KR102008021B1

KR102008021B1 - Monitor control method using joystick

Info

Publication number: KR102008021B1
Application number: KR1020120148111A
Authority: KR
Inventors: 박광석
Original assignee: 두산인프라코어 주식회사
Priority date: 2012-12-18
Filing date: 2012-12-18
Publication date: 2019-08-06
Also published as: KR20140080765A

Abstract

The monitor control method using the joystick according to an embodiment of the present invention is a method of controlling the internal monitor of the cockpit using a joystick for controlling an external work device, and determining whether or not a worker determines whether the operator is working in the cockpit. In the step, if it is determined that the worker is working in the operation determination step, controlling the joystick to the external work mode for controlling the external work device, and if it is determined that the worker is not working in the operation determination step, Controlling the joystick to an internal monitor operating mode. This allows the joystick to control external work devices to operate the monitor inside the cockpit, allowing the operator to comfortably operate the monitor without changing posture.

Description

MONITOR CONTROL METHOD USING JOYSTICK}

The present invention relates to a method for controlling a monitor of a construction machine, and a control method for operating a monitor screen in a cockpit through a joystick that controls an external work device of a construction machine such as a boom or a bucket of an electric manual control valve (EMVC) device. It is about.

Complex construction machines such as wheel loaders, bulldozers, excavators and cranes are used in various construction sites. Such construction machinery enables large constructions to be safely performed in a short time by carrying out large constructions that are impossible with manpower.

However, these construction machines usually adopt a complicated operating method and require a high concentration of the user when using these machines, and thus, there is less operation of the monitors such as dashboards and screens that exist inside the construction machine during the work.

For this reason, the cockpit of a general construction machine is provided with a separate switch for operating the monitor in addition to the joystick for controlling the external working device of the construction machine (for example, the boom structure, the arm structure, the bucket structure, etc.) and the instrument panel or the surrounding area. The monitor can be operated when the operator is not working.

However, in the case of a large construction machine, it is very inconvenient to operate a separate switch for the monitor operation because the access to the instrument panel is not easy in a sitting position in the cockpit.

Therefore, in order to solve the above-mentioned inconvenience, there is a need for a control method and an apparatus for performing such a method for easily and quickly operating a monitor in a more comfortable posture in operating a monitor of a construction machine.

The present invention to solve the above problems, without a separate monitor operation switch, a control method that can operate the monitor of the cockpit using a joystick that can operate the external working device of the construction machine, for example, the boom structure and the bucket structure And a control device.

The present invention is focused on the joystick for controlling the external work device of the construction machine can recognize the up, down, left, right signals when the operator moves the joystick in the case of sensing the non-work of the operator, the image of the joystick The present invention provides a control method and a control device capable of moving and selecting up, down, left, and right in a monitor screen by moving up, down, left and right.

The monitor control method using the joystick according to an embodiment of the present invention is a method of controlling the internal monitor of the cockpit using a joystick for controlling an external work device, and determining whether or not a worker determines whether the operator is working in the cockpit. In the step, if it is determined that the worker is working in the operation determination step, controlling the joystick to the external work mode for controlling the external work device, and if it is determined that the worker is not working in the operation determination step, Controlling the joystick to an internal monitor operating mode.

According to one embodiment, when the joystick is in the internal monitor operation mode, the screen movement of the monitor is controlled by the movement of the joystick.

According to one embodiment, the joystick includes a first joystick for controlling the up and down movement, and a second joystick for controlling the left and right movement, the first and second joystick when the joystick is in the internal monitor operation mode By controlling the movement of the monitor screen up, down, left, right.

According to an embodiment, the joystick includes at least one button, and when the joystick is in an internal monitor operation mode, the selection of the monitor screen is controlled through the button.

According to an embodiment of the present disclosure, the determining whether the operation includes determining a non-working determination condition of the operator, wherein the non-working determination condition set includes: pilot cut off or not; whether the boom position is fixed at less than 20%, whether the MCV pressure sensor is below 5 bar, whether the forward and backward levers are neutral, and whether the parking brake is activated.

According to the present invention, the joystick for controlling the external work device can operate the monitor inside the cockpit so that the operator can easily and comfortably operate the monitor without changing the posture to press a separate monitor operation switch.

