JPS6259710A - Scattering controller of liquid scattering vehicle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a spraying control device for a liquid spraying vehicle.

(Prior art) Conventionally, as a liquid spraying vehicle for spraying water or anti-freeze chemical liquid on roads, there have been disclosed Japanese Patent Publication No. 59-51866 and Japanese Patent Application Laid-open No. 57-1.
The one described in Japanese Patent No. 94068 and the like is known.

(Problem to be Solved by the Invention) These liquid spray vehicles are configured to control the driving means of the liquid spray pump so that the amount of spray per unit area of birds is uniform in synchronization with the vehicle speed. .

However, when the liquid spraying vehicle arrives at the spraying site, the operator may make a mistake in the spraying operation or the spraying start position, resulting in the liquid (chemical) being wasted or not spraying the necessary areas. There was a problem.

The present invention has been made in view of the above points, and provides a spraying control device for a liquid spraying vehicle that can display a warning to one operator when the liquid spraying vehicle arrives at a preset spraying start position. It is.

(Technical Means for Solving the Problem) The present invention provides a position signal from a detection means for detecting the running position of a vehicle and a spraying start position from an external input/output device into which at least the spraying start position is set and inputted in advance. It is equipped with a control device that receives signals and performs arithmetic processing, and is configured to display an alarm when a preset spraying start position is reached.

(Example) In Fig. 1, 1 is a liquid spraying vehicle that sprays water, anti-freezing agent, etc. on the road, and a liquid tank 4 is mounted on the chassis 2 of the vehicle, located behind the driver's cab 3. ing.

The liquid in the liquid tank 4 is sprayed by a sprinkler pump 5, which is connected to a driving engine 6, a power take-off device (flywheel PTO
) 7. A flow rate control device 8I, which will be described later, is configured to be driven via a drive means 9 that can control the discharge amount.

The liquid tank 4 is divided into a plurality of sections via a partition wall 4a, and each chamber is provided with a plurality of water level detectors 10 for detecting the water level.

Further, rotation speed detection R11 and R12 are provided in order to detect the rotation speed of the driving engine 6 and the liquid spray pump 5 and take in the rotation speed signals as a vehicle speed signal and a discharge amount signal.

On the other hand, an operation section 13 is arranged inside the driver's cab 3.
As will be described later, various operation switches are installed, and operations of the operation switches can be output as operation signals.

Note that a display device 14 in which various pilot lamps, buzzers, etc. are arranged integrally with or in close proximity to the operation section 13 is provided.
is installed.

Various operation signals from the aforementioned operation unit 13, water level signals from the water level detector 10, etc., rotation speed detectors 11, 12, etc.
The vehicle speed signal and the discharge amount No. 43 are input to the control device 15 placed in the driver's cab 3 or at a suitable position at the rear of the driver's cab 3, and the control device 15 performs calculations based on these various signals. After processing, it supplies a control signal to the flow rate control device 8, a display signal to the display device 14, and an actuation signal to a solenoid valve drive circuit, which will be described later.

Further, the liquid sprinkling piping system and the driving means will be explained with reference to FIG. 2. On the suction side of the liquid sprinkling pump 5, a three-way cock 16 is installed from the front lower part of the liquid tank 4. −
17 is connected to the pipe, and a liquid spray pipe 18 is connected to the discharge side thereof.

This liquid spray pipe 18 is connected to the rear of the liquid tank 4 and branched to three liquid spray nozzles 19a, 19b, and 19c, and each branch pipe is provided with a solenoid valve 20a, 20b, and 20c.

Roughly speaking, a stirring pipe 21 for stirring the inside of the liquid tank 4 is connected to the liquid dispersion pipe 18 via a three-way cock 22.
A discharge pipe 24 equipped with a three-way cock 23 is branched and connected.

Note that an intake pipe 25 is connected to the three-way pot 16, and each of the plurality of chambers is communicated via a bottom valve 26.

By the way, the driving means 9 is basically composed of a variable discharge amount pump P and a constant displacement hydraulic motor M, and the swash plate tilt angle of the variable discharge amount pump P is determined by a pair of cylinders C.
It is controlled by y. An electromagnetic switching valve V serving as a flow rate control device whose position is controlled by a current value is connected to this cylinder CY.

