CN111486852A - Intelligent traffic positioning and identifying system and method - Google Patents
Intelligent traffic positioning and identifying system and method Download PDFInfo
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- CN111486852A CN111486852A CN202010264151.3A CN202010264151A CN111486852A CN 111486852 A CN111486852 A CN 111486852A CN 202010264151 A CN202010264151 A CN 202010264151A CN 111486852 A CN111486852 A CN 111486852A
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- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/28—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network with correlation of data from several navigational instruments
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Abstract
The invention discloses an intelligent traffic positioning and identifying system and method, comprising a ground subsystem and a vehicle-mounted subsystem, wherein the ground subsystem comprises a ground induction antenna, a storage unit and a first processing unit; the ground induction antenna converts the state of the traffic signal lamp, the coordinate information of the ground induction antenna and the vehicle speed limit information into magnetic field information, generates an induction voltage signal from the magnetic field information through electromagnetic induction and sends the induction voltage signal to the vehicle-mounted subsystem; the vehicle-mounted subsystem comprises a vehicle-mounted induction antenna and a second processing unit; the vehicle-mounted induction antenna sends the induction voltage signal to the second processing unit, and the second processing unit demodulates the induction voltage signal to obtain the state of the traffic signal lamp, the coordinate information and the speed limit information of the ground induction antenna. The invention automatically receives high-precision positioning information, identifies the state of a traffic signal lamp, and can receive the speed limit information of the current road section; the device is not influenced by severe weather and special terrain, and has strong anti-interference capability.
Description
Technical Field
The invention belongs to the technical field of intelligent traffic positioning, and particularly relates to an intelligent traffic positioning and identifying system and method.
Background
With the rapid development of artificial intelligence, the automatic driving technology becomes a research hotspot. In the united states, autodrive cars have been driven from laboratories to public roads. In China, the automatic driving automobile is in a research and test stage, and a part of cities have specially defined road sections for automatic driving automobile tests.
One of the key technologies of automatic driving is positioning, and the vehicle-mounted computer needs to determine the safe driving speed of the current position according to the positioning. Currently, most of the positioning information required by automatic driving is derived from a satellite navigation positioning system. The satellite navigation positioning system has a positioning error of 3-10 meters due to the influence of factors such as orbit error, clock error, ionosphere delay, troposphere delay, multipath, receiver noise and the like. When the satellite navigation positioning signal reaches the earth surface, the minimum signal level is about-160 dBW, and the satellite navigation positioning signal is very easy to be interfered by the environment, such as multipath, shielding, terrain blocking and interference caused by other natural environments, and cannot be reliably received in tunnels and bridge openings, and the condition of weak current GPS signal exists.
When an automatic driving automobile passes through an intersection, a camera is mainly used for shooting a traffic signal lamp at present, and the image is identified and processed to judge the state of the traffic signal lamp. However, when severe weather such as rainstorm, snowstorm, dense fog or special terrain occurs, the camera cannot accurately and timely acquire the state of the traffic signal lamp, so that traffic jam is easily caused, and even traffic accidents are caused.
Disclosure of Invention
The embodiment of the invention provides an intelligent traffic positioning and identifying system and method, which are used for solving at least one problem in the prior art.
In a first aspect, an embodiment of the present invention provides an intelligent traffic positioning and identifying system, which includes a ground subsystem and a vehicle-mounted subsystem, wherein,
the ground subsystem comprises a ground induction antenna, a storage unit and a first processing unit; the storage unit stores coordinate information of the ground induction antenna and vehicle speed limit information; the first processing unit sends the traffic signal lamp state, the coordinate information of the ground induction antenna and the vehicle speed limit information to the ground induction antenna; the ground induction antenna converts the state of the traffic signal lamp, the coordinate information of the ground induction antenna and the vehicle speed limit information into magnetic field information, generates an induction voltage signal according to the magnetic field information and sends the induction voltage signal to the vehicle-mounted subsystem;
the vehicle-mounted subsystem comprises a vehicle-mounted induction antenna and a second processing unit; the vehicle-mounted induction antenna sends the induction voltage signal to a second processing unit, and the second processing unit demodulates the induction voltage signal to obtain the state of the traffic signal lamp, the coordinate information of the ground induction antenna and the speed limit information of the vehicle.
