KR100872628B1 - Parking releasing apparatus and method for operating the same - Google Patents

Abstract

The present invention relates to a parking releasing system and a method of operating the same, and when a certain shock pattern is detected from the outside, it is recognized as a password to release the parking state, so that the vehicle can be manually moved. The present invention provides an acceleration sensor that senses an impact applied from the outside and outputs it as a detection signal, a light emitting device that emits light when an impact is applied from the outside, and a sensor power supply for providing driving power to the acceleration sensor and the light emitting device. And generating a password according to a pattern of the detection signal from the acceleration sensor, and when the password matches a pre-registered setting password, emits the light emitting element, changes the shift lever to a neutral gear, and releases the parking brake. And an electronic control unit having an algorithm.

Vehicle, Car, Parking, Parking, ECU, EPB, TCU, Accelerometer

Description

Parking releasing apparatus and method for operating the same}

1 is a perspective view illustrating an appearance of a vehicle to which a parking releasing device is attached according to an exemplary embodiment of the present invention.

2 is a block diagram illustrating a configuration of a de-parking system having a de-parking device according to an embodiment of the present invention.

3 is a circuit diagram of the unparking system according to an embodiment of the present invention.

4 is a perspective view of the sensing element.

5 is a flowchart illustrating an operation process of a parking cancellation system according to an exemplary embodiment of the present invention.

6 is a flowchart illustrating a setting password registration process according to an embodiment of the present invention.

7 is an experimental graph showing the output waveform of the acceleration sensor for one shock.

8 is an experimental graph showing a waveform in which a shock wave is enlarged.

9 is an experimental graph showing an experiment in which the password is generated by the impact of knock or the like.

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

100: unparking device 110: sensor power

120: acceleration sensor 130: light emitting element

200: electronic control unit 210: EPB

220: TCU

The present invention relates to a parking releasing system and a method of operating the same, and when a certain shock pattern is detected from the outside, it is recognized as a password to release the parking state, so that the vehicle can be manually moved.

When parking a vehicle in a parking lot, there is a case where the vehicle is parked in a row in order to park one's vehicle in front of another vehicle parked due to insufficient parking capacity. In the case of blocking the front of another vehicle by the one-line parking as described above, the shifting lever of the vehicle is shifted to the neutral gear (N gear) and the parking brake (hand brake) is released. For this reason, if the shift lever is in the parking gear (P gear) or the parking brake is applied, the vehicle cannot be moved, causing problems.

In particular, in the case of a vehicle that is currently being applied or developed in a luxury vehicle, an electronic parking brake (EPB) system, which is an electronic parking brake, is sometimes applied. In the case of the EPB system, the parking brake is operated electronically and a key off apply is applied. Since the function is applied, the parking brake is operated irrespective of the driver's will, and thus the probability of creating such a difficult case is very high. Therefore, there is a need for the development of a system application that allows the vehicle to be manually moved slightly by releasing parking in an emergency from the outside.

As described above, a method and a system for solving the problem of the impossibility of manual movement of the vehicle occurring at the time of in-line parking of the vehicle and the application of the EPB are not devised at present. There is a method of releasing the door lock of the vehicle by a number or the like without a car key, but there is a risk of theft while releasing the door lock. In particular, the method of password verification using the keypad is very difficult to use the power of the system due to children's mischief etc. due to the curiosity of the surrounding people, etc. There is.

In order to solve the above problems, the present invention proposes a method of releasing the parking mode by applying a predetermined pattern shock, such as knocking, to a vehicle in a parking mode without inputting a keypad password.

The parking release system of the present invention includes an acceleration sensor for detecting an impact applied from the outside and outputting it as a detection signal, a light emitting device that emits light when an impact is applied from the outside, and a driving power source for the acceleration sensor and the light emitting device. Generates a password according to a sensor power supply and a pattern of the detection signal from the acceleration sensor, and when the password matches a pre-registered setting password, the light emitting element is turned on and the shift lever is changed to a neutral gear. And an electronic control unit having an algorithm for releasing the parking brake.

In addition, the acceleration sensor, the RC filter for removing the noise of the power supplied from the sensor power source, the sensing element to convert the capacitor value in accordance with the external shock, and the CVC module for converting the current according to the converted capacitor value And a low pass filter for low pass filtering the current output from the CVC module, and an amplifier for amplifying the low pass filtered signal and outputting the amplified signal to the electronic control unit.

The electronic control unit may provide driving power to the acceleration sensor and the light emitting device in the parking mode, and control the sensor power so as not to provide driving power to the acceleration sensor and the light emitting device in the parking mode. It is characterized by. In addition, it is determined that the parking mode is in the parking mode when the parking brake is applied by the electronic parking brake (EPB) or the parking gear by the transmission control unit (TCU).

