JPH089924B2 - Optical vehicle start control device - Google Patents

Description

Description: FIELD OF THE INVENTION This invention relates to electronic control systems, and more particularly to optical vehicle start control systems that use a split light beam to operate a vehicle start system.

Prior Art For example, as shown in JP-A-62-173354,
An antitheft device having an ignition key for generating an optical signal including a predetermined code signal and a specific code discriminating means for generating a coincidence signal when receiving an optical signal emitted from the ignition key is known. This anti-theft device has a picking signal output means, and when it is unlocked without generating the coincidence signal of the specific code discrimination means, it is judged as an illegal unlock and the alarm device is activated. However, when the optical signal emitted from the ignition key is received and unlocked in the state where the coincidence signal is generated from the specific code discriminating means,
Alarm device is not activated.

Further, in JP-A-62-174476, an ignition key for generating an optical signal containing a predetermined code signal and a coincidence signal for receiving an optical signal provided in a lock device and emitted from the ignition key are generated. There is disclosed an electronic control device for a house, an automobile, or the like, which has a specific code determining means and a controlled part operated by a coincidence signal of the specific code determining means. In this electronic control unit, the battery, the switch means, the power supply switching circuit connected to the battery and the switch means, the specific code generating means operated by the output of the power supply switching circuit, and the specific code by the output of the specific code generating means. And a light-emitting element that generates an optical signal. The optical signal emitted from the light emitting element is received by the light receiving element connected to the specific code discriminating means. The specific code determining means sends an output to the controlled unit when the signal received by the light receiving element and the preset code signal match.

Further, as shown in Japanese Patent Publication No. 56-11032, there is known a lock device including a lock mechanism that operates a lock portion by electric means and an ignition key mechanism equipped with a transmitter. Each of the lock mechanism and the ignition key mechanism is provided with a pulse pattern generator that generates a specific pulse train in synchronization with a clock signal generated by a predetermined number with time from an oscillator of the ignition key mechanism. The lock mechanism and the ignition key mechanism are connected to each other by the light transmitting means, and when the pulse trains of both are time-wise coincident with each other, the locking portion of the lock mechanism is unlocked.

As disclosed in Japanese Examined Patent Publication No. 63-11509, a control device for a vehicle lock, which includes a transmitter independent of the automobile and a receiver mounted on the automobile, is known. The transmitter includes a DC power supply, an oscillator that oscillates a message, and a transmitter that remotely transmits the message in series. Also,
The reception unit compares the power supply device, the reception device that receives the message, the storage device that stores only one encoded message, and the received message with the message stored in the storage device. A comparator for generating two signals. The transmitter of the transmitter has a diode for emitting infrared rays, and the receiver of the receiver has a light receiving diode.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention By the way, the conventional optical transmission device includes various complicated electronic circuits such as a battery, a transmission circuit, a code signal generation circuit, and a light emitting device. Therefore, it is difficult to mount these electronic circuits on a small ignition key. Further, there is a drawback that the number of manufacturing steps of the optical electronic control device is large and the manufacturing cost is high. Furthermore, in the conventional optical electronic control unit, a new optical code signal is appropriately stored,
The code signal could not be changed.

An object of the present invention is to provide an optical electronic control device which is attached to a steering lock device of an automobile and can control a starting device of the automobile and can be manufactured in a small size and at a low cost.

Means for Solving the Problems An optical vehicle start control device according to the present invention is provided with a light emitting element (22), a light emitting element (22), a light guiding member (13), and a light guiding member (13). Comparison that generates a coincidence signal when the output of a plurality of light receiving sensors (14 to 17) that selectively receives light divided into a plurality of light beams inside and a predetermined light receiving sensor (14 to 17) is received A starting control circuit (18) having means is provided. The comparison means of the start control circuit (18) activates the controlled device when the coincidence signal is generated. In this optical electronic control device, the light guide member (13) is fixed in the head portion (24) adjacent to the key blade (23) of the ignition key (12). A pair of light emitting elements (22) are attached to both sides of the key insertion portion (20) of the steering lock device and facing each other in the thickness direction. Also,
A plurality of light receiving sensors (14 to 17) are mounted on both sides of the key insertion portion (20) of the steering lock device and in the width direction thereof. When the ignition key (12) inserted in the key cylinder (25) of the steering lock device is rotated from the locked position to the unlocked position, the trigger switch (55) is turned on and the light emitting element (22) is turned on. .
The comparison means generates a coincidence signal to the vehicle starter when a light beam passing through the light guide member (13) is applied to a predetermined light receiving sensor (14-17).

