GB2070833A - Vehicle security system - Google Patents
Vehicle security system Download PDFInfo
- Publication number
- GB2070833A GB2070833A GB8007024A GB8007024A GB2070833A GB 2070833 A GB2070833 A GB 2070833A GB 8007024 A GB8007024 A GB 8007024A GB 8007024 A GB8007024 A GB 8007024A GB 2070833 A GB2070833 A GB 2070833A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vehicle
- sensors
- triggered
- fitting
- sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/10—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles actuating a signalling device
- B60R25/1004—Alarm systems characterised by the type of sensor, e.g. current sensing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/12—Occupant safety arrangements or fittings, e.g. crash pads which protect the occupants against personal attack from the inside or the outside of the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/10—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles actuating a signalling device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/10—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles actuating a signalling device
- B60R25/1004—Alarm systems characterised by the type of sensor, e.g. current sensing means
- B60R25/1009—Sonic sensors; Signal treatment therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/10—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles actuating a signalling device
- B60R25/102—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles actuating a signalling device a signal being sent to a remote location, e.g. a radio signal being transmitted to a police station, a security company or the owner
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/10—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles actuating a signalling device
- B60R25/1003—Alarm systems characterised by arm or disarm features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/10—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles actuating a signalling device
- B60R25/1018—Alarm systems characterised by features related to the general power supply
Abstract
In order to guard against "booby trapping" of a vehicle by means of an explosive device, the vehicle is fitted with four microwave detectors, in the vicinity of each wheel arch, eight vibration detectors disposed at critical points within the vehicle, an ultrasonic detector within the passenger compartment and switches on the doors, bonnet and boot lid. The outputs of all these sensors are connected to a central microprocessor within the vehicle. In the event of the vehicle being tampered with, one or more of the sensors will be triggered, and an alarm signal will be transmitted by a v.h.f. transmitter associated with the microprocessor. This alarm signal may be picked up by a receiver at a point remote from the vehicle. A display is provided within the vehicle which is repeatedly cycled when the system is enabled, and which, when one of the sensors is triggered, continuously displays a symbol identifying the triggered sensor. <IMAGE>
Description
SPECIFICATION
Vehicle security system
This invention relates to a vehicle security system, and is more particularly, but not exclusively, concerned with a system for safeguarding a parked vehicle against "booby trapping" by means of an explosive device intended to explode when the engine of the vehicle is started orthe vehicle is set in motion, for example.
Security systems for cars are known which provide an alarm when the car is entered by an unauthorised person or when such a person attempts to start the engine of the car. Such systems are mainly intended to prevent the car being stolen.
However, recent years have seen the extension of terrorist activities to include the "booby trapping" of cars by means of explosive devices. Such devices may be wired into the ignition systen of a car so as to explode when the engine is started. Alternatively more sophisticated devices may be attached to the petrol tank of the car or placed on top of the tyres, these devices being triggered by vibration when the car is set in motion. Clearly the placing of these explosive devices need not involve entry into the passenger compartment of the car and so the conventional security systems referred to above will be ineffective in safeguarding against such tampering. This invention provides a vehicle security system which may be used to safeguard a vehicle against such tampering.
According to the invention, there is provided a vehicle security system including a plurality of sensors for fitting in various locations within a vehicle, and a microprocessor also for fitting within the vehicle and adapted to emit an electrical alarm signal in response to actuation signals from the sensors caused by tampering with the vehicle with the system in the enabled condition.
The invention also provides a vehicle, and more particularly, but not exclusively, a car, fitted with such a security system. The sensors may be fitted behind the trim of the main body panels and also in or near the engine compartment, the boot, the sills, the chassis members, the exhaust system, the wheel arches and the petrol tank.
The system may include a respective sensor for fitting to the vehicle in the vicinity of each wheel arch for detecting the introduction of a foreign object into the space between the wheel arch and the associated wheel. These sensors are preferably adapted to sense the motion of a foreign object. For example each wheel arch sensor may be a microwave motion detector which, in use, emits a beam of microwave radiation and detects the microwave radiation which is reflected by any objects on which the beam is incident. The detector is triggered by a doppler shift in the frequency of the reflected radiation as compared with the frequency of the incident radiation due to motion of a reflecting object.The shift which is detected may be either a shift in the frequency of the overall waveform of the radiation or a shift in the frequency of modulation of a carrier waveform. The microwave motion detector may be fixed frequency
Gunn-effect oscillator in which a single Gunn diode serves to both emit and detect microwave radiation, and preferably utilises microwave radiation having a frequency above 18GHz, for example about 24GHz in which case the detected frequency shift will be about 72 Hz for each mile per hour of the reflected object. Each microwave motion detector is conveniently fitted above a respective wheel arch through which a hole is bored for the passage of the microwave beam.
