KR102216839B1 - Communication system for mechanized vehicle using wireless communication - Google Patents

Abstract

The present invention relates to a communication system for a mechanized vehicle using a wireless communication method. The communication system for a mechanized vehicle using a DECT method comprises a plurality of vehicle radios, a main controller, and a plurality of wireless terminals. The plurality of vehicle radios correspond to a plurality of external wireless networks, respectively, have external antennas, and transmit and receive signals through an external wireless network. The main controller has a radio selection switch capable of selecting one of the plurality of vehicle radios and is connected to the vehicle radios by wire. The wireless terminals are portable, have headsets, and transmit transmission key values including selected transmission mode information to the main controller when a communication mode (transmission, reception, internal communication) attached to the headset is selected as a transmission mode. After a vehicle radio matched to the external wireless network one on one is selected by operating the radio selection switch, the main controller receives a transmission key value from the headset of the wireless terminal. When receiving a voice signal from the wireless terminals, the main controller transmits the voice signal to the selected vehicle radio. When receiving the voice signal from the main controller, the vehicle radio transmits the voice signal to the external wireless network corresponding thereto one on one. Therefore, when the vehicle is controlled outside thereof, the accuracy of communication can be increased.

Description

Communication system for mechanized vehicle using wireless communication method {Communication system for mechanized vehicle using wireless communication}

The present invention relates to a communication system, and in particular, to a communication system for a mechanized vehicle using a wireless communication method.

Mechanized vehicles usually have 3 to 6 crew members on board. In the narrow space of the vehicle, the crew communicates through an internal communication network centered on a wired network that is inconvenient to use. In particular, since the helmet is connected to the control box attached to the interior wall of the vehicle with a cable, the radius of action of the crew is limited. These things have been demanded for improvement due to user inconvenience, and the narrow space inside the vehicle is a factor that increases the fatigue of the crew due to wired connection operation.

Therefore, it is necessary to improve the reliability and convenience of communication and communication quality and minimize the frequency of failures due to wired operation by developing a wireless type of existing wired interphone set installed in a mechanized vehicle.

Currently, the intercom set can not provide internal control if the commander leaves the vehicle. In order to safely guide a mechanized vehicle and reconnaissance of difficult areas, there are cases where the commander or step commander must act outside the vehicle. At this time, there is no measure to communicate with the inside of the vehicle, so additional communication measures are required when leaving the vehicle.

In addition, there is a problem in that communication failure and noise occur due to wired connection through a slip ring when the currently operating tank or upper turret rotates. In addition, when controlling the vehicle from outside the vehicle, the accuracy is degraded due to communication by handwritten or completion signals, and command communication for operations is restricted.

The problem to be solved by the present invention was created to solve the above-described problems and inconveniences, and the existing wired telephone set was developed as a wireless telephone set that provides various functions and provides various functions through wireless communication. It eliminates the limitation and inconvenience of the crew's action radius in the space inside the mechanized vehicle, eliminates communication defects and noise caused by slip rings, and improves the accuracy of communication when controlling the vehicle from the outside of the mechanized vehicle and provides command communication. It is to provide a communication system for a mechanized vehicle using a wireless communication method that enables smooth operation.

A communication system for a mechanized vehicle using a wireless communication method according to the present invention for achieving the above technical problem is a mechanization in which a plurality of crew members of a mechanized vehicle support communication between a crew member or an external communication network inside or outside the mechanized vehicle through a wireless terminal. In a vehicle communication system, a plurality of devices installed inside the mechanized vehicle, corresponding to a plurality of external wireless networks, and having an external antenna for communication with the outside of the mechanized vehicle, and transmitting and receiving signals through the external wireless network. Vehicle walkie-talkie; A main controller having a radio selection switch for selecting one of the plurality of vehicle radios, and connected to the vehicle radio by wire; And wireless communication between the crew of the mechanized vehicle and external wireless network and wireless communication through the vehicle radio, and is portable, equipped with a headset, and a communication mode (transmission, reception, internal communication) attached to the headset is transmitted. When the mode is selected, a transmission key value including the selected transmission mode information is transmitted to the main controller, and the main controller includes a transmission key from the headset of the wireless terminal after the vehicle radio is selected by operating the radio selection switch. Upon receiving the value and receiving the voice and data signals from the wireless terminal, the voice and data signals are transmitted to the vehicle radio selected through the radio selection switch, and the voice and data signals received from the vehicle radio are transmitted to the radio terminal, and the Upon receiving a voice signal from the main controller, the vehicle radio transmits voice and data signals to the corresponding external wireless network on a one-to-one basis, and transmits the voice and data signals received from the external wireless network to the main controller.

The wireless terminal has a position selection switch that selects whether the wireless terminal is inside the mechanized vehicle (in the vehicle) or outside the mechanized vehicle (outside the vehicle), and the hatch is closed in an exhibition or training situation, and the wireless terminal is machined When located inside the vehicle, the signal strength is controlled so that the signal propagated through the antenna of the wireless terminal reaches within the turning radius of the mechanized vehicle and is protected from radio interference or eavesdropping, and when the wireless terminal is moved out of the vehicle, the user When the position selection switch is selected out of the car by the operation of, the intensity of the transmission signal transmitted through the antenna increases, and an external movement signal notifying that the position is moved to the outside of the mechanized vehicle is transmitted to the main controller, and the main controller from the wireless terminal When the external mobile signal is received, the strength of a transmission signal through an antenna is increased for wireless communication with the wireless terminal.

The main controller includes a frequency power automatic measuring device that monitors the radio wave strength of the wireless terminal in real time and detects that the wireless terminal moves out of the vehicle through the radio wave strength of the wireless terminal, and the frequency power automatic measuring device When the wireless terminal is moved out of the vehicle through the vehicle, the strength of a transmission signal through an antenna is increased for wireless communication with the wireless terminal.

The main controller has an external antenna cable port, further includes an external antenna connected to the external antenna cable port and located above the mechanized vehicle, and increasing the intensity of the transmission signal through the external antenna. It is characterized in that it is possible to expand a communication area with an external antenna as the center.

