KR200254642Y1 - A portable radio device system for preventing a lost child - Google Patents

Abstract

The present invention relates to a mobile radio system for preventing a lost child. Especially, when a child falls over a certain distance from the guardian, an alarm sounds and the child's living radio is automatically placed under the guardian's control so that the guardian and the child can talk to each other. The present invention relates to a portable radio system for preventing a lost child.

It is an object of the present invention to provide a portable radio system for preventing a lost child that can control a child's home radio with a guardian's home radio so that even a child who can not operate the radio can easily talk to the guardian.

As described above, when the child falls over a certain distance from the guardian, an alarm sounds to prevent the occurrence of missing children, and the guardian can control the children's radio, so even children who do not know how to operate the radio can easily reach the guardian. There is an advantage to talking.

Description

A PORTABLE RADIO DEVICE SYSTEM FOR PREVENTING A LOST CHILD}

The present invention relates to a mobile radio system for preventing a lost child. Especially, when a child falls over a certain distance from the guardian, an alarm sounds and the child's family radio service (FRS) is automatically placed under the guardian's control. The present invention relates to an anti-lost portable radio system for anti-lost that a child and a child can talk to each other.

The walkie-talkie is a radio using a frequency of 448MHz ultra high frequency (UHF) band, it does not need to be licensed or notified, it is a radio that anyone can use freely without paying a radio fee. The modulation method is FM method, the maximum allowable output is 0.5W, the number of channels is 25, the number of tones is 38, and the maximum communication distance is 3Km.

These days, families often take a trip to the park or outdoors on weekends, holidays, and vacations. Therefore, in the place where many people gather, there is a high probability of occurrence of the missing child has been developed a lot of preventive devices to prevent this.

Conventional anti-lost devices passively included anti-loan bracelets and necklaces for writing personal information of children on bracelets or necklaces, anti-loan alarms that sound when children fall over a certain distance.

However, when carrying a child's name, phone number, address, etc. on a bracelet or necklace, the family may have to wait until contact and may easily provide information to the kidnappers.

In addition, an alarm that alarms when the child falls more than a certain distance, the distance is too short in the distance setting, the behavior of the child is constrained, if the distance is too long, the activity radius of the child is difficult to find a missing child.

In addition, if you use a simple radio, the radio is unidirectional, so you need to adjust the tone with the channel and adjust the PPT (Push To Talk) switch to use it. Children of a difficult age to learn how to use.

The present invention was devised to solve the above problems, and the purpose of the present invention is to control children's radios with the guardian's living radio, so that children who do not know how to operate the radio can talk to the guardian easily. It is to provide a portable radio system.

1 is a system configuration diagram for the protector for preventing the lost according to the present invention.

Figure 2 is a diagram illustrating a system for children for preventing the lost according to the present invention.

Figure 3 is a flow chart of the operation of the mobile radio for preventing the lost according to the present invention.

<Explanation of symbols for the main parts of the drawings>

110, 210: switching circuit unit 120, 220: device ID storage unit

130, 230: control signal transmitter 140, 240: control signal receiver

150, 250: device ID detector 190, 290: PTT on / off circuit

In order to achieve the above object, a portable radio system for preventing a lost child according to the present invention includes: a general life radio circuit unit including a push to talk (PTT) switch on / off circuit unit; Anti-lost function; And a switching circuit unit for activating the anti-lost function unit, wherein the anti-loan function unit comprises: a control signal receiving unit receiving a control signal including an ID; A control signal transmitter for transmitting a control signal; A device ID storage unit for storing a unique device ID of the home radio and transmitting the unique device ID to the control signal transmitter; A device ID detector which detects an ID from a control signal received by the control signal receiver and compares the ID with a unique device ID of the device ID storage unit; A propagation standby circuit unit for determining whether the same ID as that of the unique device ID is detected by the device ID detection unit within a predetermined time and outputting the result; An alarm generator for generating an alarm; A specific channel / tone circuit unit configured to set a transmission / reception channel and a tone of the general living radio circuit unit to a specific channel; A PTT on / off signal generator for generating a PTT on / off control signal according to the signal of the PTT on / off circuit and transmitting it to the control signal transmitter; And an emergency mode switching circuit for activating the alarm generation unit, the specific channel / tone circuit unit, and the PTT on / off signal generation unit according to the output of the radio wave standby circuit unit.

