JP2013054518A - Radio distance measuring switch, radio distance detecting system, portable terminal, program thereof, and wireless tag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radio distance measuring switch capable of favorably detecting a thing left behind or the like while reducing the consumption of batteries, and having high convenience and practicality, a radio distance detecting system, a portable terminal, a program thereof, and a wireless tag.SOLUTION: A radio detection program transmits an inquiry signal at intervals according to an operation mode. Wireless tags 300 of respective carrying items transmit their own IDs as response signals. When the response signals are received by a near field communication part of a cellular phone 100, the radio detection program detects the distances from the intensities of the response signals and, when a signal becomes out of reach of a setting value of the operation mode, turns on a display alarm of a carrying button of the corresponding carrying item and at the same time commands an output of an alarm to the wireless tag 300 of the carrying item under a caution needed mode. In the corresponding wireless tag 300, a control part outputs a drive signal to a sound production part and an audible alarm is output.

Description

  The present invention relates to a wireless distance measurement switch, a wireless distance detection system, a portable terminal, a program for the same, and a wireless tag that detect forgotten things by using short-range wireless such as Bluetooth (registered trademark).

  As a conventional technique for detecting forgotten things using short-range wireless communication, for example, there is “IC tag detection device and mobile phone” described in Patent Document 1 below. According to this, an IC tag detection device for detecting an IC tag is built in the mobile phone. On the other hand, IC tags are attached to belongings such as umbrellas, wallets, and hats. When any one of the detection target IC tags cannot be detected by the IC tag detection device, the fact is notified by the alarm function of the mobile phone.

Japanese Patent Laid-Open No. 2004-13789

  By the way, the distance for detecting the forgotten object does not necessarily need to be the same depending on the object, and the forgotten object can be detected better if it is appropriately set as necessary. Moreover, although it is more convenient to shorten the interval for detecting the IC tag, the battery of the mobile phone becomes very exhausted.

  The present invention focuses on the above points, and is a highly convenient and practical wireless distance measurement switch and wireless distance detection system that can detect forgotten things and the like while reducing battery consumption. An object is to provide a portable terminal, a program thereof, and a wireless tag.

  The wireless distance detection system of the present invention is provided in a portable terminal provided with a short-range communication means, at least one wireless tag attached to a detection target, capable of wireless communication with the short-range communication means, and provided in the portable terminal. A wireless detection means for making an inquiry to the wireless tag by the short-range communication means and detecting whether or not the wireless tag is in the vicinity, and comprising the inquiry interval or the portable terminal and the wireless tag And a plurality of operation modes having different detection distances.

  One of the main modes is that the plurality of operation modes have a distance for outputting the alarm of 10 m, a power saving mode for performing the inquiry once per minute, and a distance for outputting the alarm. And a caution mode in which the inquiry is made at a rate of 6 times per minute. In another embodiment, the mobile terminal includes an acceleration sensor, and when the movement of the mobile terminal is detected by the acceleration sensor, the inquiry interval in the wireless detection unit is shortened. And Alternatively, an alarm output means for outputting an alarm is also provided to the detection target, and an alarm is output from both the portable terminal and the detection target when the distance for outputting the alarm is reached. Furthermore, an alarm output means for outputting an alarm also to the detection target is provided, the interval of the inquiry is monitored, and when there is no inquiry within a predetermined time, the alarm output means outputs an alarm. To do.

  The portable terminal of the present invention is used in the wireless distance detection system, and includes the short-range communication means, the wireless distance detection means, and the alarm output means, and the detection operation of the detection target in the plurality of operation modes. It is characterized by performing. The wireless distance detection program of the present invention is executed by the portable terminal, functions as the wireless distance detection means, and performs detection operation of a detection target in the plurality of operation modes.