When the wireless terminal moved out of the car is referred to as an external wireless terminal, the external wireless terminal is the selected transmission mode when a communication mode (transmission, reception, internal communication) switch attached to the headset of the external wireless terminal is selected as a transmission mode. A transmission key value including information is transmitted to the main controller, and the main controller selects a vehicle radio that is matched one-to-one with an external wireless network by a user's operation of the radio selection switch, and then receives the transmission key value from the headset of the external wireless terminal. When receiving and receiving a voice signal from the external wireless terminal, the voice and data signals are transmitted to the selected vehicle radio through the radio selection switch, and the vehicle radio receives a voice and data signal from the main controller. It is characterized by transmitting voice and data signals through a wireless network.

The main controller has a communication module consisting of a mother station playing a role of FP (Fixed Part) in a wireless communication method and a wireless terminal playing a plurality of PP (Portable Part) roles, and the communication module starts a tank in an exhibition or training situation. It is characterized in that it is possible to support audio and data communication through a control switch installed in the main controller and a plurality of spare batteries even after the switch is turned off.

The communication module performs A/D (Analog/Digital) or D/A (Digital/Analog) conversion of the audio signal, and compares the voice signal of the transmission path and the voice signal of the reception path to obtain the same signal component. It may include a digital signal processing unit (DSP) having a line echo cancellation unit (Line Echo Canceller) to output after removal.

A communication system for a mechanized vehicle using a wireless communication method according to the present invention for achieving the above technical problem is a wireless communication system for a mechanized vehicle including a vehicle radio, a main controller, and a plurality of wireless terminals, and is one of the plurality of wireless terminals. 1 The wireless terminal has a headset having a communication mode selection switch capable of selecting a communication mode (transmission, reception, internal call), a headset connection terminal connected to the headset, and is portable, and is input to the microphone of the headset. The microphone of the headset wakes up by the strength of the voice signal, and the voice signal input to the microphone is wirelessly transmitted to the main controller, and if there is no voice signal input to the microphone for a predetermined time, the microphone is turned off. In order to transmit and receive voice signals between a plurality of wireless terminals, the communication mode of the headset is selected as an internal call, and to transmit and receive voice signals with an external combat wireless network, the communication mode of the headset is selected as transmission or reception, and the communication mode The transmission of the communication mode is maintained only when the communication mode selection switch is pulled, and when the communication mode selection switch is released, the communication mode is automatically selected as reception, the main controller receives communication mode information from the first wireless terminal, and the reception When the received communication mode information is an internal call and a voice signal is received from the first wireless terminal, the received voice signal is broadcast to the remaining wireless terminals among the plurality of wireless terminals, and the vehicle radio is transmitted from the external combat wireless network. When a voice signal is received through the broadcast, the received voice signal is broadcast to the plurality of wireless terminals, and the received communication mode information is transmitted, and when a voice signal is received from the first wireless terminal, the external device selected by the user's operation The voice signal of the first wireless terminal is transmitted to the external combat wireless network through the vehicle radio corresponding to the wireless combat network, and the voice signal is also broadcast to the other wireless terminals. If the received communication mode information is received, the external combat Receives an external voice signal transmitted through a wireless network through a vehicle radio, and the received Voice signals are broadcast to the plurality of wireless terminals.

The main controller is equipped with a control selection switch for selecting the volume, VOX at all times, a terminal selection switch for selecting a wireless terminal, and a level switch for selecting the level (L, M, H) of the volume or VOX leading sound, In order to adjust the volume of the wireless terminal, the volume is selected through the control selection switch, the corresponding wireless terminal is selected through the terminal selection switch, and the volume level (L, M, H) is selected through the level switch. And, in order to adjust the level of the VOX lead sound, select VOX through the control selection switch, select a corresponding wireless terminal through the terminal selection switch, and adjust the level of the lead sound through the level switch (L, M, It is characterized by selecting H).

The wireless terminal has a power/VOX switch that can select a VOX function to wirelessly transmit/receive a voice signal to be turned on, a power OFF to cut off the power supply, and a power ON to be supplied with power, When power ON is selected through the power/VOX switch, power is supplied to the wireless terminal, and when power OFF is selected through the power/VOX switch, power supply to the wireless terminal is cut off, and through the power/VOX switch When VOX ON is selected, the VOX function that transmits voice signals wirelessly through a wireless terminal is activated.

A communication system for a mechanized vehicle using a wireless communication method according to the present invention for achieving the above technical problem comprises: a vehicle power supply device for supplying main power to the mechanized vehicle; A vehicle radio cradle having a main power input terminal of the mechanized vehicle and mounting a plurality of vehicle radios each having an antenna for transmitting and receiving signals to and from an external combat radio network; The main power input terminal of the mechanized vehicle and the radio input terminals matched one-to-one with the radio installed in the radio holder, and the power supplied through the radio input terminal or the main power input terminal of the mechanized vehicle A main controller receiving power through power supplied through or through power of a secondary battery charged by a charging system; A charging system comprising a plurality of secondary batteries and a plurality of secondary batteries charged by a main power output from the vehicle power supply device, wherein when the vehicle battery of the mechanized vehicle is turned off, the Power is supplied to the main controller through the secondary battery of the charging system, the secondary battery charged by the charging system is inserted into the wireless terminal to supply power, and a plurality of secondary batteries of the charging system are connected in parallel, and the parallel The power of the connected secondary battery is boosted and supplied to the main controller.

The main controller includes a power selection switch that enables you to select any one of a vehicle, a radio, and a battery as a source of supply power, and when a vehicle is selected through the power selection switch, power supplied to the main controller is supplied from the vehicle battery. When the radio is selected through the power selection switch, power supplied to the main controller is supplied from the radio, and when a battery is selected through the power selection switch, the power supplied to the main controller is supplied from a secondary battery. To do.

According to the communication system for a mechanized vehicle using a wireless communication method according to the present invention, by replacing the wired type interphone set of the mechanized vehicle with a wireless type, call quality according to cable connection and reliability and convenience of communication are improved, and failure due to wired operation The frequency can be minimized and the crew's action radius limit can be removed. In addition, by applying the wireless terminal technology of the band with secured reliability, it eliminates the frequency of call noise and failure, which are physical limitations of wired cable operation, and improves high reliability and call quality.

In addition, according to the present invention, even when the commander opens the hatch and comes out of the vehicle and controls the outside, the distance is extended to 1Km using an external antenna for extending the distance of the mechanized vehicle. In case of departure of the vehicle, the step commander can maintain the communication network with the internal crew.

