KR102193278B1 - Automotive door lock device using On Board Diagnostics terminal - Google Patents

Abstract

The present invention relates to an auto-door lock device for a vehicle using an on board diagnostics (OBD) terminal on an OBD side previously mounted on a vehicle, which is to be used for signal input and output by being connected to the OBD terminal for a vehicle located under a driver seat of a vehicle or located on a lower end of a dashboard or a console box. The auto-door lock device for a vehicle using an OBD terminal comprises: an OBD terminal connector functioning as a communication medium for transmitting a door lock signal or an unlock signal generated from an auto-door lock module to a vehicle; and an auto-door lock module connected to an OBD terminal for a vehicle through the OBD terminal connector to perform a controller area network (CAN) communication, recognizing a smart key owned by a vehicle owner, and transmitting a door lock signal or an unlock signal to an OBD for a vehicle regardless of operation of a vehicle according to a recognition state so as to control door-side locking or unlocking to be automatically executed. The auto-door lock module includes: a key recognition unit for detecting the smart key or measuring a smart key recognition distance; a microcomputer (MCU) for controlling the door lock signal or the unlock signal transmitted to the OBD for a vehicle according to a recognition distance of the smart key detected or measured in the key recognition unit; and a CAN communication unit for supporting the CAN communication between the auto-door lock module and the OBD for a vehicle.

Description

Vehicle auto door lock device using OBD terminal {Automotive door lock device using On Board Diagnostics terminal}

The present invention relates to an auto door lock device for a vehicle, and in more detail, it is connected to an OBD (On Board Diagnostics; driving record self-diagnosis device) terminal already installed in a vehicle to provide simple use and an additional auto door lock function not found in existing vehicles. It provides, and relates to an auto door lock device using an OBD terminal that anyone can easily install and use in a vehicle without separate wiring work and damage on the vehicle side.

In general, vehicles use a smart key or press a door button provided on a vehicle-side door to lock or unlock the door.

However, in the conventional method of locking or unlocking the door of the vehicle, when the driver gets off the vehicle without locking the door of the vehicle, or when the driver moves away from the vehicle without recognizing the lock, the door of the vehicle is locked. Since the unlocked state is maintained, the vehicle itself or items inside the vehicle are not free from the risk of theft.

In addition, conventionally, during vehicle operation, after stopping while maintaining the start of the vehicle, there are also convenience stores or short distances for brief work.This is also a state in which the door side lock is not made, so the vehicle itself and the vehicle You cannot be free from fears of theft of goods.

Accordingly, in order to solve the above-described problem, in the related art, the door side of the vehicle is locked or unlocked by using a direct wiring operation.

However, the conventional method of using the wiring work was difficult for anyone to easily install and use because it had to perform the wiring work in the vehicle, and it was not compatible with the original alarm system that was already installed and used when the vehicle was shipped, so the original alarm system was used. There was a discomfort that I could not do.

In addition, in the related art, since the door is continuously unlocked and opened when the vehicle is boarded or when the vehicle is started after boarding, there are a number of risk factors, including an attack from a brute.

Republic of Korea Patent Publication No. 10-2015-0137947 Korean Patent Publication No. 10-1658053

The present invention conceived to solve the above-described problem enables simple use and additional auto door lock function not found in existing vehicles by connecting to the OBD terminal on the OBD (On Board Diagnostics) side already installed in the vehicle, and separates the vehicle side. Its purpose is to provide an auto door lock device using an OBD terminal that anyone can easily install and use in a vehicle without wiring work and damage.

The present invention recognizes a smart key for a vehicle and automatically locks or unlocks the vehicle door so that the vehicle door can be automatically closed and opened, and a brief task after stopping while the vehicle is being started is maintained while the vehicle is running. Auto door lock using an OBD terminal that can increase convenience and convenience because it allows the vehicle door to be automatically locked even when moving to a convenience store or a short distance, and automatically opens the door when the vehicle driver is holding an object. Its purpose is to provide a device.

The present invention recognizes a smart key even during vehicle boarding or starting to automatically lock the door to enhance safety, and automatically locks the door after getting off the vehicle, thereby avoiding the error of blinking and not locking the door. It is an object of the present invention to provide an auto door lock device using an OBD terminal to prevent theft of the vehicle itself or items in the vehicle.

