JPH09106497A - Management system for snow removing vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive and simple snow removing vehicle management system capable of the real time processing of the optimization of the instruction of a snow removing operation. SOLUTION: This system is provided with a sign post side management means 31 provided in each sign post 30 capable of controlling and managing the collection of vehicle side communication information 28a which is snow removing operation working conditions for each snow removing vehicle 20 and instructing snow removing operation contents for each snow removing vehicle 20 by transmitting center side communication information 38a which is the snow removing operation contents for each snow removing vehicle 20 to each snow removing vehicle 20 corresponding to the gathered vehicle side communication information 28a and a vehicle side management means 21 mounted to each snow removing vehicle 20 capable of recognizing the snow removing operation contents instructed by the transmission of the center side communication information 38a relating to itself, executing the snow removing operation based on the center side communication information 38a and transmitting the vehicle side communication information 28a which are the working conditions of the snow removing operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the operation of snow removal work for each snow removal vehicle through a sign post which is a wireless communication means arranged in a plurality of points on a road while being connected to a center by a wired line. A snow removal vehicle management system capable of collecting the status and instructing the snow removal work content of each snow removal vehicle according to the collected snow removal work operation status, particularly a center for centrally managing snow removal work The operation status of the snow removal work for each snow removal vehicle can be collected via the sign post which is a wireless communication means provided at a plurality of points on the highway at predetermined intervals while being connected to the telephone line. At the same time, the present invention relates to a snow removal vehicle management system capable of instructing the details of the snow removal operation for each snow removal vehicle in accordance with the collected operation status of each snow removal operation.

[0002]

2. Description of the Related Art Conventionally, as a snow removal vehicle management system 9 of this type, for example, JP-A-06-131587 (see FIG. 6).
There is something like that shown in In the snow removal vehicle management system 9, each snow removal vehicle has various sensors 1 and operation recording means 2 and operation recording means 2 for collecting operation status of snow removal work.
The IC card 3 that holds the operating status collected by the device was installed.

In such a snow removal vehicle management system 9, the operation recording means 2 collects the operation status of each sensor and stores the collected operation status in the IC card 3. Therefore, in order to obtain the operation status of the snow removal vehicle (for example, position information, snow removal progress status), the IC card 3 is taken out from the snow removal vehicle returning to the center 4 and the operation status information held therein is decoded. It was a so-called batch processing acquisition.

Further, the frequency of the radio wave that can be used by the snow removal vehicle is preferentially assigned to the Ministry of Construction and the Road Public Corporation.
The wireless usage priority for the snow removal companies was set low.

[0005]

In the case of urgent and high-risk work such as snow removal work, the operation status (eg, position information, snow removal progress status) of the snow removal vehicle is grasped in real time, and optimum operation is performed based on the operation status. Conventional snow removal vehicle management system 9
However, since the operation status (for example, position information, snow removal progress status) of the snow removal vehicle is acquired in batch processing, there is a problem that real-time processing of optimization of snow removal operation instructions is difficult.

[0006] Further, the wireless use priority for the snow removal work is set to a low level, and the snow removal work is performed by the snow removal work on the radio waves assigned with a low priority (that is, low power radio waves or low frequencies having low information transmission capability). Band radio wave)
Since it has been necessary to collect the operation status (for example, position information, snow removal progress status) of the snow removal vehicle, there is a problem in that it is difficult to perform real-time processing for optimizing snow removal work instructions.

The present invention has been made in view of such a conventional problem, and does not require a license of a wireless worker for transmitting information at a relatively short distance such as between a sign post and a snow removing vehicle. By performing wireless communication using radio waves of a certain degree, and by performing wired communication using a telephone line already installed on the expressway for transmitting information over a relatively long distance such as between a sign post and a center. , It becomes possible to grasp in real time the operating status (for example, position information, snow removal progress status) of a snow removal vehicle that performs urgent and high-risk work such as snow removal work, and based on that, the snow removal operation It is an object of the present invention to provide an inexpensive and simple snow plow management system that enables real-time processing of the optimization of the instructions.

[0008]

Means for achieving the object are as follows. [1] Item Snow removal work for each snow removal vehicle (20) via signature posts (30), which are wireless communication means provided in a plurality on important points on the road while being connected to the center (12) by a wired line. A snowplow vehicle management system (10) capable of collecting the operation status of the snowplow vehicle and instructing the snowplow operation content of each snowplow vehicle (20) according to the collected snowplow operation statuses. , The sign post (30) can be provided and can control and manage the collection of the vehicle side communication information (28a) which is the snow removal work operation status of each of the snow removal vehicles (20), and the collected vehicle side. The snow removal vehicle (2) is transmitted by transmitting the center side communication information (38a), which is the snow removal work content of each snow removal vehicle (20), according to the communication information (28a).
0) The sign post side management means (31) capable of instructing the snow removal work contents for each, and the center side communication information (3) which is provided for each of the snow removal vehicles (20) and is applied to itself.
8a) is transmitted to grasp the contents of the instructed snow removal work, the snow removal work can be executed based on the center side communication information (38a), and the vehicle side communication information (operation status of the snow removal work) 28a) can be transmitted to the vehicle-side management means (21), and a snowplow vehicle management system (10).

[2] Item The vehicle side communication information (28a) and the sign post side management means (3) that has transmitted the vehicle side communication information (28a).
The snow removal vehicle management system (10) according to the item [1], wherein a work position on the road of each snow removal vehicle (20) is specified based on the installation position of 1).

Item [3] The center side communication information (38a) or the vehicle side communication information (2) executed between the sign post side management means (31) and the vehicle side management means (21).
8a) is transmitted by each of the sign post side management means (3
1) and the vehicle side management means (21) are respectively executed via wireless communication means provided in the snowmobile management system (1) or (2). 10).

[4] Item [3] The wireless communication means described in the item [3] is a low power wireless station, and is capable of transmitting an electric wave having a radio wave arrival range of about 100 m to about 300 m. The snowplow management system (10).

Item [5] The wired line is a telephone line (14), and the telephone line (14) as the wired line is provided between the sign post side management means (31) and the center (12). The transmission of the center side communication information (38a) or the vehicle side communication information (28a), which is connected by each of the sign post side management means (31) and the center (12), is performed by each of the above. The snowplow vehicle management system according to any one of items [1] to [4], which is executed via a sign post-side management unit (31) and a wired communication unit provided in each of the centers (12). (1
0).

[6] Item The vehicle-side communication information (28a) is stored in the center (1).
2) access request information, call name information (15) for identifying each snow removal vehicle (20), and operation information (25) indicating the progress of snow removal work of each snow removal vehicle (20).
a) or at least one of emergency information from each of the snow removal vehicles (20) to the center (12), characterized in that the snow removal according to [1] to [5] Car management system (10).

