KR20120060625A - Smart key unit for a vehicle - Google Patents

Smart key unit for a vehicle Download PDF

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Publication number
KR20120060625A
KR20120060625A KR1020100122227A KR20100122227A KR20120060625A KR 20120060625 A KR20120060625 A KR 20120060625A KR 1020100122227 A KR1020100122227 A KR 1020100122227A KR 20100122227 A KR20100122227 A KR 20100122227A KR 20120060625 A KR20120060625 A KR 20120060625A
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KR
South Korea
Prior art keywords
unit
point
current position
return
sensing
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KR1020100122227A
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Korean (ko)
Inventor
구자용
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대성전기공업 주식회사
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Priority to KR1020100122227A priority Critical patent/KR20120060625A/en
Publication of KR20120060625A publication Critical patent/KR20120060625A/en

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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
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00896—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys specially adapted for particular uses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Navigation (AREA)

Abstract

PURPOSE: A smart key unit is provided to practice a position saving and return trace operation mode from a start point to a finish point by using an accelerator sensor, a geomagnetic sensor, and a gyro sensor. CONSTITUTION: A smart key unit(10) comprises a sensor unit, an input button unit(300), a storage unit, a calculation unit, a controlling unit, and a display unit. The sensor unit senses an acceleration and geomagnetism according to a movement of a housing(100) of a smart key unit. The input button unit is manipulated by a user and sets a start point and finish point. The storage unit saves data sensed by the sensor unit. The calculation unit computes movement data of the housing based on the data sensed by the sensor unit. The controlling unit is electrically connected to the sensor unit, the input button unit, a storage unit, and the calculation unit and transmits controlling signals to the storage unit and calculation unit. The display unit indicates a return orientation in a return trace process for returning to a start point from a finish point.

Description

Smart Key Unit for Vehicles {SMART KEY UNIT FOR A VEHICLE}

The present invention relates to a smart key, and more particularly, to a smart key unit for a vehicle that enables the provision of information in the return process by storing the location information.

Recently, the smart key of the vehicle prevents theft of the vehicle through driver recognition and at the same time enables various functional implementations such as realizing a welcome function in close proximity to the driver.

When the absolute coordinates can be utilized by using the GPS information, it is easy to identify the target target and the current position, so that the movement information to the target target positioned at the desired position can be easily obtained. However, if it is difficult to secure absolute coordinates through the GPS or the like at the current location, such as in an underground parking lot or a ground building, location recognition is difficult. To this end, location recognition may be achieved using a triangulation method of an access point (AP), but location recognition is difficult in an underground parking lot where an AP is not installed.

The present invention, in addition to the vehicle anti-theft and start-up function, such as the user authentication function of the smart key for the vehicle, the sensor unit having a simple structure without using GPS or AP in the process of returning from the destination to the vehicle position after walking to the destination after getting off the vehicle An object of the present invention is to provide a smart key unit for a vehicle capable of implementing a smooth return trace mode and a control method thereof.

The present invention for achieving the above object, the sensor unit is disposed in the housing of the smart key unit for the vehicle and detects the acceleration and geomagnetism according to the movement of the housing, and disposed in the housing and operated by the user and the starting point and end An input button unit for setting a point, a storage unit for storing the sensed data sensed by the sensor unit, an arithmetic unit for calculating movement data of the housing based on the sensed data sensed by the sensor unit, and A control unit electrically connected to a sensor unit, the input button unit, the storage unit, and the operation unit to apply a control signal to the storage unit and the operation unit, and the end point according to a control signal from the control unit. Indicating the return orientation in the return trace process from Provides a vehicular smart key unit for a display.

In the smart key unit for a vehicle, the sensor unit may include: an acceleration sensor for detecting an acceleration of a moving state, an earth magnetic field sensor for detecting an azimuth of the housing, and a gyro sensor for detecting an angular acceleration of the housing.

In the vehicular smart key unit, the acceleration sensor comprises: a plane acceleration sensor for detecting an acceleration of a movement state on a reference plane of the housing parallel to an indicator, and a movement state in a direction perpendicular to the reference plane of the housing; It may also include a gravity acceleration sensor for sensing the acceleration.

In the vehicular smart key unit, the display section includes: a direction display section for displaying a planar orientation on a plane parallel to the index of the return orientation, and a height display section for displaying an orientation on a direction perpendicular to the index of the return orientation It may be provided.

The vehicle smart key unit may further include an image input unit capable of acquiring image information of the end point, and an image display unit capable of displaying image information of the end point when starting the return trace process.

According to another aspect of the invention, the sensor unit for sensing the acceleration and geomagnetic, the input button unit which is manipulated by the user to set the start point and the end point, the storage for storing the sensed data detected by the sensor unit And a control unit for calculating movement data of the housing, a control unit for applying a control signal to the storage unit and the operation unit, and returning from the end point to the start point according to a control signal from the control unit. Providing a smart key unit for a vehicle having a display unit for displaying an orientation; and storing a position for detecting and storing a position from the start point to the end point according to an input signal and an end signal input from the input button unit; And according to the mode signal inputted from the input button unit. It provides a vehicular smart key unit, the control method comprising the step of displaying the return trace back the orientation to the starting point from the exit point.

In the method for controlling a vehicle smart key unit, the location storing step includes: a location point sensing storage step of sensing and calculating an orientation sensing signal including an acceleration and a geomagnetic field to store a location point, and a signal through the input button unit An input sensing step of detecting whether or not the input signal and the detected input signal may include a location point end determination step indicating the end point of the location point.

