Processing system and method for recording event times of a power tailgate

Abstract

A processing system and method for recording event time of a power tailgate includes a power tailgate, a storage unit and an electronic control unit. The electronic control unit is electrically connected to controlled elements of the power tailgate and the storage unit. The storage unit stores initial time information, external time information and event record files. The electronic control unit counts interval count information. The electronic control unit records the interval count information when a control command is sent as first interval information. The electronic control unit records the interval count information when a trigger signal is received as second interval information. The electronic control unit calculates a first estimated time corresponding to the first interval information according to the first end interval information or the last end interval information. The electronic control unit calculates a second estimated time corresponding to the second interval information according to the first end interval information or the last end interval information.

Description

Technical Field

[0001] This disclosure relates to a recording device and method for an electronic system, and more particularly to a processing system and method for recording the event time of an electric tailgate. Background Technology

[0002] Modern cars go beyond simply providing transportation; they also incorporate features like convenience, safety, and energy efficiency. Therefore, modern cars require a large number of automotive electronic components to achieve vehicle intelligence. For example, users can trigger the opening of a power tailgate by touching their feet while carrying goods, allowing the vehicle to automatically open the rear door. Due to the convenience offered by power tailgates, many car owners install them as an aftermarket option.

[0003] If a power tailgate malfunctions, the manufacturer needs to read the tailgate's event log file to determine the cause of the error. Currently, most power tailgates on the market use electronic control components to control the various sensors. However, these electronic control components do not have a built-in real-time clock (RTC). Summary of the Invention

[0004] In view of this, in some embodiments, a processing system for recording the event time of a power tailgate is provided. The processing system for recording the event time of a power tailgate includes a power tailgate, a storage unit, and an electronic control unit (ECU). The power tailgate includes a controlled element that responds to a trigger signal according to a control command; the storage unit stores initial time information and an event log file; the ECU is electrically connected to the controlled element and the storage unit, and the ECU counts interval information at intervals. The ECU receives the trigger signal responded to by the controlled element, records the interval count information when sending a control command as first interval information, and records the interval count information when receiving a trigger signal as second interval information; the ECU associates the initial time information with the beginning interval information of the event log file, and calculates a first estimated time corresponding to the first interval information based on the initial time information and the beginning interval information, or calculates a second estimated time corresponding to the second interval information based on the initial time information and the beginning interval information. The processing system for recording the event time of a power tailgate records the interval count information of the controlled element in a time-division manner using the ECU. The ECU calculates the actual time point of the corresponding event of the controlled element using the interval count information. The electronic control unit can obtain the actual time points of each event of the controlled element without relying on a real-time clock.

[0005] In some embodiments, the storage unit stores interval error information, and the electronic control unit adjusts the first estimated time or the second estimated time based on the interval error information.

[0006] In some embodiments, a processing system for recording the event time of a power tailgate includes a power tailgate, a storage unit, and an electronic control unit. The power tailgate includes a controlled element that responds to a trigger signal according to a control command; the storage unit stores an event log file; the electronic control unit is electrically connected to the controlled element and the storage unit, and performs interval counting. The electronic control unit receives the trigger signal responded to by the controlled element, records the interval count information when sending a control command as first interval information, and records the interval count information when receiving a trigger signal as second interval information. The electronic control unit sequentially records each first interval and each second interval to the event log file. The electronic control unit receives a time synchronization request, which includes external time information. Based on the time synchronization request, the electronic control unit obtains end-of-time interval information from the event log file. The electronic control unit calculates a first estimated time corresponding to each first interval based on the external time information and the end-of-time interval information, or calculates a second estimated time corresponding to each second interval based on the external time information and the end-of-time interval information.

[0007] In some embodiments, the end-interval information is either the first interval information of the last entry in the event log file or the second interval information of the last entry.

[0008] In some embodiments, the storage unit stores interval error information, and the electronic control unit adjusts the first estimated time or the second estimated time based on the interval error information.

[0009] In some embodiments, a method for recording the event time of an electric tailgate includes the following steps: recording initial time information of the electric tailgate; having an electronic control unit (ECU) count interval information at intervals and recording each interval count information to an event log file; having the ECU record the interval count information for sending control commands as first interval information; when the ECU receives a trigger signal from the electric tailgate, the ECU records the interval count information for receiving the trigger signal as second interval information; the ECU loads the initial time information and maps it to the beginning interval information of the event log file; the ECU calculates a first estimated time corresponding to the first interval information based on the initial time information and the beginning interval information; and the ECU calculates a second estimated time corresponding to the second interval information based on the initial time information and the beginning interval information.

