CN107187419A - A kind of automobile door lock status identification means and recognition methods - Google Patents
A kind of automobile door lock status identification means and recognition methods Download PDFInfo
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- CN107187419A CN107187419A CN201710351101.7A CN201710351101A CN107187419A CN 107187419 A CN107187419 A CN 107187419A CN 201710351101 A CN201710351101 A CN 201710351101A CN 107187419 A CN107187419 A CN 107187419A
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- 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
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- 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
Abstract
The present invention provides a kind of automobile door lock status identification means and recognition methods, and described device includes single chip machine controlling circuit, voltage waveform detection circuit, electric power management circuit, GPRS telecommunication circuits and voice playing circuit.Described single chip machine controlling circuit connection voltage waveform detection circuit, GPRS telecommunication circuits and voice playing circuit, voltage waveform detects that circuit input end connects automobile power source two ends by automobile OBD interfaces, that detects vehicle power supply voltage falls waveform, single chip machine controlling circuit detects that circuit receives the supply voltage detected and falls waveform by voltage waveform, comparison of wave shape is fallen by supply voltage and judges that automobile door lock is opening or closed mode, and the status information of door lock is sent to cloud platform server by GPRS telecommunication circuits, voice broadcast is carried out by voice playing circuit.Simple and convenient, without being modified to automobile, only need to be connected described device with OBD interfaces can realize the identification to automobile door lock state.
Description
Technical field
The present invention relates to automobile safety anti-theft field, more particularly to a kind of automobile door lock status identification means and identification side
Method.
Background technology
At present, it is necessary to make automobile enter state of deploying troops on garrison duty after automobile car locking, in automobile door lock in the anti-theft technique of automobile
Need to enter disarming state after opening, it is necessary to be detected to the door lock state of automobile in this technology, judge automobile door lock
It is opening or closed mode, conventional way is the former automobile circuit of modification, with the mode of direct line by detection means
It is connected with automobile lock switch, to judge the lock state of automobile.But this method needs to change automobile again
, there is potential safety hazard and install also pretty troublesome in wiring.
, can be direct by OBD sockets containing the power supply terminal directly come from automobile batteries in the OBD interfaces that automobile is often matched somebody with somebody
The voltage waveform at automobile batteries end is detected, the switch shape of automobile door lock is judged using the method for detection automobile power source waveform
State, simple and convenient, without being modified to automobile, only need to be connected detection means with OBD interfaces can realize to car door
The identification of lock status.
The content of the invention
In order to overcome the deficiencies in the prior art, the present invention provides a kind of automobile door lock status identification means and recognition methods,
The on off state of automobile door lock is judged using the method for detection automobile power source waveform, it is simple and convenient, without changing to automobile
Dynamic, only need to be connected described device with OBD interfaces can realize the identification to automobile door lock state.
In order to achieve the above object, the present invention is realized using following technical scheme：
A kind of automobile door lock status identification means, including single chip machine controlling circuit, voltage waveform detection circuit, power management
Circuit, GPRS telecommunication circuits and voice playing circuit.
Described single chip machine controlling circuit connection voltage waveform detection circuit, GPRS telecommunication circuits and voice playing circuit,
Voltage waveform detects that circuit input end connects automobile power source two ends by automobile OBD interfaces, detects falling for vehicle power supply voltage
Waveform, single chip machine controlling circuit detects that circuit receives the supply voltage detected and falls waveform by voltage waveform, passes through power supply
Voltage Drop comparison of wave shape judges that automobile door lock is opening or closed mode, and by GPRS telecommunication circuits door lock
Status information is sent to cloud platform server, and voice broadcast is carried out by voice playing circuit.
Described single chip machine controlling circuit also sends door lock state by SIM card built-in in GPRS telecommunication circuits to car owner
SMS notification.