  The wireless tag of the present invention is used in any one of the wireless distance detection systems, and outputs a response signal in response to an inquiry from the short-range communication means. One of the main forms is used in the wireless distance detection system, characterized in that it outputs a response signal in response to an inquiry from the short-range communication means and includes the alarm output means. One of the other forms is used in the wireless distance detection system, outputs a response signal to the inquiry from the short-range communication means, monitors the inquiry interval, and makes an inquiry within a predetermined time. When there is no alarm, the alarm output means outputs an alarm.

  The wireless distance measurement switch according to the present invention is capable of wireless communication between the short-range communication means of the portable terminal and at least one wireless tag attached to the detection target, and is an inquiry interval or between the portable terminal and the wireless tag. In the plurality of operation modes in which at least one of the detection distances is different, the short-range communication means makes an inquiry to the wireless tag, measures the distance to the wireless tag, and operates based on the measurement result. . The above and other objects, features and advantages of the present invention will become apparent from the following detailed description and the accompanying drawings.

  According to the present invention, since a plurality of operation modes having different detection distances and detection intervals are provided, it is possible to detect forgotten things and the like well while reducing battery consumption.

It is a block diagram which shows the whole Example 1 of this invention. It is a block diagram which shows the structure of the mobile telephone of the said Example 1. FIG. It is a figure which shows the structure of the wireless tag of the said Example 1, and the example of ID table. It is a figure which shows the example which shows the setting operation | movement in the said Example 1, and its setting screen. It is a sequence diagram which shows the detection operation of the thing left behind in the said Example 1. It is a figure which shows an example of the recognition screen of the possessed goods in Example 2 of this invention. It is a sequence diagram which shows the setting operation | movement in the said Example 2. It is a sequence diagram which shows the detection operation of the thing left behind in the said Example 2. (A) is a flowchart which shows the operation | movement at the time of the inquiry in the said Example 2, (B) is a flowchart which shows operation | movement by the side of a radio | wireless alarm tag.

  Hereinafter, the form for implementing this invention is demonstrated in detail based on an Example.

  FIG. 1 shows the overall configuration of the present embodiment, which is mainly composed of a mobile phone 100. As the detection target 200, the wallet 210, the key 220, the bulk 230, and the bag 240 are shown, but may be increased or decreased as necessary. Each detection target 200 is provided with key holders 212, 222, 232, and 242, and the wireless tag 300 is built in each key holder.

  Among these, the cellular phone 100 has a block configuration as shown in FIG. 2, for example, and is configured around a control processing unit 102 configured by an MPU or the like. The control processing unit 102 includes a display unit 110 such as a liquid crystal display, an input unit 112 such as a touch panel and a numeric keypad, a speaker 114 that outputs a ring tone, a receiver 115 that outputs voice during a call, and a microphone 116 that inputs audio. , A communication unit 118 that performs a telephone function, a camera 120 that captures an image, a GPS 122 that acquires position information, a calendar / clock 124, a short-range communication unit 126 such as bluetooth (registered trademark), and an acceleration that detects the direction of the mobile phone 100 A sensor 127 and a memory 130 are connected to each other. Operation control of these units is performed by the control processing unit 102.

  These basic configurations are known and are the same as those of a general mobile phone or smartphone. For example, when making a call, when the telephone number of the other party is input at the input unit 112 and an on-hook operation is performed, the call processing unit 118 performs a calling process by the control processing unit 102, and the receiver 115 and the microphone 116. A call is made to the other party using.

  Among the above-described units, the part particularly related to the present embodiment will be described. When performing wireless detection of the present embodiment, the wireless detection program 104 is executed by the control processing unit 102. The wireless detection program 104 may be prepared in advance in the mobile phone 100, but may be acquired and incorporated as a software application by downloading by a user. When the wireless detection program 104 is executed, an ID table 132 is prepared in the memory 130. The ID table 132 is a table indicating the relationship between the ID of the wireless tag 300 and the detection target attached thereto. For example, the wireless tag 300 with tag ID = No. 1 is attached to the wallet, and the wireless tag 300 with tag ID = No. 2 is attached to the key.

