Vehicle antenna device and vehicle-mounted equipment
By combining GNSS antenna modules, array antenna modules, and phase shifters, and using AP modules to adjust the beam angle, the problem of vehicle positioning accuracy being affected by environmental factors was solved, achieving more stable satellite search quality and positioning accuracy.
Patent Information
- Application Number
- CN202422611908.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-10-28
AI Technical Summary
Vehicle positioning accuracy is unstable due to environmental factors, leading to decreased satellite acquisition quality and increased positioning time.
A combination of GNSS antenna module, array antenna module, AP module and phase shifter is used. The AP module obtains satellite search quality information and generates control signals. The phase shifter is adjusted to change the beam angle of the array antenna module, thereby improving satellite search quality.
It effectively solves the problem of unstable vehicle positioning caused by environmental factors, and improves satellite search quality and positioning accuracy.
Smart Images
Figure CN223527404U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to vehicle positioning technical field especially relates to a vehicle antenna device and vehicle equipment. BACKGROUND
[0002] In the related art, a vehicle is equipped with a GNSS antenna to improve the accuracy of the vehicle's own positioning. The GNSS antenna is generally a ceramic directional antenna, and its maximum radiation direction is perpendicular to the reflection surface and coincides with the Z-axis. In other words, when the GNSS antenna is parallel to the ground, the maximum radiation direction points to the zenith, and the best satellite search quality can be obtained. However, the environment faced by the vehicle is uncertain, which makes the satellite search quality of the antenna not necessarily in the best state, resulting in a decrease in positioning accuracy and an increase in positioning time. SUMMARY
[0003] The technical problem to be solved by the utility model is to provide a vehicle antenna device and vehicle equipment.
[0004] The technical scheme adopted by the utility model to solve its technical problem is: a vehicle antenna device is constructed, which comprises a GNSS antenna module for receiving signals and processing the received signals, and an array antenna module connected with the GNSS antenna module;
[0005] The vehicle antenna device further comprises an AP module and a phase shifter.
[0006] The AP module is connected with the GNSS antenna module to obtain current satellite search quality information from the GNSS antenna module, and the AP module is connected with the phase shifter to generate and output a control signal to the phase shifter according to the current satellite search quality information.
[0007] The phase shifter is connected with the GNSS antenna module to adjust the beam angle of the array antenna module according to the control signal.
[0008] In some embodiments, the array antenna module comprises a plurality of antenna units.
[0009] The vehicle antenna device further comprises a power division network module, and the radio frequency port of the GNSS antenna module is connected with the plurality of antenna units through the power division network module.
[0010] In some embodiments, the vehicle antenna device comprises a plurality of phase shifters; the AP module is connected with the plurality of phase shifters to output a control signal to at least one of the phase shifters according to the current satellite search quality information; each phase shifter in the plurality of phase shifters is connected with one antenna unit paired therewith to independently adjust the feeding phase of the antenna unit.
[0011] In some embodiments, the plurality of phase shifters are respectively electrically connected with the GNSS antenna module, so as to be powered by the GNSS antenna module.
[0012] In some embodiments, the AP module comprises a collection unit, a judgment unit and an execution unit.
[0013] The collection unit is connected with the GNSS antenna module to obtain the current search star quality information from the GNSS antenna module; the judgment unit is connected with the collection unit to judge whether the current search star quality meets the standard according to the current search star quality information; the execution unit is connected with the judgment unit to generate the control signal when the judgment unit outputs a signal indicating that the search star quality does not meet the standard, and the execution unit is connected with the plurality of phase shifters to transmit the control signal to the corresponding phase shifters.
[0014] In some embodiments, the collection unit is configured to collect at least one of the search star value, the CN value and the HDOP value of the GNSS antenna module.
[0015] In some embodiments, the execution unit is provided with a memory, and the memory stores a mapping table information, which comprises a mapping relationship between the phase shift amount of one or more phase shifters and the angle offset of the array antenna module.
[0016] In some embodiments, the AP module is one of the AP modules of model MT2735, IMX8Q, SA515 or SA525.
