JPS62111084A - Automatic door locking releasing device - 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] [Industrial application field] The present invention relates to an automatic door unlocking device.

The automatic door unlocking device according to the present invention is used, for example, in a keyless entry system for entering and exiting a building, or in a keyless entry system for an automobile by being mounted on an automobile.

[Conventional technology]

2. Description of the Related Art A keyless entry system is conventionally known as a system for unlocking a car door without using a key, for example. In this system, a keypad (numeric switch) is installed on the car door, and a locked door is unlocked by inputting a password consisting of a combination of numbers with a finger.

[￥￥ Akama deactivation ＾ Woohisu）a Jump fishing acceptance Since the conventional keyless entry system has a keypad installed on the door, it can be locked by entering a random combination of numbers as a prank etc. There is a risk that the password will be unlocked, which is undesirable from the perspective of preventing theft.

[Means for solving problems]

FIG. 1 is a diagram schematically showing an automatic door unlocking device according to the present invention. In order to solve the above-mentioned problems, an automatic door unlocking device according to the present invention includes a door lock main body device 2 installed on the door side and capable of locking the door, and a door lock main body device 2 that unlocks the main device by optical remote control. A portable controller 2 is provided for this purpose. The controller 1 includes a key input means 1
a, a modulating means 1b for modulating symbol data keyed in by the key inputting means 1a, and an optical transmitting means 1c for converting the modulated output of the modulating means 1b into optical output and transmitting it as a light wave.

The main device 2 includes an optical receiving means 2a that receives light waves and converts them into electrical signals, a demodulating means 2b that demodulates the output signal of the optical receiving means 2a to obtain symbol data, and stores the symbol data demodulated by the demodulating means 2b. an input number storage means 2c for storing a password for unlocking the door, a password storage means 2d for storing a password for unlocking the door in advance, and a match detection means for comparing the key input number of the input number storage means 2C with the password to detect a match. 2e
, and - unlocking means 2f for unlocking the door in response to the match detection by the failure detecting means 2e.

[For production]

A password is input by key input means of the controller and sent to the door lock main unit by light waves. In the main unit, the key-input number is compared with a preset password number, and if the two match, the door is unlocked by the unlocking means.

〔Example〕

Hereinafter, the present invention will be explained in detail using the drawings.

FIG. 2 shows a remote control device 1 for an automatic door unlocking device as an embodiment of the present invention, and FIG. 3 shows a door lock main body device 2. As shown in FIG. The door lock body bag W12 is installed on the door portion and locks and unlocks the door. The remote control bag ffl is used to unlock the door by remotely controlling the door lock main unit 2 from a remote location (for example, within 10 m), and is configured in the form of a W-shaped card (about the size of a name tag) to make it portable. .

In Fig. 2, 10 is an oscillation frequency divider, and as shown in Fig. 4, it has a 38 k flz oscillation output (a) and a frequency-divided output (b) obtained by dividing this oscillation output (a) into l/N. ) are sent to the logic synthesis circuit 15 and timing pulse generator 11, respectively. The timing pulse generator 11 includes a 2-bit ring counter, and sends timing pulses T3''-Tl' for key scanning to the key matrix 12, as shown in FIG. 4(C), and also outputs a 2-bit parallel binary signal. The signal is sent to the logic synthesis circuit 15.

The key matrix 12 has an external configuration as shown as an example in FIG. 5, and the output of the key matrix 12 is input to a key input detection circuit 13. Key input detection circuit 1
3, when the key in key matrix 12 is turned on, 3"
1" is input to γ at ~, and this is sent to the encoder 144. The encoder 14 encodes the signal 3' to 2' on this, converts it into a 3-bit parallel logic signal, and sends it to the logic synthesis circuit 15. send.

For example, when 3'="l", γ is "to"
oooooo", a logic signal of "001" in binary is sent to the logic synthesis circuit 15.

