CN114363860A - Method and device for calibrating parameters of vehicle-mounted unit and related product - Google Patents
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Abstract
The invention relates to a method for calibrating parameters of a vehicle-mounted unit and a related product thereof. The method comprises the following steps: outputting test information about a parameter calibration area to a target vehicle-mounted unit located in the parameter calibration area; acquiring feedback information about the test information sent by the target vehicle-mounted unit; and selectively executing parameter calibration operation on the target vehicle-mounted unit according to the test information and the feedback information. According to the scheme of the invention, the customized parameter calibration of the OBUs on different types of vehicles can be realized without introducing manual intervention. In addition, the invention also relates to a device and a system for calibrating the parameters of the vehicle-mounted unit.
Description
Technical Field
The present invention relates generally to the field of on-board unit technology. More particularly, the present invention relates to a method for parameter calibration of an on-board unit, a device and a computer program product for performing the aforementioned method, an apparatus for parameter calibration of an on-board unit and a system for parameter calibration of an on-board unit.
Background
This section is intended to provide a background or context to the embodiments of the invention that are recited in the claims. The description herein may include concepts that could be pursued, but are not necessarily ones that have been previously conceived or pursued. Thus, unless otherwise indicated herein, what is described in this section is not prior art to the description and claims in this application and is not admitted to be prior art by inclusion in this section.
Electronic Toll Collection (ETC) generally relates to automatic Toll Collection in various scenes (freeways, superstores, and the like), and mainly achieves the purpose of paying without parking through interaction between an On Board Unit (OBU) and a background, wherein the OBU is mounted On a vehicle. Along with the popularization of ETC (especially front-loading ETC), the OBU of producer needs the multiple motorcycle type of adaptation host computer factory, and need carry out unified parameter calibration to the OBU according to general standard. However, in practical applications, such an OBU configured by a common standard is not suitable for all vehicle models, and the front-mounted OBU may pass through the station abnormally due to various factors such as the installation position and the material of the vehicle glass. Therefore, an OBU manufacturer can perform specific standard calibration according to each type of vehicle, and needs to add a plurality of manual control stations and manually regulate and control one by one according to vehicle types. It can be seen that this approach undoubtedly increases the production management work of the OBU manufacturer and leads to a reduction in production efficiency, thereby increasing the production cost of the OBU.
Disclosure of Invention
In order to solve at least the technical problems described in the above background section, the present invention provides a solution for calibrating parameters of an on-board unit. By utilizing the scheme of the invention, the customized parameter calibration of the OBUs on different types of vehicles can be realized without introducing manual intervention. Particularly relates to a front OBU, which can effectively reduce the production cost of the OBU. In view of this, the present invention provides solutions in the following aspects.
A first aspect of the invention provides a method for parameter calibration of an on-board unit adapted to be mounted to different types of vehicles, the method comprising: outputting test information about a parameter calibration area to a target vehicle-mounted unit located in the parameter calibration area; acquiring feedback information about the test information sent by the target vehicle-mounted unit; and selectively executing parameter calibration operation on the target vehicle-mounted unit according to the test information and the feedback information.
In one embodiment, the parameter calibration area comprises a plurality of areas, and each area is associated with a different function to be calibrated of the target on-board unit, wherein performing the parameter calibration operation on the target on-board unit comprises: and executing parameter calibration operation of corresponding functions to be calibrated on target vehicle-mounted units in different areas.
In one embodiment, the parameter calibration operation in which the respective functions to be calibrated are performed on the target on-board units located in different areas includes: acquiring a reference parameter of a function to be calibrated corresponding to each region; judging whether the function to be calibrated corresponding to each region is qualified or not according to the test information and the feedback information of each region; and in response to the fact that the function to be calibrated corresponding to any area is determined to be unqualified, performing parameter calibration operation on the function to be calibrated corresponding to any area according to the reference parameter of any area.
In an embodiment, the feedback information at least includes a current parameter of the function to be calibrated, and the determining whether the function to be calibrated corresponding to each region is qualified and performing the parameter calibration operation includes: judging whether the quantity of the test information and the quantity of the feedback information of any region meet preset conditions or not; in response to the condition that the preset condition is not met, determining that the function to be calibrated corresponding to any area is unqualified; and adjusting the current parameter according to the reference parameter of the function to be calibrated corresponding to any region so as to finish calibrating the parameter of the function to be calibrated corresponding to any region.
In one embodiment, wherein the plurality of regions includes a first region, a second region, and a third region, the method includes: performing parameter calibration with respect to a first wake-up sensitivity index at the first region; performing parameter calibration at the second region with respect to a second wake-up sensitivity index, a receive sensitivity index, and a transmit power index; and/or performing a detection regarding a toll-free transaction function at the third area.
In one embodiment, the method further comprises: and controlling the vehicle provided with the target vehicle-mounted unit to sequentially pass through the first area, the second area and the third area so as to execute corresponding parameter calibration operation and/or detection operation.
