JP3843872B2 - Vehicle unauthorized movement estimation device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an unauthorized movement estimation device for a vehicle that estimates unauthorized movement of a vehicle.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there is an estimation apparatus that estimates an unauthorized movement of a vehicle by mounting an inclination sensor that detects the inclination of the vehicle on the vehicle and estimating that the vehicle has been illegally moved when parked.
[0003]
In other words, when moving a vehicle with a tow truck or the like, the tow truck moves the vehicle by lifting the front of the vehicle or the rear of the vehicle, so when the tilt angle of the vehicle generated when the vehicle is lifted is detected by the tilt sensor, It can be estimated that the vehicle has been illegally moved.
[0004]
[Problems to be solved by the invention]
However, if the tow truck lifts the vehicle by a slight tilt angle in order to move the vehicle, the detection output of the tilt sensor changes only slightly. For this reason, for example, even if the detection output of the tilt sensor is amplified by an amplifier or the like, the signal and the noise may not be distinguished. That is, there is a problem that the S / N of the detection output of the tilt sensor is poor, so that the tilt detection of the vehicle by the tilt sensor and thus the estimation of the unauthorized movement of the vehicle cannot be performed with high accuracy.
[0005]
In view of the above-described points, an object of the present invention is to provide an unauthorized movement estimation device for a vehicle that can favorably estimate unauthorized movement of a vehicle without using a tilt sensor.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, in the invention described in claim 1, a camera (10) that captures the outside of the passenger compartment and a camera control means (10) that controls the camera to sequentially capture the exterior of the passenger compartment ( 110, 150), an image determination means (170) for determining whether or not the sequentially captured images have changed relatively, and an image determination means for the relative change of the sequentially captured images. When the determination is made, it is estimated that the vehicle has illegally moved.
[0007]
In this way, when it is determined that the images sequentially captured by the camera have changed relatively, it is estimated that the vehicle has moved improperly. Specifically, it can be estimated well, as in the invention described in claim 2, has parking determination means (140) for determining whether or not the vehicle is parked, and parks that the vehicle is parked. When the determination unit determines, the camera control unit preferably controls the camera so that the outside of the passenger compartment is sequentially imaged.
[0008]
Further, in determining that the vehicle is parked, as in the invention according to claim 3, the parking determination means is configured such that the vehicle door locking device is locked by an operation from the outside of the vehicle. It is preferable to determine that the vehicle is parked.
[0009]
Specifically, in the invention according to claim 4, the camera control unit controls the camera so that imaged Taking the cabin during parking start of the vehicle, so that imaged sequentially shooting the vehicle exterior after the parking start of the vehicle a is for controlling the camera, the image determining means, when the parking start time to the shooting mirrored image and the parking start after sequential shooting projected image is relatively mismatch image projected Ta relative It is preferable to determine that the change has been made.
[0010]
It is preferable to apply the invention according to claim 5 or 6 when it is estimated by the invention according to claims 1 to 4 that the vehicle has illegally moved.
[0011]
That is, in the invention described in claim 5, the alarm issuing means (21) for issuing an alarm and the alarm control means (180) for issuing an alarm by the alarm issuing means when it is estimated that the vehicle has illegally moved. It is characterized by having.
[0012]
In the invention described in claim 6, when it is estimated that the vehicle has illegally moved, the communication means (30) for notifying the outside of the passenger compartment by wireless communication, so that the unauthorized movement of the vehicle is notified outside the passenger compartment. Communication control means (190) for controlling the communication means.
[0013]
Incidentally, the reference numerals in parentheses of each means described above are an example showing the correspondence with the specific means described in the embodiments described later.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an embodiment of a vehicle antitheft device to which a vehicle unauthorized movement estimation device according to the present invention is applied.
[0015]
As shown in FIG. 1, the vehicle antitheft device includes an outside monitor camera 10, an alarm control unit 20, a speaker 21, a wireless communication device 30, a door lock / unlock detection unit 40, and a controller 50. The outside monitor camera 10 is, for example, a digital camera as a still camera, and is mounted in the vehicle traveling direction by a front bumper of the vehicle, and images the vehicle traveling direction and outputs image data.
[0016]
The alarm control unit 20 generates an alarm sound from the speaker 21. The speaker 21 is arranged outside the passenger compartment, and can generate a warning sound to notify a warning around the vehicle. Further, the wireless communication device 30 is, for example, an in-vehicle phone or the like, and communicates with a mobile phone of a vehicle user via a base station 31 of a mobile phone network.
[0017]
The door lock / unlock detection unit 40 is, for example, a normally open switch provided inside the door, and opens and closes in conjunction with the operation of the key in a key cylinder provided with the door. The key cylinder is configured such that a key is inserted from the outside of the door and the door locking device 42 can be unlocked or locked by operating the key.