  The calendar / clock 124 indicates the date and time, and is for obtaining data of the date and time when the forgotten object is detected, as will be described later. As the short-range communication unit 126, for example, a module capable of communication by bluetooth (registered trademark) is prepared.

  Next, the wireless tag 300 attached to the carried item will be described with reference to FIG. The wireless tag 300 includes a wireless module corresponding to the short-range communication unit 126 of the mobile phone 100 described above, and includes a control unit 301, a transmission / reception unit 302, a memory 304, a power source 306, and a sound generation unit 308. The memory 304 stores a preset ID of the wireless tag 300.

  According to the bluetooth communication standard, it is possible to recognize up to 7 communication partners for each mobile phone and give instructions for communication with each other. There are seven. In addition, although there is a class of radio wave intensity in bluetooth, in this embodiment, for example, a radio wave output “2.5 mW” and a reach distance “10 m” of class 2 are set in the short-range communication unit 126 and the wireless tag 300. Yes.

Of course, a button battery, a solar battery, or the like may be used as the power source 306 for supplying driving power to each unit. However, since the carry-on item is highly likely to vibrate, the battery is charged using a vibration power generator. You may do it.
The basic operation of the control unit 301 of the wireless tag 300 as described above is as follows.
a, an ID transmission operation for transmitting the ID data stored in the memory 304 from the transmission / reception unit 302 when an inquiry is made from the short-range communication unit 126 of the mobile phone 100;
b, an alarm operation for driving the sound generation unit 308 to output an alarm sound when a sound generation instruction is received from the short-range communication unit 126 of the mobile phone 100;
It is.

  Next, the overall operation of this embodiment will be described with reference to FIGS. First, pairing is performed between the short-range communication unit 126 of the mobile phone 100 and the wireless tag 300, and the mobile phone 100 recognizes the wireless tag 300. At this time, the user inputs in advance which wireless tag corresponds to which carried item. The pairing result is stored in the memory 130 of the mobile phone 100 as an ID table 132. FIG. 3B shows an example of the ID table 132 in the case of FIG. The wireless tag 300 with tag ID = No. 1 is the wallet 210, the wireless tag 300 with tag ID = No. 2 is the key 220, and so on. This pairing operation may be performed once when the wireless tag 300 is newly purchased.

  When the user needs to go out, for example, when he / she goes out, the user performs an input operation for detecting forgotten things using the input unit 112 of the mobile phone 100. For example, click the forgotten object detection icon. Then, as shown in FIG. 4A, the wireless detection program 104 is activated (step S10). Thereby, a setting screen is displayed on the display unit 110 of the mobile phone 100 (step S12). FIG. 4B shows an example of the setting screen. Buttons of tag ID = No. 1 to No. 7 corresponding to a maximum of seven recognizable wireless tags 300 are displayed. Which tag ID corresponds to which carrying item is recognized by referring to the ID table 132 of the memory 130 and displayed on the screen. On this screen, the user sets the presence / absence of carrying and the operation mode (step S14).

  For example, when the user carries a wallet, key, or bag, the carrying buttons SA1, SA2, and SA4 are set to “ON”. On the other hand, if the cap is not carried, the carry button SA3 remains “OFF”. Specifically, “ON” is displayed in blue, and “OFF” is displayed in red. This setting result is stored in the ID table 132 (see FIG. 3B).

  Next, the user presses mode setting buttons MA1, MB1, MA2, MB2,... To set the operation mode. When the mode setting buttons MA1, MA2,... Are pressed, a caution mode is selected, and when the mode setting buttons MB1, MB2,. In the caution mode, an inquiry is made to the wireless tag 300 at a rate of 6 times per minute, and an alarm is output when the distance from the carry item is 5 m or more. In the power saving mode, an inquiry is made to the wireless tag 300 at a rate of once per minute, and an alarm is output when the distance from the carried item is 10 m or more. When common settings are made for all items carried, common setting buttons SA, MA, and MB are operated. When the user presses the start button SP after the setting is completed, the wireless detection program 104 shifts to a forgotten object detection operation (step S16).

