JP6498554B2 - Watering wheel - Google Patents

Description

  The present invention relates to a water truck.

  Conventionally, a watering wheel is used to spray water on a road such as an expressway. The water truck spreads water in the tank while traveling in a predetermined watering section. Patent Document 1 discloses a water truck capable of specifying a current position using a kilometer post and a GPS (Global Positioning System) provided on a road.

  In a conventional watering vehicle, for example, watering work is performed as follows. That is, in the initial section, watering is performed with a constant watering amount, and after the watering work has progressed to some extent, the worker changes the watering amount in consideration of the remaining amount of water in the tank. At that time, the worker estimates the distance of the remaining section along with the remaining amount of water in the tank, and based on experience and intuition to use up all the water in the tank when traveling the remaining section at a constant vehicle speed. The amount of watering after the change was determined.

JP2011-8383A

  However, in the above-mentioned conventional watering work, since the watering amount is changed based on the experience and intuition of the worker, the watering amount after the change may be too much or too little. However, if the watering amount after the change is too large, the water in the tank will be used up before reaching the end point of the watering section, and watering of some sections cannot be performed. On the other hand, if the amount of sprinkling after the change is too small, water will remain in the tank when the end point is reached, and the water in the tank cannot be used up.

  Here, it is conceivable to frequently change the watering amount so that the water in the tank can be used up. However, frequent changes in the amount of watering are burdensome by workers.

  This invention is made in view of this point, The objective is to provide the water truck which can use the water of a tank without excess and deficiency, without putting a burden on an operator in the watering work of a predetermined area. .

  A watering vehicle according to the present invention is configured to be capable of adjusting water, a watering tank, a watering device that sprays water in the tank, a control device that controls the watering amount of the watering device, A water amount sensor for detecting the amount of water in the tank, a GPS receiver for receiving a GPS signal, a watering course database in which a plurality of preset watering courses are stored, and operated by an operator, out of the plurality of watering courses A watering course selecting device for selecting one of them. The control device specifies the distance of the remaining watering section from the current position specified from the GPS signal received by the GPS receiver and the position of the end point of the watering course selected by the watering course selection device. A remaining section specifying unit, a water amount of the tank detected by the water amount sensor, and a distance of the remaining watering section specified by the remaining section specifying unit. And a water amount control unit.

  According to the watering vehicle, since the distance of the remaining watering section is specified from the current position specified from the GPS signal and the position of the end point of the selected watering course, the distance of the remaining watering section is accurately specified. can do. Then, the watering amount of the watering device is controlled based on the water amount of the tank and the distance of the remaining watering section. Therefore, it is possible to avoid using up the water in the tank before reaching the end point of the watering section or remaining in the tank when the end point is reached. Moreover, since it is not necessary for the worker to change the watering amount by himself, the worker is not burdened. Therefore, according to the watering vehicle, the water in the tank can be used without excess or deficiency without placing a burden on the worker.

  According to a preferred aspect of the present invention, the water spray amount control unit is configured to control the water spray amount of the water sprinkler so that the water spray amount per unit travel distance is constant.

  In the watering operation, it is preferable to spray water uniformly. According to the said aspect, water can be uniformly spread | dispersed in the remaining watering area.

  According to another preferable aspect of the present invention, a vehicle speed sensor for detecting a vehicle speed is provided. The water sprinkling amount control unit is configured to control the water sprinkling device so that the water sprinkling amount per unit time increases as the vehicle speed increases.

  According to the above aspect, the watering amount per unit time is automatically increased when the vehicle speed is high, and conversely, when the vehicle speed is low, the watering amount per unit time is automatically reduced. Thereby, the amount of water sprayed per unit travel distance is kept constant, and water can be sprayed uniformly.

  According to another preferable aspect of the present invention, an input device for inputting an instruction to start control is provided. The remaining section specifying unit specifies the distance of the remaining watering section when the input device is input, and the watering amount control unit is configured to specify the remaining watering distance when the remaining section specifying unit specifies the remaining watering distance. It is configured to start controlling the amount of water sprayed.