[0018]
Thereby, the door lock unlock detection part 40 can detect that the locking device 42 of the vehicle door is locked by the key operation from the vehicle outer side.
[0019]
The controller 50 includes a microcomputer 51, a memory 52, and the like. As will be described later, the microcomputer 51 estimates the unauthorized movement of the vehicle based on the image data of the vehicle traveling direction taken by the monitor camera 10 outside the vehicle compartment, and executes an alarm issuing process for issuing an alarm.
[0020]
The memory 52 includes a ROM, a RAM, and the like. The ROM is a flash ROM, and stores image path data captured by the vehicle monitor camera 10 in addition to the computer program. The RAM is a DRAM or SRAM, and stores data associated with the processing of the microcomputer 51. Note that the RAM also stores the image data captured by the monitor camera 10 outside the vehicle.
[0021]
Next, the operation of this embodiment will be described. The microcomputer 51 executes the computer program according to the flowchart shown in FIG.
[0022]
First, the user parks the car in the parking lot, stops the engine, opens the door, gets off, and closes the door. Thereafter, the user inserts a key into the key cylinder from the outside of the vehicle, and locks the door locking device 42 by operating the key. Along with this, the door lock / unlock detection unit 40 detects the lock operation of the key and outputs a lock signal.
[0023]
Accordingly, when this lock signal is input to the microcomputer 51, the microcomputer 51 determines that the door of the vehicle is locked by the lock device 42 from the outside of the vehicle (step 100). That is, it is determined that the car has started parking.
[0024]
Along with this, the microcomputer 51 activates the monitor camera 10 outside the vehicle to image the image data in the vehicle traveling direction (step 110) , and collects image data in the vehicle traveling direction from the monitor camera 10 outside the vehicle. The image data (hereinafter referred to as initial image data) is stored in the flash ROM (steps 120 and 130). As a result, the initial image data is stored in the flash ROM as image data at the start of parking of the automobile.
[0025]
Next, the microcomputer 51 determines whether or not the vehicle door locking device 42 is locked by an operation from the outside of the vehicle (step 140). When the lock signal from the door lock / unlock detection unit 40 is input, it is determined that the vehicle door lock device 42 is locked by an operation from the outside of the vehicle.
[0026]
Next, the outside monitor camera 10 is activated to capture image data in the vehicle traveling direction (step 150) , and image data in the vehicle traveling direction (hereinafter referred to as image data as needed) is transmitted from the outside monitor camera 10 in the vehicle interior. Collect (step 160). The ad hoc image data is compared with the initial image data stored in the flash ROM to determine whether the ad hoc image data has changed relative to the initial image data (step 170).
[0027]
For example, when image data including a building 300 is collected as initial image data as shown in FIG. 3A, the outline of the building 300 included in the initial image data is obtained by image processing, and included in the image data as needed. The contour of the building 300 is obtained by image processing.
[0028]
Here, when the coordinates of the outline of the building 300 included in the initial image data and the coordinates of the outline of the building 300 included in the image data coincide with each other, the image data changes from time to time relative to the initial image data. Judge that it is not. That is, it is determined that the vehicle is not improperly moved.
[0029]
Accordingly, the above-described door lock determination (step 140), camera activation processing (step 150), and occasional image data collection processing (step 160) are performed. It is repeated as long as it is determined that there is no relative change.
[0030]
As a result, the vehicle traveling direction is photographed at regular intervals by the outside monitor camera 10. That is, after the vehicle is parked, the vehicle traveling direction is sequentially captured by the outside monitor camera 10, and it is sequentially determined whether or not the image data at any time for each photographing has changed relative to the initial image data. become.
[0031]
Thereafter, in step 160, when the image data shown in FIG. 3B is collected as occasional image data, the coordinates of the outline of the building 300 included in the initial image data and the outline of the building 300 included in the occasional image data are displayed. It is determined that the coordinates do not match and the image data has changed relative to the initial image data as needed (step 170).
[0032]
In FIG. 3A, the building 300 is located in the center of the page in the image data, and in FIG. 3B, the building 300 is located on the right side of the page in the image data.
[0033]
As described above, when it is determined that the image data has changed relative to the initial image data at any time, it is estimated that the automobile has moved illegally. Accordingly, an alarm sound is generated from the speaker 21 around the vehicle by the alarm control unit 20 (step 180).
[0034]
Further, an unauthorized movement notification signal for notifying the user that the automobile has been illegally moved is transmitted to the base station 31 of the mobile telephone network by the wireless communication device 30 (step 190). Accordingly, when the transmitted unauthorized movement notification signal is relayed by the base station 31 and received by the user's mobile phone, the user can know that the vehicle has been illegally moved by the mobile phone. . Further, the unauthorized movement notification signal transmitted from the wireless communication device 30 may be transferred to the telephone such as the police by the base station 31.
