JP2020153165A - Stationary antifreeze spraying device and antifreeze spraying system - Google Patents

Abstract

To provide a stationary antifreeze spraying system that can appropriately perform inspections and replenishment of spraying agents based on a spraying operation history and the like of each stationary antifreeze spraying device.SOLUTION: In an antifreeze spraying system 1, an operation history of each stationary antifreeze spraying device 3 installed in a remote location is stored and maintained in an operation history storage unit comprising a nonvolatile memory 73a or the like of a monitoring communication unit 7. A communication control computing unit 72 is periodically activated, and when the operation history is updated, operation history information is transmitted to a management server 2 side, which is constructed as a cloud server or the like, via a communication network 10. On the management server 2 side, it is possible to periodically check the latest operation status of each stationary antifreeze spraying device, and to predict or set in advance the timing of inspections for each stationary antifreeze spraying device as well as the necessity and timing of replenishing the antifreeze agent based on the latest operation history.SELECTED DRAWING: Figure 3

Description

The present invention is used by installing it on the side of a road or the like to spray an antifreeze agent, sand or other spraying agent (collectively referred to as "antifreezing agent") for preventing the road surface or the like from freezing. The present invention relates to a stationary antifreeze spraying device and an antifreeze spraying system.

A stationary antifreeze spraying device has been proposed in Patent Documents 1 and 2. The stationary antifreeze spraying device described in Patent Document 1 is configured to automatically spray the antifreeze when the outside air temperature is low during a time when the road surface or the like is expected to freeze or snow. The antifreeze spraying system described in Patent Document 2 is configured so that an antifreeze spraying device installed in a remote location can be activated by remote control from an administrator to perform a spraying operation when necessary. Has been done.

Japanese Patent No. 3105771 Japanese Unexamined Patent Publication No. 2001-279637

The stationary antifreeze spraying device is often installed in a place with poor access such as a road in a mountainous area where there is a lot of freezing and snow. For this reason, it is generally difficult for workers to perform inspections and replenishment of antifreeze agents at appropriate timings. In particular, since the spraying operation is frequently performed in winter, the number of inspections and replenishment of the spraying agent increases. However, due to road surface freezing, snow cover, etc., it is difficult for workers to frequently inspect the stationary antifreeze spraying equipment installed around the country and replenish the spraying agent in winter. ..

In view of these points, an object of the present invention is to monitor the operating state of a stationary antifreeze spraying device installed in a remote location, and to perform the minimum necessary number of times based on the spraying operation history of each device. To provide a stationary antifreeze spraying device that enables proper inspection and replenishment of the spraying agent, and an antifreeze spraying system that collectively manages the stationary antifreeze spraying devices set in each area. It is in.

In order to solve the above problems, the antifreeze spraying system of the present invention includes a large number of stationary antifreeze spraying devices and stationary antifreeze spraying devices installed at distance from each other. It is equipped with a management server capable of two-way communication with.

Each of the stationary antifreeze sprayers is a mobile phone network, etc., between the sprayer that sprays the antifreeze and the management server that monitors the operating status of the sprayer and is the destination set in advance. It is equipped with a monitoring communication unit that communicates via the general communication network of. The sprayer includes a spraying mechanism and a sprayer control unit that drives the spraying mechanism to spray the antifreeze agent when a preset spraying condition is satisfied. The monitoring communication unit includes an operation state detection unit that detects the operation state of the spraying mechanism, an operation state acquisition unit that acquires the operation state from the sprayer control unit, and an operation state or operation state detected by the operation state detection unit. The operation history storage unit such as a non-volatile memory that stores and holds the operation status acquired by the acquisition unit as operation history information, and the operation history information stored and stored in the operation history storage unit are stored in the management server via a communication network. For example, it has a communication control unit that transmits to a cloud server. The communication control unit periodically reads out the operation history information stored in the operation history storage unit, and if there is a change from the previous operation history information, the operation history information read out this time. Is characterized by sending to the management server.

The operation history of each stationary antifreeze spraying device installed in a remote location is stored in the operation history storage unit consisting of the non-volatile memory installed in the monitoring communication unit attached or built in each. Will be done. The communication control unit is periodically activated to check whether the operation history stored in the memory has been updated. When the operation history is updated, the operation history information is sent to the management server side. On the management server side, the latest operating status of each stationary antifreeze spraying device can be checked on a regular basis. Based on the latest operation history, it is possible to predict or set in advance the inspection time of each stationary antifreeze sprayer and the necessity / timing of replenishment of the antifreeze.

