CN113567767A - Transaction area testing method and device based on lattice antenna - Google Patents
Transaction area testing method and device based on lattice antenna Download PDFInfo
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Abstract
The invention provides a method and a device for testing a transaction area based on a dot-matrix antenna, wherein the method moves a dot-matrix transaction testing component consisting of a plurality of testing antennas through a stepping device, detects and records transaction results of the testing antennas at a transaction section, can obtain transaction testing results of the testing antennas at a plurality of point positions in a corresponding space to be tested and an adjustable vehicle-mounted unit, forms a transaction result space dot-matrix diagram, visually displays the influence of space position factors on the transaction results, and is used for accurately determining the transaction area. Furthermore, the transaction is carried out on a plurality of different receiving powers and transmitting powers by controlling the adjustable vehicle-mounted unit, and the lowest receiving power and transmitting power required under the condition of successful transaction are recorded, so that the comprehensive test of space position influencing factors and equipment working power factors is realized, and the accurate demarcation of a transaction area under the multi-element reference condition is realized.
Description
Technical Field
The utility model relates to a field electronic equipment technical field especially relates to a transaction region test method and device based on dot matrix antenna.
Background
In recent years, ETC (Electronic Toll Collection) is widely popularized and applied to application scenes such as highways and parking lots. The ETC realizes the exchange of vehicle information and the reading and writing of transaction information by performing wireless communication and information exchange between a vehicle-mounted unit mounted on a vehicle and a transaction antenna mounted on a lane of a toll station.
In the ETC transaction process at the present stage, a phased array antenna is mostly adopted as a transaction antenna, and the field intensity distribution of the antenna is not matched with the actual transaction area. In the early design and arrangement process of the lane, the communication transaction condition between the vehicle-mounted unit and the transaction antenna needs to be tested to define a transaction area. The success or failure of a communication transaction is related to many factors, such as the distance between the on-board unit and the transaction antenna, the received power and the transmitted power of the device during communication. In order to guide the layout design of the lane, a large amount of transaction test data needs to be acquired in a possible transaction space to meet the reference requirement.
Disclosure of Invention
The embodiment of the invention provides a transaction area testing method and device based on a dot-matrix antenna, which are used for eliminating or improving one or more defects in the prior art and solving the problem that the prior art is limited to a single relative position and ignores space influence factors during ETC transaction testing.
The technical scheme of the invention is as follows:
in one aspect, the invention provides a transaction area testing method based on a dot-matrix antenna, the method is operated on a controller, the controller is connected with and controls a dot-matrix transaction testing component, the dot-matrix transaction testing component is composed of a plurality of testing antennas regularly arranged in the same plane, each testing antenna is optionally connected with an adjustable vehicle-mounted unit, the dot-matrix transaction testing component is arranged on a stepping device, and the method comprises the following steps:
sending one or more displacement instructions to the stepping device to adjust the dot-matrix transaction testing component to move to a transaction section corresponding to each displacement instruction;
the transaction testing device comprises a dot matrix transaction testing component, a lane antenna and a portal antenna, wherein the dot matrix transaction testing component comprises a plurality of test antennas, a plurality of transaction sections and a plurality of transaction sections, and the transaction sections are arranged on the same plane;
and receiving a transaction result returned by each test antenna at each transaction section, and generating a transaction result space lattice diagram based on the relative position of each test antenna in each transaction section and the transaction result, wherein the space corresponding to the transaction result space lattice diagram is the space formed by each transaction section.
In some embodiments, the method further comprises: and defining a trading area according to the trading result space lattice diagram.
In some embodiments, each shift instruction corresponds to a transaction profile that is set along the set route by a set step distance.
In some embodiments, before sending the transaction test instruction to the dot-matrix transaction testing component at each of the transaction sections, respectively, the method further includes:
and sending transaction test configuration information to the adjustable vehicle-mounted unit so as to adjust the adjustable vehicle-mounted unit to respectively perform transaction tests according to multiple groups of receiving power and transmitting power from small to large in the test process of each test antenna.
