RU2782043C1 - Car door handle with built-in sensor for arming and disarming and security implementation system - Google Patents

Abstract

FIELD: automotive industry.

SUBSTANCE: group of inventions relates to a car security system and a car door handle for a security system. The car’s security system includes: an antenna amplifier installed in the car, an engine start and stop button, a key with a transmitter, door locks, an interior data bus, a rear window antenna, a luggage compartment antenna, a central console antenna, an on-board electronics control unit at the rear, door handles connected via antennas to the Keyless GO system control unit and the control of the electronic ignition switch. The electronic ignition switch control unit is a central interface and an access authorization system for the car. The Keyless GO system control unit and the electronic ignition lock control unit are equipped with software that provides arming/disarming the car, as well as the implementation of the function of unlocking/locking the car by touching a certain area of the door handle.

EFFECT: expansion of the arsenal of means for the car is achieved.

2 cl, 6 dwg

Description

The device belongs to the automotive industry, namely to devices for keyless entry, and can be used to remove / set the car alarm, open / close car doors.

Known for the design of the outer door handle for a car, including an electric door closing device, which is located in the door of the vehicle and contains a lock cylinder; a door handle that includes a fixed grip handle and a lid, wherein the lid is designed such that it at least partially covers the grip handle and the lock cylinder and releases at least the lock cylinder in the event of an emergency unlocking of the vehicle door, and an emergency unlocking device with traction means, which is designed to actuate the emergency opening mechanism and to provide emergency unlocking of the vehicle door, characterized in that the cover is made in the form of a front panel of the handle, which is installed with the possibility of rotation relative to the grip handle and is fixed on the grip handle in the closed position, and in the emergency release position is separated from the gripping handle and can be rotated relative to it, while the front panel of the handle is designed in such a way that by pulling the front panel of the handle, the traction means is driven for mechanical actuation e. an emergency opening mechanism for a vehicle door, the emergency release device comprising a deflecting means which is connected to the pulling means and is configured and located in such a way that it cooperates with the handle faceplate in such a way that it actuates the pulling means when the faceplate is pulled. handles [Patent RU. No. 2710798, IPC E05V 77/10, 01/14/2020].

The disadvantages are the use of a button or touch field on the inside of the handle to unlock the car, which increases the chances of failure of the entire system due to a mechanical failure of the button.

Known car door handle with a sensor that interacts with the security system of the car.

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The disadvantage of this design is that the system of keyless entry into the car, proposed above, is part of the security complex of the car, not installed at the factories of all known car brands. This system will fully function only when the entire security complex is fully connected to the car, and any introduction into the regular security system using third-party control units and components, to some extent, makes the security system as a whole vulnerable.

And the second drawback of this system is the impossibility of introducing it into a Mercedes-Benz G class car at the software level. The car will not receive signals from third-party control units, and therefore, the entire security system as a whole will not work on this car.

Known intelligent system KEYLESS GO [See. Smart car access system Keyless Go and Keyless Entry | HELLA], which includes an antenna range amplifier, antennas on the rear window, in the luggage compartment, rear left and right doors, center console, electronic key transmitter, four door handles, their locks and control units, system control unit, electronic ignition lock, onboard rear electronics, as well as a tailgate/tailgate lock and interior data bus.

The disadvantage of this system is the impossibility of programming the vehicle control units for the full operation of the system using standard methods and programs.

The task is to implement on a Mercedes-Benz G class car the function of unlocking and locking the car from touching certain areas of the door handle, as well as removing and setting the car on an alarm system (standard security system).

The technical result is the expansion of the arsenal of tools for a Mercedes-Benz G class car, namely a keyless access system to a car with a built-in sensor for arming and disarming and a security implementation system.

The Mercedes-Benz G class car has very complex protection systems and algorithms for the operation of the security system and can only interact with similar control units and sensors that are used in other Mercedes-Benz G class cars. To implement the task and the technical result, a car door handle with a built-in sensor for arming and disarming the car and a security implementation system are used, which includes installed software that implements the interaction of the internal units of the system with car door handles and interacts with installed regular programs through the KYELESS control unit GO (standard car keyless entry system), thereby ensuring the operation of the entire security system for a Mercedes-Benz G class car.

