JP2006065590A - Vehicular monitoring system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent an erroneous determination by reliably discriminating a vibration caused by an illegal act on a vehicle and a vibration caused except by an illegal act independently of information from another vehicle. <P>SOLUTION: When a vibration detection device 2 of an on-vehicle monitoring system 1 senses a vibration of an associated vehicle, a short range wireless device 3 sends the data to a central monitoring system 10. A central processing unit 13 of the central monitoring system 10 compares the vibration data from the on-vehicle monitoring system 1 received via a short range wireless device 12 with vibration data from a vibration detection device 11 installed in a structure and, if the difference between the magnitude of the vehicle vibration and the magnitude of the structure vibration is equal to or larger than a preset value, determines that an illegal act has vibrated the vehicle abnormally, and actuates an alarm device 14 to raise an alarm. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle monitoring system that detects vibrations of a vehicle and monitors abnormalities caused by an illegal act on the vehicle.

  2. Description of the Related Art Conventionally, as a security system for preventing theft of a vehicle, there is a system in which a vibration sensor is mounted on a vehicle, and an operation such as detecting a vibration caused by an action for stealing the vehicle and issuing an alarm by the vibration sensor. Has been developed. In such a theft prevention system based on vibration detection, in order to improve reliability, it is necessary to reliably distinguish vibrations caused by fraudulent acts such as theft purposes for vehicles and vibrations caused by earthquakes or construction.

For example, in Patent Document 1, when vibration is detected in a certain vehicle (target vehicle), based on the detection result of vibration in another vehicle and the time at which each vibration was detected, A technique is disclosed that prevents misjudgment by determining whether the vibration is caused by a theft precaution performed on the vehicle or the environment in which the vehicle is placed. Yes.
JP 2003-63356 A

  However, since the technology disclosed in Patent Document 1 uses vibration information of a plurality of vehicles, another vehicle including a vibration sensor must be stopped in the vicinity of the vehicle to be monitored. The system is not usable.

  That is, the technique disclosed in Patent Document 1 is effective in a place where a large number of vehicles are always stopped, such as a car exhibition hall, but depends on information from other vehicles. For example, it is difficult to apply to a case where a large number of vehicles frequently come and go like a parking lot in a shopping mall or a case where there is only one vehicle such as a garage of a private house.

  The present invention has been made in view of the above circumstances, and reliably identifies vibrations caused by fraudulent acts on the vehicle and vibrations caused by other causes that are not caused by fraudulent actions without depending on information from other vehicles. An object of the present invention is to provide a vehicle monitoring system capable of preventing erroneous determination.

  In order to achieve the above object, a vehicle monitoring system according to the present invention is a vehicle monitoring system that detects vibrations of a vehicle and monitors abnormalities caused by illegal acts on the vehicle. An in-vehicle monitoring system including a mobile station for wirelessly transmitting data; and a central monitoring system including a fixed station capable of wireless communication with the mobile station within the monitoring area of the vehicle. Vibration detection means for detecting vibration of a structure fixedly installed in the area, vibration data of the vehicle acquired via the mobile station and the fixed station, and vibration of the structure detected by the vibration detection means And an abnormality determining means for determining the occurrence of an abnormality of the vehicle based on the data.

  The vehicle monitoring system according to the present invention can reliably discriminate vibrations caused by fraudulent acts on vehicles and vibrations caused by other causes not caused by frauds without depending on information from other vehicles, A flexible system can be constructed while preventing erroneous determination and improving reliability.

  Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 relate to a first embodiment of the present invention, FIG. 1 is an overall configuration diagram of a vehicle monitoring system, and FIG. 2 is a flowchart of an abnormality monitoring routine.

  The vehicle monitoring system shown in FIG. 1 is installed on an in-vehicle monitoring system 1 mounted on the vehicle side and on a structure side such as a monitoring station or a house in a parking lot of an apartment house or a shopping mall, a garage of a private house, or the like. The central monitoring system 10 is configured to monitor at least one or more vehicles by the central monitoring system 10 to detect vibrations caused by fraudulent acts on individual vehicles and prevent theft. In addition, the vehicle in this specification includes various forms of vehicles such as passenger cars, trucks, buses, motorcycles, and bicycles.

  The in-vehicle monitoring system 1 includes a vibration detection device 2 that detects vibration of the host vehicle and a short-range wireless device 3 that performs short-range wireless communication with the central monitoring system 10. The vibration detection device 2 is configured with an on-board vibration sensor as the center. When the vibration of the host vehicle is sensed, the magnitude of the sensed vibration is recorded, and the data is transmitted from the short-range wireless device 3.