In some embodiments, the power range of each group of the received powers is-65 dBm through-50 dBm, and each group of the received powers is set according to a first power interval; the power range of each group of the transmitting power is-35 dBm-45 dBm, and the transmitting power of each group is set according to a second power interval.
In some embodiments, the method further comprises:
recording the lowest receiving power and the lowest transmitting power of the adjustable vehicle-mounted unit at each transaction section under the condition that the transaction of each test antenna is successful;
generating a receiving power diagram and a transmitting power diagram based on the relative position of each test antenna in each transaction section and the lowest receiving power and the lowest transmitting power of the adjustable vehicle-mounted unit under the condition of successful transaction;
and defining a transaction area and transmitting power and receiving power required by transaction in the transaction area according to the transaction result space lattice diagram, the receiving power diagram and the transmitting power diagram.
In some embodiments, the stepping device is further provided with a laser range finder, and after one or more displacement instructions are sent to the stepping device, the method further comprises: and continuously receiving stepping distance detection information returned by the laser range finder, and controlling the stepping device to adjust the dot matrix transaction testing component to reach an appointed position according to the stepping distance detection information.
In another aspect, the present invention further provides an ETC transaction area testing apparatus, including: the lattice transaction testing component consists of a plurality of testing antennas which are regularly arranged in the same plane; the dot matrix transaction testing component is arranged on the stepping device; the adjustable vehicle-mounted unit is selectively connected with each test antenna through the antenna switching device; a control machine, connected to the dot matrix type transaction testing component, the stepping device and the adjustable vehicle-mounted unit, for executing the method for testing transaction area based on the dot matrix type antenna according to claims 1 to 6; and the power supply assembly is used for supplying power to the ETC transaction area testing device.
In some embodiments, the device further comprises a laser range finder disposed on the stepper device and connected to the controller.
In some embodiments, the power supply assembly further comprises a dc battery pack.
In another aspect, the present invention further provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the steps of the method are implemented.
The invention has the beneficial effects that:
in the method and the device for testing the transaction area based on the lattice antenna, the lattice transaction testing component formed by a plurality of testing antennas is moved by the stepping device, the transaction result of each testing antenna at the transaction section is detected and recorded, the transaction testing results of the testing antennas at a plurality of point positions in the corresponding space to be tested and the adjustable vehicle-mounted unit can be obtained, a transaction result space lattice diagram is formed, the influence of space position factors on the transaction result is visually displayed, and the transaction area is accurately determined.
Furthermore, the transaction is carried out on a plurality of different receiving powers and transmitting powers by controlling the adjustable vehicle-mounted unit, and the lowest receiving power and transmitting power required under the condition of successful transaction are recorded, so that the comprehensive test of space position influencing factors and equipment working power factors is realized, and the accurate demarcation of a transaction area under the multi-element reference condition is realized.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
It will be appreciated by those skilled in the art that the objects and advantages that can be achieved with the present invention are not limited to the specific details set forth above, and that these and other objects that can be achieved with the present invention will be more clearly understood from the detailed description that follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic flow chart illustrating a transaction area testing method based on a lattice antenna according to an embodiment of the present invention;
fig. 2 is a schematic flow chart illustrating a transaction area testing method based on a lattice antenna according to another embodiment of the present invention;
fig. 3 is a transaction result space lattice diagram in the transaction area testing method based on the lattice antenna according to an embodiment of the present invention;
fig. 4 is a flowchart of generating a received power diagram and a transmitted power diagram in a transaction area testing method based on a lattice antenna according to an embodiment of the present invention;
fig. 5 is a block diagram illustrating a structure of an ETC transaction area testing device according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the scheme according to the present invention are shown in the drawings, and other details not so relevant to the present invention are omitted.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, elements, steps or components, but does not preclude the presence or addition of one or more other features, elements, steps or components.
It is also noted herein that the term "coupled," if not specifically stated, may refer herein to not only a direct connection, but also an indirect connection in which an intermediate is present.
Phased array antennas are widely popularized in various nationwide provinces (regions and cities) since national networking of expressways in 2015, and most of conventional lane antennas of the expressways nationwide are phased array antennas by the end of 2020. The phased array antenna is one of positioning antennas, and the antenna can position the electronic tag of the vehicle and determine whether to perform transaction with the electronic tag according to the position of the electronic tag. However, the antenna field strength distribution is not perfectly matched with the artificially planned trading area in general, so that the trading failure rate of the vehicle in the artificially planned trading area is higher in some cases.