[7] Item The center side communication information (38a) is access request information to each of the snow removal vehicles (20), and the call name information (1).
5), at least one of snow removal work content instruction information for each snow removal vehicle (20) or emergency information from the center (12) to the corresponding snow removal vehicle (20). The snowplow vehicle management system (10) according to any of [1] to [6].

Item [8] The vehicle-side management means (21) is capable of displaying the center-side communication information (38a) or the vehicle-side communication information (28a) or indicating by voice.
[1] to [7], characterized by comprising 6).
The snowplow management system (10) according to the item.

Item [9] The sign post side management means (31) provided in each of the sign posts (30) stores vehicle side communication information (28a) which is the snow removal work operating status of each snow removal vehicle (20). The center side communication information (38) corresponding to the collected vehicle side communication information (28a) is urged while urging collection control management.
By urging the transmission of a) to each snow removal vehicle (20), it is possible to control the instruction of the snow removal work content for each snow removal vehicle (20).
2), a signpost-side call name storage unit (34) capable of holding call name information (15) for identifying each of the snow removal vehicles (20), and each of the sign posts (3).
0) and the vehicle-side management means (21) between the center-side communication information (38a) or the vehicle-side communication information (28a), which is the wireless communication means, that is, the sign post side. A wireless communication unit (38),
A sign post which is the wired communication means capable of executing transmission of the center side communication information (38a) or the vehicle side communication information (28a) between each of the sign posts (30) and the center (12). The side wire communication unit (39), and the snow removal vehicle management system (10) according to items [1] to [8].

Item [10] The vehicle-side management means (21) provided in each of the snow removal vehicles (20) prompts the reception of the center-side communication information (38a) concerning the self, and the instructed snow removal work. A vehicle capable of grasping the content and urging the execution of the snow removal work based on the communication information (38a) on the center side, and also the transmission of the communication information (28a) on the vehicle side which is the operation status of the snow removal work. The side control unit (22) and the call name information (1) for identifying the snow removal vehicles (20).
Vehicle side call name storage unit (2)
4) and a sensor (2) installed on each snow removal vehicle (20)
The operation storage unit (25) capable of holding the operation information (25a) generated by 7) and the center side communication information (38a) or the vehicle side communication information (28a) can be displayed or instructed by voice. Possible display (2
6), and transmission of the center side communication information (38a) or the vehicle side communication information (28a) between each of the sign posts (30) and each of the vehicle side management means (21). The vehicle-side wireless communication unit (28) which is the wireless communication means, and the snow removal vehicle management system (1) according to any one of items [1] to [9].
0).

[11] Item The vehicle-side control unit (22) according to item [10] generates a random time limit value which is a random number value within a predetermined range when the access request information relating to the self is received. In addition, the random timer (2
2A), and when the access request information concerning the self is received, the random timer (22
Prompt the timed operation in A), wait for the end of the timed operation, and then perform the center side communication information (38) concerning the self.
a) It is possible to prompt reception of the snow removal work by instructing the content of the instructed snow removal work, and to promote execution of the snow removal work based on the communication information (38a) on the center side. [1] to [1], which is capable of prompting transmission of communication information (28a).
[0] The snow plow management system (10).

[12] Item [11] The random timer (22A) described in [11] uses the remainder when the remainder is calculated by the value of the number of snow-removing vehicles (20) performing the snow-removing work in the infinite loop counter. The snow plow management system (10), characterized in that the random time limit value is generated.

[13] Item The value of the number of snow-pulling vehicles (20) according to [11 or 12] can be transmitted to the vehicle-side managing means (21) via the sign posts (30). The snow plow management system (10) is characterized in that the range of the random timer (22A) that can be updated at any time can be automatically set.

[14] Item The vehicle-side control unit (22) completes the transmission of the center-side communication information (38a) or the vehicle-side communication information (28a) when the transmission of the snow removal vehicle (20) is completed. ), The transmission of the vehicle number can be prompted, and the snow removal vehicle management system (1) according to items [1] to [13].
0).

Item [15] The sign post side control section (32) controls the center side communication information (38a) or the vehicle side communication information (28).
Based on the vehicle number of the snow removal vehicle (20) for which the transmission of a) has been completed and the position of the sign post (30) that has received the vehicle number, the snow removal vehicle (20) for which the transmission has been completed and the transmission of the snow removal vehicle (20) have not been completed. The snow removal vehicle management system (10) according to any one of items [1] to [14], wherein the snow removal vehicle (20) can be identified from the completed snow removal vehicle.

[16] Item The sign post side control section (32) described in item [15] is
When the transmission of the center side communication information (38a) or the vehicle side communication information (28a) based on the timed operation using the random timer (22A) is not completed in one sign post (30). , The sign post (30) next to the one sign post (30)
When the transmission of the center side communication information (38a) or the vehicle side communication information (28a) is executed, the snow removal vehicle (20) that has not completed from the position of the sign post (30) that has received the vehicle number. A snow removal vehicle management system (10), characterized in that the transmission of the center side communication information (38a) or the vehicle side communication information (28a) can be preferentially executed.

Item [17] The snow removal vehicle (2) which has completed the transmission of the center side communication information (38a) or the vehicle side communication information (28a) based on the timed operation using the random timer (22A).
0) the vehicle number of the snow removal vehicle (20) and the position of the sign post (30) that has received the vehicle number of the snow removal vehicle (20) that has completed the transmission, and the snow removal vehicle that has completed the transmission. The snow removal vehicle management system (10) according to any one of items [1] to [16], wherein the snow removal vehicle (20) and the snow removal vehicle (20) whose transmission has not been completed can be identified.

[0025]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram showing a snow removal vehicle management system (10) according to an embodiment of the present invention. FIG.
Is a snowplow management system (1) according to an embodiment of the present invention.
It is a functional block diagram of the sign post side management means (31) in 0). FIG. 3 is a vehicle side management means (2) in the snow removal vehicle management system (10) according to the embodiment of the present invention.
It is a functional block diagram of 1).

First, the structure of the snow removal vehicle management system (10) according to the embodiment of the present invention will be described. The snow plow management system (10) according to the embodiment of the present invention, as shown in FIG.
The snow removal vehicle (20) is connected via a sign post (30), which is a wireless communication means, provided in a plurality of points on a road (specifically, an expressway) while being connected to the center (12) by a wired line. ), It is possible to collect the operation status of the snow removal work for each snow removal work, and to instruct the snow removal work content of each snow removal vehicle (20) according to the collected operation status of the snow removal work.

