KR101661874B1 - Display system - Google Patents

Abstract

And also to provide a display system in which the movement trajectory of a mobile station moving in a three-dimensional space can be easily understood from a monitor screen.
It is possible to display a terrain such as an image C of a building, an image H of a hill, an image S of a slope, etc. on the map display portion M of the monitor unit in the base station by using the three-dimensional electronic map, The horizontal 0 wire 204 and the vertical 0 wire 205, the azimuth display 206, the base station graphic 211, and the antenna direction line 212 are superimposed and displayed. Thus, the position of the mobile station in the current space and the position of the base station, the movement locus of the mobile station on the topographic map, the orientation of the topographic map, and the like can be easily recognized simply by viewing the map display unit M of the monitor unit.

Description

Display system {DISPLAY SYSTEM}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display system in a remote control monitoring system using wireless transmission, and more particularly to a display system for tracking a moving object and displaying a moving locus.

As an example of a remote control monitoring system using wireless transmission, a micro receiving base station system including fixed wireless transmission between base stations by the FPU method is known.

An example of the microwave receiving base station system will be described with reference to Fig.

The field pick-up unit (FPU) is an abbreviation of field pick-up unit.

8 shows an example of a microwave receiving base station system in which a work is transferred from the transmission point A11 and the transmission point B14 to the main office 13. In this system, It is assumed that the distance A11 is relatively far from the main office 13 and the other transmission point B14 is relatively close to the main office 13. [

Then, the transmission point A11 is transmitted from a long distance, and the material is wirelessly relayed to the head office 13 via the base station 12. [ On the other hand, since the transmission point B14 is close to the center, the material is wirelessly transmitted directly to the head office 13.

Here, the term " material " means a signal including audio and data in a video image for television, and is also called a broadcast material. Thus, in this case, the head office means the head office of a television broadcasting station.

First, the transmission from the transmission point A11 will be described. In this case, the transmission unit 11-1 of the transmission point A11 converts the material into a microwave signal capable of wireless transmission, And transmits it as a radio wave.

At this time, the transmission unit 11-1 encodes an SDI (Serial Digital Interface) signal into a TS (Transport Stream) signal, which is a frame format of a fixed-length packet format used for transmission of the FPU, And thereafter, converts the frequency of the microwave into a microwave and supplies the frequency to the antenna 11-2.

When the radio wave is transmitted from the antenna 11-2 in this way, the radio wave is received by the rotating receiving antenna apparatus 12-1 provided in the base station 12, and the received signal is inputted to the receiving unit 12-2.

At this time, the receiver 12-2 has a function of frequency-converting a microwave band signal into an intermediate frequency signal, demodulating the TS signal into a TS signal, and then decoding it into an SDI signal. Here, -2), it suffices to have a function corresponding to the process up to conversion to a TS signal at least having no signal deterioration.

The TS signal output from the receiving unit 12-2 is supplied to the transmitting unit 12-3 and transmitted as a radio wave from the fixed antenna 12-6. Here, similarly to the receiving unit 12-2, in the case of the transmitting unit 12-3 in the base station 12, it suffices to have at least a function corresponding to the process of converting the TS signal into a microwave.

The radio wave transmitted from the fixed antenna 12-6 is received by the fixed antenna 13-1 of the main office 13 and supplied to the receiving unit 13-2 as a received signal.

Thus, the receiving unit 13-2 performs a desired process on the received signal and inputs it to the decoding unit 13-5, and the decoding unit 13-5 decodes the inputted signal into the SDI signal.

Therefore, the decoded SDI signal is supplied from the decoding unit 13-5 to the main line, and as a result, transfer of the material from the transmission point A11 is obtained.

Next, the transmission from the transmission point B14 will be described.

In this case, the transmitting section 14-1 of the transmission point B14 converts the material into a microwave signal capable of wireless transmission and transmits it as an electric wave from the antenna 14-2.

At this time, the transmission section 14-1 also has a function of encoding the SDI signal into a TS signal, modulating it into an intermediate frequency signal, frequency-converting the signal into a microwave, and supplying it to the antenna 14-2.

The radio wave transmitted from the antenna 14-2 of the transmission point B14 is directly received by the rotation receiving antenna apparatus 13-3 of the head office 13 and is received by the receiving section 13-4 and the decoding section 13 -5), and is supplied to the main line. As a result, the transmission of the material from the transmission point B14 is obtained.

In this micro-receiver base station system, first, it is an important matter how efficiently the radio waves from the transmission point A11 can be received by the base station 12. Next, It is an important matter how efficiently the radio waves from the base station 13 can be received.

