TWI392788B - The method used to check the serial number of the data gateway - Google Patents

Description

Method for checking wafer serial number in data gateway

A method of inspecting a wafer serial number, and more particularly to a method of using a data gateway to read a wafer serial number and verify it.

Please refer to FIG. 1, FIG. 2, FIG. A and FIG. 3B simultaneously, which is an authentication system architecture of the prior art that uses the wafer key to start the engine. The authentication system architectures of these prior art are quite similar.

As shown in FIG. 1, when the ignition switch module 2 senses the insertion of a wafer key 1a, or the engine ignition mechanism of the ignition switch module 2a is triggered after the wafer key 1a is inserted, the ignition switch module 2a requests the engine to start the authentication computer 3 for wafer processing. Certification behavior. The central processing unit 31 activates the wireless transceiver 33 to issue a synchronization signal that is wirelessly transmitted via the sensing module 34 connected to the wireless transceiver 33.

The Transponder Chip 11 stores a Transponder ID corresponding to the identification wafer 11 and a Transponder Identification Code. When the identification wafer 11 is within the sensing range of the signal transmission and reception of the sensing module 34, the identification wafer 11 senses the synchronization signal and generates an excitation effect to be driven to transmit the above-described wafer serial number. The wireless transceiver 33 receives the wafer serial number through the sensing module 34 for forwarding to the engine startup authentication computer 3. The CPU 31 outputs a mixed identification code when it is determined that the wafer serial number matches the authentication data stored in the storage unit 32. The hybrid identification code is formed by combining a random code and a cipher code, and transmits the identification chip 11 through the wireless transceiver 33.

The identification chip 11 acquires and parses the hybrid identification code. When it is determined that the hybrid identification code is the data required to identify the wafer 11, the wafer identification code stored in the identification wafer 11 is output. The wireless transceiver 33 receives the chip identification code through the sensing module 34 for transmission to the engine startup authentication computer 3. The engine startup authentication computer 3 will start the engine device when it determines that the chip identification code matches the identification code of the previous authentication data. When the judgment is not met, the engine starts to authenticate the computer 3, that is, the engine device is not allowed to start.

The prior art shown in FIG. 2 is similar to FIG. 1, but the difference is that the wireless transceiver 33 is not integrated into the engine startup authentication computer 3, but is connected to and controlled by the engine startup authentication computer 3, and the wireless transceiver 33 is Engine Start Authentication PC (Universal Asynchronous Receiver/Transmitter; UART), Serial Peripheral Interface Bus (SPI Bus), Regional Internet Bus (Local Interconnect Network Bus) ; LIN Bus) or controller area network bus (CAN Bus) and other architectures are interconnected.

As shown in FIG. 3A and FIG. 3B, the system architecture shown in FIG. 1 and FIG. 2 is different in that the wafer key 1b is a plug-in type wafer key, and the ignition switch module 2b has a card slot for inserting the wafer key 1b.

However, the chip key is not easy to be cracked, but the car thief, such as the original factory or the repair shop personnel, copy or reserve a wafer key before the delivery or repair the vehicle, and the wafer key of the startable vehicle is not given. The owner of the car, the owner will only think that he has the chip key of all the startable vehicles, and can't know from other ways that the car is set with several keys, or whether the wafer key or the backup wafer key on his hand has been Other wafer keys have been replaced. The car thief can steal the vehicle based on its privately copied or reserved wafer key.

Therefore, in the case of a car thief having a pirated wafer key, it is a problem that the manufacturer should consider if only the wafer key possessed by the owner is the wafer key of the legal startable vehicle.

The present invention provides a method of inspecting a wafer serial number applied to a data gateway and identifying only the wafer key owned by the owner as a wafer key of a legally actuatable vehicle.

The technology disclosed in the present invention is a method for inspecting a serial number of a data gateway (Gateway) according to a data reading method for obtaining a wafer serial number. The data reading method can wirelessly sense the wafer. The serial number is obtained from the connection line between an engine-initiated authentication computer and a wireless transceiver included in the automobile chip authentication system. The data gateway verifies whether the wafer serial number is a valid wafer serial number.

