JP2002209501A - Passenger management machine - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a passenger management machine provided with a distribution control device capable of using a nonvolatile memory by greatly reducing the number of rewrites. SOLUTION: This riding management machine enables a working machine such as a boom sprayer to be connected to the rear of the machine body, and is configured to store a control set value, a working amount, and the like in a nonvolatile memory, and to turn off a main power switch. At times, the control device itself can be turned off. During operation, the memory in the control device is rewritten. When the main power switch is turned off, the control device itself rewrites the control setting values, the work amount, and the like to the non-volatile memory, and then powers off the control device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to spray control of a boom sprayer used for a passenger management machine.

[0002]

2. Description of the Related Art A passenger management machine is widely used as a machine for attaching a working machine to a rear portion or as a machine exclusively for controlling. By the way, when a chemical spray is applied to a crop by attaching a boom sprayer, the conventional spray control device can turn on / off the control device independently of the main power switch.
Even when the power is turned off, the current for retaining the memory flows. Therefore, when the battery is replaced, all stored values are initialized. Further, even if the main switch is turned off, the battery is discharged because a very small current flows. Also, EEPR
In a method of writing data in a nonvolatile memory such as an OM, when there is an item such as an accumulated spray amount that needs to be rewritten every predetermined time (for example, one second), the item exceeds the limit of the number of times that the element can be rewritten in a short time. As a result, there is a risk that the element will be damaged. In addition, when controlling the spray amount by detecting the spray flow rate,
If the flow rate sensor that detects the spray flow rate during the work breaks down, there is a problem that spraying cannot be performed.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to reduce the number of times of rewriting so that a nonvolatile memory can be used. The present invention is to provide a riding management machine provided with a spraying control device. It is another object of the present invention to provide a riding management machine that can switch to pressure spraying and continue spraying work when a flow rate sensor that detects a spraying flow rate fails.

[0004]

This object is achieved by the present invention.
According to the invention, the front and rear wheels have substantially the same diameter, the front and rear wheels are independently driven, the front and rear four wheels can be steered, and a work management machine such as a boom sprayer can be connected to the front or rear of the body. In the configuration, the control set value, the work amount, and the like are configured to be stored in the non-volatile memory, and when the main power switch is turned off, a mechanism that allows the control device itself to turn off the power of the control device is provided. This is achieved by rewriting the memory and turning off the power of the control device after the control device itself rewrites the control setting values and the work amount in the non-volatile memory when the main power switch is turned off. Also,
According to a second aspect of the present invention, in the first aspect, the display items before the power is turned off are displayed first when the power is turned on next time. The invention according to claim 3 is that the front and rear wheels have substantially the same diameter, the front and rear wheels are independently driven, and the front and rear four wheels can be steered, and a work machine such as a boom sprayer can be connected to the front or rear of the body, In a passenger management machine that performs spraying control so that a spraying amount is set according to a detection value of a flow rate sensor that detects a vehicle speed and a spraying flow rate, the riding management machine includes a pressure sensor that detects spraying pressure, and the flow rate sensor fails. In such a case, it is possible to switch to spraying amount control by pressure.
Further, the invention according to claim 4 is that the front and rear wheels have substantially the same diameter, the front and rear wheels are independently driven, and the front and rear four wheels can be steered, and a work machine such as a boom sprayer can be connected to the front or rear of the body, In the passenger management machine that performs the spraying control so that the spraying amount becomes the set spraying amount, when the spraying amount is set, when the nozzle of the boom does not correspond to the set spraying amount, a means for issuing an alarm is provided. .