[0017] The utility model further constructs a kind of vehicle-mounted equipment, including the power supply device for providing electric energy, further include the antenna device for vehicle described above, the power supply device is powered for the antenna device for vehicle.
[0018] The utility model has the following beneficial effects: the utility model adjusts the value of the beam angle of array antenna module by AP module, realizes the adjustment of the beam angle of array antenna module by phase shifter, thereby changes the orientation of the maximum radiation direction of array antenna module, to effectively solve the problem that vehicle positioning effect is unstable due to environmental factors. BRIEF DESCRIPTION OF DRAWINGS
[0019] The utility model will be further described below by combining with drawings and embodiment, and drawings are as follows:
[0020] Figure 1 It is the structure schematic diagram of antenna device for vehicle in some embodiments of the utility model.
[0021] Reference signs:
[0022] GNSS antenna module 1; array antenna module 2; antenna unit 21; AP module 3; phase shifter 4; power division network module 5. DETAILED DESCRIPTION
[0023] In order to have a clearer understanding of the technical features, objectives and effects of the present application, the specific embodiments of the present application will be described in detail with reference to the drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail" and the like are based on the directions or positional relationships shown in the drawings, constructed and operated in a particular direction, and are only for the convenience of describing the present technical solution, and do not indicate that the devices or elements referred to must have a particular direction, therefore, it cannot be understood as a limitation on the present application.
[0024] It should also be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing", "setting" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. When an element is referred to as "on" or "below" another element, the element can be "directly" or "indirectly" located on the other element, or there can be one or more intervening elements. The terms "first", "second", "third" and the like are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features, therefore, the features with "first", "second", "third" and the like can be explicitly or implicitly included one or more of the features. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0025] In the following description, specific details are presented to illustrate, rather than limit, the embodiments of the present application, such as specific system structures, technologies, etc., so that the present application can be thoroughly understood. However, it should be clear to those skilled in the art that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed description of well-known systems, devices, circuits and methods is omitted to avoid unnecessary details that hinder the description of the present application.
[0026] In some embodiments, reference can be made to Figure 1The vehicle antenna device can include a GNSS antenna module 1, an array antenna module 2, an AP module 3, and a phase shifter 4. The GNSS antenna module 1 is configured to receive signals and process the received signals. The GNSS antenna module 1 is provided with a radio frequency port connected to the array antenna module 2 to realize signal transmission. The AP module 3 is connected to the GNSS antenna module 1 to obtain current satellite search quality information from the GNSS antenna module 1. The AP module 3 is connected to the phase shifter 4 to generate and output a control signal to the phase shifter 4 according to the current satellite search quality information. The phase shifter 4 is connected to the GNSS antenna module 1. The phase shifter 4 receiving the control signal can adjust the beam angle of the array antenna module 2 according to the control signal, thereby adjusting the satellite search quality.
[0027] It can be understood that the antenna of the GNSS system is usually a directional antenna. According to the principle of the directional antenna, by adjusting the beam angle of the array antenna module 2, the offset of the antenna beam can be realized, that is, the orientation of the maximum radiation direction is changed, so that the array antenna module 2 always points to the zenith direction in different antenna positions. The adjustment of the beam angle of the array antenna module 2 is realized by the phase shifter 4, and the value to be adjusted is given by the data fed back by the GNSS antenna module 1 through the AP module 3. Secondly, since the generation and transmission of the control signal are completed by the AP module 3, the GNSS antenna module 1 is not involved, so the vehicle antenna device of the utility model can select GNSS antenna modules 1 of different equipment manufacturers, without being limited to using a specific GNSS antenna module 1, thereby improving the adaptability of the parts of the vehicle antenna device and improving the convenience of equipment manufacturers' research and development.
[0028] Therefore, the utility model can solve the problem of unstable vehicle positioning effect caused by environmental factors. For example, when the antenna unit 21 is not parallel to the ground when the vehicle goes uphill or downhill, or the surrounding buildings or other obstacles block the signal, the satellite search quality is poor. At this time, the AP module 3 generates a control signal and sends it to the phase shifter 4 to adjust the beam angle of the array antenna module 2, thereby improving the satellite search quality.
