JP2007262728A - Fraudulence preventing device of automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a configuration for detecting fraudulent opening and for preventing fraudulence simply without using a complicated configuration. <P>SOLUTION: This fraudulence preventing device 1 detects fraudulent opening of an engine compartment based on the detection result of a hood opening and closing switch 33 and the detection result of a hood curtain switch 35 without the operation of an operating part disposed in a cabin. To be concrete, it is detected whether or not that the sequence of detecting the hood opening and closing switch 33 and the hood curtain switch 35 is the regular sequence such that after the detection of the hood opening and closing switch 33, the opening of the hood curtain switch 35 is detected. When the detection result is that the regular sequence is not taken, a predetermined fraudulence preventing processing is conducted. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle anti-fraud device.

Conventionally, various thefts in the field of automobiles have been steadily followed, and various countermeasures against them have been urgently required. For example, an act of forcibly opening an engine hood and releasing an anti-theft device or an alarm device (for example, a security horn) as an injustice to the engine room has been regarded as a problem.
Japanese Utility Model Publication No. 6-60563 Utility Model Registration No. 3108474

  By the way, as a countermeasure against fraud in an automobile, for example, a technique as disclosed in Patent Document 1 is provided. In this technology, a key switch capable of stopping power supply from the battery is provided in the engine room to prevent theft of the automobile and battery exhaust when the automobile is left unattended. However, according to the present technology, a large key switch must be newly installed in a narrow space, resulting in a large space demerit. Further, since it is necessary to manually shut off the battery line, there is a problem in terms of operability and convenience.

  On the other hand, in the technique of Patent Document 2, when the anti-theft function in the anti-theft device is activated, the main machine drives the door lock of the automobile, and the circuit between the battery and the engine is not required to be conducted, and the hood is locked by the lock device The main machine is not destroyed. However, even with this technology, a new locking device must be installed, which increases the number of parts and the space disadvantage. Moreover, since it is the structure which operate | moves in cooperation with a main machine and an anti-theft device, there exists a problem that a cost rise cannot be avoided.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a configuration capable of easily performing unauthorized opening detection and unauthorized processing without using a complicated configuration.

As a means for achieving the above object, a fraud prevention device for an automobile according to claim 1 comprises:
A fraud to prevent the fraud of an automobile provided with an operation detecting means for detecting an operation by an operating means for performing an opening operation of a housing space in which a vehicle part is housed, and an opening detecting means for detecting the opening of the housing space Prevention device,
Unauthorized opening detection means for detecting that the accommodation space has been illegally opened without being operated by the operating means based on the detection result by the operation detecting means and the detection result by the opening detecting means;
Fraud prevention means for performing fraud prevention processing when the fraud detection is detected by the fraud detection means;
It is provided with.

The invention of claim 2 is the vehicle fraud prevention device according to claim 1,
In the unauthorized opening detection means, the order of detection by the operation detection means and the opening detection means is a normal order in which the opening detection means detects the opening of the accommodation space after detection by the operation detection means. Comprising order detection means for detecting whether or not
The fraud prevention unit performs the fraud prevention process when the operation detection unit and the opening detection unit detect the out of order.

The invention of claim 3 is the vehicle anti-fraud device according to claim 1 or 2,
The fraud prevention means includes a shut-off means for shutting off the power supply from the battery to the electrical component when the fraud release is detected by the fraud release detection means.

The invention of claim 4 is the vehicle anti-fraud device according to any one of claims 1 to 3,
The fraud prevention unit includes a notification signal output unit that outputs a notification signal when the unauthorized opening detection unit detects the unauthorized opening.

