KR100699721B1 - Passive Entry and Passive start apparatus for vehicles - Google Patents

Abstract

A PASE(Passive Entry & Passive Start) device for a vehicle is provided to open a door only by a passive action of a user having a portable terminal and holding a door handle and to lock the door just by pressing a door locking button. A PASE device(1) for a vehicle(2) comprises a fixed terminal(40) installed in the vehicle and a portable terminal(20) carried by a user and locks/unlocks a door by bidirectional wireless communications between the fixed and portable terminals or starts/stops an engine. When a passive action of the user is detected by a sensor installed at a key switch module or a door handle of the vehicle, a PMM(Power Management Module,50) installed in the vehicle transmits an LF(Low Frequency) question signal to the portable terminal through the fixed terminal correspondently to the detected signal. An RF(Radio Frequency) response signal transmitted from the portable terminal is received and an ID(Identification) code is demodulated from the RF response signal. And then, the demodulated ID code is transmitted to the PMM. When the ID code of the portable terminal is matched with a registered ID code, the PMM transmits a control signal to a BCM(Body Control Module,33) and an EMS(Engine Management System,35) electrically connected to lock/unlock the door or start/stop the engine.

Description

Passive entry and passive start apparatus for vehicles}

1 is a plan view showing a vehicle equipped with a passive door / starting device for a vehicle according to the present invention,

2 is a block diagram showing a vehicle faucet door / starter according to the present invention,

3 is a block diagram showing a power control module (PMM) according to the present invention;

4 is a flowchart illustrating a door unlock operation according to the present invention;

5 is a flowchart illustrating a door lock operation according to the present invention;

6 is a flowchart illustrating an engine start operation according to the present invention.

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

1: Passive door / starter device for a vehicle of the present invention

11, 15: Sensor 16: Start button

17: door lock button 20: mobile terminal

33: Body Control Module (BCM)

35: EMS (Engine Management System)

40: fixed terminal 43: door module

50: Power Management Module (PMM)

The present invention relates to a door / start device for a vehicle, and more particularly, when a user possessing a portable terminal holds a door handle of a vehicle or presses a start button, bidirectional communication is performed between the fixed terminal installed in the vehicle and the portable terminal. After authentication of the ID of the portable terminal by the power control module (PMM) electrically connected to the fixed terminal, the engine is started by controlling the door module to lock / unlock the door or controlling the key switch module. The present invention relates to a passive door / starting device for a vehicle that starts / stops.

In general, a door / start device for a vehicle inserts and rotates a mechanical key into a slot, or locks / unlocks a door or starts / stops an engine by pressing an operation button of a portable terminal. Therefore, the conventional vehicle door / starting device requires an active operation such as a user taking out a mechanical key or a portable terminal, inserting and turning it into a key slot, or pressing a button of the portable terminal. However, this active operation is cumbersome for the user.

Meanwhile, the conventional keyless door / starting device locks / unlocks a door only by the user approaching or away from the vehicle by bidirectional wireless communication between the fixed terminal installed in the vehicle and the portable terminal carried by the user. As such, the automatic entry / lock of the door by two-way communication between the mobile terminal and the fixed terminal without active operation of the user is called a passive entry. In addition, starting / stopping the engine by pressing the start button instead of inserting the mechanical key into the key slot is called passive start.

However, the conventional passive entry / passive device (PASE: Passive Entry & Passive start) has a problem in that the bidirectional communication between the portable terminal and the fixed terminal must be continuously maintained, thereby shortening the life of the battery embedded in the portable terminal. In addition, the conventional passive door / start device has a problem in that the door is locked / unlocked in a situation where the user does not want to operate because the user is automatically operated when the user approaches or moves away from the vehicle.

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art, and a main object of the present invention is to allow a user carrying a mobile terminal to touch or pull a door handle of a vehicle, that is, a vehicle by passive operation. When the wireless communication is established between the fixed terminal installed in the terminal and the portable terminal carried by the user and the ID code of the portable terminal and the fixed terminal matches, the vehicle passive door / starter which locks / unlocks or starts / stops the door To provide.

