KR20060104140A - Apparatus and method for radio measurement of distance between two positions - Google Patents

Abstract

The present invention relates to a distance measuring device and method for wireless section that can measure the distance between two points up to several centimeters unit, and is portable and can be applied to various applications.

To this end, the present invention is made with a transmitting side distance measuring device 100 and a receiving side distance measuring device 200, the location request signal from the transmitting side distance measuring device 100 to the receiving side distance measuring device 200 Transmits the radio frequency and simultaneously operates the master frequency to count the clock for the master frequency, which is a pulse of the frequency, and receives the distance-measuring apparatus from the receiving side distance measuring apparatus 200 that has received the wireless transmission position request signal. When the location confirmation request answer signal is wirelessly transmitted, the transmitting side distance measuring device 100 receives the location request request answer signal and simultaneously operates the slave frequency to count the clock for the slave frequency that is the frequency pulse. In addition, the number of pulses counted by the clock values of the two frequencies is converted into a distance, and then summed and displayed.

Radio section, distance measurement, transmitter, receiver, frequency, clock

Description

Apparatus and method for radio measurement of distance between two positions}

1 is a block diagram showing a distance measuring device of the transmitting side of the distance measuring device of the wireless section of the present invention;

2 is a block diagram showing a receiving side distance measuring apparatus of the distance measuring apparatus of the wireless section of the present invention;

Figure 3 is a flow chart showing that the distance measuring device of the wireless section of the present invention is applied to measure the hole distance of golf.

<Code Description of Main Parts of Drawing>

100: distance measuring device

101,201: power supply unit 102,202: liquid crystal unit

103,203: keypad 104,204: memory

105,205: Identifier reader 106,206: Wireless data transceiver

107,207: master frequency generator 108,208: master frequency clock generator

109,209 slave frequency generator

110,210: clock generator for slave frequency

111,211: control unit

The present invention relates to a distance measuring device and method for wireless section that can measure the distance between two points up to several centimeters unit, and is portable and can be applied to various applications.

In general, as a method of measuring the distance between two points separated by a certain distance from a construction or civil engineering, there is a method of actually measuring using a tape measure, an eye-measurement method using a telescope, and a method using a GPS satellite. .

Of these, the measurement method using a tape measure is accurate, but it takes a lot of time, and it is difficult to measure. In the case of the observation method using a telescope, the accuracy is greatly reduced. There was a problem that the measuring equipment is required.

In addition, the distance measuring method between the two points described above is applicable to various fields, such as measuring the distance from the golfer's location to the hole cup, or measuring the distance of the mountain climber who is moving based on a specific location when climbing the mountain.

As a result, there is a need for a distance measuring device and a distance measuring method between two new points that solve the problems of the measuring method described above.

The present invention is to solve the problems of the prior art, the purpose of the present invention is to carry a low-cost wireless distance measuring device capable of measuring up to several centimeters, which is a very precise range in the distance measurement between two points as well as portable In addition, the purpose of the present invention is to provide a distance measuring device and method for providing a low-cost, high-efficiency device that can be applied to various applications such as distance between holes of golf, distance to a specific point when climbing, as well as construction and civil engineering.

Hereinafter, with reference to the accompanying drawings, the configuration and operation of the embodiment of the present invention will be described in detail.

1 is a block diagram showing a transmitter-side distance measuring apparatus of the wireless section distance measuring apparatus of the present invention, Figure 2 is a block diagram showing a receiving side distance measuring apparatus of the wireless section distance measuring apparatus of the present invention.

As shown, the distance measuring apparatus of the wireless section of the present invention, when the receiving side identification factor ID among the data included in the received positioning request signal is the same as the identification factor ID representing the location request request In order to measure the distance between the receiving side distance measuring device 200 and the receiving side distance measuring device 200 where the current location is transmitted, the location requesting response signal included in the signal. Generates a positioning request signal, wirelessly transmits the generated positioning request signal to the receiving side ranging apparatus, starts a master frequency and a clock for the master frequency, and answers the positioning request from the receiving side ranging apparatus. When the signal is wirelessly received, the slave frequency and the clock for the slave frequency are started, and the start is received at the time when the positioning request reply signal is received. A clock for the master frequency corresponding to the amplitude of the master frequency is calculated and converted into a first distance interval, and the clocks for the slave frequency at a matching amplitude are compared by comparing the amplitudes of the started master frequency and the slave frequency. And converting the distance to the second distance distance, and then adding the converted first distance distance and the second distance distance to display the measured distance with the receiving distance measuring device (100). )

