CN111147164B - RSSI (received Signal Strength indicator) -based OBU (on-Board Unit) equipment communication range adjusting method and device - Google Patents
RSSI (received Signal Strength indicator) -based OBU (on-Board Unit) equipment communication range adjusting method and device Download PDFInfo
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- CN111147164B CN111147164B CN201911423403.6A CN201911423403A CN111147164B CN 111147164 B CN111147164 B CN 111147164B CN 201911423403 A CN201911423403 A CN 201911423403A CN 111147164 B CN111147164 B CN 111147164B
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- signal strength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
- G07B15/00—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
- G07B15/06—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems
- G07B15/063—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems using wireless information transmission between the vehicle and a fixed station
Abstract
The embodiment of the invention discloses an OBU equipment communication range adjusting method and device based on RSSI, wherein the method comprises the following steps: determining a target position of an OBU device installed in a target vehicle; wherein the target location comprises at least one location area within the target vehicle; obtaining a signal intensity value received when the OBU equipment is arranged at the target position and transacts with a road side unit; performing data test analysis on the received signal strength value, and determining an RSSI signal strength threshold value corresponding to the target position; and setting parameters of the OBU equipment based on the RSSI signal strength threshold value. By adopting the method for adjusting the communication range of the OBU equipment based on the RSSI, the OBU equipment can be more flexibly and conveniently installed, the sight line is prevented from being blocked, the interaction efficiency and the interaction accuracy with the road side unit are improved, and the expandability and the customizability of the OBU equipment are greatly improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of intelligent Internet of things, in particular to an OBU (on-board unit) equipment communication range adjusting method and device based on RSSI (received signal strength indicator), and further relates to electronic equipment and a computer readable storage medium.
Background
However, as vehicles equipped with the OBU devices are increasing, the installation position of the OBU devices inside the vehicles becomes one of important factors affecting the signal interaction efficiency of the OBU devices and RSU (Road Side Unit) devices in the ETC electronic toll collection system.
At present, current monolithic formula OBU receives factors such as the strong and weak of receiving and dispatching signal to influence, often can only install on the panel board of windshield or vehicle, and the mounted position is too limited, and the improper mounted position also probably shelters from the sight, and influences that the vehicle is pleasing to the eye. Therefore, how to adjust the OBU device to have different signal strength values according to different installation positions becomes a research focus of those skilled in the art.
Disclosure of Invention
Therefore, the embodiment of the invention provides an OBU device communication range adjusting method based on RSSI (received signal strength indicator), which aims to solve the problem that in the prior art, the OBU device can only be installed at a single position such as a front windshield or an instrument panel and the like for receiving an interactive signal, so that the user experience is poor.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
in a first aspect, an embodiment of the present invention provides a method for adjusting a communication range of an OBU device based on RSSI, including: determining a target position of an OBU device installed in a target vehicle; wherein the target location comprises at least one location area within the target vehicle; obtaining a signal intensity value received when the OBU equipment is arranged at the target position and transacts with a road side unit; performing data test analysis on the received signal strength value, and determining an RSSI signal strength threshold value corresponding to the target position; and setting parameters of the OBU equipment based on the RSSI signal strength threshold value.
Further, the method for adjusting the communication range of the OBU device based on the RSSI further includes: and after the OBU equipment is subjected to parameter setting, the OBU equipment is connected with an OBD interface of the target vehicle through a preset OBD patch cord.
Further, the parameter setting is performed on the OBU device based on the RSSI signal strength threshold, which specifically includes: determining parameter information of the OBU device based on the RSSI signal strength threshold; and setting parameters of the OBU equipment according to the parameter information.
Further, the received signal strength value comprises at least one signal strength value to be tested.
Further, the method for adjusting the communication range of the OBU device based on the RSSI further includes: discarding signal strength values less than the RSSI signal strength threshold.
In a second aspect, an embodiment of the present invention further provides an apparatus for adjusting a communication range of an OBU device based on RSSI, including: the position determining unit is used for determining a target position of the OBU equipment installed in the target vehicle; wherein the target location comprises at least one location area within the target vehicle; the signal strength obtaining unit is used for obtaining a signal strength value received when the OBU equipment is arranged at the target position and transacts with the road side unit; the data test analysis unit is used for carrying out data test analysis on the received signal strength value and determining an RSSI signal strength threshold value corresponding to the target position; and the parameter setting unit is used for setting parameters of the OBU equipment based on the RSSI signal strength threshold value.
Further, the apparatus for adjusting the communication range of the OBU device based on the RSSI further includes: and the connecting unit is used for connecting the OBU equipment with an OBD interface of the target vehicle through a preset OBD patch cord after the OBU equipment is subjected to parameter setting.