That is, in this case, the base station 12 must change the direction of the receiving antenna by the position of the transmitting point A11. In the main office 13, the direction of the receiving antenna depends on the position of the transmitting point B14 Must be changed.

First, the case of the base station 12 and the head office 13 will be described.

In this case, the base station 12 uses the rotating receiving antenna apparatus 12-1 and the head office 13 has the operating terminal 13-10, whereby the direction of the receiving antenna of the base station 12 is the head office (Not shown).

First, the operating terminal 13-10 of the head office 13 is capable of transmitting a desired control packet to the network.

Thus, the control packet transmitted from the operating terminal 13-10 is received from the network by the control terminal 13-9 and converted into a serial signal.

It is a matter of course that a plurality of operation terminals and a plurality of control terminal stations are connected to the network at this time so that specific transmission and reception can be performed by the respective device IDs.

The serial signal converted by the control terminal station 13-9 is also modulated into, for example, an analog signal by the modem unit 13-8 and transmitted toward the base station 12 via the network.

The transmitted analog signal is received by the modulation / demodulation section 12-5 of the base station 12 from the network, demodulated into a serial signal, and then supplied to the controlled terminal 12-4 as a control signal.

Thus, the controlled terminal station 12-4 decodes the input control signal and controls the rotary receiving antenna apparatus 12-1.

The monitored information such as the angle of the rotating receiving antenna apparatus 12-1 thus controlled is supplied as a monitoring signal to the controlled terminal station 12-4 where it is converted into a serial signal and transmitted to the modulation and demodulation section 12-5 Where it modulates, for example, an analog signal, and transmits it from the Internet toward the head office 13.

The signal received by the modem unit 13-8 of the head office 13 from the Internet is demodulated into a serial signal and supplied to the control terminal 13-9.

Thus, the control terminal 13-9 decrypts the received serial signal, creates a monitoring packet, transmits it to the network, and causes it to be received by the operating terminal 13-10.

Thus, the operating terminal 13-10 receives the monitoring packet and displays it as information on the terminal.

As a result, the direction of the receiving antenna of the base station 12 can be precisely remotely adjusted from the head office 13 , The direction of the reception antenna of the base station 12 can be accurately directed to the transmission point A11.

Next, the case of the transmission point B14 and the main office 13 will be described.

In this case, the main receiving unit 13 can be controlled by the operating terminal 13-9 using the rotating receiving antenna unit 13-3 so that the direction of the receiving antenna of the main unit 13 can be controlled.

More specifically, a signal transmission path from the operation terminal 13-10 to the control apparatus of the rotating receiving antenna apparatus 13-3 via the control terminal station 13-9 is used.

As a result, control and monitoring of devices such as the rotary receiving antenna apparatus 13-3 and the receiving unit 13-4 of the head office 13 can be performed by the operation terminal 13-9, The direction of the reception antenna of the main office 13 can be accurately directed to the transmission point B14.

In this micro-reception base station system, the reception level in the reception unit 12-2 provided in the base station 12, the transmission level in the transmission unit 12-3, the transmission / reception channel (frequency band), the modulation method, Transmission output, and decoding method, and also, for example, selection of a contact of a signal converter or signal input / output selection of a signal multiplexer / demultiplexer is also performed by the control terminal 13-9, Control and monitoring can be made in the same manner as in the case of the rotating receiving antenna apparatus 12-1 by transmitting a series of signals from the terminal 12-5 to the control apparatuses of the respective units.

In this micro-receiver base station system, in order to transmit more detailed information for adjusting the direction of the receiving antenna, the receiving frequency and the modulation method in the receiving unit 12-2 and the receiving unit 13-4 A reception level, a margin level, a bit error rate (BER), a modulation error ratio (MER), a delay profile, and a constellation Data is superimposed on the above-described TS signal to be transferred to the head office 13, separated by the information generating section 13-6, edited by the information editing section 13-7, On the display screen.

Incidentally, in the case of the above-described micro reception base station system, there is an example in which the position of a transmission point is acquired by a GPS (Global Positioning System) and used for control.

FIG. 6 shows an example of a micro-reception base station system equipped with GPS. In FIG. 6, reference numeral 601 denotes a mobile station, and reference numeral 611 denotes a base station.

First of all, the mobile station 601 uses a helicopter as a moving means to attach a material record generating section 602, a position information acquiring / converting section 603, a transmitting section 604, and a transmitting antenna device 605 .

Next, the base station 611 includes a rotation receiving antenna device 612, a receiving unit 613, a material processing unit 614, and a position information processing unit 615. For example, the base station 611 receives a radio wave transmitted from a mobile station Such as a high-rise building suitable for a building.

