Identification circuit of UWB positioning module, UWB positioning module, vehicle positioning system and vehicle

Abstract

The application relates to the technical field of vehicle UWB positioning, and discloses a recognition circuit of a UWB positioning module, a UWB positioning module, a vehicle positioning system and a vehicle. The recognition circuit comprises at least one signal generation module. An input end of each signal generation module is adapted to be connected to one of a plurality of power line bundles of a power supply or be vacant. The signal generation module is adapted to generate a recognition signal according to the connection condition of the input end, and the recognition signal is used for determining a preset positioning anchor point corresponding to the UWB positioning module. The application does not need complicated hardware or software differentiation design, utilizes the existing power supply line bundle, realizes the recognition of the UWB positioning module at low cost, makes the UWB positioning modules installed in different positioning anchor points be commonly designed and produced, significantly reduces the production and maintenance cost, and is favorable to improving the research and development and production efficiency of the vehicle.

Description

Technical Field

[0001] This application relates to the field of vehicle UWB positioning technology, and in particular to an identification circuit for a UWB positioning module, a UWB positioning module, a vehicle positioning system, and a vehicle. Background Technology

[0002] In vehicle positioning systems, to achieve centimeter-level ranging and positioning, a single vehicle typically requires multiple positioning anchor points, with multiple ultra-wideband (UWB) positioning modules installed at these anchor points. Since the positioning software needs to pinpoint the exact location of each anchor point on the vehicle body to execute its function, current technologies primarily differentiate UWB positioning modules installed in different locations by using varying designs, such as different exterior colors, structural dimensions, or different bills of materials (BOMs) for the printed circuit boards (PCBs).

[0003] However, this approach significantly increases manufacturing and maintenance costs, and different types of UWB positioning modules require separate design and development, which seriously affects the efficiency of vehicle research and development and production. Utility Model Content

[0004] This application provides an identification circuit for a UWB positioning module, a UWB positioning module, a vehicle positioning system, and a vehicle. It solves the technical problems of high manufacturing and maintenance costs and low R&D and production efficiency of current UWB positioning modules. This application generates multiple identification signals by selecting different connection methods between power harnesses and identification circuits, and uses multiple identification signals to form a signal sequence corresponding to the positioning anchor point. This enables universal identification of UWB positioning modules at low cost, allowing UWB positioning modules installed at different positioning anchor points to be universally designed and manufactured, significantly reducing manufacturing and maintenance costs.

[0005] To achieve the above objectives, the main technical solutions adopted in this application include: In a first aspect, embodiments of this application provide an identification circuit for a UWB positioning module, the identification circuit including at least one signal generation module; The input terminal of each signal generation module is adapted to be connected to one of the multiple power supply harnesses or left unused. The signal generation module is adapted to generate an identification signal based on the connection status of the input terminal, and the identification signal is used to determine the preset positioning anchor point corresponding to the UWB positioning module.

[0006] The identification circuit proposed in this application connects the input terminals of signal generation modules for different preset positioning anchor points to different power supply harnesses or leaves them unconnected. This allows the signal generation modules to generate identification signals corresponding to different connection methods. Furthermore, by utilizing the multiple identification signals generated by multiple signal generation modules, the preset positioning anchor point corresponding to the UWB positioning module is identified based on the signal sequence composed of these multiple identification signals. Therefore, compared with related technologies, this application eliminates the need for complex hardware or software differentiation designs. By utilizing existing power supply harnesses, it achieves UWB positioning module identification at low cost, enabling UWB positioning modules installed at different positioning anchor points to be universally designed and manufactured. This significantly reduces manufacturing and maintenance costs and improves vehicle research and development and production efficiency.

[0007] Optionally, in some embodiments of this application, the plurality of power harnesses include a first power harness and a second power harness, wherein the first power harness is used to output a high-level signal and the second power harness is used to output a low-level signal.

[0008] Optionally, in some embodiments of this application, each of the signal generation modules includes a signal conditioning unit and a clamping unit. The first end of the signal conditioning unit is connected to one of the plurality of power harnesses as the input end of the signal generation module or is left unused. The second end of the signal conditioning unit is connected to the first end of the clamping unit. The third end of the signal conditioning unit is connected to the second end of the clamping unit as the output end of the signal generation module. The signal conditioning unit is adapted to generate the identification signal, and the first end of the clamping unit is adapted to receive a preset voltage to clamp the identification signal based on the preset voltage.

