JP2003027898A - Device and method for controlling water spray - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable suppression of water usage. SOLUTION: A traffic-volume detecting sensor 2 detects the traffic volume of a road 1. A water-spray control device 22 determines whether the traffic volume of the road 1 exceeds a prescribed threshold value or not, according to traffic-volume information indicating the traffic volume, when notification of the traffic-volume information is provided by the sensor 2. The control device 22 makes water sprayed from water-spray parts 4-1 and 4-2 when determining that the traffic volume of the road 1 exceeds the prescribed threshold value, and stops water spray when determining that the traffic volume of the road 1 does not exceed the prescribed threshold value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sprinkling control apparatus and method for removing pollutants such as exhaust gas generated by a vehicle traveling on a road.

[0002]

2. Description of the Related Art In recent years, in the field of road traffic, the problem of air pollution caused by exhaust gas emitted from vehicles has been greatly highlighted, and at the same time, pollutants such as exhaust gas existing in the atmosphere are purified. Various systems have been proposed.

For example, Japanese Unexamined Patent Publication (Kokai) No. 11-90173 discloses that the inner wall of a tunnel is covered with a porous body and the porous body removes pollutants such as nitrogen oxides present in the atmosphere. There is.

Further, Japanese Unexamined Patent Publication No. 2000-45208 discloses that the surface of a road is covered with a photocatalyst such as titanium dioxide, and the photocatalytic reaction of titanium dioxide is used to remove pollutants discharged from a vehicle. Has been done.

[0005]

However, the systems disclosed in these publications each utilize a catalyst that adsorbs pollutants in the atmosphere, and among the pollutants present, the surface of the catalyst is used. Only those that come into contact with are removed. Therefore, there is a problem that the amount of contaminants that can be removed is not sufficient.

Further, in Japanese Patent Laid-Open No. 7-241432, water having a reduced redox voltage applied to it is sprayed on exhaust gas passing through a duct to remove harmful substances contained in the exhaust gas. A purification device is disclosed. Then, it is disclosed that the purification device is installed at, for example, an intersection.

However, even in a device for purifying the atmosphere passing through such a duct, the amount of the atmosphere that can be collected and purified is a small amount of the atmosphere existing around the intersection, and is described in the above-mentioned publication. Similar to the disclosed one, there was a problem that the amount of contaminants that could be removed was not sufficient.

The present invention has been made in view of such a situation, and it is possible to purify the atmosphere by spraying water according to the traffic volume of a road to remove substances existing in the atmosphere. Is.

[0009]

In order to solve the above-mentioned problems, the first sprinkling control device of the present invention provides a detection means for detecting the traffic volume on the road and a traffic volume detected by the detection means. Accordingly, a control means for controlling the spraying of water is provided.

This sprinkling control device is installed, for example, on a highway, a general road, or an intersection.

The detecting means is composed of, for example, the traffic volume detection sensor 2 of FIG. 1, and the controlling means is composed of, for example, the control section 31 of FIG.

The detecting means emits a detection signal such as infrared rays or ultrasonic waves, calculates the speed of the vehicle on the basis of the detection signal returned by the traveling vehicle and returned. Then, the detection means calculates the average speed of the vehicle that has passed in a predetermined period, and detects the traffic volume based on the calculation result (the calculation result is treated as the traffic volume).
Further, the road information center 21 as shown in FIG. 1 may detect the traffic volume based on the detection result of the detection means.

Further, the detecting means may count the number of vehicles passing through the road within a predetermined period and detect the traffic volume based on the number. in this way,
The detection means can detect the traffic volume by various methods. For example, the occupancy rate of the vehicle may be calculated based on a bird's-eye view image of the road, and the traffic volume may be detected based on the occupancy rate. Alternatively, the vehicle-mounted device installed in the vehicle wirelessly notifies the vehicle. The traffic volume may be detected based on the time from a predetermined point to the point where the detection means is provided.

The vehicle detected by the detection means is, for example, a car such as a passenger car, a truck, a bus, or a wagon,
Such as motorcycles.