In addition, according to the present invention, when the vehicle must be turned off in order to perform an ambush operation, the battery of the vehicle is extended by operating the wireless terminal using the spare battery attached to the main controller as a power source. It can prevent complete discharge.

In addition, according to the present invention, by applying a high-security wireless communication technology instead of the existing wired communication network, it is possible to improve the occurrence of problems due to security, and secure convenience of maintenance in the field by having a self-check function.

In addition, according to the present invention, by using a self-diagnosis program for a mechanized vehicle and the use of wireless communication technology, it is possible to improve call quality and minimize the occurrence of failures, thereby providing convenience of maintenance and cost reduction, as well as increasing equipment operation rate. .

In addition, in the case of rescue tanks and bridge tanks, the head of the maintenance team controls the driver through a wireless intercom from the outside of the vehicle, so that safe rescue of the towed vehicle and the installation of the bridge of the bridge tank can be safely and quickly installed by the commander's wireless control. In addition, by removing the control box box attached to the inner space of the narrow mechanized vehicle and the cable for connection to the control box, the internal space is secured to increase the radius of activity of the crew and improve the activity convenience, thereby reducing combat fatigue and improving the performance of mechanized vehicles. Space can be secured for installation of the battlefield management system.

1 is a block diagram showing an embodiment of a communication system for a mechanized vehicle using a wireless communication method according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating an applied technique for excluding frequency interference of a DCET protocol according to a frequency, time, and distance that can be used as an example of a wireless communication method in an embodiment of the present invention.
3 shows that when the DECT RF output is -20dBm in an internal intercom state, frequency reuse is possible if the physical separation distance in each FA group is guaranteed to be a certain distance (4.4m or more).
4 illustrates a case in which an antenna located inside a vehicle is provided in an embodiment of the present invention, and the DECT RF output of the vehicle internal antenna is +10dBm in an external intercom state.
FIG. 5 shows a case in which an antenna separately located outside the vehicle is provided in an embodiment of the present invention, and the DECT RF output of the vehicle external antenna is +10dBm in an external intercom state.
6 shows an example of the configuration of a communication system for a mechanized vehicle using a DECT method according to an embodiment of the present invention.
7 shows a DECT timeslot, a field in the timeslot, and a configuration thereof.
8 shows wireless security through ID registration in a primary security process between a main controller (MCU) and a small communication device.
9 is a block diagram showing the configuration of an embodiment of a communication system for a mechanized vehicle providing a VOX function according to the present invention.
10 shows various selection switches that the main controller may have.
11 shows switches provided in wireless terminals according to the present invention.
12 is a block diagram showing the configuration of an embodiment of a communication system for a mechanized vehicle providing a rechargeable battery function according to the present invention.
13 is a block diagram illustrating an embodiment of a configuration of a main controller (MCU, 1500) in which six fixed parts (FPs) each equipped with a DECT module are disposed.
14 is a block diagram showing a detailed configuration of each of the DECT modules 1510, 150, 1530, 1540, 1550, and 1560 of the FP (Fixed Part).
15 is a block diagram showing a detailed configuration of the DSP Block 1650 of the DECT module included in the main controller (MCU).

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Since the embodiments described in the present specification and the configurations shown in the drawings are only preferred embodiments of the present invention, and do not represent all the technical spirit of the present invention, various equivalents that can replace them at the time of the present application And it should be understood that there may be variations.

1 is a block diagram showing the configuration of an embodiment of a communication system for a mechanized vehicle using a wireless communication method according to the present invention. The communication system for a mechanized vehicle using a wireless communication method according to an embodiment of the present invention includes a main controller 110, a plurality of wireless terminals 120, 122, 124, and a plurality of vehicle radios 130, 132, 134, and 136. It is done by doing.

The plurality of vehicle radios 130, 132, 134, and 136 correspond to the plurality of external wireless networks 150 and 152 on a one-to-one basis, and have an external antenna and transmit and receive signals through the external wireless networks 150 and 152. The plurality of external wireless networks 150 and 152 are shown in FIG. 1 for convenience, but two or more external wireless networks may be used. For example, the external wireless network may include an external combat wireless network, a small unit wireless network, and a combatant wireless network. In addition, vehicle radios include vehicle radios for external combat radio networks, vehicle radios for small units radio networks, and vehicle radios for combatant radio networks. And each external wireless network is equipped with a one-to-one correspondence with radios. That is, the first vehicle radio is provided in the first external combat wireless network, the second vehicle radio is provided in the second external combat wireless network, the small unit radio network is provided with the small unit radio network, and the combatant radio network is equipped with a combatant radio. Is equipped.

The main controller 110 includes a radio selection switch 112 capable of selecting one of a plurality of external communication networks 150 and 152, and is connected to the vehicle radios 130, 132, 134, and 136 by wire. Each of the plurality of wireless terminals (120, 122, 124) is portable, equipped with a headset (10, 12, 14), and a communication mode attached to the headset (10, 12, 14) (transmission, reception, internal communication) When the selection switch is selected as the transmission mode, the transmission key value including the selected transmission mode information is transmitted to the main controller 110.

The main controller 110 selects a vehicle radio (one of 130, 132, 134, 146) corresponding to the external wireless network in a one-to-one correspondence with the external wireless network by the user's operation of the radio selection switch 112, and then the transmission key value from the headset of the wireless terminal. When receiving and receiving a voice signal from the wireless terminal, the voice signal or voice signal and data are transmitted to the vehicle radio (one of 130, 132, 134, 136) selected through the radio selection switch 112.

When the vehicle radio (130, 132, 134, 136) receives a voice signal from the main controller 110, it transmits a voice signal or a voice signal and data to an external wireless network corresponding one-to-one.

Meanwhile, wireless communication methods used in the present invention are various, and in an embodiment of the present invention, a description will be made using Digital Enhanced Cordless Telecommunications (DECT) as an example of a wireless communication method. However, the present invention is not limited to the DECT method.

2 is a diagram for explaining an applied technique for excluding frequency interference of a DCET protocol according to a frequency, time, and distance that can be used as a wireless communication method in an embodiment of the present invention. Referring to FIG. 2, in the DECT system, there are 24 time slots per basic frame. In Korea, three frequencies (3 FA) can be used, and the maximum number of terminals per FA is 12.