The method disclosed in the present invention is applied to a data gateway for inspecting a serial number of a wafer. The data gateway can read the serial number of the wafer key used by the current user at any time, and verify the serial number of the wafer. The serial number of the wafer stored in the data gateway is the wafer key of the owner of the wafer, and the serial number of the wafer stored therein. Even if the car thief owns or uses the pirated wafer key, the wafer serial number of the pirated wafer key must not exist. The data gateway can achieve the effect of identifying the wafer key owned by the owner as the wafer key of the legal startable vehicle. If it can cooperate with the relevant anti-theft device or mechanism, the car thief can not easily steal the car and avoid the financial loss of the owner.

In order to further understand the end point, structural features and functions of the present invention, the related embodiments and drawings are described in detail as follows:

Referring to FIG. 4, FIG. 5A, FIG. 5B, FIG. 6A and FIG. 6B, FIG. 4 is a flow chart for reading data of a data gateway device according to an embodiment of the present invention, and FIG. 5A is a block diagram of a data gateway device 4a according to an embodiment of the present invention. FIG. 5B is a schematic diagram of monitoring the data gateway 4a of the embodiment of the present invention, and FIG. 5C is a second suppression engine of the data gateway 4a according to the embodiment of the present invention. Schematic diagram of device 7 startup. 6A is a block diagram of a data gateway 4b according to an embodiment of the present invention, which is further illustrated by the wafer authentication system of FIG. 2, and FIG. 6B is a second suppression engine device 7 of the data gateway 4b according to the embodiment of the present invention. Start the schematic. In this embodiment, the storage unit 32 of the engine startup authentication computer 3 stores at least one authentication material 50, and each authentication material 50 includes an serial number (ID) 51 and an identification code 52.

As shown in FIG. 5A, the data gateway 4a has a storage module 42, a sensing module 34 and a microcontroller (Micro Controller Unit) 41. The storage module 42 pre-records one or more transponder IDs 421. If the owner owns all the wafer keys of the bootable vehicle and performs the authentication of the data gateway 4 (please be described later), the storage module 42 records The wafer serial number 421 should exactly match the serial number 51 recorded by the storage 32. However, when the person stealing the car privately copies any of the wafer keys, the wafer serial number 421 recorded by the storage module 42 does not exactly match the serial number 51 recorded by the storage unit 32.

The sensing module of the data gateway 4a has a signal transceiver 43, a switch 442 and an induction coil 441 (Excitation Coil). The induction coil 441 has one end connected to the signal transceiver 43 and the other end disposed around the ignition switch module 2a. The switch 442 is disposed on the induction coil 441 and is controlled by the microcontroller 41 to make the induction coil 441 open or open.

As shown in FIG. 6A, the data gateway 4b is different from the data gateway 4a in that it does not include an inductive module, but the microcontroller 41 is directly connected between the wireless transceiver 33 and the engine startup authentication computer 3. Connect the line.

The following describes the data tracker 4a and the data gateway 4b to read the wafer serial number for the verification behavior process:

A wafer serial number is obtained according to a data reading method (step S110). When the ignition switch module 2a knows that the wafer key 1a is inserted, or the engine ignition mechanism of the ignition switch module 2a is triggered after the wafer key 1a is inserted, the ignition switch module 2a notifies the engine to start the authentication computer 3. The central processing unit 31 causes the wireless transceiver 33 to issue a synchronization signal which is sent by the sensing module 34.

When the wafer key 1a enters the signal sensing range of the sensing module 34, the identification wafer 11 senses the synchronization signal and an excitation effect occurs to wirelessly transmit the wafer serial number stored in the wafer key 1.