A vehicle auto door lock device using an OBD terminal according to the present invention for achieving the above object is located under the driver's seat of the vehicle, under the dashboard or at the console box, for vehicles OBD (On Board Diagnostics; driving record self-diagnosis device). An OBD terminal connector which is connected to a terminal and used for signal input/output, and functions as a communication medium to transmit a door lock signal or a lock release signal generated from the auto door lock module to the vehicle; It is connected to the OBD terminal for a vehicle through the OBD terminal connector and is provided to communicate with the controller area network (CAN).It recognizes a smart key held by the vehicle owner and locks the door regardless of the operation of the vehicle according to the recognition state. Includes; an auto door lock module that controls to automatically execute door-side locking or unlocking by transmitting the unlock signal to the vehicle OBD, wherein the auto door lock module detects the smart key or recognizes a key for measuring a smart key recognition distance. part; A microcomputer (MCU) for controlling a door lock signal or a lock release signal transmitted to the vehicle OBD according to the recognition distance of the smart key detected or measured by the key recognition unit; And a CAN communication unit for supporting CAN communication between the auto door lock module and the vehicle OBD.

Here, the key recognition unit comprises a ferrite core and an antenna unit formed of a coil wound around the ferrite core and coated with an insulating resin to form a magnetic field; A power measurement unit for measuring received power generated by a magnetic field induced when the smart key is in proximity to the antenna unit and generating a measurement signal; A converter unit for converting the measurement signal generated by the power measurement unit into a digital signal and transmitting it to a microcomputer, wherein the microcomputer analyzes the measurement signal input from the power measurement unit of the key recognition unit to recognize the distance to the smart key. Thereafter, a lock signal or a lock release signal of the vehicle door is output according to the recognition distance, and the micom can be configured to use for switching control for locking or unlocking the door by memory for its own output signal.

Here, the key recognition unit, a signal detection unit for detecting a wireless signal for wireless communication between the smart key and the vehicle; And a spectrum analysis unit that receives the wireless signal sensed from the signal detection unit and measures the strength of the signal, wherein the micom analyzes the measurement signal input from the spectrum analysis unit of the key recognition unit to determine the distance to the smart key. After recognition, the vehicle door lock signal or unlock signal is output according to the recognition distance, and the micom can be configured to use for switching control for locking or unlocking the door by memory for its own output signal. .

Here, the micom of the auto door lock module receives data from the pre-installed vehicle OBD when transmitting a door lock signal to the vehicle through CAN communication through the vehicle OBD terminal and opens the door side window or After checking whether it is in a closed state, it is possible to control to transmit a close signal together if the window is in an open state.

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According to the present invention, it is possible to use it very simply because it is connected to the OBD terminal on the OBD (On Board Diagnostics) side already installed in the vehicle, and it is possible to provide an additional automatic door lock function that was not possible in the existing vehicle. Anyone can achieve useful effects that can be easily installed and used in a vehicle without additional wiring work and damage.

According to the present invention, the vehicle door can be automatically closed and opened by recognizing the vehicle's smart key and automatically locking or unlocking the vehicle door. The vehicle door can be automatically closed and opened while the vehicle is running. It automatically locks the vehicle door even when moving to a convenience store or a short distance for work, and it is useful to increase the convenience and convenience of use as it automatically opens (unlocks) the door when the vehicle driver is holding an object. You can achieve the effect.

According to the present invention, since the door is automatically locked by recognizing the smart key even during boarding or starting of the vehicle, it is possible to protect the driver from an attack from a bully during the initial boarding, thereby enhancing safety, and the door automatically By performing the lock, it is possible to achieve a useful effect that makes it possible to prevent the error of blinking and not locking the door, and to prevent theft of the vehicle itself or items in the vehicle.

1 is a conceptual diagram showing a vehicle auto door lock device using an OBD terminal according to an embodiment of the present invention.
2 is a block diagram showing a vehicle auto door lock device using an OBD terminal according to an embodiment of the present invention.
3 is an exemplary view showing a key recognition unit in a vehicle auto door lock device using an OBD terminal according to an embodiment of the present invention.
4 is another exemplary view showing a key recognition unit in a vehicle auto door lock device using an OBD terminal according to an embodiment of the present invention.
5 is a state diagram showing an arrangement of a noise filtering unit that may be included in the auto door lock module side in the vehicle auto door lock device using an OBD terminal according to the present bill.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings, and the present invention will be further understood through such description.

Terms and words used in the present specification and claims are not limited to the usual or dictionary meanings, and the inventor is based on the principle that the concept of terms can be appropriately defined in order to explain his or her invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention. Detailed descriptions and drawings of known functions and configurations determined to unnecessarily obscure the subject matter of the present invention are omitted.