And further, obtaining the safe driving speed of the vehicle according to the state of the traffic signal lamp, the coordinate information of the ground induction antenna and the speed limit information of the vehicle, which are obtained after demodulation.
Further, the first processing unit comprises a first CPU, a frequency source, an amplitude keying modulator and a first power amplifier; wherein the content of the first and second substances,
the first CPU generates binary baseband signals according to the traffic signal lamp state and the vehicle speed limit information of the coordinate information of the ground induction antenna according to a message compiling method;
the amplitude keying modulator modulates a signal generated by a frequency source and the binary baseband signal to generate an amplitude keying modulation signal;
the first power amplifier amplifies the amplitude keying modulation signal to obtain a first amplified signal, and sends the first amplified signal to the ground induction antenna.
Further, the second processing unit comprises a second CPU, a second power amplifier and an AD sampling conversion chip; wherein the content of the first and second substances,
the second power amplifier amplifies the induced voltage signal to obtain a second amplified signal;
the AD sampling conversion chip samples the second amplified signal to obtain a sampling signal;
and the second CPU demodulates the sampling signal to obtain the state of the traffic signal lamp, the coordinate information of the ground induction antenna and the speed limit information of the vehicle.
Further, the ground induction antenna comprises a first tuning circuit, the first tuning circuit converts the state of the traffic signal lamp, the coordinate information of the ground induction antenna and the vehicle speed limit information into the magnetic field information, and the magnetic field information is generated into an induction voltage signal through magnetic induction.
Further, the vehicle-mounted induction antenna is further connected with a second tuning circuit, and the second tuning circuit is used for demodulating the induction voltage signal.
Furthermore, the intelligent traffic positioning and identifying system also comprises a judging module, wherein the judging module is used for judging whether the traffic signal lamp fails, and if the traffic signal lamp fails, the judging module directly acquires the state of the traffic signal lamp; if the fault occurs, the judging module sends the fault information of the traffic signal lamp to the storage unit and gives an alarm.
Further, the judging module judges whether the traffic signal lamp has a fault by performing the following operations:
comparing whether the voltage of the traffic signal lamp state is within a preset voltage value range, and if so, judging that the traffic signal lamp does not have a fault; if not, the traffic signal lamp is judged to have a fault.
In a second aspect, an embodiment of the present invention provides an intelligent traffic positioning and identifying method, including:
acquiring the state of a traffic signal lamp, coordinate information of a ground induction antenna and vehicle speed limit information;
converting the traffic signal lamp state, the coordinate information of the ground induction antenna and the vehicle speed limit information into magnetic field information;
and generating an induced voltage signal through electromagnetic induction based on the magnetic field information, and positioning the vehicle-mounted subsystem according to the induced voltage signal.
Further, the intelligent transportation positioning identification further comprises the following steps:
demodulating the induced voltage signal to obtain the state of a traffic signal lamp, the coordinate information of a ground induction antenna and the speed limit information of a vehicle;
and obtaining the safe driving speed of the vehicle according to the state of the traffic signal lamp, the coordinate information of the ground induction antenna and the speed limit information of the vehicle, which are obtained after demodulation.
The intelligent traffic positioning and identifying system can be arranged at the positions of a tunnel, a road intersection and the like where vehicles pass through, automatically receive high-precision positioning information, automatically identify the state of a traffic signal lamp and receive speed limit information of the current road section;
the intelligent traffic positioning and identifying system and the method are not influenced by severe weather and special terrain, have strong anti-interference capability, reliable data transmission, no maintenance, high availability and low cost, can be used as AN independent positioning and traffic signal source of a vehicle-mounted safety computer, and can also be used as a backup degradation system.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent traffic positioning and identifying system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a ground sensing antenna in accordance with one embodiment of the present invention;
fig. 3 is a schematic diagram of a vehicle mounted inductive antenna of one embodiment of the present invention.
