JPH01269392A - Electronic key device - Google Patents

Abstract

PURPOSE:To decrease a malfunction and to facilitate handling by composing the title device of a key open/close device consisting of a transmitter to transmit an encoded signal incorporated in an electronic wrist watch and a receiver to be fitted near the door handle of a vehicle and to decode the transmitted signal. CONSTITUTION:A door open/close signal oscillator is incorporated in the normal digital wrist watch, and when a mode change-over switch 1 is pushed, a door open/close code inputted beforehand is transmitted as an acoustic wave or a ultrasonic wave from an oscillating speaker 6 through change-over switches 2, 3 and 4. The transmitted acoustic wave or ultrasonic wave is inputted to a microphone 10, and made into a direct current voltage signal through an amplifier 11, a filter 12, detecting/waveform shaping circuit 13. When the direct current voltage signal continues for a prescribed time, a current activating circuit 15 supplies a power source to a code decoding microcomputer 14, activates a program, when the code conforms to the one set beforehand, a door open signal or a close signal is outputted from a door lock position switch 17 to an actuator 16, and locks or unlocks the door.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electronic key device, and more particularly to an electronic key device that remotely controls locking and unlocking of an automobile door.

[Conventional technology]

As this type of device, some electronic key devices with remote control using infrared rays, radio waves, etc. have been commercialized for use in automobiles.

[Problem to be solved by the invention]

Among the above-mentioned conventional technologies, the infrared method requires the light-receiving sensor to be placed in a clearly visible position inside and outside the vehicle, which imposes restrictions on the exterior design and requires measures against dirt when it is installed outside the vehicle.

Further, in the case of a radio wave type, although there is no such problem, due to its nature, the system 11 is often complicated and expensive due to countermeasures against interference and noise. Furthermore, both systems required separate transmitters.

An object of the present invention is to provide a remote control, control, and roll type electronic key device that has excellent interference resistance and noise characteristics by transmitting sonic waves or ultrasonic waves from a transmitter incorporated in an electronic wrist timetable. Become.

[Means to solve the problem]

The second problem is to manually input the I-A opening/closing command, code input means to input the l'A opening/closing code corresponding to the I-A opening/closing command, and manually inputting the I-A opening/closing command. an electronic arm timetable comprising a signal output means for outputting a 1A opening/closing signal based on the door opening/closing signal 1-, and a wave generation means for inputting the 11A opening/closing signal and generating a sound wave or an ultrasonic wave; A signal detecting means for inputting the sound wave or ultrasonic wave and detecting the +<A opening/closing signal as a demodulated signal, a power supply starting circuit supplying a power supply voltage based on the demodulated I/I, and setting the opening/closing code to the 1. a door open/closed state detection means for detecting whether the door is in an open state or a closed state and outputting an open/closed state signal; and compares the demodulated signal with the door opening/closing signal 1 to determine that it is the 1-A opening/closing signal, and outputs a door opening or closing signal in response to the door opening/closing state signal. and a key actuator that is disposed on a key of the vehicle and opens or closes the key based on the door open or close signal. .

〔Example〕

An embodiment of the present invention will be described using FIGS. 1 to 4.

FIG. 1 shows a block diagram of a door opening/closing signal transmitting device incorporated in an electronic wristwatch.

This door opening/closing signal transmitting device operates on the mote changeover switch as a command input means for inputting the opening/closing command of 1-A, and on the normal court input means as the first court input means for inputting the opening/closing code of 1-A corresponding to the door opening/closing command. setting the time on a clock;
For special training purposes, it is possible to switch modes such as alarms and stopwatches, and to change the star 1 and stop of the watch to S1, and also to switch to L/A open/close coat setting mode with changeover switch 1, and to change 1A open/close coat 1- arbitrarily. A changeover switch 2゜3.4, a clock and door opening/closing signal generating microcomputer 5 which also performs wristwatch control as signal output means for inputting door opening/closing commands and outputting door opening/closing signals based on door opening/closing codes, and a door opening/closing signal generation microcomputer 5. It is composed of a transmitting speaker 6 as a wave generating means for generating input sound waves or ultrasonic waves, a clock display 7, a display illumination lamp 8, and a lamp lighting switch 9.

FIG. 2 shows a block diagram of a controller that receives sound waves or ultrasonic waves modulated by a door opening/closing signal and outputs a door opening/closing signal to an actuator. The controller is
1-A microphone 10 that receives a sound wave or ultrasonic wave from the opening/closing signal transmitting device; an amplifier 11 that amplifies the received sound wave or ultrasonic wave; and a sonic wave or ultrasonic wave in a predetermined band from the output of the amplifier 11. A signal detection means is composed of a filter 12 that allows the door opening/closing signal to pass through, and a detection/waveform shaping circuit 13 that detects the door opening/closing signal from the output of the filter 12 and shapes the waveform, and the door opening/closing signal from the detection/waveform shaping circuit 13 is transmitted for a certain period of time. A power supply starting circuit 15 that supplies power when the door is open continuously, a mechanical IP switch, an electrical RAM, etc., and a hair code setting means 18 that sets whether the door is open or not. It is activated by a door lock position switch 17 as a door open/closed state detection means that detects whether the door is in the closed state by a key actuator 16 (described later) and outputs a door open/closed state signal, and by supplying power from the power supply starting circuit 15. The door opening/closing signal inputted from [detection/waveform shaping circuit] 3 is input to the opening/closing code set by
(Based on the open/close code and the door open/close status signal from the door lock position switch 17, the code 1 determines that it is a door open/close signal from the wristwatch and outputs the door open/close signal.) The outputs of the code 1 to the decoding microcomputer 14 are input to the key actuator 16, which opens and closes the key.