In addition, according to the present invention, by determining whether the worker is working or non-working, the control of the external work device and the control of the internal monitor screen of the cockpit can be easily operated with one joystick set.

Further, according to the present invention, there is no need to provide a separate monitor operation switch, thereby reducing the cost.

In addition, according to the present invention, in determining whether an operator's work or non-working is performed, the joystick set is used for the adjustment of the monitor screen by considering the non-working only when all of a plurality of conditions are satisfied. The use case can be reduced to a minimum, and both work stability and typography convenience can be satisfied.

1 is a flowchart schematically illustrating a method of generating an internal monitor operation mode according to an embodiment of the present invention;
2 is a diagram schematically showing a circuit diagram of the controller 100 according to the present invention.

The above objects, features, and advantages will be described in detail with reference to the accompanying drawings, whereby those skilled in the art to which the present invention pertains may easily implement the technical idea of the present invention. In describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Construction machinery using the control method and control device of the present invention is a machine used in construction sites, such as wheel loaders, bulldozers, excavators, cranes, etc., generally illustrated as a heavy equipment that requires a complex operation method and a high concentration. Joystick referred to herein refers to a general input device such as a lever provided in the cockpit of a construction machine. Thus, the term joystick is not intended to limit a particular shape, shape or function but includes various input devices such as operation levers, operation bars and operation handles that can be used in general construction machinery.

The external working device of the construction machine referred to in the present specification means a portion of the device that is disposed outside the construction machine to perform a substantial construction or work. Thus, such external work devices include, for example, a cockpit where a worker sits and a subsequent boom portion, a bucket portion directly exerting an external force on the object, an arm portion connecting the boom portion and the bucket portion, and the like. can do. In addition, it may include device structures used in a variety of heavy equipment.

According to the control method according to an embodiment of the present invention, the joystick can be used to control the external working device of the construction machine, and can also be used to operate the monitor of the cockpit. Therefore, the present invention includes a control unit that determines whether the worker is currently working (working) through the external work device of the construction machine or is finished (non-working) when the work is finished and the monitor in the cockpit is operated. Due to this configuration of the control unit, the present invention allows the joystick to be used to control an external work device when it is judged to be working through a set of joysticks and to use the joystick to operate the internal monitor of the cockpit when it is determined to be non-working. Be sure to

According to one embodiment, the controller may determine whether the operator is operating the joystick before the step of determining whether the operator is working in the cockpit. If it is determined that the operator operates the joystick, then the step of determining whether such operation is to work through an external work device or to operate the monitor in the cockpit may follow.

The step of determining whether work is performed by the control unit determines whether the worker is non-working through the set of non-work determining conditions. The non-work determining condition set is exemplified as a set including conditions in which an operator can determine that the non-work is in progress. The non-working determination condition set may be integrated and programmed in the control unit, or may be programmed in a device provided separately from the control unit. Conditions included in the set of non-work determining conditions may be variously changed, added, or deleted according to the type, performance, work environment, etc. of the construction machine.

According to one embodiment, the non-work determination condition set includes whether the pilot cuts off, whether the boom position is fixed at less than 20%, whether the MCV pressure sensor is below 5 bar, whether the forward and backward levers are neutral, and the parking brake. Whether it is enabled or not. However, as mentioned above, in addition to these five conditions, other conditions may be added, and some of the five conditions may be excluded depending on the situation.

Pilot cut off means whether the operator has pressed the switch to stop providing hydraulic pressure to the device. For example, if the operator presses the corresponding switch to operate the hydraulic shutoff valve and transmits this state to the VCU, the condition is satisfied. As a result, whether or not the pilot cut-off may include whether the power provided to the device is cut off.

Whether the boom position is fixed at less than 20% depends on the condition of the boom. In this case, 20% may mean a working angle at which the actual boom operates or a current angle with respect to the maximum working angle. For example, if a sensor capable of detecting the position of the boom detects the position of the boom less than 20%, this may mean that the boom is fixed at an angle when the boom is not working. Meanwhile, the condition of 20% may be adjusted to 15%, 10%, etc. according to the type, performance, work environment, etc. of the construction machine.

