A system for sharing GNSS data between in-vehicle electronic domains
By integrating a GNSS module within the communication domain and enabling data sharing via gigabit Ethernet, the problem of redundant GNSS functional modules in the vehicle electronic architecture is solved, resulting in a significant reduction in cost and high-precision navigation functionality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANGZHOU HANGSHENG TECH CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-07-14
AI Technical Summary
The existing vehicle electronic architecture has duplication of GNSS function modules among various electronic domains, which increases the cost of the vehicle domain controller.
Integrate the GNSS function module within the communication domain and connect it to the intelligent driving domain and intelligent cockpit domain via a gigabit Ethernet switch chip to achieve GNSS data sharing, and then remove the GNSS function module from the intelligent driving domain and intelligent cockpit domain.
It reduces the complexity and cost of hardware design in the intelligent driving and intelligent cockpit domains, resulting in an overall reduction of 67% in electronic hardware costs.
Smart Images
Figure CN224503395U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle electronics, and in particular to a system for sharing GNSS data between vehicle electronic domains. Background Technology
[0002] With the development of intelligent in-vehicle electronics, intelligent driving and intelligent cockpits are widely used, and traditional electronic architectures are evolving from distributed to domain and centralized computing architectures. While advanced electronic architectures provide a platform foundation for continuous updates to various functions, the application of these functions still relies on powerful hardware at the underlying level, such as sensors, chips, cellular, Bluetooth, and WiFi communications. This has also led to a continuous increase in the cost proportion of in-vehicle electronics.
[0003] Some underlying functional requirements are duplicated across electronic domains, such as cellular communication. Remote vehicle control, infotainment system networking, and remote 360° surround view monitoring all require this functionality. Corresponding to the current electronic architecture, there is a dedicated communication domain specifically for implementing wireless communication functions, eliminating the need for each electronic domain to have a cellular communication module, thus avoiding increased costs. Existing vehicle domain controllers all have GNSS functionality modules (such as...). Fig. 1-2 As shown in the figure, the duplication of GNSS functions also increases the cost of the vehicle domain controller. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a system for sharing GNSS data between vehicle electronic domains. This system reduces the design of GNSS modules by removing GNSS modules for the intelligent driving domain and intelligent cockpit domain, while retaining the GNSS module for the communication domain. Through a reasonable architecture design, communication is established to achieve GNSS data sharing and reduce the hardware cost of the electronic system.
[0005] The purpose of this utility model is achieved as follows: A system for sharing GNSS data between vehicle electronic domains includes an intelligent driving domain, an intelligent cockpit domain, and a communication domain. The communication domain integrates a GNSS function module, while neither the intelligent driving domain nor the intelligent cockpit domain has a GNSS function module. The communication domain is connected to the gigabit Ethernet PHY of the intelligent driving domain and the intelligent cockpit domain via a gigabit Ethernet switch chip. The communication domain shares GNSS data with the intelligent driving domain and the intelligent cockpit domain via gigabit Ethernet interconnection. The gigabit Ethernet 1000Base-T1 interface of the intelligent driving domain and the gigabit Ethernet 1000Base-T1 interface of the intelligent cockpit domain are connected to the 1000Base-T1 interface of the gigabit Ethernet switch chip in the communication domain.
[0006] Compared with the prior art, the beneficial effects of this utility model using the above technical solution are as follows: In this utility model, the communication domain adopts a GNSS functional module design, while the original GNSS functional design is removed from the intelligent driving domain and intelligent cockpit domain; the communication domain communicates with the intelligent driving domain and intelligent cockpit domain via a gigabit Ethernet switch chip, and the communication domain shares GNSS data with the intelligent driving and intelligent cockpit domains through gigabit Ethernet interconnection, enabling the intelligent driving and intelligent cockpit domains to achieve high-precision navigation functions even without a GNSS functional module; the complexity of hardware design and experimentation in the intelligent driving and intelligent cockpit domains is reduced, while the overall electronic hardware cost, experimental and testing development costs are also reduced, resulting in a 67% saving in the overall electronic domain GNSS cost.
[0007] Furthermore, the 1000Base-T1 interface of the gigabit Ethernet switch chip in the communication domain includes interface one and interface two.
[0008] Furthermore, the interface one includes: a common-mode inductor LC5, an ESD transistor D15, an AC capacitor C527 and an AC capacitor C325 on the MDI signal line, and a common-mode terminal network composed of resistors R135, R298, R299 and capacitor C526. The common-mode terminal network is connected to the smart cockpit domain Ethernet interface socket via an Ethernet 4-in-1 socket CON11.
[0009] Furthermore, the second interface includes: a common-mode inductor LC1, an ESD transistor D16, an AC capacitor C541 and an AC capacitor C542 on the MDI signal line, and a common-mode terminal network composed of resistors R301, R302, R325 and capacitor C545. The common-mode terminal network is connected to the intelligent driving domain Ethernet interface socket through an Ethernet HSD socket CON8.