Here, the transmitter-side distance measuring apparatus 100 includes a power supply unit 101, a liquid crystal unit 102, a keypad unit 103 having various key buttons necessary for requesting distance measurement, and an amplitude of a master frequency. The clock value for the slave frequency corresponding to the point in time at which the amplitude values of the first frequency, the master frequency, and the slave frequency are converted into the first distance interval, and the clock value for the frequency corresponds to the second distance. A memory unit 104 in which data such as second distance data, which are converted into intervals, and data such as a transmitter side identifier used as its own identifier and at least one receiver side identifier, and the like are received; An identification factor reader (105) for reading each identification factor included in the apparatus, a wireless data transmission / reception unit (106) acting as an interface for wirelessly transmitting and receiving data between the two, and generating a master frequency. A master frequency generator 107, a master frequency clock generator 108 for generating a clock for the master frequency, a slave frequency generator 109 for generating a slave frequency, and a slab for generating a clock for the slave frequency Eve frequency clock generator 110, and when the distance measurement is requested from the keypad 103, the transmitter side identifier stored in the memory unit 104 and the corresponding receiving side identifier for distance measurement is collected and located Generates a confirmation request signal, wirelessly transmits the generated location request signal to the receiving distance measuring device, and simultaneously controls the master frequency generator 107 and the master frequency clock generator 108 to control the master frequency and the master. Starting the clock for the frequency, when the positioning request response signal from the receiving side distance measuring device 200 is received wirelessly the slave frequency After starting the clock for the slave frequency and the slave frequency by controlling the water generator 109 and the clock generator 110 for the slave frequency, the amplitude of the started master frequency at the time when the positioning request reply signal is received. Extracts first distance data corresponding to the clock value calculated by matching the clock value for the master frequency corresponding to the memory unit 104 and compares the amplitudes of the started master frequency and the slave frequency. Extract the second distance data corresponding to the clock value calculated by matching the clock value for the slave frequency at the same amplitude with the memory unit 104, and then extract the first distance distance and the first extracted distance distance data. The control unit 111 controls the display unit 110 to add the secondary distance intervals to display the summed measurement distance on the liquid crystal unit 102.

In addition, the receiving side distance measuring device 200, the power supply unit 201, the wireless data transmission and reception unit 206 which serves as an interface to enable the transmission and reception of data wirelessly between both sides, and the received position request signal An identification factor reader 105 for reading each identification factor included therein and a control unit 211 for controlling the location request response signal to be transmitted to the transmission side identification factor included in the location request signal.

The wireless data transceiver 106 of the transmitting side distance measuring device 100 includes a modulation and demodulation unit, a receiver, an amplifier, a wireless antenna, and the like so as to carry out the modulation and carrier wave of the data to be transmitted wirelessly. Each of the same modulation and demodulation unit, receiver, amplifier, and radio antenna are well-known techniques, so further description thereof will be omitted. In addition, the above-described configuration is equally applied to the wireless data transmission / reception unit 206 provided in the reception side distance measuring apparatus 200 described below.

Master frequency clock (pulse / sec) Pulse width (sec) Measuring distance (m) 10,000 0.0001 30000 20,000 0.00005 15000 30,000 3.33333E-05 10000 40,000 0.000025 7500 50,000 0.00002 6000 60,000 1.66667E-05 5000 70,000 1.42857E-05 4285.714286 80,000 0.0000125 3750 90,000 1.11111E-05 3333.333333

Clock (pulse) for slave frequency Pulse total time Measuring distance (cm) Values corresponding to clocks for each master frequency in Table 1 1 second-(clock for master frequency) (Measurement distance of the master frequency clock) / (clock for the slave frequency)

L = L1 + L2

L1 = {(C / Cm) ㅧ (nPm-nPd)}

L2 = [{(C / Cm / Cs} ㅧ nPs]