The snow removal vehicle management system (10) has center side communication information (38a) or vehicle side communication information (28a) based on a timed operation using a random timer (22A).
Based on the vehicle number of the snow removal vehicle (20) that has been transmitted by the snow removal vehicle (20) that has completed the transmission and the position of the sign post (30) that has received the vehicle number of the snow removal vehicle (20) that has completed the transmission The vehicle side management means (21) and the sign post side management means (31) are provided so that the snow removal vehicle (20) whose transmission has been completed and the snow removal vehicle (20) whose transmission has not been completed can be identified. It will be done.

The snow removal vehicle management system (10) is based on the vehicle side communication information (28a) and the installation position of the sign post side management means (31) which has transmitted the vehicle side communication information (28a). 20) To be able to specify the work position on each road (specifically, the expressway),
It comprises a snow removal vehicle (20) equipped with a vehicle side management means (21) and a sign post (30) equipped with a sign post side management means (31).

The sign posts (30) are installed on the highway at predetermined intervals such that the radio communication distance of the radio communication means, which is a low power radio station, is in the range of about 100 m to about 300 m. The wireless communication means installed in each sign post side management means (31) and each vehicle side management means (21)
The center side communication information (38a) or the vehicle side communication information (28a) is transmitted between each sign post side management means (31) and each vehicle side management means (21).

The wireless communication means of the embodiment of the present invention is specifically a wireless circuit or MSK that can be controlled by using an MPU.
This can be achieved by a modem circuit or the like. The wireless communication means is a low-power wireless station and has a wireless radio wave reaching distance of about 1
It is possible to transmit radio waves in the range of 00 m to approximately 300 m.

The snow removal vehicle management system (10) according to the embodiment of the present invention can be specifically achieved by an arithmetic processing unit mainly composed of an MPU. Each sign post side management means (31) and center (specifically, arithmetic processing means mainly composed of MPU installed in the center) (12)
A telephone line (14) as a wired line is connected between the and.

Specifically, the wired communication means respectively provided in the sign post management means (31) and the center (12) are connected between the sign post management means (31) and the center (12). It is connected via a telephone line (14) so that the transmission of the center side communication information (38a) or the vehicle side communication information (28a) to be executed can be executed.

Specifically, the wired communication means of the embodiment of the present invention is a telephone modem circuit controllable by using an MPU,
This can be achieved by a network control circuit or the like. The vehicle-side communication information (28a) includes access request information to the center (12), call name information (15) for identifying each snow removal vehicle (20), and a progress status of snow removal work of each snow removal vehicle (20). Operation information (25a) shown or each snow removal vehicle (2
0) to the center (12) and comprises at least one of the emergency information.

The center side communication information (38a) includes access request information to each snow removal vehicle (20) and call name information (1).
5), at least one of snow removal work content instruction information for each snow removal vehicle (20) or emergency information from the center (12) to the corresponding snow removal vehicle (20).

Next, the configuration of the sign post side management means (31) of the embodiment of the invention will be described. As shown in FIG. 1, the sign post side management means (31) is provided for each sign post (30) and collects vehicle side communication information (28a) which is the snow removal work operating status of each snow removal vehicle (20). It is possible to control and manage, and according to the collected vehicle side communication information (28a), the center side communication information (38a) which is the snow removal work content of each snow removal vehicle (20) is transmitted for each snow removal vehicle (20). By removing the snow removal vehicle (2
0) To be able to give instructions for each snow removal work,
It is connected to the center (12).

The sign post side management means (31) of the embodiment of the present invention can be specifically achieved by an arithmetic processing means mainly composed of an MPU. Furthermore, the signpost-side management means (31) installed in each signpost (30) includes a signpost-side control unit (32), a signpost-side call name storage unit (34), and a signpost-side wireless communication unit (38). ) And a wired communication unit (39) on the sign post side.

The configuration of the sign post side management means (31) of the embodiment of the invention will be described in more detail. As shown in FIG. 2, the sign post-side control unit (32) prompts control management of collection of vehicle-side communication information (28a), which is the snow removal work operation status of each snow removal vehicle (20), and collects the information. Executing control of the snow removal work content instruction for each snow removal vehicle (20) by urging the transmission of the center communication information (38a) according to the vehicle communication information (28a) to each snow removal vehicle (20). In order to enable the above, it is connected to the sign post side call name storage section (34), the sign post side wireless communication section (38) and the sign post side wired communication section (39).

The sign post-side control section (32) of the embodiment of the present invention can be specifically realized by an arithmetic processing means mainly composed of MPU. In addition, the sign post side control unit (32), the center side communication information (38a)
Alternatively, based on the vehicle number of the snow removal vehicle (20) whose transmission of the vehicle-side communication information (28a) has been completed and the position of the sign post (30) that has received the vehicle number, the snow removal vehicle (20) having completed the transmission The sign post side call name storage section (34) and the sign post side wireless communication section (38) so that the snow removal vehicle (20) whose transmission has not been completed can be identified.
And a wire communication unit (39) on the sign post side.

Further, the sign post side control section (32) has the center side communication information (38a) or the vehicle side communication information (2) based on the timed operation using the random timer (22A).
8a) is not completed in one sign post (30), the sign post (3)
0) When the transmission of the center side communication information (38a) or the vehicle side communication information (28a) in the sign post (30) in the next stage is executed, the completion is started from the position of the sign post (30) that received the vehicle number. The snow removal vehicle that did not do (2
0), so that the transmission of the center side communication information (38a) or the vehicle side communication information (28a) can be preferentially executed, a random timer (22A), a sign post side call name storage unit (34) and a sign post. The side wireless communication unit (38) and the sign post side wired communication unit (39) are connected.

Sign post side call name storage section (34)
Is connected to the sign post side control unit (32) so as to hold the call name information (15) for identifying each snow removal vehicle (20). The sign post-side call name storage unit (34) of the embodiment of the present invention specifically means a storage device that can be rewritten at any time that is controllable by the MPU. Recording device, magneto-optical recording device such as MO, EEPR
This can be achieved by various means such as a semiconductor memory device such as OM and RAM.

The sign post side wireless communication section (38) which is a wireless communication means, the center side communication information (3) between each sign post (30) and each vehicle side management means (21).
8a) or the vehicle-side communication information (28a) can be transmitted, and is connected to the sign post-side control unit (32).

The sign post side wireless communication unit (38) of the embodiment of the present invention can be specifically realized by a wireless circuit controllable by using an MPU, an MSK modem circuit, or the like. The sign post side wire communication unit (39), which is a wire communication means, communicates with the center side communication information (38a) between each sign post (30) and the center (12).
Alternatively, it is connected to the sign post side controller (32) so that the vehicle side communication information (28a) can be transmitted.