  The short-range wireless device 3 is a mobile station mounted on a vehicle, and is a device suitable for wireless communication at a relatively short distance, such as a housing complex or a parking lot in a shopping mall. As such a short-range wireless device, for example, a license-free wireless station using the 2.4 GHz ISM (Industrial Science Medical) band, and as a spread modulation method for wireless communication, a direct spread method or a frequency hopping method is used. A device using spread spectrum technology is employed. In particular, when applied to a garage of a private house or a narrow area where the number of parked vehicles is small, a wireless communication device of the Bluetooth standard of the frequency hopping method can be easily used.

  On the other hand, the central monitoring system 10 includes a vibration detection device 11 that detects the vibration of the structure, a short-range wireless device 12 that is a fixed station with respect to the short-range wireless device 3 of the in-vehicle monitoring system 1, and vibration information from both systems. A central processing unit 13 for determining an abnormality by comparison and an alarm device 14 for issuing an alarm upon receiving the abnormality determination by the central processing unit 13 are provided.

  The vibration detection device 11 is configured with a vibration sensor installed in the structure of the central monitoring system 10 as a center. When the vibration of the structure is sensed, data of the magnitude of the sensed vibration is output to the central processing device 13. The short-range wireless device 12 is configured in the same manner as the short-range wireless device 3 on the vehicle-mounted monitoring system 1 side, receives vibration data transmitted from the short-range wireless device 3 on the vehicle-mounted monitoring system 1 side, and sends it to the central processing unit 13. Output. Communication between the in-vehicle monitoring system 1 and the central monitoring system 10 is started when the vehicle enters a communicable area with the central monitoring system 10, and is sensed after the driving of the vehicle is stopped and the driver leaves the vehicle. The vehicle vibration data is transmitted to the central monitoring system 10.

  The central processing unit 13 is constituted by a microprocessor or the like, and receives vibration data from the vibration detection device 11 provided in its own system and vibration data from the in-vehicle monitoring system 1 received via the short-range wireless device 12. In comparison, if the difference between the magnitude of vibration on the vehicle side and the magnitude of vibration on the structure side is greater than or equal to a preset value (including the case where there is vibration only on the vehicle side), abnormal vibration due to fraud Is acted on the vehicle, and the alarm device 14 is activated to issue an alarm by voice or light.

  In FIG. 1, the central monitoring system 10 includes the alarm device 14, but both the in-vehicle monitoring system 1 and the central monitoring system 10 may include the alarm device, or the central monitoring system 10 May not be provided with an alarm device, but may be provided with an alarm device on the in-vehicle monitoring system 1 side. As the alarm device on the in-vehicle monitoring system 1 side, a dedicated device for generating an alarm against theft may be used, or an existing horn or the like may be used.

  Moreover, it is desirable that devices other than the vibration detection device 2 on the vehicle-mounted monitoring system 1 side (short-range wireless device 3, alarm device, etc.) have a sleep function, and the sleep is canceled by vibration. This sleep function can reduce dark current during parking and suppress power consumption.

  The monitoring of the vehicle in the central monitoring system 10 is specifically implemented by the program processing shown in the flowchart of FIG. Hereinafter, the vehicle monitoring process will be described with reference to the flowchart of FIG.

  The flowchart in FIG. 2 mainly shows processing in the central processing unit 13 and is performed at predetermined time intervals or predetermined intervals for individual vehicles that have entered the communication area and have established a connection between the mobile station and the fixed station. An abnormal monitoring routine is shown. When this routine is started, first, in step S1, it is checked whether or not the vehicle to be monitored has a vibration of a level equal to or higher than a set value by data communication with the in-vehicle monitoring system 1 of the vehicle.

  The set value defines the output level (that is, zero level) of the vibration sensor that can be regarded as no vibration when no intentional external force is applied to the vehicle. It has been decided. Since this set value is a value peculiar to each vehicle, when vibration greater than the set value is detected on the in-vehicle monitoring system 1 side, the data may be transmitted to the central monitoring system, or The detected vibration data and its own set value may be transmitted to the central monitoring system 10.