[0010] In some embodiments, the step of the electronic control unit calculating the first estimated time and the second estimated time corresponding to the first interval information based on the initial time information and the first-end interval information includes the electronic control unit adjusting the first estimated time based on the interval error information; and the electronic control unit adjusting the second estimated time based on the interval error information.

[0011] In some embodiments, the step of the electronic control unit calculating the first estimated time and the second estimated time based on the initial time information and the first-end interval information includes the electronic control unit recording the corresponding first estimated time to the event log file based on the first interval information; and the electronic control unit recording the corresponding second estimated time to the event log file based on the second interval information.

[0012] In some embodiments, a method for recording the event time of an electric tailgate includes the following steps: an electronic control unit (ECU) counts interval information at intervals and records each interval count information to an event log file; the ECU records the interval count information for sending control commands as first interval information; when the ECU receives a trigger signal from the electric tailgate, the ECU records the interval count information for receiving the trigger signal as second interval information; the ECU sequentially records the first interval information and the second interval information to the event log file; the ECU obtains the end interval information and external time information from the event log file; the ECU calculates a first estimated time corresponding to the first interval information based on the external time information and the end interval information; and the ECU calculates a second estimated time corresponding to the second interval information based on the external time information and the end interval information.

[0013] In some embodiments, the step of the electronic control unit calculating the first estimated time and the second estimated time corresponding to the first interval information based on external time information and end-point interval information includes the electronic control unit adjusting the first estimated time based on an interval error information; and the electronic control unit adjusting the second estimated time based on the interval error information.

[0014] In some embodiments, the step of the electronic control unit calculating the first estimated time and the second estimated time corresponding to the first interval information based on the external time information and the end interval information includes: the electronic control unit recording the corresponding first estimated time to the event log file based on the first interval information; and the electronic control unit recording the corresponding second estimated time to the event log file based on the second interval information.

[0015] A system and method for recording the event time of an electric tailgate is provided for recording the occurrence time of events during electric tailgate operation. The electronic control element of the processing system can record the interval count information of each controlled element during operation using a built-in crystal oscillator and interval counter. Based on the interval count information and the event log file, the electronic control element further calculates a first estimated time or a second estimated time for each event. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the system architecture for recording the event time of an electric tailgate, as an example.

[0017] Figure 2 This is a flowchart of a method for processing the event time of recording an electric tailgate, according to one embodiment.

[0018] Figure 3A This is a schematic diagram of the recording time points of interval counting information in one embodiment.

[0019] Figure 3B This is a schematic diagram of the recording time points of another interval counting information in one embodiment.

[0020] Figure 4 This is a schematic diagram of the first-end interval information, the first estimated time, and the second estimated time in one embodiment.

[0021] Figure 5 This is a flowchart of a method for processing the event time of recording an electric tailgate, according to one embodiment.

[0022] Figure 6 This is a schematic diagram of the end interval information, the first estimated time, and the second estimated time in one embodiment.

[0023] The reference numerals in the attached figures are explained as follows:

[0024] 100: Processing System

[0025] 110: Electric tailgate

[0026] 111: Controlled Component

[0027] 120: Storage unit

[0028] 121: Initial Time Information

[0029] 122: Event Log File

[0030] 123: First interval information

[0031] 124: Second Interval Information

[0032] 130: Electronic Control Unit

[0033] 131: Communication pin

[0034] 132: Crystal Oscillator

[0035] 133: Processing Unit

[0036] 141: Control Commands

[0037] 142: Trigger signal

[0038] 143: External Time Information

[0039] 411: Head-end interval information

[0040] 412: End-of-phase interval information

[0041] Differences: △1, △2

[0042] S210~S270, S510~S570: Steps Detailed Implementation

[0043] Please refer to Figure 1 The diagram shown is a schematic of a processing system architecture for recording the event time of an electric tailgate according to an embodiment. The electric tailgate 110 can be used in gasoline vehicles, hybrid vehicles, or electric vehicles; all of these types of vehicles are collectively referred to as autonomous vehicles. The processing system for recording the event time of the electric tailgate 110 (hereinafter referred to as processing system 100) can be integrated into the vehicle's on-board control computer or can be independent of the on-board control computer. Processing system 100 includes the electric tailgate 110, a storage unit 120, and an electronic control unit (ECU) 130. The ECU 130 is connected to the storage unit 120 and the electric tailgate 110.

