CN214959610U - CAN bus safety detection device of intelligent network connection vehicle - Google Patents

Abstract

The utility model relates to a CAN bus safety inspection device of intelligent internet connection, including vehicle detection room, pseudo-base station module, safety inspection evaluation module, the vehicle detection room is the closed cover body of splicing by the electromagnetic shield body, safety inspection evaluation module includes input/output unit, central control unit and display element, safety inspection evaluation module locates the lateral surface of vehicle detection room and is connected with pseudo-base station module electricity, safety inspection evaluation module still passes through the OBD data line the electromagnetic shield body is connected into in the vehicle detection room, the OBD data line is by the cladding of electromagnetic shield material, the tip of OBD data line is equipped with the OBD joint with CAN bus connection; and a double-roller chassis dynamometer which enables the intelligent internet vehicle to simulate a starting power state is further arranged in the closed cover body of the vehicle detection chamber. The application provides a can detect through the OBD data line, also can the wireless communication detect's safety inspection device, provide different detection mode for the vehicle.

Description

CAN bus safety detection device of intelligent network connection vehicle

Technical Field

The utility model relates to a car data safety inspection field, especially a CAN bus safety inspection device of intelligent networking car.

Background

With the continuous progress of network communication technology, especially the development of 5G communication technology, the networking degree of automobiles is also continuously improved. People realize more control over automobiles by means of various network communication technologies, such as navigation positioning, three-party communication of 'car, person and road' and the like. The development of the intelligent networked automobile brings various conveniences to people's life, but the potential safety hazard that the automobile is easily attacked remotely and controlled maliciously is exposed, and even the networked automobile is controlled in a large batch, which causes great risks of major social events.

The relatively closed network environment inside the automobile seems to be safe, but many security gaps exist, such as a tire pressure monitoring system, Wi-Fi, bluetooth and other short-distance communication devices, which can be attacked. The vehicle-mounted network communication protocol has weak safety protection measures, for example, because CAN and LIN are applied to a relatively closed environment, the computing capacity of a sensor is limited, the adopted safety protection measures are weak, more confidentiality protection actions are not performed except simple verification, and attacks such as targeted sensor information acquisition, attack message construction, message protocol analysis, message replay and the like of an attacker cannot be resisted. The ECU units in the vehicle are connected through CAN, LIN and other networks, if a hacker attacks the network in the vehicle, the ECU CAN be controlled at will, or a CAN bus fails by sending a large number of error messages, so that the ECU fails. Therefore, the network transmission safety in the vehicle is extremely important.

The CAN is called Controller Area Network, namely a Controller Area Network, and the CAN bus test technology comprises intrusion detection, and specifically comprises the following steps: the bus analysis equipment is connected with a vehicle bus through an OBD interface, automatic identification is carried out according to the bus baud rate in information collection (the baud rate of the CAN bus is generally 500kbps), and CAN bus data are read; starting a power device of the vehicle, observing the change of the ID of the corresponding data packet by controlling all functions (such as opening and closing a vehicle door, opening and closing a vehicle lamp, an accelerator, braking, steering, a gear, an air conditioner, a windshield wiper, a loudspeaker and the like) of the vehicle body, power, entertainment information and the like in a static state of the vehicle, and recording the data packet; and playing back the recorded vehicle action data packet to the CAN bus through the CAN bus flow analysis tool.

The existing vehicle detection device needs to detect wireless communication, and often comprises a vehicle detection chamber made of electromagnetic shielding materials for testing the intrusion test of a pseudo base station, wherein the vehicle detection chamber is used for isolating a to-be-detected area of a vehicle from the outside. However, the detection chambers are often high in requirements on volume and shielding technology, and the CAN bus detection needs an external connection terminal, which affects the shielding effect of the vehicle detection chamber, so that the general CAN bus detection and the wireless communication detection cannot be performed simultaneously, and the CAN bus detection and the wireless communication detection are often performed in the shielding chamber after the CAN detection is performed. Therefore, it is necessary to develop a safety detection device capable of performing CAN bus detection and simultaneously realizing wireless communication detection.

OBD, known collectively as On Board Diagnostics, is a vehicle-mounted automatic diagnostic system. The system can monitor the working conditions of the engine electric control system and other functional modules of the vehicle in real time in the running process of the vehicle, and if the working condition is found to be abnormal, the specific fault is judged according to a specific algorithm, and a fault code is diagnosed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem, the utility model provides a CAN carry out CAN bus and detect, also CAN realize the safety inspection device that wireless communication detected simultaneously.