[0010] Furthermore, the Gigabit Ethernet 1000Base-T1 interface of the intelligent driving domain includes: a common-mode inductor LC11, an ESD transistor D32, AC capacitors C456 and C471 on the MDI signal line, and a common-mode terminal network composed of resistors R654, R658, R698 and capacitor C595. The common-mode terminal network is connected to the communication domain Ethernet interface socket through the Ethernet HSD socket CON19.
[0011] Furthermore, the Gigabit Ethernet 1000Base-T1 interface of the intelligent cockpit domain includes: a common-mode inductor LC1, AC capacitors C122 and C125 on the MDI signal line, and a common-mode terminal network composed of resistors R116, R135, R138 and capacitor C126. The common-mode terminal network is connected to the communication domain Ethernet interface socket through the Ethernet HSD socket CON1. Varistors D29 and D28 are connected in parallel between the common-mode terminal network and the Ethernet HSD socket CON1.
[0012] Furthermore, the GNSS functional modules integrated within the communication domain are interconnected via gigabit Ethernet to share GNSS data with the intelligent driving domain and the intelligent cockpit domain.
[0013] Furthermore, the ESD tube is model SZESD7002WTTIG.
[0014] Furthermore, the varistors D29 and D28 are of model AVRH10C101KT1R1NE8.
[0015] Furthermore, the common mode inductor is of model DLW43MH201XK2L. Attached Figure Description
[0016] Fig. 1 Block diagram of existing technology system.
[0017] Fig. 2 GNSS circuits in the existing technologies of intelligent cockpit domain, intelligent driving domain and existing communication domain.
[0018] Fig. 3 System configuration block diagram of this utility model.
[0019] Fig. 4 This utility model relates to a 1000Base-T1 interface circuit in a gigabit Ethernet switch for communication domains.
[0020] Fig. 5 This utility model presents a schematic diagram of a gigabit Ethernet 1000Base-T1 interface circuit for intelligent driving domain.
[0021] Fig. 6 This utility model presents a schematic diagram of the 1000Base-T1 interface circuit in the intelligent cockpit domain. Detailed Implementation
[0022] like Fig. 3The system shown includes an intelligent driving domain, an intelligent cockpit domain, and a communication domain. The communication domain integrates a GNSS function module, while neither the intelligent driving domain nor the intelligent cockpit domain has a GNSS function module. The communication domain is connected to the gigabit Ethernet PHYs of the intelligent driving domain and the intelligent cockpit domain via a gigabit Ethernet switch chip. The communication domain shares GNSS data with the intelligent driving domain and the intelligent cockpit domain via gigabit Ethernet interconnection. The gigabit Ethernet 1000Base-T1 interfaces of the intelligent driving domain and the intelligent cockpit domain are connected to the 1000Base-T1 interface of the gigabit Ethernet switch chip in the communication domain.
[0023] like Fig. 4 As shown, the 1000Base-T1 interface of the Gigabit Ethernet Switch chip in the communication domain includes Interface 1 and Interface 2.
[0024] Fig. 4 (a) is the circuit schematic of Interface 1. PORT6 is the 1000Base-T1 interface circuit in the Gigabit Ethernet Switch circuit in the communication domain. Interface 1 includes: common mode inductor LC5, ESD tube D15, AC capacitor C527 and AC capacitor C325 on the MDI signal line, and a common mode terminal network composed of resistor R135, resistor R298, resistor R299 and capacitor C526. The common mode terminal network is connected to the smart cockpit domain Ethernet interface socket through Ethernet 4in1 socket CON11.
[0025] Fig. 4 (b) is the circuit schematic of interface two. PORT4 is the 1000Base-T1 interface circuit in the Gigabit Ethernet Switch circuit in the communication domain. Interface two includes: common mode inductor LC1, ESD tube D16, AC capacitor C541 and AC capacitor C542 on the MDI signal line, and a common mode terminal network composed of resistor R301, resistor R302, resistor R325 and capacitor C545. The common mode terminal network is connected to the intelligent driving domain Ethernet interface socket through Ethernet HSD socket CON8.
[0026] like Fig. 5 As shown, PORT3 is the 1000Base-T1 interface circuit in the Gigabit Ethernet Switch circuit of the intelligent driving domain; the Gigabit Ethernet 1000Base-T1 interface of the intelligent driving domain includes: common mode inductor LC11, ESD tube D32, AC capacitors C456 and C471 on the MDI signal line, and a common mode terminal network composed of resistors R654, R658, R698 and capacitor C595. The common mode terminal network is connected to the communication domain Ethernet interface socket through Ethernet HSD socket CON19.
[0027] like Fig. 6 As shown, the Gigabit Ethernet 1000Base-T1 interface of the intelligent cockpit domain includes: a common-mode inductor LC1, AC capacitors C122 and C125 on the MDI signal line, and a common-mode terminal network composed of resistors R116, R135, R138 and capacitor C126. The common-mode terminal network is connected to the Ethernet interface socket of the communication domain through the Ethernet HSD socket CON1. Varistors D29 and D28 are connected in parallel between the common-mode terminal network and the Ethernet HSD socket CON1. Varistors D29 and D28 are of model AVRH10C101KT1R1NE8.
