OBD wire harness

Abstract

The utility model relates to the technical field of OBD wire harnesses, in particular to an OBD wire harness, which comprises an output end interface and an input end interface, the input end interface is connected with a wired network adapter and an OBD processing device, and the wired network adapter comprises a wired network control module, a storage module, a high-frequency suppression module, an electrostatic protection module and a voltage transformation module; the OBD processing device collects information received by the OBD interface, and the wired network adaptation device connects the information collected by the OBD processing device to an Ethernet network and sends the information to external equipment through connection of the output end interface; according to the OBD wire harness provided by the utility model, the Ethernet connection module is integrated into the device, so that the OBD interface of the vehicle is more easily connected with external equipment of other usb type interfaces, the use portability is improved, and a user is helped to monitor vehicle driving data more conveniently and quickly.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile electronic accessories, especially relates to an OBD wire harness. BACKGROUND

[0002] Early OBD-I does not have unified connection standard, and different automobile manufacturers use different interfaces and communication protocols, which causes the problem of incompatibility between devices, and although the OBD-II scanning adapter is forced to adopt unified standardization in the later period, so that the vehicle can be connected to different detection devices, but the existing OBD-II wire harness still needs to be connected to the converter, that is, the connector with wired USB network card, to realize the network connection between the vehicle and the external device, and the additional converter needs to be carried when going out to be connected to the terminal device such as mobile phone, tablet computer and computer, which increases the burden of carrying, and the converter may be forgotten or lost in an emergency, resulting in failure to diagnose in time, and the connector failure will also cause the vehicle to be unable to be connected. UTILIT Y MODEL CONTENTS

[0003] In order to solve the technical problem that the existing OBD wire harness needs an additional connector to connect the vehicle and the detection device, the utility model provides an OBD wire harness.

[0004] The utility model solves technical problem's scheme provides an OBD wire harness, including output end interface and input end interface, the input end interface is connected with wired network adaptation device and OBD processing apparatus, the wired network adaptation device includes wired network control module, storage module, high frequency suppression module, static protection module and voltage transformation module;

[0005] The OBD processing apparatus collects the information received by the OBD interface, the wired network adaptation device connects the information collected by the OBD processing apparatus to the Ethernet network, and sends to the external device through the output end interface.

[0006] Preferably, the input end interface includes front end pin and rear end containing cavity, the rear end containing cavity is equipped with PCB circuit board, the wired network adaptation device and the OBD processing apparatus are arranged on the PCB circuit board.

[0007] Preferably, the output end interface includes Type-A, Micro Type-B and USB Type-C interface.

[0008] Preferably, the storage module includes a communication interface, and the storage module is in communication connection with the wired network control module through the communication interface.

[0009] Preferably, the wired network control module further comprises a signal processing module.

[0010] Preferably, the wired network control module further comprises a state switching module.

[0011] Preferably, a crystal oscillator is further included on the PCB circuit board, the wired network control module comprises a crystal oscillator input end and a crystal oscillator output end, one electrode of the crystal oscillator is connected to the crystal oscillator input end to access the wired network control module, and one electrode is connected to the crystal oscillator output end to output a clock signal.

[0012] Preferably, the OBD wire harness further comprises a wire, and the output end interface and the input end interface are separately arranged at two ends of the wire.

[0013] Preferably, the wired network adaptation device further comprises a power module, and the power module is connected with the wired network control module, the storage module and the high-frequency suppression module respectively.

[0014] Preferably, the wired network control module supports a Do IP protocol.

[0015] Compared with the prior art, the OBD wire harness provided by the utility model has the following advantages:

[0016] 1. The OBD wire harness provided in the embodiment of the utility model, the OBD processing device collects information received by the OBD interface, the wired network adaptation device connects the information collected by the OBD processing device to an Ethernet network, and sends the information to an external device through the output end interface, a traditional OBD-II diagnostic device needs a special connection interface and an adapter, and the integration of the wired network adaptation device into the OBD wire harness and the connection with the Ethernet make it easier for the vehicle to be connected with a smart device, a special OBD port does not need to be arranged at the device end, the device can be connected to an external device provided with a general usb interface, has better compatibility and expansibility, simplifies device connection, supports various standards and protocols, and is convenient for integration with the external device; data transmission through the Ethernet also has higher bandwidth and faster data transmission speed.

[0017] 2. The OBD wire harness provided in the embodiment of the utility model, the front end pin is a channel connected with a vehicle OBD interface, allows input and output of vehicle monitoring signals or data, and the rear end accommodating cavity provides protection and support for the PCB circuit board, and ensures that elements on the PCB circuit board can normally work.