As shown in FIG. 5B, the microcontroller 41 of the data gateway 4a receives the notification from the ignition switch module 2, and the microcontroller 41 controls the changeover switch 442 to switch so that the induction coil 441 forms a path. The microcontroller 41 and the ignition switch module 2 can be connected by the following means: First, the data gateway 4 is connected to a vehicle network in the vehicle (such as the controller area network 200) to enable the data gateway 4a to pass through. The vehicle network is connected to the ignition switch module 2a. Second, the ignition switch module 2a and the data gateway 4a are directly connected by a physical circuit wiring.

The induction coil 441 of the data gateway 4a senses the wafer serial number transmitted by the identification wafer 11. The wafer serial number sensed by the induction coil 441 is received by the signal transceiver 43 and transmitted to the microcontroller 41.

On the other hand, as shown in FIG. 6B, when the microcontroller 41 of the data gateway 4b receives the notification from the ignition switch module 2b, it according to the data transmission format between the wireless transceiver 33 and the engine activation authentication computer 3 ( Such as UART, SPI Bus, LIN Bus or CAN Bus), to read the transmission data between the wireless transceiver 33 and the engine startup authentication computer 3, to obtain the wafer serial number transmitted by the wireless transceiver 33 to the engine startup authentication computer 3 (its Belongs to the identification chip 11).

The data gateway verifies whether the wafer serial number is legal (step S120). Regardless of the data gateway 4a or the data gateway 4b, the microcontroller 41 matches the obtained wafer serial number with the wafer serial number 421 recorded by the storage module 42. When the matching result is that the wafer serial number matches, the microcontroller 41 That is, no follow-up behavior is performed.

On the other hand, when the authentication data 50 recorded by the engine startup authentication computer 3 is added with a key or a key is deleted, and the data is not consistent with the previously recorded authentication data, the wafer serial number of the identification wafer 11 necessarily does not meet the record recorded by the storage module 42. Any one of the wafer numbers 421 causes the matching result to be non-compliant, and the microcontroller 41 outputs a suppression command to suppress activation of an engine device 7 (step S130).

Here, the determination behavior of the microcontroller 41 determining whether the wafer serial number is the correct data is completed during the process of the identification wafer 11 acquiring the hybrid identification code to the output wafer identification code, so as to preempt the end of the wafer authentication behavior of the engine startup authentication computer 3 carry out. Moreover, the wafer serial number verification operation of the data gateway 4 of the present embodiment does not interfere with the authentication operation of the automotive wafer authentication system, that is, the analysis of the hybrid identification code is still completed between the automotive wafer authentication system and the identification wafer 11 or The comparison operation of the wafer identification code and the identification code 52 is completed.

As shown in FIG. 5B and FIG. 6A, the suppression command issued by the data gateway 4 is an electronic signal, and the electronic signal includes an engine that prohibits the engine computer 61 from starting the engine device 7 or giving the engine to start the authentication computer 3 gear position or stepping on the brake pedal. The necessary conditions for the start of the device 7 are not fully achieved.

The data gateway 4a or the data gateway 4b issues the above-mentioned suppression command before the engine startup authentication computer 3 completes the wafer authentication operation, and the vehicle computer that starts or assists in starting the engine device 7 receives the suppression command, resulting in the vehicle computer. Continuously switching between the startup engine device 7 and the prohibition of the startup engine device 7 for two different operational behaviors, causing the vehicle computer to receive incorrect data and failing to start the engine device 7 to achieve the suppression of the engine device 7 activation. Even if the car thief uses the chip key 1 of the pirated copy to authenticate the computer 3 by the engine, the vehicle cannot be started.

The vehicle computer can be a computer such as an engine start authentication computer 3, an engine computer 61, a gear computer 62, and other vehicle computers 63.

For example, when the suppression command is received by the engine startup authentication computer 3, the engine startup authentication computer 3 cannot command the engine computer 61 to start the engine device 7 because it receives incorrect data. When the suppression command is received by the engine computer 61, the engine computer 61 cannot start the engine device 7 because it received incorrect data. When the suppression command is received by the gear computer 62, the gear computer 62 will provide an incorrect gear value, causing the engine computer to receive incorrect data and fail to start the engine device 7.