That is, according to the present invention, the door / start device is automatically operated by a passive action in which the user grabs or pulls the door handle to open the door, so that the user presses the operation button or presses a button installed on the door handle. The active action of pressing can be omitted, thereby providing a passive door / start device for a vehicle with improved user convenience.

In addition, the present invention can minimize the consumption of the battery built in the portable terminal by allowing two-way wireless communication between the fixed terminal and the portable terminal only when the user has a passive operation to hold or pull the door handle. Provided is a passive door / start device for a vehicle which can prevent the door from being locked / unlocked in a non-circumstance.

In order to achieve the above object, a vehicle passive door / starting apparatus according to the present invention comprises a fixed terminal installed in a vehicle and a portable terminal carried by a user, and the door is opened by two-way wireless communication between the fixed terminal and the portable terminal. A vehicle door / starter that locks / unlocks or starts / stops an engine,

When a user's passive behavior is detected by a sensor installed in a door handle or a key switch module of the vehicle, the power control module (PMM) installed in the vehicle responds to the received detection signal. Is transmitted to the mobile terminal, and when the RF response signal transmitted by the mobile terminal is received, the ID code is demodulated from the RF response signal and transmitted to the power control module (PMM), and the power control module (PMM) receives the received mobile terminal. When the ID code and the registered ID code is identical, the control signal is transmitted to the electrically connected BCM (Body Control Module) and EMS (Engine Management System) to lock / unlock the door or start / stop the engine. .

 One embodiment of the present invention, the sensor is installed on the door handle of the vehicle for detecting a user to touch or pull the door handle; A power control module (PMM) electrically connected to receive the detection signal of the detection sensor; A fixed terminal connected to communicate with the power control module (PMM); A body control module (BCM) electrically connected to the power control module (PMM); It characterized in that it comprises a plurality of door modules electrically connected to the BCM.

Another embodiment of the present invention, the sensor is installed in the key switch module of the vehicle for detecting the user pressing the start button; A power control module (PMM) electrically connected to receive the detection signal of the detection sensor; A fixed terminal electrically connected to communicate with the power control module (PMM); And an EMS (Engine Management System) electrically connected to the power control module (PMM).

In the present invention, the detection sensor is a hall sensor for detecting the frequency generated by the capacitance of the human body, or a pressure sensor for detecting the contact pressure of the user. In addition, the detection sensor includes a transmission module for transmitting a detection signal to the power control module (PMM).

In the present invention, the portable terminal includes an LF receiving module for receiving the LF question signal transmitted from the fixed terminal; An LF signal processor which generates an ID code in response to the LF question signal and generates an RF response signal by modulating the ID code into the question signal; An RF transmission module for transmitting an RF response signal including the ID code to the fixed terminal; It includes a battery for supplying power to the signal processing means and the transmission and reception module.

In the present invention, the fixed terminal comprises: an LF transmission module for transmitting an LF question signal to the portable terminal in response to a request from a power control module (PMM); An RF receiving module for receiving an RF response signal transmitted from the portable terminal; An RF signal processor for demodulating an ID code from the RF response signal of the portable terminal; And a transmission module for receiving the question signal request from the power control module (PMM) and transmitting a demodulated ID code to the power control module (PMM).

In the present invention, the power control module (PMM) includes a detection signal receiving module for receiving a detection signal transmitted from a detection sensor installed in the door handle and the key switch module; A transmission and reception module for requesting a question signal to the fixed terminal in response to the detection signal and receiving an ID code transmitted from the fixed terminal; A central control unit for comparing the ID code transmitted from the fixed terminal with a registered ID code and generating a control signal for operating the door or the engine; A PCM that receives the brake pedal, side brake, gear position, and vehicle speed information signals to control the ACC, ignition 1, 2, and start power relay signals; A BCM having a plurality of door modules electrically connected thereto; It consists of an ESL in which the engine motor and the immobilizer are electrically connected.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the vehicle passive door / start device according to the present invention.