Further, the parameter setting unit is specifically configured to determine parameter information of the OBU device based on the RSSI signal strength threshold; and setting parameters of the OBU equipment according to the parameter information.
Further, the received signal strength value comprises at least one signal strength value to be tested.
Further, the apparatus for adjusting the communication range of the OBU device based on the RSSI further includes: and the signal strength value processing unit is used for discarding the signal strength value smaller than the RSSI signal strength threshold value.
In a third aspect, an embodiment of the present invention further provides an electronic device, including: a processor and a memory; the memory is configured to store a program of an OBU device communication range adjusting method implemented based on RSSI, and after the electronic device is powered on and runs the program of the OBU device communication range adjusting method implemented based on RSSI through the processor, the electronic device executes any one of the above OBU device communication range adjusting methods implemented based on RSSI.
In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, where one or more program instructions are contained in the computer-readable storage medium, and the one or more program instructions are used for a server to execute any one of the above methods for adjusting the communication range of an OBU device implemented based on an RSSI.
By adopting the method for adjusting the communication range of the OBU equipment based on the RSSI, disclosed by the invention, the installation position of the OBU equipment can be more flexible and convenient, the sight is prevented from being blocked, the efficiency and the accuracy of interaction with the road side unit are improved, and the use experience of a user is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
Fig. 1 is a flowchart of an OBU device communication range adjusting method implemented based on RSSI according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an apparatus for adjusting a communication range of an OBU device based on RSSI according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following describes an embodiment of the method for adjusting the communication range of the OBU device based on the RSSI in the present invention in detail. As shown in fig. 1, which is a flowchart of an RSSI-based method for adjusting a communication range of an OBU device according to an embodiment of the present invention, the specific implementation process includes the following steps:
step S101: a target location within the target vehicle for installation of the OBU device is determined.
Wherein the target location includes at least one location area within the target vehicle, the location area including but not limited to a rear windshield area, a seat area, or a trunk area within the target vehicle, and the like, and is not limited herein.
Step S102: and obtaining a signal intensity value received when the OBU equipment is arranged at the target position and transacts with a road side unit.
After the target position of the OBU device installed in the target vehicle is determined in step S101, a signal strength value received when the OBU device is set at the target position to perform a transaction with the road side unit may be further obtained in this step.
Specifically, in the embodiment of the present invention, the received signal strength of the OBU is adjusted by the RSSI threshold, the received signal strength of the OBU device needs to be tested in advance through a 5.8GHZ radio frequency communication unit preset in the OBU device at different installation locations during normal transaction with a road test unit (RSU), and is quantized to a specific signal strength value, and the received and transmitted signal strength of the OBU is adjusted by the RSSI threshold, so that the received and transmitted signal strength of the OBU meets the requirement of passing through a vehicle on a lane. Wherein the received signal strength values comprise at least one signal strength value to be tested.
Step S103: and carrying out data test analysis on the received signal strength value, and determining an RSSI signal strength threshold value corresponding to the target position.
After the signal strength value received when the transaction is performed is obtained in step S102, in this step, data test analysis may be performed on the received signal strength value to determine the RSSI signal strength threshold corresponding to the target location.
Specifically, a signal strength interval is determined, then some OBU devices with appropriate received signal strength values are selected from the determined signal strength interval and set to corresponding installation positions, data test analysis is carried out based on a preset main control unit, through analysis of a large amount of transaction test data, the signal strength value smaller than the RSSI signal strength threshold value is abandoned, and finally the optimal received signal strength value or interval of the OBU devices with different installation positions is determined, namely the RSSI signal strength threshold value corresponding to the target position is determined.
Step S104: and setting parameters of the OBU equipment based on the RSSI signal strength threshold value.
After the RSSI signal strength threshold corresponding to the target location is determined in step S103, in this step, parameters may be set for the OBU device based on the RSSI signal strength threshold.
Specifically, the parameter setting is performed on the OBU device based on the RSSI signal strength threshold, and the implementation process may include: determining parameter information of the OBU device based on the RSSI signal strength threshold; and setting parameters of the OBU equipment according to the parameter information.
