CN211519454U

CN211519454U - Novel face identification car unblock device

Info

Publication number: CN211519454U
Application number: CN201922215017.XU
Authority: CN
Inventors: 杨丹丹; 李春宇; 朱成元; 贾福禄; 周航
Original assignee: Liaoning Branch Of World Science And Technology Co ltd
Current assignee: Liaoning Branch Of World Science And Technology Co ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-09-18
Anticipated expiration: 2029-12-11

Abstract

In order to solve the problem that current face identification car unlocking device is not suitable for the transformation of the car of having made, the utility model provides a novel face identification car unlocking device, include master control MCU and be used for face identification's camera. The system also comprises an automobile remote control key circuit, and the master control MCU is a wireless SOC module; the automobile remote control key circuit and the camera are connected with a port of the wireless SOC module. The automobile remote control key circuit comprises an automobile remote control key chip, a three-axis antenna and an RF transmitting chip connected with the automobile remote control key chip, wherein the automobile remote control key chip and the three-axis antenna are sequentially connected; the automobile remote control key chip is connected with the wireless SOC module through a key enabling circuit. The remote control key circuit of the automobile is integrated in the fingerprint unlocking device, the unlocking and locking functions of the remote control key are directly realized by using the face recognition function, the remote control key circuit is completely the same as the remote control key of the automobile, the control system in the automobile does not need to be changed, and the remote control key circuit can be used for changing the automobile which leaves the factory.

Description

Novel face identification car unblock device

Technical Field

The utility model relates to a car intelligent control field, in particular to novel face identification car unblock device.

Background

At present, automobiles have already gone into each family, and the number of automobiles also greatly increases, and in the prior art, there is an automobile face recognition unlocking device, for example: the publication number is: chinese patent CN 208861343U discloses an automobile unlocking system based on face recognition. However, the above automobile fingerprint unlocking device also has the following technical problems:

the publication number is: the chinese patent CN 208861343U requires modification of the control system of the vehicle itself, otherwise, unlocking and starting cannot be realized, and when implementing, the control circuit of the vehicle needs to be modified, which is inconvenient to implement and not suitable for modifying the vehicle that leaves the factory.

Disclosure of Invention

In order to solve the problem that current face identification car unlocking device is not suitable for the system of reforming of the car of having made, the utility model provides a novel face identification's car unlocking device with the remote key circuit integration of car in the fingerprint unlocking device, directly realize unblanking and closing the lock function of remote key with the face identification function, the function identical with the remote key of car, need not to change the inside control system of car, can be used for the system of reforming of the car of having dispatched from the factory.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a novel face recognition automobile unlocking device comprises a main control MCU and a camera for face recognition.

The utility model is characterized in that the system also comprises a vehicle remote control key circuit, and the master control MCU is a wireless SOC module; the automobile remote control key circuit and the camera are connected with a port of the wireless SOC module.

The automobile remote control key circuit comprises an automobile remote control key chip, a three-axis antenna and an RF transmitting chip, wherein the automobile remote control key chip and the three-axis antenna are sequentially connected; the automobile remote control key chip is connected with the wireless SOC module through a key enabling circuit.

Further, an emergency signal control analog switch chip is connected between the automobile remote control key chip and the three-axis antenna, a control end of the emergency signal control analog switch chip is connected with the wireless SOC module, a signal input end of the emergency signal control analog switch chip is connected with an output end of any one of the shafts of the automobile remote control key chip, and a signal output end of the emergency signal control analog switch chip is connected to a signal input end of the three-axis antenna.

Further, the wireless SOC module is connected with the fingerprint module through a fingerprint enabling circuit.

Furthermore, the wireless SOC module is also connected with a code keyboard through a matrix keyboard circuit.

Furthermore, the camera, the fingerprint module and the password keyboard are integrally installed on the B column of the automobile.

The automobile lock state detection circuit is a voltage sampling circuit, the input end of the automobile lock state detection circuit is connected to an automobile door lock state signal line, and the output end of the automobile lock state detection circuit is connected with the wireless SOC module. And detecting whether the automobile is in a locking state or an opening state, if the automobile is in the locking state, executing unlocking output by the remote control key, and if the automobile is in the opening state, executing locking output by the remote control key.