In order to achieve the above purpose, the technical scheme of the utility model has:

a CAN bus safety detection device of an intelligent internet vehicle comprises a vehicle detection chamber, a pseudo base station module and a safety detection evaluation module, wherein the vehicle detection chamber is a closed cover body formed by splicing electromagnetic shields, the safety detection evaluation module comprises an input and output unit, a central control unit and a display unit, the safety detection evaluation module is embedded on the outer side surface of the vehicle detection chamber and is electrically connected with the pseudo base station module, the safety detection evaluation module further penetrates through the electromagnetic shields through OBD data lines and is connected into the vehicle detection chamber, the OBD data lines are coated by electromagnetic shielding materials, and the end parts of the OBD data lines are provided with OBD connectors connected with the CAN bus; and a double-roller chassis dynamometer which enables the intelligent internet vehicle to simulate a starting power state is further arranged in the closed cover body of the vehicle detection chamber.

In this application, CAN bus safety inspection device major structure of intelligent networking car includes vehicle detection room, pseudo-base station module, safety inspection evaluation module, in order to make the detection accurate and not disturbed, the CAN bus safety inspection of intelligent networking car needs go on under a confined environment, the vehicle detection room is an enclosure space, and the vehicle setting is in the enclosure space. The vehicle is stopped on the double-roller chassis dynamometer, a power device of the vehicle is started, and the vehicle combination is detected under the condition that wheels of the vehicle are in motion under the static state. When the CAN bus of the intelligent network connection vehicle is detected safely in a wireless mode, the pseudo base station module is positioned in the vehicle detection chamber, the pseudo base station module is connected with the intelligent network connection vehicle and sends a detection signal to the intelligent network connection vehicle, and detection information of the pseudo base station module is displayed through a safety detection evaluation module positioned outside the vehicle detection chamber; when detecting the CAN bus safety of intelligent networking through wired mode, pass through the OBD data line electromagnetic shield body connects and goes into in the vehicle detects indoorly, with the OBD articulate of CAN bus connection CAN, its detection information shows through being located the outdoor safety inspection evaluation module of vehicle detection. The utility model provides a can carry out wired detection through the OBD data line, also can realize the safety inspection device that wireless communication detected, for the vehicle provides different detection methods or dual detection mode, improved the efficiency that detects and provided convenience to ensure the security performance of automobile driving and whole intelligent transportation network.

Optionally, the lifting device is further included, and acts on the vehicle detection chamber, so that the vehicle detection chamber can be moved up and down in the vertical direction, the lifting device includes at least two hydraulic lifting columns, each hydraulic lifting column is provided with an up-down lifting rod controlled by a hydraulic lifter, and the lifting platform rod is connected with the vehicle detection chamber and used for lifting the vehicle detection chamber. The lifting device is used for controlling the up-and-down movement of the vehicle detection chamber to enable the vehicle detection chamber and the detection vehicle to form a more closed space, the T-BOX safety detection device does not need to be provided with a door due to the arrangement of the lifting device, the door gap generated by the door is avoided, the closed effect of the T-BOX safety detection device is further influenced, the detection is more accurate due to the arrangement of the lifting device, and the detection error is reduced.

Optionally, the dual-drum chassis dynamometer comprises a drum and a base, the drum is provided with a plurality of drums and is rotatably mounted on the base, wheels of the intelligent networked vehicle are in contact with the drum, and when the wheels rotate, the vehicle keeps a static state. A plurality of rollers are arranged below each wheel, and the vehicle for inspecting moves on the rollers and is static relative to the base, so that the vehicle is specifically inspected.

Optionally, the electromagnetic shield includes a first splicing module and a conductive gasket, a plurality of the first splicing modules are spliced and fixed to form the multi-face shell structure of the sealed space, and the conductive gasket is clamped and fixed between the two spliced first splicing modules; the electromagnetic shield body is externally provided with a reinforced panel in a nested manner, the reinforced panel comprises a plurality of second splicing modules, and the second splicing modules are spliced to form a multi-surface shell structure which is the same as the electromagnetic shield body. The electromagnetic shield body adopts first concatenation module concatenation to form, and it adopts the concatenation of second concatenation module to form to strengthen the panel, and first concatenation module and second concatenation module can be processed alone in the mill to assemble fast at the job site, the concatenation department pad of first concatenation module has electrically conductive liner simultaneously, makes first concatenation module can normally electrically conduct, and the function of electromagnetic shield body's electromagnetic shield can normally work.