[0044] The power tailgate 110 includes at least one controlled element 111. The controlled element 111 is connected to the electronic control unit 130. The controlled element 111 can receive control commands 141 from an external source, or control commands 141 sent by the electronic control unit 130. The controlled element 111 responds to a trigger signal 142 according to the control command 141. The controlled element 111 can be, but is not limited to, a current sensing element, a voltage sensing element, a pulse-width modulation (PWM) element, a gear position detection element, a temperature sensing element, a tailgate latch, a tailgate position sensing element, a tailgate kick-in sensor, a tailgate strut position sensing element, a tailgate strut current sensing element, an indicator light, or a combination of the foregoing. For example, the external control command 141 can be a control command 141 received from an external source by the tailgate kick-in sensor, current sensing element, voltage sensing element, gear position detection element, or temperature sensing element. Alternatively, it can be a control command 141 from the electronic control unit 130 that drives the indicator light.

[0045] Storage unit 120 stores initial time information 121 and event log file 122. Storage unit 120 can be flash memory, erasable programmable read-only memory, or electrically erasable programmable read-only memory. Initial time information 121 is the installation time of the electric tailgate 110 for the autonomous vehicle. Generally, after the vehicle manufacturer installs the electric tailgate 110, it enables the processing system 100 and connects the processing system to the vehicle manufacturer's computer. The vehicle manufacturer's computer transmits initial time information 121 to the processing system 100 via communication pin 131. Event log file 122 records interval count information, interval count information of the controlled element 111 receiving control command 141 and responding to trigger signal 142 (the generation and processing of interval count information will be described later). The first interval count information in event log file 122 is referred to as the first interval information 411. The last interval count information when the electronic control unit 130 reads the event log file 122 is called the end interval information 412.

[0046] The electronic control unit 130 includes a communication pin 131, a crystal oscillator 132, and a processing unit 133. The processing unit 133 is connected to the communication pin 131 and the crystal oscillator 132. The communication pin 131 is connected to the controlled element 111. The processing unit 133 counts at equal time intervals according to the clock cycle of the crystal oscillator 132, and the number of counts is the interval count information. Since the clock of the crystal oscillator 132 is a fixed value, each clock cycle of the crystal oscillator 132 can be considered as an equal time length (Tick). The processing unit 133 sends control commands 141 to the controlled element 111 through the communication pin 131. When sending control commands 141, the processing unit 133 records the interval count information of sending control commands 141 as first interval information 123. Alternatively, when the controlled element 111 receives an external control command 141, the electronic control unit 130 can obtain the interval count information of receiving the control command 141 based on the response of the controlled element 111. When the controlled element 111 responds to the trigger signal 142 to the electronic control unit 130, the electronic control unit 130 records the interval count information of receiving the trigger signal 142 as the second interval information 124.

[0047] For further explanation, please refer to the following: Figure 2 This is a schematic diagram of the processing flow for recording the event time of an electric tailgate according to one embodiment.

[0048] Step S210: Record the initial time information of the electric tailgate;

[0049] Step S220: The electronic control unit counts the interval count information and records each interval count information to the event log file;

[0050] Step S230: The electronic control unit records the interval count information of sending control commands as the first interval information;

[0051] Step S240: When the electronic control unit receives a trigger signal from the electric tailgate, the electronic control unit records the interval count information when the trigger signal is received as the second interval information;

[0052] Step S250: The electronic control unit loads the initial time information and maps it to the beginning interval information of the event log file;

[0053] Step S260: The electronic control unit calculates the first estimated time corresponding to the first interval information based on the initial time information and the head-end interval information; and

[0054] Step S270: The electronic control unit calculates the second estimated time corresponding to the second interval information based on the initial time information and the first-end interval information.

[0055] When the power tailgate 110 is installed in the autonomous vehicle, the electronic control unit 130 records the installation time of the power tailgate 110 as initial time information 121. The electronic control element records the initial time information 121 in the event log file 122 and also records the initial time information 121 as the first interval information 411. In other words, in addition to having the first interval count information, the first interval information 411 also includes the actual time.