3 shows that in the state of the internal intercom, when the center frequency is 1788 MHz and the DECT RF output is -20 dBm, the DECT RF output signal is about -85 dBm when the physical separation distance in each FA group is guaranteed to be a certain distance (4.4m or more). It indicates that frequency reuse is possible. 3, the internal intercom has a signal strength of -57 dBm when a radius of 1 m away from the antenna center is -57 dBm, and a signal loss of -37 dB is generated at this time, and a signal strength of -63 dBm when a radius of 2 m decreases. Is generated -43dB. And when the radius is 4.4m away, the signal strength becomes -85 dBm, and the signal loss is -65 dB. Therefore, if the distance is about 5m or more in radius, it enters the threshold area for the minimum reception level for communication, and this distance is recognized as noise by the DECT receiver, which means frequency reuse without interference.

In the present invention, a wireless terminal supports wireless communication between crew members of a mechanized vehicle through a main controller. If you are inside a mechanized vehicle, you can automatically control the minimum radio frequency signal strength. For example, when the hatch is closed during an exhibition or training situation and the wireless terminal is located inside the mechanized vehicle, the signal strength may be limited so that the signal propagated through the wireless terminal antenna reaches within the turning radius of the mechanized vehicle. . Through this, radio wave monitoring can be disabled and eavesdropping can be blocked.

When the center frequency is 1788 MHz and the DECT RF output is -20dBm, by using the DECT method, the plurality of wireless terminals 120 and 122 inside the mechanized vehicle operate as the internal wireless communication network 140 without frequency interference from the outside. can do.

On the other hand, the wireless terminals 120, 122, 124 according to the present invention are provided with position selection switches 11, 13, 15 for selecting whether they are inside the mechanized vehicle (inside the vehicle) or outside the mechanized vehicle (outside the vehicle). That is, the position selection switch of the wireless terminal is set to'in-vehicle' when it is in the mechanized vehicle, and is set to'outside the car' when the position is moved to the outside of the mechanized vehicle.

When the wireless terminal moves to the outside of the mechanized vehicle and makes a call with the wireless terminal inside the mechanized vehicle, or when the commander directs the crew inside the mechanized vehicle, referring to FIG. 1, the wireless terminal 124 is located outside the mechanized vehicle. When the position selection switch 15 is selected as'out of the car' by the user's operation when it is moved, the strength of the transmission signal transmitted through the antenna increases. For example, the intensity of the transmission signal increases from low power (eg -20dBm) to medium power (eg +10dBm), and in the case of medium power, communication is possible up to a radius of approximately 50m. Further, the wireless terminal 324 moved to the outside of the mechanized vehicle transmits an external movement signal notifying that the location is moved to the outside of the mechanized vehicle to the main controller 110.

At this time, when the main controller 110 receives the external mobile signal from the wireless terminal 124, the strength of the transmission signal through the antenna is increased for wireless communication with the wireless terminal 124. For example, the strength of a transmission signal transmitted through the antenna of the main controller 110 increases from -20dBm to +10dBm, and communication is possible up to a radius of 50m.

In addition, in an embodiment of the present invention, when the wireless terminal is moved to the outside of the mechanized vehicle (outside the vehicle), the master controller may be provided with an automatic frequency power measurement device. The automatic frequency power measurement device monitors the radio wave strength of the wireless terminal in real time and detects that the wireless terminal moves out of the vehicle through the radio wave strength of the wireless terminal. When it is detected that the wireless terminal is moved out of the vehicle through the automatic frequency power measurement device, the intensity of the transmission signal through the antenna is increased for wireless communication with the wireless terminal.

In addition, the main controller can perform wireless security functions by encrypting and decrypting the wireless terminal through the SPI interface between the security module and the communication module in the hardware of the Embedded Linux environment when the wireless terminal is in or outside the vehicle.

4 shows a state of an external intercom according to an embodiment of the present invention, and shows a case where the center frequency is 1788 MHz and the DECT RF output of the antenna inside the mechanized vehicle is +10 dBm. Referring to FIG. 4, the signal strength at a radius of 50m around the antenna is -76dBm, and the loss at this time is a free space loss (-71dB) and a propagation loss generated while being output to the free space through the hatch of the mechanized vehicle ( -15dB). Therefore, in case of supporting communication with an internally installed antenna to support an external intercom, it is desirable that the communication radius be limited to about 50m or less around the antenna when -10dB margin is considered in consideration of the specificity of use in the field. When spaced apart by the above interval, it enters the minimum reception level area for communication, so when using its own antenna, communication support up to 50m is possible.

And, the main controller 110 has an external antenna cable port 114, further includes an external antenna 316 connected to the external antenna cable port and located above the mechanized vehicle, and the external antenna By increasing the intensity of the transmission signal through the antenna, a communication area can be expanded around the external antenna 116. For example, when the strength of the transmission signal transmitted through the antenna of the main controller 110 increases from -20dBm to +10dBm, communication can be performed up to a radius of 200m.

5 illustrates a case where the external antenna is separately installed outside the mechanized vehicle and the DECT RF output of the vehicle external antenna is +10dBm in an external intercom state. Referring to FIG. 5, in order to support a wider range of coverage in an external intercom state, a separate external antenna is installed and operated on the top of the mechanized vehicle. In this case, a radius at which a transmission signal can be effectively reached can support an external intercom communication of 200 m, which is about four times greater than when the output of the internal antenna is increased to +10 dBm. If the external antenna is separated by a radius of 200m or more, the signal strength decreases to -84dBm and a loss of -94dB occurs considering -10dB of radio interference in the field. Therefore, if the external antenna is separated by a radius of 200m or more, it enters the minimum reception level area. Therefore, when an external antenna is used, communication support up to 200m is possible.

Meanwhile, when the wireless terminal moved out of the car is referred to as an external wireless terminal, the external wireless terminal 124 is a communication mode (transmission, reception, internal communication) switch attached to the headset 14 of the external wireless terminal 124 When is selected as the transmission mode, the transmission key value including the selected transmission mode information is transmitted to the main controller 310.