Further, the wireless SOC module is an NRF series module.

Compared with the prior art, the beneficial effects of the utility model are that:

1) the utility model discloses adopt car key function simulation technique in current face identification unblock technique: the remote control key circuit of the automobile is integrated in the face recognition unlocking device, the unlocking and locking functions of the remote control key are realized by directly using the face recognition function, the functions of the remote control key circuit are completely the same as those of the remote control key of the automobile, and a control system in the automobile does not need to be changed; meanwhile, the method is suitable for the remanufacturing of the automobile which leaves the factory;

2) because the remote key circuit is integrated, the remote key does not need to be sensed after fingerprint verification, and the car owner can unlock the car without carrying the remote key;

3) an emergency signal control analog switch chip is arranged in a remote control key circuit and used for disconnecting an induction antenna of the key to prevent the key from being started in an emergency under the condition of power failure;

4) meanwhile, the fingerprint and password keyboard unlocking device has multiple unlocking modes and complete functions;

5) the automobile locking state detection circuit detects whether the automobile is in a locking state or an unlocking state, if the automobile is in the locking state, the remote control key executes unlocking output, and if the automobile is in the unlocking state, the remote control key executes locking output;

6) the wireless on-chip SOC chip is adopted, so that the size is small, the integration level is high, the occupied space is small, and the system is suitable for the modification of the existing automobile;

7) the device is integrally arranged on the B column of the automobile, and is convenient and simple to use.

Drawings

Fig. 1 is a block diagram of the overall circuit structure of the present invention;

FIG. 2 is a circuit diagram of the SOC chip of the present invention;

FIG. 3 is a circuit diagram of the automobile remote control key chip and RF transmitting chip of the present invention;

fig. 4 is a circuit diagram of a triaxial antenna of the present invention;

fig. 5 is a circuit diagram of the emergency signal control analog switch chip of the present invention;

FIG. 6 is a circuit diagram of the car locking state detection circuit of the present invention;

fig. 7 is a fingerprint enabled circuit diagram of the present invention;

fig. 8 is a key enable circuit diagram of the present invention;

fig. 9 is a camera enable circuit diagram of the present invention;

fig. 10 is a circuit diagram of the matrix keyboard of the present invention;

fig. 11 is a layout diagram of the present invention (which can be installed on a B-pillar of an automobile).

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in fig. 1, a novel face recognition automobile unlocking device includes a main control MCU and a camera for face recognition.

The utility model is characterized in that the system also comprises a vehicle remote control key circuit, and the master control MCU is a wireless SOC module; the automobile remote control key circuit and the camera are connected with a port of the wireless SOC module. The wireless SOC module still enable circuit connection fingerprint module through the fingerprint. The wireless SOC module is also connected with the code keyboard through a matrix keyboard circuit.

The automobile remote control key comprises an automobile remote control key chip, a three-axis antenna, an emergency signal control analog switch chip, a wireless SOC module, a signal input end and a signal output end, wherein the emergency signal control analog switch chip is connected between the automobile remote control key chip and the three-axis antenna, the control end of the emergency signal control analog switch chip is connected with the wireless SOC module, the signal input end is connected with the output end of any one of the automobile remote control key chip, and the signal output end of the emergency signal.

The vehicle locking state detection circuit is a voltage sampling circuit, as shown in fig. 6, the input end of the vehicle locking state detection circuit is connected to a vehicle door lock state signal line, and the output end of the vehicle locking state detection circuit is connected with the wireless SOC module. And detecting whether the automobile is in a locking state or an opening state, if the automobile is in the locking state, executing unlocking output by the remote control key, and if the automobile is in the opening state, executing locking output by the remote control key.

The following are specific embodiments of the present invention:

as shown in fig. 2, in order to realize the circuit diagram of the wireless SOC module of the present invention, NRF52832 series modules are used in the diagram, and the ports thereof are: the KEY _ EN pin of pin No. 15 is connected to the KEY _ v signal output terminal of the KEY fob chip of fig. 3 through the KEY enable circuit of fig. 8; the EMERG signal end is directly connected with the emergency signal control analog switch of FIG. 5; the other pins correspond to the circuits in fig. 6-10 one by one according to the pin identifiers, and the following circuit diagrams are described.

