CN114339687A - Method for operating a vehicle-mounted T-BOX device and vehicle-mounted T-BOX device - Google Patents
Method for operating a vehicle-mounted T-BOX device and vehicle-mounted T-BOX device Download PDFInfo
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- CN114339687A CN114339687A CN202210001433.3A CN202210001433A CN114339687A CN 114339687 A CN114339687 A CN 114339687A CN 202210001433 A CN202210001433 A CN 202210001433A CN 114339687 A CN114339687 A CN 114339687A
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Abstract
The invention discloses a method for operating a vehicle-mounted T-BOX device and the vehicle-mounted T-BOX device, wherein the vehicle-mounted T-BOX device can respectively obtain navigation data from a navigation data source through at least one satellite positioning signal link and at least one communication link; wherein priorities are pre-set for at least one satellite positioning signal link and at least one other communication link, wherein the method comprises the steps of: s1, evaluating the signal transmission quality of each link; s2: comparing the signal transmission quality with corresponding threshold values respectively; s3, determining the links with the signal transmission quality not lower than the corresponding threshold value as usable links; the link with the highest priority is selected from the link group consisting of all the available links and switched to the current primary link S4. By monitoring and evaluating different navigation data source signals and switching in time, the vehicle-mounted T-BOX equipment is ensured to always adopt the optimal data source signal and correspondingly inform or warn a user.
Description
Technical Field
The invention relates to the technical field of vehicle networking, in particular to a method for operating vehicle-mounted T-BOX equipment and the vehicle-mounted T-BOX equipment.
Background
The T-Box (telematics box), also known as a vehicle-mounted intelligent terminal, is a core control device for vehicle networking, and is mainly used for collecting vehicle-related information including position information, attitude information, vehicle state information and the like, and then transmitting the information to a remote service platform through wireless communication. Meanwhile, a user can use a mobile phone APP and a Web client to issue an instruction to the T-BOX terminal through the remote service platform to control and operate the vehicle.
Currently, vehicles mostly acquire navigation information from a global satellite positioning system through a T-Box device. Several methods are known in the prior art to optimize the positioning of T-Box devices. For example, chinese patent application CN113805210A discloses a TBOX positioning optimization system and method, wherein the positioning accuracy of TBOX can be significantly improved by filtering and optimizing the received GPS/beidou positioning data. But there is no consideration of how to deal with the problem with raw positioning data.
However, due to the environment of the vehicle (such as large buildings, tunnels, caves, etc.) and other influences (such as regional policy and regulations, system faults, etc.), the positioning signal of the global positioning system as the navigation data source has uncertain factors, and in an extreme case, the signal cannot be received from a certain navigation data source at all. Thus, and to some extent, limiting the reliability of navigation.
Accordingly, it is desirable to provide a method for operating a vehicle-mounted T-BOX apparatus and a vehicle-mounted T-BOX apparatus, which can overcome the above-mentioned technical problems in the prior art.
Disclosure of Invention
The invention provides a method for operating a vehicle-mounted T-BOX device and the vehicle-mounted T-BOX device, which aim to solve one or more technical problems in the prior art. The method for operating the vehicle-mounted T-BOX device and the vehicle-mounted T-BOX device ensure that the vehicle-mounted T-BOX device always adopts the best data source signal and correspondingly informs or warns a user by monitoring and evaluating different navigation data source signals and switching in time.
One aspect of the invention relates to a method for operating a vehicle-mounted T-BOX device, which is capable of acquiring navigation data from a navigation data source via at least one satellite positioning signal link and at least one communication link, respectively; wherein priorities are pre-set for at least one satellite positioning signal link and at least one other communication link, the method comprising the steps of:
s1, evaluating the signal transmission quality of each link;
s2: comparing the signal transmission quality with corresponding threshold values respectively;
s3, determining the links with the signal transmission quality not lower than the corresponding threshold value as usable links;
the link with the highest priority is selected from the link group consisting of all the available links and switched to the current primary link S4.
That is, the onboard T-BOX device is capable of establishing communication connections with a plurality of navigation data sources, in particular a plurality of satellite navigation systems, such as the american GPS system, galileo system, glonass system or beidou system, etc. In addition, the vehicle-mounted T-BOX device can be connected with a mobile intelligent terminal or a base station and other communication infrastructures in a mode of Wifi, Bluetooth, a mobile communication network, RFID, ZigBee and the like, and navigation data can be obtained from the devices. Therefore, a plurality of alternative navigation data sources are provided for the vehicle-mounted T-BOX device, and which navigation data source is optimal under the current condition can be judged through monitoring and evaluation. In this case, the navigation data source is selected primarily by means of the signal transmission quality and a predetermined priority. Thereby ensuring that the vehicle always obtains the currently best navigation data signal.