[0018] 3. The OBD wire harness provided by the embodiment of the utility model, converts the network cable interface connected with the traditional OBD wire harness into USB, integrates the wired network adaptation device into the OBD wire harness to adapt to more extensive external device connection, and the OBD wire harness supports the USB protocol of USB2.0 or USB1.1.

[0019] 4. The OBD wire harness provided by the embodiment of the utility model, the storage module stores data such as firmware, operating system and configuration file, and the storage module communicates with the wired network control module through the communication interface and transmits the stored data information to the wired network control module.

[0020] 5. The OBD wire harness provided by the embodiment of the utility model, the wired network control module internally supports functions such as signal filtering, error detection and transmission optimization, these functions are provided by the signal processing module, and the signal processing module also supports automatic correction and adjustment of cross detection and network adaptation.

[0021] 6. The OBD wire harness provided by the embodiment of the utility model, when the OBD wire harness is not in the working state, the state switching module switches the wired network control module to the low-power state, and when the network data packet arrives, it can trigger the wired network control module to wake up from the low-power state, pull down the voltage of the wired network control module, and the low level trigger, the wired network control module can wake up from the standby mode or the low-power mode and prepare to resume normal operation.

[0022] 7. The OBD wire harness provided by the embodiment of the utility model, the crystal oscillator provides a basic stable clock signal for the wired network control module, which is used for clock synchronization of various modules in the device, including clock synchronization of key functions such as Ethernet communication, data transmission and network processing, to ensure that the wired network adaptation device can operate according to the predetermined time sequence.

[0023] 8. The OBD wire harness provided by the embodiment of the utility model, the wire provides communication and physical connection between the input end and the output end, conducts signals and power, ensures the reliability of the connection between the input end and the output end, must have good environmental adaptability, and ensures the normal operation of the electrical system.

[0024] 9. The OBD wire harness provided by the embodiment of the utility model, the power module provides power for modules of different types and different functions, and the power module can output power of multiple voltage values.

[0025] 10. The OBD wire harness provided by the embodiment of the present application, the Do IP protocol is the ISO 13400 protocol, which means that the OBD wire harness can perform diagnostic communication for vehicles through the Internet protocol (IP), the Do IP protocol is composed of multiple parts, each part covers some specific topics and technical requirements, and includes multiple modes such as ISO 13400-1 / 2 / 3 / 4, and the diagnostic and monitoring of the vehicle are realized. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme in the embodiment of the present application, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0027] Figure 1 is a three-dimensional model schematic diagram of the OBD wire harness provided by the first embodiment of the present application.

[0028] Figure 2 is a block diagram of the wired network adaptation device of the OBD wire harness provided by the first embodiment of the present application.

[0029] Figure 3 is a connection schematic diagram of the OBD wire harness provided by the first embodiment of the present application.

[0030] Figure 4 is a circuit diagram of the wired network control module of the OBD wire harness provided by the first embodiment of the present application.

[0031] Figure 5 is a circuit diagram of the voltage conversion module of the OBD wire harness provided by the first embodiment of the present application. Figure 1 .

[0032] Figure 6 is a circuit diagram of the voltage conversion module of the OBD wire harness provided by the first embodiment of the present application. Figure 2 .

[0033] Figure 7 is a circuit diagram of the storage module of the OBD wire harness provided by the first embodiment of the present application.

[0034] Figure 8 is a circuit diagram of the high-frequency suppression module of the OBD wire harness provided by the first embodiment of the present application.

[0035] Figure 9 is a circuit diagram of the electrostatic protection module of the OBD wire harness provided by the first embodiment of the present application.

[0036] Figure 10is the block diagram of the wired network control module of the OBD wire harness provided by the first embodiment of the utility model.

[0037] The drawing mark illustration:

[0038] 100, OBD wire harness;

[0039] 10, input end interface; 20, output end interface; 30, wire;

[0040] 1, wired network adaptation device; 2, OBD processing device; 3, PCB circuit board;

[0041] 11, wired network control module; 12, storage module; 13, high-frequency suppression module; 14, electrostatic protection module; 15, voltage transformation module; 16, power module; 17, front end pin; 18, rear end accommodating cavity; 31, crystal oscillator;

[0042] 111, signal processing module; 112, state switching module.

