JPH0877471A - Security system - Google Patents

Abstract

PURPOSE: To narrow down a search range, to increase the possibility of discovery, and to make a 3rd person know that a car is a stolen car by disabling the vehicle to travel or making it hard to travel or taking an alarm action once the vehicle exits from a previously specified area. CONSTITUTION: A microcomputer 17 compares current position data from a GPS receiver 12 with an area (activity range of vehicle) stored in a memory 14, and perform a process for outputting a control signal to a microcomputer 18, the input process of a touch switch 16, the display process of a display unit 15, processes for controlling a CD-ROM drive and writing and reading the memory 14, etc., when the current position is outside the previously specified area (activity range of vehicle). The microcomputer 18 controls a device 19 to be controlled on the vehicle with the control signal from the microcomputer 17 to take anti-theft measures. The device 19 to be controlled is a device which disables the vehicle to travel or make the vehicle hard to travel or an alarm device which indicating the steal to a 3rd person.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle security system, and more particularly to a vehicle security system equipped with a navigation device capable of detecting the position of the vehicle.

[0002]

2. Description of the Related Art A block diagram of a conventional vehicle security system is shown in FIG. The detection device 51 detects whether the engine is started by a formal key or a formal procedure,
The detection result is output to the microcomputer 52. The microcomputer 52
If the engine has not been started by a formal key or a formal procedure based on the detection result of the detection device 51, it is determined that the engine is stolen, and the travel control device 53 is notified of a travel prohibition signal or the notification device 54.
The notification signal is output to. The traveling control device 53 cuts off the circuit for rotating the starter or the circuit for fuel injection in response to the traveling prohibition signal from the microcomputer 52 to disable the engine drive. The notification device 54 issues a warning by a notification signal from the microcomputer 52 or blinks a light to notify a third party of the theft.

[0003]

However, in the crime prevention system as described above, if the key is forged or if the performed procedure coincides with the formal procedure, the key may not operate properly due to malfunction of the microcomputer. If it cannot be detected whether or not it is a formal procedure, the vehicle is stolen, and in that case, it is almost impossible to find the vehicle.

[0004]

SUMMARY OF THE INVENTION The present invention is for solving the above-mentioned problems, and in a crime prevention system for a vehicle, position detecting means for detecting the current position of the vehicle, area specifying means for specifying the area, and It is characterized by further comprising: detection means for detecting that the vehicle has gone out of the area by the position detection means and the area designation means; and activation means for activating the crime prevention means according to the detection result of the detection means. .

Further, the crime prevention means is a traveling control means for making the vehicle unable to travel or difficult to travel. Further, the crime prevention means is an alarm means for issuing an alarm.

[0006]

When the vehicle goes out of the designated area, the crime prevention means is activated to control the engine, the transmission, etc., to make the vehicle incapable or difficult to travel, thereby making it impossible to move the vehicle. , It gives an alarm and informs a third party that it is a stolen vehicle.

[0007]

1 is a block diagram of a crime prevention system showing an embodiment of the present invention. In this embodiment, a global positioning system (GPS) using artificial satellites is used as a method for detecting the current position of the vehicle. In addition, the unit that can specify the area (vehicle action range) shall be the national unit, the state (prefecture) unit, or the city (town, village) unit.

The GPS antenna 11 receives signals from satellites. The GPS receiver 12 processes the signal received by the GPS antenna 11, obtains the current position of the vehicle, and outputs it to the microcomputer 17 as current position data. CD-RO
The M drive 13 reads data recorded on a CD-ROM (optical disc), and the CD-ROM includes data indicating names and ranges in countries, states (prefectures), cities (towns and villages), and map data. Etc. are recorded. Memory 1
The area 4 stores the area (vehicle action range) and the like designated in the processing described later. The display unit 15 displays country data, map data, etc. recorded on the CD-ROM, and is composed of a liquid crystal display element or the like. In addition, a transparent flat touch switch 16 is provided on the front surface of the display unit 15, and is configured so that a secret code input operation, a designation operation for designating an area (vehicle action range), and the like can be performed. The microcomputer 17 compares the current position data from the GPS receiver 12 with the region (vehicle action range) stored in the memory 14, and if the current position is outside the predetermined region (vehicle action range). , Processing of outputting a control signal to the microcomputer 18, input processing of the touch switch 16, display processing of the display unit 15, control of the CD-ROM drive, writing and reading processing of the memory 14, and the like. The microcomputer 18 controls the control target device 19 in the vehicle in response to a control signal from the microcomputer 17 to take a crime prevention measure. The controlled device 19 is a device that makes the vehicle incapable of traveling or difficult to travel,
Alternatively, it is an informing device that informs a third party of the theft. Details of the microcomputer 18 and the controlled device 19 will be described later. As a method for detecting the current position, a method using a beacon or the like, a method in which an azimuth sensor, a travel distance sensor, etc. are provided in the vehicle and the vehicle position is obtained by arithmetic processing of these sensor outputs may be used.