[0009] The signal conditioning unit can generate identification signals with different levels based on the connection status of its first terminal to multiple power supply harnesses, thereby using the level of the identification signal to characterize the relevant information of the preset positioning anchor point. Furthermore, the clamping unit ensures that the identification signal is effectively parsed, thus enabling effective identification of the preset positioning anchor point corresponding to the UWB positioning module and improving the reliability of the identification circuit.

[0010] Optionally, in some embodiments of this application, the signal conditioning unit includes a first resistor, a second resistor, and a first diode; Wherein, the first end of the first resistor is connected to one of the plurality of power supply harnesses or is unconnected, the second end of the first resistor is connected to the cathode of the first diode, the anode of the first diode is connected to the first end of the clamping unit, the first end of the second resistor is connected to the first end of the first resistor, and the second end of the second resistor is connected to the control module and the second end of the clamping unit.

[0011] By utilizing the voltage drop across the first diode, first resistor, and second resistor, the signal conditioning unit can accurately generate identification signals of different levels based on the connection status of its first terminal to the power supply harness, thereby accurately representing the relevant information of the preset positioning anchor point. Furthermore, the first diode provides reverse signal protection, ensuring that a high voltage level received at the first terminal of the first resistor will not flow directly to the first terminal of the clamping unit, significantly improving the reliability of the signal conditioning unit.

[0012] Optionally, in some embodiments of this application, the signal conditioning unit further includes a third resistor, the first end of which is connected to the second end of the second resistor, and the second end of the third resistor is grounded.

[0013] The third resistor can combine with the first resistor, the second resistor, and the first diode to achieve a voltage divider effect, thereby increasing the possible level of the identification signal. This greatly increases the variety of signal sequences composed of multiple identification signals, enabling the multiple identification signals output by the signal generation module to represent more preset positioning anchor points and expanding the applicable scenarios of the identification circuit.

[0014] Optionally, in some embodiments of this application, the clamping unit includes a second diode and a third diode, the cathode of the second diode is adapted to receive the preset voltage, the anode of the second diode is connected to the cathode of the third diode and has a connection node, and the anode of the third diode is grounded; The cathode of the second diode is configured as the first end of the clamping unit, and the connection node is configured as the second end of the clamping unit.

[0015] The second diode receives a preset voltage, and the unidirectional conductivity of the second and third diodes ensures that the voltage level at the connection node does not exceed the preset voltage, effectively clamping the identification signal generated by the signal conditioning unit.

[0016] Optionally, in some embodiments of this application, the identification circuit further includes an electrostatic tube, the first end of which is connected to the first end of the signal generation module, and the second end of which is grounded.

[0017] The electrostatic discharge tube protects the identification circuit, enhancing its anti-static capability and further improving its reliability.

[0018] Secondly, embodiments of this application provide a UWB positioning module, the UWB positioning module including the identification circuit as described in the above embodiments, the identification circuit being adapted to generate multiple identification signals.

[0019] The UWB positioning module proposed in this application sets up identification circuits connected to different power harnesses or left empty for different preset positioning anchor points. This allows the identification circuits to generate identification signals corresponding to different connection methods, and then use a signal sequence composed of multiple identification signals to identify the preset positioning anchor point corresponding to the UWB positioning module. Therefore, compared with related technologies, this application does not require complex hardware or software differentiation designs. By utilizing existing power supply harnesses, it achieves UWB positioning module identification at low cost, enabling UWB positioning modules installed at different positioning anchor points to be universally designed and manufactured, significantly reducing manufacturing and maintenance costs, and improving vehicle research and development and production efficiency.

[0020] Thirdly, this application provides a vehicle positioning system, which includes a plurality of UWB positioning modules as described in the above embodiments, and each UWB positioning module corresponds to a preset positioning anchor point.