The sprayer of the stationary antifreeze sprayer is, for example, a hopper of the antifreeze filled with the antifreeze, a shutter mechanism for opening and closing the supply port of the antifreeze supplied from the hopper to the spraying mechanism, and freezing. An opening / closing door mechanism that opens and closes the spraying port of the preventive agent, a warning light that is driven during the spraying operation of the antifreeze agent, a moving body sensor that detects people and vehicles in the spraying area by the spraying mechanism, and each part of the sprayer. It is also equipped with an electromagnetic contactor that turns on and off the drive power for each part of the monitoring communication unit.

The operation state detection unit of the monitoring communication unit determines whether or not the preset spraying conditions are satisfied based on the operation states of the shutter mechanism, the opening / closing door mechanism, the warning light, the moving body sensor, and the magnetic contactor. However, if the spraying condition is satisfied, it is determined that the antifreeze agent is sprayed by the sprayer. In addition, the start time and end time of the spraying state are measured, and the time from the start time to the end time is measured as the spraying time. The operation history storage unit stores the start time, end time, and spraying time as operation history information.

Instead of the operation state detection unit, the monitoring communication unit may be provided with an operation state acquisition unit. In this case, the operating state acquisition unit directly acquires the operating state from the spreader control unit of the spreader by communication.

In addition, it is desirable to appropriately manage the remaining amount of the antifreeze agent in each of the stationary antifreeze spraying devices, and to predict or set an appropriate replenishment timing of the antifreeze agent on the management server side based on this. Therefore, in the present invention, the operation history information includes the spraying amount of the antifreeze agent consumed in each spraying operation or the remaining amount after the spraying operation. The sprayer or the monitoring communication unit is provided with a spray amount estimation unit that estimates the spray amount of the antifreeze sprayed from the spray mechanism. The spraying amount estimation unit is based on the duration of the spraying operation, the opening degree of the supply port by the shutter mechanism in the spraying operation, and the closing time required from the fully closed to the fully opened or from the fully opened to the fully closed. Estimate the amount of spraying in the spraying operation.

For example, when the spraying operation is performed with the supply port fully open, the spraying amount is calculated by multiplying the time in the fully open state by the spraying amount per unit time. Regarding the time from fully closed to fully opened and the time from fully opened to fully closed, the spray amount is obtained by multiplying the spray amount per unit time in the fully open state by a predetermined reduction coefficient, for example, 1/2. Is calculated, and these are totaled to calculate the amount of spraying by one spraying operation. Alternatively, the time obtained by multiplying these times by a predetermined reduction coefficient is added to the time in the fully open state, and the addition time is multiplied by the amount of spraying per unit time in the fully open state to calculate the amount of spraying. As a result, the amount of spraying can be predicted according to the actual situation, and the remaining amount can be managed with high accuracy.

If the hopper is equipped with a residual quantity sensor that detects the load or volume of the antifreeze agent filled in the hopper, the sprayer or monitoring communication unit sprays in each spraying operation based on the detected value of the residual quantity sensor. The amount and the remaining amount of the hopper may be estimated. As a result, the remaining amount can be managed accurately and the timing of the replenishment work can be set appropriately.

Further, the sprayer or the monitoring communication unit is provided with a replenishment button for manual operation for inputting a replenishment signal indicating that the hopper is filled or replenished with the antifreeze agent, and the communication control unit of the monitoring communication unit is used. , When the replenishment signal is input, a signal indicating that the antifreeze agent has been replenished is transmitted to the management server. As a result, the replenishment status of each stationary antifreeze spraying device can be grasped in real time on the management server side, and the remaining amount can be appropriately managed.

It is explanatory drawing which shows the structural example of the antifreeze spraying system provided with the stationary antifreeze spraying apparatus to which this invention is applied. It is explanatory drawing which shows the spraying mechanism and control system of the stationary antifreeze spraying apparatus. It is a functional block diagram which shows the communication unit for monitoring of the stationary antifreeze spraying apparatus.

Hereinafter, embodiments of an antifreeze spraying system including a stationary antifreeze spraying device to which the present invention is applied will be described with reference to the drawings. The following embodiments show an example of the present invention, and are not intended to limit the present invention to the configurations of the embodiments.

