CN104859407A - Automobile sun shield for controlling secure startup of automobile through retina identification - Google Patents

Abstract

The invention aims to overcome the unsafe and unstable problems existing in the existing car anti-theft device, and discloses a car sun visor that controls the safe start of the car through retina recognition. The cover is on the sun visor. There is a window on the sun visor cover. The shaft at one end of the sun visor is connected to the output shaft of the stepper motor through a coupling. An inclination sensor and a retina are installed between the sun visor and the sun visor cover. The recognition device, the stepper motor, the inclination sensor and the retina recognition device are connected to the digital signal processor through their respective wiring harnesses, and a control switch, a power supply module and a pressure sensor located on the seat of the car cab are respectively connected to the digital signal processor Connection, the digital signal processor is connected with the automobile ECU, the invention controls the starting of the automobile engine through the recognition of the retina, and then improves the safety and anti-theft performance of the automobile.

Description

A car sun visor that controls the safe start of the car through retinal recognition

technical field

The invention relates to the field of anti-theft devices for automobiles, in particular to an automobile sun visor that controls the safe start of automobiles through a retina recognition device.

Background technique

With the rapid development of the automobile market and the improvement of people's living standards, more and more cars have entered ordinary families, and the car anti-theft system has become an indispensable safety device on the car. With the development of science and technology, the car anti-theft system has changed from the traditional simple mechanical key anti-theft technology to the remote-controlled electronic anti-theft and biometric electronic anti-theft technology. Among them, the remote-controlled electronic anti-theft system is widely used in many original factory-configured car anti-theft systems. . But the car theft technology that follows is also improving constantly, and for this phenomenon, various car anti-theft products are constantly released on the market. Wherein the more typical car anti-theft alarms have add-on anti-theft devices and anti-theft devices that adopt electronic code keys, but these anti-theft means all have some safety loopholes, and are not the most reliable anti-theft devices.

Even some high-end cars are also equipped with fingerprint anti-theft devices to identify the driver's identity. However, fingerprints can also be changed or destroyed by high-tech imitation technology, surgery or some invasive means, which is not the most stable and reliable identification method. The invisibility and uniqueness of retina recognition technology can avoid these problems, and it is the most advanced identification technology that cannot be imitated or destroyed.

Contents of the invention

The invention aims to overcome the unsafe and unstable problems existing in the existing car anti-theft device, and provides a car sun visor with retina recognition function. In addition to realizing the basic functions of the sun visor, the sun visor of the invention can also control the starting of the automobile engine through the recognition function of the retina, thereby improving the safety and anti-theft performance of the automobile.

The present invention can be realized through the following technical solutions:

A car sun visor that controls the safe start of the car through retina recognition, including a sun visor, the rotating shaft of the sun visor is fixed on the fixed plate through the rotating shaft support seats at both ends of the rotating shaft, the fixed plate is installed on the roof of the car cab, and the sun visor cover The cover is on the sun visor, and there is a window on the sun visor cover. It is characterized in that the rotating shaft at one end of the sun visor is connected with the output shaft of the stepping motor fixed on the stepping motor bracket on the side of the fixed plate through a coupling. Connection, the inclination sensor and the retina recognition device are installed between the sun visor and the sun visor cover. The retina recognition device is located at the window position of the sun visor cover. connection, there is also a control switch, a power module and a pressure sensor located on the seat of the car cab are respectively connected to the digital signal processor through their respective wire harnesses, and the digital signal processor is connected to the car ECU that controls the start and stop of the car engine through the wire harness .

Further technical solutions include:

The retina scanning device is connected to the parallel peripheral interface of the digital signal processor through the data line, the stepper motor is connected to the three-phase PWM generation unit interface of the digital signal processor through the data line, and the inclination sensor is connected to the digital signal processing unit through the data line. The pressure sensor is connected to the serial port of the digital signal processor through a data line, the control switch is connected to the serial port of the digital signal processor through a wire, and the link port of the digital signal processor is connected to the digital signal processor through a data line. The automobile ECU is connected, the power input end of the power module is connected with the automobile power output end, and the power output end of the power module is connected with the power input end of the digital signal processor.

