KR20020064495A - GPS Based on trevelor position's storing and guidance system, and the method - Google Patents

Abstract

The present invention relates to a travel device for storing and guiding a travel route using a positioning system (GPS: Global Positioning System and GPS for convenience, hereinafter referred to as GPS). The GPS receiver 104 and the control unit 106 are provided. ), The information providing screen 112, the voice output unit 113, the numeric input unit (114). The GPS receiver 104 analyzes the signals 102 obtained from the 24 satellites 101 installed by the US Department of Defense through the GPS antenna 103 to determine the latitude and longitude coordinates 105 of the current position of the GPS receiver 104. ) (Hereinafter referred to as positional coordinates) is calculated. The calculated position coordinates are transmitted to the control unit 106 connected to the GPS receiver 104. When the target position coordinate values are input to the control unit 106, the control unit compares the target position coordinates with the current position coordinates. The direction to the target point and the straight line distance are displayed on the information providing screen 112 on the basis of the traveling direction at the current point, and the command voice is output to the voice output unit 113. The method shown in the information providing screen 303 is displayed in the 12-hour direction centering on the current traveling direction. The progress direction 502 is a direction from the past point 505 to the present point 504. In addition, the voice output unit 203 outputs a direction and a linear distance indicating voice in the same manner as the direction and distance appearing on the information providing screen. As such, the information displayed on the information display screen and the voice outputter enables the traveler to know in which direction (305) to go in order to get from the current point 304 to the target point 306.

There are two ways to input the coordinates of the target point, one of which is a method of directly inputting the position coordinates of the target point with the numeric input unit 204 connected to the control device, and the other is a button 205 connected to the control device. Press to save the current position coordinates at that time and enter them.

There are two ways to save the location coordinates, one is the sequential point storage method where the traveler saves the route and saves the information about the sequential passing position in order to return to the starting point. Or, it is a method of storing a specific location to store a dangerous area and to alert the traveler when it passes through the point so that the traveler can be alerted. The storage medium 107 uses RAM 108 (Random Access Memory) and Flash ROM 109 (Read Only Memory). The storage medium 107 utilizes the advantages and disadvantages of the two memories. When 405 writes to the RAM (403), the moment the power is turned off (406), it detects this and stores the contents in the RAM in the Flash Memory (404).

Description

GPS based on trevelor position's storing and guidance system, and the method}

The present invention belongs to the field of navigation system technology based on GPS, and the application technology of GPS is mainly used to track the position of a moving object and to measure the geographical absolute position. The conventional technique is to find the position on the electronic map using the position coordinates obtained through GPS based on the established electronic map. Therefore, in order to utilize this technology for all regions, it is accompanied by the condition that an electronic map of all regions must be established. As a result, it becomes difficult to construct an electronic map by measuring accurate absolute coordinates.

Conventional implementations of the present invention include a car navigation system, which functions to inform the user of a location to a target point using an electronic map stored in a medium such as a CD-ROM.

The present invention, unlike the prior art, to implement a software and hardware technology that can build a navigation system using only a GPS receiver, a control device, a numeric input device, an information display screen, a voice output device without building an electronic map. Software technology relates to a method of obtaining a direction and distance from a current position to a target point based on a moving direction using position coordinates obtained from GPS, and hardware technology related to a device implementation for inputting, storing, and outputting a target point. . In particular, the storage device includes a technology that utilizes flash memory to modify directly at the control device and not be erased even when the power is turned off.

1 is an overall flow chart of the present invention.

2 is an exemplary appearance model of the present invention.

Figure 3 illustrates the use of the present invention

Figure 4 is a storage method for a storage medium

5 is a method for setting a traveling direction and a straight line distance

The present invention consists of a GPS receiver 104, a control device 106, an information providing screen 202, a voice output unit 203, a numeric input unit 204, a position coordinate storage button 205. Of the 24 satellites installed by the US Department of Defense, when a signal 102 received from three or more GPS satellites 101 is transmitted to the GPS receiver 104 through the GPS antenna 103, the GPS receiver 104 is interposed between the GPS satellites. The position coordinate 105 of the current GPS receiver is calculated by calculating the distance of. When the calculated position coordinates 105 are transmitted to the control device 106, the control device calculates the moving direction 301 of the receiver using the position coordinates transmitted in real time. The traveling direction 502 is determined as the direction from the past point 505 to the current point 504, and based on this, the direction 503 and the straight line distance from the current position to the target point are calculated. Then, the calculated direction and the straight line distance are displayed on the information providing screen 202, and the direction and distance indicating voice are output to the voice output unit 203. The method displayed on the information providing screen indicates the direction to proceed from the current position in the 12 hour direction based on the progress direction. The advancing direction is determined from the information providing screen 303 at the 12 o'clock direction 301, and the information providing screen 303 indicates which direction 305 should be moved from the current position 304 to reach the target point. The voice output unit outputs the command voice of the same direction and distance appearing on the information display screen. In addition, a voice indicating the arrival at the target point or a voice indicating the dangerous area is also output according to the situation.

At this time, there are two ways to input the target coordinates. One method is to directly input the position coordinate value of a specific target point by using a numeric input device, and the other is a traveler in the middle of a travel route through which he / she passes. To save the current position coordinates from the GPS receiver.

