JPH0580141A - Moving body monitoring method conducted with transmission and reception of electromagnetic wave signal - Google Patents

Abstract

PURPOSE:To provide a monitoring method for a moving body to be performed through transmission and reception of electromagnetic wave signals, with which no cross-talk is generated even though many people use it, which can sense the position of a person, car, etc., possessing a mobile radio apparatus from a base station, and which enables the person possessing the apparatus to issue an emergency signal. CONSTITUTION:A mobile radio apparatus 10 receives signals due to electromagnetic waves of a specific frequency including ID symbols transmitted at certain intervals from a base station 14a, and a position signal sensed by a built-in GPS receiver 11 is transmitted to the base station 14a upon making sure that the ID symbol is in correspondence. The position signal received by the base station 14a is synthesized with the map information, and the on-map position of the radio apparatus 10, motion locus, and the time are displayed on a display 22 and/or in writing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of monitoring a mobile body by transmitting and receiving a radio signal for monitoring the position of a mobile radio at a base station.

[0002]

2. Description of the Related Art In the financial insurance industry and sales of automobiles, etc., there are a large number of salespeople in order to acquire customers or provide customer services. Since it operates outside the company, it is essential for the business entity to manage the labor of each salesperson. Let a salesperson carry a small wireless receiver, and if there is a requirement, set it up in the company or send a wireless signal from the transmitter of a specific station to make a buzzer sound, and let the salesperson enter the office from a nearby public telephone. Contact is widely made. On the other hand, with the development of information and communication technology, a navigation system is widely known in which a receiving system from a satellite is mounted on a ship or an aircraft and the location thereof can be accurately identified. GPS (Glo
bal Positioning System). This GPS is arranged such that four or more satellites are always visible from the ground, and the ship or aircraft is equipped with a GPS receiver for receiving the radio waves from the satellites, and the orbit data of the satellites included in the received signal is used for calculation. The reception position is displayed by performing processing.

[0003]

However, it is difficult to confirm the position of a sales person in a system which carries the small radio receiver and calls a sales person or the like. On the other hand, since the position of a ship or an aircraft can be detected using GPS, if a salesperson carries the GPS receiver and transmits the position received by the GPS to a base station if necessary, Although it is possible for a station to combine it with map information and display its position on the map, the problem is that when many salespeople use these systems, they need to use many types of frequencies. There is. In addition, each salesman, the elderly, or security guards can use GPS
Carry a mobile radio equipped with a receiver and a transmitter that transmits the position signal received and calculated by the receiver, and if an emergency signal is issued by the transmitter in an emergency, the position of the mobile device is transmitted to the base station. It is possible, but interference can occur when used by many people at the same time. The present invention has been made in view of such circumstances, and even when used by a large number of people, interference can occur, and the position of a person carrying a mobile wireless device, a vehicle, or the like can be detected from a base station. An object of the present invention is to provide a method of monitoring a moving body through transmission and reception of a radio wave signal that allows a person who carries the mobile phone to emit an emergency signal in some cases.

[0004]

A method according to the above-mentioned object.
A method of monitoring a mobile body through transmission and reception of a radio signal described above is a method of monitoring a mobile body through transmission and reception of a radio signal for monitoring the position of a mobile radio at a base station, wherein the base The position detected by the built-in GPS receiver after the mobile radio receives a signal by a radio wave of a specific frequency including the identification code transmitted from the station at every predetermined time, confirms that the identification codes match. A signal is transmitted to the base station, the position signal received by the base station and map information are combined, and the position on the map of the mobile wireless device, the movement track, and the time thereof are displayed and / or written. It is configured so as to be performed through transmission and reception of a radio signal to be displayed.

