JP2002109669A - Wireless detector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To continue detection, even in the deviation from the detecting state by the transmission and receipt of a recognition code in a near transmit/receive part 6, in the detection of an object to be detected by a wireless detector. SOLUTION: A recognition code generation part 4 generates a transmission recognition code, according to the object to be detected. When the near transmit/ receive part 6 receives a response recognition code from the object to be detected, after transmitting the transmission recognition code, the presence of the object to be detected in a near distance is determined and reported by a report part 1. When the response recognition code cannot be received and a long-distance transmit/receive part 7 receives the response recognition code, after transmitting the transmission recognition code, the presence of the object to be detected in the communication area of the long-distance transmit/receive part 7 is determined and reported by the report part 11. This device is constitute, so that voice information or data can be transmitted and received, in addition to the recognition code in the far transmit/receive part 7, whereby the delivery of a movement instruction is performed with the object to be detected by the transmission and receiving of voice information or the data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a wireless detection device capable of recognizing the presence of a transmitter for transmitting a specific recognition signal within a reception range of a receiver using wireless communication. .

[0002]

2. Description of the Related Art Conventional wireless detection devices are disclosed, for example, in JP-A-3-171400 (hereinafter referred to as a first conventional example) and JP-A-5-143870 (hereinafter referred to as a second conventional example). The ones described are known.

[0003] The first conventional example has a transmitter for wirelessly transmitting a preset code signal on a radio wave, and a receiver for receiving the radio wave of the code signal. A control unit that determines whether the level is higher or lower than a preset level, a warning unit that warns that the transmitter is more than a predetermined distance away or approached, and that the transmitter is more than a predetermined distance. Switching means for switching so as to operate when separated and approached, wherein the control unit identifies when the transmitter is separated by a predetermined distance or more and approached at a reception level according to the setting of the switching means at its reception level, A wireless search device that operates the warning means is described.

In the second conventional example, a transmitter is provided with a transmitting means for radiating the transmission recognition code stored in the transmission recognition code storage means as radio waves, and the receiver has a self-recognition code stored in the self-recognition code storage means. There is described a wireless detection device provided with a notification unit that operates when a radio wave having a transmission recognition code that matches a recognition code appears and disappears in a reception area.

[0005]

However, in the first and second prior arts described above, the receiver and the receiver can transmit and receive radio waves that can be identified using one type of transmitter and receiver. The communication partner is recognized based on whether or not an identifiable radio wave is present in the reception area. For example, when monitoring to prevent a child from getting lost, a wireless detection device is required for both the parent and the child. Can be confirmed to be within the monitoring target area while receiving the transmission radio wave from the wireless detection device carried by the child, but when the child moves out of the monitoring target area, If the radio wave transmitted from the wireless detection device carried by the child cannot be received, the child can no longer be detected. It is inevitable to set a sufficient distance to overlook, in the case action range of children is wide there is an unsolved problem that it can not be applied.

[0006] Therefore, the present invention focuses on the unsolved problem of the conventional example, and has as its object to provide a wireless detection device that can set a monitoring target area to a wide range.

Another object of the present invention is to provide a wireless detection device which is capable of transmitting information between wireless detection devices even if the area to be monitored is large, by configuring the wireless detection devices to transmit information. I have.

[0008]

According to a first aspect of the present invention, there is provided a wireless detection apparatus, comprising: a transmission recognition code storing means for storing a transmission recognition code set in advance for a detection target; A transmitter including a plurality of wireless transmission units having different reachable distances for transmitting the transmission recognition code read from the transmission recognition code storage unit, and individually receiving transmission signals from the plurality of transmission units of the transmitter A plurality of wireless receiving means, a predetermined recognition code storage means for storing a predetermined recognition code corresponding to the transmission code, a predetermined recognition code read from the predetermined recognition code storage means, the short distance receiving means and the long distance receiving means A recognition code judging means for judging whether or not the reception recognition code received in step 1 is coincident, and when the judgment result of the recognition code judgment means shows that the predetermined recognition code and the reception recognition code match. It is characterized by comprising an informing means for informing that it is a detection state.

According to the first aspect of the present invention, since the transmitter and the receiver have a plurality of wireless transmitting means and wireless receiving means having different reach distances, when monitoring a lost child or the like,
When the monitoring target is nearby, the notification unit can recognize the presence of the monitoring target by receiving the transmission recognition code transmitted by the short distance transmitting unit by the short distance receiving unit.
From this state, when the monitoring target is in a state where the transmission recognition code cannot be received by the short distance receiving means, the transmission recognition code transmitted by the long distance transmitting means is received by the long distance receiving means,
The presence of the monitoring target can be recognized by the notification means. At this time, the notification means adopts different notification methods that can be distinguished by the reception of the transmission recognition code by the short-distance reception means and the reception of the transmission recognition code by the long-distance reception means, so that the current distance of the monitoring target is obtained. Can be identified. Further, by providing three or more wireless transmission units and wireless reception units having different reach distances, more detailed distance recognition can be performed.

