JPS61134477A - Electronic lock for car - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electronic lock for an automobile that unlocks the door using a switch that is turned on and off by operating the handle of the automobile door.

BACKGROUND OF THE INVENTION Conventional electronic locks for automobiles of this type include, for example, a switch that is turned on and off by operating the handle of the car, as seen in Japanese Patent Publication No. 53-109797. A device is known that counts the number of coded signals with a predetermined pulse width included in the signal and compares the number with the stored contents of a coded storage unit to unlock the device.

However, with this electronic lock, for example, if the code number is r462J, one start signal, two digit separator signals, and a total of 12 (4+6+2
) It is troublesome that the switch must be turned on and off a total of 15 times in order to input the encrypted signals.

Furthermore, since the operator relies on his or her own memory to determine how many encrypted signals have been input, the probability of input errors occurring is relatively high.

Problems to be Solved by the Invention The present invention has solved these conventional problems.The purpose of the present invention is to provide an electronic lock for automobiles that can reduce the number of times the switch is turned on and off, and can also reduce input errors. It is about providing.

Means for Solving the Problems In order to solve the above problems, the present invention provides a switch that is turned on and off by operating a handle of an automobile, a display means that sequentially updates a display state when the switch is turned on, and the switch. reading means for reading a one-digit code number indicated by the display state of the display means when a predetermined operation is performed; and a code storage unit storing the code number of a predetermined number of digits sequentially read by the reading means. A verification means for verifying the content and a means for unlocking based on a match between the verification means and the code number are provided.

Function The display means may be a digital display that displays numbers from 0 to 9, or may be a single lamp, light emitting diode, etc. that turns on and off. In the case of a digital display, when the switch is turned on, the display contents are sequentially updated from 0 to 9 at predetermined time intervals, and when it reaches 9, it returns to O and repeats the same operation. Of course, a countdown may be used. When using one lamp etc.
It is repeatedly turned on and off at predetermined intervals, and the number of times it is turned on is used to indicate a one-digit code number.

The reading means reads the display contents of the display means or the number currently indicated by the number of times the switch is turned on when a predetermined operation is performed on the switch, for example, when the switch is turned on for a predetermined period of time, or when a switch that has been turned on is turned off. is read as a one-digit code number.

If a multi-digit code number is used, the display means will be restarted every time a minus-digit code number is read until the last code number is input, and the display will restart to read the single-digit code number again. Display sequentially. Then, the code number of a predetermined number of digits sequentially read by the reading unit is compared with the stored contents of the code storage unit by the collation unit, and when the code number matches the predetermined code number, the lock is released.

Embodiment FIG. 1 is a block diagram of the main parts of an embodiment of the present invention. Reference numeral 1 denotes a handle of an automobile door. By operating this handle, a switch 2 can be turned on and off. The on/off state of the switch 2 is converted into an electrical signal at the input ink face 3 and input to the microcomputer 4. In the door lock unit 5, an electromagnetic solenoid is energized for a short time by the operation of a lock switch on the driver's seat or a detection signal of a traveling speed higher than a predetermined speed, thereby locking the door, and the electromagnetic solenoid is energized for a short time by operation of the lock switch. It has a configuration that allows unlocking by excitation in the opposite direction, and the unlocking operation is also performed by the output of the lock releasing device.

The code number setting dial 7 is used to set a 3-digit code number using three dials, and its output is converted into an electrical signal at the input ink face 3 and input to the microcomputer 4.

The microcomputer 4 is a so-called one-chip microcomputer that has a ROM, RAM, etc. inside, and an output ink face 8 is connected to it in addition to the input ink face 3, and the door lock release device is connected via the output ink face 8. 6. Power-on circuit9. A signal for controlling the switching circuit 10 and display information for the speedometer 11 are sent out.

The speedometer 11 is off when the ignition switch (not shown) is off, and when it is turned on and the switching circuit 10 is switched to the speed signal side, the speedometer 11 digitally displays the traveling speed of the vehicle in, for example, a three-digit number. do. Further, even when the ignition switch is off, the power is turned on by the power supply circuit 9, and when the switching circuit 10 is switched to the microcomputer 4 side, the next numerical information is displayed as, for example, a one-digit number. The speedometer 11 is placed on the instrument panel and can be seen from outside the vehicle.

FIG. 2 is a diagram showing an example of the on/off state of the switch 2 and changes over time in the display contents of the speedometer 11 when this embodiment is operated, and when r462J is input as the code number. shows. Further, FIG. 3 is a flowchart showing an example of processing performed by the microcomputer 4.

The operation of this embodiment will be described below with reference to each figure.

Even when the doors are locked and the operator is outside the vehicle, the microcomputer 4 remains operational even when the ignition switch is off, and initial settings such as setting the value N of the internal counter to zero have been made. There is (Sl).

