JP3472665B2 - Engine start and anti-theft device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to an engine starting and anti-theft apparatus, and more particularly to an engine starting and starting and stopping an engine by remote control and setting and releasing an anti-theft system. And an anti-theft device. 2. Description of the Related Art In recent years, engine start and anti-theft devices having both an engine start function for starting an automobile engine by remote control and an anti-theft function for setting an anti-theft system in the automobile have been put into practical use. Such an engine starting and anti-theft device generally includes a transmitter carried by the user of the automobile and a main body attached to the automobile, and a weak radio wave transmitted from the transmitter sets the engine starting or anti-theft system on the main body. Is instructed. FIG. 4 is an external view of a transmitter of a conventional engine starting and anti-theft device. The antenna 30 sends a signal for instructing the start of the engine or the setting of the anti-theft system to the main body. FIG.
In addition, the user inputs an instruction to be sent to the main body by using the anti-theft button 31.
And the start button 32. Both the anti-theft button and the start button 32 are slide switches, and are turned on and off by sliding up and down.
It is possible to switch. The anti-theft button 31 sets and resets the anti-theft system by turning on and off the slide switch, and the start button 32 turns on and off the ignition switch. Anti-theft system set, reset and ignition switch O
For N and OFF, different types of radio waves are set, respectively, and the engine start and anti-theft device having the configuration of FIG. 4 needs to have a configuration for transmitting a total of four types of radio waves. [0005] Originally, the transmitter of such an engine starting and anti-theft device is carried and operated by a user similarly to a conventional automobile key, so that it is used in an automobile. It is desirable that it is small, lightweight, and easy to operate, just like the key. However, as described above, the conventional engine start and anti-theft device has four functions corresponding to the four functions of turning on / off the ignition switch, setting and resetting the anti-theft system, respectively.
The need to switch between different types of switches and to transmit radio waves limits the size, weight, and simplicity of operation. The present invention has been made in view of the above circumstances, and has as its object to provide an engine starting and anti-theft device that is smaller, lighter, and easier to operate. An engine start and theft prevention device according to a first aspect of the present invention is a device for preventing the start and theft of an engine of an automobile, and a first signal for transmitting a first signal. A transmitter comprising a transmitting means and a second transmitting means for transmitting a second signal;
Starting means for starting an automobile engine based on the first signal, ignition detecting means for detecting activation or stoppage of an ignition device of the automobile, and ignition detecting means If the ignition device detects that the ignition device is operating, the second signal stops the ignition switch, and the ignition detection unit detects that the ignition switch is stopped. And a main body including anti-theft control means for setting or canceling the automobile in the anti-theft state by the second signal. FIG. 1 is a diagram showing an appearance of a transmitter 25 of an engine starting and anti-theft device according to the present embodiment. It has a rounded shape as a whole, and a hole 20 for attaching a key ring is provided in the lower part. The transmitter 25 of the engine starting and theft prevention device according to the present embodiment comprises an antenna 23, a first button 21 for transmitting the signal 1, and a second button 2 for transmitting the signal 2.
2 The first button 21 is provided with four projections, so that even when it is difficult to visually recognize the button, the operation of the button is not mistaken by touch. An antenna 23 is a telescopic transmission antenna, and an ignition switch is turned on by a first button.
N, and sends a signal to turn off the ignition switch by the second button, or to set and reset the anti-theft system. FIG. 2 is a block diagram showing the configuration of the engine starting and anti-theft device of the present embodiment. The engine start and theft prevention device according to the present embodiment includes:
It comprises a transmitter 25 having the appearance described in FIG. 1 and a main body 10 attached to a vehicle. The transmitter 25 outputs the signal 1
, A second button 22 for transmitting the signal 2, and a first button 21 or the second button 2 for transmitting the signal 2.
And an antenna 23 for transmitting the signal selected by (2). The main body 10 also records an antenna 13 for receiving a signal transmitted from the antenna 23, a CPU 11 for controlling an ignition switch and an anti-theft system based on the signal received by the antenna 13, and data necessary for controlling the CPU 11. And a memory 12 to be used. The configuration other than the transmitter 25 and the main body 10 shown in FIG. 2 is a configuration provided in an automobile independently of the engine start and theft prevention device. The ignition plug 4 provided in the engine 54, the starter motor 3 for driving the starter 53, and the horn switch 15 are connected to the CPU 11.