[0010] In the wireless detection device according to a second aspect, in the invention according to the first aspect, the wireless transmission unit is capable of short-distance transmission with low power consumption and is capable of transmitting at a long distance from the short-distance transmission unit. At least a long-distance transmitting unit, the wireless receiving unit comprising: a low-power short-distance receiving unit that receives a transmission signal of the short-distance transmitting unit; and a long-distance receiving unit that receives a transmission signal of the long-distance transmitting unit. Receiving means, always transmit and receive between the short-distance transmitting means and the short-distance receiving means, and when the transmission and reception between both become impossible, between the long-distance transmitting means and the long-distance receiving means. It is characterized by transmitting and receiving.

According to the second aspect of the present invention, the wireless transmitting means and the wireless receiving means each include a short-distance transmitting means and a short-distance receiving means which consume less power, and a long-distance transmitting means and a long-distance receiving means. Transmission and reception between the short-distance transmission means and the short-distance reception means, to suppress power consumption, long-distance transmission means only when transmission and reception between the short-distance transmission means and the short-distance reception means become impossible By switching to the long-distance receiving means, it is possible to detect the other party to be monitored.

Further, the wireless detection device according to a third aspect of the present invention is the wireless detection device according to the first or second aspect of the invention, further comprising: a power supply remaining capacity detecting means for detecting a remaining capacity of the built-in power supply; Power remaining capacity determining means for determining whether or not the remaining power of the power supply is equal to or greater than a predetermined capacity necessary for driving the long distance transmitting means and the long distance receiving means; A warning means for warning that only the short-distance transmitting means and the short-distance receiving means are in a driving state when is less than a predetermined capacity.

According to the third aspect of the present invention, when the remaining capacity of the internal power supply detected by the battery remaining capacity detecting means is large, both the short distance transmitting means, the short distance receiving means, the long distance transmitting means, and the long distance receiving means are operated. Although it can be used, when the remaining capacity of the built-in power supply becomes small and the long-distance transmitting means and the long-distance receiving means cannot be driven, a warning is given by the warning means.

According to a fourth aspect of the present invention, there is provided a wireless detection apparatus according to any one of the first to third aspects, wherein the position information measuring means for measuring own position information, and the position measured by the position information measuring means. It is characterized by having position information transmitting means for transmitting information to a communication partner and relative distance calculating means for calculating a relative distance based on its own position information and the position information of the communication partner.

In the invention according to the fourth aspect, the relative distance is calculated by the relative distance calculation means based on the position information of the communication device and the position information of the communication partner, so that the accurate position of the detection target can be grasped. it can.

Further, according to a fifth aspect of the present invention, in the wireless detection apparatus according to any one of the first to fourth aspects, the wireless transmitting means and the wireless receiving means are such that at least the long-distance transmitting means and the long-distance receiving means have voice. It is characterized by being capable of transmitting and receiving information.

According to the fifth aspect of the present invention, at least the long-distance transmitting means and the long-distance receiving means of the wireless transmitting means and the wireless receiving means can transmit and receive the audio information. Can be exchanged, and instructions can be exchanged with the other party.

According to a sixth aspect of the present invention, in the wireless detection device, the wireless transmitting means and the wireless receiving means are configured so that at least the long-distance transmitting means and the long-distance receiving means can transmit and receive data information. And

According to the sixth aspect of the present invention, at least the long-distance transmitting means and the long-distance receiving means of the wireless transmitting means and the wireless receiving means can transmit and receive data information. , Etc., and can exchange instructions with the other party.

Further, according to a seventh aspect of the present invention, in the wireless detection device according to any one of the first to sixth aspects, the wireless transmitting means is configured to encrypt and transmit a transmission signal, and the wireless receiving means Is characterized in that it is configured to decode a received signal.

In the invention according to the seventh aspect, the transmission signal is encrypted by the wireless transmission means and transmitted, and the transmission signal is decrypted by the wireless reception means. Can be reliably prevented.

