KR101682306B1 - Wearable smart-key system for vehicle - Google Patents
Wearable smart-key system for vehicle Download PDFInfo
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- KR101682306B1 KR101682306B1 KR1020150097463A KR20150097463A KR101682306B1 KR 101682306 B1 KR101682306 B1 KR 101682306B1 KR 1020150097463 A KR1020150097463 A KR 1020150097463A KR 20150097463 A KR20150097463 A KR 20150097463A KR 101682306 B1 KR101682306 B1 KR 101682306B1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/20—Means to switch the anti-theft system on or off
- B60R25/24—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user
- B60R25/245—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user where the antenna reception area plays a role
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/01—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
- B60R25/04—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the propulsion system, e.g. engine or drive motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/023—Services making use of location information using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Transportation (AREA)
- Lock And Its Accessories (AREA)
Abstract
The present invention relates to a wearable smart key system for a vehicle capable of remotely controlling each drive of a vehicle by implementing a communication algorithm having a real time location tracking service (RTLS), and is a wearable type that can be worn by a user, A wearable smart key for transmitting respective control signals so as to control each driving part of the vehicle according to an action of the user, and a wearable smart key for transmitting LF (Low Frequency) radio waves through a plurality of diversity antennas (RTLS) for providing a RSSI (Received Signal Strength Indicator) MAP of the wearable smart key to the wearable smart key and estimating the position of the wearable smart key in real time by giving an RSSI value to each RF DATA returned from the wearable smart key, , A real-time location service), wherein the short- The re-positioning service may convert the RSSI value measured when the short range wireless communication device estimates the position of the wearable smart key into a value when the wearable smart key estimates the position of the wearable smart key to the short range wireless communication device The real-time position of the wearable smart key is estimated by a Regularly Adjusting Coefficient (RACM) using a fingerprinting technique.
Description
The present invention relates to a smart key system for a vehicle, and more particularly, to a smart key system for a vehicle, and more particularly to a smart key system for a vehicle, which is capable of remotely controlling each driver of a vehicle by comparing and comparing RF data of a wearable smart key, Key system.
In order for a car to move, it must first be activated. That is, it is the starter that plays the role of assisting with the external physical force until the car engine can operate by itself.
The vehicle's starting system starts with the world's first gasoline car made in Germany by Karl Benz in 1886. If you turn the large flywheel, which is placed horizontally in the back of the vehicle, clockwise, the metal strips that are connected to the flywheel collide with each other, I got up and started. By 1915, the crank handle was inserted into a small hole beneath the radiator grill and was directly connected to the crankshaft.
This method was very powerful and very dangerous, but since the engine revolutions must exceed 100 revolutions per minute for a sufficient supply of mixer in the carburettor of the engine, a strong man was able to start only when he had to turn the crank handle with his force. Therefore, frequent accidents involving a large injury to the hands or arms occurred during the start-up. Byron Carter, a close friend of Cadillac Sarrand's president, was driving and cranking up the handle, causing his head to be hurt. After the accident, Mr. Leland gave instructions to the company, Delco President of Charles Kettering invented the self-starter, which is an electric automatic starter that starts when the button is pressed. This is a way of connecting the battery's direct current motor to the crankshaft flywheel gear and starting it.
The 1911 Kettering-developed push-button automatic starter was first fitted to the Cadillac Model 30 in 1912, and by 1914 90 percent of US model cars were equipped with a self-starter. This self-starter is a breakthrough invention that increases the car population and meets the revolutionary turning point in the history of automobiles, where seniors and women can easily drive. In 1949, Chrysler of the United States developed a turn-key starter that started by connecting the electrical system of the starter to the car key lock switch. And the same key can be used to select the intermediate stage to connect the battery only without operating the engine and to use the accessories such as the interior lamp or the radio.
In recent years, with the development of wireless communication technology, there has been developed a smart key system of a vehicle having the above-described turn-key starter-type vehicle theft prevention and middle stage selection,
That is, the smart key system senses a signal of a key possessed by a driver aboard the vehicle and causes the driver to operate the engine by pressing the start button. Accordingly, since the smart key possessed by the driver and the button start device of the vehicle communicate with each other wirelessly, the prevention of theft of the vehicle and the convenience of the driver are greatly improved.