The invention of claim 5 is the vehicle anti-fraud device according to any one of claims 1 to 4,
The automobile includes an engine room in which an engine is mounted as the accommodation space, and has a hood unlocking means for unlocking an engine hood in accordance with an operation of an operation unit arranged in the vehicle compartment, as the operation means. The unlocking detection means for detecting unlocking by the hood unlocking means is provided as the operation detection means, and further, the hood opening detection means for detecting the opening of the engine hood is provided as the opening detection means,
The unauthorized opening detection means is based on the detection result by the unlocking detection means and the detection result by the hood opening detection means, and the unauthorized operation is performed regardless of the operation of the operation unit arranged in the vehicle compartment. It is characterized by detecting opening.

The invention of claim 6 is the vehicle anti-fraud device according to any one of claims 1 to 5,
The fraud prevention means cancels the fraud prevention processing on condition that specific identification information is input.

The invention of claim 7 is the fraud prevention device according to any one of claims 1 to 6,
The fraud detection means and the fraud prevention means are installed in a junction box.

<Invention of Claim 1>
According to the first aspect of the present invention, since the unauthorized opening detection means is configured to detect unauthorized opening based on the detection result by the operation detection means and the detection result by the opening detection means, a complicated configuration is not used. Unauthorized opening can be easily detected, and unauthorized prevention processing can be appropriately performed based on the detection.

<Invention of Claim 2>
According to the second aspect of the present invention, since the unauthorized opening can be detected based on whether the detection by the operation detecting means and the opening detecting means is in a normal order, it is a preferable example in which the unauthorized opening can be detected with a simple configuration. .

<Invention of Claim 3>
According to the invention of claim 3, since energization to some or all of the electrical components is interrupted when unauthorized opening is performed, an electrical operation such as unauthorized startup can be effectively prevented.

<Invention of Claim 4>
According to the invention of claim 4, since it becomes possible to notify when unauthorized opening is made, it is possible to effectively suppress fraud such as theft after unauthorized opening, or to take an appropriate response after unauthorized opening. Become.

<Invention of Claim 5>
According to the fifth aspect of the present invention, it is possible to detect with a simple configuration that the engine room is illegally opened without depending on the operation unit in the vehicle compartment, and the effect on the engine room where many expensive and important parts are arranged is effective. Can be prevented.

<Invention of Claim 6>
According to the invention of claim 6, the restoration process is performed in a situation where a legitimate user is forced to open a fraud or when testing whether the fraud prevention function is operating normally. It becomes easier to do.

<Invention of Claim 7>
According to the invention of claim 7, since the unauthorized opening detection means and the unauthorized prevention means are arranged in the junction box, the junction box can be used also as an unauthorized prevention device, and the energization arranged in the junction box The fraud prevention function can be realized by effectively using lines and electrical components.

<Embodiment 1>
Embodiment 1 of the present invention will be described with reference to the drawings.
(1. Overall configuration)
First, the overall configuration will be described with reference to FIG. FIG. 1 is a block diagram schematically illustrating a fraud prevention device 1 according to the first embodiment.
The fraud prevention device 1 is configured in a junction box, and includes a microcomputer 10 to which various signals are input and a relay 13 connected to a battery 3 (the battery 3 corresponds to a power source). Yes.
The microcomputer 10 has a configuration including a CPU, a ROM, a RAM, and the like (not shown), and is configured to receive a signal S0, a hood opening / closing switch signal S1, and a hood courtesy switch signal S2, which will be described later. Further, an energization signal for energizing the relay 13 and a non-energization signal for energization are output from the terminal P1. In the present embodiment, the microcomputer 10 corresponds to an unauthorized opening detection means, an unauthorized prevention means, an order detection means, a blocking means, and a notification signal output means, and the unauthorized detection means and the unauthorizedness prevention means are installed in a junction box. It is dressed up.

  The relay 13 is configured by a known switching means such as a mechanical relay, a photo MOS relay, or a semiconductor switching element such as a power MOSFET, and energizes the power supply line 20 and the battery 3 in accordance with an energization signal from the microcomputer 10. State. On the other hand, when the energization signal is not output from the microcomputer 10, the battery 3 and the power supply line 20 are in a non-energized state.