[0021] Fourthly, embodiments of this application provide a vehicle, the vehicle including the vehicle positioning system described in the above embodiments. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the identification circuit of a UWB positioning module proposed in an embodiment of this application; Figure 2 This is a schematic diagram of the power harness connection in one embodiment of this application; Figure 3 This is a schematic diagram of the structure of a signal generation module according to an embodiment of this application; Figure 4 This is a schematic diagram of the structure of a signal generation module according to another embodiment of this application; Figure 5 This is a schematic diagram of the structure of a vehicle positioning system proposed in an embodiment of this application. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] UWB positioning modules transmit data via nanosecond-level narrow pulses, utilizing wide-spectrum characteristics and calculating the distance between devices based on Time of Flight (ToF) positioning algorithms, achieving centimeter-level accuracy. In vehicle positioning systems, UWB modules can be used not only for ranging and positioning, enabling users to unlock their vehicles seamlessly, but also in CPD (Car Positioning Device) systems to detect if children or pets are left inside the vehicle, preventing safety hazards. They can also be used for automatic opening of the tailgate or trunk.

[0026] To achieve centimeter-level ranging and positioning, a single vehicle typically requires multiple positioning anchor points, with multiple UWB positioning modules installed at these anchor points. For example, multiple UWB positioning modules can be installed on the sides of the front and rear bumpers, the front pillar (A-pillar), the center pillar (B-pillar), and the roof to achieve networked cross-positioning.

[0027] Since the positioning function software needs to know the corresponding position of each positioning anchor point on the vehicle body in order to perform the corresponding function, the current related technologies mainly distinguish them by designing UWB positioning modules with different forms in different installation positions, such as using different appearance colors, structural dimensions, or using different BOMs for PCBs.

[0028] Specifically, in some application scenarios of related technologies, different mounting and positioning holes are designed, or the module sizes are made different, or the structural shell color is designed to be different, in order to distinguish UWB positioning modules installed at different positioning anchor points.

[0029] In other application scenarios of related technologies, different BOMs are used for PCBs, and different ID information is formed by different types of resistors. The software distinguishes UWB positioning modules installed at different positioning anchor points by the difference in this ID information.

[0030] However, due to the lack of universality of UWB positioning modules installed at different positioning anchor points, the production and inventory sides need to maintain multiple different UWB positioning modules at the same time. The after-sales service also needs to prepare separate stock for different UWB positioning modules. After-sales maintenance personnel need to confirm the installation position of the corresponding module to avoid incorrect installation that would cause the system to malfunction. These problems have greatly increased the production and maintenance costs.

[0031] Furthermore, different forms of UWB positioning modules require separate design and development, and each UWB positioning module must first determine its corresponding positioning anchor point before proceeding with subsequent operations. If the UWB positioning modules are designed in different forms, different software versions need to be developed accordingly. This not only increases the initial hardware and software development costs, but also leads to the need to carry out adaptation work for each version during later module maintenance and software upgrades, significantly increasing the overall workload and seriously affecting the efficiency of vehicle research and development and production.

[0032] This application provides an identification circuit 100 for a UWB positioning module 10, such as... Figure 1 As shown, the identification circuit 100 includes at least one signal generation module 110. The input terminal of each signal generation module 110 is adapted to be connected to one of a plurality of power supply harnesses of the power supply 20 or left unconnected. The signal generation module 110 is adapted to generate an identification signal based on the connection status of the input terminal. The identification signal is used to determine the preset positioning anchor point corresponding to the UWB positioning module 10.

[0033] Specifically, the power supply 20 may include a first power harness and a second power harness, wherein the first power harness is used to output a high-level signal VDD, and the second power harness is used to output a low-level signal GND. For example, the high-level signal VDD is 12V, and the low-level signal GND is 0V.

[0034] For a UWB positioning module 10 installed at a preset positioning anchor point, the input terminal of each signal generation module 110 will selectively connect to either the first power harness or the second power harness, or remain unconnected, according to the preset configuration of the positioning anchor point, thereby converting the connection status of the input terminal into a corresponding identification signal. The signal sequence composed of multiple identification signals forms a one-to-one mapping relationship with the preset positioning anchor point.

[0035] Furthermore, such as Figure 2 As shown, in some embodiments of this application, the control module 30 receives the aforementioned multiple identification signals, then determines the preset positioning anchor point corresponding to the UWB positioning module 10 by parsing the corresponding signal sequence, and triggers the ranging and positioning program corresponding to the preset positioning anchor point. A power conversion module 40 is connected between the power supply 20 and the control module 30. The power conversion module 40 is configured to convert the power supply voltage VDD output by the power supply 20 into a preset voltage VCC, and input the preset voltage VCC into the various signal generation modules 110 in the identification circuit 100. This preset voltage VCC is a voltage that ensures the control module 30 can operate normally, and can be a voltage value such as 3.3V, 1.8V, or 5V.