In one embodiment, where the test information includes a test signal sent by an analog rsu, performing the corresponding parameter calibration operation includes: in response to detecting that the target on-board unit is located at the first zone, performing the following parameter calibration operations at the first zone: sending a test signal to the target on-board unit; detecting whether a wake-up identification data packet fed back by the target vehicle-mounted unit based on the test signal is received, wherein the wake-up identification data packet at least comprises a wake-up sensitivity service identification and a current wake-up gear, and responding to the fact that the wake-up identification data packet is received and the number of the wake-up identification data packets and the number of the test signals are determined not to meet a non-wake-up test condition, and adjusting the current wake-up gear downwards until a first wake-up sensitivity index of the target vehicle-mounted unit reaches the standard; and in response to detecting that the target on-board unit is located at the second zone, performing the following parameter calibration operations at the second zone: sending a test signal to the target on-board unit; detecting whether a wake-up identification data packet fed back by the target vehicle-mounted unit based on the test signal is received, wherein the wake-up identification data packet at least comprises a wake-up sensitivity service identification and a current wake-up gear, and responding to the fact that the wake-up identification data packet is received and the number of the wake-up identification data packets and the number of the test signals are determined not to meet a wake-up test condition, and adjusting the current wake-up gear upwards or downwards until a second wake-up sensitivity index of the target vehicle-mounted unit reaches the standard; detecting whether a receiving identification data packet fed back by the target vehicle-mounted unit based on the test signal is received, wherein the receiving identification data packet at least comprises a receiving sensitivity service identification and a current receiving sensitivity gear, and responding to the receiving identification data packet and determining that the number of the receiving identification data packets and the number of the test signals do not meet receiving test conditions, adjusting the current receiving sensitivity gear upwards or downwards until a receiving sensitivity index of the target vehicle-mounted unit meets the standard; and detecting whether a vehicle service table signal fed back by the target vehicle-mounted unit based on the test signal is received or not, responding to the received vehicle service table signal and determining that the number of the vehicle service table signal and the number of the test signal do not meet a transmission power test condition, acquiring a transmission identification data packet sent by the target vehicle-mounted unit, wherein the transmission identification data packet at least comprises a transmission power service identification and a current transmission power gear, and circularly adjusting the current transmission power gear until the transmission power index of the target vehicle-mounted unit reaches the standard.
In one embodiment, the obtaining of the feedback information about the test information sent by the target on-board unit comprises: acquiring a wakeup identification data packet, a receiving identification data packet and a transmitting identification data packet which are sent by the target vehicle-mounted unit based on a Bluetooth communication mode; and acquiring a vehicle service table signal transmitted by the target on-board unit based on a dedicated short-range communication mode DSRC.
A second aspect of the invention provides an apparatus comprising: a processor; and a memory storing computer instructions for parameter calibration of an on-board unit, which, when executed by the processor, cause the apparatus to perform the method of the foregoing first aspect and in the following embodiments.
A third aspect of the invention provides a computer program product comprising computer instructions for parameter calibration of an onboard unit, which when executed by the processor, causes the method as described in the foregoing first aspect and in the following embodiments to be carried out.
A fourth aspect of the invention provides an apparatus for parameter calibration of an on-board unit adapted to be mounted to different types of vehicles, the apparatus comprising: a roadside simulator configured to output test information on a parameter calibration area to a target on-board unit located in the parameter calibration area; the communication host is configured to establish communication connection with the target vehicle-mounted unit and acquire feedback information about the test information sent by the target vehicle-mounted unit; and the controller is connected with the road side simulator and the communication host and is configured to selectively execute parameter calibration operation on the target vehicle-mounted unit according to the test information and the feedback information.
In one embodiment, wherein the apparatus further comprises: a conveying mechanism configured to carry a vehicle on which an on-board unit is mounted and convey the vehicle to the parameter calibration area; and the controller is connected with the conveying mechanism and is also configured to regulate and control the conveying speed of the conveying mechanism.
A fifth aspect of the present invention provides a system for calibrating on-board unit parameters, comprising: at least one on-board unit installed on one type of vehicle and supporting a toll collection function; and the apparatus according to the foregoing second aspect or the device according to the fourth aspect, wherein the apparatus or the device is configured to perform a parameter calibration operation for a no-parking-charge function of the on-board unit for a vehicle entering a parameter calibration area.
By utilizing the scheme provided by the invention, the parameter calibration can be carried out on the vehicle-mounted units on different types of vehicles entering the parameter calibration area, so that the customized parameter calibration of the OBUs on the different types of vehicles can be realized without introducing manual intervention. In some embodiments of the present invention, different parameter calibration operations may be performed for different zones, thereby satisfying different detection requirements for the on-board unit. In other embodiments of the invention, the vehicle can be controlled to sequentially pass through the first area, the second area and the third area to realize the calibration of the basic communication index of the vehicle-mounted unit on the vehicle and the detection of the non-stop charging transaction function, and the vehicle-mounted unit is more adapted to the mounted vehicle while the parameters are determined to meet the standard requirements, so that the performance of the vehicle-mounted unit is effectively improved.