First, in the mobile station 601, a video / audio signal serving as a material is generated by the material record generation unit 602 and input to the transmission unit 604.

On the other hand, the position information signal is input from the position information acquisition / conversion section 603 to the transmission section 604. [

Here, for example, a video camera is used as the material record generating unit 602, and a terminal of the above-described GPS is provided in the position information acquiring and converting unit 603. [

Here, if the transmitting unit for receiving the video and audio signal and the transmitting unit for receiving the position information are the same, it is also possible to transmit them as radio waves including both signals.

This method includes, for example, a method of modulating positional information as a serial signal into a voice signal and transmitting the same as one of a plurality of voice inputs having a plurality of transmitting units.

However, also in this case, depending on the configuration, the transmitting unit for receiving the video and audio signal need not be the same as the transmitting unit for receiving the position information. This means that the radio wave including the video / audio signal and the radio wave including the position information do not necessarily need the same whole file.

That is, in this case, the radio wave received by the rotating receiving antenna device 612 of the base station 611 may include at least one video / audio signal.

Thus, the mobile station 601 transmits at least radio waves including video and audio signals from the transmitting antenna device 605 to the base station 611. [

Here, when the position information signal is not included in the radio wave toward the receiving base station 211, only the position information signal is transmitted by radio waves.

In addition, in the case of the radio wave transmitting only the position information signal, it is not limited to the SHF frequency band which is usually used in such a micro reception base station system, and may be wireless such as VHF or UHF.

In the base station 611, a radio wave including the video / audio signal is received by the rotation receiving antenna device 612.

The received signal, that is, the received signal, is transmitted to the receiving unit 613, and is returned to, for example, a TS signal and an SDI signal and is transmitted to the material processing unit 614.

At this time, the receiving section 613 detects the level of the received signal received by the rotating receiving antenna device 612, and inputs it to the position information processing section 615.

When the received radio wave includes position information, the position information processing unit 615 also inputs the position information.

On the other hand, when the position information signal is transmitted by another radio wave, the position information may be separately transmitted from the receiving means to the material processing unit 614. [

The position information processing unit 615 acquires the current position of the transmitting mobile unit 601 and the reception level of the transmitted radio wave and outputs the received position information to the position information processing unit 615 on the display means (for example, a monitor screen) .

This has the advantage that the current situation can be provided as information to the user of the system.

At this time, as for the position information in particular, it is effective to display the electronic map on the display surface of the monitor section and display the spot there.

Thus, in this system, as shown in the figure, an electronic map is provided in the position information processing unit 615 so that an electronic map is displayed on the display surface of the monitor unit, and the electronic map of the mobile station 601 The current point is displayed.

FIG. 7 shows an example of the display screen at this time. At this time, an electronic map 700 is displayed on the map display surface M of the monitor section.

In this electronic map 700, the receiving base station point 701, the transmitting moving body point 702, the receiving antenna direction line 703, and the moving locus 704 of the mobile station are displayed as shown in the figure.

At this time, the electronic map is a two-dimensional map, and therefore, the electronic map 700 is displayed on the display surface of the monitor unit as a diagram viewed from above.

Therefore, according to this system, the locus of the mobile station 601 can be recognized as if it is on the map.

In this example, not only the electronic map 700 is displayed on the display surface of the monitor section but also the antenna angle display section A indicating the angle of the reception antenna and the profile display section P displaying the terrain between the transmission / And the like.

At this time, the profile display section P displays the topographic profile GP between the transmitting and receiving sections, and a straight line 703P connecting the mobile station and the base station is also displayed.

Here, as a publicly known example related to this prior art, for example, the disclosure of Patent Document 1 can be cited.

(Prior art document)

(Patent Literature)

Patent Document 1: Japanese Patent Laid-Open No. 2007-134915

SUMMARY OF THE INVENTION In view of the above circumstances, it is an object of the present invention to provide a method and apparatus for efficiently and efficiently receiving a moving object including a movement locus of a moving body, And the use of three - dimensional electronic maps.

