KR20020016158A - Fine position detecting apparatus in close range - Google Patents

Abstract

PURPOSE: A short-distance precise position detector is provided to accurately indicate the position of a sub-transmitting and receiving device via a main transmitting and receiving device within a short distance less than 1km. CONSTITUTION: A short-distance precise position detector comprises a sub-transmitting and receiving device(10) installed in a moving object and a main transmitting and receiving device(20) to call the sub-transmitting and receiving device. The sub transmitting and receiving device includes an ID(Identification) number set-up unit(11), a first controller(13), a first GPS(Global Positioning System) receiving unit(15), and a first transmitting and receiving unit(17). The first controller performs an operating program. The first GPS receiving unit outputs present position data having an error range less than 100m. The first transmitting and receiving unit has a transmitting and receiving range less than 1km. The main transmitting and receiving device includes a data input unit(21), a second controller(23), a second transmitting and receiving unit(25), a second GPS receiving unit(27), and a display unit(29). The second controller calculates accurate position within 1m by correcting the position data of the sub-transmitting and receiving device.

Description

Fine position detecting apparatus in close range

The present invention relates to a near-field precision position detecting apparatus, and more particularly, to a near-field precision position detecting apparatus capable of accurately displaying the position of a sub-transceiver in a main transceiver unit within an error range within 1m within a short range of 1km. will be.

In general, a conventional position detection device for preventing a lost child, to identify the location of a companion party, or to monitor the position of important items, mainly a transmission device for transmitting a specific frequency and a receiving device for receiving the transmitted frequency The location of the other party was determined by the sensitivity of the transmission signal or voice transmission / reception with each other.

For example, in the anti-lost device for preventing the lost child, a transmission device having a specified transmission output is provided to the child, and the reception occurs when the child is separated by a certain distance or more while the reception device is carried by the guardian. Detecting a decrease in sensitivity, the distance was inferred to generate an alarm signal to call the guardian's attention. In the case of a traveling party, a radio was used to communicate with each other.

However, in the conventional apparatuses as described above, the anti-lost apparatus has a problem that calculation of distance using detection of reception sensitivity is not easy and its problem is unknown.

In other words, the place using the anti-lost device is a place where a lot of people come and go, firstly, there is a problem in that the reception sensitivity is changed irregularly according to the moving direction of the person who passes and the guardian, and a malfunction often occurs. Second, since the detection principle is to detect the reception distance, there is a problem that the direction in which the child exists without relying on the time can not be known.

In addition, in the device for identifying the location of the accompanying party, first, if there are a lot of party, there is a problem that can not know their respective positions at once, and second, one of the party carrying the radio can not use the radio. There is a problem in that it is not possible to grasp the location at all when there is a state, and third, there is a problem that there is no way to find their location on the map, such as fishing, hiking, trekking.

In addition, in the conventional GPS system, accurate position detection is difficult due to various error factors such as satellite time error, satellite position error, ionospheric refraction, convective layer refraction, receiver noise, multipath, and SA. In the case of the C / A code, the horizontal error combined with all the errors is 28m without SARK operation and 100m with operation.

Therefore, it is difficult to detect the exact position with the existing GPS method, and only limited use was possible.

Therefore, the present invention was created to solve the above-mentioned drawbacks, and an object of the present invention is to accurately display the position of the sub transceiver in the main transceiver within 1 km within an error range within 1 m. The present invention provides a short range precision position detection device.

1 is a view showing a short-range precision position detection apparatus according to the present invention.

2 is a flowchart illustrating the operation of the position detection device according to the present invention.

* Description of the symbols for the main parts of the drawings *

10 ... Sub transceiver 11 ... Unique number setting unit

13 ... 1st controller 15 ... 1st GPS receiver

17 ... 1st transceiver 20 ... main transceiver

21 ... data input 23 ... second controller

25 ... 2nd transceiver 27 ... 2nd GPS receiver

29.Display

In order to achieve the above object, the first apparatus of the present invention includes a first GPS receiver for receiving signals transmitted from three or more satellites and outputting current location information, a unique number setting unit for setting a unique number, and transmission data. And a first transmission / reception unit for receiving a high frequency signal and a call signal received through the first transmission / reception unit, the current position information received by the first GPS receiver and the unique number set in the unique number setting unit. A sub transmission / reception device having a first controller which is generated as transmission data and controlled to be transmitted through the first transmission / reception unit; And