Drawings
The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which like reference numerals refer to similar or corresponding parts and in which:
FIG. 1 is a diagram illustrating an exemplary scenario of a system for parameter calibration of an on-board unit in accordance with an embodiment of the present invention;
FIG. 2 is a flow chart illustrating one method for parameter calibration of an on-board unit in accordance with an embodiment of the present invention;
FIG. 3 is a flow chart illustrating another method for parameter calibration of an on-board unit in accordance with an embodiment of the present invention;
FIG. 4 is a flow chart illustrating yet another method for parameter calibration of an on-board unit in accordance with an embodiment of the present invention;
FIG. 5 is a block diagram illustrating an apparatus for parameter calibration of an on-board unit in accordance with an embodiment of the present invention;
FIG. 6 is a block diagram illustrating another apparatus for parameter calibration of an on-board unit in accordance with an embodiment of the present invention; and
FIG. 7 is a block diagram illustrating a system for parameter calibration of an on-board unit in accordance with an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention, belong to the protection scope of the present invention.
It should be understood that the terms "first", "second", "third" and "fourth", etc. in the claims, the description and the drawings of the present invention are used for distinguishing different objects and are not used for describing a particular order. The terms "comprises" and "comprising," when used in the specification and claims of this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and claims of this application, the singular form of "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the term "and/or" as used in the specification and claims of this specification refers to any and all possible combinations of one or more of the associated listed items and includes such combinations.
As used in this specification and claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
The following detailed description of embodiments of the invention refers to the accompanying drawings.
In order to better understand the solution of the present invention, the parameter calibration process of the on-board unit will be described below with reference to fig. 1.
FIG. 1 is a diagram illustrating an exemplary scenario of a system 100 for parameter calibration of an on-board unit in accordance with an embodiment of the present invention. In the context of the present invention, the aforementioned scenario may be an interactive scenario of parameter calibration between the onboard unit 101 and the device 102 mounted on various types of vehicles. For example, the parameter calibration method may specifically include a scenario of parameter calibration before the front-mounted OBU is offline, a scenario of parameter calibration after the rear-mounted OBU is sold, or other application scenarios that need to perform OBU parameter calibration. It should be noted that the specific installation position of the OBU is not limited herein, and may be installed at the windshield of the vehicle or other suitable positions, for example. And the specific structure of the device 102 will be described below.
In an actual application process, the device 102 may perform a parameter calibration operation on the on-board unit on the vehicle entering the parameter calibration area to achieve customized calibration of the on-board unit, so that the on-board unit may be more adaptive to the vehicle where the on-board unit is located, thereby improving performance of the on-board unit.
FIG. 2 is a flow chart illustrating a method 200 for parameter calibration of an on-board unit in accordance with an embodiment of the present invention. It should be noted that the method 200 may be understood as a specific interaction process between the device 102 and the vehicle-mounted unit 101 in fig. 1, and may be specifically executed on the device 102 side. Therefore, the detailed description above in connection with fig. 1 also applies below.
As shown in fig. 2, at step S201, test information about the parameter calibration area may be output to a target on-board unit located in the parameter calibration area. In some embodiments, the aforementioned parameter calibration area may be divided according to a specific application scenario and detection requirements. For example, when detecting the basic communication function of the in-vehicle unit, a plurality of detection areas may be divided according to a communication index (wake-up, reception, transmission power, or the like) to be detected. The test information may be adjusted according to actual detection requirements, for example, Beacon Service Table (BST) signals simulated for communication indexes to be detected. It should be noted that the description of the parameter calibration area and the test information is only an exemplary description, and the solution of the present invention is not limited thereto.
Next, at step S202, the aforementioned feedback information about the test information transmitted by the target on-board unit may be acquired. It is noted that the target on-board unit in the context of the present invention may comprise an on-board unit mounted on any type of vehicle and requiring parameter calibration. In the actual test process, when receiving the test information, the target vehicle-mounted unit responds to the test information to generate feedback information and sends the feedback information to the equipment.
Next, at step S203, a parameter calibration operation for the target on-board unit may be selectively performed based on the test information and the feedback information. Whether the target vehicle-mounted unit meets the requirement or not can be determined through analysis of the test information and the feedback information so as to selectively adjust the parameters of the target vehicle-mounted unit, and therefore customized calibration of the vehicle-mounted unit is achieved, the vehicle-mounted unit can be more adaptive to a vehicle where the vehicle-mounted unit is located, and performance of the vehicle-mounted unit is improved. Especially, aiming at parameter calibration processing before batch front-mounted OBUs are offline, excessive manual intervention is not required to be introduced in the whole process, and the OBU production efficiency and the production cost can be greatly reduced while the OBU customized parameter calibration is realized.
FIG. 3 is a flow chart illustrating another method 300 for parameter calibration of an on-board unit in accordance with an embodiment of the present invention. It should be noted that the method 300 can be understood as a specific interaction process of the device 102 and the on-board unit 101 in fig. 1, and further optimization and expansion of the method 200 in fig. 2. The same applies to the following, therefore, as described in detail above in connection with fig. 1 and 2.