FIG. 1 is an explanatory diagram showing an overall configuration of an antifreeze spraying system. The antifreeze spraying system 1 includes a management server 2 and a large number of stationary antifreeze sprayers 3 (1), 3 (2), 3 (3) installed in various places such as a shoulder in a mountainous area. It is composed of a communication network 10 that connects the management server 2 and each stationary antifreeze spraying device 3 (1), 3 (2), 3 (3), and so on. Further, if necessary, a communication terminal 9 (1) such as one or a plurality of personal computers equipped with a communication function and an Internet browser function, and one or a plurality of communication mobile terminals 9 such as a smartphone and a tablet terminal. (2) is also provided. .. The communication network 10 can use a communication network such as a mobile telephone network, LPWA, or an optical communication line.

The management server 2 can be constructed as, for example, a cloud server installed on the Internet. The management server 2 communicates with the stationary antifreeze spraying device 3 set in each place, can check their operation history, etc., can remotely control their spraying operation, and operates such as spraying conditions. Conditions can be set or changed. Using the communication terminal 9 (1) and the communication mobile terminal 9 (2), for example, communication is performed with the management server 2, and the operation history of the stationary antifreeze spraying device 3 installed in various places, etc. Can be confirmed. Alternatively, the operation history and the like can be confirmed by directly communicating with each stationary antifreeze spraying device 3. Further, for example, management authority to set or change operating conditions such as spraying conditions while checking the operation of each stationary antifreeze spraying device 3 on one of a plurality of mobile communication terminals 9 (2). It is also possible to give. By logging in to the management server 2 from a smartphone or tablet terminal with the registered ID and password, it is possible to impart such a viewing function for management and other functions to these terminals. Each stationary antifreeze spraying device 3 (1), 3 (2), 3 (3) ... is a sprayer 4 which is the main body of the antifreeze sprayer and a monitoring communication unit 7 which functions as an IoT terminal. And have. When the monitoring communication unit 7 is externally attached to the spreader 4 via a cable or the like, it may be built into the spreader 4 and integrated. In the following, when it is not necessary to distinguish between the stationary antifreeze spraying devices 3 (1), 3 (2), 3 (3) ..., These are referred to as "stationary antifreeze spraying". It will be described as "device 3".

FIG. 2A is an explanatory diagram showing a configuration example of the mechanical portion of the sprayer 4 of the stationary antifreeze spraying device, and FIG. 2B is an explanatory diagram showing a configuration example of the control system.

As shown in FIG. 2A, the spraying mechanism 40 of the sprayer 4 includes a main body case 41, a warning light 42 is arranged on the upper side of the front surface thereof, and a warning light 42 is arranged on the lower front side portion of the main body case 41. A horizontally long spraying port 43 for the antifreeze agent is open, and the spraying port 43 is opened and closed by the opening / closing door 44a of the opening / closing door mechanism 44. The upper end side of the inside of the main body case 41 is a hopper 45 filled with an antifreeze agent, and a supply port (not shown) for replenishing the antifreeze agent is arranged on the side surface of the main body case 41. To. Inside the main body case 41, the antifreeze agent that falls from the lower end opening of the hopper 45 is supplied to the lower disk rotary spraying unit 47 via the supply port 46. The supply port 46 is opened and closed by the shutter plate 48a of the shutter mechanism 48. A spray port 43 formed in the main body case 41 is located on the front side of the disk rotary spray unit 47. A drive battery power supply 49 is arranged under the disk rotary spraying unit 47.

As shown in FIG. 2B, the control system of the sprayer 4 satisfies a preset spraying condition based on the detection unit 50 that detects the operating state and surrounding conditions of each unit and the detection signal by the detection unit 50. In some cases, it is provided with a sprayer control unit 60 that drives the spraying mechanism 40 to spray the antifreeze agent. The detection unit 50 includes a temperature sensor 51 that detects the ambient temperature, and a moving body sensor 52 that detects whether or not a moving object such as a person or a car is contained in the antifreeze spraying area. Further, the detection unit 50 includes a door sensor 53 that detects the opening / closing of the opening / closing door 44a, and a shutter opening degree sensor 54 that detects the opening / closing of the shutter plate 48a. A spray agent remaining amount sensor 55 that detects the remaining amount of the antifreeze agent remaining in the hopper 45 may be arranged. The spray agent residual amount sensor 55 detects the load or volume of the antifreeze agent.