[0022]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a first embodiment of the present invention. In the figure, reference numeral 1 denotes a wireless detection device, and a detection target partner setting unit 2 for setting a detection target partner;
A detection target partner storage unit 3 that stores the detection target partner set by the detection target partner setting unit 2, and a recognition code generation unit that generates a recognition code corresponding to the detection target partner stored in the detection target partner storage unit 3. 4, a transmission recognition code storage unit 5 for storing the recognition code generated by the recognition code generation unit 4, and a low power consumption 2 that can transmit and receive the transmission recognition code over a relatively short distance of about several tens of meters. A short-range transmitting / receiving unit 6 employing Bluetooth or the like using a 4 GHz band ISM band, and a CD capable of transmitting and receiving a transmission recognition code over a long distance, for example, a CD
The long-distance transmission / reception unit 7 employing the MA1 system or the like, and the recognition code generated by the transmission code generation unit 4 are first selected and supplied to the short-distance transmission / reception unit 6, and a reception status determination unit 9 described later.
, A transmission / reception selection unit 8 that selects the long-distance transmission / reception unit 7 and supplies a transmission recognition code when a discrimination signal indicating that there is no reception of a response signal from the short-range transmission / reception unit 6 And the selection signal from the transmission / reception selection unit 8 is input. Based on the selection signal, the corresponding reception states of the two are determined, and the short-range transmission / reception unit 6 recognizes the response recognition code for the transmission recognition code. When no is received, a determination signal is supplied to the transmission / reception selection unit 8, a reception status determination unit 9 that outputs the received response recognition code, and a response recognition code output from the reception status determination unit 9 are input. The reception recognition code discriminating unit 1 which receives the transmission recognition code generated by the recognition code generation unit 4, determines the coincidence of the two, and outputs a coincidence discrimination signal when the two match.
0, based on the coincidence determination signal output from the reception recognition code determination unit 10 and the determination signal from the reception status determination unit 9, whether the detection target is at a short distance, at a long distance, or further, is detected. And a notifying unit 11 for notifying whether it is in the disabled state.

When the received reception code does not match the transmission recognition code generated by the recognition code generation unit 4, the reception recognition code determination unit 10 determines whether the reception recognition code matches its own recognition code. Is determined, and when the identification code matches the identification code of itself, it is determined that the identification code is a confirmation code from the detection target partner, and the reception identification code is supplied to the transmission / reception selecting unit 8 as it is. In the transmission / reception selecting unit 8, the short-range transmitting / receiving unit 6 or the long-range transmitting / receiving unit 7 based on the determination signal of the reception status determining unit 9.
Is supplied as a response signal.

Further, the notifying unit 11 has a microphone and a speaker, has a voice codec circuit, and switches the detection switch from the detection process to the voice communication process by turning on a changeover switch, thereby using the long-distance transmitting / receiving unit 7. The transmission recognition code is used to link with the other party to be detected so that voice information can be exchanged.

The transmission control process and the reception control process of the wireless detection device 1 will be described with reference to FIGS.

In the transmission control process, as shown in FIG. 2, first, in step S1, it is determined whether or not a detection target is set. If no detection target is set, the detection target is set. When the detection target partner is set, the process proceeds to step S2 to generate a recognition code of the detection target partner as a transmission recognition code, and then proceeds to step S3 to activate the short distance transmission unit 6. After the state, the transmission recognition code is supplied to the short-distance transmission unit 6,
After transmitting the transmission recognition code, the process proceeds to step S4.

In step S4, it is determined whether or not the response recognition code from the detection target partner has been received by the short-range wireless receiving unit 6 within a predetermined time. This determination is made by determining whether or not a short distance transmission / reception unit 6 has received a reception recognition code that matches the transmission recognition code transmitted by itself in a reception control process described later within a predetermined time. Is received, the process proceeds to step S5, a notification signal indicating that the detection target is in a short distance is output to the notification unit 11, and the notification is performed by sound or display, and then the process proceeds to step S6 to perform the detection. It is determined whether or not to end the processing. If the detection processing is to be ended, the processing is terminated as it is, and if the detection processing is to be continued, the process returns to step S1.

On the other hand, if the result of the determination in step S4 is that the response recognition code cannot be received, the process proceeds to step S7, in which the long-distance transmitting / receiving section 7 is set to the operating state,
The transmission recognition code generated in step 2 is input to and transmitted to the long-distance transmission / reception unit 7, and then the process proceeds to step S8 to determine whether the long-distance transmission / reception unit 7 has received the response recognition code. This determination is also made by determining whether or not a long distance transmission / reception unit 7 has received a reception recognition code that matches the transmission recognition code transmitted by itself in a reception control process described later within a predetermined time. When the information is received, the process proceeds to step S9, in which a notification signal indicating that the detection target partner is at a long distance is output to the notification unit 11, and the notification unit 11 notifies the notification using a sound or display different from that at the time of the short distance detection. From step S6
Move to

If the result of the determination in step S8 is that the response recognition code has not been received, the flow shifts to step S10 to determine whether the power source of the wireless detection device 1 to be detected is off or Is in a state in which the radio wave transmitted by the long-distance transmission / reception unit 7 cannot be received, and it is determined that the detection target partner cannot be detected. After notifying by a sound or display, the process proceeds to step S6.

In the reception control process, as shown in FIG. 3, first, the short-range transmission / reception unit 6 is activated in step S21, and then the process proceeds to step S22 to use the short-range transmission / reception unit in the transmission control process. A margin is added to the cycle of transmitting the transmission recognition code, and a timer set at a fixed time set is set. Then, the process proceeds to step S23 to determine whether or not the timer has expired. If the time has not elapsed, the process moves to step S24.