As shown in fig. 3, at step S301, test information may be output to target on-board units located in different areas. As described above, the different regions may be obtained by dividing the foregoing parameter calibration regions according to specific application scenarios and detection requirements, and the solution of the present invention does not limit the number of the divisible regions. The test information sent to different areas may be one type of information or may be different types of information according to the detection requirement. In addition, reference may be made to the related description in fig. 2 for the parameter calibration area, which is not described herein again.
Next, at step S302, feedback information about the test information transmitted by the aforementioned target on-board unit may be acquired. In some embodiments, the target on-board unit may generate feedback information for the test information and send the feedback information to the device each time a vehicle in which the target on-board unit is installed passes through an area.
Next, at step S303, a reference parameter of the function to be calibrated corresponding to each region may be acquired. Specifically, the reference parameter may be acquired in various ways. For example, in some embodiments, a communication connection may be established with an on-board unit on the vehicle (e.g., triggering the on-board unit to initiate a bluetooth function) before the vehicle enters the parameter calibration zone. Specifically, a connection may be established with the target on-board unit based on the signal strength RSSI and the vendor identification. For example, the vehicle-mounted unit closer to the equipment can be judged through the received signal strength RSSI, and the non-target detection vehicle-mounted unit is filtered through the manufacturer identification. Then, after the connection is established through the Bluetooth, an instruction for acquiring the reference information of the front-mounted OBU can be sent to the target vehicle-mounted unit. Alternatively, in other embodiments, the reference information of each on-board unit may be prestored on the device side or may be input in real time through other external devices or manually. The aforementioned reference information may include gear information of various parameter indexes, a unique identifier (for example, MAC or SN) of the vehicle-mounted unit, upper and lower limit values of the gear, and the like. It is to be understood that the detailed description of the reference parameters herein is merely exemplary and not restrictive of the present invention.
Next, in step S304, whether the function to be calibrated corresponding to each region is qualified may be determined according to the test information and the feedback information of each region. In some embodiments, it may be determined whether the number of the test information and the number of the feedback information in any region satisfy a preset condition (where the preset condition may be specifically set according to a standard configuration of a parameter), and in response to that the preset condition is not satisfied, it may be determined that the function to be calibrated corresponding to the region is not qualified. At this time, step S305 may be continuously performed. And when the number of the test information and the number of the feedback information of the area are determined to meet the preset conditions, the parameter calibration operation in the area can be ended, and the relevant operation in the next area can be executed when the target vehicle-mounted unit appears in the next area.
Next, in step S305, a parameter calibration operation may be performed on the function to be calibrated corresponding to the reference parameter of any region. Therefore, different parameter calibration operations can be executed according to different areas, and different parameter calibration requirements of the vehicle-mounted unit are met.
FIG. 4 is a flow chart illustrating yet another method 400 for parameter calibration of an on-board unit in accordance with an embodiment of the present invention. It should be understood that the method 400 can be understood as a specific interaction process of the device 102 and the on-board unit 101 in fig. 1, and further optimization and expansion of the method 300 in fig. 3. Therefore, the same applies to the following description in connection with the details in fig. 1 and 3.
As shown in fig. 4, the foregoing parameter calibration area may be specifically divided into a first area, a second area and a third area. At step S401, the vehicle mounted with the target on-board unit may be controlled to sequentially pass through the first, second, and third areas, and to output test information to the target on-board unit located in a different area. In some embodiments, as mentioned above, the target on-board unit may be any on-board unit to be detected, or may be based on the on-board unit determined by the RSSI value and the manufacturer identification. Particularly, in the batch offline detection process, each vehicle-mounted unit to be detected can be accurately positioned through the RSSI value and the manufacturer identification.
Next, at step S402, feedback information about the test information transmitted by the target on-board unit may be acquired, and acquiring reference parameters of the function to be calibrated corresponding to each area may be performed at step S403. The specific process may refer to the related description in conjunction with step S302 and step S303 in fig. 3, and is not described herein again.
Next, in step S404, whether the function to be calibrated corresponding to each region is qualified may be determined according to the test information and the feedback information of each region. And at step S405, in response to that the function to be calibrated corresponding to any one of the areas (e.g., the first area, the second area, or the third area) is not qualified, performing parameter calibration on the first wake-up sensitivity indicator at the first area, and/or performing parameter calibration on the second wake-up sensitivity indicator, the reception sensitivity indicator, and the transmission power indicator at the second area; and/or performing a detection at the third area regarding the electronic toll collection transaction function.
Specifically, the device may continuously send test information (e.g., BST signals) to the parameter calibration area, and upon detecting that the target on-board unit is located in the first area, may detect whether a wake-up identification data packet (which may include a wake-up sensitivity service identifier and a current wake-up gear) fed back by the target on-board unit based on the test information is received. In response to receiving the wake-up identification packets and determining that the number of wake-up identification packets and the number of test signals do not satisfy a non-wake-up test condition. Specifically, it is assumed that N test signals are transmitted and N wake-up identification data packets are received, and whether the number relation of the wake-up identification data packets satisfies that N is greater than or equal to N and greater than or equal to nxk is judged, wherein k can be set according to the performances of the equipment and the vehicle-mounted unit and the like. When the relation is determined to be met, it indicates that the target on-board unit is awakened normally in the first area, and the target on-board unit does not meet the non-awakening test condition, and the current awakening gear needs to be adjusted downwards until the first awakening sensitivity index of the target on-board unit reaches the standard (for example, the target on-board unit is not awakened).