CONCRETE IMPLEMENTING METHOD

[0043] In order to make the utility model's purpose, technical scheme and advantage more clearly, the following is combined with the drawing and the embodiment, and the utility model is further detailed.The specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0044] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present. The terms "vertical", "horizontal", "left", "right", and similar expressions as used herein are for purposes of description and are not meant to be limiting.

[0045] In the utility model, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0046] In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For ordinary skilled persons in the art, the specific meaning of these terms in the utility model can be understood according to the specific situation.

[0047] In addition, the terms "mounting", "setting", "provided with", "connecting", "connected" should be broadly understood. For example, it can be fixed connection, detachable connection, or integral structure; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0048] Please refer to Figures 1-2 The utility model embodiment provides a kind of OBD wire harness 100, connect vehicle OBD interface and external device, OBD wire harness 100 including output end interface 20 and input end interface 10, wired network adaptation device 1 and OBD processing device 2 are connected on input end interface 10, wired network adaptation device 1 includes wired network control module 11, storage module 12, high frequency suppression module 13, static protection module 14 and voltage transformation module 15;OBD processing device 2 gathers the information received by OBD interface, wired network adaptation device 1 connects the information gathered by OBD processing device 2 to Ethernet network, and is sent to external device by output end interface 20 connection.

[0049] Understandably, OBD processing device 2 gathers the information received by OBD interface, wired network adaptation device 1 connects the information gathered by OBD processing device 2 to Ethernet network, and is sent to external device by output end interface 20 connection, and the traditional OBD-II diagnostic equipment needs special connecting interface and adapter, and by integrating wired network adaptation device 1 into OBD wire harness 100 and connecting with Ethernet, vehicle is more easily connected with smart device, and the device end does not need to be provided with special interface adapted to OBD port, can be connected to external device provided with general usb interface, such as Type-A, Micro-Type-B and USB-Type-C interface, has better compatibility and expansibility, simplifies device connection, supports various standards and protocols, and is convenient for integration with external device;Data transmission is also carried out through Ethernet, which can have higher bandwidth and faster data transmission speed.

[0050] Specifically, OBD processing device 2 is used to process the data and signals obtained after OBD wire harness 100 accesses vehicle OBD interface, decode and analyze the data stream from vehicle electronic control system (ECU), and monitor and diagnose various performance parameters and fault information of vehicle in real time

[0051] Wired network adaptation device 1 supports OBD wire harness 100 to communicate with external diagnostic equipment, such as portable fault detector, computer or even tablet, by connecting Ethernet, so that maintenance personnel can quickly obtain detailed diagnostic report and vehicle historical data.

[0052] The wired network adaptation device 1 comprises a wired network control module 11, a storage module 12, a high-frequency suppression module 13, an electrostatic protection module 14 and a voltage transformation module 15.

[0053] It can be understood that the OBD interface, the input interface 10, the OBD processing device 2, the wired network adaptation device 1 and the output interface 20 are sequentially connected, and the wired network adaptation device 1 can provide a stable and high-speed data transmission channel and can transmit data to an external device or a remote server in a short time for further analysis and processing.

[0054] Specifically, referring to Figures 3-5 , the OBD wire harness 100 provided by the embodiment of the utility model adopts a USB2.0 Ethernet controller chip to provide the control function of the wired network control module 11, the Ethernet controller chip connects the device to an Ethernet network through a USB interface, provides a network connection function, can rapidly process network data packets, ensures the smoothness and efficiency of data transmission, supports various network protocols such as TCP / IP and UDP, so that the device can easily realize the interconnection with the Internet, carries out data exchange and remote access.

[0055] In the wired network control module 11, SPEED_LED and LINK_LED indicate the network connection state, SPISD I and SPI SDO are the data input and output of the SPI bus, CONUSB_DP and CONUSB_DM are USB data positive and negative lines.

[0056] Referring to Figure 7 , the storage module 12 adopts a one-time programmable memory, and the data stored in the nonvolatile memory will not be lost even in the case of power off, so that the data can be reliably and repeatedly read.

[0057] Referring to Figure 8 , in order to effectively filter high-frequency signals, a small capacitor or a high-frequency capacitor is used to realize the function of high-frequency suppression, the high-frequency suppression module 13 provided by the utility model utilizes a plurality of bypass capacitor combinations with a capacitance value of 0.1uF, such as C9, C10, C11, C12, C13, C14, to provide a low-impedance path to short-circuit high-frequency noise, decoupling filtering, filter out high-frequency noise, and stabilize the power supply voltage or signal line.