The preferred model of single-chip microcomputer in described single chip machine controlling circuit：STM32F103T8U6, it is drawn by No. 32
Pin connection voltage waveform detect circuit DY output ends, receive by voltage waveform detect electric circuit inspection to supply voltage fall ripple
Shape signal, GPRS telecommunication circuits are connected by the 14th, 20-22 pins, and voice playing circuit is connected by No. 33 pin.
The described preferred chip model of GPRS telecommunication circuits is SIM808, is GPRS+BT_GPS combined chips, and it passes through the
8th, 9,14-16 pins are connected with single chip machine controlling circuit, are connected by 29-32 pins with SIM card circuit, are passed through the 66th
Number pin is connected with GSM antenna, is connected by No. 35 pin with gps antenna.
The input VCC and GND of described voltage waveform detection circuit connect automobile power source two ends, detection automobile electricity respectively
Source voltage falls waveform, and the signal of detection is amplified by operational amplifier U6A and U6B, entered by electric capacity C23 and C25
Row filtering, carries out current limliting matching by resistance R26, finally by output end DY connection single chip machine controlling circuits, signal is sent
To single-chip microcomputer.
A kind of automobile door lock state identification method, comprises the following steps：
Step 1: first first in use, needing to detect that automobile door lock is opening and closing two kinds of different conditions respectively
When two kinds of power supply different Voltage Drop waveforms, and both Voltage Drop waveforms are preserved.
Step 2: normal in use, when automobile door lock is turned on and off, single chip machine controlling circuit is examined by voltage waveform
Slowdown monitoring circuit carries out the detection of Voltage Drop waveform.
It is compared Step 3: the supply voltage detected is fallen into Wave data of the waveform with having preserved,
Further, when carrying out two kinds of waveform comparisons, using the method for calculating waveform fitting degree coefficient correlation：
1) method with approximate integration is taken to calculate two kinds of three kinds of integrated values for contrasting waveform by computer discrete point：
Wherein X is the wavy curve instantaneous value of the first waveform, and Y is the wavy curve instantaneous value of second of waveform；
2) coefficient correlation is calculated：
PXYNumerical value is between 0-1, PXYNumerical value represents that the similarity of two kinds of waveforms is bigger closer to 1, PXYNumerical value is closer to 0
Represent that the similarity of two kinds of waveforms is smaller.
Step 4: judging the similarity of waveform, the waveform when the waveform detected is opened to the door lock preserved is similar
When spending big, that is, current door lock state is judged for opening, the waveform when the waveform detected and the door lock preserved closing
When similarity is big, that is, judge current door lock state for closed mode.
Step 5: when door lock is judged as opening, carrying out voice broadcast：" having withdrawn a garrison ", when door lock is judged as
During closed mode, voice broadcast is carried out：" having deployed troops on garrison duty ".
Step 6: automobile door lock status information is sent to cloud platform server, finally by cloud platform service by GPRS
Device is sent to user mobile phone APP clients, while the SIM card built in GPRS is also sent out automobile door lock status information by short message form
User mobile phone is delivered to, when user mobile phone can not receive the information of APP push, user can also be notified by short message mode.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, automobile door lock status identification means of the invention judge vapour by using the method for detection automobile power source waveform
The on off state of car door lock, it is simple and convenient, without being modified to automobile, described device need to be only connected with OBD interfaces
To realize the identification to automobile door lock state.
2nd, automobile door lock status identification means of the invention use GPRS communication modes by way of cloud platform is with APP push
Short message mode is sent with the SIM card built in GPRS module automobile door lock status information is sent to car owner's mobile phone, when car owner's mobile phone
Also automobile door lock status information can be received when APP is not turned on, it is ensured that information transmission it is timely.
3rd, what the mains voltage waveform of automobile door lock status identification means of the invention detection was chosen is the electricity on OBD interfaces
Source terminal, this terminal is directly connected with automobile batteries, is not disturbed by other factorses, and the waveform accuracy of detection is high.