The apparatus may further include a radio wave weak detection circuit unit for outputting to the emergency mode switching circuit unit whether the magnitude of the control signal received by the control signal receiving unit is less than or equal to a predetermined value, wherein the emergency mode switching circuit includes the radio wave weak detection circuit unit and the radio wave. It is configured to operate in accordance with the output of the standby circuit portion,

The radio standby circuit section is configured to output a signal instructing transmission of a unique device ID to the device ID storage section every predetermined time.

And, a general life walkie-talkie circuit including a push to talk (PTT) switch on / off circuit; Anti-lost function; And a switching circuit unit for activating the anti-lost function unit, wherein the anti-loan function unit comprises: a control signal receiving unit configured to receive a control signal including an ID and a PTT on / off signal; A control signal transmitter for transmitting a control signal; A device ID storage unit for storing a unique device ID of the home radio and transmitting the unique device ID to the control signal transmitter; A device ID detector which detects an ID from the control signal received by the control signal receiver, compares the ID with the unique device ID of the device ID storage unit, and outputs an output signal instructing to transmit the unique device ID to the device ID storage unit if the ID is the same; A PTT on / off signal detection circuit unit for detecting a PTT on / off signal from the control signal received by the control signal transmitter; A specific channel / tone circuit unit configured to set a transmission / reception channel and a tone of the general living radio circuit unit to a specific channel; And a child emergency mode switching unit for activating the specific channel / tone circuit unit and controlling the PTT on / off circuit unit according to the detection signal of the PTT on / off signal detection circuit unit.

In addition, when the PTT on / off signal detection circuit portion of the children's portable radio detects the PTT on signal, the children's portable radio is PTT off, when detecting the PTT off signal is characterized in that the PTT on,

The use frequencies of the general life radio circuit and the anti-lost function are different from each other.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The walkie-talkie according to the present invention can be used as a general function and anti-lost function.When using the walkie-talkie as a lost child function, the guardian's life radio periodically transmits a unique device ID to the child's live radio, Check the incoming response propagation. At this time, if the response radio of the children's home radio is weak or if the response radio is not received within a certain time, the guardian's home radio is activated with an anti-lost function. Therefore, the guardian and the child can talk to each other to prevent the occurrence of a lost child.

1 is a block diagram of an anti-lost life radio system for a guardian according to the present invention, the general life radio circuit unit 100 including a PTT on / off circuit unit 190, an anti-loan function unit 111, and a switching circuit unit 110. The anti-lost function unit 111 includes a device ID storage unit 120, a control signal transmitter 130, a control signal receiver 140, a device ID detector 150, a weak radio wave detection circuit unit 160, The radio wave waiting circuit unit 161, the emergency mode switching circuit unit 162, the specific channel / tone setting circuit unit 170, the alarm generator 180, and the PTT on / off signal generator 191 are configured.

The guardian radio is a general mode capable of general calls, the anti-lost mode for monitoring the separation with the children's radio according to the switch on the anti-lost switch of the switching circuit, the child's radio when the predetermined distance from the child's radio in the anti-lost mode It operates in three modes of emergency mode to control PTT on / off.

While using the walkie-talkie as a general function and operating the walkie-talkie switch of the switching circuit to use the walkie-talkie as a lost child function, the above function is activated.

When the walkie-talkie is switched to the lost child mode, the unique device ID stored in the device ID storage unit 120 transmits a weak radio wave through the control signal transmitter 130 to the child walkie-talkie. Thereafter, the control signal receiving unit 140 receives the response radio wave transmitted from the children's home radio, and the unique device ID among the received control signals is stored in the device ID storage unit 120 through the device ID detection unit 150. It is compared with the unique device ID and sent to the radio wave waiting circuit unit 161.

The radio wave waiting circuit unit 161 instructs transmission of a unique device ID to the device ID storage unit again after a predetermined time when the device ID radio wave is received within a predetermined time, and switches to the emergency mode if the device ID radio wave is not received within the predetermined time. The circuit unit 162 is operated.

