JP3063126B2 - Inspection device for control unit of work machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inspection device for a control unit of a working machine, and more particularly to an inspection device for a control unit of a working machine that allows an inspection item to be arbitrarily selected. It is.

[Prior Art] Conventionally, a work equipped with a control unit that processes data of a setting device of a working machine such as a tractor and a combiner, and data of a switch, a sensor, and the like by a CPU, and electrically automatically controls a hydraulic pressure for driving a working unit. Some of these types of working machines are provided with a communication connection unit for inspection of the control unit. And
It is known that a dedicated inspection machine is connected to the communication connection unit, and data is serially transferred from the control unit to a CPU of the inspection machine and displayed on a display device of the inspection machine.

[Problems to be Solved by the Invention] The conventional control unit inspection apparatus described above requires a long communication time because data of all items is transmitted from the control unit to the inspection machine. However, there may be a case where only some data is required instead of all data, and in such a case, transmitting all data is a waste of time.

Thus, various sensors attached to the working machine have unique data for each sensor alone, average values processed from the unique data, data after addition, and the like. Reading at the same time is time-consuming and error-prone. Therefore, there is a technical problem to be solved in order to select and transmit only necessary data of the sensor and improve communication efficiency to improve efficiency of inspection work. The purpose is to solve the problem.

[Means for Solving the Problems] The present invention has been proposed to achieve the above object, and a communication connection unit is provided in a control unit incorporating a plurality of programs for automatically controlling the operation of a work machine. An inspection machine is connected to the communication connection section to read out the operating state of the program or the sensors and switches of the powered vehicle, and to display the setting state of the program and the operating state of the mechanism section. In the control unit inspection apparatus, the inspection machine is provided with a transmission means for transmitting the program and the designation code of the sensor and the like, and the control unit selects data of a setting device or a sensor etc. corresponding to the transmission content. The present invention is to provide an inspection device for a control unit of a working machine, characterized in that a selection means for transmitting the data to the inspection machine is provided.

[Operation] From the external inspection machine connected to the control unit, to the control unit, any one of the unique data for each of the various sensors, the average value processed from this unique data, or the data after addition is designated. Then, the control unit selects data corresponding to the request content and transmits the data to the inspection machine. This received data is displayed on the display unit of the inspection machine, and the operator can read out only the data necessary for the sensor.

Hereinafter, an embodiment of the present invention will be described with reference to the attached drawings. For convenience of explanation, technical matters belonging to the related art will be described at the same time. FIG. 1 shows a tractor (1) as an example of a working machine, in which a rotary (3) is connected via a three-point link mechanism (2). Reference numeral (4) denotes a control panel, on which various setting dials, switches and the like, which will be described later, are provided. A control unit (5) having a CPU, which will be described later, is built in the control panel (4). or,
(20) is a lift arm angle sensor provided at the rotation base of the lift arms (6) and (6), (21) is a tillage depth sensor, (22)
Is a draft sensor, (23) is a stroke sensor that detects the left-right inclination angle of the rotary (3), and (24) is an inclination sensor that detects the left-right inclination of the tractor (1). or,
(10) is a proportional flow control valve that drives the lift arms (6) and (6), and (11) is a horizontal control valve that connects the lift arms (6) and (6) with the lower rings (7) and (7). The lift rod cylinder (9) interposed in one of the lift rods (8) (8) to be driven is driven.

The control unit (5) drives the proportional flow control valve (10) to raise the lift arm (6) (to make the detection value of the lift arm angle sensor (20) coincide with the set value of the position lever (30). The angle of 6) is controlled to control the height of the towed vehicle such as the rotary (3). Also, the tillage setting dial (3
The proportional flow control valve (10) and the lift arms (6) and (6) are controlled so that the detection value of the tillage depth sensor (21) matches the set value of 1), and the tillage depth of the rotary (3) is set to the set value. To keep. Then, the lift control cylinder (9) is driven by controlling the horizontal control valve (11), and the detection value of the stroke sensor (23) is corrected by the detection value of the tilt sensor (24) to adjust the tilt adjustment dial (39). ) Is controlled so as to match the set value, and the horizontal attitude of the rotary (3) is maintained constant.

The above-mentioned various sensors, switches, control valves and the like and the CPU (12) of the control unit (5) are connected as shown in FIG.
The CPU (12) processes input signals from sensors and setting devices,
An output signal is sent to the proportional flow control valve (10) and the horizontal control valve (11). The input signal, the output signal and the CPU (1
The data of 2) can be taken out from the communication connection unit (13), and as shown in the figure, the inspection unit (15) connected to the communication connection unit (13) via the connection cable (14) and the control unit ( 5)
To send and receive data to and from the CPU (12).

The inspection machine (15) has a built-in CPU (16), and the CPU (16)
An external memory (17) such as an IC card in which the processing program described above is stored is mounted and used. The external memory (17) is created for each type of work machine to be inspected, and is used for a tractor, a combine, and the like.
7) Select and use. Also, (18), (18)... Are operation switches, and (19) is a liquid crystal display.