The logic synthesis circuit 15 mixes the 2-bit parallel logic signal as a timing signal from the timing pulse generator 11 and the 3-bit parallel logic signal from the encoder 14 to form 5-bit information, and converts the signal into 5-bit information. send to The parallel/serial conversion circuit 16 is 5
The bit parallel signal is converted into a serial signal that is easy to transmit and sent to the modulation circuit 17.

The modulation circuit 17 uses this serial signal to control the oscillation frequency divider l.
The 38k llz oscillation output from O is modulated and a header 1 is attached as a start bit, and the modulated output turns on and off the transistor 18 and therefore the infrared light emitting diode 19 to lock the door of the modulated wave by the infrared wave. The signal is transmitted to the main device 2. The reason why the modulation is performed at 38 kllz is to enable the transmitted wave to be distinguished from other infrared rays such as sunlight.

In the door lock main unit 2 shown in FIG. 3, infrared waves from the remote control device 1 are detected by an infrared phototransistor 20, amplified by an amplifier 21, passed through a 38k llz bandpass filter 28, and then returned to the original state by a demodulation circuit 22. demodulated into a logic signal. The demodulated signal is sent to the microcomputer 23
The ink face is matched to the TTL level at which the ink face operates and is input to the microcomputer 23.

The microcomputer 23 converts the demodulated signal serially inputted from the demodulation circuit 22 into parallel data, performs signal processing to be described later, and uses the result to drive the drive circuit 24 to operate the electromagnetic hook 25 and lock the door lock mechanism 26. Unlock. FIG. 6 shows the detailed structure of the drive circuit 24 and the solenoid portion of the electromagnetic hook 25. In the figure, drive circuit 24 includes Darlington connection transistors Ql and Q2 and relays RLI and RL2. A lock signal S (
r) is input, and the lock release signal S (u) is input to the transistor Q2, and the lock signal S (r) causes the electromagnetic hook of the door lock mechanism 26 installed in the door portion to open the door. Lock and unlock signal S
The circuit is connected to energize the solenoid L of the electromagnetic hook to release the lock at (u).

Next, the operation of the device of this embodiment will be explained. FIG. 7 is a flowchart showing the processing procedure for registering and verifying a personal identification number performed by the microcomputer 23 in the apparatus shown in FIG.

In FIG. 7, steps 810 to S16 are procedures for registering and re-registering a password in the main body device 2, and the user can freely register this as appropriate. Further, steps 520 to 32B are steps for verifying whether or not the input digits keyed in on the remote control device 1 match a pre-registered password.

First, the password registration operation in the main body device 2 will be explained. In this case, key inputs are performed in the order shown in FIG. 8 using a key matrix provided in the main device 2. That is, first press the memo key, then press N number keys to input the password you wish to register, and finally press the memo key again to complete the registration.

In response to the above-mentioned operation, it is determined in step S3 in the flowchart of FIG. 7 whether or not the device is set to memo mode (that is, whether the memo flag is set to "1"); Since it is not set, the process advances to step S4.

Here, the first memo key input is detected (step S4)
In response, the memo flag is set to "l" to set the memo mode (step S10), the previously registered password is cleared (step 511), and the process returns to the start (step S1).

Since the memo mode is set in the next cycle, the process advances from step S3 to step S12. In this case, the N numbers inputted following the memo key are sequentially stored in the N-digit storage section. That is, the first digit of the storage section is moved to the second digit, the newly inputted number is stored in the IHjth digit (step 513), and the numbers after the second digit are sequentially shifted to the throne digit.

When this procedure is repeated several cycles and N numbers are stored in the storage unit, the memo key is finally pressed again, and it is determined that the input of the PIN number is complete (step 512). . As a result, the numerical data in the storage section is registered as a password (step 515), the memo mode is canceled (the memo flag is set to "O"), and the password registration operation is completed (step 816).

