CN107290759A - A kind of anti-automobile bit mask device system - Google Patents
A kind of anti-automobile bit mask device system Download PDFInfo
- Publication number
- CN107290759A CN107290759A CN201710436034.9A CN201710436034A CN107290759A CN 107290759 A CN107290759 A CN 107290759A CN 201710436034 A CN201710436034 A CN 201710436034A CN 107290759 A CN107290759 A CN 107290759A
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- Prior art keywords
- pin
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- automobile
- power
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/21—Interference related issues ; Issues related to cross-correlation, spoofing or other methods of denial of service
- G01S19/215—Interference related issues ; Issues related to cross-correlation, spoofing or other methods of denial of service issues related to spoofing
Abstract
The present invention relates to a kind of anti-automobile bit mask device system, for detecting car body whether there is alignment system shielding device.The system is main to be made up of antenna receiving circuit, power-measuring circuit, A/D change-over circuits, alarm circuit, control circuit and STC12LE5A60S2 microprocessors.The signal of 1550MHz 1590MHz frequency ranges is received by antenna receiving circuit, signal feeding power-measuring circuit is obtained into analog voltage, the size that STC12LE5A60S2 microprocessors obtain digital voltage by analyzing A/D change-over circuits judges that bus location shielding device whether there is, if being in anti-theft state in the presence of car is just made, alert, cuts off automobile oil electricity, after automobile cut-out oil electricity, only remote control can make car recover normally travel, so as to realize the antitheft of automobile.The system can also control whether automobile is in anti-theft modes by remote control, and simple to operation, practicality is high, with good development prospect.
Description
Technical field
The present invention relates to GPS interference detection techniques field, a kind of anti-automobile bit mask device system is related generally to.
Background technology
With developing rapidly for location technology, alignment system of today has had round-the-clock, global, real-time, continuous
Accurate three-dimensional stationkeeping ability, it is widely used to the dual-use communications field.But it is due to Oriented Systems Transport power
Small, signal frequency is disclosed, and is made alignment system anti-electromagnetic interference capability universal very fragile, is highly prone to interference.Therefore position dry
Disturb equipment cost cheap, be conveniently easy to get, be thus easy to make the safety of alignment system to be on the hazard.In view of the weight of alignment system
The property wanted, the substantial amounts of manpower and materials of many country's inputs are studied the Anti-Jamming Technique of alignment system, and the more commonly used is certainly
Temporal filtering technique, Time-Frequency Domain Filtering technology, airspace filter technology, amplitude domain treatment technology are adapted to, but because numeric structure will
Realized by hardware, new receiver must be all bought to change parameter, so there is certain use limitation.Also occur now
Anti-interference reception technology based on software, but technology is not also very perfect, it is higher to promote cost, so automobile is universal now
The alignment system used is still highly prone to interference.The Interference Detection to alignment system generally uses the side of analysis spectrum at present
Method is also not easy to promote, it is necessary to special frequency spectrograph, cost is higher and not portable.The criminal for stealing car is fixed using automobile
These characteristics of position system, install alignment system screening arrangement on theft object vehicle, carry out shielding automotive alignment system, so that
To strive for that time enough handles stolen vehicle.
In order to automobile safety, it is necessary to a set of with low cost, portable system is used for detecting that alignment system shields device
It whether there is, the timely alert of system energy, cuts off automobile oil-way in the presence of shielding device, automobile is in antitheft mould
Formula.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the invention provides a kind of anti-automobile bit mask device system.At present
The alignment system that automobile is used includes GPS positioning system and BEI-DOU position system, and the centre frequency of their frequency ranges used is respectively
1575MHz and 1561MHz, therefore criminal sends the high-power interference that frequency range is 1550MHz-1590MHz using interference unit
Signal, the power of signal used in its power considerably beyond car position system, the purpose of shielding automotive alignment system is reached with this.
Based on this, the system measures to judge bus location system by the watt level to 1550MHz-1590MHz frequency band signals
System shielding device whether there is, and this method clear principle is understood, implementation process is simple, promotes relatively low of cost.The system can be accurate
True judgement car position system shielding device whether there is, and system can timely alert, cut-out in the presence of shielding device
Automobile oil-way, makes automobile be in anti-theft modes.
On the one hand, the invention provides a kind of anti-automobile bit mask device system, including：
The system is by antenna receiving circuit, power-measuring circuit, A/D change-over circuits, alarm circuit, Control
Circuit, reset circuit, power circuit, radio control circuit and microcontroller circuit composition, wherein, the antenna receiving circuit with
The power-measuring circuit connection, the power-measuring circuit is connected with the A/D change-over circuits, the A/D change-over circuits, institute
State alarm circuit, the control relay circuit, the reset circuit, the power circuit and the radio control circuit
It is connected respectively with the microcontroller circuit.