Fig. 4 is a schematic flow chart of an intelligent traffic positioning and identifying method according to an embodiment of the present invention.
Detailed Description
The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that functional, methodological, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.
Example one
Fig. 1 is a schematic structural diagram of an intelligent transportation positioning and identifying system according to an embodiment of the present invention, and referring to fig. 1, the positioning and identifying system includes a ground subsystem and a vehicle-mounted subsystem, wherein,
the ground subsystem comprises a ground induction antenna, a storage unit and a first processing unit; the first processing unit is used for receiving the state of a signal lamp, and the storage unit stores coordinate information of the ground induction antenna and vehicle speed limit information; the first processing unit sends the traffic signal lamp state, the coordinate information of the ground induction antenna and the vehicle speed limit information to the ground induction antenna; the ground induction antenna converts the state of the traffic signal lamp, the coordinate information of the ground induction antenna and the vehicle speed limit information into magnetic field information, generates an induction voltage signal from the magnetic field information through electromagnetic induction and sends the induction voltage signal to the vehicle-mounted subsystem; positioning the vehicle-mounted subsystem according to the induced voltage signal; the signal lamp state can be directly acquired from a signal lamp circuit through a wired cable;
the vehicle-mounted subsystem comprises a vehicle-mounted induction antenna and a second processing unit; the vehicle-mounted induction antenna sends the induction voltage signal to a second processing unit, and the second processing unit demodulates the induction voltage signal to decode and demodulate the traffic signal lamp state, the coordinate information of the ground induction antenna and the vehicle speed limit information.
And further, obtaining the safe driving speed of the vehicle according to the state of the traffic signal lamp, the coordinate information of the ground induction antenna and the speed limit information of the vehicle, which are obtained after demodulation.
By utilizing the intelligent traffic positioning and identifying system of the embodiment, the positioning accuracy of the vehicle can reach the range of 0.3 meter.
Furthermore, the intelligent traffic positioning and identifying system also comprises a judging module, wherein the judging module is used for judging whether the traffic signal lamp fails, and if the traffic signal lamp fails, the judging module directly acquires the state of the traffic signal lamp; if the fault occurs, the judging module sends the fault information of the traffic signal lamp to the storage unit and gives an alarm; optionally, comparing whether the voltage of the traffic signal lamp state is within a preset voltage value range, and if the voltage of the traffic signal lamp state is within the preset voltage value range, determining that the traffic signal lamp does not have a fault; and if the voltage of the traffic signal lamp state exceeds the preset voltage value range, judging that the traffic signal lamp has a fault.
Specifically, the first processing unit of this embodiment includes a first CPU, a frequency source (e.g., a crystal oscillator), an amplitude keying modulator, and a first power amplifier; the first CPU can adopt a singlechip or an embedded CPU chip (such as an ARM chip) and the like; the first CPU generates binary baseband signals according to the traffic signal lamp state, the coordinate information of the ground induction antenna, the vehicle speed limit information and the like according to a message compiling method; an amplitude keying modulator modulates a frequency source signal and the binary baseband signal to generate an amplitude keying modulated signal; the first power amplifier amplifies the amplitude keying modulation signal to obtain a first amplified signal, and sends the first amplified signal to a ground induction antenna;
according to a Maxwell electromagnetic field equation, the ground induction antenna converts the first amplified signal into magnetic field information, and the magnetic field of the ground induction antenna is transmitted in space, so that the magnetic field information is generated into an induction voltage signal through electromagnetic induction, and the induction voltage signal is sent to the vehicle-mounted subsystem.
The memory cell of the present embodiment is a memory chip.