Upon detecting that the aforementioned target on-board unit is located at the second area, the calibration operation of the second wake-up sensitivity index, the calibration operation of the reception sensitivity index, and the calibration operation of the transmission power index may be performed. Specifically, it may be detected whether a wake-up identification data packet (which may include a wake-up sensitivity service identification and a current wake-up gear) fed back by the target on-board unit based on the test signal is received. In response to receiving the wake-up identification data packets and determining that the number of wake-up identification data packets and the number of test signals do not satisfy a wake-up test condition. Specifically, assuming that N test signals are transmitted and N wake-up identification data packets are received, it is determined whether the number relationship of the wake-up identification data packets satisfies N ≧ nxk (k is greater than or equal to 0 and less than or equal to 1), where k may be set according to the performance of the device and the on-board unit, and the like. When the relation is determined not to be met, it is indicated that the target on-board unit is not waken in the second area, and the target on-board unit does not meet the wakening test condition, and the current wakening gear needs to be adjusted upwards or downwards until the second wakening sensitivity index of the target on-board unit reaches the standard (for example, the target on-board unit can be waken normally).
In some embodiments, it may be detected whether a receive identification packet (which may include a receive sensitivity service identification and a current receive sensitivity notch) fed back by the target on-board unit based on the test signal is received. In response to receiving the reception identification packet and determining that the number thereof and the number of test signals do not satisfy the reception test condition. Specifically, it is assumed that N test signals are transmitted and N received identification data packets are received, and whether the number relation of the received identification data packets satisfies N ≧ nxk (0 ≦ k ≦ 1) is determined, where k may be set according to the performance of the device and the on-board unit, and the like. When the relation is determined not to be met, the receiving sensitivity gear of the target vehicle-mounted unit is not qualified, the receiving test condition is not met, and the current awakening gear needs to be adjusted upwards or downwards until the receiving index of the target vehicle-mounted unit reaches the standard (for example, the receiving sensitivity gear of the target vehicle-mounted unit reaches the receiving target value).
In some embodiments, it may be detected whether a vehicle service meter signal VST fed back by the target on-board unit based on the test signal BST is received, and in response to receiving the VST signal and determining that the number thereof and the number of test signals do not satisfy the transmit power test condition. Specifically, it is assumed that N test signals are transmitted and N VST signals are received, and whether the number relation of the VST signals satisfies N ≧ N ≧ Nxk (0 ≦ k ≦ 1) is determined, where k may be set according to the performance of the device and the on-board unit, and the like. And when the relation is determined not to be met, the transmission power gear of the target vehicle-mounted unit is unqualified, and the transmission power gear does not meet the transmission power test condition. At this time, the transmission identifier data packet (at least including the transmission power service identifier and the current transmission power gear) sent by the target on-board unit may be acquired, and then the current transmission power gear may be adjusted in a loop until the transmission power index of the target on-board unit reaches the standard (for example, the transmission power gear of the target on-board unit reaches the target value). The cyclic adjustment of the transmission power gear can avoid the problem that the equipment cannot receive the feedback signal due to the fact that the gear is too large.
It should be noted that, in the above process, the information interaction process between the target on-board unit and the device may be implemented based on the communication function supported by the on-board unit itself. For example, the target on-board unit may transmit a wakeup identification packet, receive an identification packet, and transmit an identification packet based on bluetooth communication, and may also transmit a vehicle service table signal via DSRC.
FIG. 5 is a block diagram illustrating an apparatus 500 for calibrating parameters of an on-board unit in accordance with an embodiment of the present invention. It is noted that one possible exemplary implementation vehicle for the method 200 described above in connection with fig. 2 may be the apparatus 500. Therefore, the detailed description above in connection with fig. 2 also applies below.
As shown in fig. 5, the apparatus 500 may include a roadside simulator 501, a communication host 502, and a controller 503. The roadside simulator 501 may be configured to output test information about a parameter calibration area to a target vehicle-mounted unit located in the parameter calibration area, and the communication host 502 may be configured to establish a communication connection with the target vehicle-mounted unit and acquire feedback information about the test information sent by the target vehicle-mounted unit. And the controller 503 may be connected to the roadside simulator 501 and the communication host 502, and may be configured to selectively perform a parameter calibration operation on the target on-board unit according to the test information and the feedback information. Therefore, customized calibration of the front-mounted OBU before offline or after sale of the rear-mounted OBU can be realized through the scheme of the invention, so that the vehicle-mounted unit can be more adaptive to a vehicle where the vehicle-mounted unit is located, and the performance of the vehicle-mounted unit is further improved.