  If there is no vibration of a level equal to or higher than the set value, the process proceeds from step S1 to step S5, where it is determined that there is no abnormality in the corresponding vehicle, and the routine is exited. Further, if there is vibration at a level equal to or higher than the set value, the process proceeds from step S1 to step S2, and it is checked whether the structure has vibration based on the output of the vibration sensor installed in the structure. In step S2, if there is no vibration in the structure, that is, if vibration is detected only on the vehicle side, the process proceeds to step S4, where it is determined that abnormal vibration due to fraud has acted on the vehicle, and the alarm device 14 is reached. In the case of outputting an alarm for occurrence of an abnormality and operating an alarm device on the vehicle side, an abnormality determination result is sent from the short-range wireless device 12 to the vehicle side via the short-range wireless device 3 of the in-vehicle monitoring system 1. Notify and activate the vehicle alarm device or horn.

  On the other hand, if there is vibration in the structure in step S2, the process proceeds from step S2 to step S3, and it is checked whether or not the difference between the magnitude of the vibration on the vehicle side and the magnitude of the vibration on the structure side is greater than or equal to a threshold value. This threshold value is set in advance in consideration of the difference in shape and characteristics between the vehicle and the structure, and is generated in the structure and vibration generated in the vehicle due to external forces due to strong winds, earthquakes or ground shaking due to construction. It defines the maximum difference from vibration.

  As a result, if the difference between the magnitude of the vibration on the vehicle side and the magnitude of the vibration on the structure side is smaller than the threshold value, the process proceeds to step S5 and it is determined that there is no abnormality, and the magnitude of the vibration on the vehicle side and the structure side vibration are determined. If the difference from the magnitude of the vibration is greater than or equal to the threshold value, the process proceeds to step S4, where it is determined that abnormal vibration due to fraud has acted on the vehicle, and the output to the alarm device 14 and notification of the abnormality determination result to the vehicle side are performed. Exit the routine.

  As described above, in the present embodiment, the in-vehicle monitoring system 1 and the central monitoring system 10 are connected by wireless communication, the vibration detected on the in-vehicle monitoring system 1 side, and the vibration detected on the central monitoring system 10 side. By comparing these, vibrations caused by fraudulent acts on the vehicle and vibrations caused by other causes not caused by fraudulent acts are discriminated. Therefore, without depending on information from other vehicles, it is possible to reliably discriminate vibrations caused by fraudulent acts on vehicles from vibrations caused by other causes that are not caused by fraudulent acts, thereby preventing misjudgment and trusting them. Can be improved.

  In addition, since it does not use information on other vehicles, it can be applied to places where many vehicles frequently enter and exit, such as parking lots in shopping malls, and garages in private houses. Can be built.

  Next, a second embodiment of the present invention will be described. FIGS. 3 and 4 relate to a second embodiment of the present invention, FIG. 3 is an overall configuration diagram of the vehicle monitoring system, and FIG. 4 is a flowchart of an abnormality monitoring routine.

  In the second mode, both the in-vehicle monitoring system 1 and the central monitoring system 10 in the first mode described above have a function of measuring the time when the vibration is felt, and the time when the vibration is felt is compared. Is determined.

  For this reason, as shown in FIG. 3, the vehicle monitoring system of the second form includes an in-vehicle monitoring system 1 </ b> A in which the time detection device 4 is added to the in-vehicle monitoring system 1 of the first form, and a central monitoring system 10 of the first form. And a central monitoring system 10A to which a time detection device 15 is added.

  The time detection device 4 of the in-vehicle monitoring system 1A and the time detection device 15 of the central monitoring system 10A are synchronized with each other, and the vibration on the vehicle side and the vibration on the structure side are detected at the same time. The synchronization processing of the time detection devices 4 and 15 is carried out by performing prior communication between the in-vehicle monitoring system 1A of the vehicle and the central monitoring system 10A when the vehicle enters the fixed station communication area. The detection devices 4 and 15 are synchronized with each other to correct the time data difference.

  The monitoring of the vehicle in the central monitoring system 10A is performed according to the abnormality monitoring routine shown in the flowchart of FIG. That is, first, in step S11, it is checked whether or not the vehicle to be monitored has a vibration having a level equal to or higher than a set value by data communication with the vehicle monitoring system 1.

  If there is no vibration at a level equal to or higher than the set value on the vehicle side, the process proceeds from step S11 to step S18, where it is determined that there is no abnormality in the corresponding vehicle, and the routine is exited. Further, when there is vibration at a level equal to or higher than the set value on the vehicle side, the process proceeds from step S11 to step S12 to detect the duration of vibration generated on the vehicle side, and in step S13, the vibration installed in the structure. Based on the output of the sensor, it is checked whether the structure has vibration. When there is no vibration in the structure, that is, when vibration is detected only on the vehicle side, the process proceeds from step S13 to step S17, and it is determined that abnormal vibration due to fraud has acted on the vehicle. The routine is exited by reporting the output to the vehicle and reporting the abnormality determination result to the vehicle side.