Brief description of the drawings
Fig. 1 is the system architecture diagram of the present invention；
Fig. 2 is the circuit structure block diagram of the present invention；
Fig. 3 is the single chip machine controlling circuit schematic diagram of the present invention；
Fig. 4 is the GPRS telecommunication circuit schematic diagrams of the present invention；
Fig. 5 is the SIM card circuit theory diagrams in the GPRS telecommunication circuits of the present invention；
Fig. 6 is the voltage waveform detection circuit theory diagrams of the present invention；
Fig. 7 is the voice playing circuit schematic diagram of the present invention；
Fig. 8 is the electric power management circuit schematic diagram 1 of the present invention；
Fig. 9 is the electric power management circuit schematic diagram 2 of the present invention.
Embodiment
The embodiment provided below in conjunction with accompanying drawing the present invention is described in detail.
As shown in Figure 1, 2, a kind of automobile door lock status identification means, including the detection of single chip machine controlling circuit, voltage waveform
Circuit, electric power management circuit, GPRS telecommunication circuits and voice playing circuit.
Described single chip machine controlling circuit connection voltage waveform detection circuit, GPRS telecommunication circuits and voice playing circuit,
Voltage waveform detects that circuit input end connects automobile power source two ends by automobile OBD interfaces, detects falling for vehicle power supply voltage
Waveform, single chip machine controlling circuit detects that circuit receives the supply voltage detected and falls waveform by voltage waveform, passes through power supply
Voltage Drop comparison of wave shape judges that automobile door lock is opening or closed mode, and by GPRS telecommunication circuits door lock
Status information is sent to cloud platform server, and voice broadcast is carried out by voice playing circuit.
Described single chip machine controlling circuit also sends door lock state by SIM card built-in in GPRS telecommunication circuits to car owner
SMS notification.
As shown in figure 3, the preferred model of single-chip microcomputer in described single chip machine controlling circuit：STM32F103T8U6, it leads to
Cross the DY output ends that No. 32 pin connection voltage waveform detects circuit, receive by voltage waveform detect electric circuit inspection to power supply
Voltage Drop waveform signal, GPRS telecommunication circuits are connected by the 14th, 20-22 pins, and voice is connected by No. 33 pin
Playing circuit.
No. 25 pin of described single-chip microcomputer and No. 28 pin connection external programming mouthful, for microcomputer development personnel
Programming use.Single-chip microcomputer the 2nd, No. 3 pin connection crystal oscillating circuits, provide clock for single-chip microcomputer.
As shown in figure 4, the described preferred chip model of GPRS telecommunication circuits is SIM808, it is GPRS+BT_GPS combination cores
Piece, it is connected by the 8th, 9,14-16 pins with single chip machine controlling circuit, is connected by 29-32 pins and SIM card circuit
Connect, be connected by No. 66 pin with GSM antenna, is connected by No. 35 pin with gps antenna.
Fig. 5 is the SIM card circuit theory diagrams in described GPRS telecommunication circuits, model SIM6 No. 1-6 pipe of SIM card
Pin is connected with the SIM808 chips of GPRS telecommunication circuits, and single-chip microcomputer is read by SIM808GPRS communication chips from SIM card
With preservation information.
As shown in fig. 6, the input VCC and GND of described voltage waveform detection circuit connect automobile power source two ends respectively,
That detects vehicle power supply voltage falls waveform, and the signal of detection is amplified by operational amplifier U6A and U6B, passes through electric capacity
C23 and C25 are filtered, and current limliting matching is carried out by resistance R26, finally by output end DY connection single chip machine controlling circuits,
Send the signal to single-chip microcomputer.
As shown in fig. 7, speech chip U3 connects No. 33 pin YIN ends of single-chip microcomputer by No. 3 pin, single-chip microcomputer is received
Control information, by the 4th, No. 5 pins connect loudspeaker, suggestion voice information, when door lock is judged as opening, is carried out
Voice broadcast：" having withdrawn a garrison ", when door lock is judged as closed mode, carries out voice broadcast：" having deployed troops on garrison duty ".