The control means stops the watering when the traffic volume detected by the detection means is less than a predetermined threshold value (traffic volume). Therefore, the amount of water used can be suppressed as compared with a purification system that constantly sprays water regardless of traffic volume.

The first water sprinkling control device may further include water sprinkling means for spraying water on the road.

The water sprinkling means is, for example, the water sprinkling section 4-in FIG.
1, 4-2.

The water sprinkling means may be composed of, for example, water sprinkling parts 4-1 and 4-2 installed in the gantry 3 as shown in FIG. 1, or the water sprinkling part 4 shown in FIG.
Alternatively, the water sprinkling section 4B shown in FIG.

Further, the water sprinkling means may have any structure as long as it supplies water to the vicinity of the road.

The water sprinkled by the sprinkling means is, for example,
It may be alkaline water containing sodium hydroxide or the like. Pollutants generated as exhaust gas include, for example, nitrogen oxides and sulfur dioxide, and these substances are acidic. Therefore, by sprinkling the alkaline water from the water sprinkling section 4, it becomes possible to more effectively remove the contaminants by utilizing the neutralization.

The water sprinkling means sprays water from a predetermined height as shown in FIG. 1, adsorbs pollutants floating in the air by the water, and purifies the air. With this, for example, exhaust gas generated from the vehicle can be removed.

Further, the water sprinkled by the water sprinkling means is supplied to the surface of the road 1, so that the vehicle running there winds up the water in the form of mist. This also makes it possible to remove contaminants existing in the atmosphere.

A first sprinkling control method for a sprinkling control device of the present invention is a control step for controlling water spraying according to a detection step for detecting traffic volume on a road and the traffic volume detected by the processing of the detection step. And a step.

The detection step is constituted by, for example, step S11 in FIG. 4, and the control step is constituted by, for example, FIG.
It is configured by step S13.

In the first water sprinkling control apparatus and method of the present invention, the traffic volume on the road is detected, and the water sprinkling is controlled according to the detected traffic volume.

The second water sprinkling control device of the present invention comprises a detection means for detecting a vehicle traveling on the road, and a control means for starting water sprinkling on the road in response to the detection of the vehicle. It is characterized by including.

The detection means is composed of, for example, the vehicle detection sensor 51 shown in FIG. 7, and the control means is composed of, for example, the control section 31 shown in FIG.

The detection means detects the presence or absence of a vehicle by calculating the flight time of the detection signal when the detection signal such as laser or infrared rays is reflected by the vehicle and returned. The presence / absence of the vehicle may be detected by various methods such as detecting the presence / absence of the vehicle based on the information wirelessly notified from the vehicle-mounted device installed in the vehicle.

Since the water is sprayed only when the vehicle is detected, the amount of water used can be suppressed as compared with the purification system which continuously sprays the water regardless of the presence or absence of the vehicle. .

The control means further comprises a measuring means for measuring a period from when the spraying of water is started by the control means.
When the period measured by the measuring means exceeds a predetermined threshold value, the spraying of water can be stopped.

The measuring means comprises, for example, the timer 61 shown in FIG.

A second watering control method for a watering control apparatus according to the present invention comprises a detection step of detecting a vehicle traveling on a road,
And a control step of starting the spraying of water on the road in response to the detection of the vehicle by the processing of the detection step.

The detection step is constituted by, for example, step S21 of FIG. 9, and the control step is constituted by, for example, FIG.
It is configured by step S22.

According to the second sprinkling control apparatus and method of the present invention, the vehicle traveling on the road is detected, and in response to the detection of the vehicle, the water sprinkling on the road is started.

[0035]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view showing a structural example of a purification system to which the present invention is applied.

As shown in the figure, in this example, a vehicle 11 which is a four-wheeled vehicle is in a state of traveling on a road 1, and a white arrow indicates the traveling direction thereof.

Although only one is shown in the figure, the road 1 is provided with the traffic amount detection sensors 2 on the shoulders thereof at predetermined intervals, and the road 1 detected by the traffic amount detection sensor 2 is shown. The information regarding the traffic volume is notified to the road information center 21 via wire or wireless.