In addition, the weak signal detecting circuit unit 160 detects a weak radio wave received from the control signal receiver. At this time, when the received weak radio wave is determined as a unique device ID of the child radio by the device ID detection unit 150 and the result is transmitted to the weak radio detection circuit unit 160, the weak radio detection circuit unit 160 is an emergency The mode switching circuit unit 162 transmits a signal according to the weak radio wave reception, and the emergency mode switching circuit unit 162 operates.

When the emergency mode switching circuit 162 is operated, an alarm is generated by the alarm generator 180 at the same time, and the PTT on / off signal generator 191 is operated. The PTT on / off signal generator 191 generates an on / off signal according to the operation of the PTT on / off circuit unit 190 and transmits a PTT on / off signal to the children's living radio.

Here, the control signal of the guardian's living radio and the child's living radio uses 447 MHz, and the general voice signal uses the 448 MHz frequency.

The function of each radio of the present invention will be described in detail.

The general walkie-talkie circuit unit 100 is a circuit unit that performs a general walkie-talkie function. In general, the voice signal is transmitted, and the frequency band uses 448 MHz.

The switching circuit unit 110 switches to a normal mode which performs only a general life radio function and a child protection mode including a child protection function, and alarms when a child falls from a guardian over a certain distance after switching to a child protection function. A beep sounds and the system automatically enters the emergency mode.

The device ID storage unit 120 is a circuit unit for storing a unique device ID corresponding to the radio of the guardian and the child and providing a unique device ID as necessary.

The control signal transmitter and the control signal receiver 130 and 140 are used to measure the distance to the child using the 447MHz frequency. For reference, the principle of measuring the distance to the child is the acknowledgment wave including the device ID signal, if the control signal transmitter 130 is a distance that the children's living radio does not receive the radio wave when transmitting the unique device ID Even if the acknowledgment wave is transmitted, the guardian's household radio does not receive the response wave or if the received response wave is weak, the distance between the guardian and the child is recognized by a certain distance.

In addition, the control signal transmitter 130 transmits a unique device ID periodically sent from the device ID storage unit 120 in the anti-lost mode, and in the emergency mode, the PTT on / off signal generator of the guardian household radio ( 191 transmits the PTT on / off signal to the children's home radio.

In addition, the control signal receiver 140 transmits the response radio wave transmitted by the children's home radio to the device ID detector 150 in the lost child mode.

The device ID detector 150 is a circuit for detecting a unique device ID signal among the received radio waves.

The weak signal detecting circuit 160 checks the sensitivity of the response radio wave transmitted by the child. When the weak signal is determined to be weaker than a predetermined level, the weak signal detecting circuit 160 sends a signal to the emergency mode switching circuit 162.

The radio wave waiting circuit unit 161 is a circuit unit waiting for reception of response radio waves for a predetermined time and periodically generating an acknowledgment signal. Here, if the response radio wave is detected within a certain time, after the predetermined time elapses to control the unique device ID signal generation, if the response radio wave is not detected for a certain time is determined to fall over a certain distance signal to the emergency mode switching circuit unit 162 automatically Send it.

The emergency mode switching circuit unit 162 determines signals input from the radio wave waiting circuit unit 161 and the radio wave weak detection circuit unit 141 so that the unique device ID is not detected within a predetermined time or the unique device ID is detected, but It is a circuit part that automatically switches to emergency mode when the strength is below a certain level.

The specific channel / tone setting circuit unit 170 is a circuit unit for converting a channel and a tone of the radio into a specific channel and tone when the home radio is normally used in various channels and tones.

The alarm generation unit 180 is a circuit unit that generates an alarm when the emergency mode switching circuit unit 162 operates.

The PTT on / off signal generator 191 is a circuit for generating a PTT on / off signal according to the on / off of the PTT on / off circuit unit 190 under the control of the emergency mode switching circuit in an emergency mode.

2 is a block diagram of a child anti-child radio system according to the present invention, the general life radio circuit unit 200, PIA on-off circuit unit 290 including a child prevention function unit 211 and the switching circuit unit 210 The anti-lost function unit 211 includes a device ID storage unit 220, a control signal transmitter 230, a control signal receiver 240, a device ID detector 250, and a specific channel / tone setting circuit unit 270. ), The PTT on / off detection circuit 300 and the child emergency mode switching unit 400.