Fig. 6 is a block diagram illustrating another apparatus 600 for parameter calibration of an on-board unit according to an embodiment of the present invention. It should be noted that one possible exemplary execution vehicle for the methods described above in connection with fig. 2-4 may be the apparatus 600. Additionally, the apparatus 600 may be seen as a further optimization and expansion of the apparatus 500. Therefore, the detailed description above in connection with fig. 2 to 5 also applies below.
As shown in fig. 6, the apparatus 600 may include a roadside simulator 601, a bluetooth host 602 and controller 603, a transport mechanism 604, and a detection area apparatus 605. The performance of the road side simulator 601 is calibrated to meet the actual road application standard, and may include an RSU controller 601-1 and an RSU antenna 601-2. Specifically, the RSU controller 601-1 may be connected to the controller 603, and the RSU antenna 601-2 may be disposed on the gantry and used to transmit and receive radio frequency signals (e.g., BST signals, VST signals, etc.). And the bluetooth host 602 may be connected to the on-board unit and the controller for transmitting commands and receiving command functions. The controller 603 may run service control software and databases and all control strategies may be performed by the control software. The conveying mechanism 604 can be a general conveying belt conveying mechanism, and the controller 603 can also regulate and control the speed of the conveying mechanism according to actual requirements. In addition, the detection area device 605 may be a general position detection device (for example, a locator, an infrared sensor, or the like), and the present invention is not limited to a specific installation position, and may be installed on a vehicle or in a parameter calibration area, for example. Specifically, the detection area device 605 may be used to determine which area the vehicle travels to and send the location information to the controller, so that the controller adjusts the calibration strategy through the traveling area of the vehicle.
Specifically, in practical application, when different types of vehicles equipped with the on-board units approach the non-wake-up area a1 through the transmission mechanism (here, the bluetooth functions of the OBUs on all vehicles can be simultaneously turned on, or only the OBUs to be detected can be turned on), the bluetooth function of the on-board units on the vehicles is started, and the bluetooth host searches for the target OBU through the RSSI and the manufacturer identifier and establishes bluetooth connection with the target OBU. Then, reference information such as a current wake-up gear, a receiving sensitivity gear, a transmission power gear, a unique identifier (e.g., MAC, SN) of the device, an upper limit value and a lower limit value of a radio frequency gear, and the like can be acquired from the target OBU. The controller can acquire the reference information from the Bluetooth host and store the reference information in a database to be used as a reference for subsequently adjusting the gear. The RSU antenna may be in a state of transmitting BST signals all the time during the test. When the vehicle is detected to enter the non-awakening area A1, if the OBU is detected to be awakened by the BST, the OBU sends the identification of the awakening signal to the Bluetooth host through Bluetooth, and the controller adjusts the awakening gear of the OBU downwards until the OBU is not awakened. If the OBU awakening gear is adjusted to the lower limit value and still cannot meet the requirement, the OBU can be marked to be unqualified and stored in a database. It should be noted that the interval for transmitting BST from the RSU antenna is greater than the wakeup time, frame processing time, and transmission time of the wakeup flag via bluetooth of the OBU.
And when the vehicle is detected to enter the regulation area A2, the wake-up, receive and transmit power gears are calibrated. The specific calibration process may refer to the related description in fig. 4, and is not described herein again. In addition, the disqualification index marking the OBU can also be stored in the database in the process.
Then, upon detecting that the vehicle enters the transaction area A3, a detection of the electronic toll collection transaction function (e.g., a detection simulating a real interaction process) may be performed. And completing the parameter calibration operation and the function detection operation of the OBU. It should be noted that, only 3 regions are taken as an example for description, and the specific number of regions is not limited thereto, and can be adjusted and controlled according to actual detection requirements. In addition, the device is particularly suitable for detection before the front-mounted OBU is taken off line.
FIG. 7 is a schematic block diagram illustrating a system 700 for parameter calibration of an on-board unit in accordance with an embodiment of the present invention. Not only the device 701 of the embodiment of the present invention, but also its peripheral devices and external networks are shown in fig. 7. This device 701 may be understood as one specific exemplary application of the device 102 described above in connection with fig. 1. The device 701 may implement operations such as performing parameter calibration on the target on-board unit using the test information and the feedback information to implement the solution of the present invention described above with reference to fig. 2 to 4.
As shown in fig. 7, the device 701 may include a CPU7011, which may be a general-purpose CPU, a special-purpose CPU, or other execution unit on which information processing and programs run. Further, the device 701 may further include a mass storage 7012 and a read only memory 7013, wherein the mass storage 7012 may be configured to store various data and various programs required for the device, and the ROM 7013 may be configured to store a power-on self test for the device 701, initialization of various functional modules in the system, drivers for basic input/output of the system, and data required for booting the operating system.
Further, the device 701 may also include other hardware platforms or components, such as a TPU (Tensor Processing Unit) 7014, a GPU (Graphic Processing Unit) 7015, an FPGA (Field Programmable Gate Array) 7016, and an mlu (memory Logic Unit), memory Logic Unit) 7017, as shown. It is to be understood that although various hardware platforms or components are shown in the device 701, this is by way of illustration and not of limitation, and one skilled in the art may add or remove corresponding hardware as may be desired. For example, the device 701 may include only a CPU as a well-known hardware platform and another hardware platform as a test hardware platform of the present invention.