Are connected and controlled by signal lines. The starter motor 3 of the starter 53 supplies power to rotate the engine until the engine completely explodes at the start of startup, and the ignition plug 4 ignites fuel mixed with air in the engine 54. The ignition switch 5 is mechanically turned on and off by a key to supply or stop electric power for ignition to the ignition plug 4. Like the ignition switch 5, the starter switch 6 is mechanically turned on and off by a key, is turned on at the same time as the ignition switch 5 is turned on, and is turned off when the engine has completely exploded. The battery 1 is a storage battery provided in an automobile. In a car, it rotates in conjunction with the rotation of the engine,
A generator called an alternator for generating electric power is provided (not shown), and a battery 1 temporarily stores the electric power generated by the alternator and supplies the electric power to each electric component of the vehicle. Next, transmission and reception of signals in the above-described configuration will be described. First, a signal instructing ON / OFF of an ignition switch or setting / resetting of an anti-theft system is transmitted from the transmitter 25 to the main body 10. When the antenna 13 of the main body 10 receives this signal, C
The PU 11 reads data from the memory 12 and determines what the received signal indicates. If the result of the determination is that the signal indicates an engine start, the ignition switch and the starter switch are turned on, and if it is determined that the engine has completely exploded by a signal input from an alternator (not shown), the starter is started. The switch is turned off to complete the engine start process. However, in this case, the ON and OFF of the ignition switch and the starter switch are not mechanically performed by the ignition switch 5 and the starter switch 6, but are controlled by the CPU 1 as shown in the figure.
One is done through. Therefore, hereinafter, in the present specification, the turning on of the ignition switch means that a current is supplied to the ignition plug 4 according to the judgment of the CPU 11, and OF
F indicates that no current is supplied, ON of the starter switch indicates that current is being supplied to the starter motor 3 by the determination of the CPU 11, and OFF indicates that no current is being supplied. If the result of the determination is that the signal indicates that the anti-theft system is to be set, a not-shown anti-theft sensor for detecting, for example, the opening and closing of a window, sends a signal to the CP.
Based on the detection signal input to U11, it is determined that the vehicle has a danger of being stolen, and the horn switch 15 is turned on to sound the horn, and a warning is issued. The configuration described in the present embodiment describes an example applied to a gasoline engine vehicle.
If the ignition plug 4 is changed to an ignition nozzle, the invention can be applied to a diesel engine vehicle. The CPU 11 of the engine start and theft prevention device of the present embodiment having the above-described configuration and function.
The processing performed in step (1) will be described more specifically with reference to the flowchart of FIG. The processing performed in the present embodiment is started by receiving signal 1 or signal 2 transmitted from transmitter 25. Upon receiving the signal 1, the CPU 11 turns on the ignition switch and the starter switch at that time, that is, supplies power to the ignition plug 4 and the starter motor 3 (S14), and records the reception of the signal 1 in the memory 12 (S15). ). If the signal 1 has not been received, the reception of the signal 2 is subsequently determined. If the signal 2 has been received (S2), the ignition switch is turned on, that is, whether or not power is supplied to the ignition plug 4. Is determined (S3). If the ignition switch is on, it is determined that the signal 2 received this time is an instruction to turn off the ignition switch, and it is recorded in the memory 12 that the signal 1 has been received. Is determined (S4). If it is recorded, the ignition switch is turned ON this time by the signal 1
It is determined that U11 has supplied power to the ignition plug 4, and the ignition switch is turned off (S5). On the other hand, when the ignition switch is OFF, it is determined that the signal 2 received this time is an instruction to set or reset the anti-theft system, and the signal 2 is received by the memory 12. It is determined whether or not there is a record (S7). If there is a record of the reception of the signal 2 in the memory 12, it is determined that the anti-theft system is currently set, and the anti-theft system is reset (S8). Since it is difficult to judge the setting and resetting of the anti-theft system from the appearance, the horn switch 15 is turned on and the horn is sounded twice to make the user confirm that the anti-theft system has been reset (S
9) The record that received the signal 2 from the memory 12 is deleted (S10). If there is no record of reception of the signal 2 in the memory 12, it is determined that the anti-theft system is currently reset, and the anti-theft system is set (S1).
