CN202783102U - Intelligent entry system for automobile - Google Patents

Abstract

The utility model relates to an intelligent entry system for an automobile, which comprises an intelligent key, an intelligent entry transceiver arranged in the automobile, a request switch connected with the intelligent entry transceiver, an ignition rotating switch, and an intelligent entry ECU (electronic control unit). The intelligent entry ECU is connected with the intelligent entry transceiver, the request switch and the ignition rotating switch respectively, and with an automobile EMS (engine management system) by a CAN (controller area network) bus. According to the intelligent entry system, the intelligent entry transceiver is triggered by the request switch to search the intelligent key, and opening and closing of an automobile door are controlled after legal information of the intelligent key is verified. Knob type ignition is conducted through the ignition rotating switch; after the communication between the intelligent entry ECU and the automobile EMS is verified, the rotating switch is rotated to ON from ACC, and intelligent start-up is accomplished. Intelligent entry system is convenient, practical and low in cost.

Description

Intelligent car entry system

technical field

The utility model relates to an automobile intelligent entry system.

Background technique

At present, there are generally three ways to open the car door and enter the car:

The first is through the mechanical key, the user uses the mechanical key that comes with the car to unlock the car door lock to open the car door. This method is low in cost, but poor in safety, and the user's operation is also complicated.

The second is through Remote Keyless Entry (RKE for short). The user uses the remote key that comes with the car to send a password signal to the lock control circuit. After the vehicle antenna receives the password signal, it uses the distributor to enter the receiver ECU. The high-frequency amplification processing unit performs amplification and compares it with the standard code in the memory, and if the code is correct, the unlocking operation is performed. Although the cost of this method is low, the user still needs to hold the key in his hand when entering the car, which is not truly "keyless". Moreover, this method of remotely opening the door is prone to co-frequency interference, causing the vehicle to be blocked. steal.

The third is through the keyless smart entry (Passive Entry&Passive Start referred to as PEPS), the user will carry the smart key that comes with the car, close to the door, without taking the key out, and press the opening request switch on the door handle to open the door. Unlocking, truly realizing "keyless" entry. This type of smart entry system is usually a one-button start (Start Stop Engine System). Press the Engine Start button located near the central panel of the instrument panel to start the engine. The cost of entering the system for PEPS is high.

Contents of the invention

The purpose of the utility model is to overcome the disadvantages of the above-mentioned prior art and provide an intelligent entry system for automobiles. On the basis of realizing intelligent entry and intelligent start, the system starts the automobile through the ignition of the knob, which is not only convenient to operate, but also low in cost.

The technical solution adopted to realize the purpose of this utility model is: a kind of automobile intelligent entry system, comprising:

smart key;

Smart entry transceivers installed in cars;

a request switch connected to said smart entry transceiver;

ignition rotary switch; and

The smart entry ECU (Electronic Control Unit, electronic control unit) is connected with the smart entry transceiver, the request switch and the ignition rotary switch respectively, and the smart entry ECU communicates with the automobile EMS (Engine Management System, engine management system) through the CAN bus )connect.

Further, the intelligent entry ECU is connected with the automobile BCM (BodyControl Module, body controller) through the CAN bus.

Further, the car intelligent entry system also includes:

The first buzzer is located on the driving side of the car and is connected to the smart entry ECU; and

The second buzzer is arranged in the dashboard of the car and connected with the smart entry ECU.

In the above technical solution, there are six intelligent entry transceivers, which are respectively arranged on the left front door, the right front door, the instrument panel, the auxiliary instrument panel, the trunk and the rear bumper.

In the above technical solution, there are three request switches, which are respectively arranged on the switch handle of the left front door of the vehicle, the switch handle of the right front door of the vehicle and the rear part of the trunk.

The utility model wakes up the intelligent entry system through the request switch to start authentication. After the intelligent entry transceiver finds the intelligent key, the legal information of the intelligent key is transmitted from the intelligent entry ECU to the automobile BCM, and the automobile BCM controls the door lock of the automobile door. The utility model performs knob-type ignition through the ignition rotary switch, and after the intelligent access ECU and the automobile EMS communication verification, the rotary switch rotates from the ACC gear to the ON gear to complete the startup.

The utility model adopts RFID technology and code-hopping technology, and transmits encrypted code-hopping data through RFID radio waves between the smart key and the smart entry transceiver, and performs two-way communication to verify the legitimacy of the key and the host, thereby realizing the need not to take the key Out of the pocket, unlocks and closes the door locks within an effective distance, and allows the car to start. The utility model avoids the problem that the PKE system is susceptible to co-frequency interference. In addition, the use of the knob-type ignition method reduces the cost of the smart entry system, which is suitable for models that have high requirements for configuration but also high requirements for cost control, and has strong practicability.

