JPH10221427A - Mobile body information system and mobile body exploring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile body information system and a mobile body exploring system wherein, with reduced power consumption, battery wear is less. SOLUTION: With judgement that position of an aged person cannot be measured, a position-measurement-impossible signal is outputted from a transmitter to, for example, an explorer device (step S14), to cut off power supply to a transmission circuit (step S28). Thereby, the transmission circuit becomes inactive, power consumption being reduced by that amount. In short, under the condition where position detection using GPS satellite is impossible, power consumption of a transmitter 11 is reduced, to reduce battery wear. When measurement becomes possible, after a transmission start signal is outputted (step S18), power supply to the transmission circuit is resumed, to resume transmission of position information (step S20).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile object information device and a mobile object search system, and more particularly, to a mobile object (for example, a wandering old man) obtained by receiving positioning radio waves from GPS satellites. A mobile information device that detects and outputs the detected current position to the outside by radio waves (for example, a mobile phone), and the position of a mobile object by receiving such a mobile information device and a radio wave from the mobile information device. And a search device for searching for a mobile object.

[0002]

2. Description of the Related Art Hitherto, a system for searching for a lost child or an elderly person (for example, a wandering elderly person) has been developed (for example, an elderly person searching system).
In this system, for example, a small transmitter that transmits GPS position information (longitude and latitude) is carried by an elderly person who may be a lost person, and a search device (for example, a search center) transmits radio waves transmitted from the small transmitter. Upon reception, the position of the old man is displayed on a map on the screen of the display device so as to search for the old man. Here, GPS (global potio)
The ning System is a system for receiving a signal (positioning radio wave) transmitted from a GPS satellite and measuring its own position (longitude, latitude, altitude) on land, at sea, and in the air. There are many conventional devices such as a car navigation device for supporting traveling by receiving a positioning radio wave from a GPS satellite.

[0003]

By the way, the conventional aged person search system has the following problems. (1) The above small transmitter is carried by an elderly person who may be a lost person, and the small transmitter is at least G
PS receiver and GP received by GPS receiver
A communication control device (for example, a device including a mobile phone) for transmitting the S position information to the outside, and the communication control device is a satellite capable of performing position calculation by temporarily reducing the number of positioning radio waves received from GPS satellites Even when the number is less than the number, since the GPS position information is constantly transmitted to the outside, there is a problem that power consumption is large. Generally, the received power is small and the transmitted power is larger, so if the power consumption is large,
Battery consumption becomes severe.

(2) It is desirable that the battery mounted on a small portable transmitter is as small and lightweight as possible. However, if the size and weight are reduced, the capacity of the battery is reduced. Therefore, it is desirable to reduce battery consumption. Conventionally, there is room for improvement in this respect.

Accordingly, an object of the present invention is to provide a mobile object information apparatus and a mobile object search system capable of reducing power consumption and battery consumption.

[0006]

According to a first aspect of the present invention, there is provided a moving object information apparatus comprising: a position detecting means for detecting a self-position of the moving object; A transmitting unit for transmitting the position information to the outside, a power supply unit for supplying power to the position detecting unit and the transmitting unit, and, when the position detecting process by the position detecting unit becomes impossible, the position detecting process is notified. After transmitting the signal, stop transmitting the position information by the transmitting means,
A transmission restricting unit that controls transmission of the position information by the transmission unit to be resumed when the position detection process becomes possible;
It is characterized by having.

In a preferred embodiment, the position detecting means receives a positioning radio wave from a GPS satellite and measures the current position of the mobile unit.
The transmission unit may include a PS device, and the transmission unit may wirelessly transmit the current position of the moving object to the outside.

For example, when the number of positioning radio waves received from the GPS satellites decreases and falls below at least the number of satellites for which position calculation is possible, the transmission restricting means determines the position by the transmitting means. Control for stopping transmission of information may be performed.

For example, as set forth in claim 4, the transmission restricting means provides an area for transmitting reception-related information even when the number of receivable GPS satellites is less than four, and in this area, the number of receivable GPS satellites is set. At least one of the position information and the number of receivable satellites may be transmitted.

For example, when the remaining amount of the power supply is equal to or more than a predetermined value, the transmission restricting unit stops transmitting the reception-related information when the number of receivable GPS satellites is 0, If the remaining amount of the power supply means becomes smaller than a predetermined value, the number of receivable GPS satellites may be switched to two so that transmission of reception-related information is stopped.

[0011] For example, as described in claim 6, the transmission restricting means notifies the start of transmission when the position detecting means is ready to perform position detection processing after the transmitting means stops transmitting position information. Control may be performed so that transmission of the position information by the transmitting unit is restarted after transmitting the signal.

According to a seventh aspect of the present invention, there is provided a mobile object search system, wherein each of the plurality of movable mobile objects has a mobile information device, and a signal from each mobile information device is received by the search device, and each mobile object is received. A mobile object search system for searching for a position of a mobile object, wherein the mobile object information device transmits position information of the mobile object detected by the position detection means to the outside, and the position information of the mobile object detected by the position detection means. A transmitting unit, a power supply unit for supplying power to the position detecting unit and the transmitting unit, and a signal notifying that the position detecting process cannot be performed when the position detecting unit cannot perform the position detecting process, and then transmitting the signal. Transmission control means for stopping transmission of position information by the means, and controlling transmission of position information by the transmission means to be resumed when the position detection processing becomes possible, and the search device comprises: A receiving unit that receives the position information of the moving object transmitted from the moving object information device; and a searching unit that searches for the position of the moving object based on the position information of the moving object received by the receiving unit. It is characterized by.

In a preferred aspect, the search device in the mobile object search system according to claim 7 is a display means for displaying search position information of the mobile object, and the mobile object information. When receiving a signal indicating that the position detection processing is impossible from the transmitting means in the device,
The position information immediately before that is stored together with the time information, and the display of the position information is displayed on the display means in a manner different from the display at the time of normality. When the transmission of the position information is restarted, the position information received after the restart is displayed. A display mode changing unit that controls display on the display unit in a display mode that calls attention;
May be provided.

For example, as set forth in claim 9, the transmission restricting means of the mobile information device in the mobile object search system according to claim 7 transmits reception-related information even when the number of receivable GPS satellites is less than four. A transmitting unit for transmitting information on a position of a receivable GPS satellite and transmitting at least one of the number of receivable satellites in the region, and the search device displays search position information of a mobile object;
At least receiving satellite position information from the transmitting means in the mobile information device, receiving information on the number of receiving satellites,
Auxiliary information display control means for controlling the display auxiliary information based on this information to be displayed on the display means.