[0036] The identification circuit 100 provided in this embodiment connects the input terminals of the signal generation module 110 to different power harnesses or leaves them empty for different preset positioning anchor points, thereby enabling the signal generation module 110 to generate identification signals corresponding to different connection methods. Multiple identification signals are generated by multiple signal generation modules 110, allowing the control module to identify the preset positioning anchor point corresponding to the UWB positioning module 10 based on the signal sequence composed of multiple identification signals. Therefore, compared with related technologies, this application does not require complex hardware or software differentiation designs. Utilizing the existing power supply 20's wiring harness, it achieves the identification of the UWB positioning module 10 at low cost, enabling the UWB positioning module 10 installed at different positioning anchor points to be universally designed and manufactured, significantly reducing manufacturing and maintenance costs, and improving vehicle research and development and production efficiency.

[0037] In some embodiments of this application, such as Figure 3 and Figure 4 As shown, each signal generation module 110 includes a signal conditioning unit 111 and a clamping unit 112. The first end of the signal conditioning unit 111 serves as the input end of the signal generation module 110 and is connected to one of the multiple power supply harnesses or left unused. The second end of the signal conditioning unit 111 is connected to the first end of the clamping unit 112. The third end of the signal conditioning unit 111 serves as the output end of the signal generation module 110 and is connected to the second end of the clamping unit 112.

[0038] The signal conditioning unit 111 is adapted to generate an identification signal, and the first end of the clamping unit 112 is adapted to receive a preset voltage VCC to clamp the identification signal based on the preset voltage VCC.

[0039] Specifically, the signal conditioning unit 111 can generate a corresponding voltage value identification signal at the output terminal when the input terminal is connected to a high-level signal VDD, a low-level signal GND, or is empty, through the design of the circuit topology.

[0040] If the identification signal voltage output by the signal conditioning unit 111 is higher than the preset voltage VCC, the clamping device in the clamping unit 112 is turned on, limiting the identification signal voltage to the preset voltage VCC. If the identification signal voltage does not exceed the preset voltage VCC, the clamping device remains off, and the identification signal maintains its original voltage value. The identification signal after clamping is transmitted to the control module 30 through the output terminal of the signal generation module 110, ensuring that the signal received by the control module 30 is within its stable identification voltage range.

[0041] The signal conditioning unit 111 can generate identification signals with different levels according to the connection status of its first terminal with multiple power supply harnesses, thereby using the level of the identification signal to characterize the relevant information of the preset positioning anchor point. In addition, the clamping unit 112 can ensure that the identification signal is effectively parsed, so that the control module 30 can effectively identify the preset positioning anchor point corresponding to the UWB positioning module, improving the reliability of the identification circuit.

[0042] Furthermore, such as Figure 3 As shown, in some embodiments of this application, the signal conditioning unit 111 includes a first resistor R1, a second resistor R2, and a first diode D1. The first end of the first resistor R1 is connected to one of a plurality of power supply harnesses or is left unconnected. The second end of the first resistor R1 is connected to the cathode of the first diode D1. The anode of the first diode D1 is connected to the first end of the clamping unit 112. The first end of the second resistor R2 is connected to the first end of the first resistor R1. The second end of the second resistor R2 is connected to the control module and the second end of the clamping unit 112.

[0043] In addition, the signal conditioning unit 111 also includes a first capacitor C1, the first end of the first capacitor C1 is connected to the first end of the first resistor R1, and the second end of the first capacitor C1 is grounded to achieve a filtering effect.

[0044] Specifically, when the input terminal of the signal conditioning unit 111 is connected to the first power supply harness, the signal generation module receives a high-level signal VDD. At this time, current flows through the second resistor R2, and simultaneously, the clamping unit 112 clamps and protects the second terminal of the second resistor R2, making the voltage at the second terminal of the second resistor R2 VCC1. VCC1 is slightly less than the preset voltage VCC, specifically the preset voltage VCC minus the forward voltage drop of the first diode D1, which is typically 0.7V. Therefore, when the input terminal of the signal generation module is connected to the first power supply harness, its output terminal outputs an identification signal with a voltage value of VCC1.