The smart key system of such a vehicle opens and closes the door of the vehicle from the outside without pushing a separate key insertion or operation button by the driver, and further detects whether the smart key is indoors. The start can be made only by the operation such as pressing the start button.
The smart key system of the vehicle is a real-time location system (RTLS) application, and is mainly used in the vicinity such as an indoor space or a limited space. Such location tracking systems can be used not only in automobiles but also in a variety of industrial facilities such as parking lots, healthcare centers, production lines and warehouses, as well as security applications such as location-based access control.
The location estimation method in the RTLS system is based on the triangulation method of estimating the position of the object using the triangulation method as in the GPS and the LBS (Location-Based Service), the scene analysis using the image of the object, There is a proximity known as a Presence function.
Among them, triangulation is the most common location estimation method, and triangulation is based on Received Signal Strength Indication (RSSI) or Time of Arrival (ToA).
GPS and RFID (Radio Frequency Identification) technologies have been studied to date. One of the most widely used services is GPS satellite service, and car navigation systems are widely used. However, this is a system developed for the outdoor environment, and it can only be provided where GPS satellite signals can be received. On the other hand, the indoor location tracking technology is limited to the conventional GPS, Cell-ID based outdoor positioning , The application field has been limited to automobiles or low accuracy near information / people search. Therefore, industrial and economic utilization is very high in the future.
In recent years, Beacon has been attracting attention as a short-range wireless communication device for smartphones using Bluetooth low energy (BLE) technology. In December 2013, Beacon was first introduced by Apple as a beacon technology for mobile devices that combines BLE and Beacon. The beacon has long been a kind of optical transmission device, It has been used in automobiles.
This beacon technology provides various information and services using local location recognition and wireless communication technology. Depending on how the signal is transmitted, it is divided into sound-based low-frequency beacons, LED beacons, Wi-Fi beacons, and Bluetooth beacons. In general, BLE technology using Bluetooth 4.0 such as i-beacon is commonly used.
Referring to FIG. 1, an operation function of an automobile electronic key disclosed in Korean Patent Application Publication No. 2005-0026192 (Mar. 15, 2005), which is disclosed in an electronic key of a wristwatch type automobile, When the driver approaches the automobile and turns on the operation handle 202 'and the touch sensor, the antenna of the door handle senses the electronic key 100' to open the door, and when the driver with the electronic key 100 ' And the four indoor antennas 200 'detect the electronic key 100' so as to be able to start.
The system configuration of the automobile electronic key 100 'includes a BCM (Body Control Module) 10', a DDM (Driver Door Module) 12, and an ADM 14 ' Each of the control modules is connected to an IMMO UNIT 16 'and a PIC UNIT 18' by a CAN (Controller Area Network). The IMMO unit 16 'is connected to an ECU 22' to control the starting of the vehicle. The PIC unit 18 'includes a mechanical steering lock (MSL) 23', an operation handle 24 ' 'And the antenna 26' to control the operation of the driving handle, the door driving handle, and various antennas. In the figure, reference numeral 20 'is a receiver for receiving a signal. Typical types of such electronic keys are a smart card type electronic key and an FOB type (pocket type) electronic key.
However, these electronic keys mainly focus on door opening and closing operations in the inside and outside of the vehicle, and they can be carried. However, since there is no transmitting / receiving function of attaching or wearing data to the body of the driver, There is still a problem that can not be ruled out.
Also, the above patent discloses only a general description of a wristwatch-type automobile electronic key, but does not disclose a specific communication algorithm.
In order to solve the above problems, it is an object of the present invention to provide a real-time location tracking service (RTLS) that transmits an RSSI MAP to an LF radio wave in a vehicle and compares RF DATA, which is a reply signal of a wearable smart key, The present invention also provides a wearable smart key system for a vehicle which can remotely control each drive unit of a vehicle by implementing a communication algorithm having a plurality of drivers.
Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments with reference to the accompanying drawings.