In addition, the suppression command is an electronic signal, and does not cause the engine device 7 to switch between the actual start and stop, so that the engine device 7 is not damaged.

However, the manner in which the data gateway 4 transmits the suppression command is as follows: The first type is as shown in FIG. 4 and FIG. 5, and the data gateway 4 is connected to the vehicle network (such as the controller area network 200) to suppress the command system. It is transmitted to the vehicle computer that starts or assists in starting the engine device 7 via the vehicle network.

Referring to FIG. 5C and FIG. 6B, a circuit switching module 611 is disposed on the power supply circuit 71 or the oil supply circuit 72 of the engine device 7, and the data gateway 4a or the data gateway 4b is connected to the circuit switching module 611. When the circuit switching module 611 obtains the suppression command, the power supply circuit 71 or the oil supply circuit 72 of the engine device 7 is made to open, to stop the power supply circuit 71 from supplying power to the engine device 7, or to stop the oil supply circuit 72 from supplying oil to the engine device 7. Thereby, the engine device 7 is inhibited from starting.

Referring to FIG. 7 , FIG. 8A and FIG. 8B , FIG. 7 is a key authentication learning flowchart according to an embodiment of the present invention, FIG. 8A is a schematic diagram of key authentication learning of the data gateway 4 a according to the embodiment of the present invention, and FIG. 8B is a schematic diagram of the present invention. A schematic diagram of key authentication learning of the data gateway 4b of the embodiment. The data gateway 4a or the data gateway 4b receives the user-controlled vehicle to input an authentication learning command, such as the unknown wafer key 9 is inserted into the ignition switch module 2a to initiate the battery power supply state of the vehicle, and within 5 seconds. Step on the pedal three times. The microcontroller 41 switches the data gateway 4a (or the data gateway 4b) to the authentication learning mode upon obtaining the authentication learning command from the vehicle. The following describes the wafer serial number learning method:

According to a data reading method, an unknown chip serial number is obtained (step S210). As shown in FIG. 8A, when the microcontroller 41 obtains the notification of the ignition switch module 2a, the microcontroller 41 controls the switching switch 442 to perform the switching behavior, so that The induction coil 441 forms a passage.

At the same time, when the wafer 91 of the unknown wafer key 9 is excited by the wireless transceiver 33E, the Transponder ID of the unknown wafer key 9 is issued.

The induction coil 441 of the data gateway 4a senses the wafer serial number and is received by the signal transceiver 43 for transfer to the microcontroller 41.

Another mode, as shown in FIG. 8B, when the microcontroller 41 obtains the notification of the ignition switch module 2, according to the data transmission format between the wireless transceiver 33 and the engine startup authentication computer 3 (such as UART, SPI Bus, LIN Bus). Or CAN Bus), in order to read the transmission data between the wireless transceiver 33 and the engine startup authentication computer 3, to obtain the wafer serial number (which belongs to the identification wafer 11) that the wireless transceiver 33 transmits to the engine startup authentication computer 3.

The unknown wafer serial number is stored (step S220). Regardless of the type of the data gateway 4a or the data gateway 4b, the microcontroller 41 records the wafer serial number into the storage module 42 to form the aforementioned wafer serial number 421.

It is judged whether or not the wafer serial number has been learned (step S230). The microcontroller will judge whether to complete the authentication learning mode according to an externally input command or whether the unknown wafer serial number has not been obtained for a long time. When it is judged to be completed, the microcontroller ends the authentication learning mode and returns to the monitoring mode. When it is determined that the processing is not completed, the process returns to step S210 to perform a new round of the wafer serial number learning process.

Referring to FIG. 9A and FIG. 9B simultaneously, the data gateway 4a and the data gateway 4b can be combined with the technical architecture shown in FIG. 3, and the operation principle thereof is the same as the data gateway 4a or the data gate shown in FIG. 5A to FIG. The tracker 4b operates in the same manner and will not be described here.