For example, as in claim 10, claim 7
The auxiliary information display control means of the search device in the moving object search system described above, when receiving a signal indicating that the position detection processing is impossible from the transmitting means in the mobile object information device, stores the position information immediately before that together with time information. At the same time, control may be performed so as to receive at least information on the received satellite position information and the number of received satellites from the transmitting means in the mobile information apparatus, and display the search auxiliary information based on this information on the display means. .

For example, as in claim 11, claim 7
The auxiliary information display control means of the search device in the mobile object search system according to the above, when receiving a signal notifying that the position detection processing is impossible from the transmission means in the mobile object information device, normally displays the position information immediately before that. In addition to displaying on the display means in a mode different from the display of the above, receiving at least information on the received satellite position information and the number of received satellites from the transmitting means in the mobile information device, and displaying the search auxiliary information based on this information on the display means May be controlled so that

For example, as in claim 12, claim 7
The auxiliary information display control means of the search device in the mobile object search system described above receives at least received satellite position information and information on the number of received satellites from a transmission unit in the mobile object information device, and performs search auxiliary information based on this information. Is displayed on the display means, and when the transmission of the position information is restarted from the transmission means in the mobile information device, the position information received after the restart is displayed on the display means in a display manner to call attention. Is also good.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to an aged search system will be described below with reference to the drawings. A. Overall Configuration of System FIG. 1 is a block diagram of an embodiment of an elderly person search system to which a mobile object search system according to the present invention is applied, in which the mobile object is an elderly person. In FIG. 1, 1 is a search management center, and 2 is an elderly person (eg, a wandering elderly person) as a person to be searched. Although the elderly 2 can search not only one, but a plurality of them, the present embodiment exemplifies the case of one elderly person. The old man 2 carries a transmitter 11 (mobile information device),
The transmitter 11 is manufactured to be small and lightweight, and is detachably fixed to the body of the elderly 2 with a rubber band or the like. The transmitter 11 is G
Receiving the positioning radio wave from the PS satellite, detects its own position (ie, the current position of the elderly), and searches for the detected position by wireless telephone via the public telephone line 12 through the search management center 1.
(The transmission restriction state will be described later).

The search management center 1 receives a telephone signal including position information from a transmitter 11 via a public telephone line 12 and displays a current position of the old man 2 on a screen.
It has. The search device 13 is operated by, for example, a management operator. When the management operator checks the current position of the elderly person 2 on a map, the search information is sent to a searcher's house 15 (for example, Contact the family of Elderly 2).

B. Next, the configuration of the transmitter 11 will be described with reference to FIG. In FIG. 2, a transmitter 11 is a GPS antenna 21,
GPS receiver 22, communication antenna 23, transmission circuit 2
4, a control circuit 25, an adjustment switch 26, a power supply circuit 27, and a housing 28. GPS antenna 11
In order to receive a right-handed circularly polarized signal of about 1.5 MHz transmitted from a GPS satellite, a microstrip patch antenna having a substantially hemispherical directivity using, for example, a Teflon substrate is used. It is attached to the side. The GPS receiver 22 receives and demodulates positioning radio waves from a plurality of GPS satellites via the GPS antenna 21, and based on the demodulated signal, present position information of the transmitter 11 (for example, tertiary information including latitude, longitude, and altitude). (Original positioning information), and outputs the calculated current position information to the transmission circuit 24.

GPS (global positioning system)
Is a worldwide radio positioning system that uses artificial satellites. In principle, 24 satellites are arranged in 4 orbit planes, each of which receives radio waves from each satellite in principle. The distance between the satellite and the receiving point is calculated from the arrival time, and finally the three-dimensional positioning of the receiving point (latitude, longitude, altitude)
Can be requested. In this case, the old man 2 provided with the transmitter 11 whose current position is detected by the GPS receiver 22 corresponds to a moving object. GPS antenna 21
The GPS receiver 22 constitutes a position detecting means.

Here, when the GPS receiver 22 performs positioning, it is necessary to catch a GPS satellite, and this is called acquisition. If three or more satellites can be acquired, at least two-dimensional positioning calculation can be sufficiently performed by signals from those satellites. In the positioning calculation, a pseudo distance (pseudo range) between the satellite and the position of the GPS receiver 22 is obtained, and various correction information is added to the pseudo distance to measure a true distance. Generally, 3
In order to perform the dimensional positioning calculation sufficiently, it is necessary to capture four satellites (note that the signal strength from the satellites and other conditions are satisfied). This is because if the pseudoranges from four satellites are obtained, three-dimensional positioning, longitude, latitude, altitude, and time can be accurately obtained.

In order to perform positioning calculation in real time, it is necessary to keep track of a satellite once captured, which is called tracking. However, if one of the three satellites used for positioning is located at a low elevation angle affected by the atmosphere or the like, the accuracy of the positioning calculation is reduced. Also, when the number of satellites used for positioning becomes two or one due to the effect of a building, or when a moving object enters the interior of a building, the accuracy of positioning calculation is reduced or positioning calculation is impossible. It becomes. This is because GPS satellite signals are extremely weak in nature and are badly affected if they are shadowed by an obstruction, and satellites with low elevation angles have relatively large signals passing through the Earth's atmosphere. Weak signal. Furthermore, multipath noise (GPS receiver 22
That are affected by reflections from buildings near the building) also have an adverse effect. Therefore, in the present embodiment, when the GPS receiver 22 cannot perform the positioning calculation (for example, when it is determined that the positioning accuracy has decreased to a predetermined value or less), the control circuit 25 described later transmits the transmission circuit 24. The power supply operation to the battery is stopped, so that the consumption of the battery 29 is reduced.

The transmitting circuit 24 (transmitting means) transmits the current position information of the old man 2 detected by the GPS receiver 22 (the position information is transmitted by adding an ID number for identifying the searched old man 2) to the radio telephone. To a telephone signal that can be transmitted to the public telephone line 12 and transmitted via the communication antenna 23. The transmission circuit 24 is configured by, for example, a device incorporating a wireless mobile phone.

The control circuit 25 regulates the transmission of the current position information by the transmission circuit 24 and controls the operation of the entire transmitter 11. In particular, the control circuit 25 makes it impossible for the GPS receiver 22 to perform the positioning calculation. Then, after transmitting a signal indicating that the position detection processing is impossible, the power supply to the transmission circuit 24 is cut off to stop transmitting the position information, and when the position detection processing becomes possible, the power supply to the transmission circuit 24 is performed. Is started and the transmission of the position information is restarted. Control circuit 25
Is configured by a microcomputer including a CPU, a ROM, and a RAM, for example. The adjustment switch 26 is used for setting when the control circuit 25 controls transmission of the transmission circuit 24 (for example, setting how much a positioning accuracy standard that makes position detection processing impossible). It is provided on the outer surface and includes a setting button and the like. The control circuit 25 and the adjustment switch 26 constitute transmission restricting means. The power supply circuit 27 (power supply means) supplies power to each circuit of the transmitter 11 and includes a battery 29. The battery 29 is detachable and has a predetermined capacity. The power supply circuit 27 performs a process of stabilizing power supply to the battery 29, a voltage conversion process, and the like, and supplies the power to each circuit.