The spreader control unit 60 can be configured around a microcomputer, for example, and has a CPU 61 that controls each part, a ROM 62 in which a control program and the like are stored in advance, and a RAM 63 that is used as a work area for various calculations. Basically from an input interface 64 that receives an input signal from the outside, an output interface 65 for outputting a control signal or the like to the outside, and a bus 66 for sending and receiving data and an address between each of these parts. It is configured.

The spreader control unit 60 is connected to the input unit 67 in which various operation buttons including the replenishment button 67a, operation switches, and the like are arranged via the input interface 64, and the temperature sensor 51 of the detection unit 50. , The detection signal from the moving body sensor 52, the door sensor 53, the shutter opening degree sensor 54, the spray agent remaining amount sensor 55, and the like is input. The sprayer control unit 60 is connected to each unit of the spraying mechanism 40 via the output interface 65. For example, the drive motor 44b of the opening / closing door mechanism 44, the drive motor 48b of the shutter mechanism 48, the drive motor 47b of the disk rotary spraying unit 47, and the like are driven and controlled via a motor driver. Further, the power supply line from the drive battery power supply 49 to each load (drive motors 44b, 47b, etc.) is connected to an electromagnetic contactor 69 for turning on / off the power supply.

The sprayer control unit 60 activates the spraying mechanism 40 to spray the antifreeze agent when the preset spraying conditions are satisfied. For example, when there is a risk of road surface freezing when the outside air temperature falls below the set temperature during a set time such as at night, the antifreeze agent is sprayed over the set time on condition that no person, car, etc. is detected. .. Various conditions can be set as the spraying conditions.

FIG. 3 is a functional block diagram showing a control system of the monitoring communication unit 7 of the stationary antifreeze spraying device 3. As shown in this figure, the monitoring communication unit 7 includes an input / output control arithmetic unit 71, a communication control arithmetic unit 72, a storage device 73 having a non-volatile memory 73a, an input circuit 74, and an output circuit 75. Detection signals from the temperature sensor 51, the moving body sensor 52, the door sensor 53, the shutter opening sensor 54, and the spray agent remaining amount sensor 55 on the side of the sprayer 4 are input to the input circuit 74, and the state of the electromagnetic contactor 69 is input. A signal is also input. The input / output control arithmetic unit 71 functions as an operation state detection unit that detects the operation state of the spreader 4 based on each input detection signal and the on / off state of the magnetic contactor 69. The input / output control arithmetic unit 71 stores the detected operation state as operation history information in the non-volatile memory 73a which is the operation history storage unit of the storage device 73.

When it is detected that the replenishment button 67a has been operated, the spray agent replenishment history information (replenishment date and time) is stored and held in the non-volatile memory 73a as the operation history information. The communication control arithmetic unit 72 transmits the operation history information and the spray agent replenishment history information stored and held in the non-volatile memory 73a to the destination in advance via the communication network 10 (optical line, mobile phone line such as LPWA, etc.). The communication control to be transmitted to the management server 2 set as is performed.

The operation state detection unit of the input / output control arithmetic unit 71 is based on signals from each of the shutter opening sensor 54, the door sensor 53, the warning light 42, the moving body sensor 52, the temperature sensor 51, and the electromagnetic contactor 69, and the spreader 4 Determine the operating status of. When these signal states satisfy the preset setting conditions, it is determined that the sprayer 4 is in the spraying state in which the antifreeze agent is sprayed, and the start time and end time of the spraying state are measured. , Measure the time from the start time to the end time as the spraying time. The non-volatile memory 73a, which is an operation history storage unit, stores the start time, end time, spraying time, and spraying amount as operation history information. Further, the remaining amount of the antifreeze agent is calculated based on the detected value of the spraying agent remaining amount sensor 55, and the remaining amount is also stored and retained as operation history information after the spraying operation is completed.

The input / output control arithmetic unit 71 may include an operation state acquisition unit that acquires the operation state directly from the spreader control unit 60 of the spreader 4 instead of the operation state detection unit. In this case, signals representing information such as the start time, end time, and spray time of spraying are received from the sprayer control unit 60, and these are stored and held in the non-volatile memory 73a as operation history information.

The communication control arithmetic unit 72 periodically reads out the operation history information stored and held in the non-volatile memory 73a, and when there is a change from the previous operation history information, that is, the operation history information is updated. If so, transmission control is performed to transmit the read operation history information to the management server 2 via the communication network 10.