When the operator wants to unlock the door, he first pulls the handle 1 toward himself, turns on the switch 2 for, for example, a few seconds, and inputs the start signal st.

When the microcomputer 4 determines this start signal (S2), it starts the power supply circuit 9 to supply power to the speedometer 11 (S3), and switches the switching circuit 10 to the microcomputer 4 side (S4). Then, the value of the counter N is sent as display information to a specific one-digit number display part of the speedometer 11 via the output ink face 8 and the switching circuit 10, and this is displayed (S5). N is initially zero. Therefore, "0" is displayed. Then, a synchronization process is performed to hold the display contents for a certain period of time, for example, several seconds (S6), and during that time it is determined whether the switch 2 has been turned on for a short time, that is, whether a timing signal has been input (S7). If the timing signal is not input, the contents of N are counted by +1 (515), and N is 10.
Otherwise, immediately return to step S5516),
If N is 10, N is set to O and the process returns to step S5 (517). Also, when the timing signal is input, the value of N at that time is input as the first digit code number (S8).
. In FIG. 2, the first digit timing signal a is not input until N reaches 4, so the speedometer 11 displays "OJ
, rlJ, r2J, r3J, r4J are displayed in sequence, and while "4" is displayed, the first digit timing signal a
is input, so "4" is input as the -th digit code number.

When the code number is input, the microcomputer 4 determines whether or not all the digits of the code number have been input (S9), and if the code number of all the digits has not been input, it sets N to zero (S9).
318), returns to step S5 and repeats the same process.

In Figure 2, after inputting "4", the numbers from "0" to "6" are displayed on the speedometer 11 again, and "6" is displayed on the speedometer 11 again.
Since the second digit timing signal was input while ``6'' was being displayed, this ``6'' was input as the code number, and the numbers from ``0'' to ``2'' were displayed on the speedometer 11 again.
Since the third digit timing signal C was input while "2" was being displayed, this was input as the third digit code number.

Now, when you enter the full digit code number, the microcomputer 4 checks it against the 3-digit code number set on the code number setting dial 7 (510), and if it matches, unlocks the door via the output interface 8. The device 6 is activated to unlock the door (S11). However, if the comparison does not match, the value of the internal counter M is counted up by +1 (512), and when it reaches a predetermined number, for example, 3 (S13).
), an alarm device (not shown) is activated (S14) to prevent theft.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various other additions and changes are possible. For example, you can do the following:

(2) While the switch 2 is on, the display content of the speedometer 11 is counted up or down at predetermined time intervals, and the display content at the time the switch 2 is turned off is input as a code number. According to this embodiment, in the case of a three-digit code number, it is only necessary to turn the switch 2 on and off three times in total.

- A single lamp or light emitting diode is used to display the code number and is placed in a position that can be seen from the outside of the car, and the code number is indicated by the number of times it is turned on. That is, when the switch 2 is turned on for a predetermined period of time, or while the switch 2 is turned on, a lamp or the like may be made to blink at a predetermined time interval, and the number of lighting times at the time when the timing signal is input to the switch 2 may be input as the code number. .

As described in detail, according to the present invention, the display state of the display means is sequentially updated by turning on and off switches by operating the handle of the automobile, so that the operator can adjust the display state to the desired state. When a one-digit code number matches, you can input a one-digit code number by performing a predetermined operation on the switch, such as turning the switch on for a predetermined period of time, or turning it on and then turning it off. When inputting a one-digit code number by the number of times the switch is turned on and off, it is possible to reduce the number of times the comparison switch is turned on and off, thereby simplifying the operation. In addition, there is less wear and tear on the switch.Furthermore, since the code number to be entered can be confirmed by the display state of the display means, input errors are also reduced.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a main part of an embodiment of the present invention, and FIG. 2 shows an example of the on/off state of the switch 2 and temporal changes in the display contents of the speedometer 11 when the embodiment is operated. Diagram, Figure 3 is microcomputer 4
3 is a flowchart illustrating an example of processing performed by. 1 is a handle, 2 is a switch, 4 is a microcomputer,
5 is a door lock part, 6 is a door unlocking device, 7 is a code number setting dial, and 11 is a speedometer.

Claims (1)

[Claims] A switch that is turned on and off by operating a handle on a car;
A display means for sequentially updating a display state when the switch is turned on; a reading means for reading a one-digit code number indicated by a display state of the display means when a predetermined operation is performed on the switch; and the reading means. The present invention is characterized by comprising a collation means for collating a code number of a predetermined number of digits sequentially read by the coder with the contents stored in the code storage unit, and a means for unlocking based on a match with the code number by the collation means. Automotive electronic lock.