1) Turn on the horn switch 15 to sound the horn once, make the user confirm that the anti-theft system has been set (S12), record the reception of the signal 2 in the memory 12, and record (S13) 7, the memory 12
The setting or resetting of the anti-theft system can be determined based on the presence or absence of the recording of the signal 2. In step 4, if there is no record of the reception of the signal 1 in the memory 12, it is determined that the ignition switch is turned on this time because the ignition switch 5 is turned on mechanically by a key and power is supplied to the ignition plug 4. Judge that it is supplied. As described above, the power supply path to the ignition plug 4 is different when the ignition switch is turned on by the key and when the ignition switch is turned on by the transmitter 25. Therefore, the ignition switch 5 turned on by the key cannot be turned off by the signal 2. In such a case, the process proceeds to step 7 to repeatedly set and reset the anti-theft system. The user sets the anti-theft system,
Steps 9 and 12 without intention to reset
When the horn is sounded in the above process, it is possible to notice that the ignition switch 5 is turned off by the signal 2 even though the ignition switch 5 is turned on using the key. In the above-described embodiment, one button can have a function of instructing turning off of the ignition switch, setting and resetting of the anti-theft system. Therefore, it is possible to perform all instructions using the two buttons, which are performed by the transmitter of the engine starting and anti-theft device. In the present embodiment, the signal 2 for instructing the ignition switch to be turned off is shared with the signal for instructing the setting and resetting of the anti-theft system, and the signal for instructing the ignition switch to be turned on is transmitted by another button. By doing so, an erroneous operation of instructing the ignition switch and the starter switch to be turned on for a vehicle whose ignition switch is turned on is suppressed. Further, in the present embodiment, by providing the first button 21 with a projection, the first button and the second button can be distinguished by touch even in darkness. In this embodiment, the setting and resetting of the anti-theft system, which is hard to judge from the appearance,
The user can confirm by playing the horn different times each time. According to the first aspect of the present invention, an engine starting and anti-theft apparatus starts an engine of an automobile by a signal transmitted by a first transmitting means, and starts by a signal transmitted by a second transmitting means. If the ignition device is activated, stop the ignition switch,
When the ignition device is stopped, the anti-theft switch is activated to set the anti-theft state,
Perform a reset. Therefore, there are four types of instructions (ignition switch ON / OFF, anti-theft setting,
Reset) can be given to the vehicle by two types of signals. Therefore, the transmitter only needs to include the first and second transmitting means, and the configuration can be simplified.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external view of a transmitter of an engine starting and anti-theft device of the present invention. FIG. 2 is a block diagram illustrating a configuration of an engine starting and anti-theft device according to the present invention. FIG. 3 is a flowchart showing processing of the engine start and anti-theft device of the present invention. FIG. 4 is an external view of a transmitter of a conventional engine starting and anti-theft device. [Description of Signs] 1 ... Battery 3 ... Starter motor 4 ... Ignition 5 ... Starter switch 6 ... Ignition switch 10 ... Main body 11 CPU CPU 12 ... Memory 13 ... Memory 15 Phone switch 21 ... switch 1, 22 ... switch 2.

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) B60R 25/04 B60R 25/10 F02D 17/04 F02D 29/02 F02D 45/00

Claims (1)

(1) An apparatus for preventing starting and theft of an engine of an automobile, comprising: first transmitting means (21, 23) for transmitting a first signal; A transmitter (25) including a second transmitting means (22, 23) for transmitting a signal, and a receiver (13) mounted on an automobile and receiving the first signal and the second signal. Starting means (1) for starting an engine of an automobile according to the first signal;
1, 3, 4) and an ignition detecting means (1) for detecting the operation or stop of the ignition device (4) of the vehicle.
(12) and stopping means (11, 12) for stopping the ignition device (4) according to the second signal when the ignition detection means (11) detects that the ignition device (4) is operating. 3, 4) and when the ignition detection means (11) detects that the ignition device (4) is stopped, the second
And an anti-theft control means (11, 15) for setting or releasing the vehicle to an anti-theft state by the signal of (1).