SYSTEM FOR MONITORING POSITIONS OF MOVING OBJECT

• US 20110117923A1
• Filed: 06/01/2007
• Published: 05/19/2011
• Est. Priority Date: 10/02/2006
• Status: Abandoned Application

• Current Assignee: Matsusima Electrical Machinery Company Limited, Mitsui Matsushima Co. Ltd. (Mitsui Matsushima Holdings Co., Ltd.)
• Original Assignee: Matsusima Electrical Machinery Company Limited, Mitsui Matsushima Co. Ltd. (Mitsui Matsushima Holdings Co., Ltd.)
• Inventors: Yonezawa, Junko, Yonezawa, Shoichiro
• Application Number:
  US12/443,759
• Publication Number:
  US 20110117923A1
• Time in Patent Office: Days
• US Class Current: 455/456.1
• CPC Class Codes: G08B 13/196 using television cameras
• CPC Class Codes: G08B 21/02 Alarms for ensuring the safety of persons
• CPC Class Codes: G08B 21/16 Combustible gas alarms
• CPC Class Codes: H04W 64/00 Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Abstract

[PROBLEMS TO BE SOLVED] A problem to be solved is to provide a moving object monitoring system that can confirm a position of a moving object including a person in a complicated pit in order to early discover a trouble or a problem occurring in the pit. [MEANS FOR SOLVING PROBLEMS] In the moving object position monitoring system is comprised of a moving object central monitoring means, mobile stations and pit base means. The moving object central monitoring means is characterized in that the moving object central monitoring means is made to store a set position of each pit base means in advance and to display a position of each mobile station in the pit in accordance with position information transmitted from each pit base means.

Claims

1. A system for monitoring positions of moving objects characterized in that the system comprises:

central moving object monitoring means arranged out of an underground structure;

mobile stations to be borne by respective human beings and/or some other moving objects; and

at least an underground base means arranged within a control region in the underground structure,

that each of the mobile stations is made to store in advance a specific piece of mobile station identification information and transmit the mobile station identification information of itself at regular time intervals as digital signal,

that the or each of the underground base means is made to store in advance a specific piece of base station identification information, receive the specific pieces of mobile station identification information transmitted from the mobile stations and transmit the received pieces of mobile station identification information and the base station identification information of itself to the central moving object monitoring means as positional information, and

that the central moving object monitoring means is made to store in advance the positions of installation of the underground base means and display the position of each of the mobile stations in the underground structure according to the positional information transmitted from the underground base means.

2. The system according to claim 1, characterized in

that each of the mobile stations is equipped with an oscillation sensor and adapted to transmit a detection signal of the oscillation sensor in addition to the mobile station identification information, and

that each of the underground base means is adapted to receive the mobile station identification information and the oscillation sensor detection signal transmitted from the mobile station and transmit the received mobile station identification information and oscillation sensor detection signal and the base station identification information of itself to the central moving object monitoring means.

3. The system according to claim 1, characterized in

that each of the mobile stations is equipped with a tilt sensor and adapted to transmit a detection signal of the tilt sensor in addition to the mobile station identification information, and

that each of the underground base means is adapted to receive the mobile station identification information and the tilt sensor detection signal transmitted from the mobile station and transmit the received mobile station identification information and tilt sensor detection signal and the base station identification information of itself to the central moving object monitoring means.

4. The system according to claim 1, characterized in

that each of the mobile stations is adapted to be able to transmit optional information prepared by combining the mobile station identification number of itself and optional data received by the mobile station, and

that each of the underground base means is adapted to receive the optional information and transmit the received optional information and the base station identification information of itself to the central moving object monitoring means.

5. The system according to claim 1, characterized in

that each of the mobile stations is adapted to receive only information including the mobile station identification number of itself,

that each of the underground base means is adapted to receive only information including the base station identification number of itself, and

that the central moving object monitoring means is adapted to be able to transmit specific transmission information prepared by combining an arbitrarily selected mobile station identification number, the base station identification information of the underground base means whose sensing area covers the mobile station of the mobile station identification number and optional data.

6. The system according to claim 1, characterized in that,

when the central moving object monitoring means receives successively for a plurality of times positional information containing same base station identification information and same mobile station identification information, the central moving object monitoring means finishes reading the positional information and finalizes the position of the corresponding mobile station according to the positional information.

7. The system according to claim 1, characterized in that

a management area for controlling with priority the persons or some other moving objects carrying respective mobile stations in the underground structure is determined in advance, and

that the underground base means includes:

underground base means for a passing point adapted to detect each mobile station passing a predetermined point in the underground structure;

underground base means for management areas adapted to detect the behavior of each mobile station in the management areas in the underground structure; and

underground base means for entrance/exit of management areas adapted to detect the entrance and exit of each mobile station in the management areas.

8. The system according to claim 7, characterized in that,

when the central moving object monitoring means does not receive positional information from a mobile station supposed to be in one of the management areas for more than a predetermined time, the central moving object monitoring means makes each of the underground base stations and the mobile station raise the transmission output power thereof and tries to detect the mobile station supposed to be in the management area.

9. The system according to claim 1, characterized in that,

when there is a mobile station whose positional information does not change for a predetermined period of time, the central moving object monitoring means determines that the mobile station is in a status of no motion/abnormal.