KR20170084853A - Remote control system of the steering wheel in vehicle using wireless communication - Google Patents

Abstract

A steering wheel remote control system for a vehicle using a wireless communication system according to an embodiment of the present invention is connected to a switch implemented on a steering wheel of a vehicle by wire, An RF node for analyzing the packet data received from the Tx_RF module through wireless communication and outputting an operation resistance value for performing the function of the input button, And a function execution unit connected to the RF node by a wire, and performing a function of the vehicle according to the operation resistance value received from the RF node.

Description

[0001] The present invention relates to a remote control system for a steering wheel,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a steering wheel device for a vehicle, and more particularly, to a steering wheel remote control system for a vehicle and a method of operating the same for controlling functions implemented in a steering wheel using a wireless communication method.

The car is the best result of modern science with a lot of components and the highest technology, and it is under constant development and change. In addition, because stability and safety are more important than technology, various devices in the vehicle are stuck with long-established, proven wireline communication.

Typical in-vehicle wireline communication methods, LIN (Local Interconnect Network) and CAN (Controller Area Network), have advantages of fast bus response, fast transmission speed, and error detection and recovery. As the development of science and technology and the system centered on user convenience are increasing, various devices in the vehicle are the most active field to apply them. In the case of LIN or CAN, devices that are directly connected to safety, such as engines and powertrain components such as missions, are used as communication networks based on high reliability.

On the other hand, in the case of a vehicle's wireless steering wheel, it is relatively far from safety and can be classified as a user-friendly device. In recent years, AVN (Audio Video Navigation), cruise control, trip computer control, and the like have been increasingly used for the steering wheel remote control, which has been used as a volume control of audio in the past. The interface to this is analog, and the remote control switch and the target device are wired. At this time, four or more connectors for connecting these devices are used. As described above, the wired connection method increases the unit cost of the vehicle in terms of cost, it is difficult to maintain, and it is possible to repair one faulty part by purchasing all the expensive wires and connector bundles.

Meanwhile, a wireless intra-car network is being studied in various fields using various methods (e.g., Wi-Fi, Bluetooth, ZigBee, CDMA, Wi-Media, UWB, etc.). Here, Bluetooth is a typical wireless communication technology that is actually applied to a vehicle by 1: 1 pairing with vehicle audio. CDMA is almost the only communication medium that is interworked with external network and shows advantages such as high transmission speed and wide coverage, but it is less frequently used because it does not provide burden on communication cost and various interfaces. IEEE802.11p is a 5GHz band communication service using 11a PHY and 11e MAC as a standard for providing wireless LAN service to vehicles moving at high speed. By using the IEEE802.11p communication method, it is expected that the network construction with the outside of the vehicle or inside the vehicle is expected to greatly expand, but the infra construction cost is a disadvantage. ZigBee is a wireless communication standard in the 2.4GHz / 900MHz band that conforms to the 802.15.4 standard and belongs to the WPAN. Such a communication method using ZigBee has advantages such as low cost development cost, low power consumption, low maintenance cost and small size but has a problem of lack of communication reliability and limitation of data transmission speed.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a steering wheel remote control system for a vehicle which controls a convenience function directly related to the safety of a vehicle by applying a wireless communication method among various functions implemented in a steering wheel for a vehicle.

According to an aspect of the present invention, there is provided a steering wheel remote control system for a vehicle using a wireless communication system, the steering wheel remote control system comprising: An RF node for analyzing the packet data received through the wireless communication from the Tx_RF module and outputting an operation resistance value for performing the function of the input button, and a function execution device performing a function of the vehicle according to the operation resistance value received from the node.

The Tx_RF module recognizes the input resistance value of the switch and recognizes the button input of the switch.

The Tx_RF module continuously transmits the packet data generated according to the input resistance value to the function execution device for the set time when the input resistance value of the switch continuously occurs for a predetermined set time.

The Tx_RF module generates packet data for at least one of the plurality of buttons in consideration of a predetermined priority according to an input resistance value of each of the plurality of buttons when the plurality of buttons are input from the switch.

The Tx_RF module generates packet data for at least one of the plurality of buttons in consideration of a predetermined priority according to a relative input order of the buttons when a plurality of buttons are input from the switch.

The Tx_RF module retransmits the packet data if the Ack signal is not received from the RF node within a predetermined time after transmitting the packet data.

The Tx_RF module includes a first Tx_RF module connected to the trip / cruise switch implemented on the steering wheel for the vehicle and connected to the trip / cruise switch by wire to generate packet data according to the input resistance value of the button input to the trip / cruise switch, And a second Tx_RF module connected to a AVN (Audio Video Navigation) switch, which is implemented on a wheel, to generate packet data according to an input resistance value of a button input to the AVN switch.

