KR20120019576A - Apparatus for transfer of data by wireless and portable device supporter using the same - Google Patents

Abstract

PURPOSE: A wireless data transmitting apparatus and a portable device cradle are provided to wirelessly transmit and receive data between a vehicle and a portable device. CONSTITUTION: A first data transceiver(110) generates alternating current and magnetic field as power source is provided from outside. The first data transceiver transceives data between a CAN(Car Area Network) module and a portable device. A second data transceiver(120) is magnetized according to magnetic field which is formed in the first data transceiver. The second data transceiver forms wireless communication path with the first data transceiver. The second data transceiver transceives data between the portable device and the CAN module.

Description

Wireless data transmission device and portable device holder using the same {Apparatus for Transfer of Data by Wireless and Portable Device Supporter Using the Same}

The present invention relates to an apparatus for transmitting data, and more particularly, to a wireless data transmission apparatus capable of wirelessly transmitting data between a vehicle and a portable device, and a portable device holder using the same.

Portable devices such as mobile phones, navigation terminals, digital multimedia broadcasting receiving terminals, etc. are increasing day by day, and users install such portable devices in automobiles to use various services on the go.

When installing a portable device in an automobile, a cigar jack is currently used as a power supply means, which will be described below with reference to FIG. 1.

1 is a view for explaining a mounting method of a general portable device.

Referring to FIG. 1, the portable device 1 is currently attached to and fixed inside the vehicle windshield 3 using the sucker 2. In addition, the portable device 1 and the cigar jack 4 are connected through a cable 5 to supply power to the portable device 1.

As such, at present, since power is supplied to the portable device 1 by wire, it is inconvenient to use and aesthetically unfavorable.

In order to solve the problem of the wired cable, a wireless power supply has been proposed. In the current wireless power supply, an electronic device within a medium distance (2 to 5 m) is powered by using electromagnetic waves or a magnetic field. However, this method has an adverse effect on health because strong electromagnetic waves or magnetic fields spread in a large space. In addition, there is a problem that information such as a credit card, transportation card, etc. possessed by the user is deleted or causes an error.

Meanwhile, various electric devices such as various electronic control units (ECCs), audio systems, and parking cameras are built into the vehicle. In recent years, such electric devices are managed through a CAN (Car Area Network or Controller Area Network). CAN is a system designed to systematically and efficiently control electrical devices inside a car. The introduction of CAN allows multiple electrical devices to be implemented in simple hardware using a single power cable, controlled by software and networks, reducing the complexity of the entire system and providing flexibility through software.

Some of the data from the in-vehicle electrical devices can be very useful to the driver. However, even if the in-vehicle electric devices are managed through CAN, the method of providing them to the driver is very limited, and when the driver wants to know the vehicle-related information, there is a limit in immediately and easily identifying them.

Furthermore, the various portable devices used in the vehicle operate only by themselves, and in order to operate in conjunction with the vehicle, additional devices are required for each operation purpose.

As a result, at present, the functions of the vehicle and the functions of the portable device used in the vehicle are inevitably independent of each other, and a technology for interworking the vehicle and the portable device is required.

The present invention provides a wireless data transmission apparatus capable of wirelessly transmitting and receiving data between a vehicle and a portable device.

Another technical problem of the present invention is to provide a wireless data transmission apparatus and a portable device holder using the same, which generate a magnetic field that operates within a narrow area and wirelessly transmit power to and transmit data to the portable device. There is a technical problem.

Another technical problem of the present invention is to provide a wireless data transmission apparatus capable of fixing a portable device holder in a vehicle even when no power is supplied, and a portable device holder using the same.

Wireless data transmission apparatus according to an embodiment of the present invention for achieving the above-described technical problem is to generate and receive alternating current and magnetic field as the power is supplied from the outside to transmit and receive data between the CAN (Car Area Network) module and the portable device A first data transceiver; And a second data transceiver configured to be magnetized according to a magnetic field formed by the first data transceiver to form a wireless communication path with the first data transceiver to transmit and receive data between the portable device and the CAN module.

On the other hand, the portable device cradle according to an embodiment of the present invention is a first data transceiver for transmitting and receiving data between the CAN (Car Area Network) module and the portable device by generating an AC current and a magnetic field as power is supplied from the outside; A main body mounted with a second data transceiver configured to be magnetized according to a magnetic field formed by the first data transceiver to form a wireless communication path with the first data transceiver and to transmit and receive data between the portable device and the CAN module; A seating portion on which the portable device is placed; And a contact terminal formed at a designated position in the seating portion to make electrical contact between the second data transceiver and the portable device.