When you go to the first place, if you enter the latitude and longitude values in advance, the current location coordinates become the target point and the current position is reached until you reach the target point. It is used to calculate the direction and distance from the direction to the target point.

The position coordinates entered in the second method are used as the following methods. If the current location coordinates received from the GPS receiver are sequentially stored in the order in which they were passed by pressing the location coordinate storage button 205 at the point where the traveler changes direction or important point on the first way, when the traveler returns to the point where he left again, The position coordinates become sequential target points and indicate the direction and distance to be taken from the current progress direction on the information display screen and the audio output device. Therefore, if you follow the stored position coordinates in order, you will arrive at the starting point.

There are two ways to save position coordinates: sequential point storage method and specific point storage method. The sequential point storage method is for instructing directions so that when the traveler sequentially stores the moving route and returns to the point where he started again, the traveler may return to the reverse order. The method of saving a specific point is to save the location of the accident location or the danger area and save the location coordinates for the specific point by using the Save Current Location button or the numeric input to trigger an alarm when the point passes.

The storage medium 107 also uses a RAM 108 (Random Access Memory) and a Flash ROM 109 (Read Only Memory). The RAM can change the contents of the memory freely, but when the power supply is interrupted, the contents of the memory are deleted. Flash ROM, on the other hand, takes longer than RAM to write to memory and has a limited number of saves. Therefore, while the power is being supplied utilizing the advantages and disadvantages of the two memories (405), the memory is written (403) while the power is cut off (406) and the contents of the RAM are transferred to the Flash ROM (404). At this time, when the power supply is cut off, the A / D converter is used to detect when the voltage falls below a specific voltage. In addition, it is necessary to maintain the voltage during the time when the contents of RAM are transferred to the Flash ROM and stored. It is charged while the power is supplied using a supercapacitor (capacitor having a capacity of 1F), and then the contents of the memory are transferred when the power is cut off. Supply the necessary power.

The present invention provides a method for guiding a person traveling to an unfamiliar place or visiting a new place, so that they can easily go to the target point without getting lost or return safely to the starting point. Unlike the existing navigation system, there is no need to build an electronic map, it is inexpensive, and it is easy to use because it is simple to use. In particular, mountaineers will be prevented from getting lost in distress by getting lost in the mountains and avoiding getting lost in the streets. In addition, when visiting a foreigner visiting a hotel or tourist destination, or when coming back to Korea, it will be possible to easily reach the target point without the help of others.

For example, when the traveler is traveling on a way, if the position coordinate of the target point to be displayed on the map is directly input by using the numeric input device, the direction and the straight line distance from the current position to the target point are provided. Appears on the screen. Follow the directions as shown on the screen and input the position coordinates sequentially by pressing the position coordinate input button at the main branch point. When you arrive at your destination, you will be notified that you have arrived at your destination. When you turn off the power to save the battery, the main position coordinates saved in RAM are automatically saved in Flash ROM.

After finishing work at the point of arrival and turning on the power to return to where it left off, the contents of the Flash ROM are transferred to the RAM, and the information display screen and the voice output device show the direction of the last position coordinate previously entered from the current position. And distance appear. When you arrive at the location, the last position coordinate you entered next becomes the target point and appears on the information display screen and audio output. If you continue to follow the instructions provided by the information display and voice output, you will arrive at the point where you started.

Claims (6)

Often, electronic navigation is essential for navigation. However, the present invention uses the position coordinate 105 obtained from a GPS (hereinafter, referred to as GPS for convenience) receiver and a target coordinate input in advance to the target coordinate 503 based on the traveling direction 502. Since it does not need to build an electronic map. Therefore, using the position coordinates 105 obtained from the GPS receiver, the travel direction 301 and the distance of the person 307 or the object (vehicle) carrying and moving the GPS receiver 104 are calculated, and the travel direction is referred to. And a direction 302 and a straight line distance to the target point on the information providing screen 303, and outputting a voice command identical to the direction tail distance to the voice output device. Since GPS uses satellites, it can be used without the influence of countries or regions. Therefore, since the invention of the device that can be used by foreign travelers and foreign mountaineers, to store both the latitude and longitude in using the position coordinates 105 obtained from the GPS receiver. A method of inputting a target point is a method of storing the current position coordinate 105 obtained from the GPS receiver 104 by pressing the position coordinate storage button 205, and the latitude and longitude coordinates of the target point using the numeric input unit 204. How to enter it manually. An information providing screen and a voice output device, wherein the information providing screen 303 indicates a direction of the target point 306 in eight directions with the heading direction 301 upward, and outputs the direction by voice. To store location coordinates, a sequential point storage method in which a traveler saves a movement route and stores information about sequential passing locations in order to return to a starting point, and stores an accident accident area or a dangerous area A method of storing points in order to alert the traveler when they pass, allowing the traveler to be alert. As a method for recording the storage medium 107, the RAM 108 and the Flash ROM 109 are used to store the position coordinates, and when the power is turned on (405) using the advantages and disadvantages of the two memories, the RAM 107 is written (403). (406) transferring the contents of the RAM to the Flash ROM (404) at the moment the power is turned off (406), and using a 1F capacitor to maintain the voltage while storing in the Flash ROM.