As shown in Figure 8,9, described electric power management circuit includes 3.3V power circuits and 4.2V power circuits, wherein,
The preferred preferred voltage stabilizing chip model of voltage stabilizing chip model PAM3101-3.3,4.2V power circuit of 3.3V power circuits
TPS54332,3.3V power supply are powered for single chip machine controlling circuit, and 4.2V power supplys are voltage waveform detection circuit, GPRS telecommunication circuits
Powered with voice playing circuit.
Described 3.3V voltage stabilizing chips MAX1615 is linear voltage stabilization chip, and 4.2V voltage stabilizing chips TPS54332 is DC-DC
Switching mode voltage stabilizing chip, can provide large power supply for GPRS communication modules.
A kind of automobile door lock state identification method, comprises the following steps：
Step 1: first first in use, needing to detect that automobile door lock is opening and closing two kinds of different conditions respectively
When two kinds of power supply different Voltage Drop waveforms, and both Voltage Drop waveforms are preserved.
Step 2: normal in use, when automobile door lock is turned on and off, single chip machine controlling circuit is examined by voltage waveform
Slowdown monitoring circuit carries out the detection of Voltage Drop waveform.
It is compared Step 3: the supply voltage detected is fallen into Wave data of the waveform with having preserved,
Further, when carrying out two kinds of waveform comparisons, using the method for calculating waveform fitting degree coefficient correlation：
1) method with approximate integration is taken to calculate two kinds of three kinds of integrated values for contrasting waveform by computer discrete point：
Wherein X is the wavy curve instantaneous value of the first waveform, and Y is the wavy curve instantaneous value of second of waveform
2) coefficient correlation is calculated：
PXYNumerical value is between 0-1, PXYNumerical value represents that the similarity of two kinds of waveforms is bigger closer to 1, PXYNumerical value is closer to 0
Represent that the similarity of two kinds of waveforms is smaller.
Step 4: judging the similarity of waveform, the waveform when the waveform detected is opened to the door lock preserved is similar
When spending big, that is, current door lock state is judged for opening, the waveform when the waveform detected and the door lock preserved closing
When similarity is big, that is, judge current door lock state for closed mode.
Step 5: when door lock is judged as opening, carrying out voice broadcast：" having withdrawn a garrison ", when door lock is judged as
During closed mode, voice broadcast is carried out：" having deployed troops on garrison duty ".
Step 6: automobile door lock status information is sent to cloud platform server, finally by cloud platform service by GPRS
Device is sent to user mobile phone APP clients, while the SIM card built in GPRS is also sent out automobile door lock status information by short message form
User mobile phone is delivered to, when user mobile phone can not receive the information of APP push, user can also be notified by short message mode.
Above example is implemented lower premised on technical solution of the present invention, gives detailed embodiment and tool
The operating process of body, but protection scope of the present invention is not limited to the above embodiments.Method therefor is such as without spy in above-described embodiment
It is conventional method not mentionlet alone bright.
Claims (5)
1. a kind of automobile door lock status identification means, it is characterised in that including single chip machine controlling circuit, voltage waveform detection electricity
Road, electric power management circuit, GPRS telecommunication circuits and voice playing circuit；
Described single chip machine controlling circuit connection voltage waveform detection circuit, GPRS telecommunication circuits and voice playing circuit, voltage
Waveform detection circuit input connects automobile power source two ends by automobile OBD interfaces, and that detects vehicle power supply voltage falls waveform,
Single chip machine controlling circuit detects that circuit receives the supply voltage detected and falls waveform by voltage waveform, is fallen by supply voltage
Fall comparison of wave shape and judge that automobile door lock is opening or closed mode, and the state of door lock is believed by GPRS telecommunication circuits
Breath is sent to cloud platform server, and voice broadcast is carried out by voice playing circuit；
Described single chip machine controlling circuit also sends door lock state short message by SIM card built-in in GPRS telecommunication circuits to car owner
Notify.