The invention provides a transaction area testing method and device based on a lattice antenna, aiming at more accurately dividing and positioning transaction areas of the antenna and a common antenna. Under the condition that the conventional toll station and ETC portal frames are not closed, the dot-matrix test of the antenna transaction area in a specific area is realized by utilizing a vehicle-mounted or portable dot-matrix antenna transaction area testing device according to the working mode of lane antenna or portal frame antenna transaction, and the transaction test results of all points in the corresponding space are obtained so as to define the transaction area based on the test results. The test method can also be used for evaluating the positioning accuracy of the positioning antenna, evaluating actual transaction areas of different power vehicle-mounted units and the like.
On one hand, the invention provides a transaction area testing method based on a dot-matrix antenna, the method runs on a control machine, the control machine is connected with and controls a dot-matrix transaction testing component, the dot-matrix transaction testing component is composed of a plurality of testing antennas which are regularly arranged in the same plane, each testing antenna is optionally connected with an adjustable vehicle-mounted unit, the dot-matrix transaction testing component is arranged on a stepping device, as shown in fig. 1, the method comprises the following steps of S101-S103:
it should be noted that, the steps S101 to S103 described in this embodiment are not limited to the order of the steps, and it should be understood that the order of the steps may be parallel or exchanged under reasonable conditions.
Step S101: and sending one or more displacement instructions to the stepping device to adjust the dot matrix type transaction testing component to move to the transaction section corresponding to each displacement instruction.
Step S102: and transmitting transaction test instructions to each test antenna in the dot-matrix transaction test assembly at each transaction section in sequence, so that each test antenna performs transaction test with the lane antenna or the portal antenna according to a set sequence.
Step S103: and receiving the transaction results returned by the test antennas at the transaction sections, and generating a transaction result space lattice diagram based on the relative position of each test antenna in each transaction section and the transaction results, wherein the space corresponding to the transaction result space lattice diagram is the space formed by the transaction sections.
In step S101, the controller sends displacement instructions to the stepping device, and specifically, adjusts the transaction cross section where the dot matrix transaction test component is located according to the position or stepping distance corresponding to each displacement instruction. The transaction section refers to a section where the dot matrix transaction testing component is located, and the dot matrix transaction testing component is formed by regularly arranging a plurality of testing antennas in the same plane, so that the whole section of the dot matrix transaction testing component is the plane where each testing antenna is located. Further, the test antennas may be arranged in a matrix, concentric rings, or other regular patterns. The number of the test antennas can be 16, 32 or more, so as to achieve the purpose of accurate test.
In some embodiments, each shift instruction corresponds to a transaction profile that is set along the set route by a set step distance. The area capable of effectively performing transaction is not fixed due to uneven field intensity distribution of the lane antenna or the portal antenna, and differences exist, in order to measure and confirm the effective transaction area, the dot-matrix transaction testing component is driven by the stepping device, the dot-matrix transaction testing component is used for crossing the area to be tested along a set track according to a set stepping distance, and after each stepping distance is completed, the dot-matrix transaction testing component performs transaction testing on the section of the point. For example, the stepping device may be used to conduct a transaction test in the vehicle travel direction, in the vehicle travel direction under the lane antenna or the mast antenna. In some embodiments, the dot-matrix transaction testing assembly may be disposed on a vehicle and displaced by operation of the vehicle.
In some embodiments, the stepping device is further provided with a laser range finder, and after one or more displacement instructions are sent to the stepping device, the method further comprises: and continuously receiving stepping distance detection information returned by the laser range finder, and controlling the stepping device to adjust the dot matrix transaction testing component to reach an appointed position according to the stepping distance detection information.