  On the other hand, if there is vibration in the structure in step S13, the process proceeds from step S13 to step S14, and the duration of vibration generated on the structure side is detected. Next, the process proceeds to step S15 to check whether or not the difference between the magnitude of vibration on the vehicle side and the magnitude of vibration on the structure side is equal to or greater than a threshold value. As a result, if the difference between the magnitude of the vibration on the vehicle side and the magnitude of the vibration on the structure side is smaller than the threshold value, the process proceeds from step S15 to step S18 to determine that there is no abnormality, and the magnitude and structure of the vehicle side vibration. When the difference with the magnitude | size of the vibration of an object side is more than a threshold value, it progresses to step S16 from step S15.

  In step S16, it is checked whether or not the vibration generation times coincide on the vehicle side and the structure side. If the vibration occurrence times are the same on the vehicle side and the structure side, the process proceeds to step S18, and it is determined that there is no abnormality due to strong wind or an external force due to an earthquake or construction. If the vibration generation time does not match between the vehicle side and the structure side, the process proceeds from step S16 to step S17, and it is determined that abnormal vibration due to fraud has acted on the vehicle. Report the abnormality judgment result to the side and exit the routine.

  In the above processing, as in the first embodiment, it is checked in step S15 whether or not the difference between the magnitude of vibration on the vehicle side and the magnitude of vibration on the structure side is greater than or equal to a threshold value. This process can be omitted.

  Also in the second mode, as in the first mode described above, without depending on the information from other vehicles, the vibrations caused by the fraudulent acts on the monitoring vehicle and the vibrations caused by other causes that are not caused by the fraudulent acts are ensured. It is possible to discriminate, and it is possible to prevent erroneous determination and improve reliability.

  Next, a third embodiment of the present invention will be described. 5 and 6 relate to a third embodiment of the present invention, FIG. 5 is an overall configuration diagram showing an example interlocked with a vehicle antitheft device, and FIG. 6 shows an example interlocked with a vehicle key system. FIG.

  In the third mode, an example in which the vehicle-side system configuration is changed to the central monitoring system 10 described in the first mode or the central monitoring system 10A described in the second mode is applied.

  FIG. 5 shows an example in which the vehicle-side system is a system including an alarm device 5 and an antitheft device 6 for the in-vehicle monitoring system 1A. The central monitoring system 10A (the central monitoring system described in the first embodiment) 10), the determination result is transmitted from the short-range wireless device 12 to the short-range wireless device 3 on the vehicle side, and the alarm device 5 is activated to issue an alarm. The anti-theft device 6 is activated. Further, when the communication module 7 is provided (in-vehicle monitoring system 1B), the driver is notified of the abnormality via the communication module 7.

  The anti-theft device 6 is, for example, an immobilizer (electronic movement lock device), and receives an abnormality notification from the central monitoring system 10A to disable the traveling of the vehicle. In FIG. 5, the communication module 7 is a communication module for a mobile phone. Upon receiving an abnormality notification from the central monitoring system 10A, the communication module 7 transmits an abnormality occurrence to the driver's mobile phone 20 or an e-mail address. Notice. The communication module 7 is a communication means capable of performing wireless communication beyond the communicable range of the short-range wireless device 3 that is a mobile station. However, when applied to a garage of an individual house, the short-range wireless device 3 may be substituted, and it is also possible to notify the user of the occurrence of an abnormality in conjunction with an alarm device in the house or a parent / child phone.

  FIG. 6 shows an example of an in-vehicle monitoring system 1C in which an alarm device 5 and a key system 8 are added to the in-vehicle monitoring system 1A. In the system of FIG. 6, the operation of the central monitoring system 10A (or the central monitoring system 10 described in the first embodiment) may be linked to the vehicle key system 8, and the key system 8 has a driver. A contact type key system such as a mechanical key or a fingerprint authentication device, or a non-contact type key system such as a keyless entry system or a smart key system can be employed.

  When the vehicle is unlocked by the key system 8, vibration associated with unlocking is detected by the vibration detection device 2, and this vibration detection information is obtained when it is determined that the vehicle is properly unlocked with a predetermined delay period. The monitoring function is canceled by not transmitting to the fixed station (the central monitoring system 10A or the short-range wireless device 12 of the central monitoring system 10).

  Alternatively, in the in-vehicle monitoring system 1C, when the unlocking vibration by the key system 8 is detected, the vibration information is immediately transmitted to the fixed station, and then the normal opening based on the determination result that the unlocking is normal by the follow-up communication. A lock signal may be transmitted. In this case, in the central monitoring system 10A (central monitoring system 10), even if it is determined that there is an abnormality by comparing the vibration information resulting from unlocking from the in-vehicle monitoring system 1C with its own vibration information, an alarm is issued. Is provided with a delay period, and during this delay period, a normal unlocking signal transmitted from the in-vehicle monitoring system 1C is followed and determined as normal, and the alarm is released.

  Furthermore, the central monitoring system 10A (the central monitoring system 10) does not include the alarm device 14, and when performing alarm on the vehicle side, when the unlocking vibration by the key system 8 is detected by the in-vehicle monitoring system 1C, Even if the vibration information is transmitted to the fixed station, and the judgment result that the abnormality is transmitted from the central monitoring system 10A (central monitoring system 10) to the vehicle side, the vehicle side is in the normal unlocking state by the key system 8 in the meantime. It may be determined that there is a warning and no alarm is issued.

  In each of the above examples, it is desirable that a device other than the vibration detection device 2 has a sleep function.

  In the third embodiment, in addition to the effects of the first and second embodiments described above, a more advanced system can be realized by combining various functions on the vehicle side.

FIG. 1 is an overall configuration diagram of a vehicle monitoring system according to a first embodiment of the present invention. Same as above, flowchart of abnormality monitoring routine An overall configuration diagram of a vehicle monitoring system according to a second embodiment of the present invention. Same as above, flowchart of abnormality monitoring routine The whole block diagram which shows the example linked with the antitheft device of a vehicle concerning 3rd Embodiment of this invention. Same as above, overall configuration diagram showing an example of interlocking with the vehicle key system

Explanation of symbols

1, 1A, 1B, 1C In-vehicle monitoring system 2 Vibration detection device 3 Short-range wireless device 4 Time detection device 5 Alarm device 6 Anti-theft device 7 Communication module 8 Key system 10, 10A Central monitoring system 11 Vibration detection device 12 Short-range wireless Device 13 Central processing unit 14 Alarm device 15 Time detection device
Agent Patent Attorney Susumu Ito

Claims (7)

In a vehicle monitoring system that detects abnormalities caused by fraudulent acts on a vehicle by detecting the vibration of the vehicle,
An in-vehicle monitoring system equipped with a mobile station mounted on the vehicle and wirelessly transmitting vibration data of the vehicle;
A central monitoring system comprising a fixed station capable of wireless communication with the mobile station within the vehicle monitoring area;
In the central monitoring system,
Vibration detecting means for detecting vibration of a structure fixedly installed in the monitoring area;
Abnormality determination means for determining occurrence of abnormality in the vehicle based on vibration data of the vehicle acquired via the mobile station and the fixed station and vibration data of the structure detected by the vibration detection means; A vehicle monitoring system comprising the vehicle. The abnormality determination means is
2. The vehicle monitoring system according to claim 1, wherein when the difference between the magnitude of the vibration of the vehicle and the magnitude of the vibration of the structure is equal to or greater than a threshold, it is determined that an abnormality has occurred. The abnormality determination means is
2. The vehicle monitoring system according to claim 1, wherein when the generation time of the vibration of the vehicle is different from the generation time of the vibration of the structure, it is determined that an abnormality has occurred.   2. The vehicle according to claim 1, wherein at least one of the on-vehicle monitoring system side and the central monitoring system side is provided with alarm means for generating an alarm in response to determination of occurrence of abnormality by the abnormality determination means. Monitoring system. The in-vehicle monitoring system includes a key system that detects that the vehicle is normally unlocked,
5. The vehicle monitoring system according to claim 4, wherein when the unlocking of the vehicle is detected by the key system, the alarm means is not activated. The in-vehicle monitoring system includes an anti-theft device that disables traveling of the vehicle,
The abnormality determination means is
When it is determined that an abnormality has occurred in the vehicle, the vehicle monitoring system is notified of the abnormality via the fixed station and the mobile station,
The in-vehicle monitoring system is
2. The vehicle monitoring system according to claim 1, wherein when receiving an abnormality notification from said abnormality determining means, said anti-theft device is activated to make said vehicle unable to travel. The abnormality determination means is
When it is determined that an abnormality has occurred in the vehicle, the vehicle monitoring system is notified of the abnormality via the fixed station and the mobile station,
The in-vehicle monitoring system is
When an abnormality notification is received from the abnormality determining means, the abnormality is notified to the user of the vehicle via the mobile station or a communication means capable of wireless communication beyond the communicable range of the mobile station. The vehicle monitoring system according to claim 1.

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