[0005]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall side view of a passenger management machine according to the present invention. As shown in FIG. 1, in a passenger management machine 1 according to the present invention, front and rear wheels 2 and 3 have substantially the same diameter,
The front and rear wheels 2, 3 are independently driven, and enable front and rear four-wheel steering. The driver's seat is provided with a steering wheel 6, an instrument panel 7, a seat 8, and the like, and a hitch 10 for connecting another working machine such as a rotary plow or a plow is provided at the rear of the machine.
It has. In the present invention, no other working machine is used, and the hitch 10 is locked with a pin in an up position to support the bottom of the control tank 9 of the boom sprayer. Further, a control tank 9 is arranged so as to surround the sheet 8 in a U-shape, and a control pump 18 is installed on a floor surface below the sheet 8. An engine 5 is mounted in a hood 4 at the front of the fuselage, and a transmission case 11 and the like are arranged below the deck. Further, an operation panel 13 is arranged on the side of the sheet 8, and a CPU 14 for spraying control is provided therein.
Etc. are provided. 12 is a battery, 15 is a main power switch, 35 is a power relay, and 36 is an engine starter.

FIG. 2 shows the flow of the chemical solution. The chemical solution sent out from the control tank 9 containing the chemical solution therein through the switching cock 16 and the filter 17 by the control pump 18 is transferred in three directions. It is branched and supplied to each of three divided booms at the center, left side and right side. On the front side of each boom, opening / closing cocks 21a, 21b, 21c
Is provided. The flow rate of the chemical solution supplied to each boom is controlled by a flow rate adjusting actuator 20 in a flow rate control valve 23, and at the same time, the amount of the chemical solution released to the control tank 9 is adjusted. In addition, a part of the chemical solution discharged from the control pump 18 is reduced as stirring water from the stirring nozzle 26 to the bottom of the control tank 9, and agitates and mixes the drug settling at the bottom of the aqueous solution. 19
Is an air chamber, 22 is a pressure sensor, and 24 and 25 are flow rate sensors.

FIG. 3 shows the configuration near the instrument panel 7 in the driver's seat. The instrument panel 7 includes a manual steering switch 7a,
7b, 7c, an automatic changeover switch 7d, a meter 7e, and a display panel 7f are arranged. Manual steering switches 7a, 7b,
By switching of 7c, the rear wheel steering (RWS), the front wheel steering (FWS), and the front and rear four-wheel steering (4WS) are manually switched. The automatic changeover switch 7d performs rear wheel steering during backward movement during non-working, front wheel steering during forward working, and forward and backward four-wheel steering during non-working, and automatically switches these.
27 is a main transmission lever.

FIG. 4 shows an operation panel 13 for spraying a chemical solution provided on one of the left and right sides of the driver's seat. The display changeover switch 28 is turned on when pressed, and each time the switch is pressed, the flow rate, the pressure and the total flow rate are repeatedly displayed on the display unit 29. The spray width switch 30 selects whether the spray width is 8 m or 10 m, for example, and displays the selected spray width with a lamp. The customary small amount switch 31 selects whether the amount of spraying is a customary amount or a small amount, displays the selected amount of spraying with a lamp, and also displays the numerical value on the display unit 29. This numerical value can be changed by operating the increase / decrease switch 33 described below. The automatic manual switch 32 selects whether to perform automatic spraying (flow rate control) or manual spraying (fixed spray amount). In the case of automatic, the automatic lamp is turned on. The flow / pressure increase / decrease switch 33 is used for fine adjustment of increase / decrease from a fixed spray amount when spraying is performed manually or automatically. Reset switch 3
In step 4, the accumulated flow rate is reset, the display on the display unit 29 is set to 0, and the accumulated flow is displayed until the next reset.

FIG. 5 is a block diagram of a spray control device when a chemical solution is sprayed by connecting a boom sprayer. An input interface 1 is provided on the input side of the CPU 14 for spraying control.
4a, a spray amount setting switch 31, a display changeover switch 28, a spray width setting switch 30, a medicine flow sensor 2
5, the pressure sensor 22, the vehicle speed sensor 41, the left, center, and right nozzle sensors 42, 43, and 44 are connected, and the power supply relay 46 is connected to the output side via the output interface 14b.
The flow control actuator 20, the flow control valve 23, and the alarm buzzer 45 are connected. Also, a RAM is provided in the CPU 14.
(Random access memory) and the CPU 14
And a display device 29 and a nonvolatile memory 40 such as an EEPROM. Then, a signal interlocked with the main power switch 15 is input to the input side of the CPU 14.