Optionally, the first splicing modules are provided with splicing plates at edges thereof, the splicing plates are provided with through holes for bolt connection, the through holes on the splicing plates of the two mutually spliced first splicing modules correspond to each other, the two first splicing modules are spliced through bolt connection and/or welding, and the conductive pads are clamped and fixed.

Optionally, the first splicing module is made of a cold-rolled steel plate, the thickness of the first splicing module is 2 to 3 millimeters, and the thickness of the first splicing module arranged on the bottom surface is thicker than the thickness of the first splicing module arranged on the top surface and the side surface.

Optionally, the second concatenation module is multilayer structure, and it is by outer plywood, damping plate and the inner plating of including to the interior, outer plywood adopts thickness to make for 2 millimeters cold-rolled steel sheet at least, the inner plating adopts thickness to make for 1.2 millimeters galvanized steel sheet or thickness to make for 3 millimeters cold-rolled steel sheet at least, sets up on the bottom surface the thickness of the inner plating of second concatenation module is thick in the thickness of the inner plating that sets up on top surface and side.

Optionally, the edge of the second splicing module is provided with a splicing part, and the splicing part is in a multi-stage step shape. Form the step-like gap behind the concatenation module of this concatenation portion concatenation second, can improve the shielding effect to external.

Optionally, the splicing module further comprises a quick-connection bolt, a quick-connection hole is formed in the splicing part, the quick-connection bolt and the quick-connection hole are matched to splice the second splicing module, and the splicing parts are stacked mutually.

Drawings

FIG. 1 is a schematic structural diagram of a safety inspection device according to the present invention;

fig. 2 is a front view of the lifting device of the present invention;

FIG. 3 is a cross-sectional view of the dual drum chassis dynamometer of the present invention;

fig. 4 is a cross-sectional view of the electromagnetic shield according to the present invention;

fig. 5 is a cross-sectional view of a second mosaic module of the present invention;

fig. 6 is the utility model discloses a concatenation department cross-sectional view of second concatenation module.

Detailed Description

The utility model discloses a CAN bus safety inspection device of intelligent networking car is explained with the attached drawing.

The embodiment provides a CAN bus safety detection device of an intelligent internet vehicle, which comprises a vehicle detection chamber 3, a pseudo base station module 4 and a safety detection evaluation module 5, wherein the vehicle detection chamber 3 is a closed cover body formed by splicing electromagnetic shields 1, the safety detection evaluation module 5 comprises an input/output unit, a central control unit and a display unit, the safety detection evaluation module 5 is embedded in the outer side surface of the vehicle detection chamber 3 and is electrically connected with the pseudo base station module 4, the safety detection evaluation module 5 further penetrates through the electromagnetic shields through OBD data lines 8 to be connected into the vehicle detection chamber 3, the OBD data lines 8 are coated by electromagnetic shielding materials, and the end parts of the OBD data lines 8 are provided with OBD connectors 81 connected with the CAN bus; and a double-drum chassis dynamometer 7 for enabling the intelligent internet vehicle to simulate a starting power state is further arranged in the closed cover body of the vehicle detection chamber 3.

Further, the present embodiment further includes a lifting device 6, where the lifting device 6 acts on the vehicle detection chamber 3, so that the vehicle detection chamber 3 can be moved up and down in the vertical direction to cover the smart internet vehicle or the T-BOX module of the smart internet vehicle. The lifting device 6 is the same as a conventional lifting device and used for lifting objects, the lifting device 6 is used for controlling the up-and-down movement of the vehicle detection chamber 3 to enable the vehicle detection chamber and the detection vehicle to form a more closed space, the T-BOX safety detection device does not need to be provided with a door due to the arrangement of the lifting device 6, the door seam is prevented from being formed when the door is arranged, the closed effect of the T-BOX safety detection device is further influenced, the detection is more accurate due to the arrangement of the lifting device 6, and the detection error is reduced.

It should be noted that the dual-drum chassis dynamometer and the lifting device are existing structures or devices, and are not the invention point of the patent.

Further, the dual-drum chassis dynamometer 7 of the embodiment includes a drum 71 and a base 72, the drum 71 is provided with a plurality of drums 71 and is rotatably mounted on the base 72, wheels of the intelligent networked vehicle are in contact with the drum 71, and when the wheels rotate, the vehicle keeps a static state. A plurality of rollers 71 are arranged below each wheel, and the vehicle inspection vehicle moves on the rollers 71 and is static relative to the base 72, so that the vehicle is specifically inspected.