In step S24, it is determined whether or not a recognition code matching the transmission recognition code transmitted in the transmission control process has been received. When it is determined that the response recognition code has been received, the process proceeds to step S25, and the reception of the response recognition code is notified to the transmission control process, and then the process proceeds to step S26,
It is determined whether or not the detection process is to be terminated. If the detection process is to be terminated, the process is terminated as it is. To continue the detection process, the process returns to step S22.

If the result of the determination in step S24 is that a recognition code matching the transmission recognition code has not been received, the flow shifts to step S27 to determine whether a recognition code matching the own recognition code has been received. It returns to step S23 when an identification code matching the own identification code has not been received, and proceeds to step S28 when an identification code matching the own identification code has been received. After resetting the flag F1 to “0” indicating that the short-range transmission / reception unit 6 has received the flag F1, step S29 is performed.
Then, the process proceeds to step S26 after activating the response recognition code transmission process.

On the other hand, if the result of the determination in step S23 is that the timer has timed out, step S23 is executed.
30, the short-distance transmission / reception section 6 is deactivated, and the long-distance transmission / reception section 7 is activated instead. Then, the operation proceeds to step S31, where the long-distance transmission / reception section is used in the transmission control processing. A margin is added to the period for transmitting the transmission recognition code, and a timer is set at a fixed time which is set. Then, the process proceeds to step S32 to determine whether or not the timer has expired. If not, the process proceeds to step S33.

In step S33, it is determined whether or not a recognition code matching the transmission recognition code transmitted in the transmission control process is received. When the recognition code matching the transmission recognition code is received, the response recognition code is changed. When it is determined that the response recognition code has been received, the process proceeds to step S34, and the reception of the response recognition code is notified to the transmission control process, and then the process proceeds to step S35,
It is determined whether or not the detection process is to be terminated. If the detection process is to be terminated, the process is terminated. If the detection process is to be continued, the process proceeds to step S36 to deactivate the long distance transmission / reception unit 7. After the state, the process returns to step S21.

If the result of the determination in step S33 is that a recognition code matching the transmission recognition code has not been received, the flow shifts to step S37 to determine whether a recognition code matching the own recognition code has been received. It returns to the step S32 when the recognition code matching the own recognition code is not received, and shifts to the step S38 when the recognition code matching the own recognition code is received. The flag F1 is set to "1" indicating that the signal has been received by the long-distance transmission / reception unit 7, and the flow shifts to step S39. After the response recognition code transmission process is started, the flow shifts to step S35.

If the result of the determination in step S32 is that the timer has timed out, the process proceeds to step S40.
Then, the notifying unit 11 notifies by sound or display that the detection target partner is in the undetectable state, and then returns to the step S
Move to 36.

In the response recognition code transmission process, as shown in FIG. 4, first, in step S41, it is determined whether or not the receiving section determination flag F1 has been reset to "0", and this is reset to "0". If so, the process proceeds to step S42, in which the short-range transmitting / receiving section 6 is operated, and its own recognition code is supplied thereto as a response recognition code.
After transmitting the response recognition code for a short distance, the process proceeds to step S43, in which the short-range wireless transmission / reception unit 6 is deactivated to terminate the process. If the reception unit determination flag F1 is set to "1", the process proceeds to step S43. Proceeding to S44, the long distance transmission / reception unit 7 is operated to supply its own recognition code as a response recognition code, thereby transmitting the response recognition code over a long distance, and then proceeding to step S45. The process ends after the transmitting / receiving unit 7 is set in the inactive state.

Further, the wireless detection device 1 executes a built-in power supply monitoring process shown in FIG. This built-in power supply monitoring process is executed as a timer interrupt process every predetermined time (for example, one minute). First, in step S51, the remaining capacity, for example, the voltage of the built-in power source such as a built-in dry battery or a secondary battery is detected. Next, the process proceeds to step S52 to determine whether or not the remaining capacity is set in advance and is equal to or less than a set value obtained by adding a margin to the minimum remaining capacity required to operate the long-distance transmitting / receiving unit 7, When the remaining capacity is equal to or more than the set value, the timer interrupt processing is terminated as it is, and the process returns to another processing. When the remaining capacity is equal to or less than the set position, the process proceeds to step S53. After warning by sound or display that the possibility that the operation of the distance transmitting / receiving unit 7 is likely to stop is high, the timer interrupt process is terminated and the process returns to another process.

Next, the operation of the above embodiment will be described.

Now, assuming that the parent and child carry the wireless detection devices 1 and go to places where congestion is expected, such as an amusement park or a department store, when they arrive at the congested place, each other's wireless detection devices 1 are assumed. Is turned on to activate the wireless detection device 1 carried by the parent, and the name of the child registered in advance is set for the wireless detection device 1 carried by the parent. An individual recognition code B set to 1 is generated. Also, by setting the parent name registered in advance for the wireless detection device 1 carried by the child,
The wireless detection device 1 carried by the parent in the recognition code generation unit 4
Is generated.