In the embodiment of the present invention, when one of the pair of light emitting elements (22) is turned on and the light receiving sensor (14 to 17) does not receive the light beam, the other light emitting element (22) is turned on. The code registration means provided in the starting control circuit (18) stores the code number received by the light receiving sensors (14-17) when the switching means (78) connected to the starting control circuit (18) is turned on.

Insert the working ignition key (12) into the key cylinder (25) of the steering lock device and rotate the key cylinder (25) from the locked position to the unlocked position.
When the steering lock device is mechanically unlocked, the trigger switch (55) is turned on and the light emitting element (22) is turned on. The light emitted from the light emitting element (22) is divided into a plurality of light beams within the light guide member (13) attached to the ignition key (12), and a plurality of light receiving sensors (14 to The light is selectively received by 17). The signal obtained from the light receiving sensors (14 to 17) is electrically judged by the comparison means whether or not it is a predetermined signal, and when it is a predetermined signal, the vehicle starter (19) is operated.

EXAMPLE An example of an optical electronic control device according to the present invention will be described below with reference to FIGS.

First, as shown in FIG. 1, an optical vehicle start control device 10 according to the present invention includes two light emitting devices 11 and an ignition key 12 (FIG. 5) illuminated by each light emitting device 11.
Generates a coincidence signal when the outputs of the four light receiving sensors 14 to 17 and the predetermined light receiving sensors 14 to 17 that selectively receive the light divided into the plurality of light beams in the light guiding member 13 are received. And a starter interrupt relay 19 as an automobile starting device which is operated by a coincidence signal from the start control circuit 18. 4 photo sensors
Two of 14 to 17 are attached to both sides of the key insertion portion 20, in the width direction thereof, and at a constant angle interval with respect to the light emitting element 22.

As shown in FIGS. 2 and 3, the light emitting device 11 includes a substrate 21 arranged adjacent to the key insertion portion 20 of the steering lock device, and a pair of infrared rays arranged opposite to the key insertion portion 20. A pair of light emitting elements composed of light emitting diodes
22 and. The light emitting elements 22 are attached on both sides of the key insertion portion 20 and facing each other in the thickness direction thereof. Further, as shown in FIG. 4, the light receiving sensors 14 to 17 are arranged in a line at positions 90 degrees apart from the light emitting element 22. The ignition key 12 includes a metal key blade 23 and a key blade 23.
Head part 24 made of resin formed on one end of the
And a light guide member 13 provided therein. The key blade 23 of the ignition key 12 is a key cylinder 25 of the steering lock device when unlocked as shown in FIGS. 2 and 3.
Is inserted into.

As shown in FIG. 6, the light guide member 13 is made of a light transmissive resin such as silicon resin or acrylic resin.
The light receiving unit 30 is formed at one end of the light guide 13, the light guide unit 31 is branched into four from the light receiving unit 30, and the four light emitting units 32 are formed at the other end of each light guide unit 31. The light receiving part 30 is a key blade 23
The light of the light emitting element 22 is received by being exposed from the head portion 24 on one side of the. The current car ignition key has an angle of 180
A reversible ignition key that can be unlocked even if it is inserted into the key cylinder 25 in a rotated state is often used. Therefore, the ignition key 12 is separated by 180 degrees so that the infrared light emitted from the light receiving section 30 can be received even if the ignition key 12 is rotated by 180 degrees from the state shown in FIG. 3 and inserted into the key cylinder 25. A pair of light emitting elements 22 is provided at the position.