Preferably, the priority of the at least one satellite positioning signal link and the at least one communication link is regulated based on the signal quality of the region in which it is located and local policy. Prioritizing the links may also be understood as prioritizing the navigation data sources or the systems or devices providing the navigation data sources. For example, in china, the priority of the beidou system is set to be the highest, and the glonass system or the american GPS system is set to be the second priority. In the united states, the priority of the united states GPS system is set to the highest. The setting of the priority may be done in advance by the vehicle user or set uniformly by the vehicle manufacturer before delivery of the vehicle.
Preferably, the relevant information or warning is sent to the user terminal after the transmission quality evaluation is completed or after the link handover is completed. Therefore, when a signal of a certain navigation data source is unstable or is switched to a navigation data source with lower priority, the driver is reminded that the current navigation information has lower priority or lower data quality, for example, more drivers are required to pay more attention to road signs, signs and the like in the surrounding environment.
According to an advantageous aspect of the invention, the satellite positioning signal link is prioritized over the other communication links.
It is advantageously provided that the method steps S1 to S4 are executed cyclically at predetermined intervals and/or that the method steps S1 to S4 are executed when the signal transmission quality of the current main link is below a predetermined threshold value. For example, it can be provided that the signals of the individual navigation data sources are evaluated every 5 minutes, 10 minutes or 30 minutes and the best navigation data source is selected accordingly. It is also conceivable to continuously monitor the signal quality of the current main link, i.e. of the current navigation data source, and to perform a reevaluation and a handover if the signal transmission quality of the current main link is abnormal, for example below a defined threshold value. It is also contemplated to combine the two approaches. Therefore, even if the current main link signal transmission is normal, when a better navigation data source is available, the better navigation data source can be switched to in time.
In particular, it is preferable that the main GPS signal is set to a first priority, the sub GPS signal is set to a second priority, the WiFi navigation data is set to a third priority, and the bluetooth navigation data is set to a fourth priority.
Preferably, the link with the highest priority is used as the initial default main link. That is, at device start-up, the highest priority navigation data source is preferably employed.
In an advantageous embodiment of the invention, the satellite positioning signal link is used to establish a signal connection with the GPS system, galileo system, glonass system or beidou system, and the other communication link is one of a WiFi network link, a bluetooth communication link, a mobile communication link.
Another aspect of the invention also relates to a T-BOX device on board a vehicle having a processor unit, a communication unit for receiving navigation data from a navigation data source and a satellite positioning unit, wherein the satellite positioning unit comprises at least one satellite positioning signal module for establishing a satellite positioning signal link with at least one global satellite positioning system, the communication unit comprises at least one communication module for establishing a communication connection with a communication device external to the vehicle, wherein the T-BOX device on board a vehicle further comprises a navigation data management module designed for evaluating navigation data received by the at least one satellite positioning signal module and the at least one communication module and for switching the navigation data source depending on the evaluation result.
Preferably, the vehicle-mounted T-BOX device further comprises an SMS transceiving module, and the SMS transceiving module is configured to send related information or a warning to the user terminal after the navigation data management module completes the detection or switching of the navigation data source.
The variants described for the method for operating a vehicle-mounted T-BOX system and the advantageous technical effects thereof are also applicable to a corresponding vehicle-mounted T-BOX system. Here, the description is omitted.
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Further characteristics and advantages of the invention are given by the following description of a preferred embodiment with the aid of the drawings.
The figures show:
FIG. 1 shows a flow diagram of an embodiment of the method according to the invention;
fig. 2 shows an architecture diagram of functional modules related to the present invention of the on-board T-BOX apparatus according to the present invention;
fig. 3 shows a schematic diagram of the switching operation of the on-board T-BOX device according to the present invention in different modes.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It is obvious that the described embodiments are only a part of the possible embodiments of the invention, but the invention is not limited thereto. In the various figures, identical or functionally identical components are provided with the same reference symbols.
Fig. 1 shows a flow chart of a method for operating a vehicle-mounted T-BOX device. The vehicle-mounted T-BOX device is capable of acquiring navigation data from a plurality of navigation data sources via at least one satellite positioning signal link and at least one communication link, respectively; i.e. to establish connections with a plurality of satellite navigation systems and a plurality of other navigation data sources. The satellite navigation system may be one or more of the U.S. GPS system, galileo system, glonass system and beidou system. Other data sources can be mobile intelligent terminals or network servers, base stations and other communication infrastructures, and the like. In the vehicle-mounted T-BOX device, a priority is set in advance for each link. For example, the american GPS system as the primary GPS signal is set to a first priority, the beidou system as the secondary GPS signal is set to a second priority, the WiFi navigation data is set to a third priority and the bluetooth navigation data is set to a fourth priority. In all normal situations, the highest priority navigation data source, i.e., the primary GPS signal, is employed using the highest priority link. If there is a problem with the primary GPS signal, for example due to interference or malfunction, then switching to other lower priority navigation data sources is considered. Here, the handover is achieved by:
s1, evaluating the signal transmission quality of each link;
s2: comparing the signal transmission quality with corresponding threshold values respectively;
s3, determining the links with the signal transmission quality not lower than the corresponding threshold value as usable links;
the link with the highest priority is selected from the link group consisting of all the available links and switched to the current primary link S4.