Aspect as described above and any possible implementation, it is further provided a kind of implementation,
Microprocessor in the radio control circuit selects STC12LE5A60S2.
Aspect as described above and any possible implementation, it is further provided a kind of implementation,
The antenna receiving circuit is used for the signal for receiving 1560MHz-1590MHz frequency ranges.
Aspect as described above and any possible implementation, it is further provided a kind of implementation, described power
Power measurement chip (U2) in measuring circuit selects AD8362, and power-measuring circuit is by AD8362, magnetic bead, resistance R8, electric capacity
C9, C10, C11, C12, C13, C14, C15, C20 are constituted, wherein, the signal that the antenna receiving circuit is received from resistance R8 and
Electric capacity C13 one end access, signal is sent into U2 high-frequency signal inputs U2 pin 4 by C13, the size of power is made by U2
Corresponding analog voltage is converted to, U2 pin 12, U2 pin 1, pin 8, pin 10, pin are exported from corresponding output end
16 are directly grounded, pin 2, pin 3, pin 5, pin 6, pin 9 by the electric capacity C11 of identical capacitance values, C12, C14, C15,
C20 is grounded, and pin 14 is directly connected with U2 reference voltage output end U2 pin 15 obtains low-voltage, and outside 5V power supplys pass through
Pin 13 is powered to U2, and electric capacity C9, the C10 being connected with pin 13 play a part of filtering, and outside 3.3V power supplys are given by magnetic bead
The antenna receiving circuit is powered.
The technical scheme of use is：First, the signal of 1550MHz-1590MHz frequency ranges is received with antenna receiving circuit, will
Signal feeding power-measuring circuit obtains analog voltage.By A/D change-over circuits analog voltage is changed after send into
STC12LE5A60S2 microprocessors, STC12LE5A60S2 microprocessors are the digital voltage after conversion and the threshold voltage of setting
Compare in real time, if more than bus location shielding device presence is judged if threshold voltage, make automobile alert, cut-out automobile oil
Electricity, after automobile cut-out oil electricity, only remote control can make car recover normally travel, and remote control and anti-automobile bit mask device
System is matched one by one, so as to realize the antitheft of automobile.Whether the system can also control automobile in antitheft by remote control
Pattern.
Figure of description
Fig. 1 is system entire block diagram of the invention；
Fig. 2 is power-measuring circuit；
Fig. 3 is alarm circuit；
Fig. 4 is control relay circuit；
Fig. 5 is radio control circuit；
Fig. 6 is microcontroller circuit.
Embodiment
The present invention is a kind of to measure to judge automobile by the watt level to 1550MHz-1590MHz frequency band signals
The anti-automobile bit mask device system that bus location shielding device whether there is.It is portable with low-power consumption, low cost, easy to operate
The characteristics of.
Workflow is (such as Fig. 1)：The system receives the signal of 1550MHz-1590MHz frequency ranges with antenna receiving circuit,
By signal feeding power-measuring circuit obtain analog voltage, by A/D change-over circuits the analog voltage of output is changed after give
Enter STC12LE5A60S2 microprocessors, STC12LE5A60S2 microprocessors are the digital voltage after conversion and the threshold value electricity of setting
Compare during compacting, if more than the presence of bit mask device is judged if threshold voltage, make automobile alert, cut-out automobile is oily
Electricity, after automobile cut-out oil electricity, only remote control can make car recover normally travel, and remote control and anti-automobile bit mask device
System is matched one by one, so as to realize the antitheft of automobile.Whether the system can also control automobile in antitheft by remote control
Pattern, simple to operation, practicality is high, with good development prospect.
Antenna receiving circuit, car position system is positioned by receiving satellite-signal, gps satellite signal be divided into L1 and
L2, centre frequency is respectively 1575MHz and 1228MHZ, and wherein L1 is open civil signal, and signal is Circular Polarisation, intensity
For -166DBM or so, belong to weaker signal.Big Dipper satellite signal is also in this way, therefore in the market is specifically used to enhancing
The dual-mode antenna of car position system signal, the antenna is simultaneously suitable for GPS positioning system and BEI-DOU position system.The antenna connects
The frequency range collected mail number is 1550MHz-1590MHz, is also to shield the signal frequency range that sends of device, and its gain is up to 28dB in addition, because
This system directly does antenna receiving circuit from such antenna, and not only signal filtering and amplification effect are good, also save exploitation
Cost.