Outside the fraud detection device 1, an operation by an operation means (specifically, an operation key for performing an opening operation of an engine hood provided in an engine room) for opening an accommodation space in which an automobile part is accommodated is performed. A hood opening / closing switch 33 for detection is provided.
Specifically, a known hood unlocking mechanism (the hood unlocking mechanism corresponds to an example of the hood unlocking means) that unlocks the engine hood in response to an operation of an operation key arranged in the passenger compartment is provided. Yes. Various known mechanisms can be employed as long as the mechanism opens the engine hood based on the operation of an operation unit such as a lever arranged in the passenger compartment.

  The hood opening / closing switch 33 corresponds to an example of an operation detection unit and an unlock detection unit, and is configured to detect that the above-described hood unlocking mechanism is activated. Specifically, it is configured as a sensor that outputs a signal in accordance with the displacement of the parts constituting the hood opening mechanism.

The engine room (accommodating space) is provided with a hood courtesy switch 35 for detecting the opening of an engine hood (not shown) that opens and closes the engine room.
The hood courtesy switch 35 corresponds to an example of an opening detection means and a hood opening detection means, and is configured to output an opening signal S2 when the engine hood is opened. The hood courtesy switch 35 is configured by a sensor (such as a mechanical sensor or a photoelectric sensor) that outputs a closing signal when the engine hood is at a predetermined closing position and outputs an opening signal S2 when the engine hood is at an opening position. it can. Since the hood courtesy switch 35 detects the open state of the engine hood, the release signal S2 is output regardless of whether the hood unlocking mechanism is opened or not. It has come to be.

  Various electric components such as an ignition switch for starting the engine and various ECUs are connected to the power supply line 20, and when the relay 13 is in a closed state, power from the battery 3 is supplied to the electric components. I am doing. When the relay 13 is in the open state, the power supply to these electrical components is stopped. A fuse 11 is interposed between the relay 13 and the battery 3.

  The fraud prevention device 1 is connected to an external input device 31 so that a signal S0 described later can be input. The external input device 31 may be permanently installed in the automobile or may be detachable from the automobile. Moreover, the structure should just be a structure which can input information, for example, can be set as the apparatus which can input the numerical value or character provided with the input button.

(2. Fraud detection prevention process)
Next, the fraud detection preventing process will be described. FIG. 2 is a flowchart showing the flow of fraud detection prevention processing of the present embodiment.
In the unauthorized detection preventing process according to the present embodiment, the engine room is illegally opened based on the detection result by the hood opening / closing switch 33 and the detection result by the hood courtesy switch 35 without being operated by the operation unit arranged in the vehicle interior. When an unauthorized release is detected, a fraud prevention process for preventing subsequent fraud is performed. Specifically, it is detected whether the detection order by the hood opening / closing switch 33 and the hood courtesy switch 35 is a normal order in which opening is detected by the hood courtesy switch 35 after the detection by the hood opening / closing switch 33 is performed. ing. A predetermined fraud prevention process is performed when a detection out of the normal order is made. This will be specifically described below.

  The fraud detection preventing process shown in FIG. 2 is started based on, for example, turning on the power to the microcomputer. When the process is started, the relay 13 is first closed in S1. Thereafter, in S2, the hood courtesy switch 35 is turned on, and it is determined whether or not an open signal S2 is output from the hood courtesy switch 35. When the release signal S2 is not output (when the food courtesy switch 35 is not ON), the process proceeds to NO in S2, returns to S1, and maintains the closed state of the relay 13.

  On the other hand, if it is determined in S2 that the release signal S2 is detected from the hood courtesy switch 35, the process proceeds to YES in S2, and it is determined whether or not the hood opening / closing switch 33 is ON in S3. When the operation detection signal S1 is output from the hood opening / closing switch 33 and the hood opening / closing switch 22 is already ON, the process proceeds to YES in S3, and the relay is kept closed in S1. That is, in this case, since the opening is detected by the hood courtesy switch 35 after the detection by the hood opening / closing switch 33, the process returns to S1 and the energized state of the relay 13 is maintained.

