CN205344821U - A car keyless entry and start system - Google Patents

Abstract

The utility model discloses a car keyless entry, start-up system. The system comprises: intelligent movement equipment, on-vehicle control unit and OBD data extension line, intelligent movement equipment includes: a first NFC module for transmitting identification information, the on-board control unit comprising: and the OBD data extension line is electrically connected with an ECU (electronic control unit) in the automobile, and the other end of the OBD data extension line is electrically connected with the CAN bus conversion module. The utility model discloses integrated the intelligent Mobile device who is arranged in sending the first NFC module of identification information, replaced the intelligent key that traditional keyless entry, start-up system in for this car keyless entry, start-up system need not additionally to dispose intelligent key, have so both reduced manufacturing cost, have avoided the extra economic loss because of intelligent key's loss causes again.

Description

A car keyless entry and start system

technical field

The utility model relates to the technical field of automobile safety, in particular to a keyless entry and start system for automobiles.

Background technique

With the popularity and development of automobiles, people have higher and higher requirements for the intelligence and comfort of automobiles. In order to meet people's requirements for cars, keyless entry and start systems for cars have emerged.

Existing car keyless entry and start systems mainly include: car keyless entry system (PassiveKeylessEnter, referred to as "PKE") and car keyless start system (KeylessStartSystem), car keyless entry system uses radio frequency technology, when the driver carries When the smart key enters the set range, the car will automatically recognize the smart key and automatically open the door after confirming the identity. The car's keyless start system also uses radio frequency technology. When the driver wants to start the car, he doesn't need to take out the smart key, just press the start button in the car to start the car directly.

In the process of realizing the utility model, the inventor finds that the prior art has at least the following problems:

The cost of the smart key equipped with existing car keyless entry and start systems is high. If the driver accidentally loses it, it will cost a lot of money to replace it.

Contents of the invention

The embodiment of the utility model aims at the problem in the prior art that the smart key equipped with the keyless entry and start system of a car is expensive, and if it is lost, it will cause considerable economic loss, and proposes a keyless entry and start system for a car.

The technical scheme that the utility model proposes with regard to the problems referred to above is as follows:

The embodiment of the utility model provides a car keyless entry and start system, the system includes: an intelligent mobile device, an on-board control unit, and an on-board diagnostic system OBD data extension cable,

The smart mobile device includes: a first near-field communication NFC module for sending identification information,

The vehicle control unit includes: a second NFC module for receiving the identification information, a second micro control unit MCU, a controller area network CAN bus conversion module, and a one-key start button, the second NFC module, Both the CAN bus conversion module and the one-key start button are electrically connected to the second MCU,

One end of the OBD data extension line is electrically connected to the electronic control unit ECU inside the car, and the other end of the OBD data extension line is electrically connected to the CAN bus conversion module.

In the system described in the present invention, the smart mobile device further includes: a first MCU, a first wireless transmission module, and an input module, the first NFC module, the first wireless transmission module, and the input The modules are all electrically connected to the first MCU,

The vehicle control unit further includes: a second wireless transmission module, the second wireless transmission module is electrically connected to the second MCU, and the second wireless transmission module is wirelessly connected to the first wireless transmission module.

In the system described in the present invention, both the first wireless transmission module and the second wireless transmission module include: at least one of a wifi module and a bluetooth module.

In the system described in the present invention, the vehicle-mounted control unit further includes: a global positioning system GPS module, and the GPS module is electrically connected to the second MCU.

In the system described in the present invention, the vehicle-mounted control unit further includes: a vibration sensor module, and the vibration sensor is electrically connected to the second MCU.

In the system described in the present invention, the vehicle control unit further includes: a global mobile communication GSM module, and the GSM module is electrically connected to the second MCU.

The beneficial effects brought by the technical solution provided by the embodiment of the utility model are:

By integrating the smart mobile device with the first NFC module for sending identification information, the smart key in the traditional keyless entry and start system is replaced, so that the car keyless entry and start system does not need additional smart keys, so that both The manufacturing cost is reduced, and the additional economic loss caused by the loss of the smart key is avoided.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative efforts.