When performing the operation to unlock the door, use the remote control device 1.
As shown in FIG. 9 by the key matrix 12 of
Key-in N numbers that are a predetermined password. Each numerical data is sequentially transmitted from the remote control device 1 to the main device 2 and input into the microcomputer 23. In the microcomputer 23, step S of the flowchart in FIG.
The password is verified against the entered number using the steps from 21 onwards.

That is, when a new number is input, the first digit of the N-digit storage section for storing the input number is moved to the second digit, and the new number is stored in the first digit (step 521). Shift the numbers after the first digit to the higher digits (step 5)
22).

The above-described procedure is repeated several cycles, and it is determined in step S23 whether the Nth number has been input and stored. When the input of N numbers is completed, it is checked whether the input numbers match the pre-registered PIN number or not in step 327.
), if they match, the output is set to unlock the door (step 528).

As a result, the lock release signal S (ul) is output to the drive circuit 24, and the door lock is released.

If you make a mistake while entering your password, press the clear key as shown in Figure 1O. As a result, the input numbers that have already been input are cleared (step S2.520).

Furthermore, if you stop entering your PIN code midway through, all the numbers that have already been entered will be cleared if the interval between key inputs is T seconds or more (steps S24, S25, and 5).
26), you will have to enter it again.

FIG. 11 is a diagram showing another embodiment of the automatic door unlocking device according to the present invention. This embodiment is an example in which the automatic door unlocking device of the present invention is applied to a car door as a keyless entry system for a car. It shows what is made up of. The configuration of the remote control device 1 is the same as the circuit configuration shown in FIG. 2, except that the key matrix is configured as shown in FIG.

In FIG. 11, the door lock main unit 2 includes a phototransistor 20, an amplifier 21, and a microcomputer 23.
, drive circuit 24, electromagnetic hook 25, door lock mechanism 26
, a bandpass filter 28, an interface 27, an internal remote controller 29, and the like. The in-device remote control 29 includes the key matrix shown in FIG. 12, and when the key input is not inputted to the microcomputer 23 via the amplifier 21, the output from the key matrix is directly sent to the microcomputer 23 (signal line indicated by a broken line in the figure). - Input to computer 23.

60 is a door switch generally called a courtesy switch, which outputs a "0" signal when all the doors are closed, and outputs a "1" signal when any door is open.

The radio receiver 3 includes an antenna 30, a high frequency amplifier 31, a local oscillator 32, a phase synchronization circuit 33, a mixer 34, an intermediate frequency amplifier 35, a wave detector 37, a stereo demodulator 37, and the like. Further, the tape deck device 4 has a head 40.
It is configured to include an equalizer 4L amplifier 42, a Dolby circuit 43, a tape deck mechanism 44, and the like. The outputs of the radio receiver 3 and tape deck device 4 are guided to a speaker 52 via a switch 50 and a power amplifier 51. Note that 6 is a display section.

The operation of the apparatus shown in FIG. 11 will be explained below. Figure 13 is the first
FIG. 1 is a flowchart showing the control procedure of the entire system carried out by the microcomputer 23 of the apparatus, and FIG. 14 is the same as the flowchart of FIG. 13. It is a flowchart which shows the procedure of door lock processing.

In FIG. 13, the procedure begins by first turning on the power of the device (step 340), and the states of the memory etc. are initialized (step 541).

Next, it is determined whether or not a key input has been made (step 542), and if a key input has been made, it is determined whether it is a radio key, tape deck key, or door key (steps S43, S45, 547), respectively. Radio control processing, tape deck control processing, or door lock processing is performed in response to key input (steps S44, S
46.548).

In accordance with each of the above-mentioned processes, the display unit 6 displays, for example, the reception frequency during radio control processing, and the password input from the key matrix during door lock processing (step 5).
49), and control signals corresponding to each process are output to the output port of the microcomputer 23.

