JP2991322B2 - Vehicle location management method in the controlled area - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for managing the location of a vehicle in a controlled area, and more particularly to a method for managing the location of a vehicle running in a large controlled area having a ceiling.

[0002]

2. Description of the Related Art Conventionally, the management of construction vehicles and the like in a management area such as a tunnel work site is performed by entering and exiting management at an entrance and exit of the management area. Controls entry and exit.

[0003]

However, according to the above-mentioned access control method using a permit or the like, it is necessary to keep a guard or the like at the entrance of the control area, and it may take time to check the permit or the like. This is a problem that it is unknown where the vehicle is located in the controlled area because the control is only for entering and exiting.

[0004] In order to control the location of vehicles in the control area, the control area is divided into a plurality of sub-areas, the movement between the sub-areas is limited to only predetermined passports, and the passage at each passport is restricted. A method of grasping the area where the vehicle is located by management is conceivable. However, it is not preferable in terms of work efficiency to limit the movement of the vehicle to only a predetermined passage at a tunnel work site or the like.

Accordingly, an object of the present invention is to provide a location management method for managing the location of a vehicle in a management area without narrowing a vehicle traveling path.

[0006]

With reference to the embodiment shown in FIG. 1, the method for managing the location of a vehicle in a controlled area according to the present invention comprises the steps of:
A transmission card 6 for transmitting an identification signal at regular non-signal time intervals to each vehicle 3 traveling in the control area 1 with
The management area is divided into a plurality of small areas 1a, and one of the vehicles 3 can move on the vehicle traveling path 2 between the small areas 1a and at the boundary between the small area 1a and the outside of the management area 1. The vehicle is divided into one or more lanes 4 having a width.
The moving direction detection unit 8 is provided in the directional antennas 7 coverage ceiling 15 is constant distance along substantially the lane 4 of each lane 4 provided, the vehicle 3 before and after the antenna
Limiting the speed as the traveling distance of the vehicle 3 within the no-signal time is within the reception range of the antenna 7, the small sections
The approach of each vehicle 3 in 1a is performed at the boundary part connected to the subsection 1a.
Between the identification signal of the vehicle 3 and the movement into the small area 1a.
The exit of each vehicle 3 from each small area 1a is determined by detection.
The identification signal of the vehicle 3 at the boundary part connected to the small area 1a
And the movement outside the sub-area 1a
Thus, the existence or non-existence of a vehicle in each small area is determined.

[0007] Preferably, a plurality of antennas 7 are provided in parallel on the ceiling 15 of each lane 4 at the boundary in the traveling direction of the vehicle 3, and an identification signal is detected by a logical sum of outputs of the plurality of antennas 7. .

[0008]

[Effect] The action of the present invention is evaluated by NATM (New Austrian Tunne).
A description will be given with reference to the embodiment of FIG. 1 applied to a mountain tunnel construction site having a large cross section by the lling method. However, the management area to which the present invention can be applied is not limited to a tunnel construction site, but can be applied to a work site with a ceiling or the like. In order to mutually identify a plurality of vehicles 3 entering and exiting the management area 1, a transmission card 6 for intermittently transmitting identification signals such as different ID numbers is attached to each vehicle 3. Calling card 6
May have a known structure for automatically transmitting an identification signal as a weak radio wave at fixed time intervals.

As shown in FIG. 1, for example, a plurality of small sections 1a are arranged in a row along a traveling direction of a traveling path 2 of a vehicle 3 as shown in FIG.
One or more lanes 4 are provided on the traveling path 2 at the boundary between the outside of the management area 1 and the small area 1a and at the boundary between the adjacent small areas 1a. The vehicle 3 traveling on the traveling path 2 in each sub-section 1a has a lane 4 at the boundary.
Move to the traveling path 2 in the adjacent small section 1a via any of the above. At this time, for example, between the adjacent small areas 1a ₁ and 1a _{2 in} FIG. 1, the tunnel moves from the entrance side to the depth side of the management area 1 which is a tunnel in this case, or conversely, moves from the depth side to the entrance side. Even when a plurality of lanes 4 are set at the boundary, the lanes 4 can be formed adjacent to each other so that one vehicle can move. It does not decrease by the setting of. Further, the moving direction detecting means provided on the lane 4 can be installed without substantially increasing the lane width. Therefore, even after the lane 4 is set, the vehicles 3 can move in parallel between the adjacent small sections 1a by the same number at the same time as before the lane 4 is set. After the lane 4 is set, each vehicle 3 travels along the lane 4, but the number of vehicles 3 moving simultaneously between the adjacent small sections 1 a can be selected within the width of the travel path 2.
Is not affected by the setting of the lane 4.