Further, when the hopper 45 is filled or replenished with the antifreeze agent and the replenishment button 67a for manual operation is operated by the worker, a replenishment signal indicating the replenishment is input to the input / output control arithmetic unit 71. .. The input / output control arithmetic unit 71 also performs transmission control for transmitting a signal indicating that the antifreeze agent has been replenished to the management server 2 via the communication control arithmetic unit 72. Although the replenishment button 67a is arranged on the side of the spreader 4, it may be arranged on the side of the monitoring communication unit 7.

On the management server 2 side, the received operation history information can be managed, and the timing of inspection or replenishment of the antifreeze agent can be appropriately set. Further, the spraying conditions can be set and changed for each stationary antifreeze spraying device 3 via the management server 2. Further, if necessary, an operation command can be transmitted to remotely control each stationary antifreeze spraying device 3 to perform the spraying operation.

Here, when the sprayer 4 is not provided with the spray agent remaining amount sensor 55, etc., the spray amount estimation unit that estimates the spray amount of the antifreeze sprayed from the spray mechanism 40 on the input / output control arithmetic unit 71. It has the function as. The spraying amount estimation unit determines the duration of the spraying operation, the opening degree of the supply port 46 by the shutter mechanism 48 in the spraying operation, and the closing time required for the supply port 46 from fully closed to fully opened or from fully opened to fully closed. Based on this, the amount of spraying in each spraying operation is estimated.

For example, the method of estimating the amount of spraying measures the number of seconds of spraying when the door is opened, the motor is turned on, and the shutter is opened. The operating time from shutter closing to shutter opening is measured and stored in the non-volatile memory 73a, and the spraying time during opening and closing is reduced by half and added to the spraying time in the fully open state to calculate the total spraying time. To do. Multiply this by the amount of spraying per unit time to calculate the amount of spraying in one spraying operation.

Further, in the case of the operation in which the shutter plate 48a returns in the middle (does not reach full opening), the shutter plate 48a is opened to what percentage by using the time required for opening and closing the shutter plate 48a stored in the non-volatile memory 73a. Calculate and multiply the number of spraying seconds by the reduction factor. By doing so, even when the spray agent remaining amount sensor 55 is not attached, the remaining amount can be managed with high accuracy.

In this example, the monitoring communication unit 7 is provided with the function of a spray amount estimation unit. It is also possible to give the sprayer control unit 60 of the sprayer 4 a function of a spray amount estimation unit. In this case, information including information on the estimated spray amount is provided to the input / output control arithmetic unit 71 of the monitoring communication unit 7 as an operating state from the sprayer control unit 60 side, and is stored and held.

(Other embodiments)
For example, the monitoring communication unit 7 can periodically acquire the weather radar data at the set position and determine the rainfall and snowfall states based on the acquired weather data. Freezing conditions for determining the freezing state are set from the combination of the acquired weather information and the road surface temperature, and when the freezing conditions are satisfied in the sprayer control unit 60, the spraying mechanism 40 is driven to spray. Can also be done.

In addition, it is also possible to link data on the road surface condition, weather information, road surface temperature, spraying history, etc. between the stationary antifreeze spraying devices 3 in the vicinity via the monitoring communication unit 7.

1 Antifreeze spraying system 2 Management server 3, 3 (1), 3 (2), 3 (3) Stationary antifreeze sprayer 4 Spreader 7 Monitoring communication unit 9 (1) Communication terminal 9 (2) Mobile terminal for communication 10 Communication network 40 Spraying mechanism 41 Main body case 42 Warning light 43 Spraying port 44 Opening / closing door mechanism 44a Opening / closing door 44b Drive motor 45 Hopper 46 Supply port 47 Disk rotary spraying unit 47b Drive motor 48 Shutter mechanism 48a Shutter plate 48b Drive motor 49 Drive battery power supply 50 Detection unit 51 Temperature sensor 52 Mobile sensor 53 Door sensor 54 Shutter opening sensor 55 Spraying agent remaining amount sensor 60 Sprayer control unit 61 CPU
62 ROM
63 RAM
64 Input interface 65 Output interface 66 Bus 67 Input unit 67a Replenishment button 69 Electromagnetic contacter 71 Input / output control arithmetic unit 72 Communication control arithmetic unit 73 Storage device 73a Non-volatile memory 74 Input circuit 75 Output circuit