Whether the MCV pressure sensor is below 5 bar is a condition that determines whether the MCV is operating. If the pressure detected by the MCV pressure sensor is low, it may mean that the MCV is not operating. For example, if the MCV pressure sensor shows about 0 bar, this indicates that the MCV is not working.

Neutrality of forward and backward levers and parking brake actuation are conditions that directly indicate whether the operator is working. If the forward and backward levers are neutral and the brakes are activated, this indicates that the operator is not working.

The control unit determines whether the conditions of the non-working determination condition set described above are satisfied. When the controller determines that the worker is in operation based on the conditions, the joystick is controlled to the external work mode. In this case, the joystick is used to control the external working device of the construction machine. On the contrary, when the controller determines that the operator is not working through the above conditions, the joystick is controlled in the internal monitor operation mode, in which case the joystick is used to manipulate the screen of the monitor.

According to one embodiment, in determining whether or not to work, it is preferable to change the mode of the joystick to the mode of operating the internal monitor when all the conditions included in the non-working determination condition set is satisfied. This is to ensure the stability of the work by preventing the operator from changing the mode of the joystick as much as possible. However, it is also possible to change the joystick mode to the internal monitor operation mode when one or more necessary conditions are satisfied according to the type, performance, and working environment of the construction machine.

When the joystick is controlled in the internal monitor operation mode, the screen on the monitor is controlled to move (move) the joystick. For example, when the joystick moves up, down, left, right, and the like, the screen on the monitor can move up, down, left, right, and rotation. The movement of the screen on the monitor includes all movements of the entire screen appearing on the monitor or movement of cursors, menus, icons, etc. in the screen.

According to one embodiment, the joystick may be composed of at least two joysticks (first joystick and second joystick). In this case, the first joystick is responsible for the up and down movement, and the second joystick is in charge of the left and right movement so that the up, down, left and right movements of the screen on the monitor can be operated with two joysticks. Meanwhile, the joystick may include at least one button, and by pressing the button, it is possible to select a screen, a menu, an icon, and the like on the monitor.

Hereinafter, a method of generating an internal monitor operation mode according to an embodiment of the present invention will be described with reference to FIG. 1. The embodiment described below describes that five conditions are included in the set of non-operation judgment conditions, and the joystick is controlled in the internal monitor operation mode when all five conditions are satisfied.

The controller first determines whether the operator operates the joystick (S10). If the operator does not operate the joystick, the monitor control according to the present invention does not occur. However, if the operator determines that the joystick is operated, the control unit goes to the step of determining whether the operation of the joystick is for the operation or the operation of the monitor.

The operation determining step S20 may include at least one of five conditions. At this time, the controller first determines whether the pilot cut-off switch and the parking switch are off (S21). In the present embodiment, the parking brake is actuated by whether the parking switch is on or off. If any of the pilot cut off switch and the parking switch is on, the control section terminates the monitor control according to the present invention. However, if both the pilot cut-off switch and the parking switch are turned off, the controller then determines whether the boom position is less than 20% (S22). If the boom position is 20% or more, the control section terminates the monitor control according to the present invention. On the other hand, if it is determined that the boom position is less than 20%, the control unit then determines whether the MCV pressure sensor is less than 5bar (S23). If it is determined that the MCV pressure sensor is 5bar or more, the controller terminates the monitor control according to the present invention. However, if it is determined that the MCV pressure sensor is less than 5bar, the control unit then determines whether the forward and backward lever is in neutral (S24). If the forward and backward levers are not in neutral, the control unit ends the monitor control according to the present invention, and if the forward and backward levers are in neutral, the control unit generates an internal monitor operation mode (S30).

In the above description, the conditions are listed in order for convenience of understanding, but the order of the conditions is not limited.

When the internal monitor operation mode occurs, the joystick can be controlled to the internal monitor operation mode and used to move the screen of the monitor. Looking at the control of the monitor screen according to the operation of the joystick (S40) as an example, when the up and down movement input through the first joystick, the up and down movement signal through the CAN communication from the VCU of the control unit to the GP for controlling the monitor screen Is passed. This causes the monitor screen to move up and down. The same principle applies to the case where left and right movement input is performed through the second joystick. Meanwhile, when a button formed on the first or second joystick is pressed, an enter signal is transmitted through CAN communication from the VCU of the controller to the GP for controlling the monitor screen.