Power-measuring circuit (such as Fig. 2), by power measurement chip U2, magnetic bead, resistance R8, electric capacity C9, C10, C11, C12,
C13, C14, C15, C20 are constituted.Signal is received by gps antenna, is accessed from R8, C13 one end, wherein C13 plays isolated DC
Signal is disturbed, the effect of couples high frequency signals.Signal sends into U2 high-frequency signal input (U2 pin 4) by C13, passes through
U2 makes the size of power be converted to corresponding analog voltage, and (U2 pin 12) is exported from corresponding output end.U2 pin 1,
Pin 8, pin 10, pin 16 are directly grounded, the electric capacity that pin 2, pin 3, pin 5, pin 6, pin 9 pass through identical capacitance values
C11, C12, C14, C15, C20 are grounded, and pin 14 is directly connected with U2 reference voltage output end (U2 pin 15) obtains low
Voltage, outside 5V power supplys are powered by pin 13 to U2, and electric capacity C9, the C10 being connected with pin 13 play a part of filtering.It is outside
3.3V power supplys are powered by magnetic bead to antenna, and wherein magnetic bead can avoid high-frequency signal from entering circuit to follow-up from power access end
Circuit is interfered.
Alarm circuit (such as Fig. 3), is made up of buzzer LS1, triode Q2, resistance R15, R16, and wherein R15, R16 rise
To the effect of current limliting.In the presence of U1 judges GPS interference units, U1 34 pins export alternate low and high level, this alarm electricity
Road is turned on, buzzer rings.
Control relay circuit (such as Fig. 4), by relay jdq1, triode Q1, resistance R2, R6, diode D1, D2 group
Into.Resistance R2, R6 play a part of current limliting, and D1 is alarm lamp, and D2 is fly-wheel diode, relay jdq1 pin 2, pin 5
In the middle of the power line that binding post access automobile is drawn out to for normally closed switch.In the presence of U1 judges GPS interference units, the 11 of U1 draws
Pin is changed into low level, now controls circuit turn-on, and alarm lamp D1 is bright, and relay normally closed switch disconnects, i.e., the power line of automobile breaks
Open.
Radio control circuit (such as Fig. 5), by STC12LE5A60S2 microprocessor U6, crystal oscillator Y2, resistance R10, R11, R12,
R13, R14, electric capacity C25, C26, C27, C28, diode D5, button SW3, SW4 and wireless module U3, U7 composition.U6 reset
Hold (pin 4) directly by resistance eutral grounding, outside 3.3V power supplys are powered by U6 pin 38 to single-chip microcomputer, electric capacity C25, C26
Play a part of filtering, outside 11.0592M crystal oscillators are connected with U6 pin 14 and pin 15.U3 pin 1 is grounded, U3's
Pin 2 connects outside 3.3V power supplys, and U3 pin 3 is connected with U1 pin 28, and U3 pin 4 is connected with U1 pin 17, U3's
Pin 5 is connected with U1 pin 3, and U3 pin 6 is connected with U1 pin 1, and U3 pin 7 is connected with U1 pin 2, and U3's draws
Pin 8 is connected with U1 pin 8, and U1 receives signal by U3.U7 pin 1 is grounded, and U7 pin 2 connects outside 3.3V power supplys, U7
Pin 3 be connected with U6 pin 28, U7 pin 4 is connected with U6 pin 17, and U7 pin 5 is connected with U6 pin 3, U7
Pin 6 be connected with U6 pin 1, U7 pin 7 is connected with U6 pin 2, and U7 pin 8 is connected with U6 pin 8, U6 control
U7 processed sends signal.D5 is light emitting diode, is the indicator lamp that button is pressed, and resistance R14 plays a part of current limliting.Button SW3
Pin 2,4 be grounded, pin 1 is connected with D5 negative pole, and pin 3 connects U6 36 pins, and when button SW3 is pressed, D5 is luminous, and U6 is examined
When measuring its 36 pin for low level, automobile GPS Interference Detections system is set to stop the detection to GPS interference units, and recover car
Normal mode；Button SW4 pin 2,4 is grounded, and pin 1 is connected with D5 negative pole, and pin 3 connects U6 34 pins, as button SW4
Press, D5 lights, when U6 detects its 34 pin for low level, automobile GPS Interference Detection system worked wells.
Microcontroller circuit (such as Fig. 6), by STC12LE5A60S2 microprocessor U1, crystal oscillator Y1, resistance R1, R3, R4, R5,
Electric capacity C1, C2, C3, C4 are constituted.U1 reset terminal (pin 4) directly passes through resistance eutral grounding, outside 3.3V power supplys drawing by U1
Pin 38 is powered to single-chip microcomputer, and electric capacity C1, C2 play a part of filtering, outside 11.0592M crystal oscillators and U1 pin 14 and pin
15 are connected, and U1 pin 41 is connected as A/D collections port with U2 11 pin, and analog voltage is converted to digital voltage, U1's
Pin 1,2,3,8,17,28 is connected with U3, for receiving the signal of wireless module.