[0056] Next, the electronic control unit 130 counts the interval count information at equal time intervals. The electronic control unit 130 can sequentially record the interval count information into the event log file 122. During the interval counting process, the electronic control unit 130 monitors the controlled element 111 for the following conditions: Condition 1: The controlled element 111 receives a control command 141; Condition 2: The controlled element 111 sends a trigger signal 142. The controlled element 111 may receive the control command 141 from the electronic control element, or it may receive the control command 141 through sensing.

[0057] When the electronic control element detects the aforementioned situation, it simultaneously records the current interval count information and the trigger signal 142 (or control command 141) of the controlled element 111 in the event log file 122. The electronic control element associates the current interval count information with the control command 141 received by the controlled element 111, and refers to the corresponding interval count information as the first interval information 123. The electronic control element associates the current interval count information with the trigger signal 142 received by the controlled element 111, and refers to the corresponding interval count information as the second interval information 124.

[0058] Generally, the electronic control element can select the interval count information closest to the trigger signal 142 (or control command 141) as the current interval count information. Please refer to [reference needed]. Figure 3A As shown. Figure 3A The square wave in the diagram represents the clock waveform of crystal oscillator 132. Each clock cycle is considered as an equal-length timing interval, and the clock numbers are recorded sequentially as interval count information. The electronic control element uses the rising edge of the control command 141 (or trigger signal 142) as the recording point for the interval count information, such as... Figure 3A As shown. In Figure 3A In the diagram, a thick black arrow represents control command 141 or trigger signal 142, and dashed lines represent the clock waveform edges corresponding to the first interval information 123 or the second interval information 124. Alternatively, the electronic control element may use the falling edge of the clock signal of control command 141 (or trigger signal 142) as the interval counting information; please refer to [reference needed]. Figure 3B As shown. The electronic control element sequentially records the count information for each interval into the event log file 122. Please refer to [the relevant documentation]. Figure 4 As shown. In Figure 4 The interval count information circled in thick lines is the first interval information 411, the interval count information circled in thin lines is the first interval information 123, and the interval count information circled in dashed lines is the second interval information 124.

[0059] Subsequently, the electronic control element calculates the difference in interval counts between the first-end interval information 411 and the first interval information 123. The electronic control element then calculates the difference in interval counts (e.g., ...) based on the difference in interval counts. Figure 4 The first estimated time of the first interval information 123 is calculated by comparing △1) with the clock. The electronic control element multiplies the difference by the clock to obtain the first estimated time.

[0060] Similarly, the electronic control element calculates the difference between the first-end spacing information 411 and the second-end spacing information 124, such as... Figure 4 △2 in the above. The electronic control element calculates the corresponding second estimated time based on the aforementioned difference. The electronic control element records the first estimated time to the corresponding first interval information 123 in the event log file 122. The electronic control element records the second estimated time to the corresponding second interval information 124 in the event log file 122. The processing system 100 calculates the estimated time when the controlled element 111 of the electric tailgate 110 is triggered based on the initial time and interval count information. The electronic control unit 130 can realize the timing of the running time of the controlled element 111 through its own crystal oscillator 132.

[0061] In some embodiments, the processing system 100 includes a power tailgate 110, a storage unit 120, and an electronic control unit 130. The connection configuration of the power tailgate 110, the storage unit 120, and the electronic control unit 130 can be found in [reference needed]. Figure 1 The illustration and explanation are shown below.

[0062] The electronic control unit 130 can receive time synchronization requests via communication pin 131, which include external time information 143. External time information 143 is the actual time provided by an external device. Communication pin 131 can be, but is not limited to, Ethernet, Local Interconnect Network (LIN), Controller Area Network (CAN), FlexRay network, or Media Oriented Systems Transport (MOST). Therefore, the electronic control element receives time synchronization requests from external devices via communication pin 131. External devices can be, but are not limited to, vehicle control computers, vehicle navigation systems, mobile phones, or mobile computers. For example, a tester can time the event using a mobile phone and transmit the timing result to the electronic control unit 130 via a wireless network. Alternatively, the tester can send a time synchronization request to the electronic control unit 130 via the vehicle control computer.