As will be described later, the traffic amount detecting sensor 2 is
For example, the traffic volume is detected based on the average speed of a vehicle such as a vehicle 11 running on the road 1, a bus, or a motorcycle (the average speed of the vehicle is treated as the traffic volume),
Traffic is detected based on the number of vehicles that have traveled within a predetermined period (within a unit period) (the number of vehicles is treated as traffic). Further, the road information center 21 may analyze the information detected by the traffic volume detection sensor 2 to generate the information on the traffic volume of the road 1.

The road information center 21 receives the traffic volume information representing the traffic volume of the road 1 at a predetermined timing from the watering control device 2.
Notify 2.

A gantry 3 is provided on the road 1 at a predetermined distance from the traffic amount detection sensor 2 on the downstream side in the traveling direction, and there is a sprinkler section for spraying water on the road 1. 4-1 and 4-2 (hereinafter, when it is not necessary to individually distinguish the water sprinkling units 4-1 and 4-2, they are collectively referred to as a water sprinkling unit 4) are installed.

The sprinkling control device 22 installed near the gantry 3 controls the sprinkling of water from the sprinkling section 4 based on the information notified from the road information center 21.

For example, when the sprinkling control device 22 determines that the traffic volume on the road 1 is low based on the notification from the road information center 21, it stops the spraying of water from the sprinkler section 4, while When it is determined that there is a lot of water, water is sprayed from the water sprinkling unit 4.

Since the spraying of water is stopped when the traffic volume is small, the amount of water used can be suppressed as compared with a purification system which constantly sprays water.

FIG. 2 is a block diagram showing a configuration example of the water sprinkling control device 22 of FIG.

The control section 31 controls the opening and closing of the valve 33 based on the output from the traffic volume information receiving section 32, and controls the supply of water to the sprinkling section 4 installed in the gantry 3.
When the valve 33 is opened, as shown in the figure,
The water stored in the supply source 34 is supplied to the sprinkling unit 4 through the supply pipe 35.

The water stored in the supply source 34 may be alkaline water containing, for example, sodium hydroxide. Pollutants generated as exhaust gas include, for example, nitrogen oxides and sulfur dioxide, and these substances are acidic. Therefore, by sprinkling the alkaline water from the water sprinkling section 4, it becomes possible to more effectively remove the contaminants by utilizing the neutralization.

The traffic volume information receiving unit 32 receives the traffic volume information transmitted from the road information center 21 via a cable or wirelessly. Further, the traffic volume information receiving unit 32 may generate the traffic volume information indicating the traffic volume of the road 1 based on the information transmitted from the traffic volume detection sensor 2.

The traffic volume information acquired by the traffic volume information receiving unit 32 is output to the control unit 31.

Next, the operation of the purification system shown in FIG. 1 will be described.

First, the processing of the road information center 21 for detecting the traffic volume will be described with reference to the flowchart of FIG.

In step S1, the road information center 2
1 acquires the information regarding the traffic volume detected by the traffic volume detection sensor 2 as a detection result.

For example, detection signals such as ultrasonic waves and infrared rays are emitted from the traffic amount detection sensor 2 toward the road 1 at a predetermined cycle, and the emitted detection signals are reflected by the traveling vehicle. , Is again acquired by the traffic amount detection sensor 2. Then, the traffic amount detection sensor 2 calculates the speed of the vehicle 11 based on the emitted detection signal and the detection signal reflected and returned.

Specifically, the speed of the detection signal reflected and returned is the speed obtained by adding the speed of the vehicle reflecting the detection signal, and the traffic detection sensor 2 outputs the detection signal emitted. For example, the speed of the vehicle 11 is calculated based on the difference between the speed of 1 and the speed of the reflected detection signal.

The traffic amount detecting sensor 2 is, for example,
The respective speeds of the vehicles that have traveled on the road 1 in a predetermined period such as hourly are calculated, and the average speed of those vehicles is calculated. Information indicating the average speed calculated by the traffic amount detection sensor 2 is output to the road information center 21.

The road information center 21 detects the traffic volume based on the information representing the average speed of the vehicle supplied from the traffic volume detection sensor 2, and in step S2, sprinkles the traffic volume information representing the detected traffic volume. It is transmitted to the control device 22. Since the road information center 21 is notified of the information from the plurality of traffic volume detection sensors 2, the road information center 21 refers to the plurality of pieces of information to detect a more accurate traffic volume. You may do it.

