GB2308214A - Vehicle alarm - Google Patents
Vehicle alarm Download PDFInfo
- Publication number
- GB2308214A GB2308214A GB9525762A GB9525762A GB2308214A GB 2308214 A GB2308214 A GB 2308214A GB 9525762 A GB9525762 A GB 9525762A GB 9525762 A GB9525762 A GB 9525762A GB 2308214 A GB2308214 A GB 2308214A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- automobile
- ultra
- burglar
- high frequency
- 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- Withdrawn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
- B60R25/1001—Alarm systems associated with another car fitting or mechanism, e.g. door lock or knob, pedals
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Burglar Alarm Systems (AREA)
Description
TI-TLE: A BURGLAR-PROOF DEVICE FOR AN AUTOMOBILE
It has been found that the conventional burglar-proof device for an automobile at the present time usually can emit alarming sound when the micro-switch or mercury switch mounted on the door of the automobile is triggered by a thief. However, even if the automobile is inadvertently oscillated by a person other than a thief, the micro-switch or the mercury switch will also be triggered and the burglar-proof device will also send out alarming sound hence causing much trouble and inconvenience in use.
Therefore, it is an object of the present invention to provide an improved burglar-proof device for an automobile which can obviate and mitigate the above-mentioned drawbacks.
This invention relates to an improved burglar-proof device for an automobile.
It is the primary object of the present invention to provide a burglar-proof device for an automobile which will not be actuated in error.
It is another object of the present invention to provide a burglar-proof device for an automobile which can effectively prevent a vehicle -from being stolen.
It is still another object of the present invention to provide a burglar-proof device for an automobile which is simple in construction.
It is still another object of the present invention to provide a burglar-proof device for an automobile which may be placed at the market at a relatively low cost.
It is a further object of the present invention to provide a burglar-proof device for an automobile which is easy to manufacture.
Other objects of the invention will in part be obvious and in part hereinafter pointed out.
The invention accordingly consists of features of constructions and method, combination of elements, arrangement of parts and steps of the method which will be exemplified in the constructions and method hereinafter disclosed, the scope of the application of which will be indicated in the claims following.
FIG. 1 is a circuit diagram of the sensing system according to the present invent ion;
FIG. 2 is a circuit diagram of the alarm receiving system according to the present invention;
FIG. 3 is a flow chart showing the emission of the high frequency signal according to the present invention;
FIG. 4 is a flow chart showing the receiving of the high frequency signal according to the present invention; and
FIG. 5 is a flow chart showing the working principle of the present invention.
For the purpose to promoting an understanding of the principles of the invention, reference will now be made to the embodiment illustrated in the drawings. Specific language will be used to describe same. It will, nevertheless, be understood that no limitation of the scope of the invention is thereby intended, such alternations and further modifications in the illustrated device, and such further applications of the principles of the invention as illustrated herein being contemplated as would normally occur to one skilled in the art to which the invention relates.
With reference to the drawings and in particular to
FIGS. 1 and 3 thereof, the burglar-proof device for an automobile according to the present invention utilizes an oscillation sensor to pick up the signal produced by external force applied to an automobile. Then, the signal is discriminated by various circuits so as to determine whether to produce an alarm signal or not. A pre-circuit 1 including an oscillation sensor PZ, transistors Q1-Q3, resistors R1-R5, and a capacitor C1 is provided for amplifying the signal. The signal amplified by the pre-circuit 1 will be transmitted to a waveform regulating circuit 2 including a transistor Q4, resistors
R6-R7 and an electrolytic capacitor C2.Then, the signal will be transmitted to a comparing circuit 3 composed of an integrated circuit IC1, resistors R8-R11, diodes D1-D2 and capacitors C3-C5. The comparing circuit 3 is designed for controlling the circuit. The comparing circuit 3 will produce a reference potential dif-ference to control an alarm controlling circuit 4 composed of a relay RY1, a resistor R12, transistors Q5-Q6, and capacitors C6-C8.
The reference potential difference produced by the comparing circuit 3 will be amplified by the transistors to control the contact SW1 of the relay RY1. The contact
SW1 of the relay RY1 is connected with an encoder IC2 which is in turn connected with a ultra-high frequency emitting circuit composed of an antenna, resistors
R13-R15, capacitors C9-C12, a transistor Q7, a variable capacitor VC1, and a light emitting diode LED1.
Referring to FIGS. 2 and 4, the ultra-high frequency receiving and alarming device according to the present invention includes an oscillation coil T1, a transistor
Q10, an induction coil L2, capacitors C19-C25 and resistors R27-R29 which form a ultra-high frequency receiver for receiving electric waves of 300MHz. The signal produced by this ultra-high frequency receiver is transmitted to a switching circuit including induction coil L1, capacitors C14-C18, resistors R20-R26 and an integrated circuit IC5 which will then output a reference signal. The reference signal will be discriminated by a decoding circuit including a transistor Q8, resistors
R16-R17 and decoder IC3 to determine whether the relay RY2 has to be actuated.The signal output from the contact
SW2 of the relay RY2 will be transmitted to a time delay setting circuit including a time pulse oscillator IC4, resistors R18-R19 and a capacitor C13, which will produce an intermittent potential to control an alarm intermittent controlling circuit including a transistor Q9 and a relay
RY3. The alarm intermittent controlling circuit will provide a pulse signal to a high power alarm in the automobile or a portable alarm receiver. The power supplying circuit 12 includes a rectifier and utilizes a voltage regulating transistor number 7806 to distribute direct currents +12V and +6V.
