JPS62174476A - Electronic controller of house and car etc. - 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 Industrial Application] The present invention relates to electronic control devices for houses, automobiles, etc.; An electronic control system for houses, automobiles, etc. that outputs a specific code signal to a light-receiving element that has a liir and activates a controller for a controlled part, such as a steering lock or a door lock, when the specific code signal matches a code signal set in advance on the key cylinder side. It is related to the device.

[Conventional technology]

For example, in a conventional radio-controlled lock system, a card-shaped transmitter is carried instead of a key, and the transmitter communicates with a controller installed in the car using radio waves, and a specific code sent from the transmitter is sent to the controller in advance. When the code signal matches the stored code signal, a controller such as a door lock is operated to unlock the door.

[Problem that the invention seeks to solve]

However, the above-mentioned device is easily influenced by external radio waves, and there are problems such as the radio waves being intercepted by a third party and the code being decoded.

SUMMARY OF THE INVENTION In order to eliminate such drawbacks, it is an object of the present invention to make it possible to control door locks and other electronic devices using a specified light code.

Measures for Solving Problems] A key detection switch means for detecting that a key having a key specific code generation means is inserted into the key cylinder, and a key detection switch means arranged at the front part of the key cylinder. a key cylinder device having a light receiving element; a switch device that is turned on when inserted into the key cylinder device; a specific code generating device that outputs a specific code signal when the switch device is turned on; a key having a light-emitting element that is controlled by an output and operates to emit light to output a specific code signal to the light-receiving element; and a code in which a specific code signal from the light-emitting element input by the light-receiving element is set in advance on the key cylinder side. The present invention is characterized in that it is equipped with a specific code discriminating means that outputs a matching signal that operates a controlled section when a matching signal is found.

[For production]

When the key is inserted into the key cylinder device, the light emitting element and the light receiving element face each other, the switch means is turned on on the key side and the specific code signal generating means is activated, and the key detection switch means is turned on on the key cylinder device side. and enters standby mode.

Then, the light emitting element is operated by the specific code signal generating means, and an optical specific code signal is transmitted from the light emitting element to the light receiving element.

The specific code discrimination means compares the specific code signal inputted by the light receiving element with the code signal set in advance on the key cylinder side, and when they match, outputs a matching signal to the controlled section, thereby activating the controlled section.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

1 to 7 show an example of an automobile lock control device of the present invention.

1 to 3 show the structure of a key cylinder device l. A light receiving element (infrared light receiving element) 3 embedded in a condensing crystal 2 is arranged on the key cylinder operation surface 1a,
Further, two magnets 4 are arranged in the diametrical direction. This magnet 4 acts to turn on the switch means 8 of the key 6, as will be described later.

In addition, the key 6 is inserted into the key insertion hole IC in the cylinder part lb.
Detection switch means 5 is provided for detecting that the device is inserted into the device.

4 and 5 show the structure of the key 6. FIG.

The key 6 is of a molded type, and a battery 7 is placed inside the legitimate part 6a.
It is equipped with circuit components such as a switch means (reed switch) 8, a specific code generation means 9, a light emitting element (infrared light emitting diode) 10, a light emitting diode 11, etc. Note that the light emitting element IO and the light emitting diode 11 are arranged in a partially exposed state on the side surface of the legitimate child part 6a on the side of the key brakes 1 and 6b, and the switch means 8 is arranged in a position close to the key plate 6b of the legitimate child part 6a. .

When the key 6 is inserted into the key insertion hole 1b of the key cylinder device 1, the switch means 8 approaches the magnet 4 and turns on, and the light emitting element 10 faces the light receiving element 3.

FIG. 6 shows a circuit diagram of key 1. Reference numeral 12 in the figure is a power switching circuit, which is activated when the switch means 8 is turned on by the magnet 4.

When the power switching circuit I2 operates, the specific code generating means 9 operates to drive the light emitting element 10,
A specific code signal is output (transmitted) from the light emitting element IO.

The specific code generation means 9 includes a reset circuit 13, an oscillation circuit I4, an output circuit 5, a frequency dividing circuit I6, and a specific code RO.
M17, output control circuit 18, and pulse counter 1
It consists of 9.

When the power supply switching circuit 12 operates, the reset circuit 13 operates and initializes the data in the specific code ROM 17, while the oscillation circuit 14 operates and generates 30 to 50 KIl.
The carrier rectangular wave signal of z is output to the output circuit 15 and the frequency dividing circuit 16.