[0063] For further explanation of how the electronic control unit 130 calculates the first estimated time and the second estimated time, please refer to [link / reference needed]. Figure 5 The diagram shown is a schematic representation of a process for recording the event time of a power tailgate according to one embodiment. The method for recording the event time of the power tailgate 110 includes the following steps:

[0064] Step S510: The electronic control unit counts the interval count information and records each interval count information to the event log file;

[0065] Step S520: The electronic control unit records the interval count information of sending control commands as the first interval information;

[0066] Step S530: When the electronic control unit receives the trigger signal from the electric tailgate, the electronic control unit records the interval count information when the trigger signal is received as the second interval information;

[0067] Step S540: The electronic control unit sequentially records the first interval information and the second interval information into the event log file;

[0068] Step S550: The electronic control unit acquires the end interval information of the event log file and external time information;

[0069] Step S560: The electronic control unit calculates the first estimated time corresponding to the first interval information based on the external time information and the terminal interval information; and

[0070] Step S570: The electronic control unit calculates the second estimated time corresponding to the second interval information based on the external time information and the end interval information.

[0071] First, the electronic control unit 130 records interval count information in interval counts and records the interval count information in the event log file 122. The electronic control element corresponds the current interval count information to the control command 141 received by the controlled element 111, and refers to the corresponding interval count information as the first interval information 123. The electronic control element corresponds the current interval count information to the trigger signal 142 received by the controlled element 111, and refers to the corresponding interval count information as the second interval information 124.

[0072] When the electronic control unit 130 receives a time synchronization request, it will pause the recording of event log file 122 and interval count information. Here, the last interval count information recorded by the electronic control unit 130 will be referred to as the end interval information 412. Please refer to [reference needed]. Figure 6 As shown. Figure 6 Therefore, the interval count information circled in thick box is the end interval information 412, the interval count information circled in thin box is the first interval information 123, and the interval count information circled in dashed box is the second interval information 124. The electronic control unit 130 maps the external time information 143 to the end interval information 412. In other words, the time corresponding to the end interval information 412 is the external time information 143.

[0073] The electronic control element estimates each first estimated time based on the end interval information 412. Starting from the end interval information 412, the electronic control element calculates the difference between the first interval information 123 and the end interval information 412. Based on the calculated difference and the clock of the crystal oscillator 132, the electronic control element calculates the first estimated time of the first interval information 123. The electronic control element performs the corresponding calculations for each first interval information 123 in the aforementioned manner and records the obtained first estimated time in the event log file 122. Similarly, the electronic control element also estimates the corresponding second estimated time for each second interval information 124 based on the end interval information 412.

[0074] In some embodiments, storage unit 120 further stores interval error information. The interval error information is the difference between a clock cycle of a specified duration and the corresponding time segment. Electronic control unit 130 adjusts a first estimated time or a second estimated time based on the interval error information. Generally, processing system 100 can verify crystal oscillator 132 and obtain interval error information using an external electronic timer. The tester stores the interval error information in storage unit 120.

[0075] The electronic control unit 130 and the electronic timer keep track of the same duration. Taking 5 minutes as an example, the electronic control unit 130 obtains 306 seconds based on the crystal oscillator 132, while the external electronic timer obtains 300 seconds. Therefore, the electronic control element has an interval error of (306-300) / 300 = 0.02 seconds. If the electronic control element detects an interval error in the storage unit 120, it extracts the interval error information from the storage unit 120 and calculates a first estimated time (or a second estimated time) based on the initial interval information 411 (or the final interval information 412).

[0076] A processing system 100 and method for recording the event time of the electric tailgate 110 are used to record the event occurrence time during the operation of the electric tailgate 110. The electronic control element of the processing system 100 can record the interval count information of each controlled element 111 during operation using a built-in crystal oscillator 132 and an interval counter. Based on the interval count information and the event log file 122, the electronic control element further calculates a first estimated time or a second estimated time for each event.

Claims

1. A processing system for recording the event time of an electric tailgate, characterized in that, include: An electric tailgate includes a controlled element that responds to a trigger signal according to a control command; A storage unit stores initial time information and an event log file; and An electronic control unit is electrically connected to the controlled element and the storage unit. The electronic control unit counts an interval count information at intervals. The electronic control unit receives the trigger signal in response from the controlled element. The electronic control unit records the interval count information when sending the control command as a first interval information. The electronic control unit records the interval count information when receiving the trigger signal as a second interval information. Specifically, the electronic control unit associates the initial time information with the first end interval information of the event log file, and calculates a first estimated time corresponding to the first interval information based on the initial time information and the first end interval information, or the electronic control unit calculates a second estimated time corresponding to the second interval information based on the initial time information and the first end interval information.

2. The processing system for recording the event time of an electric tailgate as described in claim 1, characterized in that, The storage unit stores interval error information, and the electronic control unit adjusts the first estimated time or the second estimated time based on the interval error information.