In the present invention, the control setting value and the work amount are stored in the nonvolatile memory 40,
When the main power switch 15 is turned off, the control device CPU 14 itself can turn off the power. In such a configuration, the power of the CPU 14 itself is turned on by the main power switch 15, and the CPU 14 turns on the self-holding relay. During the operation, the data in the RAM in the CPU 14 is rewritten. Then, when the main power switch 15 is turned off and the engine 5 is stopped, the CPU 14 detects this and writes data such as control setting values and work amount into the nonvolatile memory 40 only at that time, and then turns off the self-holding relay. The CPU 14 is turned off. As described above, the number of times of rewriting of the nonvolatile memory can be greatly reduced, so that the nonvolatile memory can be used even when the main power is turned off, and it is not necessary to consider a problem due to the conventional battery replacement or discharge.

In the above configuration, the display items (see FIG. 4) on the operation panel 13 before the main power is turned off are stored in the nonvolatile memory 40, and the stored items are displayed next time the power is turned on. In other words, by displaying the last used item, the operator can immediately see the display item that the operator wants to view, so that the display switch 28 does not need to be switched at power-on, and the operability is improved.

In the present invention, the vehicle speed sensor 41 is normally used.
The spraying flow rate is controlled so that the spraying amount is set in accordance with the detection value of the flow rate sensor 25 and the flow rate. The spray flow is controlled by the flow control valve 23. For example, when the spraying amount is set to 25 liter / 10a, the spraying amount is calculated every predetermined time from the detection values of the vehicle speed sensor 41 and the flow rate sensor 25, and is compared with the set value to control the flow control valve 23. At the same time, the sensor value of the pressure sensor 22 provided in the middle of the pipe at the predetermined spraying amount is stored in the nonvolatile memory 40. And
When it is determined that the flow rate sensor 25 has failed, for example, when the flow rate is abnormally small or large relative to the pressure, the alarm buzzer 45 is issued as a flow rate sensor abnormality. As described above, when it is determined that the flow rate sensor 25 has failed during the spraying operation, the pressure is switched to the pressure spraying that controls the spraying amount based on the spraying pressure by the pressure sensor 22. This switching may be performed automatically, or may be performed by an operator operating a manual switch after the alarm buzzer 45 sounds. As described above, even if the flow sensor fails, control by the pressure sensor is enabled, so that the spraying operation does not need to be stopped.

As described above, when the flow rate control is switched to the pressure control, the display unit 29 (see FIG. 4) of the operation panel is automatically switched from the flow rate display to the pressure display. For example, as shown in FIG. 6, the spraying amount (liter) per unit area (10 ares) is displayed during the flow rate control, but when the pressure control is performed, the pressure is automatically displayed (display unit is kg / square centimeter). Switch Thus, the operability is improved by automatically switching the display.

Further, as described above, when controlling the spraying amount by the flow rate control, since the flow control valve is operated after the start of the running in the past, the spraying amount set at the start of the work may be slightly reduced. It took time, and the spray amount accuracy at the start of spraying was poor. As shown in FIG. 2, the flow control valve is a valve tip 20 a of the flow control actuator 20.
Is made to protrude and retract inside the pipe to adjust the opening. Then, a potentiometer is attached to this flow control valve to detect the opening of the valve, and when the set spray amount is set by the spray amount setting switch 31, the opening of the flow control valve is set in advance near the expected opening. By setting, it is possible to instantaneously respond to the start of spraying and control the spraying amount to a predetermined amount, thereby improving work accuracy.

When the spraying amount is set by the spraying amount setting switch 31 and the spraying is started, the relationship between the spraying pressure and the spraying flow rate is determined by the spraying amount setting value (conventional / small) and the number of nozzles used (spraying width). If the pressure curve or the flow rate curve (corresponding to the boom width) and the vehicle speed is outside the range of the normal relationship determined in advance (see FIGS. 7A and 7B), the alarm buzzer 45 sounds and the operator Notify the abnormality. This allows the operator to be quickly notified when, for example, conventional spraying is selected while switching to the small amount spraying nozzle or vice versa. Also, it is possible to determine the wear and clogging of the nozzle.