C. Next, the configuration of the search device 13 will be described with reference to FIG. In FIG. 3, the search device 13 is a GPS antenna 3
1, a GPS receiving device 32, a telephone device 33, a switch input unit 34, a control unit 35, a ROM 36, a RAM 37, a display device 38, an audio output device 39, a telephone device 40, and a CD-ROM driver 41. G
PS antenna 31 is approximately 1.5
In order to receive a right-handed circularly polarized signal of MHz, for example, a microstrip patch antenna having a substantially hemispherical directivity using a Teflon substrate is used, and is mounted outside the search management center 1. GPS receiver 32
Receives and demodulates positioning radio waves from a plurality of GPS satellites via a GPS antenna 31, and based on the demodulated signal, present position information (for example, latitude, longitude,
It calculates three-dimensional positioning information including altitude) and outputs the calculated current position information to the control unit 35.

The telephone device 33 receives a telephone signal including the current position information of the old man 2 transmitted from the transmitter 11 via the public telephone line 12 and outputs the received current position information of the old man 2 to the control unit 35. I do. The telephone device 33 constitutes a receiving means for receiving the position information of the old man 2 (moving body). The control unit 35 reads the current position of the search management center 1 output from the GPS receiver 32 and the current position of the elderly person 2 received via the telephone device 33 from the CD-ROM 42 via the CD-ROM driver 41. In addition to performing control to display data on the screen of the display device 38 in accordance with the data, necessary processing (for example, setting of a search range,
In addition to performing settings related to the ID number of the searching elderly 2 and the position information, changing the screen information of the display device 38 (eg, enlarging the screen, changing the display area, and the like), necessary voice synthesis is performed. The processing (for example, when the elderly person 2 starts moving, generates a speech synthesis sound of “movement started”, etc.) and outputs it to the sound output device 40.

In the present embodiment, the control unit 35 includes the transmitter 1
When a signal indicating that the position detection processing is impossible is received from No. 1, the position information immediately before the signal is stored together with the time information, and the display of the position information is displayed on the display device 38 in a mode different from the display at the time of normality, and transmitted. When the transmission of the position information from the device 11 is restarted, control is performed so that the position information received after the restart is displayed on the display device 38 in a display mode that calls attention. The control unit 35 is configured by a microcomputer including a CPU, and performs the above-described control according to a control program (see a flowchart described later) stored in a ROM 36.

The switch input unit 34 performs a setting operation (for example,
An operation key for setting a search range, setting related to the ID number of the search elderly 2 and the position information, and the like, changing search map information displayed on the screen of the display device 38, and changing the number of search targets ( For example, it is configured to include a change key for changing the number of searched elderly people) and other power keys. A movable area where the wandering old man will move (for example, a considerably large area since the person may move on a train) is stored in advance in the CD-ROM 42 driven by the CD-ROM driver 41. The stored point on the movable area can be designated by, for example, coordinates.

The ROM 36 stores in advance a program for search control performed by the control unit 35 and necessary data. The RAM 37 temporarily stores a work area, a memory area for storing information which is input from the switch input unit 34 and must be temporarily stored, and setting information of a search range designated by operating the switch input unit 34. It has a memory area. The display device 38 (display means) is a liquid crystal display device (for example, a color L
The search position information calculated by the control unit 35 and the search map information read from the CD-ROM 42 via the CD-ROM driver 41 are superimposed and displayed on the screen. The audio output device 39 is the control unit 3
5, which outputs a sound based on a signal or sound effect synthesized by the voice, for example, a speaker.

The control unit 35, the ROM 36, the RAM 37, the display device 38, the CD-ROM driver 41 and the CD-ROM 42 constitute search means and display mode changing means. The telephone device 40 is operated by operating a predetermined switch of the switch input unit 34 by the management operator.
The location information of the old man 2 searched by the control unit 35 is automatically communicated to a searcher's house 15 (the searcher is, for example, the family of the old man 2) through a telephone line (or may be a facsimile) 14. The search device 13 is constantly supplied with power through an indoor power source, and the search device 13 operates in principle for 24 hours.

D. Next, the operation will be described. D-1. FIG. 4 is a flowchart showing a control program of the transmitter 11. This program is executed when the power of the transmitter 11 is turned on. When the power is turned on, first, in step S1
Initial setting is performed with 0. In the initial setting, predetermined initialization processing such as initial reset, initial setting of the control circuit 25, and clearing of a flag used internally are performed. At this time, a transmission flag, whose details will be described later, is initialized to [0]. At this stage, power is not supplied from the power supply circuit 27 to the transmission circuit 24.

That is, until transmission by the transmission circuit 24 is started, power is not supplied from the power supply circuit 27 to the transmission circuit 24, and the transmission circuit 24 does not operate. Instead of supplying no power to the transmission circuit 24, for example, the transmission circuit 24 may be set to low power consumption in the sleep mode, and the transmission mode may be set to the transmission mode to enable information transmission.
In the sleep mode, the operation at the start of transmission becomes smooth while reducing power consumption. The transmitter 11 is attached to the elderly 2 at least at the stage when the initial setting is completed. Preferably, the transmitter 11 receives the GPS position information normally and displays the transmitter 11 on the screen of the search device 13 of the search management center 1. It is preferable to attach the transmitter 11 to the elderly 2 after confirming that the position information from the terminal 11 is operating normally.

Next, at step S12, a plurality of GPS
A GPS signal (GPS) including position information transmitted from a satellite
Radio wave), and based on the received GPS signal, the elderly 2
Position calculation processing for finding the position of. Next, in step S16, it is determined from the position calculation result whether or not the positioning of the elderly person 2 is possible. Positioning is possible means that the positioning accuracy is sufficiently maintained. For example, the signal strength from three satellites used for positioning is sufficient and three satellites can be acquired. According to this, at least two-dimensional positioning data (latitude, longitude) can be obtained. On the other hand, when at least one of the three satellites used for positioning is located at a low elevation angle affected by the atmosphere, etc., or when two or one satellite is used for positioning due to the influence of a building, If the old man 2 enters a building (for example, a department store), three satellites cannot be acquired. This state corresponds to a state where positioning is impossible.