The system may also include a plurality of vibration detectors for fitting at a number of critical points distributed within the vehicle. For example, eight such detectors may be provided, of which one is attached to one of the stabilising bars of the front suspension, a respective one is attached to each side of the buikhead separating the passenger compartment from the engine compartment, a respective one is attached to the floor pan under each of the front seats, a respective one is attached to each side of the bulkhead separating the passenger compartment from the boot, and one is attached to the floor of the boot above the petrol tank. However, the number of such detectors used and their positions will depend on the particular type and make of vehicle to which the system is to be fitted.These vibration detectors may be piezo-ceramic accelerometers, for example of a type in which charge is generated by compression of a piezo-ceramic element, the charge sensitivity being about 20 pC/g.
The system may further include one or more sensors for fitting within the passenger compartment of the vehicle for detecting the introduction of a foreign object into the passenger compartment, for example the introduction of an explosive device through an open window. The or each such sensor is preferably adapted to sense the motion of a foreign object and may be, for example, an ultrasonic motion detector which emits a beam of ultrasonic radiation and detects the ultrasonic radiation which is reflected by any objects on which the beam is incident. The detector is triggered by a doppler shift in the frequency of the reflected radiation as compared with the frequency of the incident radiation due to motion of a reflecting object.
Advantageously the system also includes sensors, for example switches, for fitting to the vehicle doors, the bonnet and the boot lid for detecting opening thereof. Additionally the system may be adapted to be triggered by operation of the courtesy light of the vehicle.
The invention further provides a micro-processor programmed to emit an alarm signal in resonse to actuation signals from the sensors of such a system caused by tampering with the vehicle with the system in the enabled condition. There is preferably associated with the microprocessor a transmitter for transmitting an alarm signal when the system is triggered. This alarm signal may then be picked up at a point remote from the vehicle by a corresponding receiver. For example the transmitter and receiver may be a v.h.f. transmitter and receiver. Alternatively they may be an infrared transmitter and receiver.
In a simplified version the transmitter may be adapted to emit an audible alarm in which case a receiver is unecessary.
In addition a display unit is preferably provided for fitting within the passenger compartment of the vehicle for indicating which sensor or sensors have beebn actuated when the system is triggered. A similar unit may be provided in the receiver for remote monitoring of the system. The display unit may include a HEX display, that is a display for indicating symbols consisting of the numbers 0 to 9 and the letters Ato F each symbol being associated with a respective sensor or set of sensors of the system. When the system is enabled, the display may be caused to repeatedly cycle from 0 to F, triggering of a particular sensor or set of sensors being indicated by discontinuation of the cycling with the symbol associated with the triggered sensor or set of sensors being displayed continuously.
Where two or more sensors associated with two or more symbols have been triggered, the display may be caused to display the appropriate symbols in sequence with respect to time, the sequence being continually repeated.
The system may include a test facility in the microprocessor software enabling cycling of the display to provide a rapid check that the system does not contain any faults prior to the system being enabled. A high security switch may be provided either internally or externally of the vehicle for enabling and disabling of the system. Of course it is important that it should be possible to enable the system without triggering the system. To this end, therefore, the system may be so arranged that actuation of at least some of the sensors will not trigger an alarm signal for a predetermined period after enabling of the system.For example, where the high security switch is in the passenger compartment, the ultrasonic motion detector, the vibration detectors and the sensors associated with the doors and the courtesy light may continue to be disabled for a period of 10 seconds after enabling of the system to enable the operator to leave the vehicle.
However it may be considered desirable not to disable the sensor associated with the boot lid during this period if the microprocessor and associated circuitry is installed in the boot.
The microprocessor is preferably programmed such that it will not trigger an alarm signal due to sway of the vehicle in response to passing traffic or a gust of wind, or due to the car being parked on a steep gradient or camber. This may be achieved by storing within the microprocessor memory the detection patterns which have been found by experiment to be caused by such events. For example, the microprocessor may be programmed such that simultaneous actuation of two microwave motion detectors such as may be caused by a gust of wind will not trigger the system.
It should be understood that there are many other types of sensor which could be used in such a system. For example infrared motion detectors could be used to detect moving objects in the pasenger compartment or under the wheel arches.
Also inertial switches could be used as the vibration detectors.
A preferred embodiment of the system of the invention is illustrated, by way of example, in the accompanying drawings.