  On the other hand, if the hood opening / closing switch 33 is not ON in S3 (if the operation detection signal S1 is not output from the hood opening / closing switch 33, the process proceeds to NO in S3, and the relay 13 is closed (that is, not energized). In this case, since it is an unauthorized opening that does not depend on the operation unit provided in the room, in S4, a non-energized state is set and electrical operation in the vehicle is disabled.

  In S5, it is determined whether a release signal is input. As shown in FIG. 1, when a signal can be input from the external input device 31 to the fraud prevention device 1, and this signal is correct (when the signal S0 is a regular release signal). In S5, the process proceeds to YES to cancel the energization cut-off state. In the fraud prevention device 1, information such as characters and numbers can be input by the external input device 31, and a password that matches a password registered in advance in the fraud prevention device 1 is used as a release signal.

  In the present embodiment, a password (that is, a release signal) that matches a password registered in advance corresponds to an example of “specific identification information”, and the specific identification information is input as described above. As a condition, fraud prevention processing (processing for setting the relay 13 in a power-off state) is canceled. On the other hand, if the release signal is not input, the process proceeds to NO in S5, and the relay 13 is kept open in S4. As described above, the functioning microcomputer 10 corresponding to an example of the fraud prevention means functions as a shut-off means for shutting off the power supply from the battery 3 to the electrical component when the unauthorized opening is detected.

  As described above, in the configuration according to the present embodiment, the microcomputer 10 detects unauthorized opening based on the detection result by the hood opening / closing switch 33 (operation detection means) and the detection result by the hood courtesy switch 35 (open detection means). Since it is configured, unauthorized opening can be easily detected without using a complicated configuration, and unauthorized prevention processing can be appropriately performed based on the detection.

  Further, since the unauthorized opening can be detected based on whether or not the detection by the hood opening / closing switch 33 (operation detecting means) and the hood courtesy switch 35 (opening detecting means) is in a normal order, the unauthorized opening is detected with a simple configuration. This is a preferable example.

  In addition, when unauthorized opening is performed, energization of some or all of the electrical components is interrupted, so that an electrical operation such as unauthorized starting can be effectively prevented.

  Furthermore, it is possible to detect with a simple configuration that the engine room is illegally opened without depending on the operation unit in the vehicle interior, and it is possible to effectively prevent the engine room where many expensive and important parts are arranged. ing.

  In addition, since it is possible to cancel the fraud prevention process by inputting specific identification information from the external input device 31, it is possible that a legitimate user is forced to release the fraud, or the fraud prevention function is normally performed. When testing whether or not it is operating, it is easy to perform the return process.

  Further, since the parts corresponding to the unauthorized opening detection means and the unauthorized prevention means (that is, the microcomputer 10) are arranged in the junction box, the junction box can also be used as an unauthorized prevention device, and is arranged in the junction box. The fraud prevention function can be realized by effectively using the energization line and the electrical parts.

<Embodiment 2>
A second embodiment of the present invention will be described with reference to FIGS.
FIG. 3 is a block diagram schematically illustrating a fraud prevention apparatus according to the second embodiment. FIG. 4 is a flowchart illustrating the flow of fraud detection prevention processing according to the second embodiment.
In the present embodiment, the microcomputer 10 corresponding to the fraud prevention unit also has a function as a notification signal output unit that outputs a notification signal to the outside when the unauthorized opening is detected. The fraud prevention apparatus 100 of FIG. 3 is provided with a conduction line 43 for the horn 37 and a conduction line 45 for the headlamp 39 on the line 41 from the battery 3 to the relay 13, and the relay 15 interposed in the conduction line 43 by the microcomputer 10. And the relay 17 intervening in the energization line 45 can be controlled together, and the other parts are the same as in the first embodiment. Therefore, the same code | symbol is attached | subjected about the same part and detailed description shall be abbreviate | omitted. The relay 15 and the relay 17 can have the same configuration as the relay 13. Further, since the horn 37 and the headlamp 39 employ known horns and headlamps, detailed description thereof is omitted.