Description of drawings

Fig. 1 is a structural representation of a car sun visor that controls the safe start of a car through retinal recognition according to the present invention;

Fig. 2 is a structural block diagram of a control system for a car sun visor that controls the safe start of a car through retina recognition according to the present invention;

Fig. 3 is a schematic diagram of the distribution of the control switch keys of a car sun visor that controls the safe start of the car through retina recognition according to the present invention;

Fig. 4 is a flow chart of setting memory position of the sun visor of a car for controlling the safe start of the car through retina recognition according to the present invention;

Fig. 5 is a schematic diagram of the work flow of a car sun visor that controls the safe start of the car through retinal recognition according to the present invention;

In the figure: 1. Sun visor, 2. Rotating shaft, 3. Retina recognition device, 4. Stepping motor, 5. Fixed plate, 6. Coupling, 7. Rotating shaft support seat, 8. Stepping motor bracket, 9. Inclination sensor, 10. Sun visor cover, 11. Pressure sensor, 12. Control switch, 13. Digital signal processor, 14. Automotive ECU, 15. Automotive engine, 16. Power module.

Detailed ways

As shown in Figure 1, a car sun visor that controls the safe start of the car through retina recognition includes a sun visor 1, and the rotating shaft 2 of the sun visor 1 is fixed on the fixed plate 5 through the rotating shaft support seats 7 at the two ends of the rotating shaft 2, and the fixed plate 5 is installed on the ceiling of the cab of the car, the sun visor cover 10 is covered on the sun visor 1, and a window is opened on the sun visor cover 10, and the feature is that the rotating shaft 2 at one end of the sun visor 1 is connected to the sun visor 1 through the coupling 6 The output shaft of the stepper motor 4 fixed on the stepper motor bracket 8 on one side of the fixed plate 5 is connected, and an inclination sensor 9 and a retina recognition device 3 are installed between the sun visor 1 and the sun visor cover 10, and the retina recognition device 3 Located at the window position of the sun visor cover 10, as shown in Figure 4, the stepper motor 4, the inclination sensor 9 and the retina recognition device 3 are connected to the digital signal processor 13 through their respective wire harnesses, and there is also a control switch 12 and a power module 16 and a pressure sensor 11 positioned on the seat of the automobile cab are respectively connected to the digital signal processor 13 through their respective wiring harnesses, and the digital signal processor 13 is connected to the ECU 14 controlling the start and stop of the automobile engine 15 through the wiring harness. The control switch 12 are installed on the control panel of the car cab. The digital signal processor 13 whose model is Blackfin609 adopts a high-speed digital signal processor to realize the control of the whole system.

The retina scanning device 3 is connected to the parallel peripheral interface of the digital signal processor 13 through a data line, and the stepping motor 4 is a micro stepping motor whose model is 35BH28-019A, and the stepping motor 4 is connected to the digital signal processor 13 through a data line. The three-phase PWM generation unit interface connection of digital processing signal processor 13, described inclination sensor 9 adopts MMA7361 type uniaxial inclination sensor, and inclination sensor 9 is connected with the serial port of digital signal processor 13 by data line, and described The pressure sensor 11 is a ceramic piezoresistive pressure sensor whose model is ASF1-CERAMET, the pressure sensor 11 is connected with the serial port of the digital signal processor 13 through a data line, and is used to detect whether the driver is in place, and the control switch 12 Adopt self-resetting type, be installed on the control panel of automobile cab, the switch circuit of control switch 12 is directly connected with the serial port of digital signal processor 13 by wire, and described automobile ECU 14 is connected with digital signal processor by data line 13 link port connection, the power input terminal of the power supply module 16 is connected with the 12V power supply output terminal on the car, after the power supply module 16 steps down the 12V voltage to 5V voltage, the 5V voltage output terminal of the power supply module 16 is connected with the digital The power input terminal of the signal processor 13 is connected.

As shown in Figure 2, the control switch 12 of the present invention is made up of four parts, and the S1 key and the Y1 key on the upper left side are formed to realize the setting part of the sun visor memory switch, the S1 key is the setting control key, and the Y1 key is the confirmation key; The A key, B key, and C key on the side form the memory switch part of the sun visor. The A key is the No. 1 memory position key, the B key is the No. 2 memory position key, and the C key is the No. 3 memory position key; the S2 key on the upper right side and the The Y2 key forms the part that controls the retina input, and the S2 is the selection input key. Y2 is the input confirmation key; the U key, E key, and D key on the lower right side form the self-adjusting switch part. The U key can control the sun visor 1 to rotate upward along the rotating shaft 2, and the D key can control the sun visor 1 to rotate downward along the rotating shaft 2. , press the E key to require the sun visor to fall to block the sun when driving.