The sign post-side wired communication unit (39) of the embodiment of the present invention can be specifically realized by a telephone modem circuit, a network control circuit or the like which can be controlled using the MPU. Next, the configuration of the vehicle-side management means (21) of the embodiment of the invention will be described.

The vehicle-side management means (21) is provided for the snow removal vehicle (2
It is installed for each 0) and transmits the center side communication information (38a) concerning itself to grasp the instructed snow removal work contents and can perform the snow removal work based on the center side communication information (38a). , So that the vehicle-side communication information (28a), which is the operation status of the snow removal work, can be transmitted.

Vehicle side management means (2) of the embodiment of the present invention
1) can be specifically achieved by an arithmetic processing unit mainly composed of an MPU. Furthermore, the vehicle-side management means (21) provided in each snow removal vehicle (20) is shown in FIG.
As shown in, the vehicle side control unit (22), the vehicle side call name storage unit (24), the operation storage unit (25), and the display unit (26).
And a vehicle-side wireless communication unit (28) which is a wireless communication unit.

The configuration of the vehicle-side management means (21) according to the embodiment of the invention will be described in more detail. Vehicle side control unit (2
2) can prompt the user to receive the center side communication information (38a), understand the instructed snow removal work content, and promote the execution of the snow removal work based on the center side communication information (38a). The vehicle-side control unit (22), the vehicle-side call name storage unit (24), and the operation storage unit (25) are displayed so that the transmission of the vehicle-side communication information (28a), which is the operation status of the snow removal work, can be prompted. It is connected to the section (26), the vehicle-side wireless communication section (28), and various sensors (27).

As the various sensors (27), as shown in FIG. 3, an engine tachometer, a speedometer, a sprinkling operation meter, a snow removal operation meter, etc. can be used. The vehicle-side control unit (22) according to the embodiment of the present invention is specifically, an MPU.
Can be achieved by an arithmetic processing means mainly composed of.

Further, the vehicle side control section (22) generates a random time limit value which is a random number value within a predetermined range when receiving the access request information concerning itself, and executes a countdown of the random time limit value. Random timer (22A) is a timed means that can
It comprises.

Further, the vehicle side control section (22) has the center side communication information (38a) or the vehicle side communication information (28a).
When the transmission of the snow is completed, the snow removal vehicle (2
0) The vehicle number is connected so that the transmission of the vehicle number can be prompted. Further, when the vehicle side control unit (22) receives the access request information concerning itself, the vehicle side control unit (22) prompts the timed operation in the random timer (22A), waits for the end of the timed operation, and then the center side communication information concerning itself. (3
8a) can be prompted to grasp the content of the instructed snow removal work and to promote the snow removal work based on the center side communication information (38a), and the vehicle side communication information indicating the operation status of the snow removal work. In order to prompt the transmission of (28a), the vehicle side control unit (22), the vehicle side call name storage unit (24), the operation storage unit (25), and the display unit (2).
6), the vehicle side wireless communication unit (28) and various sensors (2
7) is connected to.

The random timer (22A) is a snow removal vehicle (20) which executes snow removal work by setting a value in an infinite loop counter.
The random time value is generated using the remainder when the remainder calculation is performed with the value of the number of vehicles. The value of the number of snowplow vehicles (20) can be transmitted to each vehicle side management means (21) via each sign post (30) and can be updated at any time, and the range of the random timer (22A) is automatically set. The vehicle-side call name storage unit (24) can store the call name information (15) for identifying each snow removal vehicle (20) so that the vehicle-side call name storage unit (24) can hold the call name information (15). It is connected to the control unit (22).

The vehicle-side call name storage unit (24) of the embodiment of the present invention specifically means a rewritable storage device that can be controlled by the MPU, and specifically, a hard disk or the like. Can be achieved by various means such as a magnetic recording device, a magneto-optical recording device such as MO, and a semiconductor memory element such as EEPROM or RAM.

The operation storage section (25) stores the snow removal vehicles (2
It is connected to the vehicle-side control unit (22) so that the operation information (25a) generated by the sensor (27) installed in 0) can be held. Specifically, the working storage unit (25) of the embodiment of the present invention means a rewritable storage device that can be controlled by the MPU at any time,
Specifically, it can be achieved by various means such as a magnetic recording device such as a hard disk, a magnetic optical recording device such as MO, and a semiconductor memory element such as EEPROM or RAM.

The vehicle side management means (21) is a display section (2) capable of displaying the center side communication information (38a) or the vehicle side communication information (28a) or indicating by voice.
6) is provided. The display unit (26) is connected to the vehicle-side control unit (22) so that the center-side communication information (38a) or the vehicle-side communication information (28a) can be displayed or voiced.

The display unit (26) of the embodiment of the present invention is M
Display means controllable by PU, specifically, a liquid crystal display installed in a personal computer, a CR
T, a plasma display, etc. can be used. The vehicle-side wireless communication unit (28), which is a wireless communication means, transmits the center-side communication information (38a) or the vehicle-side communication information (28a) between each sign post (30) and each vehicle-side management means (21). It is connected to a vehicle side control unit (22) so that transmission can be executed.

The vehicle-side wireless communication unit (28) of the embodiment of the present invention can be specifically realized by a wireless circuit controllable by using an MPU, an MSK modem circuit, or the like. Next, the operation of the embodiment of the invention will be described. FIG.
Is a snowplow management system (1) according to an embodiment of the present invention.
It is a schematic diagram explaining the specific example of operation of 0). FIG. 5 is a timing chart in the specific example shown in FIG.

First, the operation of the snow removal vehicle management system (10) according to the embodiment of the invention will be described. A snowplow vehicle management system (10) according to an embodiment of the present invention has a plurality of wireless devices installed at key points on a road (specifically, an expressway) while being connected to a center (12) by a wired line. The operation status of the snow removal work for each snow removal vehicle (20) can be collected via the sign post (30) which is a communication means, and the snow removal vehicle (20) can be collected according to the collected snow removal work operation status.
It is possible to instruct the details of snow removal work for each.

Further, the snow removal vehicle management system (10) of the embodiment of the present invention replaces the conventional IC card portion with the wireless communication means, and the radio waves from the snow removal vehicle (20) are installed in the sign post (30). By receiving the received information by the wireless communication means and transferring the received information to the processing device of the sensor (27) using the telephone line (14), real-time position information of the snow removal vehicle (20) can be obtained. it can. That is, transmission of information at a relatively short distance, such as between the sign post (30) and the snow removal vehicle (20), is performed by wireless communication using radio waves to the extent that a license for a wireless worker is not required. Transmission of information over a relatively long distance, such as between (30) and the center (12), is performed by wire communication using the telephone line (14) already installed on the expressway.