  Even in the unauthorized detection preventing process according to the present embodiment, the engine room is illegally opened based on the detection result by the hood opening / closing switch 33 and the detection result by the hood courtesy switch 35 without being operated by the operation unit arranged in the vehicle interior. When an unauthorized release is detected, a fraud prevention process for preventing subsequent fraud is performed. Specifically, it is detected whether the detection order by the hood opening / closing switch 33 and the hood courtesy switch 35 is a normal order in which opening is detected by the hood courtesy switch 35 after the detection by the hood opening / closing switch 33 is performed. ing. A predetermined fraud prevention process is performed when a detection out of the normal order is made.

  As shown in FIG. 4, in S10, S20, and S30, the same processing as S1, S2, and S3 of the first embodiment is performed. That is, the relay 13 is closed at S10. Thereafter, in S20, the hood courtesy switch 35 is turned on, and it is determined whether or not an open signal S2 is output from the hood courtesy switch 35. When the release signal S2 is not output (when the food courtesy switch 35 is not ON), the process proceeds to NO in S20, returns to S10, and maintains the closed state of the relay 13.

  On the other hand, when it is determined in S20 that the release signal S2 is detected from the hood courtesy switch 35, the process proceeds to YES in S20, and it is determined whether or not the hood opening / closing switch 33 is ON in S30. When the operation detection signal S1 is output from the hood opening / closing switch 33 and the hood opening / closing switch 22 is already ON, the process proceeds to YES in S30, and the closed state of the relay is maintained in S10. In other words, in this case, since the opening is detected by the hood courtesy switch 35 after the detection by the hood opening / closing switch 33, the process returns to S10 and the energized state of the relay 13 is maintained.

  On the other hand, if the hood opening / closing switch 33 is not ON in S30 (if the operation detection signal S1 is not output from the hood opening / closing switch 33, the process proceeds to NO in S30, and the relay 13 is closed in S40 (that is, In this case, since it is an unauthorized opening that does not depend on the operation unit provided in the room, in S40, the deenergized state is set to disable electrical operation in the vehicle. The horn 37 and the head lamp 39 are activated, specifically, an energization signal for energizing the relay 15 and the relay 17 is output from the terminal P2 of the microcomputer 10. The relay 15 and the relay 17 are associated with the energization signal. Is closed, electric power is supplied from the battery 3 to the horn 37 and the headlamp 39, and the horn is sounded and the headlamp is turned on.

  In S60, it is determined whether a release signal (specific identification information) is input. Also in the present embodiment, a signal can be input from the external input device 31 to the fraud prevention device 1 as in the first embodiment, and this signal is a normal release signal (specific identification information) (ie, If the signal S0 is a password that matches a pre-registered password), the process proceeds to YES in S60, the energization signal from the microcomputer 10 to the relay 15 and the relay 17 is stopped, and the horn 37 and the headlamp 39 Is returned to S10 and the relay 13 is closed. That is, the process of cutting off the power supply to the power supply line 20 (tamper prevention process) is canceled. If no release signal is input, the process proceeds to NO in S60, and the open state of the relay 13 and the operating states of the horn 37 and the headlamp 39 are maintained.