In the method for controlling the vehicle smart key unit, the storing of the location point detection may include: a sensing step of sensing an orientation sensing signal including acceleration and a geomagnetism by the sensor unit, and a current based on the orientation sensing signal detected in the sensing step. A calculation step of calculating a position, a storing step of storing the calculated current position, a scan period comparison step of comparing a position scan period stored in the storage unit with preset position point repetition counters, and the scan period comparison step A location point storage step of storing a current position as a location point in the storage unit when the location point repetition counter is equal to the location scan period, and initializing the location point repetition counter after the location point storage step An initialization step and the scan period ratio When the point where the iteration counter is less than the position the scan period in the step may include a location point iteration counter incrementing step of incrementing the point where the iteration counter and returns to the detection step.

In the method for controlling a smart key unit for a vehicle, when the signal input through the input button unit is not a location end signal in the location point end determination step, the location point detection storage step may be repeated.

In the vehicle smart key unit control method, the return trace step may include: a return trace input signal detection step of detecting a return trace input signal input through the input button unit, and the return trace input signal is preset in the storage unit; And a return trace mode comparison setting step S22 of comparing and setting the return trace mode including the stored return trace 1 mode and the return trace 2 mode.

In the vehicle smart key unit control method, when the return trace mode is the return trace 1 mode, after the return trace mode is set in the return trace mode comparison setting step, the current location point indicating the current position and the user must follow the movement. A point comparison display step of displaying a target position point indicating a target position to be performed on the display unit, a proximity point checking step of showing a proximity of the current position point to the target position point, and the current position point being the start point; It may be provided with a return check step of confirming whether or not a match.

In the method for controlling a vehicle smart key unit, the point comparison display step may include: a current position sensing step of sensing an orientation sensing signal including an acceleration at a current position and a geomagnetic field, and the current position sensing step; A current position calculation step of calculating a current position based on an orientation detection signal, a current position comparison step of comparing the current position with a current target position, and a result of the comparison in the current position comparison step to determine whether the movement is necessary; The display may also display a current position movement determination display step of indicating whether the movement is necessary.

In the method for controlling a vehicle smart key unit, the determining of the proximity point may include: determining a proximity target position by comparing a difference between the current position, the current target position, and the next target position; And determining whether the next target position is the same as the next target position when the current position is determined to be closer to the next target position than the current target position in the proximity target position determining step. You may.

In the smart key unit control method for a vehicle, the step of confirming whether to return comprises: a return current position detection calculation step of sensing and detecting an orientation detection signal including an acceleration at the current position and a geomagnetic field, the current position and the A position return determining step of comparing a distance difference between a start position and a preset distance error Pst preset and stored in the storage unit; and an occupation time nst and a preset occupation setting time nsto at the current position. A position return occupancy time determining step may be included.

In the vehicle smart key unit control method, when the return trace mode is the return trace 2 mode, after the return trace mode is set in the return trace mode comparison setting step, the current location point indicating the current position and the user must follow the movement. A point comparison display step of displaying a start point indicating the start position to be performed on the display unit, and a return check step of confirming whether or not the current location point coincides with the start point.

In the method for controlling a vehicle smart key unit, the point comparison display step may include: a current position sensing step of sensing an orientation sensing signal including an acceleration at a current position and a geomagnetic field, and the current position sensing step; A current position calculation step of calculating a current position based on an orientation detection signal, a current position comparison step of comparing the current position with the start position, and a result of the comparison in the current position comparison step to determine whether the movement is necessary; The display may also display a current position movement determination display step of indicating whether the movement is necessary.

In the smart key unit control method for a vehicle, the step of confirming whether to return comprises: a return current position detection calculation step of sensing and detecting an orientation detection signal including an acceleration at the current position and a geomagnetic field, the current position and the A position return determining step of comparing a distance difference between a start position and a preset distance error Pst preset and stored in the storage unit; and an occupation time nst and a preset occupation setting time nsto at the current position. A position return occupancy time determining step may be included.

The smart key unit for a vehicle and the control method thereof according to the present invention having the configuration as described above have the following effects.

First, the vehicle smart key unit and the control method thereof according to the present invention utilizes an acceleration sensor, a geomagnetic sensor, and a gyro sensor to store a position from a start point to an end point even under a condition where an absolute position coordinate system through GPS cannot be utilized. And a return trace operation mode to enable a return function within a basement or above ground building, such as an underground parking lot.

Secondly, the smart key unit for a vehicle and the control method thereof according to the present invention may achieve a smooth return through the return orientation information in the return trace process through the display unit including the direction display unit and the elevation display unit.

Third, the vehicle smart key unit and its control method according to the present invention enable the user to recognize the current operating state quickly and smoothly by enabling the auditory and / or tactile recognition through the sound output unit, the vibration output unit and the like. You may.

Fourth, the vehicle smart key unit and the control method thereof according to the present invention can utilize the image information of the end point through the image input unit and the image display unit can achieve a more accurate return trace process.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

1 is a schematic perspective view of a smart key unit for a vehicle according to an embodiment of the present invention.
2 is a schematic configuration diagram of a smart key unit for a vehicle according to an embodiment of the present invention.
3 is a schematic diagram illustrating positional movement on an XYZ coordinate system.
4 is a diagram showing the relative positional movement and the rotational motion on the XY plane in the XYZ coordinate system.
5 is a schematic flowchart of a method for controlling a smart key unit for a vehicle according to an embodiment of the present invention.
6 is a flowchart illustrating a location storing step of a method for controlling a smart key unit for a vehicle according to an embodiment of the present invention.
7 is a flowchart illustrating a return trace step of a method for controlling a smart key unit for a vehicle according to an embodiment of the present invention.
8 is a detailed flowchart of a return trace step of a method for controlling a smart key unit for a vehicle according to an embodiment of the present invention.
9 is a detailed flowchart of a return trace 1 mode during a return trace step of a method for controlling a smart key unit for a vehicle according to an embodiment of the present invention.
10 is a detailed flowchart of a return trace 2 mode during a return trace step of a method for controlling a smart key unit for a vehicle according to an embodiment of the present invention.
11 is a schematic perspective view of a vehicle smart key unit according to another embodiment of the present invention.
12 is a schematic diagram of a vehicle smart key unit according to another embodiment of the present invention.