In order to achieve the above object, a wearable smart key system of a vehicle according to the present invention is a wearable type that can be worn by a user, and when it is close to a vehicle, A wearable smart key for transmitting respective control signals, and a received signal strength indicator (MAP) MAP for each LF (Low Frequency) propagation through a plurality of diversity antennas, And a local wireless communication device having a Real-Time Location Service (RTLS) for real-time estimation of the location of the wearable smart key by giving an RSSI value to each RF DATA to be returned, The local location tracking service of the communicator may be configured such that, via linear regression, (RACM) using a fingerprinting technique for converting the measured RSSI value into a value obtained by estimating the position of the wearable smart key to the short range wireless communication device, And estimates the real-time position of the wearable smart key by a coefficient.
In addition, the relational expression of the wearable smart key and a short-range wireless communication device, respectively the measured RSSI values, RSSI off - line = α × RSSI on - line = β, and said RSSI off - line is a group wherein the short-range wireless communication with the wearable smart key The RSSI on - line is an RSSI value measured by the wearable smart key with respect to the short-range wireless communication device, and? And? Are entered into a vehicle control target section recognized when the wearable smart key moves Is a coefficient value.
When the wearable smart key recognizes a new iBeacon having the highest RSSI value while moving the vehicle control target segment, the wearable smart key newly obtains the α and β according to the vehicle control target segment, And estimates the real-time position of the wearable smart key by comparing with the entering coefficient values? And?.
In addition, an ECM (Electronic Control Modules) for controlling the wearable smart key, which is mediated from the local area wireless communication device, in the RAM, and controlling the driving parts of the
The short range wireless communication device periodically transmits each RSSI MAP together with a unique ID to transmit the wearable smart key in real time in order to track the accurate position of the wearable smart key through a plurality of diversity antennas, Each of the RF data returned from the smart key is periodically received and an RSSI value is given thereto.
The short-range wireless communication device may further include a plurality of diversity antennas, each of the diversity antennas being connected to the adjacent wearable smart key to avoid collision between the adjacent diversity antennas, and to transmit the Bust sequence sequentially in order to prevent signals from overlapping with time at the same signal carrier frequency. And adopts a time division multiple access (TDMA) scheme.
(X1, y1, z1), ANT2 (x2, y2, z2), ANT3 (x3, y3, z3), and ANT4 (x4, y4, z4) of the diversity antennas of the short- (Xx1, yy1, zz1), ANT2 (xx2, yy2, zz2), ANT3 (xx3, yy2, zz2) respectively corresponding to the RSSI MAPs of the diversity antennas of the short- , yy3, zz3) and ANT4 (xx4, yy4, zz4).
Also, the wearable smart key is switched to a vehicle control mode when it is close to a radio wave area transmitted from a diversity antenna of the short-range wireless communication device, and is switched to a normal mode when it is deviated from the radio wave area.
Further, the wearable smart key is a wristwatch worn on the wrist of the user, and the general mode performs a function inherent to a clock, and the vehicle control mode is a mode in which each of the drivers of the vehicle And a control unit for controlling the control unit.
In addition, the wearable smart key may include a transmit antenna and a receive antenna for transmitting and receiving with the near field wireless communication device, and a control signal for controlling the
In addition, a control signal for opening and closing the seat door of the vehicle is transmitted to the
In addition, the wearable smart key may include a GPS receiving antenna and a smart phone (not shown) so that the vehicle management service can be provided in connection with a private network of a public network or an automobile maintenance company through a vehicle management application. Button is provided.
The wearable smart key system of the vehicle according to the present invention transmits ID and RSSI values to the LF radio waves from each of the diversity antennas of the near field wireless communication device installed in the vehicle, And a real-time locating service (RTLS) for accurately estimating the location of the wearable smart key.
Therefore, it is possible to control each driving part of the vehicle by detecting the accurate position of the target value to be controlled in the room and near by the real time position tracking between the vehicle and the wearable smart key.
1 and 2 are diagrams showing a wearable smart key system of a vehicle according to the prior art,
FIG. 3 is a block diagram showing an embodiment of a wearable smart key system of a vehicle according to the present invention,
FIG. 4 is a perspective view showing a state in which a wearable smart key is worn in the embodiment of FIG. 3,
Figure 5 is a plan view of the embodiment of Figure 4,
Figure 6 is a block diagram of the embodiment of Figure 5,
Fig. 7 is a perspective view showing a state in which the embodiment of Fig. 3 is implemented in a vehicle,
FIG. 8 is a diagram for explaining an algorithm having a real-time location tracking service of the embodiment of FIG. 3,
FIG. 9 is a view for explaining a time division multiple access scheme in which Bust columns between diversity antennas are sequentially transmitted in the embodiment of FIG. 8; FIG.
