JPH0523977B2 - - Google Patents

Description

[Detailed description of the invention] [Field of invention technology] The present invention relates to a vehicle anti-theft device.

[Technical background of the invention and its problems] The conventional anti-theft device for a vehicle shown in FIG. 1 is controlled by a controller 5 operated by a battery 1. This controller 5 is composed of transistors, logic ICs, microcomputers, etc., and specifically, for example, "THEFT DETERRENT CONTOROLLER,
10BTDC1” (AUTO RADIO SERVICE
BULLETIN, April, 1980). here,
As an example, a microcomputer including a CPU 5a, ROM 5b, RAM 5c, and input/output interface 5d is shown.

Input/output interface 5d of controller 5
includes ignition switch 3, door switch 7, hood switch 9, trunk switch 11,
A door lock detection switch 13 and a key cylinder unlock switch 15 are connected, and the operating status of each of these switches is monitored by the controller 5. The door switch 7 is attached to each door, and is turned on when the door is opened and turned off when the door is closed. Food switch 9
is a switch that is controlled by the open/closed state of the hood, and is turned on when the hood is opened and turned off when it is closed. Similarly, the trunk switch 11 monitors the open/closed state of the trunk switch, and is turned ON when the trunk is opened and turned OFF when the trunk is closed. The door lock detection switch 13 is a switch that is turned OFF when the door is locked and turned ON when the door is unlocked. Key cylinder unlock switch 1
5 is when the door lock is unlocked with the key.
This is a switch that turns ON. Also controller 5
An indicator lamp 17 and a relay 19 are connected to the input/output interface 5d. Indicator lamp 17
is controlled by the controller 5 and displays various states, and the relay 19 is driven and operated by an alarm signal from the controller 5.
This activates the light 21 and horn 23 to generate an alarm.

Next, the operation will be explained using the flowchart shown in FIG. Ignition switch 3 is OFF
In this state, when the door, hood, and trunk are closed, the corresponding door switch 7, hood switch 9, and trunk switch 11 are in the OFF state, and the door lock is in the unlocked state, the door lock detection switch is activated. 13 is in the on state, these states are detected by the controller 5, the vehicle anti-theft device is in the unlocked state (step 100), and the indicator lamp 17 is in the off state (step 110). The indicator lamp 17 is provided inside the meter, on the instrument panel, on the door trim, or on the door knob so that it can be clearly seen from outside the vehicle. When the door is opened in this state, the door switch 7 is turned on and the indicator lamp 17 blinks (steps 120 and 130). Then, when the door lock knob is operated to lock the door, the door lock detection switch 13 is turned off, and the indicator lamp 17 changes from a blinking state to a continuous lighting state (step 140,
160), thereby indicating that the anti-theft device can now shift to the alert state. If the door is closed without being locked in step 140, the door lock detection switch 13 is ON and the door switch 7 is OFF, so the indicator lamp 17 goes out and the door is unlocked (Step 150). .

If you close all the doors when the indicator lamp 17 is lit continuously, indicating that it is possible to move to the alert state, the door switch 7 will be turned OFF, and the indicator lamp 17 will be turned off.
remains lit, but a timer is activated (steps 180, 190), and the light turns off automatically after a certain period of time, indicating that the anti-theft device has entered the alert state (step 210). , 220). Therefore, by observing the display change in which the indicator lamp 17 lights up for a certain period of time after closing the door and then turns off, it can be confirmed that the anti-theft device is in a completely alert state. It is. In step 190, if the ignition switch 3 is turned on while the timer is running or the door is unlocked with the key and the key cylinder unlock switch 15 is turned on, the anti-theft device will be in the unlocked state (step 190). 100),
Indicator lamp 17 goes out immediately.

If the ignition switch 3 is turned ON or the key cylinder unlock switch 15 is turned ON while the anti-theft device is in the alert state, the anti-theft device is unlocked from the alert state and returns to the unlocked state. If a door, hood, or trunk is opened without the ignition switch 3 or key cylinder unlock switch 15 returning to the ON state, the door switch 7, hood switch 9,
When any of the trunk switches 11 is turned ON, an alarm state occurs (steps 220 to 250), and the controller 5 generates an alarm signal, which drives the relay 19 to turn on the light 21 and the horn 2.
3 to generate an alarm.

The timer starts operating as soon as the alarm condition occurs and stops the alarm after a certain period of time (step
250, 270, 280). This is to prevent battery consumption from being consumed by driving the light 21 and horn 23 that display the alarm state. However, if the key cylinder unlock switch is not turned on in the alarm state and the alarm stopped state (steps 250 and 280), the system returns to the alert state and monitors the door switch, hood switch, and trunk switch 11 again. (Step 240). Therefore, if any of these switches are still in the ON state, the alarm state will occur again. These operations are repeated until the key cylinder unlock switch 15 is turned on, and the door is unlocked with the key.
Only when the key cylinder unlock switch 15 is turned on, the alarm state of the anti-theft device is released and the alarm state returns to the released state.