In step S102, after receiving a transaction test instruction on a transaction cross section, the test antenna of the dot matrix transaction test component performs a transaction test with the lane antenna or the portal antenna according to a set sequence. Specifically, each test antenna is connected with an adjustable vehicle-mounted unit in turn, and the adjustable vehicle-mounted unit is used as a control center to perform test transaction according to a preset transaction rule. And the test antennas are sequentially used as the antennas of the adjustable vehicle-mounted unit to perform communication transaction with the lane antenna or the portal antenna one by one. Specifically, each test antenna can be connected with the adjustable vehicle-mounted unit through the antenna switching device, the transaction sequence of each test antenna can be freely set, but only one test antenna is tested at a time to prevent interference.
In step S103, after the transaction test is completed by connecting each test antenna to the adjustable on-board unit at each transaction section, the transaction test result is returned to the control machine and recorded. Because the relative position of each test antenna in the dot matrix transaction test assembly is fixed, and the transaction section position of the dot matrix transaction test assembly for testing under the driving of the stepping device is also fixed, a plurality of space point positions in a set space passed by the dot matrix transaction test assembly can be tested, and a corresponding test result is obtained. And recording the transaction result of the test antenna at the corresponding space point position as a transaction result space lattice diagram according to the position relation of each space point position. Specifically, in the transaction result space bitmap, the point of successful transaction may be marked as 1, and the point of failed transaction may be marked as 0. Or adopting different color marks to form a visual image, and marking the point of successful transaction as green and the point of failed transaction as red. The generated transaction result space lattice diagram can be used for analyzing transaction conditions, judging field intensity distribution conditions of the lane antenna or the portal antenna and guiding to demarcate an effective transaction area.
In some embodiments, as shown in fig. 2, the method further includes step S104: and defining a trading area according to the trading result space lattice diagram. Specifically, the area with the highest transaction success rate corresponding to the transaction result space dot-matrix diagram is marked as the transaction area of the corresponding lane antenna or portal antenna, so that ETC transaction of passing vehicles in the transaction area is prompted, and the transaction success rate is improved.
In the spatial dot-matrix diagram of the transaction result shown in fig. 3, solid black dots represent spatial point locations where the transaction fails, and hollow black dots represent spatial point locations where the transaction succeeds, and according to the distribution of the hollow black dots, a transaction area with a high transaction success rate can be drawn.
In some embodiments, before step S102, that is, before sending the transaction test instruction to the dot-matrix transaction testing component at each transaction section, the method further includes: and sending transaction test configuration information to the adjustable vehicle-mounted unit so as to adjust the adjustable vehicle-mounted unit to respectively perform transaction tests according to multiple groups of receiving power and transmitting power from small to large in the test process of each test antenna.
In the embodiment, on the basis of testing with the spatial difference as a variable, the transmitting power and the receiving power of the test antenna are further introduced as variables. Specifically, at each spatial point of each transaction section, the corresponding test antenna respectively adopts multiple groups of transmitting power and receiving power from low to high so as to determine the transaction test result under each power.
In some embodiments, the power range of each group of receiving power is-65 dBm-50 dBm, each group of receiving power is set according to a first power interval, and the first power interval can be 1dBm or 2 dBm; the power range of each group of emission power is-35 dBm-45 dBm, each group of emission power is set according to a second power interval, and the second power interval can be 1dBm or 2 dBm.
In some embodiments, as shown in fig. 4, the method further includes steps S201 to S203:
step S201: and recording the lowest receiving power and the lowest transmitting power of the adjustable vehicle-mounted unit at each transaction section under the condition that the transaction of each test antenna is successful.
Step S202: and generating a receiving power map and a transmitting power map based on the relative position of each test antenna in each transaction section and the lowest receiving power and the lowest transmitting power of the adjustable vehicle-mounted unit under the condition of successful transaction.
Step S203: and defining a trading area according to the trading result space lattice diagram, the receiving power diagram and the transmitting power diagram.
