JP3442213B2 - Equipment specifying method and system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication service, an electric power service, and the like, for performing maintenance, inspection, construction work, etc. on an outside facility installed at a place away from a business place. The present invention relates to a facility identifying method and a system for searching for the location of the off-site facility and extracting management information about the off-site facility.

When performing maintenance, inspection, service work requested by a customer, work associated with breakdown repair, emergency work associated with a disaster, etc., targeting outside facilities, search for the location of the target facility. Or, it is necessary to extract information about the facility, such as facility content or history.

In the past, when searching for equipment, the equipment was specified based on a map or an address, and finally by reading and confirming the equipment name from a number tag attached to the equipment. However, such a method is extremely inefficient because it is predicted by a map or an address, and a search is performed while confirming the equipment number. Recently, particularly in the communication service industry, there has been a problem that the service area of one business office is widened by the integration of business offices and the search time is particularly increased in an uninformed area.

Further, in the case of extracting the necessary information about the facility outside the facility, until now, the key items such as the facility name and the facility number are checked by the number tag attached to the target facility, and then the information is stored. It was necessary to access the existing database and extract the information. However, the method of identifying the equipment by reading the equipment number as described above has a problem that it takes a long time to confirm the number, especially in the work at night or in bad weather.

[0005]

SUMMARY OF THE INVENTION In view of the above situation, an object of the present invention is to simply and efficiently search for a target facility from a large number of widely scattered facilities, or to simply and efficiently Another object of the present invention is to provide a facility specifying method and a system therefor for extracting information about a target facility.

[0006]

The equipment identifying method of the present invention is represented by position data represented by latitude and lightness of equipment groups collected and accumulated in advance and latitude and longitude measured at a work site. The position data of the target equipment that is assumed to be a work point is measured, and if these position data are within a certain measurement area, they are automatically collated and are the target of the search or information extraction work. It is characterized by specifying the equipment.

In the present invention, when the latitude and longitude of the work point are measured at the work site, the position of the moving vehicle is first measured, and then the relative position of the work point with respect to the moving vehicle is measured. A method of calculating the latitude and longitude of the work point from the obtained relative position may be used. When measuring the position of a moving vehicle, GPS (Glob
al Positioning System) device.

Therefore, the system of the present invention comprises a mobile vehicle equipped with a database storing facility management information, and means for accessing the database, a GPS device and a distance and direction measuring device using laser pulse light. It is characterized by

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram for explaining an embodiment of the system of the present invention. In the figure, 1 is an off-site work vehicle, 2 is a device for measuring the position and traveling direction mounted on the off-site work vehicle 1, 3 is a device for measuring the distance and direction from the off-site work vehicle 1 to the work point, Reference numeral 4 is a fixing device for the distance / direction measuring device 3, 5 is a computer terminal device for processing measured values, 6 is a communication terminal device installed in the off-site work vehicle 1, and 7 is a differential GPS correction information receiving terminal device. .

Further, 8 is a center station, 9 is a computer terminal device for managing facility information, 10 is a communication terminal device installed in the center station 8, 11 is a differential GPS position reference station, and 12 is a differential. A GPS correction information transmitting terminal device, 13 is a GPS satellite, and 14 is a target facility.

In this embodiment, as the device 2 for measuring the position and the traveling direction mounted on the off-site work vehicle 1, the GP is used.
A car navigation device that can measure the position and traveling direction of the vehicle using an S sensor, an optical gyro, a geomagnetic sensor, an axle rotation sensor, etc. was used. In particular, G
The PS sensor is preferably capable of performing differential GPS positioning using the center station as the position reference station.
In this case, an antenna of the differential GPS device is installed at a measurement point whose position is known, and the result of verifying the position measurement accuracy of this device is as a result of fluctuation within 2 and a half hours,
Latitude standard deviation 0.046 seconds, measurement width 0.286 seconds,
A standard deviation of longitude of 0.035 seconds and a measured value width of 0.246 seconds were obtained.

The distance direction measuring device 3 is a device for irradiating a laser pulse light and measuring the distance from the object from the time until the reflected light returns (recently, as a collision prevention sensor for automobiles). Was also developed and is called a laser radar). Particularly, in this embodiment, in order to enable the outside work vehicle 1 to measure the distance to the object while moving, the device having the following specifications was used. Distance measuring range: 1 to 10 m Distance measuring accuracy: ± 0.3 m Data acquisition interval: 10 ms Distance measuring luminous flux: 1 mrad (horizontal) x 17 mrad (vertical)

FIG. 2 shows an example of distance measurement by the distance direction measuring device 3. Fig. 2 is 5m while moving at a speed of 3km / hour
It shows a spectrum of a reflected wave obtained by measuring the distance to an object having a width of about 20 cm and a distance of 5 cm, and the distance could be measured within an error of 10 cm. This measurement is
The measurement can be performed by moving the measuring device on a rail provided on the roof of the vehicle. Furthermore, the direction in which the distance direction measuring device 3 is facing can be known by the fixing device 4 of the distance direction measuring device 3.

Next, the equipment specifying method of the present invention will be described.
First, the off-site work vehicle 1 is advanced on the road. At this time,
The position data and the traveling direction data of the off-site work vehicle 1 are sent in real time by the device 2 for measuring the position and the traveling direction mounted on the off-site work vehicle 1 to the computer terminal device 5 for processing the measured values. At the same time, the distance and direction measuring device 3 sends information on the distance and direction from the vehicle 1 to the equipment to be measured to the computer terminal 5. Therefore, these data are processed to calculate the position of the equipment under test , and the calculated position is calculated.
The position data (latitude, longitude) is displayed on the display device of the computer terminal device 5.