In order to solve the above problems, the present invention provides a base station having a mobile station capable of detecting its own position and capable of transmitting position information, and a monitor means capable of displaying a three-dimensional electronic map, The position of the mobile station and the display of the movement locus are sequentially displayed on the three-dimensional electronic map displayed on the display surface of the monitor means by receiving the radio wave transmitted from the mobile station, sequentially acquiring the position information, A position information processing unit is provided in the base station and the reception level of the radio wave when the radio wave transmitted from the mobile station is received by the base station is acquired by the position information processing unit, An actual reception level setting means for setting the reception level as a reception level, On the basis of the antenna gain, the transmission frequency, the transmission output, and the distance to the base station calculated by the position information at this point in time, in the mobile station, A theoretical level difference storage means for storing the difference between the actual reception level and the theoretical reception level as a theoretical level difference or a period during which the theoretical level difference is equal to or greater than a preset threshold And a logic level difference period storage means for storing the logical level difference period storage means as a logical level difference period, wherein at least one of the theoretical level difference and the logic level difference period stored by the storage means is provided on the display surface of the monitor means On the three-dimensional electronic map on which the video is outputted, the position of the mobile station and the movement locus Characterized in that one to the video output with the display.

In this case, when the moving locus of the mobile station is displayed on the display surface of the monitor means, the position information processing unit may change the display mode of the line indicating the moving locus in accordance with the detection result of the reception level, In this case, when the position information processing unit displays the moving locus of the mobile station, the position information processing unit displays the moving locus of the mobile station when the reception of the position information is stopped, A symbol mark indicating an interruption of reception is displayed at a position where the reception is stopped and then a symbol mark indicating the resumption of reception is displayed at the position where the reception is restored on the moving locus when the reception of the position information is restored It may be.

According to the present invention, it is possible to analyze and review a significant operation in a system in an opportunity to receive radio wave from a mobile station. It is possible to dramatically improve information provision and functionality to users as a system.

1 is a block diagram showing an example of an embodiment of a display system according to the present invention.
2 is an explanatory view showing a first example of a monitor display screen according to an embodiment of the present invention.
3 is an explanatory view showing a second example of the monitor display screen according to the embodiment of the present invention.
4 is an explanatory view showing a third example of the monitor display screen according to the embodiment of the present invention.
5 is an explanatory diagram of an information table in the embodiment of the present invention.
6 is a block diagram showing a display system according to the prior art.
7 is an explanatory view showing an example of a monitor display screen in the display system of the related art.
8 is a block diagram showing an example of a micro-reception base station system including fixed wireless transmission between base stations by the FPU method.

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

Fig. 1 shows an embodiment in which the display system according to the present invention is applied to a relay system based on the FPU system. The helicopter is provided with a work record creation unit 102 (602) and a position information acquisition conversion unit 103 601, 602 and 603, the transmission units 104 and 604 and the transmission antenna units 105 and 605 are mounted on the mobile station 101 and 601, respectively, and correspondingly, 613, 613, 614, 615, and 615 are provided in a place with a good prospect, such as the number of relay antennas, 112, 612, And the base station 111 (611) for credit.

Here, the numbers in parentheses indicate the numbers given to the same parts in the prior art shown in Fig. 6, and therefore, for example, the material record generation unit 102 generates, (602). The same is true for other numbers and configurations.

1, the radio wave of the microwave band having the video / audio signal and the positional information is transmitted from the transmitting antenna device 105 of the mobile station 101, and this is transmitted to the rotating receiving antenna apparatus ( 112).

As a result, the material is relayed from the mobile station 101 to the base station 111, and the material is supplied to the main line of the television broadcasting station from the base station 111 via the transmission line L. Therefore, also in this embodiment, Can be used as one of the program elements in television broadcasting, and it becomes possible to contribute to the creation of programs rich in variety by adding broadcast material by relaying.

Next, in this embodiment, the processing of the position information by the position information processing unit 115 will be described.

First, in this embodiment, the position information is transmitted as one of the voice signals in the signal received by the rotary receiving antenna device 112, as in the case of the related art.

The receiving unit 113 detects the positional information from one of the audio signals and supplies the detected positional information to the positional information processing unit 115. At this time, the receiving unit 113 acquires the positional information, And supplies it to the position information processing unit 115 in the same manner.

The reception level at this time is the electric field intensity level of the signal received by the rotary receiving antenna device 112, that is, the carrier level.

Therefore, in the case of this embodiment, both the position information and the reception level are supplied from the reception unit 113 to the position information processing unit 115. [

At this time, the position information processing unit 115 is mainly composed of a CPU operating with desired program software for three-dimensional image display, and in that a memory and a monitor unit storing an electronic map are provided, Information processing unit 615 of Fig.

However, in the position information processing unit 115, first, a three-dimensional electronic map is stored in the memory.

Corresponding to this, the CPU is loaded with program software for processing necessary for displaying a three-dimensional map on the monitor unit by the three-dimensional image data read out from the memory.