Fig. 1 is a schematic structural diagram of a keyless entry and start system for a car provided by an embodiment of the present invention;

Fig. 2 is a structural schematic diagram of a keyless entry and start system for a car provided by an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a vehicle-mounted control unit provided by an embodiment of the present invention.

detailed description

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the implementation of the present utility model will be further described in detail below in conjunction with the accompanying drawings.

The embodiment of the utility model provides a car keyless entry and start system, see Figure 1, the system includes:

Smart mobile device 1, on-board control unit 2, and on-board diagnostic system (On-Board Diagnostic, referred to as "OBD") data extension cable 3,

The smart mobile device 1 includes: a first near field communication (NearFieldCommunication, referred to as "NFC") module 11 for sending identification information,

The vehicle-mounted control unit 2 includes: a second NFC module 21 for receiving identification information around, a second microcontroller unit (MicrocontrollerUnit, referred to as "MCU") 22, a controller area network (ControllerAreaNetwork, referred to as "CAN") bus conversion module 23 , and the one-key start button 24, the second MCU22, the CAN bus conversion module 23, and the one-key start button 24 are all electrically connected with the second MCU22,

One end of the OBD data extension line 3 is electrically connected to the electronic control unit (Electronic Control Unit, referred to as "ECU") inside the car, and the other end of the OBD data extension line 3 is electrically connected to the CAN bus conversion module 23 .

In this embodiment, the ECU inside the car can be electrically connected with the window system, door lock system, engine lock system, ignition system, oil circuit system, and sound and light system in the car to realize the opening or closing of the control window , Control the opening of the car door, control the start of the car (that is, open the oil system and ignition system at the same time, and make the engine lock system not work) and other functions.

In this embodiment, when the smart mobile device 1 is close to the set range of the vehicle control unit 2 (the set range is related to NFC technology), the first NFC module 11 sends identification information to the second NFC module 21 for identity verification, After the smart mobile device 1 has passed the identity verification, the second MCU 22 in the vehicle control unit 2 will send a car door lock opening command to the ECU inside the car through the OBD data extension cable 3, and the ECU will control the door lock system to automatically open the car door to realize wireless security. Key entry function; when the smart mobile device 1 passes the identity verification and the driver presses the one-key start button 24, the one-key start button 24 sends a start signal to the second MCU22, and the second MCU22 will transmit the OBD data extension line 3 to the interior of the car. The ECU issued a car start command, and the ECU controls the car start (that is, simultaneously controls the opening of the oil circuit system and the ignition system, and controls the closing of the engine locking system), realizing the keyless start function.

In this embodiment, the existing intelligent mobile devices (such as smart phones, tablet computers, etc.) The inconvenience caused by carrying the smart key can reduce the economic loss caused by the loss of the smart key.

In practical applications, the second MCU 22 can be manufactured using a chip of the STM32F103RBT6 type. The first NFC module 11 can adopt the NFC-SIM card, and the second NFC module 21 can be arranged on the glass on the A-pillar side of the car driver's position in the car, when the smart mobile device 1 with the NFC-SIM card is inserted near the second NFC When module 21 is used, identity recognition can be carried out.

Specifically, referring to FIG. 2 , the smart mobile device 1 may further include: a first MCU 12, a first wireless transmission module 13, and an input module 14, and the first NFC module 11, the first wireless transmission module 13, and the input module 14 are all connected to The first MCU 12 is electrically connected.

The vehicle control unit 2 may further include: a second wireless transmission module 25 , the second wireless transmission module 25 is electrically connected to the second MCU 22 , and the second wireless transmission module 25 is wirelessly connected to the first wireless transmission module 13 .

In this embodiment, the smart mobile device 1 can also realize the function of the remote control vehicle control unit 2. Specifically, the driver can input an indication signal through the input module 14, and the first MCU 12 can perform the function according to a preset program (such as pre-installed APP software) ) and receive the indication signal to send corresponding instructions, then transmit the instructions to the vehicle control unit 2 through the wireless connection between the first wireless transmission module 13 and the second wireless transmission module 25, so as to realize the remote vehicle control of the intelligent mobile device 1 Function of Unit 2. Specifically, it can have the following functions: one-key anti-theft/unlock, one-key car start/stop, one-key query of the current state of the car, one-key window opening/closing, one-key opening/closing of sound and light alarm, one-key real-time query of the car Position, one button to realize engine lock system on/off and other functions.