While the present invention has been described above in terms of the preferred embodiments thereof, it is not intended to limit the invention, and the equivalent of the modification and retouching of the present invention is still within the spirit and scope of the present invention. Within the scope of patent protection of the present invention.

[Prior technology]

1a, 1b. . . Wafer key

11. . . Identification chip

2a, 2b. . . Ignition switch module

3. . . Engine boot authentication computer

31. . . CPU

32. . . Storage

33. . . Wireless transceiver

34. . . Sensor module

[Technical Technology]

4a, 4b. . . Data gateway

41. . . Microcontroller

42. . . Storage module

421. . . Wafer serial number

43. . . Signal transceiver

441. . . Induction coil

442. . . Toggle switch

50. . . Certification information

51. . . Serial number

52. . . Identifier

61. . . Engine computer

611. . . Circuit switching module

62. . . Gear computer

63. . . Other car computers

7. . . Engine equipment

71. . . Power supply circuit

72. . . Oil supply circuit

9. . . Unknown wafer key

91. . . Wafer of unknown wafer key

200. . . Controller area network

Figure 1 is a first example of prior art;

Figure 2 is a second example of prior art;

Figure 3A is a third example of the prior art;

Figure 3B is a fourth example of the prior art;

4 is a flow chart of reading data of a data gateway device according to an embodiment of the present invention;

5A is an example of a block diagram of a data gateway 4a according to an embodiment of the present invention;

5B is a schematic diagram of monitoring of a data gateway 4a according to an embodiment of the present invention;

5C is a schematic diagram showing the startup of the second suppression engine device 7 of the data gateway 4a according to the embodiment of the present invention;

6A is an example of a block diagram of a data gateway 4b according to an embodiment of the present invention;

6B is a schematic diagram of the startup of the second suppression engine device 7 of the data gateway 4b according to the embodiment of the present invention;

7 is a flow chart of key authentication learning according to an embodiment of the present invention;

FIG. 8A is a schematic diagram of key authentication learning of the data gateway 4a according to the embodiment of the present invention; FIG.

FIG. 8B is a schematic diagram of key authentication learning of the data gateway 4b according to the embodiment of the present invention; FIG.

9A is a block diagram showing an example of a data gateway device 4a incorporating a card type wafer key structure according to an embodiment of the present invention;

Fig. 9B is a block diagram showing an example of a data gateway 4b incorporating a card type wafer key structure in accordance with an embodiment of the present invention.

Step S110 to step S130

Claims (20)