Next, the control unit (5) of the tractor (1) and the inspection machine (15)
The procedure of the communication control with the server will be described with reference to FIGS. 3 and 4. FIG. 3 is a transmission and reception flowchart of the inspection machine (15), and FIG. 4 is a transmission and reception flowchart of the control unit (5). First, the external memory (17) for the tractor is installed in the inspection machine (15), the power is turned on and the CPU (16) is started (step 101), and the input selection screen is displayed on the liquid crystal display (19). Is done. The input items include an output request for operating the lift arms (6) and (6), the lift rod cylinder (9), a request for inputting information indicating the set values of the control panel (4), the state of the sensor, the operation switch, and the like. Requests for processing data such as average value data of sensors and output data after correction processing held by the control unit (5) or set reference value data, and requests for self-diagnosis data by the CPU (12) of the control unit (5). is there.
When the output request, the input request, and the processing data request are selected, each of the sensors (20) to (2) shown in FIG.
4) Select the designated code for each of the setting devices (30) to (41) using the operation switches (18), (18) ... (Step 102).
When displayed on the liquid crystal display unit (19), the designated code is determined (step 103), and the transmitting operation transmits the designated code and the instruction content to the CPU (12) of the control unit (5) (step 104). The transmission signal is transmitted twice to prevent a transmission error (step 105), and the CPU (12) of the control unit (5) is used.
Are received as shown in FIG. 4 (step 202).

If the same transmission data is received twice consecutively, the process proceeds from step 203 to step 204, and it is determined whether or not the content of the command is an output request. Step 205 for output request
The output data is determined according to the request contents, and the output system, the output form, the output frequency, the ON time, and the like are determined, for example, as the lift data of the lift arms (6) and (6). Subsequently, it is determined in step 206 whether the command is an output command or a standby command. If the command is an output command, the determined output data is output (step 207), and the output state and the input data of the sensors are transmitted to the inspection machine (15). I do.

When the command content is an input information request, the process proceeds from step 210 to step 211, and the designated setting devices (30) to (4)
1) Or transmit the status of the sensors (20) to (24). If the content of the command is a processing data request, the process proceeds from step 212 to step 213, where the average value data, reference value data, correction gain addition data, etc. of the designated sensors (20) to (24) are transmitted. When the content of the command is a request for the self-diagnosis data of the CPU (12), the process proceeds from step 214 to step 215, and the result of the self-diagnosis is transmitted. If there is any error in the command content or only the designated code, step 21
Send “No command” at 6. The CPU (12) transmits the same data twice with the designation code from the inspection machine (15) as the first data at the time of transmission.

The transmission data is received by the CPU (16) of the inspection machine (15) (step 106). When the specified code is received, the process proceeds from step 107 to step 108, and when the same data is received twice, The transmission request data is selected from the reception data (step 109), and the content is displayed on the liquid crystal display (19) based on the data (step 110).

The present invention can be variously modified without departing from the spirit of the present invention, and it goes without saying that the present invention extends to the modified one.

[Effects of the Invention] As described in detail in the above-described embodiment, the present invention provides, from the inspection machine side, unique data for each sensor unit, or an average value processed from this unique data or data after addition. Of these, only any necessary data is specified, and only the required data is transmitted from the control unit to the inspection machine based on this specification, so that the transmission data length is reduced and the communication time is reduced. Therefore, the inspection efficiency is improved by lowering the transmission error rate of each data of various sensors and increasing the speed of communication, which can contribute to improvement of working machines such as a tractor and a combine.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, FIG. 1 is a side view of a tractor, FIG. 2 is an explanatory view showing connection of a control unit and an inspection machine,
FIG. 3 is a flowchart showing a transmission / reception operation of the inspection machine, and FIG. 4 is a flowchart showing a transmission / reception operation of the control unit. (1) Tractor, (5) Control unit (12) (16) CPU, (13) Communication connection unit (15) Inspection machine (20) Lift arm angle sensor (21) )… Tillage sensor, (22)… draft sensor (23)… stroke sensor, (24)… inclination sensor (30)… position lever (31)… tillage setting dial (39)… … Tilt adjustment dial

Claims (1)

(57) [Claims] 1. A communication section is provided in a control section containing a plurality of programs for automatically controlling the operation of a work machine, and an inspection machine is connected to the communication connection section, and the program or a sensor or a switch of a powered vehicle is provided. To read the operating state of the program and to display the setting state of the program and the operating state of the mechanism section, and to provide the inspection machine with a transmission means for transmitting the program and the designation code of the sensor and the like, and from the inspection machine Transmitting data such as sensors to the control unit, and a control unit inspection device of a working machine configured to select data corresponding to the transmitted data by the control unit and transmit the data to the inspection machine. In the inspection machine, means for selecting one of the items divided into the input information request of various sensors and the data request after processing of the sensor, and in response to the selected request, Controller test device for a working machine, characterized in that a means for reading and displaying seeds sensor information.