An input device such as a keyboard that functions as an input interface is provided in the position information processing unit 115 so that an instruction is given to the process by the position information processing unit 115. [

Here, as for the position information applied from the GPS of the mobile station 101, it is already described that data indicating the altitude is included in addition to the data indicating the position of the mobile station 101 on the surface of the earth.

The position information processing unit 115 sequentially calculates the position coordinates (latitude and longitude) and the altitude (elevation) of the mobile station 101 based on the positional information inputted from the receiving unit 113, sequentially stores them The position information processing unit 115 searches the three-dimensional electronic map stored in the memory based on the calculated position of the mobile station 101, and the position of the base station 111 is included in the three-dimensional electronic map Extracts the desired range and displays the three-dimensional image 200 shown in Fig. 2 on the map display section M of the monitor section, and displays it in the first display mode.

2, a cylindrical building (construction) is displayed as an image C, and at this time, an image H of a hill and a slope of a cliff, etc., Are also displayed together.

Thus, the position information processing unit 115 displays the mobile station graphic 201 at a point corresponding to the position of the mobile station 101 in the three-dimensional image 200 according to an instruction from the input device, 111, the base station graphic 211 is displayed.

Here, the two straight lines 211A and 211B extending in the right and left oblique directions below the base station graphic 211 are symbol marks representing the expectation of the base station 111 and are automatically given by the display processing set in advance in the program.

Next, a straight line extending from the base station graphic 211 to the mobile station graphic 201 is displayed to be the antenna direction line 212 of the rotation receiving antenna device 112. [

Then, the position of the mobile station 101 is plotted in a stereoscopic manner over a necessary movement range, and a result of the estimation is displayed on the monitor, the movement locus 203 is displayed.

Here, the necessary range of movement is a range of movement from the position of the mobile station 101 to the desired distance and backward position when the mobile station graphic 201 is displayed, but this can also be arbitrarily determined by an instruction from the input device.

In parallel with this display, the horizontal 0-conductor line (H0 line) 204 and the vertical 0-conductor line (V0 line) 205 by the broken line seen from the position of the base station 111 Dimensional image 200 in accordance with the instruction of the input device and displays the orientation display 206 indicated by the circular arrow in the direction of the three-dimensional image 200. [

Here, the orientation display 206 is displayed at a position that does not interfere with the display of other images, such as, for example, the upper right corner of the screen.

Therefore, if the monitor section of the position information processing section 115 is viewed at present, the map display section M has a topographic map based on hills or slopes.

Then, the building, the mobile station (helicopter), and the base station are displayed as images in the topographic map, and the flight path (movement trajectory of the mobile station) is also indicated by the curve for the mobile station at this time.

The map display section M also displays a horizontal 0-conductor line and a vertical 0-conductor line, and the topographic map also displays a bearing.

As a result, both the position information on the two-dimensional map and the terrain information on the transmission / reception point on the profile display are gathered as one piece of information. At this time, the altitude information of the flying course, Can be confirmed.

Therefore, in this first display mode, the current trajectory position of the mobile station 101, the installation position of the base station 111, the orientation of the mobile station 101 on the topographic map, the orientation of the topographic map, The position of the mobile station 101 with respect to the position of the mobile station 101 and the base station 111 and the position of the mobile station 101 with respect to the obstacle (an object in the air such as a high-rise building) and the terrain, The relationship can be grasped easily and in real time only by tilting the monitor on one side and can contribute to safe and reliable coverage of material by relay from the public mobile station.

The first display mode according to this embodiment has been described above. Hereinafter, the second display mode according to this embodiment will be described with reference to Fig. 3 as follows.

3, reference numeral 300 denotes a three-dimensional image, reference numeral 307 denotes an oblique circularity, and reference numeral 308 denotes an oblique circularity. In this case, an image C representing a building and an image H representing a hill, Are all the same as those in the first display mode of Fig.

For example, in the case of the three-dimensional image 300 in the second display mode, the sign is the same as in the case of the first display mode shown in Fig. 2 Thus, for example, the base station graphic 311 of FIG. 3 is the same as the base station graphic 211 of FIG. 2, and the mobile station graphic 301 of FIG. 3 is the same as the mobile station 201 of FIG.

3, the mobile station 101 mounted on the helicopter rotates an object (an object in the air such as a high-rise building) that becomes an obstacle as seen from the base station 111, As a result, the microwave propagation is unpredictable, and when the reception is stopped by the base station 111, the position of the mobile station 101 immediately before reception becomes impossible, that is, Is displayed as a symbol mark at the position where it has entered.