Specifically, the second processing unit includes a second CPU, a second power amplifier, and an AD sampling conversion chip, where the second CPU may also adopt a single chip microcomputer or an embedded ARM chip, etc.; in this embodiment, the sampling frequency of the AD sampling conversion chip may be 200MHz, and the second CPU demodulates the sampling signal by using an internally cured algorithm (i.e., a second tuning circuit described below) to demodulate the traffic signal light state, the coordinate information of the ground sensing antenna, and the vehicle speed limit information.
Optionally, the ground induction antenna may be installed at a road intersection or in a lane of a tunnel; preferably, the ground induction antenna is installed in the middle of a vehicle lane and can be installed under the ground in an embedding mode, so that normal driving is not affected. Specifically, each lane is provided with a set of ground induction antenna; for a multi-lane intersection, multiple sets of ground induction antennas need to be installed. The ground induction antenna is connected with a first processing unit arranged in a traffic signal lamp control box through a cable, and the memory is also arranged in the traffic signal lamp control box.
Optionally, the vehicle-mounted induction antenna may be mounted in the center of the bottom of the vehicle compartment.
Optionally, the ground induction antenna and the vehicle-mounted induction antenna communicate with each other through a magnetic field of an air gap, the distance between the ground induction antenna and the vehicle-mounted induction antenna is within a range of 100mm-220mm, information is transmitted through near-field magnetic field induction, the near-field communication method belongs to the field of near-field communication, and the near-field communication method is high in anti-interference capability, high in reliability and free of influence of severe weather and special terrains.
Specifically, the first processing unit collects the states of the traffic lights in real time, including red light, green light, yellow light, steering or fault information; the storage unit stores coordinate information of the center of the ground induction antenna embedded under each lane and vehicle speed limit information; the first processing unit sends the state of the traffic signal lamp, the coordinate information of the ground induction antenna and the vehicle speed limit information to the ground induction antenna periodically (300 ms).
Referring to fig. 2, fig. 2 is a schematic diagram of a ground induction antenna according to an embodiment of the present invention, the ground induction antenna is 8-shaped, in this embodiment, the ground induction antenna is made of brass, and has a magnetic permeability of 4 pi × 10-7H/m, conductivity 5.8 × 107S/m, in fig. 2, the transverse length of the ground sensing antenna may be 5 m, and the length of the ground sensing antenna may be modified according to practical situations, which is only an example.
The ground induction antenna comprises a first tuning circuit, wherein the first tuning circuit converts the state of a signal lamp, the coordinate information of the ground induction antenna and the vehicle speed limit information into magnetic field information, generates an induction voltage signal by electromagnetic induction and sends the induction voltage signal to the vehicle-mounted subsystem, and the first tuning circuit comprises a first series capacitor Cs1A first parallel capacitor Cp1And a first series resistance Rs1The first series resistance Rs1Respectively connected with the ground induction antenna and the first series capacitor Cs1And a first parallel capacitor Cp1The first parallel capacitor Cp1Connecting the ground induction antenna; the first series capacitor Cs1A first parallel capacitor Cp1And a first series resistance Rs1The parameter value of (a) can be determined according to the length of the ground sensing antenna.
Further, in this embodiment, the tuning frequency of the ground induction antenna may be 27MHz to generate a time harmonic field with a frequency of 27MHz, the modulation depth is 25% -100%, and the traffic signal status, the coordinate information of the ground induction antenna, and the vehicle speed limit information are modulated by an Amplitude Shift Keying (ASK) modulation method. It is understood that in other embodiments, the tuning frequency of the ground sensing antenna may be other values, and is not limited in particular.