The convenience function device includes a cluster for performing a function for a button input to the trip / cruise switch, and an AVN for performing a function for a button input to the AVN switch.

Wherein the RF node transmits the operation resistance value to the cluster when the packet data is received from the first Tx_RF module and when the packet data is received from the second Tx_RF module, Lt; / RTI >

According to another aspect of the present invention, there is provided a vehicle steering wheel remote control system using a wireless communication system, the system being implemented on a PCB board of a switch implemented on a vehicle steering wheel, Tx_RF parts for generating packet data according to the value of the Tx_RF parts, and a PCB board wirelessly connected to the Tx_RF parts and performing a function of a button input to the switch, And RF parts for outputting an operation resistance value for performing a function of the button.

The Tx_RF parts continuously outputs the packet data for the set time if the input resistance value of the switch continuously occurs for a predetermined set time.

The Tx_RF parts generates packet data for at least one of the plurality of buttons in consideration of a predetermined priority according to an input resistance value of each of the plurality of buttons when a plurality of buttons are input from the switch.

The Tx_RF parts generates packet data for at least one of the plurality of buttons in consideration of a predetermined priority according to the relative input order of the buttons when a plurality of buttons are input from the switch.

The Tx_RF parts retransmit the packet data if the Ack signal is not received from the RF parts within a predetermined time after transmitting the packet data.

The Tx_RF parts are implemented in a PCB board of a trip / cruise switch implemented on the steering wheel of the vehicle, and include first Tx_RF parts for generating packet data according to the input resistance value of a button input to the trip / cruise switch, And a second Tx_RF parts that are implemented on a PCB board of an AVN (Audio Video Navigation) switch implemented on the steering wheel and generate packet data according to the input resistance value of the button input to the AVN switch.

The RF parts are implemented in a PCB board of a cluster that functions as a button input to the trip / cruise switch, and outputs an operation resistance value generated according to packet data received from the first Tx_RF parts to the cluster The first RF parts, and the buttons input to the AVN switch, and outputs the operation resistance value generated according to the packet data received from the second Tx_RF parts to the AVN And second RF parts.

According to the embodiment of the present invention, a remote control signal can be transmitted in a wireless manner rather than a wired manner through a steering wheel of a vehicle and a wireless communication module installed in a corresponding in-vehicle apparatus. Accordingly, it is possible to minimize disadvantages of a method of transmitting a wire signal through a steering wheel rotation assist device such as a clock spring, and to provide more capability to add more functions by reducing the number of wirings applied to a clock spring.

In addition, according to the embodiment of the present invention, it is possible to save the cost and time of the wiring in the vehicle manufacturing step or the maintenance step, and it is possible to easily confirm and replace the disconnection position by the disconnection. It is possible to minimize the cost wasted due to the characteristic of the wiring harness in the vehicle which can not be replaced only at the disconnection portion.

In addition, based on the present invention, basic data for applying wireless technology to a part where safety and quick response of a vehicle are not required is provided.

1 is a block diagram of a steering wheel remote control system for a vehicle using a wireless communication method according to an embodiment of the present invention;
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a steering wheel remote control system for a vehicle,

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. And is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined by the claims. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. It is noted that " comprises, " or "comprising," as used herein, means the presence or absence of one or more other components, steps, operations, and / Do not exclude the addition.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are given to the same or similar components, and in the following description of the present invention, Detailed explanations of the detailed description will be omitted when the gist of the present invention can be obscured.

1 is a block diagram of a steering wheel remote control system for a vehicle using a wireless communication system according to an embodiment of the present invention.

1, a vehicle steering wheel remote control system 100 using a wireless communication method according to an embodiment of the present invention includes a trip / cruise switch 111, an AVN (Audio Video Navigation) switch (Cluster) 140, an AVN 150, and a BCM (Body Control Module) 160.

Here, the trip / cruise switch 111 and the AVN switch 113 refer to a remote control switch implemented in the steering wheel of the vehicle. In the present invention, for example, the trip / cruise switch 111 can select and input nine functions. For example, you can select input for ENTER, DOWN, UP, CROUP operation related to the trip function and select input for SCC (smart cruise control), CRUISE, RES +, SET-, CANCEL operation Can receive. The functions that can be input from the trip / cruise switch 111 can be changed, added and deleted by the developer and the operator in advance.

In addition, in the present invention, for example, the AVN switch 113 can select and input eight functions. For example, the AVN switch 113 may receive a selection input for CALL ON, CALL OFF, VOUCE, VOL +, VOL-, MODE, SEEK UP SEEK DOWN operations related to the AVN function. The functions that can be received from the AVN switch 113 can be changed, added and deleted by the developer and the operator in advance.