  According to the said aspect, the user can determine freely the point which starts the said control, and the convenience improves.

  According to another preferable aspect of the present invention, the watering course includes a first watering section and a second watering section adjacent to the first watering section across the non-watering section. After the remaining section specifying unit and the sprinkling amount control unit travel through the first sprinkling section, when the input device is input in the non-sprinkling section, the remaining sprinkling is set to the start point of the second sprinkling section. The start point of the section.

  The watering section of the watering course is not necessarily a single continuous section, and may be a plurality of separated sections. According to the said aspect, when the start of the said control is instruct | indicated in a non-watering area, let the starting point of a 2nd watering area be a starting point of the remaining watering areas. Therefore, even when the start of the control is instructed in the non-watering section, the water in the tank can be used without excess or deficiency in the watering section.

  ADVANTAGE OF THE INVENTION According to this invention, in the watering operation | work of a predetermined area, the watering vehicle which can use the water of a tank without excess and deficiency without putting a burden on an operator can be provided.

It is a side view of a water truck according to an embodiment of the present invention. It is a block diagram which shows the structure of the watering apparatus of the said water truck. It is a block diagram which shows the structure of the control apparatus of the said water truck, and various apparatuses. (A) And (b) is a figure which shows the example of the watering course using a kilopost. (A) And (b) is a figure which shows the example of the remaining watering area specified by the remaining area specific | specification part.

  Hereinafter, the water truck 1 which concerns on one Embodiment of this invention is demonstrated, referring drawings. As shown in FIG. 1, the watering wheel 1 includes a cab 2, a tank 3 that stores water, and a watering device 4 that sprays water from the tank 3.

  The water sprinkler 4 has a front nozzle 11 for spraying water from the front of the vehicle and a rear nozzle 12 for spraying water from the rear of the vehicle. As shown in FIG. 2, the watering device 4 includes a pipe 6 that connects the tank 3, the front nozzle 11, and the rear nozzle 12, a pump 5 that sends water from the tank 3 to the front nozzle 11 and the rear nozzle 12 through the pipe 6, have. A valve 13 is provided between the pump 5 and the front nozzle 11, and a valve 14 is provided between the pump 5 and the rear nozzle 12. The pump 5 may be a pump capable of adjusting a liquid feeding amount, and the valve 13 and the valve 14 may be valves capable of adjusting a flow rate. The watering device 4 is configured to be able to adjust the amount of water sprayed from the front nozzle 11 and the rear nozzle 12, that is, the amount of watering. The watering device 4 may be configured to be able to adjust the amount of water sprayed by adjusting the amount of liquid delivered by the pump 5, and the amount of water sprayed can be adjusted by adjusting the flow rate of water with the valves 13 and 14. It may be configured. In the present embodiment, the pump 5 is a centrifugal pump, and is configured such that its rotation speed can be adjusted. The valves 13 and 14 are constituted by valves that can be switched between an open state and a closed state. However, the said structure of the watering apparatus 4 is only an example, and the structure of the watering apparatus 4 is not limited at all.

  As shown in FIG. 3, the water truck 1 includes a GPS receiver 15 that receives GPS signals, a vehicle position detection device 16 that acquires the current position of the water truck 1 from the GPS signals received by the GPS receiver 15, A vehicle speed sensor 17 that detects the vehicle speed of the car 1, an engine speed sensor 18 that detects the speed of an engine (not shown) of the water truck 1, a water level sensor 19 that detects the water level of the tank 3, and a pump 5 A pump rotation speed sensor 20 that detects the rotation speed, a valve state detection sensor 21 that detects the open / closed state of the valves 13 and 14, a watering course selection device 22, a control start switch 23, and a display device 28 are provided. Yes. In the present embodiment, the amount of water stored in the tank 3 (water amount) is detected based on the water level of the tank 3. The water level sensor 19 is an example of a water amount sensor that detects the amount of water in the tank 3. However, the water amount sensor is not limited to the water level sensor 19. The water amount sensor may be, for example, a sensor that detects the weight of water in the tank 3. The display device 28 is a display provided in the cab 2, for example. The watering course selection device 22 is operated by an operator when selecting any one watering course from a plurality of predetermined watering courses stored in the watering course database 26. The worker is a person who operates the watering device 4, and is, for example, a driver sitting in a driver's seat (not shown) in the cab 2 or another passenger sitting in a passenger seat (not shown). .