As a result, the information (specifically, vehicle side communication information (28a) or center side communication information (38a)) at a relatively short distance such as between the sign post (30) and the snow removing vehicle (20) is obtained. The transmission can be performed by wireless communication using radio waves to the extent that a license for a wireless worker is not required. Similarly, sign post (30)-
Transmission of information (specifically, vehicle-side communication information (28a) or center-side communication information (38a)) over a relatively long distance such as between the centers (12) is a telephone line (installed on the expressway). It is possible to execute by wired communication using 14).

In other words, it becomes possible to grasp in real time the operating status (for example, position information, snow removal progress status) of the snow removal vehicle (20) that performs urgent and highly dangerous work such as snow removal work. , And based on that, real-time processing of optimization of snow removal work instructions becomes possible,
An inexpensive and simple snow plow management system (10) can be realized.

The operation of the snow removal vehicle management system (10) according to the embodiment of the present invention will be described in more detail. The snow removal vehicle management system (10) is transmitted by the snow removal vehicle (20) that has completed transmission of the center side communication information (38a) or the vehicle side communication information (28a) based on the timed operation using the random timer (22A). Based on the vehicle number of the snow removal vehicle (20) and the position of the sign post (30) that received the vehicle number of the snow removal vehicle (20) that completed the transmission, the snow removal vehicle (20) that has completed the transmission and the transmission failure It is possible to identify the completed snow removal vehicle (20).

The snow-removed vehicle (20) whose transmission has been completed transmits the vehicle number of the snow-removed vehicle (20) to the center (12). The center (12) receives the vehicle number from the position of the sign post (30), and the snow removal vehicle (20) whose information has been transmitted and the snow removal vehicle (20) whose information has not yet been transmitted.
Can be identified.

The snowplow vehicle management system (10) uses the vehicle-side communication information (28a) and the installation position of the signpost-side management means (31) that has transmitted the vehicle-side communication information (28a) to determine the snowplow vehicle ( 20) It is possible to specify a work position on each road (specifically, a highway).

The wireless communication means respectively provided in the sign post side management means (31) and the vehicle side management means (21) are the sign post side management means (31) and the vehicle side management means (21). The transmission of the communication information on the center side (38a) or the communication information on the vehicle side (28a) can be executed during the period.

The wireless communication means is a low power wireless station, and can transmit a radio wave having a radio wave arrival range of about 100 m to about 300 m. A telephone line (14) as a wired line connects between each sign post side management means (31) and the center (specifically, arithmetic processing means mainly composed of MPU installed in the center) (12). Has been done.

Specifically, the wired communication means respectively provided in the sign post side management means (31) and the center (12) are provided between the sign post side management means (31) and the center (12). The center side communication information (38a) or the vehicle side communication information (28a) to be executed can be transmitted.

As a result, the information (specifically, the vehicle side communication information (28a) or the center side communication information (38a)) at a relatively short distance such as between the sign post (30) and the snow removal vehicle (20) is transmitted. The transmission can be performed by wireless communication using radio waves to the extent that a license for a wireless worker is not required. Similarly, sign post (30)-
Transmission of information (specifically, vehicle-side communication information (28a) or center-side communication information (38a)) over a relatively long distance such as between the centers (12) is a telephone line (installed on the expressway). It is possible to execute by wired communication using 14).

In other words, it becomes possible to grasp in real time the operating status (for example, position information, snow removal progress status) of the snow removal vehicle (20) that performs urgent and highly dangerous work such as snow removal work. , And based on that, real-time processing of optimization of snow removal work instructions becomes possible,
An inexpensive and simple snow plow management system (10) can be realized.

Next, the operation of the sign post side management means (31) of the embodiment of the invention will be described. The sign post management means (31) is provided for each sign post (30) and can control and manage the collection of vehicle side communication information (28a) which is the snow removal work operation status of each snow removal vehicle (20). , The collected vehicle-side communication information (28a)
The center-side communication information (38a), which is the content of the snow removal work for each snow removal vehicle (20), is transmitted to each snow removal vehicle (20) in accordance with the above, to instruct the snow removal work content for each snow removal vehicle (20). You can

The sign post management means (31) sends access request information to the snow removing vehicle (20) to the snow removing vehicle (20) from the sign posts (30) installed at regular intervals, and receives the snow removing request. After receiving the connection response from the vehicle (20), transmission of information between the sign post (30) and the snow removal vehicle (20) is performed.

By providing the sign post side management means (31), radio waves allocated with low priority (that is, licenses of radio workers such as low power radio waves having low information transmission capability and radio waves in low frequency band) Radio waves that do not require
Even if the above is used, it is possible to collect the operation status (for example, position information, snow removal progress status) of the snow removal vehicle (20) in real time, and it is possible to perform real time processing of optimization of snow removal operation instructions.

In other words, it is possible to grasp in real time the operating status (for example, position information, snow removal progress status) of the snow removal vehicle (20) that performs urgent and highly dangerous work such as snow removal work. It is possible to realize an inexpensive and simple snow plow management system (10).

Furthermore, it is possible to realize an inexpensive and simple snow removal vehicle management system (10) that enables real-time processing of optimization of snow removal work instructions based on this. More specifically, the sign post side management means (3 of the embodiment of the invention
The operation 1) will be described.

The sign post side control section (32) prompts the control management of the collection of the vehicle side communication information (28a) which is the snow removal work operation status of each snow removal vehicle (20), and the collected vehicle side communication information. By urging the center-side communication information (38a) corresponding to (28a) to be transmitted to each snow removal vehicle (20), it is possible to control the instruction of the snow removal work content for each snow removal vehicle (20).

Further, the sign post side control section (32) controls the center side communication information (38a) or the vehicle side communication information (2).
8a) The snow removal vehicle (20) whose transmission has been completed and the snow removal vehicle (20) whose transmission has been completed based on the vehicle number and the position of the sign post (30) which has received the vehicle number. It can be distinguished from the vehicle (20).

As a result, the center (12) determines the snow removal vehicle (20) whose transmission has not been completed, based on the transmission status of the sign post (30), and then the next sign post (3).
In 0), it is possible to preferentially specify the snow removal vehicle (20) for which the transmission has not been completed, and to execute the information transmission.