Hereinafter, preferred embodiments of a wearable smart key system for a vehicle according to the present invention will be described in detail with reference to the accompanying drawings.
3 to 9, the wearable smart key system of the vehicle according to the present invention includes a wearable
First, the wearable
The wearable
5 and 6, the wearable smart key 100 in the form of a wristwatch has a function inherent to a clock in the normal mode and is connected to a short range
Here, the action of the driver is an action of touching a corresponding drive button for vehicle control generated on the screen switched from the wearable smart key 100 to the vehicle control mode, an action of generating a motion control signal through the user's motion, And an act of generating a voice control signal through voice.
The wearable
The control signal for transmitting the
In addition, the wearable
The various control signal transmitting units and the transmitting and receiving antennas and the S / W of the wearable smart key 100 described above are connected to the short range
Therefore, the wearable
3 and 7 to 9, the near
Here, the real-time location service uses radio waves of 2.45 GHz band and meets the 802.11b / g standard, similar to the location-based service (LBS) of the mobile communication network. The methods used for location tracking include Triangulation Method for estimating the position of an object using triangulation method as in GPS and Location-Based Service (LBS), Scene Analysis using Image of Object Method, and Proximity Method, which is known as Adjacent Function. Among them, triangulation is the most common location estimation method and triangulation is based on Received Signal Strength Indication (RSSI) or Time of Arrival (ToA) technique.
In addition, the communication medium uses a wireless LAN (Wi-Fi, IEEE 802.11b / g), that is, a short-range wireless communication network. This short-range wireless communication network has a bandwidth of 13.56 MHz and is a means for wireless communication with a very short distance. It includes LF, XBee, ZigBee, BlueTooth, Beacon and the like. Currently, data communication speed is 424 Kbit per second , Transportation, tickets, payment, and so on. In addition, the LF (Low Frequency) frequency is 30 to 300 kHz and the wavelength is 10 to 1 km, which is also called a km wave or a long wave. There is a feature that it can communicate far by simple device.
In the case of performing indoor / outdoor continuous positioning, the positioning technique includes a Cell-ID method, a ToA method, a Time Difference of Arrival (TDoA) method, and a Time Difference of Arrival (TDoA) method considering a processing method of a signal received from a wireless communication infrastructure, ) Method, Angle of Arrival (AoA) method, fingerprint method, and the like. GPS and RFID (Radio Frequency Identification) technologies have been studied to date. One of the most widely used services is GPS satellite service and car navigation system is widely used.
However, this is a system developed for the outdoor environment, and it can be serviced only where GPS satellite signals can be received. Indoor location tracking technology is limited due to limitations of existing GPS and Cell-ID based outdoor location tracking technology. Considering that the application field has been limited to a vehicle or a low-accuracy near information / person search, the RTLS system can be considered to be highly industrially and economically utilized by expanding the application field.
The RSSI (Received Signal Strength Indicator) MAP of the short range
In addition, according to an embodiment of the present invention, the received signal strength indicator (RSSI) MAP periodically transmits an ID and an RSSI value to track the accurate position of the wearable
In addition, according to an embodiment of the present invention, the near field
When the wearable
Hereinafter, in an embodiment of the present invention, a location is estimated using a Regularly Adjusted Coefficient (RACM) using a fingerprinting technique as a Real-Time Locating Service (RTLS).
8, an RSSI MAP transmitted from the
That is, the RSSI value measured when the wearable
RSSI off - line = α × RSSI on - line = β ------------- (1)
Wherein the RSSI off - line is an RSSI value measured by the short range wireless communication device with respect to the wearable smart key, the RSSI on - line is an RSSI value measured by the wearable smart key with respect to the short range wireless communication device, Is a coefficient value entering a vehicle control target section recognized when the wearable smart key moves.
The information to be known in the linear function of Equation (1) is the coefficient values (?,?), And updates the coefficient values of the vehicle control target compartment when entering the other vehicle control target compartments, So that it is possible to use a linear function suitable for the function.