Further, a method of monitoring a moving body according to claim 2 which transmits and receives a radio signal according to the above object,
A method of monitoring a mobile body through transmitting and receiving a radio signal for monitoring the position of a mobile wireless device at a base station,
The mobile radio includes a GPS receiver, a transmitter that transmits a position signal detected by the GPS receiver, a receiver that receives a signal from a base station, and an emergency signal transmission switch, and the emergency signal transmission switch The position signal detected by the GPS receiver at a specific time is transmitted as a radio wave signal from the transmitter by the operation of, and the position signal and the map information received by the base station are combined. Then, the position of the mobile radio is displayed on a display and / or a document.

[0006]

According to the method for monitoring a mobile body which is carried out by transmitting and receiving a radio wave signal according to claim 1, a radio wave of a specific frequency including an identification signal is emitted from the base station at predetermined time intervals, which causes a large number of movements. When detecting a mobile wireless device, a large number of mobile wireless devices can be individually detected by transmitting radio waves at the same frequency for a predetermined short time. After receiving the radio wave of this specific frequency, first check whether the identification code of the received radio wave and the identification code of the mobile wireless device match, and if they do not match, ignore them.
If they match, the transmitter is operated to transmit the position signal detected by the GPS receiver after a fixed time has elapsed from the reception. As a result, it is possible to transmit the position signals from a large number of mobile radio devices to the base station without causing interference. After that, the base station receiving the position signal from the transmitter synthesizes the position signal and the map information, and displays the position, movement locus and detection time of the mobile radio device on the display and / or the document. ..

According to a second aspect of the present invention, there is provided a method for monitoring a mobile body through transmission and reception of a radio wave signal, wherein the mobile radio device is provided with a receiver for receiving a signal from a base station. The time of the machine is controlled to a fixed time, and when the emergency signal transmission switch is activated, the position signal of the GPS receiver is transmitted to the base station at a specific time. Therefore,
Even when there are other numbers of mobile radios, it is possible to distribute the time at which the emergency signal is emitted, and thus a large number of mobile radios can be mixed. After this, at the base station,
The position of the mobile wireless device is specified from the emergency signal, combined with map information, and the position, the movement track, and the detection time of the mobile wireless device are displayed on a display and / or a document.

[0008]

Embodiments of the present invention will now be described with reference to the accompanying drawings to provide an understanding of the present invention. Here, FIG. 1 is a schematic block diagram of an apparatus to which a method of monitoring a mobile object is performed by transmitting and receiving a radio signal according to an embodiment of the present invention, and FIG. 2 is a graph showing reception and transmission states of the signal. 3 and 4 are flow charts showing the operating conditions of the device.

As shown in FIG. 1, a GPS receiver 11 is provided in a mobile radio 10 carried by a salesperson or a security guard.
, A signal receiver 12 for receiving a signal from a base station, and a transmitter 13 operated by a specific signal of the signal receiver 12.
And an emergency signal transmission button 14, which is an example of an emergency signal transmission switch. On the other hand, the base station 14a has a transmitter 15 for transmitting radio waves of a specific frequency to the mobile wireless device 10.
A receiver 16 for receiving signals from the mobile radio 15, a computer 17 connected to these, a keyboard 18 connected to the computer 17, a memory 19, a ROM 20 equipped with map information, and a printer 21. Display 22 and alarm 2 such as CRT
3 and 3. These will be described in detail below.

The GPS receiver 11 is composed of a normal GPS receiver, receives radio waves from at least four satellites, has an arithmetic circuit inside, and outputs its own position as a digital signal. It has become. It should be noted that it is free to provide a liquid crystal display or the like to display the position. The signal receiver 12 receives the radio wave including the identification code (code signal) transmitted from the base station 14a, and when the radio wave includes the identification code (code) installed inside, the base station 14a
It accepts signals from. The transmitter 13 is turned on based on a command from the signal receiver 12, and transmits the position signal detected by the GPS receiver 11. In addition, this GPS
The switch of the receiver 11 can also be turned on by the signal of the signal receiver 12, whereby power saving can be achieved. Incidentally, 24 is an antenna, which is a receiving antenna of the GPS receiver, a transmitter 13
And the receiving antenna of the signal receiver 12 are also used.