The cluster 140 is a device for generating data for an operation (such as a trip setting function, a display function related to a trip and a cruise operation) for the function selected and input from the trip / cruise switch 111, In the present invention is a device for generating data for normal operation of cruise control of a vehicle.

The AVN 150 is a device for generating data for an operation related to a function (a multimedia volume, a track movement control function, a call function, etc.) AVN system selected and input from the AVN switch 113.

In addition, a steering wheel remote control system 100 for a vehicle using a wireless communication method according to an embodiment of the present invention includes a first Tx_RF module 121 for data communication with a trip / cruise switch 111, an AVN switch 113, The second Tx_RF module 123 that communicates with the first Tx_RF module 121, and the RF node 130 that performs data communication with the first and second Tx_RF modules 121 and 123. At this time, the steering wheel remote control system 100 for a vehicle using the wireless communication system may be a system implemented after the vehicle is developed or shipped.

The trip / cruise switch 111 and the AVN switch 113 are wired to an analog interface (resistance value connection) to the first and second Tx_RF modules 121 and 123, respectively. Also, the first and second Tx_RF modules 121 and 123 and the RF node 130 are bidirectionally communicated by wireless communication. At this time, the wireless communication method is connected using the frequency of the ISM band (Industrial Scientific Medical Band) such as Wi-Fi, Bluetooth, ZigBee, and the like. Also, the cluster 140 and the AVN 150 may be wired to the C-CAN or the analog interface (resistance value connection) by the RF node 130.

On the other hand, the RF node 130 may be plural as shown in FIG. At this time, each of the plurality of RF nodes may be connected to the cluster 140 and the AVN 150, respectively, and they may use different or the same radio channel. For example, an RF node connected to the first Tx_RF module 121 may be connected to the cluster 140, and another RF node connected to the second Tx_RF module 123 may be connected to the AVN 150.

In the embodiment of the present invention, it is assumed that one of the RF nodes 130 is connected to the first and second Tx_RF modules 121 and 123.

In one embodiment, when the button corresponding to each function is pressed (input) in the trip / cruise switch 111, the first Tx_RF module 121 recognizes the resistance value (input resistance value) Converts it into wireless packet data, and wirelessly transmits it to the RF node 130. At this time, the input resistance value for each button of the trip / cruise switch 111 may be pre-set and stored in a separate memory.

The RF node 130 reads the packet data received from the first Tx_RF module 121, analyzes which packet data is associated with which button, and outputs a resistance value (operation resistance value) for performing the function of the corresponding button Cluster 140 so that a signal can be delivered to the BCM 160 in a wired (C-CAN) fashion to perform a trip or a cruise function.

Hereinafter, for the sake of convenience of explanation, a resistance value outputted due to the button input at the switches (trip / cruise switch 111 and AVN switch 113) is referred to as an input resistance value, and output from the RF node 130 A resistance value for performing a function with respect to the button will be referred to as a resistance value.

In another embodiment, when a button corresponding to each function is input in the AVN switch 113, the second Tx_RF module 123 recognizes an input resistance value generated due to the input of the corresponding button and converts it into wireless packet data And then wirelessly transmits to the RF node 130. At this time, the input resistance value of each button of the AVN switch 113 may be pre-set and stored in a separate memory.

The RF node 130 reads the packet data received from the second Tx_RF module 123, interprets which packet the corresponding packet data is for, and transmits an operation resistance value for performing the function of the corresponding button to the AVN 150 So that the AVN function can be performed.

At this time, the vehicle steering wheel remote control system 100 using the wireless communication system can transmit signals in two forms. For example, it is possible to transmit a signal by dividing a function to be performed by pressing a button for a short time (input) and a function to be performed by pressing the button for a predetermined time or more (input). For example, a criterion that distinguishes whether a button is shortly inputted or long-typed can be classified according to whether a button is continuously input over a predetermined set time. If the button is pressed for less than the set time, it is determined that the button is pressed briefly by the driver or the operator. If the button is pressed for more than the set time, it can be determined that the button is pressed for a long time.

The RF node 130 confirms the time at which the same packet data is received continuously from the first Tx_RF module 121 or the second Tx_RF module 123 so that the buttons of the trip / cruise switch 111 or the AVN switch 113 It is possible to judge whether the input is short or long.

When the buttons of the trip / cruise switch 111 or the AVN switch 113 are inputted short or long, the following operation can be performed.

First, a case where the button of the trip / cruise switch 111 or the AVN switch 113 is short-circuited will be described.

When the button of the trip / cruise switch 111 or the AVN switch 113 is shortly inputted, the GPIO (General Purpose Input / Output) of the corresponding Tx_RF module (the first or second Tx_RF module 121, 123) Lt; / RTI > For example, when the button of the trip / cruise switch 111 is input, the GPIO of the first Tx_RF module 121 recognizes the button input. When the button of the AVN switch 113 is input, the second Tx_RF module 123 ) Of the GPIO.