Claims (8)

A sprayer that sprays antifreeze and
A monitoring communication unit that monitors the operating status of the spreader and communicates with a management server that is a preset destination.
Is equipped with
The sprayer includes a spraying mechanism and a sprayer control unit that drives the spraying mechanism to spray the antifreeze agent when a preset spraying condition is satisfied.
The monitoring communication unit is
An operation state detection unit that detects the operation state of the spraying mechanism, or an operation state acquisition unit that acquires the operation state from the sprayer control unit.
An operation history storage unit that stores and holds the operation state detected by the operation state detection unit or the operation state acquired by the operation state acquisition unit as operation history information.
A communication control unit that transmits the operation history information stored and stored in the operation history storage unit to the management server via a communication network.
Is equipped with
The communication control unit periodically reads out the operation history information stored in the operation history storage unit, and if there is a change from the previous operation history information, it is read out this time. A stationary antifreeze spraying device that transmits the operation history information to the management server. The sprayer
An antifreeze hopper filled with the antifreeze and
A shutter mechanism that opens and closes the supply port of the antifreeze agent supplied from the hopper to the spraying mechanism, and
An opening / closing door mechanism that opens and closes the spraying port of the antifreeze agent of the spraying mechanism,
A warning light that is driven during the spraying operation of the antifreeze agent,
A moving body sensor that detects people and vehicles in the spraying area by the spraying mechanism,
An electromagnetic contactor that turns on and off the driving power for each part of the spreader and each part of the monitoring communication unit, and
The stationary antifreeze spraying device according to claim 1. The monitoring communication unit includes the operating state detection unit.
The operating state detection unit
A setting condition in which the operating state of the spreader is determined based on the operating states of the shutter mechanism, the opening / closing door mechanism, the warning light, the moving body sensor, and the electromagnetic contactor, and the operating state is preset. If the condition is satisfied, it is determined that the sprayer is in a spraying state in which the antifreeze agent is sprayed, the start time and end time of the spraying state are measured, and the time from the start time to the end time is determined. Measured as spraying time,
The stationary antifreeze spraying device according to claim 2, wherein the start time and the end time are stored and stored as the operation history information in the operation history storage unit. The monitoring communication unit includes the operating state acquisition unit.
The operation state acquisition unit acquires operation state information including whether or not the antifreeze agent is sprayed by the sprayer from the sprayer control unit of the sprayer by communication.
The operating state information includes the start time and the end time of the spraying state.
The stationary antifreeze spraying device according to claim 2, wherein the start time and the end time are stored in the operation history storage unit as the operation history information. The operation history information includes the amount of the antifreeze sprayed in each spraying operation.
The sprayer or the monitoring communication unit includes a spray amount estimation unit that estimates the spray amount of the antifreeze sprayed from the spray mechanism.
The spraying amount estimation unit requires the duration of the spraying operation, the opening degree of the supply port by the shutter mechanism in the spraying operation, and the supply port from fully closed to fully open, or from fully open to fully closed. The stationary antifreeze spraying device according to claim 3 or 4, wherein the spraying amount in each spraying operation is estimated based on the closing time. The operation history information includes the amount of the antifreeze sprayed in each spraying operation and the remaining amount of the antifreeze agent in the hopper.
It is equipped with a remaining amount sensor that detects the load or volume of the antifreeze agent filled in the hopper.
The stationary antifreeze agent according to claim 3 or 4, wherein the sprayer or the monitoring communication unit estimates the spray amount and the remaining amount of the hopper in each spraying operation based on the detection value of the remaining amount sensor. Sprayer. The spreader or the monitoring communication unit includes a replenishment switch for manual operation that inputs a replenishment signal indicating that the hopper is filled or replenished with an antifreeze agent.
When the replenishment signal is input, the communication control unit of the monitoring communication unit transmits a signal indicating that the antifreeze agent has been replenished to the management server, which is any one of claims 2 to 6. The stationary antifreeze sprayer described in one section. Multiple stationary antifreeze sprayers installed at separate locations,
A management server capable of two-way communication with each of the stationary antifreeze spraying devices,
Is equipped with
The antifreeze spraying system according to any one of claims 1 to 7, wherein each of the stationary antifreeze spraying devices is the stationary antifreeze spraying device.