That is, when the attraction force generated by the coil of the electromagnetic switching valve V, which is a flow rate control device, becomes larger or smaller than the spring force due to the current supplied to the coil, the pressure oil from the supply pump Pc is diverted to one cylinder cy. The hydraulic oil is supplied to the hydraulic motor M to change the tilt angle of the swash plate, and the hydraulic oil corresponding to the tilt angle is supplied to the hydraulic motor M.

Then, as the swash plate tilt angle changes, an attempt is made to return T' and the magnetic switching valve V to the neutral position via the link mechanism, but as long as the current is supplied, the tilt angle corresponds to the current. The angle of rotation is maintained.

Next, the configuration of the control device 15 and the input/output devices including the operation section 13 or the display device 14 will be explained with reference to FIG. 3. First, the control device (information processing device) 15 uses a microcomputer, Device (CPU) 30
, a memory 31, an input circuit 32, and an output circuit 33.

The central processing unit 30 operates on the input signal from the input circuit 32 according to a predetermined program stored in the memory 31, and supplies the output signal to the output circuit 33.

The input circuit 32 includes an interface 34 and a counter 3
5,36.

The interface 34 includes various operation switches of the operation unit 13, such as a lane setting switch 38 for setting the spraying area to 2 or 3 lanes, a watering amount setting switch (5 levels) 39 for setting the amount of watering, and an automatic Automatic/manual switch 40 for selecting whether to spray or manually
Various operation signals, water level signals from the water level detector (4 stages) 10 in the liquid tank 4, solenoid valves 20a, 20b, 20c
Operation signals from the operation switches 41a, 41b, and 41c for opening and closing, a start signal for the start switch 42, and a mode signal for the mode selection switch 43 for selecting the dispersion mode, input mode, etc. are input, respectively.

Further, the counter 35 receives and counts the vehicle speed signal from the rotation speed detector 11, and the counter 36 receives and counts the discharge amount signal from the rotation speed detector 12.The counter 36 receives and counts the discharge amount signal from the rotation speed detector 12. The first output from the counters 35 and 36 is output to the CPU 30 via the interface 34.

The output circuit 33 includes an interface 44, a digital-to-analog conversion interface 45, a drive circuit 46, and a changeover switch 47.

The interface 44 outputs an actuation signal to the display device 14 or the electromagnetic valve drive circuit 48 via the drive circuit 46 based on the output signal of the CPtJ 30.

Further, the digital-to-analog conversion interface 45 outputs a predetermined current to the I&amount control device 8 via the changeover switch 47.

Here, when the automatic/manual changeover switch 40 is turned to the automatic side, the changeover switch 7
When the analog conversion interface 45 and the flow rate control device 8 are connected and the automatic/manual changeover switch 40 is set to the manual side, the manual setting dial 4 of the operation unit 13 is connected.
9 and the flow rate control device 8.

Further, the display device 14 is used to display malfunctions based on self-diagnosis, and includes a water level indicator 50 that displays the water level of the liquid tank 4, and a rotation speed indicator 51 that numerically displays the rotation speed of the sprinkler pump 5. If the synchronization between the vehicle speed and the sprinkler pump is outside the setting error range, or if the rotation speed output of the sprinkler pump 5 cannot be obtained as an operation signal regardless of the supply of the command value,
A notification display 52 is provided that detects when a CPU abnormality or voltage abnormality occurs or when the spraying start position is reached and displays an alarm tK.

Note that 53 is a detection device for detecting that the IHI valves 20a, 20b, and 20C are opened, and is composed of an electric contact such as a limit switch.

Further, an external input/output device 54 is connected to the central processing unit 30 via a data transmission circuit 37. Specifically, this external input/output device 54 is a data recorder, a portable computer, etc. .

The external input/output device 54 is preset and inputted from teaching or a road map as a sprinkling start position and a sprinkling end position as a sprinkling signal, and these sprinkling signals are input by a mode selection switch. - By switching the Sochi 43 to the input mode, the data is stored in the memory 31 via the data transfer circuit 37 and the CPU 30.

Next, the operation of the above-mentioned device will be explained based on FIG. By switching to the input mode, the data is stored in the memory 31 of the control device 15 via the data transmission circuit 37.

Next, after switching the automatic/manual changeover switch 40 to the automatic side, the start switch 42 is turned on to start the work.

That is, in step 60 it is determined whether or not the starting switch 42 is turned on, and if it is confirmed that it is turned on, then in step 61 it is determined whether or not it is at the drink starting position. This spraying start position is counted based on the vehicle speed signal from the rotational speed detector 11, and the running position is calculated by, for example, adding the tire diameter and the tire diameter to the defreezing signal.