The corresponding Tx_RF module (the first or second Tx_RF module 121, 123) recognizing the button input creates wireless packet data for performing the function of the corresponding button and wirelessly transmits the wireless packet data to the RF node 130.

If two or more buttons are simultaneously input from any one of the trip / cruise switch 111 or the AVN switch 113, the corresponding Tx_RF module (the first or second Tx_RF module 121, 123) And transmits the input signal. This can be done by means of interrupts.

As an example, when a plurality of buttons are input at the same time, priority can be set according to a relative input order. At this time, a plurality of buttons may be input at the same time in a different order in a short time interval that the driver or the button operator can not recognize.

For example, when another button is input in a state where an arbitrary button is already input, any button previously input may be set to have a relatively high priority. In this case, only the packet data for an arbitrary button input first is transmitted to the RF node 130, and the packet data for the other buttons inputted thereafter may not be transmitted to the RF node 130. Accordingly, only the function for any button previously input can be performed.

Alternatively, a newly input button may be set to have a relatively high priority in a state where an arbitrary button is already input. In this case, the input of any input button is released first, and only the packet data for the newly inputted button can be transmitted to the RF node 130. Accordingly, the function for any previously input button is stopped, and the function for the other button that is input subsequently can be performed.

In some cases, packet data for a previously input arbitrary button and packet data for other buttons input at a later time may be sequentially transmitted to the RF node 130 at predetermined time intervals. In this case, a function for an arbitrary button previously input and a function for another button inputted subsequently can be performed at the same time.

As another example, when a plurality of buttons are input at the same time, it can operate according to the priority of each button. At this time, the priority according to the button can be set according to the magnitude of the input resistance value. For example, a button having the largest input resistance value among the input resistance values per button may have the highest priority.

In this case, even if a plurality of buttons are input simultaneously, only the packet data for one button may be transmitted according to the priority order of the predetermined button, or the packet data for the button may be sequentially transmitted according to the priority order. If two or more buttons are input at the same time, the corresponding Tx_RF module (first or second Tx_RF module 121, 123) transmits packet data for the higher priority button to the RF node 130, So that signals can not be simultaneously transmitted.

For example, the corresponding Tx_RF module (first or second Tx_RF module 121, 123) transmits only the packet data for the button having the highest priority to the RF node 130 according to the input resistance value among the buttons simultaneously input, Button inputs with the input resistance value of the next order can be ignored. Alternatively, the corresponding Tx_RF module (the first or second Tx_RF module 121 or 123) transmits packet data for a button having a higher priority according to the input resistance value to the RF node 130, Data can be sequentially transmitted to the RF node 130 according to the priority according to the input resistance value.

After receiving the packet data from the corresponding Tx_RF module (the first or second Tx_RF module 121 or 123), the RF node 130 analyzes the received packet data and thereafter determines a resistance value necessary for performing the function of the corresponding button Value). At this time, the RF node 130 can check the operation resistance value information of each function stored in the separate memory and output the operation resistance value for the corresponding button.

At this time, the RF node 130 may transmit an operation resistance value for performing a function for the corresponding button to the cluster 140 or the AVN 150. For example, when packet data is received from the first Tx_RF module 121, the operation resistance value may be transmitted to the cluster 140, and when the packet data is received from the second Tx_RF module 123, the operation resistance value may be AVN ( 150 < / RTI >

The cluster 140 or the AVN 150 receiving the operation resistance value from the RF node 130 performs a function according to the received operation resistance value. If the operation resistance value output from the RF node 130 is received in the cluster 140, the cluster 140 may output information on the function of the corresponding button to the voice or the screen. At the same time, the cluster 140 may transmit the function operation information corresponding to the operation resistance value or the operation resistance value to the BCM 160 so that the function of the corresponding button may be operated in the BCM 160 as well.

Hereinafter, the case where the button of the trip / cruise switch 111 or the AVN switch 113 is input is explained.

When the buttons of the trip / cruise switch 111 or the AVN switch 113 are input in a long time, it is performed in the same manner as in the case where the button is shortly inputted. However, if the Tx_RF module (first or second Tx_RF Modules 121 and 123) can continuously generate packet data. Accordingly, the RF node 130 continuously outputs the operation resistance value according to the packet data continuously received.

In this case, when a long button is input, a delay (radio interval) of a short time (for example, ms order) can occur such that the user can not recognize the remote control as in the conventional wired remote controller. When the button is input for a long time, the number of times the packet data is continuously generated in the Tx_RF modules 121 and 123 and the number of times of continuously outputting the operation resistance value in the RF node 130 are different depending on the vehicle hardware characteristics, Therefore, it can be appropriately adjusted for each vehicle. Alternatively, the developer or the operator can analyze the result beforehand to make a suitable specification, and configure the variable section so that it can be adjusted easily.

