CN102452375A - Anti-interference vehicle anti-theft device - Google Patents
Anti-interference vehicle anti-theft device Download PDFInfo
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- CN102452375A CN102452375A CN2010105236493A CN201010523649A CN102452375A CN 102452375 A CN102452375 A CN 102452375A CN 2010105236493 A CN2010105236493 A CN 2010105236493A CN 201010523649 A CN201010523649 A CN 201010523649A CN 102452375 A CN102452375 A CN 102452375A
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- circuit
- theft device
- interference
- relay
- theft
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Abstract
The invention discloses an anti-interference vehicle anti-theft device, belonging to the technical field of anti-theft equipment. The anti-theft device comprises a remote control transmitter and an anti-theft host, wherein the remote control transmitter comprises a coder and a transmitting circuit; the anti-theft host comprises a receiver, an anti-interference starting circuit, a relay and a flameout circuit; a switch assembly of the anti-interference starting circuit is connected with the relay in series; and the relay controls the flameout circuit. The anti-interference vehicle anti-theft device has the beneficial effect of preventing the false operation caused by the interference of external signals, thereby reducing the unnecessary trouble of an owner, and increasing the practicability of the vehicle anti-theft device.
Description
Technical field
The present invention relates to a kind of Car Burglar Alarm, relate in particular to a kind of disturbance rejection anti-theft device for vehicle, belong to the burglary-resisting installation technical field.
Background technology
The employed anti-theft device for vehicle of people is influenced by extraneous interference easily now; Like the disturbance of electronic signal of car body itself, electrostatic influence, ignition tension etc.; The capital causes this anti-joyride device to receive interfering signal suddenly and improper action takes place, and for example locomotive stops working suddenly or alert song your writing in motion, causes car owner's puzzlement and inconvenience; For these reasons, be necessary anti-theft device for vehicle is improved.
Summary of the invention
To the problem that above-mentioned prior art exists, the present invention provides a kind of disturbance rejection anti-theft device for vehicle, can resist external interference.
To achieve these goals, the technical scheme that the present invention adopts is: a kind of disturbance rejection anti-theft device for vehicle, comprise remote control transmitter and anti theft host, and remote control transmitter comprises coder and transmission circuit; Anti theft host comprises receptor, interference guard start-up circuit, relay and flameout circuit, and the control group of interference guard start-up circuit is connected with relay, relay control flameout circuit open circuit and short circuited switching; The state of flameout circuit was not short circuit when the vehicle electric switch was opened, and engine can't start; After electric switch unlatching and receptor are received the correct signal of remote control transmitter, see voltage off and make the control group conducting and make the actuating of relay, switch flameout circuit and engine can be started for open circuit.
Wherein, anti theft host also comprises mu balanced circuit, to export constant voltage power suspply to this receptor.The control group of interference guard start-up circuit is a SCR Sillicon Control Rectifier.Receptor also comprises acceptor circuit and decoder.Remote control transmitter comprises projector, and this projector is provided with transmission circuit and coder.
The invention has the beneficial effects as follows: reduce the situation that Car Burglar Alarm is disturbed, reduce, reduce the unnecessary puzzlement of car owner, increase the practicality of anti-theft device for vehicle owing to extraneous signal disturbs the misoperation that produces.
Description of drawings
Fig. 1 is the block schematic diagram that anti theft host of the present invention and car body start electric switch
Fig. 2 is the block schematic diagram of remote control transmitter of the present invention
Fig. 3 is the scheme drawing that relay of the present invention is opened flameout circuit
Fig. 4 is the scheme drawing of cut-off flameout circuit of the present invention
Among the figure: 1, anti theft host, 11, mu balanced circuit, 12, receptor, 121, acceptor circuit; 122, decoder, 13, the interference guard start-up circuit, 131, control group, 14, relay; 15, flameout circuit, 2, remote control transmitter, 21, key control circuit, 22, projector; 221, coder, 222, transmission circuit, 3, car body starts electric switch.
The specific embodiment
To combine accompanying drawing that the present invention is described further below.
Extremely shown in Figure 4 like Fig. 1; The present invention includes anti theft host 1 and remote control transmitter 2; Anti theft host 1 is located in the car body, and car body is the car body of the vehicle such as general automobile or locomotive, and remote control transmitter 2 is carried by the car owner; Car body starts electric switch 3 and connects anti theft host 1, and anti theft host 1 is provided with mu balanced circuit 11, receptor 12, interference guard start-up circuit 13, relay 14 and flameout circuit 15.
Mu balanced circuit 11 connects receptor 12 respectively and starts electric switch 3 with car body, and the car owner is when opening car body startup electric switch 3, and the out-put supply of car body carries out voltage stabilizing via mu balanced circuit 11, for receptor 12 provides moderately stable voltage source.Receptor 12 is provided with acceptor circuit 121 and decoder 122, and acceptor circuit 121 belongs to radio frequency (RF) acceptor circuit.Interference guard start-up circuit 13 belongs to SCR Sillicon Control Rectifier (SCR), comprises control group 131, and connects with relay 14, in case when control group 131 received the signal by receptor 12 output, control group 131 conductings also formed ground connection.Car body starts the terminal A that electric switch 3 connects interference guard start-up circuit 13, and car body starts when electric switch 3 is opened supplies voltage to terminal A, and relay 14 connects interference guard start-up circuit 13 and flameout circuit 15 respectively.14 pairs of flameout circuits 15 of interference guard start-up circuit 13 may command relays switch short circuit (can not start vehicle) or open circuit (can start vehicle).