  Next, the lost article detection operation will be described. The wireless detection program 104 transmits an inquiry signal at intervals according to the set operation mode (step S30 in FIG. 5). Then, the wireless tag 300 of each carried item transmits its own ID as a response signal (steps S32, S34, S36). When these response signals are received by the short-range communication unit 126 of the mobile phone 100, the wireless detection program 104 detects the distance from the received signal strength (step S38). As a result, when the detected distance is within the set value of the operation mode (Yes in step S40), the next response signal transmission operation is performed.

  However, if the detected distance is outside the set value of the operation mode (No in step S40), the carry buttons SA1, SA2,... An alarm output is instructed to the wireless tag 300 of the carried item (step S42). Based on this, in the corresponding wireless tag 300, a drive signal is output from the control unit 301 to the sound generation unit 308, and an alarm sound is output. The alarm display is performed, for example, by displaying a blue carrying button with blinking yellow. At the same time, an alarm sound or vibration may be output. In the power saving mode, radio waves do not reach when the distance exceeds 10 m, so that no alarm sound is output from the wireless tag 300.

  For example, when the detection operation is performed on the wallet 210 in the caution mode, the carry button SA1 corresponding to the wallet 210 changes from blue to blinking yellow when it is detected that the wall is 5 meters away, An alarm sound is output from the wireless tag 300 of the key holder 212 attached to the wallet 210 (step S44).

  At the same time, the wireless detection program 104 acquires position information from the GPS 122, acquires date / time information from the calendar / clock 124, and stores it in the memory 130 as data on the location and time at which the forgotten object was detected (step S46). When the user presses the yellow carrying button SA1, the location and time data are displayed on the display unit 110 (step S48). At this time, you may make it display the point which left the thing on the map.

As described above, according to this embodiment, there are the following effects.
a. Since the power saving mode and the caution mode are provided, forgotten things can be detected well while reducing battery consumption.
b. Since the wireless tag is built in the key holder, it can be easily attached to any object.
c. By using the vibration power generation device as the power source of the wireless tag, the battery can be charged by generating electricity while the user is moving, and the life of the battery can be extended.
d. Since the alarm sound is output even from a forgotten item in the caution mode, the possibility of theft of the carried item is reduced.
e. Since the alarm sound is output from the carrying item when the mobile phone is forgotten, it is possible to detect forgotten things in the mobile phone 100 itself.

  Next, Embodiment 2 of the present invention will be described with reference to FIGS. The basic configurations of the mobile phone 100 and the wireless tag 300 in the present embodiment are the same as those in the first embodiment, but the operations of the wireless detection program 104 and the control unit 301 are different, and the acceleration sensor 127 is used for forgotten object detection. . The acceleration sensor 127 detects the tilt of the mobile phone 100 so that the screen is displayed in the correct orientation when viewed from the user. In this embodiment, the acceleration sensor 127 is shown in FIG. As shown, it functions as a means for detecting acceleration applied to the mobile phone 100. For example, when the user suddenly moves, this is detected by the acceleration sensor 124. In addition, as the short-range communication unit 126 of the present embodiment, a module having a bluetooth radio wave intensity class 3 radio wave output “1 mW” and a reach distance “1 m” is used.

  On the other hand, the wireless tag 300 of the present embodiment also uses a bluetooth radio wave intensity class 3 module. In addition to the operation shown in the first embodiment, the wireless tag 300 according to the present embodiment also has a function of monitoring an inquiry signal reception interval as shown in FIG. 9B described later.

  Next, the overall operation of this embodiment will be described. The point of performing pairing between the short-range communication unit 126 of the mobile phone 100 and the wireless tag 300 and the point of inputting which wireless tag corresponds to which personal belongings are the same as in the above embodiment. is there. When the user needs to go out, for example, when he / she goes out, the user performs an input operation for detecting forgotten things using the input unit 112 of the mobile phone 100. Then, as shown in FIG. 7, the wireless detection program 104 is activated (step S100). Thereby, a setting signal is output from the short-range communication unit 126 (step S102) and received by the transmission / reception unit 302 of the wireless tag 300. In each tag, its own ID is read from the memory 304 by the control unit 301 and output as a response signal from the transmission / reception unit 302 (steps S104 to S108).