  In the present embodiment, since it becomes possible to notify the outside when unauthorized opening is made, in addition to various effects in Embodiment 1, fraud such as theft after unauthorized opening is effectively suppressed, or It also has the remarkable effect of making it easier to take appropriate measures after unauthorized opening.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, the order detection means is configured by a microcomputer, but may be realized by a logic circuit other than the microcomputer. That is, a logic circuit is provided for outputting a signal for closing the relay 13 when the operation detection signal S1 is not output from the hood opening / closing switch 33 when the release signal S2 from the hood courtesy switch is input. May be.
(2) In the second embodiment, the configuration in which both the horn and the headlight are operated when unauthorized opening is detected is exemplified, but only one of them may be operated. Moreover, the structure which outputs the alerting | reporting signal which operates another alerting | reporting means (for example, another lamp | ramp) may be sufficient.
(3) In the second embodiment, as the fraud prevention process, an example of executing both the process of outputting the notification signal and the process of shutting off the relay 13 is shown. However, only the process of outputting the notification signal is performed as the fraud prevention process. You may do it.

1 is a block diagram schematically illustrating a fraud prevention device according to a first embodiment of the invention. The flowchart which illustrates the flow of the fraud detection prevention process of Embodiment 1. The block diagram which illustrates schematically the fraud prevention apparatus which concerns on Embodiment 2 of this invention. The flowchart which illustrates the flow of the fraud detection prevention process of Embodiment 2.

Explanation of symbols

1 ... Fraud prevention device 3 ... Battery (power supply)
10 ... microcomputer (unauthorized opening detection means, fraud prevention means, order detection means, blocking means, notification signal output means)
13 ... Relay 33 ... Hood open / close switch (operation detection means, unlock detection means)
35 ... Hood courtesy switch (open detection means, hood open detection means)

Claims (7)

A fraud to prevent the fraud of an automobile provided with an operation detecting means for detecting an operation by an operating means for performing an opening operation of a housing space in which a vehicle part is housed, and an opening detecting means for detecting the opening of the housing space Prevention device,
Unauthorized opening detection means for detecting that the accommodation space has been illegally opened without being operated by the operating means based on the detection result by the operation detecting means and the detection result by the opening detecting means;
Fraud prevention means for performing fraud prevention processing when the fraud detection is detected by the fraud detection means;
A vehicle anti-fraud device characterized by comprising: In the unauthorized opening detection means, the order of detection by the operation detection means and the opening detection means is a normal order in which the opening detection means detects the opening of the accommodation space after detection by the operation detection means. Comprising order detection means for detecting whether or not
The vehicle fraud prevention apparatus according to claim 1, wherein the fraud prevention unit performs the fraud prevention process when the operation detection unit and the opening detection unit detect the out of order. The said unauthorized prevention means is provided with the interruption | blocking means which interrupts | blocks the electricity supply to the electrical component from a battery, when the said unauthorized opening detection is detected by the said unauthorized opening detection means. The vehicle anti-fraud device as described. The said fraud prevention means is provided with the alerting signal output means which outputs an alerting signal, when the said unauthorized opening detection is detected by the said unauthorized opening detection means, The Claim 1 thru | or 3 characterized by the above-mentioned. Car fraud prevention device. The automobile includes an engine room in which an engine is mounted as the accommodation space, and has a hood unlocking means for unlocking an engine hood in accordance with an operation of an operation unit arranged in the vehicle compartment, as the operation means. The unlocking detection means for detecting unlocking by the hood unlocking means is provided as the operation detection means, and further, the hood opening detection means for detecting the opening of the engine hood is provided as the opening detection means,
The unauthorized opening detection means is based on the detection result by the unlocking detection means and the detection result by the hood opening detection means, and the unauthorized operation is performed regardless of the operation of the operation unit arranged in the vehicle compartment. 5. The vehicle anti-fraud device according to claim 1, wherein the device is detected to be opened. 6. The fraud prevention apparatus for an automobile according to claim 1, wherein the fraud prevention means cancels the fraud prevention processing on condition that specific identification information is input. The vehicle fraud prevention device according to any one of claims 1 to 6, wherein the fraud detection means and the fraud prevention means are installed in a junction box.

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