The device 701 of the present invention also includes a communication interface 7018 such that it may be connected to a local area network/wireless local area network (LAN/WLAN)705 via the communication interface 7018, which in turn may be connected to a local server 706 via the LAN/WLAN or to the Internet ("Internet") 707. Alternatively or additionally, the inventive device 701 may also be directly connected to the internet or a cellular network based on wireless communication technology, e.g., based on third generation ("3G"), fourth generation ("4G"), or 5 th generation ("5G"), via the communication interface 7018. In some application scenarios, the device 701 of the present invention may also access the server 708 and possibly the database 709 of the external network as needed.
The peripheral devices of the apparatus 701 may include a display device 702, an input device 703, and a data transmission interface 704. In one embodiment, display 702 may include, for example, one or more speakers and/or one or more visual displays. The input device 703 may include, for example, a keyboard, a mouse, a microphone, a gesture capture camera, or other input buttons or controls configured to receive input of data or user instructions. The data transfer interface 704 may include, for example, a serial interface, a parallel interface, or a universal serial bus interface ("USB"), a small computer system interface ("SCSI"), serial ATA, FireWire ("FireWire"), PCI Express, and a high-definition multimedia interface ("HDMI"), etc., configured for data transfer and interaction with other devices or systems.
The above-mentioned CPU7011, mass storage 7012, read only memory ROM 7013, TPU 7014, GPU 7015, FPGA 7016, MLU 7017 and communication interface 7018 of the device 701 of the present invention may be interconnected by a bus 7019, and data interaction is achieved with peripheral devices through the bus. Through the bus 7019, the CPU7011 may control other hardware components and their peripherals in the device 701, in one embodiment.
In operation, the CPU7011 of the apparatus 701 of the present invention may obtain the test information and the feedback information through the input device 703 or the data transmission interface 704, and call the computer program instructions or codes stored in the memory 7012 to process the test information and the feedback information, so as to complete the parameter calibration operation on the target on-board unit.
From the above description of the modular design of the present invention, it can be seen that the system of the present invention can be flexibly arranged according to application scenarios or requirements without being limited to the architecture shown in the accompanying drawings. Further, it should also be understood that any module, unit, component, server, computer, or device performing operations of examples of the invention may include or otherwise access a computer-readable medium, such as a storage medium, computer storage medium, or data storage device (removable) and/or non-removable) such as a magnetic disk, optical disk, or magnetic tape. Computer storage media may include volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information, such as computer readable instructions, data structures, program modules or other data. In this regard, the present invention also discloses a computer readable storage medium having stored thereon computer readable instructions for parameter calibration of an on-board unit, which when executed by one or more processors, perform the method and operations previously described in connection with the figures.
While various embodiments of the present invention have been shown and described herein, it will be obvious to those skilled in the art that such embodiments are provided by way of example only. Numerous modifications, changes, and substitutions will occur to those skilled in the art without departing from the spirit and scope of the present invention. It should be understood that various alternatives to the embodiments of the invention described herein may be employed in practicing the invention. It is intended that the following claims define the scope of the invention and that the module compositions, equivalents, or alternatives falling within the scope of these claims be covered thereby.
Claims (13)
1. A method for parameter calibration of an on-board unit adapted to be mounted to different types of vehicles, the method comprising:
outputting test information about a parameter calibration area to a target vehicle-mounted unit located in the parameter calibration area;
acquiring feedback information about the test information sent by the target vehicle-mounted unit; and
and selectively executing parameter calibration operation on the target vehicle-mounted unit according to the test information and the feedback information.
2. The method of claim 1, wherein the parameter calibration zone comprises a plurality of zones, and each zone is associated with a different function to be calibrated of the target on-board unit, wherein performing the parameter calibration operation on the target on-board unit comprises:
and executing parameter calibration operation of corresponding functions to be calibrated on target vehicle-mounted units in different areas.
3. The method according to claim 2, wherein the performing parameter calibration operations for respective functions to be calibrated on target on-board units located in different areas comprises:
acquiring a reference parameter of a function to be calibrated corresponding to each region;
judging whether the function to be calibrated corresponding to each region is qualified or not according to the test information and the feedback information of each region; and
and in response to the fact that the function to be calibrated corresponding to any area is determined to be unqualified, performing parameter calibration operation on the function to be calibrated corresponding to any area according to the reference parameter of any area.
4. The method according to claim 3, wherein the feedback information at least includes current parameters of the functions to be calibrated, and wherein determining whether the functions to be calibrated corresponding to each of the regions are qualified and performing parameter calibration operation includes:
judging whether the quantity of the test information and the quantity of the feedback information of any region meet preset conditions or not;
in response to the condition that the preset condition is not met, determining that the function to be calibrated corresponding to any area is unqualified; and
and adjusting the current parameter according to the reference parameter of the function to be calibrated corresponding to any region so as to finish calibrating the parameter of the function to be calibrated corresponding to any region.