In the embodiment of the invention, the received signal strength of the OBU can be adjusted through the RSSI threshold value, and the corresponding signal strength of the OBU equipment is adjusted and determined according to the requirements of different positions on the strength of the radio frequency signal. In addition, the conventional single-chip OBU equipment usually adopts a battery power supply mode, the OBU equipment cannot normally work when a power system fails, the function expansion of the OBU equipment is limited by the battery power supply mode, and if the OBU equipment is directly connected with a vehicle-mounted power supply for power supply, a wiring harness needs to be additionally added in the technology, so that the technical difficulty is increased. In the embodiment of the invention, after the OBU device is subjected to parameter setting, the OBU device can be connected with the OBD interface of the target vehicle through a preset OBD patch cord, one end of the OBD patch cord is connected with the OBD interface of the target vehicle, the other end of the OBD patch cord is connected with the OBU device, and the vehicle-mounted power supply can realize power supply for the OBU device without adding a wiring harness, so that the OBU device can also be installed at any suitable position in the vehicle instead of being limited to a windshield or an instrument panel. The OBD interface is responsible for providing stable, safe power supply for OBU equipment, is responsible for the mutual information between transmission vehicle ECU and the OBU simultaneously, realizes the control and the interaction to the vehicle, consequently existing advantage of keeping current monolithic formula OBU, and the mounted position is more nimble simultaneously, can interact in real time with target vehicle ECU again to very big increase OBU's scalability, customizability.
By adopting the method for adjusting the communication range of the OBU equipment based on the RSSI, disclosed by the invention, the installation position of the OBU equipment can be more flexible and convenient, the sight is prevented from being blocked, the efficiency and the accuracy of interaction with the road side unit are improved, and the use experience of a user is greatly improved.
Corresponding to the method for adjusting the communication range of the OBU equipment based on the RSSI, the invention also provides a device for adjusting the communication range of the OBU equipment based on the RSSI. Since the embodiment of the apparatus is similar to the above method embodiment, the description is relatively simple, and please refer to the description in the above method embodiment section for the relevant point, and the embodiment of the apparatus for adjusting the communication range of the OBU device based on RSSI described below is only illustrative. Fig. 2 is a schematic diagram of an apparatus for adjusting a communication range of an OBU device based on RSSI according to an embodiment of the present invention.
The invention relates to an OBU equipment communication range adjusting device based on RSSI, which comprises the following parts:
a location determination unit 201, configured to determine a target location in the target vehicle where the OBU device is installed.
Wherein the target location includes at least one location area within the target vehicle, the location area including but not limited to a rear windshield area, a seat area, or a trunk area within the target vehicle, and the like, and is not limited herein.
A signal strength obtaining unit 202, configured to obtain a signal strength value received when the OBU device is set in the target location to perform a transaction with a roadside unit.
And a data test analysis unit 203, configured to perform data test analysis on the received signal strength value, and determine an RSSI signal strength threshold corresponding to the target location.
A parameter setting unit 204, configured to perform parameter setting on the OBU device based on the RSSI signal strength threshold.
In the embodiment of the invention, the received signal strength of the OBU can be adjusted through the RSSI threshold value, and the corresponding signal strength of the OBU equipment is adjusted and determined according to the requirements of different positions on the strength of the radio frequency signal. In addition, the conventional single-chip OBU equipment usually adopts a battery power supply mode, the OBU equipment cannot normally work when a power system fails, the function expansion of the OBU equipment is limited by the battery power supply mode, and if the OBU equipment is directly connected with a vehicle-mounted power supply for power supply, a wiring harness needs to be additionally added in the technology, so that the technical difficulty is increased. In the embodiment of the invention, after the OBU device is subjected to parameter setting, the OBU device can be connected with the OBD interface of the target vehicle through a preset OBD patch cord, one end of the OBD patch cord is connected with the OBD interface of the target vehicle, the other end of the OBD patch cord is connected with the OBU device, and the vehicle-mounted power supply can realize power supply for the OBU device without adding a wiring harness, so that the OBU device can also be installed at any suitable position in the vehicle instead of being limited to a windshield or an instrument panel. The OBD interface is responsible for providing stable, safe power supply for OBU equipment, is responsible for the mutual information between transmission vehicle ECU and the OBU simultaneously, realizes the control and the interaction to the vehicle, consequently existing advantage of keeping current monolithic formula OBU, and the mounted position is more nimble simultaneously, can interact in real time with target vehicle ECU again to very big increase OBU's scalability, customizability.
By adopting the device for adjusting the communication range of the OBU equipment based on the RSSI, disclosed by the invention, the installation position of the OBU equipment can be more flexible and convenient, the sight is prevented from being blocked, the interaction efficiency and accuracy with the road side unit are improved, and the use experience of a user is greatly improved.
Corresponding to the method for adjusting the communication range of the OBU equipment based on the RSSI, the invention also provides electronic equipment. Since the embodiment of the electronic device is similar to the above method embodiment, the description is relatively simple, and please refer to the description of the above method embodiment, and the electronic device described below is only schematic. Fig. 3 is a schematic view of an electronic device according to an embodiment of the present invention.
