KR101658931B1 - Device for receiving a remote signal - Google Patents

Device for receiving a remote signal Download PDF

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Publication number
KR101658931B1
KR101658931B1 KR1020150061354A KR20150061354A KR101658931B1 KR 101658931 B1 KR101658931 B1 KR 101658931B1 KR 1020150061354 A KR1020150061354 A KR 1020150061354A KR 20150061354 A KR20150061354 A KR 20150061354A KR 101658931 B1 KR101658931 B1 KR 101658931B1
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South Korea
Prior art keywords
remote control
control signal
vehicle
vehicle remote
modulated
Prior art date
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KR1020150061354A
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Korean (ko)
Inventor
김종민
노찬호
손정택
이성진
임경모
김현욱
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세기 리미티드
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/10—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles actuating a signalling device
    • B60R25/102—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles actuating a signalling device a signal being sent to a remote location, e.g. a radio signal being transmitted to a police station, a security company or the owner
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/20—Means to switch the anti-theft system on or off
    • B60R25/209—Remote starting of engine
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/44—Transmit/receive switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H04B2001/44—
    • H04B2001/707—
    • H04B2001/713—

Abstract

The present invention relates to a remote control signal receiver for a vehicle, capable of receiving a vehicle remote control signal, which is modulated based on each different modulation method, to be processed. The remote control signal receiver for a vehicle comprises a radio frequency (RF) switching part, a surface acoustic wave (SAW) filter, an RF transceiver, a micro-controller and a line interface part. The RF switching part is connected with an antenna to switch a signal transmission and reception path. The SAW filter removes an unnecessary signal factor from the vehicle remote control signal transferred through the RF switching part. The RF transceiver includes a plurality of modems required to decode the vehicle remote control signal modulated based on each different modulation method, which is output from the SAW filter. The micro controller controls the RF switching part in accordance with a signal transmission mode and a reception mode and selectively activates the modems in the signal transmission mode or the signal reception mode. The line interface part interfaces the vehicle remote control signal, which is modulated in the RF transceiver under the control of the micro controller, to an external device.

Description

≪ Desc / Clms Page number 1 > DEVICE FOR RECEIVING A REMOTE SIGNAL &

The present invention relates to a vehicle remote control system, and more particularly to a remote control signal receiver capable of receiving and processing modulated vehicle remote control signals based on different modulation schemes.

The remote control system of the vehicle allows the driver to start the engine by operating the remote control remote from outside the vehicle, thereby making it possible to start the engine in advance from the outside of the vehicle, Device. Such a remote control system is usually operated with various additional functions such as remote start, as well as theft prevention, door locking / door opening and trunk opening.

The remote control system includes a remote control remote control carried by a user and a remote control signal receiver for receiving a remote control signal transmitted from the remote control remote control and transmitting the remote control signal to a vehicle BCM (Body Control Module). The remote control signal receiver transmits state information of the vehicle (shock detection, door open state, etc.) to the remote starter, and transmits the state information of the remote control signal receiver to the remote controller Remote control system of bidirectional communication method that displays on starter is also widely used.

One of AM, ASK, FSK, DSSS, and FHSS modulation schemes is used for the remote control signal for two-way communication as well as the one-way communication. FHSS modulation method, which greatly improves the distance performance, is widely used in North America. The FHSS modulation scheme is superior in distance performance and stability compared to the existing FM modulation scheme.

On the other hand, direct sequence spread spectrum based modulation

Figure 112015042301741-pat00001
The technology is capable of demodulating to noise levels of less than 20dB, which in turn creates a robust network link with high sensitivity, increases network efficiency and eliminates interference. Such
Figure 112015042301741-pat00002
Due to the advantages of the technology, it is necessary to implement the M2M (Machine-to-Machine)
Figure 112015042301741-pat00003
Technology-based chipsets will be widely deployed, and remote control systems that require two-way communication
Figure 112015042301741-pat00004
Technology-based transceivers are expected to be applied.

Generally, in the remote control system trading market, it is common to provide a remote control remote control capable of bidirectional communication with a main remote control and a remote control remote control capable of unidirectional communication with a sub remote control in consideration of cost.