The parking cancellation system may further include a setting switch for selecting a mode for registering the setting password.

In addition, the present invention, the step of registering the setting password to be authenticated when the parking release, the step of putting the parking release system into the sleep mode when the parking mode is in the standby state, the external shock detection from the acceleration sensor When a signal is generated, generating a password from the shock detection signal, and if the generated password matches the setting password, and including the step of releasing the parking mode to maintain a parking release state.

The setting of the setting password may include: switching to a setting password registration mode, sensing an external shock pattern with an acceleration sensor, generating and storing a number corresponding to the shock pattern as a setting password, and And flashing the generated setting password through the light emitting device.

In addition, the password generation, characterized in that when the shock from the outside for a certain time, the previous shock is not detected is reset.

In addition, releasing the parking mode and maintaining the parking release state changes the shift lever to the neutral gear and releases the parking brake.

In addition, when the parking mode is released and the vehicle moves by a predetermined distance, the vehicle returns to the parking mode, and when the parking mode is released, the parking mode is returned to the parking mode again.

Hereinafter, the detailed description of the preferred embodiments of the present invention will be described with reference to the accompanying drawings. In the following description of the reference numerals to the components of the drawings it should be noted that the same reference numerals as possible even if displayed on different drawings.

1 is a perspective view illustrating an appearance of a vehicle to which a parking releasing device is attached according to an exemplary embodiment of the present invention.

The unlocking device 100 of the present invention is attached to a windshield (or a portion of the vehicle body) of the vehicle and detects a predetermined number of impacts, such as knock, and matches a pattern (setting password) registered in advance. It performs the function of releasing the parking state at the time. The releasing of the parking state means that the parking gear (P gear) is converted to a neutral gear (N gear), and the parking brake is released when the parking brake is engaged.

The parking release device 100 includes an acceleration sensor, a light emitting device (eg, an LED), and a sensor power supply. When the parking release device has a predetermined pattern of impact, such as knocking, the acceleration sensor detects this and at the same time, Each time such a knock is detected, the light emitting device emits light so that a person can recognize it.

The parking unlocking device 100 registers and stores a number according to a predetermined shock pattern (for example, three consecutive knocks and two consecutive knocks again after waiting for two seconds) as a setting password, and later stores the shock of the same pattern in an acceleration sensor. When applying to the vehicle, the shift lever is moved to a neutral gear only for a predetermined time and a predetermined movement distance of the vehicle, and the EPB parking state is changed to a parking release state to enable movement of the vehicle.

In the method of transmitting the password, it is not a problem because the message can be attached to the glass or communicated with the driver (using a mobile phone or the like). In other words, if another vehicle is parked in front of your vehicle and it is difficult to remove your vehicle, you can find your password through a message on the other vehicle's glass or the owner's phone number on the vehicle's glass. After exiting, the parking release device attached to the vehicle is knocked out according to the pattern of the corresponding password to change the vehicle to the parking release state so that the other vehicle can be moved manually.

Since the parking deactivation device 100 uses a low-power acceleration sensor, current consumption is very low, and since only one acceleration sensor and a circuit and logic for processing the signal are included, there is an advantage that it can be easily implemented. In addition, the acceleration sensor is a sensor widely developed and used in a vehicle for extracting the acceleration of the vehicle, and it can be said that the reliability and verification of the vehicle are already sufficient.

FIG. 2 is a block diagram illustrating a de-parking system having a de-parking device according to an exemplary embodiment of the present invention, and FIG. 3 is a circuit diagram of the de-parking system.

The electronic control unit (ECU) 200 enters the parking mode based on signals of an electronic parking brake (EPB) 210, which is an electronic parking brake, and a transmission control unit (TCU) 220, which is a shift control unit. In this case, the sensor power source 110 is driven. The electronic control unit 200 determines that the parking mode is in the parking mode when the parking brake is applied at the EPB 210, which is the electronic parking brake, or when the parking gear is set at the TCU 220, which is the shift control unit.

When the sensor power source 100 is driven, the sensor power source 110 supplies driving power to the acceleration sensor 120 and the light emitting device 130. The acceleration sensor 120 and the light emitting device 130 share the ground GND for noise stiffness.

The acceleration sensor 120 supplied with power from the sensor power supply 110 receives power and removes noise and surge to supply power to the sensing element 121, and the output of the sensing element 121 is a voltage signal. The output is converted and input to the AD port of the electronic control unit. The sensing signal converted into the voltage signal by the electronic control unit 200 is noise-filtered through the low pass filter 123 (LPF) before being input into the electronic control unit and then amplified and input through the amplifier 124. The sensing element 121 is illustrated in FIG. 4, when an impact is applied to the sensing element 121, the shock is transmitted as an acceleration, and the proof mass moves upward by the acceleration. The capacitance value is changed by the mass, and the acceleration value is extracted by converting this value into a voltage in the CVC module 122 or reading the current value flowing and flowing for the circular recovery.