[0029] Optionally, as shown in Figure 1 The array antenna module 2 includes a plurality of antenna units 21. The vehicle antenna device further includes a power division network module 5, and the radio frequency port of the GNSS antenna module 1 is connected to the plurality of antenna units 21 through the power division network module 5 to distribute the signals to each antenna unit 21.
[0030] The phase shifter 4 can also be provided in multiple numbers, which can be the same as the number of the antenna units 21, or less than the number of the antenna units 21, which is not limited here, and the number can be adjusted according to factors such as manufacturing cost and antenna radiation range. The AP module 3 is connected with each phase shifter 4 to generate and output a control signal to at least one phase shifter 4 according to the current satellite search quality information. Each phase shifter 4 is paired with a corresponding antenna unit 21, and a single phase shifter 4 and a single antenna unit 21 corresponding thereto are connected. It can be explained here that the purpose of the present application is to adjust the beam angle of the entire array antenna module 2, and it is not necessary to provide a phase shifter 4 on each antenna unit 21. As long as there is at least one phase shifter 4 to shift the phase of the antenna unit 2 paired therewith, the beam angle of the entire array antenna module 2 can be changed. The phase shifter 4 receiving the control signal can adjust the feeding phase of the corresponding antenna unit 21 according to the control signal, thereby adjusting the satellite search quality.
[0031] It can be understood that when the satellite search quality deteriorates, the AP module 3 generates a control signal and sends it to one or a part or all of the phase shifters 4, adjusts the feeding phase of one or more antenna units 21 in the array antenna module 2, so as to adjust the beam angle of the array antenna module 2.
[0032] Optionally, the phase shifter 4 is electrically connected with the GNSS antenna module 1 to be powered by the GNSS antenna module 1.
[0033] In some embodiments, the AP module can be one of the AP modules of model MT2735, IMX8Q, SA515 or SA525.
[0034] In some embodiments, the AP module 3 can include a collection unit, a judgment unit and an execution unit (not shown).
[0035] The collection unit is connected with the GNSS antenna module 1 to continuously obtain the current satellite search quality information from the GNSS antenna module 1, so as to ensure that the phase adjustment is performed at the first time when the satellite search quality does not meet the requirements; of course, the collection unit can also periodically obtain the current satellite search quality information from the GNSS antenna module 1, which is not limited here.
[0036] The judgment unit is connected with the acquisition unit, and is configured to judge whether the current satellite searching quality meets the standard according to the current satellite searching quality information; optionally, the current satellite searching quality information can include at least one of the current satellite searching value, a CN (Carrier-to-Noise Ratio) value and an HDOP (Horizontal Dilution of Precision) value. Taking the case that the satellite searching quality information includes the satellite searching value and the CN value as an example, in some embodiments, when the current satellite searching value is less than a first preset value, and the CN value is less than a second preset value, it is judged that the satellite searching quality does not meet the standard.
[0037] The execution unit is provided with a memory, which stores a mapping table information including a mapping relationship between the phase offset of the one or more phase shifters 4 and the angle offset of the array antenna module 2. For example, the mapping relationship can be determined by recording how many degrees the one or more phase shifters 4 control the phase offset and how many degrees the directional angle of the array antenna module 2 will be offset.
[0038] Meanwhile, the execution unit is connected with the judgment unit, and when the judgment unit outputs the signal that the satellite searching quality does not meet the standard, the execution unit generates a control signal according to the mapping table information. In addition, the execution unit is also connected with each phase shifter 4 to transmit the control signal to the corresponding phase shifter 4. For example, when the judgment unit outputs the signal that the satellite searching quality does not meet the standard, the execution unit can adjust the phase offset from small to large according to the mapping table information until the satellite searching quality meets the standard; wherein each time the phase offset is adjusted, one or more phase shifters 4 can be controlled to perform phase offset.