A data input unit for inputting a unique number and call data of the sub transceiver to call the sub transceiver, a second GPS receiver for receiving signals transmitted from three or more satellites and outputting current location information, and the sub A second transceiver for receiving a high frequency signal transmitted from a transceiver and transmitting a call signal of the sub transceiver, a display unit for indicating a position of the sub transceiver, and call data input from the data input unit; The call signal is transmitted through a second transceiver, and the DGPS correction operation is performed using the current position information of the sub transceiver apparatus received through the second transceiver and the current position information obtained through the second GPS receiver to perform a DGPS correction operation. Second cone which displays the position on the display part with error range within 1m It characterized by having a main transmission and reception apparatus provided with a roller.

The second apparatus of the present invention receives a signal transmitted from three or more satellites and outputs current location information, a unique number setting unit for setting a unique number, and transmits transmission data, and transmits a high frequency signal. Receives a call signal and the location information through a first transceiver for receiving the first, the first transceiver and the current position information received from the first GPS receiver and the position information received by the DGPS correction operation A sub-transceiver having a first controller which accurately calculates a current position within 1m and generates calculated precision position information and a unique code as transmission data and transmits the same to the first transceiver; And

A data input unit for inputting a unique number and call data of the sub transceiver to call the sub transceiver, a second GPS receiver for receiving signals transmitted from three or more satellites and outputting current location information, and the sub A second transceiver for receiving a high frequency signal transmitted from a transceiver and transmitting a call signal of the sub transceiver, a display unit for indicating a position of the sub transceiver, and call data input from the data input unit; A second controller for transmitting a call signal through a second transceiver, receiving precision position information of the sub transceiver, received through the second transceiver, and displaying the position of the sub transceiver within an error range of 1 m or less on the display unit; It characterized by having a main transceiver with a.

Hereinafter, the present invention will be described in more detail with reference to the illustrated drawings.

1 is a view showing a near-field precision position detection apparatus according to the present invention.

In the figure, the apparatus of the present invention includes a sub transceiver 10 installed in the moving object, and a main transceiver 20 for calling the sub transceiver.

The sub transceiver 10 includes a unique number setter 11, a first controller 13, a first GPS receiver 15, and a first transceiver 17.

The unique number setting unit 11 includes a dip switch and a flash memory for setting a unique number of the sub transceiver 10 and storing the unique number.

The first controller 13 is composed of a microcomputer, a ROM, a RAM, and the like to execute an operation program.

The first GPS receiver 15 receives GPS data from three or more GPS satellites and outputs current location information having an error range within about 100 m.

The first transceiver 17 has a transmit / receive range within about 1 km and has a short range wireless transmit / receive configuration based on, for example, a blue tooth standard or a family radio system (FRS) wireless transmit / receive standard.

The main transceiver 20 includes a data input unit 21, a second controller 23, a second transceiver 25, a second GPS receiver 27, and a display unit 29.

The data input unit 21 is a key input unit and includes a numeric key and a call key. Generate the unique number data of the sub transceiver through the numeric key, and generate the call data with the call key.

The second controller 23 is composed of a microcomputer, a ROM, a RAM, and the like to execute an operation program. The second controller 23 corrects the position information of the sub transceiver 10 by using the position information of the sub transceiver 10 and the position information of the main transceiver 20 in the DGPS method, and calculates an accurate position within 1 m. do.

The DGPS method minimizes the positioning error by informing the receiver of how much data is currently received because two GPS receivers are nearby. One receiver is stationary, while the other moves and performs positioning. The stationary receiver calculates the difference between the measured value using the actual satellite and the actual value already determined. Therefore, the DGPS enables position measurement of less than 1m in the stationary state.

The second transceiver 25 has a transmission / reception range of about 1 km and has a short-range wireless transmission / reception configuration based on a blue tooth standard or a family radio transmission / reception standard FRS.

The second GPS receiver 27 receives GPS data from three or more GPS satellites and outputs current location information.

The operation of the object position detection device having the above configuration will be described in detail with reference to the flowchart shown in FIG. 2.

First, the unique number of the sub transceiver 10 manufactured by the present invention is set in the unique number setting unit 11 (S1). A sub-transmitting and receiving device 10 having a unique number set is installed on a specific object, for example, a baby's necklace or arm, and the like to have the baby's body (S2).