If the command (packet data) transmitted in the radio section (between the first and second Tx_RF modules 121 and 123 and the RF node 130) is not transmitted to the receiving board due to interference or the like, Or the retransmission function may not be used. In the case of retransmission, the RF node (130), which is a receiving board, generates an Ack of the MAC end to support bidirectional communication. For example, the Tx_RF modules 121 and 123 transmit the packet data to the RF node 130, and then retransmit the packet data if the Ack is not received from the RF node 130 within a predetermined reply time. If the Ack is received within the reply time after the packet data is transmitted to the RF node 130, the Tx_RF modules 121 and 123 may stop the operation of retransmitting the packet data. In addition, such a retransmission operation can be repeated a predetermined number of times.

According to the embodiment of the present invention, a remote control signal can be transmitted in a wireless manner rather than a wired manner through a steering wheel of a vehicle and a wireless communication module installed in a corresponding in-vehicle apparatus. Accordingly, it is possible to minimize disadvantages of a method of transmitting a wire signal through a steering wheel rotation assist device such as a clock spring, and to provide more capability to add more functions by reducing the number of wirings applied to a clock spring.

In addition, according to the embodiment of the present invention, it is possible to save the cost and time of the wiring in the vehicle manufacturing step or the maintenance step, and it is possible to easily confirm and replace the disconnection position by the disconnection. It is possible to minimize the cost wasted due to the characteristic of the wiring harness in the vehicle which can not be replaced only at the disconnection portion.

In addition, based on the present invention, basic data for applying wireless technology to a part where safety and quick response of a vehicle are not required is provided.

2 is a block diagram of a steering wheel remote control system for a vehicle using a wireless communication method according to another embodiment of the present invention.

2, a vehicle steering wheel remote control system 200 using a wireless communication method according to another embodiment of the present invention includes a trip / cruise switch 211, an AVN (Audio Video Navigation) switch A cluster 240, an AVN 250, and a BCM (Body Control Module) 260.

Here, the Trip / Cruise switch 211, the AVN (Audio Video Navigation) switch 213, the cluster 240, the AVN 250, and the BCM (Body Control Module) 1, detailed description thereof will be omitted.

In addition, the steering wheel remote control system 200 for a vehicle using the wireless communication method according to another embodiment of the present invention includes a first Tx_RF parts 221 connected to the trip / cruise switch 211, a second Tx_RF parts 221 connected to the trip / The first RF parts 231 and the second Tx_RF parts 223 in data communication with the Tx_RF parts 223 and the first Tx_RF parts 221 and in data communication with the second Tx_RF parts 223 connected to the cluster 240, And further includes RF parts 232. At this time, the vehicle steering wheel remote control system 200 using the wireless communication method may be an embedded system (before market applications) before the vehicle is already shipped.

Each of the first and second Tx_RF parts 221 and 223 may be mounted on the PCB board of the trip / cruise switch 211 and the AVN switch 213. In addition, the first and second RF parts 231 and 233 may be mounted on the PCB 240 of the cluster 240 and the AVN 250, respectively.

The first Tx_RF parts 221 are bi-directionally communicated with the first RF parts 231 by radio communication and the second Tx_RF parts 223 are bi-directionally communicated with the second RF parts 233 by wireless communication. At this time, the wireless communication method is connected using the frequency of the ISM band (Industrial Scientific Medical Band) such as Wi-Fi, Bluetooth, ZigBee, and the like.

If the button is input from the trip / cruise switch 211, the first Tx_RF parts 221 recognizes the input resistance value of the corresponding button, converts the input resistance value into wireless packet data, send. At this time, the input resistance value for each button of the trip / cruise switch 211 may be pre-set and stored in a separate memory.

The first RF parts 231 reads the packet data received from the first Tx_RF parts 221 and interprets the corresponding packet data for the corresponding button so that the function can be performed on the corresponding button in the cluster 240 And outputs the operation resistance value.

On the other hand, when a button is input from the AVN switch 213, the second Tx_RF parts 223 recognizes the input resistance value of the corresponding button, converts the input resistance value into wireless packet data, and wirelessly transmits the wireless packet data to the second RF parts 233 . At this time, the input resistance value of each button of the AVN switch 213 may be preset and stored in a separate memory.

The second RF parts 233 reads the packet data received from the second Tx_RF parts 223 and interprets which button the corresponding packet data is for, so that the AVN function for the corresponding button can be performed in the AVN 250 And outputs the operation resistance value.