However, the stronger the external interference signal, the stronger the encryption

Figure 112015042301741-pat00005
If a technology-based chipset manufacturer excludes a unidirectional communication chipset for a remote control system and manufactures and sells chipsets for bidirectional communication only, the concept of main remote control and secondary remote control will disappear and buyers will have to endure the cost increase, and the existing FHSS modulation The utilization of the communication chipset using the method will also be lowered.

Therefore, compared with FHSS modulation method, it is strong against external interference signal,

Figure 112015042301741-pat00006
It is necessary to develop a new type of remote control signal receiver capable of accommodating both bidirectional and unidirectional communication functions of existing FHSS system while accommodating technology-based two-way communication function.

Korean Patent Publication No. 10-1494412

Accordingly, it is an object of the present invention to provide a remote control signal receiver capable of receiving and modulating a modulated vehicle remote control signal and interfacing with a vehicle control module based on different modulation schemes. .

Still another object of the present invention is to provide a remote control signal receiver capable of receiving a bidirectional remote control signal as well as a bidirectional remote control signal to interface with a vehicle control module.

According to an aspect of the present invention, there is provided a vehicle remote control signal receiver including:

An RF switching unit connected to the antenna to switch a signal transmission / reception path;

A SAW filter for removing an unnecessary signal component from a vehicle remote control signal transmitted through the RF switching unit;

An RF transceiver including a plurality of modems required to demodulate a modulated vehicle remote control signal based on different modulation schemes output from the SAW filter;

A microcontroller for controlling the RF switching unit according to a signal transmission mode and a reception mode, and selectively activating the plurality of modems in a signal reception mode or a signal transmission mode;

And a line interface unit for interfacing the demodulated vehicle remote control signal from the RF transceiver to an external device under the control of the microcontroller.

Further, the above-described vehicle remote control signal receiver,

A filter for removing a harmonic component from a signal modulated by one of the plurality of modems and transmitting the harmonic component to the RF switching unit;

And a power supply unit for converting the power supplied from the vehicle battery into a system operation power and supplying the converted power to the system operation power supply.

In addition, in the above-described vehicle remote control signal receivers, the plurality of modems include a first modem for demodulating a vehicle remote control signal modulated based on at least a direct sequence spread spectrum method, and a second modem for demodulating the modulated vehicle remote control signal based on the frequency hopping spread spectrum method And a second modem for demodulating the remote control signal,

The microcontroller is further characterized by alternately activating the plurality of modems in a signal receiving mode.

In addition, the microcontroller switches to a transmission mode when vehicle status data is transmitted through the line interface unit, activates one of the plurality of modems, and performs radio transmission control of the vehicle status data.

According to an embodiment of the present invention, a vehicle remote control signal receiver according to an embodiment of the present invention is characterized in that it is stronger than an FHSS modulation method,

Figure 112015042301741-pat00007
A useful invention having the effect of receiving and processing a remote control signal transmitted from a remote controller for bi-directional or unidirectional remote control, which is a conventional FHSS system, while receiving a remote control signal transmitted from a remote control for technology-based two- to be.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram illustrating an example of a use state of a vehicle remote control signal receiver according to an embodiment of the present invention. FIG.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]
3 is a diagram illustrating a detailed configuration of a vehicle remote control signal receiver 200 in FIG.
4 is a flowchart illustrating an operation of a vehicle remote control signal receiver according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

The term "vehicle remote control signal" refers to a series of signals transmitted from a bidirectional or unidirectional remote starter to remotely control the vehicle, that is, signals of "door lock / open, trunk opening, define.

In the following embodiments, a vehicle remote control signal modulated based on a direct sequence spread spectrum (DSSS) method and a vehicle remote control signal modulated based on a frequency hopping spread spectrum (FHSS) method are exemplified by using different modulation schemes , The AM (ASK), and the FM (FSK) method.

FIG. 1 illustrates a state of use of a vehicle remote control signal receiver according to an embodiment of the present invention. A vehicle remote control signal receiver 200 according to an exemplary embodiment of the present invention is installed in a vehicle and includes a remote controller for bidirectional or unidirectional remote control (E.g., a vehicle body control module (BCM)) corresponding to an external device by receiving the vehicle remote control signal transmitted from the vehicle control module 100. And transmits the state data of the vehicle transmitted from the vehicle control module to the remote controller 100 for bidirectional remote control. Here, the vehicle state data is data indicating the state of the vehicle requested by the user of the remote controller 100 for remote control.