Next, the process of designating an area will be described with reference to FIG. Figure 2 shows the microcomputer 1 when specifying the area
It is a flowchart which shows the process of 7. When the password code for changing the designated area is input from the touch switch 16, the process is started. In step S1, if the designated unit of area is a national unit, step S2 is performed.
(It is judged by the operation state of the touch switch 16).
In step S2, the CD-ROM in the CD-ROM drive 13
The country data is read from the ROM, the country name is displayed on the display unit 15, and the process proceeds to step S3. In step S3, the area (country) designated by the touch switch 16 (multiple selection designation possible) is input and stored, and the process proceeds to step S13.

In step S4, the country name is displayed on the display unit 15 as in step S2, and the process proceeds to step S5. In step S5, as in step S3, the touch switch 1
The area (country) designated by 6 (multiple selection designation possible) is input and stored, and the process proceeds to step S6. In step S6, if the designated unit of area is a unit of state (prefecture), step S7 is entered. If it is not a unit of country or state (prefecture), step S9 is entered.
(It is judged by the operation state of the touch switch 16).
In step S7, the state (prefecture) data of the country specified in step S5 is transferred to the CD-ROM drive 13 CD.
-Read from ROM, display on display unit 15 and move to step S8. In step S8, the region (state (prefecture)) designated by the touch switch 16 (multiple selection designation possible) is input and stored, and the process proceeds to step S13.

In step S9, similarly to step S7, the state (prefecture) data of the country designated in step S5 is displayed on the display unit 15, and the process proceeds to step S10. In step S10, the touch switch 16 is used as in step S8.
The area (state (prefecture)) designated by is input (multiple selections can be designated), stored and stored in step S11. In step S11, the city (town / village) data of the state (prefecture) designated in step S9 is read from the CD-ROM of the CD-ROM drive 13, displayed on the display unit 15, and the process proceeds to step S12. In step S12, the area (city (town / village)) designated by the touch switch 16 (multiple selection designation possible) is input and stored, and the process proceeds to step S13.

In step S13, the designated area is stored in the memory 14 and the process ends. Next, the processing of the microcomputer 17 during the crime prevention operation will be described with reference to FIG. FIG.
It is a flow chart which shows processing of microcomputer 17 at the time of crime prevention operation. The region is designated and the ingnition is O
When the answer is N, the process is started. In step P1, GP
The current position data from the S receiver 12 is compared with the area stored in the memory 14, and if the current position is within the designated area, step P1 is repeated. That is, step P1 is repeated until the vehicle position is outside the predesignated area. If the vehicle position is outside the designated area, the process proceeds to step P2. In step P2, a control signal is output to the microcomputer 18, and the process ends. That is, by these processes, the microcomputer 17 outputs a control signal to the microcomputer 18 when the vehicle goes out of the designated area.

Next, the processing of the microcomputer 18 will be described with reference to FIG. FIG. 4 is a flowchart showing the processing of the microcomputer 18. Similar to the microcomputer 17, the region is designated and the process is started when the ignition is turned on. In step Q1, it is detected whether or not a control signal is output from the microcomputer 17, and if it is output, the process proceeds to step Q2. If it is not output, step Q1 is output.
Repeat 1. That is, step Q1 is repeated until the position of the host vehicle goes out of the designated area and the control signal is output from the microcomputer 17. In step Q2, the control target device 19 is controlled to take crime prevention measures, and the process is ended.

Next, specific operations of the microcomputer 18 and the controlled device 19 will be described. As a first embodiment, a case where the control target device 19 is an engine injector (fuel injection device) will be described. In this embodiment, the microcomputer 18 is a microcomputer for controlling fuel injection of the engine. Microcomputer 18
When it detects that the control signal is output from the microcomputer 17, it controls the controlled device 19 (injector) to prohibit the fuel injection to the engine (not shown), and disables the vehicle.