On the other hand, the reason for using the low pass filter (LPF; Low Pass Filter (123) as described above) is shown in the experimental graph of Figure 7, the experimental graph of Figure 7 shows the acceleration sensor output waveform for a shock, After the first shock, the output of the harmonic component due to vibration occurs. In this case, a low-pass filter (LPF) can be generated to process a signal by removing a certain threshold and generate a pulse for one impact. Such tuning can be manufactured considering the acceleration sensor selection and system implementation.

In addition, the experimental graph of FIG. 8 is the waveform which expanded the shock wave, and is a waveform when the waveform by an impact exceeds a predetermined value. The signal can be converted into an input signal by processing the signal with a threshold, hysteresis, and a filter.

On the other hand, the light emitting device (LED) 130, which is supplied with power from the sensor power source and is controlled by the electronic control unit 200 (ECU), lights up when the shock is detected. That is, the electronic control unit 200 that detects the impact by receiving the acceleration value from the acceleration sensor 120 drives the transistor every time there is a shock to emit light by flowing a current through the light emitting device 130 to the user. Indicate whether the shock is detected. The power supplied to the light emitting device 130 is used in the same way as the power of the acceleration sensor and is applied to the light emitting device through the LED protection resistor and filter.

 The electronic control unit 200 controls the sensor releasing device including the acceleration sensor and the light emitting device, and performs the setting of the switch by performing the control of the sensor power supply 110, the acceleration sensor 120 signal processing, and the light emitting device 130. 140 may be used to store the setting password. In addition, when the input password (for example, the knock pattern) checks the validity of the pre-registered setting password and the password is matched, the parking release to the EPB 210 and the TCU 220 using serial communication. By requesting the EPB 210 to release the parking brake and at the same time to the TCU 220 to convert to a neutral gear (N gear). In addition, when a predetermined time has passed in the parking release state or when the vehicle moves more than a predetermined distance based on the vehicle speed signal provided by the TCU 220, the parking request is made to the EPB 210 or the TCU 220. The EPB 210 causes the parking brake to be applied and simultaneously causes the TCU 220 to convert to the parking gear (P gear).

Meanwhile, the parking releasing system further includes a setting switch 140 for selecting a mode for registering the setting password, so that the user can change the setting password registration mode after registering the setting password by operating the setting switch. Make sure

5 is a flowchart illustrating an operation process of a parking cancellation system according to an exemplary embodiment of the present invention.

In order to operate the unlocking system of the present invention, a password (for example, a predetermined shock pattern) must be stored in advance and registered in the electronic control unit as a setting password (S502). After the setting password is registered as above (S502), the normal parking release system can be operated. When the setting password registration process (S502) is described with the flowchart of FIG. 6, when the setting switch is turned on (S602), the parking release system enters a mode for setting a password and supplies power to the sensor (S602). )do. When the password is input by knocking on the acceleration sensor, the parking release system generates the shock pattern as a setting password (S608) and stores it (S610). For example, if there is a shock such as knocking 3 times in a row-> Wait-> 5 times in a row-> Wait-> 2 times in a row-> Wait-> 7 times in a row, the setting password is set to '3527'. Create and save When the setting switch is off, the stored setting password is displayed to the user using a light emitting device such as an LED (S612), and then the setting mode is terminated (S614). In the method displayed on the light emitting device such as the LED, for example, the light is emitted at a time interval of 0.5 consecutive seconds, and the time interval of the separated numeral is maintained at about 1.5 seconds for display (S612).

On the other hand, when the setting password registration (S502) as described above is operating the system normally, when the ignition key (IG key) is off, and the parking mode (shift lever P gear, or parking brake is applied), The parking release system applies power to the acceleration sensor and the light emitting device, operates in a sleep mode (S504), and waits for a sensor signal.

When a shock is sensed by knocking of an outsider and the accelerometer sends a signal (S506), the unparking system wakes up due to the rising edge of the signal (S508) and continuously enters the shock. Counts. If the interval between the signals is more than a predetermined time is considered as the next numeric input to generate a password (S510). For example, if there is a shock such as knocking 3 times in a row-> Wait-> 5 times in a row-> Wait-> 2 times in a row-> Wait-> 7 times in a row, the password is generated as '3527' do. In addition, whenever a shock is detected, the system recognizes the shock as a signal, and turns on a light emitting device (LED) to inform the user of the sensor signal recognition.