In the above, the road information center 21 is
I decided to detect the traffic volume based on the average speed of the vehicle,
For example, the number of vehicles that have traveled on the road 1 within a predetermined period such as one hour is counted, and a prepared correspondence table of the number of vehicles that has traveled on the road 1 and the traffic volume is referred to,
The traffic volume may be detected based on this. In addition, CCD (Charge C
oupled Device) Based on the bird's-eye image of the road 1 taken by the camera, calculate the occupancy rate of the vehicle on the road 1,
The traffic volume may be detected from the calculation result.

As described above, the traffic amount detecting sensor 2 can detect the traffic amount by various methods.

In the above, the road information center 21 detects the traffic volume based on the information supplied from the traffic volume detection sensor 2. However, the traffic volume detection sensor 2
May detect the traffic volume and notify the watering control device 22 of the traffic volume. Further, the information detected by the traffic volume detection sensor 2 may be supplied to the water sprinkling control apparatus 22 so that the water sprinkling control apparatus 22 can confirm the traffic volume by itself.

Next, referring to the flow chart of FIG.
A sprinkling control device 22 for controlling sprinkling from the sprinkling section 4 in FIG.
The process will be described.

In step S11, the traffic volume information receiving unit 32 receives the traffic volume information transmitted from the road information center 21, and outputs it to the control unit 31.

When the traffic amount information is supplied, the control unit 31 proceeds to step S12, determines whether the traffic amount on the road 1 exceeds a predetermined threshold value, and if it exceeds the predetermined threshold value. When it is determined, the process proceeds to step S13 and the valve 33
Open and start watering from the watering section 4. On the other hand, when the control unit 31 determines in step S12 that the traffic volume on the road 1 does not exceed the predetermined threshold value, the control unit 31 determines in step S12.
Proceeding to 14, for example, when the valve 33 is open, it is closed, and the spraying of water from the spraying section 4 is stopped.

As a result, for example, when the vehicle is almost not passing through, the spraying of water from the water spraying section 4 is stopped, and the amount of water used for removing pollutants can be suppressed. it can.

In the above, as shown in FIG. 1, it is assumed that water is sprayed from the sprinklers 4-1 and 4-2 installed in the gantry 3, but, for example, a shower type sprinkler as shown in FIG. Water may be sprinkled from the portion 4A. For example, atomized water is discharged into the atmosphere from the water sprinkling unit 4A.

Further, it is possible to remove pollutants contained in the exhaust gas by using the water sprinkling section 4B as shown in FIG. In the example of FIG. 6, the road 1 is provided with a lane 1A and a lane 1B with a median strip 1C interposed therebetween.
Depending on the traffic volume, water is made to flow from the sprinkler section 4B provided in the median strip 1C toward the surface of each lane.

For example, when the vehicle runs on the water flowing on the surface of the lane 1A, the water is mist-like and is wound up, and the mist-like water adsorbs and removes pollutants and the like. It

As described above, if the water is supplied to the vicinity of the road 1, the sprinkler section 4 can have various configurations. For example, mist-like water may be sprinkled from the sprinkling section 4B as shown in FIG. 6, or water may be sprinkled from the same height as the exhaust gas discharge port of the vehicle, and the sprinkled water may be discharged. The outlet may be directly covered.

The various sprinklers 4 described above have the following configurations.
Not only the purification system shown in FIG. 1 but also the purification system described later (the purification system in FIGS. 7 and 11).

FIG. 7 is a perspective view showing a structural example of another purification system to which the present invention is applied. The same parts as those in FIG. 1 are designated by the same reference numerals.

The vehicle detection sensor 51 installed on the shoulder of the road 1 detects the presence / absence of a vehicle traveling on the road 1 and notifies the sprinkling control device 22 of this.

The sprinkling control device 22 includes a vehicle detection sensor 51.
When it is notified that a vehicle has been detected, the sprinkler unit 4
Spray water from.