The auto door lock device 100 using the OBD terminal according to the embodiment of the present invention is OBD (On Board Diagnostics; self-diagnosis device for driving record) (2) previously mounted on the vehicle 1 as shown in FIGS. 1 to 5. It is to enable the auto door lock function by connecting to the OBD terminal (2a) on the side of the vehicle and providing a signal. It is designed to allow anyone to easily install and use the vehicle without additional wiring work and damage on the vehicle (1) side. Suggest a device.

OBD (On Board Diagnostics) installed at the time of shipment of the vehicle 1 is a self-diagnosis device for driving records, meaning a device that automatically stores driving records when the vehicle is running, and is a legally regulated lower diagnostic monitoring device. .

The OBD (On Board Diagnostics) (2) stores the failure history in the ECU when a failure occurs in various systems installed on the vehicle side, and the vehicle status is notified to the driver through a failure indicator lamp (MIL) or an alarm on the instrument panel. I can deliver.

This OBD 2 continuously monitors the subsystems and various sensors described below or every driving cycle.

That is, the sub-system is ① function of catalyst, catalyst heater ② function of air ratio sensor ③ function of engine misfire monitoring system ④ function of EGR system ⑤ function of fuel tank ventilation system (evaporative gas system) ⑥ function of secondary air system ⑦ exhaust Includes electric circuits of gas-related parts.

In addition, the OBD (2) has an OBD terminal (2a) that is a connector so that it can be inquired through a standardized interface. The OBD terminal (2) is mostly located under the driver's seat of the vehicle, and sometimes It may be located at the bottom of the board or in the console box.

Specifically, the auto door lock device 100 using an OBD terminal according to an embodiment of the present invention includes an auto door lock module 100A and an OBD terminal connector 100B.

The auto door lock module 100A is connected to the vehicle OBD terminal 2a through the OBD terminal connector 100B, and is provided to communicate with the OBD 2 side of the vehicle and a controller area network (CAN).

The auto door lock module 100A recognizes a smart key possessed by the vehicle owner and communicates wirelessly with the vehicle 1, and transmits a door lock signal or a lock release signal regardless of the operation of the vehicle according to the recognition state. ) To the OBD (2) to automatically execute the vehicle door-side locking or unlocking, and a signal output function.

The OBD terminal connector (100B) is used for signal input/output by connecting to the OBD terminal (2a) of the vehicle OBD (On Board Diagnostics) (2) located under the driver's seat of the vehicle, under the dashboard or in the console box. As for the purpose, it functions as a communication medium to transmit a door lock signal or a lock release signal generated from the auto door lock module 100A to the vehicle 1 through the vehicle OBD (On Board Diagnostics) 2.

As shown in FIG. 2, the auto door lock module 100A is a key recognition unit 110 for detecting a smart key possessed by the vehicle owner and communicating wirelessly with the vehicle 1 through Bluetooth or the like or measuring a smart key recognition distance. ), and a micom for controlling the door lock signal or the unlock signal transmitted to the OBD 2 through the vehicle OBD terminal 2a according to the recognition distance of the smart key detected or measured by the key recognition unit 110 ( It may be configured to include a CAN communication unit 130 supporting CAN (Controller Area Network) communication between the MCU) 120 and the auto door lock module 100A and the vehicle OBD 2.

The key recognition unit 110 is of one type, and referring to FIG. 3, may include an antenna unit 111, a power measurement unit 112, and a converter unit 113.

The antenna unit 111 is formed of a ferrite core 111a and a coil 111b wound around the ferrite core 111a and coated with an insulating resin to form a magnetic field by conduction.

The power measurement unit 112 is provided to measure the received power generated by a magnetic field induced when the smart key is in proximity of the antenna unit 111 and generate a measurement signal.

The converter unit 113 is provided to convert the measurement signal generated by the power measurement unit 112 into a digital signal and input it to the microcomputer 120.

At this time, the micom 120 analyzes the measurement signal input from the power measurement unit 112 of the key recognition unit 110 to recognize the current distance to the smart key, and then locks the vehicle door according to the recognition distance. Or, it functions to output a lock release signal.

The micom 120 memorizes its own output signal and uses it for switching control for locking or unlocking the door.

In addition, the key recognition unit 110 is of another type, and referring to FIG. 4, may include a signal detection unit 114 and a spectrum analysis unit 115.

The signal detection unit 114 is for detecting a wireless signal that is wirelessly communicated between the smart key and the vehicle 1 using Bluetooth, etc., and may be referred to as a wireless reception unit that recognizes and receives a corresponding frequency such as Bluetooth.

The spectrum analysis unit 115 is provided to receive a wireless signal sensed from the signal detection unit 114 and measure the strength of the signal.

At this time, the micom 120 analyzes the measurement signal input from the spectrum analysis unit 115 of the key recognition unit 110 to recognize the distance to the current smart key, and then locks the vehicle door according to the recognition distance. It functions to output a signal or unlock signal.