Further, both the first wireless transmission module 13 and the second wireless transmission module 25 may include: at least one of a wifi module and a bluetooth module.

In this embodiment, wireless communication between the first wireless transmission module 13 and the second wireless transmission module 25 can be performed through one or more methods of wifi or bluetooth.

Further, referring to FIG. 3 , the vehicle control unit 2 may further include: a Global Positioning System (Global Positioning System, “GPS”) module 26 , and the GPS module 26 is electrically connected to the second MCU 22 .

In this embodiment, the vehicle-mounted control unit 2 integrates a GPS module 26, which enables the smart mobile device 1 to inquire about information such as the current location and speed of the car.

Further, referring to FIG. 3 , the vehicle control unit 2 may further include: a vibration sensor module 27 , and the vibration sensor 27 is electrically connected to the second MCU 22 .

In this embodiment, the current state of the stationary car can be detected by the vibration sensor module 27. Once there is a violent intrusion or collision, the vibration sensor module 27 will cause the second MCU22 to wake up from the low power consumption mode, and pass the second MCU22 Send the current state information, alarm signal and GPS information of the car to the remote server for storage and management, and send commands to the car electronic control ECU unit through the CAN bus conversion module 23 to control the opening of the engine locking system and cut off the car ignition system and The oil circuit system, at the same time, sends out an alarm by controlling the sound and light system. This greatly increases the anti-theft performance of the car.

Further, referring to FIG. 3 , the vehicle control unit 2 may further include: a Global System for Mobile Communication (GSM for short) module 28 , and the GSM module 28 is electrically connected to the second MCU 22 .

In this embodiment, the vehicle-mounted control unit 2 integrates a GSM module 28, which can upload information such as the real-time GPS position of the car, identity verification, one-key start, and vehicle-mounted OBD data (engine speed, fuel consumption, mileage) to the GSM module 28. In the designated server, it can be inquired by mobile phone users or webpage customer service. That is, the Internet of Things technology is used to send the relevant information of the car to the remote database for cloud computing and storage. The driver can view the relevant data of the car at any time through mobile devices such as mobile phones, so that the driver can keep abreast of the corresponding situation of the car at any time.

The embodiment of the utility model replaces the smart key in the traditional keyless entry and start system by integrating the smart mobile device with the first NFC module for sending identification information, so that the car keyless entry and start system does not need additional configuration The intelligent key not only reduces the manufacturing cost, but also avoids the extra economic loss caused by the loss of the intelligent key.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (6)

1. an automobile no-key enters, starts system, it is characterised in that described system includes: Intelligent mobile equipment, vehicular control unit and onboard diagnostic system OBD data extension line,

Described Intelligent mobile equipment includes: for sending the first near-field communication NFC module of identity identification information,

Described vehicular control unit includes: for receiving the second NFC module of described identity identification information, the second micro-control unit MCU, controller local area network's CAN modular converter and one-key start button, described second NFC module, described CAN modular converter and described one-key start button all electrically connect with described 2nd MCU

One end of described OBD data extension line electrically connects with the electronic control unit ECU of automotive interior, and the other end of described OBD data extension line electrically connects with described CAN modular converter.

2. system according to claim 1, it is characterized in that, described Intelligent mobile equipment also includes: a MCU, the first wireless transport module and input module, and described first NFC module, described first wireless transport module and described input module all electrically connect with a described MCU

Described vehicular control unit also includes: the second wireless transport module, and described second wireless transport module electrically connects with described 2nd MCU, described second wireless transport module and described first wireless transport module wireless connections.

3. system according to claim 2, it is characterised in that described first wireless transport module and described second wireless transport module all include: wifi module and at least one in bluetooth module.

4. the system according to any one of claim 1-3, it is characterised in that described vehicular control unit also includes: global position system GPS module, described GPS module electrically connects with described 2nd MCU.

5. the system according to any one of claim 1-3, it is characterised in that described vehicular control unit also includes: vibrating sensing module, described vibrating sensor electrically connects with described 2nd MCU.

6. the system according to any one of claim 1-3, it is characterised in that described vehicular control unit also includes: global mobile communication gsm module, described gsm module electrically connects with described 2nd MCU.