To remove the emitted pollutants,
Before the exhaust gas containing it is diffused, that is, immediately after being discharged from the vehicle, it is preferable to spray water on the discharge port. Therefore, by spraying water at the timing when the vehicle is detected in this way, it is possible to remove pollutants and the like contained in the exhaust gas before the discharged exhaust gas is diffused into the atmosphere. That is, the atmosphere can be purified more effectively.

As shown in the figure, the gantry 3 (sprinkling section 4) is installed on the downstream side in the traveling direction of the road 1 at a predetermined distance from the vehicle detection sensor 51.

FIG. 8 is a block diagram showing a configuration example of the water sprinkling control device 22 of FIG. 8, the same parts as those in FIG. 2 are designated by the same reference numerals.

The vehicle detection sensor 51 detects the presence / absence of a vehicle, for example, based on the flight time of the detection signal which emits a detection signal such as a laser or infrared ray, is reflected, and returns. When the vehicle detection sensor 51 detects a vehicle, the vehicle detection sensor 51 notifies the control unit 31 of the detection.

The controller 31 controls the timer 6 at the timing when the water is sprayed from the sprinkler 4 (when the valve 33 is opened).
The measurement by 1 is started, and when the measured value reaches a predetermined threshold value, the valve 33 is closed and the spraying of water from the sprinkler 4 is stopped.

Next, referring to the flowchart of FIG.
The processing of the sprinkling control device 22 that controls the sprinkling of water from the sprinkling unit 4 in FIG. 7 will be described.

In step S21, the control section 31
Based on the output from the vehicle detection sensor 51, it is determined whether or not a vehicle is detected. From the vehicle detection sensor 51, for example, a detection signal indicating the presence or absence of a vehicle is notified in a predetermined cycle.

At step S21, the control section 31
When it is determined that the vehicle is not detected, the processing is ended, and when it is determined that the vehicle is detected, step S22.
Proceed to.

The control section 31 determines in step S22 that
The valve 33 is opened, and water is sprinkled from the water sprinkling section 4. As a result, the vehicle passing directly under the gantry 3 can be directly exposed to water. The control unit 31 performs step S
At 23, after the measurement value of the timer 61 is initialized, the measurement is started.

Next, the processing of the water sprinkling control device 22 for stopping the water sprinkling from the water sprinkling section 4 of FIG. 7 will be described with reference to the flowchart of FIG.

In step S31, the control section 31
It is determined whether or not the measured value of the timer 61 exceeds a predetermined threshold value, and if it is determined that the measured value does not exceed the predetermined threshold value, the process is ended. On the other hand, when the control unit 31 determines in step S31 that the measured value of the timer 61 exceeds the predetermined threshold value, the control unit 31 proceeds to step S32, closes the valve 33, and stops watering.

The period corresponding to this threshold value is, for example, the period from the detection of the vehicle to the passage of the vehicle just below the gantry 3, or a period further added thereto by a predetermined period. Therefore, since the spraying of water is stopped when only the period corresponding to the threshold value has elapsed since the start, it is possible to further suppress the amount of water used.

Then, the control section 31 initializes the measured value of the timer 61 in step S33 and terminates the processing.

In the above-mentioned example, it is assumed that the spraying of water is started at the timing when the vehicle is detected.
The water spraying may be started at the timing when the vehicle 11 passes right under the gantry 3. In this case, the vehicle detection sensor 51 outputs information regarding the detected vehicle speed to the watering control device 22 as well as the presence or absence of the vehicle.

Then, the watering control device 22 calculates the timing at which the vehicle passes right below the gantry 3 based on the distance between the vehicle detection sensor 51 and the gantry 3 and the detected speed of the vehicle, and the timing is calculated. At the same time, water is sprinkled from the water sprinkling section 4. By controlling the spraying timing in this manner, the amount of water used can be further suppressed as compared with the case where the spraying of water is started immediately after the vehicle is detected.

FIG. 11 is a perspective view showing still another configuration example of the purification system to which the present invention is applied.