A moving direction detecting means 8 is provided on each lane 4 at the boundary, and a directional antenna 7 is provided on a ceiling 15 of each lane 4.
The vehicle 3 is identified by the directional antenna 7, and the moving direction of the vehicle 3 is detected by the detecting means 8. The use of the directional antenna 7 whose reception range is substantially only one lane 4 is such that when a plurality of identification signals are received simultaneously, the identification signal for the vehicle 3 whose moving direction has been detected by the detection means 8 is specified. This is to prevent from becoming impossible. Since the transmission of the identification signal from the transmission card 6 is intermittent, the vehicle 3 is connected to the antenna 7 while the identification signal is not transmitted from the transmission card 6.
In order to avoid passing through the reception range of the vehicle 7, the distance between the vehicle 3 and the antenna 7 is set so that the traveling distance of the vehicle 3 within the non-signal time of the transmitting card 6 is within the reception range of the antenna 7.
Speed limit.

The moving direction detecting means 8 in the illustrated example has a pair of photoelectric switch devices 9 integrated with a light source on one side of the lane 4.
The light source of each photoelectric switch device 9 emits two light beams crossing the lane 4 toward the opposite reflector 10 via the lane 4 and reflects the reflected light from the reflector 10 crossing the lane 4 into each photoelectric switch. It is detected by the photoelectric switch of the device 9. The two reflected light beams intersect the lane 4 at positions separated from each other in the moving direction of the vehicle 3, and when the vehicle 3 passes through each lane 4, the two reflected light beams are sequentially blocked, and the pair of photoelectric switch devices 9 are blocked. The moving direction of the vehicle 3 can be detected from the detection order. For example, when the vehicle 3 moves from the small area 1a ₂ to the small area 1a ₃ ,
First, the reflected light on the small area 1a ₂ side is cut off, and then the small area 1a ₃
Side reflected light is blocked. The vehicle 3 from the order of the light blocking can be detected that has entered into small sections 1a ₃ exits subregions 1a _2. However, in the present invention, the photoelectric switch device 9 including the reflection plate 10 is used.
However, the present invention is not limited to this.

The identification signal detected by the directional antenna 7 in each lane 4 is associated with the direction signal of the detection means 8,
If the pair of identification signals and the direction signal are transmitted by the transmission device 26 to, for example, a management office or the like, the management office or the like can manage movement between the small areas 1a for each vehicle 3. For example, the movement detection of the direction entering each small area 1a is recorded for each vehicle 3, and for the same vehicle 3, the movement detection of the direction entering the specific small area 1a is detected by the movement detection of the direction exiting from the specific small area 1a. If the small section 1a in which the offset has been detected and the latest unmoved entry direction has been detected for each vehicle 3 is specified, the location of each vehicle 3 in the management area 1 at a certain point in time can be managed.
According to the present invention, it is possible to manage the location of each vehicle 3 in the management area 1 by detecting the movement only in the above-described boundary portion without continuously monitoring the position in the management area 1.

Thus, the object of the present invention is to provide a "location management method for managing the location of a vehicle in a managed area without narrowing the vehicle running path".

If a plurality of antennas 7 are provided in parallel on the ceiling 15 of each lane 4 at the boundary in the traveling direction of the vehicle 3 and the identification signal is detected by the logical sum of the outputs of the plurality of antennas 7, there is no problem. Even when one antenna 7 cannot receive the identification signal from the calling card 6 due to the above reason, it can be compensated by receiving the identification signal with the other antenna 7,
Omission of reception can be prevented.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The photoelectric switch device 9 of the embodiment shown in FIG. 1 outputs an ON signal when light is detected, and outputs an OFF signal when light detection is interrupted, that is, when light is blocked. The direction detecting means 8 compares the time when the pair of photoelectric switch devices 9 is switched from the ON signal to the OFF signal, and detects the moving direction of the vehicle 3 from the order. After the vehicle 3 has passed the lane 4, the output of the photoelectric switch device 9 returns from the OFF signal to the ON signal.
If the photoelectric switch device 9 does not return to the ON signal for some reason, subsequent detection of the moving direction becomes impossible. The direction detecting means 8 in the illustrated example has an abnormality detecting means for measuring the output duration of the OFF signal of the photoelectric switch device 9 and detecting an abnormality when the duration exceeds a predetermined time,
When the abnormality detection unit detects an abnormality, an abnormality signal can be transmitted to, for example, a management office or the like via the transmission device 26.

In the embodiment shown in FIG. 1, a sidewalk 5 is provided adjacent to the traveling path 4 of the vehicle 3, and a detection unit 25 for detecting the movement of the pedestrian 3a between the small sections 1a is provided on the sidewalk 5. Each pedestrian 3a
The identification card 6a which can be read separately is carried, and the identification means 6a of the detection unit 25 reads the identification card 6a to identify the pedestrian 3a, and the movement direction detection means 8a of the detection unit 25
To detect the moving direction of the pedestrian 3a. Reference numeral 13 in the figure
Shows a helmet to which the identification card 6a is attached. If the detection unit 25 is provided on the sidewalk at the boundary between the small sections 1a, the location of the pedestrian 3a in the management area 1 can be managed as in the case of the vehicle 3. However, detection unit 25 for pedestrian 3a
Is not essential to the invention. Further, the small area for managing the location of the pedestrian 3a can be provided independently of the small area for managing the location of the vehicle 3.

