CN202413703U

CN202413703U - RFID (radio frequency identification device) based key-free automobile accessing and starting system

Info

Publication number: CN202413703U
Application number: CN2011205124708U
Authority: CN
Inventors: 朱祝阳; 丁武俊; 张方伟; 陈文强; 潘之杰; 赵福全
Original assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Geely Automobile Research Institute Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Geely Automobile Research Institute Co Ltd
Priority date: 2011-12-09
Filing date: 2011-12-09
Publication date: 2012-09-05
Anticipated expiration: 2021-12-09

Abstract

The utility model discloses an RFID (radio frequency identification device) based key-free automobile accessing and starting system, which comprises an identification controller and an RFID unit. The identification controller comprises a radio frequency emission module, a communication module, a signal processing module and an RFID identification module, wherein the signal processing module is connected with the communication module, and the RFID identification module is connected with the signal processing module and the communication module. By the aid of the RFID technology, a cellphone with an RFID-SIM (subscriber identification module) card is used as a wireless key of an automobile, so that users can access and start the automobile without the key and are free of a series of troubles of taking the key. Meanwhile, interference resistance of radio frequency signals is high, and reliability and safety of the system can be guaranteed.

Description

A kind of automobile based on RFID does not have key and gets into start-up system

Technical field

The utility model belongs to automobile starting control technology field, and being specifically related to a kind of automobile based on RFID (RadioFrequency Identification, RF identification) does not have key entering start-up system.

Background technology

Automobile remote-control device in the market has only the function of teleswitching door lock, can't realize safe no key entering and not have key starting.

Chaufeur to get into vehicle, start the engine and extinguish driving engine, leave vehicle, automobile is set up defences; Generally need the following steps process: open door lock by the unlock key of remote controller earlier; Get into vehicle then, plug key, slam brake pedal; Key is got to the ON gear, starts the driving engine of vehicle; When leaving vehicle, key is got to the OFF gear, extinguishes driving engine, leave vehicle after, the key of setting up defences by remote controller makes the vehicle locking.

Therefore, existing based on remote operated automobile entering start-up technique, the start-up course of its driving engine still relies on the key rotation and starts; The process of its remote controlled unlocking needs button to realize, so degree of automation is not high simultaneously.On the other hand, the remote signal poor anti jamming capability is subject to the influence of environment and other factors, so make the reliability of prior art and safety be restricted.

Along with development of science and technology, RFID technology utilization at home and abroad is extensive, and RFID is a kind of contactless automatic identification technology.It is through the specific target of radio signals identification, and the relevant data of read-write, and does not need recognition system and this target to have machinery or optics to contact.It need not manual intervention, can be used for various harsies environment, can discern swiftly passing object, can discern a plurality of labels simultaneously, and is swift and convenient to operate.The second generation cermet of identification of China, all built-in RFID chip of Olympic Games admission ticket; ETC electronic-parking Fare Collection System on the express highway has also used the RFID technology; The mobile-phone payment business of China Mobile is to bind with user's SIM cards of mobile phones, and the user only need change the SIM that is integrated with RFID, just can use the mobile e-business service based on non-contact technology.

Summary of the invention

To the above-mentioned technological deficiency of existing in prior technology, the utility model provides a kind of automobile based on RFID not have key and has got into start-up system, and can realize not having the key entering and start automobile, and safe.

A kind of automobile based on RFID does not have key and gets into start-up system, comprising: identification controller;

The RFID unit receives the radio frequency request signal that identification controller is launched, and contains the radio frequency return signal of label information to the identification controller retroeflection;

Described identification controller comprises:

Radiofrequency emitting module is used to launch described radio frequency request signal;

Communication module is used to receive and transmit the on-off signal of described radio frequency return signal, engine start switch and the clutch signal of brake pedal;

The RFID identification module; Be used for the radio frequency return signal of received communication module forwards and the label information in this signal is discerned; Export the release actuation signal according to recognition result, and send described release actuation signal to car body controller, engine controller, handle lock controller and stroke read-out through communication module;

Signal processing module is used for on-off signal and clutch signal according to described release actuation signal and communication module forwarding, sends Engine Start Signal through communication module to the engine starting motor.

Described signal processing module is MCU (microprocessor unit).

In the optimized technical scheme, described communication module communicates through CAN (Controller Area Network, controller local area network) bus and car body controller, engine controller, handle lock controller and stroke read-out; Signaling rate is fast, and is real-time.

In the optimized technical scheme, described RFID unit is the mobile phone that the RFID-SIM card is installed; The RFID chipset is formed in SIM (the Subscriber Identity Module) card of mobile phone, makes things convenient for the user to carry.

The utility model adopts the RFID technology, will have the wireless key of the mobile phone of RFID-SIM card as automobile, realizes that no key just can get into automobile and can start automobile, makes the user needn't be with key again, also needn't be entangled with a series of troubles that key brings again; The radiofrequency signal antijamming capability is strong simultaneously, can guarantee the reliability and the safety of system.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the running condition scheme drawing of the utility model.

Fig. 3 is the execution schematic flow sheet of identification controller.

The specific embodiment

In order to describe the utility model more particularly, be elaborated below in conjunction with accompanying drawing and the specific embodiment technical scheme and relative theory thereof to the utility model.

As illustrated in fig. 1 and 2, a kind of automobile monitoring system based on wheel steering identification comprises: identification controller and mobile phone.