The software is loaded into the electronic ignition lock control unit and the KYELESS GO control unit through the adapter and the diagnostic socket of the car, ensuring their communication with the door handles through the door handle antennas and their units, by distributing signals between them.

The technical result is achieved by the fact that a cavity is made in the body of the handle to locate the volume sensor inside this cavity. Also, in the body of the handle there is an additional channel for laying wires from the volume sensor inside the door cavity. The cavity is closed with a lid. Volume sensors are placed in the cavity.

The handle includes a door handle body, a door handle body cover, a sensor built into the door handle body.

The security system includes an antenna amplifier, an engine start and stop button, a key with a transmitter, door handles with control units, door locks, an interior data bus, antennas installed in the car, as well as a Keyless GO system control unit and an electronic ignition lock control unit. The electronic ignition lock control unit is the central interface and vehicle access authorization system.

The Keyless GO system control unit is designed to interact with car handles and arm the car and disarm it, as well as implement, using sensors built into the car door handle, the unlocking function and the car locking function by touching a certain area of the door handle.

On FIG. 1 shows a general view of the handle in a disassembled state.

On FIG. 2 shows the handle in section

On FIG. 3 shows the cover of the handle body.

On FIG. 4 shows a volume sensor placed in the cavity of the door handle.

On FIG. 5 shows a diagram of the security system.

On FIG. 6 shows the layout of the antennas on the car for the rear left and right doors, the center console, the tailgate and the luggage compartment antenna.

The security system includes antenna amplifier A10, rear window antenna A11, luggage compartment antenna A17, rear left door antenna A18, rear right door antenna A19, center console antenna A20, tailgate antenna A21, engine start/stop button A22, key A16 with transmitter, door handle A15/1 front left, door handle A15/2 front right, door handle A15/3 rear left, door handle A15/4 rear right, tailgate handle A15/5, control unit A2 front door left , front right door control unit A4, left rear door control unit A8, rear right door control unit A12, Keyless GO control unit A14, electronic ignition lock control unit A1, onboard electronics (SAM) control unit A6 rear, front door lock A3 left, front door lock A5 right, rear door lock A9 left, rear door lock A13 right, tailgate/tailgate lock A7, passenger compartment data bus (CAN B). The central interface control unit is part of the A1 electronic ignition lock control unit.

The central interface and vehicle access authorization system is the electronic ignition lock control unit A1. With the help of hardware and software, a change is made to the A14 control unit for the Keyless GO system (the standard keyless entry system of the car) and new software is installed in the A1 electronic ignition lock control unit.

This software allows the interaction of the control unit A14 with the Keyless GO system (standard system) and the control unit A1 with an electronic ignition lock with car door handles through their antennas and control units. This ensures the full interaction of all elements of the system as a whole.

After installing the software, a general reset is performed and all vehicle systems are ready to work with this system. At the same time, the initial software settings are performed in the A14 KEYLESS GO control unit, specifying the number of installed handles with internal sensors and the parameters for receiving radio signals. After all system settings are completed, the keyless entry system works in full.

The system includes the following subfunctions:

- engine starting;

- stop the engine;

- functional process of determining the location of the key A16 with the transmitter.

The A14 KEYLESS GO control unit initiates an A16 key authorization request with the transmitter under the following conditions:

- when closing the last door;

- while starting the vehicle (v>0 km/h), if the door or trunk lid is not closed.

The A14 KEYLESS GO control unit sends coded requests to the A16 key with transmitter via the A20 antenna in the center console and the A17 antenna in the boot. Key A16 with the transmitter decodes these requests and sends an appropriately encoded response. The A14 KEYLESS GO control unit receives the responses from the key A16 with transmitter via the aerial A18 in the rear left door and the aerial amplifier A10, checks their plausibility and sends them via the interior data bus to the electronic ignition lock control unit A1. If the result of the analysis is positive, the control unit A1 of the electronic ignition lock authorizes the key A16 with the transmitter. If the vehicle stops and the doors remain closed, the location process will not be repeated.

Starting the engine is carried out as follows.