First, FIG. 1 is a plan view of a passenger vehicle equipped with a passive door / starting device for a vehicle according to the present invention, and FIG. 2 is a schematic passive door / starting device showing a passive door / starting device 1 for a vehicle according to the present invention. It is a schematic diagram showing.

As shown, the vehicle passive door / starting device 1 of the present invention is largely a portable terminal 20 carried by a user, and a fixed terminal mounted on the vehicle 1 to enable bidirectional communication with the portable terminal 20. 40, the sensor (11) (15), the BCM (33), the EMS (35), the door module mounted on the vehicle (1) and installed on the door handle and the key switch module, including the fixed terminal (40). And a PMM 50 electrically connected to the 34, the ESCL 32, and the like.

Referring to FIG. 1, the vehicle passive door / starting device 1 of the present invention is installed on each door handle 3 of the vehicle 2, and a plurality of door handle detection sensors 11 for detecting whether a user is in contact with each other. And an ignition detection sensor 15 installed in the key switch module 5 of the vehicle 2 to detect whether the user inserts the portable terminal 20 into a key slot or presses a start button. ) Is installed. In addition, the detection sensors 11 and 15 are electrically connected to the power control module (PMM) 50.

The fixed terminal 40 is electrically connected to the power management module (PMM) 50 and includes an antenna 41 to enable two-way wireless communication with the portable terminal 20. The LF antenna 41 of the fixed terminal 40 is preferably installed in the door handle and trunk door handle of each door and the interior of the vehicle 2, respectively. In addition, a plurality of door modules 34 are electrically connected to the BCM 33 so as to correspond to the respective doors.

The sensors 11 and 15 installed in the door handle 3 or the key switch module 5 detect whether the user touches the door handle 3 or the portable terminal is inserted into a key slot. A hall sensor for detecting a change in capacitance, or a pressure sensor for detecting whether the user pulls the door handle 3 or presses a start button.

In addition, preferably the BCM, EMS, ESCL, PCM and the fixed terminal electrically connected to the power control module (PMM) using any one method selected from a controller area network (CAN), K-Line, Hard Wire method To transmit the data. In addition, the power control module (PMM), as shown in Figure 3, has a separate installation portion that is detachably installed RF receiver 59 capable of one-way wireless communication.

Next, referring to FIG. 2, the fixed terminal 40 transmits and receives a transmission / reception module 43 for data communication with the power control module (PMM) 50 and a question signal transmitted from the power control module (PMM). An LF signal processor 45 for generating an LF question signal in response to a request, an LF transmitter module 46 for transmitting an LF question signal to the mobile terminal 20, and an RF transmitted from the mobile terminal 20 RF receiving module 47 for receiving the response signal and the RF signal processor 48 for demodulating the ID code from the RF response signal received from the portable terminal 20 to the power control module (PMM) do.

The portable terminal 20 generates and receives an ID code in response to the LF receiver 26 receiving the LF question signal transmitted from the fixed terminal 40 and the question signal transmitted from the fixed terminal 40. An RF signal processor 27 for generating an RF response signal modulated with an ID code to the question signal, an RF transmitter 28 for transmitting the RF response signal to the fixed terminal 40, and the signal processor 27 And a battery 29 for supplying power to the transmission and reception modules 26 and 28.

3 is a block diagram showing a power management module (PMM) 50 according to the present invention. As shown, the power control module (PMM) 50 transmits from the ignition detection sensor 15 and the first interface 52 for receiving a detection signal transmitted from the door handle detection sensor 11. A second interface 54 for receiving the sensed signal and communicating with the immobilizer control 53 and the PCM 55, and corresponding to the sensed signal received through the first or second interface 52, 54 A third interface 56 for requesting a question signal to the fixed terminal 40 and receiving an ID code transmitted from the fixed terminal 40, and an ID code and a memory 58 transmitted from the fixed terminal 40. The central control unit 57 and the central control unit 57, the BCM 33 and the EMS 35 which generate a control signal according to the vehicle information transmitted from the PCM 55 as well as comparing with the ID code stored in the control unit. A fourth interface 62 for communicating with an external module such as And a fifth interface 64 for communication between the immobilizer 53 and the ESCL 32.