[0058] Referring to Figure 9 , the electrostatic protection module 14 adopts a transient suppression diode, protects the circuit from damage caused by electrostatic discharge and other transient overvoltage events, and the ESD protection diode can rapidly conduct to guide high voltage or high current to the ground, thereby protecting sensitive electronic components from damage.

[0059] Specifically, in order to prevent external electrostatic interference, the electrostatic protection module 14 is connected to the data pins CONUSB_DP and CONUSB_DM of the wired network control module 11 to protect data transmission from electrostatic shock.

[0060] The voltage conversion module 15 includes an Ethernet voltage conversion regulator as shown in the circuit diagram, which couples the signal level on the Ethernet transmission line to ensure that the signal can be correctly transmitted to the receiving end. Figure 5 The transformer repairs the waveform through its internal coil and magnetic core structure to meet the data transmission rate requirements of Ethernet communication, and the voltage conversion regulator can also provide isolation and signal regulation to provide the required stable voltage for each module in the wired network adapter 1 to support the normal operation of the entire wired network adapter 1.

[0061] Further, the voltage conversion module 15 also includes an overvoltage protector as shown in the circuit diagram, which has an overvoltage protection function. Figure 6 When the input voltage exceeds the set threshold, the overvoltage protector will automatically cut off the output to protect the load from damage caused by excessive voltage. Figure 6

[0062] In combination with Figures 5-6 The voltage conversion module 15 connects the Ethernet transmission line with the internal circuit, and the overvoltage protector can also be used in cooperation with the electrostatic protection module 14 to provide more comprehensive circuit protection.

[0063] Preferably, the voltage conversion module 15 can also include a DC-DC converter to stabilize the input voltage to a lower output voltage, which can maintain a small voltage difference, i.e. voltage drop, between the input voltage and the output voltage, so that the predetermined voltage can still be stably output under a small voltage difference

[0064] Further, in order to realize more efficient data transmission of the wired network adapter 1, the wired network adapter 1 can also include an adaptive transmission module and a bandwidth management module.

[0065] Specifically, the OBD harness 100 provided by the embodiment of the utility model supports a network speed bandwidth in the range of 10M to 100M and supports a network adaptive function, and the OBD harness 100 can automatically adjust the data transmission rate according to the actual demand of the connected device and the network environment, ensuring the efficiency and stability of data transmission.

[0066] Further, the input end interface 10 includes a front end pin 17 and a rear end accommodating cavity 18, and the rear end accommodating cavity 18 is provided with a PCB circuit board 3, and the wired network adapter 1 and the OBD processing device 2 are arranged on the PCB circuit board 3.

[0067] ​It can be understood that the front end pin 17 and the rear end accommodating cavity 18 separate the interface part from the circuit part, and the functional modules are arranged on the PCB circuit board 3 at the rear end, thereby saving space, avoiding external interference, and enhancing stability.

[0068] Further, the output interface 20 includes Type-A, Micro Type-B, and USB Type-C interfaces.

[0069] It can be understood that the output interface 20 types include standard USB interfaces commonly seen on the market, indicating that the output end can access a variety of devices and different types of connections, and has high compatibility and flexibility.

[0070] Further, the storage module 12 includes a communication interface, and the storage module 12 is in communication connection with the wired network control module 11 through the communication interface.

[0071] In the embodiment, the pin SI (pin 5) is an SPI input data pin, that is, a communication interface pin.

[0072] It can be understood that the communication interface includes a synchronous serial communication protocol, which is used for data exchange between a master device and one or more slave devices, that is, data exchange between the wired network control module 11 as the master device and the storage module 12 as the slave device in the embodiment, which is suitable for real-time operation scenarios, so that the hardware connection is simple, the interface complexity is reduced, and the correct transmission and access of data are ensured.

[0073] Further, the wired network control module 11 further includes a signal processing module 111.

[0074] It can be understood that the signal processing module 111 effectively reduces noise interference and signal attenuation in the data transmission process, and further improves the accuracy and reliability of data transmission.

[0075] Specifically, the signal processing module 111 is built-in with an error correction mechanism, which can automatically detect, filter and correct transmission errors, and ensure the integrity of data.

[0076] Further, the signal processing module 111 is further built-in with a cross-detection automatic correction mechanism.

[0077] The OBD system not only monitors sensor data related to engine performance and vehicle driving, but also interacts with the vehicle's emission control system, such as catalytic converters, particulate traps, etc., to record real-time vehicle emission data, and the cross-detection automatic correction mechanism verifies whether the vehicle control system and the emission system work as expected, analyzes a large amount of vehicle operation data, and adjusts itself to adapt to changes in vehicle operating conditions.