  When the response signal is received by the short-range communication unit 126 of the mobile phone 100, the personal belongings that the user has are recognized from the ID (step S110), and the recognized items are displayed on the display unit 110. (Step S112). FIG. 6 shows an example of display. Assuming that No.1, No.2, and No.4 are received as IDs, what corresponds to those IDs can be known by referring to the ID table 132 of the memory 130. In this example, The wallet 210, the key 220, and the bag 240 are recognized as belongings. The recognition result is stored in the ID table 132 and displayed by a check mark on the display unit 110 of the mobile phone 100. By referring to this screen, the user can confirm that he / she has the wallet 210, the key 220, and the bag 240 but does not have the cap 230. If the bulk 230 is also necessary, the user carries the bulk 230, presses the reset button B10 on the screen, and performs the operation of FIG. 7 again. When the user presses the confirmation button B12 on the display screen of FIG. 6 and performs an input for confirming the check (step S114), the wireless detection program 104 shifts to a forgotten object detection operation (step S116).

  Next, the forgotten object detection operation shown in FIG. 8 will be described. The wireless detection program 104 transmits an inquiry signal at an appropriate interval (step S120). Then, the wireless tag 300 of each possessed item transmits its own ID as a response signal (steps S122, S124, S126). When these response signals are received by the short-range communication unit 126 of the mobile phone 100, the wireless detection program 104 refers to the ID table 132 and compares whether or not the checked belongings match the received ID ( Step S128). As a result, if the response signal with a predetermined strength cannot be received at a distance and the checked personal belongings do not match the reception ID, an alarm sound is output from the speaker 114 (step S130). Thereby, the user can know that the thing left behind has occurred. Instead of the alarm sound, a voice output such as “I forgot XX” may be performed, or a display to that effect and vibration may be performed.

  In this case, as shown in FIG. 9A, the wireless detection program 104 monitors the detection output of the acceleration sensor 127 (step S150), and when any movement is detected (Yes in step S152). ) The interval of the inquiry signal is made smaller than normal during a certain period (step S154). For example, an inquiry signal is transmitted at a rate of once every 30 seconds in the normal mode, whereas an inquiry signal is transmitted at a rate of once every 3 seconds in the caution mode in which motion is detected. This operation may be performed for a certain time, for example, about 3 minutes, or may be continued until no movement is detected. For example, when the motion is detected by the acceleration sensor 127, it may be possible to get on and off a train, or to stand up at a restaurant or the like. Therefore, by increasing the frequency of sending inquiry signals, it is possible to promptly detect that a forgotten thing has occurred and notify the user.

In addition, in the wireless tag 300, as shown in FIG. 9B, the control signal is monitored by the control unit 301 (step S160). As a result, when the inquiry signal is not received within the predetermined time (No in step S162), an alarm sound is output from the sound generation unit 308 (step S164). Since the inquiry signal transmission interval is determined in advance as described above, when it cannot be received within a predetermined time and an alarm sound is sounded,
a, forgetting the wallet 210 attached with the wireless tag 300, the distance between the mobile phone 100 and the wallet 210 exceeds a predetermined value, or
b, Wallet 210 etc. are brought, but forgetting the cellular phone 100, the distance between the two becomes a predetermined distance,
there is a possibility. In this example, since the radio wave intensity class 3 of bluetooth is used, an alarm sound is output when the distance is 1 m or more.

  Thus, when the wallet 210 or the like is forgotten, a warning to that effect is also given on the mobile phone 100 side as described above, so that the user can know that the wallet 210 or the like has been forgotten. On the other hand, when the mobile phone 100 is forgotten, a warning is given from the wireless tag 300 such as the wallet 210, so that the user can know that the mobile phone 100 has been forgotten. In addition, since an alarm sound is output not only from the forgotten mobile phone 100 but also from the wallet 210, the user can search for the forgotten object by relying on the sound. In addition, since the third party also hesitates in acquiring an alarm sound, the risk of theft is reduced.