Claims (26)
1 A vehicle security system including a plurality of sensors for fitting in various locations within a vehicle, and a microprocessor also for fitting within the vehicle and adapted to emit an electrical alarm signal in response to actuation signals from the sensors caused by tampering with the vehiclse with the system in the enabled condition.
2. A system according to claim 1, including a respective wheel arch sensor for fitting to the vehicle in the vicinity of each wheel arch for detecting the introduction of a foreign object into the space between the wheel arch and the associated wheel.
3. A system according to claim 2, wherein the wheel arch sensors are adapted to sense the motion of a foreign object.
4. A system according to claim 3, wherein each wheel arch sensor is a microwave motion detector which, in use, emits a beam of microwave radiation and detects the microwave radiation which is reflected by any object on which the beam is incident.
5. A system according to claim 4, wherein the microwave motion detector is a fixed frequency
Gunn-effect osciliator in which a single Gunn diode serves to both emit and detect microwave radiation.
6. A system according to any preceding claim, including a plurality of vibration detectors for fitting at a number of critical points distributed within the vehicle.
7. A system according to claim 6, wherein the vibration detectors are piezo-ceramic accelerometers.
8. A system according to any preceding claim, including one or more passenger compartment sensors for fitting within the passenger compartment of the vehicle for detecting the introduction of a foreign object into the passenger compartment.
9. A system according to claim 8, wherein the or each passenger compartment sensor is adapted to sense the motion of a foreign object.
10. A system according to claim 9, wherein the or each passenger compartment sensor is an ultrasonic motion detector which, in use, emits a beam of ultrasonic radiation and detects the ultrasonic radiation which is reflected by any object on which the beam is incident.
11. A system according to any preceding claim, including sensors for fitting to the vehicle doors, the bonnet and the boot lid for detecting opening thereof.
12. A system according to any preceding claim, which is adapted to be triggered by operation of the coutesy light of the vehicle.
13. Asystem according to any preceding claim, including a transmitter for transmitting an alarm signal when the system is triggered.
14. A system according to claim 13, further including a receiver adapted to pick up the transmitted alarm signal at a point remote from the vehicle.
15. A system according to claim 14, wherein the receiver is provided with a display unit for indicating which sensor or sensors have been actuated when the system is triggered.
16. A system according to claim 13, 14 or 15, wherein the transmitter is a v.h.f. transmitter.
17. A system according to claim 13, 14 or 15, wherein the transmitter is an infrared transmitter.
18. A system according to claim 13, wherein the transmitter is adapted to emit an audible alarm.
19. A system according to any preceding claim, wherein a display unit is provided for fitting within the passenger compartment of the vehicle for indicating which sensor or sensors have been actuated when the system is triggered.
20. A system according to claim 19, wherein, when the system is enabled, the display unit is caused to repeatedly cycle, triggering one of the sensors being indicated by discontinuation of the cycling with a symbol associated with the triggered sensor being displayed continuously.
21. A system according to claim 19 or 20, including a test facility in the microprocessor software enabling cycling of the display unit to provide a rapid check that the system does not contain any faults prior to the system being enabled.
22. A system according to any preceding claim, wherein a high security switch is provided either internally or externally of the vehicle for enabling and disabling of the system.
23. A system according to any preceding claim, wherein the system is so arranged that actuation of at least some of the sensors will not trigger an alarm signal for a predetermined period after enabling of the system.
24. A system according to any preceding claim, wherein the microprocessor is programmed such that it will not trigger an alarm signal due to sway of the vehicle in response to passing traffic or a gust of wind, or due to the car being parked on a steep gradient or camber.