The purification system shown in FIG. 11 has columns 71 and 72 between the vehicle detection sensor 51 and the gantry 3 in addition to the configuration of the purification system shown in FIG. Then, on the column 71, a light projecting portion 81 that projects a laser for measuring the concentration of pollutants and the like, and a light receiving portion 8 that receives the laser that is projected from the light projecting portion 81 and is reflected and returned.
2 are installed. Further, the strut 72 has a light projecting portion 81.
A reflector 83 for reflecting the light projected from is installed.

In the purification system shown in the figure, the sprinkling control device 22 controls the sprinkling of water from the sprinkling section 4 according to the measured concentration and the presence or absence of the vehicle.

FIG. 12 is a block diagram showing a configuration example of the water sprinkling control device 22 of FIG. Description of the same parts as those in FIG. 8 will be omitted.

The light projecting / receiving control section 91 controls the light projecting section 81 and the light receiving section 82 to drive the light projecting section 81 to emit a laser beam for measuring the density at a predetermined timing. Further, the light emitting / receiving control unit 91, when the laser emitted from the light emitting unit 81 is received by the light receiving unit 82,
It is captured and output to the pollutant concentration measuring unit 92 in the subsequent stage.

The pollutant concentration measuring unit 92 measures the concentration of pollutants in the atmosphere transmitted by the laser emitted from the light projecting unit 81 based on the information supplied from the light projecting / receiving control unit 91. Specifically, the contaminant concentration measuring unit 92
The wavelength of the laser (light) received by the light receiving section 82 and the intensity of the light of each wavelength are analyzed, and the concentration of the pollutant is measured from the amount of light absorbed by the substance existing in the atmosphere.

The wavelengths of light absorbed by various substances existing in the atmosphere are different from each other, and exist by analyzing the wavelength of light transmitted through the atmosphere and the intensity of light of that wavelength. The substance and its concentration can be specified. That is, the more the light having a wavelength corresponding to a pollutant such as nitrogen oxide is attenuated, the more the nitrogen oxide is contained in the atmosphere, which indicates that the atmosphere is polluted.

Information on the concentration of the pollutant measured by the pollutant concentration measuring unit 92 is output to the control unit 31. Then, when it is determined that the concentration of the pollutant exceeds the concentration of the predetermined threshold value based on the supplied information, the control unit 31 performs processing such as starting watering.

Next, with reference to the flow chart of FIG. 13, the process of the water sprinkling control device 22 for controlling the sprinkling of water from the water sprinkling section 4 of FIG. 11 will be described.

In step S41, the pollutant concentration measuring unit 92 measures the concentration of pollutant contained in the exhaust gas. For example, a laser is projected from the light projecting unit 81 in a predetermined cycle, and when the laser is received by the light receiving unit 82, the light projecting and receiving control unit 91 captures it and receives the light. The laser information is output to the contaminant concentration measuring unit 92.

Then, the pollutant concentration measuring unit 92 analyzes the wavelength of the laser received by the light receiving unit 82 and the intensity of light of each wavelength, and detects the amount of light absorbed by the substance existing in the atmosphere. To determine the concentration of pollutants. Information on the measured concentration of the pollutant is output to the control unit 31.

In step S42, the control section 31
Based on the notified information, it is determined whether or not the measured density exceeds the density of a predetermined threshold value, and when it is determined that the density is over, the process proceeds to step S43. Step S4
In 3, the control unit 31 opens the valve 33 and causes the watering unit 4 to start watering.

On the other hand, in step S42, the control unit 3
If No. 1 determines that the measured density does not exceed the density of the predetermined threshold value, the process proceeds to step S44, and based on the output from the vehicle detection sensor 51, it is determined whether the vehicle is detected.

The control section 31 determines in step S44 that
When it is determined that the vehicle is not detected, the processing is ended, and when it is determined that the vehicle is detected, step S45.
At, the valve 33 is opened to start watering. Therefore,
Even if the concentration of pollutants in the atmosphere does not exceed the concentration of a predetermined threshold value, watering is started at the timing when the vehicle is detected.

Next, with reference to the flow chart of FIG. 14, a process of the water sprinkling control device 22 for stopping the water being sprinkled by the process of FIG. 13 will be described.