In other words, if it recognizes the new iBeacon having the highest RSSI values and the wearable smart key 100 moves That is, when entering a new vehicle-controlled compartment asking for α and β, out of the range of the signal or the highest RSSI value When a new iBeacon having recognized again obtain the α and β α and β is obtained for each compartment to be controlled in the vehicle. In this case, when various information on the vehicle control object is grasped, the fingerprinting technique can be used, and the predetermined database can be inquired by using ? And ? For each compartment or environment of the vehicle control object.
Through this communication algorithm, the driver can control the various driving
In addition, the communication algorithm according to the embodiment of the present invention may be applied to a wearable
Accordingly, the implementation of the communication algorithm having the real-time location tracking service according to the embodiment of the present invention can be applied to a gyro sensor, an acceleration sensor for detecting impact and tilt values, a blood pressure / pulse measurement sensor, a motion sensor for detecting movement, Control various driving
An ECM (Electronic Control Modules) 300 is an engine control unit (ECU) that measures the ignition timing value and the fuel injection value, which are the initial settings of the engine revolution speed, the intake air amount, the intake pressure, And corrects the water temperature sensor, oxygen sensor, etc., and adjusts the opening and closing rate of the injector, which is the fuel injecting device. In addition, a limit value is set in advance to prevent overload of each part of the engine, and the CAN is communicated to each of the
3 and 7, the
Referring to FIG. 3, the ROM (Read Only Memory) 310 of the
Referring to FIG. 3, the RAM (Random Access Memory) 320 is a memory IC unit built in the
3 and 7, the
In the embodiment of the present invention, various vehicle control driving commands are issued in cooperation with the wearable
3 and 7, the
Here, the CAN (Controller Area Network) communication according to the embodiment of the present invention can be applied to the automotive industry (Automotive Industry) to overcome the wiring problem of a point-to- ) Is a serial network multi-communication method. The CAN communication feature is that the CAN bus, which is commonly used in embedded systems (or microcontrollers), forms a communication network between microcontrollers (microcomputers) and is connected by a twisted pair wire, ) Scheme, which is suitable for high-speed application systems using short messages. In addition, it has robustness to external factors (noise, etc.) and has a high reliability by minimizing the communication error rate.
Theoretically, 2032 different devices (embedded controllers) can be connected to one network to perform communication, but due to the limitation of CAN transceiver (transmitter), up to 110 nodes (communication subject) can be connected and used . The communication speed is high speed communication of 1Mbps (ISO 11898 standard) which can be controlled in real time and error detection and error correction is applied to the severe noise environment such as automobile environment (various serious electrical noise in car engine room) Function.
The operation principle of CAN communication is multi master network and CSMA / CD + AMP (Carrier Sense Multiple Access / Collision Detection with Arbitration on Message Priority) method is used. First, it is similar to the Ethernet communication method that detects whether the CAN bus line is in use before sending a message to the CAN node, and performs collision detection between messages. In addition, the data message sent from a certain node (system) does not include the address of the sender or the receiver. On the other hand, in the data message item of each node, each node (system) (ID-11bit or 29bit) for each system (system). All nodes connected to the network (CAN Controller system) receive messages on the network, evaluate them through the identifiers of the messages they need, and then take them only if they are messages of identifiers that they need, . When the data of several nodes flowing on the network (CAN communication line) flows into the node which the user needs simultaneously, the number of the identifier is compared to determine the priority of the message to be taken first. In other words, when the number of identifiers is low, the highest priority is given (the
Therefore, in the embodiment of the present invention, the characteristic of the CAN communication allows the user to easily control the wearable smart key 100 at the remote place from the
As described above, when the ID and the RSSI value are transmitted to the LF radio waves from the
Accordingly, it is possible to control the driving
The embodiments of the present invention described above and shown in the drawings should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art will be able to modify the technical idea of the present invention in various forms. Accordingly, such improvements and modifications will fall within the scope of the present invention as long as they are obvious to those skilled in the art.