At this time, the vehicle steering wheel remote control system 200 using the wireless communication method can transmit signals in two forms. For example, it is possible to distinguish a function performed by inputting a button briefly and a function performed when a button is input over a predetermined period of time, thereby transmitting a signal. In this case, the criterion for distinguishing between a short input and a long input may be classified according to a continuous input of the button over a predetermined set time. If the button is input less than the set time, it is determined that the button is pressed shortly. If the button is inputted more than the set time, it can be determined that the button is inputted long. The first RF parts 231 or the second RF parts 233 confirm the time at which the same input resistance values are successively received from the first Tx_RF parts 221 or the second Tx_RF parts 223, 211 or the button of the AVN switch 213 is inputted shortly or when the button of the AVN switch 213 is inputted long.

When the button of the trip / cruise switch 211 or the AVN switch 213 is inputted shortly or long, the following operation can be performed.

First, the case where the trip / cruise switch 211 or the button of the AVN switch 213 is short-circuited will be described.

When the button of the trip / cruise switch 211 or the AVN switch 213 is shortly entered, the button is recognized from the GPIO (general purpose input / output) of the corresponding Tx_RF parts (first or second Tx_RF parts 221 and 223) do. For example, when the button of the trip / cruise switch 211 is input, when the buttons of the first Tx_RF parts 221 and the AVN switch 213 are input, the button input of the GPIO of the second Tx_RF parts 223 is recognized do.

The corresponding Tx_RF parts (first or second Tx_RF parts 221 and 223) that recognize the button input create wireless packet data for performing the function of the corresponding button and transmit the corresponding RF parts (first or second RF parts 231 , 233). For example, the packet data generated in the first Tx_RF parts 221 is transmitted to the first RF parts 231, and the packet data generated in the second Tx_RF parts 223 is transmitted to the second RF parts 233.

If two or more buttons are simultaneously input from any one of the trip / cruise switch 211 or the AVN switch 213, the corresponding Tx_RF parts (first or second Tx_RF parts 221 and 223) And transmits packet data for the input button. This can be done by means of interrupts.

As an example, when a plurality of buttons are input at the same time, it can operate according to the priority according to the relative input order. At this time, the input of a plurality of buttons at the same time may be different in a short time interval that the driver or the button operator can not recognize.

If another button is input while an arbitrary button is already inputted, it is possible that any button previously input is set to have a relatively high priority. In this case, only the packet data of an arbitrary button input first is transmitted to the corresponding RF parts (first or second RF parts 231 and 233), and packet data for the other buttons inputted thereafter may not be transmitted . Accordingly, only the function for any button previously input can be performed.

Alternatively, another button newly entered may be set to have a relatively high priority when an arbitrary button is already input. In this case, any previously input button input is released, and only the packet data for the newly input other buttons can be transmitted to the corresponding RF parts (first or second RF parts 231 and 233). Accordingly, the function for any button previously input is stopped, and the function for the other button inputted subsequently can be performed.

In the other case, the packet data for the input arbitrary button and the packet data for the other buttons inputted subsequently are sequentially transmitted to the corresponding RF parts (first or second RF parts 231 and 233) Lt; / RTI > In this case, the function for the arbitrary button first inputted and the function for the other button inputted subsequently can be performed simultaneously.

As another example, when a plurality of buttons are input at the same time, it can operate according to the priority of each button. At this time, the priority according to the button can be set according to the magnitude of the input resistance value. For example, the highest priority can be set to the button having the highest input resistance value.

In this case, even if a plurality of buttons are input simultaneously, only the packet data for one button may be transmitted according to the priority order of the predetermined button, or the packet data for the button may be sequentially transmitted according to the priority order.

If two or more buttons are input at the same time, the corresponding Tx_RF parts (first or second Tx_RF parts 221 and 223) transmits packet data for the higher priority buttons to corresponding RF parts (first or second RF parts 231 and 233) so that two signals can not be simultaneously transmitted. For example, the corresponding Tx_RF parts (the first or second Tx_RF parts 221 and 223) are set such that only the packet data for the buttons having the highest priority among the buttons inputted at the same time are transmitted to the corresponding RF parts (first or second RF parts 231 and 233) , And the button input of the subordinate can be ignored.

Alternatively, the corresponding Tx_RF parts (first or second Tx_RF parts 221 and 223) may transmit the packet data for the buttons having the higher priority to the corresponding RF parts (first or second RF parts 231 and 233) The packet data for the other buttons can be transmitted sequentially in order of priority.