∴ L = {(C / Cm) ㅧ (nPm-nPd)} + [{(C / Cm / Cs} ㅧ nPs]

Where L is the measured distance, L1 is the distance calculation value of the master frequency, L2 is the distance calculation value of the slave frequency, C is the propagation speed (300,000 Km), Cm is the clock frequency for the master frequency / 1 second Where Cs is the clock for the slave frequency / (1 second-clock for the master frequency), nPS is the number of pulses until the clock for the master frequency and the clock for the slave frequency are synchronized, and nPm is the Ti of the clock for the master frequency. NPd is the number of master frequency pulses counted during the delay time of the receiver, and Ti is the interrupt time of the clock for the master frequency according to the received data of the clock for the master frequency.

Table 1 shows measurement distances according to pulse widths of the master frequencies oscillated by the master frequency generator 107 corresponding to the clocks of the master frequencies oscillated by the clock generator 108 for the master frequency.

As described, the user may select and use the oscillation master frequency and the clock for the master frequency according to the length of the distance to be measured.

In addition, Table 2 shows the measurement distance of one master frequency clock corresponding to the limit value in the clock value of the master frequency.

Referring to these tables and equations, when the distance to be measured is about 10,000 m, the frequency of the oscillating master frequency (clock for the master frequency) is 40,000 Hz, one pulse having a pulse width of 25 μsec, and the slave frequency. The pulse of is 10,000 pulses, and when a pulse width of 0.999975sec is applied, one pulse has a pulse width of 99.9975μsec, and the master frequency calculates 3 × 10 ⁴ , in meters (m) within a distance of about 7,500m. The distance can be measured, and the slab frequency can be measured in centimeters (cm) or less by calculating 1 × 10 ⁴ so that the accurate distance between two points can be measured.

In addition, a half duplex method is used as a communication type between the transmitter-side distance measuring device 100 and the receiver-side distance measuring device 200, and the frequency range can be selected according to the application characteristics of the device. Programmable and preferably about 12.5khz may be used.

The data transmission / reception rate of the wireless section can be selectively used 1200bps or 2400bps, wherein the stability of the frequency has a stability of +/- 2.5ppm

In addition, to fix the frequency, the PLL frequency is 19.6608MHz, the intermediate frequency is 307.5kHz, the response frequency is defined as 600 ~ 1200Hz, and the communication data type is asynchronous.

In addition, the wireless transmission output of the transmitter-side distance measuring device 100 can be used at a distance of about 400m with a small output of 9.5-10 dBm, and the modulation scheme is frequency shifted modulation (FSK).

In addition, the PLL lock time of the transmitter-side distance measuring device 100 is less than 5msec, the current consumption required when transmitting is 38mA, the power consumption of the receiver-side distance measuring device 200 is 28mA and the sensitivity is less than -120dBm. Apply as low as -40dB.

In addition, the receiving side distance measuring device 200 also includes a liquid crystal unit 202 and a receiving side distance measuring device 200 so as to measure the distance between various other distance measuring devices including the transmitting side distance measuring device 100. A keypad unit 203 including various key buttons necessary for requesting distance measurement, a memory unit 204 storing data identical to data stored in the memory unit 104 of the transmitter-side distance measuring apparatus 100, and Identification factor reader 105, a master frequency generator 207 for generating a master frequency, a master frequency clock generator 208 for generating a clock for the master frequency, and a slave frequency generator for generating a slave frequency ( 209 and a slave frequency clock generator 210 for generating a clock for the slave frequency.

3 illustrates the operation of the present invention using a flow chart showing an embodiment in which the distance measuring device of the wireless section of the present invention is applied to the hole distance measurement of golf.

First, in a state in which power is supplied to the transmitter-side distance measuring apparatus 100, a hole to be measured is selected by operating a key button constituting the keypad 103 of the transmitter-side distance measuring apparatus 100 (S10). Here, the key button is provided with a hole selection key (direction key), and comprises a request key for requesting distance measurement of the selected hole.

