KR20050009454A - Apparatus of lost child resistant with pda - Google Patents

Abstract

PURPOSE: A device for preventing a lost child using a PDA(Personal Digital Assistant) and a GPS(Global Positioning System) is provided to prevent the lost child with correct understanding for a position of the child by understanding the current position and a moving route of the lost child through the GPS, transceiving data through an RF(Radio Frequency) signal, and displaying the data on the PDA. CONSTITUTION: A tag(20) receives/converts a GPS signal into the RF signal and transmits the RF signal. A tag receiver(40) understands the current position and the moving route of the lost child by receiving the RF signal transmitted from the tag and, transfers/displays it to the PDA(30). The PDA comprises a memory storing GIS(Geographic Information System) information and various kinds of alarm information, and a CPU. The CPU displays the current position and the moving route of the tag on the display part by referencing the GIS information and transmits the alarm signal to the tag receiver in case that the current position is output a predetermined radius.

Description

MIA prevention device using PDA {APPARATUS OF LOST CHILD RESISTANT WITH PDA}

The present invention relates to a device for preventing a child using a PDA. More specifically, the present invention identifies a child's current location and a moving path through a GPS, transmits and receives this data as an RF signal, and displays the data on a PDA. It relates to an anti-lost device using a PDA that pinpoints the location and prevents it.

Conventional anti-lost device is shown in the Republic of Korea Utility Model Application No. 1999-0021409 (1999/10/06) "Anti-lost and loss prevention alarm device", when the distance between the user and belongings drops more than a certain degree It detects this and sounds an alarm, and installs a distance sensor that can be fixed to belongings, etc., or can exchange signals with each other in a plurality of tongs that are easy to carry, and by the distance sensor If it is detected that the distance between the predetermined distance or more is characterized in that the alarm sound generating unit for generating an alarm sound.

However, such a conventional anti-loaning device has a disadvantage in that its use range is very narrow, that is, it can be used only when the guardian and the child are within several tens of meters. There was a problem in that it was not possible to determine the exact current position and the movement path of the child to which location.

Accordingly, the present invention is to solve the above-mentioned conventional problems, by grasping the current position and movement path of the lost child through GPS, and transmitting and receiving this data as an RF signal displayed on the PDA, a wider range of children It is an object of the present invention to provide an anti-lost device using a PDA to pinpoint the location and prevent the lost.

1 is a control block diagram of an anti-loan apparatus using a PDA according to the present invention.

2 is a control block diagram illustrating in detail the transmitter of the present invention;

Figure 3 is a control block diagram showing in detail the receiver and PDA of the present invention.

4 is a control block diagram illustrating an example in which a receiver is detachably configured to a PDA as another embodiment of the present invention.

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

10: GPS satellites 20: transmitter

21: GPS receiver 22: display unit

23: key input unit 24: CPU

25: RF transceiver 26: memory

27: speaker output unit 30: PDA

31: connection portion 32: memory

33: CPU 34: wireless transceiver

35 display unit 36 key input unit

40 receiver 41 RF transceiver

42: alarm display unit 43: speaker output unit

44: CPU 45: connection

46: memory

In order to achieve the above object, a device for preventing a child using a PDA according to the present invention includes a transmitter for receiving a GPS signal, converting the data into an RF signal, and transmitting the received signal, and receiving the RF signal and the current position and movement path of the child. In the anti-loan apparatus configured to receive the identification, and to display it on the PDA, The transmitter comprises: a GPS receiver for receiving a GPS satellite signal transmitted from a GPS satellite; A display unit which displays various input information and operation states; A key input unit for inputting a user's operation command and an emergency command; A CPU for converting satellite signals received from a plurality of GPS signals received through the GPS receiver to output position data indicating a current position; An RF transmission / reception unit for transmitting the position data and the emergency command outputted from the CPU to an RF signal of a predetermined frequency band or receiving and transmitting the RF signal to the CPU; The receiver includes: an RF transceiver for receiving the position data and the emergency command transmitted from the RF transceiver of the transmitter side to the CPU; An alarm display unit displaying an emergency state as a lamp blinks; A speaker output unit configured to output a message or an alarm sound; A memory for storing a predetermined alarm message; Receives location data and emergency command from the transceiver, transmits location data to the PDA, activates the alarm display unit according to the emergency command, or outputs a predetermined alarm message stored in memory to the speaker output unit. A CPU; The PDA may include a memory for storing GIS information or various alarm messages; Analyze the position data input from the receiver and display the current position and movement path of the transmitter on the screen of the display unit with reference to the GIS information of the memory, and send a specific alarm signal to the receiver when it is out of a predetermined predetermined radius. It is characterized by consisting of a CPU to transmit.