Hereinafter, a smart key unit for a vehicle and a control method thereof will be described with reference to the drawings.

1 is a schematic perspective view of a vehicle smart key unit according to an embodiment of the present invention, Figure 2 is a schematic configuration diagram of a vehicle smart key unit according to an embodiment of the present invention, Figure 3 A schematic diagram showing the positional movement on the XYZ coordinate system is shown, FIG. 4 is a diagram showing the relative positional movement and the rotational movement on the XY plane of the XYZ coordinate system, and FIG. 5 is an embodiment of the present invention. FIG. 6 is a flowchart illustrating a method for controlling a smart key unit for a vehicle, and FIG. 6 is a flowchart illustrating a location storing step of the method for controlling a smart key unit for a vehicle according to an embodiment of the present invention, and FIG. A flowchart of a return trace step of a method for controlling a smart key unit for a vehicle according to an embodiment is shown, and FIG. 8 shows a vehicle according to an embodiment of the present invention. A detailed flowchart of the return trace step of the smart key unit control method is shown, and FIG. 9 is a detailed flowchart of the return trace 1 mode of the return trace step of the smart key unit control method for a vehicle according to an embodiment of the present invention. 10 is a detailed flowchart of a return trace 2 mode during a return trace step of a method for controlling a smart key unit for a vehicle according to an embodiment of the present invention, and FIG. 11 shows a smart key for a vehicle according to another embodiment of the present invention. A schematic perspective view of the unit is shown, and FIG. 12 shows a schematic block diagram of a smart key unit for a vehicle according to another embodiment of the present invention.

The smart key unit 10 for a vehicle according to an embodiment of the present invention includes a housing 100, a sensor unit 200, an input button unit 300, a control unit 20, a storage unit 30, It includes a calculator 40 and a display unit 500. As shown in FIG. 1, the housing 100 of the vehicle smart key unit 10 according to the present embodiment includes a housing cover 110 and a housing body 120, and a housing cover ( The 110 and the housing body 120 are fastened to each other to form an inner space in which other components are disposed. A printed circuit board (not shown) is disposed inside the housing 100, and other components described below are disposed on the printed circuit board to achieve electrical communication.

The sensor unit 200 includes an acceleration sensor 210, a geomagnetic field sensor 220, and a gravity sensor 230. The sensor unit 200 may include a housing 100 of a smart key unit for a vehicle, more specifically, a housing ( It is disposed on the printed circuit board (not shown) disposed inside the 100 and detects the acceleration and the geomagnetism according to the movement of the vehicle smart key unit 10, that is, the movement of the housing 100.

The acceleration sensor 210 of the sensor unit 200 detects the acceleration of the moving state of the smart key unit 10 for the vehicle, and the acceleration sensor 210 includes a plane acceleration sensor 211 and a gravity acceleration sensor 213. . The plane acceleration sensor 211 detects the acceleration of the movement state on the reference plane of the housing 100 of the vehicle smart key unit 10, that is, the XY plane parallel to the surface, and the gravity acceleration sensor 213 is located on the reference plane. The acceleration of the movement state in the vertical direction, that is, the Z axis direction is detected. As shown in FIG. 3, a moving position of the smart key unit 10 for a vehicle may be displayed in a space formed of a three-dimensional coordinate axis XYZ, from a starting point O, that is, a position point P1, P2, P3, P4, ..., Pn-2, Pn-1 may be represented as a plurality of location points to the end point (Pn). This location point is obtained through storage for each scan period ns to be detected during the movement of the vehicle smart key unit 10. Here, the X-Y plane represents a reference plane parallel to the surface and the Y axis is set to the left north in this embodiment. The Z axis is the direction axis perpendicular to the reference plane parallel to the surface and represents the elevation of the surface. As such, the speed and the movement distance in the corresponding axial direction may be calculated and calculated based on the acceleration information in the respective axial directions detected by the acceleration sensor 210. The geomagnetic field sensor 230 is a sensor that provides azimuth information and may detect azimuth information of the smart key unit 10 for the vehicle in response to the magnetic field. In addition, the gyro sensor 250 is implemented as a three-axis gyro sensor in the present embodiment, the gyro sensor 250 detects and outputs the angular acceleration for three axes of the smart key unit 10 for the vehicle smart key unit ( The reference plane of 10) may be used to perform a correction function for correcting the detected signal according to the rotation state of the vehicular smart key unit 10, which does not coincide in parallel with the indicator. For example, the state of movement of the vehicular smart key unit 10 on the reference plane is shown in FIG. 4. For ease of explanation, the movement of the vehicular smart key unit 10 is assumed to occur on the reference plane. Moving from the starting point O (x0, y0) to P1 (x1, y1) and P2 (x2, y2), the moving coordinate axis r-k is formed on the vehicle smart key unit 10. Here, the k-axis of the vehicle smart key unit 10 starts at an angle θ with respect to the Y-axis, which is the left-hand axis at the starting point O, and changes to θ1 in the process of moving from P1 to P2, such an angular change is the gyro sensor 250. By performing the angle correction using the angular acceleration detected in, even when a change in the reference orientation of the vehicle smart key unit 10 occurs, the stable orientation display function may be performed by reflecting the change.

The input button unit 300 is a component for generating an operation signal according to a user's intention. In this embodiment, the input button unit 300 includes a power button 310, an operation button 320, and a selection button 330. ). The power button 310 may execute a power on / off function for operating the vehicle smart key unit 10 or a standby mode function to achieve a standby state for minimizing power consumption. The selection of the plurality of mode functions may take a configuration that distinguishes through differences in operating time. The operation button 320 is implemented as a button for selecting and operating an operation mode that the user wants to select, such as selecting a return mode for start to return operation or storing the position by the user as an operation button selected by the user. . That is, the operation button 3200 may be manipulated by a user and implemented as an input means for confirming a start point and an end point in a process of storing or returning a location point.