[0045] When the input terminal of the signal conditioning unit 111 is connected to the second power supply harness, the signal generation module receives a low-level signal GND. At this time, the voltage at the second terminal of the second resistor R2 is GND. Therefore, when the input terminal of the signal generation module is connected to the second power supply harness, its output terminal outputs an identification signal with a voltage value of GND.

[0046] When the input terminal of the signal conditioning unit 111 is unconnected, i.e., no power supply is connected, the first diode D1 conducts, thereby generating current that flows sequentially through the first resistor R1 and the second resistor R2. The voltage at the second terminal of the second resistor R2 is VCC2, which is slightly less than the preset voltage VCC. Specifically, VCC2 is the preset voltage VCC minus the voltage drop generated by the first diode D1, the first resistor R1, and the second resistor R2. Therefore, when the input terminal of the signal generation module is unconnected, its output terminal outputs an identification signal with a voltage value of VCC2.

[0047] It should be noted that in some embodiments of this application, the resistance values ​​of the first resistor R1 and the second resistor R2 are relatively small, so that the difference between the voltage values ​​VCC1 and VCC2 can be ignored. That is to say, in both cases where the input terminal of the signal generation module 110 is connected to the first power supply harness and when it is idle, the voltage value of the identified signal can be regarded as the same, approximately equal to the preset voltage VCC.

[0048] Therefore, taking the two signal generation modules 110 as an example, the recognition signals they generate can form four signal sequences: VCC and GND, VCC and VCC, GND and GND, and GND and VCC, thereby identifying four preset positioning anchor points.

[0049] In addition, when the input terminal of the signal conditioning unit 111 is connected to the first power supply harness, the first diode D1 plays a reverse connection protection role, ensuring that the high-level signal VDD will not flow directly through the first resistor R1.

[0050] Through the voltage drop across the first diode D1, the first resistor R1, and the second resistor R2, the signal conditioning unit 111 can accurately generate identification signals corresponding to different voltage levels based on the connection status of its first terminal to the power supply harness, thereby accurately representing the relevant information of the preset positioning anchor point. Furthermore, the first diode D1 provides reverse connection protection, ensuring that the signal does not flow directly to the first terminal of the clamping unit 112 when a high voltage level is received at the first terminal of the first resistor R1, significantly improving the reliability of the signal conditioning unit 111.

[0051] Furthermore, such as Figure 4 As shown, in some other embodiments of this application, the signal conditioning unit 111 includes a first resistor R1, a second resistor R2, a third resistor R3, and a first diode D1. The first terminal of the third resistor R3 is connected to the second terminal of the second resistor R2, and the second terminal of the third resistor R3 is grounded. Similarly, the signal conditioning unit 111 also includes a first capacitor C1. Other circuit structures are the same as in the above embodiments; please refer to [link to specific examples]. Figure 2 The circuit structure shown will not be described in detail here.

[0052] Specifically, when the input terminal of the signal conditioning unit 111 is connected to the first power supply harness and when it is connected to the second power supply harness, the voltage value of the identification signal output by the output terminal of the signal generation module 110 is the same as... Figure 3 The embodiments shown are the same, and for detailed descriptions, please refer to the above embodiments, which will not be repeated here.

[0053] When the input terminal of the signal conditioning unit 111 is unused, i.e. no power supply is connected, the first diode D1 is turned on, thereby generating current that flows through the first resistor R1, the second resistor R2 and the third resistor R3 in sequence. The voltage at the second terminal of the second resistor R2 is VCC3, and by setting the resistance value of the third resistor R3 to divide the voltage, VCC3 can be made significantly lower than VCC.

[0054] Therefore, taking the two signal generation modules 110 as an example, the generated identification signals can form nine signal sequences: VCC and VCC3, VCC and GND, VCC and VCC, GND and VCC3, GND and GND, GND and VCC, VCC3 and VCC3, VCC3 and VCC, and VCC3 and GND, thereby identifying nine preset positioning anchor points. Figure 3 Compared to the illustrated embodiment, the number of identifiable preset positioning anchor points is greatly increased.

[0055] Therefore, the third resistor R3 can be combined with the first resistor R1, the second resistor R2, and the first diode D1 to achieve a voltage divider effect, thereby increasing the possible level of the identification signal and greatly increasing the variety of signal sequences composed of multiple identification signals. This allows the multiple identification signals output by the signal generation module 110 to represent more preset positioning anchor points, expanding the applicable scenarios of the identification circuit 100.