When the transmission control process is started in, for example, the wireless detection device 1 carried by the parent, a recognition code B set in the wireless detection device 1 carried by the child is generated, and the recognition code B is generated. The code B is supplied to the short-range transmission / reception unit 6, and the recognition code B is transmitted from the short-range transmission / reception unit 6.

On the other hand, the wireless detection device 1 carried by the child
In this case, the reception processing is always executed, so that the short-range transmission / reception unit 6 is activated (step S21), a timer is set, and the distance between the parent and the wireless detection device 1 carried by the parent is short. Before the time-up, the short-range transmission / reception unit 6 receives the recognition code B. Since the recognition code B is different from the transmission recognition code A transmitted by itself, the process proceeds from step S24 to step S27, and Since they match, the process shifts to step S28 to reset the receiving unit determination flag F1 to "0", and then starts the response recognition code transmission process (step S29).

For this reason, in the response recognition code transmission processing of FIG. 4, the receiving section determination flag F1 has been reset to "0" in step S41, so that the short-range transmitting / receiving section 6 is operated and the parent carries the wireless communication. The self-recognition code B that matches the transmission recognition code B transmitted from the detection device 1 is transmitted by the short-range transmission / reception unit 6 as a response recognition code.

Therefore, the wireless detection device 1 carried by the parent receives the response recognition code B that matches the transmission recognition code B in the reception process, and the process shifts from step S24 to step S25 to start the transmission control process. Notify that the response recognition code B has been received. As a result, the transmission control process determines that the response recognition code B has been received by the short-range transmission / reception unit 6 within a predetermined period, thereby indicating to the notification unit 11 that the child to be detected is at the short-range position. By notifying the sound or the display, the parent can recognize that the child is at a short distance.

Similarly, when transmission control processing is performed in the wireless detection device 1 carried by the child, a recognition code A set in the wireless detection device 1 carried by the parent is generated as a transmission code, and this is used as a nearby code. When the transmission identification code A is received by the wireless detection device 1 carried by the parent at a short distance by being transmitted from the distance transmission / reception unit 6, the identification code A of itself is transmitted as a response identification code, and this is transmitted to the child. The reception or reception by the short-range transmission / reception unit 6 of the wireless detection device 1 carried by the user notifies the notification unit 11 of a sound or display indicating that the parent is at a short distance.

While the parent and child continue to be in a short distance of about a dozen meters, the same transmission / reception processing as described above is repeated.
Notification indicating that the detection target partner is in a short distance is performed by the mutual wireless transmission devices 1.

In this state, when one or both of the parent and child move, the wireless detection device 1 carried by each other is moved.
When the short distance transmission / reception unit cannot receive the recognition code, the wireless detection device 1 carried by the parent, for example,
When the transmission code B is transmitted by the short-range transmission / reception unit 6, the short-range transmission / reception unit 6 in the wireless detection device 1 carried by the child sets a timer in which the transmission recognition code is set. The response recognition code cannot be transmitted before the time is up, and the response recognition code transmission process is not started. Therefore, the response recognition code is not transmitted.

As a result, the wireless detection device 1 carried by the parent cannot receive the response recognition code for a certain period of time, so that the long distance transmission / reception unit 7 is set in the operating state and the transmission recognition code B is transmitted again. On the other hand, in the wireless detection device 1 carried by the child, since the timer has expired, the process proceeds from step S23 to step S30, and the long-distance transmission / reception unit 7 instead of the short-distance transmission / reception unit 6 is activated and , The timer is set, the transmission recognition code B from the wireless detection device 1 carried by the parent can be received by the long-distance transmission / reception unit 7, and the process proceeds from step S33 to step S38 via step S37, The receiving unit discrimination flag F1 is set to "1", and the response recognition code transmission process is started (step S39).

In this response recognition code transmission process, the reception section discrimination flag F1 is set to "1", so that the long distance transmission / reception section 7 is activated in step S44, and the own recognition code is added to the response recognition code. By supplying as
After transmitting the response recognition code over a long distance, the process proceeds to step S45, and the process is terminated after the long-distance transmitting / receiving unit 7 is deactivated.

As a result, even in the reception processing in the wireless detection device 1 carried by the parent, the timer expires and the long-distance transmission / reception unit 7 is activated, and the response recognition code transmitted from the wireless detection device 1 carried by the child. Since B is received, the process shifts from step S33 to step S34 to notify the transmission control process that the response recognition code has been received. For this reason, in the transmission control process, the notification unit 11 is notified by a sound or a display indicating that the child to be detected has moved to a communicable distance by the long distance transmission / reception unit 7.

For this reason, since voice information can be transmitted and received by the long-distance transmission / reception unit 7, the notification unit 11 turns on the changeover switch to establish communication connection with the wireless detection device 1 carried by the child. In this state, by transmitting and receiving audio information by a microphone and a speaker, the parent instructs the child to confirm the current position, return to the parent's current position, or instruct the child to stay at the current position until the parent goes. can do.