At this time, the main controller 110 selects a vehicle radio that corresponds to the external wireless network 350 in a one-to-one manner by operating the radio selection switch 312, and then receives the transmission key value from the headset 14 of the external wireless terminal 124. And receive a voice signal from an external wireless terminal 124. Upon receiving the voice signal, the voice signal is transmitted to the selected vehicle radio through the radio selection switch 112. For example, the vehicle radio 130 corresponding to the external wireless network 150 may be selected through the radio selection switch 112 on a one-to-one basis. When the vehicle radio 130 receives a voice signal from the main controller 110, it transmits the voice signal to the corresponding external wireless network 150 on a one-to-one basis.

6 illustrates an example of a configuration of a communication system for a mechanized vehicle using a Digital Enhanced Cordless Telecommunications (DECT) method according to an embodiment of the present invention. The DECT-based communication protocol stack (DECT standard EN300 175 1-9) is applied to the inconvenience of the existing streamlined intercom set, and a stable internal wireless intercom solution with a full duplexer structure is provided.

By applying the same technology for external communication, it stably supports communication of external wireless intercoms, and various operations are possible within a range of about 50m around the radius of the combat vehicle. In order to extend the communication distance of external communication, a separate external antenna can be used to extend the communication radius to about 200m.

In the wireless communication system according to the embodiment of the present invention, the main controller is provided with a battery charging device, and the wireless terminal is a personal portable and can be carried on a tan belt. In addition, it includes 4 vehicle radio connection terminals and 6 wireless terminals. The wireless terminal is a battery detachable type and can use 3.7V power, and the internal intercom and external intercom use an operating frequency of 1786 MHz to 1791 MHz.

An embodiment of the present invention has functional blocks such as DECT DSP, DECT protocol stack, DECT module control, DECT data communication, external input control, DECT radio control, self-diagnosis, and NMS (Network Management System), and these functional blocks are software It can also be implemented as

An embodiment of the present invention supports 1,600 Bit/s data communication. 7 shows a DECT timeslot and a field in the timeslot, and their configuration. Referring to FIG. 7, a communication function through program control of A-field, which is a lower field of D-Field (388 bits), which is a part of DECT Time-Slot, and a voice data communication function through B-field (320 bits) can be provided. have. In the wireless intercom process, the system usability can be improved by supporting data communication.

The embodiment of the present invention can provide high security performance as shown in Table 1 through two encryption processes.

Security level Evidence Contents Stage 1 TSI security protocol standard (IPEI, RFPI) Only registered devices can wirelessly access Step 2 TSI security protocol standard DSAA Provides a secondary security system in the wireless section Reference DECT Standard Authentication Algorithm (DSAA)

The encryption procedure will be described in detail. 8 shows wireless security through ID registration in a primary security process between a main controller and a small wireless terminal. In the first security process, the first wireless security is provided through the mutual registration process between devices. For the master controller, only the devices that have already registered the 6byte ID of the unique International Portable Equipment Identity (IPEI) previously assigned to the commander's wireless terminal (or the crew's wireless terminal) to the master controller, are wirelessly connected through Air Link. On the contrary, the terminal is connected only through the main controller and Air Link through a 6 byte ID called Radio Fixed Part Identity (RFPI) assigned in advance. For the second security process, it provides secondary wireless security through a coding process through the generation of an encryption key, which is a second security step, separate from the mutual registration process.

In an embodiment of the present invention, the secondary wireless security may be performed as follows. The main controller generates a security key using the unique IPEI assigned to the wireless terminal and the number of digits of the IPEI, and stores the security key and the IPEI in the main controller. In addition, if the wireless terminal generates a security key using RFPI and the number of digits of the RFPI, encrypts the voice signal and transmits it to the main controller, the main controller obtains and decrypts the previously stored security key when receiving the encrypted voice signal from the wireless terminal. I can. An embodiment of the present invention provides high call quality. It is easy to support 32 kbit/s ADPCM voice codec according to the use of G.726 codec recommended by ITU-T, and through GFSK (BT=0.5) digital signal processing, noise is removed and calls are clear.

9 is a block diagram showing the configuration of an embodiment of a communication system for a mechanized vehicle using the DECT method according to the present invention, providing a VOX function.

An embodiment of a communication system for a mechanized vehicle using the DECT method according to the present invention that provides a VOX function is a main controller 1110, a plurality of wireless terminals 920, 922, 924, and vehicle radios 930, 932, 934, 936).

One of the plurality of wireless terminals, the first wireless terminal 920 includes a headset 20 and a headset connection terminal 22 connected to the headset 20. The headset 20 is equipped with a communication mode selection switch (not shown). The communication mode selection switch allows the communication mode to be selected. The communication mode consists of transmission, reception and internal calls.

In order to transmit and receive voice signals between the plurality of wireless terminals 920, 922, and 924, the communication mode of the headset 20 is selected as an internal call. In order to transmit and receive voice signals with external wireless networks (950, 952), the communication mode of the headset 20 is set to transmit or receive, and among the communication modes, transmission is maintained only when the communication mode selection switch is pulled, and the communication When the mode selection switch is released, the communication mode is automatically set to receive.

Each of the plurality of wireless terminals 920, 922, and 924 is portable. In the wireless terminal 920, the microphone of the headset wakes up by the strength of the voice signal input to the microphone of the headset 20, and the voice signal input to the microphone is wirelessly transmitted to the main controller 910, and a predetermined time If there is no audio signal input to the microphone during the period, the microphone is turned off.

At this time, the main controller 910 receives communication mode information from the first wireless terminal 920, and when the received communication mode information is an internal call and receives a voice signal from the first wireless terminal 920, the plurality of Vehicle radios 930, 932, which broadcast the received voice signal to the remaining wireless terminals 922 and 924 among wireless terminals, and match the external wireless network one-to-one from the external wireless network 950 or 952 When a voice signal is received through one of 934 and 936), the received voice signal is broadcast to the plurality of wireless terminals 920, 922, and 924.

In addition, the main controller 910 transmits the received communication mode information, and when receiving a voice signal from the first wireless terminal 920, the controller 910 transmits the control through a vehicle radio corresponding to the external wireless battle network selected by the user's operation. 1 The voice signal of the wireless terminal 920 is transmitted to an external wireless network, and the voice signal is also broadcast to the other wireless terminals 922 and 924. When the communication mode information of the helmet is received, the main controller 1110 transmits an external voice signal received through an external wireless network 950 or 952, and a vehicle radio 930, 932, 934 connected to the external wireless network in a one-to-one manner. 936), and broadcasts the received voice signal to the plurality of wireless terminals 920, 922, and 924.