The output circuit 15 operates the light emitting element 10 based on the input carrier rectangular wave signal. On the other hand, the frequency dividing circuit 16 divides the input carrier rectangular wave signal into several stages (1/16 to 1/32) L,
The frequency-divided signal is output to the specific code ROM 17. The specific code ROM 17 is operated by the frequency-divided signal to output a preset serial pulse train specific code signal, and pulses the operation signal output from the output circuit 15 to the light emitting element 10 via the output controller 18 with the specific code repetition signal. Modulate. At this time, the light emitting diode 11 lights up to indicate that the specific code signal is being output from the light emitting element 10.

Further, the output of the specific code ROM 17 is input to the pulse counter 19. When the pulse counter 19 counts the specific code repetition signal 0 times, it outputs a signal to the power switching circuit 12.

The power supply switching circuit (2) thereby stops operating.

FIG. 7 shows a circuit diagram of the specific code discrimination means 20.

The specific code discrimination circuit 20 operates when the detection switch means 5 detects the key 6, that is, when the key 6 is inserted into the key insertion hole 1.
switching power supply circuit 21 that operates when inserted into c.
, a tuning circuit 22 , a carrier amplification circuit 23 , a detection circuit 24 , and a discrimination circuit 25 .

When the detection switch means 5 is turned on, the switching power supply circuit 21 sets the reception circuit portion (tuning circuit 22, carrier amplification circuit 23, and detection circuit 24) to a standby state, and in this state, a specific code signal is output from the light emitting element 10. Then, the light receiving element 3 inputs this specific code signal, which is amplified and detected by the tuning circuit 22, carrier amplification circuit 23, and detection circuit 24, and outputted to the discrimination circuit 25.

The discrimination circuit 25 compares the input specific code signal with a code signal preset on the key cylinder side, and if the specific code signal matches this code signal, a matching signal (summer level pulse signal for a certain period of time) is transmitted to the controlled section. Output to 26.

In the above embodiment, one light emitting element 10 is arranged, but in the reversible key, two light emitting elements 10 are arranged as shown in FIG.

Further, as shown in FIG. 9, a key 6 is attached to the key cylinder device 1.
It is also possible to use a switch 8 that is turned on only while the holder is being inserted. In this case, the operating rod 8a of the switch 8 is pressed by the key cylinder operation surface 1a of the key cylinder device 1 and turned on.

In the present invention, the light emitting element is provided on the key side, but it is technically easy to provide the light receiving element on the key side and the light emitting element on the key cylinder side.

〔Effect of the invention〕

As explained above, according to the present invention, (1) Since light is used, there is no interference from external radio waves or external magnetism.

(2) Since the specific code signal is output (transmitted) when the key is inserted into the key cylinder device, there is no risk that the specific code signal will be intercepted by a third party.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a sectional view of a key cylinder device, FIGS. 2 and 3 are perspective views of the key cylinder device, and FIGS. 4 and 5 are internal views of the key. 6 is a block diagram showing the key side circuit, FIG. 7 is a block diagram showing the specific code discrimination circuit, and FIGS. 8 and 9 are cross-sectional views showing the structure.
The figure is a side view showing another embodiment of the key. 1... Key cylinder device, 3... Light receiving element, 5...
・Detection switch means, 8...Switch means, 9...
Specific code generating means, 10... Light emitting element, 20...
Specific code determination means, 26... controlled unit. Patent applicant: Kokusan Metal Industry Co., Ltd. Figure 1 Figure 3 h O Figure 4

Claims (1)

[Scope of Claims] A key detection switch means for detecting that a key having a key specific code generation means is inserted into a key cylinder, and a light receiving element arranged in the front part of the key cylinder and the detection switch means. a key cylinder device having a key cylinder device; a switch device that is turned on when inserted into the key cylinder device; a specific code generating device that outputs a specific code signal when the switch device is turned on; and a key cylinder device that is controlled by the output of the specific code generating device. and a key having a light-emitting element that emits light and outputs a specific code signal to the light-receiving element; and the light-receiving element compares the input specific code signal from the light-emitting element with a code signal set in advance on the key cylinder side. 1. An electronic control device for a house, a car, etc., comprising: specific code discrimination means for outputting a matching signal that activates a controlled section when a match occurs.