The selection button 330 may achieve a selection function such as volume adjustment of a voice output signal through the sound output unit 600.

In addition, an input / output port 400 may be provided at a lower side of the vehicle smart key unit 10 of the present invention to take a configuration for transmitting and receiving data with the storage unit 30 provided in the vehicle smart key unit 10, Various modifications are possible, such as a function of charging a power supply unit such as a battery disposed therein.

The storage unit 30 is disposed on a printed circuit board (not shown) disposed inside the housing 100, and the storage unit 30 stores sensing data sensed by the sensor unit 200. The calculation unit 40 calculates movement data for the movement state of the housing 100, that is, the vehicle smart key unit 10, based on the sensing data sensed by the sensor unit 200. The control unit 20 is electrically connected to the sensor unit 200, the input button unit 300, the display unit 500, the storage unit 30, and the operation unit 40 to control the storage unit 30 and the operation unit 40. Apply the signal to execute the position save function and the return trace function.

The display unit 500 is disposed in the housing 100, and the display unit 500 displays a return orientation in the process of returning from the end point to the start point according to a control signal from the control unit 20. The display portion 500 includes a direction display portion 510 and a height display portion 520, wherein the direction display portion 510 displays a planar orientation on a plane parallel to the index of the return orientation, and the high display portion 520 returns the return orientation. It is provided with the height display part which shows the orientation on the direction perpendicular to the index of.

The smart key unit 10 for a vehicle according to an embodiment of the present invention may further include a separate output unit. That is, as shown in FIG. 2, the sound output unit 600 and the vibration output unit 700 may be provided, and the control unit 20 starts or progresses the operation mode in a process of executing a predetermined operation mode. To output the sound signal or vibration signal corresponding to the operation mode preset and stored in the storage unit 30 to the sound output unit 600 and / or the vibration output unit 700 in order to guide to the end, etc. The sound or vibration state according to the additional sound signal or the vibration signal may be output to enable the user to quickly recognize the current operating state through hearing or touch. For example, in the case of sound, it may take a structure to individually correspond to the pattern of the sound corresponding to the operation mode, and in the case of vibration may correspond to the operation mode by changing the vibration period or the vibration pattern.

The control method of the vehicle smart key unit 10 according to the exemplary embodiment as described above will be described with reference to FIGS. 5 to 10.

First, the vehicle smart key unit control method according to an embodiment of the present invention includes a providing step (S1), a position storing step (S10) and a return trace step (S20), the vehicle smart key described in the providing step (S1) A key unit 10 is provided. In order to avoid duplicate description, the structure of the vehicle smart key unit 10 is replaced with the above.

After the vehicle smart key unit 10 is provided in the providing step S1, the control unit 20 executes a position storing step S10 for storing the position from the start point to the end point according to a signal input by the user. . That is, the position from the start point to the end point according to the input signal and the end signal of the operation button 320 of the input button unit 300, more specifically, the position detected according to a preset scan period Detect and store information.

The location storing step S10 according to an embodiment of the present invention includes a location point sensing storage step S11, an input sensing step S123, and a location point end determination step S125. As shown in FIG. 6, in the location point sensing storage step S11, the sensor unit 300 detects and computes an orientation sensing signal including acceleration and geomagnetic to store the location point. The location point sensing storage step S11 includes a sensing step S110, an operation step S111, a storage step S113, a scan period comparison step S115, a location point storage step S120, and a scan period comparison step S121. It includes. First, in the sensing step S110, the sensor unit 300 detects an orientation detection signal including an acceleration and a geomagnetism according to a control signal of the controller 20. After the sensing step S110 is completed, the control unit 20 executes the calculation step S111 by applying a calculation control signal to the calculation unit 40. That is, in operation S111, the calculator 40 calculates a current position based on the orientation detection signal sensed in the sensing step S110 according to the operation control signal of the controller 20. That is, the current position may be calculated based on the origin point, and the current position with respect to the starting point as the origin may be calculated using the acceleration information, the geomagnetic field information, and the angular acceleration information obtained therefrom.

After the calculation step S111 is completed, the control unit 20 applies a storage control signal to the storage unit 30 to store the current position information obtained as a result of the calculation by the operation unit 40 in the storage unit 30. Thereafter, the controller 20 executes a scan period comparison step S115 in which the position point repetition counter nt is preset and compared with the position scan counter ns stored in the storage unit 20. The position scan counter ns is the number of operations corresponding to the position scan period Ts, where the position scan period Ts represents a storage period for storing the position point, and the position point repetition counter nt is the number of repetitions of the operation cycle. As a counter for determining whether the preset position scan period Ts has been reached, the position when the position point repetition counter nt reaches the number of position scan counters ns is regarded as the current position, and the current position information is positioned. Save as a point.

If it is determined in the scan period comparison step S115 that the location point repetition counter is the same as the location scan counter corresponding to the location scan period, the control unit 20 proceeds to step S120. In the position point repetition counter initialization step (S120), the position point counter nt is initialized. On the other hand, if it is determined in step S115 that the position point repetition counter nt has not reached the position scan counter ns, the control unit 20 executes step S117. In the position point repetition counter increment step S117, the control unit 20 increments the position point repetition counter nt by one, and the control unit 20 switches the control flow back to step S110 and repeats the above steps.

After the location point detection storage step S11 is completed, the control unit 20 executes step S123, and the control unit 20 detects whether a signal is input through the input button unit 300. That is, an input sensing step S125 for detecting whether an end signal input by a user is input is executed. Thereafter, the controller 20 executes the location point termination determination step S125, and determines whether the input signal detected in the location point termination determination step S125 is the end point of the location point. That is, when the user arrives at the end point and determines whether there is an end signal input through the input button unit 300, if it is determined that the end signal is input in step S125, the control unit 20 determines that the end signal is different. A trace waiting step S127 is performed to minimize power consumption by detecting and waiting whether an input signal for executing the operation mode, that is, the return trace mode, is input.