The control unit 111 extracts, from the memory unit 104, a receiving side identifier indicating the corresponding receiving side distance measuring device 200 installed in the selected hall and a transmitting side identifier indicating the transmitting side distance measuring device which is its own. The reception side identification factor and the transmission side identification factor are collected to generate a location request signal (S20). Here, the sizes of the receiving side identifier and the transmitting side identifier are about 2 bytes each.

The control unit 111 inputs the generated location request signal to the wireless data transmission / reception unit 106, and the wireless data transmission / reception unit 106 processes the input location request signal to be wirelessly transmitted and then wireless transmission (S30). At the same time, the master frequency generator 107 and the master frequency clock generator 108 are controlled to start the master frequency and the clock for the master frequency (S40).

In addition, the location request signal is transmitted wirelessly is received (S50) by the various receiving side distance measuring apparatus 200 provided for each hole.

The positioning request signal received through the wireless data transmitter / receiver 206 of the various receiving side distance measuring apparatus 200 is processed to be read by the identifier reader 205 and then input to the identifier reader 205.

Under the control of the control unit 211 provided in the receiving side distance measuring device 200, the identifier reader 205 determines whether the receiving side identifier included in the inputted position request signal and the receiving side identifier owned by the same are the same. If it is not the same by checking (S60), the receiving distance measuring apparatus 200 waits until another positioning request signal is received (S61), and the receiving side identifier and the self included in the received positioning request signal are themselves. If the received receiving side identifiers are the same, the transmitting side identifiers included in the positioning request signal are extracted, and a positioning request reply signal including the extracted transmitting side identifiers is generated (S70).

The control unit 211 provided in the receiving side distance measuring apparatus 200 wirelessly transmits the generated position request response signal.

The transmitter 100 measures the location request response signal transmitted wirelessly through the wireless data transmission / reception unit 106 (S90), processes the signal to be read by the identifier reader 105, and then identifies the reader. Enter (105).

The control unit 111 provided in the transmitter-side distance measuring device 100 controls the identifier reader 105 to determine whether the transmitter-side identifier included in the received location request response signal is identical to the receiver-side identifier held by the transmitter. Check (S100). Here, since the identification of the identification performed by the transmission-side distance measuring device 100 can be used in various places in the golf course, the transmission-side distance measuring device 100 requesting distance measurement may be used. To identify them.

The control unit 111 waits until another location request response signal is received if the sender ID included in the received location request reply signal and the sender ID held by the sender distance measuring device are not the same (S61). If the identification factors are the same, the slave frequency generator 109 and the slave frequency clock generator 110 are controlled to start the master frequency and the clock for the master frequency (S110).

Thereafter, the control unit 111 of the distance measuring apparatus 100 transmits the master frequency generator 107 and the master frequency clock value corresponding to the amplitude of the master frequency started at the time when the positioning request response signal is received. It receives the input through the clock generator 108, and corresponds to the clock value by matching the clock value for the master frequency with the input 104, the unit of the meter between two points located within a distance of about 7,500m The first distance interval data, which is a distance section measurement value, is extracted (S120).

Thereafter, the control unit 111 of the distance measuring apparatus 100 receives the master frequency and the slave frequency started from the master frequency generator 107 and the slave frequency generator 109, respectively, and input the input master frequency and After comparing the amplitudes of the slave frequencies and acquiring the clock values for the slave frequencies at the matching amplitudes, the clock values for the slave frequencies are matched with the memory unit 104 to correspond to the clock values. Second distance data, which is a measured distance section having a centimeter unit, is extracted from the distance between two points (S130).

The controller 111 adds the extracted first distance data and the second distance data, and then controls it to be displayed on the liquid crystal part 102 (S140) so that the golfer accurately shots the golf ball to the hole. Make the distance aware.

In addition, the reception side distance measuring apparatus 200 of the present invention includes a liquid crystal unit 202, a keypad unit 203, a memory unit 204, an identifier reader 205, a master frequency generator 207, and a master frequency clock. Another distance measuring device including the transmitter-side distance measuring device 100 in the receiving side distance measuring device 200, including the generator 208, the slave frequency generator 209, and the clock frequency generator 210 for the slave frequency. Provides the ability to measure the distance between This may not only provide the golfer with an accurate measurement distance between the hole, but also as another example, when the receiving side distance measuring device 200 of the present invention is installed at each specific point of climbing, the distressed climber transmits the transmitting side. This is because it is possible to guide the ascent to a faster hiking trail because the distance from the point where it is located to the other hiking point where the various receiving side distance measuring devices 200 are installed can be determined without having to carry the distance measuring device 200.

