JPH044438B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD OF THE INVENTION The present invention relates to unlocking the door lock of a motor vehicle. More specifically, the present invention relates to a device for unlocking a locked automobile door lock using a predetermined card specified from the outside.
This is a device that opens the lock by reading the pattern written on the card.It is easy to operate, can be used with any type of key, and can be easily maintained even if the key card is lost. Relating to locking devices.

Prior Art and its Problems Traditionally, automobile door locks have been locked and unlocked using so-called keys, which have a plurality of V-shaped grooves formed in a predetermined tooth shape on a plate-like plate. Common. However, these conventional mechanisms have various problems such as restrictions on setting the type of key, ease of theft due to duplicate keys, malfunction, etc., and difficulty in operability due to deformation of the keyhole, etc. was. In order to solve these problems, electronic unlocking devices and the like have been developed. for example,
Devices that unlock the door by inserting a specific magnetic card into the door, or devices that unlock the door by pressing specific numbers on a touch switch consisting of a plurality of number arrangements are known. For example, the operating mechanism part for operating from the outside of the vehicle must be provided with an opening on the outer wall of the door, and as a result, it is susceptible to temperature rises due to wind, rain, and direct sunlight. It has many drawbacks, such as a shortened lifespan and a tendency to break down.

Purpose of the present invention The present invention was invented in view of the above-mentioned drawbacks, namely, it significantly increases the difficulty of unlocking by a third party such as theft, and extremely facilitates unlocking by the person concerned. The device performs the unlocking operation using the image of the card pattern as input, and has excellent operability and can be easily maintained in case the card used as the unlocking key is lost.Furthermore, it has a long life and is highly reliable. The object of the present invention is to provide an automobile door lock unlocking device.

Structure of the Present Invention A preferred embodiment of the automobile door lock unlocking device according to the present invention will be explained based on the accompanying drawings.

1 is a two-dimensional image sensor (hereinafter referred to as two-dimensional
(called CCD). The two-dimensional CCD 1 is mounted in a case 4a formed in a predetermined shape and installed near the lower part of the window in the vehicle interior, as in the embodiment shown in FIG. 2, for example. However, the two-dimensional
The CCD 1 applies the pattern of the card 14 to a predetermined position on the outside of the window glass 15 with the pattern facing inward.
When a predetermined switch is operated, the pattern of the card 14 is imaged through the reflecting mirror 13 and the lens 1a, and a predetermined video signal is derived.
Reference numeral 2 denotes a driver for driving the two-dimensional CCD 1, which generates various pulses and at the same time outputs a sampling signal of a video signal, a vertical simultaneous signal, and a horizontal synchronizing signal.

3 is a binarization or analog-to-digital converter, which binarizes the video signal derived by the two-dimensional CCD 1 according to the period of the sampling pulse derived by the two-dimensional CCD driver 2, or converts the analog signal into a digital signal. convert it
Input to CPU5. 4 is the two-dimensional CCD 1,
There is a signal processing circuit unit consisting of a two-dimensional CCD driver 2 and a binarization or analog/digital converter 3, and 4a is a case in which these are built-in. 5 is a CPU (central processing unit). When the CPU 5 re-inputs the video signal input from the two-dimensional CCD 1 through binarization or the analog-to-digital converter 3, the CPU 5 compares the two video signals and determines whether there is a difference based on a preset standard, If they are the same or substantially the same, a predetermined signal is derived and a predetermined drive load 6 is driven. Note that data in storage area X for video signals stored in advance and storage area YY for video signals input to unlock the car door.
The comparison with the data is performed as follows.
The CPU 5 receives the input video signal and at the same time stores the data in the storage area Y, and compares it with the data in the storage area X stored in advance.
This comparison can be done, for example, as shown in the truth value shown in Figure 3.
The data in storage area ” is derived. The CPU 5 adds up the number of pixels for which the level "1" has been derived, makes a judgment based on a comparison with a preset reference value, and outputs a predetermined signal. Note that 5a is a power supply circuit connected to the CPU 5.