According to the present invention, it is possible to wirelessly transmit and receive data between the vehicle and the portable device to provide a variety of services in conjunction with the vehicle and the portable device. In addition, by wirelessly supplying power to the portable device, the environment in the vehicle can be maintained in an orderly state.

In addition, by narrowing the generation range of the magnetic field for powering the portable device, adverse effects on the user's health or other magnetic materials are minimized.

In addition, when a coil for generating a magnetic field is implemented as a permanent magnet, a portable device holder may be attached to a dashboard even when power is not supplied, thereby making it convenient to use.

1 is a view for explaining a mounting method of a general portable device,
2 is a block diagram of a wireless data transmission apparatus according to an embodiment of the present invention;
3 is a detailed configuration diagram of a first data transmission / reception unit shown in FIG. 2;
4 is a detailed configuration diagram of a second data transceiver shown in FIG. 2;
5 is a view for explaining an example of a portable device holder according to the present invention,
6 is a view for explaining a CAN system applied to the present invention.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention in more detail.

2 is a block diagram of a wireless data transmission apparatus according to an embodiment of the present invention.

As shown, the wireless data transmission apparatus 10 according to the present invention is the first data transceiver 110 for transmitting and receiving data between the CAN module and the portable device by generating an AC current and a magnetic field as power is supplied from the outside and And a second data transceiver 120 that is magnetized according to a magnetic field formed by the first data transceiver 110 to form a wireless communication path with the first data transceiver 110 to transmit and receive data between the portable device and the CAN module. do.

In addition, the second data transceiver 120 converts an induced current generated according to an alternating current formed in the first data transceiver 110 into a DC current, and the first data transceiver 110 by the magnetization phenomenon. It can be kept in contact with.

To this end, the first data transmission and reception unit 110 is a first communication module for transmitting and receiving data between the AC / magnetic field generating unit 112 and the CAN module and the portable device when generating an AC current and magnetic field as power is supplied from the outside ( 114).

In addition, the second data transceiver 110 converts an induced current generated according to an alternating current formed in the alternating current / magnetic field generating unit 112 into a direct current, and magnetizes it according to the magnetic field formed in the alternating current / magnetic field generating unit 112. And an induced current / magnetic field generator 122 wirelessly connected to the AC / magnetic field generator 112 and a second communication module 124 for transmitting and receiving data between the portable device and the CAN module.

Accordingly, the wireless data transmission apparatus 10 according to the present invention converts the alternating current generated by the alternating current / magnetic field generator 112 into a direct current in the induced current / magnetic field generator 122 to supply to the portable device. In addition, a magnetic field having a polarity opposite to the magnetic field generated by the AC / magnetic field generator 112 is generated by the induced current / magnetic field generator 122 to generate the AC / magnetic field generator 112 and the induced current / magnetic field generator ( 124 is brought into contact by the interacting attraction.

Therefore, the first data transceiver 110 is installed in the dashboard, while the second data transceiver 120 is installed in the cradle of the portable device, and then the dashboard at the location where the first data transceiver 110 is installed. When placed on and supplied with power to the first data transceiver 110, the portable device holder is not only fixed to the dashboard but also powered by the portable device holder.

In addition, a power supply terminal is provided in the portable device, and a power supply terminal is provided in the portable device holder so as to be in contact with the portable device, and when the portable device is seated in the holder, the induced current / magnetic field of the second data transceiver 120 is generated. Power can be supplied from the unit 122 to the portable device.

In addition, the data transmitted from the CAN module is modulated through the first communication module 114 and then loaded on a carrier frequency of a high frequency (10 to 100 MHz) to the induced current / magnetic field generator through the AC / magnetic field generator 112. 122, demodulated in the second communication module 124 and then provided to the portable device. Similarly, the data transmitted from the portable device is modulated by the second communication module 124 and then carried on the carrier frequency of high frequency (10-100 MHz) through the induction current / magnetic field generator 122 and the alternating current / magnetic field generator ( 112, demodulated in the first communication module 114 and then provided to the CAN module.