FIG. 2 illustrates a block configuration around a vehicle remote control signal receiver 200 according to an embodiment of the present invention, and FIG. 3 illustrates a detailed configuration diagram of a vehicle remote control signal receiver 200 in FIG.

2, a vehicle remote control signal receiver 200 according to an embodiment of the present invention includes a remote controller 1 (100) for two-way remote control corresponding to a main remote controller, And can receive the vehicle remote control signal from the remote control remote controller 2 150 corresponding to the sub remote controller. The remote control remote controller 2 (150) corresponding to the auxiliary remote controller may be a two-way remote control remote controller or a one-way remote control remote controller. In the embodiment of the present invention, an embodiment will be described assuming that the secondary remote controller is also a remote controller for bidirectional remote control.

In the embodiment of the present invention, the two-way remote control remote controller 1 (100) corresponding to the main remote controller transmits a modulated vehicle remote control signal based on the direct sequence spread spectrum (DSSS) 2 150 transmits the modulated vehicle remote control signal based on the frequency hopping spread spectrum (FHSS) scheme.

The remote controller 1 (100) for remote control corresponding to the main remote controller and the remote controller 2 (150) for remote control corresponding to the auxiliary remote controller are connected to a remote controller (not shown) for transmitting the modulated vehicle remote control signal based on different modulation schemes Any remote control can be used. Also, since the modulated vehicle remote control signals are transmitted from the different remote control remote controllers based on different modulation schemes, the receiver 200 requires a plurality of modems for demodulating the respective ones. This will be described later.

The BCM 300 shown in FIG. 2 receives the vehicle remote control signal from the vehicle remote control signal receiver 200 as a vehicle body control module and controls the respective parts of the vehicle. If necessary, 200 to be transmitted to the remote controller 1 and / or 2 (100, 150) for bidirectional remote control.

3, the configuration of the vehicle remote control signal receiver 200 will be described in detail. First, the RF switching unit 205 is connected to the antenna and switches the signal transmission / reception path under the control of the microcontroller 230. FIG. That is, in the transmission mode, the LC filter 240 and the antenna ANT are connected, and in the reception mode, the antenna ANT and the SAW filter 210 are connected.

The SAW filter 210 removes unnecessary frequencies from the vehicle remote control signal transmitted through the RF switching unit 205,

The RF transceiver 220 demodulates and outputs the modulated vehicle remote control signal based on different spread spectrum schemes output from the SAW filter 210. To this end, the RF transceiver 220 includes a first modem (e. G., A first modem) for demodulating the modulated vehicle remote control signal based on a direct sequence spread spectrum scheme

Figure 112015042301741-pat00008
And a second modem (FSK modem) 214 for demodulating the modulated vehicle remote control signal based on the frequency hopping spread spectrum scheme. These modems are alternately activated by the micro controller 230 in the signal receiving mode to demodulate the received vehicle remote control signal.

The microcontroller 230 controls the RF switching unit 205 according to the signal transmission mode and the reception mode, and selectively activates the plurality of modems in the signal reception mode or the signal transmission mode. The microcontroller 230 transfers the demodulated vehicle remote control signal from the RF transceiver 220 to the vehicle control module BCM 300 as an external device via the line interface (I / F) And transmits the vehicle status data transmitted through the interface unit 255 to the RF transceiver 220.

In addition, the microcontroller 230 switches to the transmission mode when there is vehicle status data transmission through the line interface unit 255, and activates one of the plurality of modems to perform radio transmission control of the vehicle status data.

The line interface unit 255 interfaces the demodulated vehicle remote control signal from the RF transceiver 220 to the external device (BCM 300) under the control of the microcontroller 230.

The vehicle remote control apparatus according to the embodiment of the present invention may include an LC filter 240 for removing harmonic components from a signal modulated by one of the plurality of modems and delivering the harmonic components to the RF switching unit 205, , And a power supply unit 250 for converting the power supplied from the vehicle battery into a system operation power supply.

An oscillator 1 225 for providing an oscillation clock of 32 MHz to an RF transceiver 220 such as a general vehicle remote control signal receiver and an oscillator 2 235 for providing a system clock of 8 MHz to the microcontroller 230 Include basically.

Hereinafter, the operation of the vehicle remote control signal receiver 200 having the above-described configuration will be described in detail with reference to FIG.