The electronic device specifically includes: a processor 301 and a memory 302; the memory 302 is configured to run one or more program instructions, and is configured to store a program of an OBU device communication range adjustment method implemented based on RSSI, and after the server is powered on and runs the program of the OBU device communication range adjustment method implemented based on RSSI through the processor 301, the OBU device communication range adjustment method implemented based on RSSI is executed.
Corresponding to the method for adjusting the communication range of the OBU equipment based on the RSSI, the invention also provides a computer storage medium. Since the embodiment of the computer storage medium is similar to the above method embodiment, the description is simple, and please refer to the description of the above method embodiment, and the computer storage medium described below is only schematic.
The computer storage medium contains one or more program instructions for executing the above-mentioned method for adjusting communication range of an OBU device based on RSSI by a server.
In an embodiment of the invention, the processor or processor module may be an integrated circuit chip having signal processing capabilities. The processor may be a general-purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware component.
The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The processor reads the information in the storage medium and completes the steps of the method in combination with the hardware.
The storage medium may be a memory, for example, which may be volatile memory or nonvolatile memory, or which may include both volatile and nonvolatile memory.
The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory.
The volatile Memory may be a Random Access Memory (RAM) which serves as an external cache. By way of example and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (ddr Data Rate SDRAM), Enhanced SDRAM (ESDRAM), synclink DRAM (SLDRAM), and Direct memory bus RAM (DRRAM).
The storage media described in connection with the embodiments of the invention are intended to comprise, without being limited to, these and any other suitable types of memory.
Those skilled in the art will appreciate that the functionality described in the present invention may be implemented in a combination of hardware and software in one or more of the examples described above. When software is applied, the corresponding functionality may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.
Claims (6)
1. An OBU device communication range adjusting method based on RSSI is characterized by comprising the following steps:
determining a target position of an OBU device installed in a target vehicle; wherein the target location comprises at least one location area within the target vehicle;
obtaining a signal intensity value received when the OBU equipment is arranged at the target position and transacts with a road side unit;
performing data test analysis on the received signal strength value, and determining an RSSI signal strength threshold value corresponding to the target position; the received signal strength values comprise at least one signal strength value to be tested;
setting parameters of the OBU equipment based on the RSSI signal strength threshold value;
after the OBU equipment is subjected to parameter setting, the OBU equipment is connected with an OBD interface of the target vehicle through a preset OBD patch cord;
discarding signal strength values less than the RSSI signal strength threshold.
2. The method for adjusting the communication range of the OBU device based on the RSSI according to claim 1, wherein the parameter setting of the OBU device based on the RSSI signal strength threshold specifically comprises:
determining parameter information of the OBU device based on the RSSI signal strength threshold;
and setting parameters of the OBU equipment according to the parameter information.
3. The utility model provides an OBU equipment communication range adjusting device based on RSSI realizes which characterized in that includes:
the position determining unit is used for determining a target position of the OBU equipment installed in the target vehicle; wherein the target location comprises at least one location area within the target vehicle;
the signal strength obtaining unit is used for obtaining a signal strength value received when the OBU equipment is arranged at the target position and transacts with the road side unit;
the data test analysis unit is used for carrying out data test analysis on the received signal strength value and determining an RSSI signal strength threshold value corresponding to the target position; the received signal strength values comprise at least one signal strength value to be tested;
the parameter setting unit is used for carrying out parameter setting on the OBU equipment based on the RSSI signal strength threshold value; discarding signal strength values smaller than the RSSI signal strength threshold;
and the connecting unit is used for connecting the OBU equipment with an OBD interface of the target vehicle through a preset OBD patch cord after the OBU equipment is subjected to parameter setting.
4. The apparatus of claim 3, wherein the parameter setting unit is specifically configured to determine the parameter information of the OBU device based on the RSSI signal strength threshold; and setting parameters of the OBU equipment according to the parameter information.
5. An electronic device, comprising:
a processor; and the number of the first and second groups,
a memory, configured to store a program of an RSSI-based OBU device communication range adjustment method, where after the electronic device is powered on and runs the program of the RSSI-based OBU device communication range adjustment method through the processor, the electronic device executes the RSSI-based OBU device communication range adjustment method according to any one of claims 1 to 2.
6. A computer readable storage medium containing one or more program instructions for execution by a server of the RSSI-based implementation of the OBU device communication range adjustment method of any of claims 1-2.
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| CN111147164A (en) | 2020-05-12 |
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