The light guide portion 31 of the light guide member 13 passes through the head portion 24 and
The light received from 30 is split into multiple light beams,
Transmit the light beam to 32. Each end face of the light emitting part 32 is a head part
Exposed from straight edges 26 of 24. When the ignition key 12 is inserted into the key cylinder 25 of the steering lock device and rotated from the lock position to the start position, the infrared light emitted from the light emitting element 22 at the start position is the light receiving portion 30 of the light guide member 13. Through the light guide section 31 to the light emitting section 32
Reach Infrared light emitted from the light emitting unit 22 to the outside of the light guide member 13 is received by the light receiving sensors 14 to 17. In the illustrated example, the light guide portion 31 of the light guide member 13 is divided into four, and four light emitting portions are provided.
Although 32 is provided, some of the four light emitting parts 32 are selectively disconnected and a key code is set. That is, an optical key code is set depending on the presence / absence of infrared light to the light receiving sensors 14-17.

As shown in FIG. 1, the power supply positive side terminal 40 connected to the positive side terminal of the battery (not shown) is connected to the emitter of the transistor 43 via the diode 41 and the resistor 42.
The collector of the transistor 43 is connected to the reset terminal R of the start control circuit 18 via the reset circuit 44. Power supply negative terminal 46 and transistor connected to battery negative terminal
A constant voltage diode 47 is connected between the emitter of 43. A resistor 48 having one end connected to the capacitor 45 of the reset circuit 44 and the other end of the capacitor 53 are connected to the power supply negative side terminal 46. A resistor 50, a capacitor 51 and a diode 52 are connected in parallel between the capacitor 45 and the reset terminal R and between the power source negative side terminal 46. The capacitor 45 and the resistor 50 form a pulse shaping circuit and apply a pulse signal to the reset terminal R.

The trigger switch 55 shown in FIG. 1 constitutes an ignition switch or a starter switch (not shown). Current is supplied to the base of the transistor 58 through the resistors 56 and 57 when the ignition switch or the starter switch is turned on. A constant voltage diode 59 is connected between the resistors 56 and 57. The emitter of the transistor 58 is grounded, and the collector is connected to the base of the transistor 43 via the resistor 60. The base of the transistor 43 is connected to the collector of the transistor 69. Transistor 69
The base of is connected to the output port O ₁ of the start control circuit 18,
The emitter is grounded. Further, the collector of the transistor 58 is connected to the input port I ₆ of the start control circuit 18. When the transistor 58 is turned on, the input port I ₆ becomes a low voltage level, and the start control circuit 18 is switched from the standby mode to the operation mode for a certain period of time by the built-in timer means. In the operating mode, the timer means produces an output from the output port O ₁ and turns on the transistor 69 after a certain period of time. Therefore, the transistor 43
The base potential of the transistor drops, and the transistor 43 is turned off. Therefore, the start control circuit 18 is switched from the operation mode to the standby mode.

Light receiving sensors 14-17 are start control circuit via resistors 61-64.
Connected to 18 input ports I _{1 to} I ₄ . Also, the light receiving sensor
Each of 14 to 17 is connected to the collector of the transistor 43, and between the resistors 61 to 64 and the light receiving sensors 14 to 17 there is a resistor 65 to 65.
The collector of the transistor 43 is connected via 68. Further, the collector of the transistor 43 is connected to the input port I ₅ for power supply of the start control circuit 18 via the diode 90.

The light emitting element 22 is connected to the output ports O ₂ and O ₃ of the starting control circuit 18 via two amplifiers 70, 71 and 72, 73, respectively. A starter interrupt relay 19 is connected to the output port O ₄ via two amplifiers 74 and 75. Furthermore, ports P _{1 to} P ₄ are connected to ports P _{5 to} P ₈ of a ROM (read only memory) 77. Light receiving sensor 14 in ROM77
The same information as the 4-bit code signal received from -17 is stored. The input terminals I _{8 to} I ₁₀ of the ROM 77 are connected to the collector of the transistor 43, and the input terminal I _{11 of the} ROM 77 is connected to the power supply negative side terminal 46. Input port of start control circuit 18
I ₇ is connected to the power supply negative side terminal 46 via the code registration switch 78, and is also connected to the collector of the transistor 43 via the resistor 79. In FIG. 1, A and B are A
And terminals connected to B.