FIG. 4 illustrates a flow chart for explaining the operation of the vehicle remote control signal receiver 200 according to the embodiment of the present invention.

3 and 4, the microcontroller 230 of the vehicle remote control signal receiver 200 determines whether the receiver operation mode is the transmission mode (step S10). The transmission mode is set to the transmission mode in response to a request for status data transmission from the remote controller for bidirectional remote control or when an impact is applied to the vehicle to inform the user of the transmission.

If it is determined to be the transmission mode or to change to the transmission mode, the microcontroller 230 proceeds to step S15 and controls the RF switching unit 205 to select the transmission path. The vehicle status data is received from the vehicle control module (BCM) 300 through the line interface unit 255 and transmitted to the remote controller 1 or 2 (100, 150) for bidirectional remote control (S20).

On the other hand, if it is determined that the transmission mode is not selected, the microcontroller 230 switches to the reception mode (step S25), selects the reception path by controlling the RF switching unit 205, And alternately activates a plurality of modems provided to check whether there is reception of the modulated vehicle remote control signal based on the spectral method.

That is, in step S30, the microcontroller 230 activates the first modem 212 to demodulate the modulated vehicle remote control signal based on the direct sequence spread spectrum scheme. If the vehicle remote control signal is transmitted from the remote controller for remote control 1 100, which is the main remote controller, with the first modem 212 activated, the remote control signal is transmitted to the SAW filter 210 through the RF switching unit 205 And then transmitted to the first modem 212 of the RF transceiver 220 after the unnecessary frequency components are removed, and are demodulated through a series of signal processing processes.

For reference, the first modem 212

Figure 112015042301741-pat00009
In the case of a modem, it checks whether there is reception of a vehicle remote control signal while sequentially changing the seven channels provided in the specification. When the vehicle remote control signal packet is normally received, the first modem 212 transmits the received vehicle remote control signal packet to the micro controller 230 in step S35 so that the micro controller 230 transmits the received vehicle remote control signal to the line interface unit 255 To the BCM 300 (step S40).

The BCM 300 controls the vehicle according to the vehicle remote control signal and transmits vehicle state data to the microcontroller 230 through the line interface 255 if the vehicle state data should be returned to the remote control 1 100. [ . In this case, the operation mode of the receiver 200 is again switched to the transmission mode according to the control of the microcontroller 230 (step S10), and the operations of steps S15 and S20 are performed.

On the other hand, if the vehicle remote control signal is not received in step S35, the micro controller 230 proceeds to step S45 to activate the second modem 214. [ The second modem 212 is an FSK modem for demodulating a modulated vehicle remote control signal based on a frequency hopping spread spectrum method, and checks whether there is reception of a vehicle remote control signal by sequentially changing 25 channels.

The second modem 214 transmits the vehicle remote control signal packet to the microcontroller 230 in step S50 and the microcontroller 230 transmits the received vehicle remote control signal to the line interface unit 255 to the BCM 300 and the above-described step S40 is performed.

The steps S10 to S60 are repeated until the power is turned off so that the vehicle remote control signal receiver 200 according to the embodiment of the present invention is modulated based on different spread spectrum methods in the main remote controller and the sub remote controller, It is possible to normally receive and process the vehicle remote control signal to be transmitted.

Accordingly, the present invention provides a bidirectional remote control remote controller based on LoRa technology that is robust against external interference signals and enhanced encryption compared to the FHSS modulation method, while receiving a remote control signal transmitted from the vehicle, The vehicle remote control signal transmitted from the vehicle can be received and processed.

Of course, if an RF transceiver is used that includes a plurality of modems capable of receiving and processing the vehicle remote control signals modulated in both ways, if the schemes used to modulate the vehicle remote control signals in a particular country are FSK and DSSS, The same effects as those of the present invention can be obtained.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Accordingly, the true scope of the present invention should be determined only by the appended claims.