Therefore, when the user inputs a vehicle-side data request command through the user interface of the portable device, the second communication module 124, the induced current / magnetic field generator 122, the AC / magnetic field generator 112, and the first The communication path is formed via the communication module 114 and the CAN module. The CAN module processes the data requested by the user and transmits the data requested by the user to the portable device through the reverse path.

In addition, even when a user wants to transmit data of the portable device to a vehicle, the user interface of the portable device may be manipulated, the second communication module 124, the induced current / magnetic field generator 122, the AC / magnetic field generator 112, The desired data may be transmitted to the vehicle via the first communication module 114 and the CAN module.

For example, the user may request data such as a driving speed of the vehicle, an engine speed, an indoor temperature, a residual flow rate, and the like through the portable device. The request command is transmitted to the CAN module via the second communication module 124, the induced current / magnetic field generator 122, the AC / magnetic field generator 112 and the first communication module 114, the CAN module Recognizes a request command and sends data in response to it.

When a user wants to output an output signal of a portable device, that is, an audio signal or a video signal through an in-vehicle device, the portable device can designate an output device as an in-vehicle device, so that the audio or video signal of the portable device is It can be output through a speaker or display mounted inside.

FIG. 3 is an exemplary diagram of the first data transceiver illustrated in FIG. 2, and FIG. 4 is an exemplary diagram of the second data transceiver illustrated in FIG. 2.

First, referring to FIG. 3, the AC / magnetic field generator 112 of the first data transceiver 110 is connected to a power supply terminal to convert a DC current supplied from the outside into an AC. And a variable magnetic field connected to the power storage element 1123 for passing the AC current output from the DC-AC converter 1121 and the AC current passed through the power storage element 1123 by being connected between the power storage element 1123 and the ground terminal. And a primary coil 1125 connected to the power supply terminal and electromagnetized by a DC current supplied from the outside. In addition, the electronic device may further include a resistor 1127 connected between the external power source and the primary coil 1125, and the power storage element 1123 between the DC-AC converter 1121 and the primary coil 1125 may be omitted. It's okay.

In the present embodiment, the DC-AC converter 1121 may be implemented, for example, in the form of an oscillator. In this case, 50 Hz to 1 Mz may be used as the oscillation frequency. The AC current generated by the DC-AC converter 1121 drives the primary coil 1125 through the power storage element 1123, where the power storage element 1123 is connected to the circuit portion and the direct current driven by the AC current. It serves to shield the circuit portion that is driven by.

On the other hand, the data output from the CAN module is modulated by the first communication module 114 and then output via the primary coil 1125 acting as an antenna on a high frequency carrier frequency of 10 ~ 100MHz. Similarly, the data output from the second data transceiver 120 is received by the primary coil 1125 and then demodulated by the first communication module 114 and transmitted to the CAN module.

Next, referring to FIG. 4, the induction current / magnetic field generator 122 of the second data transceiver 120 is connected to a ground terminal to generate an induction current by an alternating current flowing through the primary coil 1125. AC-DC converter that converts and outputs the magnetic material as the secondary coil 1221 and the induced current generated in the secondary coil 1221 to the alternating current and the magnetized to the opposite polarity of the magnetic material of the electromagnetized primary coil 1125 (1223).

More specifically, the magnetic body functioning as the secondary coil 1221 is electromagnetized to the opposite polarity of the magnetic body of the primary coil 1125, so that a strong attraction force acts between the primary coil 1125 and the secondary coil 1221. The primary coil 1125 and the secondary coil 1221 are in contact with each other with a dashboard made of a plastic material interposed therebetween.

Furthermore, the data output through the primary coil 1125 is transmitted to the second communication module 124 through the secondary coil 1221 serving as an antenna, modulated, and then provided to the portable device. The data output from the portable device is modulated by the second communication module 124 and then provided to the primary coil 1125 of the first data transceiver 110 through the secondary coil 1221.

In addition, the AC-DC converter 1223 may be configured as one of a rectifier circuit, a bridge circuit, a rectifier capacitor, and a constant voltage circuit. The output of the AC-DC converter 1223 can be controlled from about 500 mA to 1 A, and such an output can operate various portable devices. Since the vehicle generally uses a power of 13.6 V, for example, when a voltage of 10 V is supplied to the AC / magnetic field generator 112, output power of 5 to 10 W may be supplied to the portable device.