Before the whole system starts to use, you need to set the memory switch of sun visor 1 first. The setting process is shown in Figure 3. Press the S1 key and the system will start to initialize the memory position of the sun visor 1. Press the A key to start the No. 1 memory position key. To set, press the U key or the D key to adjust the opening angle of the sun visor 1, and press the Y1 confirmation key. The digital signal processor 13 stores the opening angle information of the sun visor 1 transmitted from the inclination sensor 9, that is, the memory position No. 1 is completed. , the setting method of No. 2 memory position and No. 3 memory position is the same as that of No. 1 memory position. If you want to open the sun visor 1 to No. 1 memory position in the subsequent process, just press A key, the digital signal processor 13 controls the rotation of the stepping motor 4, and when the information transmitted by the inclination sensor 9 matches the previously stored No. location.

Before the system starts to use, the retinal information of the permitted driver needs to be entered. The entry process is as follows: When the sun visor 1 is opened and adjusted to the best scanning position, press the S2 key, and the retinal recognition device 3 starts to record the retinal information of the driver. Scan and transmit the information to the digital signal processor 13, press the confirmation key Y2 to store it by the digital signal processor 13, the system can record multiple driver retinal information as a matching standard, and can add at any time.

As shown in Figures 4 and 5, the specific control principle and measurement and control process of the embodiment of the present invention are as follows: when the driver sits in the driver's seat, the pressure sensor 11 will sense the information that the driver is in place and send it to the digital signal processor 13, Then the digital signal processor 13 controls the stepper motor 4 to rotate so that the sun visor 1 is opened to the No. 1 memory position. If the sun visor 1 is opened to the No. 2 memory position or the No. 3 memory position, the control switch 12 can be manually pressed. B key or C key, in the process of opening the sun visor 1 to the memory position, the inclination sensor 9 transmits the opening angle information of the sun visor 1 to the digital signal processor 13, if the sun visor 1 is not opened to the memory position, Digital signal processor 13 continues to drive stepping motor 4 to rotate, if sun visor 1 has reached memory position, digital signal processor 13 makes step motor 4 stop rotating; If sun visor 1 has reached required memory position but driving The driver still thinks that the scanning position of the retina recognition device 3 is not good enough, the driver can manually press the U key or the D key in the control switch 12 to adjust until the scanning is successful, then the sun visor 1 automatically returns to the closed state; then the retina scanning device 3 Convert the scanned retinal image information into digital information and send it to the digital signal processor 13. After checking with the previously entered retinal information, the digital signal processor 13 judges whether it is a qualified driver and sends it to the car ECU 14 according to the result. 0 or 1 instruction, the automobile ECU 14 controls whether the automobile engine 15 starts according to the instruction, and completes the automobile safety starting process. In addition to the above process, if you need to open the sun visor 1 to block the sun at any time, you only need to press the E key in the control switch 12 on the control panel of the cab to open the sun visor 1, and you can also press the A key and the B key to open the sun visor 1. and C keys to open the sun visor 1 to the No. 1 memory position, No. 2 memory position and No. 3 memory position, or manually press the U key or D key to adjust the opening angle of the sun visor.

Claims (2)

1. one kind controls the automotive sunshade panel of automobile safety start by retina identification, comprise a sun shield (1), the rotating shaft (2) of sun shield (1) is fixed on adapter plate (5) by the rotating shaft supporting seat (7) at rotating shaft (2) two ends, adapter plate (5) is arranged on the ceiling of automobile cab, sun shield housing (10) covers on sun shield (1), sun shield housing (10) has a window, it is characterized in that, the rotating shaft (2) of sun shield (1) one end is connected by the output shaft of coupler (6) with the stepping motor (4) on the stepping motor support (8) being fixed on adapter plate (5) side, obliquity sensor (9) and retina recognition device (3) are installed between sun shield (1) and sun shield housing (10), retina recognition device (3) is positioned at the window's position of sun shield housing (10), stepping motor (4), obliquity sensor (9) is connected with digital signal processor (13) by respective wire harness with retina recognition device (3), also has a master cock (12), a power module (16) is connected with digital signal processor (13) respectively by respective wire harness with a pressure sensor (11) be positioned on automobile cab seat, digital signal processor (13) is connected with the automobile ECU (14) controlling automotive engine (15) start and stop by wire harness.

2. one kind controls the automotive sunshade panel of automobile safety start by retina identification, it is characterized in that, described retinal scan device (3) is connected by the parallel Peripheral Interface of data line with digital signal processor (13), stepping motor (4) is connected with the three-phase PWM generating unit interface of digital signal processor (13) by data line, obliquity sensor (9) is connected by the serial port of data line with digital signal processor (13), pressure sensor (11) is connected by the serial port of data line with digital signal processor (13), master cock (12) is connected by the serial port of electric wire with digital signal processor (13), the link port of digital signal processor (13) is connected with automobile ECU (14) by data line, the power input of described power module (16) is connected with automobile power source mouth, the power output end of power module (16) is connected with the power input of digital signal processor (13).