In steps S201 to S203 of this embodiment, each test antenna in each transaction section performs transaction tests with multiple receiving powers and transmitting powers from small to large to obtain the lowest receiving power and the lowest transmitting power that can achieve successful transaction. When specific receiving power and transmitting power are tested, a set number of times can be tested, only when the transaction is successful and reaches a preset proportion, the transaction result is taken as the test result under the condition, for example, the k-th test antenna in the first transaction section is tested for 10 times under the conditions that the receiving power is-65 dBm and the transmitting power is-35 dBm, and only when the transaction is successful for 9 times in 10 times, the k-th test antenna in the first transaction section is judged to be successful under the conditions that the receiving power is-65 dBm and the transmitting power is-35 dBm. Further, after the lowest receiving power and the lowest transmitting power of each space point on each transaction section, which can successfully transact, are determined, the lowest receiving power and the lowest transmitting power of each test antenna on each transaction section are marked on the space map, and a receiving power map and a transmitting power map are generated. Further, a trading area and transmitting power and receiving power required by trading in the trading area are defined according to the trading result space lattice diagram, the receiving power diagram and the transmitting power diagram, wherein the trading success rate of each space point in the defined trading area can be required to be higher than a set value.
In another aspect, the present invention also provides an ETC transaction area testing apparatus, as shown in fig. 5, including: the lattice transaction testing component consists of a plurality of testing antennas which are regularly arranged in the same plane; the stepping device is provided with the dot-matrix transaction testing component; the adjustable vehicle-mounted unit is selectively connected with each test antenna through the antenna switching device; the control machine is connected with the dot matrix type transaction testing component, the stepping device and the adjustable vehicle-mounted unit and is used for executing the transaction area testing method based on the dot matrix type antenna in the steps S101 to S103; and the power supply assembly is used for supplying power to the ETC transaction area testing device.
In the present embodiment, the dot-matrix transaction test module is actually a module formed by a plurality of test antennas regularly arranged. The test antennas may be arranged in a predetermined shape or spatial relationship. The stepping device is a device capable of adjusting the position of the dot matrix transaction testing component, can comprise a track and a driving motor, and can also be directly arranged on an engineering vehicle. The structure of the adjustable vehicle-mounted unit is the same as that of a common vehicle-mounted unit, and the adjustable vehicle-mounted unit comprises a radio frequency circuit and can adjust the receiving power and the transmitting power based on parameter information sent by a control machine. The control machine may be a single chip computer, a microcomputer or other electronic devices capable of storing and executing computer programs. The power supply assembly may include an ac to dc circuit to be used for an external power supply, or may directly include a dc battery pack.
In some embodiments, the device further comprises a laser range finder, the laser range finder is arranged on the stepping device and connected with the control machine, and the movement distance of the dot matrix transaction test component is continuously fed back through the laser range finder so as to adjust the movement of the stepping device.
In another aspect, the present invention further provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the steps of the method are implemented.
The invention will now be described with reference to several specific examples:
the embodiment provides an ETC transaction area test device, includes: the lattice transaction testing component consists of a plurality of testing antennas which are regularly arranged in the same plane, the adjustable vehicle-mounted unit can adopt a common vehicle-mounted unit with adjustable power, and each testing antenna in the lattice transaction testing component is connected with the adjustable vehicle-mounted unit through an antenna switching device and is controlled to be switched by a controller. The control machine is a microcomputer loaded with test control software. The dot-matrix transaction testing component is arranged on the stepping device, and the control machine controls the stepping device to move the dot-matrix transaction testing component. The stepping device comprises a track and a driving motor, and the dot-matrix transaction testing component is arranged on the track and driven by the driving motor.
Specifically, in the ETC transaction area testing device, the dot matrix type transaction testing component generally consists of 16 or 32 antenna boards; the transmitting power and the receiving power of the adjustable vehicle-mounted unit are adjustable. The microcomputer PC is loaded with test software. In addition, the device also comprises auxiliary equipment such as a laser range finder, a power supply component, an antenna switching device and the like.
The ETC transaction area testing device is used for testing an ETC roadside unit and mainly comprises a lane antenna/portal antenna (including an antenna controller), a front-end toll collection system (a toll station is an industrial personal computer and lane toll collection software, an ETC portal is an industrial personal computer and portal toll collection software) and a toll station system.