The evaluation of the quality of the signal transmission takes into account parameters such as error rate, signal distortion rate, transmission rate and delay. Specifically, the parameters may be evaluated in combination to obtain a combined evaluation value, and the signal transmission quality may be considered to be acceptable if the combined evaluation value is not lower than a predetermined threshold. The threshold value may be selected empirically or may be determined experimentally. The priority of the at least one satellite positioning signal link and the at least one communication link may be pre-defined based on current signal quality and local policy. For example, the beidou system may be set to have the highest priority in china. The priority may be set individually by the vehicle user or may be set uniformly by the vehicle manufacturer before delivery of the vehicle. In addition, the method steps S1-S4 may be performed cyclically at predetermined intervals and/or the method steps S1-S4 may be performed when the signal transmission quality of the current primary link is below a predetermined threshold. Therefore, whether the currently adopted navigation data source is optimal or not can be continuously monitored, and if a better navigation data source exists, the better navigation data source can be timely found and switched. In this case, a value below a predetermined threshold is understood to mean that the navigation signal does not satisfy the navigation requirements in terms of integrity, correctness, and aging, or even fails to receive the signal at all.
Fig. 2 shows an architecture diagram of functional modules related to the present invention of the on-board T-BOX apparatus according to the present invention. It is clear that the onboard T-BOX apparatus also includes other possible functional modules, such as a processor module, but for clarity reasons are not described in detail herein, as they are not the focus of the present invention. As shown in fig. 2, the vehicle-mounted T-BOX device includes a navigation data management module 1 that is capable of signal connection with each communication module in the communication unit 7. The communication unit 7 may include, for example, a GPS signal module 3, a WiFi data module 4, and a bluetooth communication module 5. Obviously, the communication unit 7 may also comprise more communication modules, such as different kinds of GPS signal modules, mobile communication network modules, etc. The respective modules in the communication unit 7 are able to obtain navigation data from the respective navigation data sources 6. The navigation data management module 1 receives navigation data from the individual modules of the communication unit 7 and evaluates them analytically by means of any of the embodiments of the method according to the invention and switches to the best navigation data source on the basis of the evaluation result. The navigation data management module 1 can be implemented in the form of a software module running on a processor unit not shown in detail. After the evaluation and the switching, the navigation data management module 1 can also send an alarm signal to the SMS transceiving module 2 based on the corresponding evaluation and switching results, and send related information or an alarm to each user terminal by the SMS transceiving module 2. The user terminal can be a mobile phone of a user, a vehicle-mounted infotainment system and the like.
Fig. 3 shows a schematic diagram of the switching operation of the onboard T-BOX device in different modes. The working principle of the alarm can be clearly seen from fig. 3. Here, the priority of the primary GPS is set to be highest, the secondary GPS is set to be second, the WiFi signal is set to be third, and the bluetooth signal is set to be fourth. In the first scenario, the navigation data management module 1 evaluates that the quality of the main GPS signal is good, and then the main GPS mode is entered, that is, the main GPS signal is adopted, and meanwhile, the information "main GPS mode, high quality of navigation data" is sent to the SMS transceiving module 2. The SMS transceiving module 2 pushes to the user terminal after receiving the information.
In scenario two, the navigation data management module 1 evaluates that the quality of the main GPS signal is not satisfactory or that the signal cannot be received at all. This is for example due to interference, shielding or system failure. Meanwhile, the navigation data management module 1 evaluates and finds that the auxiliary GPS signal is better, so that the vehicle-mounted T-BOX equipment is switched to an auxiliary GPS mode, and information of 'auxiliary GPS mode, high navigation data quality' is pushed to the user terminal through the SMS transceiving module 2.
In scenario three, the navigation data management module 1 evaluates that the WiFi data link has the highest priority among the links whose signal quality meets the requirement. The WiFi module is switched to and the information of "WiFi mode, navigation data quality" is pushed to the user terminal through the SMS transceiving module 2.