Thereafter, when the two are moved from a state where they are apart from each other by several tens of meters or more in a direction in which the distance between the two becomes shorter, and a state in which the recognition code can be transmitted / received again by the short-range transmitting / receiving unit 6, as described above. In addition, the notification unit 11 can notify by sound or display that the detection target partner is located at a short distance of more than ten meters.

On the other hand, in the built-in battery monitoring process, when the remaining capacity of the built-in power supply such as a built-in dry battery or a secondary battery falls below a predetermined remaining capacity sufficient to operate the long-distance transmission / reception unit 7, the notification unit 11 outputs. By issuing an alarm indicating that the long-distance transmission / reception unit 7 cannot be operated, the long-distance transmission / reception unit 7 is disabled.
Before the operation becomes impossible, it is possible to transmit and receive voice information using the long-distance transmission / reception unit 7 and to instruct each other to move within the transmission / reception range of the short-distance transmission / reception unit 6.
When the recognition code is transmitted and received by the long-distance transmission / reception unit 7, the remaining capacity of the built-in power supply decreases, and the long-distance transmission / reception unit 7
Is inoperable, it is possible to reliably prevent the communication from being disabled.

In addition, not only in the case of detection so as not to be lost, when a meeting is made, the state of transmission / reception of the recognition code in the long-distance transmission / reception section 7 is changed to the state of transmission / reception of the recognition code in the short-range transmission / reception section 6. Thus, the approach of the meeting partner can be detected.

Further, the present invention is not limited to the case where the number of detection targets is set to one, but a plurality of detection target names are set, a plurality of different transmission recognition codes are generated, and the transmission control process is repeated to obtain a plurality of detection targets. Can be detected by one wireless detection device 1.

As described above, according to the first embodiment, the wireless detection device 1 includes the short-range transmission / reception unit 6 and the long-range transmission / reception unit 7, and always uses the short-range transmission / reception unit 6 with low power consumption. When the recognition code is transmitted and received to and from the detection target, the power consumption of the built-in power supply is suppressed. By transmitting and receiving the recognition code by the distance transmitting / receiving unit 7, the detection target partner is more than
Even if the user moves out of the short-range detection range, the long-range transmission / reception unit 7 can detect the target, and it is possible to reliably prevent the target to be detected from being lost.

Further, since the long-distance transmitting / receiving unit 7 is configured to be capable of transmitting voice information, the notifying unit 11
Using a microphone and a speaker, voice information can be transmitted and received to and from the detection target partner. The user can use voice to instruct the user to move to the current position, or stop at the current position and wait for the partner to approach. , An instruction of a meeting place, and the like.

Further, the remaining capacity of the built-in power supply is monitored, and a warning is issued before the long-distance transmission / reception section 7 becomes inoperable, and the short-distance transmission / reception section 6 recognizes when the detection target is at a long distance. It is possible to instruct movement to a range in which the code can be transmitted and received, and it is possible to avoid in advance that the operation of the long-distance transmitting / receiving unit 7 stops and the detection target partner cannot be detected.

In the first embodiment, a case has been described in which a voice codec circuit is provided in the notification unit 11 so that transmission / reception of voice information can be performed using the long-distance transmission / reception unit 7. However, the present invention is not limited to this. By providing a data codec circuit and providing a display unit such as an input key and a liquid crystal display unit,
Character data may be exchanged.

Next, a second embodiment of the present invention will be described with reference to FIGS.

In the second embodiment, the function of measuring the current position of the user is added, and the distance and the direction between the current position and the current position of the detection target can be calculated from the current position of the user and the current position of the detection target partner. It is.

That is, in the second embodiment, as shown in FIG. 6, in the configuration of FIG. 1 in the first embodiment described above, global positioning for receiving a radio wave from a geostationary satellite and measuring the current position is performed. A current position measuring unit 12 such as a system (GPS) is provided, and current position data measured by the current position measuring unit 12 is supplied to the transmission recognition code storage unit 5 and to the reception recognition code determination unit 10. Except for this, it has the same configuration as that of FIG. 1, and the same reference numerals are given to portions corresponding to FIG. 1, and a detailed description thereof will be omitted. Here, the transmission recognition code storage unit 5 forms a predetermined communication frame with the transmission recognition code generated by the recognition code generation unit 4 and the current position data measured by the current position measurement unit 12, and stores the communication frame. The reception recognition code determination unit 10 is configured to calculate the distance and direction between the current position data of the detection target partner included in the received communication frame and the current position data of the own device, based on the current position data. The notified distance and direction are output to the notification unit 11.