(A) When Positioning is Possible When it is determined in step S14 that positioning of the elderly person 2 is possible, the process proceeds to step S16 to determine whether or not the transmission flag = 1. The transmission flag is set to [0] when the power supply to the power supply circuit 24 is stopped, and is set to [1] when the power supply to the power supply circuit 24 is performed. However, in the first routine, the transmission flag is in the state of 0 due to initialization. Now, in the first routine, since the transmission flag is in the state of "0" due to the initialization, the determination result in the step S16 is NO, and then the process proceeds to the step S18. Step S
At 18, a transmission start signal is output in advance to transmit position information based on the positioning result of the old man 2. As a result, power is supplied from the power supply circuit 27 to the transmission circuit 24, and the transmission circuit 24 operates to transmit a transmission start signal (this includes the I
D is added) to the search management center 1 via the public telephone line 12.

Next, in step S20, the position information of the old man 2 (ie, the current position information based on the positioning result, the same applies hereinafter) is transmitted. At this time, power is supplied from the power supply circuit 27 to the transmission circuit 24, and the transmission circuit 24 continues to operate, and the current position of the old man 2 (ie, the current position of the transmitter 11) information (the information includes ID Is transmitted to the search management center 1 via the public telephone line 12. As a result, the search device 13 of the search management center 1 displays the current position of the old man 2 on the map of the display device 38.

Next, at step S22, the transmission flag = 1
And returns to step S12 to repeat the processing loop. In the state where the positioning of the old man 2 is possible, in the second routine, the determination result in the step S16 becomes YES (since the transmission flag = 1), and in this case, the step S18
Jump to step S20. Thereafter, when positioning of the old man 2 is possible, step S12, step S1
4, Step S16, Step S20, Step S22
Is repeated, and the location information of the old man 2 is transmitted to the search management center 1 via the public telephone line 12.

(B) When positioning is impossible When it is determined in step S14 that positioning of the elderly person 2 is impossible, the process branches to step S24 to determine whether or not the transmission flag = 0. Since the transmission flag is 1 in the routine immediately after the positioning of the old man 2 is possible (when the transmission flag is 1) and the positioning is impossible, the determination result in step S24 is NO, and Step S
26, the positioning impossible signal (including the I
Is transmitted to the search management center 1 via the public telephone line 12. As a result, the search management center 1 is in a state where positioning of the elderly 2 is impossible (for example,
It is determined that the old man 2 has entered the building. Next, in step S28, the power supply from the power supply circuit 27 to the transmission circuit 24 is turned off. As a result, the transmission circuit 24 becomes inactive, and the power consumption is reduced accordingly. That is, GPS
The power consumption of the transmitter 11 can be reduced when the position detection using the satellite is not possible, and the consumption of the battery 29 can be appropriately reduced without obstructing the position detection. Next, in step S30, the transmission flag is set to 0, and the process returns to step S12 to repeat the processing.

If it is still impossible to locate the elderly 2 in the next and subsequent routines, the process branches from step S14 to step S24. Since the transmission flag is set to 0 at this time, the result of the determination in step S24 is obtained. Is YE
S, and jumps from step S26 to step S
Proceed to 28. Thereafter, when positioning of the elderly man 2 is impossible, the loop of step S12, step S14, step S26, step S28, and step S30 is repeated, and the power supply to the transmission circuit 24 is kept off. Will be reduced in power consumption.

(C) Resumption of Positioning When, for example, the elderly person 2 leaves the building and the positioning by GPS satellites becomes possible, the determination result of step S14 becomes YES and the process proceeds to step S16. At this time, since the transmission flag is 0 in the previous routine, the determination result in step S16 is NO, and the process proceeds to step S18 to output a transmission start signal. Thereby, the transmission circuit 24
Is restarted again, the transmission circuit 24 starts operating, and the transmission start signal is transmitted. Upon receiving the transmission start signal, the search management center 1 knows that the transmission of the position information of the old man 2 has been restarted. Next, in step S20, the position information of the old man 2 is transmitted, and in step S22, the transmission flag is set to 1 and the process returns to step S12 to repeat the processing loop. As described above, when the positioning is restarted, the power supply to the transmission circuit 24 is restarted, and a transmission start signal is output first, and then the position information of the old man 2 is transmitted.

D-2. FIG. 5 is a flowchart showing a control program of the search device 13. This program is executed when the power of the search device 13 is turned on. When the power is turned on, the control program stored in the ROM 36 is read out by the control unit 35, and the process is started. First, initialization is performed in step S50. In the initial setting, predetermined initialization processing such as initial reset, clearing of a flag in preparation for a search start, and setting of a work area of the RAM 37 is performed. Then, step S
At 52, a GPS signal (GPS radio wave) including position information transmitted from a plurality of GPS satellites is received, and the received GPS signal is received.
The three-dimensional positioning data (ie, latitude, longitude, altitude) of the search management center 1 is obtained based on the signal, and the current position (specifically, the position of the GPS antenna 31 arranged in the search management center 1) is detected.

Next, in step S54, a process of receiving position information from the transmitter 11 worn by the elderly 2 is performed. The position information from the transmitter 11 is fetched via a public wireless telephone line. In this way, the wireless public telephone line 12
By using, even if the old man 2 moves a long distance, the position can be grasped, which is convenient. Transmitter 11
Is received by the transmission circuit 24 of the transmitter 11.
, And receives all the signals transmitted from the transmission circuit 24. For example, the current location information of the elderly person 2 (the information includes an ID number) is transmitted to the public telephone line 12.
In addition to receiving the telephone signal (that is, receiving the incoming call and taking in the information) when transmitted to the search management center 1 via, a signal other than position information such as a positioning impossible signal and a transmission start signal Also receive.

When information is transmitted intermittently because the power of the transmission circuit 24 of the transmitter 11 is turned off or turned on, this routine is repeated each time step S54 is executed. Capture at the right time. In addition,
When the power of the search device 13 is turned on, the program of the search device 13 is subsequently executed unless the power of the search device 13 is turned off.

Next, an external storage data search process is performed in step S56. In the external storage data search process, the CD-
The map information corresponding to the current position of the old man 2 is searched and read from the CD-ROM 42 via the ROM driver 41. Next, map information display processing is performed in step S58. In the map information display processing, map information corresponding to a predetermined area including the current position of the elderly 2 is displayed on the display device 38. Next, the map information is displayed on the display device 38 in step S60. In this case, a map of the position of the search management center 1 and a range of the area where the elderly 2 are expected to wander are displayed. Next, in step S62, the transmitter 11
It is determined whether or not a positioning impossible signal has been received from.