On the other hand, if the signal input through the input button unit 300 in the location point end determination step (S125) is not the location end signal, the location point detection storage step (S11) is repeated.

Then, when the input signal for the operation of the return trace mode by the user is input in the trace waiting step (S127), the control unit 20 executes the return trace step (S20).

In the return trace step, the control unit 20 displays the return orientation from the end point to the start point according to a mode signal input from the input button unit 300, that is, a signal input to execute an operation mode for operating the return trace. Let) display. The return trace step S20 includes a return trace input signal detection step S21 and a return trace mode comparison setting step S22. The return trace input signal detecting step S21 detects the input return trace input signal indicating the operation of the return trace operation mode through the input button unit 300, and the return trace input comparison setting step S22 is the return trace input signal. The return trace input signal sensed in the sensing step S21 is compared to the return trace mode including the return trace 1 mode and the return trace 2 mode, which are preset and stored in the storage unit 30, and set one of them to the return trace mode. do. The return trace 1 mode indicates an operation mode that detects the current position at a predetermined time interval, that is, every scan cycle, and stores the position as position point information in the position storing step and sequentially traces it back during the return trace step. In the position storing step, orientation information such as coordinates relative to the start point and the end point is stored, and the return mode indicates the operation mode in which the trace is returned in the direction from the end point toward the start point.

Step S22 includes the return trace mode comparison step S23 and the return trace mode setting steps S25 and S27. The control unit 20 controls the input button unit 300 by the user in the return trace mode comparison step S23. Determining which is the return trace mode input through. If it is determined in step S25 that the selected mode is the return trace 1 mode, the control unit sets the operation mode selected by the user to the return trace 1 mode and executes subsequent steps. On the other hand, if it is determined that the selected mode in step S25 is not the return trace 1 mode, the controller sets the operation mode selected by the user to the return trace 2 mode and executes the subsequent step.

When it is set in step S25 and the return trace 1 mode is executed, the control unit 20 applies the control signal for executing the return trace 1 mode to execute step S25a. Step S25a is a return trace 1 mode execution step. The return trace 1 mode execution step includes a point comparison display step S251, a proximity point confirmation step S253, and a return status confirmation step S257.

In the point comparison display step S251, the control unit 20 displays a display control signal for indicating a current location point indicating a current location and a target location point indicating a target location to which the user should follow. 510 and / or the high and low display unit 520 to execute a predetermined display function. The point comparison display step S251 includes a current position detection step S2510, a current position calculation step S2511, a current position comparison step S2513, and a current position movement determination display step S2515. In the current position detection step S2510, the controller 20 applies a detection control signal to the sensor unit 200 to detect an orientation detection signal including an acceleration and a geomagnetism at the current position. That is, each scan cycle detects a predetermined orientation detection signal through the acceleration sensor 210, the geomagnetic field sensor 230, and the gyro sensor 250 of the sensor unit 200.

After the current position detection step S2510 is completed, the control unit 20 advances the control signal to the current position calculation step S2511 to present the current positions P; P1, P2, ..., Pn-1, Pn, FIG. Operation). The calculation of the current position P is performed based on an orientation detection signal including acceleration and angular acceleration and geomagnetic field sensing information of the XYZ axis detected in the current position sensing step S2510, on an XY coordinate system as a reference plane parallel to the ground surface. The movement on the Z axis represents the elevation movement, which can be calculated by integrating and calculating the velocity and the movement distance in the predetermined direction.

Thereafter, the control unit 20 applies a control signal for executing step S2513, and the control unit 20 compares the current position P information calculated in the current position calculating step S2511 with the target position Pn. The position comparison step S2513 is executed to determine in which direction movement is required. In the current position comparison step S2513, the target position Pn ends in the return trace 1 mode among the position point information sequentially stored from the start point to the end point in the position information detected and stored for each scan period in the position storage step S10. The target point as a comparison target with the current position in the step of sequentially tracing back from the point to the start point is shown. The position information of the current position P and the target position Pn is compared to calculate which direction in the X-Y-Z axis is necessary. After the current position comparison step S2513 is finished, the controller 20 determines whether the movement is necessary according to the comparison result in the current position comparison step S2513, and when the movement is necessary, causes the display unit 500 to display the movement direction. The current position movement determining step S2514 is executed. That is, the current position movement determining step (S2514) includes a current position movement necessary determination step (S2515) and a display of whether the current position movement is required (S2517), and the current position P is determined in the current position movement necessary determination step (S2515). It is determined whether to move from the identified error of the target position (Pn). If the control unit 20 determines that movement is necessary, the control unit 20 proceeds to step S2517 to transmit a movement indication corresponding to the predetermined movement need to the display unit 500 to execute the predetermined direction and elevation display. . On the other hand, when the controller 20 determines that movement is unnecessary because the controller 20 matches the current position P and the target position Pn or is substantially the same within a preset error range, the controller controls movement to execute separate movement display. The control flow proceeds to step S253 without transmitting a signal to the display unit 500.

When the point comparison display step S251 is completed, the control unit 20 executes the proximity point checking step S253. In step S253, the controller 20 verifies the proximity of the current location point, which is information on the current location P, to the target location point, which is information on the target location Pn. That is, as shown in FIG. 9, the proximity point checking step S253 includes a proximity target position determination step S2531 and a proximity target equality determination step S2533, and the control unit 20 determines the proximity target position determination step. In operation S2531, a difference between the current position P, the current target position Pn, and the next target position Pn-1 is compared to determine which target position is close.

In the case where it is determined in step S2531 that the difference between the current position P and the current target position Pn is smaller than the difference between the current position P and the next target position Pn-1, that is, the current position P Is determined to be closer to the current target position Pn than the next target position Pn-1, the control unit 20 returns the control flow to step S251 to repeat the control flow.