10 shows various selection switches that the main controller may have. The main controller 1010 may include a radio selection switch 1010, a control selection switch 1020, a terminal selection switch 1030, a level adjustment switch 1040, and a power selection switch 1050.

The control selection switch 1020 can always select the volume, VOX, and'volume' is selected when adjusting the volume of the wireless terminal, and'VOX' is a voice call with an external wireless network or between wireless terminals in an internal wireless communication network. It is selected when adjusting the volume in voice communication. 'Normal' is selected for normal normal operation other than'Volume' or'VOX'. The radio selection switch 1220 is used to select one of a plurality of wireless terminals of a mechanized vehicle. The level adjustment switch 1040 is used to set the volume or the level (L, M, H) of the VOX lead sound.

In order to adjust the volume of the wireless terminal 920, the'volume' is selected through the control selection switch 1020, the corresponding wireless terminal 920 is selected through the terminal selection switch 1030, and the level adjustment switch 1040 Select the volume level (L, M, H) through.

In addition, the present invention can communicate with other wireless terminals after wake up the microphone of the headset. At this time, you can set the threshold of the leading sound of the microphone. It provides a microphone hands-free function. At this time, communication with other wireless terminals can be performed through the main controller. In addition, it is possible to set the threshold value of the VOX lead tone by adjusting the level of the VOX lead tone. In order to adjust the level of the VOX lead sound, the VOX is selected through a control function selection switch 1020, the corresponding wireless terminal 920 is selected through the terminal selection switch 1030, and the level adjustment switch 1040 Select the level (L, M, H) of the leading sound through. Here, the leading sound of VOX refers to the user's first voice input through a microphone in the headset of the wireless terminal 920. Since the microphone wakes up through the strength of the first voice, the strength of the voice signal at which the microphone wakes up can be adjusted.

In addition, the radio selector switch 1010 is used to select a vehicle radio that is matched one-to-one with an external radio network when transmitting and receiving a voice signal through an external radio network. In an exemplary embodiment of the present invention, since the vehicle radios R1 to R4 and the external radio network correspond one-to-one, when the vehicle radio is selected, the external radio network is also selected. In addition, since the radio connection terminal 1080 is a connection port that is connected to the vehicle radio by wire, four connection ports are provided. The external antenna cable port 1070 is a port connected to an external antenna installed on an upper part of a mechanized vehicle by a cable. When the external antenna and the main controller are connected by a cable, the communication range can be extended to a radius of 200 m in the embodiment of the present invention.

A power selection switch 1050 that allows you to select any one of a vehicle, a radio, and a battery as a source of the supply power allows you to select the power supplied to the main controller 910, and the main controller 910 converts the power to vehicle power. It can be directly received from a device (not shown), power input to the radio can be supplied as main power, and power can be supplied from a secondary battery that is a spare battery. The terminal status display 1090 indicates the operating status of the terminal. If each wireless terminal is operating normally, it is ON, and if it is not currently in use, it is OFF. The vehicle power input terminal 1060 is a terminal to which main power output from a vehicle power supply (not shown) is input.

11 shows switches provided in wireless terminals according to the present invention. The wireless terminal 920 includes a power/VOX switch 1110, a position selection switch 1120, and a headset connection terminal 1130. The power/VOX switch 1110 allows you to select VOX ON, which can turn on the VOX function for transmitting and receiving voice signals wirelessly, power OFF to cut off the power supply, and power ON to which power is supplied. When power ON is selected through the power/VOX switch 1110, power is supplied to the wireless terminal 1120, and when power OFF is selected through the power/VOX switch 1110, the power supply to the wireless terminal 920 is cut off. If VOX ON is selected through the power/VOX switch 1110, the VOX function for transmitting and receiving voice signals wirelessly through the wireless terminal 920 is activated.

The position selection switch 1120 makes it possible to select a'out of the car' mode or a'in-vehicle' mode. When the'out of the car' mode is selected, the intensity of the transmission signal is increased when the wireless terminal moves to the outside of the mechanized vehicle.

12 is a block diagram showing the configuration of an embodiment of a communication system for a mechanized vehicle providing a rechargeable battery function according to the present invention.

A communication system for a mechanized vehicle that provides a rechargeable battery function according to an embodiment of the present invention includes a vehicle power supply device 1210, a vehicle radio holder 1230, a main controller 1240, and a charging system 1250. The vehicle power supply device 1210 supplies main power to the mechanized vehicle. In the embodiment of the present invention, the main power source may use 18V ~ 32V. The vehicle radio mount 1430 includes a main power input terminal 1232 of the mechanized vehicle, and mounts a plurality of vehicle radios R1, R2, R3, and R4. Each of the vehicle radios R1, R2, R3, and R4 is provided with an antenna (not shown) for transmitting and receiving signals to and from an external wireless network.

The main controller 1240 has a main power input terminal 1245 of a mechanized vehicle, and a vehicle radio input terminal that matches one-to-one with vehicle radios (R1, R2, R3, R4) installed in the vehicle radio mount 1230 ( Power or charging system 1250 provided with 1242, 1244, 1246, 1248 and supplied through vehicle radio input terminals 1242, 1244, 1246, 1248 or main power input terminal 1245 of a mechanized vehicle Power is supplied through the power of the secondary battery charged by ).

The charging system 1250 includes a plurality of secondary batteries 1252, 1254, 1256, and 1258, and is charged by the main power source of the mechanized vehicle. The main power of the mechanized vehicle may be input through the main power controller 1240, the main power input terminal 1245 or the vehicle radio input terminals 1242, 1244, 1246, and 1248. In some cases, it may be necessary to turn off the vehicle power supply device 1210 that supplies power to the mechanized vehicle. For example, if the vehicle should not make a sound when performing an operation, it is necessary to turn off the vehicle power supply. In this case, power may be supplied to the main controller 1240 through the secondary batteries 1252, 1254, 1256, and 1258 of the charging system instead of the main power of the vehicle power supply 1210. To this end, a plurality of secondary batteries 1252, 1254, 1256, and 1258 of the charging system 1250 may be connected in parallel, and the power of the parallel connected batteries may be boosted and supplied to the main controller 1240.