The corresponding RF parts (first or second RF parts 231 and 233) receiving the packet data from the corresponding Tx_RF parts (the first or second Tx_RF parts 221 and 123) interpret the received packet data, And outputs the operation resistance value necessary for performing the function of the above. At this time, the corresponding RF parts (the first or second RF parts 231 and 233) can check the operation resistance value information of each function stored in a separate memory and output the operation resistance value for the corresponding button. At this time, each of the RF parts (first and second RF parts 231 and 233) may transmit the operation resistance value to the cluster 240 or the AVN 250 according to the corresponding button. For example, the first RF parts 231, which received the packet data from the first Tx_RF parts 221, may transmit the operation resistance value to the cluster 240 and the second Tx_RF parts 223, The second RF parts 233 receiving the packet data from the AVN 250 can transmit the operation resistance value to the AVN 250. [

The cluster 240 or the AVN 250 receiving the resistance value from the RF parts (first or second RF parts 231 and 233) performs a function for the received operation resistance value. The cluster 240 receiving the operation resistance value output from the first RF parts 231 can output information on the function of the corresponding button to the voice or the screen. At the same time, the cluster 240 can transmit the function information corresponding to the operation resistance value or the operation resistance value to the BCM 260 so that the function of the corresponding button can be operated. Alternatively, the AVN 250 having received the operation resistance value output from the second RF parts 233 may perform an AVN function such as playing, stopping, and outputting multimedia according to the function of the corresponding button.

Hereinafter, the case where the button of the trip / cruise switch 211 or the AVN switch 213 is input is explained.

When the button of the trip / cruise switch 211 or the AVN switch 213 is input for a long time, it is performed in the same manner as when the button is shortly input. However, during the input of the button, the corresponding Tx_RF parts (first or second Tx_RF parts (221, 223)) can continuously generate packet data. Accordingly, the RF parts (the first or second RF parts 231 and 233) continuously output the operation resistance value according to the packet data continuously received.

At this time, if the user presses the long button, a delay (radio range) of a short time (for example, ms order) that can not be perceived by the user may occur like a conventional wired remote controller. When the button is input for a long time, the number of times the packet data is consecutively generated in the corresponding Tx_RF parts (first or second Tx_RF parts 221 and 223) and the number of times the packet data is continuously generated in the corresponding RF parts (first or second RF parts 231 and 233) The number of times of continuously outputting the operation resistance value varies depending on the vehicle hardware characteristics, the wireless environment, and the like, and therefore can be appropriately adjusted for each vehicle. Alternatively, the developer or the operator can analyze the result beforehand to make a suitable specification, and configure the variable section so that it can be adjusted easily.

(Packet data) transmitted in the radio section (between the first Tx_RF parts 221 and the second RF parts 231 and between the second Tx_RF parts 223 and the second RF parts 233) If it is not forwarded to the receiving board, retransmission may occur several times or the retransmission function may not be used. In the case of retransmission, the first and second RF parts 231 and 233, which are the receiving boards, generate an Ack of the MAC layer to support bidirectional communication. For example, the first and second Tx_RF parts 221 and 223 transmit the packet data to the first and second RF parts 231 and 233, and then retransmit the packet data if the Ack is not received within the preset reply time , the packet data may be transmitted to the first and second RF parts 231 and 233, and if the Ack is received within the reply time, the packet data may be retransmitted. In addition, such a retransmission operation can be repeated a predetermined number of times.

According to the embodiment of the present invention, a remote control signal can be transmitted in a wireless manner rather than a wired manner through a steering wheel of a vehicle and a wireless communication module installed in a corresponding in-vehicle apparatus. Accordingly, it is possible to minimize disadvantages of a method of transmitting a wire signal through a steering wheel rotation assist device such as a clock spring, and to provide more capability to add more functions by reducing the number of wirings applied to a clock spring.

In addition, according to the embodiment of the present invention, it is possible to save the cost and time of the wiring in the vehicle manufacturing step or the maintenance step, and it is possible to easily confirm and replace the disconnection position by the disconnection. It is possible to minimize the cost wasted due to the characteristic of the wiring harness in the vehicle which can not be replaced only at the disconnection portion.

In addition, based on the present invention, basic data for applying wireless technology to a part where safety and quick response of a vehicle are not required is provided.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is to be understood that the invention may be embodied in other specific forms. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

111, 211: trip / cruise switch 113, 213: AVN switch
121: first Tx_RF module 123: second Tx_RF module
221: first Tx_RF parts 223: second Tx_RF parts
130: RF node 231: 1st RF parts
233: second RF parts 140, 240: cluster
150, 250: AVN 160, 260: BCM

Claims (16)