[0035]
As described above, according to the present embodiment, since the image data captured at the start of parking and the image data captured after the parking start are relatively compared to estimate the unauthorized movement of the vehicle, The unauthorized movement of the vehicle can be estimated well without using the tilt sensor.
[0036]
Further, in the above-described embodiment, in order to detect that the lock device for the door of the vehicle is locked by an operation from the outside of the vehicle, the door is opened and closed in conjunction with the operation of the key in the key cylinder provided in the door. Although an example in which the normally open switch is applied has been described, a normally closed switch may be applied.
[0037]
In addition, the present invention is not limited to a switch that opens and closes in conjunction with the operation of a key in a key cylinder provided in the door, and may be as follows when a keyless entry system for a vehicle is applied.
[0038]
In other words, in an automobile equipped with a keyless ECU that wirelessly communicates with a portable device via an in-vehicle antenna, an operation for the user to lock the door when the user leaves the automobile while carrying the portable device. Is performed on the operation unit of the portable device, the portable device transmits a lock signal.
[0039]
Accordingly, when the keyless ECU receives the lock signal from the portable device, the lockless signal is output to the door lock device. Accordingly, the door lock device can lock the door.
[0040]
Here, the keyless ECU outputs a lock signal to the door lock device and also outputs the lock signal to the microcomputer 51. When this lock signal is input to the microcomputer 51, the microcomputer 51 determines that the door of the vehicle is locked by the lock device 42 from the outside of the vehicle.
[0041]
In the above-described embodiment, the one that applies a still camera that captures images one by one as a camera that captures the outside of the passenger compartment has been shown. Also good.
[0042]
Here, the camera is not limited to a camera that acquires image data in the vehicle traveling direction, but may be a camera that acquires image data behind the vehicle or image data on the side of the vehicle. In addition, the camera is not limited to being installed outside the vehicle, and may be built in a vehicle interior, for example, a rearview mirror.
[0043]
Furthermore, although the said embodiment demonstrated the example which determined that the vehicle was parked when the door of the vehicle was locked by operation from the vehicle outer side by the locking device 40, the vehicle is parked. Various determination processes may be applied as long as the determination process is performed.
[0044]
Hereinafter, the correspondence relationship between the above embodiment and the configuration of the scope of the claims will be described. The monitor camera 10 outside the vehicle corresponds to the camera, steps 110 and 150 correspond to the camera control means, and step 170 corresponds to the image determination means. Step 140 corresponds to parking determination means , speaker 21 corresponds to alarm issuing means, step 180 corresponds to alarm control means, wireless communication device 30 corresponds to communication means, and step 190 controls communication. Corresponds to means.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a vehicle antitheft device according to an embodiment of the present invention.
FIG. 2 is a flowchart showing processing of the microcomputer shown in FIG. 1;
3 is a diagram showing image data obtained by a monitor camera outside the vehicle compartment shown in FIG. 1. FIG.
[Explanation of symbols]
51. Microcomputer, 10 ... Outside monitor camera.

Claims (6)

A camera (10) for shooting outside the vehicle compartment;
Camera control means (110, 150) for controlling the camera so as to sequentially capture the outside of the passenger compartment;
Image determination means (170) for determining whether or not the sequentially captured images have changed relatively,
An unauthorized movement estimation device for a vehicle, wherein when the image determination means determines that the sequentially captured images have changed relatively, it is estimated that the vehicle has illegally moved. Having a parking determination means (140) for determining whether or not the vehicle is parked;
2. The vehicle according to claim 1, wherein when the parking determination unit determines that the vehicle is parked, the camera control unit controls the camera so that the outside of the passenger compartment is sequentially imaged. Illegal movement estimation device. 3. The unauthorized movement of the vehicle according to claim 2, wherein the parking determination means determines that the vehicle is parked when the door locking device of the vehicle is locked by an operation from the outside of the vehicle. Estimating device. Said camera control means is adapted to the camera control so that imaged Taking the vehicle outside when parking start of the vehicle, and controls the camera so as to imaged sequentially shooting the vehicle outside after parking start of the vehicle,
The image determination means, when the captured image at the start of parking and the images sequentially captured after the parking start are relatively inconsistent, the captured image has changed relatively The apparatus for estimating unauthorized movement of a vehicle according to any one of claims 1 to 3, wherein: An alarm issuing means (21) for issuing an alarm;
An alarm control means (180) for issuing an alarm by the alarm issuing means when it is estimated that the vehicle has illegally moved;
The apparatus for estimating unauthorized movement of a vehicle according to any one of claims 1 to 4, further comprising: A communication means (30) for notifying the passenger compartment by wireless communication;
Communication control means (190) for controlling the communication means to notify the outside of the passenger compartment of unauthorized movement of the vehicle when it is estimated that the vehicle has illegally moved;
The vehicle unauthorized movement estimation device according to claim 1, wherein the vehicle unauthorized movement estimation device is provided.

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