Although not shown, the start control circuit 18 configured as a one-chip microcomputer receives the timer signal, the code registering means, the code signal stored in the code registering means, and the outputs of the light receiving sensors 14 to 17 to match them. And a comparing means for generating a coincidence signal in the case of doing so. The starter interrupt relay 19 as a vehicle starting device is operated by the coincidence signal of the comparing means of the starting control circuit 18. When the transistor 58 is turned on and an input signal is given to the input port I ₆ , the timer means switches the start control circuit 18 from the standby mode to the operation mode for a certain period of time, and automatically switches from the operation mode to the standby mode after the certain period of time. There is a function to switch to each other. The code registration means has a function of storing the code numbers received from the light receiving sensors 14 to 17 when the code registration switch 78 is on. The code registration switch 78 is a switching means for switching the code registration means between the reading mode and the writing mode. The code registration means supplies the code signal to the comparison means in the reading mode, and stores the new code signal received by the light receiving sensors 14 to 17 in the writing mode.

The operation of the optical vehicle start control device according to the present invention having the above-described structure will be described based on the operation sequence of FIG.

When the ignition key 12 is inserted into the key cylinder 25 of the steering lock device and rotated from the lock position to the start position, the mechanical lock mechanism (not shown) of the steering lock device is unlocked. When the ignition key 12 is rotated to the start position, the trigger switch 55 is turned on (step 80 in FIG. 7). At this time, the transistor 58
Is turned on, the trigger signal is supplied to the input port I ₆ of the start control circuit 18, and the transistor 43 is turned on. Accordingly, the start control circuit 18 is reset through the reset circuit 44.
A reset signal is supplied to the reset terminal R of, and the start control circuit 18 is reset. When the trigger signal is supplied to the input port I ₆ , the timer means of the start control circuit 18 is activated. Therefore, the start control circuit 18 is switched from the standby mode to the operation mode for a certain period of time, and one light emitting element 22 of the light emitting device 11 is turned on (step 81).

At this time, since the ignition key 12 is rotated to the start position, the infrared light of the light emitting element 22 enters from the light receiving section 30 of the light guide member 13 and is emitted from the light emitting section 32 to the outside. In this state, the infrared light emitted from the light emitting section 32 is the light receiving sensor.
Light is received at 14-17. However, in step 82, when the light receiving sensors 14 to 17 do not receive infrared rays, it is determined that the ignition key 12 is a reversible ignition key. The reversible ignition key is
Since 30 is displaced by an angle of 180 degrees, the other light emitting element 22 of the light emitting device 11 is turned on (step 83). Start control circuit 18
Further, when there is no input from the light receiving sensors 14 to 17, it is determined in step 84 that the ignition key is a different kind of ignition key, and the process returns to the start.

When there is an input to any of the light receiving sensors 14 to 17 in step 82 or 84, in step 85 the start control circuit 18
Determines whether the code registration means is in the writing mode. That is, when the code registration switch 78 is ON or OFF, the start control circuit 18 determines that the writing mode or the reading mode is set. For example, when the code registration switch 78 is off and in the reading mode, proceed to step 86,
It is determined whether the signals input from the light receiving sensors 14 to 17 are the same as the information stored in the ROM 77. If they are the same, the process proceeds from step 86 to 87, and the start control circuit 18 outputs the starter interrupt relay 19 from the output port O ₄ via the amplifiers 74 and 75.
The output which is a coincidence signal is sent to. Therefore, the starter interrupt relay 19 is turned on, and the starter motor (not shown) of the automobile can be operated to start the engine. However, in step 86, the light receiving sensor 14
When it is determined that the signal input from the CPU 17 is not the same as the information stored in the ROM 77, the start port motor cannot be operated because the coincidence signal is not generated from the output port O ₄ .

After that, when a certain time has elapsed by the timer means, an output is generated from the output port O ₁ and the transistor 69 is turned on, so that the transistor 43 is turned off and the start control circuit 18 is switched from the operation mode to the standby mode.

In step 85, when the code registration switch 78 is on and in the writing mode, the signals received from the light receiving sensors 14 to 17 are RAMs forming the code registration means of the start control circuit 18.
(Random access memory) or stored in a writable ROM 77, after which the newly stored information is compared with the signals received from the light receiving sensors 14-17.