In this case, the body control module (BCM) 33 implements a vehicle network to centrally control a plurality of door modules 34 electrically connected, and the engine management system (EMS) 35 is an engine of a vehicle. Control state and behavior. The PCM 55 receives information signals such as a brake pedal, a side brake, a gear position, and a vehicle speed to control the ACC, ignition 1, 2, and start power relay signals. In addition, the electronic steering column lock (ESCL) 32 electrically fixes the steering column, and the immobilizer control 53 controls the start of the vehicle through encryption to prevent theft.

In addition, the key switch module 5 including the key slot and the start button includes a push button start button instead of a conventional rotary start switch. In addition, the electromagnetic induction coil is preferably embedded so that the battery 29 can be charged while the portable terminal 20 is inserted into the key slot.

Therefore, the vehicle passive door / starting device 1 according to the present invention opens and closes the door only by the user touching or pulling the door handle 3, and the user starts only by inserting a key into the key slot or pressing the start button. Can be turned on or off.

Meanwhile, the LF antenna 41 of the fixed terminal 40 is installed inside the vehicle and each door handle 3. In addition, each door is provided with a door lock button 17, which is not shown, and the lock button 17 is electrically connected to the door module 34. Therefore, when the lock button 17 is pressed, the door module 34 is operated to lock the door.

Hereinafter, with reference to the accompanying drawings will be described in detail the control method and its operation of the vehicle door / starting passive device of the present invention.

First, the process of unlocking the door of the vehicle will be described with reference to FIG. 4.

The driver's or passenger's door handle 3 or trunk door handle 3 while the driver carries the portable terminal 20 such as a card key or fob key. Touch or pull surface 110, the sensor 11 is installed on each door handle 3 transmits a detection signal to the power control module 50 (120). Then, the power control module 50 determines whether all the doors of the vehicle are locked through the information collected through each door module 34 (130), and if all the doors are not locked, ignores the detection signal and ends. (140). On the other hand, if all doors are locked, the PMM 50 requests the interrogation signal to the fixed terminal 40 and the fixed terminal 40 emits a low frequency (LF) interrogation signal through the LF antenna 41 (150). ).

Subsequently, it is determined whether the portable terminal 20 is located in the reception area of the question signal LF (160). If it is not in the reception area, the operation is terminated (170), and the portable terminal 20 receives the reception area of the question signal LF. If there is, the mobile terminal 20 transmits the received question signal to the signal processor 27 (180). The signal processor 27 modulates the ID code to the question signal, converts the frequency, and then radiates the response signal RF to the fixed terminal 40 (190). At this time, if the user further presses the operation button of the portable terminal, the command of the operation button is processed first.

When the fixed terminal 40 receives the response signal RF through the antenna 41, the fixed terminal 40 transmits the RF signal to the RF signal processor 48 to demodulate the ID code from the received high frequency, and then transmits the ID code to the PMM 50. The PMM 50 compares the ID code stored in the memory with the received ID code (210), terminates if it does not match (220), and opens the BCM (33). Send a request signal (230). The BCM 33 sends an opening request signal to the door module 34 to open the door 240, and the door module 34 sends a door opening response signal back to the BCM 33 (250). Finally, the BCM 33 flashes the warning lamp twice and the buzzer twice in one second period after receiving the door opening response signals from all the door modules 34 (260).

Next, a process of locking the door of the vehicle will be described with reference to FIG. 5.