Furthermore, after the test software initializes the receiving power and the transmitting power of the adjustable vehicle-mounted unit at one transaction section, the adjustable vehicle-mounted unit is controlled to be sequentially connected with each antenna board of the dot-matrix transaction test assembly and to perform ETC transaction with the lane antenna/portal antenna. After the transaction is completed, a transaction result is fed back, and if the transaction is successful, the point is marked as success; if not, or if the transaction fails, this point is marked as failure. Replacing the next antenna point on the dot-matrix transaction testing component, and continuing to perform ETC transaction and marking; after the alternate transaction, the marking work of all antenna points on the lattice type transaction testing component is completed, and a transaction lattice of the section is formed. The lattice type test antenna selects the next transaction section for test work according to a certain stepping distance; thus, after stepping and testing are carried out in sequence, a transaction lattice of the whole lane is formed, and then a part with higher transaction success rate is selected and outlined as a lane antenna or portal antenna transaction area. And further judging the positioning success rate of the positioning antenna based on the transaction result so as to evaluate the positioning accuracy of the positioning antenna under the receiving power and the transmitting power.
Furthermore, the adjustable vehicle-mounted unit can also select different receiving power and transmitting power, measure the transaction lattice of the antenna for multiple times, form antenna transaction areas under different power values, and evaluate the transaction areas of the vehicle-mounted units with different power under the lane antenna/portal antenna. Specifically, the receiving power of the vehicle-mounted unit can be adjusted from low to high on each test antenna, the receiving power which is successfully traded firstly is recorded on a trading point array after trading is completed, trading power values of all points are formed, and a power diagram of actual trading of the antenna is outlined.
Further, a laser range finder is adopted to measure the stepping distance of the lattice type test antenna. A power supply assembly is adopted as power supply equipment; an antenna switching device: the switching device is used for switching the test antennas in the adjustable vehicle-mounted unit and the dot matrix type transaction test assembly; a stepping device: and controlling the dot matrix transaction testing component to move step by step.
The ETC transaction area testing device can directly test the lane antenna or the portal antenna without modifying the lane antenna or the portal antenna and the parameter configuration of the charging software.
The ETC transaction area testing device can be deployed on a detection vehicle, and can be used in a portable mode and used for field installation testing. When the ETC transaction area testing device is deployed on a detection vehicle, the transaction area of the lane antenna and the portal antenna can be tested without stopping the vehicle.
In one embodiment, the work flow of the ETC transaction area testing device includes the following 1 to 14:
1. the equipment is connected, and the dot matrix transaction testing component is arranged outside the antenna transaction area.
2. And setting a test mode and a stepping distance through a control machine, wherein the test mode comprises a process of appointing transaction test.
3. And initializing the laser range finder through a control machine, and setting an original point.
4. And initializing the transmitting power and the receiving power of the adjustable vehicle-mounted unit through a control machine.
5. The adjustable vehicle-mounted unit is connected to each antenna plate of the dot matrix type transaction testing assembly by controlling the antenna switching device through the control machine.
6. If the adjustable vehicle-mounted unit and the antenna board can receive the broadcast data frame (namely bst data frame) sent by the lane antenna/portal antenna, the adjustable vehicle-mounted unit and the antenna board reply to the broadcast response frame (namely VST data frame); otherwise, this point is marked as a failure.
7. If the adjustable vehicle-mounted unit and the antenna board can receive a vehicle information frame (namely a GetSecure data frame) sent by the lane antenna/portal antenna, replying a vehicle information response frame; otherwise, this point is marked as a failure.
8. If the adjustable vehicle-mounted unit and the antenna plate can receive a transaction information frame (namely a transfer channel data frame) sent by the lane antenna/portal antenna, replying a transaction information response frame; otherwise, this point is marked as a failure.
9. If the transaction between the adjustable vehicle-mounted unit and the antenna plate and the lane antenna/portal antenna is successful, marking the point as success; otherwise, this point is marked as a failure.
10. After the marking work of the first antenna plate is finished, controlling an antenna switching device through a control machine, connecting the adjustable vehicle-mounted unit to the next antenna plate of the dot matrix type transaction testing assembly, and sequentially finishing the steps 6-9; and marking all the antenna boards on the test antenna in sequence.
11. The stepping device is controlled by the control machine, the dot matrix transaction testing component is stepped for a certain distance, and in the process, the laser range finder records the moving distance of the dot matrix transaction testing component and is matched with the dot matrix transaction testing component to complete stepping work.