Next, the slant-less circularity 308 is a circular diagram 308 at the position when the mobile station 101 comes out from behind the image C and the reception is restored at the base station 111 after the reception at the base station 111 is stopped, As a symbol mark.

At this time, the position of the mobile station 101 is sequentially detected and stored by the GPS regardless of the communication state between the mobile station 101 and the base station 111. [

Therefore, with respect to the movement trajectory until the mobile station 101 moves from the position represented by the oblique circularity 307 to the position represented by the oblique circularity 308, thereafter, when the communication is restored, (101) to the base station (111).

Therefore, the movement locus at this time may be displayed as the movement locus 303X by the broken line as shown in the figure.

Therefore, in the second display mode, when reception from the mobile station 101 as a mobile transmission becomes impossible, the situation can be grasped and understood at a time in consideration of the terrain at this time .

At this time, also in the related art, in such a case, the situation regarding receivable / non-receivable can be displayed on the two-dimensional map.

However, in the prior art, in this case, as an information material necessary for examining a specific factor, information as an altitude value as additional information, information by reference to a point where it is impossible, and a terrain profile (terrain information between two designated points) And thus even if it is displayed, it takes a lot of time to verify whether it is receivable / not receivable.

On the other hand, in the second display mode, since the review material is integrated into one screen, it is possible to review the obstacle avoidance flight plan that the surrounding terrain information is added at the next relaying time.

Incidentally, in this embodiment, as shown in Fig. 1, both the position information and the reception level are supplied from the reception unit 113 to the position information processing unit 115. Fig.

Therefore, the display mode in the case of using both of the position information and the reception level will be described below with reference to Fig. 4 as the third display mode.

4, reference numeral 400 denotes a three-dimensional image. A three-dimensional image C representing a building at this time, a three-dimensional image H representing a hill and a three-dimensional image S representing a slope are all shown in the case of the second display mode .

The other points are the same as the case of the second display mode shown in Fig. 3, for example, in the case of the three-dimensional image 400 in the third display mode, 4 is the same as the base station graphic 311 in Fig. 3, and the mobile station graphic 401 in Fig. 4 is the same as the mobile station 301 in Fig. 3, The movement locus 403 in Fig. 4 is the same as the movement locus 303 in Fig.

In this case, 403R in FIG. 4 shows a portion drawn as a red line, which is a part of a black line showing the movement locus 403. In this drawing, the locus 403R is 2 In place.

As described above, both of the position information and the reception level are input to the position information processing unit 115 from the reception unit 113. The reception level is the electric field intensity level of the signal received by the rotation receiving antenna apparatus 112 That is, the carrier level, and therefore changes depending on the propagation conditions of the microwave from the mobile station 101 to the base station 111. [

Therefore, the theoretical reception level is calculated in advance for this reception level, and it is set as a threshold value to the positional information processing unit 115. [

Here, the theoretical reception level is a theoretically obtainable reception level when the mobile station 101 and the base station 111 propagate the radio wave under the standard condition when the base station 111 is in an expected state.

The standard condition at this time is a case where a standard value is set for various conditions in an actual transmitting and receiving equipment such as a transmitting antenna gain, a transmitting frequency, a transmitting output, a receiving antenna gain, a gain at a receiving unit .

In other words, in this case, the transmission antenna diameter, the transmission frequency, the transmission power, and the distance to the receiving means calculated from the position information of the transmitting means at that time (the transmission level, the free space loss level, (The antenna diameter, the transmission loss, the reception loss level, etc.) of the base station, and a theoretical expected reception level obtained from the reception equipment / setting information of the base station The reception level is shown.

Thus, the position information processing unit 115 plots the position of the mobile station 101 over the required movement range based on the position information input from the reception unit 113, and displays the calculated result as the movement locus 403 At this time, in parallel with this processing, the reception level RL input from the reception unit 113 is sequentially compared with the theoretical reception level TL set as the threshold value, and the difference between the reception level RL and the theoretical reception level TL The theoretical difference DELTA L is determined and compared with a predetermined judgment value, for example, 10 dB, which is set in advance, and the difference (DELTA L > 10 dB) .

The judgment value at this time = 10 dB is an example, and it is needless to say that it can be set to an arbitrary size.

When the theoretical difference DELTA L is less than the judgment value of 10 dB, the movement locus 403 is indicated by a black thick line. When the theoretical difference DELTA L is equal to or larger than the judgment value of 10 dB, the movement locus 403 Line.