FIG. 2 shows an example in which the identification signal received by each antenna 7 and the direction detection signal by the detection means 8 are transmitted from a transmission device 26 provided at each boundary portion to a transmission destination such as a management office via the transmission line 12. 1 shows a block diagram of an example of a transmission system for transmitting.
In order to identify signals from a plurality of antennas 7, an identification number is assigned to each antenna 7, and the identification number is included in the transmission signal. Reference numeral 24 in the figure denotes a multiplexer that switches the antennas 7 at a plurality of boundaries. In the illustrated transmission block diagram, the signals from the reading unit 7a and the direction detecting unit 8a of the detection unit 25 are also transmitted to the management office or the like via the transmission path 12, so that
It is possible to manage the location of the pedestrian 3a together with the vehicle 3 in a management office or the like. The reference numeral 11 in the figure indicates the detection unit 25.
And a controller that is connected to the display unit and performs reading confirmation display of the reading means 7a, display of a passer's name and affiliation, message display, entry status display, and the like.

FIG. 3 shows an example of a screen displaying the location management status of the management area 1 according to the present invention. The inside of the tunnel, which is the management area 1, is divided into three sub-areas, a face section, a center (sliding form) section, and an entrance section, and the number of vehicles 3 and the number of pedestrians 3a are displayed for each sub-area.

[0019]

As described in detail above, the method for managing the location of a vehicle in a controlled area according to the present invention attaches an identification signal intermittent transmission card to vehicles entering and exiting the controlled area, and a plurality of small areas in the controlled area. In the vehicle running path at the boundary between the sub-areas and between the sub-areas and the outside of the management area, lanes are provided with a width that allows vehicles to move one by one, and a moving direction detection means is installed in each lane. A directional antenna is mounted on the ceiling of each lane, and the presence or absence of each vehicle in each small area is determined by detecting the direction of movement in each lane and detecting the identification signal of the antenna.

(1) It is possible to manage the location of the vehicle in the management area without narrowing the vehicle running path in the management area. (2) Since the location is managed from the identification signal and the moving direction automatically detected in each lane at each boundary, it is not necessary to continuously monitor the position of each vehicle. (3) Expansion of the management area can be dealt with by adding small areas.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of one embodiment of the present invention.

FIG. 2 is an example of a block diagram of a signal transmission line according to the present invention.

FIG. 3 is an example of a screen display of a location management status according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Management area 1a Small area 2 Runway 3 Vehicle 3a Pedestrian 4 Roadway 5 Sidewalk 6 Sending card 6a Identification card 7 Antenna 7a Reading means 8, 8a Moving direction detecting means 9 Photoelectric switch device 10 Reflector 11 Controller 12 Transmission path 13 Helmet 15 Ceiling 24 Multiplexer 25 Sensing unit 26 Transmission device 27 Computer.

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kikuo Koseki Kashima Construction Co., Ltd. 1-2-7 Moto-Akasaka, Minato-ku, Tokyo (56) References JP-A-5-128339 (JP, A) JP-A Sho 56-164641 (JP, A) JP-A-6-59036 (JP, A) JP-A-5-197856 (JP, A) JP-A-5-242395 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G08G 1/00-1/16

Claims (4)

(57) [Claims] 1. A transmitting card for transmitting an identification signal every fixed non-signal time is attached to each vehicle traveling in a control area with a ceiling, and the control area is divided into a plurality of small areas.
The vehicle travel path at the boundary between the small areas and between the small area and the outside of the management area is partitioned into one or more lanes of a width that allows one vehicle to move, and a vehicle movement direction detecting unit is provided for each lane. Providing a directional antenna whose reception range is substantially a fixed distance along the lane on the ceiling of each lane,
The speed of the vehicle before and after the antenna is limited so that the traveling distance of the vehicle within the no-signal time is within the antenna reception range, and the approach of each vehicle in each sub-region at a boundary portion connected to the sub-region is limited. The detection of the identification signal of the vehicle by the antenna and the detection of the movement into the small area are determined, and the exit of each vehicle from each small area is determined by the antenna at the boundary portion connected to the small area. Inspection
A vehicle location management method in a management area in which the presence or absence of a vehicle in each small area is determined by determining whether the vehicle has moved out of the small area. 2. The location management method according to claim 1, wherein
A vehicle location management method in a control area where the control area is a control area of a tunnel work site . 3. The location management method according to claim 1, wherein
Said moving direction detection means on the lane and light crossed and 2 rays separated in the moving direction of the vehicle and the photoelectric switch pair for their light detector provided, wherein said photoelectric switch pairs blocking of the 2 beams by vehicle is A method for managing the location of a vehicle in a management area, comprising detecting a moving direction of the vehicle from an order of detection. 4. The location management method according to claim 3, wherein a duration of the light-blocking detection operation by each of the photoelectric switches is measured, and an abnormality of the photoelectric switch is detected when the duration exceeds a predetermined time. A vehicle location management method in a management area provided with means.