Further, the sign post side control section (32) has the center side communication information (38a) or the vehicle side communication information (2) based on the timed operation using the random timer (22A).
8a) is not completed in one sign post (30), the sign post (3)
0) When the transmission of the center side communication information (38a) or the vehicle side communication information (28a) in the sign post (30) in the next stage is executed, the completion is started from the position of the sign post (30) that received the vehicle number. The snow removal vehicle that did not do (2
It is possible to preferentially execute transmission of the center side communication information (38a) or the vehicle side communication information (28a) for 0).

Sign post side call name storage section (34)
Can hold call name information (15) for identifying each snow removal vehicle (20). The sign post-side wireless communication unit (38), which is a wireless communication means, connects the center-side communication information (38a) or the vehicle-side communication information (2) between each sign post (30) and each vehicle-side management means (21).
The transmission of 8a) can be carried out.

The sign post side wire communication unit (39) which is a wire communication means, the center side communication information (38a) between each sign post (30) and the center (12).
Alternatively, the transmission of the vehicle-side communication information (28a) can be executed. Next, the operation of the vehicle side management means (21) of the embodiment of the invention will be described.

The vehicle-side management means (21) controls the snow removal vehicle (2
It is installed for each 0) and transmits the center side communication information (38a) concerning itself to grasp the instructed snow removal work contents and can perform the snow removal work based on the center side communication information (38a). The vehicle-side communication information (28a), which is the operation status of the snow removal work, can be transmitted.

By providing the vehicle-side management means (21), the radio waves assigned with low priority (that is, the radio workers license such as low power radio waves having low information transmission capability and radio waves in the low frequency band) can be licensed. Even with the use of radio waves that are not required, the operating status of the snow removal vehicle (20) (for example, location information,
It is possible to collect the snow removal progress) in real time,
Real-time processing of optimization of snow removal work instructions becomes possible.

In other words, it is possible to grasp in real time the operating status (for example, position information, snow removal progress status) of the snow removal vehicle (20) that performs urgent and highly dangerous work such as snow removal work. It is possible to realize an inexpensive and simple snow plow management system (10).

Further, it is possible to realize an inexpensive and simple snow removal vehicle management system (10) which enables real-time processing of optimization of snow removal work instructions based on the above. The operation of the vehicle-side management means (21) according to the embodiment of the invention will be described in more detail. The vehicle-side control unit (22) prompts the reception of the center-side communication information (38a) regarding itself, grasps the instructed snow removal work content, and then the center-side communication information (3).
It is possible to promote the execution of the snow removal work based on 8a) and also to transmit the vehicle-side communication information (28a) that is the operation status of the snow removal work.

Further, the vehicle side control section (22) uses the center side communication information (38a) or the vehicle side communication information (28a).
When the transmission of the snow is completed, the snow removal vehicle (2
It is possible to prompt the transmission of the vehicle number of 0). Further, when the vehicle side control unit (22) receives the access request information concerning itself, the vehicle side control unit (22) prompts the timed operation in the random timer (22A), waits for the end of the timed operation, and then the center side communication information concerning itself. It is possible to prompt reception of (38a), grasp the content of the instructed snow removal work, and promote execution of the snow removal work based on the center side communication information (38a), and communication on the vehicle side that is the operation status of the snow removal work. The transmission of information (28a) can be prompted.

Random timer (22
A) is capable of generating a random time limit value which is a random number value within a predetermined range when receiving the access request information concerning itself and performing a countdown of the random time limit value. A random timer (22A) Can generate a random time limit value by using the remainder when the remainder is calculated with the value of the number of snow-removing vehicles (20) that perform snow-removing work with a value in the infinite loop counter.

When dispatching for snow removal work, the center (1
2) Snow removal vehicle (20) dispatched via wireless communication means
The range of the random timer (22A) can be automatically set by transmitting the number of vehicles to each vehicle side management means (21). Further, when it is necessary to increase or decrease the number of snow removal vehicles (20) to be dispatched depending on the progress of the snow removal work, the center (12) updates the number of snow removal vehicles (20) to be dispatched to the sign post (30). The information is transmitted, and the information on the number of the snow removal vehicles (20) to be dispatched in each vehicle-side management means (21) is updated.

As a result, the random timer (22A)
The random time limit value can be optimized, and the number of snow removal vehicles (20) whose transmission has not been completed can be minimized.
The vehicle side call name storage unit (24) is used for each snow removal vehicle (20).
It is possible to hold call name information (15) for identifying the.

The operation storage section (25) stores the snow removal vehicles (2
The operation information (25a) generated by the sensor (27) installed in 0) can be held. Display (26)
Can indicate the communication information on the center side (38a) or the communication information on the vehicle side (28a) by display or voice.

A vehicle-side wireless communication unit (2
8) is center side communication information (38a) between each sign post (30) and each vehicle side management means (21).
Alternatively, the transmission of the vehicle-side communication information (28a) can be executed. Next, a specific example of the operation of the snow removal vehicle management system (10) according to the embodiment will be described.

As shown in FIG. 5, when a certain number of snow removal vehicles (20A) to (20E) enter the radio wave arrival area in order, the sign post (30) and the snow removal vehicle (2) are sequentially installed.
Center side communication information (38a) in 0A) to (20E)
Alternatively, the transmission of the vehicle-side communication information (28a) can be executed.

When the snow removal vehicles (20A) to (20E) enter the radio wave arrival area in an irregular order, or when the number of snow removal vehicles (20) entering the radio wave arrival area is irregular,
By following the following procedure {1} to procedure {5}, the center side communication information (38a) or the vehicle side communication information (2
The transmission of 8a) can be carried out.

Procedure {1}: Signpost side management means (3
1) sends access request information to the snow removal vehicle (20) to the snow removal vehicle (20) from the sign posts (30) installed at regular intervals, and receives a connection response from the snow removal vehicle (20) that receives the access request information. After that, information is transmitted between the sign post (30) and the snow removal vehicle (20).

Procedure {2}: The vehicle side control section (22) prompts the timed operation in the random timer (22A) when receiving the access request information concerning itself. Procedure {3}: The random timer (22A) sets the value in the infinite loop counter to perform the snow removal work (20)
A random time limit value is generated using the remainder when the remainder calculation is performed with the value of the number of vehicles.

When the snow removal work is carried out, the center (12) transmits the number of snow removal vehicles (20) dispatched via the wireless communication means to each vehicle side management means (21) so that a random timer is provided. The range of (22A) can be automatically set. At the same time, it is possible to prompt the transmission of the vehicle-side communication information (28a), which is the operation status of the snow removal work.

Then, the random timer (22A)
Execute a countdown of the random time limit value. Procedure {4}: The vehicle-side control unit (22) waits for the end of the timed operation, and then the center-side communication information (38) concerning itself.
A) is urged, the contents of the instructed snow removal work are grasped, and execution of the snow removal work based on the center side communication information (38a) is urged.