The micom 120 memorizes its own output signal and uses it for switching control for locking or unlocking the door.

That is, the micom 120 measures the distance between the current smart key and the vehicle 1 through a signal input from the key recognition unit 110, and then unlocks the door if it is less than a reference value set according to the recognized distance. It automatically outputs a signal and automatically outputs a door-side locking signal when it exceeds the set threshold.

Through this, in the present invention, the vehicle owner automatically locks or unlocks the door regardless of whether the vehicle 1 side is started by analyzing the distance through detection or recognition of the smart key held by the vehicle owner. It can provide advantages that can improve the convenience and convenience of use, such as improving the inconvenience in use.

In addition, the auto door lock module 100A transmits a door lock signal to the vehicle 1 through CAN communication through the vehicle OBD terminal 2a to the microcomputer 120, from the pre-installed vehicle OBD 2 After receiving the data according to the driving record, checking whether the window on the door is in open or closed state, and if the window is open, it performs a control function that transmits a close signal together. I can.

That is, through this, the automatic performance of enhancing the safety of the vehicle-side door as well as the window may be exhibited, thereby providing an advantage of preventing theft of the vehicle itself or internal items.

The CAN communication unit 130 is based on a 7-layer model of ISO OSI (Open System Interconnection), and includes a CAN controller and a CAN protocol.

The CAN controller executes the CAN protocol while managing communication messages (data), and the CAN protocol may be composed of a data link layer and a physical layer, which are the lowest two layers among the 7 layer models of ISO OSI (Open System Interconnection). .

Here, the physical layer may represent an electrical level, a signal structure, a cable impedance, a maximum transmission rate, and the like.

Here, the CAN protocol is classified into two CAN bus lines into a recessive level and a dominant level, and when all nodes are connected to the CAN bus at a recessive level, the transmission medium displays a logical "1" state. And vice versa, the dominant state represents a logic "0", and each node can be configured to transmit a communication message when the CAN bus is in the recessive state.

Meanwhile, the auto door lock module 100A is interposed between the key recognition unit 110 and the microcomputer 120 or between the microcomputer 120 and the CAN communication unit 130 as shown in FIG. 5. Thus, it is possible to have a configuration further including a noise filtering unit 140 for improving the accuracy of the signal by filtering the noise included in the signal.

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On the other hand, the auto door lock module 100A has a main body (not shown) formed by injection molding of synthetic resin to form the exterior of the product, and the key recognition unit 110 and the microcomputer having the above-described configuration inside the main body ( 120) and the CAN communication unit 130 are mounted on or connected to the PCB, and a connector (not shown) for connecting and connecting to the OBD terminal connector 100B is mounted and provided on the PCB.

At this time, the main body forming the exterior of the auto door lock module 100A may be injection-molded in various shapes, and for durability that is not easily damaged, a synthetic resin material having at least one selected from ABS resin, silicone resin, or polycarbonate resin It may be configured to consist of a mixed composition including 5 to 20 parts by weight of an additive in which boron nitride powder and zirconia powder are mixed with respect to 100 parts by weight, and 10 to 50 parts by weight of a curing agent.

In addition, a melamine resin and an inorganic flame retardant may be further added to secure flame retardancy that does not burn easily, and 10 to 30 parts by weight of a melamine resin and 1 to 10 parts by weight of an inorganic flame retardant may be mixed based on 100 parts by weight of the synthetic resin material.

In the above additives, boron nitride powder: zirconia powder = 0.5 to 1: may be mixed and used in a weight ratio of 1 to 1.5, and heat resistance, electrical insulation, and strength may be reinforced.

The curing agent is hexahydro acid anhydride (HHPA), methylnadic acid anhydride (NMP), pyromellitic anhydride (PMDA), Lewis acid complex, metaphenyllinediamine (MDP), diaminophenylmethane (DDM), diaminodi At least one or more selected from phenyl sulfone (DDS) may be used.

The inorganic flame retardant may be at least one selected from bentonite, borate, ammonium phosphate, sodium bicarbonate, potassium bicarbonate, zinc borate, and guanidine salt.

In addition, the auto door lock module 100A is equipped with an ON/OFF switch so as to select the use or stop of use of the auto door lock device 100, and a USB connection port may be provided to enable USB use.

Accordingly, through the present invention, it can be used very simply because it is connected to the OBD terminal on the OBD (On Board Diagnostics) side already installed in the vehicle, and anyone can easily install it on the vehicle without any additional wiring work or damage on the vehicle side. It can be used, and it can provide the advantage of exhibiting an additional automatic door lock function that was not possible in existing vehicles.