The transmitter 15 of the base station 14a receives a signal from the computer 17, sequentially modulates a signal including a predetermined identification code, and transmits the signal from the antenna 25 in a pulsed manner. In addition, the receiver 16 is the antenna 2
The radio wave emitted from 5 is received via the antenna 26,
The position signal is modulated and sent to the computer 17. A ROM 20 in which map information is written is connected to the computer 17, and the receiver 1 is internally provided therein.
The position information received individually by 6 is combined, and the position of the mobile wireless device 10 is displayed on the map. Then, the position information is stored and held in the memory 19, and the locus of action and the time when a signal is sent from the transmitter 15 to the mobile wireless device 10 are stored. These pieces of information can be displayed on the display 22 and, if necessary, the printer 21.
It is also possible to print by. When the emergency signal transmission button 14 of the mobile wireless device 10 is pressed to issue an emergency signal, the receiver 16 receives the emergency signal and detects the identification code and position of the emergency signal. The alarm 23 is activated.

Next, the operation of the apparatus will be described in more detail with reference to FIGS. 2 and 3, and the method of monitoring a moving body by transmitting and receiving radio signals according to an embodiment of the present invention will be described in more detail. .. First, the transmitter 15 of the base station 14a sequentially pulses a radio wave including a code signal matching the identification code set in each mobile radio 10 at intervals of t ₁ seconds (for example, 0.01 to 2 seconds). Transmitted (step a). As a result, all of the corresponding mobile wireless devices 10 will receive as shown in FIG. 2B (step b), but if they match with the identification signal set inside (step c). ) First, the internal timer is reset (step d), the GPS receiver is operated to detect the self-position, the digital signal is converted into a digital signal and transmitted from the transmitter 13 (step f). In this case, transmitter 1
3 transmits a signal after a certain period of time from the reset of the timer, and before transmitting a signal from the transmitter 15 of the next base station 14a. As a result, signals can be transmitted and received at one frequency. Next, when the receiver 16 of the base station 14a receives this position signal, it demodulates this and inputs the position signal into the computer 17 as a digital signal.

The computer 17 itself is the transmitter 15
The time and the identification code transmitted from the device are analyzed, and the received position signal detects which person or object the mobile wireless device 10 is carrying (step h) and synthesizes this with the map information. It is displayed on the screen (step i) and its position is stored in the memory 19 (step j). Note that, here, if a large amount of memory is required when the map information is stored in the memory 19 for each received position information, the map information is not stored in the memory 19, but only the position information is stored in the memory 19, and the printer 21 Alternatively, when it is displayed on the display 22, it may be combined with the map information and displayed.

After the position of the predetermined mobile radio 10 is sequentially searched, and t ₂ seconds (for example, 10 to 600 seconds) elapse, a specific identification code is again sent from the transmitter 15 of the base station 14a. If the signals including the signals are sequentially transmitted, the moved position of the mobile wireless device 10 can be detected. Therefore, by repeating these processing steps, it is possible to display the locus and time of movement of each mobile wireless device 10. Can
As a result, a sales person carrying the mobile wireless device 10,
You can check the movement of guards or objects. The position signal of the person or object carrying the mobile wireless device 10 is stored for each identification code so that the position of the mobile wireless device 10 can be output by designating a specific identification code. It is preferable to set. Here, if the mobile wireless device 10 enters a building, the GPS receiver 11 may not receive the radio wave from the satellite.
In this case, the position signal will not be input to the computer 17, so that part should not be displayed on the map, and the GPS receiver 11 will be again in a position where the signal from the satellite can be received. Data may be created from the case where it is present, and from the last time and place where the GPS receiver 11 was able to receive, and then the first time and place when the GPS receiver 11 was able to receive, the mobile radio Machine 1
The position of 1 can be estimated.