12. At the new testing position, the testing and marking work of all the antenna boards is completed in sequence; after marking is completed, marking is performed again by stepping the same or different distance.
13. And after finishing all marking work in the antenna transaction area, displaying the transaction dot matrix through the control machine and outputting the actual antenna transaction area.
14. If necessary, different receiving powers and transmitting powers can be set, the transaction lattice of the antenna is measured, antenna transaction areas under different power values are formed, and the transaction areas of the vehicle-mounted units with different powers under the lane antenna/gantry antenna are evaluated.
In another embodiment, the work flow of the ETC transaction area test device includes the following 1 to 13:
1. the equipment is connected, and the dot matrix transaction testing component is arranged outside the antenna transaction area.
2. The test mode, power step and step distance are set by a control machine.
3. And initializing the laser range finder through a control machine, and setting an original point.
4. The adjustable vehicle-mounted unit is connected to each antenna plate of the dot matrix type transaction testing assembly by controlling the antenna switching device through the control machine.
5. And setting the receiving power of the adjustable vehicle-mounted unit step by step from the low power.
6. If the adjustable vehicle-mounted unit and the antenna board can receive the broadcast data frame (namely bst data frame) sent by the lane antenna/portal antenna, the adjustable vehicle-mounted unit and the antenna board reply to the broadcast response frame (namely VST data frame); otherwise, the received power is increased.
7. If the adjustable vehicle-mounted unit and the antenna board can receive a vehicle information frame (namely a GetSecure data frame) sent by the lane antenna/portal antenna, replying a vehicle information response frame; otherwise, the received power is increased.
8. If the adjustable vehicle-mounted unit and the antenna plate can receive a transaction information frame (namely a transfer channel data frame) sent by the lane antenna/portal antenna, replying a transaction information response frame; otherwise, the received power is increased.
9. When the transaction between the adjustable vehicle-mounted unit and the antenna plate and the lane antenna/portal antenna is successful, the power is received at the point; otherwise, this point is marked as a failure.
10. After the marking work of the first antenna plate is finished, controlling an antenna switching device through a control machine, connecting the adjustable vehicle-mounted unit to the next antenna plate of the dot matrix type transaction testing assembly, and finishing the steps 5-9 in sequence; and marking all the antenna boards on the test antenna in sequence.
11. The stepping device is controlled by the control machine, the dot matrix transaction testing component is stepped for a certain distance, and in the process, the laser range finder records the moving distance of the dot matrix transaction testing component and is matched with the dot matrix transaction testing component to complete stepping work.
12. At the new testing position, the marking work of all the antenna boards is completed in sequence; after marking is completed, marking is performed again by stepping the same or different distance.
13. After finishing all marking work in the antenna transaction area, displaying the transaction lattice with power value through the controller, and outputting the power value of the antenna actual transaction.
In summary, in the method and the device for testing the transaction area based on the lattice antenna, the lattice transaction testing component composed of the plurality of testing antennas is moved by the stepping device, the transaction result of each testing antenna at the transaction section is detected and recorded, the transaction testing results of the testing antennas at the plurality of point positions in the corresponding space to be tested and the adjustable vehicle-mounted unit can be obtained, a transaction result space lattice diagram is formed, the influence of the space position factors on the transaction result can be visually displayed, and the transaction area can be accurately determined.
Furthermore, the transaction is carried out on a plurality of different receiving powers and transmitting powers by controlling the adjustable vehicle-mounted unit, and the lowest receiving power and transmitting power required under the condition of successful transaction are recorded, so that the comprehensive test of space position influencing factors and equipment working power factors is realized, and the accurate demarcation of a transaction area under the multi-element reference condition is realized.
Those of ordinary skill in the art will appreciate that the various illustrative components, systems, and methods described in connection with the embodiments disclosed herein may be implemented as hardware, software, or combinations of both. Whether this is done in hardware or software depends upon the particular application and design constraints imposed on the solution. 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. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the invention are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. A "machine-readable medium" may include any medium that can store or transfer information. Examples of a machine-readable medium include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, Radio Frequency (RF) links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.