Further, the electromagnetic shield 1 of this embodiment includes a first splicing module 11 and a conductive gasket 12, a plurality of the first splicing modules 11 are spliced and fixed to form the multi-face shell structure of the sealed space, and the conductive gasket 12 is clamped and fixed between the two spliced first splicing modules 11; the electromagnetic shield 1 is provided with the intensive panel 2 with nesting outward, the intensive panel 2 includes second concatenation module 25, and is a plurality of second concatenation module 25 amalgamation form with the multiaspect shell structure that the electromagnetic shield is the same. Electromagnetic shield 1 adopts first concatenation module 11 concatenation to form, and it forms to strengthen panel 2 and adopts the concatenation of second concatenation module 25 piece, and first concatenation module 11 and second concatenation module 25 can independently process in the mill to assemble fast at the job site, simultaneously pad at the concatenation department of first concatenation module 11 has electrically conductive liner 12, make first concatenation module 11 normally electrically conductive, and the function of the electromagnetic shield of electromagnetic shield 1 can normally work.

Further, in this embodiment, the first splicing modules 11 are provided with splicing plates at edges thereof, the splicing plates are provided with through holes for bolt connection, the through holes on the splicing plates of the two first splicing modules 11 spliced with each other correspond to each other, the two first splicing modules 11 are spliced by bolt connection and/or welding, and the conductive pads 12 are clamped and fixed. The electromagnetic shielding body 1 is assembled on site quickly in a bolt and/or welding mode.

Further, in this embodiment, the first splicing module 11 is made of a cold-rolled steel plate, the thickness of the first splicing module 11 is 2 to 3 mm, and the thickness of the first splicing module 11 disposed on the bottom surface is thicker than the thickness of the first splicing module 11 disposed on the top surface and the side surface.

Further, the second splicing module 25 of the present embodiment is a multi-layer structure, and includes an outer plate 21, a damping plate 22 and an inner plate 24 from outside to inside, the outer plate 21 is made of a cold-rolled steel plate with a thickness of at least 2 mm, and the inner plate 24 is made of a galvanized steel plate with a thickness of at least 1.2 mm or a cold-rolled steel plate with a thickness of at least 3 mm. The thickness of the inner panel 24 of the second mosaic module 25 disposed on the bottom surface is thicker than the thickness of the inner panel 24 disposed on the top and side surfaces.

Further, in this embodiment, the edge of the second splicing module 25 is provided with a splicing portion 251, and the splicing portion 251 is in a multi-stage step shape. Step-shaped gaps are formed after the second splicing modules 25 are spliced through the splicing parts 251, and the shielding effect to the outside can be improved.

Further, this embodiment further includes the quick-connect bolt 25, is equipped with the quick-connect hole on the concatenation portion 251, the quick-connect bolt 25 and the quick-connect hole cooperate the concatenation second concatenation module 25 to make the concatenation portion 251 pile up each other. An embodiment of a quick splice second splice module 25 is provided.

The CAN bus safety detection device main structure of the intelligent network connection vehicle comprises a vehicle detection chamber 3, a pseudo base station module 4 and a safety detection evaluation module 5, in order to enable detection to be accurate and not to be interfered, the CAN bus safety detection of the intelligent network connection vehicle needs to be carried out in a closed environment, the vehicle detection chamber is a closed space, and the vehicle is arranged in the closed space. The bus analysis equipment is connected with a vehicle bus through an OBD interface, automatic identification is carried out according to the bus baud rate in information collection (the baud rate of the CAN bus is generally 500kbps), and CAN bus data are read; starting a power device of the vehicle, observing the change of the ID of the corresponding data packet by controlling all functions (such as opening and closing a vehicle door, opening and closing a vehicle lamp, an accelerator, braking, steering, a gear, an air conditioner, a windshield wiper, a loudspeaker and the like) of the vehicle body, power, entertainment information and the like in a static state of the vehicle, and recording the data packet; and playing back the recorded vehicle action data packet to the CAN bus through the CAN bus flow analysis tool.