[0016]

As described above in detail, according to the present invention, there is provided a riding management machine which allows a work machine such as a boom sprayer to be connected to the rear of the machine, and the control device itself is turned off when the main power switch is turned off. Has a mechanism that can turn off the power of the control device, rewrites the memory in the control device during work, and after the main power switch is turned off, the control device itself rewrites control setting values and work amount etc. to non-volatile memory Since the power supply to the control unit is cut off, the number of times of rewriting of the non-volatile memory can be greatly reduced, the non-volatile memory can be used even when the main power supply is turned off, and it is necessary to consider the problems caused by conventional battery replacement and discharge. There is no. Further, the present invention has a configuration in which display items before the power is turned off are displayed first at the next power-on, so that the display items that the operator wants to see can be seen immediately at the time of power-on. The operability is improved without having to switch each switch.

The present invention further includes a pressure sensor for detecting a spraying pressure when the spraying control is performed so that the spraying amount is set according to a detection value of a flow rate sensor for detecting a vehicle speed and a spraying flow rate. When the flow rate sensor fails, it is possible to switch to the spraying amount control by pressure, so that even if the flow rate sensor fails, the spraying amount control by the pressure sensor can be performed and the spraying operation can be continued. In addition, the present invention, when the spray amount is set, by providing a means for issuing an alarm when the nozzle of the boom does not correspond to the set spray amount,
An operator can be notified of a nozzle setting error or the like.

[Brief description of the drawings]

FIG. 1 is an overall side view of a passenger management machine according to the present invention.

FIG. 2 is a flow layout diagram of a chemical solution.

FIG. 3 is a configuration diagram near an instrument panel in a driver's seat.

FIG. 4 is a layout view of an operation panel for spraying a chemical solution.

FIG. 5 is a block diagram of a chemical solution spraying control.

FIG. 6 is a diagram illustrating display switching of an operation panel.

FIG. 7 is a graph showing an example of a pressure curve and a flow rate curve.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ride control machine Front and rear wheels 5 Engine 6 Steering handle 7 Instrument panel 8 Seat 9 Control tank 10 Hitch part 11 Transmission case 12 Battery 13 Operation panel 14 Spray control CPU 15 Main power switch 18 Control pump 20 Flow control actuator 22 Pressure sensor 23 Flow control valve 24, 25 Flow sensor 28 Display switch 29 Display unit 40 Non-volatile memory 45 Alarm buzzer

Claims (4)

[Claims] 1. A passenger management machine in which front and rear wheels have substantially the same diameter, front and rear wheels are independently driven, front and rear four-wheel steering is enabled, and a working machine such as a boom sprayer can be connected to the front or rear of the body. In addition, the control unit is configured to store the set values for control and the amount of work in a non-volatile memory, and when the main power switch is turned off, a mechanism is provided so that the control device itself can turn off the power of the control device. And the control device itself rewrites the control setting value and the work amount in the non-volatile memory when the main power switch is turned off, and then turns off the power of the control device. Machine. 2. The passenger management machine according to claim 1, wherein display items before the power is turned off are displayed first when the power is turned on next time. 3. The front and rear wheels have substantially the same diameter, the front and rear wheels are independently driven, and the front and rear four wheels can be steered. A work machine such as a boom sprayer can be connected to the front or rear of the body, and the vehicle speed and the spray flow rate can be adjusted. A passenger management machine that performs spraying control so as to have a spraying amount set according to a detection value of a flow sensor that detects a spraying pressure, a pressure sensor that detects a spraying pressure, and when the flow sensor fails, the pressure A riding management machine characterized in that it can be switched to spraying amount control. The front and rear wheels have substantially the same diameter, the front and rear wheels are independently driven, and the front and rear four wheels can be steered. In the riding management machine which performs the spraying control so that the spraying amount is set, when the spraying amount is set, when the nozzle of the boom does not correspond to the set spraying amount, a means for issuing an alarm is provided. Machine.