A Tx_RF module connected to a switch implemented on a steering wheel of a vehicle, the tx_RF module being connected by a wire and recognizing a button input of the switch and generating packet data;
An RF node for analyzing the packet data received through the wireless communication from the Tx_RF module and outputting an operation resistance value for performing the function of the input button; And
A function execution unit connected to the RF node by wire and performing a function of the vehicle according to the operation resistance value received from the RF node;
The steering wheel remote control system comprising:
The method of claim 1, wherein the Tx_RF module comprises:
Recognizing the input resistance value of the switch and recognizing the button input of the switch
Remote Control System for Vehicle Steering Wheel Using Wireless Communication System.
3. The apparatus of claim 2, wherein the Tx_RF module comprises:
And transmitting the packet data generated according to the input resistance value continuously to the function executing device for the set time if the input resistance value of the switch continuously occurs for a predetermined set time
Remote Control System for Vehicle Steering Wheel Using Wireless Communication System.
3. The apparatus of claim 2, wherein the Tx_RF module comprises:
Generating packet data for at least one of the plurality of buttons in consideration of a predetermined priority according to an input resistance value of each of the plurality of buttons when the plurality of buttons are input from the switch
Remote Control System for Vehicle Steering Wheel Using Wireless Communication System.
3. The apparatus of claim 2, wherein the Tx_RF module comprises:
And generating packet data for at least one of the plurality of buttons in consideration of a predetermined priority according to a relative input order of the buttons when a plurality of buttons are input from the switch
Remote Control System for Vehicle Steering Wheel Using Wireless Communication System.
3. The apparatus of claim 2, wherein the Tx_RF module comprises:
If the Ack signal is not received from the RF node within a predetermined time after transmitting the packet data, retransmitting the packet data
Remote Control System for Vehicle Steering Wheel Using Wireless Communication System.
The method of claim 1, wherein the Tx_RF module
A first Tx_RF module connected to the trip / cruise switch implemented on the steering wheel for the vehicle and connected to the trip / cruise switch by wire to generate packet data according to the input resistance value of the button input to the trip / cruise switch; And
A second Tx_RF module connected to an AVN (Audio Video Navigation) switch implemented on the steering wheel of the vehicle and connected to the AVN switch by wire to generate packet data according to an input resistance value of a button input to the AVN switch;
Wherein the steering wheel remote control system comprises a wireless communication system.
8. The convenience function device according to claim 7,
A cluster for performing a function for a button input to the trip / cruise switch; And
An AVN functioning for a button input to the AVN switch;
Wherein the steering wheel remote control system comprises a wireless communication system.
9. The method of claim 8,
Transmitting the operation resistance value to the cluster when the packet data is received from the first Tx_RF module and transmitting the operation resistance value to the AVN when receiving the packet data from the second Tx_RF module
Remote Control System for Vehicle Steering Wheel Using Wireless Communication System.
A Tx_RF parts which are implemented in a PCB board of a switch implemented in a steering wheel for a vehicle and generate packet data according to an input resistance value of a button input to the switch; And
The Tx_RF parts are wirelessly connected to the Tx_RF parts, and are implemented in a PCB of a function execution device that performs a function of a button input to the switch. An operation resistance value for analyzing the packet data and performing a function of the input button RF parts for output;
The steering wheel remote control system comprising:
11. The method of claim 10, wherein the Tx_RF parts comprises:
And continuously outputting the packet data for the set time if the input resistance value of the switch continuously occurs for a predetermined set time
Remote Control System for Vehicle Steering Wheel Using Wireless Communication System.
11. The method of claim 10, wherein the Tx_RF parts comprises:
Generating packet data for at least one of the plurality of buttons in consideration of a predetermined priority according to an input resistance value of each of the plurality of buttons when the plurality of buttons are input from the switch
Remote Control System for Vehicle Steering Wheel Using Wireless Communication System.
11. The method of claim 10, wherein the Tx_RF parts comprises:
And generating packet data for at least one of the plurality of buttons in consideration of a predetermined priority according to a relative input order of the buttons when a plurality of buttons are input from the switch
Remote Control System for Vehicle Steering Wheel Using Wireless Communication System.
11. The method of claim 10, wherein the Tx_RF parts comprises:
If the Ack signal is not received from the RF parts within a predetermined time after transmitting the packet data, retransmitting the packet data
Remote Control System for Vehicle Steering Wheel Using Wireless Communication System.
11. The method of claim 10, wherein the Tx_RF parts comprises:
A first Tx_RF parts which are implemented on a PCB board of a trip / cruise switch implemented on the steering wheel of the vehicle and generate packet data according to the input resistance value of a button input to the trip / cruise switch; And
A second Tx_RF parts, which is implemented on a PCB board of an AVN (Audio Video Navigation) switch implemented in the steering wheel for a vehicle, and generates packet data according to an input resistance value of a button input to the AVN switch;
The steering wheel remote control system comprising:
16. The method of claim 15,
A first RF parts for outputting the operation resistance value generated according to the packet data received from the first Tx_RF parts to the cluster, the first RF parts being implemented in a PCB board of a cluster performing a function of a button input to the trip / ; And
A second RF part that is implemented in a PCB board of an AVN that performs a function for a button input to the AVN switch and outputs an operation resistance value generated according to packet data received from the second Tx_RF parts to the AVN;
The steering wheel remote control system comprising:

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