In addition, the distance measuring device consisting of the transmitting side distance measuring device 100 and the receiving side distance measuring device 200 can be selected and changed to the transmitting side distance measuring device and the receiving side distance measuring device according to the purpose. The measuring device is programmed to select either the sending distance measuring device or the receiving distance measuring device. This is to provide a user to use the distance measuring device possessed by the user according to the wide application range.

As described above, the present invention can not only purchase a wireless distance measuring device that can measure up to several centimeters, which is a very precise range for measuring the distance between two points, but also is easy to carry, and its use is also easy to use in construction and civil engineering. In addition, it has the effect of providing a low-cost and high-efficiency device that is applied to a variety of applications, such as the distance between holes of golf, the distance to a specific point when climbing.

Claims (7)

If the receiving side identifier (ID) is the same as the identification factor (ID) indicating itself among the data included in the received positioning request signal, the response to the positioning request with the transmitting side identification factor (ID) included in the positioning request signal Receiving side distance measuring device 200 for transmitting a signal, A location request signal is generated to measure a distance from the current location distance measuring device 200 at the current location, and the generated location request signal is wirelessly transmitted to the distance measurement device at the same time as the master frequency. And starting a clock for a master frequency, starting a slave frequency and a clock for a slave frequency when the positioning request answer signal is wirelessly received from the receiving side distance measuring device, and then receiving the positioning request answer signal. Calculates a clock for a master frequency corresponding to the amplitude of the started master frequency to convert to a first distance interval, compares the amplitudes of the started master frequency and the slave frequency, and compares the amplitudes of the slaves at a matching amplitude; After calculating the clock for the frequency and converting it to the second distance, the distance between the converted first distance Distance measuring apparatus for a wireless section, characterized in that consisting of a distance measuring device (100) for displaying the measurement distance with the receiving distance measuring apparatus by adding the interval and the second distance interval. The method of claim 1, The transmitting side distance measuring device 100, The power supply unit 101, The liquid crystal unit 102, A keypad 103 having various key buttons necessary for requesting distance measurement; When the clock value for the frequency corresponding to the amplitude of the master frequency is the first distance distance data converted into the first distance interval, the clock value for the slave frequency corresponding to the point at which the amplitude of the master frequency and the slave frequency match A memory unit 104 in which data such as second-order distance data converted into second-order distance intervals and data such as a transmitter side identifier used as its own identifier and at least one receiver side identifier are stored; An identification factor reader 105 for reading each identification factor included in the received location request response signal; A wireless data transmitter / receiver 106 that serves as an interface to allow data to be transmitted and received wirelessly between both parties; A master frequency generator 107 for generating a master frequency, A clock generator 108 for generating a clock for the master frequency, A slave frequency generator 109 for generating a slave frequency, Slave frequency clock generator 110 for generating a clock for the slave frequency, When the distance measurement is requested from the keypad 103, the transmitter determines the location request signal stored in the memory unit 104 and the corresponding destination ID requested for the distance measurement to generate a location request signal. Wirelessly transmits a positioning request signal to the receiving side distance measuring device and simultaneously controls the master frequency generator 107 and the master frequency clock generator 108 to start the master frequency and the clocks for the master frequency, and the receiving side When the positioning request response signal is wirelessly received from the distance measuring device 200, the slave frequency generator 109 and the slave frequency clock generator 110 are controlled to start the slave frequency and the slave frequency clock. Then, the clock value for the master frequency corresponding to the amplitude of the started master frequency at the time when the positioning request reply signal is received Matching with the memory unit 104 extracts the first distance data corresponding to the clock value, and compares each amplitude of the started master frequency and the slave frequency for the slave frequency at the matched amplitude After matching the clock value with the memory unit 104 to extract the second distance data corresponding to the clock value, the extracted first distance distance and the second distance distance are summed to add the measured distance. Distance measuring device of the wireless section, characterized in that consisting of a control unit 111 for controlling to be displayed on the liquid crystal unit (102). The method according to claim 1 or 2, The receiving side distance measuring device 200, A power supply unit 201, A