1: vehicle
100: Wearable smart key
101:
103: Channel # 3 control signal transmission unit 104: Channel # 4 control signal transmission unit
105: receiving antenna 106: transmitting antenna
107: Battery 108: Time adjustment button
109: GPS reception antenna 110: smartphone button
200: near field wireless communication device 210: first diversity antenna
220: second diversity antenna 230: third diversity antenna
300: ECM
310: ROM 320: RAM
400:
500a:
500c: channel # 3
500n: channel #n driver
Claims (12)
The short-
Transmitting each RSSI MAP together with a unique ID periodically to track an accurate position of the wearable smart key in real time through a plurality of diversity antennas, and transmitting each RSSI returned from the wearable smart key DATA is periodically received, RSSI values are respectively given,
In order to avoid collision with each other, each of the diversity antennas is connected to an adjacent wearable smart key, and a time division multiple access (TDMA) scheme is used in which a Bust sequence is sequentially transmitted so that signals do not overlap with time at the same signal carrier frequency. Access) method,
The short-range location tracking service of the short-
Fingerprinting for converting an RSSI value measured when the short range wireless communication device estimates the position of the wearable smart key to a value obtained when estimating the position of the wearable smart key to the short range wireless communication device through linear regression, Estimates the real-time position of the wearable smart key by means of a Regularly Adjusting Coefficient (RACM)
Wherein the RSSI MAP of each of the diversity antennas of the short-
(X2, y2, z2), ANT3 (x3, y3, z3) and ANT4 (x4, y4, z4)
Each of the RF DATAs of the wearable smart key,
ANT1 (xx1, yy1, zz1), ANT2 (xx2, yy2, zz2), ANT3 (xx3, yy3, zz3) and ANT4 (xx4, yy4, zz4) respectively corresponding to the RSSI MAPs of the diversity antennas of the short- )ego,
The wearable smart key includes:
A GPS receiving antenna and a smartphone button are provided so that a vehicle management service can be provided in connection with a public network or a private network of a car maintenance company through a vehicle management application. Wearable smart key system of vehicle.
The relational expression of the RSSI value measured by each of the wearable smart key and the short-
RSSI off - line = alpha x RSSI on - line = beta,
Wherein the RSSI off - line is an RSSI value measured by the short range wireless communication device with respect to the wearable smart key, the RSSI on - line is an RSSI value measured by the wearable smart key with respect to the short range wireless communication device, Wherein the wearable smart key is a coefficient value entering a vehicle control target section recognized when the wearable smart key moves.
The wearable smart key includes:
When a new iBeacon having the highest RSSI value is recognized while moving the vehicle control target segment, the α and β are newly obtained according to the vehicle control target segment, and then the coefficient values α and β entering the predetermined vehicle control target segment And estimating a real-time position of the wearable smart key by comparing the real-time position of the wearable smart key with the wearable smart key.
ECM (Electronic Control Modules) for storing the control signals of the wearable smart key mediated from the near field wireless communication device in the RAM and for controlling the driving devices of the channel # 1 and the channel #n, The wearable smart key system of the vehicle.
The wearable smart key includes:
Wherein the mobile terminal is switched to a vehicle control mode when it is close to a radio wave area transmitted from a diversity antenna of the short range wireless communication device and is switched to a normal mode when it is deviated from the radio wave area.
The wearable smart key includes:
A wristwatch worn on the wrist of the user,
In the normal mode,
Perform clock-specific functions,
The vehicle control mode includes:
And controls each driving unit of the vehicle according to an action of the user.
The wearable smart key includes:
A transmitting antenna and a receiving antenna transmitting and receiving the short range wireless communication device,
A channel # 1 control signal transmitting unit or a channel #n control for transmitting the control signals to the short-range wireless communicator through the transmission antenna so that the ECM controls the channel # 1 driving unit and the channel #n driving unit, And a signal transmission unit.
The channel # 1 control signal transmitter includes:
A control signal for opening and closing the seat door of the vehicle is transmitted,
Wherein the channel # 2 control signal transmitter comprises:
A control signal for opening and closing a trunk door of the vehicle is transmitted,
The channel # 3 control signal transmitter includes:
A control signal for opening the bonnet of the vehicle is transmitted,
The channel # 4 control signal transmitter includes:
Wherein a control signal for turning on and off the vehicle is transmitted.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018128199A1 (en) * | 2017-01-03 | 2018-07-12 | 엘지전자 주식회사 | Watch type terminal |
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