As described above, the present invention allows the primary coil 1125 and the secondary coil 1221 to operate as an antenna so that data transmission and reception can be performed between the first communication module 114 and the second communication module 124. In other words, data can be transmitted and received between the CAN module which is an in-vehicle electric system control system and a portable device. At this time, the analog data output from the portable device is converted into digital data through the AC-DC converter 1223 and then transmitted to the second communication module 124, the digital data output from the portable device is directly transmitted to the second communication module ( 124).

In addition, not only the portable device holder can be fixed on the dashboard by the attraction of the primary and secondary coils 126 and 144 by electromagnetization, but also induced by the secondary coil by an alternating current flowing in the primary coil. By converting the current into direct current, the portable device can be powered wirelessly.

On the other hand, the primary coil 126 and the secondary coil 142 may use a ferromagnetic material or a permanent magnet as a magnetic material. In addition, when the permanent magnet is used as the magnetic material, even when the power is not supplied, the primary coil 126 and the secondary coil 142 may be kept in contact with each other and thus may be easily used.

5 is a view for explaining an example of a portable device holder according to the present invention.

As shown, the second data transceiver 120 may be mounted in the holder 30 of the portable device.

The cradle 30 is formed at a designated position in the main body 32 in which the second data transmission / reception unit 120 is mounted, the seating portion 34 in which the portable device is placed, and the seating portion 34 to transmit and receive the second data. And a contact terminal 36 for making electrical contact between the unit 120 and the portable device. Through the contact terminal 36, the data of the portable device is transmitted to the first data transceiver 110 or the data of the first data transceiver 110 is transmitted to the portable device as well as wirelessly supplying power to the portable device. It is also possible.

The cradle 30 may be installed on the dashboard 20, and after installing the first data transmission / reception unit 110 in the dashboard 20 at a corresponding position, the cradle 30 may be supplied with power. In the fixed state on the dashboard (20), it is possible to wirelessly transmit and receive data and to supply power wirelessly.

In addition, as described above, when the magnetic materials of the primary and secondary coils 126 and 142 are implemented as permanent magnets, the cradle 30 is mounted on the dashboard 20 by the attraction force acting between the two coils even when the power supply is stopped. ) Can be fixed.

6 is a view for explaining a CAN system applied to the present invention.

Referring to FIG. 6, a CAN system includes various electrical devices 50 in a vehicle and a CAN module 40 connected thereto.

The CAN module 40 includes a controller 410 for controlling the overall operation, a memory 420 in which applications, control information, data, etc. required for the CAN module 40 to operate, and an electric device 50 are stored in the CAN module ( And a driver 430 connected to 40 to transmit and receive data.

The CAN module 40 can systematically and efficiently integrate and manage various electric devices in a vehicle, and uses a designated protocol for this purpose. The introduction of the CAN system enables the smooth exchange of information between on-board electronic control devices such as engine management systems, transmission control, instrumentation and body electronics.

In addition, when transmitting and receiving data wirelessly with a portable device through a CAN system as in the present invention, as well as transmitting useful information in the vehicle to the portable device, there is an advantage that can be used in conjunction with the portable device and the in-vehicle device have.

As such, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not as restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

100: wireless data transmission device
110: first data transceiver
112: AC / magnetic field generator
114: first communication module
120: second data transceiver
122: induction current / magnetic field generator
124: second communication module

Claims (18)