As a result, a plurality of snow removing vehicles (2
It is possible to prevent 0) from accessing the same sign post (30), and it is possible to avoid interference during transmission. In addition, the sign post side control unit (32)
The transmission is completed based on the vehicle number of the snow removal vehicle (20) whose transmission of the center side communication information (38a) or the vehicle side communication information (28a) has been completed and the position of the sign post (30) which has received the vehicle number. The removed snow removal vehicle (20) and the snow removal vehicle (20) whose transmission has not been completed are identified.

As a result, the center (12) determines the snow removal vehicle (20) whose transmission has not been completed, based on the transmission status of the sign post (30), and then the next sign post (3).
In 0), it is possible to preferentially specify the snow removal vehicle (20) for which the transmission has not been completed, and to execute the information transmission.

Procedure {5}: In order to avoid the snow removal vehicle (20) that passes through the radio wave reaching area without performing communication even when performing the procedure {1} to procedure {4}. The sign post side control unit (32) controls the center side communication information (38a) or the vehicle side communication information (28a) based on the timed operation using the random timer (22A).
Is not completed in the one sign post (30), the center side communication information (38a) or the vehicle side communication information in the sign post (30) next to the one sign post (30). The sign post (30) that received the vehicle number when performing the transmission of (28a)
The transmission of the center-side communication information (38a) or the vehicle-side communication information (28a) to the snow removal vehicle (20) that has not been completed is preferentially performed from the position.

For example, as shown in FIG. 5, when four snow removal vehicles (20A) to (20D) enter the radio wave arrival area all at once and receive the access request information of FIG. 5, three snow removal vehicles The sign post side control unit (32) of each of (20B) to (20D) transmits the center side communication information (38a) or the vehicle side communication information (28a) based on the timed operation using the random timer (22A). It can be completed in one sign post (30).

The sign post-side control unit (32) of the one sign post (30) and the vehicle number of the snow removing vehicle (20) for which the transmission of the center side communication information (38a) or the vehicle side communication information (28a) has been completed. Based on the position of the sign post (30) that has received the vehicle number, the snow removal vehicle (20) that has completed transmission and the snow removal vehicle (20) that has not completed transmission are identified.

The center (12) has a sign post (3
0) The snow removal vehicle (20) whose transmission has not been completed is determined based on the transmission status in (0), and when the access request information of FIG. Is preferentially specified to execute information transmission.

As described above, according to the snow removal vehicle management system (10) of the embodiment of the present invention, information at a relatively short distance between the sign post (30) and the snow removal vehicle (20) (specifically, Specifically, the vehicle side communication information (28
The transmission of a) or the communication information (38a) on the center side can be performed by wireless communication using radio waves that do not require a license of a wireless worker.

Similarly, transmission of information (specifically, vehicle side communication information (28a) or center side communication information (38a)) in a relatively long distance such as between the sign post (30) and the center (12). Can be performed by wire communication using the telephone line (14) already installed on the expressway.

As a result, radio waves assigned with low priority (that is, radio waves with low information transmission capability such as low power radio waves and radio waves in a low frequency band that do not require a license of a wireless worker) are used. Even in this case, it is possible to collect the operation status (for example, position information, snow removal progress status) of the snow removal vehicle (20) in real time, and it is possible to perform real time processing for optimizing snow removal operation instructions.

That is, it is possible to grasp in real time the operating status (for example, position information, snow removal progress status) of the snow removal vehicle (20) that performs urgent and highly dangerous work such as snow removal work. It is possible to realize an inexpensive and simple snow plow management system (10).

Furthermore, it is possible to realize an inexpensive and simple snow removal vehicle management system (10) that enables real-time processing of optimization of snow removal work instructions based on the above.

[0106]

According to the snow removal vehicle management system of the present invention, the transmission of information at a relatively short distance such as between a sign post and a snow removal vehicle uses radio waves that do not require a license of a wireless worker. Radio waves allocated with low priority by executing by wireless communication (that is, radio waves that do not require a license for radio workers such as low-power radio waves with low information transmission capability and radio waves in the low frequency band) By using, it is possible to collect the operation status (for example, position information, snow removal progress status) of the snow removal vehicle in real time, and it is possible to perform real time processing for optimizing snow removal work instructions.

In other words, it becomes possible to grasp in real time the operating status (for example, position information, snow removal progress status) of a snow removal vehicle that performs urgent and highly dangerous work such as snow removal work. Based on this, it is possible to realize an inexpensive and simple snow removal vehicle management system that enables real-time processing of optimization of snow removal operation instructions.

Similarly, by transmitting the information over a relatively long distance such as between the sign post and the center by wire communication using a telephone line already installed on the expressway, it is possible to perform an emergency such as snow removal work. It is possible to grasp in real time the operating status (for example, location information, snow removal progress status) of a snow removal vehicle that performs dangerous and dangerous work, and based on that, real time optimization of snow removal operation instructions. It is possible to realize an inexpensive and simple snow removal vehicle management system that enables processing.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a snow removal vehicle management system according to an embodiment of the present invention.

FIG. 2 is a functional block diagram of the sign post side management means in the snow removal vehicle management system according to the exemplary embodiment of the present invention.

FIG. 3 is a functional block diagram of vehicle-side management means in the snow removal vehicle management system according to the exemplary embodiment of the present invention.

FIG. 4 is a schematic diagram illustrating a specific example of the operation of the snow removal vehicle management system according to the exemplary embodiment of the present invention.

5 is a timing chart in the specific example shown in FIG.

FIG. 6 is a functional block diagram showing a conventional snow removal vehicle management system.

[Explanation of symbols]

 10 Snow Plow Management System 12 Center 14 Telephone Line 15 Call Name Information 20 Snow Purge Vehicle 21 Vehicle Side Management 22 Vehicle Side Control 22A Random Timer 24 Vehicle Side Call Name Storage 25 Operating Memory 25a Operating Information 26 Display 27 Sensor 28 Vehicle-side wireless communication unit 28a Vehicle-side communication information 30 Signpost 31 Signpost-side management means 32 Signpost-side control unit 34 Signpost-side call name storage unit 38 Signpost-side wireless communication unit 38a Center-side communication information 39 Signpost-side wired Communications department

Claims (17)