When the driver carrying the portable terminal 20 presses the lock button 17 installed on the door handle (270), the door lock signal is transmitted to the door module 34 (280). The door module 34 determines whether all doors of the vehicle are locked (290), and the door module 34 sends a door lock signal to the PMM 50 (300), and receives the door lock signal PMM 50. If all the doors of the vehicle are closed, the door ignores the lock request and ends (310).

On the other hand, if all the doors are not locked, the door module 34 sends a door lock signal to the PMM 50 (320), and the PMM 50 receiving the door lock signal sends a question signal to the fixed terminal 40. Request 330. Then, the fixed terminal 40 operates the LF antenna inside the vehicle and the LF antenna of the door handle to emit a question signal of low frequency (LF) (340). Subsequently, the fixed terminal 40 receives the response signal RF of the portable terminal 20 and transmits the demodulated ID code from the response signal to the PMM 50 to interpret and authenticate the ID code (350). It is determined whether there is only a signal authentication response of the LF antenna on the lock button side (360), otherwise, the process terminates. Then, the PMM 50 sends a lock request control signal to the BCM 33 through CAN communication (370). Each door module 34 receiving the lock request control signal locks the door (380). Then, the door lock response signal is sent back to the BCM (33) (390). The BCM 33 flashes the warning lamp once every one second and receives the lock buzzer once after receiving the lock lock response signals from all the door modules 34 (400).

6, an engine start process according to the present invention will be described.

When the driver carrying the portable terminal 20 presses the start button 16 (410), the start button 16 transmits a button press signal to the PMM 50 to operate the ACC relay (420). The PMM 50 sequentially determines whether the brake pedal is pressed, the side brake is pulled, or the portable terminal is inserted into the key slot according to the information input from the PCM (430). If the brake pedal is not pressed, the side brake is not pulled, and the portable terminal is inserted into the key slot, the PMM 50 performs bidirectional communication with the transponder inside the portable terminal through a coil installed in the key slot. (440). The PMM 50 compares whether the stored ID code is the same as the ID code of the portable terminal. If there is a mismatch, all operations are terminated (450), and if they match, the PMM 50 transmits a steering lock release signal to the ESCL 32.

If the brake pedal is depressed, the side brake is pulled, and the portable terminal is not inserted into the key slot, the PMM 50 requests the interrogation signal to the fixed terminal 40 (470). The fixed terminal 40 wirelessly radiates the question signal through the LF antenna 41 (480). Subsequently, it is determined whether the mobile terminal 20 is located in the question signal LF receiving area (490). If the mobile terminal 20 is not in the receiving area, the terminal terminates as it is (510). If there is, the mobile terminal 20 transmits the question signal received through the antenna to the signal processor (520), and the signal processor modulates and frequency-converts the ID code to the question signal and then transmits the response signal RF to the fixed terminal ( 40) (530).

The fixed terminal 40 sends a response signal (RF) received through the RF antenna to the RF signal processor to demodulate the ID code and transmit the demodulated code to the PMM 50 to interpret the encryption code (540). Then, it is determined whether the ID code of the mobile terminal and the stored ID code match (550), and if it is inconsistent (560), if it is matched, the steering lock release signal is transmitted to the ESCL 32 through CAN communication, and then the IG 1 relay Operation (570). In addition, the EMS 35 transmits an immobilizer authentication request signal to the PMM 50 upon detection of IG 1 (580).

Subsequently, the immobilizer authentication result is determined (590), if there is a mismatch, the operation is terminated (610). If there is a match, the PMM 50 supplies power to the start relay and transmits an authentication response signal to the EMS 35 (620). The EMS 35 then drives the starting motor to start the vehicle (630).

As described above, the vehicle passive door / starting apparatus according to the present invention can open the door by a manual operation of holding a door handle of the vehicle by a user carrying the portable terminal, and simply opens the door by pressing a door lock button. There is an effect to be able to lock, and to be convenient.