(A) When no positioning impossible signal is received When no positioning impossible signal is received, step S64
To determine whether the reception flag = 1. The reception flag is set to [1] when a positioning impossible signal is received, and is set to [0] when a positioning impossible signal is not received. However, in the first routine, the reception flag is set to 0 due to initialization. Now, in the first routine, since the reception flag is in the state of 0 due to initialization, the determination result of step S64 is NO, and the process proceeds to step S66. In step S66, the current position of the old man 2 is displayed on the display device 38. At this time, an ID number for identifying the old man 2 is also displayed beside the current position of the old man 2. Thereby, the management operator of the search management center 1 can identify the wandering old man 2 and confirm the current position on the map.

Also, in this elderly person position display processing, the ID
The current position of the old man 2 corresponding to the number is output from the sound output device 39 so as to provide guidance with a synthesized voice (for example, “the old man with the ID number XX has passed the XX intersection”). Note that the area of the map information is automatically switched (ie, the area scrolls) as the elderly person 2 moves. After step S66, the process returns to step S52 to repeat the processing loop. When the positioning impossible signal is not received as described above (when the positioning of the elderly man 2 is possible), steps S52 to S52 are performed in the subsequent routine.
The loop of steps S64 and S66 is repeated, and the current position of the old man 2 is sequentially displayed on the display device 38.

(B) When a positioning impossible signal is received When a positioning impossible signal is received, the determination result of step S62 is YES, and the process branches to step S68.
In step S68, the immediately preceding position information is stored (stored). In the memory processing, the immediately preceding position information is stored in the RAM 37, but may be stored in a storage device such as a hard disk. The immediately preceding position information is the current position information (including the ID number) of the old man 2 of the previous routine received from the transmitter 11 when the positioning impossible signal is not received. Next, in step S70, the position of the old man is displayed on the display device 38 in a different manner. The different aspect is an example in which, for example, when the normal position is displayed in green on the display device 38, the old position is displayed in red.
Instead of red, for example, the display of the position of the elderly person may be blinked. In addition to the display, a voice message may be output, for example, "Positioning of an old man has become impossible. The last position information is stored."

As a result, the position information immediately before the positioning of the old man 2 becomes impossible is stored including the ID number, and the display mode of the display device 38 is different. It is certainly recognized that it has become impossible. Next, the reception flag is set to 1 in step S72, and it is determined in step S74 whether a transmission start signal has been received. When the positioning of the old man 2 is impossible, no transmission start signal is received, so the process returns to 68 and the processing is repeated. Therefore, the position information immediately before the old man 2 including the ID number remains displayed on the display device 38.

(C) Resumption of Positioning When, for example, the elderly man 2 leaves the building and the positioning by GPS satellites becomes possible, the transmitter 11 transmits a transmission start signal. When this search start signal is received by search device 13, the determination result of step S74 becomes YES and the process returns to step S52. Then, the processing after step S52 is executed. At this time, the position information from the transmitter 11 after the positioning is restarted is received in step S54. After that, the process goes through steps S56 to S60 to step S60.
The process proceeds to step S62, but in this routine, since the positioning impossible signal is not received in step S62, the determination result in step S62 is NO, and the process proceeds to step S64. Step S
At 64, it is determined whether the reception flag is 1 or not. Since the reception flag is set to 1 this time (because the flag was set earlier in step S72), the process proceeds to step S76, and the notice information of the reception restart is displayed on the display device 38. indicate.

The notice information for resuming reception is, for example, an example in which when the normal position is green, the positioning impossible state is red and the old position is displayed on the display device 38, the old position for resuming reception is displayed in light blue. . Instead of light blue, for example, the display of the old man's position blinks in a cycle suitable for resuming reception (different from the blinking cycle when positioning is impossible)
May be. In addition to the display, a voice message may be output such as, for example, "Because the positioning of the old man has become possible, be careful of your actions." As described above, the search device 13 that receives the position information from the transmitter 11 can receive the signal indicating the start of transmission and prepare for the restart of the reception of the position information.
It is possible to reliably track the transmitter 11 (that is, the elderly 2).

Next, at step S78, the reception flag = 0.
And the position of the elderly is displayed on the display device 38 in step S66. Then, the process returns to step S52.
In the next routine, since the reception flag is set to 0, the determination result of step S64 is NO, and the process jumps from step S64 to step S66, returns to step S52, and repeats the process. Therefore, the caution information for resuming reception is displayed only once, and thereafter, step S52.
Steps S64 and S66 to step S again
Since the processing loop returning to step 52 is repeated, the notice information for resuming reception is not displayed. As described above, when the positioning is restarted, the transmission start signal from the transmitter 11 is received, and the warning information of the reception restart is displayed, and then the display of the current position of the elderly person 2 is restarted.

In this way, when the management position of the searching device 13 confirms the current position (including the ID number) of the wandering elderly person 2 on the map, the confirmation information is transmitted through the telephone line (or FAX) 14 to the searcher's home. 15 (the searcher is, for example, the family of the elderly 2). Thereby, the searcher's house 15 can know the position of the wandering old man 2 and can take appropriate measures such as picking up. When the old man 2 receives a positioning impossible signal due to, for example, entering the inside of a building, the immediately preceding position information (including the ID number) is stored, and the old man position is displayed on the display device 38 in a different manner.
When the elderly person 2 comes out of the building and becomes ready for positioning by the GPS satellites, after receiving the transmission start signal from the transmitter 11, it receives the position information from the transmitter 11 after the positioning is resumed, and resumes the reception. Attention information is displayed on the display device 38, and the display of the current position of the old man 2 is restarted.

As described above, in the present embodiment, when the positioning of the elderly person 2 becomes impossible with the transmitter 11, the power supply to the transmitting circuit 24 is turned off after transmitting the positioning impossible signal to the searching device 13. When the position returns to a state where positioning is possible, the transmission circuit 2
4 is turned on to search for a transmission start signal.
Since the transmission of the position information of the old man 2 has been started after the transmission to the first person, the following effects can be obtained. (1) Since the power supply to the transmission circuit 24 is stopped in a state where the positioning of the old man 2 is impossible, the power consumption of the transmitter 11 can be reduced, and the consumption of the battery 29 can be reduced. . (2) Therefore, it is possible to reduce the size and weight of the battery 29 in response to the demand that the battery 29 to be mounted on the portable transmitter 11 should be as small and lightweight as possible. (3) The capacity of the battery 29 can be reduced.