In addition, in the present invention, ease of use and convenience can be improved, such as improving the inconvenience when using a vehicle in the past, and since the noise on the output signal side is filtered and removed, the accuracy and reliability of the signal can be improved. It can provide the advantage of providing the product.

The above-described embodiment is merely a description of a preferred embodiment of the present invention, and is not limited to this embodiment, and various modifications and variations are made by those skilled in the art within the spirit and scope of the present invention. It will be said that this can be achieved, and it will be said to fall within the technical scope of the present invention.

1: Vehicle 2: OBD
2a: OBD terminal 100: automatic door lock device
100A: Auto door lock module 100B: OBD terminal connector
110: key recognition unit 120: micom
130: Can Communication Department

Claims (5)

A door generated from the auto door lock module by connecting to and connecting to the vehicle OBD (On Board Diagnostics; driving record self-diagnostic device) terminal located under the driver's seat of the vehicle or located at the bottom of the dashboard or in the console box. An OBD terminal connector that functions as a communication medium to transmit a lock signal or a lock release signal to the vehicle;
It is connected to the OBD terminal for a vehicle through the OBD terminal connector and is provided to communicate with the controller area network (CAN).It recognizes a smart key held by the vehicle owner and locks the door regardless of the operation of the vehicle according to the recognition state. An auto door lock module for controlling the door-side locking or unlocking to be automatically executed by transmitting the unlocking signal to the vehicle OBD; Including,
The auto door lock module includes a key recognition unit for detecting the smart key or measuring the smart key recognition distance, and a door lock signal or lock transmitted to the vehicle OBD according to the recognition distance of the smart key detected or measured from the key recognition unit. A microcomputer (MCU) for controlling a release signal, and a CAN communication unit supporting CAN communication between the auto door lock module and the vehicle OBD,
When the microcomputer of the auto door lock module transmits a door lock signal to the vehicle through CAN communication through the vehicle OBD terminal, it receives data from the already installed vehicle OBD and opens or closes the door side window. After checking whether the window is in an open state, it is controlled to transmit a close signal together to prevent the theft of the vehicle itself or internal items by exerting an automatic performance that enhances the safety of the vehicle side door as well as the window. To be able to
The auto door lock module is provided with a key recognition unit, a microcomputer, and a can communication unit mounted on or connected to the PCB inside the main body that forms the exterior of the product, and the connector for connecting and connecting with the OBD terminal connector is mounted on the PCB. Is provided,
The main body of the auto door lock module is an additive in which boron nitride powder and zirconia powder are mixed with respect to 100 parts by weight of a synthetic resin material having at least one selected from ABS resin, silicone resin, or polycarbonate resin for durability that is not easily damaged. It is injection-molded with a mixed composition containing 20 parts by weight and 10 to 50 parts by weight of a curing agent,
The additive boron nitride powder: zirconia powder = 0.5 to 1: 1 to 1.5 by mixing in a weight ratio of 1 to 1.5 to reinforce heat resistance, electrical insulation and strength of the body
The auto door lock module is equipped with an ON/OFF switch so as to select the use or stop of use of the auto door lock device, and a USB connection port is provided to enable USB use. . The method of claim 1,
The key recognition unit,
An antenna unit comprising a ferrite core and a coil wound around the ferrite core and coated with an insulating resin to form a magnetic field;
A power measurement unit that measures the received power generated by a magnetic field induced when the smart key is in proximity of the antenna unit and generates a measurement signal;
A converter unit converting the measurement signal generated by the power measurement unit into a digital signal and transmitting it to a microcomputer; Including,
The micom analyzes the measurement signal input from the power measurement unit of the key recognition unit to recognize the distance to the smart key, and then outputs a lock signal or unlock signal of the vehicle door according to the recognized distance,
The microcomputer is an auto door lock device for a vehicle using an OBD terminal, characterized in that the micom memorizes its own output signal and uses it for switching control for locking or unlocking the door. The method of claim 1,
The key recognition unit,
A signal detection unit for detecting a wireless signal for wireless communication between the smart key and the vehicle;
A spectrum analysis unit configured to receive a radio signal sensed from the signal detection unit and measure the strength of the signal; Including,
The micom analyzes the measurement signal input from the spectrum analysis unit of the key recognition unit to recognize the distance to the smart key, and then outputs a lock signal or unlock signal of the vehicle door according to the recognized distance,
The microcomputer is an auto door lock device for a vehicle using an OBD terminal, characterized in that the micom memorizes its own output signal and uses it for switching control for locking or unlocking the door. delete delete

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