In the transmission control process, as shown in FIG. 7, in the process of FIG. 2 in the first embodiment described above, the transmission is performed from the detection target partner between steps S5 and S9 and step S6. Based on the current position data and its own current position data, a distance between the two is calculated, and a direction is calculated in step S12, and the calculated distance and direction are displayed on a display such as a liquid crystal display in step S1.
2 except that 3 is interposed. The same steps as those in FIG. 2 are denoted by the same step numbers, and detailed description thereof is omitted.

Further, in the response recognition code transmission process, the process shown in FIG.
As shown in FIG. 4, in the process of FIG. 4 in the first embodiment described above, the processes of steps S42 and S44 form a communication frame by adding its own current position data to the response recognition code, and The same processing as in FIG. 4 is performed except that the transmission is performed by the distance transmitting / receiving section 6 and the long-distance transmitting / receiving section 7, and the processing corresponding to FIG. Description is omitted.

According to the second embodiment, similarly to the first embodiment described above, it is possible to detect whether the detection target is at a short distance or a long distance, and to determine the current position information. Is provided, the current position data measured by the current position information measuring unit 12 is added when a response recognition code is transmitted from the wireless detection device 1 carried by the detection target partner. The wireless detection device 1 performing the transmission control process calculates the distance and direction between itself and the detection target partner based on the current position data of the wireless detection device 1 and the current position data of the detection target partner. By displaying the calculated distance and direction on the display device, the position of the detection target partner can be accurately grasped.

In the first and second embodiments, a case has been described in which the wireless detection device 1 is provided with two transmission / reception units, that is, the short-range transmission / reception unit 6 and the long-range transmission / reception unit 7. However, the present invention is not limited to this. Instead, a plurality of transmission / reception units having different communication areas may be provided to more finely detect the position of the detection target partner.

In the first and second embodiments, the case where the transmission recognition code and the response recognition code are transmitted as they are has been described. However, the present invention is not limited to this. When transmitting other voice information, data information, etc., it may be encrypted and transmitted, and the receiving side may decrypt the information. In this case, it is ensured that an unexpected partner can know its own position. Can be prevented.

Further, in the first and second embodiments, the case where the long-distance transmitting / receiving section 7 is configured to be able to transmit and receive voice information or data has been described. However, the present invention is not limited to this. The transmission / reception unit 6 can also be configured to be able to transmit voice information or data.

Further, in the first and second embodiments, the case where the short-range transmitting / receiving unit 6 and the long-range transmitting / receiving unit 7 have both the transmitting function and the receiving function has been described.
However, the present invention is not limited to this, and each of them may be provided with a separate transmitting unit and receiving unit.

[0071]

As described above, according to the first aspect of the present invention, since a transmitter and a receiver have a plurality of radio transmission means and radio reception means having different reach distances, a stray child or the like is monitored. In this case, when the monitoring target is nearby, the presence of the monitoring target can be recognized by the notification unit by receiving the transmission recognition code transmitted by the short-range transmission unit by the short-range reception unit. When the monitoring target cannot receive the transmission recognition code by the short-distance receiving means, the transmission recognition code transmitted by the long-distance transmitting means is received by the long-distance receiving means so that the notification means always recognizes the presence of the monitoring target. This makes it possible to obtain the effect of reliably detecting without losing the other party to be detected.

Moreover, the notification means employs different notification methods that can be distinguished between the reception of the transmission recognition code by the short-distance receiving means and the reception of the transmission recognition code by the long-distance receiving means, whereby the monitoring target can be identified. The present distance can be identified, and furthermore, by providing three or more wireless transmission means and wireless reception means having different reachable distances, an effect is obtained that more detailed distance recognition can be performed.

According to the second aspect of the present invention, the wireless transmitting means and the wireless receiving means each include a short-distance transmitting means and a short-distance receiving means which consume less power, and a long-distance transmitting means and a long-distance receiving means. Usually, transmission and reception are performed between the short-distance transmission means and the short-distance reception means to reduce power consumption, and the long-distance transmission is performed only when transmission and reception between the short-distance transmission means and the short-distance reception means become impossible. By switching to the transmitting means and the long-distance receiving means, it is possible to obtain the effect of enabling detection of the other party to be monitored.

Further, according to the third aspect of the invention, when the remaining capacity of the built-in power supply detected by the battery remaining capacity detecting means is large, the short-distance transmitting means, the short-distance receiving means and the long-distance transmitting means, the long-distance receiving means Both can be used, but before the remaining capacity of the built-in power supply is reduced and the long-distance transmitting means and the long-distance receiving means cannot be driven, a warning means can warn that, The effect of being able to perform in advance the avoidance measure for the undetectable state due to the inability of the long-distance transmitting means and the long-distance receiving means to be driven can be obtained.

According to the fourth aspect of the present invention, the relative distance is calculated by the relative distance calculating means based on the position information of the communication device and the position information of the communication partner. The effect of being able to grasp is obtained.