Described U1 and U6 uses STC12LE5A60S2, U2 to use AD8362, U3 and U7 to use NRF24L01.
Beneficial effects of the present invention：The system can accurately judge depositing for car position system shielding device is whether there is in automobile body
In the presence of judgement has shielding device, automobile is sent alarm, cutting off automobile oil-way, realize the antitheft of automobile.When automobile cut-out
After oily electricity, only remote control can make car recover normally travel, and remote control is matched one by one with anti-automobile bit mask device system,
So as to realize the antitheft of automobile.The system can also control whether automobile is in anti-theft modes by remote control.The system can
Applied to private car, to reach the purpose for preventing liking that car is stolen；Rent-a-car company is can be applied to, the purpose for deceiving rent is prevented to reach；
Bus is can be applied to, to reach the purpose for preventing bus to be abused.Whole system is using STC12LE5A60S2 microprocessors as core
The heart, cost is relatively low, realizes simple, easily operation, detects accurate, practical, applied widely, before good application
Scape.
Claims (4)
1. a kind of anti-automobile bit mask device system, it is characterised in that the system is by antenna receiving circuit, power measurement electricity
Road, A/D change-over circuits, alarm circuit, control relay circuit, reset circuit, power circuit, radio control circuit and Wei Chu
Device circuit composition is managed, wherein, the antenna receiving circuit is connected with the power-measuring circuit, the power-measuring circuit and institute
State the connection of A/D change-over circuits, it is the A/D change-over circuits, the warning circuit, the control circuit, the reset circuit, described
Power circuit and the radio control circuit are connected with the microcontroller circuit respectively.
2. a kind of anti-automobile bit mask device system according to claim 1, it is characterised in that the microcontroller circuit
In microprocessor (U1) select STC12LE5A60S2.
3. a kind of anti-automobile bit mask device system according to claim 1, it is characterised in that the antenna receiving circuit
Signal for receiving 1550MHz-1590MHz frequency ranges.
4. a kind of anti-automobile bit mask device system according to claim 1, it is characterised in that described power measurement electricity
Power measurement chip (U2) in road selects AD8362, and power-measuring circuit is by AD8362, magnetic bead, resistance R8, electric capacity C9, C10,
C11, C12, C13, C14, C15, C20 are constituted, wherein, the signal that the antenna receiving circuit is received is from resistance R8 and electric capacity C13
One end access, signal sends into U2 high-frequency signal inputs U2 pin 4 by C13, and the size for making power by U2 is converted to
Corresponding analog voltage, U2 pin 12 is exported from corresponding output end, and U2 pin 1, pin 8, pin 10, pin 16 is direct
Ground connection, pin 2, pin 3, pin 5, pin 6, pin 9 are connect by electric capacity C11, C12, C14, C15, C20 of identical capacitance values
Ground, pin 14 is directly connected with U2 reference voltage output end U2 pin 15 obtains low-voltage, and outside 5V power supplys pass through pin
13 power to U2, and electric capacity C9, the C10 being connected with pin 13 play a part of filtering, and outside 3.3V power supplys are by magnetic bead to described
Antenna receiving circuit is powered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710436034.9A CN107290759A (en) | 2017-06-08 | 2017-06-08 | A kind of anti-automobile bit mask device system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710436034.9A CN107290759A (en) | 2017-06-08 | 2017-06-08 | A kind of anti-automobile bit mask device system |
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| Publication Number | Publication Date |
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| CN107290759A true CN107290759A (en) | 2017-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710436034.9A Pending CN107290759A (en) | 2017-06-08 | 2017-06-08 | A kind of anti-automobile bit mask device system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108075849A (en) * | 2017-12-28 | 2018-05-25 | 成都市智讯联创科技有限责任公司 | GPS and GSM interference signal direction detecting positioning systems based on detection |
| CN109613575A (en) * | 2018-12-12 | 2019-04-12 | 成都路行通信息技术有限公司 | A kind of shielded method for early warning of intelligent positioner signal |
-
2017
- 2017-06-08 CN CN201710436034.9A patent/CN107290759A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108075849A (en) * | 2017-12-28 | 2018-05-25 | 成都市智讯联创科技有限责任公司 | GPS and GSM interference signal direction detecting positioning systems based on detection |
| CN108075849B (en) * | 2017-12-28 | 2024-01-09 | 成都市智讯联创科技有限责任公司 | GPS and GSM interference signal direction-finding positioning system based on detection |
| CN109613575A (en) * | 2018-12-12 | 2019-04-12 | 成都路行通信息技术有限公司 | A kind of shielded method for early warning of intelligent positioner signal |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Yang Mingzhu Document name: Deemed as a notice of withdrawal |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171024 |