On the other hand, if it is determined in step S2531 that the difference between the current position P and the current target position Pn is greater than the difference between the current position P and the next target position Pn-1, that is, the current position If it is determined that (P) is closer to the next target position Pn-1 than the current target position Pn, the control unit 20 proceeds to the next step of determining whether the target target is the same or not (S2533). In step S2533, the determination whether the proximity target is the same is performed to determine whether is a start position O. FIG. In step S2533, the control unit 20 determines whether or not the next target position Pn-1 is the start position O. The control unit 20 determines that the next target position Pn-1 is determined to be the next target position Pn-1. If it is determined that the start position (O), the control flow proceeds to step 255, and if it is determined that the next target position (Pn-1) is the start position (O), the control flow is switched to step S2535 to the target position for the target position. After the counter n is decremented by 1, the control flow returns to step S251.

The control unit 20 checks whether the current position point P coincides with the starting w point or the starting position O in the return checking step S255, and the returning checking step S255 detects the return current position. A calculation step S2550, a position return determining step S2551, and a position return occupancy time determination step S2553 are included. The control unit 20 causes the sensor unit 200 to detect the orientation detection signal including the acceleration and the geomagnetism at the current position and calculate the current position in the return current position detection calculation step (S2550). Thereafter, the controller 20 compares the current position and the start position O detected in operation S2550 with a preset distance error Pst preset and stored in the storage unit 30 (S2551). Run In step S2551, the controller 20 determines whether the distance difference between the current position and the starting position is within an acceptable range of preset distance error Pst. In step S2551, the distance difference between the current position and the starting position is determined. If the distance is greater than or equal to the preset distance error Pst, the controller 20 determines that the distance from the current position from the start position is unacceptable and needs to be moved, and returns the control flow to step S251. On the other hand, if the position error between the current position (P) and the start position (O) in step S2551 is smaller than the preset distance error (Pst), the control unit 20 proceeds to the control flow to step S2553 to determine the position return occupancy time ( S2553) is executed. That is, the occupancy time counter nst indicating the occupancy time and the occupancy setting time counter nsto indicating the preset occupancy setting time are compared. When the occupancy time counter nst is less than or equal to the occupancy setting time counter nsto, the controller 20 ) Increments the occupancy time counter nst and returns the control flow to step S2550. On the other hand, when the occupancy time counter nst is greater than the occupancy set time counter nsto, the controller 20 determines that the user has reached the starting point by determining that the user intends to occupy the current position, and then returns to the return trace 1 mode. Quit.

On the other hand, if it is determined that the selected mode in step S27 is not the return trace 1 mode, the control unit sets the operation mode selected by the user to the return trace 2 mode and executes the subsequent step, which is set to step S27 to return trace 2 When the mode is executed, the control unit 20 executes step S27a by applying a control signal for executing the return trace 2 mode. Step S27a is a return trace 2 mode execution step, and the return trace 2 mode execution step includes a point comparison display step S271 and a return status checking step S275.

In the point comparison display step S271, the control unit 20 displays a display control signal for indicating a current location point indicating a current location and a target location point indicating a target location to which the user should follow. 510 and / or the high and low display unit 520 to execute a predetermined display function. The point comparison display step S271 includes a current position detection step S2710, a current position calculation step S2711, a current position comparison step S2713, and a current position movement determination display step S2715. In the current position detection step S2710, the controller 20 applies a detection control signal to the sensor unit 200 to detect an orientation detection signal including an acceleration and a geomagnetism at the current position. That is, each scan cycle detects a predetermined orientation detection signal through the acceleration sensor 210, the geomagnetic field sensor 230, and the gyro sensor 250 of the sensor unit 200.

After the current position detection step S2710 is completed, the control unit 20 advances the control signal to the current position calculation step S2711 to present the current positions P; P1, P2, ..., Pn-1, Pn, FIG. Operation). The calculation of the current position P is performed based on an orientation sensing signal including acceleration and angular acceleration and geomagnetic field sensing information of the X-Y-Z axis detected in the current position sensing step S2710.

Thereafter, the control unit 20 applies a control signal for executing step S2713, and the control unit 20 compares the current position P information calculated in the current position calculating step S2711 with the target position Pn. The position comparison step S2713 is executed to determine in which direction movement is required. In the current position comparison step S2713, the target position Pn ends in the return trace 2 mode among the position point information sequentially stored from the start point to the end point in the position information detected and stored for each scan period in the position storage step S10. The target point as a comparison target with the current position in the step of sequentially tracing back from the point to the start point is shown. The position information of the current position P and the target position Pn is compared to calculate which direction in the X-Y-Z axis is necessary. After the current position comparison step S2713 is finished, the controller 20 determines whether the movement is necessary according to the comparison result in the current position comparison step S2713, and displays the movement direction when the movement is required. The current position movement determining step S2714 is executed. That is, the current position movement determining step (S2714) includes a current position movement necessary determination step (S2715) and a display of whether the current position movement is required (S2717). It is determined whether to move from the identified error of the target position (Pn). If the control unit 20 determines that movement is necessary, the control unit 20 proceeds to step S2717 to transmit a movement indication corresponding to the predetermined movement need to the display unit 500 to execute the predetermined direction and elevation display. . On the other hand, when the controller 20 determines that movement is unnecessary because the controller 20 matches the current position P and the target position Pn or is substantially the same within a preset error range, the controller controls movement to execute separate movement display. The control flow proceeds to step S273 without transmitting a signal to the display unit 500.