As described above, according to the present embodiment, the following effects can be obtained in addition to the above embodiment.
a. Since it is decided to automatically recognize the carry-on item when going out, it is possible to save the input setting.
b. Inquiries are made at a relatively large time interval during normal times, and when an attention is required when motion is detected, an inquiry is made at a small time interval. , Can effectively detect forgotten things.

  In the above description, the wireless tag 300 monitors the inquiry signal reception interval shown in FIG. 9B and outputs an alarm sound. This is detected when the mobile phone 100 is forgotten. If there is no such need, a wireless tag with a simple structure having a function of simply transmitting its own ID in response to an inquiry, for example, a passive device that operates even without a power source A type of wireless tag may be used. Further, a wireless tag such as the present embodiment may be attached to a highly important carry item such as a wallet, and a passive type radio tag may be attached to a less important carry item.

  In addition, when the movement of the mobile phone 100 is detected by the acceleration sensor 127 of the mobile phone 100, it is checked whether or not the wireless detection program 104 is activated. Also good. It is considered that the mobile phone 100 moves when going out. In that case, if the user forgets to start the wireless detection program 104, the forgotten object cannot be detected, so that the wireless detection is performed by displaying such information on the screen or outputting an audio signal to that effect. The program 104 is prompted to start.

Next, another modification of the present invention will be described as a third embodiment.
(1) Weather information is acquired by the wireless detection program 104 at the time of setting. When the probability of precipitation is 50% or more and the user does not have the umbrella 230, or when the probability of precipitation is 50% or less and the owner has the umbrella 230, the fact is inquired on the setting screen or by voice. As a result, it is possible to prevent inconveniences such as forgetting to hold a cocoon, which is likely to be necessary, or conversely, having a high possibility that the cocoon is unnecessary.
(2) A lock device is provided on the bag so as to be locked and not opened when a signal from the wireless tag 300 detected as a forgotten item is received, and the inside is protected when the bag is stolen.
(3) When the battery level on the wireless tag 300 side becomes low, this is notified to the mobile phone 100 side, and a message to that effect is displayed, thereby prompting battery replacement or charging.
(4) The end of the wireless detection operation may be ended by operating an end button (not shown) on the setting screen shown in FIG. 4 (B). When it is confirmed from the output of the GPS 122 that it has arrived at a preset point, such as having arrived at the workplace, etc., it may be automatically terminated, and a function related to the wireless detection program 104 may be provided. That's fine.

In addition, this invention is not limited to the Example mentioned above, A various change can be added in the range which does not deviate from the summary of this invention. For example, the following are also included.
(1) In the above embodiment, the distance between the mobile phone and the carry-on item is detected and an alarm is output. However, if considered broadly, the distance measurement is performed wirelessly and the alarm output switch is turned on. Think of it as a switch.
(2) The type and number of items carried in the embodiment may be increased or decreased as necessary. According to the current bluetooth standard, it is up to seven, but is not limited to the standard. The output intensity and reach distance of radio waves are the same, and may be set as needed. The same applies to the inquiry time interval and the distance to be detected as a forgotten item, and both or one is set as appropriate.
(3) In the above-described embodiment, the wireless tag is attached to the carry item as a key ring, but it may be attached as a badge or the tag itself may be directly attached to the carry item.
(4) In the above-described embodiment, the wireless tag is attached to the carry item to prevent forgotten items, but the present invention can also be used to prevent placement. In addition, by letting a person such as a child or an elderly person carry a wireless tag, it can be used for prevention / discovery of lost children, discovery of deaf persons, and the like.
(5) Although the case where a mobile phone is used has been described in the above embodiment, the present invention can be applied to various mobile terminals such as a smartphone, a PHS, a PDA, and an electronic book terminal. Moreover, although the case where bluetooth was used as the short-range communication method was shown in the above embodiment, other methods such as a wireless LAN may be adopted. You may comprise the exclusive terminal only by the module for near field communication.