2 is a diagram schematically showing a circuit diagram of the controller 100 according to the present invention.

The control unit 100 includes a vehicle control unit (VCU) 110. The joystick input part 120, the external work operation control part 130, the monitor control condition part 140, and the monitor screen control part 150 are circuitically connected to the VCU 110.

The joystick input part 120 includes a first joystick EMCV unit 121 and a second joystick EMCV unit 122. The input signal through the joystick is transmitted to the VCU 110 through the first joystick EMCV unit 121 and the second joystick EMCV unit 122.

The external work operation control part 130 includes EMCV units 131, 132, 133, and 134 for various operations of the external work device. For example, the EMCV units 131, 132, 133, and 134 may be EMCV units for a rising operation, a lowering operation, a crowd operation, and a dump operation of an external work device, respectively. When the joystick is controlled in the external work mode, a signal transmitted through the joystick input part 120 may be transmitted to the external work motion control part 130 via the VCU 110.

The monitor control condition part 140 includes a pilot cut off switch 141, a parking brake switch 142, a forward and backward lever neutral signal switch 143, an MCV pressure port sensor 144, and a boom angle sensor 145. do. Signals through each switch and sensor may be delivered to the VCU (110).

The monitor screen control part 150 includes the GP 151. When the joystick is controlled in the internal monitor operation mode, a signal transmitted to the VCU 110 through the joystick input part 120 is transferred to the monitor screen control part 150 and then transferred to the GP 151 through CAN communication. Through this, the input through the joystick is output as the monitor screen moves.

The above description is merely illustrative of the present invention, and various modifications may be made by those skilled in the art without departing from the technical spirit of the present invention. Therefore, the embodiments disclosed in the specification of the present invention are not intended to limit the present invention. The scope of the present invention should be construed by the claims below, and all techniques within the scope equivalent thereto will be construed as being included in the scope of the present invention.

S10: determining whether to operate the joystick
S20: Steps to determine if work
S30: Generation step of the internal monitor operation mode
S40: Control step of the monitor screen according to the operation of the joystick
100: control unit 110: VCU
120: joystick input part 130: external job operation control part
140: monitor control condition part 150: monitor screen control part

Claims

In a method of controlling a cockpit monitor using a joystick that controls an external work device,
Determining whether the worker is working in the cockpit;
Controlling the joystick to an external work mode for controlling an external work device when it is determined that the worker is working in the job determination step; And
If it is determined that the worker is in the non-working step, the controlling of the joystick to an internal monitor operation mode;
The step of determining whether the operation is a monitor control method using a joystick is determined based on whether or not the boom position (fixed position) is fixed below a predetermined position.

In a method of controlling a cockpit monitor using a joystick that controls an external work device,
Determining whether the worker is working in the cockpit;
Controlling the joystick to an external work mode for controlling an external work device when it is determined that the worker is working in the job determination step; And
If it is determined that the worker is in the non-working step, the controlling of the joystick to an internal monitor operation mode;
The determining whether or not the work is performed includes: a condition for determining whether the forward and backward levers are neutral, and a condition for determining whether the parking brake is activated, wherein each of the operator's non-work determination conditions includes: Monitor control method using the joystick to determine whether all the conditions are satisfied.

The method of claim 2,
The set of conditions for determining whether a worker is not working further includes a condition for determining whether a boom position is fixed below a preset position.

The method according to any one of claims 1 to 3,
When the joystick is controlled in the internal monitor operation mode, the screen of the monitor is moved by moving the joystick,
The joystick includes a first joystick for controlling up and down movement and a second joystick for controlling left and right movement, and when the joystick is in an internal monitor operation mode, the monitor is moved through movement of the first and second joysticks. It controls the up, down, left, right movement of the screen
How to control the monitor using the joystick.

The method according to any one of claims 1 to 3,
The joystick includes at least one button, and when the joystick is in the internal monitor operation mode, the selection of the monitor screen is controlled through the button.
How to control the monitor using the joystick.

The method according to any one of claims 1 to 3,
The non-operation determination condition set,
A condition for determining whether a pilot cut off; And
a condition for determining whether the mcv pressure sensor is less than 5 bar;
Further comprising at least one of
How to control the monitor using the joystick.