In the fourth scenario, after the navigation data management module 1 evaluates, it is found that only the bluetooth data link with the lowest priority meets the requirement. Then the vehicle-mounted T-BOX equipment is switched to the Bluetooth module at the moment, and the information of 'Bluetooth mode, navigation data quality low' is pushed to the user terminal through the SMS transceiving module 2. The current navigation information for alerting drivers is of lower priority or data quality, such as requiring more drivers to pay more attention to road signs, etc. in the surrounding environment.
In general, the invention comprehensively evaluates the signal quality and priority of all available navigation data sources through the method and the equipment in a brand-new scheme to obtain the currently available optimal navigation data source, and can switch the vehicle-mounted T-BOX equipment to use the currently optimal navigation data source according to the evaluation result. Meanwhile, corresponding prompt and alarm information can be pushed to the user terminal, so that the user can know the current running state of the vehicle-mounted T-BOX device and take corresponding counter measures in advance, and the driving safety is improved.
It is to be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the design of the present invention, but the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A method for operating an onboard T-BOX device capable of acquiring navigation data from a navigation data source via at least one satellite positioning signal link and at least one communication link, respectively; wherein at least one satellite positioning signal link and at least one other communication link are pre-prioritized, the method comprising the steps of:
s1, evaluating the signal transmission quality of each link;
s2: comparing the signal transmission quality with corresponding threshold values respectively;
s3, determining the links with the signal transmission quality not lower than the corresponding threshold value as usable links;
the link with the highest priority is selected from the link group consisting of all the available links and switched to the current primary link S4.
2. The method of claim 1, wherein the priority of the at least one satellite positioning signal link and the at least one communication link is defined based on signal quality of the geographic area and local policy.
3. Method according to claim 1 or 2, characterized in that the relevant information or warning is sent to the user terminal after the transmission quality evaluation is completed or after the link handover is completed.
4. A method according to claim 1 or 2, characterized in that the satellite positioning signal link is prioritized over the other communication links.
5. Method according to claim 1 or 2, characterized in that the method steps S1-S4 are performed cyclically at predetermined intervals and/or the method steps S1-S4 are performed when the signal transmission quality of the current primary link is below a predetermined threshold.
6. The method of claim 4, wherein the primary GPS signal is set to a first priority, the secondary GPS signal is set to a second priority, the WiFi navigation data is set to a third priority, and the Bluetooth navigation data is set to a fourth priority.
7. The method of claim 4, wherein the link with the highest priority is used as the initial default primary link.
8. The method of claim 1, wherein the satellite positioning signal link is used to establish a signal connection with the U.S. GPS system, galileo system, glonass system or beidou system, and the other communication link is one of a WiFi network link, a bluetooth communication link, a mobile communication link.
9. An on-board T-BOX device with a processor unit, a communication unit for receiving navigation data from a navigation data source and a satellite positioning unit, wherein the satellite positioning unit comprises at least one satellite positioning signal module for establishing a satellite positioning signal link with at least one global satellite positioning system, and the communication unit comprises at least one communication module for establishing a communication connection with a communication device external to the vehicle, characterized in that the on-board T-BOX device further comprises a navigation data management module which is designed for evaluating the navigation data received by the at least one satellite positioning signal module and the at least one communication module and for switching the navigation data source depending on the evaluation result.
10. The vehicle-mounted T-BOX device as claimed in claim 9, further comprising an SMS transceiving module for transmitting related information or warning to the user terminal after the navigation data management module completes the detection or switching of the navigation data source.
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| CN202210001433.3A CN114339687A (en) | 2022-01-04 | 2022-01-04 | Method for operating a vehicle-mounted T-BOX device and vehicle-mounted T-BOX device |
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| CN202210001433.3A CN114339687A (en) | 2022-01-04 | 2022-01-04 | Method for operating a vehicle-mounted T-BOX device and vehicle-mounted T-BOX device |
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| CN206945986U (en) * | 2017-05-15 | 2018-01-30 | 北京智汇空间科技有限公司 | Indoor and outdoor integration location receiver and car-mounted terminal |
| CN108737782A (en) * | 2018-05-11 | 2018-11-02 | 安徽尼古拉电子科技有限公司 | A kind of low latitude monitoring device based on Beidou navigation technology |
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- 2022-01-04 CN CN202210001433.3A patent/CN114339687A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090076727A1 (en) * | 2007-03-09 | 2009-03-19 | Lien Te Ti | Integrated positioning apparatus and implementation method thereof |
| CN204557199U (en) * | 2015-04-22 | 2015-08-12 | 中国民用航空总局第二研究所 | A kind of surface-monitoring equipment and system |
| CN104865939A (en) * | 2015-04-22 | 2015-08-26 | 中国民用航空总局第二研究所 | Ground monitoring device, method and system |
| CN206945986U (en) * | 2017-05-15 | 2018-01-30 | 北京智汇空间科技有限公司 | Indoor and outdoor integration location receiver and car-mounted terminal |
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