It should also be noted that the exemplary embodiments mentioned in this patent describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments and/or in combination with or instead of the features of the other embodiments in the present invention.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the embodiment of the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A transaction area testing method based on a dot-matrix antenna is characterized in that the method runs on a control machine, the control machine is connected with and controls a dot-matrix transaction testing component, the dot-matrix transaction testing component is composed of a plurality of testing antennas which are regularly arranged in the same plane, each testing antenna is optionally connected with an adjustable vehicle-mounted unit, the dot-matrix transaction testing component is arranged on a stepping device, and the method comprises the following steps:
sending one or more displacement instructions to the stepping device to adjust the dot-matrix transaction testing component to move to a transaction section corresponding to each displacement instruction;
the transaction testing device comprises a dot matrix transaction testing component, a lane antenna and a portal antenna, wherein the dot matrix transaction testing component comprises a plurality of test antennas, a plurality of transaction sections and a plurality of transaction sections, and the transaction sections are arranged on the same plane;
and receiving a transaction result returned by each test antenna at each transaction section, and generating a transaction result space lattice diagram based on the relative position of each test antenna in each transaction section and the transaction result, wherein the space corresponding to the transaction result space lattice diagram is the space formed by each transaction section.
2. The lattice antenna based transaction area testing method of claim 1, wherein the method further comprises: and defining a trading area according to the trading result space lattice diagram.
3. The lattice antenna-based transaction area testing method of claim 1, wherein before sending a transaction testing instruction to the lattice transaction testing component at each transaction section, respectively, further comprising:
and sending transaction test configuration information to the adjustable vehicle-mounted unit so as to adjust the adjustable vehicle-mounted unit to respectively perform transaction tests according to multiple groups of receiving power and transmitting power from small to large in the test process of each test antenna.
4. The method for testing the transaction area based on the lattice antenna as claimed in claim 3, wherein the power range of each group of the received power is-65 dBm to-50 dBm, and each group of the received power is set according to a first power interval; the power range of each group of the transmitting power is-35 dBm-45 dBm, and the transmitting power of each group is set according to a second power interval.
5. The method for testing the transaction area based on the lattice antenna as claimed in claim 3, wherein the method further comprises:
recording the lowest receiving power and the lowest transmitting power of the adjustable vehicle-mounted unit at each transaction section under the condition that the transaction of each test antenna is successful;
generating a receiving power diagram and a transmitting power diagram based on the relative position of each test antenna in each transaction section and the lowest receiving power and the lowest transmitting power of the adjustable vehicle-mounted unit under the condition of successful transaction;
and defining a transaction area and transmitting power and receiving power required by transaction in the transaction area according to the transaction result space lattice diagram, the receiving power diagram and the transmitting power diagram.
6. The method for testing the transaction area based on the lattice antenna as claimed in claim 1, wherein the stepping device is further provided with a laser range finder, and after one or more displacement commands are sent to the stepping device, the method further comprises:
and continuously receiving stepping distance detection information returned by the laser range finder, and controlling the stepping device to adjust the dot matrix transaction testing component to reach an appointed position according to the stepping distance detection information.
7. An ETC transaction area testing device, comprising:
the lattice transaction testing component consists of a plurality of testing antennas which are regularly arranged in the same plane;
the dot matrix transaction testing component is arranged on the stepping device;
the adjustable vehicle-mounted unit is selectively connected with each test antenna through the antenna switching device;
a control machine, connected to the dot matrix type transaction testing component, the stepping device and the adjustable vehicle-mounted unit, for executing the method for testing transaction area based on the dot matrix type antenna according to claims 1 to 6;
and the power supply assembly is used for supplying power to the ETC transaction area testing device.
8. The ETC transaction area testing device of claim 7, further comprising a laser range finder disposed on the stepper device and connected to the controller.
9. The ETC transaction area testing device of claim 7, wherein the power supply assembly further comprises a dc battery pack.
10. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method according to any of claims 1 to 6 are implemented when the processor executes the program.
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| CN202110814554.5A CN113567767A (en) | 2021-07-19 | 2021-07-19 | Transaction area testing method and device based on lattice antenna |
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