5. The method of any one of claims 2 to 4, wherein the plurality of regions comprises a first region, a second region, and a third region, the method comprising:
performing parameter calibration with respect to a first wake-up sensitivity index at the first region;
performing parameter calibration at the second region with respect to a second wake-up sensitivity index, a receive sensitivity index, and a transmit power index; and/or
Detecting a toll-free transaction function is performed at the third area.
6. The method of claim 5, further comprising:
and controlling the vehicle provided with the target vehicle-mounted unit to sequentially pass through the first area, the second area and the third area so as to execute corresponding parameter calibration operation and/or detection operation.
7. The method of claim 6, wherein the test information comprises a test signal sent by an analog rsu, and performing the corresponding parameter calibration operation comprises:
in response to detecting that the target on-board unit is located at the first zone, performing the following parameter calibration operations at the first zone:
sending a test signal to the target on-board unit;
detecting whether a wake-up identification data packet fed back by the target vehicle-mounted unit based on the test signal is received, wherein the wake-up identification data packet at least comprises a wake-up sensitivity service identification and a current wake-up gear, and responding to the fact that the wake-up identification data packet is received and the number of the wake-up identification data packets and the number of the test signals are determined not to meet a non-wake-up test condition, and adjusting the current wake-up gear downwards until a first wake-up sensitivity index of the target vehicle-mounted unit reaches the standard; and
in response to detecting that the target on-board unit is located at the second zone, performing the following parameter calibration operations at the second zone:
sending a test signal to the target on-board unit;
detecting whether a wake-up identification data packet fed back by the target vehicle-mounted unit based on the test signal is received, wherein the wake-up identification data packet at least comprises a wake-up sensitivity service identification and a current wake-up gear, and responding to the fact that the wake-up identification data packet is received and the number of the wake-up identification data packets and the number of the test signals are determined not to meet a wake-up test condition, and adjusting the current wake-up gear upwards or downwards until a second wake-up sensitivity index of the target vehicle-mounted unit reaches the standard;
detecting whether a receiving identification data packet fed back by the target vehicle-mounted unit based on the test signal is received, wherein the receiving identification data packet at least comprises a receiving sensitivity service identification and a current receiving sensitivity gear, and responding to the receiving identification data packet and determining that the number of the receiving identification data packets and the number of the test signals do not meet receiving test conditions, adjusting the current receiving sensitivity gear upwards or downwards until a receiving sensitivity index of the target vehicle-mounted unit meets the standard; and
detecting whether a vehicle service table signal fed back by the target vehicle-mounted unit based on the test signal is received or not, responding to the received vehicle service table signal and determining that the number of the vehicle service table signal and the number of the test signal do not meet a transmission power test condition, acquiring a transmission identification data packet sent by the target vehicle-mounted unit, wherein the transmission identification data packet at least comprises a transmission power service identification and a current transmission power gear, and circularly adjusting the current transmission power gear until the transmission power index of the target vehicle-mounted unit reaches the standard.
8. The method of claim 7, wherein obtaining feedback information about the test information sent by the target on-board unit comprises:
acquiring a wakeup identification data packet, a receiving identification data packet and a transmitting identification data packet which are sent by the target vehicle-mounted unit based on a Bluetooth communication mode; and
and acquiring a vehicle service table signal transmitted by the target vehicle-mounted unit based on a dedicated short-range communication mode DSRC.
9. An apparatus, comprising:
a processor; and
memory storing computer instructions for parameter calibration of an on-board unit, which, when executed by the processor, cause the apparatus to perform the method according to any of claims 1-8.
10. A computer-readable storage medium containing program instructions for parameter calibration of an on-board unit, which when executed by a processor, cause the method according to any one of claims 1-8 to be carried out.
11. An apparatus for parameter calibration of an on-board unit adapted to be mounted to different types of vehicles, the apparatus comprising:
a roadside simulator configured to output test information on a parameter calibration area to a target on-board unit located in the parameter calibration area;
the communication host is configured to establish communication connection with the target vehicle-mounted unit and acquire feedback information about the test information sent by the target vehicle-mounted unit;
and the controller is connected with the road side simulator and the communication host and is configured to selectively execute parameter calibration operation on the target vehicle-mounted unit according to the test information and the feedback information.
12. The apparatus of claim 11, wherein the apparatus further comprises:
a conveying mechanism configured to carry a vehicle on which an on-board unit is mounted and convey the vehicle to the parameter calibration area; and
the controller is connected with the conveying mechanism and is also configured to regulate and control the conveying speed of the conveying mechanism.
13. A system for calibrating on-board unit parameters, comprising:
at least one on-board unit installed on one type of vehicle and supporting a toll collection function; and
an apparatus or device according to claim 9, 11 or 12, wherein the apparatus or device is configured to perform a parameter calibration operation for a non-stop toll collection function of the on-board unit for a vehicle entering a parameter calibration zone.
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| CN202111572272.5A CN114363860B (en) | 2021-12-21 | Method and device for parameter calibration of vehicle-mounted unit and related products thereof |
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| CN202111572272.5A CN114363860B (en) | 2021-12-21 | Method and device for parameter calibration of vehicle-mounted unit and related products thereof |
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