Claims (8)

An RF switching unit connected to the antenna to switch a signal transmission / reception path;
A SAW filter for removing an unnecessary signal component from a vehicle remote control signal transmitted through the RF switching unit;
An RF transceiver including a plurality of modems required to demodulate a modulated vehicle remote control signal based on different modulation schemes output from the SAW filter;
A microcontroller for controlling the RF switching unit according to a signal transmission mode and a reception mode, and selectively activating the plurality of modems in a signal reception mode or a signal transmission mode;
And a line interface for interfacing the demodulated vehicle remote control signal from the RF transceiver to an external device under the control of the microcontroller. 2. The apparatus of claim 1, further comprising: a filter for removing a harmonic component from a signal modulated by one of the plurality of modems and transmitting the signal to the RF switching unit;
Further comprising: a power supply for converting the power supplied from the vehicle battery into a system operation power and supplying the power to the system. The method of claim 1 or 2, wherein the plurality of modems include a first modem for demodulating a vehicle remote control signal modulated based on at least a direct sequence spread spectrum scheme, a first modem for demodulating a vehicle remote control signal modulated based on a frequency hopping spread spectrum scheme, And a second modem for demodulating the signal. The vehicle remote control signal receiver of claim 1 or 2, wherein the microcontroller alternately activates the plurality of modems in a signal receiving mode. The microcontroller according to claim 1 or 2, wherein when the vehicle status data is transmitted through the line interface unit, the microcontroller switches to a transmission mode and activates one of the plurality of modems to wirelessly control the vehicle status data Vehicle remote control signal receiver. The vehicle remote control signal receiver of claim 1 or 2, further comprising a plurality of remote control remote controls for transmitting modulated vehicle remote control signals based on different modulation schemes. The remote control system according to claim 6,
A main remote controller for transmitting a modulated vehicle remote control signal based on a direct sequence spread spectrum system and a sub remote controller for transmitting a modulated vehicle remote control signal based on a frequency hopping spread spectrum system, Signal receiver. The method of claim 1 or 2, wherein the plurality of modems include a first modem for demodulating a vehicle remote control signal modulated based on at least a direct sequence spread spectrum scheme, and a second modem for modulating the modulated vehicle remote control signal based on a Frequency Shift Keying (FSK) And a second modem for demodulating the vehicle remote control signal.
KR1020150061354A 2015-04-30 2015-04-30 Device for receiving a remote signal KR101658931B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108183847A (en) * 2018-01-17 2018-06-19 江苏徐工信息技术股份有限公司 The engineer machinery operation tele-control system and method for a kind of low time delay
KR20220060832A (en) * 2020-11-05 2022-05-12 피에이치에이 주식회사 Radar and car control apparatus using it

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Publication number Priority date Publication date Assignee Title
JP3694196B2 (en) * 1999-07-29 2005-09-14 日本電信電話株式会社 Software defined radio
KR100756179B1 (en) * 2006-01-09 2007-09-05 주식회사 팬택 A mobile communication terminal having a active rfid transponer
KR20090083104A (en) * 2008-01-29 2009-08-03 삼성전자주식회사 Method and circuit for controling reception path of multi-standby terminal
KR20120121662A (en) * 2011-04-27 2012-11-06 에스케이텔레콤 주식회사 Wireless Ethernet transmission apparatus and method for traffic transmitting in the apparatus
KR101494412B1 (en) 2013-02-08 2015-02-23 주식회사 피엘케이 테크놀로지 Complex remote engine start system through multi-chnnel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3694196B2 (en) * 1999-07-29 2005-09-14 日本電信電話株式会社 Software defined radio
KR100756179B1 (en) * 2006-01-09 2007-09-05 주식회사 팬택 A mobile communication terminal having a active rfid transponer
KR20090083104A (en) * 2008-01-29 2009-08-03 삼성전자주식회사 Method and circuit for controling reception path of multi-standby terminal
KR20120121662A (en) * 2011-04-27 2012-11-06 에스케이텔레콤 주식회사 Wireless Ethernet transmission apparatus and method for traffic transmitting in the apparatus
KR101494412B1 (en) 2013-02-08 2015-02-23 주식회사 피엘케이 테크놀로지 Complex remote engine start system through multi-chnnel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108183847A (en) * 2018-01-17 2018-06-19 江苏徐工信息技术股份有限公司 The engineer machinery operation tele-control system and method for a kind of low time delay
KR20220060832A (en) * 2020-11-05 2022-05-12 피에이치에이 주식회사 Radar and car control apparatus using it
KR102423562B1 (en) * 2020-11-05 2022-07-25 피에이치에이 주식회사 Radar and car control apparatus using it

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