Therefore, in this third display mode, it can be seen that the reception level RL decreases when the movement locus 403 becomes red line display. As a result, when any obstacle occurs in the propagation path of the radio wave, In the case where a deviation occurs in the direction of orientation, it is possible to recognize the movement locus 403 simply, reliably and reliably, and to have high reliability in relaying the work.

4, a portion 403R indicated by a thin red line is displayed when the mobile station 101 is positioned behind a building (image C) or a hill (image H) as viewed from the base station 111 .

Therefore, if the movement trajectory 403 becomes a red line, it means that any trouble has occurred in the propagation of the radio wave in that portion. As a result, whether or not the reception level RL is valid can be easily detected by simply viewing the display of the movement locus And can cope with suppression of obstacle appropriately.

At this time, when the information table shown in Fig. 5 is prepared in the reception information processing unit 115 and position information is acquired in the third display mode, position information (latitude, longitude, altitude) Keep the reception level.

Then, based on the information table of Fig. 5, the past movement trajectory can be reproduced on the three-dimensional electronic map, and it is possible to verify the operation back to the operation of the system. This is very useful job logging (logging).

However, in such a system, the acquisition of the position information becomes periodic. Therefore, in the case of a system that re-adjusts the antenna direction of the rotary receiving antenna device 112 based on the acquired position information, The level loss due to the antenna adjustment error due to the acquisition interval can not be avoided.

Therefore, in this embodiment, the reception level at the time when the difference between the expected reception level and the actual reception level becomes the smallest is used as the reception level in the interval in the position information acquisition interval at this time, If the difference from the expected reception level at the reception level is equal to or higher than the predetermined level, it can be considered that a significant value is detected and reflected in the display of the movement locus.

According to this embodiment, even if there is an approved level loss due to the directional deviation of the antenna within a predetermined interval, the level drop is not detected as a significant value, It becomes possible to make a difference judgment meaningful only to the level loss.

4, the degree of receivability in each moving period can be collectively monitored with respect to the moving locus 403 of the mobile station 101, and therefore, It is possible to provide a user with an environment for analysis and review which is exponentially effective.

Here, the display division according to the difference of the reception levels in the third display mode shown in Fig. 4 may be a display division only according to the degree of the actual reception level.

Further, the reception level in this case may be replaced by a margin for the theoretical breakdown level in the corresponding modulation method in the digital transmission, and in addition, a reception level such as a constellation convergence rate or a delay profile evaluation value, It is also possible to use those available as a level.

Here, when the difference is the reception level, it is also possible to use one obtained by adding a predetermined calculation based on a plurality of values such as the reception level and the margin.

In addition, with respect to the display of the second display mode of Fig. 3 and the display of the non-receivable / possible state in the third display mode of Fig. 4, no symbol mark is newly provided, Or may be exaggerated only at that point with a different color, a thickness, a mark, or the like.

Similarly, the display division of the moving locus in Fig. 4 is not limited to the above-mentioned red line, but various display division methods may be used. For example, a difference in line type such as a solid line, a broken line, , The thickness of the line, and the color of the line. Therefore, either method may be applied.

1, in order to transmit position information from the mobile station 101 to the base station 111, in the same way as in the conventional art, The mobile station 101 is made up of the same transmitting unit 104 as the transmitting unit for receiving the video / audio signal and the transmitting unit for receiving the positional information, , As described above, for example, a method of modulating a voice signal as a serial signal and transmitting the voice signal as one of voice inputs with a plurality of transmission units.

However, as an embodiment of the present invention, the position information may be transmitted by using a radio wave different from the microwave used for transmission of broadcast material.

In this case, the transmitting unit for receiving the video / audio signal and the transmitting unit for receiving the position information are not necessarily the same. That is, in the case of the present invention, it is not necessarily required to transmit the video / audio signal and the position information by the same radio wave.

In other words, it is sufficient that the radio wave received by the rotary receiving antenna device 112 of the base station 111 includes at least a video / audio signal. In this case, the position information is transmitted on a separate radio wave.

The radio wave in the case of transmitting only the position information signal is not limited to the SHF frequency band used in the transmission unit 104 of the mobile station 101 but may be a radio wave in the frequency band used in the radio such as VHF band or UHF band It is also good.

(Industrial availability)

The present invention can also be used as a display system such as a radar, a simulator, or a game.