[0078] Further, the wired network adaptation device 1 is additionally provided with a signal processing device, which is small in size and has functions of power management, signal adjustment and electrical protection.

[0079] Further, the wired network control module 11 further comprises a state switching module 112.

[0080] It can be understood that when the wired network control module 11 is not in a working state, the state switching module 112 switches the wired network control module 11 to a low-power state, i.e. a power-off or disconnection mode, to save power, and when there is network data transmission, the wired network control module 11 is triggered to wake up from the sleep state.

[0081] Further, referring to Figure 1 , the PCB circuit board 3 further comprises a crystal oscillator 31, and the wired network control module 11 comprises a crystal oscillator 31 input end and a crystal oscillator 31 output end, one electrode of the crystal oscillator 31 is connected to the crystal oscillator 31 input end and connected to the wired network control module 11, and one electrode of the crystal oscillator 31 is connected to the crystal oscillator 31 output end to output a clock signal.

[0082] It can be understood that the OBD wire harness 100 provided by the utility model is provided with a 25Hz crystal oscillator for generating a clock signal, and the mechanical vibration of the crystal is used to generate a stable frequency electrical signal to provide a basic stable clock signal for the wired network control module 11.

[0083] Further, the OBD wire harness 100 further comprises a wire 30, and the output end interface 20 and the input end interface 10 are arranged at two ends of the wire 30.

[0084] Specifically, the wire 30 is made of high-quality insulating material, and the two ends of the wire 30 are respectively provided with the input end interface 10 and the output end interface 20, the input end interface 10 is connected to the OBD interface of the vehicle, receives signals and data from the vehicle-mounted system, and the output end interface 20 is connected to external devices to transmit data and diagnosis results of the vehicle-mounted system to the external devices.

[0085] Further, the wired network adaptation device 1 further comprises a power module 16, and the power module 16 is connected with the wired network control module 11, the storage module 12 and the high-frequency suppression module 13 respectively.

[0086] Specifically, the power module 16 provides the wired network control module 11, the storage module 12 and the high-frequency suppression module 13 with power supplies of 3.31V, 1.01V and 5.1V respectively, for driving different circuits and modules.

[0087] Further, the wired network control module 11 supports the Do IP protocol.

[0088] It can be understood that the Do IP protocol is based on an IP network, is easily integrated with existing IT infrastructure, supports interoperability between a plurality of devices and systems, and is a protocol for automotive diagnostic communication that allows diagnostic operations to be performed through an IP network, such as Ethernet, which provides a higher data transmission rate than a CAN bus.

[0089] Specifically, the Do IP protocol is mainly included in the ISO 13400 series, including ISO 13400-1, ISO 13400-2, ISO 13400-3, and ISO 13400-4 modes.

[0090] The OBD wire harness 100 device provided by the utility model supports offline wire measurement, and when the wire 30 is tested, the original wire 30 needs to be disconnected from the access device, otherwise the device is easy to burn out; the charging input voltage is USB-5V, the working current is <200mA, the working temperature is -20~70 DEG C, the storage temperature is -40~85 DEG C, the working humidity is 10%~90%, and the storage humidity is <80%.

[0091] Compared with the prior art, the OBD wire harness provided by the utility model has the following advantages:

[0092] 1、The OBD wire harness provided in the utility model embodiment, the OBD processing device collects information received by the OBD interface, the wired network adaptation device connects the information collected by the OBD processing device to the Ethernet network, and sends the information to the external device through the output interface connection, the traditional OBD-II diagnostic device needs a special connection interface and an adapter, and the wired network adaptation device is integrated into the OBD wire harness to be connected with the Ethernet, so that the vehicle is more easily connected with the intelligent device, the device end does not need to be specially provided with an OBD port, and can be connected to the external device provided with a general USB interface, has better compatibility and expansibility, simplifies device connection, supports various standards and protocols, and is convenient for integration with the external device, and data transmission through the Ethernet also has higher bandwidth and faster data transmission speed.

[0093] 2、The OBD wire harness provided in the utility model embodiment, the front end pin is a channel connected with the OBD interface of the vehicle, allows the input and output of vehicle monitoring signals or data, and the rear end accommodating cavity provides protection and support for the PCB circuit board, and ensures that the elements on the PCB circuit board can normally work.