The main controller 1240 may include a power selection switch 1249 for selecting one of a vehicle, a radio, and a battery as a source of the supplied power. When'vehicle' is selected through the power selection switch 1229, power supplied to the main controller 1240 is supplied from the vehicle battery 1210. When'the radio' is selected through the power selection switch 1249, power supplied to the main controller 1240 may be supplied from the vehicle radio. When'battery' is selected through the power selection switch 1249, power supplied to the main controller 1240 may be supplied from the secondary battery of the charging system 1250.

For example, the main controller includes a mother station that plays a role of FP (Fixed Part) in wireless communication method communication and a wireless terminal communication module of a crew member that plays a number of PP (Portable Part) roles, and the communication module is an ambush operation of a tank. In an exhibition or training situation in which the noise of a light tank is directly connected to combat survival, audio and data communication can be enabled through a control switch installed on the front of the main controller and a plurality of spare batteries even after the tank is turned off.

Meanwhile, DECT (Digital Enhanced Cordless Telecommunications) technology is widely used in wireless telephony and is designed for short distances as an access mechanism for major networks. DECT technology provides wireless voice, fax, data and multimedia communications, wireless local area networks and wireless PBXs, and the flexibility that wireless telephony provides has made DECT technology a major standard for applications. The standards for DECT or digitally enhanced telecommunication systems were developed by a member of the European Institute of Telecommunication Standards (ETSI). DECT / GSM interaction has been standardized and basic GSM services can be provided via the DECT air interface.

The communication system for a mechanized vehicle using the DECT method according to the present invention performs wireless communication in the DECT method through the DECT module. In general, the DECT communication system is composed of FP (Fixed Part) and PP (Portable Part).

In an embodiment of the present invention, a PP is installed in each of the six wireless terminals, and FPs corresponding to the PPs of the six wireless terminals are installed in the main controller to communicate with the DECT communication method. 13 is a block diagram illustrating an embodiment of a configuration of a main controller (MCU, 1300) in which six fixed parts (FPs) each equipped with a DECT module are disposed. In an embodiment of the present invention, each of the six fixed parts (FP) includes DECT modules 1310, 1320, 1330, 1340, 1350, and 1360, and is a one-to-one correspondence with six portable parts (PP) to form a pair. Achieve. Six portable parts (PPs) of the present embodiment correspond to six wireless terminals. Referring to FIG. 13, the main controller 1300 may interwork with a PC through RS232 (not shown).

14 is a block diagram showing a detailed configuration of each of the DECT modules 1310, 1320, 1330, 1330, 1350, and 1360 of the FP (Fixed Part). The DECT module (1310, 1320, 1330, 1340, 1350, 1360) is an RF amplifier (1410), RF transmitter and receiver (1420), DIP (1430), CPU (1440), digital signal processor (DSP, 1450), AFE It comprises (1460) and a peripheral device unit (1470). The RF amplification unit 1410 analog amplifies the RF signal transmitted from the RF transceiver 1420 in order to be finally transmitted to the antenna. The RF transceiver 1420 interworks with a dedicated instruction processor (DIP) 1430 and then performs RF data signal processing in an FSK method. The DIP 1430 synchronizes with TDMA timing for transmitting and receiving a baseband signal. The CPU 1640 interworks with the DIP 1430 and the DSP 1450 to manage audio signals along with data communication, and simultaneously control the peripheral 1470 and the like. The digital signal processing unit (DSP, 1450) is a digital signal processing processor that performs analog-to-digital/digital-to-analog conversion of an audio signal and processes digital filters, LECs, and gain controls. to be. The AFE 1660 performs terminal analog processing interlocked with the audio interface device. Peripheral 1670 is a hardware integrated device for controlling external devices such as GPIO, UART, SPI, and I2C.

15 is a block diagram showing a detailed configuration of the digital signal processing unit 1450 of the DECT module included in the main controller (MCU). The DSP Block 1450 of the DECT module according to an embodiment of the present invention includes a digital gain adjustment unit 1710, a line echo canceller 1520, a summing unit 1530, a CODEC LSR 1540, and a CODEC MIC. (1550), an analog gain adjustment unit 1560, a noise filter 1570, and a signal level adjustment unit 1580.

The digital gain control unit 1510 (Auto Gain Control) digitally adjusts and outputs the input voice signal to be within a certain range.

The Line Echo Canceller (1520) compares the voice signal of the transmission path and the voice signal of the reception path, removes the same signal component, and outputs it, and the LINE output signal output from the CODEC LSR (1540) is reflected. It removes the echo signal. The line echo cancellation unit (Line Echo Canceller, 1550) includes a volume control unit (1522), a transmission level detection unit (1554), an echo canceller (1526, Echo Canceller), a suppressor (suppressor, 1528) and a reception level detection unit (1529). Including.

The volume control unit 1522 adjusts and outputs the input signal level. The transmission level detection unit 1524 measures and outputs the size of the transmission signal, and the measured size of the transmission signal is input to the echo canceller 1526 and the suppressor 1528 and is used as a parameter. An echo canceller 1526 compares two input signals, removes signals of the same component, and outputs them. A suppressor 1528 reduces and outputs a signal smaller than a certain size to a smaller size, and removes a noise component generated after Echo Cancelling in the echo canceller 1526. The reception level detector 1529 measures and outputs the magnitude of the received signal, and the measured magnitude of the transmitted signal is used as a parameter in the echo canceller 1526 and the suppressor 1528.

The summator (1530) receives two signals, adjusts the size of each signal, and combines them to output. Here, the signal output from the lane echo removal unit (LEC) 1520, the audio tone signal generated by the internal DSP, and the signal generated by the internal DSP itself may be added and output. The CODEC LSR 1540 converts a digital signal into an analog signal, outputs it to an analog device, and adjusts the signal level.

The CODEC MIC 1550 performs a function of receiving a signal input from an analog device, converting it into a digital signal, and outputting it, and may adjust a signal level. Analog Auto Gain Control (1560) adjusts and outputs the voice signal to be within a certain range. Analog signal processing is performed in conjunction with CODEC MIC (1550). The noise filter 1570 (RFI Filter) is used to remove noise generated in a Time Division Duplex (TDD) system, and is a digital filter. The signal level control unit 1580 adjusts the size of the input signal, and simply adjusts and outputs the signal level before wireless transmission.