  The water truck 1 includes a kilometer post database 27 in which information on the positions of a plurality of kilometer posts is stored. The watering course may be set using a kilometer post. For example, as shown in FIG. 4 (a), a kilometer post KPs as a starting point and a kilopost KPe as an end point may be set as a watering course, and a section between these kiloposts KPs and KPe may be set as a watering section. In this case, the water truck 1 starts watering when passing the start point kilopost KPs, and ends watering when it reaches the end point kilopost KPe.

  Moreover, the watering course may include a watering section where watering is performed and a non-watering section where watering is not performed. For example, as shown in FIG. 4 (b), the watering course includes a first watering section S1 from the first starting point kilopost KPs1 to the first end point kilopost KPe1, a non-watering section T in which watering is not performed, The second watering section S2 from the starting point kilopost KPs2 to the second end point kilopost KPe2 may be used. Thus, the watering course may include a plurality of watering sections (not limited to two but may be three or more) that are separated from each other.

  In addition, said watering course is an illustration and the setting method of a watering course is not limited at all. The watering course is not necessarily limited to the one using the kilometer post. That is, at least one of the start point and the end point of the watering course may not be the installation position of the kilopost.

  As shown in FIG. 3, the water truck 1 includes a control device 25. The control device 25 can control the liquid feeding amount of the pump 5 by adjusting the rotation speed of the pump 5. Further, the control device 25 can control opening and closing of the valve 13 and the valve 14. The control device 25 opens the valve 13 and the valve 14 when starting watering, and closes the valve 13 and the valve 14 when finishing watering. The control device 25 can control the amount of water sprayed by the water spray device 4 by controlling the amount of liquid fed by the pump 5 and the opening and closing of the valves 13 and 14. In particular, in the present embodiment, the control device 25 is configured to perform watering control that uses up the water in the tank 3 at the end point of the watering course. The water truck 1 is provided with a control start switch 23 that is operated by an operator and instructs the start of the watering control. Although the arrangement and configuration of the control start switch 23 are not limited at all, in the present embodiment, the control start switch 23 is configured by a switch (not shown) arranged in the cab 2. The control start switch 23 is provided, for example, on the operation panel in front of the driver's seat.

  Although the specific structure of the control apparatus 25 is not specifically limited, In this embodiment, it is comprised with the microcomputer which has CPU, ROM, and RAM. The control device 25 includes a remaining section specifying unit 31 and a sprinkling amount control unit 32. The remaining section specifying unit 31 determines the remaining watering course from the current position of the water truck 1 specified from the GPS signal by the vehicle position detection device 16 and the position of the end point of the watering course selected by the watering course selection device 22. Identify the distance of the watering section. The sprinkling amount control unit 32 determines the sprinkling amount of the sprinkler 4 based on the remaining amount of water in the tank 3 detected by the water level sensor 19 and the distance of the remaining sprinkling section specified by the remaining section specifying unit 31. Control. The remaining section specifying unit 31 and the sprinkling amount control unit 32 may be configured by hardware, and may be functionally realized by the computer executing a predetermined computer program.