According to the fifth aspect of the present invention, at least the long-distance transmission means and the long-distance reception means of the radio transmission means and the radio reception means can transmit and receive the voice information. It is possible to transmit and receive voice information between them, and it is possible to obtain an effect that it is possible to exchange instructions with the other party.

According to the sixth aspect of the present invention, at least the long-distance transmitting means and the long-distance receiving means of the wireless transmitting means and the wireless receiving means can transmit and receive data information. Can transmit and receive instruction data such as character information, and the effect of exchanging instructions with the other party can be obtained.

Further, according to the seventh aspect of the present invention, the transmission signal is encrypted by the wireless transmission means and transmitted, and the transmission signal is decrypted by the wireless reception means. An effect is obtained in that it is possible to reliably prevent the user from being known or hindering the detection.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a flowchart illustrating an example of a transmission control processing procedure according to the first embodiment.

FIG. 3 is a flowchart illustrating an example of a reception processing procedure according to the first embodiment.

FIG. 4 is a flowchart illustrating an example of a response recognition code transmission processing procedure according to the first embodiment.

FIG. 5 is a flowchart illustrating an example of a built-in power supply monitoring processing procedure according to the first embodiment.

FIG. 6 is a block diagram showing a second embodiment of the present invention.

FIG. 7 is a flowchart illustrating an example of a transmission control processing procedure according to the second embodiment.

FIG. 8 is a flowchart illustrating an example of a response recognition code transmission processing procedure according to the second embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 wireless detection device 2 detection target partner setting unit 3 detection target partner storage unit 4 recognition code generation unit 5 transmission recognition code storage unit 6 short-range transmission / reception unit 7 long-distance transmission / reception unit 8 transmission / reception selection unit 9 reception status determination unit 10 reception recognition code Discrimination unit 11 Notification unit 12 Current position measurement unit

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5C086 AA21 AA52 BA30 CA06 CA25 CB27 CB37 DA14 DA40 EA41 EA45 FA02 FA18 5C087 AA02 AA25 AA32 BB18 BB72 DD03 EE14 EE18 FF01 FF02 FF13 FF17 GG1 1 GA03 HA06 LA01 5K060 CC04 DD01 DD04 NN03

Claims (7)

[Claims] 1. A transmission recognition code storage means for storing a transmission recognition code preset for a detection target, and a plurality of different reachable distances for transmitting the transmission recognition code read from the transmission recognition code storage means. A transmitter including a wireless transmitter, a plurality of wireless receivers for individually receiving transmission signals from the plurality of transmitters of the transmitter, and a predetermined identification code storing a predetermined identification code corresponding to the transmission code Storage means;
A recognition code determining unit that determines whether the predetermined recognition code read from the predetermined recognition code storage unit matches the reception recognition code received by the short-distance receiving unit and the long-distance receiving unit; A wireless detection device, comprising: notification means for notifying that the apparatus is in a detection state when the result of determination by the determination means is that the predetermined recognition code and the reception recognition code match. 2. The wireless transmission unit includes at least a short-distance transmission unit that consumes less power and a long-distance transmission unit that can perform a long-distance transmission from the short-distance transmission unit. A short-distance receiving unit that receives the transmission signal of the distance transmitting unit and has a low power consumption; and a long-distance receiving unit that receives the transmission signal of the long-distance transmitting unit. To send and receive,
2. The wireless detection device according to claim 1, wherein transmission and reception are performed between the long-distance transmission means and the long-distance reception means when transmission and reception between the two become impossible. 3. A power supply remaining capacity detecting means for detecting a remaining capacity of a built-in power supply, and a remaining capacity of the built-in power detected by the power remaining capacity detecting means is a predetermined value required for driving a long-distance transmitting means and a long-distance receiving means. Power remaining capacity determining means for determining whether or not the remaining capacity is equal to or more than a capacity, and when the determination result of the power remaining capacity determining means indicates that the power remaining capacity is less than a predetermined capacity, only the short distance transmitting means and the short distance receiving means are provided. The wireless detection device according to claim 1, further comprising a warning unit that warns that the vehicle is in the driving state. 4. Position information measuring means for measuring own position information, position information transmitting means for transmitting position information measured by the position information measuring means to a communication partner, self position information and communication partner position information. The wireless detection device according to any one of claims 1 to 3, further comprising: a relative distance calculation unit configured to calculate a relative distance based on the information. 5. The wireless transmitting means and the wireless receiving means,
The wireless detection device according to any one of claims 1 to 4, wherein at least the long-distance transmission unit and the long-distance reception unit are configured to transmit and receive voice information. 6. The wireless transmitting means and the wireless receiving means,
The wireless detection device according to claim 1, wherein at least the long-distance transmission unit and the long-distance reception unit are configured to transmit and receive data information. 7. The wireless transmission unit according to claim 1, wherein the wireless transmission unit is configured to encrypt and transmit a transmission signal, and the wireless reception unit is configured to decrypt a reception signal. 7. The wireless detection device according to any one of 6.