2. a kind of automobile door lock status identification means according to claim 1, it is characterised in that described single-chip microcomputer control
The preferred model of single-chip microcomputer in circuit：STM32F103T8U6, it connects voltage waveform by No. 32 pin and detects circuit
DY output ends, receive by voltage waveform detect electric circuit inspection to supply voltage fall waveform signal, by the 14th, No. 20-22
Pin connects GPRS telecommunication circuits, and voice playing circuit is connected by No. 33 pin.
3. a kind of automobile door lock status identification means according to claim 1, it is characterised in that described GPRS communication electricity
The preferred chip model in road is SIM808, is GPRS+BT_GPS combined chips, it passes through the 8th, 9,14-16 pins and single-chip microcomputer
Circuit connection is controlled, is connected, is connected by No. 66 pin with GSM antenna with SIM card circuit by 29-32 pins,
It is connected by No. 35 pin with gps antenna.
4. a kind of automobile door lock status identification means according to claim 1, it is characterised in that described voltage waveform inspection
The input VCC and GND of slowdown monitoring circuit connect automobile power source two ends respectively, and that detects vehicle power supply voltage falls waveform, detection
Signal is amplified by operational amplifier U6A and U6B, is filtered, is limited by resistance R26 by electric capacity C23 and C25
Stream matching, finally by output end DY connection single chip machine controlling circuits, sends the signal to single-chip microcomputer.
5. a kind of automobile door lock state identification method, it is characterised in that comprise the following steps：
Step 1: first first in use, when needing to detect that automobile door lock is opening and closing two kinds of different conditions respectively
The different Voltage Drop waveforms of two kinds of power supply, and both Voltage Drop waveforms are preserved；
Step 2: normal in use, when automobile door lock is turned on and off, single chip machine controlling circuit detects electricity by voltage waveform
Road carries out the detection of Voltage Drop waveform；
It is compared Step 3: the supply voltage detected is fallen into Wave data of the waveform with having preserved,
Further, when carrying out two kinds of waveform comparisons, using the method for calculating waveform fitting degree coefficient correlation：
1) method with approximate integration is taken to calculate two kinds of three kinds of integrated values for contrasting waveform by computer discrete point：
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Wherein X is the wavy curve instantaneous value of the first waveform, and Y is the wavy curve instantaneous value of second of waveform；
2) coefficient correlation is calculated：
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PXYNumerical value is between 0-1, PXYNumerical value represents that the similarity of two kinds of waveforms is bigger closer to 1, PXYNumerical value is represented closer to 0
The similarity of two kinds of waveforms is smaller；
Step 4: judge the similarity of waveform, the wave-form similarity when the waveform detected is opened with the door lock that has preserved is big
When, that is, current door lock state is judged for opening, and the waveform when the waveform detected is closed to the door lock preserved is similar
When spending big, that is, judge current door lock state for closed mode；
Step 5: when door lock is judged as opening, carrying out voice broadcast：" having withdrawn a garrison ", when door lock is judged as closing
During state, voice broadcast is carried out：" having deployed troops on garrison duty "；
Step 6: automobile door lock status information is sent to cloud platform server by GPRS, finally sent out by cloud platform server
To user mobile phone APP clients, at the same SIM card built in GPRS also automobile door lock status information by short message form send to
User mobile phone, when user mobile phone can not receive the information of APP push, can also be notified user by short message mode.
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| CN201710351101.7A CN107187419B (en) | 2017-05-18 | 2017-05-18 | Automobile door lock state identification device and identification method |
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| CN201710351101.7A CN107187419B (en) | 2017-05-18 | 2017-05-18 | Automobile door lock state identification device and identification method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109879134A (en) * | 2019-04-09 | 2019-06-14 | 深圳市海浦蒙特科技有限公司 | A kind of high pressure door lock detection circuit and method |
| CN112362990A (en) * | 2020-10-30 | 2021-02-12 | 上汽大众汽车有限公司 | Device and method for measuring reliability of electronic door lock system |
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| CN112362990A (en) * | 2020-10-30 | 2021-02-12 | 上汽大众汽车有限公司 | Device and method for measuring reliability of electronic door lock system |
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