6 is a drive load for unlocking. The driving load 6
For example, a motor or a solenoid is used to unlock a car door. The drive load 6 is driven by a predetermined signal output from the CPU 5.
7 is a storage operation switch for storing the pattern of the card 14 in the storage area X of the CPU 5 in advance. The memory operation switch 7 is located at any desired position within the vehicle interior. 8 is a timer. The timer 8 is a timer for the memory operation switch 7 which is operated to store the pattern of the card 14 in advance in the CPU 5, and is a timer for automatically opening the operation switch 7 after closing the circuit for a predetermined time. It is. 9 is a door outer handle switch. The door outer handle switch 9 inserts the card 14 into the window glass 1 of the automobile in order to unlock the door lock of the automobile.
This is a switch provided inside the door outer handle 9a, which is normally used to open and close the door, in order to activate the CPU 5 by applying it to a predetermined position of the door outer handle 9a. is closed. 10 is a timer. The timer 10 is activated by the operation of the door outer handle switch 9, and is activated for a preset time, e.g.
This closes the door outer handle switch 9. 11 is a transistor. The transistor 11 uses, for example, a power amplifying field effect transistor (hereinafter referred to as a power MOS FET), and is turned on only while the preload timer 10 is closed to light the illumination lamp 12.
12 is an illumination lamp. The illumination lamp 12 is
The pattern on the card 14 is illuminated to facilitate the transmission of optical signals to the two-dimensional CCD 1. Incidentally, the illumination lamp 12 can also be used as a car interior light.
13 is a reflecting mirror. The reflecting mirror 13 is
The pattern of the card 14 reflected through the window glass 15 is further recorded on a two-dimensional CCD through the lens 1a.
This is a mirror that reflects the light according to the position of the two-dimensional CCD 1 in order to display an image on the two-dimensional CCD 1. 14 is a card. The cards 14 are, for example,
As shown in FIG. c, a pattern arbitrarily set as desired is formed, such as a combination of numbers, a combination of letters, or a pattern. 15 is a car window glass.

Effects of the Invention First, a card 14 on which a pattern arbitrarily set as desired is applied to a predetermined position on the outside of a windshield 15 of an automobile, as shown in FIG. When the memory operation switch 7 is operated and closed, a predetermined potential is applied to the input port and HALT terminal of the CPU 5. At the same time, the transistor 11 is turned on and the illumination lamp 12 is turned on, so that the pattern of the card 14 causes an optical signal of an image to be introduced into the two-dimensional CCD 1 via the reflective mirror 13 and the lens 1a. The two-dimensional CCD 1 divides the pattern of the card 14 into a predetermined number of pixels and sequentially scans each pixel from one end to derive an analog video signal. The derived analog video signal is binarized or digitized by an analog-to-digital converter and then sent to the CPU 5.
is stored in storage area X of . In this way, the data of the unlock signal for unlocking the door lock of the vehicle is stored, and this memory is stored for some reason.
The data is continuously stored in the storage area X unless the power supply circuit 5a of the CPU 5 is opened. The electric circuit of the memory operation switch 7 is automatically restored to its original open state by the action of the timer 8 when the memory operation is completed.

Next, in order to unlock the door lock of the car, the card 14 is inserted into the window glass 15 in the same manner as above.
Place the door outer handle 9a in the specified position.
When operated, the door outer handle switch 9 is activated and a potential is applied to the HALT terminal of the CPU 5. At the same time, the transistor 11 is turned on, and the illumination lamp 12 is turned on to illuminate the card 14. Next, the two-dimensional CCD 1 converts the pixels of the pattern on the card 14 into a video signal and converts it into a video signal as described above or through the analog-to-digital converter 3.
Introduce it to CPU5. The CPU 5 operates to memorize the pattern of the inserted card 14, but since the memory operation switch 7 is not operated at this time and is in the OFF state, the stored data is stored in the memory area. Stored in Y.
The video signal data stored in storage area Y is
It is compared with the video signal data already stored in the storage area X to derive a predetermined signal.
That is, the pre-stored video signal data of storage area In case,
Determining that they are the same card, the CPU 5 derives a signal to drive the drive load 6. That is, the solenoid or motor used as the driving load 6 is operated to unlock the door of the automobile.
As explained above, the system is such that a video signal of a pattern arbitrarily set on the card 14 is stored in advance in the CPU 5 as data, and the door lock is unlocked only when the video signal data of the same pattern is input. , multiple different cards 1
4, the card 14 that is the key to unlocking can be easily changed, for example, on a weekly or monthly basis, and multiple cards 14 can be stored in memory.
If either one of them is present, it will operate with various functions such as being able to unlock the door.