E. Modification E-1. Modification 1 As a state where positioning of an elderly person is impossible, for example, there is a case where an elderly person enters the premises of a Shinkansen station. In this case, since it is difficult for the old man to get on the Shinkansen, even if the positioning of the old man does not become impossible, if the old man enters a predetermined area (predetermined distance) centered on the station of the Shinkansen, the search center The alarm signal may be transmitted to the user. Upon receiving the alarm signal, staff at the search center will rush to the station to protect the wandering elderly. The range within the predetermined area centered on the Shinkansen station is, for example, a distance corresponding to the time during which the staff of the search center can call the station. When the moving speed of the old man is high, the predetermined area is set large. In addition, a warning sound (for example, a buzzer or an audio warning accompanied by a message notifying that the person is a wandering old man) can be issued by a transmitter when the person enters the Shinkansen station. Is also good. By doing so, it becomes possible for the people around to notice the presence of the wandering elderly and to take appropriate measures (for example, to inform the station staff).

E-2. Modification 2 The transmitter (mobile information device) carried by the elderly and the search management center may be connected via a predetermined radio communication radio wave instead of the public telephone communication network. Then, the position information from the transmitter is transmitted to the search management center by wireless communication. Processing when the elderly cannot be located,
The return process and the like when the positioning is possible are the same as in the above-described embodiment. By using such radio waves,
There is an advantage that communication costs are lower than when a public telephone communication network is used. The use of a public telephone communication network has the merit of being able to search for nursing home location information over long distances, but examples of using radio communication radio waves include, for example, the vicinity of a wandering old man's house, or a nursing home. Relatively close is convenient.

E-3. Modification 3 The search device may determine that the positioning of the elderly person is possible or impossible, and remotely issue a command to stop / return transmission of information from the transmitter using the search device. By doing so, it is possible to reduce the calculation load of the control unit in the transmitter. Further, in the search device, it is not necessary to consider the calculation load of the control unit (for example, a CPU having a large calculation capability may be used). Stop / return processing can be performed.

E-4. Modification 4 Even in the case where the number of receivable GPS satellites is less than four, the transmitter has an area for transmitting the reception-related information, and in this area, information on the position of the receivable GPS satellites and the number of receivable satellites Control for transmitting at least one is performed.
Here, if the number of receivable GPS satellites is three, position detection calculation on a plane is possible, but altitude cannot be detected. If the number of receivable GPS satellites is two or less, the position cannot be calculated. When transmitting a reception state in which the number of receivable GPS satellites is three or less, it is highly likely that the user is not in the back of a building or the like and is in an area where reception is difficult, for example, a side or entrance of a building or a window. It is supposed that.

Such a state occurs in a building / side, in a forest, in a bullet train, and the like. Reception conditions (patterns) are different in those places. Therefore, for example, a field where the state of reception of two GPS satellites continues, for example, a field having trees and buildings around a relatively distant place, or a place where reception of GPS satellites is repeated two or one (for example, Places near the outer wall of the building), places where one signal is repeatedly received and disappeared (for example, inside a train such as a Shinkansen), places where only one satellite directly above can be received (for example, under a large tree or relatively close) (A place surrounded by buildings, etc.), the pattern of the receiving satellite position, the number of received satellites, and the time change of the number of received satellites differs depending on the receiving location. It is highly probable that it is possible to estimate from the measured position immediately before the position calculation is impossible along with the surrounding situation on the map, even when the position calculation by GPS satellite reception is impossible. It made.

For this purpose, if the number of receiving satellites is even one, control is performed so that the information is continuously transmitted. When the number of receiving satellites becomes 0 (for example, when the satellite completely enters the building), the transmission is stopped. By performing such control, the identification of the receiving satellite (position), the number of receiving satellites, and the change over time in the receiving state can be performed while reducing the power consumption of the transmitter and the consumption of the battery. The position of the moving object can be estimated to some extent from the position information immediately before the position calculation is impossible and the map information around the position information, and the possibility of at least narrowing down the range where the moving object is located is increased.

E-5. Modification 5 When the remaining amount of the power supply is equal to or more than a predetermined value, the transmission restricting unit of the transmitter stops transmission of the reception-related information when the number of receivable GPS satellites is 0, and the remaining amount of the power supply has a predetermined value. When the value becomes smaller than the value, control is performed so that the number of receivable GPS satellites is two and the transmission of the reception-related information is stopped. In this way, as described above, even if the number of receiving satellites is small, the power consumption of the transmitter is reduced and the battery consumption is reduced, and the position information immediately before the reception position cannot be calculated and the map information around the position information are used. The effect that the position of the moving body can be estimated can be obtained.

E-6. Modification 6 The transmission restricting means of the mobile information device provides an area for transmitting reception-related information even when the number of receivable GPS satellites is less than four, and in this area, information on the position of receivable GPS satellites, The search device transmits at least one of the possible number of satellites, and the search device receives at least received satellite position information and information on the number of received satellites from the display means for displaying the search position information of the mobile object and the transmission means in the mobile information device. And auxiliary information display control means for controlling the display to display search auxiliary information based on the information. In this way, the search auxiliary information is displayed on the search device, so that the position of the mobile information device can be estimated (the principle is as described above) while reducing the power consumption of the mobile information device (transmitter). Becomes possible.

E-7. Modification 7 When the auxiliary information display control means of the search device receives a signal indicating that the position detection processing is impossible from the transmitting means in the mobile information device, the auxiliary information display control means stores the position information immediately before the signal together with the time information and the mobile information information. At least information on the received satellite position information and the number of received satellites is received from the transmitting means in the apparatus, and control is performed so that search auxiliary information based on this information is displayed on the display means. In this way, even if the search device receives the information indicating that the position detection processing is impossible, the position of the mobile information device can be estimated based on the search auxiliary information, which is convenient.

E-8. Modification 8 When the auxiliary information display control means of the search device receives a signal indicating that the position detection processing is impossible from the transmission means of the mobile information device, the display of the position information immediately before the signal is different from the normal display. In addition to displaying on the display means, at least receiving satellite position information and information on the number of received satellites are received from the transmitting means in the mobile information device, and control is performed so that search assistance information based on this information is displayed on the display means. In this way, the fact that the search device has received the position detection processing impossibility can be easily determined based on the fact that the display of the position information immediately before it is different from the display at the time of normality, which is convenient. Also, the position of the mobile information device can be estimated based on the search assistance information.

E-9. Modification 9 The auxiliary information display control means of the search device receives at least information on the position of the received satellites and information on the number of received satellites from the transmission means of the mobile information device, and displays the search auxiliary information based on the information on the display means. At the same time, when the transmission of the position information from the transmitting means in the mobile information device is restarted, the position information received after the restart is displayed on the display means in a display manner to call attention. With this configuration, the position of the mobile information device can be estimated based on the search assistance information, and when the transmission of the position information is restarted, the position information received after the restart is displayed in a display mode that calls attention. Thus, the search position of the moving object can be reliably grasped.