The receiver is removably configured with the PDA via respective connections formed in respective devices.

The transmitter includes a memory in which a predetermined output message is stored in advance; The apparatus may further include a speaker output unit configured to output a message stored in the memory under control of the CPU when a specific signal is received from the receiver.

The PDA further includes a wireless transceiver for transmitting the full text of the alarm message stored in the memory through the PSTN network to a predetermined position according to the control signal of the CPU.

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

1 is a control block diagram of an anti-lost device using a PDA according to the present invention.

As shown in the drawing, the present invention receives a GPS signal, converts the data into an RF signal, and transmits the received signal. And a receiver 40 that transmits the mark to be displayed.

Here, GPS (Global Positioning System) is a system that can accurately know its position using satellites anywhere in the world, as is well known, the position information is a GPS receiver to measure the exact time and distance from three or more satellites It is possible to calculate the current position accurately by triangulation method of three different distances. The accuracy of position varies between military and civilian use, but for civilian use, the horizontal and vertical error is about 10-15m and the speed measurement accuracy is 3cm per second. to be. In addition, the satellite is equipped with three atomic clocks to provide time information with an error of only one second in 36,000 years.

In addition, the PDA (Personal Digital Assistants) is a type of portable computer, a portable personal information terminal capable of inputting handwritten information, managing personal information, exchanging information with a computer, and the like. If you insert a file, you can move while still working, and like a notebook, it is a portable personal information terminal that can manage personal information or schedule. In the early stages, it was used only for limited purposes such as calculation and schedule management, but as information and communication technology developed rapidly, it was spotlighted as a representative information communication means of 'Post PC'.

2 is a control block diagram showing in detail the transmitter of the present invention, Figure 3 is a control block diagram showing in detail the receiver and PDA of the present invention.

As shown, the transmitter 20 of the present invention, the GPS receiver 21 for receiving a GPS satellite signal transmitted from the GPS satellite 10; A display unit 22 for displaying various input information and operation states; A key input unit 23 for inputting a user's operation command and an emergency command; A CPU 24 for converting satellite signals received from a plurality of GPS signals received through the GPS receiver 21 and outputting position data indicating a current position; It is composed of an RF transmitting and receiving unit 25 for transmitting the position data and the emergency command output from the CPU 24 to the RF signal of a predetermined frequency band or receives and transmits the RF signal to the CPU 24.

In addition, the receiver 40, the RF transceiver 41 for receiving the position data and the emergency command transmitted from the RF transceiver 25 of the transmitter 20 to the CPU 44; An alarm display unit 42 displaying an emergency state by flashing a lamp; A speaker output unit 43 for outputting a message or an alarm sound; A memory 46 for storing a predetermined alert message; Receives the position data and the emergency command from the transceiver 41, the position data is transmitted to the PDA 30, while operating the alarm display unit 42 in accordance with the emergency command, or the speaker output unit 43 ) Is composed of a CPU 44 which outputs a predetermined alarm message stored in the memory 46 in advance.

The PDA 30 further includes a memory 32 for storing GIS information or various alarm messages; Analyze the position data input from the receiver 40 and display the current position and the movement path of the transmitter 20 on the screen of the display unit 35 in advance, with reference to the GIS information of the memory 32. It is composed of a CPU 33 for transmitting a specific alarm signal to the receiver 40 when out of a predetermined radius.