As described above, according to this embodiment, when the vehicle goes out of the designated area, the injector is controlled to prohibit the fuel injection into the engine, so that the vehicle cannot run. The search range of the vehicle can be limited (boundary of the designated area), and it also informs the third party that the vehicle is a stolen vehicle. Next, as a second embodiment, a case where the controlled device 19 is an engine ignition device will be described. In the present embodiment, the microcomputer 18 is a microcomputer that controls the ignition timing of the engine. When the microcomputer 18 detects that the control signal is output from the microcomputer 17, it controls the controlled device 19 (ignition device) to prohibit the ignition of the engine (not shown), and disables the vehicle.

As described above, according to this embodiment, when the vehicle goes out of the designated area, the ignition device is controlled to prohibit the ignition of the engine. The search range of can be limited (boundary of designated area),
It also informs a third party that it is a stolen vehicle. Next, a case where the control target device 19 is a valve (bypass valve) that controls idle rotation will be described as a third embodiment. In the present embodiment, the microcomputer 18 is a microcomputer that controls the idle speed of the engine. When the microcomputer 18 detects that the control signal is output from the microcomputer 17, it controls the control target device 19 (bypass valve) to the fully closed side to set the idle speed to 0 rpm, so that the engine does not step on the accelerator pedal. If you stop it, it will stop, making traveling of the vehicle extremely difficult.

As described above, according to this embodiment, when the vehicle goes out of the designated area, the bypass valve is controlled to set the idling speed to 0 rpm, so that the engine is frequently stopped and the vehicle is stopped. Since it is very difficult and unnatural to drive, a third party can be informed that he is a thief and the search range can be limited to some extent. Next, a case where the control target device 19 is a fuel pump will be described as a fourth embodiment. The microcomputer 18 is a microcomputer that controls the fuel pump. When the microcomputer 18 detects that the control signal is output from the microcomputer 17, it controls the control target device 19 (fuel pump) to prohibit the fuel supply to the engine (not shown), and disables the vehicle.

As described above, according to this embodiment, when the vehicle goes out of the designated area, the fuel pump is controlled to prohibit the fuel supply to the engine, so that the vehicle cannot run. Therefore, the search range of the vehicle can be limited (boundary of the designated area), and the third party can be informed that the vehicle is a stolen vehicle. Next, a case where the controlled device 19 is a transmission (T / M) will be described as a fifth embodiment. The microcomputer 18 is a microcomputer that controls the T / M. When the microcomputer 18 detects that the control signal is output from the microcomputer 17, the control target device 19 (T / M)
Control to change the gear to the 1st speed, making it impossible to shift up and making the vehicle difficult to run.

As described above, according to the present embodiment, when the vehicle goes out of the predesignated area, the T / M is controlled to fix the first speed, so that the vehicle runs at a low speed and becomes unnatural. Therefore, the third party will be informed that the vehicle is a stolen vehicle. Further, if the vehicle can only run at low speed, there is a high possibility that it will be abandoned, so the search range can be limited to some extent.

Next, as a sixth embodiment, a controlled device 19
As in the fifth embodiment, another processing in the case of transmission (T / M) will be described. The microcomputer 18 is the fifth
This is a microcomputer for controlling T / M as in the embodiment. When the microcomputer 18 detects that the control signal is output from the microcomputer 17, it controls the control target device 19 (T / M) to lock-up state (the engine drive shaft and the wheel shaft do not go through the liquid converter to operate the gears). When directly connected via the), the lockup state is fixed as it is, and in the non-lockup state, the lockup state is set and the lockup state is fixed. Therefore, if the vehicle is decelerated due to an uphill road, a traffic jam, or the like, and it becomes necessary to release the lockup state, the vehicle cannot run.

As described above, according to this embodiment, when the vehicle goes out of the designated area, the T / M is fixed in the lockup state, so that the vehicle is decelerated due to uphill slopes, traffic jams, etc. When it becomes necessary to cancel the operation, the vehicle becomes incapable of traveling, and the third person is informed that he is a thief. Further, it is possible to limit the search range to some extent.

Next, as a seventh embodiment, the controlled device 19
Another process in the case of the transmission (T / M) will be described as in the fifth and sixth embodiments. The microcomputer 18 is a microcomputer for controlling T / M as in the fifth and sixth embodiments. When the microcomputer 18 detects that the control signal is output from the microcomputer 17, it controls the control target device 19 (T / M) to switch to the parking range and fix it. When the controlled device 19 (T / M) is in the parking range, the engine is idling (the drive shaft of the engine is separated from the wheel shaft) and the wheel shaft is fixed, so that the vehicle cannot run. .

As described above, according to the present embodiment, when the vehicle goes out of the predesignated area, the engine is put in the idling state and the wheel shafts are placed in the locked state by switching the T / M to the parking range. Therefore, it becomes impossible to drive and the search range of the vehicle can be limited (boundary part of the designated area).
It also informs the person that it is a stolen vehicle. Next, a case where the control target device 19 is an alarm device (sound emitting device) will be described as an eighth embodiment. The microcomputer 18 is a microcomputer that controls the alarm device. The microcomputer 18 is the microcomputer 1
When it is detected that the control signal is output from 7, the control target device 19 (alarm device) is controlled to generate an alarm.

As described above, according to this embodiment, when the vehicle goes out of the area designated in advance, an alarm is generated to notify the third party that the vehicle is a stolen vehicle. If the microcomputer 18 controls the light and the device to be controlled 19 (alarm device) is a light and the vehicle goes out of a predetermined area, the same effect can be obtained by blinking the light. .

Next, as a ninth embodiment, the controlled device 19
A case will be described where the airbag inflator protects an occupant from the shock of a collision by inflating the airbag during a vehicle collision. The microcomputer 18 is a microcomputer that controls the airbag ignition device. The microcomputer 18 is the microcomputer 1
When it is detected that the control signal is output from 7, the control target device 19 (ignition device) is controlled to open the airbag to make the vehicle difficult to travel.

As described above, according to the present embodiment, when the vehicle goes out of the predesignated area, the airbag is opened and it becomes difficult to drive. Therefore, the third person is notified that the vehicle is a stolen vehicle. Become. Next, a controlled device 1 as a tenth embodiment
A case where 9 is a valve that controls the tire air pressure will be described. The microcomputer 18 is a microcomputer that controls the tire air pressure. When the microcomputer 18 detects that the control signal is output from the microcomputer 17, the microcomputer 18 controls the device to be controlled 19 (valve) to deflate the tire to make traveling difficult.

As described above, according to this embodiment, when the vehicle goes out of the designated area, the tires are deflated and it becomes difficult to drive the vehicle. Therefore, the third person is informed that the vehicle is a stolen vehicle. become. Next, a case where the controlled device 19 is a parking brake will be described as an eleventh embodiment. The microcomputer 18 is a microcomputer that controls the parking brake. When the microcomputer 18 detects that the control signal is output from the microcomputer 17, the controlled device 19 (parking brake) is actuated to disable the traveling.

As described above, according to this embodiment, when the vehicle goes out of the designated area, the parking brake is applied and the vehicle cannot run, so that the search range of the vehicle can be limited (the boundary of the designated area). ), And also informs a third party that it is a stolen vehicle. Further, for all the embodiments, it is possible to add a microcomputer for controlling the door and the window, and when the vehicle goes out of a predetermined area, it is possible to lock the door and control so that the window does not open. In this case, the criminal cannot escape to the outside of the vehicle, and the criminal can be arrested.

[0029]

As described in detail above, according to the present invention, when a vehicle goes out of a predesignated area, the vehicle becomes inoperable or difficult to drive, or an alarm is issued. More likely to find it,
It becomes possible to inform a third party that the vehicle is a stolen vehicle.

[Brief description of drawings]

FIG. 1 is a block diagram of a crime prevention system showing an embodiment of the present invention.

FIG. 2 is a flowchart showing processing of a microcomputer 17 when designating an action range.

FIG. 3 is a flowchart showing a process of the microcomputer 17 during a crime prevention operation.

FIG. 4 is a flowchart showing the processing of the microcomputer 18.

FIG. 5 is a block diagram showing a conventional security system.

[Explanation of symbols]

 11 ... GPS antenna 12 ... GPS receiver 13 ... CD-ROM drive 14 ... Memory 15 ... Display unit 16 ... Touch switch 17, 18, 52 ... Microcomputer 51 ...・ Detection device 53 ・ ・ ・ Running control device 54 ・ ・ ・ Notification device

Claims (3)

[Claims] 1. A security system for a vehicle, comprising: a position detecting means for detecting a current position of the vehicle; an area specifying means for specifying an area; and a vehicle moving out of the area by the position detecting means and the area specifying means. A crime prevention system comprising: a detection unit that detects that the crime prevention unit is activated, and an activation unit that activates the crime prevention unit according to the detection result of the detection unit. 2. The security system according to claim 1, wherein the security means is a travel control means that makes the vehicle unable to travel or difficult to travel. 3. The crime prevention system according to claim 1, wherein the crime prevention means is a warning means for issuing a warning.