In addition, the vehicle passive door / starting device according to the present invention is convenient to use and prevents theft of the vehicle by performing user authentication between the mobile terminal and the fixed terminal by simply pressing a start button and performing functions such as an immobilizer and an ESCL. can do.

Claims (9)

In the vehicle passive door / starting device comprising a fixed terminal installed in the vehicle and a portable terminal carried by the user, the door lock / unlock or start / stop the engine by the two-way wireless communication between the fixed terminal and the portable terminal, When a user's passive behavior is detected by a sensor installed in a door handle or a key switch module of the vehicle, the power control module (PMM) installed in the vehicle responds to the received detection signal. Is transmitted to the mobile terminal, and when the RF response signal transmitted by the mobile terminal is received, the ID code is demodulated from the RF response signal and transmitted to the power control module (PMM), and the power control module (PMM) is received. When the ID code and the registered ID code is matched, the control signal is transmitted to the electrically connected BCM (Body Control Module) and EMS (Engine Management System) to lock / unlock the door or start / stop the engine, characterized in that Passive door / starter for vehicle. A detection sensor installed at the door handle of the vehicle to detect a user touching or pulling the door handle; A power control module (PMM) electrically connected to receive the detection signal of the detection sensor; A fixed terminal connected to communicate with the power control module (PMM); A body control module (BCM) electrically connected to the power control module (PMM); Passive door / start device for a vehicle, characterized in that it comprises a door module electrically connected to the BCM. A detection sensor installed in the key switch module of the vehicle and detecting the user pressing the start button; A power control module (PMM) electrically connected to receive the detection signal of the detection sensor; A fixed terminal electrically connected to communicate with the power control module (PMM); Passive door / starting device for a vehicle, characterized in that it comprises an EMS (Engine Management System) electrically connected to the power control module (PMM). The method according to claim 1, 2 or 3, The detection sensor is a Hall sensor for detecting the frequency generated by the capacitance of the human body, or a passive door / starting device for a vehicle, characterized in that the pressure sensor for detecting the contact pressure of the user. The method according to claim 1, 2 or 3, The portable terminal includes an LF receiving module for receiving an LF question signal transmitted from a fixed terminal; An LF signal processor which generates an ID code in response to the LF question signal and generates an RF response signal by modulating the ID code into the question signal; An RF transmission module for transmitting an RF response signal including the ID code to the fixed terminal; Passive door / starting device for a vehicle, characterized in that it comprises a battery for supplying power to the signal processing means and the transmission and reception module. The method according to claim 1, 2 or 3, The fixed terminal includes: an LF transmission module for transmitting an LF question signal to the portable terminal in response to a question signal request from a power control module (PMM); An RF receiving module for receiving an RF response signal transmitted from the portable terminal; An RF signal processor for demodulating an ID code from the RF response signal of the portable terminal; And a transmission module for receiving a question signal request from the power control module (PMM) and transmitting a demodulated ID code to the power control module (PMM). The method according to claim 1, 2 or 3, The power control module (PMM) includes a detection signal receiving module for receiving a detection signal transmitted from a detection sensor installed in the door handle and the key switch module; A transmission and reception module for requesting a question signal to the fixed terminal in response to the detection signal and receiving an ID code transmitted from the fixed terminal; A central control unit for comparing the ID code transmitted from the fixed terminal with a registered ID code and generating a control signal for operating the door or the engine; A PCM that receives the brake pedal, side brake, gear position, and vehicle speed information signals to control the ACC, ignition 1, 2, and start power relay signals; A BCM to which the door module is electrically connected; A passive door / starter device for a vehicle comprising an ESL electrically connected to the immobilizer. The method of claim 7, wherein Passive door / start device for a vehicle, characterized in that the inside of the power control module (PMM) to install a detachable RF receiver to replace the function of the fixed terminal to control the door / start. The method according to claim 1, 2 or 3, The interface communication method between the PMM and each module is any one method selected from a controller area network (CAN), a K-Line, and a hard wire method.

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