As a result, if the distance from the base matches the spraying start position, it is output to step 62 and the alarm indicator 52 of the display device 14
lights up.

When the indicator 52 lights up, the process moves to step 63, and in step 63, the solenoid valves 20 a , 20 b , 20
It is determined based on the detection signal from the detection device 53 whether or not c is open. When the solenoid valve 20 is closed, the output is outputted to the solenoid valve drive circuit 48 in step 64, and the solenoid valve 20 is closed.
Open a, 20b, and 20c.

When the solenoid valves 20a, 20b, 20c are opened in step 64, an output is sent to step 65, and the stellar switch 39
When set to an appropriate value, those operation signals are supplied to the CPU 30 via the interface 34. As a result, the rotation speed of the sprinkler pump 5 is set based on the vehicle speed signal from the rotation speed detector 11, and the set value and the rotation speed of the sprinkler pump 5 are set.
One value from the rotation speed detector 12 is compared with the one value from the rotation speed sensor 12, and outputted to the ill control device 8 via the digital-to-analog conversion interface 45 so that they are balanced.

Thereby, the swash plate tilt angle of the variable discharge amount pump P is changed, and the amount of liquid supplied by the liquid spray pump 5 is controlled.

That is, when the vehicle speed is high, the supply amount is large, and when the vehicle speed is slow, the supply amount is regulated to be small, and the set scattering amount during the set spraying is always controlled so as to be constant per unit area.

In this way, the set amount of water is sprayed in synchronization with the vehicle speed until the spraying end position. Thereafter, when it is determined in step 66 that the preset sprinkling end position has been reached based on the vehicle speed signal from the rotational speed detector 11, the alarm indicator 52 of the display device 14 is turned on in step 67.

When the indicator 52 lights up, the process moves to step 68, and in step 68, the solenoid valve 20a is opened.

20b and 20c are closed. Next, in step 69, a dispersion stop F process is performed.

The water sprinkling stop F process in step 69 is performed by controlling the water spray amount control device 8 to set the pump tilt angle to 0, that is, to set the water spray amount setting switch 39 to O.

Thereafter, such processing is continued until the start switch 42 is turned off in step 70, for example, for each of a plurality of set sections in a fixed route, until the liquid sprinkling process is completed. Turn the start switch 42 to O
The program ends by switching to FF.

In this embodiment, the solenoid valve was automatically controlled to open, but the operator may open the valve himself depending on the road environment on that day.

In addition, in this embodiment, the running position of the vehicle is detected by the rotation speed detector 11.
Although the current position is detected using a navigator that recognizes the current position using a combination of an azimuth sensor, an acceleration sensor, a rotation speed sensor, etc., the detection may also be performed.

Furthermore, it is also possible to store map information in advance in an external input/output device, display it on a CRT screen, and input the sprinkling start position and sprinkling end position using a light pen or the like.

(Effects) As described above, according to the great invention, since the starting position of the liquid dispersion operation is reliably grasped, the medicine can be dispersed appropriately and from a desired position.

[Brief explanation of drawings]

The drawings illustrate an embodiment of the great invention; Fig. 1 is an overall configuration diagram of a liquid spraying vehicle, Fig. 2 is an explanatory diagram showing a piping system and drive system, and Fig. 3 is a configuration of a control device and a control device. FIG. 4 is a block diagram illustrating the relationship between the input device and the input device. 4. Fist/Liquid tank, 5. Liquid pump, 8. Flow rate control means 9. Drive means, 11° 12.. Rotation speed detector, 13.. Fist operation unit, 14. Φ display device,
15---Control device, 54・φ・External input/output device

Claims (1)

[Claims] (1) In a liquid spraying vehicle equipped with a liquid spraying pump that supplies liquid in a liquid tank mounted on a vehicle body to a liquid spraying nozzle, and a driving means for driving the liquid spraying pump, the traveling position of the vehicle is determined. a detection means for detecting, an external input/output device into which at least a dispersion start position is set and inputted in advance, and a control in which a position signal from the detection means and a dispersion start position signal from the external input/output device are inputted and subjected to arithmetic processing. 1. A spraying control device for a liquid spraying vehicle, characterized in that the spraying control device includes a device, and displays an alarm when the spraying start position set by the detection means is reached.