[0094] 3. The OBD wire harness provided by the embodiment of the utility model, converts the network cable interface connected with the traditional OBD wire harness into USB, integrates the wired network adaptation device into the OBD wire harness to adapt to more extensive external device connection, and the OBD wire harness supports the USB protocol of USB2.0 or USB1.1.

[0095] 4. The OBD wire harness provided by the embodiment of the utility model, the storage module stores data such as firmware, operating system and configuration file, and the storage module communicates with the wired network control module through the communication interface and transmits the stored data information to the wired network control module.

[0096] 5. The OBD wire harness provided by the embodiment of the utility model, the wired network control module internally supports functions such as signal filtering, error detection and transmission optimization, these functions are provided by the signal processing module, and the signal processing module also supports automatic correction and adjustment of cross detection and network adaptation.

[0097] 6. The OBD wire harness provided by the embodiment of the utility model, when the OBD wire harness is not in the working state, the state switching module switches the wired network control module to the low-power state, and when the network data packet arrives, it can trigger the wired network control module to wake up from the low-power state, pull down the voltage of the wired network control module, and the low level trigger, the wired network control module can wake up from the standby mode or the low-power mode, and prepare to restore normal operation.

[0098] 7. The OBD wire harness provided by the embodiment of the utility model, the crystal oscillator provides a basic stable clock signal for the wired network control module, which is used for clock synchronization of various modules in the device, including clock synchronization of key functions such as Ethernet communication, data transmission and network processing, to ensure that the wired network adaptation device can operate according to the predetermined time sequence.

[0099] 8. The OBD wire harness provided by the embodiment of the utility model, the wire provides communication and physical connection between the input end and the output end, conducts signals and power, ensures the reliability of the connection between the input end and the output end, must have good environmental adaptability, and ensures the normal operation of the electrical system.

[0100] 9. The OBD wire harness provided by the embodiment of the utility model, the power module provides power for modules of different types and different functions, and the power module can output power of multiple voltage values.

[0101] 10. The OBD wire harness provided in the embodiment of the utility model, Do IP protocol is SO 13400 protocol, represent OBD wire harness can pass through internet protocol (IP) for vehicle diagnosis communication, Do IP protocol is composed of multiple parts, each part covers some specific subject and technical requirement, including ISO 13400-1 / 2 / 3 / 4 and multiple modes, realize the diagnosis and monitoring of vehicle.

[0102] The above only is the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement within the principle of the utility model should be contained in the protection scope of the utility model.

Claims

1. An OBD harness connecting a vehicle OBD interface with an external device, characterized by: The OBD wire harness comprises an output interface and an input interface, the input interface is connected with a wired network adapter and an OBD processing device, the wired network adapter comprises a wired network control module, a storage module, a high-frequency suppression module, an electrostatic protection module and a voltage transformation module; The OBD processing device collects information received by the OBD interface, the wired network adapter connects the information collected by the OBD processing device to an Ethernet network, and sends the information to the external device through the output interface.

2. The OBD wiring harness of claim 1, wherein: The input interface comprises a front end pin and a rear end accommodating cavity, a PCB circuit board is arranged in the rear end accommodating cavity, and the wired network adapter and the OBD processing device are arranged on the PCB circuit board.

3. The OBD wiring harness of claim 1, wherein: The output interface comprises a Type-A, Micro Type-B and USB Type-C interface.

4. The OBD wiring harness of claim 1, wherein: The storage module comprises a communication interface, and the storage module is communicatively connected with the wired network control module through the communication interface.

5. The OBD wiring harness of claim 1, wherein: The wired network control module further comprises a signal processing module.

6. The OBD wiring harness of claim 5, wherein: The wired network control module further comprises a state switching module.

7. The OBD wiring harness of claim 2, wherein: The PCB circuit board further comprises a crystal oscillator, the wired network control module comprises a crystal oscillator input end and a crystal oscillator output end, one electrode of the crystal oscillator is connected to the crystal oscillator input end and connected to the wired network control module, and one electrode of the crystal oscillator is connected to the crystal oscillator output end to output a clock signal.

8. The OBD wiring harness of claim 1, wherein: The OBD wire harness further comprises a wire, and the output interface and the input interface are arranged at two ends of the wire.

9. The OBD wiring harness of claim 1, wherein: The wired network adapter further comprises a power module, and the power module is connected with the wired network control module, the storage module and the high-frequency suppression module.

10. The OBD wiring harness of claim 1, wherein: The wired network control module supports DoIP protocol.

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