Other Embodiments of the Present Invention Another embodiment of the automatic door lock unlocking device according to the present invention will be described with reference to FIG.

16 is a light guide. The light guide 16 is composed of a bundle of a plurality of optical fibers, and one end side faces the lower window glass near the window in the vehicle interior, and has a spread area and a predetermined density so as to correspond to the pattern surface of the card 14. It is formed of. The other end faces the two-dimensional CCD 1 installed inside the door 17. Thus, when the card 14 is placed facing the light guide 16 from outside the window glass 15, the pattern of the card 14 is input to the two-dimensional CCD 1 via the light guide 16. still,
An illumination lamp (not shown) for illuminating the card 14 is turned on when the memory operation switch 7 or the door outer handle switch 9 is operated, as in the previous embodiment. Other operations are performed in the same manner as in the previous embodiment, and a more compact mechanism can be achieved.

Effects of the Invention As described above, the present invention has a structure in which the card pattern is stored in the central processing unit based on the operation of the memory operation switch provided in the vehicle interior, so the card pattern which becomes the key for unlocking the vehicle is stored in the central processing unit. can be changed at any time as desired, and many types of keys can be set. Therefore, maintenance is easy in case of loss, and it is extremely effective and highly reliable in preventing theft.

In addition, by simply placing the card against the window glass and operating the door outer handle, the pattern on the card is compared with the pattern stored in advance in the central processing unit and the door lock is unlocked, providing excellent operability. It has the effect of

[Brief explanation of drawings]

FIG. 1 is a basic block diagram showing the operating principle of an automobile door lock unlocking device according to the present invention.
FIG. 2 is a sectional view of a main part of a door showing an embodiment of the automobile door lock unlocking device according to the present invention. FIG. 3 is an explanatory diagram of truth values showing one embodiment of the operation of the automobile door lock unlocking device according to the present invention. FIGS. 4a, b, and c show examples of patterns of unlocking cards for the automobile door lock opening device according to the present invention, and FIG. 4a shows an example in which numbers are combined. FIG. 4b shows an example in which characters are combined. FIG. 4c is an example of a pattern. Fifth
The figure is a flowchart showing the operation of the CPU of the automobile door lock unlocking device according to the present invention.
FIG. 6 is a sectional view of the main part of a door showing another embodiment of the automobile door lock unlocking device according to the present invention. 1... Two-dimensional CCD, 3... Binarization or analog-to-digital converter, 5... CPU, 6...
Drive load, 7... Memory operation switch, 9... Door outer handle switch, 12... Lighting lamp.

Claims (1)

[Scope of Claims] 1. A two-dimensional image sensor that receives light from a pattern on a card through a window glass, converts the image formed on a photosensitive surface into an analog signal, and outputs it, a driver that drives the two-dimensional image sensor, and a driver that drives the analog signal. A signal processing circuit unit comprising a binarization or analog-to-digital converter for converting into a digital signal, and a storage area for storing the digital signal derived by the signal processing circuit unit based on the operation of a storage operation switch provided in the vehicle interior. a central processing unit that stores the digital signal and compares the digital signal derived by the signal processing circuit unit based on the operation of the door outer handle switch with the digital signal previously stored in the storage area to derive a predetermined signal; 1. A door lock unlocking device for an automobile, comprising a driving load for unlocking the door lock using a predetermined signal derived from a central processing unit.