The embodiments of the present invention are not limited to the above-described embodiments, and various modifications as described below are possible. (A) Regarding the application of the present invention, the moving object is not limited to the elderly, and can be widely applied to vehicles such as vehicles, airplanes, ships (boats, yachts, etc.), and motorcycles. Also,
The present invention can also be applied to a golf cart position confirmation system, taxi dispatch management, truck operation management, fighting vehicles, and the like. (B) The display color on the display device may be finely changed in a plurality of stages in accordance with the position, the moving speed, the moving distance, the length of the non-positionable time of the moving body, and the like.

[0066]

【The invention's effect】

(1) According to the first aspect of the invention, when the mobile body information device (for example, a transmitter) cannot perform the self-position detection processing of the mobile body by the position detection means, the position detection processing cannot be performed. Since the transmission of the position information by the transmission means is stopped after transmitting the signal notifying the transmission of the position information and the transmission of the position information by the transmission means is restarted when the position detection processing becomes possible, the following effects are obtained. Obtainable.
Since the power supply to the transmitting unit is stopped in a state where the positioning of the mobile unit is impossible, the power consumption of the mobile information device can be reduced, and the consumption of the power unit (for example, a battery) can be reduced. it can. Therefore, in response to the demand that the power supply means to be mounted on the mobile information device to be carried should be as small and lightweight as possible, downsizing of the power supply means,
Weight reduction can be achieved. Also, the capacity of the power supply means can be reduced.

(2) According to the second aspect of the invention, the position detecting means includes a GPS device that receives a positioning radio wave from a GPS satellite and measures the current position of the moving object.
The transmitting unit wirelessly transmits the current position of the moving object to the outside, and thereby applies the present invention to a device using a GPS device, thereby reducing power consumption of a recently mounted device equipped with a GPS device. Can be. In addition, by using wireless communication (for example, a public wireless telephone line or a wireless signal from a transceiver), even if the moving object moves a long distance, the position of the moving object can be grasped, which is convenient.

(3) According to the third aspect of the invention, the transmission restricting means transmits the signal when the number of positioning radio waves received from the GPS satellites decreases and falls below at least the number of satellites for which position calculation is possible. By controlling the transmission of the position information by the means, it is possible to reduce the power consumption of the mobile information device when the position detection using the GPS satellites cannot be performed, and to hinder the position detection. It is possible to appropriately reduce the consumption of the power supply means (for example, a battery) while eliminating it.

(4) According to the invention described in claim 4, the transmission restricting means provides an area for transmitting the reception-related information even when the number of receivable GPS satellites is less than four, and the area is capable of receiving. By transmitting at least one of the information on the position of the GPS satellite and the number of receivable satellites,
By observing the temporal change in the identification (position) of the GPS receiving satellites, the number of receiving satellites, and the receiving state while reducing the power consumption of the mobile information device and the consumption of the power supply means, the receiving position immediately before the calculation of the receiving position cannot be calculated. The position of the moving object can be estimated to some extent from the position information and the map information around the position information, and the possibility that at least the range where the moving object is located can be increased.

(5) According to the fifth aspect of the present invention, when the remaining amount of the power supply is equal to or more than a predetermined value,
When the number of receivable GPS satellites is 0, transmission of the reception-related information is stopped, and when the remaining amount of the power supply unit becomes smaller than a predetermined value, the transmission of reception-related information is stopped when the number of receivable GPS satellites is two. Thus, even if the number of GPS receiving satellites is small, the power consumption of the mobile information device is reduced and the consumption of the power supply means is reduced. The position of the moving object can be estimated from the information.

(6) According to the invention described in claim 6, after the transmission restricting means stops the transmission of the position information by the transmitting means, when the position detecting means is ready to perform the position detecting process, the transmission starting means is started. By transmitting a signal notifying that the position information has been transmitted by the transmitting means, control is performed to resume transmission of the position information, so that a side (for example, a search device) that receives position information from a mobile information device (for example, a transmitter) A signal notifying the start of transmission can be received to prepare for the restart of the reception of the position information, and the mobile information device can be reliably tracked.

(7) According to the seventh aspect of the present invention, there is provided a mobile object search system including a mobile object information device and a search device. When it becomes impossible, a signal indicating that the position detection processing is impossible is transmitted, and then the transmission means stops transmitting the position information. When the position detection processing becomes possible, the transmission means transmits the position information. Since the control is performed to restart, the power consumption of the mobile information device can be reduced, and the consumption of the power supply means can be reduced. In response to the demand that the power supply means to be mounted on the mobile information device to be carried is as small and lightweight as possible, it is possible to achieve a reduction in the size and weight of the power supply means. Also, the capacity of the power supply means can be reduced.

(8) According to the invention described in claim 8, the search device is provided with display means for displaying the search position information of the moving body, and a signal for notifying that the position detection processing is impossible is transmitted from the transmission means in the mobile body information device. Upon receipt, the position information immediately before that is stored together with the time information, and the display of the position information is displayed on the display means in a manner different from the normal display,
When the transmission of the position information is restarted, the position information received after the restart is controlled to be displayed on the display means in a display manner that calls attention, so that the search position of the moving object can be reliably grasped. it can.

(9) According to the ninth aspect of the present invention, the transmission restricting means of the mobile information device provides an area for transmitting the reception-related information even when the number of receivable GPS satellites is less than four. In the area, at least one of the information on the position of the receivable GPS satellite and the number of receivable satellites is transmitted, and the search device is configured to display the search position information of the mobile object from the display device and the transmission device in the mobile information device. At least receiving satellite position information, information about the number of receiving satellites, and auxiliary information display control means for controlling to display search auxiliary information based on this information on the display means, the search device has Is displayed, it is possible to estimate the position of the mobile information device while reducing the power consumption of the mobile information device.

(10) According to the tenth aspect of the present invention,
When the auxiliary information display control means of the search device receives a signal indicating that position detection processing is impossible from the transmission means in the mobile information device, the auxiliary information display control means stores the position information immediately before that signal together with time information and transmits the signal in the mobile information device. At least receiving satellite position information and information on the number of receiving satellites are received from the means, and control is performed so that search auxiliary information based on this information is displayed on the display means. Also, the position of the mobile information device can be estimated based on the search assistance information, which is convenient.