FIG. 3 is a diagram showing a door handle of an automobile and a microphone provided inside the door handle.

I-Ahantor]-9 is attached to the door panel 20 in four parts. A receiving hole 21 is provided in each of the brackets 1 to 20, and a bracket 1-23 having an opening at a position corresponding to the receiving hole 21 is installed inside the receiving hole 21, and a microphone is installed at a position corresponding to the receiving hole 2 of the bracket 23. 10
Fix with screws 22.

Figure 4 shows an example of a door opening/closing court. The range of t□ is the header part, the range of t2 is the marker bit part, and the range of t3 is the code I part.

Next, the operation will be explained.

A door opening/closing signal transmitting device as shown in FIG. 1 is built into a normal digital wristwatch.
3.4, the opening/closing coats 1 to 1A input in advance are transmitted as sound waves or ultrasonic waves according to the formats 1 to 1 shown in FIG. The user puts this wristwatch on his or her wrist and brings it close to the lower part of the door pans 1 to 9 shown in FIG. 3, and presses the mote changeover switch 1 to transmit sound waves or ultrasonic waves.

Then, the emitted sound waves or ultrasonic waves are input to the microphone shown in FIG.
Only a predetermined band passes through the filter 12 which is amplified by 1, and the detection/waveform shaping circuit 13 detects the 1-A open/close signal and shapes the waveform into a DC voltage signal. Power supply starting circuit 15
When this DC voltage signal continues for a predetermined period of time, power is supplied to the code decoding microcomputer 14 and the program is activated. Since the DC voltage signal is sent to the microcomputer 14 for decoding code I in the format shown in FIG. If it matches the preset value, 1
~ Based on the current door open/close signal from the lock position switch 17, a door open or close signal is output to the key actuator 16, and the key actuator 16 operates based on this signal to lock or unlock the door. conduct.

In FIG. 4, t□ is set to a slightly longer time, so that the code decoding microcomputer 14 will not malfunction due to noise in the natural world. Further, even if this microcomputer]-4 is activated, if the codes in the t3 section do not match, the microcomputer 14 will not output any output, so malfunctions due to noise can be prevented.

In addition, in order to completely prevent malfunctions caused by this noise, the signal sent from the watch is a composite sound of multiple 1 to -.
Multiple amplifiers and filters are installed on the receiving side as well.
The outputs of the respective amplifiers may be ANDed and the power supply starting circuit 15 may be operated based on the output.

Further, the microphone 10 shown in FIG. 3 is installed as far back as possible on the back side of the door handle 19 in order to block out external noise as much as possible and protect it from rain, mud, etc.

Note that the present invention is applicable not only to automobiles but also to 1-allocations such as houses.

18 = [Effects of the Invention] According to the present invention, a transmitter that transmits a coded signal is incorporated into an electronic watch R, and a transmitter is installed near the door handle of the vehicle to decipher the transmitted signal. By using the key opening/closing device including the receiver, it is possible to provide a remote control type electronic key device that is less likely to malfunction and is easy to handle.

[Brief explanation of the drawing]

Figure 1 is a block diagram of the J-A opening/closing signal transmitter, Figure 2 is a block diagram of the controller that decodes the I/A opening/closing signal and outputs a door open or close signal, and Figure 3 is a block diagram of the J-A opening/closing signal transmitter. FIG. 4 is a diagram showing the state in which the signal receiving section is installed, and FIG. mode selector switch, 2, 3.4-hour H selector switch, 5-clock and 1-A open/close signal generation microcomputer, 6
Transmission speaker, 10...Microphone, 11 Amplifier, 12 Filter, 13 Detection/waveform shaping circuit, 1
4 Microcomputer for code decoding, 15 Power start circuit, code
6. Key actuator, 17.. Door lock position switch, 18.. Door code setting means, 19..
・Door handle, 20 door panel, 21...receiving hole.

Claims (1)

[Scope of Claims] 1. A command input means for inputting a door opening/closing command, a code inputting means for inputting a door opening/closing code corresponding to the door opening/closing command, and a code inputting means for inputting the door opening/closing command and based on the door opening/closing code. an electronic wristwatch comprising: a signal output means for outputting a door opening/closing signal; a wave generating means for inputting the door opening/closing signal and generating a sound wave or an ultrasonic wave; A signal detection means for detecting a signal, a power supply starting circuit for supplying a power supply voltage based on the demodulated signal, a code setting means for setting the door opening/closing code, and detecting whether the door is in an open state or a closed state. a door open/close state detection means that outputs a door open/close state signal; and a door open/close state detection means that is activated by the supply of the power supply voltage and compares the demodulated signal with the door open/close code to determine that it is the door open/close signal. , said door open/
A controller comprising: a determining means for outputting a door open or close signal in response to a closed state signal; and a controller disposed on a key of a door of a vehicle, the controller opening or closing the key based on the door open or close signal. An electronic key device comprising: a key actuator;