Referring to fig. 3, fig. 3 is a schematic diagram of a vehicle-mounted induction antenna according to an embodiment of the present invention, the vehicle-mounted induction antenna may have a rectangular outer profile, wherein the vehicle-mounted induction antenna may be made of brass and has a magnetic permeability of 4 pi × 10-7H/m, conductivity 5.8 × 107S/m, the brass of the vehicle-mounted induction antenna is 0.072 mm;
the vehicle-mounted induction antenna is also connected with a second tuning circuit, and the second tuning circuit comprises a second series capacitor Cs2A second parallel capacitor Cp2And a second series resistance Rs2Said second series resistance Rs2Respectively connected with the vehicle-mounted induction antenna and a second series capacitor Cs2And a second parallel capacitor Cp2The second parallel capacitor Cp2And connecting the vehicle-mounted induction antenna. In one embodiment, the second series capacitance Cs215.1pF, second parallel capacitor Cp211.8pF, second series resistance Rs215 Ω, here only for example, the second series capacitance C can be adjusted according to the length of the vehicle-mounted induction antennas2A second parallel capacitor Cp2And a second series resistance Rs2The parameter value of (2).
Further, in the present embodiment, the tuning frequency of the vehicle-mounted induction antenna is 27MHz, and it is understood that in other embodiments, the tuning frequency of the ground induction antenna may also be other values, which is not limited herein.
The ground subsystem of the intelligent traffic positioning and recognizing system converts the coordinate information, the vehicle speed limit information and the collected traffic signal lamp state of the ground induction antenna into magnetic field information, generates an induction voltage signal from the magnetic field information through electromagnetic induction, and sends the induction voltage signal to the vehicle-mounted subsystem, and the vehicle-mounted subsystem demodulates the induction voltage signal to demodulate the coordinate information, the vehicle speed limit information and the traffic signal lamp state of the ground induction antenna, so that ground-vehicle communication is realized. When a vehicle provided with the vehicle-mounted subsystem passes through the ground induction antenna, the vehicle-mounted induction antenna receives magnetic field information generated by the ground induction antenna and generates an induction voltage signal through magnetic induction; the second processing unit demodulates and decodes the received induced voltage signal, and then sends the decoded traffic signal lamp state, the coordinate information of the ground induction antenna and the vehicle speed limit information to a terminal device (such as a vehicle-mounted safety computer), and the terminal device calculates the safe driving speed of the vehicle according to the traffic signal lamp state, the coordinate information of the ground induction antenna and the vehicle speed limit information.
Example two
Fig. 4 is a schematic flow chart of an intelligent transportation positioning and identifying method according to an embodiment of the present invention, and referring to fig. 4, the method includes the following steps:
acquiring the state of a traffic signal lamp, coordinate information of a ground induction antenna and vehicle speed limit information;
converting the traffic signal lamp state, the coordinate information of the ground induction antenna and the vehicle speed limit information into magnetic field information;
generating an induced voltage signal by electromagnetic induction based on the magnetic field information; specifically, when the induced voltage signal passes through a continuous 8-shaped intersection of the ground induction antenna, the magnetic field phase of the magnetic field information received by the ground induction antenna changes, so as to position the vehicle-mounted subsystem;
demodulating the induced voltage signal to obtain the state of a traffic signal lamp, the coordinate information of a ground induction antenna and the speed limit information of a vehicle;
and calculating the safe driving speed of the vehicle according to the state of the traffic signal lamp, the coordinate information of the ground induction antenna and the speed limit information of the vehicle, which are obtained after demodulation.
Further, the method also comprises the steps of judging whether the traffic signal lamp has a fault or not, and directly acquiring the state of the traffic signal lamp if the traffic signal lamp has no fault; if the fault occurs, alarming according to the fault information of the traffic signal lamp;
optionally, the step of judging whether the traffic signal lamp fails includes the following steps:
comparing whether the voltage of the traffic signal lamp state is within a preset voltage value range, and if so, judging that the traffic signal lamp does not have a fault; if not, the traffic signal lamp is judged to have a fault.
The specific implementation manner of the intelligent traffic positioning and identifying method is basically the same as the working flow of the intelligent traffic positioning and identifying system of the first embodiment, and is not described herein again.