On the other hand, the computer terminal device 5 is called from the computer terminal device 5 to manage the facility information, and the position data (latitude, longitude, facility name, etc.) of the target facility is read from the database connected to this terminal device 9. Is displayed and displayed on the display device of the computer terminal device 5. When the position data in the equipment information and the position data calculated by the measurement overlap in a rectangular area of ± 0.2 seconds in latitude and ± 0.2 seconds in longitude, that is, the position of the measured equipment. data
However, a certain amount of data centered on the position data of the target equipment
If it exists in the area, it is determined that the measured equipment is the same as the equipment to be searched .

When the utility pole was measured by the method of the present invention, the error from the actual position separately measured was within 3 m. From this result, it is possible to easily make a one-to-one correspondence in the case of the normal equipment density (the distance between the utility poles is about 15 m). It was also found that the time required to identify the equipment can be remarkably shortened even in the case where the target equipment cannot be matched one-to-one in a densely populated area such as an urban area where the equipment density is 3 m or less.

In the above-mentioned embodiment, an example in which the facility management database is installed in the center so that the facility information can be transmitted and received by data transmission has been described. Of course, the facility management database is downsized and installed in the moving vehicle. You can also

[0018]

As described above, by using the method and system for identifying a facility of the present invention, even if the characters written on the number tag cannot be recognized even in an unguided area or at night or in bad weather. The equipment can be specified easily and efficiently, and the working efficiency is greatly improved.
Therefore, according to the present invention, the traveling time in the off-site work can be shortened, and the cost related to the work can be significantly reduced.

[Brief description of drawings]

FIG. 1 is a diagram illustrating an example of a system of the present invention.

FIG. 2 is a diagram showing an example measured by a device 3 that measures a distance from a work vehicle 1 to a target facility.

[Explanation of symbols]

1 Outside work vehicle 2 Device mounted on the outside work vehicle 1 for measuring the position and traveling direction 3 Device for measuring the distance and direction from the outside work vehicle 1 to the work point 4 Fixing device for the distance direction measuring device 3 5 Computer terminal device 6 for processing measured values 6 Communication terminal device installed on the off-site work vehicle 7 Differential GPS correction information receiving terminal device 8 Center station 9 Computer terminal device 10 for managing facility information 10 Center station 8 Communication terminal device 11 installed in the differential GPS position reference station 12 differential GPS correction information transmission terminal device 13 GPS satellite 14 target equipment

─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Atsushi Ide 3-19-2 Nishishinjuku, Shinjuku-ku, Tokyo Inside Nippon Telegraph and Telephone Corporation (72) Inventor Katsumi Hiramatsu 3-19-3 Nishishinjuku, Shinjuku-ku, Tokyo No. 2 Nihon Telegraph and Telephone Corporation (72) Inventor Mitsuhiro Tachida 3-19-2 Nishishinjuku, Shinjuku-ku, Tokyo Nihon Telegraph and Telephone Corporation (56) Reference JP-A-5-159188 (JP, A) ) JP 62-73116 (JP, A) JP 7-104848 (JP, A) JP 7-43109 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04B 17/00 G01C 21/00 G01S 5/16

Claims (2)

(57) [Claims] 1. A facility identification method used when performing a task of searching for a target target facility or extracting information about a target target facility from outside facilities in a communication service, an electric power service, or the like. Then, the position data of the latitude and longitude of the target equipment collected and accumulated in advance is displayed on the display device of the computer terminal device, and then the position of the moving vehicle and the traveling direction are measured using the GPS device, wherein from moving vehicles pulsed laser light is irradiated to the measured equipment, time and direction to the receiving light reflected from 該被measuring equipment is measured, by measuring the relative position of 該被measuring equipment for the mobile vehicle, Is the obtained relative position , the position of the moving vehicle, and the measurement result of the traveling direction?
The latitude and longitude of the measured equipment are calculated from the
The position data of the latitude and longitude of the measured equipment is displayed on the display device of the computer terminal device, and the position data of the measured equipment is the position data of the target equipment.
When it exists in a certain area centered on the
Characterized by determining that the measured equipment is the target equipment
Equipment identification method. 2. Communication services, power services, etc.
Work to search for the target target equipment from outside equipment
Or, work to extract information about the target equipment
When performing, determine that the measured equipment is the target equipment
A facility identification system used to identify the location and facility data such as the facility name and facility number of the facility outside the facility.
Facility management information database storing data and the facility
Management information database and accessible computer terminals
Position, GPS device, and movement equipped with distance direction measuring device
It consists of a vehicle, and the equipment management information data is displayed on the display device of the computer terminal device.
Position data of latitude and longitude of the target equipment from the database
The display means for displaying and the position of the moving vehicle by the GPS device
Laser pulse light is received by the measuring means for measuring the row direction and the distance direction measuring device.
Irradiate the measurement equipment and receive the reflected light from the equipment under measurement.
Measuring the time and direction to that, with respect to the moving vehicle
The measuring means for measuring the relative position of the equipment to be measured and the computer terminal device are used to obtain the measuring means.
The position of the moving vehicle, the traveling direction and the measured equipment
Calculate the latitude and longitude of the measured equipment from the relative position
Calculating means and a display device of the computer terminal device by the calculating means.
The position data of latitude and longitude of the measured equipment obtained by
An equipment identification system characterized by having display means for displaying .