(11) According to the eleventh aspect,
The auxiliary information display control means of the search device, when receiving a signal indicating that the position detection processing is impossible from the transmitting means in the mobile information device, displays the position information immediately before it on the display means in a manner different from the normal display. By displaying and displaying at least receiving satellite position information and information on the number of receiving satellites from the transmitting means in the mobile information device, and displaying search auxiliary information based on this information on the display means, Can be easily determined based on the fact that the display of the position information immediately before it is different from the display at the time of normality, which is convenient. Also, the position of the mobile information device can be estimated based on the search assistance information.

(12) According to the twelfth aspect,
The auxiliary information display control means of the search device receives at least information on the received satellite position information and the number of received satellites from the transmission means in the mobile information device, and displays search auxiliary information based on the information on the display means, When the transmission of the position information from the transmitting unit in the body information device is resumed, the position information received after the restart is displayed on the display unit in a display manner that draws attention, so that the mobile body information device is Can estimate the position of
When the transmission of the position information is restarted, the position information received after the restart is displayed in a display mode that calls attention, so that the search position of the moving object can be reliably grasped.

[Brief description of the drawings]

FIG. 1 is a block diagram of an embodiment of an elderly person search system according to the present invention.

FIG. 2 is a diagram showing a configuration of a transmitter.

FIG. 3 is a diagram showing a configuration of a search device.

FIG. 4 is a flowchart showing a control program of a transmitter.

FIG. 5 is a flowchart showing a control program of the search device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Search management center 2 Elderly person (mobile body) 11 Transmitter (mobile body information device) 13 Search device 21, 31 GPS antenna 22 GPS receiver 24 Transmission circuit (transmission means) 25 Control circuit (transmission restriction means) 26 Adjustment switch ( (Transmission control means) 27 power supply circuit (power supply means) 29 battery 32 GPS receiver 33 telephone device (reception means) 34 switch input unit 35 control unit 36 ROM 37 RAM 38 display device (display means) 41 CD-ROM driver 42 CD- ROM

Claims (12)

[Claims] 1. A position detecting means for detecting a self-position of a moving body, a transmitting means for transmitting position information of the moving body detected by the position detecting means to the outside, and supplying power to the position detecting means and the transmitting means. When the position detection processing by the power supply means and the position detection means becomes impossible, a signal indicating that the position detection processing is impossible is transmitted, then the transmission of the position information by the transmission means is stopped, and the position detection processing is possible. And a transmission restricting means for controlling transmission of the position information by the transmitting means when the transmission information is in a normal state. 2. The position detecting means receives a positioning radio wave from a GPS satellite and measures a current position of the moving object.
The mobile information apparatus according to claim 1, further comprising an S device, wherein the transmitting unit wirelessly transmits the current position of the mobile to the outside. 3. The control for stopping transmission of position information by the transmitting means when the number of positioning radio waves received from the GPS satellites decreases and falls below at least the number of satellites for which position calculation is possible. 3. The mobile information device according to claim 2, wherein: 4. The transmission restricting means has an area for transmitting reception-related information even when the number of receivable GPS satellites is less than four. In the area, information on the position of receivable GPS satellites, 4. The method according to claim 3, wherein at least one of the number of satellites is transmitted.
The mobile information device according to the above. 5. When the remaining amount of the power supply means is equal to or more than a predetermined value, the transmission restricting means sets a receivable G
When the number of PS satellites is 0, transmission of reception-related information is stopped, and when the remaining amount of the power supply unit becomes smaller than a predetermined value, a GP that can be received is received.
5. The mobile information apparatus according to claim 4, wherein switching is performed so that transmission of reception-related information is stopped when the number of S satellites is two. 6. The transmission restricting means, after stopping the transmission of the position information by the transmitting means, and transmitting a signal notifying the start of transmission when the state detecting means is ready to perform the position detection processing, and then transmitting the signal. 2. The mobile information device according to claim 1, wherein control is performed to restart transmission of the position information by the means. 7. A mobile object search system in which each of a plurality of movable mobile objects has a mobile object information device, and a signal from each mobile information device is received by a search device to search for a position of each mobile object. Wherein the mobile object information device includes: a position detecting means for detecting a self-position of the mobile object; a transmitting means for transmitting the position information of the mobile object detected by the position detecting means to the outside; a position detecting means and transmitting Power supply means for supplying power to the means, and when it becomes impossible to perform position detection processing by the position detection means, transmitting a signal indicating that position detection processing is impossible, and then stopping transmission of position information by the transmission means. A transmission restricting unit that controls transmission of the position information by the transmitting unit when the position detection process becomes possible. Receiving means for receiving location information of the body, on the basis of the positional information of the movable body received by the receiving means,
And a search means for searching for the position of the moving object. 8. A search device, comprising: display means for displaying search position information of a moving object; and position information immediately before receiving a signal indicating that position detection processing is impossible from a transmission means in the mobile object information device. Is stored together with the time information, and the display of the position information is displayed on the display means in a manner different from the normal display,
When the transmission of the position information is resumed, the display device includes a display mode changing unit that controls the display unit to display the position information received after the restart in a display mode that draws attention. Item 7. The mobile object search system according to Item 7. 9. The transmission restricting means of the mobile information device, wherein an area for transmitting reception-related information is provided even when the number of receivable GPS satellites is less than 4, and the area relates to the position of receivable GPS satellites. Transmitting at least one of information and the number of receivable satellites, the search device displays display position information of a mobile object, and at least reception satellite position information and reception satellite information from a transmission unit in the mobile information device. Receiving information about the number,
8. The mobile object search system according to claim 7, further comprising: auxiliary information display control means for controlling the display to display search auxiliary information based on the information. 10. When the auxiliary information display control means of the search device receives a signal indicating that position detection processing is impossible from the transmission means of the mobile information device, the auxiliary information display control means stores the immediately preceding position information together with the time information. Receiving at least received satellite position information and information on the number of received satellites from a transmitting means in the mobile information apparatus, and controlling to display search assist information based on the received information on a display means. 9. The mobile object search system according to 9. 11. The auxiliary information display control means of the search device, when receiving a signal indicating that position detection processing is impossible from the transmission means in the mobile information device, displays the position information immediately before the signal in a normal state. And displaying at least display satellite information based on the received satellite position information and the number of received satellites from the transmitting means in the mobile information device. The mobile object search system according to claim 9, wherein the control is performed. 12. The auxiliary information display control means of the search device receives at least received satellite position information and information on the number of received satellites from a transmitting means in the mobile information device,
The search auxiliary information based on this information is displayed on the display means, and when the transmission of the position information from the transmitting means in the mobile information device is restarted, the position information received after the restart is displayed in a display manner to call attention. 10. The mobile object search system according to claim 9, wherein the information is displayed on a means.