In fig. 3-5, the key fob chip is PCF7953PTTAC1800, the RF transmitter chip is TDK5100F, and the RF transmitter chip is connected to the key fob chip through a 7 th (FSKDTA) pin, in the figures, the X1, X2, Y1, Y2, and Y3 pins of the key fob chip are input pins of the three-axis antenna of fig. 4, wherein the X2 pin (which may be any one pin of the three-axis antenna) is not directly connected to the three-axis antenna, and is connected to the three-axis antenna of fig. 4 through the emergency signal control analog switch chip of fig. 5.

IN fig. 5, TS5a3166DCKR is an emergency signal control analog switch chip, the IN pin of the input terminal thereof is connected to the EMERG signal output terminal of the wireless SOC, the X-axis output signal X2 of the 3-axis output signal of the remote key chip of the key circuit is first connected to the NC terminal of the input pin of the emergency signal control analog switch chip, and then the COM terminal (X2K signal) of the output pin of the emergency signal control analog switch chip is connected to the X2 input terminal of the three-axis antenna IN fig. 4.

As shown IN fig. 6, the car lock state detection circuit is a voltage sampling circuit, and is a voltage sampling circuit composed of a resistor R34, the input end of the voltage sampling circuit is connected to a car lock state signal line SC _5V, and the output end SC _ IN is connected to the wireless SOC module. And judging whether the automobile is in a locking state or an unlocking state, if the automobile is in the locking state, executing unlocking output by the remote control key, and if the automobile is in the unlocking state, executing locking output by the remote control key.

Fig. 7-9 are a fingerprint enabling circuit, a key enabling circuit and a camera enabling circuit, which are MOS transistor switching circuits, respectively, and the input terminals (ZW _ EN \ key _ EN \ SXT _ EN) are connected to the wireless SOC chip of fig. 2, and the output terminals are connected to respective devices.

Fig. 10 is a conventional matrix keyboard circuit, which will not be explained in detail here, and is common knowledge to those skilled in the art.

In the circuit diagrams 2-10, the port pins of each drawing correspond to one another, and the skilled person can recognize the diagrams.

As shown in fig. 11, the camera 1, the fingerprint module 2 and the password keyboard 3 are integrally installed on a panel, the position of the display screen 4 is reserved on the panel, and the panel can be installed on a B-pillar of an automobile.

The above embodiments are implemented on the premise of the technical solution of the present invention, and detailed implementation and specific operation processes are given, but the protection scope of the present invention is not limited to the above embodiments. The methods used in the above examples are conventional methods unless otherwise specified.

Claims

1. A novel face recognition automobile unlocking device comprises a main control MCU and a camera for face recognition;

it is characterized by also comprising an automobile remote control key circuit;

the master control MCU is a wireless SOC module; the automobile remote control key circuit and the camera are connected with a port of the wireless SOC module;

2. The novel face recognition automobile unlocking device of claim 1, wherein an emergency signal control analog switch chip is further connected between the automobile remote control key chip and the three-axis antenna, a control end of the emergency signal control analog switch chip is connected with the wireless SOC module, a signal input end is connected with an output end of any one axis of the automobile remote control key chip, and a signal output end of the emergency signal control analog switch chip is connected with a signal input end of the three-axis antenna.

3. The novel face recognition automobile unlocking device as claimed in claim 1, wherein the wireless SOC module is further connected with a fingerprint module through a fingerprint enabling circuit.

4. The novel face recognition automobile unlocking device of claim 1, wherein the wireless SOC module is further connected with a password keyboard through a matrix keyboard circuit.

5. The novel face recognition automobile unlocking device according to any one of claims 1 to 4, wherein the camera, the fingerprint module and the password keyboard are integrally mounted on an automobile B column.

6. The novel face recognition automobile unlocking device according to claim 1, further comprising an automobile locking state detection circuit, wherein the automobile locking state detection circuit is a voltage sampling circuit, an input end of the voltage sampling circuit is connected to an automobile door lock state signal line, and an output end of the voltage sampling circuit is connected with the wireless SOC module.

7. The device as claimed in claim 1, wherein the wireless SOC module is NRF series module.