[0056] In some embodiments of this application, such as Figure 3 and Figure 4 As shown, the clamping unit 112 includes a second diode D2 and a third diode D3. The cathode of the second diode D2 is adapted to receive a preset voltage VCC. The anode of the second diode D2 is connected to the cathode of the third diode D3 and has a connection node. The anode of the third diode D3 is grounded. The cathode of the second diode D2 is configured as the first end of the clamping unit 112, and the connection node is configured as the second end of the clamping unit 112.

[0057] In some embodiments of this application, the clamping unit 112 further includes a second capacitor C2, the first end of which is connected to the connection node, and the second end of which is grounded to provide filtering and protection.

[0058] Specifically, when the input terminal of the signal conditioning unit 111 is connected to the first power supply harness, the signal generation module 110 receives a high-level signal VDD. At this time, the voltage at the connection node is greater than the preset voltage VCC, so the second diode D2 is forward-biased, thereby clamping the voltage at the connection node to the preset voltage VCC.

[0059] When the input terminal of the signal conditioning unit 111 is connected to the second power supply harness or is unused, the voltage at the connection node is less than the preset voltage VCC. Therefore, the second diode D2 is reverse-cut off, thereby causing the clamping effect to fail.

[0060] The second diode D2 receives the preset voltage VCC, and the unidirectional conductivity of the second diode D2 and the third diode D3 is used to ensure that the level at the connection node does not exceed the preset voltage VCC, thus effectively clamping the identification signal generated by the signal conditioning unit 111.

[0061] In some embodiments of this application, such as Figure 3 and Figure 4 As shown, the identification circuit 100 also includes an electrostatic transistor D4. The first end of the electrostatic transistor D4 is connected to the first end of the signal generation module 110, and the second end of the electrostatic transistor D4 is grounded.

[0062] Specifically, electrostatic discharge tube D4 is connected in parallel between the input terminal of signal generation module 110 and ground. Under normal operating conditions, it is in a high-resistance state and does not affect the voltage transmission and signal generation of signal generation module 110. When a momentary high voltage occurs at the input terminal of signal generation module 110 due to external environmental factors such as electrostatic discharge or surge impact, electrostatic discharge tube D4 will quickly break down and become in a low-resistance state, discharging the momentary high voltage through the ground terminal. This prevents excessively high voltage from being transmitted to the control unit or other circuit components through signal generation module 110, thereby protecting identification circuit 100, enhancing the anti-static capability of identification circuit 100, and further improving the reliability of identification circuit 100.

[0063] Accordingly, such as Figure 5 As shown in the figure, this application embodiment also provides a UWB positioning module 10, including an identification circuit 100 as described in the above embodiment, the identification circuit 100 being adapted to generate multiple identification signals.

[0064] The identification circuit 100 is connected to the control module 30 to receive multiple identification signals generated by the identification circuit 100 and determine the preset positioning anchor point corresponding to the UWB positioning module 10 based on the multiple identification signals.

[0065] The specific configurations and further functional descriptions of the various circuits and modules described above are the same as those in the corresponding embodiments described above, and will not be repeated here.

[0066] The UWB positioning module 10 proposed in this application embodiment has different power supply harnesses or is left unconnected for different preset positioning anchor points. This allows the identification circuit 100 to generate identification signals corresponding to different connection methods, thereby enabling the identification of the preset positioning anchor point corresponding to the UWB positioning module 10 based on the signal sequence composed of multiple identification signals. Therefore, compared with related technologies, this application does not require complex hardware or software differentiation designs. By utilizing existing power supply harnesses, the identification of the UWB positioning module 10 is achieved at low cost. This allows the UWB positioning module 10 installed at different positioning anchor points to be universally designed and manufactured, significantly reducing manufacturing and maintenance costs and improving vehicle research and development and production efficiency.

[0067] Accordingly, such as Figure 5 As shown in the embodiments of this application, a vehicle positioning system is also provided. The vehicle positioning system includes a plurality of UWB positioning modules 10 as described in the above embodiments, and each UWB positioning module 10 corresponds to a preset positioning anchor point.