When the CAN bus of the intelligent network connection vehicle is detected safely in a wireless mode, the pseudo base station module 4 is positioned in the vehicle detection chamber 3, the pseudo base station module 4 is connected with the intelligent network connection vehicle and sends a detection signal to the intelligent network connection vehicle, and detection information of the pseudo base station module 4 is displayed through a safety detection evaluation module 5 positioned outside the vehicle detection chamber 3; when detecting the CAN bus safety of intelligent networking through wired mode, pass through OBD data line 8 the electromagnetic shield body 1 is connected into in the vehicle detection room 3, with the OBD joint 81 of CAN bus connection connect CAN, its detected information shows through being located the vehicle detection room 3 outer safety inspection evaluation module 5. The utility model provides a CAN carry out CAN bus detection through the OBD data line, also CAN realize the safety inspection device that wireless communication detected simultaneously, for the vehicle provides different detection methods or dual detection methods, improved the efficiency that detects and provided convenience to guarantee the security performance of automobile driving and whole intelligent transportation network.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims (9)

1. The CAN bus safety detection device of the intelligent internet vehicle is characterized by comprising a vehicle detection chamber, a pseudo base station module and a safety detection evaluation module, wherein the vehicle detection chamber is a closed cover body spliced by an electromagnetic shielding body, the safety detection evaluation module comprises an input/output unit, a central control unit and a display unit, the safety detection evaluation module is embedded in the outer side surface of the vehicle detection chamber and is electrically connected with the pseudo base station module, the safety detection evaluation module further penetrates through the electromagnetic shielding body through an OBD data line and is connected into the vehicle detection chamber, the OBD data line is coated by an electromagnetic shielding material, and the end part of the OBD data line is provided with an OBD joint connected with the CAN bus; and a double-roller chassis dynamometer which enables the intelligent internet vehicle to simulate a starting power state is further arranged in the closed cover body of the vehicle detection chamber.

2. The CAN bus security detection apparatus of claim 1, further comprising a lifting device acting on the vehicle detection chamber such that the vehicle detection chamber CAN be moved vertically up and down, wherein the lifting device comprises at least two hydraulic lifting columns, each of the hydraulic lifting columns is oppositely provided with an up-down lifting rod controlled by a hydraulic lifter, and the lifting rod is connected with the vehicle detection chamber to lift the vehicle detection chamber.

3. The CAN bus security sensor of claim 1, wherein the dual drum chassis dynamometer comprises a plurality of drums rotatably mounted on a base, and a smart networked vehicle having wheels in contact with the drums, the vehicle remaining stationary while the wheels rotate.

4. The CAN bus security detection apparatus of claim 1, wherein the electromagnetic shield comprises a first splice module and a conductive gasket, a plurality of the first splice modules are spliced and fixed to form the multi-sided shell structure of the sealed space, and the conductive gasket is clamped and fixed between the two spliced first splice modules; the electromagnetic shield body is externally provided with a reinforced panel in a nested manner, the reinforced panel comprises a plurality of second splicing modules, and the second splicing modules are spliced to form a multi-surface shell structure which is the same as the electromagnetic shield body.

5. The CAN bus safety detection device of claim 4, wherein the first splicing modules are provided with splicing plates at edges thereof, the splicing plates are provided with through holes for bolt connection, the through holes of the splicing plates of the two first splicing modules spliced with each other correspond to each other, the two first splicing modules are spliced with each other by bolt connection and/or welding, and the conductive gasket is clamped and fixed.

6. The CAN bus security detection apparatus of claim 5, wherein the first splicing module is made of cold-rolled steel plate, the thickness of the first splicing module is 2 to 3 mm, and the thickness of the first splicing module disposed on the bottom surface is thicker than the thickness of the first splicing module disposed on the top surface and the side surface.

7. The CAN bus safety detecting device of claim 4, wherein the second splicing module is a multi-layer structure and comprises an outer plate, a damping plate and an inner plate from outside to inside, the outer plate is made of a cold-rolled steel plate with a thickness of at least 2 mm, the inner plate is made of a galvanized steel plate with a thickness of at least 1.2 mm or a cold-rolled steel plate with a thickness of at least 3 mm, and the thickness of the inner plate of the second splicing module arranged on the bottom surface is thicker than the thickness of the inner plate arranged on the top surface and the side surface.

8. The CAN bus safety detection device of claim 4, wherein the edge of the second splicing module is provided with a splicing part, and the splicing part is in a multi-stage step shape.

9. The CAN bus safety detection device of claim 4, further comprising a quick-connect bolt, wherein the joint portion is provided with a quick-connect hole, and the quick-connect bolt and the quick-connect hole are matched to splice the second splicing module and enable the joint portions to be stacked.

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