wireless data transmitter / receiver 206 serving as an interface to allow data to be transmitted and received wirelessly between both parties; An identification factor reader 205 for reading each identification factor included in the received positioning request signal; And a control unit (211) for controlling the transmission of the location request response signal to the transmitting side identification factor included in the location request signal. The method of claim 3, wherein The receiving side distance measuring device 200, The liquid crystal unit 202, A keypad unit 203 equipped with various key buttons necessary for requesting distance measurement; A memory unit 204 storing the same data as the data stored in the memory unit 104 of the distance measuring apparatus 100; Identification reader 105, A master frequency generator 207 for generating a master frequency, A master frequency clock generator 208 for generating a master frequency clock; A slave frequency generator 209 for generating a slave frequency, Including the slave frequency clock generator 210 for generating a clock for the slave frequency, the receiving distance measuring device 200 also measures the distance from the other distance measuring device including the transmitting distance measuring device 100. Distance measuring device of the wireless section characterized in that it can measure. Selecting a corresponding hole to be distanced by operating a keypad provided in the transmitter-side distance measuring device to which power is applied (S10); (S20) generating a location request signal by combining a reception side identifier representing the corresponding reception side distance measuring device installed in the selected hall, and a transmission side identifier representing the transmission side distance measuring device; Wirelessly transmitting the generated location request signal (S30); Starting the master frequency and the clock for the master frequency at the same time as wirelessly transmitting the positioning request signal (S40); Receiving, by the receiving side distance measuring device, the location request signal transmitted (S50); Checking whether the receiving side identification factor included in the received positioning request signal and the receiving side identification factor held by the receiving side distance measuring device are the same (S60); If the receiving side identification factor included in the received positioning request signal and the receiving side identification factor held by the receiving side distance measuring device are the same, the transmitting side identification factor included in the positioning request signal is extracted, and the extracted transmitting side identification Generating a location request response signal including a factor (S70); Wirelessly transmitting the generated location request response signal (S80); (S90) receiving, by the distance measuring apparatus, a transmitting side distance measurement apparatus, wherein the transmitted position confirmation request response signal is transmitted; Confirming whether a transmitting side identifier included in the received position request response signal and a receiving side identification factor held by the transmitting side distance measuring apparatus are the same (S100); Starting the slave frequency and the clock for the slave frequency when the transmitting side identifier included in the received position request response signal and the transmitting side identifier held by the transmitting side distance measuring apparatus are the same (S110); Extracting the first distance data corresponding to the clock value by matching a clock value for the master frequency corresponding to the amplitude of the started master frequency with a memory unit at the time when the position request response signal is received (S120); )Wow, Comparing the amplitudes of the started master frequency and the slave frequency to match clock values for the slave frequency at a matching amplitude with a memory unit and extracting second distance data corresponding to the corresponding clock values; S130), And summing the extracted first distance interval and the second distance interval and displaying the calculated measurement distance on the liquid crystal unit (S140). The method of claim 5, In step S60 of checking whether the receiving side identification factor included in the received positioning request signal and the receiving side identification factor held by the receiving side distance measuring device are the same, the receiving side identification factor included in the received positioning request signal. And waiting until another positioning request signal is received if the receiving side identification factors held by the receiving side distance measuring device are not the same (S61), In step S100 of checking whether the transmitting side identifier included in the received position request response signal and the receiving side identifier held by the transmitting side distance measuring device are the same, the transmitting side included in the received position request response signal And a step (S61) of waiting until another location request response signal is received when the identification factor and the transmission identification factor held by the transmission side distance measuring device are not the same. The method of claim 5, The distance measuring device consisting of the transmitting side distance measuring device 100 and the receiving side distance measuring device 200 may be selected and changed into a transmitting side distance measuring device and a receiving side distance measuring device according to a purpose. And the apparatus is programmed to select a sending range measuring device or a receiving range measuring device.

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