[0028] The GNSS function module integrated in the communication domain is interconnected with the intelligent driving domain and intelligent cockpit domain via gigabit Ethernet; the ESD tubes are all of the SZESD7002WTTIG model; the common mode inductors are all of the DLW43MH201XK2L model.
[0029] In operation, the Gigabit Ethernet 1000Base-T1 interface of the intelligent driving domain and the Gigabit Ethernet 1000Base-T1 interface of the intelligent cockpit domain are connected to the 1000Base-T1 interface of the Gigabit Ethernet Switch chip in the communication domain. The communication domain communicates with the Gigabit Ethernet PHYs of the intelligent driving domain and the intelligent cockpit domain through the Gigabit Ethernet Switch chip. The communication domain shares GNSS data with the intelligent driving and intelligent cockpit domains through Gigabit Ethernet interconnection, enabling the intelligent driving and intelligent cockpit domains to achieve high-precision navigation functions even without GNSS functional modules. Original solution price: 3 GNSS modules in the electronic domain, price 177 yuan; This invention price: only 1 GNSS module is retained in the communication domain, price 59 yuan, reducing the overall electronic hardware cost.
[0030] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.
Claims
1. A system for sharing GNSS data between vehicle electronic domains, comprising an intelligent driving domain, an intelligent cockpit domain, and a communication domain, characterized in that, The communication domain integrates a GNSS function module, while neither the intelligent driving domain nor the intelligent cockpit domain has a GNSS function module. The communication domain is connected to the gigabit Ethernet PHY of the intelligent driving domain and the intelligent cockpit domain via a gigabit Ethernet switch chip, and the communication domain shares GNSS data with the intelligent driving domain and the intelligent cockpit domain via gigabit Ethernet interconnection. The gigabit Ethernet 1000Base-T1 interface of the intelligent driving domain and the gigabit Ethernet 1000Base-T1 interface of the intelligent cockpit domain are connected to the 1000Base-T1 interface of the gigabit Ethernet switch chip in the communication domain.
2. The system for sharing GNSS data between vehicle electronic domains according to claim 1, characterized in that, The 1000Base-T1 interface of the gigabit Ethernet switch chip in the communication domain includes interface one and interface two.
3. A system for sharing GNSS data between vehicle electronic domains according to claim 2, characterized in that, The interface includes: a common-mode inductor LC5, an ESD transistor D15, an AC capacitor C527 and an AC capacitor C325 on the MDI signal line, and a common-mode terminal network composed of resistors R135, R298, R299 and C526. The common-mode terminal network is connected to the smart cockpit domain Ethernet interface socket via an Ethernet 4-in-1 socket CON11.
4. A system for sharing GNSS data between vehicle electronic domains according to claim 2, characterized in that, The second interface includes: a common-mode inductor LC1, an ESD transistor D16, an AC capacitor C541 and an AC capacitor C542 on the MDI signal line, and a common-mode terminal network composed of resistors R301, R302, R325 and capacitor C545. The common-mode terminal network is connected to the intelligent driving domain Ethernet interface socket through an Ethernet HSD socket CON8.
5. A system for sharing GNSS data between vehicle electronic domains according to claim 1, characterized in that, The Gigabit Ethernet 1000Base-T1 interface of the intelligent driving domain includes: a common-mode inductor LC11, an ESD transistor D32, AC capacitors C456 and C471 on the MDI signal line, and a common-mode terminal network composed of resistors R654, R658, R698 and capacitor C595. The common-mode terminal network is connected to the Ethernet interface socket of the communication domain through the Ethernet HSD socket CON19.
6. A system for sharing GNSS data between vehicle electronic domains according to claim 1, characterized in that, The Gigabit Ethernet 1000Base-T1 interface of the intelligent cockpit domain includes: a common-mode inductor LC1, AC capacitors C122 and C125 on the MDI signal line, and a common-mode terminal network composed of resistors R116, R135, R138 and capacitor C126. The common-mode terminal network is connected to the Ethernet interface socket of the communication domain through the Ethernet HSD socket CON1. Varistors D29 and D28 are connected in parallel between the common-mode terminal network and the Ethernet HSD socket CON1.
7. A system for sharing GNSS data between vehicle electronic domains according to claim 1, characterized in that, The GNSS functional modules integrated within the communication domain are interconnected via gigabit Ethernet to share GNSS data with the intelligent driving domain and the intelligent cockpit domain.
8. A system for sharing GNSS data between vehicle electronic domains according to any one of claims 3-5, characterized in that, The ESD tube is model SZESD7002WTTIG.
9. A system for sharing GNSS data between vehicle electronic domains according to claim 6, characterized in that, The varistors D29 and D28 are of model AVRH10C101KT1R1NE8.
10. A system for sharing GNSS data between vehicle electronic domains according to any one of claims 3-6, characterized in that, The common mode inductor is model DLW43MH201XK2L.