The invention has the following advantages:
the intelligent traffic positioning and identifying system can be arranged at the positions of a tunnel, a road intersection and the like where vehicles pass through, automatically receive high-precision positioning information, automatically identify the state of a traffic signal lamp and receive speed limit information of the current road section;
the intelligent traffic positioning and identifying system is not influenced by severe weather and special terrain, has strong anti-interference capability, reliable data transmission, no maintenance, high availability and low cost, can be used as AN independent positioning and traffic signal source of a vehicle-mounted safety computer, and can also be used as a backup degradation system.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An intelligent traffic positioning and identifying system comprises a ground subsystem and a vehicle-mounted subsystem, wherein,
the ground subsystem comprises a ground induction antenna and a first processing unit; the first processing unit sends the traffic signal lamp state, the coordinate information of the ground induction antenna and the vehicle speed limit information to the ground induction antenna;
the ground induction antenna converts the state of the traffic signal lamp, the coordinate information of the ground induction antenna and the vehicle speed limit information into magnetic field information, generates an induction voltage signal according to the magnetic field information and sends the induction voltage signal to the vehicle-mounted subsystem; positioning the vehicle-mounted subsystem according to the induced voltage signal;
the vehicle-mounted subsystem comprises a vehicle-mounted induction antenna and a second processing unit; the vehicle-mounted induction antenna sends the induction voltage signal to a second processing unit, and the second processing unit demodulates the induction voltage signal to obtain the state of the traffic signal lamp, the coordinate information of the ground induction antenna and the speed limit information of the vehicle.
2. The system of claim 1, wherein the safe driving speed of the vehicle is obtained according to the traffic signal lamp state, the coordinate information of the ground induction antenna and the vehicle speed limit information obtained after demodulation.
3. The system of claim 1, wherein the first processing unit comprises a first CPU, a frequency source, an amplitude keying modulator, and a first power amplifier; wherein the content of the first and second substances,
the first CPU generates binary baseband signals according to the traffic signal lamp state and the vehicle speed limit information of the coordinate information of the ground induction antenna according to a message compiling method;
the amplitude keying modulator modulates a signal generated by a frequency source and the binary baseband signal to generate an amplitude keying modulation signal;
the first power amplifier amplifies the amplitude keying modulation signal to obtain a first amplified signal, and sends the first amplified signal to the ground induction antenna.
4. The system of claim 1, wherein the second processing unit comprises a second CPU, a second power amplifier, and an AD sampling conversion chip; wherein the content of the first and second substances,
the second power amplifier amplifies the induced voltage signal to obtain a second amplified signal;
the AD sampling conversion chip samples the second amplified signal to obtain a sampling signal;
and the second CPU demodulates the sampling signal to obtain the state of the traffic signal lamp, the coordinate information of the ground induction antenna and the speed limit information of the vehicle.
5. The system of claim 1, wherein the ground induction antenna comprises a first tuning circuit, the first tuning circuit converting the traffic signal status, coordinate information of the ground induction antenna, and vehicle speed limit information into the magnetic field information, the magnetic field information being generated into an induced voltage signal by magnetic induction.
6. The system of claim 5, wherein a second tuning circuit is further coupled to the vehicle-mounted inductive antenna, the second tuning circuit configured to demodulate the induced voltage signal.
7. The system according to any one of claims 1 to 6, wherein the intelligent traffic positioning and identifying system further comprises a judging module, the judging module is used for judging whether the traffic signal lamp has a fault, and if the traffic signal lamp has no fault, the judging module directly acquires the state of the traffic signal lamp; if the fault occurs, the judging module sends the fault information of the traffic signal lamp to the storage unit and gives an alarm.
8. The system of claim 7, wherein the determination module determines whether the traffic signal light is malfunctioning by:
comparing whether the voltage of the traffic signal lamp state is within a preset voltage value range, and if so, judging that the traffic signal lamp does not have a fault; if not, the traffic signal lamp is judged to have a fault.
9. An intelligent traffic positioning and identifying method comprises the following steps:
acquiring the state of a traffic signal lamp, coordinate information of a ground induction antenna and vehicle speed limit information;
converting the traffic signal lamp state, the coordinate information of the ground induction antenna and the vehicle speed limit information into magnetic field information;
and generating an induced voltage signal through electromagnetic induction based on the magnetic field information, and positioning the vehicle-mounted subsystem according to the induced voltage signal.