When car body startup electric switch 3 cut out, the receptor 12 of anti theft host 1 formed outage with interference guard start-up circuit 13, and flameout circuit 15 forms short circuits via relay 14 can't start the engine of car body.When car body started electric switch 3 and opens, car body provided voltage source to interference guard start-up circuit 13 by terminal A, by mu balanced circuit 11 supply-voltage sources to receptor 12.If remote control transmitter 2 is not launched correct signal to receptor 12, the control group 131 of interference guard start-up circuit 13 is still closed, and interference guard start-up circuit 13 can't form ground connection, and electrical equipment 14 is kept the state of not inhaling magnetic, and flameout circuit 15 still keeps short circuit.
If the car owner after car body starts electric switch 3 unlatchings, utilizes remote control transmitter 2 emission correct signal to receptors 12, the terminal B of receptor 12 exportable signal to interference guard start-up circuits 13, actuating switch assembly 131 ground connection again.At this moment, magnetic inhaled by the relay 14 of anti theft host 1 and this flameout circuit 15 of change-over switch is open circuit, allows to start the engine start of this car body.In case receptor 12 is seen the control group 131 of voltage triggered interference guard start-up circuit 13 off, control group 131 sustainable maintenance conductings start electric switch 3 up to closing car body, just can make control group 131 form not conducting.Therefore interference guard start-up circuit 13 can be avoided receiving noise jamming and switch flameout circuit 15.When interference guard start-up circuit 13 did not form ground connection, relay 14 made flameout circuit 15 form short circuits, and flameout circuit 15 prevents that the engine start of car body from stealing car body to prevent the burglar.
To sum up, the power supply of anti theft host 1 is supplied with from car body and is started electric switch 3, and when car body startup electric switch 3 was not opened, relay 14 did not have action, and contact a and b connect, and flameout circuit 15 is by short circuit, and engine can't start; Before the car owner was not by remote control transmitter 2, relay 14 equally can not move after car body startup electric switch 3 is unlocked.Same flameout circuit 15 also can't be started the engine by short circuit.Only after car body starts electric switch 3 and is unlocked, remote control transmitter 2 is pressed and removes button and transmit, and control group 131 (SCR) triggering and conducting and then make relay 14 actions makes contact a, b tripping, and flameout circuit 15 is the open circuit shape, and engine is able to start.And the characteristic of SCR is after triggering and conducting, only if close electric switch, otherwise any signal all can't make SCR transfer not conducting to by conducting, so any interfering signal all can't influence its state.The present invention is provided with interference guard start-up circuit 13 at the anti theft host 1 of car body, prevents that extraneous interference from exerting an influence to Car Burglar Alarm, reduces the action that makes a mistake, and improves practicality.
Claims (5)
1. a disturbance rejection anti-theft device for vehicle is characterized in that comprising remote control transmitter (2) and anti theft host (1), and remote control transmitter (2) comprises coder (221) and transmission circuit (222); Anti theft host (1) comprises receptor (12), interference guard start-up circuit (13), relay (14) and flameout circuit (15), and the control group of interference guard start-up circuit (13) is connected with relay (14), relay (14) control flameout circuit (15).
2. disturbance rejection anti-theft device for vehicle according to claim 1 is characterized in that described anti theft host (1) also comprises mu balanced circuit (11).
3. disturbance rejection anti-theft device for vehicle according to claim 1, the control group that it is characterized in that described interference guard start-up circuit (13) is a SCR Sillicon Control Rectifier.
4. disturbance rejection anti-theft device for vehicle according to claim 1 is characterized in that described receptor (12) also comprises acceptor circuit and decoder.
5. disturbance rejection anti-theft device for vehicle according to claim 1 is characterized in that described remote control transmitter (2) comprises projector (22), and this projector (22) is provided with transmission circuit and coder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105236493A CN102452375A (en) | 2010-10-27 | 2010-10-27 | Anti-interference vehicle anti-theft device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105236493A CN102452375A (en) | 2010-10-27 | 2010-10-27 | Anti-interference vehicle anti-theft device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102452375A true CN102452375A (en) | 2012-05-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105236493A Pending CN102452375A (en) | 2010-10-27 | 2010-10-27 | Anti-interference vehicle anti-theft device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102452375A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104943656A (en) * | 2015-06-03 | 2015-09-30 | 沈阳理工大学 | Anti-interference anti-theft system based on mutual correlation and anti-theft method thereof |
-
2010
- 2010-10-27 CN CN2010105236493A patent/CN102452375A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104943656A (en) * | 2015-06-03 | 2015-09-30 | 沈阳理工大学 | Anti-interference anti-theft system based on mutual correlation and anti-theft method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120516 |