When the password of a predetermined length input as described above is compared with a previously registered setting password (S512) and if it matches, the parking mode is released and the parking release state (parking release) (S514). That is, the EPB causes the parking brake to be released and at the same time the TCU converts into a neutral gear (N gear).

When the parking release state is released from the parking release state to be released, the parking state is converted to the parking state again after a predetermined time elapses after a parking release state or a certain distance shift (S516). That is, when a certain time has passed in the parking release state or when the vehicle moves more than a predetermined distance based on the vehicle speed signal provided by the TCU, the EPB causes the parking brake to apply the parking request to the EPB or the TCU. At the same time, the TCU converts it into a parking gear (P gear).

On the other hand, the experiment that the password is generated by the impact of knock, etc. is shown in the graph of Figure 9, in the case of giving a shock input, as shown in Figure 9 determines whether the interval between the impact is a predetermined time or more to extract the password can do. In the evaluation of FIG. 9, it can be seen that a consecutive password of 123456 has been input. If the distance between the numbers is too far, reset the password input as it is determined that the password input is incorrect. For example, as shown in FIG. 9, if too much time is consumed after inputting 123456 to input 2, the input of 123456 previously input is reset and a new password is input from 2.

In the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the patent scope of the present invention is not to be determined by the above-described embodiment, but the scope of the claims and equivalents will be apparent.

As described above, the de-parking device of the present invention uses a low-power acceleration sensor, so the current consumption is very low, and it consists of only one acceleration sensor, and a circuit and logic for processing the signal. . In addition, the system configuration is simple, so it is easy to develop and install for aftermarket.

In addition, if implemented as a single controller, only the operations for password and lock release are performed, so it is possible to use a low-cost microcomputer, and it is also easy to insert into other controllers (EPB and TCU) so that development cost and additional cost are not high. .

In addition, since an artificial device such as a keypad is not mounted outside the vehicle body, there is an effect that there is no damage by people other than the user.

In addition, since it can be very useful when an emergency occurs, there is an effect that can greatly affect the vehicle reliability and vehicle value determination.

Claims (11)

An acceleration sensor which detects an impact applied from the outside and outputs it as a detection signal; A light emitting device that emits light when it is detected that an impact is applied from the outside; A sensor power source for providing driving power to the acceleration sensor and the light emitting device; Generating a password according to the pattern of the detection signal from the acceleration sensor, when the password matches a pre-registered setting password, the algorithm to emit the light emitting element, change the shift lever as a neutral gear and release the parking brake Electronic control unit Unparking device comprising a. The method of claim 1, wherein the acceleration sensor, An R-C filter for removing noise of power supplied from the sensor power; A sensing element having a capacitor value converted according to an external impact, CVC module for converting the current according to the converted capacitor value, A low pass filter for low pass filtering the current output from the CVC module; An amplifier for amplifying the signal filtered by the low pass filter and outputs it to the electronic control unit Unparking device comprising a. The method of claim 1, wherein the electronic control unit is configured to provide driving power to the acceleration sensor and the light emitting device in the parking mode, and not to provide driving power to the acceleration sensor and the light emitting device in the parking mode. Unparking device to control sensor power. 4. The parking according to claim 3, wherein the parking brake is determined to be in parking mode when the parking brake is applied at the electronic parking brake (EPB) or the parking gear is at the transmission control unit (TCU). Release device. The apparatus of claim 1, further comprising a setting switch for selecting a mode for registering the setting password. Registering the setting password to be authenticated when the parking is released; Putting the de-parking system into the sleep mode when it enters the parking mode, and putting it into a standby state; Generating a password from the shock detection signal when an external shock detection signal is generated from an acceleration sensor; When the generated password matches the setting password, releasing the parking mode and maintaining the parking release state Unparking method comprising a. The method of claim 6, wherein registering the setting password comprises: Switching to the setting password registration mode, Detecting an external shock pattern with an acceleration sensor and generating and storing a number corresponding to the shock pattern as a setting password; Flashing the generated setting password through a light emitting device Unparking method comprising a. 8. The method for releasing parking according to claim 6 or 7, wherein if there is no shock for a predetermined time from the outside, the previous shock is reset to that which has not been detected. 7. The method for releasing parking according to claim 6, wherein the parking mode is released and maintained in the parking release state by changing the shift lever to a neutral gear and releasing the parking brake. 7. The method of claim 6, wherein the parking mode is released and the vehicle returns to the parking mode when there is a certain distance vehicle movement. The method of claim 6, wherein the parking mode is released and the vehicle returns to the parking mode after a predetermined time elapses.

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