First, the anti-lost mode is activated by selecting the anti-lost mode in the switching circuit unit.

When the guardian living radio transmits a radio wave, it is determined whether the radio wave transmitted from the control signal receiver 240 of the child radio has a device ID radio signal or a PTT on / off signal. Here, if the device ID signal is sent to the device ID detection unit 250 compared with the device ID stored in the device ID storage unit 220, if the device ID is the same, the control signal transmitter 230 transmits the response radio to the guardian household radio Send.

If it is a PTT on / off signal, it is sent to the PTT on / off signal detection circuit 300, and the child emergency mode switching unit 400 is operated. The child emergency mode switching unit 400 converts the child living radio into the emergency mode, and simultaneously converts the child living radio into the same channel and tone as the guardian living radio by the specific channel / tone setting circuit 270, The PTT on / off circuit unit 290 is controlled.

The function of each radio of the present invention will be described in detail.

The general walkie-talkie circuit 200 is a circuit part that performs a function of a walkie-talkie. In general, the voice signal is transmitted, and the frequency band uses 448 MHz.

The switching circuit unit 210 is a circuit unit for converting a general functional living radio which performs only a general radio function into a lost child mode.

The device ID detection unit 250 is a circuit unit that detects only the unique device ID by checking the radio wave received by the control signal transmission unit 230. In addition, the device ID detection unit 250 is a circuit unit for comparing the detected unique device ID and the unique device ID stored in the device ID storage unit 220 to check whether there is a match.

The device ID storage unit 220 is a circuit unit that stores a unique device ID corresponding to the radio of the guardian and the child and provides a unique device ID as needed.

The control signal receiver 240 checks radio waves periodically transmitted by the guardian's home radio, and receives a device ID and a PTT on / off signal and sends a signal to the device ID storage unit and the PTT on / off signal detection circuit. to be.

The control signal transmitter 230 is a circuit unit for transmitting a control signal including a response propagation unique device ID and a PTT on / off signal according to the received device ID.

The PTT on / off signal detecting circuit unit 300 is a circuit unit for detecting a PTT on / off signal of radio waves received by the control signal receiving unit 240.

The child emergency mode switching unit 400 is a circuit unit which automatically switches to an emergency mode when a signal is detected by the PTT on / off signal detection circuit unit 300.

The specific channel / tone setting circuit unit 270 is a circuit unit for converting a channel and a tone of the radio into a specific channel and tone when the home radio is normally used in various channels and tones and is switched to the emergency mode.

The PTT on / off circuit unit 290 is controlled according to the operation of the child emergency mode switching unit 400.

3 is an operation flow chart of the mobile radio for preventing the loss according to the present invention, first when the guardian and the child operates the switching circuit unit (S100), the guardian's household radio transmits a unique device ID which is a weak acknowledgment radio wave at regular intervals. (S102). Here, the transmission of the unique device ID at regular intervals requires the children's walkie talks to acknowledge.

When the child's home radio receives the unique device ID signal (S104), and it is confirmed that the child's home radio is the unique device ID signal (S106), the radio device transmits a weak response radio to the guardian's home radio (S108).

The guardian's home radio determines whether the received response radio wave is transmitted from the child's home radio, and sends a signal to the radio standby circuit unit when it is confirmed that the unique device ID radio wave is transmitted from the child's home radio.

The radio wave waiting circuit unit waits for a response radio wave for a predetermined time (S112), and if a response radio wave is received within a predetermined time, checks the sensitivity of the radio wave (S114). Here, if the sensitivity of the radio wave is a weak level of a certain level periodically transmits a unique device ID to the children's radio (S102).

If the children's walkie talkie does not receive the acknowledgment radio wave and does not transmit the radio wave, or if the acknowledgment radio wave is much weaker than a certain level, the alarm of the guardian's radio walks and the guardian emergency mode is switched to a specific channel. And tones are automatically set (S116).

When switched to the emergency mode, the controllable range is extended to the same range as the radio range. This requires much stronger radio waves than acknowledgment radio waves and response radio waves that transmit weak radio waves at regular intervals. Therefore, when the radio mode is switched to the emergency mode, the control radio waves are output stronger than usual. Thus, children's living radios can be controlled over a wide radius.