3. The processing system for recording the event time of an electric tailgate as described in claim 1, characterized in that, The electronic control unit records the first estimated time or the second estimated time to the event log file.

4. A processing system for recording the event time of an electric tailgate, characterized in that, include: An electric tailgate includes a controlled element that responds to a trigger signal according to a control command; One storage unit stores one event log file; as well as An electronic control unit is electrically connected to the controlled element and the storage unit. The electronic control unit counts interval information at intervals. The electronic control unit receives the trigger signal in response from the controlled element. The electronic control unit records the interval information when sending the control command as a first interval information. The electronic control unit records the interval information when receiving the trigger signal as a second interval information. The electronic control unit sequentially records each of the first interval information and each of the second interval information to the event log file. The electronic control unit receives a time synchronization request, which includes external time information. The electronic control unit obtains an end interval information from the event log file according to the time synchronization request. The electronic control unit calculates a first estimated time corresponding to each of the first interval information based on the external time information and the end interval information, or the electronic control unit calculates a second estimated time corresponding to each of the second interval information based on the external time information and the end interval information.

5. The processing system for recording the event time of an electric tailgate as described in claim 4, characterized in that, The end interval information is either the first interval information of the last entry in the event log file or the second interval information of the last entry.

6. The processing system for recording the event time of an electric tailgate as described in claim 4, characterized in that, The storage unit stores interval error information, and the electronic control unit adjusts the first estimated time or the second estimated time based on the interval error information.

7. The processing system for recording the event time of an electric tailgate as described in claim 4, characterized in that, The electronic control unit records the first estimated time or the second estimated time to the event log file.

8. A method for processing the event time of recording an electric tailgate, characterized in that, include: Record the initial time information of an electric tailgate; An electronic control unit counts interval information at intervals and records each interval count information to an event log file; The interval counting information recorded by the electronic control unit for sending a control command is a first interval information; When the electronic control unit receives a trigger signal from the electric tailgate, the electronic control unit records the interval count information when the trigger signal is received as a second interval information. The electronic control unit loads the initial time information and corresponds it to the first end interval information of the event log file; The electronic control unit calculates a first estimated time corresponding to the first interval information based on the initial time information and the first-end interval information; as well as The electronic control unit calculates a second estimated time corresponding to the second interval information based on the initial time information and the first-end interval information.

9. The method for processing the event time of recording the electric tailgate as described in claim 8, characterized in that, The steps by which the electronic control unit calculates the first estimated time and the second estimated time corresponding to the first interval information based on the initial time information and the head-end interval information include: The electronic control unit adjusts the first estimated time based on an interval error information; and The electronic control unit adjusts the second estimated time based on the interval error information.

10. The method for processing the event time of recording the electric tailgate as described in claim 8, characterized in that, The steps by which the electronic control unit calculates the first estimated time and the second estimated time based on the initial time information and the head-end interval information include: The electronic control unit records the corresponding first estimated time to the event log file based on the first interval information; and The electronic control unit records the corresponding second estimated time to the event log file based on the second interval information.

11. A method for processing the event time of recording an electric tailgate, characterized in that, include: An electronic control unit counts interval information at intervals and records each interval count information to an event log file; The interval counting information recorded by the electronic control unit for sending a control command is a first interval information; When the electronic control unit receives a trigger signal from the electric tailgate, the electronic control unit records the interval count information when the trigger signal is received as a second interval information. The electronic control unit sequentially records the first interval information and the second interval information into the event log file; The electronic control unit acquires an end-interval information and an external time information from the event log file; The electronic control unit calculates a first estimated time corresponding to the first interval information based on the external time information and the end interval information; as well as The electronic control unit calculates a second estimated time corresponding to the second interval information based on the external time information and the end interval information.

12. The method for processing the event time of recording the electric tailgate as described in claim 11, characterized in that, The steps of the electronic control unit in calculating the first estimated time and the second estimated time corresponding to the first interval information based on the external time information and the end-point interval information include: The electronic control unit adjusts the first estimated time based on an interval error information; and The electronic control unit adjusts the second estimated time based on the interval error information.

13. The method for processing the event time of recording the electric tailgate as described in claim 11, characterized in that, The steps by which the electronic control unit calculates the first estimated time and the second estimated time based on the external time information and the end-point interval information include: The electronic control unit records the corresponding first estimated time to the event log file based on the first interval information; and The electronic control unit records the corresponding second estimated time to the event log file based on the second interval information.

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