[0068] Furthermore, in some embodiments of this application, the vehicle positioning system further includes a control module 30 and a power conversion module 40. A first terminal of the power conversion module 40 is connected to a power supply 20, and a second terminal of the power conversion module 40 is connected to the identification circuit 100 and the control module 30. The power supply 20 may be an on-board power supply. The power conversion module 40 is configured to convert the supply voltage VDD output by the power supply 20 into a preset voltage VCC, and input the preset voltage VCC into the identification circuit 100.

[0069] By setting the power conversion module 40, the power supply voltage VDD output by the power supply 20 can be accurately converted into the preset voltage VCC required by the identification circuit 100, so that the identification circuit 100 can generate an accurate and effective identification signal, thereby ensuring that the control module 30 can effectively identify the preset positioning anchor point corresponding to the UWB positioning module 10.

[0070] Accordingly, this application also provides a vehicle, which includes the vehicle positioning system described in the above embodiments.

[0071] The specific configurations and further functional descriptions of the above modules and units are the same as those in the corresponding embodiments described above, and will not be repeated here.

[0072] For ease of description, the above devices are described separately by function as various units. Of course, in implementing this application, the functions of each unit can be implemented in one or more software and / or hardware.

[0073] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0074] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0075] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

[0076] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An identification circuit for a UWB positioning module, characterized in that, The identification circuit includes at least one signal generation module (110). The input terminal of each of the signal generation modules (110) is adapted to be connected to one of the multiple power harnesses of the power supply (20) or left unused; The signal generation module (110) is adapted to generate an identification signal according to the connection status of the input terminal, and the identification signal is used to determine the preset positioning anchor point corresponding to the UWB positioning module (10).

2. The circuit according to claim 1, characterized in that, The plurality of power harnesses include a first power harness and a second power harness, wherein the first power harness is used to output a high-level signal and the second power harness is used to output a low-level signal.

3. The identification circuit according to claim 1, characterized in that, Each of the signal generation modules (110) includes a signal conditioning unit (111) and a clamping unit (112). The first end of the signal conditioning unit (111) is connected to one of the plurality of power harnesses as the input end of the signal generation module (110) or is left unused. The second end of the signal conditioning unit (111) is connected to the first end of the clamping unit (112). The third end of the signal conditioning unit (111) is connected to the second end of the clamping unit (112) as the output end of the signal generation module (110). The signal conditioning unit (111) is adapted to generate the identification signal, and the first end of the clamping unit (112) is adapted to receive a preset voltage to clamp the identification signal based on the preset voltage.

4. The identification circuit according to claim 3, characterized in that, The signal conditioning unit (111) includes a first resistor R1, a second resistor R2, and a first diode D1; Wherein, the first end of the first resistor R1 is connected to one of the plurality of power supply harnesses or is left unconnected, the second end of the first resistor R1 is connected to the cathode of the first diode D1, the anode of the first diode D1 is connected to the first end of the clamping unit (112), the first end of the second resistor R2 is connected to the first end of the first resistor R1, and the second end of the second resistor R2 is connected to the control module and the second end of the clamping unit (112).

5. The identification circuit according to claim 4, characterized in that, The signal conditioning unit (111) further includes a third resistor R3, the first end of which is connected to the second end of the second resistor R2, and the second end of the third resistor R3 is grounded.

6. The identification circuit according to claim 3, characterized in that, The clamping unit (112) includes a second diode D2 and a third diode D3. The cathode of the second diode D2 is adapted to receive the preset voltage. The anode of the second diode D2 is connected to the cathode of the third diode D3 and has a connection node. The anode of the third diode D3 is grounded. The cathode of the second diode D2 is configured as the first end of the clamping unit (112), and the connection node is configured as the second end of the clamping unit (112).

7. The identification circuit according to claim 1, characterized in that, The identification circuit (100) further includes an electrostatic tube D4, the first end of which is connected to the first end of the signal generation module (110), and the second end of which is grounded.

8. A UWB positioning module, characterized in that, The UWB positioning module includes: The identification circuit according to any one of claims 1 to 7 is adapted to generate a plurality of identification signals.

9. A vehicle positioning system, characterized in that, The vehicle positioning system includes multiple UWB positioning modules as described in claim 8, and each UWB positioning module corresponds to a preset positioning anchor point.

10. A vehicle, characterized in that, The vehicle includes the vehicle positioning system as described in claim 9.

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