[Claims] 1. The operation status of snow removal work for each snow removal vehicle can be collected through a sign post which is a wireless communication means provided in a plurality of points on a road while being connected to a center by a wired line. A snowplow vehicle management system capable of instructing the details of the snowplow work for each snowplow vehicle according to the collected snowplow work operation status, which is provided for each of the sign posts and for each snowplow vehicle. It is possible to control and manage the collection of vehicle-side communication information that is the snow removal work operation status, and to collect the center-side communication information that is the snow removal work content of each snow removal vehicle according to the collected vehicle-side communication information for each snow removal vehicle. By transmitting to the sign post side management means capable of instructing the details of the snow removal work for each snow removal vehicle; -Side communication information is transmitted to grasp the contents of the instructed snow removal work, and snow removal work can be executed based on the center side communication information, and vehicle side communication information that is the operation status of the snow removal work is transmitted. A snow removal vehicle management system, comprising: 2. A work position on the road for each snow removal vehicle is specified based on the vehicle side communication information and the installation position of the sign post side management means that has transmitted the vehicle side communication information. The snow removal vehicle management system according to claim 1. 3. The transmission of the center side communication information or the vehicle side communication information executed between each of the sign post side managing means and each of the vehicle side managing means is performed by each of the sign post side managing means and the The snowplow vehicle management system according to claim 1 or 2, wherein the snowplow vehicle management system is executed via a wireless communication unit that is installed in each vehicle-side management unit. 4. The wireless communication means according to claim 3, wherein the wireless communication means is a low power wireless station, and has a radio wave reach of about 100 m to about 3.
A snowplow management system characterized by being able to transmit radio waves in the range of 00 m. 5. The wired line is a telephone line, and each of the signpost-side management means and the center are connected by a telephone line as the wired line, and each of the signpost-side management means and the center. The transmission of the communication information on the center side or the communication information on the vehicle side performed between the center side communication means and the vehicle side communication information is executed via the sign post side management means and the wired communication means respectively provided in the center. The snow removal vehicle management system according to claim 1. 6. The vehicle-side communication information is access request information to the center, call name information for identifying each snow removal vehicle, operation information indicating a progress status of snow removal work of each snow removal vehicle, or The snow removal vehicle management system according to claim 1, comprising at least one of emergency information from each snow removal vehicle to the center. 7. The center-side communication information is access request information to each of the snow removal vehicles, the call name information, snow removal work content instruction information for each snow removal vehicle, or emergency information from the center to the corresponding snow removal vehicle. The snowplow management system according to claim 1, wherein the snowplow management system comprises at least one of the above. 8. The vehicle-side management means comprises a display unit capable of displaying or instructing the center-side communication information or the vehicle-side communication information by a voice or a voice. Snowplow management system described in. 9. The signpost-side management means provided in each of the signposts prompts control and management of collection of vehicle-side communication information that is the snow removal work operation status of each snowplow vehicle, and the collected vehicle side. A sign post-side control unit capable of executing instruction control of snow removal work content for each snow removal vehicle by urging transmission of the center side communication information according to communication information to each snow removal vehicle; A sign post side call name storage unit capable of holding call name information for identifying a snowplow vehicle, and the center side communication information or the vehicle side communication between each of the sign posts and each of the vehicle side management means. A wireless communication unit on the sign post side, which is the wireless communication means capable of executing information transmission, and a front part between each of the sign posts and the center. 9. The snow removal system according to claim 1, further comprising: a sign post-side wire communication unit that is the wire communication unit capable of executing transmission of the center-side communication information or the vehicle-side communication information. Car management system. 10. The vehicle-side management means provided in each of the snow removal vehicles prompts the reception of the center-side communication information relating to the self-device, grasps the instructed snow removal work contents, and outputs the information to the center-side communication information. A vehicle-side control unit that can promote the execution of snow removal work based on the above, and can promote the transmission of the vehicle-side communication information that is the operating status of the snow removal work, and call name information for identifying each snow removal vehicle A vehicle-side call name storage unit capable of holding the operation information, an operation storage unit capable of holding operation information generated by a sensor installed in each snow removal vehicle, and the center-side communication information or the vehicle-side communication information. A display unit that can be instructed by display or voice, the center side communication information between the sign posts and the vehicle side management means, or Snowplow management system according to claims 1-9, characterized in that it comprises an, and the vehicle-side wireless communication unit is the wireless communication means capable of performing the transmission of both sides communication information. 11. The vehicle-side control unit according to claim 10, when receiving the access request information relating to the self, generates a random time limit value that is a random number value within a predetermined range, and the random time limit. It comprises a random timer which is a timed means capable of performing a countdown of a value, when receiving the access request information concerning the self, prompts a timed operation in the random timer and waits for the end of the timed operation. In addition, it is possible to prompt the reception of the center side communication information concerning the self, grasp the content of the instructed snow removal work, and promote the execution of the snow removal work based on the center side communication information, and the operation of the snow removal work. The snow removal according to any one of claims 1 to 10, wherein transmission of the vehicle-side communication information, which is a situation, can be prompted. Car management system. 12. The random timer according to claim 11, wherein the random time limit value is generated by using a remainder when a remainder is calculated by calculating a value in an infinite loop counter with a value of the number of snow-removing vehicles that perform snow-removing work. A snowplow management system characterized by that. 13. A random timer, wherein the value of the number of snow-pulled vehicles according to claim 11 or 12 can be transmitted to each vehicle-side management means via each of the sign posts and can be updated at any time. The snow plow management system is characterized in that the range of can be set automatically. 14. The vehicle-side control unit, when the transmission of the center-side communication information or the vehicle-side communication information is completed, can prompt the transmission of the vehicle number of the snow-removed vehicle that has completed the transmission. The snow removal vehicle management system according to claim 1, which is characterized in that. 15. The sign post-side control unit is based on the vehicle number of the snow-removed vehicle for which the transmission of the center-side communication information or the vehicle-side communication information has been completed and the position of the sign post that has received the vehicle number. The snow removal vehicle management system according to claim 1, wherein the snow removal vehicle for which the transmission is completed and the snow removal vehicle for which the transmission is not completed can be identified. 16. The signpost-side control unit according to claim 15, wherein transmission of the center-side communication information or the vehicle-side communication information based on a timed operation using the random timer is completed in one signpost. If there is not, and when the transmission of the communication information on the center side or the communication information on the vehicle side in the next sign post of the one sign post is executed, the completion from the position of the sign post that received the vehicle number. A snowplow vehicle management system, wherein transmission of the center side communication information or the vehicle side communication information to a snowplow vehicle that has not been performed can be preferentially executed. 17. The snow removal vehicle which has been transmitted by the snow removal vehicle which has completed transmission of the center side communication information or the vehicle side communication information based on the timed operation using the random timer, and the snow removal vehicle which has completed the transmission. The snow removal vehicle for which the transmission has been completed and the snow removal vehicle for which the transmission has not been completed can be identified based on the position of the sign post that received the vehicle number of the vehicle. Snowplow management system described in.