When the guardian's PTT switch is activated (S118), a PTT signal is transmitted to the child's home radio (S120), and the child's home radio receives the child's emergency mode, and is connected to a specific channel identical to that of the guardian's home radio. The tone is automatically set (S116).

When the PTT ON signal is received / detected in the child radio (S122), the PTT switch of the child radio is automatically turned off (S124). Therefore, the guardian can talk to the child (S126).

The guardian turns off the PTT switch after the call with the child (S128, S130). The walkie-talkie's living radio transmits a PTT OFF signal to the walkie-talkie of the child (S132), and the walkie-talkie of the child who receives / detects the PTT OFF signal automatically turns on the PTT switch so that the child can talk to the guardian. It may be (S134 to S140). Steps 118 to 140 are repeated.

As described above, when the child falls over a certain distance from the guardian, an alarm sounds to prevent the occurrence of missing children, and the guardian can control the children's radio, so even children who do not know how to operate the radio can easily reach the guardian. There is an advantage to talking.

In addition, when a child is lost, the guardian and the child can communicate with each other, so that the location of the child can be accurately determined.

Claims (6)

A general life radio circuit including a push to talk (PTT) switch on / off circuit; Anti-lost function; And It includes a switching circuit for activating the anti-lost function, The anti-lost function part, A control signal receiver configured to receive a control signal including an ID; A control signal transmitter for transmitting a control signal; A device ID storage unit for storing a unique device ID of the home radio and transmitting the unique device ID to the control signal transmitter; A device ID detector which detects an ID from a control signal received by the control signal receiver and compares the ID with a unique device ID of the device ID storage unit; A propagation standby circuit unit for determining whether the same ID as that of the unique device ID is detected by the device ID detection unit within a predetermined time and outputting the result; An alarm generator for generating an alarm; A specific channel / tone circuit unit configured to set a transmission / reception channel and a tone of the general living radio circuit unit to a specific channel; A PTT on / off signal generator for generating a PTT on / off control signal according to the signal of the PTT on / off circuit and transmitting it to the control signal transmitter; And According to the output of the radio standby circuit portion, Mia characterized in that it comprises a guardian portable radio including the alarm generation unit, the specific channel / tone circuit unit and the emergency mode switching circuit unit for activating the PTT on / off signal generator. Prevention portable radio system. The apparatus of claim 1, further comprising a radio wave weakening circuit unit configured to output to the emergency mode switching circuit unit whether the magnitude of the control signal received by the control signal receiving unit is less than or equal to a predetermined value. And the emergency mode switching circuit operates according to the output of the weak radio wave detection circuit unit and the radio wave standby circuit unit. The apparatus of claim 1, wherein the radio standby circuit unit outputs a signal instructing transmission of a unique device ID to the device ID storage unit at predetermined time intervals. A general life radio circuit including a push to talk (PTT) switch on / off circuit; Anti-lost function; And A switching circuit unit for activating the anti-lost function unit, wherein the anti-loan function unit, A control signal receiver configured to receive a control signal including an ID and a PTT on / off signal; A control signal transmitter for transmitting a control signal; A device ID storage unit for storing a unique device ID of the home radio and transmitting the unique device ID to the control signal transmitter; A device ID detector which detects an ID from the control signal received by the control signal receiver, compares the ID with the unique device ID of the device ID storage unit, and outputs an output signal instructing to transmit the unique device ID to the device ID storage unit if the ID is the same; A PTT on / off signal detection circuit unit for detecting a PTT on / off signal from the control signal received by the control signal transmitter; A specific channel / tone circuit unit configured to set a transmission / reception channel and a tone of the general living radio circuit unit to a specific channel; And Mia characterized in that it comprises a child portable radio including a child emergency mode switching unit for activating the specific channel / tone circuit unit according to the detection signal of the PTT on / off signal detection circuit unit and controls the PTT on / off circuit unit Prevention portable radio system. The anti-defective portable device according to claim 4, wherein when the PTT on / off signal detecting circuit unit of the portable portable children detects the PTT on signal, the portable portable children are turned off by the PTT, and when the PTT off signal is detected, the portable radio for the lost child Walkie-talkie system. The anti-defect portable radio system according to claim 1 or 4, wherein the frequencies of use of the general life radio circuit unit and the anti-lost function unit are different from each other.