When the point comparison display step S271 is completed, the control unit 20 executes a return status checking step S275. The control unit 20 checks whether the current position point P coincides with the starting point or the starting position O in the return checking step S275, and the returning checking step S275 includes the return current position detecting operation. A step S2750 and a position return determining step S2751 and a position return occupancy time determining step S2753 are included. The control unit 20 causes the sensor unit 200 to detect the orientation detection signal including the acceleration and the geomagnetism at the current position and calculate the current position in the return current position detection calculation step (S2750). Thereafter, the controller 20 compares the current position and the start position O detected in operation S2750 with the preset position error Pst preset and stored in the storage unit 30 (S2751). Run In step S2751, the control unit 20 determines whether the distance difference between the current position and the start position is within an acceptable range of preset distance error Pst. In step S2751, the distance difference between the current position and the start position is determined. If the distance is greater than or equal to the preset distance error Pst, the control unit 20 determines that the distance from the current position from the starting position is unacceptable and needs to be moved, and returns the control flow to step S271. On the other hand, if the position error between the current position (P) and the start position (O) in step S2751 is smaller than the preset distance error (Pst), the control unit 20 proceeds to the control flow to step S2753 to determine the position return occupancy time ( S2753) is executed. That is, the occupancy time counter nst indicating the occupancy time and the occupancy setting time counter nsto indicating the preset occupancy setting time are compared. When the occupancy time counter nst is less than or equal to the occupancy setting time counter nsto, the controller 20 ) Increments the occupancy time counter nst and returns the control flow back to step S2750. On the other hand, if the occupancy time counter nst is greater than the occupancy set time counter nsto, the control unit 20 determines that the user has reached the starting point by determining that the user intends to occupy the current position, and then returns to the return trace 2 mode. Quit.

In the above embodiment, the sound output unit 600 and the vibration output unit 700 execute predetermined sound and vibration outputs during the operation mode selection and the start to the end of the operation mode. The configuration is as described above.

On the other hand, the smart key unit for a vehicle in the above embodiment has been described with respect to a configuration including a sensor portion and a catch button portion, but may further include an image input and display device for achieving more accurate return information. That is, as illustrated in FIGS. 11 and 12, the vehicle smart key unit 10a may further include an image input unit 800 implemented by a CCD camera or the like and an image display unit 900 implemented by an LCD display or the like. . The image input unit 800 and the image display unit 900 make electrical communication with the control unit 20, respectively, and the image input unit 800 and the image display unit 900 are disposed on the rear surface of the housing 100. The smart key unit for a vehicle in the above embodiment uses a relative coordinate system and operates under conditions in which it is difficult to use an absolute position coordinate system. In order to increase the operation reliability thereof, the orientation information including more accurate orientation detection information is required. By operating the input button unit 300 of the vehicle smart key unit 10a at the point, the image information acquired through the image input unit 800 is extracted from the storage unit 30 in the return trace process to obtain the orientation reference information of the end point. As a fit, the return trace process may be executed for a more accurate position return. For example, after the user acquires and stores the image information in a specific direction at the end point through the image input unit, the image display unit acquires the image information acquired at the end point before starting the return operation according to the return trace mode in the return trace step. A more accurate return trace process may be implemented by performing a return trace operation after adjusting the orientation at the end point by checking through 900. In addition, the image information input through the image input unit is displayed on the image display unit, and the image information is acquired through the new image input unit before the start of the return trace mode, and cross-comparatively compares the two image information to determine the degree of matching at the end point. Various implementations are possible according to design specifications, such as further performing the process of checking the orientation of.

The above embodiments are examples for describing the present invention, and the present invention is not limited thereto, and various embodiments of the present invention may be implemented in a range of implementing a smart key unit for a vehicle and a method of controlling the same. Configuration is possible.

10 ... Vehicle Smart Key Unit 100 ... Housing
200 ... Sensor 210 ... Acceleration sensor
220.Geomagnetic sensor 230 .... Gyro sensor
300 ... Input button 400 ... Input port
500 ... Display 600 ... Audio output
700 ... Vibration output 800 ... Video input
900 video display

Claims (17)