In order to find an infant to which the sub transceiver 10 is attached, the parent inputs a unique number using the numeric keys of the data input unit 21 of the main transceiver 20 and then presses the call key (S4).

The second controller 23 of the main transceiver 20 receives the unique number data and the call data generated from the data input unit 21 and transmits a call signal through the second transceiver 27 (S3). In addition, the GPS signal is received from the satellite through the second GPS receiver 27 to obtain current location information.

The sub transceiver 10 receives the call signal through the first transceiver 17 (S4). Accordingly, the first controller 13 decodes the received call signal to obtain unique number data, and checks whether the obtained unique number is the same as the unique number stored in the unique number setting unit 11 (S5). The GPS receiver receives a GPS signal from the satellite through the receiver 15 to obtain current location information. The obtained positional information is sent out through the first transceiver 17 (S6).

The second controller 23 of the main transceiver 25 corrects the position information of the sub transceiver 10 by the post-processing DGPS method with the position information of the received sub transceiver and its own position information. Therefore, the position of the sub transceiver 10 can be accurately obtained within 1 m. The correct position of the sub transceiver 10 obtained is displayed on the display unit 29 (S7).

Therefore, the parent can accurately find the infant's current position within 1 m on the display unit 29 of the main controller 20.

In the above-described embodiment, the DGPS operation is described by the second controller 23 of the main transceiver 20, but the operation may be performed by the first controller 13 of the sub transceiver 10. In this case, the main transceiver 20 acquires its current location information first and then transmits the current location information to the sub transceiver 10. When the sub-controller 10 receives the two types of position information received by the real-time DGPS correction operation and transmits the correct position information acquired by the correction back to the main transceiver 20, the main transceiver 20 It is displayed on the display part 29.

As described above, the present invention can accurately detect and display the position of the sub transceiver from the main transceiver within 1 km using the near field communication method and the GPS receiver within 1 km within a short range, such as home or office. This can be useful in an environment. It is also possible to detect the positions of one main transceiver and a plurality of sub transceivers.

Claims (2)

A first GPS receiver for receiving signals transmitted from three or more satellites and outputting current location information, a unique number setting unit for setting a unique number, and a first transmission / reception for transmitting transmission data and receiving a high frequency signal When a call signal is received through the first transceiver, the current location information received by the first GPS receiver and a unique number set by the unique number setter are generated as transmission data and transmitted through the first transceiver. A sub transceiver comprising a first controller for controlling; And A data input unit for inputting a unique number and call data of the sub transceiver to call the sub transceiver, a second GPS receiver for receiving signals transmitted from three or more satellites and outputting current location information, and the sub A second transceiver for receiving a high frequency signal transmitted from a transceiver and transmitting a call signal of the sub transceiver, a display unit for indicating a position of the sub transceiver, and call data input from the data input unit; The call signal is transmitted through a second transceiver, and the DGPS correction operation is performed using the current position information of the sub transceiver apparatus received through the second transceiver and the current position information obtained through the second GPS receiver to perform a DGPS correction operation. Second cone which displays the position on the display part with error range within 1m By a short-range precision position detection device, characterized in that with a main transmission and reception apparatus provided with a roller. A first GPS receiver for receiving signals transmitted from three or more satellites and outputting current location information, a unique number setting unit for setting a unique number, and a first transmission / reception for transmitting transmission data and receiving a high frequency signal And a call signal and position information through the first transceiver and the DGPS correction operation using the current position information and the received position information received by the first GPS receiver to accurately correct the current position within 1 m. A sub transmission / reception device having a first controller for calculating and generating the calculated precision position information and the unique code as transmission data and transmitting the same through the first transceiver; And A data input unit for inputting a unique number and call data of the sub transceiver to call the sub transceiver, a second GPS receiver for receiving signals transmitted from three or more satellites and outputting current location information, and the sub A second transceiver for receiving a high frequency signal transmitted from a transceiver and transmitting a call signal of the sub transceiver, a display unit for indicating a position of the sub transceiver, and call data input from the data input unit; A second controller for transmitting a call signal through a second transceiver, receiving precision position information of the sub transceiver, received through the second transceiver, and displaying the position of the sub transceiver within an error range of 1 m or less on the display unit; Grounds characterized by having a main transceiver with Fine position detecting device.