  According to the present invention, since it is provided with a plurality of operation modes having different detection distances and detection intervals, it is possible to detect forgotten things, etc. while reducing battery consumption, and for convenience and practicality. It is suitable for a high forgetfulness detection system or a lost child detection system.

DESCRIPTION OF SYMBOLS 100: Mobile phone 102: Control processing part 104: Wireless detection program 110: Display part 112: Input part 114: Speaker 115: Receiver 116: Microphone 118: Call part 120 ,: Camera 122: GPS
124: calendar / clock 126: short-range communication unit 127: acceleration sensor 130: memory 132: ID table 200: detection target 210: wallet 212, 222, 232, 242: key holder 220: key 230: bulk 240: bag 300: wireless Tag 301: Control unit 302: Transmission / reception unit 304: Memory 306: Power source 308: Sound generation unit B10: Reset button B12: Confirmation buttons MA1, MA2,...: Mode setting buttons SA, MA, MB: Common setting buttons SA1, SA2, SA4: Carrying button SP: Start button

Claims (11)

A mobile terminal equipped with a short-range communication means;
At least one wireless tag capable of wireless communication with the short-range communication means and attached to a detection target;
Provided in the portable terminal, comprising a wireless detection means for making an inquiry to the wireless tag by the short-range communication means and detecting whether the wireless tag is in the vicinity;
A wireless distance detection system comprising a plurality of operation modes in which at least one of the inquiry interval or the detection distance between the portable terminal and the wireless tag is different. The plurality of operation modes are:
A power saving mode in which the distance for outputting the alarm is 10 m and the inquiry is performed once per minute;
A warning mode in which the distance for outputting the alarm is 5 m and the inquiry is made at a rate of 6 times per minute;
The wireless distance detection system according to claim 1, comprising: The portable terminal includes an acceleration sensor;
2. The wireless distance detection system according to claim 1, wherein when the movement of the portable terminal is detected by the acceleration sensor, the inquiry interval in the wireless detection means is shortened. Provide an alarm output means for outputting an alarm also to the detection target,
The wireless distance detection system according to any one of claims 1 to 3, wherein an alarm is output from both the portable terminal and a detection target when the distance for outputting the alarm is reached. Provide an alarm output means for outputting an alarm also to the detection target,
The wireless distance detection system according to any one of claims 1 to 3, wherein an interval of the inquiry is monitored and an alarm is output from the alarm output means when no inquiry is made within a predetermined time. .   It is used in the wireless distance detection system according to any one of claims 1 to 5, comprising the short-range communication means, the wireless distance detection means, and the alarm output means, and in the plurality of operation modes. A portable terminal that performs a detection operation of a detection target.   A wireless distance detection program which is executed by the portable terminal according to claim 6 and functions as the wireless distance detection means and performs detection operation of a detection target in the plurality of operation modes.   A wireless tag used in the wireless distance detection system according to claim 1, wherein a response signal is output in response to an inquiry from the short-range communication means.   5. A wireless tag used in the wireless distance detection system according to claim 4, wherein a response signal is output in response to an inquiry from the short-range communication means, and the alarm output means is provided.   6. The wireless distance detection system according to claim 5, wherein a response signal is output in response to the inquiry from the short-range communication means, and the inquiry interval is monitored, and when there is no inquiry within a predetermined time, A wireless tag, wherein an alarm is output from an alarm output means. The short-range communication means of the mobile terminal and at least one wireless tag attached to the detection target can wirelessly communicate,
In the plurality of operation modes in which at least one of the inquiry interval or the detection distance between the portable terminal and the wireless tag is different, the short-range communication means makes an inquiry to the wireless tag and measures the distance to the wireless tag. A wireless distance measuring switch which operates based on the measurement result.

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