  At the beginning of the watering course, the worker performs watering, for example, with a predetermined amount of watering. When the worker inputs the control start switch 23 in the middle of the watering course, watering control is started. For example, as shown in FIG. 5A, when a watering course for continuously watering from the start point kilopost KPs to the end point kilopost KPe is selected, the control start switch 23 is input at a point Pm on the way. The remaining section specifying unit 31 calculates the distance D1 using the remaining watering section from the point Pm to the end point kilopost KPe. As shown in FIG.5 (b), when the watering course comprised by the 1st watering area S1, the non-watering area T, and the 2nd watering area S2 is selected, the middle of the non-watering area T When the control start switch 23 is input at the point Pm, the remaining section specifying unit 31 calculates the distance D2 using the watering section after the point Pm (that is, the second watering section S2) as the remaining watering section. In addition, when a plurality of watering sections are set after the point where the control start switch 23 is input, the sum of the plurality of watering sections is regarded as the remaining watering section, and the total of the plurality of watering sections is calculated. A distance is calculated.

  The sprinkling amount control unit 32 controls the sprinkler 4 so that the water in the tank 3 is used up and down in the remaining watering section. In the present embodiment, the sprinkling amount control unit 32 controls the sprinkling amount so that the sprinkling amount per unit travel distance of the sprinkler vehicle 1 is constant so that water is evenly sprayed in the remaining sprinkling sections. That is, when the amount of water in the tank 3 is Q [l] and the distance of the remaining watering section is L [m], the watering amount control unit 32 sets the watering amount of the watering device 4 to Q / L [l / m]. The term “constant” mentioned here is not necessarily limited to a constant in a strict sense, but includes a case where it can be regarded as substantially constant. That is, even if there is a slight variation (for example, a variation of ± 10%), a case where it can be regarded as substantially constant is also included.

  By the way, the driver usually runs the water truck 1 at a constant speed as much as possible, but the watering section includes, for example, an uphill and a downhill, and the vehicle speed of the water truck 1 is not necessarily constant. Therefore, even if the watering amount [l / s] per unit time is kept constant, the watering amount [l / m] per unit traveling distance is not necessarily constant. Therefore, the watering amount control unit 32 controls the watering amount per unit time of the watering device 4 according to the vehicle speed detected by the vehicle speed sensor 17. Specifically, the watering amount control unit 32 controls the watering device 4 so that the watering amount per unit time increases as the vehicle speed increases. Thereby, the watering amount per unit travel distance is kept constant.

  Information such as the watering course, the current position of the watering vehicle 1, the remaining amount of water in the tank 3, the vehicle speed, and the amount of watering per unit time of the watering device 4 is displayed on the display device 28 in real time. May be. Thereby, the worker can grasp | ascertain the condition of watering work exactly.

  As described above, according to the water truck 1 according to the present embodiment, from the current position of the water truck 1 specified from the GPS signal and the position of the end point of the water course stored in the water course database 26, the remaining Since the distance of the watering section is specified, the distance of the remaining watering sections can be specified accurately. Then, based on the remaining amount of water in the tank 3 and the distance of the remaining watering section, the watering amount of the watering device 4 is controlled. Therefore, according to the watering vehicle 1 according to the present embodiment, it is possible to avoid using up the water in the tank 3 before reaching the end point of the watering course or remaining in the tank 3 when the end point is reached. . Moreover, since the said watering control is automatically performed by the control apparatus 25, it is not necessary for an operator to change watering amount himself. Therefore, the burden on the worker can be reduced. Therefore, according to the water truck 1, the water of the tank 3 can be used without excess and deficiency, without putting a burden on an operator.

  Moreover, in the watering vehicle 1 which concerns on this embodiment, in the remaining watering area, the watering amount of the watering device 4 is controlled so that the watering amount per unit traveling distance becomes constant. Therefore, water can be uniformly sprayed in the remaining watering sections.

  Moreover, in the watering vehicle 1 which concerns on this embodiment, the watering apparatus 4 is controlled so that the amount of watering per unit time increases, so that vehicle speed is large. Therefore, when the vehicle speed is high, the amount of water sprayed per unit time automatically increases. Conversely, when the vehicle speed is low, the amount of water sprayed per unit time automatically decreases. Therefore, according to the water truck 1 according to the present embodiment, the amount of water sprayed per unit travel distance is kept constant even when the vehicle speed changes, and water can be sprayed uniformly.