Description of drawings

Fig. 1 is a structural block diagram of the vehicle intelligent entry system of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

As shown in Figure 1, the car smart entry system includes: smart key, smart entry transceiver, request switch and ignition rotary switch.

This embodiment includes the first, second, third, fourth, fifth and sixth total of six RFID intelligent entry transceivers, which are respectively located on the left front door, right front door, instrument panel, auxiliary instrument panel, luggage and the first, second and third request switches in total, which are respectively located in the left front door switch handle of the car, the right front door switch handle of the car and the trunk rear.

The first request switch in the switch handle of the left front door of the car is connected with the first intelligent entry transceiver; the second request switch in the switch handle of the right front door of the car is connected with the second intelligent entry transceiver; the third request switch at the rear of the trunk of the car Connect with the third smart entry transceiver.

The utility model also includes an intelligent entry ECU, which is respectively connected with six intelligent entry transceivers, three request switches and an ignition rotary switch, and the intelligent entry ECU is connected with the automobile EMS, BCM and engine ECU through the CAN bus.

In order to know the power status of the RFID smart key in time, the RFID smart key is also equipped with a voltage detection module. The voltage detection module sends the battery power signal to the smart entry ECU through the UHF signal. The smart entry ECU analyzes the UHF signal. If the smart key battery If the voltage is lower than 2.5V and the ignition knob switch is in the ON position, the smart entry ECU will send a low voltage prompt signal to the IPC through the CAN bus.

The process of intelligent entry of the utility model is described below by taking the intelligent entry into the front door of a car as an example.

Press the first request switch, the first request switch triggers the smart entry transceiver, and the smart entry transceiver sends out RFID low-frequency signals to find smart keys within a certain range, and the smart keys within the range send out 433.92MHz after receiving the low-frequency signal RFID radio frequency signal, the 433.92MHz antenna receiver in the smart entry transceiver receives the 433.92MHz RFID radio frequency signal and then recognizes it. If the identification is successful, the smart entry ECU communicates with the car BCM through the CAN bus, and controls the car door through the car BCM The car lock realizes the intelligent opening of the car door.

The intelligent opening process of the rear door and trunk of the car is the same as above, and will not be repeated here.

The utility model performs knob-type ignition through the ignition rotary switch, and after the smart access ECU communicates with the automobile EMS to verify, the rotary switch rotates from the ACC gear to the ON gear to complete the startup of the car.

In order to realize warning and alarm functions, the knob-type automobile intelligent entry system also includes: a steering anti-theft lock unit, a first buzzer arranged on the driving side of the automobile, and a second buzzer arranged in the instrument panel. The steering anti-theft lock unit, the first buzzer and the second buzzer are all connected with the intelligent entry ECU. Intelligent entry ECU controls the first buzzer and the second buzzer to complete the prompt of successful unlocking, prompt of successful locking (closing the trunk), prompt of successful locking (opening of the trunk), prompt of locking failure, prompt of trunk opening, automatic trunk Opening reminder, LOCK gear smart key search success reminder, LOCK gear smart key search failure reminder, smart key not in the car reminder (open any door), smart key not in the car reminder (close all doors), smart key low battery reminder. All the above-mentioned functions can be realized through the existing technology, which will not be repeated here.

Claims (5)

1. an automobile intelligent enters system, and the intelligence of comprise Intelligent key, being located in the automobile enters transceiver, enters the request switch that transceiver is connected with described intelligence, it is characterized in that, also comprises:

The igniting rotor switch; And

Intelligence enters ECU, enters transceiver with described intelligence respectively, the request switch is connected with the rotor switch of be connected, and described intelligence enters ECU and passes through the CAN bus and be connected with automobile EMS.

2. automobile intelligent according to claim 1 enters system, it is characterized in that: described intelligence enters ECU and is connected with automobile BCM by the CAN bus.

3. automobile intelligent according to claim 2 enters system, it is characterized in that, also comprises:

The first buzzer phone is located at the driving side of automobile, enters ECU with described intelligence and is connected; And

The second buzzer phone is located in the instrument carrier panel of automobile, enters ECU with described intelligence and is connected.

4. each described automobile intelligent enters system according to claim 1 ~ 3, it is characterized in that: it is six that described intelligence enters transceiver, is located at respectively automobile left front door, right front door, instrument carrier panel, aux. fascia panel, baggage container and rear bumper arm.

5. each described automobile intelligent enters system according to claim 1 ~ 3, it is characterized in that: the described request switch is three, is located at respectively automobile left front door switch handle, Automobile Right Qianmen switch handle and baggage container rear portion.