Next, the procedure for issuing an emergency signal using the mobile radio 10 will be described with reference to FIG. 4. When the emergency signal transmission button 14 is pressed (step k), the signal is held by itself ( Step l), GPS receiver 11
Is operated to detect the self-position (step m). After a certain time has passed since the timer was reset,
At the time point when the signals sequentially sent from the base station 14a have completed one round, the transmitter 13 is operated to send the signal transmitted from the GPS receiver 11 (step n). In this case as well, since there are many mobile wireless devices and the emergency signal transmission button 14 may be pressed at the same time, when one mobile wireless device 10 is transmitting the emergency signal, another mobile wireless device 10 moves. The type radio device 10 receives this signal and either does not emit radio waves or takes a long time to issue an emergency signal, and the time from when the timer is reset to when the emergency signal is issued. Is set to be constant for each transmitter 13 to prevent interference.

The base station 14a receives from the mobile radio 10
A radio wave including an identification code and a position signal is received (step o) and position information is detected (step p). The position information is combined with the map information (step q), an alarm such as a lamp or a bell is generated (step r), and stored in the memory (step s). As a result, the base station 14a
Can recognize the location of the emergency signal, the time, and its identification code. In the above embodiments, when a computer with a slow arithmetic function is used in the computer, it is natural to provide a buffer memory for temporarily storing information. Furthermore, in order to shorten the processing time, a plurality of units can be used. It can also be processed using a computer.

[0017]

As is apparent from the above description, the method of monitoring a moving body by transmitting and receiving a radio wave signal according to the first aspect of the present invention is based on the position of a person carrying a mobile radio device, a vehicle, or the like. It can be immediately detected from the station, and a large number of mobile radios can be operated at the same frequency. In addition, the method of monitoring a moving body through transmitting and receiving a radio signal according to claim 2 further enables a person carrying a mobile wireless device to emit an emergency signal. I can inform you.

[Brief description of drawings]

FIG. 1 is a schematic block diagram of an apparatus to which a method of monitoring a moving object performed by transmitting and receiving a radio signal according to an embodiment of the present invention is applied.

FIG. 2 is a graph showing reception and transmission conditions of the same signal.

FIG. 3 is a flow chart showing an operation status of the apparatus.

FIG. 4 is a flow chart showing an operation status of the apparatus.

[Explanation of symbols]

 10 Mobile Radio 11 GPS Receiver 12 Signal Receiver 13 Transmitter 14 Emergency Signal Transmission Switch 14a Base Station 15 Transmitter 16 Receiver 17 Computer 18 Keyboard 19 Memory 20 ROM 21 Printer 22 Display 23 Alarm 24 Antenna 25 Antenna 26 Antenna

Claims (2)

[Claims] 1. A method for monitoring a mobile body, which comprises monitoring the position of a mobile radio device by transmitting and receiving a radio signal for monitoring at a base station, the identification code being transmitted from the base station at predetermined time intervals. The built-in GP after confirming that the mobile radio receives a signal by a radio wave of a specific frequency including
S The position signal detected by the receiver is transmitted to the base station, the position signal received by the base station and the map information are combined, and the position on the map of the mobile wireless device, the movement locus and the time thereof are combined. A method of monitoring a mobile object by transmitting and receiving a radio signal that displays on a display and / or a document. 2. A method of monitoring a mobile body by transmitting and receiving a radio signal for monitoring the position of a mobile radio at a base station, wherein the mobile radio has a GPS receiver and the GPS reception. Equipped with a transmitter for transmitting a position signal detected by the machine, a receiver for receiving a signal from the base station, and an emergency signal transmission switch, which is instructed by the base station by the operation of the emergency signal transmission switch, and at a specific time. The position signal detected by the GPS receiver is transmitted as a radio signal from the transmitter, and the position signal received by the base station and map information are combined to display the position of the mobile wireless device and / or Alternatively, a monitoring method performed by transmitting and receiving a radio signal, which is characterized by being displayed on a document.