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely exemplary, and those of ordinary skill in the art will appreciate that various modifications and other equivalent embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical idea of the attached registration claims.

110: main controller (MCU) 112: radio selection switch
114: external antenna cable input terminal 120: first wireless terminal
122: n-th wireless terminal 10, 12, 14: headset
11, 13, 15: position selection switch 130, 132, 134, 136: vehicle radio
140: internal wireless communication network 150, 160: external wireless network
910: main controller (MCU) 920, 922, 924: wireless terminal
930, 932, 934, 936: vehicle radio 940: internal wireless communication network
20, 23, 24: headset 22: headset connector
950, 952: external wireless network 1010: radio selection switch
1020: control selection switch 1030: terminal selection switch
1040: level adjustment switch 1050: power selection switch
1060: vehicle power input terminal 1070: external antenna cable port
1080: radio connection terminal 1090: terminal status display
1110: Power/VOX switch 1120: Position selection switch
1130: headset connection terminal 1210: vehicle power supply
1230: Vehicle radio mount 1232: Main power input terminal of the mount
1240: main controller (MCU) 1242, 1244: vehicle radio input terminal
1246, 1248: vehicle radio input terminal 1245: main power input terminal
1249: power selection switch 1250: charging system
1252, 1254, 1256, 1258: secondary battery

Claims (11)

In a mechanized vehicle communication system in which a plurality of crew members of a mechanized vehicle support communication between crew members or external communication networks inside or outside the mechanized vehicle through a wireless terminal
A plurality of vehicle radios installed inside the mechanized vehicle, corresponding to a plurality of external wireless networks in a one-to-one correspondence, having an external antenna for communication with the outside of the mechanized vehicle, and transmitting and receiving signals through the external wireless network;
A main controller having a radio selection switch for selecting one of the plurality of vehicle radios, and connected to the vehicle radio by wire; And
It supports wireless communication between the crew of the mechanized vehicle and external wireless network and wireless communication through the vehicle radio, and is portable, equipped with a headset, and a communication mode (transmission, reception, internal communication) attached to the headset is a transmission mode. If selected as, the transmission key value including the selected transmission mode information is transmitted to the main controller,
The main controller receives a transmission key value from the headset of the wireless terminal after the vehicle radio is selected by operation of the radio selection switch, and when the voice and data signals are received from the radio terminal, the voice and the vehicle radio selected through the radio selection switch Transmit data signals, and transmit voice and data signals received from vehicle radios to wireless terminals,
When the vehicle radio receives a voice signal from the main controller, it transmits voice and data signals to an external wireless network corresponding to one-to-one, and transmits the voice and data signals received from the external wireless network to the main controller,
The wireless terminal has a position selection switch that selects whether the wireless terminal is inside the mechanized vehicle (in the vehicle) or outside the mechanized vehicle (outside the vehicle), and the hatch is closed in an exhibition or training situation, and the wireless terminal is machined When located inside a vehicle, the signal strength is controlled so that the signal propagated through the antenna of the wireless terminal reaches within the turning radius of the mechanized vehicle and is protected from radio interception or eavesdropping, and when the wireless terminal is moved out of the vehicle When the position selection switch is selected out of the vehicle by operation, the strength of the transmission signal transmitted through the antenna increases, and an external movement signal informing that the position is moved outside the mechanized vehicle is transmitted to the main controller,
When the main controller receives the external mobile signal from the wireless terminal, the strength of the transmission signal through the antenna is increased for wireless communication with the wireless terminal, and the mother station serving as a fixed part (FP) in the wireless communication method is connected to the wireless terminal. It has a communication module that communicates with the installed PP (Portable Part),
The communication module includes a dedicated instruction processor (DIP) that synchronizes a transmission/reception signal with a time division multiple access (TDMA) timing for transmitting and receiving a baseband signal with the wireless terminal, and an analog/digital (A/D) or D/A of the audio signal. Equipped with a line echo removal unit that performs (Digital/Analog) conversion, compares the voice signal of the transmission path with the voice signal of the reception path, removes the same signal component, and outputs it, and removes the echo signal that is reflected from the line output signal. Mechanized vehicle communication system using a wireless communication method, characterized in that it comprises a digital signal processing unit (DSP). delete The method of claim 1, wherein the main controller
And a frequency power automatic measuring device for monitoring the radio wave strength of the wireless terminal in real time and detecting that the wireless terminal moves out of the vehicle through the radio wave strength of the wireless terminal, and the radio frequency power through the automatic frequency power measuring device A communication system for a mechanized vehicle using a wireless communication method, characterized in that when it is detected that the terminal is moved out of the vehicle, the intensity of a transmission signal through an antenna is increased for wireless communication with the wireless terminal. The method of claim 1 or 3, wherein the main controller
The external antenna is provided with an external antenna cable port, further comprising an external antenna connected to the external antenna cable port and located above the machined vehicle, and increasing the intensity of a transmission signal through the external antenna A communication system for a mechanized vehicle using a wireless communication method, characterized in that it is possible to expand a communication area with a center. The method of claim 1 or 3,
When the wireless terminal moved out of the car is referred to as an external wireless terminal, the external wireless terminal is
When a communication mode (transmission, reception, internal communication) switch attached to the headset of the external wireless terminal is selected as a transmission mode, a transmission key value including the selected transmission mode information is transmitted to the main controller,
The main control is
After selecting a vehicle radio that is matched one-to-one with an external wireless network by the user's operation of the radio selection switch, receiving a transmission key value from the headset of the external wireless terminal and receiving a voice signal from the external wireless terminal, the radio selection switch Transmits voice and data signals to the selected vehicle radio via
The vehicle radio is
A communication system for a mechanized vehicle using a wireless communication method, characterized in that when receiving the voice and data signals from the main controller, the voice and data signals are transmitted to an external wireless network corresponding to one-to-one. The method of claim 1, wherein the communication module of the main controller
The communication module is a communication system for a mechanized vehicle using a wireless method, characterized in that it is possible to support audio and data communication through a control switch and a plurality of spare batteries installed in the main controller even after the vehicle is turned off in an exhibition or training situation. delete delete delete delete delete

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