The procedure for locking the door by pressing the door key will be described with reference to FIG. 14. Remote control device 1
When the door key is pressed, that information is transmitted to the main unit, and the pressing of the door key is detected (step S6).
) When the door switch output is O, that is, when all doors are closed, the door lock output is set (step S51.552). This causes the lock signal S (
rl is output to the drive circuit 24 to lock the door,
Next, the door lock mode is set (the flag is set to l'') (step 529).

In other words, when registering or re-registering the PIN number, by inputting the keys in the order shown in FIG. 15, the same steps S3 and S4 as in FIG. Number registration is completed. In addition, when unlocking is performed by inputting a password and comparing it with a pre-registered password, steps 321 to 31 similar to those in FIG. 7 can be performed by inputting the keys in the order shown in FIG. 16. is performed to complete the unlocking. Note that when the verification of the PIN number and the unlocking are completed, the door lock mode is canceled and the flag is set to "0" (step 531). Also, in the case of an incorrect operation when inputting the PIN number, the door lock mode is canceled as shown in FIG. 17. As in the case of FIG. 10, after making a mistake in input, the door key is pressed again to clear the input digits (step 520), and the correct password is input again.

〔Effect of the invention〕

According to the present invention, in a keyless entry system or the like, it is possible to prevent the keypad or the like from being tampered with and the door being opened, which is useful for preventing theft. Furthermore, when the automatic door unlocking device of the present invention is installed in a car, it is convenient to unlock the door from a distance outdoors, especially on rainy days.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a schematic configuration of an automatic door unlocking device of the present invention, FIG. 2 is a block diagram showing a remote control device for an automatic door unlocking device as an embodiment of the present invention, and FIG. FIG. 4 is a block diagram showing the main unit of an automatic door lock release device as an embodiment of the invention, FIG. 4 is a signal waveform diagram at various points in the device in FIG. 2, FIG. 6 is a diagram showing the drive circuit and electromagnetic hook portion in FIG. 3, FIG. 7 is a flowchart showing the control procedure performed by the microcomputer in FIG. 3,
8 to 10 are diagrams showing the key input sequence during each operation, FIG. 11 is a diagram showing the main unit of an automatic door unlocking device as another embodiment of the present invention, and FIG. 12 is a diagram showing the main unit of an automatic door unlocking device. Figures 13 and 14 are flowcharts showing the processing procedure performed by the microcomputer of the device; Figures 15 to 17 show the order of key inputs during each operation. It is a diagram. 1...Remote control device 2...Door lock main unit la...Key input means 1b...Modulation means lc...
- Optical transmitting means 2a... Optical receiving means 2b... Demodulating means 2C... Key input number means 2d... Password storage means 2e... Match detection means 2r... Lock release means

Claims (1)

[Claims] 1. A door lock main body device installed on the door side and capable of locking the door, and a portable controller for unlocking the main body device by optical remote control, the controller comprises a key input means, a modulation means for modulating the symbol data keyed by the key input means, and an optical transmission means for converting the modulated output of the modulation means into an optical output and transmitting it as a light wave, The main device includes an optical receiving means for receiving the light wave and converting it into an electrical signal, a demodulating means for demodulating the output signal of the optical receiving means to obtain symbol data, and an input for storing the symbol data demodulated by the demodulating means. a number storage means, a password storage means for storing in advance a password for unlocking the door, a match detection means for comparing the key input number of the input number storage means with the password and detecting a match; An automatic door unlocking device comprising an unlocking means for unlocking the door in response to coincidence detection by the coincidence detection means. 2. The automatic door unlocking device according to claim 1, wherein the input number storage means, the password storage means, and the coincidence detection means are constituted by a microcomputer. 3. The automatic door lock release device according to claim 1, wherein the door lock main body device is installed on a door of an automobile. 4. The automatic door unlocking device according to claim 3, wherein the input number storage means, the password storage means, and the coincidence detection means are constituted by a microcomputer installed in an in-vehicle audio device. .