A first data transceiver configured to generate an AC current and a magnetic field as power is supplied from the outside to transmit and receive data between a CAN (Car Area Network) module and a portable device; And
A second data transceiver configured to be magnetized according to a magnetic field formed by the first data transceiver to form a wireless communication path with the first data transceiver to transmit and receive data between the portable device and the CAN module;
Wireless data transmission device comprising a. The method of claim 1,
The first data transceiver includes an AC / magnetic field generator which converts the DC current into an AC current while being electromagnetized by the DC current as a DC current is supplied from the outside; And
A first communication module connected between the CAN module and the AC / magnetic field generator to form a communication path between the CAN module and the second data transceiver through the AC / magnetic field generator;
Wireless data transmission device comprising a. The method of claim 2,
The AC / magnetic field generator may include: a DC-AC converter connected to a power supply terminal to convert a DC current supplied from the outside into an AC; And
It is connected between the output terminal of the DC-AC converter and the ground terminal and is driven by an alternating current passing through the DC-AC converter to generate a variable magnetic field, while connected between the power supply terminal and the ground terminal and supplied from the outside. A primary coil electromagnetized by a direct current;
Wireless data transmission device comprising a. The method of claim 3, wherein
The AC / magnetic field generating unit further includes a power storage element connected between the DC-AC converter and the primary coil to pass an AC current output from the DC-AC converter. The method according to claim 3 or 4,
The AC / magnetic field generating unit further includes a resistance element connected between the power supply terminal and the primary coil. The method according to claim 3 or 4,
The DC-AC converter is an oscillator. The method of claim 3, wherein
And a ferromagnetic material or a permanent magnet as a magnetic material of the primary coil. The method of claim 2,
The second data transceiver converts an induced current generated according to an alternating current formed in the alternating current / magnetic field generation unit into a direct current, while the polarity of the alternating current / magnetic field generation unit is reversed as the alternating current / magnetic field generating unit is electromagnetized. Induction current / magnetic field generating unit is electromagnetized into; And
A second communication module connected between the inductive current / magnetic field generator and the portable device to form a communication path between the portable device and the first data transceiver through the inductive current / magnetic field generator;
Wireless data transmission device comprising a. The method of claim 2,
The induction current / magnetic field generating unit may include a secondary coil which generates an induction current by the alternating current generated by the alternating current / magnetic field generating unit and is electromagnetized with the opposite polarity as the alternating current / magnetic field generating unit is electromagnetized; And
An AC-DC converter for converting an induction current generated in the secondary coil into an AC current and outputting the same, and converting analog data output from the portable device into digital;
Wireless data transmission device comprising a. The method of claim 9,
The AC-DC converter is any one of a bridge circuit, a rectifying capacitor, a constant voltage circuit. The method of claim 9,
And a ferromagnetic material or a permanent magnet as a magnetic material of the secondary coil. A first data transceiver configured to generate an AC current and a magnetic field as power is supplied from the outside to transmit and receive data between a CAN (Car Area Network) module and a portable device;
A main body mounted with a second data transceiver configured to be magnetized according to a magnetic field formed by the first data transceiver to form a wireless communication path with the first data transceiver and to transmit and receive data between the portable device and the CAN module;
A seating portion on which the portable device is placed; And
A contact terminal formed at a designated position in the seating portion to make electrical contact between the second data transceiver and the portable device;
Portable device cradle comprising a. The method of claim 12,
The first data transceiver includes an AC / magnetic field generator which converts the DC current into an AC current while being electromagnetized by the DC current as a DC current is supplied from the outside; And
A first communication module connected between the CAN module and the AC / magnetic field generator to form a communication path between the CAN module and the second data transceiver through the AC / magnetic field generator;
Portable device holder including a. The method of claim 13,
The AC / magnetic field generator may include: a DC-AC converter connected to a power supply terminal to convert a DC current supplied from the outside into an AC; And
It is connected between the output terminal of the DC-AC converter and the ground terminal and is driven by an alternating current passing through the DC-AC converter to generate a variable magnetic field, while connected between the power supply terminal and the ground terminal and supplied from the outside. A primary coil electromagnetized by a direct current;
Portable device holder including a. The method of claim 14,
The primary coil is a portable device holder is a permanent magnet. The method of claim 13,
The second data transceiver converts an induced current generated according to an alternating current formed in the alternating current / magnetic field generation unit into a direct current, while the polarity of the alternating current / magnetic field generation unit is reversed as the alternating current / magnetic field generating unit is electromagnetized. Induction current / magnetic field generating unit is electromagnetized into; And
A second communication module connected between the portable device and the induced current / magnetic field generator to form a communication path between the portable device and the first data transceiver through the induced current / magnetic field generator;
Portable device holder including a. 17. The method of claim 16,
The induction current / magnetic field generator generates an induction current by the alternating current generated by the alternating current / magnetic field generator, and electromagnetizes the polarity opposite to the alternating current / magnetic field generator as the alternating current / magnetic field generator is electromagnetized. Secondary coils; And
An AC-DC converter converting the induced current generated in the secondary coil into an AC current and outputting the same, and converting analog data output from the portable device into digital;
Portable device cradle comprising a. The method of claim 17,
The secondary coil is a portable device holder is a permanent magnet.

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