By the way, in this conventional vehicle anti-theft device, the display state of the indicator lamp is as shown in steps 130, 160, and 190 described above.
The door first flashes when it is open, then the door locks and the door lock detection switch is activated.
The light will remain on when it is turned off, but it will remain on even when the timer starts to operate when all the doors are closed and the system goes into alert mode, so operate the door lock knob to close the door. Even if the door does not close completely and becomes ajar when the door is closed after locking, the indicator lamp 17 will remain lit continuously.
There was a problem in that the door ajar state could not be confirmed and the anti-theft device mistakenly assumed that it had been set to the alarm state, so the alarm state was not set.

[Objective and Summary of the Invention] This invention has been made in view of the above, and its object is to set a warning state as one of the conditions for closing all the opening/closing bodies provided on the vehicle body. An object of the present invention is to provide a vehicle anti-theft device which issues an alarm when theft occurs, which prevents mistakes in setting the warning state due to the half-closed state of the opening/closing body.

In order to achieve the above object, the present invention, as shown in FIG. From the output signal of the detection means 55, it operates intermittently when it detects that the opening and closing bodies are in the open state, and operates continuously when it is detected that all the opening and closing bodies are in the closed and locked state. Operate. Further, when the theft alarm determination means 57 detects engine stoppage from the output signal of the engine stoppage detection means 51, the opening/closing body provided on the vehicle body is detected from the output signals of the open/close state detection means 53 and the locked state detection means 55 After detecting that all of the opening/closing bodies are closed and locked, an alarm is issued when it is detected that any of the opening/closing bodies is opened without a predetermined opening operation being performed.

[Embodiments of the Invention] Examples of the invention will be described below with reference to the drawings.

FIG. 4 is an operation flowchart of the controller 5 showing one embodiment of the present invention. The configuration shown in FIG. 1 is the same except for the function realizing means inside the controller 5, so the configuration shown in FIG. 1 will be used and the explanation thereof will be omitted.

In the flowchart shown in Figure 4, the second
A feature of the present invention is that instead of the indicator lamp 17 being turned on in step 160 of the flowchart of the conventional theft prevention device shown in the figure, a step 300 is provided in which the indicator lamp 17 blinks. As a result, when the anti-theft device is in the released state and the indicator lamp 1 is in the off state, the door is opened, the door switch 7 is turned on, and the indicator lamp 17 is in the blinking state (steps 100 to 130). ), even if the door lock detection switch 13 is turned off by operating the door lock knob and locking all the doors, the indicator lamp 17 remains in a blinking state without changing to continuous lighting. (Step 140,
300). After all the doors are locked in this way, all the doors are completely closed, and the door switch is turned OFF, and the indicator lamp 17 is turned on continuously (step 1).
180, 190), it indicates that an alert state has been set.

Therefore, if all the doors are locked by operating the door lock knobs and the indicator lamp 17 remains blinking, and the door is left ajar when the door is closed, the indicator lamp 17 will turn on continuously. Since it remains in the flashing state without changing, it is confirmed that the door is in the ajar state, and it is also possible to confirm that the anti-theft device is not set to the alert state.

In each of the embodiments, the indicator lamp 17 is used as a means for notifying the alarm state of the anti-theft device, but it goes without saying that a buzzer or the like may be used instead or in combination.
Furthermore, in each of the above-mentioned embodiments, the case where the anti-theft device is set to the alert state when the door is closed and locked is explained. Of course, the anti-theft device can also be set to the alert state in the same way.

[Effects of the Invention] As explained above, according to the present invention, one of the conditions is that all the opening/closing bodies provided on the vehicle body are in the closed state, and the alarm is set to the enabled state, thereby preventing theft. In the anti-theft device for a vehicle that issues an alarm when an occurrence occurs, when all of the opening/closing bodies are locked and closed and the alarm is enabled, the alarm means is configured to notify this.
If the opening/closing body is in a half-closed state when the opening/closing body is in the closed state, the notifying means does not issue a notification, so that the half-closed state can be known and the anti-theft device is in a state where an alarm is possible. It is possible to know that the alarm is not set to the half-closed state, and to prevent mistakes in setting the alarm-enabled state due to the half-closed state.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing a conventional vehicle anti-theft device and an embodiment of the present invention, FIG. 2 is an operational flowchart of the conventional vehicle anti-theft device, and FIG.
The figure is a claim correspondence diagram, and FIG. 4 is an operation flowchart of an embodiment of the present invention. 51...Engine stop detection means, 53...Open/closed state detection means, 55...Locked state detection means, 57
...Theft alarm determination means, 59...Notification means.

Claims (1)

[Scope of Claims] 1. Engine stop detection means for detecting engine stoppage; Opening/closing state detecting means for detecting the open/closed state of an opening/closing body provided on the vehicle body; and Locking state for detecting the locked state of the opening/closing body. a detection means, which operates intermittently when the output signals of the engine stop detection means, the opening/closing state detecting means, and the locking state detecting means are input, and it is detected that the opening/closing body is in the open state when the engine is stopped. and a notification means that operates continuously when it is detected that all of the opening/closing bodies are closed and locked when the engine is stopped, and outputs of the engine stop detection means, the open/close state detection means, and the locked state detection means. After inputting a signal and detecting that all of the opening/closing bodies are closed and locked when the engine is stopped, one of the opening/closing bodies becomes open without performing a predetermined opening operation. A theft prevention device for a vehicle, comprising: a theft alarm determining means that issues an alarm when detecting a theft alarm.