 In this embodiment, the following effects can be obtained.

It is not necessary to provide the ignition key 12 with a power source such as a battery, so that the ignition key 12 side does not have a failure due to power failure.

It is possible to rotate the mechanical ignition key 12 to the on-lock position and start the vehicle only after the output from the comparison means of the electronic start control circuit 18 is generated, so that the anti-theft effect can be improved. I will.

When the ignition key 12 is rotated in the unlock direction, the light emitting element (22) is turned on, so that power can be saved.

Since no electronic parts are mounted on the ignition key 12, even if the ignition key (12) is deformed or impacted, there are few failures.

It is not necessary to provide a complicated transmitter in the ignition key 12, and a small and inexpensive starting control device can be obtained.

In the above-described embodiment, when a light emitting diode that emits infrared rays in the invisible region is used, it is not possible to determine which light emitting portion 32 emits light among the plurality of light emitting portions 32. Therefore, it can be said that the antitheft effect is high in this respect. However, instead of infrared light in the invisible region, it is possible to use a light emitting diode that emits normal visible light.

Further, the starter interrupt relay is shown as the vehicle starting device, but the invention is not limited to this, and it can be used as a switching element such as a transistor for controlling various devices such as an electrically operated lock device and a fuel supply control device. Is.

EFFECTS OF THE INVENTION As described above, according to the present invention, since it is not necessary to provide a complicated transmitter in the ignition key, a compact and inexpensive optical vehicle start control device can be obtained.

[Brief description of drawings]

FIG. 1 is an electronic circuit diagram of an optical vehicle start control device according to the present invention, FIG. 2 is a partial sectional view showing a state in which an ignition key is inserted into a steering lock device, and FIG. 3 is 90 ° with respect to FIG. 4 is a partial cross-sectional view in a state of being shifted by an angle, FIG. 4 is a cross-sectional view taken along the line AA of FIG. 2, FIG. 5 is a perspective view of an ignition key, and FIG. 6 is a front view of a light guide member. FIG. 7 is a flow chart showing the operation sequence of the control circuit shown in FIG. 11 ... Light emitting device, 12 ... Ignition key, 13 ... Light guide member, 14-17 ... Light receiving sensor, 18 ... Start control circuit,
19 …… Starter interrupt relay (automobile starting device), 20 …… Key insertion part, 22 …… Light emitting element, 23 …… Key blade, 24 …… Head part, 25 …… Key cylinder, 55…
… Trigger switch, 77 …… ROM (code registration means), 78
...... Code registration switch (switching means)

Claims (3)

[Claims] 1. A light-emitting element (22) and a light-guiding member (13) which is irradiated from the light-emitting element (22) and passes through the light-guiding member (13).
A plurality of light receiving sensors (14 to 17) for selectively receiving the light divided into a plurality of light beams, and a predetermined light receiving sensor (14
~ 17) is provided with a start control circuit (18) having a comparison means for generating a coincidence signal, and when the comparison means of the start control circuit (18) generates a coincidence signal, the controlled device outputs. In the operated optical electronic control unit, the light guide member (13) is fixed in the head section (24) adjacent to the key blade (23) of the ignition key (12), and the key insertion section ( A pair of light emitting elements (22) are attached on both sides of the steering wheel lock device (20) so as to face each other in the thickness direction, and a plurality of light receiving sensors (14-17 ) Is attached and the ignition key (12) inserted in the key cylinder (25) of the steering lock device is rotated from the locked position to the unlocked position, the trigger switch (5
5) is turned on to turn on the light emitting element (22), and the comparing means is a vehicle starting device when the light beam passing through the light guide member (13) is applied to a predetermined light receiving sensor (14 to 17). An optical vehicle start control device characterized by generating a coincidence signal to 2. The light emitting element (22) is turned on when one of the pair of light emitting elements (22) is turned on and the light receiving sensor (14 to 17) does not receive a light beam. An optical vehicle start control device as described. 3. The code registration means provided in the start control circuit (18) is a code number received by the light receiving sensors (14-17) when the switching means (78) connected to the start control circuit (18) is turned on. The optical vehicle start control device according to claim 1, wherein