Mobile phone is carried by the user, the RFID-SIM card of RFID chip that has been integrated of the SIM in this mobile phone, and the radio frequency request signal of RFID-SIM card receiver identification controller emission, and contain the radio frequency return signal of label information to the identification controller retroeflection.

Identification controller comprises: communication module, radiofrequency emitting module, RFID identification module and MCU.

Radiofrequency emitting module every at a distance from 10 seconds will to around launch the radio frequency request signal, in visual range, mobile phone will receive this radio frequency request signal as if the distance of carrying user with RFID-SIM card mobile phone and car; In the present embodiment, radiofrequency emitting module is homemade TX5-315M family chip.

Communication module links to each other with brake pedal with engine start switch, and receives on-off signal and clutch signal that both provide respectively; Simultaneously, communication module is the radio frequency return signal of wireless receiving RFID-SIM card mobile phone retroeflection also, and this radio frequency return signal is transmitted to the RFID identification module; Wherein, on-off signal and clutch signal are differential signal, and communication module offers MCU after can converting these signals into digital signal; In the present embodiment, communication module is the X20IOIF chip of import brand Bei Jialai.

The RFID identification module links to each other with MCU with communication module; Its received RF return signal also carries out feature identification to the label information in the signal; When the lane database of RFID identification module truly has the information (representing in this automobile-used family visual range at this car) that is complementary with label information; Then the RFID identification module sends the release actuation signal through communication module and CAN bus to car body controller, engine controller, handle lock controller and stroke read-out simultaneously to MCU output release actuation signal.

Car body controller is if receive the release actuation signal, and Door Handle is pulled simultaneously, and then car body controller can remove to control door-lock motor, with the door lock release, so that the user can draw back car door;

The handle lock controller then can remove to control the handle lock motor if receive the release actuation signal, with the bearing circle release, so that the user can driver behavior;

Engine controller is if receive the release actuation signal, then can remove the forbidding of Oil pump electrical machinery oil spout work, so that driving engine is in case start, Oil pump electrical machinery can provide oil spout;

The stroke read-out then can be removed the demonstration of forbidding to screen, so that some vehicle condition information show if receive the release actuation signal on screen.

MCU links to each other with the RFID identification module with communication module, the release actuation signal of the on-off signal of its received communication module forwards and clutch signal and the output of RFID identification module; MCU sends Engine Start Signal through communication module to the engine starting motor according to on-off signal, clutch signal and release actuation signal; Wherein, MCU is a digital signal to the Engine Start Signal that communication module transmits, and communication module can convert this signal into differential signal and send to the engine starting motor.In the present embodiment, MCU adopts the STM32F103 series of products of ST company.

When the cooresponding digital quantity of on-off signal is 1 (being that the engine start switch button is pressed); The cooresponding digital quantity of clutch signal is 1 (being that brake pedal is operated); MCU receives the release actuation signal of RFID identification module output simultaneously; Then MCU sends Engine Start Signal to engine starting motor, makes engine starting motor-driven engine starting.

The control flow of the identification controller of this embodiment is as shown in Figure 3; Whether identification controller at first regularly has the mobile phone that the RFID-SIM card is installed in the outer certain zone of inspection vehicle, and it whenever launched the radio frequency request signal at a distance from 10 seconds around car, if receive the radio frequency return signal of RFID-SIM card retroeflection; Then judge in the radio frequency return signal label information whether with the information matches of identification controller typing in advance; If coupling, then identification controller will send the release actuation signal on the CAN bus, and the car body controller of automobile is received the release actuation signal through the CAN bus interface; Then it can make the car door release, so that the user can draw back car door through grip handle.

When the user draw back car door into the car after, whether identification controller regularly has the mobile phone that the RFID-SIM card is installed in the inspection vehicle once more, its every radio frequency request signal of in car, launching at a distance from 10 seconds; If receive the radio frequency return signal of RFID-SIM card retroeflection, then judge in the radio frequency return signal label information whether with the information matches of identification controller typing in advance, if coupling; Judge then whether the engine start switch button is pressed, if judge further then whether brake pedal is operated; If; Then send Engine Start Signal to the engine starting motor, make its running drive automobile engine starting, then starter motor is closed in timing behind engine starting.

Claims

1. the automobile based on RFID does not have key entering start-up system, it is characterized in that, comprising:

Identification controller;

Described identification controller comprises:

Radiofrequency emitting module is launched described radio frequency request signal;

Communication module receives and transmits the on-off signal of described radio frequency return signal, engine start switch and the clutch signal of brake pedal;

The RFID identification module, the radio frequency return signal of received communication module forwards, and output release actuation signal;

Signal processing module receives on-off signal and clutch signal that described release actuation signal and communication module are transmitted, and through communication module output Engine Start Signal.

2. the automobile based on RFID according to claim 1 does not have key and gets into start-up system, and it is characterized in that: described RFID unit is the mobile phone that the RFID-SIM card is installed.

3. the automobile based on RFID according to claim 1 and 2 does not have key and gets into start-up system, and it is characterized in that: described signal processing module is MCU.

4. the automobile based on RFID according to claim 1 and 2 does not have key and gets into start-up system, it is characterized in that: described communication module receives on-off signal and clutch signal or sends Engine Start Signal through the CAN bus.