101: mobile station (helicopter equipped with mobile station equipment)
105: transmitting antenna device
111: base station
112: rotating receiving antenna device
200, 300, 400: Three-dimensional image
201, 301, 401: Mobile station graphic
203, 303, 403: movement trajectory
204, 304, 404: Horizontal 0 conductor (H0 line)
205, 305, 405: Vertical 0 conductor (V0 line)
206, 306, 406: direction indicator
211, 311, 411: base station graphic
212, 312, 412: antenna direction line
303X, 403X: movement trajectory (hidden part)
307, 407: Shaded circles
308, 408: No sloping circularity
403R: Red line portion of movement trajectory
C: Image (building)
H: Image (hills)
S: Image (slope)
M: Map display section of the monitor section

Claims (6)

A base station having a mobile station capable of radio transmission of broadcast material and its own position information and a monitor means capable of displaying a three-dimensional electronic map, wherein the base station receives the radio wave transmitted from the mobile station via a rotation receiving antenna And sequentially displaying the position information on the three-dimensional electronic map displayed on the display surface of the monitor means so that the position of the mobile station and the display of the movement locus are displayed on the three- In the display system obtained by the base station,
The base station is provided with a position information processing unit,
In the location information processing unit,
The receiving level of the radio wave from the time when the latest positional information is acquired to the time when the next positional information is acquired is monitored for the positional information of the mobile station periodically acquired by the base station from the radio wave transmitted from the mobile station Actual reception level setting means for setting the reception level when the difference between the expected reception level and the actual reception level is the lowest, that is, the highest level, as the actual reception level at the time of acquiring the position information,
A reception level expected at the base station at the time of acquiring the positional information is calculated based on an antenna gain, a transmission frequency, a transmission output, and a distance to the base station calculated by the positional information at this point in time, Theoretical reception level setting means for setting the calculated reception level as a theoretical reception level,
A theoretical level difference storage means for storing the difference between the actual reception level and the theoretical reception level as a theoretical level difference or a logical level difference period for storing as a logical level difference period a period in which the theoretical level difference is equal to or larger than a threshold value preset in advance At least one of the storage means
Respectively,
Wherein at least one of the theoretical level difference and the logic level difference period stored by the storage means is displayed on the three-dimensional electronic map on which the video image is displayed on the display surface of the monitor means, And outputting the resultant signal,
Wherein the reception level is a field strength level of a signal received from the mobile station
.
The method according to claim 1,
Wherein the position information processing unit changes the display mode of the line indicating the movement trajectory in accordance with the detection result of the reception level when displaying the movement trajectory of the mobile station on the display surface of the monitor means.

The method according to claim 1,
Wherein the position information processing unit displays a symbol mark indicating an interruption of reception at the position where the reception is stopped on the moving locus when the reception of the position information is stopped when displaying the movement locus of the mobile station, And displays the symbol mark indicating the resumption of reception at the position where the reception is restored on the moving locus when the reception of the position information is restored.
A base station having a mobile station capable of radio transmission of broadcast material and its own position information and a monitor means capable of displaying a three-dimensional electronic map, wherein the base station receives the radio wave transmitted from the mobile station via a rotation receiving antenna And sequentially displaying the position information on the three-dimensional electronic map displayed on the display surface of the monitor means so that the position of the mobile station and the display of the movement locus are displayed on the three- In the display method to be obtained by the base station,
The receiving level of the radio wave from the time when the latest positional information is acquired to the time when the next positional information is acquired is monitored for the positional information of the mobile station periodically acquired by the base station from the radio wave transmitted from the mobile station The reception level when the difference between the expected reception level and the actual reception level is the smallest, i.e., the highest level is set as the actual reception level at the time of acquiring the position information,
A reception level expected at the base station at the time of acquiring the positional information is calculated based on an antenna gain, a transmission frequency, a transmission output, and a distance to the base station calculated by the positional information at this point in time, And sets it as a theoretical reception level,
Storing a difference between the actual reception level and the theoretical reception level as a theoretical level difference or a period in which the theoretical level difference is equal to or greater than a preset threshold value as a logical level difference period,
Wherein at least one of the theoretical level difference and the logic level difference period is video-output on the three-dimensional electronic map on which the video image is displayed on the display surface of the monitor means, together with the position of the mobile station and the display of the movement locus, Is used for direction adjustment of the rotation receiving antenna,
Wherein the reception level is a field strength level of a signal received from the mobile station
≪ / RTI >
5. The method of claim 4,
Wherein a display mode of a line indicating the movement trajectory is changed in accordance with a detection result of the reception level when the movement trajectory of the mobile station is displayed on the display surface of the monitor means.
5. The method of claim 4,
When the reception of the positional information is stopped when the movement locus of the mobile station is displayed, a symbol mark indicating an interruption of reception is displayed at the position where the reception is stopped on the movement locus, And when it is recovered, displaying a symbol mark indicating the resumption of reception at the position where the reception is restored on the moving locus.

Images