Here, the transmitter 20 includes a memory 26 in which a predetermined output message is stored in advance; And a speaker output unit 27 for outputting a message stored in the memory 26 under the control of the CPU 24 when a specific signal is received from the receiver 40. The PDA 30 further includes a CPU. It is preferable to further include a wireless transmission and reception unit 34 for transmitting the full message stored in the memory 32 via the PSTN network to a predetermined position according to the control signal of (33).

Referring to the operation of the present invention configured in this way in more detail as follows.

The transmitter 20 is manufactured in the form of a watch, a necklace, a key ring, so that the child can easily carry it. When the transmitter is moved while the child is carrying it, its position is tracked by GPS and transmitted to the receiver 40 through an RF signal.

That is, when the guardian grasps the position of the child at normal times, first, the transmitter 20 of the present invention receives the GPS satellite signal transmitted from the GPS satellite 10 to the GPS receiver 21, and the CPU 24 The satellite signal is converted from the plurality of GPS signals received through the GPS receiver 21 to output position data indicating the current position. The positional data output from the CPU 24 is transmitted to the RF signal by the RF transceiver 25 in a predetermined frequency band.

Thereafter, the receiver 40 receives the position data transmitted from the RF transceiver 25 on the transmitter 20 side from the RF transceiver 41 and transmits the position data to the PDA 30 via the CPU 44. do. Therefore, the CPU 33 of the PDA 30 analyzes the position data input from the receiver 40 and displays the current position and the movement path of the transmitter 20 with reference to the GIS information of the memory 32. By displaying on the screen 35, the child's current position can be grasped easily.

On the other hand, the guardian can set the movable range of the child in advance by using the PDA (30). Therefore, when the movement range is set in this way, when the child leaves the predetermined range (100m / 300m / 500m / 1Km: S / W controllable) generates an alarm to the PDA 30 or the receiver 40.

That is, the CPU 33 of the PDA 30 transmits a specific alarm signal to the receiver 40 when the predetermined radius is out of the preset radius, and the alarm display unit 42 of the receiver 40 flashes an emergency state. The speaker output unit 43 outputs a message or an alarm sound stored in the memory 46 to quickly inform the guardian of the current situation.

In this case, preferably, the receiver 40 may also transmit an alarm signal to the transmitter 20 to transmit an alarm sound to a child outside a certain distance. That is, the transmitter 20 includes a memory 26 in which a predetermined output message is stored in advance; The speaker output unit 27 further includes a speaker output unit 27 that outputs a message stored in the memory 26 under the control of the CPU 24 when a specific signal is received from the receiver 40. You may ask for help from people around you by printing a "Do not go anymore" message to the child or by alerting you that you are missing.

On the other hand, when the child carrying the transmitter has a certain judging ability and behavior ability, and the user presses the switch of the key input unit 23 in case of danger, the transmitter 20 includes the above-described position data and an emergency signal informing of danger. Is sent to the receiver 40.

Accordingly, the alarm display unit 42 of the receiver 40 displays the emergency state as the lamp blinks, and the speaker output unit 43 outputs a message or an alarm sound stored in the memory 46 to promptly notify the guardian of the current situation. Inform. In addition, the PDA 30 carried by the guardian analyzes the position data input from the receiver 40 and displays the current position and the movement path of the transmitter 20 by referring to the GIS information of the memory 32. Display on the screen.

In this case, preferably, the receiver 40 may also generate an alarm sound to the transmitter 20 to call for help from those around.

In addition, if a predetermined time is delayed without inputting the PDA 30, a call can be automatically connected or a warning message can be sent for help. That is, the wireless transmission / reception unit 34 of the PDA 30 transmits the full text of the alarm message stored in the memory 32 through the PSTN network to a predetermined position according to the control signal of the CPU 33.

In addition, an alarm can be generated even when there is no data generation for a certain time.