When the engine start/stop button A22 is pressed, a request to start the engine is sent. The electronic ignition lock control unit A1 registers this request and sends a status message "Engine start/stop button pressed" to the electronic ignition lock control unit A1 via the passenger compartment data bus. The electronic ignition lock control unit A1 analyzes this status and transmits activation and location signals from all antennas to the key A16 with a transmitter. The key A16 with transmitter sends the engine start authorization code and its position to the control unit A1 via the aerial A17 in the luggage compartment and the aerial amplifier A10. The electronic ignition lock control unit A1 sends this data via the passenger compartment data bus to the electronic ignition lock control unit A1. The electronic ignition lock control unit A1 checks the engine start authorization code. If it is determined to be valid, the electronic ignition lock control unit A1 sends an engine start permission message.

Stopping the engine is carried out as follows.

Pressing the engine start/stop button A22 while the engine is running sends a request to stop the engine. The electronic ignition lock control unit A1 detects the pressing of the engine start/stop button A22 and sends a status message "Engine start/stop button pressed" via the passenger compartment data bus to the electronic ignition lock control unit A1. The electronic ignition lock control unit A1 analyzes it and sends a "stop engine" request via the passenger compartment data bus.

The A21 antenna on the tailgate allows you to determine the position of the A16 key directly next to the tailgate and makes it possible to use the convenient unlocking / locking function of the door through the handle of our production, installed instead of the original one on the tailgate.

Additional conditions for blocking/unblocking operation

Key 16 with transmitter is outside the vehicle (maximum distance from control element 1 m).

The lock/unlock function allows the vehicle to be opened and locked using the central locking system.

To lock / unlock the car use:

Outer handle A15/1 of the KEYLESS-GO door, front left

Outer handle A15/2 doors KEYLESS-GO, front right

Outside handle A15/3 of the KEYLESS-GO door, rear left

Exterior door handle А15/4 KEYLESS-GO, rear right

The function of locking and unlocking the car is implemented according to the following algorithm:

General unlocking occurs if you touch any of the door handles A15/1, A15/2, A15/3, A15/4 from the inside of the handle.

Unlock Options

Touch any door handle or pull any door handle.

To block the car, touch the outer side of one of the outer handles A15/1, A15/2, A15/3, A15/4.

Example of a full unlock on the left front door:

The capacitive sensor (recessed touch surface) of the door handle detects touches on the A15/1 front left door handle. The A14 KEYLESS GO control unit reads the capacitive sensor signal and sends an activation signal to the A16 key with transmitter via the A18 antenna in the rear left door.

The A16 key with transmitter transmits the authorized access code and its location to the A14 KEYLESS GO control unit via the rear window aerial A11 and the aerial amplifier A10. The A14 KEYLESS GO control unit sends this data via the interior data bus to the A1 electronic ignition lock control unit. The electronic ignition lock control unit A1 checks the access authorization code of the A16 key with the transmitter. If it is determined to be valid, the electronic ignition lock control unit A1 sends an "Unlock doors" request via the passenger compartment data bus to the following control units:

- control unit A6 on-board electronics (SAM) at the rear;

- control unit A2 of the front door on the left;

- control unit A4 of the front right door;

- A8 rear door control unit on the left;

- A12 rear right door control unit.

The control unit A2 for the left front door releases the lock A3 for the front left door via the corresponding central locking motor. The control unit A4 for the right front door releases the lock A5 for the front right door via the corresponding central locking motor.

The rear left door control unit A8 unlocks the lock A9 of the rear left door using the central locking motor for the rear left door.

The control unit A12 for the right rear door releases the lock of this door using the electric motor of the central locking system for the right rear door.

Claims (2)

1. Car security system, including an antenna amplifier installed in the car, an engine start and stop button, a key with a transmitter, door locks, a passenger compartment data bus, a rear window antenna, a luggage compartment antenna, a center console antenna, a rear on-board electronics control unit, door handles , connected via antennas with the Keyless GO system control unit and the electronic ignition lock control unit, which is a central interface and a car access authorization system, moreover, software is installed in the Keyless GO system control unit and the electronic ignition lock control unit, which ensures the arming / disarming of the car arming, as well as the implementation of the function of unlocking / locking the car by touching a certain area of the door handle. 2. The car door handle for the security system according to claim 1, including a housing, a housing cover, a control unit, an antenna and a volume sensor built into the door handle housing, in which an additional channel is made for wires from the volume sensor into the cavity of the car door.

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