FIG. 5 illustrates the working principle of the present invention. As illustrated, the sensing system is mounted on the steering wheel of an automobile so that when a thief holds the steering wheel, the pre-circuit 1 of the sensing system will pick up a signal the waveform of which will be arranged by a waveform regulating circuit 2. The signal will be transmitted to the comparing circuit 3 to discriminate whether the alarm controlling circuit 4 has to be actuated. Then, the code will be discriminated by the code setting circuit 5. If the code is wrong, the time delay setting circuit will be actuated to produce intermittent signal which will produce alarm by a high power amplifier or will be transmitted to a portable receiver by a signal emitter.
The invention is naturally not limited in any sense to the particular features specified in the forgoing or to the details of the particular embodiment which has been chosen in order to illustrate the invention.
Consideration can be given to all kinds of variants of the particular embodiment which has been described by way of example and of its constituent elements without thereby departing from the scope of the invention. This invention accordingly includes all the means constituting technical equivalents of the means described as well as their combinations.
Claims (6)
1. A burglar-proof device for an automobile comprising:
a sensing system mounted on a steering wheel of an automobile, said sensing system system being an oscillation sensing system;
a ultra-high frequency signal emission system electrically connected to said sensing system and designed for emitting signals produced by said sensing system;
a ultra-high frequency signal receiving system for receiving said signals and producing alarming sound.
2. The burglar-proof device for an automobile as claimed in Claim 1, wherein said oscillation sensing system includes an oscillation sensor and an amplifying circuit.
3. The burglar-proof device for an automobile as claimed in Claim 1, wherein said ultra frequency signal emission system includes a waveform regulator, a comparing circuit, an alarm controlling circuit, a code setting circuit and a ultra-high frequency signal emitting circuit.
4. The burglar-proof device for an automobile as claimed in Claim 1, wherein said ultra-high frequency signal receiving system includes a ultra-high frequency receiving circuit, a switching circuit, a decoding circuit, a time delay setting circuit and an alarm.
5. The burglar-proof device for an automobile as claimed in Claim 1, further comprising a power supplying circuit which utilizes a voltage-regulating transistor to distribute required direct currents for said device.
6. The burglar-proof device for an automobile as claimed in Claim 1, wherein said alarm signals are amplified by an audio power amplifier or emitted by a ultra-high frequency emitting circuit to a portable ultra-high frequency receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9525762A GB2308214A (en) | 1995-12-16 | 1995-12-16 | Vehicle alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9525762A GB2308214A (en) | 1995-12-16 | 1995-12-16 | Vehicle alarm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9525762D0 GB9525762D0 (en) | 1996-02-14 |
| GB2308214A true GB2308214A (en) | 1997-06-18 |
Family
ID=10785548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9525762A Withdrawn GB2308214A (en) | 1995-12-16 | 1995-12-16 | Vehicle alarm |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2308214A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2328053A (en) * | 1997-07-28 | 1999-02-10 | Simon Geoffrey Davies | Vehicle security system |
| ES2138558A1 (en) * | 1998-03-10 | 2000-01-01 | Com Sys Computadoras Y Sistema | System for drawing attention to the fact that a parked vehicle is being handled by a crane or the like |
| GB2341472A (en) * | 1998-09-14 | 2000-03-15 | Alan James Phillips | Vehicle security system with a remote alert system of alarm activation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2070833A (en) * | 1980-02-29 | 1981-09-09 | Key Executive Safeguard Ltd | Vehicle security system |
| GB2158979A (en) * | 1984-03-21 | 1985-11-20 | Andrew John George | Alarm equipment |
| WO1989002380A1 (en) * | 1987-09-15 | 1989-03-23 | George Carr Milburn | Self contained locking vehicle alarm |
| GB2264911A (en) * | 1990-05-18 | 1993-09-15 | Innovision Tech Group | Portable anti-theft alarm |
| US5406256A (en) * | 1992-09-29 | 1995-04-11 | Jeffrey W. Ledel | Remote sensor and motion alarm system |
-
1995
- 1995-12-16 GB GB9525762A patent/GB2308214A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2070833A (en) * | 1980-02-29 | 1981-09-09 | Key Executive Safeguard Ltd | Vehicle security system |
| GB2158979A (en) * | 1984-03-21 | 1985-11-20 | Andrew John George | Alarm equipment |
| WO1989002380A1 (en) * | 1987-09-15 | 1989-03-23 | George Carr Milburn | Self contained locking vehicle alarm |
| GB2264911A (en) * | 1990-05-18 | 1993-09-15 | Innovision Tech Group | Portable anti-theft alarm |
| US5406256A (en) * | 1992-09-29 | 1995-04-11 | Jeffrey W. Ledel | Remote sensor and motion alarm system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2328053A (en) * | 1997-07-28 | 1999-02-10 | Simon Geoffrey Davies | Vehicle security system |
| ES2138558A1 (en) * | 1998-03-10 | 2000-01-01 | Com Sys Computadoras Y Sistema | System for drawing attention to the fact that a parked vehicle is being handled by a crane or the like |
| GB2341472A (en) * | 1998-09-14 | 2000-03-15 | Alan James Phillips | Vehicle security system with a remote alert system of alarm activation |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9525762D0 (en) | 1996-02-14 |
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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) |