25. A vehichle security system substantially as illustrated in the accompanying drawings.
26. A vehicle fitted with a security system according to any preceding claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8007024A GB2070833A (en) | 1980-02-29 | 1980-02-29 | Vehicle security system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8007024A GB2070833A (en) | 1980-02-29 | 1980-02-29 | Vehicle security system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2070833A true GB2070833A (en) | 1981-09-09 |
Family
ID=10511791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8007024A Withdrawn GB2070833A (en) | 1980-02-29 | 1980-02-29 | Vehicle security system |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2070833A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2137385A (en) * | 1983-03-31 | 1984-10-03 | Colin Spencer Todd | Vehicle fire and/or intruder detection system |
| FR2559440A1 (en) * | 1984-02-09 | 1985-08-16 | Caussat Lucien | Anti-theft alarm device for vehicles |
| GB2167587A (en) * | 1984-11-23 | 1986-05-29 | Philip George Johnson | Improvements in or relating to intruder alarms |
| GB2217494A (en) * | 1988-04-13 | 1989-10-25 | John Chilton | Intruder alarm system |
| GB2223870A (en) * | 1988-09-22 | 1990-04-18 | David William Shipley | Security apparatus |
| GB2224146A (en) * | 1988-10-22 | 1990-04-25 | Roy Kenneth Hammond | Intruder alarm system |
| EP0388756A2 (en) * | 1989-03-24 | 1990-09-26 | Vincenzo Di Dio Russo | Vehicle antitheft device with means for remotely indicating a break-in attempt |
| GB2244163A (en) * | 1990-04-18 | 1991-11-20 | Krypton Car Security Limited | Security device |
| GB2263005A (en) * | 1992-01-06 | 1993-07-07 | Vecta Ltd | Vehicle protection system. |
| WO1993016400A1 (en) * | 1992-02-10 | 1993-08-19 | Frederick Nicholas Byrne | Detector |
| GB2308214A (en) * | 1995-12-16 | 1997-06-18 | Paul Yang | Vehicle alarm |
| ES2110361A1 (en) * | 1995-06-15 | 1998-02-01 | Nu Ez Centa O Antonio Ricardo | Multi-function remote call/alarm equipment, which is compact and personalized, for parked vehicles |
| WO2006071198A1 (en) * | 2004-12-30 | 2006-07-06 | Singapore Technologies Dynamics Pte Ltd | Remote explosives/bomb detection system with proximity sensors |
| CN100414569C (en) * | 2005-02-07 | 2008-08-27 | 青岛海尔数码智能科技有限公司 | Wireless safety pre-alarming device of vehicle |
| CN106627481A (en) * | 2017-01-18 | 2017-05-10 | 无锡猎吧网络科技有限公司 | Vehicle identification system intelligent control part |
-
1980
- 1980-02-29 GB GB8007024A patent/GB2070833A/en not_active Withdrawn
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2137385A (en) * | 1983-03-31 | 1984-10-03 | Colin Spencer Todd | Vehicle fire and/or intruder detection system |
| FR2559440A1 (en) * | 1984-02-09 | 1985-08-16 | Caussat Lucien | Anti-theft alarm device for vehicles |
| GB2167587A (en) * | 1984-11-23 | 1986-05-29 | Philip George Johnson | Improvements in or relating to intruder alarms |
| GB2217494A (en) * | 1988-04-13 | 1989-10-25 | John Chilton | Intruder alarm system |
| GB2223870B (en) * | 1988-09-22 | 1992-06-03 | David William Shipley | Security apparatus |
| GB2223870A (en) * | 1988-09-22 | 1990-04-18 | David William Shipley | Security apparatus |
| GB2224146A (en) * | 1988-10-22 | 1990-04-25 | Roy Kenneth Hammond | Intruder alarm system |
| EP0388756A2 (en) * | 1989-03-24 | 1990-09-26 | Vincenzo Di Dio Russo | Vehicle antitheft device with means for remotely indicating a break-in attempt |
| EP0388756A3 (en) * | 1989-03-24 | 1991-09-11 | Vincenzo Di Dio Russo | Vehicle antitheft device with means for remotely indicating a break-in attempt |
| GB2244163A (en) * | 1990-04-18 | 1991-11-20 | Krypton Car Security Limited | Security device |
| GB2263005A (en) * | 1992-01-06 | 1993-07-07 | Vecta Ltd | Vehicle protection system. |
| WO1993016400A1 (en) * | 1992-02-10 | 1993-08-19 | Frederick Nicholas Byrne | Detector |
| US5591916A (en) * | 1992-02-10 | 1997-01-07 | Byrne; Frederick N. | Foreign object detector for vehicles and other machinery |
| ES2110361A1 (en) * | 1995-06-15 | 1998-02-01 | Nu Ez Centa O Antonio Ricardo | Multi-function remote call/alarm equipment, which is compact and personalized, for parked vehicles |
| GB2308214A (en) * | 1995-12-16 | 1997-06-18 | Paul Yang | Vehicle alarm |
| WO2006071198A1 (en) * | 2004-12-30 | 2006-07-06 | Singapore Technologies Dynamics Pte Ltd | Remote explosives/bomb detection system with proximity sensors |
| CN100414569C (en) * | 2005-02-07 | 2008-08-27 | 青岛海尔数码智能科技有限公司 | Wireless safety pre-alarming device of vehicle |
| CN106627481A (en) * | 2017-01-18 | 2017-05-10 | 无锡猎吧网络科技有限公司 | Vehicle identification system intelligent control part |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |