacement of the pulse conversion module itself.

According to the invention of claim 6, according to claim 5,
In addition to the effects described in (1), it is possible to hold the operation management data that accurately reflects the change in the pulse rate changed in the interactive manner on the screen.

[Brief description of the drawings]

FIG. 1 is a functional block diagram for explaining a forklift operation management device according to the present invention.

FIG. 2 is a diagram for explaining a display screen displayed on a display means of the present invention. FIG. 2A shows a selection state of a pulse rate change mode on a display screen 151 in a first display mode. FIG. 2B is a diagram for explaining a change state of the pulse rate on the display screen 151 of the pulse rate change mode.

FIG. 3 is a flowchart illustrating an operation management process of the forklift operation management device of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Forklift operation management device 12 ... Operation management calculation means (microcomputer) 12a ... Operation management data 14 ... Operation recording means (IC card) 15 ... Display means 151 ... Display screen 16 ... Input means (keyboard) 16a ... Input signal 18 ... Pulse rate setting means 18a ... Pulse rate data 20 ... Load sensor 20a ... Load signal 30 ... Vehicle speed sensor 30a ... Rotation pulse signal

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI G07C 5/00 G07C 5/00 Z

Claims (6)

[Claims] 1. A forklift operation management device that measures operation status of a forklift to generate operation management data relating to operation records and records the operation management data, and converts a rotation state of an axle of the forklift into a vehicle speed. And a pulse rate setting means for arbitrarily changing and setting pulse rate data relating to a conversion rate for the forklift operation. 2. The forklift operation management device according to claim 1, further comprising display means having a first display mode for instructing a change setting of the pulse rate data via a display screen. 3. The display device according to claim 2, wherein the display means has a second display mode for receiving the pulse rate data or the operation management data and presenting the operation status of the forklift via a display screen. Forklift operation management device. 4. An input means for generating an input signal for changing the pulse rate data, wherein the pulse rate setting means changes the pulse rate data according to an input signal received from the input means. The forklift operation management device according to claim 2, wherein the forklift operation management device is configured to perform the operation. 5. A vehicle speed sensor for measuring a rotation state of an axle of a forklift and generating a rotation pulse signal corresponding to the rotation state in synchronization with the rotation of the axle, and measuring a load of luggage loaded on the forklift. A load sensor for generating a load signal, and receiving the pulse rate data and the rotation pulse signal, performing an operation of converting the rotation pulse signal into a vehicle speed based on the pulse rate data, and generating operation management data related to the vehicle speed. Receiving the load signal, calculating a load loaded on the forklift based on the load signal to generate operation management data on the load, and operating control data on the vehicle speed in response to a display request; An operation management arithmetic unit for executing a control for displaying operation management data on the load on the display unit; 5. The forklift operation management device according to claim 4, wherein the loose rate setting unit is configured to generate the pulse rate data for converting the rotation pulse signal into a vehicle speed according to the input signal. 6. . 6. The forklift operation management device according to claim 5, further comprising operation recording means for receiving and holding the operation management data from the operation management calculation means.