A method for checking a serial number of a data gateway for a data gateway is provided for the data gateway disposed in a vehicle, the vehicle comprising an ignition switch module, an induction module and an engine start authentication computer, the engine ignition mechanism Initiating an engine ignition mechanism, causing the sensing module to sense a wafer serial number sent by a wafer key, the engine initiating an authentication computer to authenticate the wafer serial number, the data gateway comprising a microcontroller connected to the ignition switch module, The method includes: when the microcontroller obtains the notification of the ignition switch module, the microcontroller acquires a wafer sent by a wafer key through a signal transceiver in a wireless sensing manner or through a connection line of the engine to activate the authentication computer. And determining, by the microcontroller, whether the wafer serial number matches the recorded serial number to determine whether to output a suppression command. The method of claim 1, wherein the microcontroller transmits the chip serial number sent by the chip key through the signal transceiver, and an induction coil of the signal transceiver senses the wafer key. The serial number of the wafer sent. The method of claim 1, wherein the microcontroller, when the serial number sent by the chip key is obtained by the engine starting the connection line of the authentication computer, is to activate the authentication computer and a wireless transceiver through the engine. The serial connection line obtains the serial number of the chip, wherein the wireless transceiver further includes a signal transceiver disposed in the ignition switch module, The signal transceiver is configured to sense the wafer serial number of the wafer key that activates the ignition switch module. The method of claim 1, wherein when the microcontroller outputs the suppression command, the suppression command is transmitted to an engine device to inhibit the engine device from starting. The method of claim 4, wherein the suppression command is transmitted to a vehicle computer, and the vehicle computer inhibits activation of an engine device according to the suppression command. The method of claim 5, wherein the suppression command is transmitted to the vehicle computer through a controller area network. The method of claim 4, wherein the step of suppressing activation of an engine device causes the power supply circuit of the engine device to form an open circuit to stop the power supply circuit from supplying power to the engine device. The method of claim 4, wherein the step of suppressing activation of an engine device causes an oil supply circuit of the engine device to form an open circuit to stop the power supply circuit from supplying oil to the engine device. The method of claim 1, wherein the step of obtaining the notification of the ignition switch module further comprises a method for learning a serial number, the method for learning the serial number of the wafer includes: transmitting through the microcontroller The signal transceiver obtains an unknown wafer serial number sent by an unknown wafer key in a wireless sensing manner or through a connection line of the engine that activates the authentication computer; and stores the unknown wafer serial number via the microcontroller. The method of claim 9, wherein when the microcontroller is wirelessly sensed by the signal transceiver, an induction coil of the signal transceiver senses the unknown wafer serial number sent by the unknown wafer key. The method of claim 9, wherein the microcontroller, when the serial number sent by the chip key is obtained by the engine starting the connection line of the authentication computer, is to activate the authentication computer and a wireless transceiver through the engine. The connection line obtains the unknown chip serial number, wherein the wireless transceiver further includes a signal transceiver disposed in the ignition switch module, the signal transceiver is configured to sense the unknown of the unknown wafer key of the ignition switch module Wafer serial number. A data gateway device capable of inspecting a serial number of a chip is disposed in a vehicle, the vehicle includes an ignition switch module, an induction module and an engine start authentication computer, and the engine ignition mechanism triggers the engine ignition mechanism The module senses a wafer serial number sent by a chip key, and the engine starts the authentication computer to authenticate the serial number of the chip. The data gateway comprises: a storage module, recording at least one serial number; and a microcontroller for obtaining the ignition switch When the module is informed, a chip serial number sent by the wafer key is obtained by wireless sensing or by connecting the authentication computer through the engine to verify whether the wafer serial number matches the recorded at least one serial number to determine whether to output. A suppression command. The data gateway as described in claim 12, wherein the micro When the controller obtains the serial number of the wafer key transmitted by the wireless sensor, an induction coil of the signal transceiver senses the serial number of the wafer transmitted by the wafer key. The data gateway device of claim 12, wherein the microcontroller uses the engine to initiate the authentication computer connection line to obtain the wafer serial number sent by the wafer key, and the authentication computer and a wireless device are activated through the engine. The serial number between the transceivers obtains the serial number of the chip, wherein the wireless transceiver further includes a signal transceiver disposed in the ignition switch module, the signal transceiver is configured to sense the wafer key of the ignition switch module Wafer serial number. The data gateway of claim 12, wherein when the microcontroller outputs the suppression command, the suppression command is transmitted to an engine device to inhibit activation of the engine device. The data gateway of claim 15, wherein the data gateway transmits the suppression command to a vehicle computer, and the vehicle computer inhibits activation of the engine device according to the suppression command. The data gateway of claim 16, wherein the suppression command is transmitted to the vehicle computer through a controller area network. The data gateway device of claim 15, wherein the data gateway inhibits the start of the engine device, causing the power supply circuit of the engine device to form an open circuit to stop the power supply circuit from supplying power to the engine device. . For example, the information gateway described in claim 15 of the patent scope, wherein the capital When the material gateway inhibits the startup of the engine device, an oil supply circuit of the engine device is disconnected to stop the power supply circuit from supplying oil to the engine device. The data gateway device of claim 12, wherein the data gateway device obtains an unknown wafer serial number sent by an unknown wafer key according to a wireless sensing method or a connection line for starting the authentication computer through the engine. And storing the unknown wafer serial number.