JPH0971191A - Theft preventing device for on-vehicle electrical apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent repeated thefts by providing a nonvolatile memory shifting a mode to a warning mode when the abnormality of a vehicle is detected during a guard mode and storing the modes, and preventing a normal operation for an electrical apparatus having the nonvolatile memory storing the warning mode. SOLUTION: When a thief pries a door open while a guard mode is written in an EEPROM 43 before a warning mode is implemented, sensors of an abnormality detection section 10 detect an abnormality, the guard mode is shifted to the warning mode, and the warning mode is written in the EEPROM 43 for a CPU 42. When the thief removes a television 40, runs away with it, connects it to the power line of another vehicle, and turns on a power source, the CPU 42 reads out the warning mode written in the EEPROM 43 of the television 40, and it operates to block the drive of a television picture tube main body 41. The television 40 is not normally operated when the power source is tuned on, and it cannot be sold on a black market.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antitheft device for in-vehicle electrical equipment.

[0002]

2. Description of the Related Art A conventional anti-theft device for an on-vehicle electrical component, if set in a warning mode when a driver leaves the vehicle,
During this warning mode, a vibration sensor, a sensor that detects the opening and closing of the trunk without using a key, etc. detects an abnormality in the vehicle, and when these sensors detect an abnormality, the siren is blown or the light is turned on. The alarm is issued by blinking.

In this way, even if the driver leaves the vehicle, an alarm is issued when the possibility of theft occurs, so that a person near the vehicle hears the alarm and theft is prevented. It

[0004]

However, even if the warning mode is set when the driver leaves the vehicle and an alarm is issued at this time, if there is no person around the vehicle, There is a problem that the on-vehicle electrical equipment is stolen and the electrical equipment is sold in the so-called black market, and such theft is repeated.

According to the present invention, when an on-vehicle electrical component is stolen, the in-vehicle electrical component is prevented from operating normally even if the on-vehicle electrical component is mounted on another vehicle. It is an object of the present invention to provide a theft prevention device for an on-vehicle electrical component that prevents repeated theft of the on-vehicle electrical component.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to an abnormality detecting section for detecting an abnormality in a vehicle, and a warning mode for warning theft of the vehicle based on an output signal from the abnormality detecting section, or
An anti-theft device body that sets the alarm release mode that stops the alarm mode, and shifts to the alarm mode when the abnormality detection unit detects an abnormality of the vehicle during the alarm mode, a predetermined in-vehicle electrical component and the anti-theft device body A non-volatile memory for storing at least one of the alarm mode and the warning mode, which is stored in the on-vehicle electrical equipment and the signal line connecting the In-vehicle electrical components that allow normal operation, while on-vehicle electrical components that store a non-volatile memory that stores the alarm mode or alert mode are equipped with control means that prevent normal operation. is there.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing an antitheft device 1 for an on-vehicle electrical component showing an embodiment of the present invention.

The antitheft device 1 for in-vehicle electrical equipment comprises an abnormality detection section 10, an antitheft device body 20, an alarm means 30,
It has a television 40, a navigation device 50, and an audio device 60.

The abnormality detecting section 10 detects a door opening / closing sensor 11 for detecting that the door is opened without using a door key while the door is locked, a vibration sensor 12, and a seated state of a vehicle. And a trunk opening / closing sensor 14 for detecting that the trunk is opened without using a key during the trunk lock.

The anti-theft device body 20 includes a CPU 21 for controlling the whole of the anti-theft device 1 for in-vehicle electrical equipment, a warning / warning cancellation mode setting unit 22 for setting a warning mode and a warning cancellation mode by a vehicle user. It has a tuner 23 and a receiving antenna 24. The warning mode is a mode for warning theft of the vehicle based on the output signal from the abnormality detection unit 10, the warning cancellation mode is a mode for canceling the warning mode, and the CPU 21 detects an abnormality during the warning mode. The unit 10 shifts to the alarm mode when it detects an abnormality in the vehicle.

The alarm means 30 has a light drive section 31 for driving the light L to blink and a siren drive section 32 for driving the siren S.

The television 40 includes a television receiver main body 41,
It has a CPU 42 and an EEPROM 43. CPU4
2 communicates with the CPU 21, and when the warning mode is set, receives a signal indicating that from the CPU 21,
The fact that the warning mode is set is written in the ROM 43, and when operating in the warning mode, a signal to that effect is received from the CPU 21, and the fact that the warning mode is being executed is written in the EEPROM 43. . Also,
When the power of the television 40 is turned on, the CPU 42
Looking at the contents of the EEPROM 43, if the alarm mode or the warning mode is written, the driving of the television receiver body 41 is blocked.

The navigation device 50 has a navigation device main body 51, a CPU 52, and an EEPROM 53. The CPU 52 communicates with the CPU 21, and when the warning mode is set, sends a signal indicating that to the CPU 2
1 to write to the EEPROM 53 that the warning mode is set, and when operating in the warning mode, the CPU 21 receives a signal indicating that the warning mode is set.
The fact that the alarm mode is being executed is written in the OM 53. Further, the CPU 52 prevents the driving of the navigation apparatus main body 51 when the warning mode or the warning mode is written by looking at the contents of the EEPROM 53 when the navigation apparatus 50 is powered on.

The audio device 60 has an audio device main body 61, a CPU 62, and an EEPROM 63. The CPU 62 communicates with the CPU 21, receives a signal indicating that from the CPU 21 when the warning mode is set, writes the warning mode to the EEPROM 63, and operates in the warning mode. , A signal indicating that is received from the CPU 21, and the EEPROM 6
It is written in 3 that the alarm mode is being executed. Further, the CPU 62 looks at the contents of the EEPROM 63 when the audio device 60 is powered on,
When the warning mode or the warning mode is written, the driving of the navigation device body 61 is blocked.

The user remote controller 70 has a key 71.
, CPU 72, oscillation circuit 73, and transmission antenna 74
And a signal for setting the warning mode and the warning cancellation mode and the ID are transmitted to the anti-theft device body 20.

Next, the operation of the above embodiment will be described.

FIG. 2 is a flow chart showing the operation of the above embodiment, which is described focusing on the operation of the television 40.

First, when the warning mode is set by the mode setting section 22 (S1), the CPU 21 causes the CPU 42 to write information indicating that the warning mode is set in the EEPROM 43 in the television 40. , And the warning mode is written in the EEPROM 43 (S2). When a thief or the like prides on a door, a trunk, or the like while this warning mode is being executed, each sensor of the abnormality detection unit 10 detects an abnormality (S
3), shift from alert mode to alarm mode. That is, the CPU 21 writes the light L to the light driving unit 31.
Command to blink, and the siren drive 32
Command the siren S to ring (S4),
The CPU 42 is instructed to write information indicating that the alarm mode is being executed in the EEPROM 43, and the alarm mode is written in the EEPROM 43 (S
5).

Then, it is assumed that a thief or the like removes the television 40 and carries it away. The TV 40 that the thief took away
Is connected to the power line of another vehicle and the power of the TV 40 is turned on (S11).
The alarm mode is written in the ROM 43, and the EEP
The alarm mode written in the ROM 43 is set by the CPU 42.
Is read (S12), the CPU 42 operates to block the driving of the television receiver body 41 (S13). Therefore, when the power is turned on, the TV 40 does not operate normally, and thus it is not possible to sell the TV that does not work even when the power is turned on, that is, the stolen TV 40 is sold in the black market. I can't. Because of this, the thief would then be reluctant to steal electrical components from the vehicle, and would therefore cease to steal electrical components from the vehicle, which would reduce theft of in-vehicle electrical components.

On the other hand, when the thief steals electrical components from the vehicle, if the abnormality detection unit 10 does not operate normally or enters the vehicle from a portion where no sensor is installed, the thief will actually The CPU 21 of the anti-theft device body 20 may not enter the alarm mode even if the vehicle enters the vehicle. In this case, even if it is determined that the alarm mode is not set in step S12, it is found that the warning mode is written in the EEPROM 43 in the next determination step S14 (S14), and in this case also, the television receiver is set. The drive of 41 is blocked (S13), and it turns out that it is not a legitimate television. Also, the EEPROM of the television 40
Even if neither the warning mode nor the warning mode is written in 43, even if the ID given to the television 40 does not match the ID given to the antitheft device body 20 (S15), the television receiver 41 Is prevented from driving (S
13).

By the way, the EEPROM 43 of the television 40
Neither the warning mode nor the warning mode is written, and if the ID given to the television 40 matches the ID given to the anti-theft device body 20 (S1
5) The TV receiver 41 can be normally driven (S16).

The warning mode is EEP in the television 40.
If the user cancels the warning mode after the writing in the ROM 43, that is, if “no warning mode setting” or “setting the warning cancellation mode” is written in the EEPROM 43, the television main body 41 may be driven. It will be possible.

Although the above description is for the television 40, the navigation device 50, the audio device 60.
Also operates similarly to the operation of the television 40. Further, on-vehicle electrical equipment other than the radio 40, the CD 40, the television 40, the navigation device 50, and the audio device 60 may be connected to the anti-theft device body 20 via a bus. It is the same.

Further, in the above embodiment, the EEPROM
Instead of 43, 53, 63, another non-volatile memory may be used.

In the above embodiment, the antitheft device body 2
0 may be provided with a receiving unit, and this receiving unit may be provided with a transmitting unit that wirelessly transmits a signal.

Further, the CPUs 42, 5 in the above embodiment
Nos. 2 and 62 allow normal operation of in-vehicle electrical equipment that stores a non-volatile memory in which an alarm mode or a warning mode is not stored, while a non-volatile memory in which a warning mode or a warning mode is stored is permitted. An example of the control means for preventing the normal operation of the stored on-vehicle electrical equipment is shown, but the control means may be mounted on a vehicle other than the on-vehicle electrical equipment. That is, it may be provided outside the vehicle-mounted electrical component.

Further, in the above embodiment, each on-vehicle electrical component and the anti-theft device body are connected by a bus.
You may make it connect with another signal line instead of a bus.

[0028]

According to the present invention, even if a vehicle-mounted electric component is stolen, it does not operate normally when the vehicle-mounted electric component is mounted on another vehicle, so that it is motivated to steal the vehicle-mounted electric component. There is an effect that it is possible to reduce the number of times by half and prevent repeated theft of in-vehicle electric components.

[Brief description of drawings]

FIG. 1 is a block diagram of an antitheft device 1 for an on-vehicle electrical component showing an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the above embodiment, which is described focusing on the operation of the television 40.

[Explanation of symbols]

 10 ... Abnormality detection part, 20 ... Anti-theft device main body, 30 ... Warning means, 40 ... Television, 50 ... Navigation device, 60 ... Audio device, 43, 53, 63 ... EEPROM.

Claims (3)

[Claims] 1. An abnormality detection unit for detecting an abnormality of a vehicle; a warning mode for warning theft of a vehicle based on an output signal from the abnormality detection unit, or a warning cancellation mode for canceling the warning mode, An anti-theft device body that shifts to an alarm mode when the abnormality detection unit detects an abnormality of the vehicle during the warning mode; a signal line that connects a predetermined vehicle electrical component and the anti-theft device body; A non-volatile memory that is stored in an on-vehicle electrical component and stores at least one of the alarm mode and the warning mode; and a vehicle that stores the non-volatile memory in which the alarm mode and the warning mode are not stored Regarding electrical components, normal operation is permitted, while on-vehicle electrical components that store the nonvolatile memory that stores the alarm mode or the alert mode are An anti-theft device for in-vehicle electrical equipment, characterized by comprising: a control means for preventing normal operation. 2. The antitheft device for an on-vehicle electrical component according to claim 1, wherein the control means is stored in the on-vehicle electrical component. 3. The antitheft device for an on-vehicle electrical component according to claim 1, wherein the control means is mounted on the vehicle other than the on-vehicle electrical component.