[0039] In summary, when put into application, if each phase shifter 4 is in the initial state, the phase of the corresponding antenna unit 21 is not deflected, and the beam angle of the array antenna module 2 points to the zenith direction. At the same time, the acquisition unit continuously reads the current satellite searching value and the CN value from the GNSS antenna module 1, and when the judgment unit judges that the satellite searching quality does not meet the standard, the execution unit outputs serial or parallel data (i.e. the control signal) to adjust one or more phase shifters 4 until the satellite searching quality meets the preset requirement. That is, each time the satellite searching quality is lower than the preset threshold, the AP module 3 will adjust one or more phase shifters 4 according to the data obtained from the GNSS antenna module 1 to dynamically maintain a higher satellite searching quality.
[0040] In addition, the utility model discloses a kind of vehicle-mounted equipment, which can include the antenna device for vehicle described above, and power supply device for the antenna device for vehicle.
[0041] It can be understood that the above embodiment only expresses the preferred embodiment of the utility model, the description is more specific and detailed, but it can not be understood as the limitation of the utility model patent scope; it should be pointed out that for ordinary skilled person in the art, the above technical features can be freely combined without departing from the concept of the utility model, and a number of deformations and improvements can be made, which belong to the protection scope of the utility model; therefore, any equivalent transformation and modification within the scope of the utility model patent claim should belong to the scope of the utility model patent claim.
Claims
1. An antenna device for a vehicle, characterized by comprising: The application relates to a vehicle antenna device, comprising a GNSS antenna module (1) for receiving signals and processing the received signals, and an array antenna module (2) connected with the GNSS antenna module (1); The vehicle antenna device further comprises an AP module (3) and a phase shifter (4); The AP module (3) is connected with the GNSS antenna module (1) to obtain current satellite searching quality information from the GNSS antenna module (1), and the AP module (3) is connected with the phase shifter (4) to generate and output a control signal to the phase shifter (4) according to the current satellite searching quality information. The phase shifter (4) is connected with the GNSS antenna module (1) to adjust the beam angle of the array antenna module (2) according to the control signal.
2. The antenna device for vehicle according to claim 1, characterized by The array antenna module (2) comprises a plurality of antenna units (21). The vehicle antenna device further comprises a power division network module (5), and a radio frequency port of the GNSS antenna module (1) is connected with the plurality of antenna units (21) through the power division network module (5).
3. The antenna device for vehicle according to claim 2, characterized by The vehicle antenna device comprises a plurality of phase shifters (4), the AP module (3) is connected with the plurality of phase shifters (4) to output a control signal to at least one phase shifter (4) according to current satellite searching quality information, and each phase shifter (4) in the plurality of phase shifters (4) is connected with one antenna unit (21) to independently adjust the feeding phase of the antenna unit (21).
4. The antenna device for vehicle according to claim 3, characterized by The plurality of phase shifters (4) are respectively electrically connected with the GNSS antenna module (1) to supply power to each phase shifter (4) by the GNSS antenna module (1).
5. The antenna device for vehicle according to claim 3, characterized by The AP module (3) comprises a collection unit, a judgment unit and an execution unit. The collection unit is connected with the GNSS antenna module (1) to obtain the current satellite searching quality information from the GNSS antenna module (1). The judgment unit is connected with the collection unit to judge whether the current satellite searching quality meets the standard according to the current satellite searching quality information, the execution unit is connected with the judgment unit to generate the control signal when the judgment unit outputs a signal indicating that the satellite searching quality does not meet the standard, and the execution unit is connected with the plurality of phase shifters (4) to transmit the control signal to the corresponding phase shifter (4).
6. The antenna device for vehicle according to claim 5, characterized by The collection unit is configured to collect at least one of a satellite searching value, a CN value and an HDOP value of the GNSS antenna module (1).
7. The antenna device for vehicle according to claim 5, characterized by The execution unit is provided with a memory, and the memory stores a mapping table information, which comprises a mapping relationship between the phase offset of one or more phase shifters (4) and the angle offset of the array antenna module (2).
8. The antenna device for vehicle according to claim 3, characterized by The AP module (3) is one of an AP module with a model number of MT2735, IMX8Q, SA515 or SA525.
9. An in-vehicle apparatus comprising a power supply device for supplying electric power, characterized by The application further relates to the vehicle antenna device according to any one of claims 1-8, and the power supply device supplies power to the vehicle antenna device.