A sensor unit disposed in a housing of a smart key unit for a vehicle and detecting acceleration and a geomagnetism according to movement of the housing;
An input button unit disposed in the housing and operated by a user and configured to set a start point and an end point;
A storage unit which stores sensing data sensed by the sensor unit;
A calculator configured to calculate movement data of the housing based on sensed data sensed by the sensor unit;
A control unit electrically connected to the sensor unit, the input button unit, the storage unit, and the calculation unit to apply a control signal to the storage unit and the calculation unit;
And a display unit disposed in the housing and configured to display a return orientation in a return trace process returning from the end point to the start point according to a control signal from the controller. The method of claim 1,
The sensor unit:
An acceleration sensor for detecting acceleration in a moving state,
An earth magnetic field sensor for detecting an azimuth angle of the housing;
Smart vehicle unit comprising a gyro sensor for detecting the angular acceleration of the housing. The method of claim 2,
The acceleration sensor is:
A planar acceleration sensor for sensing acceleration of a state of movement on a reference plane of the housing parallel to the surface;
And a gravitational acceleration sensor for sensing an acceleration in a movement state in a direction perpendicular to the reference plane of the housing. The method of claim 1,
The display unit:
A direction indicator that displays a planar orientation on a plane parallel to the index of the return orientation;
And a high and low display for displaying the orientation on the direction perpendicular to the indicator of the return orientation. The method of claim 1,
An image input unit capable of acquiring image information of the end point;
And a video display unit capable of displaying video information of the end point when starting the return trace process. A sensor unit for sensing acceleration and geomagnetism, an input button unit manipulated by a user and configured to set a start point and an end point, a storage unit storing sensing data sensed by the sensor unit, and movement data of the housing And a control unit for applying a control signal to the storage unit and the operation unit, and a display unit for displaying a return orientation in the process of returning from the end point to the start point according to a control signal from the control unit. Providing a smart key unit for a vehicle,
A position storing step of detecting and storing a position from the start point to the end point according to an input signal and an end signal input from the input button unit;
And a return trace step of displaying a return orientation from the end point to the start point according to a mode signal inputted from the input button unit. The method according to claim 6,
The location storing step is:
A position point detection storage step of sensing and calculating an orientation detection signal including an acceleration and a geomagnetism by the sensor unit to store a position point;
An input sensing step of detecting whether a signal is input through the input button unit;
And a location point end determination step in which the sensed input signal indicates an end point of the location point. The method of claim 7, wherein
The location point detection storage step is:
A sensing step of sensing, by the sensor unit, an orientation sensing signal including acceleration and geomagnetic;
A calculation step of calculating a current position based on the orientation detection signal detected in the detection step;
A storing step of storing the calculated current position;
A scan period comparison step of comparing a location scan period stored in the storage unit with a preset location point repetition counter;
A location point storage step of storing a current position as a location point in the storage unit when the location point repetition counter is equal to the location scan period in the scan period comparison step;
A location point repetition counter initialization step of initializing the location point repetition counter after the location point storing step;
And a location point repetition counter increment step of incrementing the location point repetition counter and returning to the sensing step when the location point repetition counter is less than the location scan period in the scan period comparison step. Control method. The method of claim 7, wherein
And if the signal inputted through the input button unit is not a location end signal in the location point end determination step, repeating the location point detection storage step. The method according to claim 6,
The return trace step is:
A return trace input signal sensing step of detecting a return trace input signal input through the input button unit;
And a return trace mode comparison setting step (S22) for comparing and setting a return trace mode including the return trace 1 mode and the return trace 2 mode, wherein the return trace input signal is preset in the storage unit. Smart key unit control method. The method of claim 10,
When the return trace mode is a return trace 1 mode,
A point comparison display step of displaying a current position point indicating a current position and a target position point indicating a target position to be followed by the user after the return trace mode is set in the return trace mode comparison setting step;
A proximity point checking step of indicating the proximity of the current location point to the target location point;
And a return checking step of checking whether the current location point coincides with the starting point. 12. The method of claim 11,
The point comparison display step is:
A current position sensing step of sensing, by the sensor unit, an orientation detection signal including an acceleration at a current position and a geomagnetic;
A current position calculation step of calculating a current position based on the orientation detection signal detected in the current position detection step;
A current position comparison step of comparing the current position with a current target position;
And a current position movement determination display step of determining whether the movement is necessary from the comparison result in the current position comparison step and displaying whether the movement is necessary. 13. The method of claim 12,
The proximity point checking step is:
A proximity target position determination step of comparing a difference between the current position, the current target position, and the next target position to determine a close target position;
If it is determined that the current position is closer to the next target position than the current target position in the proximity target position determination step, determining whether or not the next target position is the same as the starting position; Smart key unit control method for a vehicle, characterized in that. The method of claim 13,
The step of checking whether the return is:
A return current position detection calculation step of sensing by the sensor unit an orientation detection signal including an acceleration at the current position and a geomagnetism;
A position return determining step of comparing a distance difference between the current position and the start position and a preset distance error Pst preset and stored in the storage;
And a position return occupancy time determining step of comparing the occupancy time (nst) at the current position with a preset occupancy setting time (nsto). The method of claim 10,
When the return trace mode is a return trace 2 mode,
A point comparison display step of displaying a current position point indicating a current position and a start point indicating the start position at which the user should follow the movement, after the return trace mode is set in the return trace mode comparison setting step;
And a return checking step of checking whether the current location point coincides with the starting point. 16. The method of claim 15,
The point comparison display step is:
A current position sensing step of sensing, by the sensor unit, an orientation detection signal including an acceleration at a current position and a geomagnetic;
A current position calculation step of calculating a current position based on the orientation detection signal detected in the current position detection step;
A current position comparison step of comparing the current position with the start position;
And a current position movement determination display step of determining whether the movement is necessary from the comparison result in the current position comparison step and displaying whether the movement is necessary. 17. The method of claim 16,
The step of checking whether the return is:
A return current position detection calculation step of sensing by the sensor unit an orientation detection signal including an acceleration at the current position and a geomagnetism;
A position return determining step of comparing a distance difference between the current position and the start position and a preset distance error Pst preset and stored in the storage;
And a position return occupancy time determining step of comparing the occupancy time (nst) at the current position with a preset occupancy setting time (nsto).
KR1020100122227A 2010-12-02 2010-12-02 Smart key unit for a vehicle KR20120060625A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014157831A1 (en) * 2013-03-26 2014-10-02 주식회사 코리아하이텍 Vehicle smart key
KR20150121852A (en) * 2014-04-22 2015-10-30 엘지이노텍 주식회사 Receiving apparatus and method, and transmitting method for determining position
WO2016165336A1 (en) * 2015-09-06 2016-10-20 中兴通讯股份有限公司 Navigation method and terminal
CN107199989A (en) * 2016-03-18 2017-09-26 上海海拉电子有限公司 A kind of remote-control key
CN114120503A (en) * 2021-11-02 2022-03-01 中山市宇信科技有限公司 Ultralow-power-consumption Internet of things entrance guard card reader based on Lora Internet of things technology

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014157831A1 (en) * 2013-03-26 2014-10-02 주식회사 코리아하이텍 Vehicle smart key
KR20150121852A (en) * 2014-04-22 2015-10-30 엘지이노텍 주식회사 Receiving apparatus and method, and transmitting method for determining position
WO2016165336A1 (en) * 2015-09-06 2016-10-20 中兴通讯股份有限公司 Navigation method and terminal
CN107199989A (en) * 2016-03-18 2017-09-26 上海海拉电子有限公司 A kind of remote-control key
CN114120503A (en) * 2021-11-02 2022-03-01 中山市宇信科技有限公司 Ultralow-power-consumption Internet of things entrance guard card reader based on Lora Internet of things technology
CN114120503B (en) * 2021-11-02 2024-03-26 中山市宇信科技有限公司 Ultra-low power consumption Internet of things access card reader based on Lora Internet of things technology

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