In step S51, the pollutant concentration measuring unit 92 measures the concentration of pollutant contained in the exhaust gas as in the process of step S41 described above, and outputs the measurement result to the control unit 31.

The control section 31 determines in step S52 that
It is determined whether or not the measured concentration exceeds the concentration of a predetermined threshold value, and when it is determined that the concentration exceeds the predetermined concentration, the process is terminated and water is continuously sprayed. On the other hand, in step S52, when the control unit 31 determines that the measured concentration does not exceed the concentration of the predetermined threshold value, the process proceeds to step S53, the valve 33 is closed, and the spraying of water from the sprinkling unit 4 is stopped. Let

As described above, it is possible to measure the concentration in the atmosphere and control the spraying of water according to the measurement result.

According to the present invention, the amount of water used can be suppressed because the distribution of water is controlled according to the presence or absence of vehicles and the amount of traffic.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration example of a purification system to which the present invention is applied.

FIG. 2 is a block diagram showing a configuration example of the water sprinkling control device of FIG.

FIG. 3 is a flowchart illustrating processing of the road information center in FIG.

FIG. 4 is a flowchart illustrating a process of the sprinkling control device in FIG.

FIG. 5 is a perspective view showing another configuration example of the purification system to which the present invention is applied.

FIG. 6 is a perspective view showing still another configuration example of the purification system to which the present invention is applied.

FIG. 7 is a perspective view showing a configuration example of a purification system to which the present invention has been applied.

8 is a block diagram showing a configuration example of the sprinkling control device in FIG. 7. FIG.

9 is a flowchart illustrating a process of the sprinkling control device in FIG. 7.

10 is a flowchart illustrating another process of the watering control device in FIG.

FIG. 11 is a perspective view showing another configuration example of the purification system to which the present invention is applied.

FIG. 12 is a block diagram showing a configuration example of the sprinkling control device in FIG. 11.

FIG. 13 is a flowchart illustrating a process of the sprinkling control device in FIG.

FIG. 14 is a flowchart illustrating another process of the watering control device in FIG.

[Explanation of symbols]

2 Traffic detection sensor 4-1 and 4-2 Sprinkler 21 Road Information Center 22 Sprinkling control device 31 Control unit 51 Vehicle detection sensor

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Claims (10)

[Claims] 1. A sprinkling control device for controlling the sprinkling of water for removing a predetermined substance existing in the atmosphere, comprising: a detection means for detecting a traffic volume on a road; and the traffic volume detected by the detection means. And a control means for controlling the spraying of the water. 2. The water sprinkling control device according to claim 1, further comprising a water sprinkling means for spraying water on the road. 3. The watering control device according to claim 1, wherein the detection means detects the traffic volume based on an average speed of a vehicle traveling on the road. 4. The sprinkling control device according to claim 1, wherein the detection unit detects the traffic volume based on the number of vehicles that have passed through the road within a predetermined period. 5. A sprinkling control method of a sprinkling control device for controlling sprinkling of water for removing a predetermined substance existing in the atmosphere, comprising: a detecting step of detecting traffic on a road; and a process of the detecting step. And a control step of controlling the spraying of the water according to the detected traffic volume. 6. A sprinkling control device for controlling the sprinkling of water for removing a predetermined substance existing in the atmosphere, wherein a detecting means for detecting a vehicle traveling on a road, and the detecting means for detecting the vehicle. And a control means for starting the spraying of the water on the road. 7. The water sprinkling control device according to claim 6, further comprising a water sprinkling unit that sprays water on the road. 8. The water sprinkling means is installed on the downstream side of the road with respect to the detecting means.
The watering control device described in 1. 9. The control means further comprises a measuring means for measuring a period after the spraying of the water is started, and the control means has the period measured by the measuring means exceeds a predetermined threshold value. At this time, the spraying of water is stopped, and the spraying control device according to claim 6, 7 or 8. 10. A sprinkling control method of a sprinkling control device for controlling sprinkling of water for removing a predetermined substance existing in the atmosphere, a detecting step of detecting a vehicle traveling on a road, and a process of the detecting step. And a control step of starting the spraying of the water onto the road in response to the detection of the vehicle by the method.