10. The method of claim 9, further comprising the step of:
demodulating the induced voltage signal to obtain the state of a traffic signal lamp, the coordinate information of a ground induction antenna and the speed limit information of a vehicle;
and obtaining the safe driving speed of the vehicle according to the state of the traffic signal lamp, the coordinate information of the ground induction antenna and the speed limit information of the vehicle, which are obtained after demodulation.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112215089A (en) * | 2020-09-21 | 2021-01-12 | 卡斯柯信号有限公司 | Video identification method of subway color light signal machine |
| CN112455505A (en) * | 2020-11-20 | 2021-03-09 | 首钢京唐钢铁联合有限责任公司 | Method and device for tracking and positioning ladle locomotive |
| CN115512560A (en) * | 2022-10-17 | 2022-12-23 | 广汽埃安新能源汽车股份有限公司 | Vehicle control system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080238799A1 (en) * | 2007-03-26 | 2008-10-02 | Sony Ericsson Mobile Communications Japan, Inc. | Near field communication antenna and mobile device |
| US20130063281A1 (en) * | 2011-09-09 | 2013-03-14 | Colin M. Malaska | Vehicle traffic signal notification system |
| CN107958607A (en) * | 2017-12-29 | 2018-04-24 | 吴蜀魏 | A kind of vehicle mounted traffic signal combination recognition system |
| CN108447292A (en) * | 2018-04-10 | 2018-08-24 | 江苏微科云信息技术有限公司 | A kind of wireless intelligent traffic signal guidance system |
| CN108461901A (en) * | 2017-02-21 | 2018-08-28 | 恩智浦有限公司 | Near field electromagnetic incudes（NFEMI）Antenna |
| CN109360438A (en) * | 2018-11-29 | 2019-02-19 | 驭势科技（北京）有限公司 | A kind of car speed decision system and method based on traffic lights |
-
2020
- 2020-04-07 CN CN202010264151.3A patent/CN111486852A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080238799A1 (en) * | 2007-03-26 | 2008-10-02 | Sony Ericsson Mobile Communications Japan, Inc. | Near field communication antenna and mobile device |
| US20130063281A1 (en) * | 2011-09-09 | 2013-03-14 | Colin M. Malaska | Vehicle traffic signal notification system |
| CN108461901A (en) * | 2017-02-21 | 2018-08-28 | 恩智浦有限公司 | Near field electromagnetic incudes（NFEMI）Antenna |
| CN107958607A (en) * | 2017-12-29 | 2018-04-24 | 吴蜀魏 | A kind of vehicle mounted traffic signal combination recognition system |
| CN108447292A (en) * | 2018-04-10 | 2018-08-24 | 江苏微科云信息技术有限公司 | A kind of wireless intelligent traffic signal guidance system |
| CN109360438A (en) * | 2018-11-29 | 2019-02-19 | 驭势科技（北京）有限公司 | A kind of car speed decision system and method based on traffic lights |
Non-Patent Citations (1)
| Title |
|---|
| 张华波: "基于FPGA的短波跳频干扰机关键技术研究", 《中国优秀硕士学位论文全文数据库信息科技辑》 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112215089A (en) * | 2020-09-21 | 2021-01-12 | 卡斯柯信号有限公司 | Video identification method of subway color light signal machine |
| CN112455505A (en) * | 2020-11-20 | 2021-03-09 | 首钢京唐钢铁联合有限责任公司 | Method and device for tracking and positioning ladle locomotive |
| CN115512560A (en) * | 2022-10-17 | 2022-12-23 | 广汽埃安新能源汽车股份有限公司 | Vehicle control system |
| CN115512560B (en) * | 2022-10-17 | 2024-04-12 | 广汽埃安新能源汽车股份有限公司 | Vehicle control system |
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