On the other hand, since the receiver 40 of the present invention has a frequency of approximately 424.7 MHz and separates 20 channels, only the signal of the transmitter 20, which is the same channel as its own frequency, is received and there is no fear of crosstalk. The received data are compared (tag_id / receiver_id) to display only the authenticated ID on the receiver 40 side.

4 is a control block diagram illustrating an example in which a receiver is detachably configured to a PDA according to another embodiment of the present invention, wherein the receiver 40 has respective connections 31 and 45 formed in respective devices. By being detachably configured with the PDA 30 through,), the PDA 30 can be easily detached and used on the PDA 30 that is used anytime and anywhere, and the PDA 30 is standardized by standardizing and connecting the connection parts 31 and 45. It can also be attached to and detached from other normal computer terminals.

Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the above-described embodiments, and the present invention is not limited to the above-described embodiments without departing from the spirit of the present invention as claimed in the claims. Various modifications can be made by those skilled in the art, and such modifications are intended to fall within the scope of the appended claims.

As described above, according to the anti-lost apparatus using the PDA according to the present invention, the present position and the movement path of the lost child are grasped through the GPS, and the data is transmitted and received as an RF signal and displayed on the PDA, thereby providing a child in a wider range. Accurately determine the location of the effect is to prevent the missing child.

In addition, the guardian can set the child's mobile range in advance, and if the child is out of the specified range, an alarm can be triggered and the location can be displayed. There is also an effect that you can call for help by connecting to or sending a warning text.

Claims (4)

A transmitter 20 for receiving a GPS signal and converting the data into an RF signal and transmitting the received signal, and a receiver for receiving the RF signal to identify the current position and movement path of the lost child and to display it on the PDA 30 ( In the anti-fog device composed of 40), The transmitter 20, A GPS receiver 21 for receiving a GPS satellite signal transmitted from the GPS satellites 10; A display unit 22 for displaying various input information and operation states; A key input unit 23 for inputting a user's operation command and an emergency command; A CPU 24 for converting satellite signals received from a plurality of GPS signals received through the GPS receiver 21 and outputting position data indicating a current position; An RF transceiver 25 for transmitting the position data and the emergency command outputted from the CPU 24 to an RF signal of a predetermined frequency band or receiving and transmitting the RF signal to the CPU 24; The receiver 40, An RF transceiver 41 which receives the position data and the emergency command transmitted from the RF transceiver 25 at the transmitter 20 and transmits it to the CPU 44; An alarm display unit 42 displaying an emergency state by flashing a lamp; A speaker output unit 43 for outputting a message or an alarm sound; A memory 46 for storing a predetermined alert message; Receives the position data and the emergency command from the transceiver 41, the position data is transmitted to the PDA 30, while operating the alarm display unit 42 in accordance with the emergency command, or the speaker output unit 43 A CPU 44 for outputting a predetermined alarm message stored in advance in the memory 46; The PDA 30, A memory 32 which stores GIS information or various alarm messages; Analyze the position data input from the receiver 40 and display the current position and the movement path of the transmitter 20 on the screen of the display unit 35 in advance, with reference to the GIS information of the memory 32. Missing device using a PDA, characterized in that configured to send a specific alarm signal to the receiver 40 when out of a predetermined radius. 2. The receiver of claim 1, wherein the receiver 40 Missing device using a PDA, characterized in that the removable connection with the PDA (30) through each connecting portion (31) (45) formed in each device. The method of claim 1, wherein the transmitter 20 A memory 26 in which predetermined output messages are stored in advance; Mia using a PDA further comprises a speaker output unit 27 for outputting a message stored in the memory 26 under the control of the CPU 24 when a specific signal is received from the receiver 40 Prevention device. The method of claim 1, wherein the PDA (30) Loss prevention apparatus using PDA, characterized in that it further comprises a wireless transmission and reception unit 34 for transmitting the full text of the alarm message stored in the memory 32 through the PSTN network according to the control signal of the CPU 33 .