  According to the water truck 1 according to the present embodiment, when the worker presses the control start switch 23, the watering control described above is started. Therefore, a worker can freely determine the point at which watering control is started, and convenience can be improved.

  As illustrated in FIG. 5B, the watering section is not necessarily a continuous section, and may be a plurality of spaced sections S1 and S2. According to the water truck 1 according to the present embodiment, when the control start switch 23 is pressed in the non-watering section T, the starting point KPs2 of the second watering section S2 is set as the starting point of the remaining watering section. Therefore, even when the start of the watering control is instructed in the non-watering section T, the water in the tank 3 can be used without excess or deficiency in the remaining watering section S2.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and can of course be implemented in various forms. In the said embodiment, although the water sprayer 1 was provided with the front nozzle 11 and the back nozzle 12, the means to spray water is not restricted to the front nozzle 11 and the back nozzle 12. The water truck 1 may be provided with other nozzles. Further, the front nozzle 11 or the rear nozzle 12 may not be provided.

  In the description of the embodiment, the valve 13 and the valve 14 are opened at the time of watering, and water is sprayed from both the front nozzle 11 and the rear nozzle 12. However, only one of the valve 13 and the valve 14 is opened and the front is opened. Water may be sprayed from the nozzle 11 or the rear nozzle 12.

  Although the number of the tanks 3 with which the water truck 1 is provided may be one, multiple may be sufficient. In this case, the amount of water in the tank 3 refers to the total amount of water in the plurality of tanks.

DESCRIPTION OF SYMBOLS 1 Watering wheel 2 Driver's cab 3 Tank 4 Watering device 5 Pump 11 Front nozzle 12 Rear nozzle 13, 14 Valve 15 GPS receiver 17 Vehicle speed sensor 19 Water level sensor (water quantity sensor)
22 Watering course selection device 23 Control start switch (input device)
25 Control device 26 Sprinkling course database 31 Remaining section specifying part 32 Sprinkling amount control part

Claims (5)

A tank containing water,
A watering device configured to adjust the amount of watering and spraying water from the tank;
A control device for controlling the watering amount of the watering device;
A water amount sensor for detecting the amount of water in the tank;
A GPS receiver for receiving GPS signals;
A watering course database storing a plurality of preset watering courses,
A watering course selection device that is operated by an operator and selects any one of the plurality of watering courses,
The controller is
A remaining section specifying unit that specifies the distance of the remaining watering section from the current position specified from the GPS signal received by the GPS receiver and the position of the end point of the watering course selected by the watering course selecting device. When,
A watering amount control unit that controls the watering amount of the watering device based on the water amount of the tank detected by the water amount sensor and the distance of the remaining watering section specified by the remaining section specifying unit;
Has a watering wheel.   The watering vehicle according to claim 1, wherein the watering amount control unit is configured to control a watering amount of the watering device so that a watering amount per unit travel distance is constant. It has a vehicle speed sensor that detects the vehicle speed,
The watering vehicle according to claim 2, wherein the watering amount control unit is configured to control the watering device such that the amount of watering per unit time increases as the vehicle speed increases. Provided with an input device to input an instruction to start control by a worker,
The remaining section specifying unit specifies the distance of the remaining watering section when the input device is input,
The said watering amount control part is comprised so that the control of the watering amount of the said watering apparatus may be started, if the said remaining area specific | specification part specifies the said remaining watering distance. The watering wheel described. The watering course includes a first watering section and a second watering section adjacent to the first watering section across the non-watering section,
After the remaining section specifying unit and the sprinkling amount control unit travel through the first sprinkling section, when the input device is input in the non-sprinkling section, the remaining sprinkling is set to the start point of the second sprinkling section. The watering vehicle according to claim 4, which is a start point of a section.

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